Signal conversion apparatus and method, and program and recording medium
US9578296B2 · kind B2 · utility
2Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2014 |
| Grant date | Feb 21, 2017 |
| Priority date | — |
| Expiry date | Feb 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A maximum value Yimax and a minimum value Yimin of input pixel data Ri, Gi, Bi for each pixel are determined. A saturation adjustment value X is determined using a function g(Yimax, Yimin), white pixel data Wo is determined using a function f(Yimin), and these are used to determine output pixel data Ro, Go, Bo. Even the saturation represented by RGB three-color data is high, conversion to RGBW four-color data with improved brightness can be made, without changing the hue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.