Frame-by-frame color image pickup apparatus

Details Frame-by-frame color image pickup apparatus Frame-by-frame color image pickup apparatus

1997-04-21

1999-12-21

Garber, Wendy

Television

Camera, system and detail

With single image scanning device supplying plural color...

348 70, H04N 904

Patent

active

060056169

ABSTRACT:
In a frame-by-frame color image pickup apparatus, images of light components transmitted through red, green, and blue filters of a rotating filter are introduced to an image pickup device arranged in an optical path with rotating filter. The cells in the image pickup device are grouped into cell blocks, each block made up of four cells arranged in one horizontal row and four vertical columns. The rotational speed of the rotating filter is increased, and the cells within each block selected by switches for reading are fixed when an image is dynamic, a quarter of all the cells are read at one cycle of revolution of the rotating filter, and the remaining cells are interpolated to form one frame image. Color breakup is thus precluded. When an image is still, the cells selected are switched at each cycle of revolution of the rotating filter, and all the cells are read over four cycles of revolution of the rotating filter. Thus, a high resolution color image is obtained. The color image pickup apparatus thus improves virtually a pickup rate from the image pickup device, alleviating color breakup. The still image is presented without degrading its resolution.

REFERENCES:
patent: 4933757 (1990-06-01), Kanno et al.
patent: 4989075 (1991-01-01), Ito
patent: 5748250 (1998-05-01), Markandey et al.

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