Solid-state color image pickup apparatus
US4714955A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1986 |
| Grant date | Dec 22, 1987 |
| Priority date | — |
| Expiry date | Nov 5, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color video camera using a solid-state image pickup device having filters of the complementary color system consisting of a filter to transmit the light of all colors, a filter to transmit the yellow light, a filter to transmit the cyan light, and a filter to transmit the green light can obtain color signals having no color aliasing by selecting the conditions of the arithmetic operating processes of the signals corresponding to the respective filters. In these conditions, assuming that the signals corresponding to the four kinds of filters are represented by W, Ye, Cy and G in correspondence to the colors of the respective filters, a red signal and a blue signal are produced by the arithmetic operations represented by the following expressions: EQU R=.alpha.W-.beta.Cy+.gamma.Ye-.delta.G EQU B=.alpha.'W+.beta.'Cy-.gamma.'Ye-.delta.'G wherein the respective arithmetic operational ratios .alpha., .beta., .gamma., .delta., .alpha.', .beta.', .gamma.', and .delta.' are set so as to satisfy the condition of the following expression: EQU .alpha.W+.beta.Cy=.gamma.Ye+.delta.G or .alpha.'W+.gamma.'Ye=.beta.'Cy+.delta.'G. This setting is realized by setting the amplification factors of the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.