Patent · US Expired

Device for processing and storing data received from either a contactless interface or an interface having contacts

US5875450A · kind A · utility

7Cited by

4References

9Claims

0Family size

Assignees

Siemens Aktiengesellschaft · DE
U.S. Philips Corporation · US

Inventors

Robert Reiner · Neubiberg, DE
Joachim Weitzel · Markt Indersdorf, DE
Heiko Fibranz · Hersbruck, DE
Gerhard Schraud · Mering, DE
Walter Strubel · Hanerau-Hademarschen, DE
Dominik Berger · Graz, AT
Wolfgang Eber · Zeltweg, AT
Gerald Holweg · Graz, AT

Key dates

Filing date	Feb 5, 1997
Grant date	Feb 23, 1999
Priority date	—
Expiry date	Feb 5, 2017

Classification

Technology area (CPC G)Physics
CPC primaryG06K19/077
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A device for processing and storing data, in particular a chip card, includes a first interface with contacts and a second contactless interface for receiving energy or power from and for communication with a terminal device. A first controllable switching device connects either the first or the second interface to a non-volatile semiconductor memory through address, data and control lines. A logic circuit drives the first controllable switching device. A second controllable switching device disposed between the first controllable switching device and the memory can be driven at least by the logic circuit and an address signal present on the address lines.

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