Patent US3559103A successfully refreshed from Google Patents.
US3559103A
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US
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Method of delay modulation
Assignee: Individual
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Filing: 1965-10-05
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Granted: 1971-01-26
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Expires: 1985-10-05
Abstract
Abstract SIGNAL DELAY IS CONTROLLED IN ACCORDANCE WITH A CONTROL WAVEFORM BY INDIRECT COUPLING OF THE CONTROL WAVEFORM TO AN ELECTRICALLY VARIABLE DELAY ELEMENT THROUGH A COUPLING SYSTEM IN WHICH THE CONTROL WAVEFORM IS USED TO PRODUCE A PILOT WAVEFORM WHICH IS DELAY-MODULATED WITH RESPECT TO A WHOLLY PERIODIC REFERENCE WAVEFORM. THE PILOT AND REFERENCE WAVEFORMS ARE COMPARED AND ONE OF THEM IS FURTHER DELAY-MODULATED TO PRODUCE SUBSTANTIAL IDENTITY OF THE DELAYS AND AT THE SAME TIME DELAY-MODULATE THE SIGNAL. SYSTEMS EMPLOYING CONVENTIONAL ELECTRICAL VARIABLE DELAY ELEMENTS AND SYSTEMS DISPENSING WITH SUCH ELEMENTS ARE DESCRIBED.
Inventors
- 👤 Duane H Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:46
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; H; H03; H03C; H03C3/00; H04; H04B; H04B1/00; H04B1/62; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/93; H04N5/95
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |