WO2015060523A1 - Method and apparatus for processing broadcasting signal for panorama video service - Google Patents

Abstract

Disclosed are a method and an apparatus for processing a broadcasting signal for a panorama video service. A method for processing a broadcasting signal according to one embodiment of the present invention comprises the steps of: encoding a video stream for a panorama video service; generating service information including at least one of first information describing that the stream type is the video stream for the panorama video service and second information describing the aspect ratio of a panorama video; and transmitting the broadcasting signal including the encoded video stream and the generated service information.

Description

Method and apparatus for processing broadcast signal for panoramic video service

The present invention relates to a method for processing a broadcast signal for a panoramic video service and a broadcast signal processing apparatus for performing the method.

The broadcasting environment is changing drastically as analog broadcasting is terminated and digital broadcasting is fully implemented.

In order to view a wide screen image having a ratio of 32: 9 or 48: 9 in a current digital broadcasting receiver, it is possible to view only a small image after a resizing process.

Meanwhile, a wide screen image having a 32: 9 or 48: 9 ratio may be viewed through a multi-screen system including a plurality of display devices.

1 is a diagram schematically illustrating a general multi-screen system.

A general multi-screen system includes a plurality of display devices 10 and a control PC 20 for controlling them. The control PC 20 receives a wide screen image such as a 32: 9 or 48: 9 ratio image, processes the received wide screen image using a separate software, and displays each display device device 10 via HDMI. To transmit the processed image. However, even when watching a wide screen image of 32: 9 or 48: 9 ratio through such a multi-screen system, a separate control PC 20 and software are required.

An object of the present invention is to provide a method and apparatus for processing and transmitting a broadcast signal for a panoramic video service.

Another object of the present invention is to provide a method and apparatus for receiving and processing a broadcast signal for a panoramic video service.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

A broadcast signal processing method according to an embodiment of the present invention describes encoding of a video stream for a panoramic video service, and describes aspect ratio of panoramic information or first information for explaining that the type of the stream is a video stream for the panoramic video service. Generating service information including at least one of the second information, and transmitting a broadcast signal including the encoded video stream and the generated service information.

A broadcast signal processing method according to an embodiment of the present invention comprises the steps of: receiving a broadcast signal, demultiplexing a video stream for a panoramic video service and service information for the video stream from the received broadcast signal; Parsing the service information to obtain at least one of the first information describing the type of the stream is a video stream for a panoramic video service or the second information describing the aspect ratio of the panoramic video; and the first information or the first information. Decoding the video stream based on at least one of the two pieces of information.

An apparatus for processing broadcast signals according to an embodiment of the present invention includes a receiver for receiving a broadcast signal, a demultiplexer for demultiplexing a video stream for a panoramic video service and service information for the video stream from the received broadcast signal; And a service information processor for parsing the service information to obtain at least one of first information for describing that a type of the stream is a video stream for a panoramic video service or second information for describing an aspect ratio of the panoramic video; And a decoder for decoding the video stream based on at least one of the information or the second information.

According to an embodiment of the present invention, a method and apparatus for processing and transmitting a broadcast signal for a panoramic video service may be provided.

In addition, according to an embodiment of the present invention can provide a method and apparatus for receiving and processing a broadcast signal for a panoramic video service.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

1 is a diagram schematically illustrating a general multi-screen system.

2 is a diagram illustrating a multi-screen system including a plurality of digital broadcast receivers according to an embodiment of the present invention.

FIG. 3 is a diagram illustrating an embodiment of a syntax structure of a program map table (PMT) section. FIG. Each field is described as follows.

4 illustrates a syntax structure of a panorama program information descriptor according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating an embodiment of a value assigned to a panorama service type field in the descriptor of FIG. 4 and the meaning of the value.

FIG. 6 illustrates a syntax structure of a panorama video information descriptor according to an embodiment of the present invention.

FIG. 7 is a diagram illustrating an embodiment of a value assigned to a panoramic base view field in the descriptor of FIG. 6 and the meaning of the value.

FIG. 8 is a diagram illustrating an embodiment of a value assigned to a panoramic view flag in the descriptor of FIG. 6 and the meaning of the value.

FIG. 9 illustrates an embodiment of a syntax structure of a virtual channel table (VCT) section. FIG.

FIG. 10 illustrates a syntax structure of a component list descriptor according to an embodiment of the present invention.

FIG. 11 is a diagram illustrating an embodiment of a syntax structure of a stream_info_details field included in the component list descriptor of FIG. 10.

12 illustrates an embodiment of a syntax structure of an event information table (EIT) section. Each field is described as follows.

13 is a block diagram illustrating configuration modules of a digital broadcast receiver according to an embodiment of the present invention.

FIG. 14 is a block diagram illustrating in detail the control unit of the digital broadcast receiver shown in FIG. 13.

FIG. 15 is a diagram schematically illustrating an appearance of a remote controller capable of controlling the digital broadcast receiver 100 according to an embodiment of the present invention.

FIG. 16 is a detailed block diagram illustrating configuration modules of the remote controller illustrated in FIG. 15.

FIG. 17 illustrates a multi-screen system including a digital broadcast receiver according to an embodiment of the present invention.

18 is a diagram illustrating a multi-screen system including a digital broadcast receiver according to another embodiment of the present invention.

19 is a diagram illustrating a multi-screen system including a digital broadcast receiver according to an embodiment of the present invention.

20A to 20C illustrate a multi-screen system including a digital broadcast receiver according to another embodiment of the present invention.

21A and 21B illustrate a multi-screen system including a digital broadcast receiver according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and the contents described in the accompanying drawings, but the present invention is not limited or limited to the embodiments.

The terminology used herein is a general term that is widely used at present, while considering functions in the present invention, but may be changed depending on the intention of the person skilled in the art, conventions, or the emergence of new technologies. In addition, in certain cases, there is a term arbitrarily selected by the applicant, in which case the meaning will be described in the detailed description of the invention. Therefore, it is to be understood that the terminology used herein is to be interpreted based on the true meaning of the term and the contents throughout the specification, rather than simply on the name of the term.

The digital broadcast receiver of the present specification is a digital television receiver, a receiver set including a set top box capable of processing a broadcast signal for a panoramic service, and a display device for outputting the processed broadcast signal, a video wall, a signage ( signage), a personal digital assistant (PDA), a mobile phone, a smart phone, and the like may include meaning.

According to the present invention, a plurality of digital broadcast receivers that process and output a broadcast signal for a panoramic video service may be referred to as a multiscreen system. The screens of the display units of the plurality of digital broadcast receivers belonging to the multi-screen system are combined to form one large image.

In the present specification, a panoramic video is an image in which the aspect ratio is greater than the aspect ratio in the aspect ratio, and the aspect ratio in which the aspect ratio is larger than 16: 9 (for example, 32: 9). Or 48: 9). In this specification, it is assumed that an image having an aspect ratio of 16: 9 is not panoramic video.

2 is a diagram illustrating a multi-screen system including a plurality of digital broadcast receivers according to an embodiment of the present invention.

The multi-screen system 1000 includes a plurality of digital broadcast receivers 100. For example, the display unit 150 of the digital broadcast receiver 100 may have an aspect ratio of 16: 9 (horizontal: vertical).

Each digital broadcast receiver 100 is configured to receive and process a broadcast signal for a panoramic video service according to an embodiment of the present invention. However, in some cases, some of the plurality of digital broadcast receivers 100 included in the multi-screen system 1000 may not include a configuration module for receiving a broadcast signal for a panoramic video service.

The multi-screen system 1000 according to an embodiment of the present invention does not require a separate control PC or software for processing panoramic video, and can watch the panoramic video as it is without resizing.

Referring to FIG. 2A, a panoramic video having an aspect ratio of 32: 9 can be watched without resizing through the multi-screen system 1000 including two digital broadcast receivers 100.

Referring to FIG. 2B, a multi-screen system 1000 including three digital broadcast receivers 100 may watch a panoramic video having an aspect ratio of 48: 9 without resizing.

Hereinafter, a method of processing a broadcast signal for a panorama service will be described in detail with reference to each drawing.

According to an embodiment of the present invention, information for processing a panoramic video is included in service information and transmitted. The service information may be referred to as service information or signaling information. The service information includes, for example, channel information, program information, event information, and the like.

According to an embodiment of the present invention, the service information may be signaled through a table of MPEG-2 based Program Specific Information / Program and System Information Protocol (PSI / PSIP). However, the present invention is not limited thereto, and the present invention may be applied to a protocol for transmitting service information in a table format regardless of its name.

The PSI may include a Program Map Table (PMT), a Program Association Table (PAT), a Conditional Access Table (CAT), a Network Information Table (NIT), and the like, as an embodiment.

The PAT is special information transmitted by a packet having a PID (Packet Identifier) of '0' and transmits PID information of a corresponding PMT and PID information of a NIT for each program. The PMT transmits the program identification number, PID information of a transport stream packet to which individual bit streams such as video and audio constituting the program are transmitted, and PID information to which PCR is transmitted. The CAT transmits information on a pay broadcast service used by the broadcast transmission system. The NIT transmits information of an actual transmission network. For example, by parsing a PAT having a PID of 0, a program number and a PID of a PMT are obtained. When the PMT obtained from the PAT is parsed, information about correlation between components constituting the program is obtained.

The PSIP is, in one embodiment, a virtual channel table (VCT), a system time table (STT), a rating region table (RTT), an extended text table (ETT), a direct channel change table (DCCT), and a direct channel change (DCCSCT). A selection code table, an event information table (EIT), a master guide table (MGT), and the like.

The VCT transmits information about a virtual channel, for example, channel information for channel selection and PID for receiving audio and / or video. That is, by parsing the VCT, the PID of the audio video of the broadcast program carried in the channel together with the channel name and the channel number can be obtained. The STT transmits current date and time information, and the RRT transmits information about a region and a review institution for a program grade. The ETT transmits an additional description of a channel and a broadcast program, and the EIT transmits information on an event of a virtual channel. The DCCT / DDCSCT transmits information related to automatic channel change, and the MGT transmits version and PID information of each table in the PSIP.

FIG. 3 is a diagram illustrating an embodiment of a syntax structure of a program map table (PMT) section. FIG. Each field is described as follows.

The table_id field is composed of 8-bit fields, and TS_program_map_section is always set to a value of 0x02.

The section_syntax_indicator field consists of 1 bit and is set to 1.

The section_length field consists of 12 bits and the first two bits are 00. The remaining 10 bits indicate the number of bytes of the section starting after the section_length field and the length from this field to the CRC. The value of this field does not exceed 1021.

The program_number field consists of 16 bits. This indicates to which program the program_map_PID is applicable. One program definition is transmitted by only one TS_program_map_section. This implies that the program definition cannot exceed 1016. program_number may be used to specify a broadcast channel, for example. Other program elements belonging to a program may be described to construct a continuous set of streams using program_number from data from other sources (eg, sequential events).

The version_number field is a version number of TS_program_map_section. The version number is increased by one (modulo 32) when a change in the information carried within the section occurs. The version number refers to the definition of one program, so it refers to one section. If current_next_indicator is set to 1, version_number may be currently applicable to TS_program_map_section. If current_next_indicator is set to 0, version_number may be applicable to TS_program_map_section next.

When the current_next_indicator field is set to 1, it indicates that TS_program_map_section to be sent is currently applicable. If the above bit is set to 0, the transmitted TS_program_map_section is not currently applicable and indicates that the next TS_program_map_section is valid.

The value of the section_number field will be 0x00.

The value of the last_section_number field will be 0x00.

The PCR_PID field is a 13-bit field and indicates a PID of transport stream packets that may include a PCR field valid for a program specified by program_number. If there is no PCR associated with the program definition for the private stream, this field will have a value of 0x1FFF.

The program_info_length field is a 12-bit field and the first two bits may be set to '00'. The remaining 10 bits specify the byte number of the descriptors along the program_info_length field.

The stream_type field is an 8-bit field and identifies a type of program element carried by packets having a PID having a value specified by elementary_PID. A reserved value that is not allocated to the stream_type field may be allocated as a value indicating that the type of the corresponding stream is a video stream for a panoramic video service.

The elementary_PID field is a 13-bit field that specifies the PID of transport stream packets associated with the program element.

The ES_info_length field is a 12-bit field, and the first two bits will be 00. The remaining 10 bits specify the byte number of descriptors of the associated program element along the ES_info_length field.

The CRC_32 field is a 32-bit field and contains a CRC value that gives a zero output of a register in the decoder.

4 illustrates a syntax structure of a panorama program information descriptor according to an embodiment of the present invention. According to an embodiment, the panorama program information descriptor may be included and signaled in a for loop following a program_info_length field in the PMT of FIG. 3.

The panoramic program information descriptor provides information on whether the corresponding program is a panoramic video service. Each field is described as follows.

The descriptor_tag field is a descriptor identifier composed of 8 bits, and an identifier for identifying panorama_program_info_descriptor () may be set.

The descriptor_lengh field consists of 8 bits and indicates the length of the descriptor of the part after the descriptor_lengh field in bytes.

The panorama_service_type field consists of 3 bits and can distinguish whether or not the corresponding program is a panoramic video service and the type of service.

FIG. 5 is a diagram illustrating an embodiment of a value assigned to a panorama service type field in the descriptor of FIG. 4 and the meaning of the value.

For example, as a value of the panorama_service_type field, 001 is defined as indicating a general video service having an aspect ratio of 16: 9, 010 is defined as indicating a panoramic video service having an aspect ratio of 32: 9, and 011 is defined as a value. It may be defined as indicating a panoramic video service having an aspect ratio of 48: 9.

FIG. 6 illustrates a syntax structure of a panorama video information descriptor according to an embodiment of the present invention. According to an embodiment, the panoramic video information descriptor may be located in a for loop that follows the "ES_info_length" field in the PMT of FIG. 3.

The panoramic video information descriptor provides information about each elementary stream (ES) corresponding to a left view, a center view, or a right view. Each field is described as follows.

Since the descriptor_tag field and the descriptor_lengh field are the same as or similar to those described with reference to FIG. 4, description thereof is omitted.

The base_video_flag is composed of 1 bit, and is a flag for describing whether the corresponding ES is a base video stream in a device that does not support the panoramic video service. The base_video_flag is set to 1 for the base video stream and 0 for the base video stream.

The panorama_base_view consists of 3 bits, and when base_video_flag is 1, it indicates that the base video stream is any one of a left view, a center view, or a light view.

The panorama_view_flag is composed of 3 bits. If the base_video_flag is 0, this indicates that the ES is one of a left view, a center view, or a light view.

FIG. 7 is a diagram illustrating an embodiment of a value assigned to a panoramic base view field in the descriptor of FIG. 6 and the meaning of the value.

For example, as a value of the panorama_base_view field, 001 may define that the base video stream is a left view, 010 may define that the base video stream is a center view, and 011 may define that the base video stream is a light view.

FIG. 8 is a diagram illustrating an embodiment of a value assigned to a panoramic view flag in the descriptor of FIG. 6 and the meaning of the value.

For example, as a value of the panorama_view_flag field, 001 may define that the ES is a left view, 010 may define that the ES is a light view, and 011 may define that the ES is a center view.

FIG. 9 illustrates an embodiment of a syntax structure of a virtual channel table (VCT) section. FIG. 9 will be described using a Terrestrial Virtual Channel Table (TVCT) as an example. Each field is described as follows.

The value of the table_id field indicates the type of the table section. The value must be 0xC8 to indicate TVCT.

The section_syntax_indicator field consists of 1 bit and its value is set to 1.

The private_indicator field is set to 1.

The section_length field consists of 12 bits and the first two bits are 00. This field indicates the number of bytes in the section, and indicates the length from this field to the CRC. The value of this field does not exceed 1021.

The transport_stream_id field is composed of 16 bits and is an MPEG-2 transport stream (TS) ID as shown in a program association table (PAT) identified by a PID. This field can be distinguished from TVCT broadcasted by other PTC.

The version_number field represents the version of the virtual channel. Whenever there is a change in the current VCT (current_next_indicator = '1'), it is incremented by 1. When the version value reaches 31, the next version value is zero. The version number of the next VCT (current_next_indicator = '0') will be one unit higher than that of the current VCT. The value of this field must be the same value as the same field value of MGT.

The current_next_indicator field consists of 1 bit and the value is set to 1 when the VCT is currently applicable. If it is set to 0, this means that it is not applicable yet and the following table is valid. The standard does not include a requirement that the following tables (those with current_next_indicator set to 0) always be sent. The updated applicable table will be signaled by increasing the value of the version_number field.

The section_number field represents the number of sections. The value of the first section of TVCT is 0x00 and the value is increased by 1 for every additional section.

The last_section_number field means the number of the last section. That is, it means the number of the section having the highest section_number in the entire TVCT.

The protocol_version field functions to allow different table types from those defined in the current protocol in the future. In the current protocol, only 0 is a valid value. Nonzero values will be used in later versions for structurally different tables.

The num_channels_in_section field represents the number of virtual channels in the VCT section. The value is limited by the section length.

The short_name field represents the name of the virtual channel.

The major_channel_number field consists of 10 bits and represents the major channel number of the virtual channel defined in the corresponding sequence in the for loop. Each virtual channel consists of a major channel number and a minor channel number. The major channel number, along with the minor channel number, acts as a reference number to the user for the virtual channel. The major channel number has a value from 1 to 99, and the major / minor channel number pair does not have a duplicate value in the TVCT.

The minor_channel_number field consists of 10 bits and has a value from 0 to 999. The minor channel number acts as a two-part channel number along with the major channel number. When the service type is ATSC_digital_television or ATSC_audio_only, the minor channel number has a value from 1 to 99. Major / minor channel number pairs do not have duplicate values in TVCT. In other types of services, such as data broadcasting, the valid minor virtual channel number may be between 1 and 999.

The modulation_mode field indicates the modulation mode of the transport carrier associated with the virtual channel.

The value of the carrier_frequency field is zero. It is allowed to identify the carrier frequency using this field, but vice versa.

The channel_TSID field has a value from 0x0000 to 0xFFFF and is an MPEG-2 TSID associated with a TS for delivering the MPEG-2 program referred to by this virtual channel. For an invalid channel, the channel_TSID field may indicate an ID of a transport stream for transmitting the service when the service is enabled. The receiver is expected to use the channel_TSID field to identify whether the received transport stream is the desired multiplex. For the analog channel (service_type 0x01), the channel_TSID field indicates the value of the analog TSID included in the VBI of the NTSC signal.

The program_number field associates the virtual channel defined in TVCT with the MPEG-2 PROGRAM ASSOCIATION and TS PROGRAM MAP tables. For a virtual channel representing an analog service, a value of 0xFFFF will be identified for the program_number field.

The ETM_location field indicates the existence and location of an extended text message (ETM).

The access_controlled field is a 1-bit Boolean flag. When the access_controlled field is 1, it may represent that an event related to a corresponding virtual channel is accessed. 0 indicates that access is not restricted.

The hidden field is a 1-bit Boolean flag. If it is 1, access is not allowed even if the number is directly input by the user. The hidden virtual channel is skipped when the user surfs the channel and, if accessed by a direct channel entry, appears to be undefined. Typical applications for the hidden channel are test signals and NVOD services. Whether a hidden channel and its events appear in the EPG depends on the state of the hide_guide field.

The hide_guide field is a Boolean flag. When the hide_guide field is set to 0 for a hidden channel, the virtual channel and an event may be displayed on the EPG display. This field is ignored if the hidden bit is not set. Thus, non-hidden channels and their events belong to the EPG display regardless of the state of the hide_guide bit. Typical applications for hidden channels with hide_guide set to 1 are services accessible via test signals and application-level pointers.

The service_type field identifies the type of service delivered by the virtual channel. A reserved value that is not allocated in the service_type field may be allocated as a value indicating that the service type delivered by the corresponding virtual channel is a panoramic video service.

The source_id field identifies a programming source related to the virtual channel. Here, the source may be any one of video, text, data, or audio programming. The source id 0 is a reserved value and has a unique value in the TS carrying the VCT from 0x0001 to 0x0FFF. Also, from 0x1000 to 0xFFFF, it is unique at the local level.

The descriptors_length field represents the length of a following descriptor for a corresponding virtual channel in bytes.

Descriptor () may not be included in descriptor () or one or more descriptors may be included. In the present embodiment, at least one of the above descriptors may be included in the descriptor (), and for example, service_location_descriptor (), panorama_program_info_descriptor (), and component_list_descriptor () may be included. service_location_descriptor () defines the stream type, PID, and language code for each ES. panorama_program_info_descriptor () is as described above with reference to FIGS. 4 and 5 and will not be described again. component_list_descriptor () will be described later with reference to FIG. 10.

The additional_descriptors_length field represents the total length of the following VCT descriptor list in bytes.

The CRC_32 field indicates a CRC value that allows a zero output of a register in the decoder.

FIG. 10 illustrates a syntax structure of a component list descriptor according to an embodiment of the present invention.

The component list descriptor includes a stream_info_details () field for each ES to signal the panoramic video service. Each field is described as follows.

The descriptor_tag field is a descriptor identifier composed of 8 bits, and an identifier for identifying component_list_descriptor () may be set.

The descriptor_lengh field consists of 8 bits and indicates the length of the descriptor of the part after the descriptor_lengh field in bytes.

The alternate field is a flag consisting of 1 bit. If the flag is set to 1, the alternate field indicates that the instance of the component list descriptor is "second." Indicates that the set is "primary" or "preferred".

The component_count field consists of 7 bits and specifies the number of components specified in the following for loop. The value of the component_count field should be in the range of 1 to 36.

The stream_type field consists of 8 bits and indicates the stream type related to the component described in the iteration of the for loop.

The format_identifier field corresponds to the format_identifier field included in the MPEG-2 registration descriptor defined in ISO / IEC 13818-1 [7] Section 2.6.9, and identifies an entity that provides a stream_type value.

The length_of_details field consists of 8 bits and indicates the defined length of the following stream_info_details field in bytes.

The stream_info_details field provides additional information related to the component identified by the value of the preceding stream_type field. In the present invention, the stream_info_details field provides information about each elementary stream (ES) corresponding to a left view, a center view, or a right view.

FIG. 11 is a diagram illustrating an embodiment of a syntax structure of a stream_info_details field included in the component list descriptor of FIG. 10. Description of each field is the same as described above with reference to FIGS. 6 to 8, and thus description thereof is omitted.

12 illustrates an embodiment of a syntax structure of an event information table (EIT) section. Each field is described as follows.

The table_id field may indicate that this table section is an EIT section by a predefined value. The section_syntax_indicator field may be set to "1".

The section_length field starts immediately and may describe the number of bytes of the section including the next section_length field and the CRC. The section_length field does not exceed 4093, and the entire section has a maximum length of 4096 bytes.

The service_id field may be provided as a label to identify the service from another service in the TS. service_id may be the same as program_number in the corresponding program_map_section.

The version_number field is a version number of sub_table. The version_number may increase by one when a change of information transmitted in the sub_table occurs. When its value reaches 31, it wraps around to zero. If current_next_indicator is set to 1, then version_number indicates that it is applicable to the current sub_table, and if current_next_indicator is 0, it is applicable to the next sub_table.

The section_number field may give a number of a section. The section_number of the first section in the sub_table can be 0x00. section_number will be incremented by 1 with each additional section with the same table_id, service_id, transport_stream_id, and original_network_id. In this case, the sub_table may be structured as the number of segments. The section_number in each segment is incremented by 1 with each additional section. In numbering, a gap is allowed between the last section of the segment and the first section of the adjacent segment.

The last_section_number field describes the number of the last section of the sub_table (ie, the section with the highest section_number) as part of this section.

The transport_stream_id field may provide as a label for identification of a TS for EIT firms from another multiplex in the delivery system.

The original_network_id field may give a label that identifies the network_id of the original delivery system.

The segment_last_section_number field may describe the number of the last section of this segment of the sub_table. For non-segmented sub_tables, this field may be set to the same value as the last_section_number field.

The last_table_id field may identify the last table_id used. The event_id field may include an identification number of the described event (uniquely assigned in the service definition).

The start_time field may include a start time of an event in UTC (Universal Time, Co-ordinated) and MJD (Modified Julian Date). This field is coded with 16 bits giving 16 LSBs of MJD followed by 24 bits coded as 6 digits in 4-bit Binary Coded Decimal (BCD). If start_time is not defined (eg, for an event in the NVOD reference service), all bits of the field may be set to one. For example, 93/10/13 12:45:00 is coded "0xC079124500". The Duration field contains the duration of the event in hours, minutes, and seconds. The format is 6 digits, 4-bit BCD, i.e. 24 bits. For example, 01:45:30 is coded as "0x014530".

The running_status field may indicate the status of an event. For the NVOD reference event, the value of running_status may be set to zero. free_CA_mode is a 1-bit field. If set to 0, all component streams of the event are not scrambled. If set to 1, one or more streams are controlled by the CA system.

The descriptors_loop_length field may give the total length in bytes of the following descriptors.

The CRC_32 field may include a CRC value that gives zero output of registers at the decoder after processing the entire private section.

At least one of the above descriptors may be included in the for loop following the discriptors_loop_length field and signaled.

According to an embodiment of the present invention, the present invention may be applied to a DVB (Digital Video Broadcasting) system, which is a European broadcasting standard.

Service information of the DVB system includes a network information table (NIT), a bouquet association table (BAT), a service description table (SDT), and an event information table. EIT, Time and Date Table (TDT), Time Offset Table (TOT), Running Status Table (RST) and / or Stuffing Table (ST) It may include.

According to an embodiment of the present invention, the service information may be included in any of the tables included in the service information of the above-described DVB system. Which table of the above-described DVB service information may include the service information according to an embodiment of the present invention may be determined by increasing the processing efficiency of the system as a priority.

The NIT carries information relating to the physical structure of the multiplex / transport streams transmitted over a given network and the characteristics of the network itself.

BAT provides information related to bouquets. A bouquet is a collection of services that traverse the boundaries of the network.

Each subtable of the SDT describes the services contained within a particular transport stream. The services can be part of an actual transport stream or part of another transport stream, which can be identified by table_id.

The EIT provides information about the events included in each service in chronological order.

The TDT carries UTC time and date information.

TOT transmits UTC time, date time and local time offset.

The RST contains information that enables fast and accurate updating of the timing state of one or more events. This is necessary when an early or late start of an event occurs due to a schedule change. The use of each table makes it possible to obtain a fast updating mechanism.

According to an embodiment, when the digital broadcast receiver 100 is an Internet Protocol Television (IPTV), the above-described service information may be defined as a descriptor of a service level or a program / event level in a table defined by the IPTV.

13 is a block diagram illustrating configuration modules of a digital broadcast receiver according to an embodiment of the present invention. However, FIG. 13 is an example for convenience of description, and in addition to the configuration modules shown in FIG. 13, another configuration module is added or some configuration modules are omitted.

The digital broadcast receiver 100 of FIG. 13 refers to the digital broadcast receiver 100 included in the multi-screen system 1000.

Referring to FIG. 13, the digital broadcast receiver 100 includes a receiver 110, an external device interface unit 120, a memory 130, a controller 140, a display unit 150, an audio output unit 160, and a power supply. It includes a supply unit 170, a user interface unit 180 and the like.

The receiver 110 may include a tuner 111, a demodulator 112, and a network interface 113. In some cases, a plurality of tuners 111 may be provided.

The tuner 111 may receive, for example, an RF broadcast signal of a single carrier according to an Advanced Television System Committee (ATSC) scheme or an RF broadcast signal of multiple carriers according to a digital video broadcasting (DVB) scheme.

The demodulator 112 receives the digital IF signal DIF converted by the tuner 111 and performs a demodulation operation.

For example, when the digital IF signal output from the tuner 111 is an ATSC scheme, the demodulator 112 performs 8-VSB (8-Vestigal Side Band) demodulation, for example. In addition, the demodulator 112 may perform channel decoding.

The network interface unit 113 provides an interface for connecting the digital broadcast receiver 100 to a wired / wireless network including an internet network. The network interface unit 113 may include, for example, an Ethernet terminal for connection with a wired network, and for example, for connection with a wireless network, for example, a wireless LAN (WLAN) (Wi-). Fi, Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) communication standards, and the like can be used.

The network interface unit 113 may transmit or receive data with another user or another electronic device through a connected network or another network linked to the connected network.

The external device interface unit 120 is an interface that enables data communication between the external device and the digital broadcast receiver 100. The external device interface unit 120 may be connected to an external device such as a digital versatile disk (DVD), a Blu-ray, a game device, a camera, a camcorder, a computer (laptop), an STB, or the like by wire / wireless. The external device interface unit 120 transmits an image, audio, or data signal input from the outside to the controller 140 through a connected external device. In addition, the video, audio or data signal processed by the controller 140 may be output to an external device. According to an exemplary embodiment, the digital broadcast receiver 100 may be connected to another digital broadcast receiver 100 included in the multi-screen system 1000 through the external device interface unit 120.

The external device interface unit 120 may include, for example, a USB terminal, a Composite Video Banking Sync (CVBS) terminal, a component terminal, an S-video terminal (analog), a digital visual interface (DVI) terminal, and a high definition multimedia interface. ) Terminals, RGB terminals, and D-SUB terminals.

The memory 130 may store a program for processing and controlling each signal in the controller 140, or may store a signal processed video, audio, or data signal. In addition, the memory 130 may perform a function for temporarily storing an image, audio, or data signal input from the external device interface unit 120 or the network interface unit 113. In addition, the memory 130 stores various OS, middleware, and platforms, for example.

The user interface unit 180 transmits a signal input by a user to the controller 140 or transmits a signal from the controller 140 to an external device (eg, the remote controller 200). For example, the user interface unit 180 may power on / off, channel selection, screen setting, etc. from the remote controller 200 according to various communication methods such as a radio frequency (RF) communication method and an infrared (IR) communication method. It may be designed to receive and process the control signal of the control unit, or to transmit the control signal from the control unit 140 to the remote controller 200.

The controller 140 controls each component module in the digital broadcast receiver 100.

The controller 140 demultiplexes the input stream or processes the demultiplexed signals through the tuner 111, the demodulator 112, the network interface 113, or the external device interface 120. A signal for video or audio output can be generated and output. The controller 140 will be described later in more detail with reference to FIG. 14.

The display unit 150 converts an image signal, a data signal, an OSD signal processed by the controller 140, or an image signal, data signal, etc. received from the external device interface unit 120 into R, G, and B signals, respectively. Generate a drive signal. The display unit 150 may be a PDP, an LCD, an OLED, a flexible display, a 3D display, or the like.

The audio output unit 160 receives a signal processed by the controller 140, for example, a stereo signal, a 3.1 channel signal, or a 5.1 channel signal, and outputs a voice signal. The audio output unit 160 may be implemented as various types of speakers.

The power supply unit 170 supplies the corresponding power throughout the digital broadcast receiver 100. In particular, power may be supplied to the controller 140, which may be implemented in the form of a system on chip (SOC), the display unit 150 for displaying an image, and the audio output unit 160 for audio output. have.

FIG. 14 is a block diagram illustrating in detail the control unit of the digital broadcast receiver shown in FIG. 13.

The control unit 140 of the digital broadcast receiver 100 includes a demultiplexer 141, an image processor 142, a service information processor 143, a GUI generator 144, a mixer 145, and a frame rate converter 146. ), The formatter 147, and the like. In addition, it is also within the scope of the present invention to design to further include a voice processor (not shown), a data processor (not shown).

The demultiplexer 141 demultiplexes the input stream. For example, when an MPEG-2 TS is input, it may be demultiplexed and separated into video, audio, and data signals, respectively.

The service information processor 143 processes the service information input from the demultiplexer 141 and outputs the service information to the image processor 142. The service information processing unit 143 may include a database for temporarily storing the service information to be processed, either internally or externally.

The image processor 142 may perform image processing of the demultiplexed image signal. To this end, the image processor 142 may include an image decoder 142a and a scaler 142b. The video decoder 142a decodes the demultiplexed video signal, and the scaler 142b performs scaling so that the resolution of the decoded video signal can be output from the video output unit. The video signal decoded by the video processor 142 is input to the mixer 145.

The GUI generator 144 generates a GUI signal according to a user input or itself. Therefore, the mixer 145 may mix the GUI signal generated by the GUI generator 144 and the decoded video signal processed by the image processor 142. The GUI generator 144 includes an OSD generator that generates an OSD (On Screen Display) signal including environment setting information of the digital broadcast receiver 100.

The mixed signal is provided to the formatter 147. Since the decoded broadcast image signal or the external input signal and the GUI signal or the OSD signal are mixed, the GUI or OSD may be overlaid on the broadcast image or the external input image.

The frame rate converter (FRC) 146 may convert the frame rate of the input video. For example, a 60Hz frame rate is converted to 120Hz or 240Hz. When converting a frame rate of 60 Hz to 120 Hz, it is possible to insert the same first frame or insert a third frame predicted from the first frame and the second frame between the first frame and the second frame. When converting a frame rate of 60 Hz to 240 Hz, it is possible to insert three more identical frames or three predicted frames. Meanwhile, it is also possible to maintain the input frame rate without additional conversion.

The formatter 147 receives the output signal of the frame rate converter 146 and changes the format of the signal so as to be suitable for the video output unit. For example, the R, G, and B data signals may be output, and the R, G, and B data signals may be output as low voltage differential signaling (LVDS) or mini-LVDS.

The configuration modules of the digital broadcast receiver 100 will be described below with reference to the embodiments of the present invention.

The receiver 110 receives a broadcast signal (MPEG-2 Transport Stream) for the panoramic video service.

The demultiplexer 141 demultiplexes the video stream for the panoramic video service from the received broadcast signal and outputs the decoded video stream to the image processor 142, and demultiplexes the service information for the video stream from the received broadcast signal. The service information processing unit 143 outputs the result. The service information includes PSI, PSIP or DVB-SI.

The service information processing unit 143 parses a PAT having a PID of 0 from the service information (PSI) to obtain a PID of the PMT. The service information processing unit 143 parses the PMT using the PID of the PMT obtained from the PAT, and analyzes the information obtained by parsing the PMT. The service information processing unit 143, from the information obtained by parsing the PMT, checks whether the value of the stream_type field is an allocated value for the panoramic video service, checks the presence or absence of the panorama program information descriptor, and the corresponding program executes Find out if it is. In addition, the service information processing unit 143 further confirms whether each ES corresponds to a left view, a center view, or a right view from the panoramic video information descriptor obtained by parsing the PMT. The service information processor 143 outputs the processing result of the service information to the image processor 142.

In addition, the service information processing unit 143 analyzes the information obtained by parsing the VCT from the service information (PSIP). The service information processing unit 143 checks whether the value of the service_type field is assigned for the panorama video service from the information obtained by parsing the VCT, and checks the presence or absence of the panorama program information descriptor so that the corresponding virtual channel can determine the panorama image service. Find out if it is. The service information processing unit 143 uses the service location descriptor obtained by parsing the VCT to grasp the PID value of each ES for the left view, the center view, and the right view. The service information processing unit 143 further checks whether each ES corresponds to a left view, a center view, or a right view from the stream_info_details field in the component list descriptor obtained by parsing the VCT. The service information processor 143 outputs the processing result of the service information to the image processor 142. According to an embodiment, the service information processor 143 may obtain service information for the panoramic video service by parsing the SDT of the DVB-SI instead of the VCT of the PSIP.

In addition, the service information processing unit 143 may obtain service information for the panoramic video service by parsing an EIT from the service information (PSIP or DVB-SI).

The image decoder 142a in the image processor 142 decodes the demultiplexed video stream based on the service information processed by the service information processor 143. When the digital broadcast receiver 100 is set as a left screen in the multi-screen system 1000, the image decoder 142a may decode only an ES corresponding to the left view based on the service information. On the other hand, when the digital broadcast receiver 100 is set as the center screen in the multi-screen system 1000, the image decoder 142a may decode only an ES corresponding to the center view based on the service information. Similarly, when the digital broadcast receiver 100 is set to a light screen in the multi-screen system 1000, the image decoder 142a may decode only an ES corresponding to the light view based on the service information.

The user command for setting the digital broadcast receiver 100 as a left screen, a center screen, or a light screen is received through the user interface unit 180. The controller 140 may set the digital broadcast receiver 100 to one of a left screen, a center screen, or a light screen according to the received user command.

When the digital broadcast receiver 100 is set as a left screen in the multi-screen system 1000, the display unit 150 outputs only the ES corresponding to the decoded left view. On the other hand, when the digital broadcast receiver 100 is set as the center screen in the multi-screen system 1000, the display unit 150 outputs only the ES corresponding to the decoded center view. Similarly, when the digital broadcast receiver 100 is set to a light screen in the multi-screen system 1000, the display unit 150 outputs only the ES corresponding to the decoded light view.

According to an embodiment, the external device interface unit 120 may transmit an ES corresponding to at least one of a left view, a center view, or a right view to another digital broadcast receiver 100 in the multi-screen system 1000. . For convenience of description, the digital broadcast receiver 100 may be referred to as a first digital broadcast receiver 100, and the other digital broadcast receiver 100 in the multi-screen system 1000 may be referred to as a second digital broadcast receiver 100. For example, the ES transmitted to the second digital broadcast receiver 100 through the external device interface unit 120 may not include the ES decoded by the image decoder 142a. The external device interface unit 120 of the first digital broadcast receiver 100 transmits the service information to the second digital broadcast receiver 100 together.

For example, when the first digital broadcast receiver 100 is set as a left screen, the external device interface unit 120 may display an ES corresponding to both the left view, the center view, and the right view. 100 may be transmitted, or an ES corresponding to a center view and a light view except for an ES corresponding to a left view to be decoded may be transmitted to the second digital broadcast receiver 100, and the second digital broadcast receiver 100 may be transmitted to a center. When the first digital broadcast receiver 100 recognizes that the screen is set as a screen, only the ES corresponding to the center view may be transmitted to the second digital broadcast receiver 100.

FIG. 15 is a diagram schematically illustrating an appearance of a remote controller capable of controlling the digital broadcast receiver 100 according to an embodiment of the present invention.

First, referring to FIG. 15A, an indicator I corresponding to the remote controller 300 is displayed on the screen of the multimedia device 100.

The user may move or rotate the remote controller 200 up and down, left and right (FIG. 15B) and front and rear (FIG. 15C). The indicator I displayed on the screen of the digital broadcast receiver 100 corresponds to the movement of the remote controller 200. The remote controller 200 may be referred to as a spatial remote controller because the indicator I is moved and displayed according to the movement in the 3D space as shown in the figure.

FIG. 15B illustrates that when the user moves the remote controller 200 to the left side, the indicator I displayed on the screen of the digital broadcast receiver 100 also moves to the left side correspondingly.

Information about the movement of the remote controller 200 detected through the sensor of the remote controller 200 is transmitted to the digital broadcast receiver 100. The digital broadcast receiver 100 may calculate the coordinates of the indicator I from the information about the movement of the remote controller 200. The digital broadcast receiver 100 may display the indicator I to correspond to the calculated coordinates.

FIG. 15C illustrates a case in which the user moves the remote controller 200 away from the digital broadcast receiver 100 while pressing a specific button in the remote controller 200. As a result, the selected area in the screen corresponding to the indicator I can be zoomed in and enlarged. On the contrary, when the user moves the remote controller 200 to approach the digital broadcast receiver 100, the selection area in the screen corresponding to the indicator I may be zoomed out and displayed in a reduced size. On the other hand, when the remote controller 200 moves away from the digital broadcast receiver 100, the selection area may be zoomed out, and when the remote controller 200 approaches the digital broadcast receiver 100, the selection area may be zoomed in.

FIG. 16 is a detailed block diagram illustrating configuration modules of the remote controller illustrated in FIG. 15.

As shown in FIG. 16, the remote controller 200 includes a wireless communication unit 214, a user input unit 215, a sensor unit 217, an output unit 216, a power supply unit 211, and a storage unit 212. And the controller 213.

The wireless communication unit 214 is designed to be able to communicate with any external device.

The remote controller 200 may include an RF module 214a capable of transmitting and receiving signals with the digital broadcast receiver 100 according to the RF communication standard. In addition, the remote controller 200 may include an IR module 214b capable of transmitting and receiving a signal with the digital broadcast receiver 100 according to the IR communication standard.

The remote controller 200 transmits a signal containing information on the movement of the remote controller 200 to the digital broadcast receiver 100 through the RF module 214a.

In addition, the remote controller 200 may receive a signal transmitted from the digital broadcast receiver 100 through the RF module 214b. In addition, the remote controller 200 may transmit a control signal regarding power on / off, channel change, volume change, etc. to the digital broadcast receiver 100 through the IR module 214b as necessary.

The user input unit 215 may be configured as a keypad, a button, a touch pad, or a touch screen.

The sensor unit 217 may include a gyro sensor 217a or an acceleration sensor 217b. The gyro sensor 217a may sense information about the movement of the remote controller 200. For example, the gyro sensor 217a may sense information about the operation of the remote controller 200 based on the x, y, and z axes. The acceleration sensor 217b may sense information regarding a moving speed of the remote controller 200. Meanwhile, a distance measuring sensor may be further provided, whereby the distance with the digital broadcast receiver 100 may be sensed.

The output unit 216 may output a video or audio signal corresponding to the manipulation of the user input unit 215 or corresponding to the signal transmitted from the digital broadcast receiver 100. For example, the output unit 216 is an LED module 216a that is turned on when the user input unit 215 is manipulated or a signal is transmitted and received with the digital broadcast receiver 100 through the wireless communication unit 214, and a vibration module for generating vibration ( 216b), a sound output module 216c for outputting sound, or a display module 216d for outputting an image.

The power supply unit 211 supplies power to each component of the remote controller 200. The power supply unit 211 may reduce power waste by stopping power supply when the remote controller 200 does not move for a predetermined time.

The storage unit 212 may store various types of programs, application data, and the like necessary for controlling or operating the remote controller 200. The controller 213 controls various items related to the control of the remote controller 200. For example, the controller 213 may output a signal corresponding to a predetermined key operation of the user input unit 215 or a signal corresponding to the movement of the remote controller 200 sensed by the sensor unit 217. Through the digital broadcast receiver 100 can be transmitted.

FIG. 17 illustrates a multi-screen system including a digital broadcast receiver according to an embodiment of the present invention.

The multi-screen system 1000 includes a plurality of digital broadcast receivers 100.

Each of the plurality of digital broadcast receivers 100 receives a broadcast signal for a panoramic video service through the tuner 111 or the network interface unit 113 in the receiver 110. For example, when the digital broadcast receiver 100 receives a broadcast signal for a panoramic video service through the network interface unit 113, the network interface unit 113 may receive an IP packet including an MPEG-2 TS. have.

Referring to FIG. 17A, the multi-screen system 1000 includes a first digital broadcast receiver 100a and a second digital broadcast receiver 100b. For example, the display unit 150 of each of the first and second digital broadcast receivers 100a and 100b has an aspect ratio of 16: 9 (width: vertical) and each of the first and second digital broadcast receivers 100a and 100b. It is assumed that the receiver 110 of a receives a broadcast signal including a panoramic video stream having an aspect ratio of 32: 9.

The first digital broadcast receiver 100a may be set as a left screen and the second digital broadcast receiver 100b may be set as a light screen.

The video decoder 142a of the first digital broadcast receiver 100a decodes only the ES corresponding to the left view based on the service information input from the service information processor 143. The display unit 150 of the first digital broadcast receiver 100a outputs the decoded ES.

The video decoder 142a of the second digital broadcast receiver 100b decodes only the ES corresponding to the right view based on the service information input from the service information processing unit 143. In addition, the display unit 150 of the second digital broadcast receiver 100b outputs the decoded ES.

Meanwhile, referring to FIG. 17B, the multi-screen system 1000 includes a first digital broadcast receiver 100a, a second digital broadcast receiver 100b, and a third digital broadcast receiver 100c. For example, the display unit 150 of each of the first, second, and third digital broadcast receivers 100a, 100b, and 100c has a 16: 9 aspect ratio and the first, second, and third digital broadcast receivers. It is assumed that each receiver 110 (100a, 100b, 100c) receives a broadcast signal including a panoramic video stream having an aspect ratio of 48: 9.

The first digital broadcast receiver 100a is set as a left screen, the second digital broadcast receiver 100b is set as a center screen, and the third digital broadcast receiver 100c is set as a light screen.

The video decoder 142a of the first digital broadcast receiver 100a decodes only the ES corresponding to the left view based on the service information input from the service information processor 143. The display unit 150 of the first digital broadcast receiver 100a outputs the decoded ES.

The video decoder 142a of the second digital broadcast receiver 100b decodes only the ES corresponding to the center view based on the service information input from the service information processing unit 143. In addition, the display unit 150 of the second digital broadcast receiver 100b outputs the decoded ES.

The video decoder 142a of the third digital broadcast receiver 100c decodes only the ES corresponding to the right view based on the service information input from the service information processing unit 143. The display unit 150 of the third digital broadcast receiver 100c outputs the decoded ES.

18 is a diagram illustrating a multi-screen system including a digital broadcast receiver according to another embodiment of the present invention.

The multi-screen system 100 includes a plurality of digital broadcast receivers 100.

At least one of the plurality of digital broadcast receivers 100 receives a broadcast signal for a panoramic video service through the tuner 111 or the network interface unit 113 in the receiver 110. For example, when the digital broadcast receiver 100 receives a broadcast signal for a panoramic video service through the network interface unit 113, the network interface unit 113 may receive an IP packet including an MPEG-2 TS. have.

In FIG. 18, it is assumed that only one digital broadcast receiver 100 receives a broadcast signal for a panoramic video service through the receiver 110.

Referring to FIG. 18A, the multi-screen system 1000 includes a first digital broadcast receiver 100a and a second digital broadcast receiver 100b. The first digital broadcast receiver 100a may be referred to as a main device, and the second digital broadcast receiver 100b may be referred to as a sub device.

The first digital broadcast receiver 100a receives a broadcast signal for the panoramic video service through the receiver 110. The second digital broadcast receiver 100b does not receive a broadcast signal for the panoramic video service through the receiver 110. In some cases, the second digital broadcast receiver 100b may not include the receiver 110.

The second digital broadcast receiver 100b may be connected to the first digital broadcast receiver 100a by wire / wireless through the external device interface unit 120.

For example, the display unit 150 of each of the first and second digital broadcast receivers 100a and 100b has an aspect ratio of 16: 9 (horizontal: vertical) and the receiver 110 of the first digital broadcast receiver 100a. Suppose that a broadcast signal comprising a panoramic video stream having an aspect ratio of 32: 9 is assumed.

The first digital broadcast receiver 100a may be set as a left screen and the second digital broadcast receiver 100b may be set as a light screen.

The video decoder 142a of the first digital broadcast receiver 100a decodes only the ES corresponding to the left view based on the service information input from the service information processor 143. The display unit 150 of the first digital broadcast receiver 100a outputs the decoded ES.

The external device interface unit 120 of the first digital broadcast receiver 100a may transmit the ES corresponding to the right view to the second digital broadcast receiver 100b. According to an embodiment, the external device interface unit 120 of the first digital broadcast receiver 100a may transmit a broadcast signal for the panoramic video service received by the receiver 110 to the second digital broadcast receiver 110b. In addition, the panoramic video stream may be transmitted to the second digital broadcast receiver 100b or the ES corresponding to the right view may be transmitted to the second digital broadcast receiver 100b except for the ES corresponding to the decoded left view. The external device interface unit 120 of the first digital broadcast receiver 100a may also transmit the service information to the second digital broadcast receiver 100b.

The external device interface unit 120 of the second digital broadcast receiver 100b receives the ES corresponding to the service information and the right view from the first digital broadcast receiver 100a. According to an exemplary embodiment, the external device interface unit 120 of the second digital broadcast receiver 100b may receive a broadcast signal for a panoramic video service, may receive a panoramic video stream, and correspond to an left view. Except may also receive the ES corresponding to the light view.

The image decoder 142a of the second digital broadcast receiver 100b decodes the ES corresponding to the right view based on the service information, and the display unit 150 outputs the decoded ES.

Meanwhile, referring to FIG. 18B, the multi-screen system 1000 includes a first digital broadcast receiver 100a, a second digital broadcast receiver 100b, and a third digital broadcast receiver 100c. The first digital broadcast receiver 100a may be referred to as a main device, the second digital broadcast receiver 100b may be referred to as a first subdevice, and the third digital broadcast receiver 100c may be referred to as a second subdevice.

The first digital broadcast receiver 100a receives a broadcast signal for the panoramic video service through the receiver 110. The second digital broadcast receiver 100b and the third digital broadcast receiver 100c do not receive a broadcast signal for the panoramic video service through the receiver 110. In some cases, the second digital broadcast receiver 100b and the third digital broadcast receiver 100c may not include the receiver 110.

The second digital broadcast receiver 100b may be connected to the first digital broadcast receiver 100a by wire / wireless through the external device interface unit 120. In addition, the third digital broadcast receiver 100c may be connected to the second digital broadcast receiver 100b through a wired / wireless connection through the external device interface unit 120. The third digital broadcast receiver 100c may also be connected to the first digital broadcast receiver 100a through the external device interface unit 120. For example, FIG. 18 illustrates that the first, second, and third digital broadcast receivers 100a, 100b, and 100c are connected in a daisy chain form.

For example, the display unit 150 of each of the first, second, and third digital broadcast receivers 100a, 100b, and 100c has a 16: 9 (horizontal: vertical) aspect ratio of the first digital broadcast receiver 100a. It is assumed that the receiver 110 receives a broadcast signal including a panoramic video stream having an aspect ratio of 48: 9.

The first digital broadcast receiver 100a may be set as a left screen, the second digital broadcast receiver 100b may be set as a center screen, and the third digital broadcast receiver 100c may be set as a light screen.

The video decoder 142a of the first digital broadcast receiver 100a decodes only the ES corresponding to the left view based on the service information input from the service information processor 143. The display unit 150 of the first digital broadcast receiver 100a outputs the decoded ES.

The external device interface unit 120 of the first digital broadcast receiver 100a may transmit an ES corresponding to the center view and the right view to the second digital broadcast receiver 100b. According to an embodiment, the external device interface unit 120 of the first digital broadcast receiver 100a may transmit a broadcast signal for the panoramic video service received by the receiver 110 to the second digital broadcast receiver 110b. In addition, the panoramic video stream may be transmitted to the second digital broadcast receiver 100b or the ES corresponding to the center view and the light view may be transmitted to the digital broadcast receiver 100b except for the ES corresponding to the decoded left view. . The external device interface unit 120 of the first digital broadcast receiver 100a may also transmit the service information to the second digital broadcast receiver 100b.

The external device interface unit 120 of the second digital broadcast receiver 100b receives the service information, the ES corresponding to the center view and the right view, from the first digital broadcast receiver 100a. According to an exemplary embodiment, the external device interface unit 120 of the second digital broadcast receiver 100b may receive a broadcast signal for a panoramic video service, may receive a panoramic video stream, and correspond to an left view. Except for receiving the ES corresponding to the center view and the light view.

The image decoder 142a of the second digital broadcast receiver 100b decodes only the ES corresponding to the center view based on the service information, and the display unit 150 outputs the decoded ES.

The external device interface unit 120 of the second digital broadcast receiver 100b may transmit the ES corresponding to the right view to the third digital broadcast receiver 100c. According to an embodiment, the external device interface unit 120 of the second digital broadcast receiver 100b may transmit a broadcast signal for the panoramic video service received from the first digital broadcast receiver 100a to the third digital broadcast receiver 100c. The panoramic video stream received from the first digital broadcast receiver 100a may be transmitted to the third digital broadcast receiver 100c, and may be transmitted to the center view and the light view received from the first digital broadcast receiver 100a. The ES may be transmitted to the third digital broadcast receiver 100c, or the ES corresponding to the right view may be transmitted to the third digital broadcast receiver 100c except for the ES corresponding to the decoded center view. The external device interface unit 120 of the second digital broadcast receiver 100b may also transmit the service information to the third digital broadcast receiver 100c.

The external device interface unit 120 of the third digital broadcast receiver 100c receives the ES corresponding to the service information and the right view from the second digital broadcast receiver 100b. According to an embodiment, the external device interface unit 120 of the third digital broadcast receiver 100c may receive a broadcast signal for a panoramic service, may receive a panoramic video stream, and correspond to a center view and a light view. The ES may be received, or the ES corresponding to the light view may be received except for the ES corresponding to the center view.

The image decoder 142a of the third digital broadcast receiver 100c decodes only the ES corresponding to the right view based on the service information, and the display unit 150 outputs the decoded ES.

Hereinafter, a method of setting the digital broadcast receiver 100 as a left screen, a center screen, or a light screen using the remote controller 200 will be described with reference to FIGS. 19 to 21.

19 is a diagram illustrating a multi-screen system including a digital broadcast receiver according to an embodiment of the present invention.

The multi-screen system 1000 includes a first digital broadcast receiver 100a, a second digital broadcast receiver 100b, and a third digital broadcast receiver 100c. Each of the first, second, and third digital broadcast receivers 100a, 100b, and 100c receives a broadcast signal for a panoramic video service through the receiver 110.

The first digital broadcast receiver 100a may be set as a left screen, the second digital broadcast receiver 100b may be set as a center screen, and the third digital broadcast receiver 100c may be set as a light screen. Settings to the left screen, the center screen and the light screen may be made separately in each of the digital broadcast receivers 100.

First, a user selects a specific key from a key button provided on the remote controller 200 toward the first digital broadcast receiver 100a or the display unit of the first digital broadcast receiver 100a using the remote controller 200. When the menu button displayed on 150 is selected, the first GUI 310 for setting an environment may be displayed.

The first digital broadcast receiver 100a may receive a user command from the remote controller 200 through the user interface unit 180.

When the user selects the panorama item 311 in the first GUI 310 using the remote controller 200, the second GUI 320 may be displayed as a sub menu. The user may set the first digital broadcast receiver 100a as a left screen through the screen setting item 321 in the second GUI 320.

Similarly, the user may set the second digital broadcast receiver 100b as a center screen by inputting a user command with the remote controller 200 facing the second digital broadcast receiver 100b. In addition, the user may set the third digital broadcast receiver 100c as a light screen by inputting a user command with the remote controller 200 facing the third digital broadcast receiver 100c.

20A to 20C illustrate a multi-screen system including a digital broadcast receiver according to another embodiment of the present invention.

The multi-screen system 1000 includes a first digital broadcast receiver 100a, a second digital broadcast receiver 100b, and a third digital broadcast receiver 100c. The first digital broadcast receiver 100a may be referred to as a main device, the second digital broadcast receiver 100b may be referred to as a first subdevice, and the third digital broadcast receiver 100c may be referred to as a second subdevice.

The first digital broadcast receiver 100a receives a broadcast signal for the panoramic video service through the receiver 110. The second digital broadcast receiver 100b and the third digital broadcast receiver 100c do not receive a broadcast signal for the panoramic video service through the receiver 110. In some cases, the second digital broadcast receiver 100b and the third digital broadcast receiver 100c may not include the receiver 110.

Referring to FIG. 20A, the second digital broadcast receiver 100b is connected to the first digital broadcast receiver 100a via the external device interface 120 in a wired / wireless manner, and the third digital broadcast receiver 100c is externally connected. The device may be connected to the second digital broadcast receiver 100b through a wire / wireless unit through the device interface unit 120. In some cases, the third digital broadcast receiver 100c may be connected to the first digital broadcast receiver 100a through a wired / wireless connection through the external device interface unit 120.

The first digital broadcast receiver 100a may be set as a left screen, the second digital broadcast receiver 100b may be set as a center screen, and the third digital broadcast receiver 100c may be set as a light screen. Since the second digital broadcast receiver 100b and the third digital broadcast receiver 100c are recognized as external devices of the first digital broadcast receiver 100a, the user may use the second and third digital broadcast receivers through the first digital broadcast receiver 100a. The broadcast receivers 100b and 100c may be controlled.

The user selects a specific key from a key button provided on the remote controller 200 toward the first digital broadcast receiver 100a or the display unit 150 of the first digital broadcast receiver 100a using the remote controller 200. When the menu button displayed at) is selected, the first GUI 310 for environment setting may be displayed.

When the user selects the panorama item 311 in the first GUI 310 using the remote controller 200, the second GUI 320 may be displayed as a sub menu.

The second GUI 320 may include a screen setting item 321, an external device detection item 322, and a confirmation item 323.

The user may select whether to set the first digital broadcast receiver 100a as a left screen, a center screen, or a light screen through the screen setting item 321.

The user may check the number of sub devices connected to the first digital broadcast receiver 100a through the external device detection item 322. For example, even when the third digital broadcast receiver 100c is connected to only the second digital broadcast receiver 100b and receives a control signal of the first digital broadcast receiver 100a via the second digital broadcast receiver 100b. The third digital broadcast receiver 100c may be recognized as a sub device connected to the first digital broadcast receiver 100a.

When the user selects the left screen from the screen setting item 321 and selects the confirmation item 323, the first digital broadcast receiver 100a is set as the left screen, and the second digital broadcast receiver 100b and the third digital are selected. The broadcast receiver 100c is automatically set to a center screen and a light screen, respectively.

According to an embodiment, when the user selects the left screen from the screen setting item 321 so that the user can recognize the screen setting state, the left screen is instructed to the display unit 150 of the first digital broadcasting receiver 100a. Screen guide OSD 330 is displayed, and the screen guide OSD 330 indicating a center screen is displayed on the display unit 150 of the second digital broadcast receiver 100b, and the third digital broadcast receiver 100c is a light screen. A screen guide OSD 330 may be displayed indicating.

 Referring to FIG. 20B, unlike the case of FIG. 20A, the first digital broadcast receiver 100a is set to a light screen, and the second digital broadcast receiver 100b and the third digital broadcast receiver 100c are respectively a center screen and a left. It is automatically set to the screen.

According to an embodiment, when the user selects the light screen from the screen setting item 321 so that the user can recognize the screen setting state, the display unit 150 of the first digital broadcast receiver 100a is instructed to indicate the light screen. Screen guide OSD 330 is displayed, and the screen guide OSD 330 indicating a center screen is displayed on the display unit 150 of the second digital broadcast receiver 100b, and the third digital broadcast receiver 100c is the left screen. A screen guide OSD 330 may be displayed indicating.

Referring to FIG. 20C, the second digital broadcast receiver 100b is connected to the first digital broadcast receiver 100a via a wired / wireless connection via the external device interface unit 120, and the third digital broadcast receiver 100c is externally connected. The device may be connected to the first digital broadcast receiver 100a through a wire / wireless connection through the device interface unit 120.

The first digital broadcast receiver 100a is set as a center screen, and the second digital broadcast receiver 100b and the third digital broadcast receiver 100c are automatically set as left screens and light screens, respectively.

According to an embodiment, when the user selects the center screen in the screen setting item 321 so that the user can recognize the screen setting state, the center screen is instructed to the display unit 150 of the first digital broadcasting receiver 100a. Screen guide OSD 330 is displayed, and the screen guide OSD 330 indicating a left screen is displayed on the display unit 150 of the second digital broadcast receiver 100b, and the third digital broadcast receiver 100c is a light screen. A screen guide OSD 330 may be displayed indicating.

21A and 21B illustrate a multi-screen system including a digital broadcast receiver according to another embodiment of the present invention.

The multi-screen system 1000 includes a first digital broadcast receiver 100a, a second digital broadcast receiver 100b, and a third digital broadcast receiver 100c. The first digital broadcast receiver 100a may be referred to as a main device, the second digital broadcast receiver 100b may be referred to as a first subdevice, and the third digital broadcast receiver 100c may be referred to as a second subdevice.

The first digital broadcast receiver 100a receives a broadcast signal for the panoramic video service through the receiver 110. The second digital broadcast receiver 100b and the third digital broadcast receiver 100c do not receive a broadcast signal for the panoramic video service through the receiver 110. In some cases, the second digital broadcast receiver 100b and the third digital broadcast receiver 100c may not include the receiver 110.

The second digital broadcast receiver 100b is connected to the first digital broadcast receiver 100a via a wired / wireless connection via the external device interface unit 120, and the third digital broadcast receiver 100c is connected to the external device interface unit 120. It may be connected to the first digital broadcast receiver 100a via a wired / wireless connection.

The user selects a specific key from a key button provided on the remote controller 200 toward the first digital broadcast receiver 100a or the display unit 150 of the first digital broadcast receiver 100a using the remote controller 200. When the menu button displayed at) is selected, the first GUI 310 for environment setting may be displayed.

When the user selects the panorama item 311 in the first GUI 310 using the remote controller 200, the second GUI 320 may be displayed as a sub menu.

The user may select to set the first digital broadcast receiver 100a as a center screen through the screen setting item 321.

According to an embodiment, when the user selects the center screen in the screen setting item 321 so that the user can recognize the screen setting state, the center screen is instructed to the display unit 150 of the first digital broadcasting receiver 100a. Screen guide OSD 330 is displayed, and the screen guide OSD 330 indicating a left screen is displayed on the display unit 150 of the second digital broadcast receiver 100b, and the third digital broadcast receiver 100c is a light screen. A screen guide OSD 330 may be displayed indicating.

As shown in FIG. 21A, when a center screen is selected in the screen setting item 321, a swap item 324 in the second GUI 320 may be activated. As shown in FIG. 21B, when the user selects the swap item 324, the screen setting states of the second digital broadcast receiver 100b and the third digital broadcast receiver 100c may be interchanged. If the user selects the swap item 324 in the second GUI 320 while the second digital broadcast receiver 100b is automatically set to the left screen and the third digital broadcast receiver 100c is automatically set to the light screen, 2 The digital broadcast receiver 100b may be changed to a light screen and the third digital broadcast receiver 100c may be changed to a left screen.

For convenience of description, the drawings are divided and described, but the embodiments described in each drawing may be merged to implement a new embodiment. And according to the needs of those skilled in the art, it is also within the scope of the present invention to design a computer-readable recording medium having a program recorded thereon for executing the embodiments described above.

The multimedia device and its operation method according to the present invention are not limited to the configuration and method of the embodiments described as described above, but the embodiments may be modified in whole or in part to enable various modifications. It may alternatively be configured in combination.

On the other hand, the operating method of the multimedia device of the present invention can be implemented as a processor-readable code on a processor-readable recording medium provided in the display device. The processor-readable recording medium includes all kinds of recording devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet. . The processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.

While the above has been shown and described with respect to preferred embodiments of the invention, the invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or the prospect of the present invention.

In addition, in this specification, both the object invention and the method invention are described, and description of both invention can be complementarily applied as needed.

The present invention relates to a method and apparatus for processing a broadcast signal for a panoramic video service, which has industrial applicability.

Claims (20)

In the method for processing a broadcast signal for a panoramic video service, Encoding a video stream for the panoramic video service; Generating service information including at least one of first information describing that the type of the stream is a video stream for a panoramic video service or second information describing an aspect ratio of the panoramic video; And And transmitting a broadcast signal including the encoded video stream and the generated service information. The method of claim 1, At least one of the first information or the second information is included in the Program Map Table (PMT) and signaled. The method of claim 1, The second information explains that the aspect ratio of the panoramic video is 32: 9 or 48: 9. The method of claim 2, And wherein the second information is defined as a program level descriptor in the PMT. The method of claim 1, The service information may include third information describing whether the video stream is a base video stream in a device that does not support the panoramic video service, a left view of the base video stream based on the third information, and a center. If the video stream is not a base video stream based on the fourth information and the third information indicating that the view is one of a center view or a right view, the video stream is a left view or a center view. Or fifth information indicating that the view is one of the light views. The method of claim 5, The third information to the fifth information is included in at least one of a program map table (PMT), a virtual channel table (VCT), or an event information table (EIT), and is signaled. The method of claim 5, And the third information to the fifth information are defined as descriptors of an elementary stream (ES) level in a program map table (PMT). In the method for processing a broadcast signal for a panoramic video service, Receiving a broadcast signal; Demultiplexing a video stream for a panoramic video service and service information for the video stream from the received broadcast signal; Parsing the service information to obtain at least one of first information describing the type of the stream is a video stream for a panoramic video service or second information describing an aspect ratio of the panoramic video; And Decoding the video stream based on at least one of the first information and the second information. The method of claim 8, At least one of the first information or the second information is obtained by parsing a program map table (PMT) included in the service information. The method of claim 8, The second information explains that the aspect ratio of the panoramic video is 32: 9 or 48: 9. The method of claim 8, Third information describing whether the video stream is a base video stream in a device that does not support the panorama video service by parsing the service information, and the base video stream is left view based on the third information; If the video stream is not a base video stream based on the fourth information and the third information indicating that the view is one of a center view or a right view, the video stream is a left view; And obtaining fifth information indicating that the view is one of a center view or a light view. The method of claim 11, The third information to the fifth information is obtained by parsing at least one of a Program Map Table (PMT), a Virtual Channel Table (VCT), or an Event Information Table (EIT). The method of claim 11, The third information to the fifth information is obtained by parsing a descriptor of an elementary stream (ES) level in a program map table (PMT). The method of claim 11, Decoding the video stream, And decoding only an elementary stream (ES) corresponding to any one of a left view, a center view, or a right view based on the service information. The method of claim 14, And outputting only the ES corresponding to any one of the left view, the center view, or the right view. The method of claim 14, Transmitting an ES corresponding to at least one view of a left view, a center view, or a right view to an external device based on the service information. The method of claim 16, The ES transmitted to the external device does not include the decoded ES. In the broadcast signal processing apparatus for receiving and processing a broadcast signal for a panoramic video service, Receiving unit for receiving a broadcast signal; A demultiplexer for demultiplexing a video stream for a panoramic video service and service information for the video stream from the received broadcast signal; A service information processing unit for parsing the service information to obtain at least one of first information for explaining that a type of the stream is a video stream for a panoramic video service or second information for describing an aspect ratio of the panoramic video; And And a decoder for decoding the video stream based on at least one of the first information and the second information. The method of claim 18, At least one of the first information or the second information is obtained by parsing a program map table (PMT) included in the service information. The method of claim 18, The service information processing unit parses the service information to determine whether the video stream is a base video stream in a device that does not support the panoramic video service, and the base video stream is left based on the third information. Based on the fourth information and the third information indicating that the view is one of a left view, a center view, or a right view, the corresponding video when the video stream is not a base video stream. And further obtain fifth information indicating that the stream is one of a left view, a center view, or a light view.

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