US3332067A
Expired / Lapsed
US
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Tunnel diode associative memory
Assignee: Unisys Corp
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Filing: 1963-08-19
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Granted: 1967-07-18
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Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 James R Bacon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:48
CPC Classifications
G; G11; G11C; G11C15/00; G11C15/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
135 words
A TUNNEL DIODE ASSOCIATIVE MEMORY PLANE COMPRISING A MEMORY MATRIX OF X AND Y LINES AT EACH INTERSECTION OF WHICH EACH OF SAID LINES IS CONNECTED THROUGH A SEPARATE IMPEDANCE TO THE COMMON CONNECTION OF A TUNNEL DIODE STORAGE DEVICE WITH A COMPARISON SENSING MEANS, THE SENSING MEANS OF ALL Y LINE INTERSECTIONS WITH A SINGLE X LINE THEREAFTER CONNECTED TOGETHER TO A COMMON SENSE LINE, THERE BEING A COMMON SENSE LINE ASSOCIATED WITH EACH OF SAID X LINES, SAID MEMORY PLANE FURTHER COMPRISING A COMPARISON INTERROGATION ACTIVATING MEANS INCLUDING A PLURALITY OF INTERROGATING ACTIVATING BITS EQUAL IN NUMBER AND INDIVIDUALLY CORRESPONDING TO ONE OF SAID Y LINES WHEREBY SAID Y LINES ARE ACTIVATED BY SAID INTERROGATING BITS TO SIMULTANEOUSLY COMPARE THE PLURALITY OF ACTIVATING BITS WITH EACH PLURALITY OF BITS CONTAINED IN SAID TUNNEL
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |