STEP-LENGTH CALCULATING DEVICE, PORTABLE TERMINAL, POSITION-INFORMATION PROVIDING SYSTEM, STEP-LENGTH CALCULATING DEVICE CONTROL METHOD, AND PROGRAM

摘要

A step-length calculating device that calculates a step length of a user without performing complicated processing is realized. A step-length calculating device comprises: a height-difference calculating unit that calculates a height difference of the step-length calculating device at two particular time points by using vertical-direction accelerations of the step-length calculating device, the accelerations being detected by a triaxial acceleration sensor; and a step-length calculating unit that calculates a step length of the user from the height difference and a leg length of the user.