Method and apparatus for asynchronous display of graphic images
US7623126B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2003 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Mar 30, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/008
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display controller in a computer system controls the asynchronous output of graphics display data in a computer system having at least one fixed resolution flat panel display. Fixed panel displays may have problems displaying non-native resolutions particularly at lower resolutions. The controller of the present invention uses a time base converter, horizontal and vertical Discrete Time Oscillators (DTO), and polyphase interpolator, which may be Discrete Cosine Transform (DCT)-based to expand graphics display data asynchronously from native resolution to at least one resolution suitable for display on a fixed resolution panel. Graphics data may also be output asynchronously to a CRT. Time base converter receives frequency related input parameters and generates at least one asynchronous output at the desired output resolution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.