Method and apparatus for compressing facsimile transmission data
US4135214A · kind A · utility
16Cited by
2References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1969 |
| Grant date | Jan 16, 1979 |
| Priority date | — |
| Expiry date | Jul 2, 1989 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/415
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus wherein novel adaptive encoding and decoding processes are utilized to reduce the quantity of symbols or descripters required to transmit or store different classes of digital information. The codes used to describe repetitious binary sequences are caused to vary in length in accordance with a well-defined procedure to more efficiently represent the original data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.