The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 2010
Filed:
Sep. 28, 2005
Dejan Lazich, Stutensee, DE;
Herbert Alrutz, Freiburg, DE;
Miodrag Temerinac, Gundelfingen, DE;
Steffen Schober, Ballendorf, DE;
Dejan Lazich, Stutensee, DE;
Herbert Alrutz, Freiburg, DE;
Miodrag Temerinac, Gundelfingen, DE;
Steffen Schober, Ballendorf, DE;
Micronas GmbH, Freiburg, DE;
Abstract
A method for generating random numbers in which oscillating digital output signals of unequal or equal periodicity are generated by at least two ring oscillators, an external parity signal representing a logical state being generated when an odd number of the output signals take on a specified logical state, the external parity signal being fed back to an external parity input of each of the respective ring oscillators. Also, a random number generator having at least two ring oscillators made up of independently freewnning inverter chains with feedback having an odd number of series-connected inverters that generate oscillating digital output signals of unequal or equal periodicity, and having first panty signal generating mechanisms that generate an external parity signal representing a logical state when an odd number of the output signals take on a specified logical state.