Pulse wave detector
AssigneePanasonic Corporation
InventorsTakuya Hayashi, Katsumi Imada, Susumu Fukushima
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Abstract
A pulse wave detector includes a) a light source repeatedly turned on and off, b) a light receiving element for receiving light, and c) an arithmetic processor for processing an output value acquired through the light receiving element. The arithmetic processor performs arithmetic processing for calculating the difference between a first output value acquired through the light receiving element when the light source is turned on and a second output value acquired through the light receiving element when the light source is turned off. With this structure, a pulse wave detector capable of detecting pulse waves even under the conditions where external light intensity varies can be provided.
Claims6
A pulse wave detector comprising:
- a) a light source repeatedly turned on and off;
- b) a light receiving element for receiving light;
- and
- c) an arithmetic processor for processing an output value acquired through the light receiving element,
- wherein the arithmetic processor performs arithmetic processing for calculating a difference between a first output value acquired through the light receiving element when the light source is turned on and a second output value acquired through the light receiving element when the light source is turned off.
Dependencies are inferred from the claim text.