Image pickup apparatus for receiving light and converting to an

Details Image pickup apparatus for receiving light and converting to an Image pickup apparatus for receiving light and converting to an

1991-07-26

1992-10-13

Coles, Sr., Edward L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 98, H04N 904

Patent

active

051555859

ABSTRACT:
An image pickup apparatus receives light on image sensing elements and generates an electrical signal corresponding to integrals of luminances thereon with respect to time and outputs the electrical signal to an A/D converter. A disk shaped color filter unit, having red, green, and blue color filters with the same sectorial shape, is rotated so the color filters are respectively disposed on the optical path of light falling on the image sensing elements. A control unit monitors the magnitude of a digital signal converted by the A/D converter and controls the filter moving unit based on the magnitude of digital signal so that the color filter is rotated at a higher rotating speed when the illumination of the environment is higher. Further, the control unit controls the color filter moving unit so that the color filter is rotated at a first speed n, when a color image signal generating mode is set, and controls the color filter moving unit so that the color filter is moved at a second speed 3n times the first speed when a black-and-white image signal generating mode is set.

REFERENCES:
patent: 4523224 (1985-06-01), Longacre, Jr.
patent: 4587564 (1986-05-01), Dischert
patent: 4862253 (1989-08-01), English et al.
patent: 4909600 (1990-03-01), Ciarlei et al.
patent: 4926247 (1990-05-01), Nagasaki et al.
patent: 4998163 (1991-03-01), Salvati
patent: 5046162 (1991-09-01), Ishikawa et al.

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