Portable biometric monitoring devices having location sensors

摘要

Assisted-GPS for a portable biometric monitoring device is provided. The portable biometric monitoring device may obtain updated ephemeris data from an associated secondary device via a short-range, low-power communication protocol. The secondary device may be a computing device such as a smartphone, tablet, or laptop. Various rules may control when the ephemeris data is updated. The ephemeris data may be used in the calculation of the global position of the portable biometric monitoring device. Additionally, the portable biometric monitoring device may communicate downloaded position fixing data to the associated secondary device. The associated secondary device may then calculate the global position from the position fixing data.

主权项

1. A method of determining a global position of a worn biometric monitoring device with a memory configured to store ephemeris data, the method comprising:
(a) determining that the worn biometric monitoring device does not have stored updated ephemeris data in the memory; and (b) responsive to (a), obtaining updated ephemeris data via a wireless short-range, low-power communication protocol from a secondary device associated with the worn biometric monitoring device, obtaining a last calculated global position of the associated secondary device, and storing the updated ephemeris data in the memory, wherein the updated ephemeris data originated from a server configured to serve updated ephemeris data.