US3197625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross correlator
Assignee: Electro Mechanical Research Inc
•
Filing: 1958-10-01
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Granted: 1965-07-27
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Expires: 1978-10-01
Abstract
No abstract record available.
Inventors
- 👤 Alfred G Ratz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:54
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/19; G06G7/1921; G06F; G06F17/00; G06F17/10; G06F17/15; G06G7/1928
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
162 words
A CROSS CORRELATOR COMPRISING A SOURCE OF FIRST WIDE BAND SIGNAL X(T), A SOURCE OF SECOND WIDE BAND SIGNAL Y(T), EACH OF SAID SIGNALS X(T) AND Y(T) HAVING A RELATIVELY EXTENSIVE FOURIER SPECTRUM, FREQUENCY SCANNING MEANS FOR CONCURRENTLY SELECTING SAMPLE NARROW BAND SIGNALS OF CORRESPONDING FREQUENCY EXISTING AT IDENTICAL TIMES IN SAID SIGNALS X(T) AND Y(T) FOR A RANGE OF FREQUENCIES TAKEN IN SUCCESSION, MEANS FOR CONTINUOUSLY MULTIPLYING SAID SAMPLE SIGNALS DURING SAID SELECING TO PROVIDE A PRODUCT SIGNAL DURING SAID SELECTION OVER SAID RANGE OF FREQUENCIES AND MEANS FOR CONTINUALLY INTEGRATING SAID PRODUCT SIGNAL DURING SAID SELECTING OVER A SUB TANTIAL TIME INTERVAL AT LEAST AS LONG AS THE PERIOD OF TIME REQUIRED BY SAID SELECTION OVER SAID RANGE OF FREQUENCIES, SAID MEANS FOR CONCURRENTLY SELECTING COMPRISING FIRST AND SECOND AMPLITUDE MODULATORS RESPONSIVE TO SAID WIDE BAND SIGNALS X(T) AND Y(T) RESPECTIVELY, AND A SOURCE OF FREQUENCY SCANNING LOCAL OSCILLATIONS CONNECTED TO SAID AMPLITUDE MODULATORS, SAID LOCAL OSCILLATIONS BEING SQUARE WAVES.
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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) | 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 |