Enhancement of images for display on liquid crystal displays
US8866837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2010 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Nov 8, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The enhancement of images to be displayed on a liquid crystal display (LCD) comprises remapping initial pixel values to remapped pixel values in accordance with an equation that raises an initial pixel value to an exponent of a modified gamma value ratio. The modified gamma value ratio is based on a backlight level, an ambient light level and/or other light levels associated with the LCD. The enhancement can selectively increase image brightness in response to a reduction in the backlight level or an increase in the ambient light level, or selectively reduce image brightness in response to a reduction in the ambient light level. The image or a portion of the image can be enhanced. An image portion to be enhanced can be a user-specified bounding box or one or more windows selected by a user or associated with one or more applications running on a computing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.