CCD imager output signal processing using drain output signal an

Details CCD imager output signal processing using drain output signal an CCD imager output signal processing using drain output signal an

1985-09-13

1987-06-30

Rubinson, Gene Z.

Facsimile and static presentation processing

Facsimile

Recording apparatus

35821318, H04N 314

Patent

active

046774904

ABSTRACT:
First and second output signals are taken from a floating element in a CCD charge transfer channel and from the terminal drain diffusion of that CCD charge transfer channel. The floating element is part of an electrometer, and the electrometer response is wide-band sampled at the CCD charge transfer channel clocking rate. Current flow through the terminal drain diffusion is sensed by the input circuit of a low l/f noise transresistance amplifier. Continuous-frequency-spectrum low-noise output signal is generated from the low-frequency components of the transresistance amplifier response and from the high-frequency components of the processed second output signal. Subsequent filtering removes unwanted clock and aliased frequency components.

REFERENCES:
patent: 4330753 (1982-05-01), Davy
patent: 4435730 (1984-03-01), Bendell et al.
patent: 4556851 (1985-12-01), Levine
patent: 4562475 (1985-12-01), Levine
patent: 4567525 (1986-01-01), Endo et al.

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