Display device and method for providing optical feedback
US7551158B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2005 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Jan 16, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device for providing optical feedback includes light sources, each for emitting light in a different respective wavelength range, electro-optical elements defining pixels of an image, each for selectively passing light in one of the wavelength ranges and a sensor for measuring the intensity of light output from a portion of the electro-optical elements. To provide the optical feedback, a controller activates one of the light sources, alters those electro-optical elements within the portion of the electro-optical elements that are arranged to pass light in the wavelength range of a select one of the light source and reads out the measured intensity from the sensor. Based on the measured light intensity, the controller adjusts an illumination parameter associated with the select light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.