JP2013009332A5 - - Google Patents

Description

FIG. 23 is a diagram illustrating a control example of an output time difference between broadcast content and communication content by delayStreamPresentation ().
FIG. 23A illustrates the output timing of broadcast content and communication content before calling delayStreamPresentation (). Here, when a positive delay time d (for example, 10) is passed as an argument in delayStreamPresentation (), the output of the first synchronization buffer 404-1 is delayed by the processing in steps S 7 to S 9. As a result, the broadcast content output timing is delayed by 10 as shown in FIG. On the other hand, when a negative delay time d (for example, −10) is passed as an argument in delayStreamPresentation (), the output of the second synchronization buffer 404-2 is delayed by the processing in steps S10 to S12. As a result, the output timing of the communication content is delayed by 10. This is equivalent to delaying the broadcast content output timing by −10 with respect to the communication content output timing, as shown in FIG.

DESCRIPTION OF SYMBOLS 1 ... Broadcast provider apparatus 11 ... Broadcast transmission apparatus 111 ... Broadcast related data management part 112 ... Signal setting part 113 ... Broadcast transmission part 12 ... Broadcasting station server group 13 ... Content management server 14 ... Program management server 15 ... Metadata management server 16 ... Content distribution server 17 ... Broadcasting station service server 18 ... Notification server 2 ... Service provider server group 21 ... Receiver application server 22 ... Service server 23 ... Content distribution server 24 ... Notification server 3 ... Repository server 4 ... Receiver 401 ... broadcast receiving section 402 ... separating section 403 ... clock 404-1 ... first synchronization buffer 404-2 ... second synchronization buffer 405-1 ... first decoder 405-2 ... second decoder 406 ... data broadcast execution section 407 ... Video control unit 408 ... Video display unit 409 ... Audio control unit 410 ... Audio output unit 411 ... Communication input / output Unit 412 ... Application execution control unit 413 ... Presentation control unit 414 ... Operation input unit 415 ... Channel selection unit 416 ... Local information storage unit 417 ... External I / F unit 431 ... Application storage unit 432 ... Application authentication unit 433 ... Application management unit 434 ... application control unit 435 ... application execution unit 436 ... receiver API unit 437 ... terminal cooperation API unit 438 ... resource access control unit 439 ... resource control unit 441 ... command execution unit 442 ... designated delay unit (synchronization control unit)
443 ... Time measuring unit 451 ... Policy data management unit 452 ... Policy data storage unit 453 ... Event interpretation unit 454 ... Policy level collation unit 455 ... Event control unit 456 ... Program policy storage unit 457 ... Policy arbitration unit 458 ... Policy level storage unit 9 …Communication network

Claims (5)

  A synchronization buffer that outputs after storing the communication content;
  A synchronization control unit for buffering the output of the synchronization buffer;
  An instruction execution unit that reads and executes instructions described in the application program;
  With
  The synchronization control unit synchronizes the communication content with the broadcast content by buffering the output of the synchronization buffer when a method for output synchronization is called by the command execution unit.
  A receiver characterized by that. A first synchronization buffer that outputs the broadcast content after storing it;
A second synchronization buffer that outputs after storing the communication content;
A synchronization control unit for buffering the output of either the first synchronization buffer or the second synchronization buffer;
An instruction execution unit that reads and executes instructions described in the application program,
The synchronization control unit, when a method for output synchronized by the instruction execution unit is called, said the cause buffer either the output of the first synchronization buffer or said second synchronization buffer Receiver. The methods may delay a method with an argument indicating the time, the synchronization control unit, delays the one of the outputs of the first synchronization buffer or said second synchronization buffer by a delay time which the argument indicating The receiver according to claim 2, wherein: Time the instruction execution unit method called by the, when a method that involves an argument indicating the delay time, when the argument indicating the delay time is positive, the synchronization control unit, in accordance with the argument And delaying the output of the first synchronization buffer by a time, and when the argument indicating the delay time is a negative number, the synchronization control unit delays the output of the second synchronization buffer by a time corresponding to the argument. The receiver according to claim 3. Said instruction methods invoked by the execution unit, a first argument indicating a delay time, and a second argument that specifies whether to delay any output of the first synchronization buffer or said second synchronization buffer 4. The receiver according to claim 3, wherein, in the case of a method that accompanies, the synchronization control unit delays the output of the buffer indicated by the second argument by a delay time indicated by the first argument.