US3248658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detector for information signals having an extremely low signal-to-noise ratio
Assignee: International Business Machines Corp
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Filing: 1963-03-14
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Granted: 1966-04-26
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Expires: 1983-03-14
Abstract
No abstract record available.
Inventors
- 👤 Caroll J Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:29
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/16; H04N5/165; H03; H03D; H03D1/00; H03D1/02; H03D1/04; H04N5/222; H04N5/257
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A CIRCUIT FOR STABILIZING THE VOLTAGE LEVEL OF AN INCOMING SIGNAL, SAID SIGNAL INCLUDING A LOW FREQUENCY NOISE COMPONENT OF UNPREDICTABLE FREQUENCY, SAID CIRCUIT COMPRISING: SIGNAL MIXING MEANS HAVING A FIRST AND A SECOND INPUT TERMINAL AND AN OUTPUT TERMINAL, MEANS FOR APPLYING SAID INCOMING SIGNAL TO SAID FIRST INPUT TERMINAL OF SAID MIXING MEANS, MEANS FOR GENERATING A SAWTOOTH SIGNAL, MEANS FOR APPLYING SAID SAWTOOTH SIGNAL TO SAID SECOND TERMINAL OF SAID MIXING MEANS, WHEREBY AN OUTPUT SIGNAL CONSISTING OF SAID INCOMING SIGNAL, INCLUDING SAID LOW FREQUENCY NOISE COMPONENT SUPERIMPOSED ON SAID SAWTOOTH SIGNAL APPEARS AT SAID OUTPUT TERMINAL OF SAID MIXING MEANS, A CAPACITOR HAVING A FIRST AND A SECOND TERMINAL, SAID FIRST TERMINAL BEING CONNECTED TO SAID OUTPUT OF SAID MIXING MEANS; AND RECTIFYING MEANS CONNECTED TO SAID SECOND TERMINAL OF SAID CAPACITOR FOR CLAMPING SAID LOW FREQUENCY NOISE COMPONENT OF SAID OUTPUT SIGNAL.
Claim 2
Dependent Claim
147 words
A CIRCUIT FOR STABILIZING THE VOLTAGE LEVEL OF AN INCOMING SIGNAL, SAID SIGNAL INCLUDING A LOW FREQUENCY NOISE COMPONENT OF UNPREDICTABLE FREQUENCY, SAID CIRCUIT COMPRISING: SIGNAL MIXING MEANS HAVING A FIRST AND A SECOND INPUT TERMINAL AND AN OUTPUT TERMINAL, MEANS FOR APPLYING SAID INCOMING SIGNAL TO SAID FIRST INPUT TERMINAL OF SAID MIXING MEANS, MEANS FOR GENERATING A SAWTOOTH SIGNAL, MEANS FOR APPLYING SAID SAWTOOTH SIGNAL TO SAID SECOND TERMINAL OF SAID MIXING MEANS, WHEREBY AN OUTPUT SIGNAL CONSISTING OF SAID INCOMING SIGNAL, INCLUDING SAID LOW FREQUENCY NOISE COMPONENT SUPERIMPOSED ON SAID SAWTOOTH SIGNAL APPEARS AT SAID OUTPUT TERMINAL OF SAID MIXING MEANS, A CAPACITOR HAVING A FIRST AND A SECOND TERMINAL, SAID FIRST TERMINAL BEING CONNECTED TO SAID OUTPUT OF SAID MIXING MEANS; AND RECTIFYING MEANS CONNECTED TO SAID SECOND TERMINAL OF SAID CAPACITOR FOR CLAMPING SAID LOW FREQUENCY NOISE COMPONENT OF SAID OUTPUT SIGNAL.
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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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |