Reference voltage regulation apparatus for an automatic gain control system
US4998106A · kind A · utility
7Cited by
2References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 3, 1989 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Mar 3, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/24
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An automatic gain control system for controlling a gain of an A/D converter automatically by controlling reference voltages of said A/D converter at the time of analog-to-digital conversion of a signal which signal being clamped by a clamp circuit to a clamp level which is set to a center level before entering said A/D converter, comprising a clamp level control circuit for detecting the clamp level from an output of said A/D converter to control the clamp level; a first A/D converter for digital-to-analog converting an output of said clamp level control circuit; an automatic clamp level control system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.