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WO2007032383A1 - Appareil et procede de reproduction de contenu - Google Patents

Appareil et procede de reproduction de contenu Download PDF

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Publication number
WO2007032383A1
WO2007032383A1 PCT/JP2006/318147 JP2006318147W WO2007032383A1 WO 2007032383 A1 WO2007032383 A1 WO 2007032383A1 JP 2006318147 W JP2006318147 W JP 2006318147W WO 2007032383 A1 WO2007032383 A1 WO 2007032383A1
Authority
WO
WIPO (PCT)
Prior art keywords
receiving
content
packet
playback
reproduction
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2006/318147
Other languages
English (en)
Japanese (ja)
Inventor
Hiroaki Kimura
Shingo Izawa
Takaaki Ishida
Kotaro Kataoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KDDI Corp
Keio University
Original Assignee
KDDI Corp
Keio University
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
Application filed by KDDI Corp, Keio University filed Critical KDDI Corp
Priority to JP2007535505A priority Critical patent/JP5172343B2/ja
Publication of WO2007032383A1 publication Critical patent/WO2007032383A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
    • 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
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
    • 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
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • 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
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/64—Addressing
    • H04N21/6405—Multicasting

Definitions

  • the present invention relates to a content playback apparatus that plays back received content, and more particularly to a content playback apparatus and content playback method that receive and play back content corresponding to the capabilities of a playback device.
  • content is received via a communication network such as the Internet or a broadcast network.
  • contents such as television and radio programs can be received by a mobile terminal device such as a mobile phone (for example, see Patent Document 1 below).
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-78830
  • the content transmission side also transmits the content in conformity with the playback capability of the terminal device, for example, the content to be transmitted to the mobile phone is initially set to a low playback rate or resolution. It was done simply in the whole system. Therefore, even if a large monitor device can be connected to a mobile phone, it only enlarges the screen displayed on the mobile phone. I could't do it.
  • An object of the present invention is to provide a content playback apparatus and a content playback method capable of receiving and playing back content according to the playback force of a playback device in order to eliminate the above-described problems caused by the prior art. .
  • the content reproduction apparatus is directed to a set IP address among IP packets IP multicasted via a broadcast network.
  • Receiving means for selectively receiving the IP packet multicasted to the receiver, reproducing means for reproducing the content from the IP packet received by the receiving means, and selecting an IP packet of the content corresponding to the reproduction capability of the reproducing means
  • setting means for setting an IP address for receiving in the receiving means.
  • the content playback apparatus is the content playback apparatus according to claim 1, wherein the playback means includes an internal playback means built in the apparatus and a predetermined communication interface. And external reproduction means externally connected to the apparatus, and the setting means selectively receives IP packets of contents corresponding to the reproduction capabilities of the internal reproduction means and the external reproduction means, respectively.
  • the IP address is set in the receiving means.
  • the receiving means converts the IP packet to which an IP header is added into a predetermined transmission packet.
  • Transmission packet receiving means for receiving the encapsulated transmission packet from the broadcasting network, and IP packet extracting means for releasing the encapsulation of the transmission packet received by the transmission packet receiving means and extracting the IP packet IP multicast correspondence information receiving means for receiving information related to IP multicast correspondence in which an IP multicast group address for each IP packet and a condition for receiving the IP packet are set, and the setting means include the IP The recommendation included in the information related to the IP multicast correspondence received by the multicast correspondence information receiving means. That the information of the reproduction capabilities of the reproduction means, wherein by comparing the information of the reproduction capabilities of the reproduction means, and sets the IP multicast group address suitable based on the comparison result.
  • the content reproduction method according to the invention of claim 4 selectively selects IP packets multicasted to a set IP address among IP packets multicasted via a broadcast network.
  • a receiving step for receiving the content a playback step for playing back the IP packet received in the receiving step as content, and a content IP packet corresponding to the playback capability of the playback means for playing back in the playback step.
  • FIG. 1 is a block diagram showing a content reproduction apparatus that is useful in an embodiment of the present invention.
  • FIG. 2 is a chart showing an example of multicast correspondence information.
  • FIG. 3 is a flowchart showing the content processing content on the content transmission side.
  • FIG. 4 is a flowchart showing the content reception processing content on the receiving side.
  • FIG. 5 is a flowchart showing the content reproduction processing content on the receiving side.
  • FIG. 1 is a block diagram showing a content playback apparatus that is useful for an embodiment of the present invention.
  • the illustrated receiver terminal 100 reproduces the received broadcast wave using the reproduction unit 105 or the external reproduction device 150. During playback using the external playback device 150, the received content is transferred to the external playback device 150 for playback.
  • the receiver terminal 100 includes a receiving unit 101, a communication IZF 102, a transmission / reception iZF switching control unit 103, a playback device information unit 104, a playback unit 105, an operation unit 106, and a channel selection unit 10
  • the receiving unit 101 receives a broadcast wave such as digital broadcast transmitted from the transmission side, and outputs it to the transmission / reception IZF switching control unit 103.
  • the transmission side power also receives multicast correspondence information to be sent to an arbitrary receiving node and outputs it to the transmission / reception IZF switching control unit 103.
  • content to be transmitted as a broadcast program is transmitted as a plurality of different contents on the same broadcast wave. Even if the content is the same, it is possible to use different playback rates depending on the playback capability of the playback device that plays the broadcast wave, or to divide the content according to the playback capability, such as the camera angle cut method. It is done. In this way, a plurality of contents with different contents, compression ratios, and technical conditions are transmitted for each reproduction capability of different possible reproduction devices.
  • the playback capability of the playback device is determined based on the size of the playback device and the number of pixels. Therefore, information for selecting content corresponding to the playback capability of the playback device is set in the multicast support information transmitted together with the broadcast wave from the transmission side (details will be described later).
  • Communication IZF 102 is an IZF for transferring broadcast waves to external playback device 150, and is an IZF such as a WLAN, for example.
  • the transmission / reception IZF switching control unit 103 switches whether the broadcast wave content received by the reception unit 101 is reproduced by the receiver terminal 100 or transferred to the external reproduction device 150 via the communication IZF 102.
  • the playback device information unit 104 information for each broadcast content playback device is set in advance via the operation unit 106 and the like.
  • information related to the playback unit 105 provided on the receiver terminal 100 side and the external playback device 150 is set. Settings include manufacturer name, model, screen size, number of pixels, and network address.
  • the reproduction unit 105 reproduces broadcast waves, and is a video display unit and an audio output unit built in the receiver terminal 100.
  • the display unit is a small display unit having a smaller number of pixels than the external playback device 150, for example.
  • the operation unit 106 is provided to input information about a broadcast wave playback device and to perform an operation of selecting a playback device when a broadcast wave is received.
  • Channel selection section 107 selects content (corresponding to a channel) corresponding to a playback device from among a plurality of contents included in a broadcast wave (details will be described later).
  • the playback device is selected based on the multicast support information received by the receiving unit 101 and the playback capability of the playback device set in the playback device information unit 104. Select the playback device you want to play.
  • the channel selection unit 107 determines which content is suitable for the playback device and gives an instruction so that the content can be received. Specifically, the receiver unit 100 of the receiver terminal 100 is instructed to assign a multicast address group. Also, a playback instruction is given to the external playback device 150. Specifically, it instructs the transmission / reception IZF switching control unit 103 to route traffic to the external playback device 150.
  • the external playback device 150 includes a communication IZF 151 such as a WLAN, and plays back broadcast wave content transferred from the receiver terminal 100.
  • the external playback device 150 is a large television having a larger number of pixels than the playback unit 105 provided in the receiver terminal 100, for example.
  • the content is transmitted from the transmission side via a digital broadcasting network.
  • a transmission packet of a predetermined format used for the broadcast wave of this digital broadcast is transmitted with the IP packet encapsulated inside the transmission packet.
  • the transmission packet includes a plurality of programs (contents) for different playback devices for this single receiver terminal 100 by IP multicast.
  • the receiving unit 101 of the receiver terminal 100 releases the encapsulation of the transmission packet transmitted from the broadcast network, and extracts the IP packet.
  • the extracted IP packet address is compared with the multicast group address set in the receiving unit 101. If they match, the extracted IP packet is received.
  • the receiving unit 101 is capable of receiving a plurality of programs (contents). By performing the setting, the content IP packet according to the playback capability of the playback device (playback unit 105 or external playback device 150) built in the receiver terminal 100 or externally connected is selectively received.
  • the multicast correspondence information transmitted by the transmission side is periodically transmitted to an arbitrary receiver terminal 100 via the broadcast network as the most important address control information.
  • any receiver terminal 100 among the plurality of receiver terminals 100 capable of receiving broadcast waves receives this multicast-compatible information.
  • FIG. 2 is a chart showing an example of multicast correspondence information.
  • the multicast correspondence information 200 shown in FIG. 2 is an example in which two IP multicast group addresses A and B are set.
  • the content is a program for a large TV screen
  • the recommended playback device information is the TV screen size (for example, 32 type) and pixel number information (for example, 1024 X 1024).
  • the content is a small, portable screen program
  • the recommended playback device information includes the TV screen size (eg, 2.2 inches) and pixel count information ( For example, 240 X 320).
  • the content is not limited to a broadcast program, but may be a commercial (CM).
  • FIG. 3 is a flowchart showing the content processing content on the content transmission side.
  • content is created for each playback capability of the playback device (step S301).
  • a single content is edited differently for each playback device (playback unit 105 and external playback device 150) on the receiver terminal 100 side.
  • IP multicast group address A “contents for large TV screens”
  • IP multicast group address B “portable screen content” are created.
  • IP multicast group address A there are programs that have been edited on a screen with a wide field of view, including the background, and programs that have a larger screen size (number of pixels) than the original content.
  • IP multicast group address B includes programs that are edited with the display target at the center of the original content, and programs that have a smaller screen size (number of pixels).
  • an IP multicast group address and recommended The IP multicast support information 200 (see Fig. 2) including the playback device information to be created is created (step S302).
  • step S301 the content created in step S301 is transmitted on the broadcast wave (step S303). Also, the IP multicast correspondence information 200 is transmitted to an arbitrary receiving node (step S304). This IP multicast correspondence information 200 is periodically transmitted as the most important address control information, and is received by any receiver terminal 100 that has received a broadcast wave. The above is the processing on the transmission side.
  • FIG. 4 is a flowchart showing the content reception processing content on the reception side.
  • information on a playback device for playing back content is input to the playback device information unit 104 (step S401).
  • the operation unit 106 is operated, and information related to the playback unit 105 and the external playback device 150 is set in advance.
  • Information on the playback device includes the manufacturer name, model, screen size, pixel number information, network address, and the like.
  • the number of external playback devices 150 is not limited to one, and a plurality of external playback devices 150 can be switched and connected, and each of the plurality of external playback devices 150 to be connected may be set.
  • receiving section 101 of receiver terminal 100 on the receiving side receives IP multicast correspondence information 200 sent to an arbitrary receiver terminal 100 (step S402).
  • a reproduction device for reproducing the content is designated (step S403). This designation is performed by operating the operation unit 106. Information on the designated playback device is set in the playback device information section 104. In addition, it can be configured to automatically detect the connection of the external playback device 150. For example, the playback unit 105 is specified when the external playback device 150 is not connected, and the external playback device 150 is specified preferentially as the playback device when the external playback device 150 is connected.
  • the channel selection unit 107 displays the recommended playback device set in the received IP multicast correspondence information 200 (see FIG. 2) and the playback device information set in the playback device information unit 104. Compare (step S404). Specifically, the screen size and the number of pixels are compared with each other. Then, as a result of the comparison, the channel selection unit 107 determines that the receiver unit 101 has an IP multicast that meets (or approximates) the recommended playback device conditions. A toggle address (A or B in FIG. 2) is acquired, and the acquired IP multicast group address is assigned as the IP address of the receiving unit 101 (step S405).
  • the “channel selection” of the channel selection unit 107 refers to selecting contents by IP multicast group address (A or B in FIG. 2)! /.
  • channel selection section 107 selects a playback device (playback section 105 or external playback device 150) that matches the capabilities of the playback device included in IP multicast support information 200 based on this comparison. . Then, the receiving unit 101 receives the content of the IP multicast group address that includes the set IP address (step S406).
  • step S407 it is determined whether or not there is a change in the playback device set in the IP multicast correspondence information 200 received by the receiving unit 101 or the playback device information unit 104 (step S407). If there is no change (step S407: No), the process proceeds to step S408, and the current content is continuously received (step S408). The processing after step S408 will be described with reference to FIG. On the other hand, if there has been a change (step S407: Yes), the process returns to step S404 and again selects contents by channel.
  • FIG. 5 is a flowchart showing the content reproduction processing content on the receiving side.
  • the transmission / reception IZF switching control unit 103 confirms the designation of the playback device in step S403 (step S501). Here, it is confirmed whether or not the playback device is the external playback device 150. If the playback device is the external playback device 150 (step S501: Yes), the IP packet received by the receiving unit 101 is communicated to the communication IZF102 (step S502). . At this time, the transmission / reception IZF switching control unit 103 changes the address of the IP packet received by the reception unit 101 to the IP address of the communication IZF 151.
  • the IP address set in the receiver 101 is the IP multicast group address A shown in FIG. It is an included address.
  • the communication IZF 102 can transfer the IP packet to the communication IZF 151 of the external reproduction device 150 via the WLAN or the like, and the external reproduction device 150 can reproduce the content (step S503).
  • the content of the IP packet transferred to the external playback device 150 is a large TV screen program that conforms to the screen size of the external playback device 150.
  • step S501 when the playback device is specified as playback unit 105 in step S501 (step S501: No), the content is played back by playback unit 105 built in receiver terminal 100 (step S504).
  • the content output to the playback unit 105 is a small portable screen program.
  • the external playback device 150 is not connected to the receiver terminal 100 and the playback device is the playback unit 105, the IP address set in the reception unit 101 is included in the IP multicast group address B shown in FIG. Address.
  • the content transmitted by the transmission side is not limited to transmission via the above-described broadcast network.
  • it may be a wireless communication network such as a mobile phone network or a wireless LAN network, or a wired communication network via the Internet.
  • the receiver terminal 100 is used for the external playback device 150 connected externally. It is possible to receive and play content that requires a high playback capability.
  • the receiver terminal 100 can be configured with a mobile phone, and a user with this mobile phone can view content on a large screen simply by connecting the mobile phone to the external playback device 150. become.
  • the external playback device 150 does not have the function to receive the above content (digital terrestrial broadcasting)
  • the content reproduction method described in the present embodiment can be realized by executing a program prepared in advance on a computer provided in receiver terminal 100.
  • This program is hard disk, flexible disk, CD-ROM, MO, DVD It is recorded on a computer-readable recording medium such as, and executed by being read out by the computer.
  • the program may be a transmission medium that can be distributed through a network such as the Internet.
  • the content playback apparatus and the content playback method according to the present invention are useful for applications in which a large number of receiver terminals simultaneously receive content via a broadcast network, and in particular, satellite digital broadcasting and terrestrial digital broadcasting. It is suitable for terminal devices on the receiving side that receive content via broadcast networks such as the Internet and communication networks such as the Internet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Selon cette invention, une partie de réception (101) reçoit de façon sélective, parmi des paquets IP multidiffusés par l'intermédiaire d'un réseau de diffusion, un paquet IP adressé à une adresse IP établie, une partie de reproduction (105) ou un dispositif de reproduction extérieur (150) reproduit un contenant à partir du paquet IP reçu par la partie de réception (101) et une partie de commande (103) de commutation I/F de transmission/réception établit, pour la partie de réception (101), l'adresse IP utilisée pour recevoir de façon sélective le paquet IP du contenu correspondant à la capacité de reproduction de la partie de reproduction (105) ou du dispositif de reproduction extérieur (150).
PCT/JP2006/318147 2005-09-13 2006-09-13 Appareil et procede de reproduction de contenu Ceased WO2007032383A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007535505A JP5172343B2 (ja) 2005-09-13 2006-09-13 コンテンツ再生装置およびコンテンツ再生方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-265540 2005-09-13
JP2005265540 2005-09-13

Publications (1)

Publication Number Publication Date
WO2007032383A1 true WO2007032383A1 (fr) 2007-03-22

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PCT/JP2006/318147 Ceased WO2007032383A1 (fr) 2005-09-13 2006-09-13 Appareil et procede de reproduction de contenu

Country Status (2)

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JP (1) JP5172343B2 (fr)
WO (1) WO2007032383A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009206574A (ja) * 2008-02-26 2009-09-10 Yamaha Corp 画像配信方法、画像配信サーバ装置、画像配信プログラム
JP2017092671A (ja) * 2015-11-09 2017-05-25 住友電気工業株式会社 放送受信装置、放送受信システム、放送受信方法および放送受信プログラム

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000354237A (ja) * 1999-06-11 2000-12-19 Sony Corp 携帯情報処理装置および情報処理方法
JP2003155544A (ja) * 2001-11-22 2003-05-30 Yamasa Shoyu Co Ltd 調味料用ステンレスタンク

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003152544A (ja) * 2001-11-12 2003-05-23 Sony Corp データ通信システム、データ送信装置、データ受信装置、および方法、並びにコンピュータ・プログラム
JP4295470B2 (ja) * 2002-05-08 2009-07-15 日本放送協会 コンテンツ提供システム、コンテンツ受信装置、コンテンツ提供方法、コンテンツ受信方法、コンテンツ提供プログラムおよびコンテンツ受信プログラム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000354237A (ja) * 1999-06-11 2000-12-19 Sony Corp 携帯情報処理装置および情報処理方法
JP2003155544A (ja) * 2001-11-22 2003-05-30 Yamasa Shoyu Co Ltd 調味料用ステンレスタンク

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009206574A (ja) * 2008-02-26 2009-09-10 Yamaha Corp 画像配信方法、画像配信サーバ装置、画像配信プログラム
JP2017092671A (ja) * 2015-11-09 2017-05-25 住友電気工業株式会社 放送受信装置、放送受信システム、放送受信方法および放送受信プログラム

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JPWO2007032383A1 (ja) 2009-03-19
JP5172343B2 (ja) 2013-03-27

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