Random number generating method and semiconductor integrated circuit device

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United States of America Patent

PATENT NO 7702704
SERIAL NO

10588788

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Abstract

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A random number generating method for an electronic device including a plurality of unit circuits each first and second logic circuits, each logic circuit having a same shape and being formed through a same fabrication process, and an amplifier circuit for forming a binary signal by amplifying a noise superposed on the differential voltage of threshold voltages of the first and the second logic circuits; and a signal variation detecting circuit for forming an output signal in response to a variation in any of a plurality of binary signals outputted from the plurality of unit circuits, wherein a plurality of binary signals outputted from the signal variation detecting circuit are combined to generate a random number.

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Patent Owner(s)

Patent OwnerAddress
HITACHI ULSI SYSTEMS CO LTDTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Muranaka, Masaya Akishima, JP 28 894

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