Circuitry for nonlinear processing of reference white on color image
US4127868A · kind A · utility
5Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1977 |
| Grant date | Nov 28, 1978 |
| Priority date | — |
| Expiry date | Jan 24, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/73
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A picture quality improving apparatus for a color television receiver in which red, green and blue system nonlinearities n.sub.R, n.sub.G and n.sub.B are similar to each other. The picture quality is improved by so adjusting the values of the three cathode resistances connected to the three cathodes of the picture tube to satisfy the relation n.sub.B >n.sub.G .gtoreq.n.sub.R.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.