Error detection and correction

Details Error detection and correction Error detection and correction

2005-09-06

2005-09-06

Chase, Shelly (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

Reexamination Certificate

active

06941502

ABSTRACT:
Data are detected and corrected with first and second error detecting and correcting stages. The first stage error detection and correction capabilities are determined by the number of errors it can detect and correct in a predetermined length data stream. The first stage determines the number of known and unknown data stream errors, corrects errors within its capability, and outputs to the second stage error states relative to the data stream. One state indicates no known data stream errors or first stage data stream correction being attained with less than first stage capability. Another state indicates the number of data stream errors exceeds the predetermined capability, resulting in failure to make the correction. A third state indicates correction of all data stream errors using all the first stage capability.

REFERENCES:
patent: 4646301 (1987-02-01), Okamoto et al.
patent: 5960010 (1999-09-01), Liu et al.

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