Method and architecture for converting MPE G-2 4:2:2-profile bitstreams into main-profile bitstreams

Method and architecture for converting MPE G-2 4:2:2-profile bitstreams into main-profile bitstreams

  • CN 1,347,620 A
  • Filed: 02/16/2000
  • Published: 05/01/2002
  • Est. Priority Date: 02/18/1999
  • Status: Abandoned Application
First Claim
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1. , a kind of forward transposition circulation that will have one first form changes the method for the rear conversion bit stream with one second form into, comprises step:

  • To major general'"'"'s forward transposition stream partial decompressing in a pixel domain, to recover the chroma data in it;

    Flow the quantization matrix data that recovery is associated with brightness data from this forward transposition;

    And recompression is with should be in the data of the chroma data that recovers;

    This recompression comprises according to the luminance quantization matrix that recovers, and will correspond to the data re-quantization of the chroma data of recovery, changes bit stream after this to be provided.

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