Method and apparatus for calibrating multi-element sensors

Details Method and apparatus for calibrating multi-element sensors Method and apparatus for calibrating multi-element sensors

1997-07-01

1999-10-05

Coles, Edward L.

Facsimile and static presentation processing

Facsimile

Facsimile measuring, testing, or calibrating

358482, H04N 100, H04N 104

Patent

active

059633387

ABSTRACT:
A method and apparatus for subjecting multi-element sensing apparatuses to electric calibration whenever necessary, regardless of whether the subject under being photographed is well or poorly lit. The apparatus comprises a photoreceptor section having n photosensors, a transfer gate placed along the photoreceptor section, a register for temporarily storing image signals, an input drain provided at one end of the register, a CCD-driving circuit for adjusting timing of respective driving pulses, and a circuit for generating electric calibration signals. The input drain is ON/OFF controlled to input electric calibration signals while image signals are being outputted when the transfer gate is OFF, and the CCD-driving circuit adjusts timing of respective driving pulses so that zero-level signals and the electric calibration signals are simultaneously outputted after the image signals.

REFERENCES:
patent: 5317423 (1994-05-01), Harada
patent: 5337163 (1994-08-01), Kawamoto et al.
patent: 5473660 (1995-12-01), Bastiaens et al.

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