Color signal generation circuit
US6292231A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1997 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Dec 24, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N17/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A reference signal having either twice or four times the frequency of a color burst signal (2fsc or 4fsc) is divided into a plurality of divided signals, each having the same frequency as that of the color burst signal, or an fsc frequency. In addition, a reference signal is delayed by a predetermined amount to thereby generate a delay signal. One of the divided signals is output in synchronism with this delay signal as a first divided signal having a predetermined delay. When this first divided signal is used as a color burst signal, the remaining divided signals resultantly all have phases shifted by a predetermined amount with respect to the color burst signal. With this arrangement, some of the divided signals can be used intact as a color signal, while the others may also be used after being delayed by a predetermined amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.