Patent US3303430A successfully refreshed from Google Patents.
US3303430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillator synchronization
Assignee: RCA Corp
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Filing: 1965-10-08
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Granted: 1967-02-07
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Expires: 1985-10-08
Abstract
No abstract record available.
Inventors
- 👤 Pratt John Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:16
CPC Classifications
H; H03; H03L; H03L1/00; H04; H04N; H04N5/00; H04N5/04; H04N5/12; H04N5/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A DEFLECTION AFC ARRANGEMENT INCLUDING: A DEFLECTION OSCILLATOR; PHASE DETECTOR MEANS FOR DEVELOPING AN ERROR VOLTAGE OUTPUT INDICATIVE OF THE MAGNITUDE AND SENSE OF THE PHASE DIFFERENCE, IF ANY, BETWEEN AN OUTPUT OF SAID DEFLECTION OSCILLATOR AND A SYNCHRONIZING WAVEFORM; MEANS FOR AMPLIFYING THE ERROR VOLTAGE OUTPUT OF SAID PHASE DETECTOR MEANS; MEANS FOR APPLYING THE OUTPUT OF SAID AMPLIFYING MEANS TO SAID OSCILLATOR TO CONTROL THE OSCILLATOR FREQUENCY; A SOURCE OF UNIDIRECTIONAL OPERATING POTENTIAL SUBJECT TO UNDERSIRED VARIATIONS; SAID OSCILLATOR INCLUDING A FIRST SIGNAL TRANSLATING DEVICE HAVING A PLURALITY OF ELECTRODES AND DERIVING AN OPERATING POTENTIAL FROM SAID SOURCE; SAID AMPLIFYING MEANS INCLUDING A SECOND SIGNAL TRANSLATING DEVICE HAVING AN OUTPUT ELECTRODE; SAID OUTPUT APPLYING MEANS COMPRISING DIRECT CURRENT CONDUCTIVE MEANS CONNECTING SAID OUTPUT ELECTRODE TO ONE OF SAID PLURALITY OF ELECTRODES OF SAID FIRST SIGNAL TRANSLATING DEVICE; AND MEANS FOR RENDERING THE OPERATING FREQUENCY OF SAID OSCILLATOR SUBSTANTIALLY INSENSITIVE TO SAID UNDESIRED POTENTIAL VARIATIONS, SAID LAST-NAMED MEANS COMPRISING A VOLTAGE-RESPONSIVE IMPEDANCE ELEMENT COUPLED BETWEEN SAID OUTPUT ELECTRODE AND SAID POTENTIAL SOURCE.
Claim 2
Dependent Claim
173 words
A DEFLECTION AFC ARRANGEMENT INCLUDING: A DEFLECTION OSCILLATOR; PHASE DETECTOR MEANS FOR DEVELOPING AN ERROR VOLTAGE OUTPUT INDICATIVE OF THE MAGNITUDE AND SENSE OF THE PHASE DIFFERENCE, IF ANY, BETWEEN AN OUTPUT OF SAID DEFLECTION OSCILLATOR AND A SYNCHRONIZING WAVEFORM; MEANS FOR AMPLIFYING THE ERROR VOLTAGE OUTPUT OF SAID PHASE DETECTOR MEANS; MEANS FOR APPLYING THE OUTPUT OF SAID AMPLIFYING MEANS TO SAID OSCILLATOR TO CONTROL THE OSCILLATOR FREQUENCY; A SOURCE OF UNIDIRECTIONAL OPERATING POTENTIAL SUBJECT TO UNDERSIRED VARIATIONS; SAID OSCILLATOR INCLUDING A FIRST SIGNAL TRANSLATING DEVICE HAVING A PLURALITY OF ELECTRODES AND DERIVING AN OPERATING POTENTIAL FROM SAID SOURCE; SAID AMPLIFYING MEANS INCLUDING A SECOND SIGNAL TRANSLATING DEVICE HAVING AN OUTPUT ELECTRODE; SAID OUTPUT APPLYING MEANS COMPRISING DIRECT CURRENT CONDUCTIVE MEANS CONNECTING SAID OUTPUT ELECTRODE TO ONE OF SAID PLURALITY OF ELECTRODES OF SAID FIRST SIGNAL TRANSLATING DEVICE; AND MEANS FOR RENDERING THE OPERATING FREQUENCY OF SAID OSCILLATOR SUBSTANTIALLY INSENSITIVE TO SAID UNDESIRED POTENTIAL VARIATIONS, SAID LAST-NAMED MEANS COMPRISING A VOLTAGE-RESPONSIVE IMPEDANCE ELEMENT COUPLED BETWEEN SAID OUTPUT ELECTRODE AND SAID POTENTIAL SOURCE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |