US3308434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronization circuit for signal generators using comparison of a specific data message
Assignee: AT&T Teletype Corp
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Filing: 1963-01-09
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Granted: 1967-03-07
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Expires: 1983-01-09
Abstract
No abstract record available.
Inventors
- 👤 Jerry M Glasson
- 👤 Walter B Mcclelland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:48
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/04; H04L7/041; H04L7/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A MESSAGE SYNCHRONIZATION CIRCUIT FOR A SIGNAL GENERATOR WHICH GENERATES A MESSAGE COMPRISED OF A PREDETERMINED SEQUENCE OF DATA BITS FOR COMPARISON WITH THE SAME MESSAGE OBTAINED FROM ANOTHER SOURCE, THE SYNCHRONIZATION CIRCUIT INCLUDING (A) FIRST DRIVING MEANS FOR DRIVING THE SIGNAL GENERATOR AT THE BIT RATE OF THE RECEIVED MESSAGE; (B) MEANS RESPONSIVE TO SAID FIRST DRIVING MEANS FOR CAUSING THE OUTPUT SIGNAL OF THE SIGNAL GENERATOR TO BE SAMPLED AND REGENERATED IN SYNCHRONISM WITH THE BIT RATE OF THE RECEIVED MESSAGE; (C) MEANS FOR COMPARING THE SIMULTANEOUS DATA BITS IN THE RECEIVED MESSAGE AND THE REGENERATED OUTPUT OF THE SIGNAL GENERATOR AND HAVING AN OUTPUT SIGNAL WHENEVER A PREDETERMINED RELATIONSHIP BETWEEN THE COMPARED DATA BITS EXISTS; AND (D) SECOND DRIVING MEANS RESPONSIVE TO THE OUTPUT OF THE COMPARING MEANS FOR APPLYING AN ADDITIONAL DRIVING SIGNAL TO THE SIGNAL GENERATOR EACH TIME AN OUTPUT SIGNAL IS OBTAINED FROM THE COMPARING MEANS TO CAUSE THE SIGNAL GENERATOR OUTPUT TO ADVANCE AN EXTRA BIT FOR EACH ADDITIONAL DRIVING SIGNAL.
Claim 2
Dependent Claim
168 words
A MESSAGE SYNCHRONIZATION CIRCUIT FOR A SIGNAL GENERATOR WHICH GENERATES A MESSAGE COMPRISED OF A PREDETERMINED SEQUENCE OF DATA BITS FOR COMPARISON WITH THE SAME MESSAGE OBTAINED FROM ANOTHER SOURCE, THE SYNCHRONIZATION CIRCUIT INCLUDING (A) FIRST DRIVING MEANS FOR DRIVING THE SIGNAL GENERATOR AT THE BIT RATE OF THE RECEIVED MESSAGE; (B) MEANS RESPONSIVE TO SAID FIRST DRIVING MEANS FOR CAUSING THE OUTPUT SIGNAL OF THE SIGNAL GENERATOR TO BE SAMPLED AND REGENERATED IN SYNCHRONISM WITH THE BIT RATE OF THE RECEIVED MESSAGE; (C) MEANS FOR COMPARING THE SIMULTANEOUS DATA BITS IN THE RECEIVED MESSAGE AND THE REGENERATED OUTPUT OF THE SIGNAL GENERATOR AND HAVING AN OUTPUT SIGNAL WHENEVER A PREDETERMINED RELATIONSHIP BETWEEN THE COMPARED DATA BITS EXISTS; AND (D) SECOND DRIVING MEANS RESPONSIVE TO THE OUTPUT OF THE COMPARING MEANS FOR APPLYING AN ADDITIONAL DRIVING SIGNAL TO THE SIGNAL GENERATOR EACH TIME AN OUTPUT SIGNAL IS OBTAINED FROM THE COMPARING MEANS TO CAUSE THE SIGNAL GENERATOR OUTPUT TO ADVANCE AN EXTRA BIT FOR EACH ADDITIONAL DRIVING SIGNAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |