Picture image information band compression and transmission system
US4070694A · kind A · utility
17Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1975 |
| Grant date | Jan 24, 1978 |
| Priority date | — |
| Expiry date | Dec 22, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/417
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A picture image information band compression and transmission process includes the steps of providing one set of three scanning lines making information of the first scanning line of each one set as an estimation scanning line, estimating a picture element to be estimated by four consecutive picture elements, preparing estimated picture image informations, and translating the estimation reference scanning line and two estimated picture image information into run length codes and into mode codes, respectively, and compressing and transmitting the run length codes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.