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:
Nov. 18, 2014
Filed:
Jul. 20, 2008
Applicant:
Markus Dichtl, München, DE;
Inventor:
Markus Dichtl, München, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 7/58 (2006.01); H03K 3/84 (2006.01); G07C 15/00 (2006.01);
U.S. Cl.
CPC ...
G07C 15/00 (2013.01); H03K 3/84 (2013.01); G06F 7/588 (2013.01);
Abstract
A device generates a random bit sequence with a digital ring oscillator circuit comprising logic components. The circuit has an input node and an output node, wherein the digital ring oscillator circuit is designed such that oscillation occurs during a change of state of a logic start signal coupled on the input node, said oscillation having a fixed point, and wherein on the output node a random signal can be tapped having an arbitrary level curve.