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US4853786A
Expired / Lapsed
US
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CSD image sensor and method of decreasing smear by the user thereof
Assignee: Mitsubishi Electric Corp
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Filing: 1987-11-12
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Granted: 1989-08-01
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Expires: 2007-11-12
Abstract
Abstract In a solid image pickup element provided with photoelectric conversion elements arrayed in two dimensions, a scanning circuit for selecting each photoelectric conversion element to scan, a vertical transfer means and a horizontal transfer means for transferring a charge of the selected photoelectric conversion element vertically and horizontally respectively, a storage part for storing the transferred charge temporarily, the improvement comprising a driving means for transferring the charge from said photoelectric conversion elements to the storage part during a horizontal blanking period.
Inventors
- 👤 Masao Yamawaki
- 👤 Hiroshi Kawashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:40
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/60; H04N25/62; H04N25/625; H04N25/621; H04N25/622; H04N25/70; H04N25/71; H04N25/73
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
84 words
In a solid image pickup element provided with CSD photoelectric conversion elements arrayed in two dimensions, a CSD scanning circuit for selecting each photoelectric conversion element to scan, a vertical transfer means and a horizontal transfer means for transferring a charge of the selected photoelectric conversion element vertically and horizontally respectively, a storage part for storing the transferred charge temporarily, the improvement comprising a driving means for transferring the charge from said photoelectric conversion elements to the storage part during a horizontal blanking period.
Claim 2
Dependent Claim
84 words
In a solid image pickup element provided with CSD photoelectric conversion elements arrayed in two dimensions, a CSD scanning circuit for selecting each photoelectric conversion element to scan, a vertical transfer means and a horizontal transfer means for transferring a charge of the selected photoelectric conversion element vertically and horizontally respectively, a storage part for storing the transferred charge temporarily, the improvement comprising a driving means for transferring the charge from said photoelectric conversion elements to the storage part during a horizontal blanking period.
Claim 3
Dependent Claim
56 words
The device defined in claim 1, wherein said driving means includes: (a) a smear component transfer electrode connected to a CSD transfer electrode, (b) an isolating electrode connected to said transfer electrode, (c) a smear sweepout control electrode connected to said transfer electrode, and (d) a smear drain connected to said smear sweep out control electrode.
Claim 4
Dependent Claim
28 words
The device defined in claim 1, wherein said driving means includes: (a) a smear drain provided proximate said storage part on the reverse side of a horizontal CCD.
Claim 5
Dependent Claim
33 words
The solid image pickup element as defined in claim 1, the driving means sweeping out the charge generated by a smear signal by driving the vertical transfer means during a horizontal scanning period.
Claim 6
Dependent Claim
69 words
In a driving method for CSD solid image pickup element whereby each photoelectric conversion element arrayed in two dimensions is selected to scan, a charge of the selected photoelectric conversion element is transferred vertically and horizontally, the transferred charge is stored temporarily in a storage part, the improvement characterized in that the charge is transferred from said photoelectric conversion element to the storage part during a horizontal blanking period.
Claim 7
Dependent Claim
69 words
In a driving method for CSD solid image pickup element whereby each photoelectric conversion element arrayed in two dimensions is selected to scan, a charge of the selected photoelectric conversion element is transferred vertically and horizontally, the transferred charge is stored temporarily in a storage part, the improvement characterized in that the charge is transferred from said photoelectric conversion element to the storage part during a horizontal blanking period.
Claim 8
Dependent Claim
100 words
In a solid image pickup element provided with photoelectric conversion elements arrayed in two dimensions: (a) a scanning circuit for selecting each photoelectric conversion element to scan, (b) a vertical transfer means and a horizontal transfer means for transferring a charge of the selected photoelectric conversion element vertically and horizontally respectively, (c) a storage part for storing the transferred charge temporarily, (d) a driving means for transferring a charge from said photoelectric conversion elements to the storage part during a horizontal blanking period by driving a pair of said vertical transfer means in one phase during said horizontal blanking period.
Claim 9
Dependent Claim
100 words
In a solid image pickup element provided with photoelectric conversion elements arrayed in two dimensions: (a) a scanning circuit for selecting each photoelectric conversion element to scan, (b) a vertical transfer means and a horizontal transfer means for transferring a charge of the selected photoelectric conversion element vertically and horizontally respectively, (c) a storage part for storing the transferred charge temporarily, (d) a driving means for transferring a charge from said photoelectric conversion elements to the storage part during a horizontal blanking period by driving a pair of said vertical transfer means in one phase during said horizontal blanking period.
Claim 10
Dependent Claim
57 words
The device defined in claim 6, wherein said driving means includes: (a) a smear component transfer electrode connected to a CSD transfer electrode, (b) an isolating electrode connected to said transfer electrode. (c) a smear sweep out control electrode connected to said transfer electrode, and (d) a smear drain connected to said smear sweep out control electrode.
Claim 11
Dependent Claim
28 words
The device defined in claim 6, wherein said driving means includes: (a) a smear drain provided proximate said storage part on the reverse side of a horizontal CCD.
Claim 12
Dependent Claim
33 words
The solid image pickup element as defined in claim 6, the driving means sweeping out the charge generated by a smear signal by driving the vertical transfer means during a horizontal scanning period.
Claim 13
Dependent Claim
63 words
In a driving method for a CSD solid image pickup element whereby each photoelectric conversion element arrayed in two dimensions is selected to be scanned, the steps including: (a) transferring vertically and horizontally a charge of the selected photoelectric conversion element, (b) storing said charge temporarily in a storage part, (c) transferring said charge to said storage part during a horizontal blanking period.
Claim 14
Dependent Claim
63 words
In a driving method for a CSD solid image pickup element whereby each photoelectric conversion element arrayed in two dimensions is selected to be scanned, the steps including: (a) transferring vertically and horizontally a charge of the selected photoelectric conversion element, (b) storing said charge temporarily in a storage part, (c) transferring said charge to said storage part during a horizontal blanking period.
Claim 15
Dependent Claim
65 words
In a driving method for a solid image pickup element whereby each photoelectric conversion element arrayed in two dimensions is selected to scan, the steps including: (a) transferring vertically and horizontally a charge of the selected photoelectric conversion elements at high speed to a storage part using plural electrodes to decrease the number of transfer stages, said transfer occuring entirely during a horizontal blanking period.
Claim 16
Dependent Claim
65 words
In a driving method for a solid image pickup element whereby each photoelectric conversion element arrayed in two dimensions is selected to scan, the steps including: (a) transferring vertically and horizontally a charge of the selected photoelectric conversion elements at high speed to a storage part using plural electrodes to decrease the number of transfer stages, said transfer occuring entirely during a horizontal blanking period.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |