Random number generation apparatus and method

Details Random number generation apparatus and method Random number generation apparatus and method

2005-01-11

2009-11-03

Do, Chat C (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

C708S251000

Reexamination Certificate

active

07613756

ABSTRACT:
An apparatus and a method are provided for generating a random number, wherein the randomness of the random number is derived from thermal noise present across a pair of resistors. Each of the pair of resistors is defined to receive a respective input voltage and add a respective noise component to the input voltage. The output from each resistor in the pair of resistors is amplified to generate a noisy analog voltage that includes a representation of the random noise components added by the pair of resistors. The randomly varying noisy analog voltage is used to control a voltage controlled oscillator (VCO). The VCO generates a random digital signal based on the randomly varying noisy analog voltage. The random digital signal generated by the VCO is used to set a number of bits for defining a random number.

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