Fingerprint photographing system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 29, 1992
Grant Date -
N/A
app pub date -
Jul 26, 1991
filing date -
Jul 27, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fingerprint photographing system comprising: a prism having a detection surface where a finger is pressed thereon; a luminous source for irradiating light to the detection surface; a camera for detecting the light reflected upon the detection surface; and means for comparing the image before and after the finger is pressed upon the detection surface and for storing the image of fingerprint to a memory when the number of pixels of the image with a predetermined density difference is in the range of predetermined number.
First Claim
Family
International Classification(s)
Cited Art Landscape
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