Method and apparatus for picture signal enhancement
US4539478A · kind A · utility
17Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1983 |
| Grant date | Sep 3, 1985 |
| Priority date | — |
| Expiry date | Jan 24, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A picture scanning and recording system in which a scanning for "sharp" signals and a scanning for "unsharp" signals are alternately conducted, each in half periods of scanning, by means of a common photoelectric converter. One of these two series of signals is temporarily stored in a memory for synchronous processing with the other series of signals that is just being produced in such a manner that no inconformity is brought about into recording signals of detail contrast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.