Voltage controlled high frequency equalization
US5194827A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1991 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Apr 10, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G5/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for equalizing high frequency video signals is disclosed. A video signal to be equalized is received at an input terminal of a network and an equalized video signal is provided from an output of an operational amplifier to an output terminal of the network. The equalized video signal is fedback to one input of the operational amplifier. The video signal to be equalized is coupled to another input of the operational amplifier and is also coupled to respective ones of a plurality of alterable circuit elements such as varactor diodes, which function to mitigate distortions to the frequency response characteristic of the video signal to be equalized by cancelling the effect thereon by the video signal to be equalized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.