STATISTIC MULTIPLEXER FOR MULTIPLEX CHANNEL IMAGE COMPRESSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a multiplex channel image compression system that compresses image data by using plural coders. SOLUTION: A coding level command is given to respective coders for designating quality level. Coded image data generated by the coders, in response to the coding level command, are multiplexed for transmission by a multiplexer 26 and become decoded signals. The coding level command is used to adjust the quality level so as to maintain stored data within the range of a processing capability of a communication channel 48, in response to the storage amount of data consisting of the decoded signal. The coding level command can designates an identical general-purpose coding level to all the coders, but each coder derives a local coding level from the general-purpose coding level and is able to provide different coding qualities. Decoders 30-46 are installed to decode the image from compressed image data.