US3197771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal detection, thresholding and switching system
Assignee: Individual
•
Filing: 1964-11-19
•
Granted: 1965-07-27
•
Expires: 1984-11-19
Abstract
No abstract record available.
Inventors
- 👤 Alfred I Mintzer
- 👤 Anton J Lisicky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:54
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/66; G01S13/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
RADAR TARGET DETECTION APPARATUS COMPRISING: (A) A VIDEO RECEIVER; (B) MEANS FOR SCAN GATING THE RECEIVER OVER A PRESELECTED RADAR SEARCH AREA; (C) A FIRST INTEGRATING CIRCUIT NORMALLY COUPLED TO THE GATED OUTPUT OF THE RECEIVER, SAID FIRST INTEGRATING CIRCUIT HAVING A PREDETERMINED TIME CONSTANT; (D) A FIRST THRESHOLD CIRCUIT COUPLED TO THE OUTPUT OF THE FIRST INTEGRATING CIRCUIT; (E) A SECOND INTEGRATING CIRCUIT HAVING A TIME CONSTANT WHICH IS A PREDETERMINED AMOUNT GREATER THAN THE TIME CONSTANT OF THE FIRST INTEGRATING CIRCUIT; (F) A SECOND THRESHOLD CIRCUIT COUPLED TO THE OUTPUT OF THE SECOND INTEGRATING CIRCUIT; (G) MEANS RESPONSIVE TO ENERGIZATION OF THE FIRST THRESHOLD CIRCUIT FOR COUPLING THE GATED OUTPUT OF THE RECEIVER TO THE SECOND INTEGRATING CIRCUIT; (H) TRACKING CIRCUITRY; (I) AND MEANS RESPONSIVE TO ENERGIZATION OF THE SECOND THRESHOLD CIRCUIT FOR DEENERGIZING THE RECEIVER SCAN GATING MEANS AND ENERGIZING THE TRACKING CIRCUITRY.
Claim 2
Dependent Claim
146 words
RADAR TARGET DETECTION APPARATUS COMPRISING: (A) A VIDEO RECEIVER; (B) MEANS FOR SCAN GATING THE RECEIVER OVER A PRESELECTED RADAR SEARCH AREA; (C) A FIRST INTEGRATING CIRCUIT NORMALLY COUPLED TO THE GATED OUTPUT OF THE RECEIVER, SAID FIRST INTEGRATING CIRCUIT HAVING A PREDETERMINED TIME CONSTANT; (D) A FIRST THRESHOLD CIRCUIT COUPLED TO THE OUTPUT OF THE FIRST INTEGRATING CIRCUIT; (E) A SECOND INTEGRATING CIRCUIT HAVING A TIME CONSTANT WHICH IS A PREDETERMINED AMOUNT GREATER THAN THE TIME CONSTANT OF THE FIRST INTEGRATING CIRCUIT; (F) A SECOND THRESHOLD CIRCUIT COUPLED TO THE OUTPUT OF THE SECOND INTEGRATING CIRCUIT; (G) MEANS RESPONSIVE TO ENERGIZATION OF THE FIRST THRESHOLD CIRCUIT FOR COUPLING THE GATED OUTPUT OF THE RECEIVER TO THE SECOND INTEGRATING CIRCUIT; (H) TRACKING CIRCUITRY; (I) AND MEANS RESPONSIVE TO ENERGIZATION OF THE SECOND THRESHOLD CIRCUIT FOR DEENERGIZING THE RECEIVER SCAN GATING MEANS AND ENERGIZING THE TRACKING CIRCUITRY.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |