US3199046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillator with afc and gate-controlled direct synchronization
Assignee: US Philips Corp
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Filing: 1961-09-19
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Granted: 1965-08-03
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Expires: 1981-09-19
Abstract
No abstract record available.
Inventors
- 👤 Smeulers Wouter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:23
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/04; H04N5/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
AN OSCILLATOR FREQUENCY CONTROL SYSTEM COMPRISING, AN OSCILLATOR CIRCUIT HAVING A PULSATORY OUTPUT VOLTAGE AND A FREQUENCY CONTROL INPUT, A SOURCE OF PULSATORY SYNCHRONIZING SIGNALS, A CURRENT CONTROL DEVICE HAVING AT LEAST FIRST AND SECOND ELECTRODES, MEANS CONNECTING SAID SECOND ELECTRODE TO A BIAS VOLTAGE SOURCE, MEANS APPLYING SAID SYNCHRONIZING SIGNALS TO SAID FIRST ELECTRODE WITH A POLARITY WITH RESPECT TO SAID BAIS SOURCE WHICH TENDS TO MAKE SAID DEVICE CONDUCTIVE, MEANS APPLYING AID PULSATORY OUTPUT VOLTAGE TO SAID SECOND ELECTRODE WHEREBY THE POLARITY OF THE PULSES OF SAID PULSATORY OUTPUT VOLTAGE BLOCK SAID DEVICE, WHEREBY SAID SYNCHRONIZING SIGNALS ARE PASSED BY SAID DEVICE ONLY WHEN SAID SYNCHRONIZING SIGNALS AND PULSES DO NOT COINCIDE, AND MEANS CONNECTING THE SECOND ELECTRODE OF SAID CURRENT CONTROL DEVICE TO SAID OSCILLATOR CIRCUIT FREQUENCY CONTROL INPUT FOR DIRECT SYNCHRONIZATION THEREOF, WHEREBY SAID SYNCHRONIZING PULSES ARE APPLIED TO SAID OSCILLATOR CIRCUIT ONLY WHEN SAID OSCILLATOR CIRCUIT IS OUT OF SYNCHRONIZATION WITH SAID SIGNALS.
Claim 2
Dependent Claim
158 words
AN OSCILLATOR FREQUENCY CONTROL SYSTEM COMPRISING, AN OSCILLATOR CIRCUIT HAVING A PULSATORY OUTPUT VOLTAGE AND A FREQUENCY CONTROL INPUT, A SOURCE OF PULSATORY SYNCHRONIZING SIGNALS, A CURRENT CONTROL DEVICE HAVING AT LEAST FIRST AND SECOND ELECTRODES, MEANS CONNECTING SAID SECOND ELECTRODE TO A BIAS VOLTAGE SOURCE, MEANS APPLYING SAID SYNCHRONIZING SIGNALS TO SAID FIRST ELECTRODE WITH A POLARITY WITH RESPECT TO SAID BAIS SOURCE WHICH TENDS TO MAKE SAID DEVICE CONDUCTIVE, MEANS APPLYING AID PULSATORY OUTPUT VOLTAGE TO SAID SECOND ELECTRODE WHEREBY THE POLARITY OF THE PULSES OF SAID PULSATORY OUTPUT VOLTAGE BLOCK SAID DEVICE, WHEREBY SAID SYNCHRONIZING SIGNALS ARE PASSED BY SAID DEVICE ONLY WHEN SAID SYNCHRONIZING SIGNALS AND PULSES DO NOT COINCIDE, AND MEANS CONNECTING THE SECOND ELECTRODE OF SAID CURRENT CONTROL DEVICE TO SAID OSCILLATOR CIRCUIT FREQUENCY CONTROL INPUT FOR DIRECT SYNCHRONIZATION THEREOF, WHEREBY SAID SYNCHRONIZING PULSES ARE APPLIED TO SAID OSCILLATOR CIRCUIT ONLY WHEN SAID OSCILLATOR CIRCUIT IS OUT OF SYNCHRONIZATION WITH SAID SIGNALS.
References Cited (Backward Citations)
US2838673A
Cited
US2848617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |