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US3590153A
Expired / Lapsed
US
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Solid-state image scanner
Assignee: NEC Corp
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Filing: 1969-09-10
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Granted: 1971-06-29
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Expires: 1989-09-10
Abstract
Abstract A solid-state image scanner comprises a plurality of field effect transistors (FET''s) connected in series. A plurality of photodiodes are connected at one of their electrodes to the junctions of the FET''s, and their other electrodes are connected in common to a load resistor. A sawtooth scanning voltage is applied to one end of the series-connected FET''s. An output video signal is derived across the load resistor through a differentiating circuit.
Inventors
- 👤 Yasuo Minowa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:37
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/70; H04N25/701
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3378688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |