Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1995-06-07
1996-11-05
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
348242, 348250, G11C 2702, H04N 514
Patent
active
055721559
ABSTRACT:
A CCD signal read-out circuit is operative, upon receipt of a CCD signal outputted from a CCD, to output an output signal from which a reset noise has been removed through correlated double sampling. The CCD signal includes pixel periods each comprising a reset period, a succeeding feed-through period and a further succeeding pixel signal period. The read-out circuit comprises: first and second signal extractors for receiving the CCD signal and extracting a feed-through signal and a pixel signal for the respective pixel periods, respectively; first and second low-pass filters for low-pass filtering the feed-through signal and the pixel signal extracted by the first and second signal extractors, respectively; a signal hold circuit for sampling and holding the feed-through signal filtered by the first low-pass filter; and a differential amplifier for subtracting the pixel signal filtered by the second low-pass filter from a signal sampled and held by a signal hold circuit and outputting the resultant output signal.
REFERENCES:
patent: 4238765 (1980-12-01), Nagumo
patent: 4287441 (1981-09-01), Smith
patent: 4605969 (1986-08-01), Green
patent: 4774565 (1988-09-01), Freeman
patent: 4992876 (1991-03-01), Nishizawa et al.
patent: 5010408 (1991-04-01), Toohey
patent: 5029189 (1991-07-01), Sato et al.
patent: 5034633 (1991-07-01), Stekelenburg
patent: 5177599 (1993-01-01), Takagi et al.
patent: 5276508 (1994-01-01), Boisvert et al.
patent: 5299032 (1994-03-01), Kurita
patent: 5309183 (1994-05-01), Sasaki et al.
patent: 5323233 (1994-06-01), Yamagami et al.
patent: 5329312 (1994-07-01), Boisvert et al.
patent: 5392070 (1995-02-01), Endo et al.
patent: 5396441 (1995-03-01), Ozawa
patent: 5436656 (1995-07-01), Soga et al.
patent: 5471515 (1995-11-01), Fossum et al.
Callahan Timothy P.
Fuji Photo Film Co. , Ltd.
Nu Ton My-Trang
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