Patent US3127570A successfully refreshed from Google Patents.
US3127570A
Expired / Lapsed
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Circuit arrangement for synchronizing a local oscillator with the aid of a phase discriminator
Assignee: US Philips Corp
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Filing: 1960-10-18
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Granted: 1964-03-31
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Expires: 1980-10-18
Abstract
No abstract record available.
Inventors
- 👤 Smeulers Wouter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:16
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/04; H04N5/12; H04N5/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A CIRCUIT FOR SYNCHRONIZING AN OSCILLATOR WITH A PULSATORY SYNCHRONIZING SIGNAL, COMPRISING A SOURCE OF SAID SYNCHRONIZING SIGNAL, MEANS PROVIDING A SAWTOOTH WAVEFORM SIGNAL AND A SECOND PULSATORY SIGNAL HAVING REPETITION FREQUENCIES THE SAME AS THE FREQUENCY OF SAID OSCILLATOR, PHASE DISCRIMINATING MEANS CONNECTED TO SAID OSCILLATOR FOR CONTROLLING THE FREQUENCY THEREOF, GATE MEANS FOR APPLYING ONE OF SAID SYNCHRONIZING AND SAWTOOTH WAVEFORM SIGNALS TO SAID PHASE DISCRIMINATING MEANS, AND MEANS PROVIDING A CONTROL SIGNAL FOR SAID GATE MEANS COMPRISING MEANS PRODUCING A BEAT SIGNAL FROM SAID SYNCHRONIZING AND SECOND SIGNALS, MEANS INTEGRATING SAID BEAT SIGNAL TO PROVIDE SAID CONTROL SIGNAL, AND MEANS APPLYING SAID CONTROL SIGNAL TO SAID GATE MEANS.
Claim 2
Dependent Claim
111 words
A CIRCUIT FOR SYNCHRONIZING AN OSCILLATOR WITH A PULSATORY SYNCHRONIZING SIGNAL, COMPRISING A SOURCE OF SAID SYNCHRONIZING SIGNAL, MEANS PROVIDING A SAWTOOTH WAVEFORM SIGNAL AND A SECOND PULSATORY SIGNAL HAVING REPETITION FREQUENCIES THE SAME AS THE FREQUENCY OF SAID OSCILLATOR, PHASE DISCRIMINATING MEANS CONNECTED TO SAID OSCILLATOR FOR CONTROLLING THE FREQUENCY THEREOF, GATE MEANS FOR APPLYING ONE OF SAID SYNCHRONIZING AND SAWTOOTH WAVEFORM SIGNALS TO SAID PHASE DISCRIMINATING MEANS, AND MEANS PROVIDING A CONTROL SIGNAL FOR SAID GATE MEANS COMPRISING MEANS PRODUCING A BEAT SIGNAL FROM SAID SYNCHRONIZING AND SECOND SIGNALS, MEANS INTEGRATING SAID BEAT SIGNAL TO PROVIDE SAID CONTROL SIGNAL, AND MEANS APPLYING SAID CONTROL SIGNAL TO SAID GATE MEANS.
References Cited (Backward Citations)
US2968769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |