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Patent US3241122A successfully refreshed from Google Patents.
US3241122A
Expired / Lapsed
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Asynchronous data processing circuits
Assignee: International Business Machines Corp
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Filing: 1961-07-07
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Granted: 1966-03-15
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Expires: 1981-07-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul H Bardell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:10
CPC Classifications
H; H03; H03M; H03M5/00; H03M5/02; H03M5/16; H03M5/18; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/082; H03K19/0823
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A SEQUENTIALLY OPERATED CIRCUIT CAPABLE OF ACCEPTING INFORMATION AND RESTORING SIGNALS AND DEPENDING ON ITS PERVIOUS STATE OF OPERATION, EACH SIGNAL RESIDING IN A FIRST, SECOND OR THIRD VOLTAGE LEVEL OF A FIRST CODING SCHEME, AND FOR PROVIDING AN OUTPUT SIGNAL ADAPTABLE FOR USE IN A COMBINATORIAL CIRCUIT IN CORRESPONDING VOLTAGE LEVELS OF A SECOND CODING SCHEME, COMPRISING AN INPUT CIRCUIT FOR ACCEPTING SAID INPUT SIGNALS, MEANS FOR COMBINING SAID INFORMATION AND RESTORING SIGNALS, CYCLING MEANS COUPLED TO SAID COMBINING MEANS FOR CHANGING THE OUTPUT OF SAID COMBINING MEANS FROM SAID FIRST CODING SCHEME TO SAID SECOND CODING SCHEME, SAID CYCLING MEANS PRODUCING SAID OUTPUT SIGNAL, MEANS COUPLED TO SAID CYCLING MEANS FOR RECYCLING SAID OUTPUT SIGNAL BACK TO SAID FIRST CODING SCHEME AND FEEDING SAID RECYCLED SIGNAL TO SAID COMBINING MEANS, SAID RECYCLED SIGNAL BEING INDICATIVE OF THE PREVIOUS STATE OF OPERATION OF SAID CIRCUIT.
Claim 2
Dependent Claim
146 words
A SEQUENTIALLY OPERATED CIRCUIT CAPABLE OF ACCEPTING INFORMATION AND RESTORING SIGNALS AND DEPENDING ON ITS PERVIOUS STATE OF OPERATION, EACH SIGNAL RESIDING IN A FIRST, SECOND OR THIRD VOLTAGE LEVEL OF A FIRST CODING SCHEME, AND FOR PROVIDING AN OUTPUT SIGNAL ADAPTABLE FOR USE IN A COMBINATORIAL CIRCUIT IN CORRESPONDING VOLTAGE LEVELS OF A SECOND CODING SCHEME, COMPRISING AN INPUT CIRCUIT FOR ACCEPTING SAID INPUT SIGNALS, MEANS FOR COMBINING SAID INFORMATION AND RESTORING SIGNALS, CYCLING MEANS COUPLED TO SAID COMBINING MEANS FOR CHANGING THE OUTPUT OF SAID COMBINING MEANS FROM SAID FIRST CODING SCHEME TO SAID SECOND CODING SCHEME, SAID CYCLING MEANS PRODUCING SAID OUTPUT SIGNAL, MEANS COUPLED TO SAID CYCLING MEANS FOR RECYCLING SAID OUTPUT SIGNAL BACK TO SAID FIRST CODING SCHEME AND FEEDING SAID RECYCLED SIGNAL TO SAID COMBINING MEANS, SAID RECYCLED SIGNAL BEING INDICATIVE OF THE PREVIOUS STATE OF OPERATION OF SAID CIRCUIT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |