Bi-directional serial video port
US6256686A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1998 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Apr 21, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A bi-directional serial video port coupled to a cable has a cable driver coupled to a cable connector via a D.C. blocking capacitor and a cable impedance matching resistor in series. A receiver is coupled to the cable connector via a decoupling capacitor. When configured as an input port, a control signal causes the output from the cable driver to be low so that the cable impedance matching resistor forms a termination for a cable connected to the cable connector and the receiver passes at serial digital video signal from the cable connector for further processing. Otherwise a serial digital video signal is passed by the cable driver to the cable and the output from the receiver is disregarded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.