Fingerprint input apparatus
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United States of America Patent
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Oct 9, 2012
Grant Date -
Aug 18, 2005
app pub date -
Feb 11, 2005
filing date -
Feb 12, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fingerprint input apparatus for providing a plurality of inputs while moving a finger to acquire a fingerprint image, the fingerprint input apparatus determining an intersection of the plurality of input partial fingerprint images to calculate a relative location between the plurality of partial fingerprint images on the basis of the intersection and outputting the calculated relative location with the plurality of partial fingerprint images to an external device. The intersection of the plurality of partial fingerprint images is obtained, for example, on the basis of a density distribution of dots constituting each of the image. The relative location is at least one of the moving direction, the moving distance, and the angle of rotation. Thereby, there is no movable part and thus it eliminates a need for providing the external device with software processing for calculating the relative location of the partial fingerprint images, thereby achieving downsizing and power saving of the apparatus.
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