Adaptive variable length coding of digital video

Details Adaptive variable length coding of digital video Adaptive variable length coding of digital video

2005-04-12

2005-04-12

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

C341S065000

Reexamination Certificate

active

06879268

ABSTRACT:
The invention relates to a method of adaptive variable length coding in which a set of data symbols comprising a certain first number of data symbols having a first value and a certain second number of data symbols having values other than the first value are represented by variable length codewords. According to the invention, at least one characteristic of the variable length coding applied to the data symbols is adapted according to the second number of data symbols which have values other than the first value. The invention also relates to a corresponding method of variable length decoding, as well as an encoder and decoder which implement the variable length coding and decoding methods according to the invention.

REFERENCES:
patent: 5668547 (1997-09-01), Lee
patent: 5754696 (1998-05-01), Miyashita et al.
patent: RE37507 (2002-01-01), Jung
patent: 6412112 (2002-06-01), Barrett et al.
ITU-Telecommunications Standardization Sector, Doc. VCEG, “H.26L Test Model Long Term No. 8 (TML-8) draft 0”, Section 2.3 G. Bjontegaard, 2001.
“Image and Video Compression Standards”, Bhaskaran et al., ISBN 0-7923-9952-8, Section 2.9, 1997.
“Information Technology—Digital Compression and Coding of Continuous-Tone Still Images—Requirements and Guidelines”, ITU-T Recommendation T.81, 1992.

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