Multi-functional electronic card capable of detecting removable cards
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United States of America Patent
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-
Nov 2, 2004
Grant Date -
Aug 14, 2003
app pub date -
Jul 31, 2002
filing date -
Feb 8, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multi-functional electronic card capable of detecting removable cards includes at least one functional device, a controller, a host interface, and a removable card interface. The host interface has a card detecting pin fixed at a level representing that a card is inserted. The removable card interface has an elastic switch connected to the device detecting pin of the controller. The controller detects event and status of a card insertion and removal by a level change of the device detecting pin for setting the event and status in a status register, and informs the host device through the host interface so that the host device reads the status register to determine whether the removable card is inserted or removed.
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