Semiconductor integrated circuit device operating frequency...

Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element

Reexamination Certificate

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Reexamination Certificate

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07855572

ABSTRACT:
A variation in manufacturing total costs is obtained by using an excessive loss amount caused by unnecessarily discarding elemental semiconductor integrated circuits occurring as a result of a negative result being obtained in an elemental test but a positive result obtained from a device test, and a short loss amount caused by packaging elemental semiconductor integrated circuits for semiconductor integrated circuit devices that are discarded as a result of a positive result being obtained from the elemental test but a negative result being obtained from the device test. A new operating frequency is determined by using the variation in manufacturing total costs with respect to an operating frequency.

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Noriyuki Ito et al., “Delay Defect Screening for a 2.16GHz SPARC64 Microprocessor”, Fujitsu Limited, Fujitsu laboratory, 0-7803-9451-8/06, 2006, IEEE, 4A-1, pp. 342-347.
International Search Report for PCT/JP2007/070462, mailed Jan. 22, 2008.

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