Circuit arrangement for processing video components
US4942457A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1989 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | May 25, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/641
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video signal processor as for generating a picture-in-picture signal, generates respective analog luminance components and first and second analog chrominance components. In order to reduce the system hardware and processing speed, multiplexing circuitry subsamples the luminance and chrominance components on a field basis to provide alternating fields of only luminance and only chrominance signal. The multiplexing circuitry further subsamples the chrominance components by providing groups of horizontal lines of only the first chrominance component alternating with groups of horizontal lines of only the second chrominance component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.