US20120050619A1 - Reception apparatus, reception method, transmission apparatus, transmission method, program, and broadcasting system - Google Patents

Reception apparatus, reception method, transmission apparatus, transmission method, program, and broadcasting system Download PDF

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Publication number
US20120050619A1
US20120050619A1 US13/071,551 US201113071551A US2012050619A1 US 20120050619 A1 US20120050619 A1 US 20120050619A1 US 201113071551 A US201113071551 A US 201113071551A US 2012050619 A1 US2012050619 A1 US 2012050619A1
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US
United States
Prior art keywords
content
application program
video
trigger information
active
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.)
Abandoned
Application number
US13/071,551
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English (en)
Inventor
Naohisa Kitazato
Shinobu Hattori
Yoshiharu Dewa
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.)
Saturn Licensing LLC
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to US13/071,551 priority Critical patent/US20120050619A1/en
Assigned to SONY CORPORATION reassignment SONY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HATTORI, SHINOBU, DEWA, YOSHIHARU, KITAZATO, NAOHISA
Priority to PCT/JP2011/068836 priority patent/WO2012029567A1/ja
Priority to JP2012531798A priority patent/JP5916614B2/ja
Priority to MX2013002074A priority patent/MX2013002074A/es
Priority to CN201180040453.1A priority patent/CN103069829B/zh
Priority to KR1020137004216A priority patent/KR101885390B1/ko
Priority to CA2806837A priority patent/CA2806837C/en
Priority to EP11821584.7A priority patent/EP2613525A4/en
Publication of US20120050619A1 publication Critical patent/US20120050619A1/en
Priority to US15/246,021 priority patent/US10924813B2/en
Assigned to SATURN LICENSING LLC reassignment SATURN LICENSING LLC ASSIGNMENT OF THE ENTIRE INTEREST SUBJECT TO AN AGREEMENT RECITED IN THE DOCUMENT Assignors: SONY CORPORATION
Abandoned legal-status Critical Current

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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]
    • H04N21/60—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 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/654—Transmission by server directed to the client
    • H04N21/6543—Transmission by server directed to the client for forcing some client operations, e.g. recording
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
    • 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
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • 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
    • H04N21/439—Processing of audio elementary streams
    • H04N21/4394—Processing of audio elementary streams involving operations for analysing the audio stream, e.g. detecting features or characteristics in audio streams
    • 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, rendering scenes according to MPEG-4 scene graphs
    • H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • 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
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • 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
    • H04N21/47—End-user applications
    • H04N21/488—Data services, e.g. news ticker
    • H04N21/4882—Data services, e.g. news ticker for displaying messages, e.g. warnings, reminders
    • 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
    • H04N21/633—Control signals issued by server directed to the network components or client
    • H04N21/6332—Control signals issued by server directed to the network components or client directed to client
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8126—Monomedia components thereof involving additional data, e.g. news, sports, stocks, weather forecasts
    • H04N21/8133—Monomedia components thereof involving additional data, e.g. news, sports, stocks, weather forecasts specifically related to the content, e.g. biography of the actors in a movie, detailed information about an article seen in a video program

Definitions

  • the present invention relates to a reception apparatus, a reception method, a transmission apparatus, a transmission method, a program, and a broadcasting system and, more particularly, to a reception apparatus, a reception method, a transmission apparatus, a transmission method, a program, and a broadcasting system that are configured for suitable use in executing and ending data broadcast content in conjugation with the progress of a program or a CM (Commercial Message), for example.
  • CM Common Message
  • a band dedicated to data broadcasting was allocated in advance within the broadcasting band for digital television broadcasting at the time television broadcasting was digitalized.
  • the data broadcasting of Japan was realized by broadcasting data broadcast content by use of this dedicated band.
  • the digital television broadcasting in the USA has no allocation of such a band dedicated to data broadcasting as the Japanese counterpart.
  • a broadcasting band for the current American digital television broadcasting is occupied by a video band, an audio band, and a control information band, so that no band is allocated to data broadcast content as shown in FIG. 1A . Therefore, the allocation of the band for broadcasting the content for data broadcasting to the limited broadcasting band for digital television broadcasting must narrow the video band and the audio band as shown in FIG. 1B , for example.
  • FIG. 2 there is shown an exemplary configuration of a digital television program retransmission system based on a CATV network.
  • This retransmission system is mainly made up of a broadcasting apparatus 1 , a CATV retransmission apparatus 2 , a digital television receiver 4 , a STB (Set Top Box) 5 , and a television receiver 6 .
  • the broadcasting apparatus 1 installed in a broadcasting station for example broadcasts digital television broadcasting signal by use of the terrestrial wave or the satellite wave.
  • the CATV retransmission apparatus 2 installed in a cable TV station for example receives a digital television broadcast from the broadcasting apparatus 1 , removes unnecessary information from the received broadcast, adds CATV-unique information to the received broadcast, and retransmits the processed broadcast to the digital television receiver 4 and the set top box 5 via a CATV network 3 .
  • the CATV retransmission apparatus 2 is made up of a tuner 11 , a PID (Packet Identifier) filter 12 for filtering a packet having a predetermined packet ID, a CATV-unique signal generation block 13 , a multiplexing block 14 , and a modulation block 15 .
  • PID Packet Identifier
  • the tuner 11 receives a digital television broadcast signal of each channel and demodulates the received signal, outputting a resultant TS (Transport Stream) to the PID filter 12 .
  • the PID filter 12 removes packets (not associated with AV (audio/video) content as a program) corresponding to a predetermined packet ID from the TS and outputs the resultant TS to the multiplexing block 14 .
  • the CATV-unique signal generation block 13 generates a packet in which information unique to this CATV station is stored and outputs the generated packet to the multiplexing block 14 .
  • the multiplexing block 14 multiplexes the output of the PID filter 12 and the output of the CATV-unique signal generation block 13 and outputs a resultant signal to the modulation block 15 .
  • the modulation block 15 modulates the output of the multiplexing block 14 by a demodulating scheme suited to the CATV network 3 and retransmits the modulated signal to the digital television receiver 4 and the set top box 5 via the CA
  • the digital television receiver 4 compliant with CATV receives the TS of the digital television broadcast retransmitted via the CATV network 3 and decodes the received TS, thereby displaying a resultant video signal and outputting a resultant audio signal.
  • the set top box 5 compliant with CATV receives the TS of the digital television broadcast retransmitted via the CATV network 3 and decodes the received TS, thereby outputting a resultant video signal and an audio signal to the television receiver 6 via an HDMI cable for example.
  • the television receiver 6 displays the video signal and outputs the audio signal.
  • a packet (not associated with AV content as a program) corresponding to a predetermined packet ID is removed from the TS of each digital broadcasting signal by the PID filter 12 . For this reason, if a band for broadcasting content for data broadcasting is allocated to the broadcasting band as shown in FIG. 1B , packets stored in the content for data broadcasting may be excluded by this PID filter 12 .
  • the present invention addresses the above-identified and other problems associated with related—art methods and apparatuses and solves the addressed problems by providing a reception apparatus, a reception method, a transmission apparatus, a transmission method, a program, and a broadcasting system that are configured to realize the content for data broadcasting that can be executed and ended in conjugation with the progress of a television broadcast program and a CM without providing a band for data broadcasting in the broadcasting band of digital television broadcasting.
  • a reception apparatus for receiving transmitted AV (Audio/Video) content.
  • This reception apparatus has extraction means for extracting trigger information transmitted with the AV content and associated with control of an application program to be executed in conjugation with the AV content and control means for controlling, in response to a command indicated by the extracted trigger information, execution of the application program and, if a video of the AV content has been switched, executing any one of continuation and termination of the application program that is active.
  • control means can continue or terminate the application program that is active.
  • the above-mentioned execution continuation information includes any one of ES-bound in which a continuation scope of execution of the application program that is active with a video of AV content switched is within a same ES (Elementary Stream); service-bound in which a continuation scope of execution of the application program that is active with a video of AV content switched is within a same service; provider-bound in which a continuation scope of execution of the application program that is active with a video of AV content switched is within a same broadcasting organization; and un-bound in which a continuation scope of execution of the application program that is active with a video of AV content switched is not arranged.
  • the above-mentioned execution continuation information is included in the trigger information.
  • the control means further controls acquisition and launching of the application program, event firing in the application program that is active, suspension of the application program that is active, and termination of the application program that is active in accordance with a command indicated by the extracted trigger information.
  • a reception method for a reception apparatus for receiving transmitted AV content has the steps of extracting, by the receiving apparatus, trigger information transmitted with the AV content and associated with control of an application program to be executed in conjugation with the AV content; controlling execution, by the reception apparatus, of the application program in response to a command indicated by the extracted trigger information; and controlling continuation or termination of execution, by the reception apparatus, of the application program that is active if a video of the AV content has been switched.
  • a program for controlling a reception apparatus for receiving transmitted AV content makes a computer of the reception apparatus execute processing that has the steps of extracting, by the receiving apparatus, trigger information transmitted with the AV content associated with control of an application program to be executed in conjugation with the AV content; controlling execution, by the reception apparatus, of the application program in response to a command indicated by the extracted trigger information; and controlling continuation or termination of execution, by the reception apparatus, of the application program that is active if a video of the AV content has been switched.
  • the trigger information associated with the control of an application program to be executed in conjugation with AV content is extracted, the trigger information being transmitted with the AV content.
  • the execution of the application program is controlled in accordance with a command indicated by the extracted trigger information. If the video of the AV content is switched, the execution of the active application is continued or terminated.
  • transmission apparatus for transmitting AV content.
  • the transmission apparatus has transmission means for transmitting, along with the AV content, trigger information associated with control of an application program to be executed in a reception apparatus in conjugation with the AV content, wherein the trigger information includes execution continuation information for determining, if a video of the AV content is switched when the application program is active in the reception apparatus, continuation or termination of execution of the application program that is active.
  • the execution continuation information includes any one of ES-bound in which a continuation scope of execution of the application program that is active with a video of AV content switched is within a same ES; service-bound in which a continuation scope of execution of the application program that is active with a video of AV content switched is within a same service; provider-bound in which a continuation scope of execution of the application program that is active with a video of AV content switched is within a same broadcasting organization; and un-bound in which a continuation scope of execution of the application program that is active with a video of AV content switched is not arranged.
  • a command indicated by the trigger information includes at least one of commands for controlling acquisition and launching of the application program, event firing in the application program that is active, suspension of the application program that is active, and termination of the application program that is active.
  • a transmission method for a transmission apparatus for transmitting AV content has the step of transmitting, by the transmission apparatus, along with the AV content, trigger information associated with control of an application program to be executed in a reception apparatus in conjugation with the AV content; wherein the trigger information includes execution continuation information for determining, if a video of the AV content is switched when the application program is active in the reception apparatus, continuation or termination of execution of the application program that is active.
  • a program for controlling a transmission apparatus for transmitting AV content the program making a computer of the transmission apparatus execute processing.
  • This processing has the step of transmitting, by the transmission apparatus, along with the AV content, trigger information associated with control of an application program to be executed in a reception apparatus in conjugation with the AV content.
  • the trigger information includes execution continuation information for determining, if a video of the AV content is switched when the application program is active in the reception apparatus, continuation or termination of execution of the application program that is active.
  • the trigger information associated with the control of an application program to be executed in the reception apparatus in conjugation with AV content is transmitted with the AV content.
  • This trigger information includes the execution continuation information for determining to continue or terminate the execution of the active application program when the video of the AV content is switched with the application program being active in the reception apparatus.
  • a broadcasting system is made up of a transmission apparatus for transmitting AV content and a reception apparatus for receiving the transmitted AV content.
  • the above-mentioned transmission apparatus has transmission means for transmitting, along with the AV content, trigger information associated with control of an application program to be executed in a reception apparatus in conjugation with the AV content.
  • the above-mentioned reception apparatus has extraction means for extracting trigger information transmitted with the AV content and control means for controlling, in response to a command indicated by the extracted trigger information, execution of the application program and, if a video of the AV content has been switched, executing continuation or termination of the application program that is active.
  • the trigger information associated with the control of an application program to be executed in the reception apparatus in conjugation with AV content is transmitted from the transmission apparatus along with AV content.
  • the trigger information transmitted with the AV content is extracted.
  • the execution of the application program is controlled. If the video of the AV content is switched, the execution of the active application program is continued or terminated.
  • data broadcasting content can be terminated in response to a user operation for switching the video of television broadcasting.
  • an operation of data broadcasting content in the reception apparatus can be controlled in conjugation with the progress of a program or a CM of television broadcasting.
  • an operation of data broadcasting content in the reception apparatus can be controlled in conjugation with the progress of a program or a CM of television broadcasting.
  • FIGS. 1A and 1B are diagrams illustrating a broadcasting band for digital television broadcasting
  • FIG. 2 is a schematic block diagram illustrating an exemplary configuration of a related-art CATV retransmission system
  • FIG. 3 is a schematic block diagram illustrating an exemplary configuration of a broadcasting system practiced as one embodiment of the present invention
  • FIG. 4 is a block diagram illustrating an exemplary configuration of a reception apparatus practiced as another embodiment of the present invention.
  • FIG. 5 is a diagram illustrating a concept of transmitting trigger information as stored in a PCR packet of a TS
  • FIG. 6 is a diagram illustrating a specific arrangement of a trigger information in the PCR packet
  • FIGS. 7A and 7B are diagrams illustrating examples of embedding a trigger information in a video signal
  • FIG. 8 is a diagram illustrating items included in the trigger information of a precache command
  • FIG. 9 is a diagram illustrating items included in the trigger information of an execute command.
  • FIG. 10 is a diagram illustrating items included in the trigger information of an inject event command
  • FIG. 11 is a diagram illustrating items included in the trigger information of a suspend command
  • FIG. 12 is a diagram illustrating items included in the trigger information of a terminate command
  • FIG. 13 is a diagram illustrating one example of a syntax of trigger information
  • FIGS. 14A , 14 B, 14 C, 14 D, 14 E, 14 F, and 14 G are diagrams illustrating display examples to be obtained when a data broadcasting application program is executed in conjugation with the progress of programs and CMs;
  • FIG. 15 is a flowchart indicative of trigger information responding processing
  • FIG. 16 is a diagram illustrating an exemplary operation scenario of a data broadcasting application program
  • FIG. 17 is a schematic diagram illustrating status transitions of a data broadcasting application program
  • FIG. 18 is a schematic diagram illustrating an exemplary configuration of a digital broadcasting signal
  • FIG. 19 is a flowchart indicative of video switching interrupt processing
  • FIG. 20 is a schematic diagram illustrating an operation scenario when App_life_scope is ES-bound
  • FIG. 21 is a schematic diagram illustrating an operation scenario when App_life_scope is service-bound
  • FIG. 22 is a schematic diagram illustrating an operation scenario when App_life_scope is provider-bound
  • FIG. 23 is a schematic diagram illustrating an operation scenario when App_life_scope is un-bound.
  • FIG. 24 is a block diagram illustrating an exemplary configuration of a computer.
  • This broadcasting system 30 is configured to realize the content for data broadcasting capable of linking with AV content such as a program and a CM in a state where no band is provided for broadcasting the content for data broadcasting in the broadcasting band for digital television broadcasting as with the current state in USA for example.
  • the content for data broadcasting is realized by the execution of an application program supplied to a reception apparatus by the computer thereof, so that the content for data broadcasting is hereafter referred to a data broadcasting application program or a data broadcasting application.
  • This broadcasting system 30 is made up of a broadcasting apparatus 41 and a server 42 arranged on the side of a broadcasting station and a reception apparatus 60 arranged on the receiver side.
  • the broadcasting apparatus 41 is configured to transmit digital television broadcasting signals.
  • the broadcasting apparatus 41 includes, in a digital television broadcasting signal, trigger information that is a command for specifying the execution of the content for data broadcasting to be executed in conjugation with a program and a CM, thereby transmitting the trigger information as included in the digital television broadcasting signal.
  • trigger information is multiplexed with a transport stream (TS) of a digital television broadcasting signal or embedded in a video signal for transmission.
  • TS transport stream
  • the trigger information includes the information about an acquisition source of a data broadcasting application, in addition to the information indicative of command type. Details of the trigger information will be described later.
  • the server 42 supplies data broadcasting applications in response to a request from the reception apparatus 60 that has accessed the server 42 via the Internet 50 .
  • the reception apparatus 60 receives a digital broadcasting signal broadcast from the broadcasting apparatus 41 and outputs the video and audio of AV content (a television program, a CM, and so on) to a display monitor, not shown.
  • the reception apparatus 60 accesses the server 42 via the Internet 50 to obtain a data broadcasting application. It should be noted that this reception apparatus 60 may be arranged as a standalone unit or as incorporated in a television receiver or a video recorder, for example.
  • the reception apparatus 60 is made up of a tuner 61 , a demultiplexer 62 , an audio decoder 63 , an audio output block 64 , a video decoder 65 , a trigger detection block 66 , a video output block 67 , a control block 68 , a memory 69 , an operator block 70 , a recording block 71 , a communication I/F 72 , a cache memory 73 , an application engine 74 , and an application memory 75 .
  • the tuner 61 receives a digital television broadcasting signal corresponding to a channel selected by a user, demodulates the received signal, and outputs a resultant TS to the demultiplexer 62 .
  • the demultiplexer 62 separates the TS supplied from the tuner 61 into an audio encoded signal, a video encoded signal, and a control signal and supplies these signals to the audio decoder 63 , the video decoder 65 , and the control block 68 , respectively.
  • the demultiplexer 62 extracts a PCR (Program Clock Reference) packet that includes the trigger information arranged in the TS and outputs the extracted PCR packet to the trigger detection block 66 .
  • PCR Program Clock Reference
  • the audio decoder 63 decodes the entered audio encoded signal and outputs a resultant audio signal to the audio output block 64 .
  • the audio output block 64 outputs the entered audio signal to a subsequent stage (a loudspeaker for example).
  • the video decoder 65 decodes the entered video encoded signal and outputs a resultant video signal to the trigger detection block 66 and the video output block 67 .
  • the trigger detection block 66 always monitors the entered video signal to detect trigger information embedded in the video signal and outputs the detected trigger information to the control block 68 (if the trigger information is arranged only in a TS, the operation of this trigger detection block 66 is not required). In addition, the trigger detection block 66 extracts trigger information from a PCR packet entered from the demultiplexer 62 and outputs the extracted trigger information to the control block 68 .
  • the video output block 67 outputs the video signal entered from the video decoder 65 to a subsequent stage (a display monitor for example).
  • the video output block 67 combines the video signal of the data broadcasting application entered from the application engine 74 and the video signal entered from the video decoder 65 and outputs a resultant signal to a subsequent stage.
  • the control block 68 controls the entire reception apparatus 60 by executing a control program stored in the memory 69 . Also, on the basis of the trigger information entered from the trigger detection block 66 , the control block 68 controls the acquisition, launching, event-firing, pausing, and terminating of the data broadcasting application.
  • the memory 69 stores the control program that is executed by the control block 68 .
  • This control program can be updated on the basis of the update data that is obtained from a digital television broadcasting signal or via the Internet 50 .
  • the operator block 70 receives operations done by the user and supplies the operation signals corresponding to the operations to the control block 68 .
  • the recording block 71 downloads the distributed data broadcasting application to store the downloaded data broadcasting application in a recording media incorporated in the recording block 71 .
  • the communication I/F 72 connects the reception apparatus 60 to the server 42 via the Internet 50 under the control of the application engine 74 .
  • the application engine 74 obtains a data broadcasting application from the server 42 via the communication I/F 72 and the Internet 50 and stores the data broadcasting application in the cache memory 73 .
  • the application engine 74 reads the data broadcasting application from the recording block 71 or the cache memory 73 to execute the data broadcasting application.
  • the application memory 75 is composed of a work memory 75 A and a save memory 75 B.
  • the application engine 74 stores data (to be more specific, the data including the layer of displayed information) associated with the active data broadcasting application into the work memory 75 A. If the application engine 74 suspends the active data broadcasting application, the application engine 74 moves the data in the work memory 75 A of the application memory 75 to the save memory 75 B. To restart the suspended data broadcasting application, the application engine 74 moves the data from the save memory 75 B to the work memory 75 A to resume the state as it was before the pausing.
  • the two areas of the same size in the application memory 75 may be alternately specified as the work memory 75 A and the save memory 75 B. This memory switching arrangement eliminates the necessity of moving data between the work memory 75 A and the save memory 75 B.
  • the following describes a method of transmitting trigger information.
  • FIG. 5 there is shown a concept in which trigger information is transmitted as stored in a PCR packet of a TS of a digital television broadcast signal.
  • Trigger information is distributed as stored in a PCR packet corresponding to a proper timing for linking with a program or a CM. Therefore, as shown in the figure, trigger information is not stored in all PCR packets. Normally, each PCR packet passes a PID filter 12 of the CATV retransmission apparatus 2 as shown in FIG. 2 , so that trigger information can be supplied also to a reception apparatus (the digital television receiver 4 shown in FIG. 2 ) that uses a CATV network.
  • trigger information is consecutively transmitted two or more times in the same content in consideration of a reception failure due to a wave trouble or a drop (a reception failure) in the reception apparatus 60 .
  • PCR is stored in adaptation_field of a TS packet, in which trigger information (Trigger_Info_descriptor in the figure) is stored in transport_private_data_byte subsequent to PCR. It should be noted that, if trigger information is stored, transport_private_data_flag of Various_flags arranged in front of PCR is set to “1.”
  • trigger information is transmitted as stored in a PCR; however, the storage and transmission of trigger information is not restricted to this method.
  • trigger signal may be embedded in video information itself.
  • FIGS. 7A and 7B there are shown two types of examples of embedding trigger information in a video signal.
  • FIG. 7A shows an example in which trigger information is two-dimensionally barcoded to be superimposed on a predetermined location (the lower right corner in this case) of the image of a video signal.
  • FIG. 7B shows an example in which trigger information is video-coded to be superimposed on the lower several lines of the image of a video signal.
  • the trigger information shown in FIG. 7A and FIG. 7B is detected by the trigger detection block 66 of the reception apparatus 60 .
  • the trigger information is arranged on the screen of a television program, so that the trigger information can be supplied to any reception apparatuses (the television receiver 6 shown in FIG. 2 for example) that uses a CATV network.
  • the trigger information (a two-dimensional barcode or a video code) on the screen is visually recognizable by the user of the reception apparatus 60 ; however, if this is not desired, the two-dimensional barcode or the video code may be masked by the pixels therearound before being displayed.
  • Trigger information is classified according to commands indicated by the trigger information. There are five types of commands; pre-cache command, execute command, inject event command, suspend command, and terminate command. It is also practicable to add other commands to the above-mentioned commands.
  • a pre-cache command causes the reception apparatus 60 to acquire a data broadcasting application.
  • Trigger_id is information for identifying this trigger information. If pieces of trigger information having the same contents are transmitted two or more times, each piece of trigger information has the same Trigger_id.
  • Protocol_version is indicative of the version of a protocol of this trigger information.
  • Command_code is indicative of the type of the command of this trigger information. In the example shown in FIG. 8 , Command_code has information indicative of a pre-cache command.
  • App_id is information for identifying a data broadcasting application to be obtained in correspondence with this trigger information.
  • App_type is information indicative of the type (HTML5, BML, Java or the like for example) of the data broadcasting application corresponding to this trigger information.
  • App_url is the URL of the acquisition source (the server 42 in this case) of the data broadcasting application.
  • Broadcast_App_flag, Downloaded_App_flag, and Internet_App_flag are indicative of locations of the program data of the data broadcasting applications corresponding to this trigger information.
  • Broadcast_App_flag is set to “1” if the data broadcasting application corresponding to this trigger information is obtainable from a digital television broadcast signal.
  • Downloaded_App_flag is set to “1” if the data broadcasting application corresponding to this trigger information has already been broadcast by a downloaded broadcast service and therefore is obtainable from a local storage (the recording block 71 for example) if the data broadcasting application has been received by the reception apparatus 60 .
  • Internet_App_flag is set to “1” if the data broadcasting application corresponding to this trigger information is obtainable from the application server 42 via the Internet 50 .
  • An execute command causes the reception apparatus 60 to launch a data broadcasting application.
  • Trigger_id, Protocol_version, Command_code, Trigger_ validity, App_id, App_type, App_url, Broadcast_App_flag, Downloaded_App_flag, and Internet_App_flag are substantially the same as those of the trigger information that is a pre-cache command shown in FIG. 8 .
  • App_life_scope included in the trigger information has information indicative of a condition for continuing the execution of the data broadcasting application launched in response to the trigger information as this a execute command being executed in the case where various video switching operations (details thereof will be described later) have been executed by the user.
  • App_life_scope has one of ES-bound, service-bound, provider-bound, and un-bound.
  • ES-bound denotes that, only during the same video ES is decoded and reproduced, the execution of the data broadcasting application is continued. Namely, for example, in responding to a case where video having different viewpoints are switched within the same program, the active data broadcasting application is terminated.
  • Service-bound denotes that, only during a period in which the same service is selected (namely, the same channel is selected), the execution of the data broadcasting application is continued. Namely, when service switching is executed, the active data broadcasting application is terminated.
  • Provider-bound denotes that, only during a period in which a service from the same provider (namely, the broadcasting organization) is received, the execution of the data broadcasting application is continued. Namely, in the switching between services of the same provider, the execution of the data broadcasting application is continued; if switching between services of different providers is executed, the active data broadcasting application is terminated.
  • Un-bound denotes that, if a video switching operation is executed, the execution of the data broadcasting application is continued. Namely, for example, if services are switched, the active data broadcasting application is not terminated; only when the trigger information that is a terminate command to be described later is received, the active data broadcasting application is terminated.
  • control for continuously executing the data broadcasting application is practicable if this switching operation is made in the same service or the same broadcasting organization.
  • control for continuously executing the data broadcasting application common to all services (channels) is practicable.
  • App_expire_date included in the trigger information is indicative the date on which to terminate the active data broadcasting application without receiving a terminate command.
  • An inject event command causes the reception apparatus 60 to fire an event in the active data broadcasting application.
  • Trigger_id, Protocol_version, Command_code, Trigger_validity, App_id, and App_type are substantially the same those of the trigger information that is a pre-cache command shown in FIG. 8 .
  • Event_id is identification information about an even to be fired in the data broadcasting application specified by App_id.
  • Event embedded data has data that is referenced when firing the event.
  • a suspend command causes the reception apparatus 60 to suspend the active data broadcasting application.
  • Trigger_id, Protocol_version, Command_code, Trigger_validity, App_id, and App_type are substantially the same as those of the trigger information that is a pre-cache command shown in FIG. 8 .
  • a terminate command causes the reception apparatus 60 to terminate the active data broadcasting application.
  • Trigger_id, Protocol_version, Command_code, Trigger_validity, App_id, and App_type are substantially the same as those of the trigger information that is a pre-cache command shown in FIG. 8 .
  • FIG. 13 there is shown an example of a syntax of trigger information compliant with the trigger information that is each of the commands described above. It should be noted that the syntax of trigger information is not restricted to that shown in FIG. 13 . Any other syntaxes are available.
  • the following describes operations of the reception apparatus 60 that operates according to trigger information.
  • FIGS. 14A to 14G there are shown transitions between the display screens of the reception apparatus 60 when the data broadcasting application corresponding to a television program or a CM is executed by the reception apparatus 60 .
  • FIG. 14A when a television program (in this example, “News of 7:00”) is being broadcast and the contents of the program transition to economic information, the trigger information of an execute command for the data broadcasting application corresponding to the program is transmitted.
  • the data broadcasting application is launched and, on the screen on which the program is displayed, an icon (in this example, “Stock”) for prompting the user to display the data broadcasting application is displayed as shown in FIG. 14B .
  • the display in this example, stock price information display
  • the display by the data broadcasting application is executed as shown in FIG. 14C .
  • the display by the data broadcasting application is executed, thereby preventing the trouble for the user who does not require the display by the data broadcasting application.
  • the trigger information of an inject event command is transmitted in response.
  • an event is fired, thereby changing the display by the data broadcasting application on the screen as shown in FIG. 14D (in this example, to game results information display).
  • the trigger information of the suspend command for the active data broadcasting application corresponding to the program is transmitted.
  • the data broadcasting application corresponding to the program is suspended.
  • the trigger information of the execute command for the data broadcasting application corresponding to a CM is transmitted.
  • this trigger information is received, the data broadcasting application of the CM program is launched. Consequently, an icon (in this example, “Prize Application”) for prompting the user to display the data broadcasting application corresponding to the CM is displayed on the screen on which the CM is displayed as shown in FIG. 14E .
  • the display (in this example, the display for prize application) is executed on the screen by the data broadcasting application corresponding to the CM.
  • the trigger information of the execute command for the data broadcasting application corresponding to the program is transmitted corresponding to the resumption of the program.
  • this trigger information is received, the display of the data broadcasting application corresponding to the CM is deleted as shown in FIG. 14F and the display of the data broadcasting application of the program is also resumed from the state of the suspension done before.
  • the trigger information of a terminate command for the data broadcasting application corresponding to the program is transmitted.
  • the display of the data broadcasting application is deleted from the screen as shown in FIG. 14G and only the video of the program is displayed.
  • a data broadcasting application can be displayed not only by a method in which the display of a program is shrunk to provide the area for displaying the data broadcasting application as shown in FIGS. 14A to 14G , but also by another method in which the display of a data broadcasting application is superimposed on the display of a program, for example.
  • trigger information handling processing an operation to be executed upon reception of trigger information by the reception apparatus 60 with reference to FIG. 15 .
  • This trigger information handling processing is repeatedly executed while the user is viewing a television program, namely, while the reception apparatus 60 is receiving digital television broadcast signals.
  • step S 1 the trigger detection block 66 waits until a PCR packet including trigger information is entered from the demultiplexer 62 or trigger information is detected from a video signal outputted from the video decoder 65 .
  • a PCR packet including trigger information is entered or trigger information is detected from a video signal, the procedure goes to step 92 .
  • step S 2 the trigger detection block 66 outputs trigger information to the control block 68 .
  • the control block 68 reads Trigger_id of the received trigger information to determine whether the processing of step S 3 and subsequent steps has already been executed on this trigger information. If the processing of step S 3 and subsequent steps is found executed on this trigger information, then the procedure is returned to step S 1 to repeat the above-mentioned processing therefrom. By contrast, if the processing of step S 3 and subsequent steps is found not executed on this trigger information, then the procedure goes to step S 3 .
  • step S 3 the control block 68 reads Command_code of the trigger information to determine whether the command indicated by this trigger information is any one of pre-cache, execute, inject event, suspend, and terminate commands.
  • step S 4 the control block 68 determines whether the decision result in step S 3 is a pre-cache command. If the decision result is found to be a pre-cache command, then the procedure goes to step S 5 .
  • step S 5 the program data of the data broadcasting application identified by App_id of this trigger information is obtained.
  • Broadcast_App_flag of this trigger information is “1,” then the program data of the data broadcasting identified by App_id is obtained from the television broadcasting signal to be recorded to the recording block 71 .
  • Downloaded_App_flag of this trigger information is “1,” then the program data of the data broadcasting application identified by App_id is obtained from the recording block 71 that is a local storage.
  • Internet_App_flag of this trigger information is “1,” then the program data of the data broadcasting application identified by App_id is obtained from the server 42 via the Internet 50 to be recorded to the cache memory 73 .
  • step S 4 if the decision result in step S 3 is found not to be a pre-cache command, then the procedure goes to step S 6 .
  • step S 6 the control block 68 determines whether the decision result in step S 3 is an execute command. If the decision result is found to be an execute command, then the procedure goes to step S 7 .
  • step S 7 under the control of the control block 68 , the application engine 74 determines whether the data broadcasting application identified by App_id of this trigger is suspended. To be more specific, the application engine 74 determines that the data broadcasting application is suspended if the data indicative of suspension of the data broadcasting application identified by App_id is saved to the save memory 75 B.
  • step S 7 if the data broadcasting application identified by App_id is found not suspended, then the procedure goes to step S 8 .
  • step S 8 under the control of the control block 68 , the application engine 74 obtains the program data of the data broadcasting application identified by App_id if this program data has not been obtained (that is, this program data is not found in the recording block 71 or the cache memory 73 ).
  • step S 9 under the control of the control block 68 , the application engine 74 terminates the active data broadcasting application if any.
  • step S 10 under the control of the control block 68 , the application engine 74 launches the data broadcasting application identified by App_id.
  • the control block 68 extracts App_life_scope from the trigger information, relates the extracted App_life_scope with the launched data broadcasting application, and stored App_life_scope.
  • App_life_scope stored here is referenced in the interrupt processing that is executed when a video switching operation is done by the user (details will be described later with reference to FIG. 19 ). Then, the procedure is returned to step S 1 to repeat the above-mentioned processing therefrom.
  • step S 11 under the control of the control block 68 , the application engine 74 moves the data from the save memory 75 B to the work memory 75 A and launches the data broadcasting application identified by App_id. Consequently, the suspended data broadcasting application identified by App_id is resumed from the suspended state. Then, the procedure is returned to step S 1 to repeat the above-mentioned processing therefrom.
  • step S 6 if the decision result in step S 3 is found not to be an execute command, then the procedure goes to step S 12 .
  • step S 12 the control block 68 determines whether the decision result in step S 3 is an inject event command. If the decision result is found to be an inject event command, then the procedure goes to step S 13 .
  • step S 13 the control block 68 controls the application engine 74 only when App_id of this trigger information matches App_id of the active data broadcasting application, thereby firing (executing) the event corresponding to Event_id of trigger information in the active application.
  • the procedure is returned to step S 1 to repeat the above-mentioned processing therefrom.
  • step S 12 if the decision result in step S 3 is found not to be an inject event command, then the procedure goes to step S 14 .
  • step S 14 the control block 68 determines whether the decision result in step S 3 is a suspend command. If the decision result is found to be a suspend command, then the procedure goes to step S 15 .
  • step S 15 under the control of the control block 68 , the application engine 74 saves the data (namely, the data currently stored in the work memory 75 A; if the information to be displayed has a layer structure, this data includes the information indicative of the layer of the displayed information) indicative of the currently active data broadcasting application to the save memory 75 B. Then, the procedure is returned to step S 1 to repeat the above-mentioned processing therefrom.
  • the data namely, the data currently stored in the work memory 75 A; if the information to be displayed has a layer structure, this data includes the information indicative of the layer of the displayed information
  • step S 14 if the decision result in step S 3 is found not to be a suspend command, then the decision result in step S 3 should have been a terminate command, so that the procedure goes to step S 16 .
  • step S 16 under the control of the control block 68 , the application engine 74 terminates the data broadcasting application identified by App_id if this data broadcasting application is active.
  • step S 17 under the control of the control block 68 , the application engine 74 deletes the data associated with the data broadcasting application identified by App_id from the work memory 75 A and the save memory 75 B and, at the same time, deletes the program data of the data broadcasting application from the recording block 71 or the cache memory 73 . Then, the procedure is returned to step S 1 to repeat the above-mentioned processing therefrom.
  • the above-mentioned trigger information handing processing allows the launching of a data broadcasting application, the firing of an event, and terminating the data broadcasting application in conjugation with a television program or a CM. Further, the trigger information handling processing allows the suspension of a data broadcasting application in an active state and the resumption of the suspended data broadcasting application.
  • the above-mentioned trigger information handling processing allows the operation of data broadcasting application as shown in FIG. 16 .
  • FIG. 16 there is shown one example of an operation scenario of a data broadcasting application.
  • the broadcasting apparatus 41 transmits the trigger information of a pre-cache command for specifying the acquisition of the data broadcasting application corresponding to a program along the progress of a television program to the reception apparatus 60 , the reception apparatus 60 obtains the specified data broadcasting application.
  • the broadcasting apparatus 41 transmits the trigger information of an execute command for launching the data broadcasting application corresponding to the program to the reception apparatus 60
  • the reception apparatus 60 launches the data broadcasting application.
  • an icon for prompting the user to display the data broadcasting application is displayed on the video of the program in a superimposed manner.
  • the broadcasting apparatus 41 transmits the trigger information of an inject event command for specifying the firing of an event to the reception apparatus 60 along the progress of the television program
  • the reception apparatus 60 fires the event in the active data broadcasting application (for example, the display is changed).
  • the broadcasting apparatus 41 transmits the trigger information of a suspend command for suspending the data broadcasting application to the reception apparatus 60 with a predetermined timing
  • the reception apparatus 60 suspends the active data broadcasting application (the associated data is held in the save memory 75 B).
  • the broadcasting apparatus 41 transmits the trigger information of an execute command for specifying the launching (or resuming) the data broadcasting application to the reception apparatus 60
  • the reception apparatus 60 resumes the suspended data broadcasting application.
  • the broadcasting apparatus 41 transmits the trigger information of a terminate command for specifying the termination of the data broadcasting application upon the end of the television program to the reception apparatus 60 , the reception apparatus 60 terminates the active data broadcasting application.
  • FIG. 17 there is shown status transitions of a data broadcasting application in the reception apparatus 60 .
  • a data broadcasting application transitions to any one of four types of states; a stopped state, a ready state, an active state, and a suspended state.
  • a data broadcasting application In the stopped state, a data broadcasting application is not executed and the program data of the data broadcasting application has not been obtained.
  • the ready state the program data of the data broadcasting application has already been obtained but the data broadcasting application is not executed.
  • the active state the data broadcasting application has been launched and is being executed.
  • the suspended state the execution of the data broadcasting application is discontinued and the information indicative of the discontinued state is held in the save memory 75 B.
  • the data broadcasting application transitions to the ready state.
  • the data broadcasting application transitions to the active state.
  • the data broadcasting application transitions to the suspended state.
  • the data broadcasting application transitions to active state.
  • the trigger information of a terminate command has been received with a data broadcasting application transitioned to a ready state, an active state, or a suspended state
  • the data broadcasting application in the ready state, the active state, or the suspended state transitions to a stopped state.
  • the transition to a stopped state may take place not only on the basis of the trigger information of a terminate command, but also by the reception channel switching that is executed upon execution of another data broadcasting application after passing of App_expire_date in trigger information.
  • interrupt processing hereafter referred to as video switching interrupt processing
  • video switching interrupt processing a video switching operation by the user that is executed on the reception apparatus 60 .
  • FIG. 18 there is shown a configuration of a terrestrial digital broadcasting signal that is one example of digital television broadcasting.
  • a physical channel having a band of 6 MHz (or 8 MHz) on the frequency axis is arranged.
  • Each broadcasting organization occupies one physical channel to execute broadcasting. It should be noted that two or more physical channels may also be occupied by a single broadcasting organization.
  • Each physical channel is made up of one or more services (also referred to as logical channels). These services are equivalent to so-called channels that are changed to switch between programs received on the reception apparatus 60 .
  • a list of services included therein and selection information (equivalent to VCT (Virtual Channel Table) in ATSC (Advanced Television Systems Committee, Inc.) or NIT (Network Information Table) in DVB (Digital Video Broadcasting) or ARIB (Association of Radio Industries and Businesses)) indicative of broadcasting frequencies are broadcast.
  • PID of PMT (Program Map Table) of each service is written to PAT (Program Association Table) of each physical channel.
  • Each service (or logical channel) includes one or more ESs.
  • ESs For example, with a program compatible with multiview by which videos from different view points (or camera positions) can be switched, two or more ESs are included. PID of each ES is written to PMT of each service.
  • the video switching operation by the user is any one of the three types, switching 1 through switching 3 , as shown in FIG. 18 .
  • switching 1 is used video ES change switching in the same service.
  • Switching 2 is the switching between video ESs in the same physical channel.
  • Switching 3 is the switching to another physical channel. It should be noted that, with switching 3 , a broadcasting organization of the physical channel of the switching source and a broadcasting organization of the physical channel of the switching destination are the same or different.
  • FIG. 19 is a flowchart indicative of the video switching interrupt processing.
  • This video switching interrupt processing is executed when any one of the above-mentioned video switching operation is executed by the user.
  • step S 31 the control block 68 determines whether a data broadcasting application currently transitioned to the active state exists. If such a data broadcasting application is found existing, then the procedure goes to step S 32 . It should be noted that, if no data broadcasting application transitioned to the active state is found existing, this video switching interrupt processing ends.
  • step S 32 the control block 68 determines, on the basis of the station selection information obtained from television broadcasting signal being received, the type of a video switching operation that has triggered the start of this video switching interrupt processing. To be more specific, the control block 68 determines which of switching 1 through switching 3 shown in FIG. 18 is the type of the switching operation. If the switching operation is found to be switching 3 , the control block 68 further determines whether the broadcasting organization of the physical channel of the switching source is the same as the broadcasting organization of the physical channel of the switching destination.
  • step S 33 the control block 68 determines whether the switching operation type determined in step S 32 is in the scope indicated by App_life_scope stored as related with the active data broadcasting application. If the switching operation type is found to be within App_life_scope, then this video switching interrupt processing ends. Namely, the active data broadcasting application is kept active.
  • step S 34 the control block 68 controls the application engine 74 to terminate the active data broadcasting application.
  • the application engine 74 is terminated the active data broadcasting application, deletes the data associated with the execution of the data broadcasting application from the work memory 75 A and the save memory 75 B, and deletes the program data of the data broadcasting application from the recording block 71 or the cache memory 73 .
  • the video switching interrupt processing has been completed. According to the video switching interrupt processing described above, the active state of a data broadcasting application can be continued or terminated depending on the types of video switching operations.
  • video switching interrupt processing described above is executed for a data broadcasting application in the active state; however, it is also practicable to execute the video switching interrupt processing on a data broadcasting application transitioned to the suspended state.
  • FIG. 20 there is shown an operation scenario with App_life_scope of an active data broadcasting application being ES-bound.
  • the data broadcasting application App-B is launched accordingly. Then, if the user does not execute a video switching operation, the launched data broadcasting application App-B is terminated in accordance with the trigger information of a terminate command transmitted at the termination of program A 1 .
  • FIG. 21 there is shown an operation scenario with App_life_scope of an active data broadcasting application being service-bound.
  • the data broadcasting application App-A When the trigger information of execute command for the data broadcasting application App-A is received while the reception apparatus 60 is receiving and displaying the video ES 1 of multiview-compatible program A 1 being broadcast by service A, the data broadcasting application App-A is launched accordingly. Then, when the user executes a switching operation for switching the video of program A 1 to the video ES 2 , the video switching interrupt processing is executed. In this example, the video switching is in the same service, so that the active data broadcasting application App-A is continuously executed.
  • the video switching interrupt processing is executed again.
  • the video switching is executed in different services, so that the active data broadcasting application App-A is terminated.
  • the data broadcasting application App-B is launched accordingly. Then, if the user does not execute a video switching operation, the launched data broadcasting application App-B is terminated in accordance with the trigger information of a terminate command to be transmitted upon termination of program B 1 .
  • FIG. 22 there is shown an operation scenario to be executed when App_life_scope of an active data broadcasting application is provider-bound.
  • the data broadcasting application App-A When the trigger information of an execute command for the data broadcasting application App-A is received with program A 1 being broadcast in service A received and displayed by the reception apparatus 60 , the data broadcasting application App-A is launched accordingly. Then, if the station selection is changed to program B 1 being broadcast in service B by the same broadcasting organization as that of service A, the video switching interrupt processing is executed. In this example, the video is switched within the same broadcasting organization, the active data broadcasting application App-A is continuously executed.
  • the station selection is changed to program C 1 being broadcast in service C by a different broadcasting organization than that of services A and B, then the video switching interrupt processing is executed again.
  • the video switching is taken place between different broadcasting organizations, so that the active data broadcasting application App-A is terminated.
  • the data broadcasting application App-B is launched accordingly. Then, if the user does not execute a video switching operation, the launched data broadcasting application App-B is terminated in accordance with the trigger information of a terminate command to be transmitted at the termination of program C 1 .
  • FIG. 23 there is shown an operation scenario to be executed when App_life_scope of an active data broadcasting application is un-bound.
  • the data broadcasting application App-A When the trigger information of an execute command for the data broadcasting application App-A is received with program A 1 being broadcast in service A received and displayed by the reception apparatus 60 , the data broadcasting application App-A is launched accordingly. Then, if the station selection is changed to program B 1 being broadcast in service B by a different broadcasting organization than that of service A, the video switching interrupt processing is executed. However, because App_life_scope is un-bound, the active data broadcasting application App-A is continuously executed. Namely, the active data broadcasting application App-A is continuously executed upon reception of the trigger information of the execute command corresponding to this data broadcasting application.
  • the active state of each data broadcasting application can be continued or terminated according to the types of video switching operations. Consequently, even if the user executes a video switching operation, for example, if this video switching operation is taken place within the same service or the same broadcasting organization, a control function can be provided to continuously execute each data broadcasting application.
  • the above-mentioned novel configuration provides another control function for continuously executing data broadcasting applications common to all services (or channels).
  • App_life_scope for each data broadcasting application is included in the trigger information that is an execute command; however, it is also practicable to include App_life_scope in the program itself of each data broadcasting application.
  • the above-mentioned sequence of processing operations may be executed by software as well as hardware.
  • the programs constituting the software are installed in a computer which is built in dedicated hardware equipment or installed, from a program recording media, into a general-purpose personal computer for example in which various programs may be installed for the execution of various functions.
  • FIG. 24 there is shown a block diagram of an exemplary hardware configuration of a computer by which the above-mentioned sequence of processing operations are executed.
  • a CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the bus 104 is connected to an input/output interface 105 .
  • the input/output interface 105 is connected to an input block 106 made up of a keyboard, a mouse, a microphone, and so on, an output block 107 made up of a display monitor, a loudspeaker, and so on, a storage block 108 based on a hard disk unit or a nonvolatile memory, a communication block 109 based on a network interface and so on, and a drive 110 configured to drive a removable media 111 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.
  • the CPU 101 loads a program stored in the storage block 108 into the RAM 103 via the input/output interface 105 and the bus 104 to run the loaded program, thereby executing the above-mentioned sequence of processing operations.
  • program to be run by the computer may execute the processing operations in a time dependent manner in the sequence described herein, in parallel, or as on an on-demand basis.
  • each program may be run by one unit of computer or by two or more units of computers in a distributed manner. Further, each program may be transferred to a remote computer and run thereon.
  • system denotes an entire apparatus configured by a plurality of component units.
US13/071,551 2010-08-30 2011-03-25 Reception apparatus, reception method, transmission apparatus, transmission method, program, and broadcasting system Abandoned US20120050619A1 (en)

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US13/071,551 US20120050619A1 (en) 2010-08-30 2011-03-25 Reception apparatus, reception method, transmission apparatus, transmission method, program, and broadcasting system
EP11821584.7A EP2613525A4 (en) 2010-08-30 2011-08-22 RECEIVING DEVICE, RECEIVING METHOD, SENDING DEVICE, SENDING PROCESS, PROGRAM AND TRANSMISSION SYSTEM
CN201180040453.1A CN103069829B (zh) 2010-08-30 2011-08-22 接收器、接收方法、发送器、发送方法、程序和广播系统
JP2012531798A JP5916614B2 (ja) 2010-08-30 2011-08-22 受信装置、受信方法、送信装置、送信方法、プログラム、および放送システム
MX2013002074A MX2013002074A (es) 2010-08-30 2011-08-22 Receptor, metodo de recepcion, transmisor, metodo de transmision, programa y sistema de radiodifusion.
PCT/JP2011/068836 WO2012029567A1 (ja) 2010-08-30 2011-08-22 受信装置、受信方法、送信装置、送信方法、プログラム、および放送システム
KR1020137004216A KR101885390B1 (ko) 2010-08-30 2011-08-22 수신 장치, 수신 방법, 송신 장치, 송신 방법, 프로그램 및 방송 시스템
CA2806837A CA2806837C (en) 2010-08-30 2011-08-22 Receiver, reception method, transmitter, transmission method, program and broadcasting system
US15/246,021 US10924813B2 (en) 2010-08-30 2016-08-24 Reception apparatus, reception method, transmission apparatus, transmission method, program, and broadcasting system

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US13/071,551 US20120050619A1 (en) 2010-08-30 2011-03-25 Reception apparatus, reception method, transmission apparatus, transmission method, program, and broadcasting system

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