Apparatus and method for transmitting/receiving information in a digital multimedia broadcast service

Apparatus and method for transmitting/receiving information in a digital multimedia broadcast service

  • CN 1,578,422 B
  • Filed: 07/26/2004
  • Issued: 02/13/2013
  • Est. Priority Date: 07/25/2003
  • Status: Active Grant
First Claim
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1. the emitter of a digital multimedia broadcast service comprises:

  • A fast information channel encoder, this fast information channel encoder will comprise that the corresponding table of the program of a modification, the initial object descriptor of a modification and the information on services of a Basic Flow descriptor are encoded to a fast information channel structure, and the initial object descriptor of wherein revising does not comprise that Basic Flow descriptor and initial descriptors label still comprise the information about the number of essential descriptor;

    A preprocessor is in the enterprising line interlacing of audio/video signal and error correction;

    A main service channel encoder arrives main service channel structure with pretreated Signal coding;

    A multiplexer carries out multipath conversion to the information on services of fast information channel coding and the audio/video signal of main service channel coding;

    A modulator, the signal of modulation multipath conversion;

    AndA transmitter unit is converted to the radio frequency band signal to launch with the signal of modulating;

    Wherein, when the signal of described modulation comprised at least two programs, described information on services also comprised the program correlation table of a simplification;

    The program correlation table of wherein said simplification comprises that expression the first field of whether being modified of this program correlation table and expression are used for the 3rd field of sign joint destination packet identifier, and wherein the program correlation table of described simplification also comprises the second field of the number that represents program when at least two programs are included in the armed MPEG2 transport stream;

    The program of wherein said modification is corresponding shows to comprise whether the corresponding table of the program that represents this modification is the first field that consists of the first of the corresponding assembly of showing of whole program, whether corresponding the showing of program that represents this modification is the second field that consists of the last part of the corresponding assembly of showing of whole program, and expression is for the 3rd field of the number of the essential Basic Flow of a program of configuration and the 4th field of expression Basic Flow identifier.

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