Apparatus and method for detecting step in a personal navigator

Details Apparatus and method for detecting step in a personal navigator Apparatus and method for detecting step in a personal navigator

2006-09-18

2009-12-29

Bolda, Eric (Department: 3663)

Data processing: measuring, calibrating, or testing

Measurement system

Accelerometer

C600S595000, C600S592000, C600S587000, C073S865400, C073S491000

Reexamination Certificate

active

07640134

ABSTRACT:
A step detecting apparatus and method in a personal navigator where acceleration signals in at least two directions are acquired from an accelerometer sensor, as a pedestrian moves. Variances of the acceleration signals are calculated and summed. The variance sum is compared with a threshold. If the variance sum is greater than the threshold, it is determined that a detected step is a walking step. If the variance sum is less than the threshold, it is determined that the detected step is a mark-time step.

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