Patent · US Active

Method for the data exchange between a terminal and a chip card

US9588930B2 · kind B2 · utility

3Cited by

3References

15Claims

0Family size

Assignee

GIESECKE & DEVRIENT GMBH · DE

Inventors

Bernhard Büttner · Germering, DE
Robert Griesmeier · Hanerau-Hademarschen, DE
Karl Eglof Hartel · Birkenfeld, DE

Key dates

Filing date	May 8, 2012
Grant date	Mar 7, 2017
Priority date	—
Expiry date	Apr 27, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG07F7/0893
WIPO fieldComputer technology
WIPO sectorElectrical engineering

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.

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