Patent DE3828478A1 successfully refreshed from Google Patents.
US3292110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transversal equalizer for digital transmission systems wherein polarity of time-spaced portions of output signal controls corresponding multiplier setting
Assignee: AT&T Inc
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Filing: 1964-09-16
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Granted: 1966-12-13
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Expires: 1984-09-16
Abstract
No abstract record available.
Inventors
- 👤 Floyd K Becker
- 👤 Robert W Lucky
- 👤 Port Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:52
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/03; H04L25/03006; H04L25/03012; H04L25/03114; H04L25/03133; G; G06; G06J; G06J1/00; H03; H03K; H03K5/00; H03K5/01; H04L25/03127
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
APPARATUS FOR ESTABLISHING OPTIMUM SETTINGS FOR THE MULTIPLIERS IN A TRANSVERSAL EQUALILZER INTENDED FOR CORRECTION OF DISTORTION IMPOSED UPON A COMMUNICATION SIGNAL OF MULTIPLE FREQUENCY CONTENT IN PASSAGE FROM A SIGNAL SOURCE TO A RECEIVER THROUGH A TRANSMISSION MEDIUM HAVING A DISPERSIVE EFFECT UPON THE DIFFERENT FREQUENCY COMPONENTS OF SIGNALS APPLIED THERETO COMPRISING MEANS FOR TRANSMITTING A SERIES OF TEST IMPULSES THROUGH SAID TRANSMISSION MEDIUM, MEANS FOR DETECTING THE POLARITY OF SUCCESSIVE TIMESPACED SAMPLES OF EACH TEST IMPULSE TRAVERSING SAID TRANSVERSAL EQUALIZER AND ITS MULTIPLIERS, AND MEANS FOR INCREMENTALLY ADJUSTING THE SETTINGS OF SAID MULTIPLIERS IN INVERSE POLARITY RELATION TO SUCCESSIVE POLARITY INDICATIONS FROM SAID DETECTING MEANS AFTER EACH TEST IMPULSE HAS TRAVERSED SAID EQUALIZER.
Claim 2
Dependent Claim
115 words
APPARATUS FOR ESTABLISHING OPTIMUM SETTINGS FOR THE MULTIPLIERS IN A TRANSVERSAL EQUALILZER INTENDED FOR CORRECTION OF DISTORTION IMPOSED UPON A COMMUNICATION SIGNAL OF MULTIPLE FREQUENCY CONTENT IN PASSAGE FROM A SIGNAL SOURCE TO A RECEIVER THROUGH A TRANSMISSION MEDIUM HAVING A DISPERSIVE EFFECT UPON THE DIFFERENT FREQUENCY COMPONENTS OF SIGNALS APPLIED THERETO COMPRISING MEANS FOR TRANSMITTING A SERIES OF TEST IMPULSES THROUGH SAID TRANSMISSION MEDIUM, MEANS FOR DETECTING THE POLARITY OF SUCCESSIVE TIMESPACED SAMPLES OF EACH TEST IMPULSE TRAVERSING SAID TRANSVERSAL EQUALIZER AND ITS MULTIPLIERS, AND MEANS FOR INCREMENTALLY ADJUSTING THE SETTINGS OF SAID MULTIPLIERS IN INVERSE POLARITY RELATION TO SUCCESSIVE POLARITY INDICATIONS FROM SAID DETECTING MEANS AFTER EACH TEST IMPULSE HAS TRAVERSED SAID EQUALIZER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |