Bipolar operation of light-modulating array
US6804038B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2002 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Sep 1, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/7458
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
One embodiment disclosed comprises a method for bipolar operation of a light-modulating array. The method includes driving light-modulating elements of the array in a first polarity, switching polarities from the first polarity to a second polarity, driving the light-modulating elements of the array in a second polarity, switching polarities from the second polarity to the first polarity, and repeating the steps. Another embodiment disclosed comprises an apparatus utilizing a light-modulating array. The apparatus includes a first look-up table storing data for operating elements the light-modulating array in a first polarity mode, and a second look-up table storing data for operating the elements of the light-modulating array in a second polarity mode. The apparatus also includes a drive system for driving the elements of the light-modulating array. The drive system is coupled to both the first and second look-up tables.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.