Patent ID: 9280215
Filing Date: 2016-03-08
CPC Classification: G06F

Claim Text:
1. A position tracing system comprising: a plurality of ultrasonic wave reception units where ultrasonic wave reception sensors receiving an ultrasonic wave signal generated by a signal generation device are installed; and a main body configured to include a position measurement unit which measures a position of the signal generation device or generates information for position measurement of the signal generation device by using a distance between the ultrasonic wave reception sensors installed in the ultrasonic wave reception units and a difference between reception times of the ultrasonic wave signal in the ultrasonic wave reception sensors and a main housing which contains the position measurement unit, wherein the ultrasonic wave reception units are coupled with the main housing so that the distance between the ultrasonic wave reception sensors included in the ultrasonic wave reception units can be adjusted by user's manipulation.