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Patent US3560756A successfully refreshed from Google Patents.
US3560756A
Expired / Lapsed
US
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Optical storage device with solid state light actuated scanning means for solid state output means
Assignee: AT&T Inc
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Filing: 1968-08-28
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Granted: 1971-02-02
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Expires: 1988-08-28
Abstract
Abstract One surface of the target of a television camera device is scanned by a light beam, with light to be recorded being imaged on the opposite surface. The target comprises a substrate having a diode array on one side with a photoconductive layer being sandwiched between a transparent conductive film and the diode array. A voltage on the conductive film reverse biases the diodes. During one frame time, the diodes discharge as a function of light intensity imaged on the substrate. The scanning light beam recharges the diodes by increasing the localized conductivity of the photoconductive layer, and thus generates a video signal output.
Inventors
- 👤 Edward F Labuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:22
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/191; H10F99/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
The storage apparatus of claim 1 wherein: the scanning means comprises at least one semiconductor strip characterized by a capacity for propagating a high electric field traveling domain in response to an appropriately applied voltage, and a plurality of light emitting elements disposed along one surface of the semiconductor strip.
Claim 2
Dependent Claim
34 words
The optical storage apparatus of claim 2 further comprising: means for altering the scanning velocity of the confined light energy comprising a lens disposed between the light emitting elements and the transparent conductive film.
Claim 3
Dependent Claim
86 words
The optical storage apparatus of claim 3 wherein: the diode element array has an area which is smaller than the area of the light imaging element array; and the lens constitutes means for forming an image of the light imaging element array on the conductive film which has an area approximately equal to the area of the diode element array, whereby the scanning velocity of the confined light energy on the conductive film is smaller than the velocity of a traveling domain in the semiconductor strip.
Claim 4
Dependent Claim
65 words
The optical storage apparatus of claim 1 further comprising: a flat substrate of semiconductor material of a first conductivity type having first and second opposite surfaces; means for imaging light to be stored on the first surface of the substrate; and wherein the array of diode elements comprises an array of regions of a second conductivity type included on the second surface of the substrate.
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |