US3411090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal phase control circuits
Assignee: AT&T Inc
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Filing: 1965-12-17
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Granted: 1968-11-12
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Expires: 1985-12-17
Abstract
No abstract record available.
Inventors
- 👤 Frank W Lescinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:07
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/02; H04L7/033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN COMBINATION: MEANS RECEIVING A MULTILEVEL CODED DATA SIGNAL INCLUDING A TRAIN OF DATA SYMBOLS OCCURRING AT A PREDETERMINED RATE, MEANS GENERATING A TRANSITION PULSE EACH TIME SAID SIGNAL INCLUDES A SIGNAL EXCRUSION BETWEEN ADJACENT ONES OF MULTIPLE INFORMATION-DETERMINANT LEVELS THEREOF, MEANS RECEIVING A TRAIN OF TIMING SIGNALS, MEANS RESPONSIVE TO SAID TIMING SIGNALS GENERATING A TRAIN OF REGULARLY RECURRING PULSES, THE LATTER PULSES OCCURRING AT SAID PREDETERMINED SYMBOL RATE OF SAID DATA SIGNAL AND HAVING A PULSE WIDTH WHICH IS SUBSTANTIALLY LESS THAN THE PERIOD OF SAID SIGNAL SYMBOLS, MEANS INTEGRATING SAID TRANSITION PULSES, AND
Claim 2
Dependent Claim
96 words
IN COMBINATION: MEANS RECEIVING A MULTILEVEL CODED DATA SIGNAL INCLUDING A TRAIN OF DATA SYMBOLS OCCURRING AT A PREDETERMINED RATE, MEANS GENERATING A TRANSITION PULSE EACH TIME SAID SIGNAL INCLUDES A SIGNAL EXCRUSION BETWEEN ADJACENT ONES OF MULTIPLE INFORMATION-DETERMINANT LEVELS THEREOF, MEANS RECEIVING A TRAIN OF TIMING SIGNALS, MEANS RESPONSIVE TO SAID TIMING SIGNALS GENERATING A TRAIN OF REGULARLY RECURRING PULSES, THE LATTER PULSES OCCURRING AT SAID PREDETERMINED SYMBOL RATE OF SAID DATA SIGNAL AND HAVING A PULSE WIDTH WHICH IS SUBSTANTIALLY LESS THAN THE PERIOD OF SAID SIGNAL SYMBOLS, MEANS INTEGRATING SAID TRANSITION PULSES, AND
References Cited (Backward Citations)
US3206681A
Cited
US3248664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |