US3331061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive-sense arrangement for data storage unit
Assignee: International Business Machines Corp
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Filing: 1963-11-27
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Granted: 1967-07-11
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Expires: 1983-11-27
Abstract
No abstract record available.
Inventors
- 👤 Mitchell P Marcus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:04
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
157 words
IN A DATA STORAGE SYSTEM, THE COMBINATION OF A PLURALITY OF STORAGE ELEMENTS DIVIDED INTO TWO GROUPS, A PLURALITY OF DRIVE LINES AND SENSE LINES POSITIONED WITH RESPECT TO SAID ELEMENTS SO THAT EACH ELEMENT IS OPERATIONALLY CONNECTED TO A UNIQUE PAIR OF DRIVE LINES AND SENSE LINES, MEANS PROVIDING TRANSIENT DRIVE PULES CONCURRENTLY TO SELECTED ONES OF THE DRIVE LINES IN EACH GROUP, MEANS FOR RENDERING THE ELEMENTS OF ONE OF SAID GROUPS RECEPTIVE ONLY TO POSITIVE EXCURSIONS OF THE DRIVE PULSES, MEANS FOR RENDERING THE ELEMENTS OF THE OTHER GROUP RECEPTIVE ONLY TO NEGATIVE EXCURSIONS OF THE DRIVE PULSES, AND A PLURALITY OF SENSING MEANS EACH CONNECTED TO ONE SENSE LINE IN EACH GROUP AND RESPONSIVE TO THE POSITIVE EXCURSION OF EACH DRIVE PULSE TO PROVIDE AT ONE TIME AN OUTPUT REPRESENTING THE DATA IN A SELECTED BIT POSITION IN SAID ONE GROUP AND RESPONSIVE TO THE NEGATIVE EXCURSION OF THE SAME PULSE TO PROVIDE
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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |