Automatic gain control device and method
US7796713B2 · kind B2 · utility
4Cited by
1References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2004 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Jun 14, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/426
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An automatic gain control device in a digital broadcast receiver is provided. The device is constructed to include an AGC for receiving an input signal and a predetermined power reference value to thereby obtain a gain error value, determining one of a plurality of operational areas according to a received AGC step control signal, and generating an RF gain control signal and an IF gain control signal according to the gain error value; and a lock detector for receiving the gain error value and the predetermined power reference value and thereby generating the AGC step control signal and an AGC lock/unlock signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.