Image pickup apparatus with horizontal line interpolation function having three image pickup units shifted in vertical phase from one another
US5532742A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1994 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Mar 22, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2209/049
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an image pickup apparatus with a horizontal line interpolation function having a plurality of solid state image pickup elements, three chrominance signals obtained from the plurality of solid state image pickup elements are shifted in vertical phase from one another, whereby when a horizontal interpolation line is synthesized, in the case where the interpolated video signal is viewed as a whole of three chrominance signals (e.g. when a luminance signal synthesized from G, R, and B signals by matrix operation is considered), deterioration in vertical frequency response characteristic can be reduced, and deterioration in vertical sharpness of an image can be reduced. Further, by combining a frame signal in a pseudo fashion, a high-quality frame still image can be formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.