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US4829485A
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Method of reading signals in a charge-storage line sensor in which each storage device is sequentially read and then reset during a subsequent dead time interval
Assignee: Canon Inc
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Filing: 1987-07-01
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Granted: 1989-05-09
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Expires: 2007-07-01
Abstract
Abstract A method of reading signals from a plurality of charge-storage devices in a charge-storage line sensor circuit so as to cause a switching device respectively corresponding to the plurality of charge-storage devices to sequentially read the stored signals and to sequentially reset the storage devices during a line read period. Dead time intervals are provided in the line read period between successive device read periods. A resetting operation for each storage device is performed in a dead time interval after the read operation for that storage device is completed.
Inventors
- 👤 Katsunori Hatanaka
- 👤 Naoto Abe
- 👤 Eiji Sakamoto
- 👤 Toshihiro Saika
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:15
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/40056; H04N1/04; H04N1/19; H04N1/191; H04N1/192; H04N1/193; H04N1/1931
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
91 words
A method of reading signals from a plurality of charge-storage devices in a charge-storage line sensor apparatus so as to cause switching means respectively corresponding to the plurality of charge-storage devices to sequentially read the stored signals and to sequentially reset the storage devices during a line read period, wherein dead time intervals are provided in the line read period between successive device read periods, and wherein a resetting operation for each storage device is performed in a dead time interval after the read operation for that storage device is completed.
Claim 2
Independent Claim
91 words
A method of reading signals from a plurality of charge-storage devices in a charge-storage line sensor apparatus so as to cause switching means respectively corresponding to the plurality of charge-storage devices to sequentially read the stored signals and to sequentially reset the storage devices during a line read period, wherein dead time intervals are provided in the line read period between successive device read periods, and wherein a resetting operation for each storage device is performed in a dead time interval after the read operation for that storage device is completed.
Claim 3
Dependent Claim
19 words
A method according to claim 1, wherein said charge storage devices respectively correspond to a plurality of sensor elements.
Claim 4
Independent Claim
79 words
A method of reading and resetting a plurality of charge storage devices, comprising the steps of: reading a first storage device during a first read period; providing a first dead time interval subsequent to said first read period; reading a second storage device during a second read period subsequent to said first dead time interval; providing a second dead time interval subsequent to said second read period; and resetting said first storage device during said second dead time interval.
Claim 5
Independent Claim
79 words
A method of reading and resetting a plurality of charge storage devices, comprising the steps of: reading a first storage device during a first read period; providing a first dead time interval subsequent to said first read period; reading a second storage device during a second read period subsequent to said first dead time interval; providing a second dead time interval subsequent to said second read period; and resetting said first storage device during said second dead time interval.
Claim 6
Dependent Claim
25 words
A method according to claim 3, wherein said step of reading the second storage device includes the step of preliminary resetting said first storage device.
Claim 7
Independent Claim
135 words
A method of reading and resetting a plurality of charge-storage devices, comprising the steps of: reading a first storage device during a first read period; providing a first dead time interval subsequent to said first read period; reading a second storage device during a second read period subsequent to said dead time interval; providing a second dead time interval subsequent to said second read period; reading a third storage device during a third read period subsequent to said second dead time interval; providing a third dead time interval subsequent to said third read period; reading a fourth storage device during a fourth read period subsequent to said third dead time interval; providing a fourth dead time interval subsequent to said fourth read period; and resetting said first storage device during said fourth dead time interval.
Claim 8
Independent Claim
135 words
A method of reading and resetting a plurality of charge-storage devices, comprising the steps of: reading a first storage device during a first read period; providing a first dead time interval subsequent to said first read period; reading a second storage device during a second read period subsequent to said dead time interval; providing a second dead time interval subsequent to said second read period; reading a third storage device during a third read period subsequent to said second dead time interval; providing a third dead time interval subsequent to said third read period; reading a fourth storage device during a fourth read period subsequent to said third dead time interval; providing a fourth dead time interval subsequent to said fourth read period; and resetting said first storage device during said fourth dead time interval.
Claim 9
Dependent Claim
24 words
A method according to claim 5, wherein said step of reading the second storage device includes the step perliminarily resetting said first storage device.
Claim 10
Dependent Claim
29 words
A method according to claim 5, wherein said step of reading the first storage device includes the step of providing a first read pulse during the first read period.
Claim 11
Dependent Claim
26 words
A method according to claim 7, wherein said step of providing the third dead time interval includes the step of applying the first read pulse again.
Claim 12
Dependent Claim
24 words
A method according to claim 8, wherein said step of reading the second storage device includes the step of providing a second read pulse.
Claim 13
Dependent Claim
31 words
A method according to claim 9, wherein said step of resetting said first storage device during said fourth dead time interval includes the step of applying said second read pulse again.
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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) | 1992-05-08 | 1992-11-07 | 1993-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-08 | 1996-11-07 | 1997-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-08 | 2000-11-07 | 2001-05-09 | $7700.00 | Window Closed / Lapsed |