Vertical blanking circuit and bias clamp boost supply
US6369527B1 · kind B1 · utility
3Cited by
1References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 22, 2000 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Jun 22, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/24
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vertical blanking amplifier and bias clamp boost supply in accordance with the present invention uses the amplified vertical blanking signal to generate the boosted high voltage needed for powering the bias clamp circuits. A latch circuit is used to effectively lengthen the duration of the first vertical blanking pulse so as to ensure that the boosted power supply voltage is generated in the short time interval of one or two vertical scan intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.