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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H04N 1/417

using predictive or differential encoding

Introduced: January 1985

Full Title

Full titles differ between systems:

IPC:

Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof > Bandwidth or redundancy reduction > for the transmission or reproduction of two-tone pictures, e.g. black and white pictures > Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information > using predictive or differential encoding

CPC:

Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof > Bandwidth or redundancy reduction (by scanning H04N1/17 ) > for the transmission or reproduction of two-tone pictures, e.g. black and white pictures > Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information > using predictive or differential encoding

Of 3 combined children, 0 exist in both systems.

3 codes are CPC-only extensions.

Child Classifications

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