US4700233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image sensors having alternating arrays of high and low sensitivity picture elements
Assignee: Fuji Electric Co Ltd
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Filing: 1986-04-09
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Granted: 1987-10-13
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Expires: 2006-04-09
Abstract
Abstract Image sensors comprising an alternating array of two or more sets of photoelectric devices provide enhanced detail and reproduction of intermediate illuminances. The sets of photoelectric devices are selected such that each set produces a different level of output in response to the same level of illuminance.
Inventors
- 👤 Kato Toshiaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:42
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/03; H04N1/0308; H04N1/40; H04N1/40087; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/191
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
55 words
An image sensing device comprising a planar array of photoelectric devices, wherein the array of photoelectric devices comprises a first set of photoelectric devices having a first photosensitivity, and a second set of photoelectric devices having a second photosensitivity different from said first photosensitivity, said first and second sets being arranged in an alternating fashion.
Claim 2
Dependent Claim
55 words
An image sensing device comprising a planar array of photoelectric devices, wherein the array of photoelectric devices comprises a first set of photoelectric devices having a first photosensitivity, and a second set of photoelectric devices having a second photosensitivity different from said first photosensitivity, said first and second sets being arranged in an alternating fashion.
Claim 3
Dependent Claim
19 words
An image sensor according to claim 1, wherein the sets of photoelectric devices have different effective photoelectric conversion areas.
Claim 4
Dependent Claim
20 words
An image sensor according to claim 1, wherein different biasing voltages are respectively applied to the sets of photoelectric devices.
Claim 5
Dependent Claim
25 words
An image sensor according to claim 1, wherein amplification means are connected to the sets of photoelectric devices, said amplification means having different amplification factors.
References Cited (Backward Citations)
US4514765A
Cited
US4570076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |