System and apparatus for transmitting and receiving high definition television pictures over a channel having a comparatively narrow passband
US4977453A · kind A · utility
1Cited by
0References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1988 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Sep 30, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/0152
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In this system a transmission of certain high definition picture elements is provided such that at the receiving side it is possible to recover a picture of the normal definition without it being necessary to use additional circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.