Facsimile encoding communication system
US4191974A · kind A · utility
16Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1978 |
| Grant date | Mar 4, 1980 |
| Priority date | — |
| Expiry date | Feb 7, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Binary 0's and 1's from picture elements in each line are counted with respect to each mode determined by adjacent picture elements to form symbol patterns determined by both the counts and the information content of a memory. Each pattern is encoded into a code word to be transmitted having a bit number determined by the arrangement of binary symbols included in it. Also the code words can be transmitted on the basis of address numbers of picture elements, starting with the output from a coder associated with a mode having the two-valued signal with the least address number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.