US3071644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control systems
Assignee: RCA Corp
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Filing: 1959-03-26
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Granted: 1963-01-01
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Expires: 1979-03-26
Abstract
No abstract record available.
Inventors
- 👤 George A Olive
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:34
CPC Classifications
G; G05; G05D; G05D13/00; G05D13/62; G11; G11B; G11B15/00; G11B15/60; G11B15/61; H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN APPARATUS FOR REPRODUCING TELEVISION SIGNALS HAVING SYNCHRONIZING SIGNAL COMPONENTS RECORDED ALONG TRANSVERSE RECORD TRACKS ON A MAGNETIC TAPE RECORD, SAID APPARATUS HAVING MEANS ROTATABLE ACROSS SAID RECORD FOR SCANNING SAID RECORD TRACKS TO REPRODUCE SAID SIGNALS, A CONTROL SYSTEM WHICH COMPRISES MEANS RESPONSIVE TO SAID SYNCHRONIZING SIGNAL COMPONENTS PROVIDING AN OUTPUT SIGNAL ACCORDING TO THE DIFFERENCE BETWEEN THE REPETITION RATE OF SAID COMPONENTS AND THE AVERAGE REPETITION RATE OF SAID COMPONENTS, MEANS FOR DERIVING A SINUSOIDAL COMPONENT OF SAID OUTPUT SIGNAL HAVING A FREQUENCY RELATED TO THE SPEED OF ROTATION OF SAID SCANNING MEANS, MEANS FOR PROVIDING A REFERENCE SIGNAL RELATED TO THE SPEED OF ROTATION OF SAID SCANNING MEANS, MEANS FOR DETECTING THE PHASE DIFFERENCE BETWEEN SAID REFERENCE SIGNAL AND SAID SINUSOIDAL COMPONENT TO DERIVE AN ERROR SIGNAL IN ACCORDANCE WITH THE MAGNITUDE AND SENSE OF SAID PHASE DIFFERENCE, AND MEANS RESPONSIVE TO SAID ERROR SIGNAL FOR CONTROLLING SAID SCANNING MEANS.
Claim 2
Dependent Claim
153 words
IN APPARATUS FOR REPRODUCING TELEVISION SIGNALS HAVING SYNCHRONIZING SIGNAL COMPONENTS RECORDED ALONG TRANSVERSE RECORD TRACKS ON A MAGNETIC TAPE RECORD, SAID APPARATUS HAVING MEANS ROTATABLE ACROSS SAID RECORD FOR SCANNING SAID RECORD TRACKS TO REPRODUCE SAID SIGNALS, A CONTROL SYSTEM WHICH COMPRISES MEANS RESPONSIVE TO SAID SYNCHRONIZING SIGNAL COMPONENTS PROVIDING AN OUTPUT SIGNAL ACCORDING TO THE DIFFERENCE BETWEEN THE REPETITION RATE OF SAID COMPONENTS AND THE AVERAGE REPETITION RATE OF SAID COMPONENTS, MEANS FOR DERIVING A SINUSOIDAL COMPONENT OF SAID OUTPUT SIGNAL HAVING A FREQUENCY RELATED TO THE SPEED OF ROTATION OF SAID SCANNING MEANS, MEANS FOR PROVIDING A REFERENCE SIGNAL RELATED TO THE SPEED OF ROTATION OF SAID SCANNING MEANS, MEANS FOR DETECTING THE PHASE DIFFERENCE BETWEEN SAID REFERENCE SIGNAL AND SAID SINUSOIDAL COMPONENT TO DERIVE AN ERROR SIGNAL IN ACCORDANCE WITH THE MAGNITUDE AND SENSE OF SAID PHASE DIFFERENCE, AND MEANS RESPONSIVE TO SAID ERROR SIGNAL FOR CONTROLLING SAID SCANNING MEANS.
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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |