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US4473902A
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Error correcting code processing system
Assignee: Unisys Corp
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Filing: 1982-04-22
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Granted: 1984-09-25
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Expires: 2002-04-22
Abstract
Abstract A high speed code processing system for error correcting code is disclosed. It uses bit parallel residue generation for cyclic codes. This minimizes the time delay for cyclic code processing. Residue generation of the bit string is accomplished by processing multiple bits in each clock time instead of the conventional bit-by-bit implementation. Thus, the checkword calculation and the syndrome calculation are accomplished at a significantly higher speed than the conventional shift register approach to provide a system capable of on-line residue generation.
Inventors
- 👤 Chungho Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:11
CPC Classifications
H; H03; H03M; H03M13/00; H03M13/03; H03M13/05; H03M13/13; H03M13/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A high speed code processing system for error correcting code comprising: an encoding/decoding apparatus; clocking means connected to and operative upon said encoding/decoding apparatus; means for supplying a string of information bits I (x) to said encoding/decoding apparatus; means further associated with said encoding/decoding apparatus for enabling encoding/decoding said information in multiple bit segments during a single clock time of said clocking means whereby said encoding/decoding time is substantially reduced; said encoding/decoding apparatus including further means for producing and storing a plurality of check bits m; said multiple bit segment being equal to a number of bits w taken in parallel at each clock cycle to thereby reduce the number of clock cycles required for encoding/decoding by a factor w; and said bits w being equal to said bits m.
Claim 2
Dependent Claim
130 words
A high speed code processing system for error correcting code comprising: an encoding/decoding apparatus; clocking means connected to and operative upon said encoding/decoding apparatus; means for supplying a string of information bits I (x) to said encoding/decoding apparatus; means further associated with said encoding/decoding apparatus for enabling encoding/decoding said information in multiple bit segments during a single clock time of said clocking means whereby said encoding/decoding time is substantially reduced; said encoding/decoding apparatus including further means for producing and storing a plurality of check bits m; said multiple bit segment being equal to a number of bits w taken in parallel at each clock cycle to thereby reduce the number of clock cycles required for encoding/decoding by a factor w; and said bits w being equal to said bits m.
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) | 1987-09-25 | 1988-03-26 | 1988-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-25 | 1992-03-26 | 1992-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-25 | 1996-03-26 | 1996-09-25 | $7700.00 | Window Closed / Lapsed |