US3267459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data transmission system
Assignee: International Business Machines Corp
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Filing: 1962-12-18
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Granted: 1966-08-16
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Expires: 1982-12-18
Abstract
No abstract record available.
Inventors
- 👤 John S Chomicki
- 👤 Dale L Critchlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:53
CPC Classifications
H; H04; H04L; H04L5/00; H04L5/02; H04L5/04; G; G06; G06F; G06F13/00; G06F13/38; H03; H03M; H03M1/00; H04J; H04J99/00; H04L7/00; H04L7/02; H04L7/027; H03M1/12; H03M1/14; H03M1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A TRANSMISSION SYSTEM FOR BINARY DATA COMPRISING, IN COMBINATION: A FIRST ENCODER FOR CONVERTING BINARY DATA INTO MULTILEVEL DATA SIGNALS TRANSMISSION MEANS COUPLED TO SAID ENCODER INCLUDING A CHANNEL FOR TRANSMITTING SAID MULTI-LEVEL DATA SIGNALS; A DECODER HAVING AN INPUT COUPLED TO SAID TRANSMISSION MEANS FOR CONVERTING THE MULTL-LEVER DATA SIGNALS INTO BINARY DATA; A SECOND ENCODER COUPLED TO SAID DECODER AND RESPONSIVE TO THE BINARY DATE PRODUCED BY SAID DECODER FOR CONVERTING SAID BINARY DATA INTO A MULTI-LEVEL OUTPUT SIGNAL; AND MEANS CONNECTED TO SAID DECODER AND SAID SECOND ENCODER FOR COMBINING THE OUTPUT SIGNAL OF THE SECOND ENCODER WITH THE INPUT TO THE DECODER.
Claim 2
Dependent Claim
106 words
A TRANSMISSION SYSTEM FOR BINARY DATA COMPRISING, IN COMBINATION: A FIRST ENCODER FOR CONVERTING BINARY DATA INTO MULTILEVEL DATA SIGNALS TRANSMISSION MEANS COUPLED TO SAID ENCODER INCLUDING A CHANNEL FOR TRANSMITTING SAID MULTI-LEVEL DATA SIGNALS; A DECODER HAVING AN INPUT COUPLED TO SAID TRANSMISSION MEANS FOR CONVERTING THE MULTL-LEVER DATA SIGNALS INTO BINARY DATA; A SECOND ENCODER COUPLED TO SAID DECODER AND RESPONSIVE TO THE BINARY DATE PRODUCED BY SAID DECODER FOR CONVERTING SAID BINARY DATA INTO A MULTI-LEVEL OUTPUT SIGNAL; AND MEANS CONNECTED TO SAID DECODER AND SAID SECOND ENCODER FOR COMBINING THE OUTPUT SIGNAL OF THE SECOND ENCODER WITH THE INPUT TO THE DECODER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |