IC card
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 16, 1997
Grant Date -
N/A
app pub date -
Jul 31, 1995
filing date -
Mar 29, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In an IC card, a user area is set to have a first area in which a write password is made valid, and a second area in which a read password is made valid. When a write command for the first area is sent together with a password from a read/write apparatus, the password is collated with the write password. When a read command for the second area is sent together with a password, the password is collated with the read password. As a result of the collation, when the passwords are identical, the respective commands are executed.
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Cited Art Landscape
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