System for nonlinear correction of video signals and method thereof
US6570577B1 · kind B1 · utility
3Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Apr 21, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In accordance with an embodiment of the present invention a digital representation of a YCbCr video signal data stream is received that represents a video image or a series of video images. Received Y data values are linearly transformed and used to provide an RGB signal. The RGB signal is non-linearly adjusted to provide an adjusted RGB signal that enhances the viewed brightness of the data. In a specific embodiment, the non-linear adjusting adjusts the brightness of data near a mid-range of the video image more than other ranges of data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.