BIOMETRIC AUTHENTICATION DEVICE, BIOMETRIC AUTHENTICATION METHOD, AND STORAGE MEDIUM
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Accused Products
Abstract
Provided is a biometric authentication device that can enhance usability, suppress deterioration of authentication accuracy due to ambient noise, and increase tolerance to wiretapping. A biometric authentication device generates a signal pattern toward a living body by using a signal pattern generating means 11, and transmits the signal pattern to the living body in accordance with the signal pattern by a signal transmitting means 12. Further, the device receives a response signal transmitted through the living body by a signal receiving means 13. The device then calculates transfer feature in accordance with the signal pattern and the response signal by a transfer feature calculating means 14. Further, the device extracts and collates a feature amount in accordance with the transfer features.
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Citations
33 Claims
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1-18. -18. (canceled)
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19. A biometric authentication device comprising:
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a signal pattern generating unit that generates a signal pattern of a signal transmitted to a living body; a signal transmitting unit that transmits a signal to the living body based on the signal pattern from the signal pattern generating unit; a signal receiving unit that receives a response signal transmitted from the living body; a transfer feature calculating unit that calculates a transfer feature of a signal transmitted through the living body based on the signal pattern from the signal pattern generating unit and the response signal received by the signal receiving unit; a feature amount extracting unit that extracts a feature amount based on the transfer feature that is calculated, the feature amount varying for every living body; and a feature amount collating unit that collates the extracted feature amount with a feature amount stored in a feature amount storing unit in advance, wherein the signal pattern generating unit is configured to change the signal pattern every time the signal pattern generating unit generates the signal pattern. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A biometric authentication method comprising:
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a signal pattern generating process that generates a signal pattern of a signal transmitted to a living body; a signal transmitting process that transmits a signal to the living body based on the signal pattern generated by the signal pattern generating process; a signal receiving process that receives a response signal transmitted from the living body; a transfer feature calculating process that calculates a transfer feature of a signal transmitted through the living body based on the signal pattern generated by the signal pattern generating process and the response signal received by the signal receiving process; a feature extracting process that extracts a feature amount based on the transfer feature that is calculated, the feature amount varying for every living body; and a feature amount collating process that collates the extracted feature amount with a feature amount stored in a feature amount storing unit in advance, wherein the signal pattern is changed every time the signal pattern is generated in the signal pattern generating process. - View Dependent Claims (29, 30, 31, 32)
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33. A storage medium that stores a biometric authentication program making a biometric authentication device comprising a signal transmitting unit that transmits a signal to a living body and a signal receiving unit that receives a response signal transmitted through the living body to perform biometric authentication based on the response signal achieve the following:
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a signal pattern generating unit that generates a signal pattern of a signal transmitted to the living body and outputs the signal pattern that is generated to the signal transmitting unit; a transfer feature calculating unit that calculates a transfer feature of a signal transmitted through the living body based on the signal pattern from the signal pattern generating unit and the response signal received by the signal receiving unit; a feature amount extracting unit that extracts a feature amount based on the transfer feature that is calculated, the feature amount varying for every living body; and a feature amount collating unit that collates the extracted feature amount with a feature amount stored in a feature amount storing unit in advance, wherein the signal pattern generating unit achieves change of the signal pattern every time the signal pattern generating unit generates the signal pattern.
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Specification