US 9,808,197 B2
Electronic apparatus and control method
Takaya Matsuno, Tokyo (JP); Takashi Sudo, Tokyo (JP); and Yasuhiro Kanishima, Tokyo (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP)
Filed by Kabushiki Kaisha Toshiba, Minato-ku, Tokyo (JP)
Filed on Feb. 27, 2015, as Appl. No. 14/633,994.
Claims priority of application No. 2014-172409 (JP), filed on Aug. 27, 2014.
Prior Publication US 2016/0058374 A1, Mar. 3, 2016
Int. Cl. A61B 5/1455 (2006.01); A61B 5/00 (2006.01); A61B 5/11 (2006.01); A61B 5/024 (2006.01)
CPC A61B 5/681 (2013.01) [A61B 5/02438 (2013.01); A61B 5/14552 (2013.01); A61B 5/7285 (2013.01); A61B 5/02427 (2013.01); A61B 5/11 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A wearable electronic apparatus, comprising:
a plurality of light emitters including a first LED, a second LED, a third LED and a fourth LED, the first LED emitting red light, the second LED emitting infrared light, the third LED and the fourth LED emitting light different from the light emitted by the first LED and the second LED, and having wavelengths different from each other;
a light receiver to receive reflected light or transmitted light emitted from the light emitters, the reflected light from a human body wearing the apparatus, the transmitted light passing through the human body;
a sensor to detect movement of the human body wearing the apparatus; and
a CPU configured to execute various programs including a physiological information acquisition program,
wherein the CPU is configured to:
two light emitters including the first LED which emits red light and the second LED which emits infrared light to emit light when the magnitude of the movement detected by the sensor is less than a threshold value, and acquire physiological information of the human body based on an output signal from the light receiver which receives the reflected light or the transmitted light; and;
cause four light emitters including the first LED which emits red light, the second LED which emits infrared light, and the third LED and the fourth LED which emit light different from the light emitted by the first LED and the second LED, and having wavelengths different from each other to emit light when the magnitude of the movement detected by the sensor is greater than or equal to the threshold value, and acquire the physiological information of the human body based on an output signal from the light receiver which receives the reflected light or the transmitted light.