Patent US3181122A successfully refreshed from Google Patents.
US3181122A
Expired / Lapsed
US
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Phase code detecting systems having phase-locked loops
Assignee: Electro Mechanical Research Inc
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Filing: 1961-10-02
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Granted: 1965-04-27
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Expires: 1981-10-02
Abstract
No abstract record available.
Inventors
- 👤 Lloyd R Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:16
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/18; H04L27/22; H04L27/227; H04L27/2271; H04L27/2272; H04B; H04B14/00; H04B14/002; H04B14/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A SYSTEM FOR DETECTING AN INCOMING CODED ELECTRI SIGNAL WHOSE PHASE ASSUMES ONE OF TWO PRESCRIBED VALUES AT A RATE CORRESPONDING TO THE ENCODED INTELLIGENCE; A FIRST PHASE-LOCKED LOOP DISCRIMINATOR INCLUDING A FIRST PHASESENSITIVE DETECTOR AND A SIGNAL GENERATOR, SAID DISCRIMINATOR DETECTING SAID INCOMING SIGNAL WHEN ITS PHASE ASSUMES ONE OF SAID VALUES AND PROVIDING A FIRST REFERENCE SIGNAL; A SECOND PHASE-LOCKED LOOP DISCRIMINATOR INCLUDING A SECOND PHASE-SENSITIVE DETECTOR AND SAID SIGNAL GENERATOR, SAID DISCRIMINATOR DETECTING SAID INCOMING SIGNAL WHEN ITS PHASE ASSUMES THE OTHER OF SAID VALUES AND PROVIDING A SECOND REFERENCE SIGNAL, SAID FIRST AND SECOND REFERENCE SIGNALS HAVING SUBSTANTIALLY THE SAME PHASE; MEANS INCLUDING PHASE COMPRISING MEANS, SAID PHASE COMPARING MEANS COMPARING THE PHASE OF SAID INCOMING CODED SIGNAL RELATIVE TO THE PHASE OF SAID REFERENCE SIGNALS AND PROVIDING AN OUTPUT SIGNAL HAVING A PARAMETER WHICH ASSUMES ONE OF TWO PRESCRIBED STATES IN CORRESPONDENCE WITH SAID PHASE VALUES.
Claim 2
Dependent Claim
152 words
IN A SYSTEM FOR DETECTING AN INCOMING CODED ELECTRI SIGNAL WHOSE PHASE ASSUMES ONE OF TWO PRESCRIBED VALUES AT A RATE CORRESPONDING TO THE ENCODED INTELLIGENCE; A FIRST PHASE-LOCKED LOOP DISCRIMINATOR INCLUDING A FIRST PHASESENSITIVE DETECTOR AND A SIGNAL GENERATOR, SAID DISCRIMINATOR DETECTING SAID INCOMING SIGNAL WHEN ITS PHASE ASSUMES ONE OF SAID VALUES AND PROVIDING A FIRST REFERENCE SIGNAL; A SECOND PHASE-LOCKED LOOP DISCRIMINATOR INCLUDING A SECOND PHASE-SENSITIVE DETECTOR AND SAID SIGNAL GENERATOR, SAID DISCRIMINATOR DETECTING SAID INCOMING SIGNAL WHEN ITS PHASE ASSUMES THE OTHER OF SAID VALUES AND PROVIDING A SECOND REFERENCE SIGNAL, SAID FIRST AND SECOND REFERENCE SIGNALS HAVING SUBSTANTIALLY THE SAME PHASE; MEANS INCLUDING PHASE COMPRISING MEANS, SAID PHASE COMPARING MEANS COMPARING THE PHASE OF SAID INCOMING CODED SIGNAL RELATIVE TO THE PHASE OF SAID REFERENCE SIGNALS AND PROVIDING AN OUTPUT SIGNAL HAVING A PARAMETER WHICH ASSUMES ONE OF TWO PRESCRIBED STATES IN CORRESPONDENCE WITH SAID PHASE VALUES.
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) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |