Video signal controller for use with a multi-sync monitor for displaying a plurality of different types of video signals
US5563665A · kind A · utility
Inventor
Key dates
| Filing date | Dec 29, 1993 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Dec 29, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/125
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video signal controller is used with a dual sync monitor of a digital computer. The video signal controller has a tuner to generate conventional television signals. The signals from the tuner and from the computer are supplied to a multiplexer which switches between them and supplies the output signal to a dual sync monitor. The controller has three modes of operation. In a first mode, conventional television signals are displayed on the dual sync monitor. In a second mode, conventional computer signals are displayed on the dual sync monitor. Finally, in a third mode, multi video signals may be displayed to achieve, for example, picture-in-picture for display on the monitor. Finally, a method of processing the television signals for picture-in-picture display which greatly reduces the overhead required by the CPU is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.