US3324399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear phase demodulator
Assignee: Vitro Corp of America
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Filing: 1964-06-19
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Granted: 1967-06-06
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Expires: 1984-06-19
Abstract
No abstract record available.
Inventors
- 👤 Clifford C Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:28
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/18; H03D3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
APPARATUS FOR DEMODULATING A PHASE MODULATED SIGNAL, THE PHASE OF WHICH VARIES WITH RESPECT TO ITS CARRIER SIGNAL, COMPRISING MEANS FOR CLIPPING THE PHASE MODULATED SIGNAL, MEANS FOR SHIFTING THE PHASE OF A REFERENCE SIGNAL WHICH IS IN PHASE WITH THE CARRIER SIGNAL TO PRODUCE A PHASE SHIFTED REFERENCE SIGNAL, MEANS COUPLED TO SAID PHASE SHIFTING MEANS FOR CLIPPING SAID PHASE SHIFTED REFERENCE SIGNAL, AND COINCIDENCE CIRCUIT MEANS RESPONSIVE TO SAID CLIPPED PHASE MODULATED SIGNAL AND TO SAID CLIPPED PHASE SHIFTED REFERENCE SIGNAL FOR GENERATING A SIGNAL HAVING PULSES OF CONSTANT AMPLITUDE, THE DURATION OF SAID PULSES BEING COINCIDENT WITH THE RESPECTIVE PERIODS DURING WHICH SAID CLIPPED PHASE MODULATED SIGNALS AND SAID CLIPPED PHASE SHIFTED REFERENCE SIGNAL ARE OF THE SAME POLARITY.
Claim 2
Dependent Claim
122 words
APPARATUS FOR DEMODULATING A PHASE MODULATED SIGNAL, THE PHASE OF WHICH VARIES WITH RESPECT TO ITS CARRIER SIGNAL, COMPRISING MEANS FOR CLIPPING THE PHASE MODULATED SIGNAL, MEANS FOR SHIFTING THE PHASE OF A REFERENCE SIGNAL WHICH IS IN PHASE WITH THE CARRIER SIGNAL TO PRODUCE A PHASE SHIFTED REFERENCE SIGNAL, MEANS COUPLED TO SAID PHASE SHIFTING MEANS FOR CLIPPING SAID PHASE SHIFTED REFERENCE SIGNAL, AND COINCIDENCE CIRCUIT MEANS RESPONSIVE TO SAID CLIPPED PHASE MODULATED SIGNAL AND TO SAID CLIPPED PHASE SHIFTED REFERENCE SIGNAL FOR GENERATING A SIGNAL HAVING PULSES OF CONSTANT AMPLITUDE, THE DURATION OF SAID PULSES BEING COINCIDENT WITH THE RESPECTIVE PERIODS DURING WHICH SAID CLIPPED PHASE MODULATED SIGNALS AND SAID CLIPPED PHASE SHIFTED REFERENCE SIGNAL ARE OF THE SAME POLARITY.
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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |