Apparatus and method for controlling white balance of laser display system
US8866857B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2009 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Mar 26, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/73
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to device and method for adjusting white balance in a laser display system, which enables to adjust white balance taking an optical characteristic of a laser beam into account. The device for adjusting white balance in a laser display system, having red, green, and blue laser beam sources, includes a temperature sensing unit for sensing the present temperatures of the laser beam sources, a detecting unit for measuring laser beam output intensity of the laser beam sources, a storing unit for storing reference values on allowable current ranges at different temperatures and laser beam output intensity at different temperatures, an adjusting value generating unit for comparing a measured value of the laser beam output intensity obtained from the detecting unit to the reference values obtained from the storing unit, to generate an adjusting value, a laser beam source driving unit for adjusting the laser beam output intensity of a relevant laser beam source according to a current value within the allowable current range or the adjusting value generated thus, and a control unit for searching the storing unit for the allowable current range corresponding to t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.