Secure memory device for smart cards with a modem interface

Details Secure memory device for smart cards with a modem interface Secure memory device for smart cards with a modem interface

2003-10-30

2009-11-17

Hafiz, Tariq R. (Department: 2182)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Protocol

C379S090010

Reexamination Certificate

active

07620759

ABSTRACT:
A secure memory device for a smart card with a modem interface comprising a rewritable memory such as an EEPROM, a processing unit or a microprocessor, an on-chip oscillator, an ISO 7816 interface, a one-wire modem interface, and characterized in that both communication interfaces are bidirectional and share the same I/O terminal. The modem interface is exchanging data with the host in the form of a modulated signal by means of a card reader characterized by the absence of processing means.

REFERENCES:
patent: 5929414 (1999-07-01), Saitoh
patent: 6607136 (2003-08-01), Atsmon et al.
patent: 6687350 (2004-02-01), Landry et al.
patent: 2003/0046554 (2003-03-01), Leydier et al.

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