Programmable audio/video signal interface
US5018013A · kind A · utility
12Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1989 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Dec 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A switching interface couples a plurality of video and audio signals from different sources to a single pair of audio outputs and a video output via a plurality of switches. A three wire serial data bus supplies the interface, which includes a serial to parallel converter, an address decoder, a data decoder and a control decoder for developing and applying appropriate switching control signals. A plurality of programmable gain amplifiers are provided for controlling the gain characteristics of the output video signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.