CCD output signal processing circuit for use in an image pick-up

Details CCD output signal processing circuit for use in an image pick-up CCD output signal processing circuit for use in an image pick-up

1985-08-07

1987-07-28

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Charge transfer device

Particular input or output means

333165, 307353, H03H 1706, G11C 1928, G11C 2702

Patent

active

046835806

ABSTRACT:
A CCD output signal generating circuit includes a CCD type charge transfer device for transferring and outputting signal charges in response to the drive signal of a frequency f.sub.c, an output circuit for generating an output signal corresponding to the output signal charges from the CCD type charge transfer device, and a correlated double sampling circuit. The CDD output signal generating circuit also has a low-pass filter circuit which, having a cut-off frequency set within a range of 2.5f.sub.c to 4f.sub.c, and being connected between the output circuit and the correlated double sampling circuit, acts to filter an output signal from the output circuit before supplying the signal to the correlated double sampling circuit.

REFERENCES:
patent: 4287441 (1981-09-01), Smith
patent: 4293831 (1981-10-01), Lueder
patent: 4309678 (1982-01-01), Picquendar
patent: 4488129 (1984-12-01), Gonin et al.
patent: 4513260 (1985-04-01), Ragan
patent: 4528684 (1985-07-01), Iida et al.
"Stable Output Circuit for a Dynamic Shift Register", IBM Technical Disclosure Bulletin, vol. 18, No. 2, Jul. 1985, pp. 459-460.

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