Background subtractor using CCD techniques

Details Background subtractor using CCD techniques Background subtractor using CCD techniques

1978-12-21

1981-04-21

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307221D, 307353, 328162, 357 24, H03K 5153

Patent

active

042635225

ABSTRACT:
A CCD background subtractor having a first charge storage arrangement for detecting, during periodic sampling intervals, the peak value of an applied input signal, and a second charge storage arrangement into which charge representative of said peak value is periodically transferred and held. A third charge storage arrangement also receives the applied input signal and is controlled as a function of the charge held in the second charge storage arrangement such that the output signal from the third charge storage arrangement is representative of the difference between the applied input signal and the peak value thereof sampled during a prior sampling interval.

REFERENCES:
patent: 3876952 (1975-04-01), Weimer
patent: 4071775 (1978-01-01), Hewes
patent: 4139782 (1979-02-01), Ablassmeier

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