Patent US2178639A successfully refreshed from Google Patents.
US3103553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape recording and/or reproducing system
Assignee: Ampex Corp
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Filing: 1961-12-11
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Granted: 1963-09-10
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Expires: 1981-12-11
Abstract
No abstract record available.
Inventors
- 👤 Chester W Newell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:01
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N9/80; H04N9/86; H04N9/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A SYSTEM FOR DEMODULATING A COMPOSITE COLOR VIDEO SIGNAL OF THE TYPE WHICH INCLUDES VIDEO INTELLIGENCE, SYNCHRONIZING PULSES AND COLOR BURSTS, COMPRISING MEANS SERVING TO AVERAGE A PREDETERMINED FRACTIONAL NUMBER OF CYLCES OF THE LAST-PREDETERMINED COLOR BURST AND FROM A PULSE, AN OSCILLATOR, SAID OSCILLATOR BEING CUT OFF BY SAID FORMED PULSE FOR THE DURATION OF THE PULSE WHEREBY THE OSCILLATIONS PRODUCED THEREBY ARE IN FIXED PHASE RELATIONSHIP WITH THE LAST PRECEDING COLOR BURST, AND DEMODULATING MEANS SERVING TO RECEIVE THE COMPOSITE COLOR SIGNAL AND PULSED OSCILLATIONS AND SERVING TO DEMODULATE THE COMPOSITE SIGNAL TO FORM THE COMPONENT SIGNALS FROM EACH LINE OF COLOR INFORMATION.
Claim 2
Independent Claim
105 words
A SYSTEM FOR DEMODULATING A COMPOSITE COLOR VIDEO SIGNAL OF THE TYPE WHICH INCLUDES VIDEO INTELLIGENCE, SYNCHRONIZING PULSES AND COLOR BURSTS, COMPRISING MEANS SERVING TO AVERAGE A PREDETERMINED FRACTIONAL NUMBER OF CYLCES OF THE LAST-PREDETERMINED COLOR BURST AND FROM A PULSE, AN OSCILLATOR, SAID OSCILLATOR BEING CUT OFF BY SAID FORMED PULSE FOR THE DURATION OF THE PULSE WHEREBY THE OSCILLATIONS PRODUCED THEREBY ARE IN FIXED PHASE RELATIONSHIP WITH THE LAST PRECEDING COLOR BURST, AND DEMODULATING MEANS SERVING TO RECEIVE THE COMPOSITE COLOR SIGNAL AND PULSED OSCILLATIONS AND SERVING TO DEMODULATE THE COMPOSITE SIGNAL TO FORM THE COMPONENT SIGNALS FROM EACH LINE OF COLOR INFORMATION.
References Cited (Backward Citations)
US2979537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |