Automatic gain control method for receiver and apparatus thereof
US7787848B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2007 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Mar 16, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4263
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A gain control method which includes setting a first initial gain value to a first variable gain amplifier; measuring a first power value corresponding to incoming signals; measuring a second power value corresponding to a target signal; and resetting the first initial gain value according to the first power value and the second power value. Another gain control method is also disclosed, which includes updating a gain value of a first variable gain amplifier by combining an adjustment value with the gain value according to a first tuning direction; obtaining a signal quality indicator; comparing the signal quality indicator with a reference signal quality indicator to generate a comparison result; and referring to the comparison result, further updating the gain value according to the first tuning direction or a second tuning direction opposite to the first tuning direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.