The approach is based the concept of robust compressors which incorporates the prior knowledge on the statistics of fault-free responses to achieve a guaranteed error-masking probability independent on distributions of errors. more » A quadratic compression technique is developed to overcome the drawback of the LFSRs technique. However, due to the simple structure of a programmable logic array (PLA), it is shown that almost all single cross-point faults in PLAs are detected by the test procedure using LFSRs such that the distribution of errors need not be obtained.
The compressor's total error-masking probability Q which involved laborious computation in obtaining the distribution of errors.
