Modem equipped with a smartcard reader
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United States of America Patent
Stats
-
Jan 30, 2001
Grant Date -
N/A
app pub date -
Aug 13, 1997
filing date -
Sep 25, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to modems designed to allow transmission of data between a terminal (a personal computer or PC) and a network. To improve the operating versatility of a modem or its utilization by a smartcard, the modem is equipped according to the invention with a receptacle (80) for receiving a smartcard (120), with a connector (110) for this card and a card interface circuit (100), and the microcontroller (50) of the modem (the microcontroller controlling communication with the network when commanded by the PC) also controls the card interface circuit. This microcontroller thus constitutes the kernel of the modem and at the same time the kernel of a card reader. The communication with the card is effected by commands known as `AT` and the systematic prefix sequence `AT` (whereby the microcontroller recognizes that it has to carry out an operation) is followed by a second systematic prefix sequence if a communication operation between the terminal and the card is to be effected. The second prefix sequence is `+G`.
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