US3242262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for transmitting binary data
Assignee: International Business Machines Corp
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Filing: 1961-09-21
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Granted: 1966-03-22
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Expires: 1981-09-21
Abstract
No abstract record available.
Inventors
- 👤 Melas Constantin Michael
- 👤 Hopner Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:14
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/18; H04L27/20; H04L27/2032; H04L27/2053; H04L27/206; H04L27/2067; H04L27/2071; H04L27/22; H04L27/227; H04L27/2275
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A BINARY DATA TRANSMISSION SYSTEM THE COMBINATION OF A SOURCE OF BINARY CODED SIGNALS, A SOURCE OF CARRIER WAVES OF REFERENCE PHASE, MEANS MODULATING A WAVE FROM SAID CARRIER WAVE SOURCE IN PHASE QUADRATURE WITH RESPECT TO SAID REFERENCE PHASE IN ACCORDANCE WITH SAID BINARY CODED SIGNALS, A RECEIVER, A TRANSMISSION LINK BETWEEN SAID MODULATING MEANS AND SAID RECEIVER, SAID RECEIVER INCLUDING DEMODULATING MEANS FOR DERIVING SAID BINARY CODED SIGNALS FROM SAID PHASE QUADRATURE MODULATED WAVE, AND A DEMODULATING WAVE GENERATOR COUPLED TO SAID DEMODULATING MEANS AND RESPONSIVE TO THE DERIVED BINARY CODED SIGNALS FOR PROVIDING A WAVE OF REFERENCE PHASE WITH RESPECT TO SAID MODULATED WAVE.
Claim 2
Dependent Claim
108 words
IN A BINARY DATA TRANSMISSION SYSTEM THE COMBINATION OF A SOURCE OF BINARY CODED SIGNALS, A SOURCE OF CARRIER WAVES OF REFERENCE PHASE, MEANS MODULATING A WAVE FROM SAID CARRIER WAVE SOURCE IN PHASE QUADRATURE WITH RESPECT TO SAID REFERENCE PHASE IN ACCORDANCE WITH SAID BINARY CODED SIGNALS, A RECEIVER, A TRANSMISSION LINK BETWEEN SAID MODULATING MEANS AND SAID RECEIVER, SAID RECEIVER INCLUDING DEMODULATING MEANS FOR DERIVING SAID BINARY CODED SIGNALS FROM SAID PHASE QUADRATURE MODULATED WAVE, AND A DEMODULATING WAVE GENERATOR COUPLED TO SAID DEMODULATING MEANS AND RESPONSIVE TO THE DERIVED BINARY CODED SIGNALS FOR PROVIDING A WAVE OF REFERENCE PHASE WITH RESPECT TO SAID MODULATED WAVE.
References Cited (Backward Citations)
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US2977417A
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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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |