Non-contact IC card
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United States of America Patent
Stats
-
Dec 14, 2004
Grant Date -
Jun 26, 2003
app pub date -
Nov 26, 2002
filing date -
Nov 29, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A non-contact IC card includes an information storage unit for storing information, a communication controller for controlling communication with an external device, and a loop antenna for transmitting and receiving a radio wave to and from the external device. The non-contact IC card further includes a changeover switch for changing a communication distance between the external device and the card, so that the cost and size of the card can be reduced. The non-contact IC card can be used both in a long-distance mode and in a contact mode, which ensures high security.
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