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US 11,109,812 B2Granted
Electrocardiogram (ECG) signal based authentication apparatus and method
AssigneesSamsung Electronics Co., Ltd., Korea Advanced Institute of Science and Technology
InventorsChisung Bae, Jin Woo Shin, Sung-Soo Ahn, Sang Joon Kim
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Abstract
An authentication apparatus includes one or more processors configured to temporally implement a neural network, used to extract a feature value from hidden nodes, that is connected to input nodes to which an electrocardiogram (ECG) signal is input so as to share a weight set with the input nodes, and to match the ECG signal and the extracted feature value to a user for registration.
Claims12
An authentication apparatus comprising:
- a calculator configured to calculate a first output value corresponding to an input electrocardiogram (ECG) signal by applying the input ECG signal to a first neural network, and calculate second output values corresponding to reference ECG signals by applying the reference ECG signals to a second neural network,
- wherein the first and second neural networks are at least temporally implemented by one or more processors, the first output value is provided as output from the first neural network, and the second output values are provided as outputs from the second neural network;
- an extractor configured to extract a number of second output values from the second output values based on the first output value;
- and
- a determiner configured to determine whether to authenticate a user associated with the input ECG signal based on a ratio of a number of the extracted second output values that are associated with a registered user to a total number of the extracted second output values.
2 more elements
A wearable device, comprising:
- a sensor configured to acquire an input electrocardiogram (ECG) signal from a body of a user in contact with the wearable device;
- a processor configured to:
- calculate a first output value corresponding to the input ECG signal by applying the input ECG signal to a first neural network, and calculate second output values corresponding to reference ECG signals by applying the reference ECG signals to a second neural network, wherein the first output value is provided as output from the first neural network and the second output values are provided as outputs from the second neural network;
- extract a number of second output values from the second output values based on the first output value;
- and
- authenticate the user based on a ratio of a number of the extracted second output values that are associated with a registered user to a total number of the extracted second output values;
- and
- a display configured to output an authentication result to the user.
5 more elements
Dependencies are inferred from the claim text.