Self-calibrating video digital to analog converter
US6348886B1 · kind B1 · utility
16Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2000 |
| Grant date | Feb 19, 2002 |
| Priority date | — |
| Expiry date | Jul 19, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/66
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A video DAC uses a charge pump to maintain a constant peak to peak amplitude within power supply variations over process and temperature, rather than an external reference signal or a band gap reference. The charge pump performs calibration at full scale output during horizontal sync levels or vertical sync pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.