Patent US3383604A successfully refreshed from Google Patents.
US3383604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double threshold detection system
Assignee: United States Department of the Navy
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Filing: 1966-05-09
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Granted: 1968-05-14
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Expires: 1986-05-09
Abstract
No abstract record available.
Inventors
- 👤 Richard E Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:50
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/18; G01S7/00; G01S7/02; G01S7/28; G01S7/285; G01S7/292; G01S7/2923; G01S7/2926
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
IN A DOUBLE THRESHOLD TARGET SIGNAL DETECTION SYSTEM, THE COMBINATION COMPRISING: (A) A SOURCE OF EQUALLY SPACED REFERENCE PULSES, (B) A SOURCE OF TIME-DELAYED PULSES OF THE SAME REPETITION RATE AS SAID REFERENCE PULSES, (C) A GATE CIRCUIT HAVING A FIRST INPUT COUPLED TO SAID SOURCE OF REFERENCE PULSES AND A SECOND INPUT COUPLED TO SAID SOURCE OF TIME-DELAYED PULSES FOR PRODUCING TO SAID SOURCE OF TIME-DELAYED PULSES FOR PRODUCING DURING THE DURATION OF ONE OF SAID REFERENCE PULSES. (D) DETECTOR CIRCUIT MEANS COUPLED TO SAID GATE CIRCUIT MEANS FOR STORING PULSES RECEIVED FROM SAID GATE CIRCUIT MEANS, (E) CONTROL CIRCUIT MEANS COUPLED BETWEEN SAID SOURCE OF REFERENCE PULSES AND SAID DETECTOR CIRCUIT MEANS FOR DISCHARGING THE STORED SIGNAL IN SAID DETECTOR CIRCUIT MEANS AND THEREBY CONTROLLING THE PULSE WIDTH OF EACH DETECTOR OUTPUT PULSE, (F) COUNTER CIRCUIT MEANS COUPLED TO SAID DETECTOR CIRCUIT MEANS AND BEING RESPONSIVE TO PRODUCE AN OUTPUT PULSE WHOSE AMPLITUDE IS PROPORTIONAL TO THE WIDTH AND NUMBER OF THE INPUT PULSES, (G) THRESHOLD CIRCUIT MEANS COUPLED TO SAID COUNTER CIRCUIT MEANS FOR PRODUCING FIRING PULSE IN RESPONSE TO A PREDETERMINED AMPLITUDE OF THE OUTPUT OF SAID COUNTER CIRCUIT MEANS.
Claim 2
Dependent Claim
194 words
IN A DOUBLE THRESHOLD TARGET SIGNAL DETECTION SYSTEM, THE COMBINATION COMPRISING: (A) A SOURCE OF EQUALLY SPACED REFERENCE PULSES, (B) A SOURCE OF TIME-DELAYED PULSES OF THE SAME REPETITION RATE AS SAID REFERENCE PULSES, (C) A GATE CIRCUIT HAVING A FIRST INPUT COUPLED TO SAID SOURCE OF REFERENCE PULSES AND A SECOND INPUT COUPLED TO SAID SOURCE OF TIME-DELAYED PULSES FOR PRODUCING TO SAID SOURCE OF TIME-DELAYED PULSES FOR PRODUCING DURING THE DURATION OF ONE OF SAID REFERENCE PULSES. (D) DETECTOR CIRCUIT MEANS COUPLED TO SAID GATE CIRCUIT MEANS FOR STORING PULSES RECEIVED FROM SAID GATE CIRCUIT MEANS, (E) CONTROL CIRCUIT MEANS COUPLED BETWEEN SAID SOURCE OF REFERENCE PULSES AND SAID DETECTOR CIRCUIT MEANS FOR DISCHARGING THE STORED SIGNAL IN SAID DETECTOR CIRCUIT MEANS AND THEREBY CONTROLLING THE PULSE WIDTH OF EACH DETECTOR OUTPUT PULSE, (F) COUNTER CIRCUIT MEANS COUPLED TO SAID DETECTOR CIRCUIT MEANS AND BEING RESPONSIVE TO PRODUCE AN OUTPUT PULSE WHOSE AMPLITUDE IS PROPORTIONAL TO THE WIDTH AND NUMBER OF THE INPUT PULSES, (G) THRESHOLD CIRCUIT MEANS COUPLED TO SAID COUNTER CIRCUIT MEANS FOR PRODUCING FIRING PULSE IN RESPONSE TO A PREDETERMINED AMPLITUDE OF THE OUTPUT OF SAID COUNTER CIRCUIT MEANS.
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) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |