Apparatus for detecting and correcting errors in an encoded memo

Details Apparatus for detecting and correcting errors in an encoded memo Apparatus for detecting and correcting errors in an encoded memo

1974-12-31

1976-04-06

Atkinson, Charles E.

Registers

Transfer mechanism

Traveling pawl

3401461AL, G06F 1112

Patent

active

039492087

ABSTRACT:
Apparatus for a digital memory system which performs single and double error detection and correction, as well as the detection of faults in the memory storage elements which do not produce errors in the data word stored therein. The data word is encoded in a specialized Hamming SEC/DED code and the apparatus generates syndromes and byte parity bits which are analyzed to detect both the presence and nature of the errors and faults. A parallel correction procedure is followed and the results thereof compared to prevent the erroneous correction of errors.

REFERENCES:
patent: 3568153 (1971-03-01), Kurtz
patent: 3648239 (1972-03-01), Carter et al.
patent: 3668631 (1972-06-01), Griffith et al.
patent: 3678469 (1972-07-01), Freeman et al.
patent: 3688265 (1972-08-01), Carter et al.
patent: 3714629 (1973-01-01), Hong et al.
patent: 3755779 (1973-08-01), Price
patent: 3836957 (1974-09-01), Duke et al.

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