Dual display monitor
US4677481A · kind A · utility
12Cited by
7References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1986 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Mar 17, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/45
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A waveform monitor for television has dual video channels displayed simultaneously side-by-side. The two channels are synchronized with each other or with an external sync signal and are input to a multiplexer prior to the display. A microprocessor controls the switching of the multiplexer according to the selection made by an operator. The first channel is displayed during the first half of the horizontal display sweep, and the second channel is displayed during the second half, the horizontal sweep encompassing two horizontal lines of video.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.