Data transmission system using electronic apparatus having a plu

Details Data transmission system using electronic apparatus having a plu Data transmission system using electronic apparatus having a plu

1994-03-22

1996-12-03

Bowler, Alyssa H.

Boots, shoes, and leggings

395831, 3642408, 36494081, 235380, 902 26, G06F 1342, G06K 1902

Patent

active

055817084

ABSTRACT:
In a data transmission system, a card reader/writer provided in a terminal device and an IC card are connected through a contact unit, the IC card is started in response to a signal from the terminal device via the card reader/writer, and transmission/reception of data is subsequently performed. In this data transmission system, the IC card has a CPU for outputting a predetermined answer-to-reset data after the IC card is started and controlling at least two protocols, and a memory for storing protocol type information for determining a protocol to be used from the protocols. The control unit is operated upon starting the IC card, renews the protocol type information in outputting the answer-to-reset data, and returns the renewed protocol type information to an initial one in response to transmission/reception of the data.

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