US3936115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Start-up circuit for a deflection system
Assignee: RCA Licensing Corp
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Filing: 1974-11-06
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Granted: 1976-02-03
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Expires: 1994-11-06
Abstract
Abstract A start-up circuit for a deflection system comprises a deflection circuit including a first oscillator which produces a first signal for producing a deflection signal in a deflection winding in response to the first signal. A second oscillator coupled to the first oscillator controls the frequency and phase of the first oscillator when a direct current potential is coupled to said second oscillator. A rectifying circuit coupled to the deflection circuit and the second oscillator provides the direct current potential to the second oscillator when the deflection signal is being produced.
Inventors
- 👤 Wolfgang Friedrich Wilhelm Dietz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:53
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/83
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
In a deflection system a start-up circuit comprising: a deflection generator including a first oscillator which produces a first signal for producing a deflection signal in a deflection winding in response to said first signal; second oscillator means coupled to said first oscillator for controlling the frequency and phase of said first oscillator; and rectifying means coupled to said deflection means and to said second oscillator for providing a direct current operating potential to said second oscillator when said deflection signal is being produced.
Claim 2
Dependent Claim
84 words
In a deflection system a start-up circuit comprising: a deflection generator including a first oscillator which produces a first signal for producing a deflection signal in a deflection winding in response to said first signal; second oscillator means coupled to said first oscillator for controlling the frequency and phase of said first oscillator; and rectifying means coupled to said deflection means and to said second oscillator for providing a direct current operating potential to said second oscillator when said deflection signal is being produced.
Claim 3
Dependent Claim
16 words
A start-up circuit according to claim 1 wherein said second oscillator means is an integrated circuit.
Claim 4
Dependent Claim
67 words
A start-up circuit according to claim 2 wherein said deflection generator is coupled to said second oscillator means for providing said second oscillator means with a feedback signal and said second oscillator means includes a source of reference signals and a phase comparison means for comparing the phase relationship of said feedback signal and said reference signal for controlling the frequency and phase of the first oscillator.
Claim 5
Dependent Claim
33 words
A start-up circuit according to claim 3 wherein said first oscillator is a free running oscillator and said first signal has a free running frequency less than the frequency of said reference signal.
Claim 6
Dependent Claim
23 words
A start-up circuit according to claim 4 wherein said rectifying means includes means for limiting the maximum level of said direct current potential.
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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |