Patent US3229209A successfully refreshed from Google Patents.
US3229209A
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Vestigial sideband transmission system
Assignee: International Business Machines Corp
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Filing: 1962-12-18
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Granted: 1966-01-11
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Expires: 1982-12-18
Abstract
No abstract record available.
Inventors
- 👤 Dale L Critchlow
- 👤 Robert H Dennard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:56
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/22; H03D1/24; H04; H04B; H04B1/00; H04B1/68; H04L; H04L27/00; H04L27/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A TRANSMISSION SYSTEM, A TRANSMITTER FOR TRANSMITTING A SUPPRESSED CARRIER VESTIGIIAL SIDEBAND MODULATION SIGNAL COMPRISING IN COMBINATION: A SOURCE OF BINARY DATA SIGNAL, A SOURCE OF CARRIER SIGNAL, MODULATING MEANS RESPONSIVE TO SAID BINARY DATA SIGNAL AND SAID CARRIER SIGNAL FOR MODULATING SAID CARRIER SIGNAL WITH SAID DATA SIGNAL, A VESTIGIAL SIDEBAND FILTER COUPLED TO THE OUTPUT OF SAID MODULATING MEANS FOR FILTERING THE OUTPUT SIGNAL THEREFROM, AND MEANS COUPLED BETWEEN SAID SOURCE OF BINARY DATA SIGNAL AND SAID MODULATING MEANS FOR MODIFYING SAID DATA SIGNAL WITH A CONTINUOUS SIGNAL HAVING A PREDE-
Claim 2
Dependent Claim
94 words
IN A TRANSMISSION SYSTEM, A TRANSMITTER FOR TRANSMITTING A SUPPRESSED CARRIER VESTIGIIAL SIDEBAND MODULATION SIGNAL COMPRISING IN COMBINATION: A SOURCE OF BINARY DATA SIGNAL, A SOURCE OF CARRIER SIGNAL, MODULATING MEANS RESPONSIVE TO SAID BINARY DATA SIGNAL AND SAID CARRIER SIGNAL FOR MODULATING SAID CARRIER SIGNAL WITH SAID DATA SIGNAL, A VESTIGIAL SIDEBAND FILTER COUPLED TO THE OUTPUT OF SAID MODULATING MEANS FOR FILTERING THE OUTPUT SIGNAL THEREFROM, AND MEANS COUPLED BETWEEN SAID SOURCE OF BINARY DATA SIGNAL AND SAID MODULATING MEANS FOR MODIFYING SAID DATA SIGNAL WITH A CONTINUOUS SIGNAL HAVING A PREDE-
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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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |