Multi-voltage IC card host
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 6, 1997
Grant Date -
N/A
app pub date -
Jul 21, 1995
filing date -
Jul 21, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic device has a host with a card-receiving slot, and can receive and operate with both low voltage (3 volts) and high voltage (5 volts) IC (integrated circuit) cards. The inner end of the slot has a voltage-discriminating first side, and has a switch (82, FIG. 5) with an actuator (80) lying at a location that is occupied by a discrimination key portion (69) that is present in a low voltage card but not a high voltage card. The electronic device has both lower and higher voltage circuits (124, 130) for energizing lower and higher voltage cards, and the type of card sensed by the switch determines which circuit is connected to contacts at the inner end of the slot.
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