Reduced redundancy facsimile transmission installation
US4228467A · kind A · utility
12Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1978 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Jun 20, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/419
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a reduced redundancy facsimile transmission installation which includes at the transmission end means which form run length words from the binary data analysis of a document. In accordance with the invention, at the transmission end, an array of combinatorial logic circuits (26), preferably of the PLA type, is programmed to transcode run length words into other words, using a truncated Huffman code and, at the receiving end, arrays which are also preferably of the PLA type provide inverse transcoding. Application: facsimile transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.