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WO2014088139A1 - Dispositif récepteur de diffusion numérique portatif comportant une pluralité de syntoniseurs intégrés, procédé de traitement de signaux numériques au moyen de ce dispositif, et système et procédé de commande de la puissance d'un dispositif émetteur-récepteur de diffusion numérique portatif - Google Patents

Dispositif récepteur de diffusion numérique portatif comportant une pluralité de syntoniseurs intégrés, procédé de traitement de signaux numériques au moyen de ce dispositif, et système et procédé de commande de la puissance d'un dispositif émetteur-récepteur de diffusion numérique portatif Download PDF

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Publication number
WO2014088139A1
WO2014088139A1 PCT/KR2012/010702 KR2012010702W WO2014088139A1 WO 2014088139 A1 WO2014088139 A1 WO 2014088139A1 KR 2012010702 W KR2012010702 W KR 2012010702W WO 2014088139 A1 WO2014088139 A1 WO 2014088139A1
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WO
WIPO (PCT)
Prior art keywords
broadcast
stream
smart device
information
video
Prior art date
Application number
PCT/KR2012/010702
Other languages
English (en)
Korean (ko)
Inventor
임태일
한상은
오용훈
김형종
Original Assignee
주식회사 코발트테크놀로지
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020120142258A external-priority patent/KR20140074064A/ko
Priority claimed from KR1020120142205A external-priority patent/KR20140074039A/ko
Application filed by 주식회사 코발트테크놀로지 filed Critical 주식회사 코발트테크놀로지
Publication of WO2014088139A1 publication Critical patent/WO2014088139A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners

Definitions

  • the present invention relates to a portable broadcast receiving device having a plurality of tuners interworking with a smart device and a broadcast signal processing method using the same.
  • the present invention also relates to a power supply control system and a power supply control method for a portable digital broadcast receiver having a plurality of tuners.
  • a digital broadcast signal of a plurality of broadcast standards receives a digital broadcast signal of a plurality of broadcast standards, processes and transmits it into a form that can be processed by the smart device, thereby possessing multimedia playback capability possessed by the smart device.
  • a portable broadcast receiving device having a plurality of tuners interlocked with a smart device for simultaneously or sequentially viewing a plurality of digital broadcasts of various broadcasting standards according to a user's setting, a broadcast signal processing method using the same, the portable digital A power supply control system for a broadcast receiving device, and a power supply control method.
  • Such devices are equipped with a universal operating system (OS) (e.g., Android, Sea, iOS, etc. as an OS of a smartphone) and a web browser, and users can use various software (S / W) and programs (e.g., apps ( Since it is possible to directly install and use APP)), the user can freely utilize various software contents or perform tasks provided by the past PC.
  • OS operating system
  • S / W software
  • apps Since it is possible to directly install and use APP)
  • apps Since it is possible to directly install and use APP
  • Such a device is collectively referred to as a new term "smart device” and includes, in particular, a typical portable terminal device having the above function.
  • a portable device includes, in particular, a typical portable terminal device having the above function.
  • a concept including a home appliance such as a TV, a refrigerator, and the like combined with the above functions may be used.
  • initial mobile broadcasting may be referred to as "low quality mobile broadcasting".
  • Japan is a representative example of a country in which both high quality mobile broadcasting and high quality digital broadcasting are simultaneously provided.
  • “1-Seg broadcasting” for low quality mobile broadcasting and “Full-Seg broadcasting” for high quality broadcasting are served together.
  • the mobile receiver is being serviced in a form that can be received by a mobile receiver as well as a fixed receiver.
  • T-DMB terrestrial DMB
  • S-DMB satellite DMB
  • high-definition digital broadcast are being serviced for fixed receivers.
  • a smart device such as a smart phone that can receive a mobile TV broadcast from the smart device itself without a separate device by embedding a mobile TV broadcast receiving chip
  • a smart device that does not have a built-in mobile TV broadcast chip
  • smart devices incorporating mobile TV broadcast receiving chips are limited to some brands of smartphone products, and most of them are limited to reception of low quality mobile broadcasts having good mobile reception characteristics but low resolution of broadcast video. to be.
  • Dongle Dongle form is used in the mainstream, the broadcast receiving device as a portable mobile device in the strict sense is not being spread.
  • the two broadcasts or channels for example, low-quality digital broadcast, except for the method of cross-viewing by switching. It is impossible to simultaneously watch high-quality digital broadcasting, and also, it is not equipped with an efficient system and power control function considering battery consumption, and thus there is a problem that the use time is short without charging and there is a limitation in miniaturization and light weight as a portable device.
  • a portable digital broadcast receiver interworking with a smart device two broadcasts of high-definition digital broadcasting (for example, Full-Seg broadcasting in Japan) and low-quality mobile broadcasting (for example, Japanese 1-Seg broadcasting) can be simultaneously used.
  • high-definition digital broadcasting for example, Full-Seg broadcasting in Japan
  • low-quality mobile broadcasting for example, Japanese 1-Seg broadcasting
  • Such a portable digital broadcast receiver requires the following functions.
  • a portable digital broadcast receiver for example, in Japan, where both are simultaneously serviced, it is possible to simply watch a full-seg broadcast channel on a smart device or cross-view (switch) 1-seg broadcast on the same channel. It is required to develop a form that has the capability to watch the full-seg broadcast channel and the 1-seg broadcast channel at the same time.
  • transmission and control of each stream may be performed so that there is no mutual interference between the low quality mobile broadcast and the high definition digital broadcast by being processed independently between the two broadcasts. Required.
  • the portable digital broadcasting receiver is composed of an efficient system with a power control function that minimizes battery consumption, so that the battery can be used for a long time in a mobile environment where the battery cannot be recharged and it can be made compact and lightweight for a mobile environment. Required.
  • an object of the present invention is to provide a portable digital broadcast receiving device having a plurality of tuners interlocked with a smart device capable of solving the above technical problems and satisfying the above-mentioned requirements, and a broadcast signal processing method using the same. .
  • an object of the present invention is to provide a power supply control system and a power supply control method for a portable digital broadcast receiver having a plurality of tuners interoperating with a smart device.
  • a portable digital broadcast receiver including a plurality of tuners interworking with a smart device through a network, comprising a first RF tuner and a first demodulator and receiving and selecting a high quality digital broadcast signal
  • a first broadcast signal receiver for processing a signal of a broadcast channel and outputting a transport stream (TS) of a high definition digital broadcast signal
  • a second broadcast signal receiver including a second RF tuner and a second demodulator and receiving a low quality mobile broadcast signal and processing a signal of a selected broadcast channel to output a transport stream (TS) of the low quality mobile broadcast signal
  • the transport stream TS of the high quality digital broadcast signal and the transport stream TS of the low quality mobile broadcast signal are processed to output an output stream of the high quality digital broadcast signal of the format requested by the smart device and an output stream of the low quality mobile broadcast signal.
  • a broadcast stream conversion unit for generating; Receives a broadcast request request message for one or more broadcast channels selected by the user from the smart device, receives the output stream of the high-definition digital broadcast signal and the output stream of the low-quality mobile broadcast signal, respectively, and converts them into network packets for processing.
  • a network interface unit for transmitting to a smart device interworked through a wired / wireless network as a stream; And a system controller for controlling operations of the first broadcast signal receiver, the second broadcast signal receiver, the broadcast stream converter, and the network interface unit, according to the broadcast request message received from the smart device.
  • the broadcast viewing request message received from the smart device includes channel selection information, which is information of a broadcasting channel that the user wants to view through the smart device, and information on playing capability of the smart device.
  • the control unit controls the operation of at least one of the first broadcast signal receiver and the second broadcast signal receiver and a network interface unit, and controls the operation of the broadcast stream converter according to the reproduction capability information of the smart device.
  • the channel selection information includes information identifying whether the channel selected by the user belongs to a channel belonging to a high quality digital broadcast or a channel belonging to a low quality mobile broadcast
  • the playability information of the smart device includes a container supported by the platform of the smart device.
  • the above information includes at least one of audio encoding scheme, audio encoding detail setting, voice information to be extracted from input audio, number of voice channels that can be processed, audio sample rate that can be processed, and bit rate information. desirable.
  • the broadcast stream converter comprises a high quality broadcast stream converter for processing an output stream of a high quality digital broadcast signal by processing a transport stream (TS) of the high quality digital broadcast signal, wherein the high quality broadcast stream converter, A demultiplexer for demultiplexing an input broadcast stream of a high definition digital broadcast output from the first broadcast signal receiver and separating the input broadcast stream into a video stream of the high definition broadcast video format, an audio stream of the high definition broadcast audio format, and input side information data; De-MUX); A video transcoder for converting the video stream of the high definition digital broadcast into a video stream of a terminal video format reproduced by a smart device according to the control capability information of a system controller; An audio transcoder for converting an audio stream of the high definition digital broadcast into an audio stream of a terminal audio format reproduced by a smart device according to the playability information according to a control command of a system controller; The separated input additional information data is filtered by only the control command of the system controller 150 to convert only the detailed information to be included in the container
  • An additional information filter / converter for outputting; And a multiplexer (MUX) for multiplexing the video stream of the terminal video format, the audio stream of the terminal audio format, and the output additional information data into a container-type output stream of the terminal playability information by a control command of a system controller.
  • the system controller may include: a de-multiplexer (De-MUX) and a video transcoder unit according to the terminal playability information when a high quality digital broadcast is requested from the channel selection information; An audio transcoder section; Additional information filter / conversion unit; By controlling the operation of the multiplexer MUX, an output stream is generated by processing a transport stream TS of an input high definition digital broadcast signal.
  • the video transcoder unit detects the size of the video stream of the decoded video stream by decoding the video stream of the high definition digital broadcast to determine whether it is an HD broadcast video or an SD broadcast video.
  • the decoded video image signal scaling according to the image size of the playability information, video encoding method of the playability information, and encoding according to its detailed setting and video bitrate are performed. The encoding is performed without performing scaling according to the image size of the information.
  • the input audio stream is delivered to the multiplexer without passing through the audio transcoder.
  • the high definition broadcast stream converting unit may further include an encrypting unit encrypting an output stream of the high definition digital broadcast output from the multiplexing unit and outputting the encrypted output stream as a protected output stream.
  • the additional information filter / converting unit extracts content protection information.
  • the encryption unit transmits the encrypted output stream of the high definition digital broadcast according to the content protection information, and outputs the protected output stream.
  • the broadcast stream converter may include a low quality broadcast stream converter configured to process a transport stream (TS) of a low quality mobile broadcast signal to generate an output stream of the low quality mobile broadcast signal, wherein the low quality broadcast stream converter is the second broadcast.
  • a demultiplexer which demultiplexes the input side information data by demultiplexing an input broadcast stream of a low quality mobile broadcast output from the signal receiver;
  • an additional information filter / converter extracting content protection information from the input additional information data.
  • an encryption unit for encrypting a transport stream of an input low quality mobile broadcast signal and outputting the encrypted output stream as a protected output stream, and outputting a protected output stream by encrypting the transport stream of the low quality mobile broadcast according to the content protection information. It is preferable.
  • a power supply unit independent of each component of the first broadcast signal receiver, the second broadcast signal receiver, the broadcast stream converter, the network interface, and the system controller
  • a power controller configured to supply power from the controller, wherein the power controller controls the power supply of each component according to a power mode signal based on the broadcast viewing request message of the system controller.
  • the present invention relates to a broadcast signal processing method of a portable digital broadcast receiving device having a plurality of tuners for interfacing with a smart device and receiving a high quality digital broadcast and receiving a low quality mobile broadcast, the power source of the broadcast receiving device
  • the built-in reception / service control application is executed to initialize various variables for executing the software, to initialize each component of the broadcast receiving device, and to respond to the device search request from the smart device.
  • the terminal includes selection channel information, which is information on a channel selected by a user, and terminal playback capability information, which is information on a playback capability of videos and videos of the smart device, and the selection channel information includes channels of high-definition digital broadcasting and low-quality mobile broadcasting.
  • selection channel information includes, and is characterized in that for processing a broadcast signal for the broadcast channel selected by the user based on the selection channel information and the reproduction capability information transmitted to the smart device.
  • the mutual control authentication step (S300) receives a security key generation request from the smart device, generates a security key to determine the security key according to the user's acceptance input and secure And transmitting the acceptance response to the key generation request to the smart device, wherein the broadcast viewing step (S400) encrypts the output stream of the broadcast signal according to the preset security method based on the security key, Characterized in that the transmission to the device.
  • a transport stream (TS) of the high definition digital broadcast signal is received and demultiplexed to receive a video stream, an audio stream, and an additional input information data stream.
  • a demultiplexing process of separating the video stream, a video transcoding process of re-processing the image output by decoding the video stream according to the playability information of the smart device, encoding the video stream in a specific video encoding format, and decoding the video stream An audio transcoding process of reprocessing the output audio sample according to the playability information of the smart device and encoding the output audio sample in a specific audio encoding format.
  • the method may further include determining whether the video stream is an HD broadcast / SD broadcast signal from the result of decoding the video stream, and in the case of HD broadcast, scaling an image output by decoding the video stream according to the playability information of the smart device. Or reprocessing by carrying out one or more processes of translating.
  • the audio transcoding process decodes the audio stream into PCM samples according to the playability information of the smart device, and reprocesses the downmixing method. It is preferable to encode and output in a specific audio encoding format.
  • the present invention relates to a power supply control system for a portable digital broadcast receiver having a plurality of tuners interworking with a smart device through a network, wherein the portable digital broadcast receiver includes a first RF tuner and a first RF tuner.
  • a first broadcast signal receiver including a demodulator and receiving a high quality digital broadcast signal and processing a signal of a selected broadcast channel to output a transport stream (TS) of the high quality digital broadcast signal;
  • a second broadcast signal receiver including a second RF tuner and a second demodulator and receiving a low quality mobile broadcast signal and processing a signal of a selected broadcast channel to output a transport stream (TS) of the low quality mobile broadcast signal;
  • the output stream of the high definition digital broadcast signal of the format requested by the smart device and the output broadcast of the low quality mobile broadcast signal by processing the transport stream TS of the high definition digital broadcast signal and the transport stream TS of the low quality mobile broadcast signal
  • a broadcast stream converter for generating a stream; Receives a broadcast request request message for one or more broadcast channels selected by the user from the smart device, receives the output stream of the high quality digital broadcast signal and the output stream of the low quality mobile broadcast signal, and converts them into network packets, respectively.
  • a network interface for transmitting to a smart device interworking through a network; and a power supply connection to the first broadcast signal receiver, the second broadcast signal receiver, a broadcast stream converter, and a network interface is respectively divided.
  • a power supply control unit which is divided to supply power independently and comprises a power control unit configured to selectively connect / block a power supply connection and a power supply unit electrically connected to the power control unit to supply power; And a power source configured to control operations of the first broadcast signal receiver, the second broadcast signal receiver, the broadcast stream converter, and the network interface unit according to the broadcast viewing request message, and independently control one or more power supply connections thereof. It characterized in that it comprises a system control unit for supplying a mode signal to the power control unit.
  • the broadcast stream conversion unit is a high definition broadcast stream conversion unit for processing the transport stream (TS) of the high definition digital broadcast signal to generate an output broadcast stream of a high definition digital broadcast signal of the format requested by the smart device and the A low quality broadcast stream converter configured to process a transport stream (TS) of a low quality mobile broadcast signal to generate an output broadcast stream of a low quality mobile broadcast signal of a format requested by the smart device, wherein the power supply controller includes a high quality broadcast stream converter And the power supply connection to the low quality broadcast stream conversion unit are divided so as to supply power independently, and the system controller supplies the power mode signal to the power control unit to independently control one or more power supply connections thereof. It is composed.
  • the system controller when it is determined that the channel viewing request of the high-definition digital broadcast is selected as a result of analysis of the selected channel information of the broadcast viewing request message, the system controller turns off the power of the second broadcast signal receiver and the low quality broadcast stream converter. It is preferable to be configured to supply a signal to the power control unit to cut off the power connection connected thereto or to control them in the idle state.
  • the system control unit may further include, when the system control unit determines that the channel viewing request of the low quality mobile broadcast is selected as a result of analysis of the selection channel information of the broadcast viewing request message, the power of the first broadcast signal receiving unit and the high definition broadcasting stream converting unit.
  • Supplying a power mode signal to the power supply to the power control unit is preferably configured to cut off the power connection connected to them, or to control them in the idle state.
  • the network interface unit may be configured to perform network transmission of the processed broadcast stream for viewing the high definition broadcast stream socket 141 and the low quality mobile broadcast for the network transmission of the processed broadcast stream for viewing the high definition digital broadcast.
  • the low quality broadcast stream socket 142 in charge is separated and controlled independently, and the system controller determines that the channel viewing request of the high-definition digital broadcast alone is selected as a result of analysis of the selected channel information of the broadcast viewing request message.
  • the low quality broadcast stream socket 142 is controlled to the idle state, and when it is determined that the channel viewing request of the low quality digital broadcast alone is selected, the high quality broadcast stream socket 141 is controlled to the idle state.
  • the high definition broadcast stream converting unit may demultiplex an input broadcast stream of a high definition digital broadcast output from the first broadcast signal receiver to add a video stream of the high definition broadcast video format, an audio stream of the high definition broadcast audio format, and add an input.
  • An audio transcoder for converting an audio stream of the high definition digital broadcast into an audio stream of a terminal audio format reproduced by a smart device according to the playability information according to a control command of a system controller;
  • the separated input additional information data is filtered by the control unit of the system controller 150 to filter only the detailed information to be included in the container according to the terminal playability information received from the smart device, and converts the additional additional information data into output additional information data for re-multiplexing.
  • An additional information filter / converter for outputting; And a multiplexing unit which multiplexes the video stream of the terminal video format, the audio stream of the terminal audio format, and the output side information data into a container-type output stream of the terminal playability information by a control command of the system controller 150.
  • MUX Including, the video transcoder unit detects the size of the video stream of the decoded video stream by decoding the video stream of the high-definition digital broadcast to determine whether it is an HD broadcast video or SD broadcast video, if the SD broadcast video, It is preferable that the system control unit controls the audio transcoder unit in a resting state.
  • the present invention relates to a power control method of a portable digital broadcast receiver device having a plurality of tuners for interfacing with a smart device and receiving a high definition digital broadcast and a low quality mobile broadcast, wherein the power of the portable digital device is turned on.
  • a standby mode setting step of entering a standby mode by controlling a power connection so that only power of a component required to wait and watch for a request from a smart device (client) is turned on.
  • High-quality digital broadcast reception that controls the power connection so that the power of the components related to the processing of high-definition digital broadcasting is turned on, and cuts off the power connection so that the power of the components related to the processing of low-quality mobile broadcasting is turned off.
  • Mode setting step When the channel viewing request of the low quality mobile broadcast is selected, the power connection is controlled so that the power of the components related to the processing of the low quality mobile broadcasting is turned on, and the power connection is cut off so that the power of the components related to the processing of the high quality digital broadcasting is turned off.
  • Setting a low quality mobile broadcast reception mode to enter a low quality mobile reception mode And setting a simultaneous viewing mode to enter a simultaneous viewing mode by controlling a power connection so that power of all components of the portable digital broadcasting receiver is turned on when a channel viewing request of high definition digital broadcasting and low quality mobile broadcasting is simultaneously selected.
  • Receiving a broadcast request request message for the one or two broadcast channels selected by the user from the smart device including, analyzing the broadcast request request message, according to the analysis result, the high-definition digital broadcast reception mode setting step, It is characterized by selectively performing one of a low quality mobile broadcast reception mode setting step and a simultaneous viewing mode setting step.
  • the stand-by mode setting step is performed when there is no request related to watching a broadcast from a smart device within a preset time in the high definition digital broadcast reception mode, the low quality mobile broadcast reception mode, and the simultaneous viewing mode. Characterized in that it is carried out.
  • the simultaneous viewing mode setting step is performed.
  • the broadcast viewing request message received from the smart device includes channel selection information, which is information of a broadcast channel that the user wants to view through the smart device, and the channel selection information includes a high quality broadcast channel that the user wants to watch.
  • Information regarding whether a digital broadcast or a low quality mobile broadcast is included, and selectively performing one of the high quality digital broadcast reception mode setting step, the low quality mobile broadcast reception mode setting step, and the simultaneous viewing mode setting step according to the channel selection information. It is preferable.
  • a portable digital broadcast receiver interworking with a smart device a portable digital broadcast receiver having a function of simultaneously processing two types of broadcasts of high-definition digital broadcast and low-quality mobile broadcast simultaneously to be viewed on a smart device.
  • a device can be provided.
  • a portable digital broadcast receiver for example, in Japan, where both are simultaneously serviced, it is possible to simply watch a full-seg broadcast channel on a smart device or cross-view (switch) 1-seg broadcast on the same channel. Beyond that, it is possible to watch Full-Seg and 1-Seg channels simultaneously.
  • the portable digital broadcasting receiver is composed of an efficient system having a power control function that minimizes battery consumption, which enables long-term use in a mobile environment where the battery is not rechargeable, and enables compact and light weight suitable for a mobile environment. It works.
  • FIG. 1 is a block diagram of a digital broadcast viewing system composed of a smart device of the present invention and a portable digital broadcast receiving device interworking with the smart device.
  • FIG. 2 is a block diagram of a portable digital broadcast receiver of the present invention.
  • FIG. 3 is a configuration diagram of a first embodiment of the broadcast stream conversion unit.
  • 4 to 6 are diagrams for explaining the construction and operation of the second embodiment of the broadcast stream conversion unit.
  • FIG. 7 is a configuration diagram of a network interface unit in an embodiment of the present invention.
  • FIGS. 8 and 9 are diagrams illustrating a configuration of a power supply control unit and a power control method using the same in a portable digital broadcasting receiver according to an embodiment of the present invention.
  • FIG. 10 is a functional block diagram of the broadcast playback apparatus 200 of the present invention.
  • FIG. 11 is a flowchart of a broadcast signal processing method of a portable digital broadcast receiving apparatus incorporating a plurality of tuners for interfacing with a smart device of the present invention and receiving a high quality digital broadcast and a low quality mobile broadcast.
  • FIG. 12 is a flowchart of a server start / device initialization step (S100).
  • FIG. 13 is a flowchart of a client device search request processing step according to an embodiment of the present invention.
  • FIG. 14 is a flowchart of a mutual control authentication process between a digital broadcast receiver (server) and a smart device (client).
  • 15 is a flowchart of a broadcast viewing step according to an embodiment of the present invention.
  • 16 is a flowchart illustrating a broadcast receiving procedure of a smart device linked to a portable digital broadcasting receiver according to an embodiment of the present invention.
  • 17 is a flowchart illustrating a process of setting terminal playability information according to an embodiment of the present invention.
  • FIG. 18 is a flowchart of the overall execution process of a built-in reception / service control application for performing a broadcast viewing procedure of a user in an associated smart device.
  • FIG. 19 is a flowchart illustrating a wireless network setting process in a smart device according to an embodiment of the present invention.
  • 20 is a flowchart illustrating a channel search process in a smart device according to an embodiment of the present invention.
  • 21 is a flowchart illustrating a process of setting playability information in a smart device according to an embodiment of the present invention.
  • FIG. 22 is a block diagram of an exemplary UI in a smart device according to an embodiment of the present invention.
  • first broadcast signal receiver 120 second broadcast signal receiver
  • mobile broadcast and “mobile broadcast signal” refer to a digital broadcast or a broadcast signal of such a digital broadcast, wherein the video resolution included in the broadcast signal is QVGA (320X240) or a similar level.
  • QVGA 320X240
  • low quality mobile broadcast and “initial mobile broadcast” are used interchangeably.
  • SD broadcast refers to a digital broadcast having a DVD-quality video resolution of D1 (720X480) level, that is, DVD quality.
  • HD broadcast means a digital broadcast having a video resolution of 1440X1080 or higher (so-called Full HD: 1920X1080).
  • High quality digital broadcasting is used for digital broadcasting including SD broadcasting and HD broadcasting.
  • Digital broadcasting is mainly divided into DMB (Digital Multimedia Broadcasting), DVB (Digital Video Broadcasting), Media Flow (Media FLO (Forward Link Only)), ISDB, ATSC, etc.
  • Embodiments of the present invention are linked to a smart device A broadcast signal processing method of a portable digital broadcast receiver and a portable digital broadcast receiver with a plurality of tuners, which is applied to a digital broadcast service environment providing both low quality mobile broadcast and high quality digital broadcast service simultaneously.
  • the embodiment of the present invention is based on processing signals of low quality mobile broadcasting (ie, 1-Seg broadcasting) and high quality digital broadcasting (ie, full-seg broadcasting) of Japan having such a mobile broadcasting service environment.
  • a broadcast signal processing method of a portable digital broadcast receiver and a portable digital broadcast receiver with a plurality of tuners interoperating with a smart device will be described.
  • the present invention can be applied to all methods such as DMB (Digital Multimedia Broadcasting), DVB (Digital Video Broadcasting), and Media Flow (Media FLO (Forward Link Only)). Can be applied.
  • FIG. 1 is a block diagram of a digital broadcast viewing system of the present invention composed of a smart device and a portable digital broadcast receiving device interoperating with the smart device.
  • the receiver and the components for viewing are integrated so that the volume and power consumption and weight of the antenna and power supply, especially in the fixed type Due to the limited installation location, it is impossible to convert it to a portable device.
  • the digital broadcasting viewing system of the present invention utilizes a smart device, which is a mobile device that has a function of playing multimedia content, as the broadcast playback device 200, and focuses on the broadcast receiving function that the smart device does not have. It is configured based on the digital broadcast receiving apparatus 100 that is manufactured as a portable portable receiver as a separate portable receiver.
  • the digital broadcast receiving apparatus 100 and the broadcast reproducing apparatus 200 are connected through a wired / wireless network and interworked in a manner of exchanging a request / response for broadcast reception through network communication.
  • the digital broadcast receiving apparatus 100 processes the input broadcast stream of the received broadcast on request and converts the received broadcast stream into a processed broadcast output stream under the control of a built-in reception / service control application program, and converts it into a processed broadcast output stream.
  • the digital broadcast reception apparatus 100 (or the built-in reception / service control application) may request a broadcast reception function and related information at the request of the broadcast playback device 200 (or the built-in reception / playback control application). It is conceptualized as a server that provides control services.
  • the digital broadcast receiving device 100 functions as a server by internal interaction between the broadcast receiving device (hardware) and the built-in reception / service control application.
  • the smart device which is the broadcast reproducing apparatus 200, is a conceptual broadcast reproducing apparatus 200 in which a reception / playback control application installed in the form of an application program (for example, an APP) and hardware or software of the smart device control mutual functions. It is conceptualized as a client that enables viewing of a broadcast.
  • an application program for example, an APP
  • the digital broadcasting viewing system of the present invention is conceptualized and developed as a server / client structure, and thus, even in a technical implementation, proven standard technologies and implementation technologies such as various protocols and platform APIs required for implementing the existing server / client model. It can be applied as it is, it is possible to easily implement a reliable and optimized system.
  • the reception / playback control application program of the broadcast reproducing apparatus 200 is a digital broadcasting receiver for interworking between devices such as a device search request and a mutual authentication start request, that is, a request for mutual authentication or pairing, a channel search request, and a broadcast viewing request message. And transmits the (processed) broadcast stream for the broadcast channel selected by the user to the smart device by a series of processes in which the reception / service control application built in the digital broadcast reception device 100 responds thereto. The user can watch the broadcast.
  • the portable digital broadcast receiving apparatus receives and processes one or more of high definition digital broadcasting and low quality mobile broadcasting sequentially or simultaneously according to the broadcast viewing request message, and the broadcast reproducing apparatus 200 transmits the high definition digital broadcasting. And receive one or more processed broadcast streams of low quality mobile broadcast sequentially or simultaneously.
  • Broadcasting request message is a message or data about a viewing request of a channel selected by a user through a smart device, and the reception / service control application of the digital broadcasting receiving apparatus 100 together with the channel viewing request for the channel selected by the user.
  • the server is transmitted to the server in the form of a network packet, and the reception / service control application program (server) transmits a high definition digital broadcast receiver, a low quality mobile broadcast receiver, and a broadcast stream through a system controller, which will be described later, according to the broadcast viewing request message.
  • the conversion section high definition broadcast stream conversion section and low definition broadcast stream conversion section
  • the network interface section high definition broadcast stream socket, low definition broadcast stream socket, control socket
  • the power supply control unit is controlled to supply the power supply only to the components necessary for each processing.
  • the broadcast viewing request message includes the channel selection input UI of the smart device and the terminal playback capability, which is information on the multimedia playback capability of the smart device, that is, the video and audio playback capability. Information is included.
  • the selected channel information includes information ("Full-Seg” or "One-Seg”) for identifying whether the channel selected by the user belongs to a channel belonging to a high quality digital broadcast or a channel belonging to a low quality mobile broadcast and the channel frequency information of the corresponding channel. .
  • the method further includes a number (service ID) of a broadcast program to be selected to select only one of them.
  • the demultiplexer extracts only audio, video, and additional information of the selected program according to the number (service ID) of the broadcast program to be selected.
  • the terminal playability information may include a container format (ie, a format (file format) for bundled multimedia data (eg, MPEG-2 TS TS, MP4, etc.)) or a transmission protocol (eg, HLS) supported by the terminal, that is, the platform of the smart device.
  • a container format ie, a format (file format) for bundled multimedia data (eg, MPEG-2 TS TS, MP4, etc.)
  • a transmission protocol eg, HLS
  • the video encoding method MPEG-2 Video, H.264 Video, etc.
  • the video encoding method that the terminal can process as the information required by the terminal, the detailed settings (profile, level, etc.) of the video encoding method, the maximum video resolution and frame that can be processed.
  • Information such as rate, video bitrate, and the like is included.
  • audio encoding schemes MPEG-2 AAC, MPEG-4 AAC, etc.
  • audio encoding detailed settings profiles, etc.
  • voice information to be extracted from the input audio stream, left and right or dual- mono channel number
  • the number of audio channels Multi-chanel, Stereo, Monaural, etc.
  • audio sample rate and bit rate that the output device can process.
  • the terminal playability information is the multimedia playability information of the smart device collected by the reception / service control application, fixed information set in the platform of the smart device, or a setting selected by the user through the setting selection UI of the smart device based on this. Information.
  • the request / response message and the broadcast stream are basically provided in a manner in which two devices are directly connected through a wired / wireless network. In some cases, as shown in FIG. It may also be via the Internet.
  • the portable digital broadcast receiving apparatus 100 of the present invention should be developed as a portable broadcast receiving apparatus to satisfy the requirements of the portable mobile device.
  • the broadcast reproducing apparatus 200 is not limited to a portable device such as a handheld computer, a tablet computer, a mobile phone, a media player, a PDA, a smart phone, which are collectively referred to as a portable "smart device".
  • a portable device such as a handheld computer, a tablet computer, a mobile phone, a media player, a PDA, a smart phone, which are collectively referred to as a portable "smart device”.
  • Various types of devices ie, general PCs, smart TVs, etc.
  • FIG. 2 is a block diagram of a portable digital broadcast receiver of the present invention.
  • the portable digital broadcast receiver 100 includes a first digital broadcast receiver 110, a second mobile broadcast receiver 120, a broadcast stream converter 130, and a network interface 140. , The system controller 150, and the power supply control unit 160.
  • the first digital broadcast receiver 110 is a general RF signal processing stage for receiving a high quality digital broadcast signal according to channel selection of the system controller 150.
  • the first digital broadcast receiver 110 includes a first RF tuner and a first demodulator.
  • the second mobile broadcast receiver 120 is a general RF signal processing stage for receiving a low quality mobile broadcast signal according to channel selection of the system controller 150. It is configured to operate independently.
  • the first digital broadcast receiver 110 and the second mobile broadcast receiver 120 operate independently according to the control data signal of the system controller, and the system controller generates control data according to the selected channel information included in the broadcast request message.
  • the first digital broadcast receiving unit 110 and the second mobile broadcasting receiving unit 120 receiving the received data decode the digital broadcasting signal of a specific frequency according to the control data, respectively, and decode the digital broadcasting signal of the high quality digital broadcasting and the low quality mobile broadcasting.
  • the final broadcast input stream (eg, MPEG-2 TS) is output.
  • the broadcast stream converting unit 130 inputs the input broadcast streams of the high definition digital broadcast and the low quality mobile broadcast according to the terminal playability information included in the broadcast request message. Converts and generates an output stream of a format, and outputs the processed output broadcast stream. This may be implemented in various functional blocks in which hardware and / or software are combined.
  • the broadcast stream conversion unit 130 may be configured as one function block to simultaneously perform input broadcast stream processing of high definition digital broadcasting and input broadcast stream processing of low quality mobile broadcasting in a form in which a setting thereof is changed according to a control command of the system controller.
  • the high definition digital broadcast stream may be separated into a high quality digital broadcast stream changing unit and a low quality mobile broadcast stream converting unit to operate independently.
  • 3 is a configuration diagram of a first embodiment of the broadcast stream conversion unit, and is a configuration diagram of an embodiment configured to simultaneously perform input broadcast stream processing for high definition digital broadcasting and input broadcast stream processing for low quality mobile broadcasting.
  • the demultiplexing unit 131 is configured to display the high-definition digital broadcast and the low-definition mobile broadcast in the first broadcast signal receiver (first demodulator) and the second broadcast signal receiver (second demodulator), respectively.
  • first demodulator the first broadcast signal receiver
  • second demodulator the second broadcast signal receiver
  • the operation is substantially the same as the high definition stream converter 130A of the second embodiment to be described later.
  • the low quality stream converter 130B of the second embodiment is input. It is controlled to operate the same as.
  • the broadcast stream converter 130 may be implemented in various forms as in the first embodiment and the second embodiment, but there are only differences in which functional blocks are activated depending on the type of the input broadcast stream. There is no difference in the function of the functional blocks.
  • 4 to 6 are diagrams illustrating the structure of the second embodiment of the broadcast stream converter, in which the high quality broadcast stream converter 130A and the low quality broadcast stream converter 130B are separately configured.
  • the second embodiment of the broadcast stream converter of FIGS. 4 to 6 implements the encoding method and the multiplexing method of terrestrial digital broadcasting in Japan as the converter of the broadcast stream.
  • the input broadcast stream is MPEG-2 Video as the video encoding method, AAC Audio as the audio encoding method, XML-based multimedia encoding as the data encoding method, and MPEG-2 transport stream using MPEG-2 as the multiplexing method (MPEG- 2 TS).
  • the video encoding format of the input broadcast stream of high definition digital broadcasting is MPEG-2 Video
  • the audio is 5.1 channel AAC audio format (for HD broadcasting) or stereo ACC audio format (SD broadcasting).
  • MPEG-2 transport stream is an MPEG-2 transport stream in which the video encoding format is H.264 Video and the audio format is the stereo AAC audio format (that is, the container format is MPEG-2 TS).
  • the video encoding format of the smart device determined from the playback capability information of the received broadcast viewing request message is H.264 video
  • the audio encoding format is stereo AAC audio
  • the container format is MPEG-2 TS
  • 4 and 5 are diagrams illustrating the configuration and operation of an embodiment of the high definition broadcast stream conversion unit 130A.
  • FIG. 4 shows a configuration that operates when processing an input broadcast stream of HD broadcast
  • FIG. 5 shows a configuration that is activated and operates when processing an input broadcast stream of SD broadcast.
  • the high definition broadcast stream converting unit 130A determines whether the input broadcast stream of the high definition digital broadcast is an HD broadcast or an SD broadcast, and in the case of the HD broadcast, activates all function blocks to process the input broadcast stream, and only some blocks required for the SD broadcast. It is the case that it is implemented to process the input broadcast stream by activating.
  • the determination of whether the broadcast is HD or SD broadcast is performed by extracting the image size information recorded in the video encoding information and determining whether the system controller 150 is the broadcast HD or the SD broadcast.
  • the system controller 150 analyzes the channel selection information of the broadcast viewing request message received and includes the high definition broadcast stream converting unit together with the first broadcast receiving unit 120 by a control command when the broadcast request channel is included in the high definition broadcast. 130A) is activated, and items necessary for processing the input broadcast signal are set.
  • the high definition broadcast stream converter 130A includes a demultiplexer 131, a video transcoder 132, an audio transcoder 133, an additional information filter / converter 134, a multiplexer 135, and an encryption unit. 136.
  • the demultiplexer 131 receives an input broadcast stream (eg, MPEG-2 TS) of digital broadcasting from a first demodulator, and outputs video, audio, and data (input additional information data), respectively.
  • an input broadcast stream eg, MPEG-2 TS
  • video, audio, and data input additional information data
  • the video stream of the broadcast video format (MPEG-2 Video) and the audio stream of the broadcast audio format (stereo AAC audio) are output to the video transcoder 132 and the audio transcoder 133, respectively.
  • the information data is output to the additional information filter / conversion unit 134.
  • the video transcoder 132 includes a video decoder 132a, a video reprocessing unit 132b, and a video encoder 132c, and controls commands of the system control unit 150 according to the terminal playing capability information included in the broadcast viewing message. Is set or changed to convert the video stream of the high definition broadcast video format and the audio stream of the high definition broadcast audio format into a video stream of the terminal video format and an audio stream of the terminal audio format, respectively, played by a smart device. .
  • the video decoder 132a decodes an input video stream, for example, an MPEG-2 video format video stream and outputs the video signal.
  • the output video signal is output as a YUV video signal, and in some embodiments, may be decoded into an RGB video signal.
  • the video reprocessing unit 132b receives a YUV image signal inputted according to the video resolution information related to the image size of the terminal playback capability information received from the smart device by changing the setting / or setting by the control command of the system controller 150. To scale. For example, a 1440X1080 YUV video signal decoded from an HD broadcast stream is reduced in accordance with video resolution information, for example, to a resolution of 1280X720.
  • the video bit included in the terminal playback capability information in the process of transcoding is converted by the video encoder. Since the transcoding is performed according to the rate, the translating process of changing the bit rate only with the same format of the input broadcast stream and the output broadcast stream is not performed. Even in the present embodiment, if the terminal video format of the output stream included in the terminal playability information is MPEG-2 Video, translating is performed, and after decoding, the new bitrate is applied as a parameter and encoded immediately without conversion. Can be performed.
  • the video encoder 132c is set or changed according to a control command of the system controller 150 to adjust the scaled YUV according to the video encoding scheme of the terminal playability information, its detailed settings (profile, level), and video bit rate.
  • the video signal is re-encoded and encoded into a video stream that can be reproduced or requested in a smart device, that is, a video data stream in a terminal video format that is reproduced in a smart device. For example, it encodes into a video data stream of a new format such as H.264 Baseline Profile Level 3.1 of 8Mbps.
  • the audio decoder 133a decodes an input broadcast audio format audio stream, for example, an MPEG-2 5.1 channel audio stream, and outputs it as a general PCM sample signal.
  • the audio reprocessing unit 133b is set or changed by a control command of the system controller 150 to extract voice information (stream, left, or dual-mono channels) from the input audio of the terminal playback capability information received from the smart device.
  • Number) and 5.1 PCM samples of 5.1 channels are downmixed according to the information of the number of voice channels (Multi-chanel, Stereo, Monaural, etc.) that can be processed. For example, simply change to stereo (two channels).
  • Down mixing refers to the process of combining several channels into a smaller number of channels and, if the input is stereo or multilingual, to make stereo mono or to select and process only one of the multiple languages. Therefore, various methods of extracting only one mono audio and converting it to stereo or mono may be additionally performed.
  • the audio bitrate of the audio data of the input broadcast stream and the terminal playability information are different, for example, when the audio data of the input broadcast stream is 192 Kbps stereo AAC and the audio data of the terminal playability information is 128 kbps stereo AAC.
  • the audio reprocessing unit performs a "transforming" process of changing the bit rate.
  • the "translating" process may be performed by encoding the new bitrate as a parameter and immediately converting it without decoding after decoding.
  • the audio encoder 133c is set / or changed by a control command of the system controller 150, and thus the audio encoding method (MPEG-2 AAC, MPEG-4 AAC, etc.) and the audio encoding detailed setting (profile) Etc) and audio sample rate, bitrate, etc., which can be processed by the output device, and re-encodes stereo PCM samples to be played on the smart device or in the requested format, i.e., terminal audio format played on the smart device. Encode into data. For example, it encodes into a new audio data stream, such as the 128 Kbps AAC-LC format.
  • the additional information filter / conversion unit 134 is set or changed in response to a control command of the system control unit 150, and is an input broadcast stream of a high-definition digital broadcast output from the demultiplexer 131 (for example, Detailed information (broadcaster information: NIT, BIT, logo, program / service information: PAT, PMT, SDT, etc.) to filter the input side information data separated from MPEG-2 TS to be included in the container according to the terminal playability information.
  • Broadcast schedule information Outputs only a small amount of multimedia data that the terminal can directly process, such as EIT / EPG, other subtitles, data broadcasting, etc., and converts it into output additional information data required for re-multiplexing.
  • the output side information data is a data format required for different re-multiplexing according to each sub-type of the side information data, for example, data structures such as arrays / lists / trees in memory, relational database records or XML or JSON documents, image files, etc. It is output to the multiplexer in the form of.
  • the content protection information is extracted from the program / service information and output to the encryption unit.
  • the additional information is more dependent on the setting of the application complexity and the user's preference rather than the terminal playability.
  • the terminal when broadcasting station information (broadcasting station name) and program information (program title, etc.) are converted into XML or JSON format and multiplexed and transmitted, the terminal can be used to display it on the UI.
  • the broadcasting station logo image is converted into an image file such as png and re-multiplexed and transmitted
  • the terminal may display the broadcasting station name together with the broadcasting station name.
  • the broadcast schedule may be converted to XML / JSON format and then transmitted after multiplexing if the terminal UI provides the schedule function.
  • Subtitles can only be displayed on the screen when the user has selected subtitle display in Settings. This setting is controlled by including a subtitile: “on” in the broadcast request message.
  • the multiplexer 135 is set / or changed by a control command of the system controller 150, and is supported by the platform of the smart device of the terminal playability information or in a container format (MPEG-2 TS, HLS, MP4, etc.).
  • a container format MPEG-2 TS, HLS, MP4, etc.
  • the video, audio, and filtered side information data output from the video transcoder 132, the audio transcoder 133, and the side information filter / converter are output to the output stream format, for example, MPEG-. 2 Multiplex the output to TS.
  • the output stream is output to the network interface unit 140 as a processed broadcast stream.
  • the encryption unit 136 encrypts the output stream based on the extracted content protection information, and outputs the converted broadcast stream, that is, the protected MPEG-2 TS, to the network interface unit 140.
  • broadcast stream is protected by CAS
  • content protection must be made to protect it in smart devices.
  • General commercial broadcasting can protect the contents transmitted by using the CAS method unique to the broadcasting.
  • general smart devices do not have a smart card device or encryption processing unit for processing broadcast-specific CAS.
  • the digital broadcast receiver of the present invention includes a smart card device (not shown) and a descrambler (not shown) for CAS processing as a general integrated receiver, and the input broadcast stream is a CAS-processed high-definition digital broadcast stream. It descrambles the CAS-processed high-quality digital broadcast stream before demultiplexing.
  • the descrambled content is transmitted as is through the network as in the digital broadcasting receiver of the present invention, the function of the CAS used to prevent unauthorized theft or duplication of the content is disabled.
  • the digital broadcast receiver and the smart device need to be processed so that the receiver and the terminal can transmit and process the converted stream if necessary while maintaining the security state comparable to the CAS.
  • the digital broadcast receiving apparatus basically has hardware and software capable of processing CAS determined by the broadcast standard, and is configured to process descramble of the content.
  • a unique encryption key is generated during pairing for secure communication between the digital broadcasting receiver (server) and the smart device (client) of the present embodiment, and the encryption unit 136 is configured as described above.
  • the extracted content protection information protection, outputability, storage, parental control, etc.
  • the entire broadcast stream or only some packets to be protected are encrypted and converted into a broadcast stream, that is, protected MPEG-2.
  • Pairing is a process in which a server and a client calculate a shared key using a public key algorithm by exchanging a public key among encryption key pairs (public key and private key) generated at the time of device manufacturing (server) or app installation (client). It is defined as a protocol and implemented as a program.
  • the encryption unit first generates a random number when starting a stream transmission using the shared key obtained as a result of pairing, encrypts it with the shared key to generate a stream protection key, and encrypts the output stream data using the generated stream protection key. Send to the network. At this time, if the content protection information requires protection of only part of the video and audio, not the entire stream, the encryption unit can encrypt only part of the data (packets).
  • the digital broadcast receiving device and the smart device are each given a unique encryption key pair (public key and private key) different from the other digital broadcast receiving device or the other smart device.
  • Public and private keys are random data generated by running public key encryption algorithms such as RSA and ECC.
  • the PNT and the terminal exchange their public keys with each other, and then derive the shared key by using the formula of the public key encryption algorithm. (I.e., the result of the pairing is the shared key. Generated and confirmed as a security key)
  • Messages sent and received for control between the digital broadcast receiving device and the smart device are secured by encrypting them using a security key, which is a shared key obtained by the pairing.
  • the encryption unit 136 generates a "stream protection key" by generating a random number (called a stream ID) while starting the stream transmission and encrypting it using the "shared key” determined as a security key.
  • the output stream data is encrypted using a key and transmitted to the network, where the stream ID is also multiplexed according to the stream format, for example, in the case of MPEG-2 TS, the stream ID is converted into a section packet and transmitted.
  • the encryption unit may transmit to the network without performing encryption. If the content protection information is "protected", all TS packets are encrypted and transmitted.
  • the packet to which the encryption unit applies encryption changes its packet header so that a terminal receiving it can distinguish between an encrypted packet and a non-encrypted packet.
  • the terminal first checks the "stream ID" in the received stream and encrypts it with a "shared key” known by the terminal to create a "stream protection key”. The received stream is then decrypted using the generated “stream protection key”.
  • image size information recorded in video encoding information output from video 132a is extracted. It is determined whether the input broadcast stream is HD broadcast or SD broadcast. In the case of HD broadcast, all configurations including the entire video transcoder 132 and the audio transcoder 133 are activated and input as described above. Process the broadcast stream.
  • the video reprocessing unit 132b and the audio transcoder unit 133 may not be activated. This is because the video resolution of the SD broadcast is 720x480, which is smaller than the resolution requested by the smart device. Therefore, scaling by the reprocessing unit 132b is not necessary.
  • the conversion process of the audio transcoder section that is, the audio decoding, the downmixing of the audio reprocessing unit, and the re-encoding are performed. It is delivered to the multiplexer without going through the process of.
  • the system control unit may be implemented to control the audio transcoder unit to a rest state.
  • Such a characteristic configuration makes it possible to receive a high quality digital broadcast simultaneously or separately from a low quality mobile broadcast described later through the smart device, regardless of the multimedia playback capability of the smart device.
  • the low quality broadcast stream is converted together with the second broadcast receiver 120 by a control command.
  • the unit 130B is activated, and items necessary for processing the input broadcast stream are set.
  • the low definition broadcast stream converter 130B may include only the demultiplexer 131, the side information filter / converter 134, and the encryption unit 136, and control / set each of them.
  • the functions are the same as those of the demultiplexer 131, the additional information filter / converter 134, and the encryption unit 136 of the high definition broadcast stream converter 130A.
  • the present embodiment which follows the encoding method and the multiplexing method of the terrestrial digital broadcasting in Japan is different from the high definition broadcast stream conversion unit 130A according to the mobile broadcasting service environment provided by the different encoding method and the multiplexing method or the reproduction capability of different mobile devices. It is possible to implement some or all of the components) to process the input broadcast stream of the low quality mobile broadcast.
  • the network interface unit 140 converts an output broadcast stream output from the high definition broadcast stream converter 130A or the low quality broadcast stream converter 130B into a network packet and transmits it to a smart device. It performs the function.
  • the system control unit receives a high quality broadcast stream socket 141 for transmitting a high quality broadcast stream, a low quality broadcast stream socket 142 for transmitting a low quality broadcast stream, a pairing request from a smart device, a channel search request, and a broadcast viewing request. Control socket 143 for transmitting to 150 and sending the associated response.
  • Each of these is configured and controlled to operate independently, and when the broadcast viewing starts, the control command of the system controller 150 is analyzed according to whether the broadcast channel requested for viewing is a high quality digital broadcast, a low quality mobile broadcast, or simultaneous viewing. As a result, one or more of the high definition broadcast stream socket 141 and the low quality broadcast stream socket 142 for transmitting the low quality broadcast stream are activated to operate independently.
  • the high definition broadcast stream socket 141 and the low quality broadcast stream socket 142 may be sequentially operated to transmit each processed broadcast stream to the smart device.
  • each of them is configured to correspond to the high quality broadcast stream socket, the low quality broadcast stream socket, and the control socket of FIG. 7B installed in the reception / playback application of the smart device 200 to perform network communication with each other. .
  • a unique port is allocated to each broadcast so as to perform a socket communication, and thus a high definition broadcast in charge of network transmission of a processed stream for viewing a high definition digital broadcast.
  • the stream socket 141 and the low quality broadcast stream socket 142 in charge of network transmission of the processed broadcast stream for viewing of the low quality mobile broadcast are separately configured to be controlled independently, thereby simultaneously watching high quality broadcasting and low quality broadcasting.
  • Each stream can be transmitted and controlled without mutual interference.
  • the system controller 150 controls the overall operation of the portable digital broadcast receiving apparatus 100 as described above, and receives feedback information on the result of the performance of each component.
  • Such a control operation is performed based on various requests such as a pairing request, a channel search request, and a broadcast viewing request inputted from a smart device through a network interface, that is, a control socket, and accompanying messages.
  • control for broadcasting viewing is based on the channel selection information and the reproduction capability information included in the broadcasting viewing request message transmitted as the broadcasting viewing request from the smart device.
  • a portable digital broadcast receiver is provided with a power control function that minimizes battery consumption in order to enable a long-term use in a mobile environment and to be compact and lightweight to be suitable for a mobile environment.
  • the system controller 150 Apart from the control of each component, the system controller 150 generates a power mode signal, which is a power control signal, based on the broadcast viewing request message transmitted from the smart device as a client, and supplies the power mode signal to the power supply controller.
  • the supply unit is performed in a manner of minimizing battery consumption by actively blocking power supply for components unnecessary for the operation of the portable digital broadcasting receiver.
  • the system controller 150 is an internal configuration of each component that cannot be turned on or off independently, for example, an unnecessary configuration among a control socket, a high definition broadcast stream socket, and a low quality broadcast stream socket that is a reception unit of the network controller. Idle minimizes power consumption.
  • the power supply control unit is divided into power supply connections are divided into each component to supply power independently, and the power control unit and the power control unit configured to selectively connect / cut off the power supply connection It consists of a power supply such as a battery that is electrically connected and supplies power.
  • the present embodiment is described as controlling each functional block based on the second embodiment of the broadcast stream converter described above, but is not limited thereto and may be changed and implemented according to the division of each functional block of another embodiment.
  • the power supply control unit 160 of the power control system of the portable digital broadcasting receiver controls ON / OFF of the power supply according to the power mode signal which is a control command from the system controller 150.
  • a power supply unit 162 comprising a battery of a portable device and a necessary electric circuit.
  • the power control unit 161 is configured such that the power supplied from the power supply unit 162 is separated from the power supply (power supply 0 to power supply 6) to each component and can be independently turned on and off.
  • the power supply to each component is a system control unit, a memory, a first tuner and a first demodulator (first broadcast signal receiver), a high quality broadcast stream converter, a second tuner, and a second demodulator (second broadcast).
  • the signal receiver is divided into a power supply 0 to a power supply 6 that are independently supplied to each other, and are divided into a low quality broadcast stream conversion unit and a network interface unit.
  • the power mode signal which is a control command of the system control unit 150, one or more of the power to each component part is ON / OFF controlled.
  • the number of separated power sources may change when each component is functionally / physically integrated or separated.
  • the system controller 150 analyzes the broadcast viewing request message transmitted from the smart device that is the client, and based on the channel selection information and the terminal playback capability information included therein, the first tuner and the first demodulator (first demodulator). Broadcast signal receiver), a high-definition broadcast stream converter, a second tuner and a second demodulator (second broadcast signal receiver), a low quality broadcast stream converter, and a network interface unit to activate components necessary for processing input broadcast signals, and Set or change the setting (if the broadcast viewing request message for the other broadcasting channel is received from the smart device by the user's selection while watching the broadcasting, the setting should be changed).
  • the broadcast viewing request message is analyzed, and based on the channel selection information and the terminal playing capability information included therein, the component to be supplied with power is determined, and only the power of the component required for processing the input broadcast signal is turned on. Unnecessary components generate a power-mode signal that turns off.
  • the system controller 150 generates a power mode signal based on the system state information / preset information and the analysis result of the broadcast viewing request message and supplies it to the power controller.
  • the power mode may be classified into a power off mode, a standby mode, a sleep mode, and a normal mode like a general electronic device.
  • Each power mode is set as follows in connection with the processing of the input broadcast stream of the portable digital broadcast receiver apparatus incorporating a plurality of tuners characteristic of the present invention.
  • the system controller 150 transmits the power mode signal allocated to the stand-by mode to the power controller 170 after the system is initialized and the system power is turned on, so that the system controller 150, the memory 170, and the network interface unit ( Only the power supply (power supply 0, power supply 1, and power supply 6) connected to the 140 is turned on, and the controller waits for a request from the smart device (client).
  • the control socket 143 of the network interface unit 140 is activated under the control of the system controller 150, and the high quality broadcast stream socket 141 and the low quality broadcast stream socket 142 are deactivated and controlled to be in the idle state.
  • one tuner and a first demodulator (first broadcast signal receiver), a high quality broadcast stream converter, a second tuner and a second demodulator (first broadcast signal receiver), and a low quality broadcast stream converter that are not required for standby operation OFF.
  • the power for each component may be set to be controlled in an idle state (Idle state), and the control in the idle state may be Stand.
  • Idle state an idle state
  • Stand the control in the idle state
  • Stand-By Mode not only when the device is turned on and initialized, but also when the preset time (Wake up time) is set in Sleep Mode, which will be described later, or when there is a specific action such as a user's button operation, the system initialization is performed. You can enter Stand-By Mode again.
  • the display when there is no broadcast viewing request or signal for a predetermined time in the broadcast viewing mode to be described later, that is, when there is no broadcast watching request, the display enters the stand-by mode again.
  • the device If there is no request from the client of the smart device for more than a predetermined time in the stand-by mode or the connection with the client is released, the device enters the sleep mode using the minimum power, and the power connected to the system controller 150 (power 0) All components except the power are turned off.
  • the system controller 150 only a specific part, which is a part of the core part (interrupt input), is controlled to be activated and the other part is in the idle state as the minimum clock.
  • the control of the power source for the broadcast viewing is based on the channel selection information and the reproduction capability information included in the broadcast viewing request message transmitted with the broadcast viewing request in the smart device.
  • the system controller analyzes the broadcast request request message and enters one of the following three states.
  • the system controller includes a second tuner / second demodulator (second broadcasting signal receiving unit) related to the processing of low quality mobile broadcasting; Supply a power mode signal that turns off the power (power 4 and power 5) of the low-quality broadcast stream converter to cut off the power supply connected to them, or control it in idle mode and turn on the other power. Activate it.
  • the low quality broadcast stream socket 142 may be controlled to be idle.
  • the system controller may include a first tuner / first demodulator ( Supply a power mode signal for turning off the power (power 2, power 3) of the first broadcast signal receiver and the high-definition broadcast stream converter to control the power supply connected to the power supply control unit, or to cut off the power connection connected thereto. Control and power on other than ON.
  • the high-definition broadcast stream socket 141 may be controlled to the idle state.
  • the memory 170 is built in the system control unit and is shared with other components of the portable digital broadcast receiving apparatus 100 or physically exists and installed in various forms to store various settings of the portable digital broadcast receiving apparatus 100, It can be used as an input / output buffer for video and audio signals, and stores information necessary for processing a broadcast stream.
  • Broadcast playback device 200 (smart device)
  • FIG. 10 is a functional block diagram of the broadcast playback apparatus 200 of the present invention.
  • the broadcast reproducing apparatus 200 is implemented in a so-called “smart device", and such smart device may include a memory, a memory controller, one or more processing units (CPUs), a peripheral interface, and an RF. Circuitry, audio circuitry, speakers, microphones, input / output (I / O) subsystems, touchscreens, other input or control devices, and hardware components of external ports.
  • a smart device may include a memory, a memory controller, one or more processing units (CPUs), a peripheral interface, and an RF. Circuitry, audio circuitry, speakers, microphones, input / output (I / O) subsystems, touchscreens, other input or control devices, and hardware components of external ports.
  • the broadcast reproducing apparatus 200 of the present invention has a hardware and software and a reception / playback control application program of a smart device such as one or more hardware components of the smart device and one or more dedicated signal processing dedicated applications / dedicated integrated circuits / installed applications. It is implemented by combining in various ways.
  • FIG. 10 is conceptualized as a configuration related to broadcast viewing of the present invention except for a general configuration of a smart device, and an embodiment of the broadcast reproducing apparatus 200 will be described with reference to FIG. 10.
  • a reception / playback control application basically collects multimedia playback capabilities of a smart device, a receiver controller 210 which controls a function of transmitting various requests to a portable digital broadcast receiver and receiving a response thereof.
  • a broadcast viewing request message generator 220 for receiving a user's setting and channel selection information related thereto and generating a broadcast viewing request message, and receiving a high quality broadcast stream and / or a low quality broadcast stream transmitted from a portable digital broadcast receiver.
  • a broadcast reception / playback control unit 230 for controlling a function for playback, and various UIs required for driving the broadcast playback device on a touch screen of a smart device, and control a function for receiving a user's touch input accordingly. It consists of a UI (input / output) control unit 240.
  • the broadcast stream processing unit 250 processes the high quality broadcast stream and the low quality broadcast stream received from the portable digital broadcast receiver 100 through the network interface unit simultaneously or separately to display them on the display device of the smart device in a predetermined manner. ) May be included. Some of the functional blocks of the broadcast stream processing unit 250 may be implemented by controlling the functions of the hardware / software configuration already built in the smart device.
  • the main function of the receiver controller 210 is to control the control socket of the network interface 251 to transmit the broadcast viewing request message generated by the broadcast viewing request message generator 220 to the portable digital broadcast receiving device 100 and processed.
  • the main function of the broadcast signal processing of the portable digital broadcast receiver 100 is controlled.
  • it performs a function of controlling the transmission / reception of a request / response for "pairing" through mutual authentication and the like.
  • the broadcast viewing request message generation unit 220 performs a function of generating a broadcast viewing request message.
  • the broadcast viewing request message includes selection channel information, which is information on a channel selected by a user through an input UI of the smart device, and terminal playback capability information, which is information on the playback capability of the video and video of the smart device.
  • the selected channel information which is information about a channel selected by the user, is information of a broadcast channel selected through an input UI (touch input) of a smart device, and the broadcast channel is a high-quality digital broadcast channel (Full-). Seg broadcast) or low quality mobile broadcast (1-Seg broadcast).
  • the type of broadcast may be stored as single data in association with a channel in advance, and the user may select a specific broadcast channel through an input UI including a channel information DB (not shown) stored in association with the broadcast channel. Then, the channel information DB may be searched to determine whether the selected channel is a high quality digital broadcasting channel (full-seg broadcasting) or a low quality mobile broadcasting (1-seg broadcasting), and the selected channel information may be generated by including it.
  • a high quality digital broadcasting channel full-seg broadcasting
  • a low quality mobile broadcasting (1-seg broadcasting
  • the frequency channel selection information of the selected channel is included, and when a plurality of broadcast programs are multiplexed on one frequency, the channel information further includes a number (service ID) of a broadcast program to select for selecting only one of them.
  • the terminal playability information is implemented by a method of adopting the user setting as the terminal playability by displaying the collected terminal playability information to the user and setting the user within a range of the collected terminal playability as shown in FIG. 17.
  • a low quality mobile broadcast that is sufficiently reproducible by the playback capability of a smart device, it may be implemented to use a fixed set value.
  • the collection of the terminal playability information may be automatically performed by a separate user's selection or when the application is installed or driven before the user starts watching the broadcast.
  • a list of container types supported by the platform of the smart device is generated (MPEG2 TS, HLS, MP4, etc.). For platforms that do not provide information collection, use a predefined fixed setting.
  • each audio decoder is implemented as a hardware block, and in the case of a hardware block, the audio block and the output device can process the number of voice channels, sample rate, Obtain bitrate and profile information.
  • the fixed setting for each platform is used. The above series of information collection procedures are performed to collect the playback capability of the terminal.
  • the terminal playability information collected in this way includes a list of containers that can be processed, a list of video decoders listed according to priority, and a list of audio decoders listed according to priority such as hardware acceleration, profile, level, maximum resolution, and bitrate information of each decoder; Hardware acceleration, profile, number of voice channels, sample rate, bead rate information, etc. of each decoder are included as in the following example.
  • sample-rates “48000, 44100, 32000”, bitrate-max: 384000 ⁇ ,
  • the UI which the user can select one among the top decoders of the video decoder list supports User selection is provided by providing the maximum image size, bitrate, profile, UI that can be set lower than the level, the number of voice channels supported by the top decoder in the audio decoder list, the sample rate, the bitrate, and the UI for setting the profile.
  • the input is reflected in the playability information as shown in the example below.
  • audio-codec “aac”,; Select AAC from the audio-codecs list
  • audio-sample-rate 48000,; 48KHz sample rate
  • the smart device can reproduce itself without using the transcoding function of the stream conversion unit owned by the digital broadcast receiver (server) in a manner that finally reflects the quality level of the broadcast according to the type of broadcast to be watched. Can be played by the decoder unit embedded in the application of the smart device, so that the user's setting is ignored and the stream conversion unit is not used for the viewing request message. Fill out and send.
  • the playability information including the stream conversion unit setting generated before the viewing request message is used.
  • the broadcast viewing request message including the selected channel information and the terminal playing capability information generated as described above is as follows.
  • Video-codec “h.264”,; Video format that the terminal can play
  • Audio-codec “aac”,; Audio format that terminal can play
  • audio-sample-rate 48000,; 48KHz sample rate
  • the broadcast reception / playback control unit 230 controls the broadcast stream processing unit 250 to control the functions for the reception and playback of the high quality broadcast stream and / or the low quality broadcast stream transmitted from the portable digital broadcast receiver. Do this.
  • the UI (input / output) controller 240 displays various UIs required for driving the broadcast reproducing apparatus on the touch screen of the smart device, and controls a function for receiving a user's touch input.
  • the main UI and channel list UI such as a series of wireless network selection UI, channel search UI, and playback capability information.
  • a UI for performing the broadcast viewing method according to the present invention such as a setting UI, is provided, and each information or function is selected by the user by a user's touch input, and the UI (input / output) controller 240 performs the information or function. It receives the user's selection for and delivers it to each component to control each function of the broadcast reproducing apparatus 200.
  • the broadcast stream processing unit 250 transmits the broadcast viewing request message generated as described above to the broadcast receiving device 100 and receives the processed high quality broadcast stream and the processed low quality broadcast stream, respectively, according to the broadcast viewing request message. Descrambles the input high definition broadcast stream and demultiplexes it into an audio stream and a video stream in a manner set in the reproduction capability information, respectively, and outputs a video signal (for example, a YUV image or an RGB image). And a high quality stream reproducing unit 525 for reproducing and decoding the audio signal (PCM sample).
  • the descramble process when a processed broadcast stream transmitted without an encryption process is input in the digital broadcasting receiver, the descramble process may be selectively omitted.
  • the input low quality broadcast stream is descrambled and demultiplexed into an audio stream and a video stream (eg, an H.264 video packet and an AAC audio packet) and decoded in a manner set in the reproduction capability information.
  • a low quality stream reproducing unit 525 for reproducing and decoding video signals (eg, YUV images or RGB images) and audio signals (PCM samples).
  • the digital broadcasting receiver transmits the processed broadcast stream without performing encryption. Accordingly, the low quality stream reproducing unit 525 processes the processed low quality broadcast stream that is normally input without the descrambling process, and is set to perform the descramble process when the encrypted broadcast stream is input. In Japan, encryption is required even for low quality mobile broadcasts, so the decryption process is the default.
  • the second scaler 254 to scale, the video signal (YUV video signal) output from the first and second scalers are combined into one screen and then transmitted to the output device (in the case of simultaneous viewing), or selectively output.
  • the video mixer 255 that controls (for single viewing) the audio signal (PCM sample) of the high definition broadcast stream and the audio signal (PCM sample) of the low definition broadcast stream are mixed into one PCM signal (for simultaneous listening), And optionally an audio mixer 256 for controlling the output (in the case of single listening).
  • the broadcast stream processing unit 250 operates by activating only components necessary for viewing a broadcast under the control of the broadcast reception / playback control unit 230.
  • the high-definition stream socket the high-definition stream playback unit 252, the first scaler 254, and the audio mixer 256 are controlled to be activated.
  • the low quality stream socket the low quality stream reproducing unit 253, the second scaler 254, and the audio mixer 256 may be controlled to be activated.
  • all components are controlled to be activated and operated.
  • FIG. 11 is a flowchart of a broadcast signal processing method of a portable digital broadcast receiving apparatus incorporating a plurality of tuners for interfacing with a smart device of the present invention and receiving a high quality digital broadcast and a low quality mobile broadcast.
  • a built-in reception / service control application is executed to initialize various variables for executing software, initialize each component of a broadcast receiving apparatus, and broadcast the broadcast.
  • a server start / device initialization step (S100) of setting a receiving device to a ready state for responding to a device search request from the smart device is performed.
  • FIG. 12 is a flowchart of a server start / device initialization step S100.
  • the system controller automatically receives a server (receive / Service control application), and the reception / service control application program receiving the initialization / initialization of various variables to enter the server into the initialization state, the server, each component of the device, for example, the first broadcast receiving unit (A first RF tuner and a first demodulator) and a first broadcast receiver (a first RF tuner and a first demodulator), a high quality / low definition stream converter, and a control signal for initializing a network interface to a system controller, After the process of setting the power saving state, the server enters the ready state for receiving a device discovery request, that is, the device announcement state, and stands-by mode. It enters.
  • a device discovery request that is, the device announcement state, and stands-by mode. It enters.
  • FIG. 13 is a flowchart of a client device search request processing step S200.
  • S300 is a flow chart of the mutual control authentication process (S300) between the digital broadcast receiver (server) and the smart device (client).
  • a client device search request processing step (S200) when a device search request is received from a smart device which is a client in the stand-by mode, a client device search request processing step (S200) is performed. Subsequently, a mutual control authentication step (S300) of receiving a mutual authentication start request from the smart device and mutually authenticating in response thereto is performed, and the mutual authentication step (S300) is a pairing step according to a preset security scheme, and the terminal is paired.
  • the server In the process of sending the server, it sends its public key to the server and, in response, the server also sends its public key to the client.
  • Each user generates a shared key and sends a verification request to the server to verify it.
  • the server also verifies the contents and sends a verification response.
  • the public key and the private key in the mutual authentication process refer to random data generated by driving a public key encryption algorithm such as RSA or ECC.
  • a public key encryption algorithm such as RSA or ECC.
  • the digital broadcasting receiver and the terminal exchange their public keys with each other, and then derive the shared key by using a formula of the public key encryption algorithm. (The result of pairing is the shared key. Generated and confirmed as the security key of FIG. 14)
  • the encryption unit 136 generates a "stream protection key" by generating a random number (called a stream ID) while starting the stream transmission and encrypting it using the "shared key” determined as a security key. Encrypts the output stream data using a key and transmits it to the network, where the stream ID is also multiplexed according to the stream format and transmitted, for example, in the case of MPEG-2 TS, the stream ID is converted into a section packet and transmitted.
  • the packet to which is applied is configured to change the packet header so that the terminal receiving the packet can distinguish the encrypted packet from the other.
  • the smart device first checks the "stream ID" in the received stream and generates a "stream protection key” using an encryption key that is known as a “shared key”. Then, the generated stream is decrypted, that is, decrypted using the generated “stream protection key”.
  • 15 is a flowchart of a broadcast viewing step S400.
  • a broadcast viewing request message for one or two broadcast channels selected by a user may be received from the mutually authenticated smart device, and at least one selected from among a high quality digital broadcast and a low quality broadcast.
  • Selected channel information which is information about a channel selected by a user
  • terminal playability information which is information on a playback capability of videos and videos of the smart device
  • the selected channel information includes a channel of a high definition digital broadcasting channel and a low quality mobile broadcasting channel.
  • Including identifying information and The broadcast signal for the broadcast channel selected by the user is processed and transmitted to the smart device based on the selected channel information and the playability information.
  • the broadcast viewing request message analyzing step S420 of analyzing the broadcast viewing request message and analyzing the playability information and the channel selection information of the smart device is performed.
  • the process of receiving and processing high definition digital broadcasting includes setting or changing a conversion method of the high definition broadcasting stream according to the reproduction capability information of the smart device when it is determined that the high quality digital broadcasting channel is selected from the channel selection information.
  • the high definition digital broadcast signal transport stream (TS) conversion step (S450) may be performed by receiving and demultiplexing a transport stream (TS) of the high definition digital broadcast signal to output a video stream, an audio stream, and an additional input.
  • Hoki e.g.
  • whether to perform an encryption process may be selectively performed.
  • the video transcoding process includes the capability of reproducing the video signal output by decoding the video stream from the result of decoding the video stream. According to the information, it may be performed to perform reprocessing by performing one or more processes of scaling or translating, and when the smart device such as an SD broadcast is large enough to be reproduced, the video transcoding process may be performed by one or more of scaling or translating. The process may be omitted.
  • the process of receiving and processing a low quality mobile broadcast when it is analyzed that the low quality mobile broadcast channel is selected from the channel selection information, a low quality setting or changing the conversion method of the low quality broadcast stream according to the playback capability information of the smart device Setting / changing a broadcast stream conversion unit (S431); A second broadcast signal receiver pre-international language step (S441) for selecting a selected low quality mobile broadcast channel and outputting a transport stream (TS) of the low quality mobile broadcast signal according to the channel selection information; A step of converting a low quality mobile broadcast signal transport stream (TS) for generating an output stream of the low quality mobile broadcast signal by converting the transport stream (TS) of the low quality mobile broadcast signal in a manner set according to the reproduction capability information of the smart device (S451). ); And a network packet conversion transmission step (S461) of converting the output stream of the low quality mobile broadcast signal into a network packet and transmitting the same to the smart device.
  • TS transport stream
  • the step of converting the low quality mobile broadcast signal transport stream (TS) may be performed by receiving and demultiplexing a transport stream (TS) of the low quality mobile broadcast signal to add a video stream, an audio stream, and an additional input. It includes only the demultiplexing process that separates the information data stream, and additionally encrypts the security key generated during mutual authentication (pairing) and the stream protection key derived therefrom (for example, a 128-bit random number "stream protection key"). It may be performed to transmit the protected output stream to the smart device by performing a process of encrypting the input broadcast stream using the encryption key by generating a.
  • a process of receiving and processing digital broadcasts and a process of receiving and processing low quality mobile broadcasts are simultaneously performed to transmit two processed broadcast streams simultaneously or sequentially to a smart device.
  • the process of receiving and processing high-definition digital broadcasting is performed by evaluating the signal quality of the high-definition digital broadcasting, for example, CNR and RSSI, to determine whether normal video signal processing is possible (S442).
  • a process of searching for a corresponding channel of a corresponding low quality mobile broadcast (1-Seg broadcast) is performed (S443) to correspond to the searched low quality mobile broadcast (1-Seg broadcast).
  • a process of receiving and processing a low quality mobile broadcast may be performed, and a process of receiving and processing a high quality digital broadcast may be terminated. Through this, it is possible to automatically switch from watching the high definition digital broadcast for the same broadcast channel to watching the low quality mobile broadcast according to the propagation environment, thereby coping with the reception propagation environment.
  • 16 is a flowchart of a broadcast signal processing procedure between a smart device interworking with a portable digital broadcast receiver.
  • the channel information is generated by a method of determining whether the selected channel is a high quality digital broadcast channel or a low quality mobile broadcast channel with reference to the channel information DB. And the terminal reproducing capability information.
  • the embodiment of generating playability information has already been described in detail with reference to the broadcast viewing request message generating unit 220 as shown in FIG. 17 and will be omitted.
  • the smart device generates a broadcast viewing request message including channel information and playability information and transmits the channel viewing request to the portable digital broadcasting receiver through the control socket as a channel viewing request, and receives the portable digital broadcasting receiver through the control socket.
  • a broadcast viewing request message including channel information and playability information and transmits the channel viewing request to the portable digital broadcasting receiver through the control socket as a channel viewing request, and receives the portable digital broadcasting receiver through the control socket.
  • the portable digital broadcast receiver responds to a channel viewing request by transmitting the first broadcast stream processed by the broadcast viewing step S400 using a high quality broadcast stream socket and / or a low quality broadcast stream socket.
  • the smart device as a client Prepare a decoder to decode the transmitted processed broadcast stream and transmit data (processed broadcast stream) through the request for data from the smart device and the high quality broadcast stream socket and / or the low quality broadcast stream socket of the portable digital broadcast receiver. And the process of receiving, decoding and outputting data through the high quality stream socket and / or the low quality stream socket continues until the end of viewing of the broadcast.
  • these requests and responses may be performed sequentially to reduce the malfunction of the device and the interference between broadcast signals.
  • FIG. 18 is a flowchart of the overall execution process of a built-in reception / service control application program for performing a broadcast viewing procedure of a user in an associated smart device.
  • reception / service control application displayed in the form of an icon on a touch screen or a general screen
  • the reception / service control application is executed.
  • a splash screen is displayed to start a digital broadcast reception procedure in the smart device (S00).
  • the apparatus detects whether the wireless network can be connected (S11), connects to the wireless network as possible in a preset manner (S10), and when a wireless network selection request is made by the user, or connection of the preset wireless network is not possible. If not, the wireless network setting UI of FIG. 22 (1) is executed (S12) to allow the user to select a desired wireless network (S10). Connection of the wireless network by the user's selection is performed through the sequence of FIG.
  • pairing is performed to connect with the portable digital broadcasting apparatus (S20). If the pre-paired portable digital broadcasting device does not exist or is not in a state capable of pairing, the device search request is transmitted to the portable digital broadcasting device described with reference to FIGS. 12 and 13 to receive a response thereto, and mutual authentication is performed.
  • a pairing process which is a process of mutual authentication, is performed through a series of processes of transmitting a start request and receiving a response thereto (S22), and performs a connection process with a paired portable digital broadcasting apparatus (S20).
  • the main UI as shown in FIG. 22 (4) is executed (S30), and when there is a click of the "network" button in the main UI of FIG. 22 (4), the process of executing the (1) wireless network setting UI is performed. If there is a touch of the "channel search" button (S12), the channel search UI of FIG. 22 (2) is executed to create a channel list of channels that can be received through a request / response with the portable digital broadcasting apparatus as a server. Or updated and displayed (S31). The channel search process is described in detail with reference to FIG. 20.
  • the setting UI of FIG. 22 (3) is executed to allow the user to select and set among the collected terminal reproduction capability information described above (S32).
  • the terminal reproduction capability information which displays the collected terminal reproduction capability information described in FIG. 17 to the user to be set by the user within the collected terminal reproduction capability range and adopts the user setting as the terminal reproduction capability.
  • the generation method is implemented.
  • the collection of the terminal playability information may be performed in various ways in which the application is executed at the same time as the execution of the application program and the result is stored, and performed when the user clicks the setting button or is re-executed and updated.
  • step S41 a single broadcast viewing start procedure is performed (S41).
  • a plurality of broadcast viewing start procedures are performed (S42). At this time, a preset broadcast viewing UI for viewing a single broadcast or a preset broadcast viewing UI for viewing a plurality of broadcasts is selected, and preparation for displaying / updating the screen of the selected broadcast is completed.
  • a broadcast request request message including broadcast channel information about the broadcast channel selected by the user and the terminal playability information is prepared and transmitted to the digital broadcast receiver, and thus, the digital broadcast receiver is connected to a specific channel.
  • the broadcast is to be watched (S44).
  • the channel list is displayed as shown in FIG. 22 (5) by setting or by the user during viewing of the broadcast, and the above process is repeated when there is a new channel selection of the user in the channel list.
  • 19 is a flowchart illustrating a process of establishing a wireless network connection in a smart device. 19, a process of starting a wireless network selection UI according to a user's selection, a process of searching and listing a wireless network, a process of displaying a wireless network list on the wireless network selection UI, and a user's wireless network as shown in FIG. 19. Determining whether an item is selected, performing a process of connecting to the selected wireless network (receiving an IP address) if the selection of a specific wireless network is performed, and terminating the wireless network selection UI.
  • 20 is a flowchart illustrating a process of searching for a receivable channel in a smart device.
  • a search process of a receivable channel in a smart device will be described with reference to FIG. 20.
  • Searching for a receiveable channel in a smart device is basically performed by a message request / response process between a smart device as a client and a portable digital broadcast receiving device as a server having a broadcast receiving function. As described above, this is performed by interworking between the control socket / system control unit of the portable digital broadcast reception apparatus and the receiver control unit / control socket of the broadcast playback apparatus of the smart device.
  • FIG. 22 (2) is executed by the channel search UI, and the client transmits a channel search start request to the server.
  • the server starts channel search, loads a frequency list for a broadcast channel, sequentially selects a broadcast channel item of the frequency list, and uses an RF receiver (first) as a frequency of the broadcast channel item. RF tuner and / or second RF tuner) to tune the frequency. Accordingly, the RF receiver determines whether a signal of the corresponding broadcast channel is detected.
  • the channel discovery message for the corresponding broadcast channel is transmitted to the smart device that is the client, and the client, according to the channel discovery message, updates the display of the corresponding channel list and displays the found receivable channel. Save it.
  • This process is repeated until the channel search request is canceled by the user's touch of the "end" button or until the broadcast signal is detected for the broadcast channel item of the frequency list. If the channel search request is canceled, the client sends the channel search cancel message to the server, and the server sends the channel search complete message to the client when the channel search cancel message is received or the channel search is completed for all items, and the channel search ends. do.
  • FIG. 21 is a flowchart of a process of adopting the terminal playing capability by selecting a desired setting among the terminal playing capabilities collected by the user by executing the setting UI of FIG. 22 (3) in the smart device.
  • the user By displaying the collected terminal playability information to the user, the user can set within the range of collected terminal playability to generate the terminal playability information that adopts the user setting as the terminal playability based on the broadcast signal such as salpin bar
  • the process of receiving / processing / transmitting / viewing is performed.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La présente invention concerne un dispositif récepteur de diffusion numérique portatif comportant une pluralité de syntoniseurs intégrés et qui est relié à un dispositif intelligent, et un procédé de traitement de signaux numériques utilisant ce dispositif. De plus, la présente invention concerne un système et un procédé de commande de la puissance d'un dispositif récepteur de diffusion numérique portatif comportant une pluralité de syntoniseurs intégrés. Plus spécifiquement, la présente invention se réfère à un dispositif récepteur de diffusion portatif comportant une pluralité de syntoniseurs intégrés et qui est relié à un dispositif intelligent, à un procédé de traitement de signaux numériques au moyen de ce dispositif, ainsi qu'au système et au procédé de commande de la puissance du dispositif récepteur de diffusion numérique portatif. Ce dispositif récepteur de diffusion portatif comportant la pluralité de syntoniseurs intégrés, et relié au dispositif intelligent, est utilisé dans divers environnements de télécommunication, peut être relié à divers dispositifs intelligents afin de recevoir des signaux de diffusion numériques de multiples normes de diffusion, peut traiter ceux-ci dans des formats pouvant être traités par les dispositifs intelligents et transmettre ensuite ces signaux, afin de permettre une visualisation simultanée ou séquentielle de multiples diffusions numériques de diverses normes de diffusion, selon les capacités de lecture multimédia ou les paramètres d'utilisateur des dispositifs intelligents.
PCT/KR2012/010702 2012-12-07 2012-12-10 Dispositif récepteur de diffusion numérique portatif comportant une pluralité de syntoniseurs intégrés, procédé de traitement de signaux numériques au moyen de ce dispositif, et système et procédé de commande de la puissance d'un dispositif émetteur-récepteur de diffusion numérique portatif WO2014088139A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2012-0142258 2012-12-07
KR1020120142258A KR20140074064A (ko) 2012-12-07 2012-12-07 복수의 튜너를 내장한 휴대형 디지털 방송수신 장치의 전원 제어시스템 및 전원제어 방법.
KR1020120142205A KR20140074039A (ko) 2012-12-07 2012-12-07 복수의 튜너를 내장한 휴대형 디지털 방송수신 장치 및 이를 이용한 방송신호 처리 방법.
KR10-2012-0142205 2012-12-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008199111A (ja) * 2007-02-08 2008-08-28 Sharp Corp デジタル放送受信システム
US20080222690A1 (en) * 2007-03-08 2008-09-11 Lg Electronics Inc. Terminal and method for providing broadcast information
JP2010154301A (ja) * 2008-12-25 2010-07-08 Pioneer Electronic Corp 放送信号受信装置、放送信号受信方法、及び放送信号受信プログラム
US20120283860A1 (en) * 2011-05-04 2012-11-08 Chih-Chun Ho Energy-saving control system for automatically turning on/off electronic device
KR20120126775A (ko) * 2011-05-12 2012-11-21 전자부품연구원 다중 대기모드를 갖는 방송수신장치 및 그의 전원 제어 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008199111A (ja) * 2007-02-08 2008-08-28 Sharp Corp デジタル放送受信システム
US20080222690A1 (en) * 2007-03-08 2008-09-11 Lg Electronics Inc. Terminal and method for providing broadcast information
JP2010154301A (ja) * 2008-12-25 2010-07-08 Pioneer Electronic Corp 放送信号受信装置、放送信号受信方法、及び放送信号受信プログラム
US20120283860A1 (en) * 2011-05-04 2012-11-08 Chih-Chun Ho Energy-saving control system for automatically turning on/off electronic device
KR20120126775A (ko) * 2011-05-12 2012-11-21 전자부품연구원 다중 대기모드를 갖는 방송수신장치 및 그의 전원 제어 방법

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