US3249763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clock signal generator
Assignee: International Business Machines Corp
•
Filing: 1962-04-27
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Granted: 1966-05-03
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Hopner Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:21
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/02; H04L7/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A RECEIVING SYSTEM FOR ELECTRICAL SIGNALS, MEANS FOR PROVIDING A CLOCK SIGNAL SYNCHRONIZED WITH THE RECEIVED DATA SIGNAL COMPRISING: A CIRCUIT RESPONSIVE TO THE DATA SIGNAL TO EMIT A SIGNAL HAVING A HARMONIC AT THE FREQUENCY CORRESPONDING TO THE PULSE REPITITION RATE OF THE DESIRED CLOCK SIGNAL; SELECTIVE CIRCUIT MEANS TUNED TO THE FREQUENCY OF THE HARMONIC AND RESPONSIVE TO EACH PULSE OF THE SIGNAL OF SAID CIRCUIT TO GENERATE AN OUTPUT SIGNAL, SAID SELECTIVE CIRCUIT MEANS INCLUDING AN OSCILLATING CIRCIUT WHICH GENERATES THE OUTPUT SIGNAL THROUGHOUT A WORD OF MESSAGE EVEN WHEN THERE ARE NO DATA TRANSISTIONS IN THE RECEIVED DATA SIGNAL; SQUARING MEANS; AND BILATERAL MEANS COUPLING SAID SELECTIVE CIRCUIT MEANS TO SAID SQUARING MEANS.
Claim 2
Dependent Claim
118 words
IN A RECEIVING SYSTEM FOR ELECTRICAL SIGNALS, MEANS FOR PROVIDING A CLOCK SIGNAL SYNCHRONIZED WITH THE RECEIVED DATA SIGNAL COMPRISING: A CIRCUIT RESPONSIVE TO THE DATA SIGNAL TO EMIT A SIGNAL HAVING A HARMONIC AT THE FREQUENCY CORRESPONDING TO THE PULSE REPITITION RATE OF THE DESIRED CLOCK SIGNAL; SELECTIVE CIRCUIT MEANS TUNED TO THE FREQUENCY OF THE HARMONIC AND RESPONSIVE TO EACH PULSE OF THE SIGNAL OF SAID CIRCUIT TO GENERATE AN OUTPUT SIGNAL, SAID SELECTIVE CIRCUIT MEANS INCLUDING AN OSCILLATING CIRCIUT WHICH GENERATES THE OUTPUT SIGNAL THROUGHOUT A WORD OF MESSAGE EVEN WHEN THERE ARE NO DATA TRANSISTIONS IN THE RECEIVED DATA SIGNAL; SQUARING MEANS; AND BILATERAL MEANS COUPLING SAID SELECTIVE CIRCUIT MEANS TO SAID SQUARING MEANS.
References Cited (Backward Citations)
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Cited
US2478629A
Cited
US2768299A
Cited
US3007143A
Cited
US2995669A
Cited
US2996578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |