Selectively updating pulse width modulated waveforms while driving pixels
US7145581B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 2002 |
| Grant date | Dec 5, 2006 |
| Priority date | — |
| Expiry date | Jan 1, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0842
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a display refresh period, an array of display elements (e.g., pixels) forming a display device (e.g., a spatial light modulator) may be driven using selectively updated pulse width modulated waveforms. Decoupling of digital storage, storing display data that generates updated pulse width modulated waveforms, from the array of pixels may provide decoupling of pixel data and pulse width modulated waveform updates. In one embodiment, an update value of pixel data is provided to a display element. Using once the update value, a modulated signal may be generated for a display refresh period to drive the display element, significantly reducing updates required for the pixel data at the display element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.