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EP0302675A2
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Photoelectric converting apparatus
Assignee: Canon Inc
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Filing: 1988-07-29
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Granted: —
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Expires: 2008-07-29
Abstract
Abstract There is provided a photoelectric converting apparatus having accumulating device to accumulate a signal from a photoelectric converting device(s). This apparatus comprises a first accumulating portion(C1) to accumulate a readout signal of the photoelectric converting device; and a second accumulating portion(C2) to accumulate the remaining signal after the photoelectric converting device was refreshed, wherein the signals of the first and second accumulating portions are superposed and output, thereby obtaining an output signal (HL) in which the remaining signal was eliminated from the readout signal.
Inventors
- 👤 Tadanori Harada
- 👤 Seiji Hashimoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 10:20
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/60; H04N25/62; H04N25/616; H04N25/70; H04N25/76; H04N25/78
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
80 words
A photoelectric converting apparatus having accumulating means for accumulating a signal from a photoelectric converting device, comprising: first accumulating means for accumulating a readout signal from said photoelectric converting device; second accumulating means for accumulating a remaining signal after the photoelectric converting device was refreshed; and control means for superposing signals of said first and second accumulating means and outputting a resultant superposed signal, thereby obtaining an output signal in which said remaining signal was removed from said readout signal.
Claim 2
Dependent Claim
80 words
A photoelectric converting apparatus having accumulating means for accumulating a signal from a photoelectric converting device, comprising: first accumulating means for accumulating a readout signal from said photoelectric converting device; second accumulating means for accumulating a remaining signal after the photoelectric converting device was refreshed; and control means for superposing signals of said first and second accumulating means and outputting a resultant superposed signal, thereby obtaining an output signal in which said remaining signal was removed from said readout signal.
Claim 3
Dependent Claim
15 words
An apparatus according to claim 1, wherein said first and second accumulating means include capacitors.
Claim 4
Dependent Claim
28 words
An apparatus according to claim 1, wherein said control means obtains the output signal in a state in which said first and second accumulating means are serially connected.
Claim 5
Dependent Claim
17 words
An apparatus according to claim 1, wherein said photoelectric converting device can perform a non-destructive readout operation.
Claim 6
Dependent Claim
84 words
A photoelectric converting apparatus comprising: a) a photoelectric converting device for generating a charge signal corresponding to an amount of incident light; b) first accumulating means for reading out and accumulating a signal which was photoelectrically converted by said photoelectric converting device and includes a noise signal; c) second accumulating means for reading out and accumulating the noise signal of the photoelectric converting device; and d) output means for mixing signals of said first and second accumulating means and outputting a resultant mixed signal.
Claim 7
Dependent Claim
84 words
A photoelectric converting apparatus comprising: a) a photoelectric converting device for generating a charge signal corresponding to an amount of incident light; b) first accumulating means for reading out and accumulating a signal which was photoelectrically converted by said photoelectric converting device and includes a noise signal; c) second accumulating means for reading out and accumulating the noise signal of the photoelectric converting device; and d) output means for mixing signals of said first and second accumulating means and outputting a resultant mixed signal.
Claim 8
Dependent Claim
15 words
An apparatus according to claim 5, wherein said first and second accumulating means include capacitors.
Claim 9
Dependent Claim
42 words
An apparatus according to claim 5, wherein said output means mixes the signals of said first and second accumulating means in a state in which the first and second accumulating means are serially connected and then reads out a resultant mixed signal.
Claim 10
Dependent Claim
34 words
An apparatus according to claim 7, furhter including refreshing means for again refreshing the photoelectric converting device after the photoelectrically converted signal including the noise signal was read out of the photoelectric converting device.
Claim 11
Dependent Claim
36 words
. An apparatus according to claim 8, wherein said second accumulating means reads out and accumulates the noise signal of said photoelectric converting device just after the photoelectric converting device was refreshed by said refreshing means.
Claim 12
Dependent Claim
17 words
An apparatus according to claim 5, wherein said photoelectric converting device can perform a non-destructive readout operation.
Claim 13
Dependent Claim
100 words
A photoelectric converting apparatus in which first reset means and first and second accumulating means are connected to an output terminal of a photoelectric converting device, signal transfer means and second reset means are further connected to said output terminal through said second accumulating means, the second accumulating means is set to a reference potential by said second reset means when a first signal is read out of the photoelectric converting device, and the second accumulating means is set into a floating state by the second reset means when a second signal is read out of the photoelectric converting device.
Claim 14
Dependent Claim
100 words
A photoelectric converting apparatus in which first reset means and first and second accumulating means are connected to an output terminal of a photoelectric converting device, signal transfer means and second reset means are further connected to said output terminal through said second accumulating means, the second accumulating means is set to a reference potential by said second reset means when a first signal is read out of the photoelectric converting device, and the second accumulating means is set into a floating state by the second reset means when a second signal is read out of the photoelectric converting device.
Claim 15
Dependent Claim
43 words
An apparatus according to claim 11, wherein said signal transfer means has third accumulating means and a signal which is obtained by superposing the first and second signals accumulated in said first and second accumulating means is accumulated into said third accumulating means.
References Cited (Backward Citations)
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