UTILIZING A MOBILE DEVICE AS A MOTION-BASED CONTROLLER

摘要

A method, system and computer program product for accurately tracking the position of a mobile device. The microphone on a mobile device receives acoustic signals at a few selected frequencies from a device to be controlled by the mobile device. The frequency shifts are used to estimate the speed and distance traveled. The distance between the speakers of the device to be controlled is calibrated and the mobile device's initial position is narrowed down using its movement trajectory. Based on the information, the mobile device's new position is continuously tracked in real time. Hence, movement of the mobile device can be accurately tracked, thereby allowing the mobile device to be realized as a motion-based controller (e.g., mouse, game controller, controller for Internet of Things).