| 摘要 |
PROBLEM TO BE SOLVED: To accurately detect a fingerprint image of a person's fingertip having individual differences, such as a dry skin or a fatty skin. SOLUTION: In this collation device, when an IC card 2 is inserted into an IC card reader 1, the IC card reader 1 reads a waiting time, parameters and fingerprint data specific to the user from the IC card 2, sets the parameters peculiar to the user to an A/D converting part 11B of a sensor chip 11, and sets the waiting time specific to the user to a timer 12A. When a finger 3 of the user is pressed against the sensor chip 11, the timer 12A is started, and the sensor chip 11 is started after a time of the timer 12A is up, to detect a fingerprint of the finger 3. The fingerprint data detected by the sensor chip 11 are collated with the fingerprint data from the IC card 2 to identify the user.
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