Apparatus for driving image pick-up device including smear preve

Details Apparatus for driving image pick-up device including smear preve Apparatus for driving image pick-up device including smear preve

1993-07-07

1995-05-16

Razavi, Michael T.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348363, H04N 5238

Patent

active

054165172

ABSTRACT:
An apparatus for driving an image pick-up device is provided with arrays of photoelectric elements, and vertical transfer portions are located adjacent to the arrays of photoelectric elements. A photographing lens for forming a focused image of an object to be photographed on the light receiving surface of the image pick-up device, a release device for performing a release operation, and a diaphragm device having a diaphragm for adjusting the quantity of light incident upon said light-receiving surface of the image pick-up device are provided. The diaphragm is normally fully closed but when a release operation is commenced, the diaphragm device opens the diaphragm to a predetermined diaphragm value, and fully closes the diaphragm in accordance with a predetermined stop-down speed after a completion of the exposure. A smear detecting mechanism is provided for reading electric charges accumulated in the vertical transfer portions when the diaphragm is opened to the predetermined diaphragm value, after the commencement of said release operation, and for adding the electric charges for every vertical transfer portion to compare the level of the added electrical charges with a predetermined level. A control mechanism is also provided for changing the stop-down speed of the diaphragm depending on the compared level of the added electrical charges.

REFERENCES:
patent: 4516172 (1985-05-01), Miyata et al.
patent: 4599657 (1986-07-01), Kinoshita et al.
patent: 4622596 (1986-11-01), Suga et al.
patent: 4689686 (1987-08-01), Hashimoto et al.
patent: 4714963 (1987-12-01), Vogel
patent: 4734777 (1988-03-01), Okino et al.
patent: 4742395 (1988-05-01), Nagai et al.
patent: 4782394 (1988-11-01), Hieda et al.
patent: 4783702 (1988-11-01), Sone et al.
patent: 4799108 (1989-01-01), Gerner
patent: 4800435 (1989-01-01), Ikeda et al.
patent: 4805024 (1989-02-01), Suzuki et al.
patent: 4868667 (1989-09-01), Tani et al.
patent: 4881127 (1989-11-01), Isoguchi et al.
patent: 4884142 (1989-11-01), Suzuki
patent: 4908709 (1990-03-01), Inuiya et al.
patent: 4912560 (1990-03-01), Osawa et al.
patent: 4918533 (1990-04-01), Date et al.
patent: 4918538 (1990-04-01), Saito et al.
patent: 4977584 (1990-12-01), Kohno et al.
patent: 4980769 (1990-12-01), Inuiya et al.
patent: 4985776 (1991-01-01), Taniji
patent: 5031048 (1991-07-01), Naruto et al.
patent: 5040070 (1991-08-01), Higashitsutsumi et al.
patent: 5187569 (1993-02-01), Tani
Horii, Kenju, "Half-Inch CCDs: Meeting Challenges," Journal of Electric Engineering, No. 252, Dec. 1987 Tokyo, Japan, pp. 44-46.
"New CCD Camera Variance from EEV", Electronic Engineering, Jun. 1988, pp. 9-14.
United Kingdom Search Report.

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