US3303284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Framing method and apparatus for duobinary data transmission
Assignee: Automatic Electric Laboratories Inc
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Filing: 1963-08-30
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Granted: 1967-02-07
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Expires: 1983-08-30
Abstract
No abstract record available.
Inventors
- 👤 Lender Adam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:21
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/497
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
APPARATUS FOR FRAMING BINARY PULSES WHICH HAVE BEEN CONVERTED TO DUOBINARY PULSES FOR TRANSMISSION, SAID BINARY PULSES BEING COMPRISED OF ALTERNATE PULSES FROM TWO INDEPENDENT SERIES OF PULSES, WHERE SAID DUOBINARY PULSES ARE TO BE TRANSMITTED AND THEN RECONVERTED TO BINARY PULSES IN A RECEIVER HAVING A POST-DEMODULATION FILTER, WHICH APPARATUS COMPRISES: MEANS FOR INTRODUCING INTO THE CONVERTED DUOBINARY PULSES TO BE TRANSMITTED A SINE WAVE OF IDENTICAL FREQUENCY TO AND IN PHASE WITH ONE OF SAID TWO SERIES OF BINARY PULSES; MEANS FOR CONVERTING SAID SINE WAVE AT SAID RECEIVER BEFORE IT ENTERS SAID POST-DEMODULATION FILTER INTO A SERIES OF CLOCK PULSES OF IDENTICAL FREQUENCY TO AND
Claim 2
Dependent Claim
108 words
APPARATUS FOR FRAMING BINARY PULSES WHICH HAVE BEEN CONVERTED TO DUOBINARY PULSES FOR TRANSMISSION, SAID BINARY PULSES BEING COMPRISED OF ALTERNATE PULSES FROM TWO INDEPENDENT SERIES OF PULSES, WHERE SAID DUOBINARY PULSES ARE TO BE TRANSMITTED AND THEN RECONVERTED TO BINARY PULSES IN A RECEIVER HAVING A POST-DEMODULATION FILTER, WHICH APPARATUS COMPRISES: MEANS FOR INTRODUCING INTO THE CONVERTED DUOBINARY PULSES TO BE TRANSMITTED A SINE WAVE OF IDENTICAL FREQUENCY TO AND IN PHASE WITH ONE OF SAID TWO SERIES OF BINARY PULSES; MEANS FOR CONVERTING SAID SINE WAVE AT SAID RECEIVER BEFORE IT ENTERS SAID POST-DEMODULATION FILTER INTO A SERIES OF CLOCK PULSES OF IDENTICAL FREQUENCY TO AND
References Cited (Backward Citations)
US3060268A
Cited
US3230310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |