US3706092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic instrument servo
Assignee: Massachusetts Institute of Technology
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Filing: 1971-04-21
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Granted: 1972-12-12
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Expires: 1991-04-21
Abstract
Abstract AN ELECTRONIC INSTRONIC INSTRUMENT SERVO FOR CONTINUALLY MEASURING A DIFFERENTIAL IN A RECIEVED INPUT SIGNAL, WHETHER MODULATED OR UNMODULATED, AND GENERATING AN INSTANTANEOUS, SYNCHRONOUS, ENCODED OUTPUT PROPORTIONAL TO THE MEASURED DIFFERENTIAL. THE SERVO BASICALLY COMPRISES A FEEDBACK LOOP WHICH GENERATES A TRACKING SIGNAL DIFFERING IN PHASE FROM A REFERENCE IN PROPORTION TO THE MEASURED DIFFERENTIAL, AND APPARATUS FOR READING OUT (STROBING) THE CONTENT OF THE LOOP AT VERY PRECISE TIME INTERVALS RELATIVE TO THE REFERENCE, THEREBY GENERATING AN INSTANTANEOUS AND SYNCHRONOUS ENCODING OF THE PHASE ANGLE OF THE TRACKING SIGNAL.
Inventors
- 👤 Duncan B Cox Jr
- 👤 Kenneth Fertig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:06
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/16; H03L7/18; H03L7/183; H03L7/187; H03L7/189; H03M; H03M1/00; H03M1/12; H03M1/48
Claims Analysis
Total Claims: 0
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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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |