Mg. Karpovsky et Sm. Chaudhry, DESIGN OF SELF-DIAGNOSTIC BOARDS BY MULTIPLE SIGNATURE ANALYSIS, I.E.E.E. transactions on computers, 42(9), 1993, pp. 1035-1044
A new design approach, based on multiple signature analysis, for self-
diagnostic boards is presented. For this approach, test responses from
all chips on the board are compressed into space-time signatures usin
g nonbinary multiple error-correcting codes, and faulty chips are iden
tified by analyzing relations between distortions in these signatures.
This approach results in a considerable reduction of a hardware overh
ead, required for diagnostics, as compared with the straightforward ap
proach where separate signatures are computed for each chip on the boa
rd. The diagnostic approach presented can also be used for identificat
ion of faulty boards in a system or for faulty processors in a multipr
ocessor environment.