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Consumer Sleep Technology
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Application US20200297270
Published 2020-09-24
Biometric Apparatus, Biometric Method, And Determination Apparatus
A biometric apparatus includes a first detector that detects and outputs a brain activity signal indicating a state of brain activity in a target person, and a signal processing circuit. The signal processing circuit acquires the brain activity signal, acquires a biological signal of the target person that is different from the brain activity signal, determines, based on the biological signal and the brain activity signal, whether a state of the target person is an awake state, a sleeping state, or an unconscious state, and generates and outputs a signal indicating the state of the target person.
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- 1. A biometric apparatus comprising:
a first detector that detects and outputs a brain activity signal indicating a state of brain activity in a target person; and a signal processing circuit, wherein the signal processing circuit
acquires the brain activity signal,
acquires a biological signal of the target person that is different from the brain activity signal,
determines, based on the biological signal and the brain activity signal, whether a state of the target person is an awake state, a sleeping state, or an unconscious state, and
generates and outputs a signal indicating the state of the target person.
- 16. A biometric method comprising:
acquiring a brain activity signal of a target person; acquiring a biological signal of the target person that is different from the brain activity signal; and determining, based on the biological signal and the brain activity signal, whether a state of the target person is an awake state, a sleeping state, or an unconscious state.
- 28. A determination apparatus comprising:
one or more memories; and a circuit that, in operation,
acquires a brain activity signal of a target person,
acquires a biological signal of the target person that is different from the brain activity signal, and
determines, based on the biological signal and the brain activity signal, whether a state of the target person is an awake state, a sleeping state, or an unconscious state.
- 29. A biometric apparatus comprising:
a light source that emits a light pulse irradiating a head of a target person; a photodetector that detects at least a part of a reflected light pulse returning from the head; a control circuit that controls the light source and the photodetector; and a signal processing circuit, wherein the control circuit
causes the light source to emit the light pulse,
causes the photodetector to detect and output an internal scattering component scattered inside a brain of the target person from the reflected light pulse as a brain activity signal, and
causes the photodetector to detect and output a surface reflection component reflected at a surface of a skin of the target person from the reflected light pulse as a biological signal different from the brain activity signal, and
the signal processing circuit generates and outputs a signal indicating a state of the target person based on the biological signal and the brain activity signal.
