Dynamic illumination control for laser projection display
US8330870B2 · kind B2 · utility
5Cited by
21References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2009 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Feb 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for improving image contrast for a display apparatus obtains a frame of image data having one or more code values for each pixel in the frame of image data, analyzes the frame of image data to identify a distribution of dark regions therein. The method further adjusts at least one of the one or more code values for the frame of image data according to the distribution of dark regions in the frame of image data and attenuates a brightness level available for the image frame according to the distribution of dark regions in the frame of image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.