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Patent US3248570A successfully refreshed from Google Patents.
US3248570A
Expired / Lapsed
US
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Signal discriminator circuit
Assignee: AT&T Inc
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Filing: 1963-08-01
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Granted: 1966-04-26
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Expires: 1983-08-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Wilmer B Gaunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:26
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A CIRCUIT FOR DISTINGUISHING NOISE AND INFORMATION SIGNALS OF LIKE AMPLITUDE AND POLARITY SUPER-IMPOSED ON VARYING DIRECT-CURRENT LEVELS AND AIN WHICH THE NOISE SIGNAL PEAKS PRIOR TO THE INFORMATION SIGNAL IN A GIVEN TIME INTERVAL COMPRISING INPUT CIRCUIT MEANS FOR RECEIVING SAID INPUT SIGNALS OF ONE POLARITY, OUTPUT CIRCUIT MEANS FOR GENERATING DELETED SIGNALS OF SAID ONE POLARITY, A LINEAR CMPLIFIER CONNECTED TO SAID INPUT CIECUIT MEANS, A THRESHOLD CIRCUIT PASSING ONLY SIGNALS ABOVE A FIXED REFERENCE LEVEL AND CONNECTED TO THE INPUT OF SAID OUTPUT CIRCUIT MEANS, MEANS COUPLING THE OUTPUT OF SAID AMPLIFIER TO SAID THRESHOLD CIRCUIT, MEANS FOR ESTABLISHING A DIRECT-CURRENT REFERENCE LEVEL AT SAID COUPLING MEANS, MEANS FOR INVERTING SAID INPUT SIGNALS SO THAT SIGNALS OF THE OPPOSITE POLARITY ARE PRESENTED TO SAID AMPLIFIER, AND MEANS FOR INHIBITING SAID LEVEL-ESTABLISHING MEANS AT A TIME WHICH PERMITS PRESENTATION ONLY OF THE TRAILING SLOPE OF SAID INVERTED SIGNALS TO SAID THRESHOLD CIRCUIT.
Claim 2
Dependent Claim
154 words
A CIRCUIT FOR DISTINGUISHING NOISE AND INFORMATION SIGNALS OF LIKE AMPLITUDE AND POLARITY SUPER-IMPOSED ON VARYING DIRECT-CURRENT LEVELS AND AIN WHICH THE NOISE SIGNAL PEAKS PRIOR TO THE INFORMATION SIGNAL IN A GIVEN TIME INTERVAL COMPRISING INPUT CIRCUIT MEANS FOR RECEIVING SAID INPUT SIGNALS OF ONE POLARITY, OUTPUT CIRCUIT MEANS FOR GENERATING DELETED SIGNALS OF SAID ONE POLARITY, A LINEAR CMPLIFIER CONNECTED TO SAID INPUT CIECUIT MEANS, A THRESHOLD CIRCUIT PASSING ONLY SIGNALS ABOVE A FIXED REFERENCE LEVEL AND CONNECTED TO THE INPUT OF SAID OUTPUT CIRCUIT MEANS, MEANS COUPLING THE OUTPUT OF SAID AMPLIFIER TO SAID THRESHOLD CIRCUIT, MEANS FOR ESTABLISHING A DIRECT-CURRENT REFERENCE LEVEL AT SAID COUPLING MEANS, MEANS FOR INVERTING SAID INPUT SIGNALS SO THAT SIGNALS OF THE OPPOSITE POLARITY ARE PRESENTED TO SAID AMPLIFIER, AND MEANS FOR INHIBITING SAID LEVEL-ESTABLISHING MEANS AT A TIME WHICH PERMITS PRESENTATION ONLY OF THE TRAILING SLOPE OF SAID INVERTED SIGNALS TO SAID THRESHOLD CIRCUIT.
References Cited (Backward Citations)
US3058008A
Cited
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 |