Random number source and associated methods

Details Random number source and associated methods Random number source and associated methods

2007-11-06

2007-11-06

Malzahn, D. H. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

10798808

ABSTRACT:
A random number source includes a ring oscillator generating an internal clock signal having random phase noise, and a first linear feedback shift register connected to the ring oscillator. A counter is connected to a first tap of the first linear feedback shift register for generating a count signal. A feedback bit controller is connected to a second tap of the first linear feedback shift register for generating a random feedback bit for a time based upon the count signal. A second linear feedback shift register is connected to the feedback bit controller for generating a random number based upon the random feedback bit.

REFERENCES:
patent: 4905176 (1990-02-01), Schulz
patent: 5781458 (1998-07-01), Gilley
patent: 6240432 (2001-05-01), Chuang et al.
patent: 6480072 (2002-11-01), Walsh et al.
patent: 6807553 (2004-10-01), Oerlemans
patent: 2002/0156819 (2002-10-01), Oerlemans
patent: 2002/0186086 (2002-12-01), Curiger et al.
patent: 2004/0193664 (2004-09-01), Shimasaki

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