Image display apparatus, image signal processing circuit used therein, and method of controlling color saturation of image signal
US7916158B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2006 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Oct 31, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/92
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an image display technique for displaying a high-quality image by an image signal of appropriate color saturation. To this end, in the invention, color histogram information is detected from a color difference signal and average brightness information or brightness histogram information from a brightness signal. Based on the detected color histogram information and average brightness information or brightness histogram information, the demodulation axis of a color difference signal is adjusted, thereby controlling the color saturation (chroma) of an image. This enables display of an image having color intensity suited to the brightness and chroma of an image signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.