Patent JPS4935692A successfully refreshed from Google Patents.
Patent US3271750A successfully refreshed from Google Patents.
US3271750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binary data detecting system
Assignee: International Business Machines Corp
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Filing: 1962-12-13
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Granted: 1966-09-06
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Expires: 1982-12-13
Abstract
No abstract record available.
Inventors
- 👤 Padalino Marco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:53
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/14; G11B20/1403; G11B20/1407; G11B20/1419
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A REPRODUCING SYSTEM FOR BINARY DATA RECORDED ON A MAGNETIC MEDIUM MOVABLE PAST A TRANSDUCER, WHEREIN A FIRST PREDETERMINED PERIOD EXISTS BETWEEN FLUX POLARITY REVERSALS OR A SECOND PREDETERMINED PERIOD EXISTS BETWEEN FLUX POLARITY REVERSALS DEPENDENT ON THE BINARY DATA RECORDED, THE SECOND PERIOD BEING HALF AS LONG AS SAID FIRST PERIOD, COMPRISING: MEANS DERIVING ALTERNATING TRUE AND COMPLEMENTARY DATA SIGNALS CORRESPONDING TO THE MAGNETIC STATE OF SAID MEDIUM, MEANS RESPONSIVE TO SAID TRUE DATA SIGNAL FOR PRODUCING AN OUTPUT PULSE INDICATIVE OF ADJACENT FLUX REVERSALS HAVING SAID FIRST PERIOD, THE DIRECTION OF FLUX REVERSALS HAVING A PREDETERMINED SEQUENCE, MEANS RESPONSIVE TO SAID COMPLEMENTARY DATA SIGNAL FOR PRODUCING AN OUTPUT PULSE INDICATIVE OF ADJACENT
Claim 2
Dependent Claim
114 words
A REPRODUCING SYSTEM FOR BINARY DATA RECORDED ON A MAGNETIC MEDIUM MOVABLE PAST A TRANSDUCER, WHEREIN A FIRST PREDETERMINED PERIOD EXISTS BETWEEN FLUX POLARITY REVERSALS OR A SECOND PREDETERMINED PERIOD EXISTS BETWEEN FLUX POLARITY REVERSALS DEPENDENT ON THE BINARY DATA RECORDED, THE SECOND PERIOD BEING HALF AS LONG AS SAID FIRST PERIOD, COMPRISING: MEANS DERIVING ALTERNATING TRUE AND COMPLEMENTARY DATA SIGNALS CORRESPONDING TO THE MAGNETIC STATE OF SAID MEDIUM, MEANS RESPONSIVE TO SAID TRUE DATA SIGNAL FOR PRODUCING AN OUTPUT PULSE INDICATIVE OF ADJACENT FLUX REVERSALS HAVING SAID FIRST PERIOD, THE DIRECTION OF FLUX REVERSALS HAVING A PREDETERMINED SEQUENCE, MEANS RESPONSIVE TO SAID COMPLEMENTARY DATA SIGNAL FOR PRODUCING AN OUTPUT PULSE INDICATIVE OF ADJACENT
References Cited (Backward Citations)
US3217329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |