Method of and apparatus for generating variable length code tabl

Details Method of and apparatus for generating variable length code tabl Method of and apparatus for generating variable length code tabl

1994-04-13

1996-01-30

Young, Brian K.

Coded data generation or conversion

Digital code to digital code converters

Coding by table look-up techniques

341 67, H04N 724

Patent

active

054883679

ABSTRACT:
An apparatus for generating a variable length coding table comprises a compressing circuit for variable-length-code compressing input data and outputting statistic data representing an occurrence probability corresponding to a compressed code value obtained when input data is variable-length-coded, an expanding circuit for expanding data compressed by said compressing circuit, a distortion amount detecting circuit for detecting a distortion amount of output data from the expanding circuit by comparing the output data from the expanding circuit and the input data, and a variable length code table generating circuit for generating a variable length code table on the basis of statistic data outputted from the compressing circuit and a distortion amount outputted from the distortion amount detecting circuit.

REFERENCES:
patent: 4933761 (1990-07-01), Murakami et al.

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