Color signal processing circuit with residue phase error correction
US5130787A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1990 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Apr 25, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/87
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color signal processing circuit which includes a conversion unit for converting two color difference signals, which are equivalent to color difference signals obtained by color demodulation of a color signal by using two color difference axes intersecting perpendicularly to each other. The color difference signals are converted into a color amplitude signal corresponding to the amplitude of the color signal and a color phase signal corresponding to the phase of the color signal. Also included is a signal processing unit for processing at least either of the color amplitude signal and the color phase signal. Thus, it is easy to obtain a color difference signal in which a residual phase error included in the color signal is eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.