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:
Feb. 28, 2006
Filed:
May. 08, 2002
Robert H Miller, Jr., Loveland, CO (US);
Robert H Miller, Jr., Loveland, CO (US);
Agilent Technologies, Inc., Palo Alto, CA (US);
Abstract
A method and circuit is presented for generating a random bit stream based on thermal noise of a Complementary Metal Oxide Semiconductor (CMOS) device. A circuit implementing the invention preferably includes at least a pair of identically implemented thermal noise generators whose outputs feed a differential amplifier. The differential amplifier measures and amplifies the difference between the noise signals. A sampling circuit compares the difference with a threshold value that is selected to track with process/voltage/temperature variations of the noise generator circuits to output a binary bit having a bit value determined according to the polarity of the noise difference signal relative to the threshold value. The sampling circuit may be clocked to generate a random bit stream.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile