Appeal No. 1998-1119
Application No. 08/482,924
Claim 81 is illustrative of the claimed invention, and it
reads as follows:
81. A method for correcting single bit hard errors in a
stored digital data word of "n" bits, where n is a selected
integer, comprising the steps of:
a) storing only said digital data word and a parity
bit, said digital data word being stored in a selected storage
location of a memory in response to a write command from a
system including said memory;
b) reading said stored digital data word from said
selected storage location of said memory in response to a read
command from said system wherein said read command is issued
subsequent to said write command and after said write command
is completed;
c) inverting said read digital data word upon detection
of an error in said read digital data word;
d) writing said inverted digital data word to said
selected storage location in said memory;
e) reading said inverted digital data word from said
selected storage location in said memory immediately after
said writing; and
f) inverting said inverted digital data word retrieved
from said selected location in said memory to obtain said
digital word without an error.
The references relied on by the examiner are:
Knauft et al. (Knauft) 3,768,071 Oct. 23,
1973
Burghard et al. (Burghard) 4,117,458 Sept. 26,
1978
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