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US 9,319,598 B2Granted
Personal identification system
AssigneeHitachi, Ltd.
InventorsMiyuki Kono, Shin-ichiro Umemura, Takafumi Miyatake, Kunio Harada, Yoshitoshi Ito, Hironori Ueki
Life of this patent
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Abstract
A personal identification system, which uses a vein pattern of a finger, optimizes the amount of light of a light source based on a captured finger image and emphasizes the vein pattern during image processing for identification.
Claims3
A blood vessels pattern imaging device, comprising:
- a plurality of light sources for radiating light, the plurality of light sources being arranged in a grid-shaped manner;
- a surface region on which a hand of a human is positioned;
- an imaging unit for imaging a plurality of fingers of the hand upon the hand being positioned on the surface region;
- and
- a light amount adjusting unit for selecting one or more light sources for radiation from the plurality of light sources corresponding to each of the plurality of fingers, and adjusting an amount of light radiated from the one or more light sources in accordance with each of the plurality of fingers.
2 more elements
A blood vessels pattern imaging device, comprising:
- a plurality of light sources;
- a plurality of imaging units;
- a light amount adjusting unit for adjusting an amount of light radiated from each of the plurality of light sources, each of the plurality of imaging units being configured to image vessel patterns of one or more fingers of a hand positioned on a surface region respectively corresponding to the plurality of imaging units.
Dependencies are inferred from the claim text.