US3267380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diversity phase control system using subcarrier identifying signals
Assignee: SICHAK ASSOCIATES
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Filing: 1962-10-19
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Granted: 1966-08-16
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Expires: 1982-10-19
Abstract
No abstract record available.
Inventors
- 👤 Robert T Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:05
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/02; H04B7/04; H04B7/06; H04B7/0613
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR DIVERSITY COMMUNICATION COMPRISING TRANSMITTING AT LEAST TWO SIGNALS THROUGH A PROPAGATION MEDIUM BY WHICH SAID SIGNALS HAVE DIFFERENT FADING CHARACTERISTICS, IDENTIFYING AT LEAST ONE OF SAID SIGNALS BY IMPOSING IDENTIFYING MODULATION THEREON, RECEIVING SAID SIGNALS INCLUDING THE STEP OF COMBINING SAID RECEIVED SIGNALS, DETERMINING THE RELATIVE PHASE OF SAID RECEIVED SIGNALS BY DETECTING AND COMPARING AMPLITUDE AND PHASEVARYING COMPONENTS OF FEQUENCY CORRESPONDING TO SAID IDENTIFYING MODULATION AND CONTINUOUSLY CONTROLLABLY ADJUSTING THE PHASE OF AT LEAST ONE OF SAID TRANSMITTED SIGNALS IN RESPONSE TO A DETERMINED RELATIVE PHASE TO REDUCE SAID PHASE TO MINIMUM.
Claim 2
Dependent Claim
96 words
A PROCESS FOR DIVERSITY COMMUNICATION COMPRISING TRANSMITTING AT LEAST TWO SIGNALS THROUGH A PROPAGATION MEDIUM BY WHICH SAID SIGNALS HAVE DIFFERENT FADING CHARACTERISTICS, IDENTIFYING AT LEAST ONE OF SAID SIGNALS BY IMPOSING IDENTIFYING MODULATION THEREON, RECEIVING SAID SIGNALS INCLUDING THE STEP OF COMBINING SAID RECEIVED SIGNALS, DETERMINING THE RELATIVE PHASE OF SAID RECEIVED SIGNALS BY DETECTING AND COMPARING AMPLITUDE AND PHASEVARYING COMPONENTS OF FEQUENCY CORRESPONDING TO SAID IDENTIFYING MODULATION AND CONTINUOUSLY CONTROLLABLY ADJUSTING THE PHASE OF AT LEAST ONE OF SAID TRANSMITTED SIGNALS IN RESPONSE TO A DETERMINED RELATIVE PHASE TO REDUCE SAID PHASE TO MINIMUM.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |