Method and apparatus for random sequence generator

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United States of America Patent

PATENT NO 6414558
SERIAL NO

09664042

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Abstract

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An apparatus is described comprising a noise source coupled to an input of a gain stage. The apparatus also includes a noise shaping stage that forms a shaped noise signal by reducing 1/f noise introduced by the gain stage. The noise shaping stage has an input coupled to an output of the gain stage. The apparatus also has a decision circuit that decides whether the shaped noise signal, or a signal derived from the shaped noise signal corresponds to a 1 or a 0. A method is described that amplifies a first noise signal to produce a second noise signal. A shaped noise signal is formed by reducing 1/f noise introduced to the second noise signal by the amplifying. A random sequence is generated by comparing, against a reference, the shaped noise signal or a signal derived from the shaped noise signal.

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Patent Owner(s)

Patent OwnerAddress
CEVA IRELAND LIMITED32-34 HARCOURT STREET DUBLIN 2

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Horan, John M Little Island, IL 7 93
Ryan, John G Rochestown, IL 12 455

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