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:
Oct. 04, 2011
Filed:
May. 13, 2004
Pim Theo Tuyls, Eindhoven, NL;
Theodorus Jacobus Johannes Denteneer, Eindhoven, NL;
Johan Paul Marie Gerard Linnartz, Eindhoven, NL;
Evgeny Alexandrovitch Verbitskiy, Eindhoven, NL;
Pim Theo Tuyls, Eindhoven, NL;
Theodorus Jacobus Johannes Denteneer, Eindhoven, NL;
Johan Paul Marie Gerard Linnartz, Eindhoven, NL;
Evgeny Alexandrovitch Verbitskiy, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A system for authenticating a physical object includes an enrolment device, an authentication device, and a storage for storing authentication data. The enrolment device includes an input for receiving a property set Y of the object measured using a measurement procedure. A processor is used for creating a property set I from the measured property set Y that meet a predetermined robustness criterion. It then creating a property set A from the property set I that includes less information on the actual properties than property set Y, and finally generates a control value V in dependence on properties of the property set A. An output is used for supplying the control value to the storage as part of the authentication data. The enrolment device operates in an analogous way.