Television – Bandwidth reduction system – Data rate reduction
Patent
1997-12-31
1999-08-31
Le, Vu
Television
Bandwidth reduction system
Data rate reduction
348415, H04N 750
Patent
active
059460431
ABSTRACT:
Video coding efficiency for high motion scenes is improved by adaptively disabling a parameter indicating whether texture and motion data is coded for a macroblock. The COD parameter is disabled when the number of macroblocks with substantially all zero motion and texture data is less than a threshold number. This reduces the number of bits required to code an interframe video image in a video sequence with high motion and large changes from frame to frame. The coded block pattern for chrominance is also used to determine how to perform entropy coding for the coded block pattern for luminance. In interframe blocks, if the chrominance blocks are coded, it is likely that the luminance blocks will be coded as well. The coded block pattern for chrominance, therefore, is used to select the appropriate entropy coding table for the coded block pattern for luminance.
REFERENCES:
patent: 5351086 (1994-09-01), Park
patent: 5448297 (1995-09-01), Alattar et al.
patent: 5465118 (1995-11-01), Hancock et al.
patent: 5870148 (1999-02-01), Lillevold
patent: 5880784 (1999-03-01), Lillevold
"Video Coding for Low Bitrate Communication," Draft Recommendation H.263, International Telecommunication Union, Dec. 1995, 51 pages.
Chen Wei-ge
Lee Ming-Chieh
Le Vu
Microsoft Corporation
LandOfFree
Video coding using adaptive coding of block parameters for coded does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Video coding using adaptive coding of block parameters for coded, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video coding using adaptive coding of block parameters for coded will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2427603