Patent US3187263A successfully refreshed from Google Patents.
US3187263A
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Sweep signal generating circuit stabilized against noise and component drift problems
Assignee: Hazeltine Research Inc
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Filing: 1960-08-24
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Granted: 1965-06-01
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Expires: 1980-08-24
Abstract
No abstract record available.
Inventors
- 👤 Rosenstein Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:28
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/26; H03K4/28; H03K4/32; H03B; H03B23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A STABLE SWEEP-SIGNAL GENERATING CIRCUIT IN A TELEVISION RECEIVER COMPRISING: A SAWTOOTH OSCILLATOR TO BE CONTROLLED BY A PREDETERMINED PORTION OF A CONTROL SIGNAL; A DAMPER CIRCUIT INCLUDING A BOOST CAPACITOR ACROSS WHICH IS DEVELOPED A SIGNAL IN THE FORM OF A REPETITIVE SERIES OF PARABOLIC WAVES; AND MEANS FOR MODIFYING SAID CONTROL SIGNAL TO REDUCE THE POSSIBILITY THAT THE OSCILLATOR WILL BE UNDERSIRABLY CONTROLLED BY A PORTION OF THE CONTROL SIGNAL OTHER THAN SAID PREDETERMINED PORTION BY SUPPLYING THE BOOST CAPACITOR SIGNAL TO SAID OSCILLATOR FOR IMPROVING THE STABILITY OF THE OSCILLATOR AGAINST NOISE AND COMPONENT DRIFT.
Claim 2
Dependent Claim
98 words
A STABLE SWEEP-SIGNAL GENERATING CIRCUIT IN A TELEVISION RECEIVER COMPRISING: A SAWTOOTH OSCILLATOR TO BE CONTROLLED BY A PREDETERMINED PORTION OF A CONTROL SIGNAL; A DAMPER CIRCUIT INCLUDING A BOOST CAPACITOR ACROSS WHICH IS DEVELOPED A SIGNAL IN THE FORM OF A REPETITIVE SERIES OF PARABOLIC WAVES; AND MEANS FOR MODIFYING SAID CONTROL SIGNAL TO REDUCE THE POSSIBILITY THAT THE OSCILLATOR WILL BE UNDERSIRABLY CONTROLLED BY A PORTION OF THE CONTROL SIGNAL OTHER THAN SAID PREDETERMINED PORTION BY SUPPLYING THE BOOST CAPACITOR SIGNAL TO SAID OSCILLATOR FOR IMPROVING THE STABILITY OF THE OSCILLATOR AGAINST NOISE AND COMPONENT DRIFT.
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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |