Patent Document ID: 9848823
Application ID: 14812870
Patent Status: 1

Claim One:
1. A method of determining a heart rate of a user, the method comprising, by a wearable device: generating, using a pulse sensor of the wearable device, a sequence of heart rate data samples; determining, using the sequence of heart rate data samples, a direct heart rate estimate; determining an activity context of the wearable device, the activity context including a physical activity in which the user is engaged and an intensity of the physical activity; generating, based in part on the activity context and in part on a user-specific parameter, a modeled heart rate estimate, the modeled heart rate estimate being based on a physiological model of heart rate response to the activity context and generated independently of the sequence of heart rate data samples; and determining a final heart rate estimate based on the direct heart rate estimate and the modeled heart rate estimate.