Method and apparatus for communicating digital data from a computer system to a display device
US7486283B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1999 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Nov 18, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/126
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus by which digital data is communicated from a computer system to a display device. An analog video signal received from a computer system includes a predetermined data pattern. The analog video signal is sampled to detect the predetermined data pattern. The digital data is then recovered from the detected predetermined data pattern. The predetermined data pattern may occur a predetermined time interval after a horizontal sync pulse or may occur outside of a blanking interval. The display device may respond to the predetermined data pattern by commencing a set-up process, such as, adjusting a sampling rate for sampling the analog video signal; adjusting a sampling phase; or adjusting an orientation of a display image for the display device. Adjusting an orientation may comprise adjusting a sampling start time relative to a horizontal or vertical sync pulse. The predetermined data pattern may be representative of a parameter of the analog video signal, such as, resolution or frequency. The predetermined data pattern may be representative of a beginning of a horizontal blanking interval relative to a horizontal sync pulse for the analog video signal or representati…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.