Biometric authentication device, biometric authentication method, and storage medium
First Claim
1. A biometric authentication device comprising:
- 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, the received response signal being in response to the transmitted signal that is based on the generated signal pattern;
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, whereinthe signal pattern generating unit is configured to change the signal pattern every time the signal pattern generating unit generates the signal pattern.
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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.
38 Citations
15 Claims
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1. 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, the received response signal being in response to the transmitted signal that is based on the generated signal pattern; 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 (2, 3, 4, 5, 6, 7, 8, 9)
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10. 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, the received response signal being in response to the transmitted signal that is based on the generated signal pattern; 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 (11, 12, 13, 14)
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15. 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, and wherein the received response signal is in response to the transmitted signal.
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Specification