US4527200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid state imaging device
Assignee: Hitachi Ltd
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Filing: 1983-02-01
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Granted: 1985-07-02
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Expires: 2003-02-01
Abstract
Abstract In a solid state imaging device in which two signals on two horizontal scanning lines are read out simultaneously for easy image enhancement, the two signals read from the two horizontal scanning lines are subtracted from each other while they are added together, and the difference signal is added to the sum signal so as to produce a video signal subject to the image enhancement. As a solid state image sensor, a MOS type image sensor as well as a CCD, CID or CC type image sensor may be used.
Inventors
- 👤 Kenji Takahashi
- 👤 Shusaku Nagahara
- 👤 Naoki Ozawa
- 👤 Koji Kudo
- 👤 Chikafusa Hirano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:57
CPC Classifications
H; H04; H04N; H04N25/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
81 words
A solid state imaging device comprising a solid state image sensor with a plurality of photosensors disposed in two-dimensional matrix whereby signals from two horizontal scanning lines for the solid state image sensor are read out simultaneously, an adder circuit for adding the two-line signals, and a subtractor circuit for subtracting one of the two-line signals from the other, an output signal from the adder circuit being added with an output signal from the subtractor circuit to produce a video signal.
Claim 2
Dependent Claim
81 words
A solid state imaging device comprising a solid state image sensor with a plurality of photosensors disposed in two-dimensional matrix whereby signals from two horizontal scanning lines for the solid state image sensor are read out simultaneously, an adder circuit for adding the two-line signals, and a subtractor circuit for subtracting one of the two-line signals from the other, an output signal from the adder circuit being added with an output signal from the subtractor circuit to produce a video signal.
Claim 3
Dependent Claim
38 words
A solid state imaging device according to claim 1 further comprising a signal level setting device for adjusting the level of the output signal from said subtractor circuit for addition with the output signal from said adder circuit.
Claim 4
Dependent Claim
21 words
A solid state imaging device according to claim 1 wherein said solid state image sensor comprises a MOS type image sensor.
Claim 5
Dependent Claim
30 words
A solid state imaging device according to claim 1 wherein said solid state image sensor comprises a solid state image sensor using a CCD or a CID type image sensor.
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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) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |