System and method for improving the signal to noise ratio of a C

Details System and method for improving the signal to noise ratio of a C System and method for improving the signal to noise ratio of a C

1994-02-14

1995-12-26

Razavi, Michael T.

Television

Camera, system and detail

Solid-state image sensor

348312, 348362, H04N 314

Patent

active

054792070

ABSTRACT:
A system and method for improving the signal to noise ratio of a CCD sensor within an optical scanner varies the exposure time of the CCD sensor. Exposure time is varied by clocking the CCD sensor a number of times equal to the number of pixels in the CCD sensor plus an additional number of clock cycles to create a delay. The additional exposure time maximizes the magnitudes of the charges produced by the CCD sensor. The required delay is computed during a pre-scan calibration step.

REFERENCES:
patent: 4701626 (1987-10-01), Ishizaki et al.
patent: 4926041 (1990-05-01), Boyd
patent: 5182658 (1993-01-01), Ishizaki et al.
patent: 5239387 (1993-08-01), Stein et al.
patent: 5337163 (1994-08-01), Kawamoto et al.

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