| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of compressing test vectors used in ATE at a high efficiency. SOLUTION: The method comprises a step (104) of generating a random sequence having at least the same number of elements as a test vector, a step (106) of segmenting the test vector into a plurality of test vector element segments one after another wherein at least one of the test vector segments has 'don't care' value, a step (106) of segmenting the random sequence into a plurality of random sequence element segments corresponding to the test vector segments, a step (108) of comparing the test vector segments with corresponding segments of the random sequence one after another to determine if pairs of the test vector segments and the random sequence segments coincide, a step (100a) of compressing the test vector by inserting different flag values to coincident corresponding segment pairs and not coincident corresponding segment pairs, and a step (100b) of canceling the compression of the compressed test vector, into a complete designation test vector, based on the different flag value.
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