Patent ID: 6160904
Filing Date: 2000-12-12
Classification: G06K

Abstract:
A finger irregularity information input apparatus comprising:a plurality of output electrodes arranged at regular intervals in a direction perpendicular to a longitudinal direction of a to-be-measured finger of a to-be-identified person, the finger having its irregularity measured, the output electrodes being brought into contact with the finger;in oscillator for outputting a signal of a predetermined frequency to each of the output electrodes;a switching unit for sequentially connecting the output terminal of the oscillator to each of the output electrodes;wherein when the oscillator supplies an output to one of the output electrodes, the switching unit grounds those of the output electrodes which are adjacent to the output electrode to be connected to the oscillator;an input electrode extending at an end along the direction in which the output electrodes are arranged, the input electrode being brought into contact with the finger; anda detecting device for detecting a capacitive coupling signal generated between the finger and the input electrode.