US3264623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High density dual track redundant recording system
Assignee: Potter Instrument Co Inc
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Filing: 1965-04-29
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Granted: 1966-08-02
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Expires: 1985-04-29
Abstract
No abstract record available.
Inventors
- 👤 Gabor Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:05
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/14; G11B20/1403; G11B20/1407; G11B20/1419; G11B20/18; G11B20/1803
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A DIGITAL INFORMATION RECORDING AND RECOVERY SYSTEM, THE COMBINATION OF, MEANS FOR DERIVING SELF-CLOCKING INFORMATION SIGNALS FROM A PRERECORDED DUAL-TRACK REDUNDANT MAGNETIC TAP WHEREIN SAID REDUNDANT TRACKS ARE SPACED BY A PREDETERMINED AMOUNT AT WHICH THE COMBINED SIGNAL LOSS DUE TO IMPERFECTIONS IN THE TAPE AND DUE TO INTER-CHANNEL TIME DISPLACEMENT IS SUBSTANTIALLY AT A MINIMUM, MEANS FOR DERIVING FROM SAID SIGNALS A SERIES OF PULSES REPRESENTING COMPOSITE INFORMATION AND
Claim 2
Dependent Claim
71 words
IN A DIGITAL INFORMATION RECORDING AND RECOVERY SYSTEM, THE COMBINATION OF, MEANS FOR DERIVING SELF-CLOCKING INFORMATION SIGNALS FROM A PRERECORDED DUAL-TRACK REDUNDANT MAGNETIC TAP WHEREIN SAID REDUNDANT TRACKS ARE SPACED BY A PREDETERMINED AMOUNT AT WHICH THE COMBINED SIGNAL LOSS DUE TO IMPERFECTIONS IN THE TAPE AND DUE TO INTER-CHANNEL TIME DISPLACEMENT IS SUBSTANTIALLY AT A MINIMUM, MEANS FOR DERIVING FROM SAID SIGNALS A SERIES OF PULSES REPRESENTING COMPOSITE INFORMATION AND
References Cited (Backward Citations)
US2813259A
Cited
GB792294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |