Patent US3138135A successfully refreshed from Google Patents.
US3409833A
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System for detection and reconstruction of binary data transmitted at rates up to and exceeding twice the nyquist rate
Assignee: ASTRODATA Inc
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Filing: 1965-11-22
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Granted: 1968-11-05
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Expires: 1985-11-22
Abstract
No abstract record available.
Inventors
- 👤 Edward K Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:26
CPC Classifications
H; H03; H03M; H03M1/00; H04; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/4917; H03M1/06; H03M1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN BINARY DATA TRANSMISSION EQUIPMENT FIRST MEANS TO ESTABLISH UPPER AND LOWER SIGNAL AMPLITUDE THRESHOLDS, AND SECOND MEANS TO MAINTAIN A MARK OUTPUT WHEN THE SIGNAL AMPLITUDE IS ABOVE AN UPPER THRESHOLD, TO MAINTAIN A SPACE OUTPUT WHEN THE SIGNAL AMPLITUDE IS BELOW A LOWER THRESHOLD, TO PROVIDE A MARK OUTPUT WHEN THE SIGNAL AMPLITUDE TRAVERSES A LOWER THRESHOLD TOWARD AN UPPER THRESHOLD, AND TO PROVIDE A SPACE OUTPUT WHEN THE SIGNAL AMPLITUDE TRAVERSES AN UPPER THRESHOLD TOWARD A LOWER THRESHOLD.
Claim 2
Dependent Claim
81 words
IN BINARY DATA TRANSMISSION EQUIPMENT FIRST MEANS TO ESTABLISH UPPER AND LOWER SIGNAL AMPLITUDE THRESHOLDS, AND SECOND MEANS TO MAINTAIN A MARK OUTPUT WHEN THE SIGNAL AMPLITUDE IS ABOVE AN UPPER THRESHOLD, TO MAINTAIN A SPACE OUTPUT WHEN THE SIGNAL AMPLITUDE IS BELOW A LOWER THRESHOLD, TO PROVIDE A MARK OUTPUT WHEN THE SIGNAL AMPLITUDE TRAVERSES A LOWER THRESHOLD TOWARD AN UPPER THRESHOLD, AND TO PROVIDE A SPACE OUTPUT WHEN THE SIGNAL AMPLITUDE TRAVERSES AN UPPER THRESHOLD TOWARD A LOWER THRESHOLD.
References Cited (Backward Citations)
US3238299A
Cited
US3267459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |