US3308429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclic and multiplication by 2 mod n permutation decoder for systematic codes
Assignee: AT&T Inc
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Filing: 1963-11-15
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Granted: 1967-03-07
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Expires: 1983-11-15
Abstract
No abstract record available.
Inventors
- 👤 Florence J Macwilliams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:43
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/004; H04L1/0056; H04L1/0057; H03; H03M; H03M13/00; H03M13/03; H03M13/05; H03M13/13; H03M13/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN COMBINATION, MEANS FOR STORING A DIGITAL SEQUENCE WHICH IS A MEMBER OF A SYSTEMATIC CODE, AND MEANS CONNECTED TO SAID STORING MEANS FOR REARRANGING THE POSITIONS OF THE CONSTITUENT DIGITS OF SAID STORED SEQUENCE BY CYCLIC AND MULTIPLICATION BY 2 MOD N PERMUTATIONS, WHERE N IS THE NUMBER OF DIGITS IN THE SEQUENCE AND IS AN ODD INTEGER, AND FOR REGISTERING SAID REARRANGED SEQUENCE IN SAID STORING MEANS.
Claim 2
Dependent Claim
69 words
IN COMBINATION, MEANS FOR STORING A DIGITAL SEQUENCE WHICH IS A MEMBER OF A SYSTEMATIC CODE, AND MEANS CONNECTED TO SAID STORING MEANS FOR REARRANGING THE POSITIONS OF THE CONSTITUENT DIGITS OF SAID STORED SEQUENCE BY CYCLIC AND MULTIPLICATION BY 2 MOD N PERMUTATIONS, WHERE N IS THE NUMBER OF DIGITS IN THE SEQUENCE AND IS AN ODD INTEGER, AND FOR REGISTERING SAID REARRANGED SEQUENCE IN SAID STORING MEANS.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |