Random number derivation method and random number generator...

Electrical computers: arithmetic processing and calculating – Electrical digital calculating computer – Particular function performed

Reexamination Certificate

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C708S250000, C708S251000

Reexamination Certificate

active

08037117

ABSTRACT:
Disclosed is a method for deriving random numbers at a higher speed than ever before while maintaining desired randomness without spoiling uniformity of the occurrence frequency of each random number. One pulse included in one of two or more mutually-independent random pulse sequences and one pulse included in one of the remaining random pulse sequences are used, respectively, as a start pulse and a stop pulse. Then a time interval between the start pulse and the stop pulse is measured, and the measured value is output. The pulses temporally occur in a random manner, and therefore the obtained sequence of numerical values becomes random numbers. Specifically, in FIG.1, time intervals t1to t4are measured, and these measured values (in FIG.1, four values) are derived as random numbers.

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