Patent US1995750A successfully refreshed from Google Patents.
Patent US3315089A successfully refreshed from Google Patents.
US3315089A
Expired / Lapsed
US
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Sense amplifier
Assignee: Ampex Corp
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Filing: 1963-10-14
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Granted: 1967-04-18
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 David W Mayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:14
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06007; G11C11/06014; H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/58; H03K5/00; H03K5/01; H03K5/02; H03K5/04; H03K5/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A SENSE AMPLIFIER CIRCUIT FOR USE WITH A DIGITAL MEMORY FOR DETECTING THE PRESENCE OF A SIGNAL HAVING GREATER THAN A PREDETERMINED AMPLITUDE COMPRISING A DIFFERENTIAL AMPLIFIER HAVING FIRST AND SECOND INPUT TERMINALS AND INCLUDING FIRST AND SECOND TRANSISTORS, EACH TRANSISTOR HAVING A BASE, A COLLECTOR, AND AN EMITTER; MEANS RESPECTIVELY CONNECTING SAID FIRST AND SECOND INPUT TERMINALS TO SAID FIRST AND SECOND TRANSISTOR BASE; MEANS FOR APPLYING SAID SIGNAL BETWEEN SAID FIRST AND SECOND INPUT TERMINALS; MEANS INTERCONNECTING SAID FIRST AND SECOND TRANSISTOR EMITTERS; FIRST AND SECOND TUNNEL DIODES; FIRST AND SECOND AMPLIFIER MEANS RESPECTIVELY CONNECTING SAID FIRST AND SECOND TUNNEL DIODES TO SAID FIRST AND SECOND TRANSISTOR COLLECTORS; MEANS BIASING SAID TUNNEL DIODES FOR BISTABLE OPERATION; AND MEANS FOR SENSING THE STATES OF SAID FIRST AND SECOND TUNNEL DIODES.
Claim 2
Dependent Claim
131 words
A SENSE AMPLIFIER CIRCUIT FOR USE WITH A DIGITAL MEMORY FOR DETECTING THE PRESENCE OF A SIGNAL HAVING GREATER THAN A PREDETERMINED AMPLITUDE COMPRISING A DIFFERENTIAL AMPLIFIER HAVING FIRST AND SECOND INPUT TERMINALS AND INCLUDING FIRST AND SECOND TRANSISTORS, EACH TRANSISTOR HAVING A BASE, A COLLECTOR, AND AN EMITTER; MEANS RESPECTIVELY CONNECTING SAID FIRST AND SECOND INPUT TERMINALS TO SAID FIRST AND SECOND TRANSISTOR BASE; MEANS FOR APPLYING SAID SIGNAL BETWEEN SAID FIRST AND SECOND INPUT TERMINALS; MEANS INTERCONNECTING SAID FIRST AND SECOND TRANSISTOR EMITTERS; FIRST AND SECOND TUNNEL DIODES; FIRST AND SECOND AMPLIFIER MEANS RESPECTIVELY CONNECTING SAID FIRST AND SECOND TUNNEL DIODES TO SAID FIRST AND SECOND TRANSISTOR COLLECTORS; MEANS BIASING SAID TUNNEL DIODES FOR BISTABLE OPERATION; AND MEANS FOR SENSING THE STATES OF SAID FIRST AND SECOND TUNNEL DIODES.
References Cited (Backward Citations)
US3211921A
Cited
US3215854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |