Patent · US Expired

Data carrier

US6827278B1 · kind B1 · utility

1Cited by

15References

10Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Volker Timm · Pinneberg, DE
Ralf Malzahn · Seevetal, DE
Wolfgang Eber · Zeltweg, AT
Dominik Berger · Graz, AT
Jozef L. W. Kessels · Eindhoven, NL
Torsten Kramer · Wannweil, DE

Key dates

Filing date	Oct 6, 2000
Grant date	Dec 7, 2004
Priority date	—
Expiry date	Oct 6, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG06K19/073
WIPO fieldComputer technology
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.