Patent ID: 8682420

Claim:
A heartbeat measuring device comprising: a measurement unit that measures a heart rate of a user; an information storage unit that stores unique information regarding a heart rate unique to the user or information regarding a detected heartbeat of the user, the unique information including at least one of an exercise frequency and an exercise event of the user; a determination unit that determines whether or not a heartbeat measurement state of the user is normal on the basis of the unique information or the information regarding a heartbeat stored in the information storage unit; and a threshold value calculation unit that calculates a threshold value of a heart rate for determining whether or not a heart rate of the user is a normal value on the basis of the unique information stored in the information storage unit and the heart rate measured by the measurement unit, the threshold value calculation unit being configured to perform a number of measurements for obtaining an average value of heart rates on the basis of at least one of the exercise frequency and the exercise event of the user, and being configured to calculate the threshold value on the basis of the unique information and the obtained average value of heart rates.