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:
Dec. 07, 2004
Filed:
Oct. 06, 2000
Volker Timm, Pinneberg, DE;
Ralf Malzahn, Seevetal, DE;
Wolfgang Eber, Graz, AT;
Dominik Berger, Graz, AT;
Jozef Laurentius Wilhelmus Kessels, Eindhoven, NL;
Torsten Kramer, Hamburg, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A data carrier is disclosed. The data carrier includes a data processing unit and at least one contactless interface via which the data processing unit can be coupled to a read/write apparatus in order to exchange data signals and to take up electrical energy for the operation of the data processing unit; the data processing unit is constructed at least mainly while using at least substantially asynchronously operating logic components (asynchronous logic). The data carrier according to the invention, such as a chip card, makes optimum use of the energy applied thereto and is at the same time protected against the tapping of the signal processing steps to be executed therein.