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:
Mar. 07, 2017
Filed:
May. 08, 2012
Bernhard Büttner, Germering, DE;
Robert Griesmeier, OT Heufeldmühle, DE;
Karl Eglof Hartel, Munich, DE;
Bernhard Büttner, Germering, DE;
Robert Griesmeier, OT Heufeldmühle, DE;
Karl Eglof Hartel, Munich, DE;
GIESECKE & DEVRIENT GMBH, Munich, DE;
Abstract
A method includes exchanging data between a chip card and a terminal in a contact-based manner via a contact field. The method comprises the steps of: activating a first contact assignment in response to a first communication protocol present on the contact field and occupying a first part of contact surfaces of the contact field; recognizing a change of the communication protocol from a first communication protocol to a second communication protocol with a protocol recognition unit in the chip card; and activating a second contact assignment in response to the recognized second communication protocol occupying a second part of contact surfaces of the contact field. The first and the second part of contact surfaces of the contact field are selected from an ISO-7816-2 contact field having a maximum of six contact surfaces and the second communication protocol requires at least two data lines.