Color filter array and its color interpolation apparatus
US6346969B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1997 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Dec 30, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2209/046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color filter array and its signal process circuit in which vertical interpolation process is not needed, which can be applied to the field of image signal input and signal process such as video camera, digital camera and color scanner, and color copier which process image signal. The color filter array is constituted such that the number of green color filter becomes double of those of red and blue color filter respectively in order to make human color recognition easy, and that the red and blue color filters are placed every four pixels and green color filter is placed every other pixel, such as a filter pattern consisting of R-G-B-G, G-R-G-R and B-G-R-G filter groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.