Television – Camera – system and detail – With single image scanning device supplying plural color...
Patent
1993-01-11
1995-04-11
Groody, James J.
Television
Camera, system and detail
With single image scanning device supplying plural color...
348270, 348317, H04N 904
Patent
active
054063310
ABSTRACT:
A method of operation for a digital color camera permits the rapid accumulation of three basic color images that can be combined into a full-color reproduction. The scene to be captured is focused through a blue filter onto the active array of a conventional frame transfer CCD. The data representing the received image is condensed, by summing or bining, to reduce the number of pixels representing the image, and is transferred to the storage array of the CCD where it occupies one-half of the available storage area. The first exposure of the active array is terminated by a filter/shutter mechanism that also serves to replace the blue filter with a red one. The scene is then focused on the active array through the red filter and the exposure again terminated by the filter/shutter assembly. The data representing this image are then summed or bined to reduce the number of pixels representing the image and the data is transferred to the unoccupied one-half of the storage array. The scene is then focused through a green filter onto the active array and the exposure is terminated by an opaque section of the filter/shutter mechanism. The data representing this image is not summed or bined, and the active area of the CCD serves as a storage area for the image. After the data in the storage area has been transferred to the digitizing and processing circuits, the data in the active area is transferred with full resolution to the now empty storage area. Advantage is taken of certain characteristics of the human eye that permit resolution to be sacrificed in certain color segments while retaining overall acceptable image quality.
REFERENCES:
patent: 4404585 (1983-09-01), Hjortzberg
patent: 4667229 (1987-05-01), Cooper et al.
patent: 4714683 (1987-12-01), Fujimori et al.
patent: 4769693 (1988-09-01), Kato
Barrett E. T.
Groody James J.
Lee Michael H.
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