High efficiency dynamic color control management system
US9462241B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2011 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Oct 15, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are disclosed that use one or more of advanced signal processing or auxiliary metadata to detect maximum video pixel drive levels required, in advance, for quickly reducing light source power levels to only supply what is absolutely required by the spatial light modulator for that time period. A spatial light modulator is controlled so as to compensate proportionally by increasing its throughput. Thus, the image brightness can be preserved at a lower average source power level resulting in increased lifetime of the light source and lower operating cost on a per-hour basis and/or projection at a desired brightness using a lower cost light source than prior art systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.