Image presentation device with light source controller
US7377657B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2005 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Jun 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image presentation device (100) includes a set of color light sources (122, 124, 126) and a micro-display panel (150) capable of operating in both image processing and non-image processing modes. A sensor (170) is coupled to the micro-display device (150) to convert light received from the light source (122, 124, 126) into a signal value representing the output from the light source (122, 124, 126). A controller (110), responsive to the signal value, selectively and/or collectively varies the input to each of the individual light sources (122, 124, 125) to provide for consistent operating performance over the life of the product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.