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Dynamic test reordering

  • US 6,078,189 A
  • Filed: 09/28/1998
  • Issued: 06/20/2000
  • Est. Priority Date: 12/13/1996
  • Status: Expired due to Term
First Claim
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1. A method of testing a plurality of electronic devices for defect assessment, failure analysis, quality inspection and/or error observation comprising the steps of:

  • (a) providing a plurality of electronic devices to a tester for electrical testing;

    (b) providing a plurality of individual tests that define a functional test block having a large number of test patterns used in a sequence during testing said plurality of electronic devices;

    (c) testing a first electronic device of said plurality of devices with said plurality of functional tests, wherein an initializing step is done a plurality of times during said testing with said plurality of functional tests;

    (d) obtaining a result of said testing step (c) in regards to passing or failing the individual functional tests and in case of any noted failure identifying the individual functional tests that failed;

    (e) dynamically reordering the sequence for said plurality of functional tests within said functional test block based on said result in said step (d); and

    (f) testing a second electronic device of said plurality of devices with said reordered functional tests, wherein an initializing step is done a plurality of times during said testing with said reordered functional tests.

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