Circuit for improving the frequency characteristic of a color television signal
US4223342A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1978 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Dec 5, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/77
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
For improving the frequency characteristic of a color television signal, particularly one in which the chrominance component thereof is provided with a bandwidth substantially narrower than that of the luminance component, the luminance component is used to generate a control signal which is proportional to the lack of registration between low and high frequency portions of the luminance component spectrum, and the control signal thus obtained selectively increases and decreases a delay applied to the relatively narrow-bandwidth chrominance component to substantially align its excursions with the excursions of the relatively wide bandwidth luminance component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.