Fingerprint image acquisition apparatus and method thereof
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United States of America Patent
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Jan 31, 2006
Grant Date -
Aug 15, 2002
app pub date -
Feb 14, 2002
filing date -
Feb 14, 2001
priority date (Note) -
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Abstract
A fingerprint image acquisition apparatus of the present invention includes fingerprint sensing device unit, a CCD device unit, and an image processing unit, the image processing unit comprising: an A/D converting unit for converting and outputting the fingerprint image outputted from the CCD device unit into a digital signal; an image buffer for storing the digital signal from the A/D converting unit; a controller for watching a state of the image buffer, i.e., whether the fingerprint image is inputted and stored to the image buffer, and storing the fingerprint image to a video memory if the storage of the fingerprint image is confirmed; a process executed by the controller, for dividing the fingerprint image into a plurality of unit blocks with a predetermined size; and a process executed by the controller, for dividing the fingerprint image as a center region and a peripheral region, each including a predetermined number of unit blocks, and subdividing the unit block of the center region into at least two or more subdivided blocks.
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