Video coder having scalar dependent variable length coder

Details Video coder having scalar dependent variable length coder Video coder having scalar dependent variable length coder

1997-07-24

1999-11-30

Tung, Bryan

Television

Bandwidth reduction system

Data rate reduction

H04N 724

Patent

active

059951486

ABSTRACT:
Method and apparatus for generating variable length coded for video encoding. A plurality of memory tables contain variable length codes tailored to patterns of input video information that is likely to be input to the variable length encoder. The patterns are determined in large part by a value of a quantizer used in video encoding. A separate memory table containing separate variable length codes is established for each of a plurality of quantization parameter values. The quantization parameter is input to the encoder to enable one of the memory tables and the video information is input to the enabled table to generate the variable length code.

REFERENCES:
patent: 5455578 (1995-10-01), Bhandari
patent: 5559557 (1996-09-01), Kato
patent: 5699119 (1997-12-01), Chung
"Intra Prediction (T0/T10) and DC/Ac Prediction Results ; International Organisation for Standardisation Coding of Moving Pictures and Associated Audio Information" ISO/IEC JTC1/SC29/WG11 MPEG96/0939 Jul. 1996.
"Altered Sections of H.263 for Draft Test of H.263+"; ITU-Telecommunications Standardization SectorDocument: ITU-LBC-96-358R1 Study Group 15, Jul. 1996.

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