Biosensor device
First Claim
1. A biosensor device comprising:
- at least one pair of electrocardiographic electrodes that detect electrical signals of a living body;
a respective insulating film disposed on each electrode of the at least one pair of electrocardiographic electrodes, each respective insulating film having a living body contact surface;
a light emitter configured to emit light to the living body;
a light receiver configured to receive reflected light from the living body; and
a processor circuit that generates an electrocardiographic signal by differentially amplifying the electrical signals of the living body, and generates a photo-plethysmographic signal based on the light emitted from the light emitter and the reflected light received by the light receiver,wherein at least one electrode of the at least one pair of electrocardiographic electrodes is a light transmissive electrocardiographic electrode comprising an electroconductive material having light transparency in a wavelength range of the light emitted from the light emitter, and the insulating film disposed on the light transmissive electrocardiographic electrode is a light transmissive insulating film comprising an insulating material having light transparency in the wavelength range of the light emitted from the light emitter.
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Accused Products
Abstract
A biosensor that includes a light transmissive electrocardiographic electrode and a light transmissive insulating film that detect an electrical signal relating to an electrocardiographic signal through capacitive coupling that are disposed above light emitting elements and a light receiving element that detect an optical detection signal relating to a photo-plethysmographic signal. When a user brings a finger into contact with a contact surface of the light transmissive insulating film, the electrical signal relating to the electrocardiographic signal is detected by the light transmissive electrocardiographic electrode. At the same time, reflected light emitted from the light emitting elements after being reflected from the user'"'"'s finger are received by the light receiving element to detect an optical detection signal corresponding to the received reflected lights so that biological information is generated based on both the electrocardiographic signal and a photo-plethysmographic signal.
14 Citations
16 Claims
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1. A biosensor device comprising:
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at least one pair of electrocardiographic electrodes that detect electrical signals of a living body; a respective insulating film disposed on each electrode of the at least one pair of electrocardiographic electrodes, each respective insulating film having a living body contact surface; a light emitter configured to emit light to the living body; a light receiver configured to receive reflected light from the living body; and a processor circuit that generates an electrocardiographic signal by differentially amplifying the electrical signals of the living body, and generates a photo-plethysmographic signal based on the light emitted from the light emitter and the reflected light received by the light receiver, wherein at least one electrode of the at least one pair of electrocardiographic electrodes is a light transmissive electrocardiographic electrode comprising an electroconductive material having light transparency in a wavelength range of the light emitted from the light emitter, and the insulating film disposed on the light transmissive electrocardiographic electrode is a light transmissive insulating film comprising an insulating material having light transparency in the wavelength range of the light emitted from the light emitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A biosensor device comprising:
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at least one pair of electrocardiographic electrodes that detect electrical signals of a living body; a respective insulating film disposed on each electrode of the at least one pair of electrocardiographic electrodes, each respective insulating film having a living body contact surface; at least two light emitting elements configured to each emit light in different wavelength ranges to the living body; a light receiver configured to receive reflected light from the living body; a processor circuit including an electrocardiographic signal detection unit that generates an electrocardiographic signal by differentially amplifying the electrical signals of the living body detected by the at least one pair of electrocardiographic electrodes, and a photo-plethysmographic signal detection unit that generates a photo-plethysmographic signal based on the light emitted from the light emitter and the reflected light received by the light receiver; a base plate on which the at least two light emitting elements, the light receiver, and at least part of the processor circuit are mounted; a peripheral wall reflector positioned around each of the at least two light emitting elements and the light receiver; and at least one clamp circuit including at least one high-impedance element connected to the electrocardiographic signal detection unit, wherein a potential at a connected end of the clamp circuit is held constant, and an impedance at the connected end of the electrocardiographic signal detection unit is larger than an impedance of the clamp circuit, wherein at least one electrode of the at least one pair of electrocardiographic electrodes is a light transmissive electrocardiographic electrode made of an electroconductive material having light transparency in a wavelength range of the light emitted from each of the at least two light emitting elements, the respective insulating film disposed on the light transmissive electrocardiographic electrode is a light transmissive insulating film made of an insulating material having light transparency in the wavelength range of the light emitted from each of the at least two light emitting elements. - View Dependent Claims (15, 16)
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Specification