Image data circuit for correcting sensitivity differences betwee

Details Image data circuit for correcting sensitivity differences betwee Image data circuit for correcting sensitivity differences betwee

1995-02-09

1997-08-19

Faile, Andrew

Television

Camera, system and detail

Solid-state image sensor

348241, H04N 5335

Patent

active

056593600

ABSTRACT:
An image data circuit compensates sensitivity differences in image detection between a pair of image sensors. The image sensors each include a plurality of charge storage type optical sensing elements. Correction data indicative of sensitivity difference between the image sensors is stored in permanent memory. A clock pulse generator circuit generates clock pulses for counting charge storage periods indicated by output signals from the optical sensing elements. A pair of counter circuits counts the clock pulses and outputs count values corrected with the correction data and corresponding to the charge storage periods. A pair of quantizing circuits converts the output signals to image data based on the corrected count values.

REFERENCES:
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patent: 4335317 (1982-06-01), Grassl
patent: 4959726 (1990-09-01), Miida et al.
patent: 5047861 (1991-09-01), Houchin et al.
patent: 5086343 (1992-02-01), Cook et al.
patent: 5331420 (1994-07-01), Yamano et al.

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