Solid state color image sensor using a field-staggered color filter pattern
US5251019A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1992 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Jul 24, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2209/046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sensor 11 for a video camera includes a color filter array 12 of color filter elements covering a like array 14 of image sensing elements. Two fields of a video frame are provided by interlaced transfer of image signals from the sensor 11. The color filter array 12 is configured in relation to the sensor array 14 such that at least 75% of the image sensing elements are luminance-sensing (e.g., green) elements and the rest are chrominance-sensing (e.g., red and blue) elements. Furthermore, the chrominance-sensing elements of the same type (red or blue) are separated in a horizontal direction by at least three luminance-sensing (green) elements. The horizontal sampling frequency of the chrominance-sensing elements is increased by arranging horizontal lines containing the chrominance-sensing elements of the same type in staggered line pairs with the chrominance-sensing elements of one line appearing in different columns of the sensor in relation to chrominance sensing elements of the other line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.