Adaptive clamping circuit for video signal receiving device
US5483295A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1994 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | May 12, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adaptive clamping circuit for a video signal processing device includes a control signal generator for generating a control signal capable of controlling a speed of clamping operation in an input signal provided to the video signal processing device, a variable response signal generator for generating a variable response gain signal which enables the input signal to be adaptively clamped by selecting a time constant which is derived from a most significant bit (MSB) and which is adaptively changed in response to the control signal from the control signal generator, and a clamping circuit producing a direct current signal from output of the variable response signal generator and for applying the direct current signal to the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.