Patent ID: 7669100

Claim:
A method, comprising: providing first good/bad information for a first circuit on an integrated circuit; providing second good/bad information for a second circuit on the integrated circuit; providing third good/bad information for a third circuit on the integrated circuit, wherein the first circuit, second circuit, and third circuit each outputs a same test result in response to a same test input when good, and good/bad information is determined by examining test output from each of the first circuit, the second circuit and the third circuit on a bit-by-bit basis and voting to determine what binary value is recognized as a correct bit value for each respective bit to provide a correct test signature before comparing the correct test signature with each test output; and providing the integrated circuit for sale when at least one of the first good/bad information, second good/bad information, or third good/bad information indicates that at least one of the first circuit, second circuit, or third circuit remains bad for not being functional and is unrepaired.