System and method for clock offset detection
US8446531B2 · kind B2 · utility
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12References
16Claims
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Key dates
| Filing date | Jul 9, 2008 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Nov 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for detecting a sampling clock offset of an analog-to-digital converter used to digitize an analog image signal. A method comprises buffering samples of an analog image signal, computing a value of an autocorrelation function using the buffered samples and a delayed version of the buffered samples, and repeating the computing a value for delays in a range of delays. The method also comprises computing a sampling frequency offset from the values of the autocorrelation function and changing a sampling frequency using the sampling frequency offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.