Error detecting and correcting RAM assembly

Details Error detecting and correcting RAM assembly Error detecting and correcting RAM assembly

1980-04-01

1982-02-23

Atkinson, Charles E.

Excavating

371 13, G06F 1110

Patent

active

043172016

ABSTRACT:
A RAM assembly, or card, includes a random access memory portion for the data bits, as well as a random access memory portion for corresponding check bits. The card includes a parity generator and a parity comparator to determine the presence of an error. There is also included a decoder to decode the output of the comparator to determine the nature and position of the error. The error is not only corrected in the transmission to the central processor but is also fed back to correct the error in the RAM itself. Thus the errors that would appear in the RAM do not accumulate.

REFERENCES:
patent: 4037091 (1977-07-01), Beuscher
patent: 4175692 (1979-11-01), Watanabe
patent: 4216541 (1980-08-01), Clover et al.
Christensen and Pattin, Jr., Stuck-Track Error Correction, IBM Technical Disclosure Bulletin, vol. 13, No. 7, Dec. 1970, pp. 1844-1846.

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