Method and apparatus for bidirectional data transfer between a digital display and a computer
US6738417B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1999 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Sep 9, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2370/045
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A new scheme to transfer bidirectional data streams between a digital display and a computer is disclosed. This bidirectional data transfer can make several I/O devices attach to a display. Existing digital display interfaces are usually unidirectional from a computing to a display. Due to the nature of the existing clocking scheme, backward data transfer from the display side to the computer requires a backward clock. This invention discloses a scheme to send data bidirectionally without sending the additional backward clock. This invention also discloses a scheme to tolerate jitters from the clock source. With this approach, this new interface can make a digital display an I/O concentrator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.