Random number generator

Details Random number generator Random number generator

Filed on

1996-05-15

Date issued

1998-01-06

Examiner

Malzahn, David H.

Patent Class

Boots, shoes, and leggings

Other Related Categories

331 78, G06F 758

Type

Patent

Status

active

Patent number

057062188

Description

ABSTRACT:
A random number generator using a single, slow, voltage controlled oscillator which receives a noise input and a plurality of high frequency ring oscillators. The ring oscillators are sampled under control of the slow oscillator. A circuit is used between the output of each of the ring oscillators and its respective D-type latch to assure that the sampling is unbiased, that is, that there will be near even distribution of 1s and 0s in the random numbers.

REFERENCES:
patent: 3790768 (1974-02-01), Chevalier et al.
patent: 4578649 (1986-03-01), Shupe
patent: 4694412 (1987-09-01), Domenik et al.
patent: 4791594 (1988-12-01), Harney et al.
patent: 4810975 (1989-03-01), Dias
patent: 4855690 (1989-08-01), Dias
patent: 5007087 (1991-04-01), Bernstein et al.
patent: 5627775 (1997-05-01), Hong et al.
An LSI Random Number Generator (RNG), Published in proc. Advances in Cryptology Conference on CRYPTO, 1984, Fairfield, et al., pp. 203-215.

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