US4587415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo-detecting device with storage time control
Assignee: Canon Inc
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Filing: 1983-07-20
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Granted: 1986-05-06
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Expires: 2003-07-20
Abstract
Abstract A photo-detecting device employed for photo-detecting a storage type photo-sensor which produces information stored therein according to light inputs on the form of signals integrated in a real time and nondestructive manner. Timing for reading out the output of the photo-detecting apparatus by a control circuit which controls on the basis of the output of the photo-detecting apparatus is to be determined according to the output of the photo-detecting apparatus when the photo-detecting means stores information corresponding to the light inputs. A period of time after storage is started by the photo-detecting means and before the information is read out by the control circuit is determined during the process of storing the information.
Inventors
- 👤 Tokuichi Tsunekawa
- 👤 Shinji Sakai
- 👤 Takao Kinoshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:29
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/70; H04N25/701; H04N25/7013; H04N25/47
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
136 words
A photo-detecting device comprising: (a) photo-detecting means including a storage type photo-sensor arranged to produce information stored therein according to light inputs in the form of signals integrated in a real time and nondestructive manner; (b) driving means for driving said photo-detecting means to begin to store information according to incident light; (c) comparing means for comparing the storage information of said photo-detecting means with reference information, said comparing means being arranged to produce a signal for reading out storage information from said photo-detecting means when said photo-detecting means stores a predetermined amount of information after the beginning of storing by said photo-detecting means; and (d) switching means operatively connected to said photo-detecting means and arranged to permit reading out of the stored information of said photo-detecting means according to the signal from said comparing means.
Claim 2
Dependent Claim
136 words
A photo-detecting device comprising: (a) photo-detecting means including a storage type photo-sensor arranged to produce information stored therein according to light inputs in the form of signals integrated in a real time and nondestructive manner; (b) driving means for driving said photo-detecting means to begin to store information according to incident light; (c) comparing means for comparing the storage information of said photo-detecting means with reference information, said comparing means being arranged to produce a signal for reading out storage information from said photo-detecting means when said photo-detecting means stores a predetermined amount of information after the beginning of storing by said photo-detecting means; and (d) switching means operatively connected to said photo-detecting means and arranged to permit reading out of the stored information of said photo-detecting means according to the signal from said comparing means.
Claim 3
Dependent Claim
38 words
A device according to claim 1, further including: (e) flashing means having a flashing source and means for stopping the flashing light source and arranged to stop flashing in response to the signal produced from said comparing means.
Claim 4
Dependent Claim
27 words
A device according to claim 1, wherein said photo-detecting means is provided with a plurality of storage type photo-sensor for producing a plurality of storage information values.
Claim 5
Dependent Claim
37 words
A device according to claim 3, further including: (f) weighting means for weighting the plurality of storage information values produced from said photo-detecting means, said weighting means being provided between said photo-detecting means and said comparing means.
Claim 6
Dependent Claim
33 words
A device according to claim 3, wherein said comparing means is arranged to simultaneously compare at least two of the storage information values of said photo-detecting means with said predetermined amount of information.
Claim 7
Dependent Claim
33 words
A device according to claim 3, further including: (g) operating means connected operatively with said photo-detecting means for permitting selection of one of the plurality of storage information values of said photo-detecting means.
Claim 8
Dependent Claim
111 words
A photo-detecting device comprising: (a) photo-detecting means including a storage type multi-photo-sensor which produces a plurality of output signals each being integrated in a real time and nondestructive manner; (b) control means for driving said photo-detecting means to integrate for storing information according to incident light and reading out of the stored information of said photo-detecting means so as to provide said each output signal in a serial manner; (c) said control means having means for comparing any one of said output signals with reference information, said comparing means being stored to produce a control signal for reading out storage information when said photo-detecting means stores a predetermined amount of information.
Claim 9
Dependent Claim
111 words
A photo-detecting device comprising: (a) photo-detecting means including a storage type multi-photo-sensor which produces a plurality of output signals each being integrated in a real time and nondestructive manner; (b) control means for driving said photo-detecting means to integrate for storing information according to incident light and reading out of the stored information of said photo-detecting means so as to provide said each output signal in a serial manner; (c) said control means having means for comparing any one of said output signals with reference information, said comparing means being stored to produce a control signal for reading out storage information when said photo-detecting means stores a predetermined amount of information.
Claim 10
Dependent Claim
131 words
A photo-detecting device comprising: (a) photo-detecting means including a storage type multi-photo-sensor which produces a plurality of output signals each being integrated in a real time and nondestructive manner; (b) control means for driving said photo-detecting means to integrate for storing information according to incident light and reading out of the stored information of said photo-detecting means so as to provide said each output signal in a serial manner; (c) said control means having means for comparing one of said output signals with other output signals during the integration when said one of the output signals reaches a predetermined value, said comparing means being arranged to produce a control signal for reading out stored information when at least one of said output signals produced from said multi-photo-sensor reaches a predetermined amount.
Claim 11
Dependent Claim
131 words
A photo-detecting device comprising: (a) photo-detecting means including a storage type multi-photo-sensor which produces a plurality of output signals each being integrated in a real time and nondestructive manner; (b) control means for driving said photo-detecting means to integrate for storing information according to incident light and reading out of the stored information of said photo-detecting means so as to provide said each output signal in a serial manner; (c) said control means having means for comparing one of said output signals with other output signals during the integration when said one of the output signals reaches a predetermined value, said comparing means being arranged to produce a control signal for reading out stored information when at least one of said output signals produced from said multi-photo-sensor reaches a predetermined amount.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |