Illuminator, projection display device and method for driving the same
US7683857B2 · kind B2 · utility
15Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 24, 2004 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Jan 20, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a projection display device capable of appropriate light control depending on the kind of the image, the ambient brightness and so on, a method for driving the same, and an illuminator used in the same. The light flux of illumination can be adjusted on the basis of image information. The allowable light control range (dimming control) can be optimally set depending on the information (usage information) on the kind of viewed content, the brightness of viewing environment, the gain of a screen and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.