HVQ compression with an error term

摘要

Improving the accuracy of a lossy compressor (10) by decompressing the compressed input word and comparing the result to the original word. An error term is produced, and the total compressor output becomes the output of the lossy compressor and the error term. The compression can be improved by limiting the error term to a number of most significant bits, and by losslessly compressing both terms. An HVQ compressor can be used as the lossy compressor. <IMAGE>