Vadim P Popovich

US Patent:

6745217, Jun 1, 2004

Filed:

Apr 22, 2002

Appl. No.:

10/127221

Inventors:

Aleksandr Figotin - Irvine CA
Ilya Vitebskiy - Irvine CA
Vadim Popovich - Fresh Meadows NY
Gennady Stetsenko - Marrietta GA
Stanislav Molchanov - Matthews NC
Alexander Gordon - Weddington NC
Joseph Quinn - Charlotte NC
Nicholas Stavrakas - Charlotte NC

Assignee:

The Regents of the University of California - Oakland CA
The University of North Carolina at Charlotte - Charlotte NC
PDH International, Inc. - Hallandale FL

International Classification:

G06F 102

US Classification:

708250, 708255

Abstract:

The present invention is an apparatus and a method for generation of random numbers. The apparatus comprises an alpha-radiation source, such as Am 241, for which the decay product produces no secondary radiation with the energy equal or higher than that of the prime alpha radiation. The alpha particles emitted by the isotope and having reached the detector have a narrow energy spectrum and, hence, produce identical electrical pulses in a detector. An alpha-particle detection system is provided which includes a differential discriminator in combination with a logical selector. This combination of elements allows a positive identification of individual events of alpha-decay in the alpha-radiation source to be made and filters out any other signals produced by different radiation sources both inside and outside the apparatus. An electronic unit processes the stream of identical electric pulses into a stream of random numbers. The digital output of the physical random number generator will be completely free of correlations usually present in the output of other physical sources of random numbers and associated with: a) the physical source of randomness; b) the electronic circuitry; and c) outside and inside electromagnetic and other interference.

US Patent:

59874830, Nov 16, 1999

Filed:

Jan 9, 1998

Appl. No.:

9/005089

Inventors:

Jamie Edelkind - Atlanta GA
Ilya M. Vitebskiy - Marietta GA
Alexander Figotin - Charlotte NC
Vadim Popovich - Marietta GA

Assignee:

Leybold Systems GmbH - Hanau

International Classification:

G06F 102

US Classification:

708250

Abstract:

A random number generator based on naturally occurring events in which directional randomness of radioactivity is exploited to generate a random number sequence. Radiation emissions from a radiation source are detected at different spatial locations about the radiation source. A unique numerical value is assigned to radiation detected at the different spatial locations. A random number sequence comprising numerical values is generated depending upon which spatial location radiation is detected.