Digital video stream decoding method and apparatus
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United States of America Patent
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Issued Date -
May 19, 2005
app pub date -
Nov 14, 2003
filing date -
Nov 14, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention provides method and apparatus of digital video stream decoding. At least one compressed bit stream and decoded block pixels are saved in a storage device for comparing to a target block to determine whether one of previously decoded and saved blocks can be used to represent a target block. A lossless compression mechanism is applied to reduce the amount of pixel data during storing the decoded block pixels. A lossy method is applied in decoding the video stream if a sum of weighted differences of DCT coefficients between the closet block and a target block is less than a predetermined threshold.
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