Apparatus for converting gray scale and method for the same
US7773264B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2007 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Jan 2, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0428
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention discloses an apparatus for converting gray scale. The apparatus includes a receiving module, an encoding module, and a decoding module. The receiving module is used for receiving an input image, wherein the input image has an N-bit first gray level. The encoding module is used for selectively calculating a first color level based on both M higher bits and T lower bits of the first gray level, and then calculating a second color level and a third color level based on M higher bits of the first gray level. The decoding module is used for converting the first, second, and third color levels into an N-bit second gray level by using a gray scale conversion formula.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.