G - Physics – 01 – R
Patent
G - Physics
01
R
356/24, 324/58.1
G01R 31/28 (2006.01) G02B 13/04 (2006.01) G02B 13/06 (2006.01)
Patent
CA 1241375
Weighted Random Pattern Testing Apparatus and Method Abstract A method and apparatus for testing very large scale integrated circuit devices, most particularly Level Sensitive Scan Design (LSSD) devices, by applying differently configured sequences of pseudo-random patterns in parallel to each of the input terminals of the device under test, collecting the output responses from each of the output terminals in parallel, combining these outputs to obtain a signature which is a predetermined function of all of the sequences of parallel outputs and comparing the test signature with a known good signature obtained by computer simulation. The input test stimuli are further altered in a predetermined fashion as a function of the structure of the device to be tested, to individually weight the inputs in favor of more or less binary ones or zeros.
501737
Eichelberger Edward B.
Langmaid Roger N.
Lindbloom Eric
Motika Franco
Sinchak John L.
International Business Machines Corporation
Saunders Raymond H.
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