US3564411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse detection by means of pattern recognition
Assignee: AT&T Inc
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Filing: 1969-03-18
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Granted: 1971-02-16
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Expires: 1989-03-18
Abstract
Abstract THIS APPLICATION DESCRIBES A SYSTEM OF PULSE DETECTION AND REGENERATION WHICH INVOLVES THE STEPS OF (1) COMPARING THE RECEIVED SIGNAL WITH A PLURALITY OF LOCALLYGENERATED, PREDISORTED SIGNALS REPRESENTING ALL POSSIBLE PULSE TRAINS, (2) ISOLATING THE ONE COMPARISON SIGNAL WHICH IS INDICATIVE OF THE "CORRECT" LOCALLY-GENERATED PULSE TRAIN, (3) IDENTIFYING THE REFERENCE GENERATOR THAT PRODUCED THE "CORRECT" PULSE TRAIN, AND (4) TRANSMITTING AN UNDISTORTED REPLICA OF THE DISTORTED RECEIVED SIGNAL IN RESPONSE TO SAID IDENTIFICATION.
Inventors
- 👤 Harold Seidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:32
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H04; H04J; H04J3/00; H04J3/02; H04J3/10; H04L; H04L25/00; H04L25/02; H04L25/20; H04L25/24; H04L25/242
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |