Image pickup apparatus generating a dot-sequential luminance sig

Details Image pickup apparatus generating a dot-sequential luminance sig Image pickup apparatus generating a dot-sequential luminance sig

1986-10-30

1988-06-14

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 29, 358 43, H04N 9077, H04N 907, H04N 973

Patent

active

047515678

ABSTRACT:
An image pickup apparatus includes an image pickup device and a plurality of color filter groups associated with the device. Each of the filter groups has a different transmission characteristic. The pickup device generates an output signal representative of incident radiation. A color separating circuit separates color signals corresponding to the color filter groups from the output generated by the image pickup device. A control device adjusts the level of at least one of the signals separated by the color separation circuit and a dot-sequential signal forming circuit converts the signals, the levels of which are adjusted by the control device into a dot-sequential signal. The dot-sequential signal so formed is the result of separated color signals and benefits from less stringent frequency requirements for various switching, filtering, and gain control elements. Each of the plurality of color filter groups comprises a plurality of filter cells and the cells are repeatingly arranged at a predetermined pitch. The color separation device also includes sample and hold circuits for sampling and holding each of the color signals on the basis of the arrangement of the filter cells.

REFERENCES:
patent: 4106056 (1978-08-01), Nagumo et al.
patent: 4183052 (1980-01-01), Yamanaka et al.
patent: 4338625 (1982-07-01), Yamanaka
patent: 4355327 (1982-10-01), Nagumo et al.
patent: 4473839 (1984-09-01), Noda
patent: 4496967 (1985-01-01), Sase et al.
patent: 4553159 (1985-11-01), Moraillon

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