Multi-frequency displaying device for displaying both television and personal computer video signals
US5610663A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1996 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Jan 17, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a multi-frequency displaying device for displaying both TV and PC video signals. The displaying device comprises a displaying screen for displaying TV or PC video signals, a video signal processing circuit for converting the TV video signals into TV RGB signals and TV sync signals, a sync circuit for converting the TV sync signals or PC sync signals into vertical and horizontal deflection signals, and a display control circuit for displaying the TV RGB signals or PC RGB signals in the display screen in synchronization with the vertical and horizontal deflection signals. The sync circuit comprises a multi-frequency horizontal oscillator for generating clock signals to convert the TV sync signals or PC sync signals with different frequencies into the horizontal deflection signals according to the switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.