Sequential color display system with spoke synchronous frame rate conversion
US6002452A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1996 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Jun 6, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sequential color display system (10) suited to receive data (20) at different rates without discarding or filtering video data. The mismatch of bandwidths between the input source video data and the output sequential color display is accommodated by retaining a modified synchronous operation. A color wheel (50) having a plurality of segments is utilized whereby the input frame rate in reference to the color wheel rate is always a ratio of integers. Using a digital micromirror device (44) spatial light modulator, no mixing of frame-to-frame bit planes is required during a colored segment. In the preferred embodiment, the ratio of integers is 7-to-6 for a 50 hertz input, such as a system, or a 5-to-6 ratio for a 72 hertz input. The color wheel is maintained at about a 60 hertz rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.