Patent · US Active

Controlled wireless charging of an accumulator in a chipcard

US8594567B2 · kind B2 · utility

11Cited by

22References

23Claims

0Family size

Assignee

GIESECKE & DEVRIENT GMBH · DE

Inventors

Klaus Finkenzeller · Unterföhring, DE
Werner Ness · Unterschleißheim, DE

Key dates

Filing date	Aug 11, 2005
Grant date	Nov 26, 2013
Priority date	—
Expiry date	Aug 5, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH02J50/80
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Method, apparatus and system for contactless charging of an energy storage unit of an energy sink (2) by an energy source (1). Data are transferred between the energy source and the energy sink via an alternating field in a first operating mode of the energy source. In a second operating mode of the energy source, an energy necessary for charging is transferred from the energy source to the energy sink via the alternating field. In the second operating mode, no data are transferred from the energy source to the energy sink and the alternating field is therefore produced with a field strength that is greater than a possible field strength upon simultaneous transfer of data and charging energy.

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