Authenticating a user through fingerprint recognition
First Claim
1. A method for authenticating a user using fingerprint recognition in an electronic device, the method comprising:
- detecting, by a fingerprint sensor of the electronic device, a fingerprint input from the user by receiving detection signals for respective sample points across an area of the fingerprint input;
determining, by a processor, a signal-level-specific distribution of signal strengths of detection signals corresponding to the fingerprint input;
determining, by the processor, an accumulation pattern based on the signal-level-specific distribution;
determining, by the processor, a determination value by using the accumulation pattern; and
determining, by the processor, that the fingerprint input from the user is invalid, if the determination value falls outside a preset reference range.
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Accused Products
Abstract
Provided is a method for authenticating a user in an electronic device. In illustrative embodiments, a fingerprint input from the user is be detected by receiving detection signals for respective sample points across an area of the fingerprint input. A determination value may be computed, which represents a degree of distribution of the detection signals according to signal strengths. It is then determined whether the determination value falls outside a preset reference range. If the determination value falls outside the preset reference range, the method determines that the fingerprint input from the user is invalid.
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Citations
15 Claims
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1. A method for authenticating a user using fingerprint recognition in an electronic device, the method comprising:
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detecting, by a fingerprint sensor of the electronic device, a fingerprint input from the user by receiving detection signals for respective sample points across an area of the fingerprint input; determining, by a processor, a signal-level-specific distribution of signal strengths of detection signals corresponding to the fingerprint input; determining, by the processor, an accumulation pattern based on the signal-level-specific distribution; determining, by the processor, a determination value by using the accumulation pattern; and determining, by the processor, that the fingerprint input from the user is invalid, if the determination value falls outside a preset reference range. - View Dependent Claims (2, 3, 4, 5, 6, 13)
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7. An electronic device for authenticating a user using fingerprint recognition, the electronic device comprising:
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a fingerprint sensor configured to detect a fingerprint input from the user by receiving detection signals for respective sample points across an area of the fingerprint input; and a processor configured to; determine, a signal-level-specific distribution of signal strengths of detection signals corresponding to the fingerprint input, determine an accumulation pattern based on the signal-level-specific distribution, determine a determination value by using the accumulation pattern, and determine that the fingerprint input from the user is invalid, if the determination value falls outside a preset reference range. - View Dependent Claims (8, 9, 10, 11, 12, 14)
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15. An electronic device for authenticating a user using fingerprint recognition, the electronic device comprising:
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a fingerprint sensor configured to detect a fingerprint input from the user by receiving detection signals for respective sample points across an area of the fingerprint input; and a processor configured to; compute a determination value representing a degree of distribution of the detection signals about a mean according to signal strengths, determine whether the determination value falls outside a preset reference range with respect to the mean, and determine that the fingerprint input from the user is invalid, if the determination value falls outside the preset reference range.
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Specification