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US3333205A
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Timing signal generator with frequency keyed to input
Assignee: International Business Machines Corp
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Filing: 1964-10-02
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Granted: 1967-07-25
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Expires: 1984-10-02
Abstract
No abstract record available.
Inventors
- 👤 John R Featherston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:30
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/02; H04L7/033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
IN A RECEIVING SYSTEM FOR ELECTRICAL SIGNALS, MEANS FOR PROVIDING A CLOCK SIGNAL SYNCHRONIZED WITH THE RECEIVED DATA SIGNAL, COMPRISING: CIRCUIT MEANS RESPONSIVE TO THE DATA SIGNAL TO EMIT A DATA TRANSITION PULSE; AN OSCILLATOR HAVING A CONTROL INPUT; A GATE RESPONSIVE TO THE TRANSITION PULSE FROM SAID CIRCUIT MEANS AND THE OUTPUT SIGNAL FROM SAID OSCILLATOR TO EMIT A FIRST SIGNAL WHEN A TRANSITION PULSE OCCURS SUBSEQUENT TO A TRANSITION OF THE OUTPUT SIGNAL FROM SAID OSCILLATOR AND A SECOND SIGNAL WHEN A TRANSITION PULSE OCCURS PRIOR TO A TRANSITION OF THE OUTPUT SIGNAL FROM SAID OSCILLATOR; A STORAGE DEVICE; A SUMMER CONNECTED TO SAID STORAGE DEVICE AND RESPONSIVE TO THE FIRST SIGNAL FROM SAID GATE TO ALTER THE CHARGE IN SAID STORAGE DEVICE IN A FIRST DIRECTION AND RESPONSIVE TO THE SECOND SIGNAL FROM SAID GATE TO ALTER THE CHARGE IN SAID STORAGE DEVICE IN A SECOND DIRECTION; AND MEANS TO CONNECT SAID STORAGE DEVICE TO THE CONTROL INPUT OF SAID OSCILLATOR.
Claim 2
Dependent Claim
164 words
IN A RECEIVING SYSTEM FOR ELECTRICAL SIGNALS, MEANS FOR PROVIDING A CLOCK SIGNAL SYNCHRONIZED WITH THE RECEIVED DATA SIGNAL, COMPRISING: CIRCUIT MEANS RESPONSIVE TO THE DATA SIGNAL TO EMIT A DATA TRANSITION PULSE; AN OSCILLATOR HAVING A CONTROL INPUT; A GATE RESPONSIVE TO THE TRANSITION PULSE FROM SAID CIRCUIT MEANS AND THE OUTPUT SIGNAL FROM SAID OSCILLATOR TO EMIT A FIRST SIGNAL WHEN A TRANSITION PULSE OCCURS SUBSEQUENT TO A TRANSITION OF THE OUTPUT SIGNAL FROM SAID OSCILLATOR AND A SECOND SIGNAL WHEN A TRANSITION PULSE OCCURS PRIOR TO A TRANSITION OF THE OUTPUT SIGNAL FROM SAID OSCILLATOR; A STORAGE DEVICE; A SUMMER CONNECTED TO SAID STORAGE DEVICE AND RESPONSIVE TO THE FIRST SIGNAL FROM SAID GATE TO ALTER THE CHARGE IN SAID STORAGE DEVICE IN A FIRST DIRECTION AND RESPONSIVE TO THE SECOND SIGNAL FROM SAID GATE TO ALTER THE CHARGE IN SAID STORAGE DEVICE IN A SECOND DIRECTION; AND MEANS TO CONNECT SAID STORAGE DEVICE TO THE CONTROL INPUT OF SAID OSCILLATOR.
References Cited (Backward Citations)
US3286085A
Cited
US3249886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |