US3876952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal processing circuits for charge-transfer, image-sensing arrays
Assignee: RCA Corp
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Filing: 1973-05-02
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Granted: 1975-04-08
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Expires: 1993-05-02
Abstract
Abstract During the serial shifting to an output buffer of the radiation induced charge signal accumulated in a row (or column) of an array, the successive signals are processed to improve the contrast of the sensed image. The portion of each signal of greater than a given amplitude is transmitted to a buffer stage and the remaining portion of each signal is removed. In one form of the invention, the signal-to-noise ratio is then enhanced at the expense of resolution by combining at the buffer the processed signal from a number of adjacent charge storage locations.
Inventors
- 👤 Paul Kessler Weimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:50
CPC Classifications
G; G11; G11C; G11C27/00; G11C27/04; H; H04; H04N; H04N25/00; H04N25/70; H04N25/71; H04N25/745; H04N25/76; H04N25/767; H04N25/7795; H10; H10D; H10D84/00; H10D84/891; H10D84/895
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
131 words
In combination: a charge storage register having a plurality of stages; another charge storage stage; a following stage; a charge accumulation stage; means for transferring charge signal from stage-to-stage of said register, and for concurrently transferring, at the same rate, the charge signal stored in said another charge storage stage to said following stage; means for transferring only that portion of each charge signal of greater than a given amplitude reaching the last stage of said register to said charge accumulation stage and the remaining portion of ech charge signal to said another charge storage stage; and means for transferring the charge signal accumulated in said accumulation stage to said another stage after each N transfers of charge signal to said accumulation stage, whre N is an interger greater than 1.
Claim 2
Dependent Claim
131 words
In combination: a charge storage register having a plurality of stages; another charge storage stage; a following stage; a charge accumulation stage; means for transferring charge signal from stage-to-stage of said register, and for concurrently transferring, at the same rate, the charge signal stored in said another charge storage stage to said following stage; means for transferring only that portion of each charge signal of greater than a given amplitude reaching the last stage of said register to said charge accumulation stage and the remaining portion of ech charge signal to said another charge storage stage; and means for transferring the charge signal accumulated in said accumulation stage to said another stage after each N transfers of charge signal to said accumulation stage, whre N is an interger greater than 1.
Claim 3
Dependent Claim
19 words
In the combination as set forth in claim 1, said charge storage register comprising one of the bucket-brigade type.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |