Image signal processing device to emphasize contrast
US8942475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2010 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Aug 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/69
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image signal processing apparatus, which includes a first area input-output characteristics control unit, which controls change of input-output characteristics for every arbitrary area associated with a value of an input luminance signal. The image signal processing apparatus also includes a second area input-output characteristics control unit, which controls change of input-output characteristics for every arbitrary area associated with an output of the first area input-output characteristics control unit, and a chrominance input-output characteristics control unit which controls the change of the input-output characteristics of an input chrominance signal by utilizing the output of the first area input-output characteristics control unit and the output of the second area input-output characteristics control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.