US3205451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency synthesizers with search sweep of controlled oscillator
Assignee: Compagnie Industrielle des Telephones SA
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Filing: 1962-01-03
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Granted: 1965-09-07
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Expires: 1982-01-03
Abstract
No abstract record available.
Inventors
- 👤 Babany Lucien
- 👤 Sibon Serge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:04
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/10; H03L7/12; H03J; H03J7/00; H03J7/18; H03J7/20; H03J7/28; H03J7/285; H03L7/16; H03L7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A FREQUENCY SYNTHESIZER INCLUDING A FREQUENCY SEEKING AND SYNCHRONIZING DEVICE COMPRISING A VARIABLE FREQUENCY OSCILLATOR MEANS CAPABLE OF GENERATING A SPECTRUM OF FREQUENCIES WITHIN A PRESCRIBED BAND IN RESPONSE TO A CONTROL SIGNAL, CRYSTAL CONTROLLED LOCAL OSCILLATOR MEANS, MODULATOR MEANS FOR MODULATING THE OUTPUTS OF SAID VARIABLE FREQUENCY OSCILLATOR MEANS AND SAID LOCAL OSCILLATOR MEANS TO PRODUCE A MEDIUM FREQUENCY SIGNAL, SAID MODULATOR MEANS BEING CAPABLE OF PASSING ONLY SIGNALS FALLING WITHIN A PRESCIRBED FREQUENCY BAND, PHASE DISCRIMINATOR MEANS FOR RECEIVING THE OUTPUT OF SAID MODULATOR MEANS AND OPERATIVE TO PRODUCE AN ERROR SIGNAL IN RESPONSE TO DEVIATIONS OF SAID MEDIUM FREQUENCY SIGNAL FROM A REFERENCE SIGNAL, PHASE SHIFTING MEANS FOR APPLYING SAID ERROR SIGNAL IN CONTROL OF THE FREQUENCY OF SAID VARIABLE FREQUENCY OSCILLATOR MEANS, AND GATING MEANS RESPONSIVE ONLY TO ZERO OUTPUT FROM SAID MODULATOR MEANS AND TO OUTPUT FROM SAID PHASE DISCRIMINATOR MEANS FOR APPLYING A SAWTOOTH VOLTAGE IN CONTROL OF SAID VARIABLE FREQUENCY OSCILLATOR.
Claim 2
Dependent Claim
158 words
A FREQUENCY SYNTHESIZER INCLUDING A FREQUENCY SEEKING AND SYNCHRONIZING DEVICE COMPRISING A VARIABLE FREQUENCY OSCILLATOR MEANS CAPABLE OF GENERATING A SPECTRUM OF FREQUENCIES WITHIN A PRESCRIBED BAND IN RESPONSE TO A CONTROL SIGNAL, CRYSTAL CONTROLLED LOCAL OSCILLATOR MEANS, MODULATOR MEANS FOR MODULATING THE OUTPUTS OF SAID VARIABLE FREQUENCY OSCILLATOR MEANS AND SAID LOCAL OSCILLATOR MEANS TO PRODUCE A MEDIUM FREQUENCY SIGNAL, SAID MODULATOR MEANS BEING CAPABLE OF PASSING ONLY SIGNALS FALLING WITHIN A PRESCIRBED FREQUENCY BAND, PHASE DISCRIMINATOR MEANS FOR RECEIVING THE OUTPUT OF SAID MODULATOR MEANS AND OPERATIVE TO PRODUCE AN ERROR SIGNAL IN RESPONSE TO DEVIATIONS OF SAID MEDIUM FREQUENCY SIGNAL FROM A REFERENCE SIGNAL, PHASE SHIFTING MEANS FOR APPLYING SAID ERROR SIGNAL IN CONTROL OF THE FREQUENCY OF SAID VARIABLE FREQUENCY OSCILLATOR MEANS, AND GATING MEANS RESPONSIVE ONLY TO ZERO OUTPUT FROM SAID MODULATOR MEANS AND TO OUTPUT FROM SAID PHASE DISCRIMINATOR MEANS FOR APPLYING A SAWTOOTH VOLTAGE IN CONTROL OF SAID VARIABLE FREQUENCY OSCILLATOR.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |