Coding arrangement including variable length encoder incorporating a buffer filling control based on averaged block quality, and an associated decoding device

摘要

A coding arrangement which includes a coder for variable- length encoding provided with a quality control to determine the different coding characteristics, a buffer store for receiving the coded information originating from the said coder and for recovering them at an output terminal with a fixed rate thanks to the presence of a regulating circuit. The regulating circuit uses the average quality of packets of information blocks to control a filler circuit which supplies a fill quantity of the coded information. A correction circuit supplies a corrected quality value by correcting the average quality as a function of the fill quantity.