WO2013077060A1 - Récepteur, programme et procédé de réception - Google Patents

Récepteur, programme et procédé de réception Download PDF

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Publication number
WO2013077060A1
WO2013077060A1 PCT/JP2012/072941 JP2012072941W WO2013077060A1 WO 2013077060 A1 WO2013077060 A1 WO 2013077060A1 JP 2012072941 W JP2012072941 W JP 2012072941W WO 2013077060 A1 WO2013077060 A1 WO 2013077060A1
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WO
WIPO (PCT)
Prior art keywords
application
unit
content
presentation control
broadcast
Prior art date
Application number
PCT/JP2012/072941
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English (en)
Japanese (ja)
Inventor
寿之 大亦
一博 大槻
恵吾 真島
Original Assignee
日本放送協会
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Application filed by 日本放送協会 filed Critical 日本放送協会
Publication of WO2013077060A1 publication Critical patent/WO2013077060A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—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
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations

Definitions

  • the present invention relates to a receiver, a program, and a reception method that execute an application and generate display information including the application and content included in a broadcast signal.
  • broadcasting / communication cooperation services such as HbbTV (Hybrid Broadcast Broadband TV) in Europe.
  • contents are distributed using different transmission paths for broadcasting and communication, and a display screen of the distributed contents is displayed on a receiver such as a digital television, a personal computer, or a portable terminal. It is considered to display them simultaneously.
  • a widget or gadget
  • the communication content such as text information and video distributed by communication is displayed superimposed on the display screen of the broadcast program that is the content distributed by broadcast. It is assumed that
  • the communication content display screen by displaying the communication content display screen freely over the broadcast program display screen, part or all of the broadcast program display screen is covered by the communication content display screen.
  • the production intention of the program producer such as the composition may not be transmitted to the viewer.
  • highly urgent information important to viewers such as earthquake early warnings may not be transmitted accurately and reliably.
  • control information for determining a content display method is distributed from a facility owned by a business entity that broadcasts content (broadcast program) by communication with the content.
  • the receiver which is a content display apparatus determines the display method of the display screen of a content, and the display screen of an application based on the control information. As a result, a plurality of application screens are displayed without infringing the work of the program.
  • the present invention has been made in view of such circumstances, and is broadcast when emergency content with high urgency or promptness is broadcast during the broadcast of normal content broadcast according to a predetermined schedule. It is possible to control the display of the content display screen and the application display screen according to the urgent content, and the content display screen and the application display screen without distributing control information for each broadcast content.
  • a receiver, a program, and a receiving method capable of controlling the display of a message.
  • a broadcast content acquisition unit that acquires content from a broadcast signal, and placement information indicating the placement of the content and the application to be displayed together with the content represent the stage of the application presentation method.
  • An arrangement information storage unit that is stored in association with a policy level, a presentation control signal acquisition unit that acquires a presentation control signal that controls a presentation method of the application from the broadcast signal, and a presentation control signal that is acquired by the presentation control signal acquisition unit.
  • the arrangement information specifying the arrangement information associated with the policy level indicated by the arrangement information storage unit stored in the arrangement information storage unit, the content acquired by the broadcast content acquisition unit, and the application Generate display information arranged according to the arrangement information specified by the specific unit
  • the arrangement information storage unit includes, as the arrangement information, an arrangement of each element of a markup document that defines an element that refers to the content and an element that refers to the application.
  • the style sheet file shown may be stored.
  • the apparatus includes a determination unit that determines whether an application to be displayed together with the content is an application that is a target of screen presentation control, and the display information generation unit includes the determination unit When it is determined that the application is an application subject to screen presentation control, the application is output as the display information, and the judgment unit determines that the application is not an application subject to screen presentation control.
  • the application arranged according to the arrangement information may be output as the display information.
  • a receiver computer uses a broadcast content acquisition unit that acquires content from a broadcast signal, and a presentation control signal that acquires a presentation control signal that controls an application presentation method from the broadcast signal.
  • An arrangement that specifies arrangement information indicating arrangement of the content and an application to be displayed together with the content, the arrangement information being stored in association with the policy level indicated by the presentation control signal acquired by the acquisition unit and the presentation control signal acquisition unit It is a program for functioning as an information specifying unit, a display information generating unit that generates display information in which the content acquired by the broadcast content acquiring unit and the application are arranged according to the arrangement information specified by the arrangement information specifying unit.
  • content is acquired from a broadcast signal
  • a presentation control signal for controlling an application presentation method is acquired from the broadcast signal, and associated with a policy level indicated by the acquired presentation control signal.
  • Reception information that is stored arrangement information and that indicates arrangement information indicating arrangement of the content and an application to be displayed together with the content, and generates display information in which the acquired content and the application are arranged according to the specified arrangement information Is the method.
  • the display information generation unit generates the display information using the arrangement information corresponding to the policy level among the arrangement information stored in the arrangement information storage unit.
  • FIG. 1 is a schematic block diagram showing a configuration of a receiver 100 according to an embodiment of the present invention.
  • the receiver 100 displays the broadcast content included in the broadcast signal received from the broadcast transmission device and the application received from the application server.
  • the application executed by the receiver 100 is an HTML (HyperText Markup Language) document in which an operation is described by a script such as javascript (registered trademark).
  • the receiver 100 includes a tuner unit 10, a resident unit 20, a browser unit 30, and a display unit 40.
  • the tuner unit 10 is a processing unit that processes broadcast signals, and includes a channel selection unit 11, a broadcast content acquisition unit 12, a presentation control signal acquisition unit 13, and an AIT acquisition unit 14.
  • the channel selection unit 11 selects and receives a broadcast signal D1 of one channel from the broadcast signals transmitted by the broadcast transmission device.
  • the broadcast content acquisition unit 12 acquires broadcast content from the stream included in the broadcast signal D1 received by the channel selection unit 11.
  • the presentation control signal acquisition unit 13 acquires a presentation control signal from the stream included in the broadcast signal D1 received by the channel selection unit 11.
  • the presentation control signal is a signal that controls the application presentation method.
  • the presentation control signal is multiplexed on, for example, a PMT (Program Map Table), an EIT (Event Information Table), an SDT (Service Description Table), and the like.
  • PMT Program Map Table
  • EIT Event Information Table
  • SDT Service Description Table
  • the value of the presentation control signal is associated with the event by interpreting the value of the packet data and recognizing the occurrence of the event.
  • the presentation control signal indicates a policy level indicating the stage of the application presentation method.
  • the AIT acquisition unit 14 acquires an application information table (AIT) included in the broadcast signal D1 received by the channel selection unit 11, and outputs an instruction to the resident unit 20 when an application start instruction or stop instruction is included. .
  • AIT application information table
  • the resident unit 20 is a processing unit that manages applications, and includes an application selection receiving unit 21, an application manager unit 22 (location information storage unit, determination unit), and a WEB server unit 23.
  • the application selection receiving unit 21 receives selection of an application via a remote control by a user operation, and outputs a start instruction or a stop instruction for the application to the application manager unit 22.
  • the application manager unit 22 When the application manager unit 22 receives an application activation instruction from the AIT acquisition unit 14 or the application selection reception unit 21, the application manager unit 22 receives the application D2 from the application server.
  • the application manager unit 22 records the application in the storage area of the application manager unit 22 when the application D2 is an application that has received predetermined authentication (hereinafter referred to as A application).
  • the application manager unit 22 records the application in the storage area of the WEB server unit 23 when the application D2 is an application that has not received predetermined authentication (hereinafter referred to as B application).
  • the A application is an application that is not subject to screen presentation control by the presentation control signal.
  • the B application is an application that is a target of screen presentation control based on the presentation control signal.
  • the WEB server unit 23 stores the B application received by the application manager unit 22.
  • FIG. 2 is a directory configuration diagram illustrating an example of information stored in the application manager unit 22 and the WEB server unit 23.
  • the application manager unit 22 stores files root.html, root.js, and video in the root directory.
  • the application manager unit 22 is provided with a No_App directory, an A_App directory, and a B_App directory, respectively, under the root directory.
  • Root.html stored in the root directory is an HTML document that defines a framework of information to be displayed on the display unit 40. Specifically, root.html is composed of only iframe (inline frame) elements to be displayed on the entire screen, and by displaying other HTML documents with the iframe elements, display including applications and broadcast contents is displayed. Information can be generated. Also, root.js stored in the root directory is a script that describes instructions to be executed by root.html.
  • a command for issuing a policy level notification corresponding to the presentation control signal to the reference destination of the iframe element (hereinafter referred to as a listenEvent command), and root.html
  • a command for referring to an HTML document corresponding to an application to be executed is described in the iframe element.
  • the video file stored in the root directory is a file for accessing the broadcast content acquired by the tuner unit 10. That is, when display information is generated from an HTML document that refers to the video file, display information that displays broadcast content in a portion corresponding to an element that refers to the video file is generated.
  • the application manager unit 22 stores the files No_App.html and No_App.css in the No_App directory.
  • No_App.html stored in the No_App directory is an HTML document that is referred to by the iframe of root.html when there is no application to be executed. Specifically, No_App.html is composed only of the video element. The video element refers to the video file in the root directory.
  • No_App.css stored in the No_App directory is a style sheet file indicating the arrangement of the constituent elements of No_App.html. Specifically, No_App.css defines the display position and size so that the video element of No_App.html is displayed on the entire screen.
  • the application manager unit 22 stores the A app file received from the application server in the A_App directory.
  • Examples of the A application file include an HTML document, a script to be referred to by the HTML document, and a style sheet file indicating the arrangement of components of the HTML document.
  • the HTML document of the A application includes a video element that refers to the video file in the root directory and other elements that constitute the application.
  • the application manager unit 22 stores B_App.html, B_App.js, and a plurality of style sheet files (B_App_001.css, B_App_002.css, etc.) in the B_App directory.
  • B_App.html stored in the B_App directory is an HTML document that defines a framework for displaying the B application and broadcast content when the B application is executed.
  • B_App.html is composed of an iframe element that refers to the B application and a video element that refers to the video file in the root directory.
  • B_App.html is referred to by the iframe element of root.html when the application to be executed is the B application.
  • B_App.js stored in the B_App directory is a script describing a command to be executed by B_App.html. Specifically, in accordance with the policy level notified from root.html, an instruction for switching the style sheet file to be referred to (hereinafter referred to as a changeCSS instruction), and HTML of B application to be executed on the iframe element of B_App.html A changeHTML command for referring to a document is described. Further, the style sheet files (arrangement information) stored in the B_App directory are style sheet files indicating the arrangement of components of B_App.html. Specifically, each style sheet file defines the display position and size of the iframe element and video element of B_App.html.
  • each style sheet file is a value indicating the policy level.
  • B_App_001.css is a style sheet file corresponding to the policy level 001.
  • B_App_002.css is a style sheet file corresponding to the policy level 002. That is, the application manager unit 22 stores the style sheet file in association with the policy level.
  • the WEB server unit 23 stores the file of the B application received by the application manager unit 22.
  • Examples of the B application file include an HTML document, a script to be referred to by the HTML document, a style sheet file indicating the arrangement of components of the HTML document, and the like.
  • At least the video file among the files stored in the application manager unit 22 is set so that it can be referred to only from the files under the root directory of the application manager unit 22.
  • this can be realized by setting the application manager unit 22 to permit access to the video file only when the HTTP access referrer indicates the file of the application manager unit 22.
  • the browser unit 30 is a processing unit that generates display information by executing an application, and includes an HTML parser unit 31, a script execution unit 32 (arrangement information specifying unit), and a display information generation unit 33.
  • the HTML parser unit 31 analyzes root.html stored in the application manager unit 22.
  • the HTML parser unit 31 also analyzes the HTML document.
  • the script execution unit 32 executes a script referred to by the HTML document analyzed by the HTML parser unit 31.
  • the display information generation unit 33 generates display information to be displayed on the display unit 40 according to the analysis result of the HTML document by the HTML parser unit 31, the style sheet file referred to by the HTML document, and the execution result of the script execution unit 32.
  • the display unit 40 is implemented by a display such as an LCD (Liquid Crystal Display), and displays the display information generated by the display information generation unit 33.
  • a display such as an LCD (Liquid Crystal Display)
  • LCD Liquid Crystal Display
  • FIG. 3 is a flowchart showing the operation of the receiver 100 according to the present embodiment.
  • the HTML parser unit 31 reads and analyzes root.html stored in the root directory from the application manager unit 22 (step S1).
  • the HTML parser unit 31 identifies that root.js is referenced in root.html by analyzing root.html
  • the application manager unit 22 stores root.js stored in the root directory. Is output to the script execution unit 32.
  • the script execution unit 32 executes a changeHTML command for referring to an HTML document corresponding to an application to be executed in the iframe element of root.html according to root.js. Since there is no application to be executed when the power is turned on, the script execution unit 32 refers to No_App.html in the iframe element of root.html. Accordingly, the HTML parser unit 31 reads No_App.html stored in the No_App directory from the application manager unit 22, and places the No_App.html in the iframe element of root.html (step S2). Then, the display information generation unit 33 generates display information based on the information analyzed by the HTML parser unit 31.
  • the display information generation unit 33 acquires the broadcast content acquired from the broadcast content acquisition unit 12 in a portion corresponding to the video element of No_App.html. Display information to display is generated.
  • the display unit 40 displays the display information generated by the display information generation unit 33.
  • the receiver 100 determines whether or not an instruction to turn off the power is received by a remote controller or the like (step S3).
  • step S3 When receiving an instruction to turn off the power (step S3: YES), the receiver 100 ends the process and turns off the power.
  • step S3 when an instruction to turn off the power is not received (step S3: NO), the application manager unit 22 determines whether an application activation instruction is received from the AIT acquisition unit 14 or the application selection reception unit 21 ( Step S4). When it is determined that the application activation instruction has not been received (step S5: NO), the application manager unit 22 repeatedly executes the determinations of steps S3 and S4. That is, only the broadcast content is displayed on the display unit 40 until an application activation instruction is received. On the other hand, when it is determined that the application activation instruction has been received (step S4: YES), the application manager unit 22 determines whether the application is the A application or the B application (step S5).
  • step S5 A
  • the application manager unit 22 determines that the application type is the A application
  • the application manager unit 22 receives the selected application from the application server
  • the application manager unit 22 receives an HTML document describing the application.
  • the script execution unit 32 detects an event indicating that the application manager unit 22 has recorded the A application, and refers to the A application recorded by the application manager unit 22 in the iframe element of root.html according to root.js.
  • Execute the changeHTML command In accordance with this, the HTML parser unit 31 reads out the HTML document describing the application stored in the A_App directory from the application manager unit 22, and places the HTML document in the iframe element of root.html (step S7). .
  • the display information generation unit 33 generates display information based on the information analyzed by the HTML parser unit 31.
  • A_App.html includes a video element that refers to the video file
  • the display information generation unit 33 acquires the broadcast content acquired from the broadcast content acquisition unit 12 in a portion corresponding to the video element of A_App.html. Display information to display is generated.
  • the display unit 40 displays the display information generated by the display information generation unit 33.
  • the receiver 100 determines whether or not an instruction to turn off the power is received by a remote controller or the like (step S8).
  • the receiver 100 ends the process and turns off the power.
  • step S8: NO the application manager unit 22 determines whether an application stop instruction has been received from the AIT acquisition unit 14 or the application selection reception unit 21 (Ste S9). When it is determined that the application stop instruction has not been received (step S9: NO), the application manager unit 22 repeatedly executes the determinations of steps S8 and S9. That is, the A application including the broadcast content is displayed on the display unit 40 until an application activation instruction is received. On the other hand, if the application manager unit 22 determines that an application stop instruction has been received (step S9: YES), the script execution unit 32 executes a changeHTML instruction that causes the iframe element of root.html to refer to No_App.html, Return to step S2.
  • step S5 the application manager unit 22 determines in step S5 that the type of application is the B application (step S5: B)
  • the application manager unit 22 receives the selected application from the application server, and receives an HTML document describing the application. It records in the WEB server part 23 (step S10).
  • the script execution unit 32 detects an event indicating that the application manager unit 22 has recorded the B application, and executes a changeHTML command that causes the iframe element of root.html to refer to B_App.html according to root.js. . Accordingly, the HTML parser unit 31 reads B_App.html stored in the B_App directory from the application manager unit 22, and places the B_App.html in the iframe element of root.html (step S11). Next, when the HTML parser unit 31 specifies that B_App.js is referenced in B_App.html by analyzing B_App.html, the application manager unit 22 stores B_App.js stored in the B_App directory. Is output to the script execution unit 32.
  • the script execution unit 32 executes a changeHTML command that refers to the HTML document in which the application recorded in the WEB server 23 in step S10 is referred to in the iframe element of B_App.html according to B_App.js.
  • the HTML parser unit 31 reads an HTML document describing the selected application from the WEB server unit 23, and arranges the HTML document in the iframe element of B_App.html (step S12).
  • the script execution unit 32 acquires a presentation control signal from the presentation control signal acquisition unit 13 (step S13).
  • the presentation control signal acquisition unit 13 may simultaneously acquire a plurality of presentation control signals, for example, when acquiring presentation control signals from EIT and EEW, respectively.
  • the script execution part 32 specifies the policy level which a presentation control signal shows by execution of the listenEvent command described in root.js (step S14).
  • the policy level is specified according to the following priority order.
  • the priority order is, for example, SDT, EIT, PMT, EEW / EWS in order from the lowest.
  • the script execution part 32 can specify the policy level which the presentation control signal with the highest urgency shows as a policy level used for presentation control.
  • the script execution unit 32 notifies the specified policy level to B_App.html referenced by the iframe element of root.html.
  • the script execution unit 32 executes a changeCSS command that specifies a style sheet file corresponding to the policy level in accordance with B_App.js referenced by B_App.html.
  • the HTML parser unit 31 reads the style sheet file from the application manager unit 22. That is, when the policy level specified in step S14 is 001, the HTML parser unit 31 reads B_App_001.css stored in the B_App directory from the application manager unit 22. Thereby, the HTML parser unit 31 switches the style sheet file applied to B_App.html to a style sheet file corresponding to the policy level (step S15).
  • the display information generation unit 33 generates display information based on the information analyzed by the HTML parser unit 31 and the read style sheet file.
  • the display information generation unit 33 acquires the broadcast content acquired from the broadcast content acquisition unit 12 in a portion corresponding to the video element of B_App.html. Display information to display is generated.
  • the HTML element referred to by the iframe element of B_App.html includes a video element that refers to the video file
  • the reference source is not a file under the root directory of the application manager unit 22, so Broadcast content is not displayed in the corresponding part.
  • the display unit 40 displays the display information generated by the display information generation unit 33.
  • the receiver 100 determines whether or not an instruction to turn off the power is received by a remote controller or the like (step S16).
  • step S16 determines whether or not an instruction to turn off the power is received by a remote controller or the like.
  • step S16: NO when an instruction to turn off the power is not received (step S16: NO), the application manager unit 22 determines whether an application stop instruction has been received from the AIT acquisition unit 14 or the application selection reception unit 21 ( Step S17). If it is determined that the application stop instruction has not been accepted (step S17: NO), the application manager unit 22 returns to step S13. That is, until the application activation instruction is received, the broadcast content and the B application are displayed on the display unit 40, and the arrangement thereof changes according to the policy level indicated by the presentation control signal.
  • step S17 YES
  • the script execution unit 32 executes a changeHTML instruction that causes the iframe element of root.html to refer to No_App.html, Return to step S2.
  • the application manager unit 22 stores the style sheet file indicating the arrangement of the broadcast content and the B application in association with the policy level.
  • the display information generation part 33 produces
  • the application manager unit 22 defines an HTML document (markup document) in which elements that refer to broadcast contents and elements that refer to applications are defined as arrangement information indicating the arrangement of broadcast contents and applications.
  • a style sheet file indicating the arrangement of each element is stored.
  • the display information generation unit 33 outputs the application as display information when the application is an A application, and arranges the application according to the style sheet file when the application is the B application.
  • This HTML document is output as display information.
  • each of the A applications can switch the arrangement in the same manner as when the B application is executed by referring to a script for switching the style sheet file.
  • a style sheet file is used as the arrangement information.
  • an HTML document may be used as the arrangement information.
  • the application manager unit 22 stores a plurality of HTML documents that define the arrangement corresponding to the policy level, and the script execution unit 32 switches the HTML document to be read by the HTML parser unit 31 according to the policy level.
  • a style sheet file and an HTML document may be used together as the arrangement information. For example, only the style sheet file may be switched at the policy level 001, and both the style sheet file and the HTML document may be switched at the policy level 002.
  • the receiver 100 described above has a computer system inside.
  • the operation of each processing unit described above is stored in a computer-readable recording medium in the form of a program, and the above processing is performed by the computer reading and executing this program.
  • the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like.
  • the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.
  • the program may be for realizing a part of the functions described above. Furthermore, what can implement
  • the present invention controls the display of the content display screen and the application display screen according to the emergency content broadcast during the broadcast of the normal content broadcast according to a predetermined schedule, and for each content to be broadcast.
  • the present invention can be applied to a receiver, a program, a reception method, and the like that control the display of the content display screen and the application display screen without distributing the control information.

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

Abstract

L'invention concerne un récepteur qui comprend : une unité d'acquisition de contenu de diffusion qui acquiert un contenu à partir d'un signal de diffusion ; une unité de stockage d'informations de disposition qui stocke plusieurs éléments d'informations de disposition, dont chacun indique une disposition à la fois d'un contenu et d'une application à afficher conjointement avec le contenu, d'une manière telle que des niveaux de politique représentant chacun une étape respective d'un procédé de présentation d'application sont associés aux éléments respectifs d'informations de disposition ; une unité d'acquisition de signal de commande de présentation qui acquiert, à partir du signal de diffusion, un signal de commande de présentation pour commander le procédé de présentation d'application ; une unité de détermination d'informations de disposition qui détermine, parmi les éléments d'informations de disposition stockés par l'unité de stockage d'informations de disposition, un élément d'informations de disposition auquel un niveau de politique indiqué par le signal de commande de présentation acquis par l'unité d'acquisition de signal de commande de présentation est associé ; et une unité de génération d'informations d'affichage qui génère un élément d'informations d'affichage dans lequel le contenu acquis par l'unité d'acquisition de contenu de diffusion et l'application sont disposés conformément à l'élément d'informations de disposition déterminé par l'unité de détermination d'informations de disposition.
PCT/JP2012/072941 2011-11-22 2012-09-07 Récepteur, programme et procédé de réception WO2013077060A1 (fr)

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JP2011-254997 2011-11-22
JP2011254997 2011-11-22

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000175155A (ja) * 1998-12-08 2000-06-23 Canon Inc 放送受信装置およびその方法
WO2004034698A1 (fr) * 2002-10-09 2004-04-22 Matsushita Electric Industrial Co., Ltd. Processeur d'information
JP2004272712A (ja) * 2003-03-10 2004-09-30 Matsushita Electric Ind Co Ltd 受信装置および情報閲覧方法

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Publication number Priority date Publication date Assignee Title
KR100965471B1 (ko) * 2004-11-02 2010-06-24 가부시키가이샤 테레비 아사히 데이터 비젼 자막 첨부 정지 화상 컨텐츠 작성 장치, 자막 첨부 정지화상 컨텐츠 작성 프로그램 및 자막 첨부 정지 화상 컨텐츠작성 시스템
WO2009011319A1 (fr) * 2007-07-13 2009-01-22 Sharp Kabushiki Kaisha Récepteur de diffusion, système de diffusion, programme de réception de diffusion et support d'enregistrement
JP4510925B2 (ja) * 2008-10-29 2010-07-28 日本放送協会 地上デジタルテレビジョン放送における緊急速報を受信する受信機、及び緊急速報を送信する送信装置、並びに伝送システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000175155A (ja) * 1998-12-08 2000-06-23 Canon Inc 放送受信装置およびその方法
WO2004034698A1 (fr) * 2002-10-09 2004-04-22 Matsushita Electric Industrial Co., Ltd. Processeur d'information
JP2004272712A (ja) * 2003-03-10 2004-09-30 Matsushita Electric Ind Co Ltd 受信装置および情報閲覧方法

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