Biometric authentication device and biometric authentication method
First Claim
1. A biometric authentication device for carrying out biometric authentication using biometric information by collating pre-registered biometric data for authentication with biometric data acquired during authentication, the device comprising:
- a housing that defines a finger inserting section;
a near-infrared light source configured to irradiate a finger in the finger inserting section with near-infrared light;
a visible light source configured to irradiate the finger inserting section with visible light;
a camera configured to capture a first image of the finger in the finger inserting section with the near-infrared light which penetrates through the finger while the visible light source irradiates the finger inserting section with the visible light;
a memory configured to store the pre-registered biometric data and a predetermined luminosity; and
a processor programmed by executable instructions to acquire biometric data from the first image,wherein the visible light source is configured to start irradiation of the visible light before the camera captures the image, andwhen a luminosity of the acquired biometric data from the first image is higher than the predetermined luminosity, the processor is further programmed by the executable instructions to;
lower an irradiation luminosity from the visible light sourcecause the camera to capture a second image of the finger in the finger inserting section with the near-infrared light which penetrates through the finger while the visible light source irradiates the finger inserting section with the lowered visible light from the visible light source,acquire biometric data from the second image, andcollate the acquired biometric data from the second image with the pre-registered biometric data for authentication.
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Accused Products
Abstract
A biometric authentication device collates pre-registered biometric data for authentication with biometric data acquired during authentication. An imaging section images biometric data acquired by penetration through the finger by near-infrared light from a near-infrared light irradiating section. A control section acquires the biometric data acquired by the imaging section. A visible light irradiating section irradiates a finger inserting section where the finger is inserted with visible light. The visible light irradiating section starts irradiation of the visible light before the imaging section acquires the biometric data. The control section sets irradiation luminosity from the visible light irradiating section to be lower in a case where luminosity of an imaging screen of the biometric data acquired by the imaging section is higher than luminosity appropriate for authentication, and collates the biometric data in the case where the irradiation luminosity is set to be lower with the pre-registered biometric data for authentication.
60 Citations
8 Claims
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1. A biometric authentication device for carrying out biometric authentication using biometric information by collating pre-registered biometric data for authentication with biometric data acquired during authentication, the device comprising:
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a housing that defines a finger inserting section; a near-infrared light source configured to irradiate a finger in the finger inserting section with near-infrared light; a visible light source configured to irradiate the finger inserting section with visible light; a camera configured to capture a first image of the finger in the finger inserting section with the near-infrared light which penetrates through the finger while the visible light source irradiates the finger inserting section with the visible light; a memory configured to store the pre-registered biometric data and a predetermined luminosity; and a processor programmed by executable instructions to acquire biometric data from the first image, wherein the visible light source is configured to start irradiation of the visible light before the camera captures the image, and when a luminosity of the acquired biometric data from the first image is higher than the predetermined luminosity, the processor is further programmed by the executable instructions to; lower an irradiation luminosity from the visible light source cause the camera to capture a second image of the finger in the finger inserting section with the near-infrared light which penetrates through the finger while the visible light source irradiates the finger inserting section with the lowered visible light from the visible light source, acquire biometric data from the second image, and collate the acquired biometric data from the second image with the pre-registered biometric data for authentication. - View Dependent Claims (2, 3, 4, 5)
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6. A biometric authentication method for carrying out biometric authentication using biometric information by collating pre-registered biometric data for authentication with biometric data acquired during authentication, the method comprising the steps of:
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irradiating visible light from a visible light source into a housing that defines a finger inserting section; irradiating a finger is disposed in the finger inserting section with near-infrared light from a near-infrared light source; capturing a first image of the finger in the finger inserting section with the near-infrared light which penetrates through the finger while the visible light source irradiates the finger inserting section with the visible light; acquiring biometric data from the first image; and when a luminosity of the acquired biometric data from the first image is higher than a predetermined luminosity, lowering an irradiation luminosity of the visible light, capturing a second image of the finger in the finger inserting section with the near-infrared light which penetrates through the finger while the visible light source irradiates the finger inserting section with the lowered visible light from the visible light source, acquiring biometric data from the second image, and collating the acquired biometric data from the second image with the pre-registered biometric data for authentication. - View Dependent Claims (7, 8)
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Specification