CPC Subgroup
H03M 7/30 Compression (speech analysis-synthesis for redundancy reduction G10L19/00; for image communication H04N); Expansion; Suppression of unnecessary data, e.g. redundancy reduction
Full Title
Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits > Compression (speech analysis-synthesis for redundancy reduction G10L19/00; for image communication H04N); Expansion; Suppression of unnecessary data, e.g. redundancy reduction
15 direct subcodes
Child Classifications
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- H03M 7/40 Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
- H03M 7/46 Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
- H03M 7/50 Conversion to or from non-linear codes, e.g. companding