Pulse width modulated spatial light modulators with offset pulses
US7317464B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 2002 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Sep 7, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/0235
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In some embodiments, a display system includes a spatial light modulator including at least one pixel, a pixel source including pixel data corresponding to the pixel, a memory circuit connected to the pixel source and configured to store a pixel value corresponding to the pixel data, a pulse width modulation circuit connected between the memory circuit and the spatial light modulator, the pulse width modulation circuit adapted to generate a pulse to drive the pixel of the spatial light modulator, wherein a duration of the pulse corresponds to the pixel value and wherein the pulse is offset with respect to a start time and an end time of a refresh cycle of the spatial light modulator, and a control circuit connected to at least one of the memory circuit, the spatial light modulator, and the pulse width modulation circuit. Other embodiments are described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.