US3243788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recording and reproducing information in which a plurality of parallel data tracks are overlapped
Assignee: International Business Machines Corp
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Filing: 1961-06-29
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Granted: 1966-03-29
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Expires: 1981-06-29
Abstract
No abstract record available.
Inventors
- 👤 William R Maclay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:57
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/0007; G11B5/00; G11B5/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
138 words
THE METHOD OF RECORDING AND REPRODUCING INFORMATION WHICH COMPRISES THE STEPS OF RECORDING A PLURALITY OF REDUNDANT SIGNALS REPRESENTING AN INFORMATION QUANTITY ON A PLURALITY OF IMMEDIATELY ADJACENT RECORD TRACKS SO THAT THE PORTIONS OF SAID REDUNDANT SIGNALS RELATING TO THE SAME PORTION OF SAID INFORMATION QUANTITY ARE RECORDED IN ALIGNED AND ADJACENT SIDE-BY-SIDE RELATION, SAID ADJACENT RECORD TRACKS BEING RECORDED IN PARTIALLY OVERLAPPED RELATION SO THAT THE RESULTANT WIDTH OF A PARTIALLY OVERLAPPED TRACK IS SMALLER THAN THE WIDTH OF A SINGLE RECORD TRACK, AND SIMULTANEOUSLY SENSING THE INFORMATION ON SAID ADJACENT RECORD TRACKS PERTAINING TO SAID PORTIONS OF SAID REDUNDANT SIGNALS WITH A TRANSDUCER MEANS WHICH IS WIDER THAN SAID PLURALITY OF ADJACENT RECORD TRACKS WHEREBY THE OUTPUT SIGNAL FROM THE TRANSDUCER MEANS IS THE COMPOSITE OF THE REDUNDANT INFORMATION RECORDED ON SAID ADJACENT RECORD TRACKS.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |