Multi-protocol A/V control port with selective modulation
US7203773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2003 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Oct 6, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/85
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for using a control port in accordance with a variety of different protocols. A main processor communicates a configuration instruction to an interface controller. The interface controller uses the configuration instruction to select a protocol driver and to process signals to a control signal processor. The signals to the control signal processor include an output signal, an input signal, a direction signal, and a modulation enable signal. The control signal processor uses the direction signal to determine whether to output data or input data. The control signal processor uses the modulation enable signal to determine whether to couple a carrier signal on a transition from one digital level to another. The interface controller outputs data in accordance with a selected protocol and processes data input in accordance with the selected protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.