Video coding with optimized low complexity variable length codes

Details Video coding with optimized low complexity variable length codes Video coding with optimized low complexity variable length codes

1994-03-18

1996-10-08

Young, Brian K.

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

H03M 740

Patent

active

055635938

ABSTRACT:
A novel group of optimized variable word-length codes for intra coded pictures is disclosed. Hardware complexity and implementation cost is minimized by only optimizing the variable word-length codes for intra coded pictures for a small, but frequently occurring number of discrete cosine transform events. A table of variable word-length codes conforming to the Motion Pictures Expert Group Phase 1 ("MPEG-1") standard may be used for the remaining number of less frequently occurring events. In an illustrative example of the invention, the MPEG-1 variable word-length code table is also used to code non-intra pictures which advantageously allows for totally compatible operation with the MPEG-1 standard.

REFERENCES:
patent: 4534055 (1985-08-01), Iinuma
patent: 5381144 (1995-01-01), Wilson et al.

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