Random number generators and systems and methods relating to...

Details Random number generators and systems and methods relating to... Random number generators and systems and methods relating to...

2011-06-07

2011-06-07

Malzahn, David H (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07958174

ABSTRACT:
A random number generator comprising a sigma-delta modulator, the sigma-delta modulator having a modulation unit and a feedback loop arranged to receive a digital output signal from the modulator and form an adjustment signal in dependence on the digital output signal such that at any given time the absolute difference between an amplitude of a summation output signal of the modulator and a quantizer threshold of the modulator is less than the first voltage range. The random number generator is thus capable of forming a digital output signal that has a high degree of entropy.

REFERENCES:
patent: 6218973 (2001-04-01), Barrett et al.
patent: 6337643 (2002-01-01), Gabet et al.
patent: 6839010 (2005-01-01), Tsyrganovich
patent: 2007/0050437 (2007-03-01), Krayer Pitz et al.
patent: 2007/0139241 (2007-06-01), Hales et al.
patent: 2004-289793 (2004-10-01), None
patent: 2006-189946 (2006-07-01), None
International Search Report and Written Opinion for the corresponding PCT/GB2007/003429, filed Nov. 9, 2007.
Decision to Grant Patent, Japan Patent Office, JP 2009-518972, mailed Oct. 29, 2010.

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