Portable GPS type distance/speed meter capable of changing sampling period of GPS signal in response to arm swinging period

Abstract

A portable type distance/speed meter is designed for measuring a travel distance and a travel speed in response to GPS electromagnetic waves received by a GPS receiver. The portable type distance/speed meter is arranged by: a GPS (Global Positioning System) receiver for receiving GPS electromagnetic waves transmitted from GPS satellites to acquire positioning data from the received GPS electromagnetic waves in a predetermined sampling period; travel speed calculating means for calculating a travel speed of a user based upon the positioning data; timer means for measuring travel time of the user at the travel speed; travel distance calculating means for calculating a travel distance of the user based upon both the travel speed calculated by the travel speed calculating means and the travel time measured by the timer means; average travel speed calculating means for calculating an average travel speed of the user based upon the travel speed calculated by the travel speed calculating means; motion detecting means for detecting motion produced while the user walks, or runs to thereby output the motion detecting result as a motion signal; and sampling period changing means for entering the motion signal outputted from the motion detecting means, for changing the sampling period based upon the entered motion signal.

Dependencies are inferred from the claim text.