Dynamically controlled tuner AGC attack point
US7274409B2 · kind B2 · utility
0Cited by
3References
22Claims
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Assignee
Inventor
Key dates
| Filing date | Aug 2, 2004 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Dec 24, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tuner is controlled to manage noise and distortion levels in a video signal. The tuner recovers an RF modulated video signal. A video demodulator provides a baseband video signal from the recovered RF modulated video signal. At least one of signal-to-noise ratio (SNR) and intermodulation distortion (IMD) is determined for the baseband video signal. An AGC attack point of the tuner is dynamically controlled in response to the SNR and/or IMD in order to improve the video quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.