US3217183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binary data detection system
Assignee: International Business Machines Corp
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Filing: 1963-01-04
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Granted: 1965-11-09
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Expires: 1983-01-04
Abstract
No abstract record available.
Inventors
- 👤 Leonard H Thompson
- 👤 Brunschweiger Mary Eileen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:28
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/14; G11B20/1403; G11B20/1407; G11B20/1419; H; H04; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/4904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A MAGNETIC REPRODUCING SYSTEM COMPRISING: MEANS DERIVING AN ALTERNATING ELECTRICAL SIGNAL CORRESPONDING TO THE MAGNETIZATION OF A RECORD MEDIUM HVING BINARY INFORMATION STORED THEREON, MEANS RESPONSIVE TO SAID ALTERNATING ELECTRICAL SIGNAL FOR PRODUCING AN ALTERNATING REFERENCE SIGNAL HAVING THE SAME FREQUENCY AS, AND SYNCHRONIZED WITH, SAID ELECTRTICAL SIGNAL, OUTPUT MEANS, INCLUDING MEANS FOR COMBINING SAID ELECTRICAL SIGNAL AND SAID REFERENCE SIGNAL, FOR PROVIDING AN OUTPUT SIGNAL REPRESENTING THE STORED BINARY INFORMATION, AND MEANS CONNECTED TO SAID COMBINING MEANS, CONTROLLED BY SAID REFERENCE SIGNAL, FOR PERIODICALLY RESETTING SAID COMBINING MEANS.
Claim 2
Dependent Claim
89 words
A MAGNETIC REPRODUCING SYSTEM COMPRISING: MEANS DERIVING AN ALTERNATING ELECTRICAL SIGNAL CORRESPONDING TO THE MAGNETIZATION OF A RECORD MEDIUM HVING BINARY INFORMATION STORED THEREON, MEANS RESPONSIVE TO SAID ALTERNATING ELECTRICAL SIGNAL FOR PRODUCING AN ALTERNATING REFERENCE SIGNAL HAVING THE SAME FREQUENCY AS, AND SYNCHRONIZED WITH, SAID ELECTRTICAL SIGNAL, OUTPUT MEANS, INCLUDING MEANS FOR COMBINING SAID ELECTRICAL SIGNAL AND SAID REFERENCE SIGNAL, FOR PROVIDING AN OUTPUT SIGNAL REPRESENTING THE STORED BINARY INFORMATION, AND MEANS CONNECTED TO SAID COMBINING MEANS, CONTROLLED BY SAID REFERENCE SIGNAL, FOR PERIODICALLY RESETTING SAID COMBINING MEANS.
References Cited (Backward Citations)
US2669706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |