Video signal processing system including analog to digital converter and related method for calibrating analog to digital converter
US7106231B2 · kind B2 · utility
8Cited by
34References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 27, 2004 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Oct 27, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/12
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A video signal processing system capable of adjusting errors and related methods are introduced. The video signal processing system and related calibration methods utilize the characteristic of periodic breaks of video signals to perform various kinds of calibrations including gain calibration of ADC, offset calibration of ADC, dc-level shifting of input signals, and quatization errors spreading by adding analog random signals to input video signals. The required high accuracy in video signal processing systems is achieved in the present invention with the claimed calibration methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.