Random number generator and method for generating a random number
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United States of America Patent
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Sep 16, 2008
Grant Date -
Jun 9, 2005
app pub date -
Sep 23, 2004
filing date -
Sep 24, 2003
priority date (Note) -
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Abstract
Random number generator having a transistor that generates an analog random telegraph signal (RTS) having a first or second signal state, a RTS detection unit for detecting the RTS generated by the transistor, a RTS sampling unit that supersamples the RTS detected by the RTS detection unit and thus generates a digitized RTS, a signal state duration detection unit that determines, from the digitized RTS, a first time variable representing the time duration of at least one first signal state of the generated RTS and a second time variable representing the time duration of at least one second signal state of the generated RTS, and a random number conversion unit, which is coupled to the signal state duration detection unit, and that generates a random number from the first time variable and the second time variable.
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