US 12,138,021 B2
Biometric data measurement system and biometric data measurement method
Yasuhiro Kawabata, Kyoto (JP); Kenji Fujii, Kyoto (JP); Naomi Matsumura, Kyoto (JP); Reiji Fujita, Kyoto (JP); and Akito Ito, Kyoto (JP)
Assigned to OMRON HEALTHCARE CO., LTD., Kyoto (JP); and OMRON CORPORATION, Kyoto (JP)
Filed by OMRON HEALTHCARE Co., Ltd., Kyoto (JP); and OMRON Corporation, Kyoto (JP)
Filed on Jan. 12, 2021, as Appl. No. 17/146,966.
Application 17/146,966 is a continuation of application No. PCT/JP2019/026085, filed on Jul. 1, 2019.
Claims priority of application No. 2018-137109 (JP), filed on Jul. 20, 2018.
Prior Publication US 2021/0127994 A1, May 6, 2021
Int. Cl. A61B 5/021 (2006.01); G06F 3/01 (2006.01); G06V 40/10 (2022.01); G06V 40/50 (2022.01)
CPC A61B 5/02125 (2013.01) [G06F 3/015 (2013.01); G06V 40/50 (2022.01); G06F 2218/16 (2023.01); G06V 40/15 (2022.01)] 6 Claims
OG exemplary drawing
 
1. A biometric data measurement system, comprising:
a transmitting device including:
measurement circuitry configured to measure a first biometric data;
a first processor configured to set a first reference time corresponding to an occurrence time of a first feature value of the first biometric data; and
a transmitter configured to transmit a signal at a time when a predetermined first time period has elapsed since the first reference time, the predetermined first time period being a fixed period of time for detecting the first feature value,
wherein the first processor is further configured to switch the transmitter to a transmittable state where the transmitter receives first high power so as to be capable of transmitting the signal prior to the time when the predetermined first time period has elapsed and switch the transmitter to a non-transmittable state where the transmitter receives first low power or no power for power savings so as to be incapable of transmitting the signal after the time when the predetermined first time period has elapsed, the first high power being higher than the first low power; and
a receiving device including:
a sensor configured to measure a second biometric data;
a second processor configured to set a second reference time corresponding to an occurrence time of a second feature value of the second biometric data; and
a receiver configured to maintain an awaiting state for the signal during a third time period from a time when a second time period has elapsed since the second reference time,
wherein the second processor is further configured to switch the receiver to the awaiting state where the receiver receives second high power so as to be capable of receiving the signal at the time when the second time period has elapsed and switch the receiver to a non-receivable state where the receiver receives second low power or no power for power savings so as to be incapable of receiving the signal at an end of the third time period, the second high power being higher than the second low power, and
wherein the second processor is further configured to calculate a fourth time period from the second reference time to a reception time of the signal and calculate a pulse transit time (PTT) on the basis of a time difference between the first time period and the fourth time period.