US3207915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single channel nrzi detection circuit
Assignee: International Business Machines Corp
•
Filing: 1961-01-24
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Granted: 1965-09-21
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Expires: 1981-01-24
Abstract
No abstract record available.
Inventors
- 👤 Brunschweiger Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:02
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/10009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN INFORMATION SIGNAL SENSING UNIT RESPONSIVE TO AN INPUT ELECTRICAL INFORMATION SIGNAL APPLIED THERETO COMPRISING: MEANS FOR DIFFERRNTIATING SAID INPUT SIGNALS, MEANS FOR PHASE INVERTING SAID DIFFERENTIATED SIGNAL, FIRST MEANS RESPONSIVE TO THE SEPARATE AND SIMULTANEOUS APPLICATION OF SAID DIFFERENTIATED SIGNALS AND SAID PHASE INVERTED SIGNAL FOR GENERATING A FIRST OUTPUT SIGNAL, SECOND MEANS RESPONSIVE TO THE SEPARATE AND SIMULTANEOUS APPLICATION OF SAID DIFFERENTIATED SIGNAL AND SAID PHASE INVERTED SIGNAL FOR GENERATING A SECOND OUTPUT SIGNAL, AND A GATING CIRCUIT RESPONSIVE TO THE SEPARATE AND SIMULTANEOUS APPLICATION OF SAID FIRST AND SECOND OUTPUT SIGNALS FOR GENERATING A THIRD OUTPUT SIGNAL INDICATING OF THE INFORMATION CONTENT OF SAID INPUT SIGNAL.
Claim 2
Dependent Claim
109 words
AN INFORMATION SIGNAL SENSING UNIT RESPONSIVE TO AN INPUT ELECTRICAL INFORMATION SIGNAL APPLIED THERETO COMPRISING: MEANS FOR DIFFERRNTIATING SAID INPUT SIGNALS, MEANS FOR PHASE INVERTING SAID DIFFERENTIATED SIGNAL, FIRST MEANS RESPONSIVE TO THE SEPARATE AND SIMULTANEOUS APPLICATION OF SAID DIFFERENTIATED SIGNALS AND SAID PHASE INVERTED SIGNAL FOR GENERATING A FIRST OUTPUT SIGNAL, SECOND MEANS RESPONSIVE TO THE SEPARATE AND SIMULTANEOUS APPLICATION OF SAID DIFFERENTIATED SIGNAL AND SAID PHASE INVERTED SIGNAL FOR GENERATING A SECOND OUTPUT SIGNAL, AND A GATING CIRCUIT RESPONSIVE TO THE SEPARATE AND SIMULTANEOUS APPLICATION OF SAID FIRST AND SECOND OUTPUT SIGNALS FOR GENERATING A THIRD OUTPUT SIGNAL INDICATING OF THE INFORMATION CONTENT OF SAID INPUT SIGNAL.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |