Method for recognizing the position of a gaming device

Abstract

A method for recognizing the position of a wireless controller is applied to an interactive gaming device including a wireless controller, a main apparatus and a host. The main apparatus includes a first ultrasonic receiving module, a second ultrasonic receiving module and a third ultrasonic module which are arranged as a triangle shape. The wireless controller includes an ultrasonic transmitting module for sending an ultrasonic wave which is received by the ultrasonic receiving modules in order to obtain three ultrasonic wave transmission times. The main apparatus sends the ultrasonic wave transmission times to the host. The host calculates the ultrasonic wave transmission times and therefore recognizes the position of the wireless controller. When the wireless controller is moved, the host obtains plurality of coordinate values indicating the motion track of the wireless controller. The motion track of the wireless controller is shown in a display by monitoring the coordinate values.

1 . A method for recognizing the position of a wireless controller in a gaming system, comprising:
 sending out a wireless signal by a first communication module of a main apparatus and obtaining a start time by a first microcomputer of said main apparatus;   receiving said wireless signal by a second communication module of said wireless controller;   sending out an ultrasonic wave by an ultrasonic transmitting module of said wireless controller;   receiving said ultrasonic wave by a first ultrasonic receiving module, a second ultrasonic receiving module and a third ultrasonic receiving module of said main apparatus arranged as a predetermined triangle shape and obtaining at least three end times by said first microcomputer of said main apparatus;   calculating said start time and said end times by said first microcomputer of said main apparatus in order to obtain at least three transmission times of said ultrasonic wave between said ultrasonic transmitting module of said wireless controller and said ultrasonic receiving modules of said main apparatus;   receiving said transmission times and calculating beelines between said ultrasonic transmitting module of said wireless controller and said first ultrasonic receiving module, said second ultrasonic receiving module and said third ultrasonic receiving module by a host;   calculating the position of said wireless controller based on said beelines and given positions of said first ultrasonic receiving module, said second ultrasonic receiving module and said third ultrasonic receiving module.   
   
   
       2 . The method as claimed in  claim 1 , wherein the transmitting speed of said wireless signal is faster than the transmitting speed of said ultrasonic wave. 
   
   
       3 . The method as claimed in  claim 1 , further comprising:
 calculating a first position of said wireless controller;   calculating a second position of said wireless controller by said host after a predetermined time;   calculating a first motion speed of said wireless controller according said first position, said second position and said predetermined time;   calculating a third position of said wireless controller by said host after said predetermined time;   calculating a second motion speed of said wireless controller according said second position, said third position and said predetermined time;   testing whether said first motion speed and said second motion speed being greater than zero in order to determining motion direction of said wireless controller;   testing whether said second motion speed being greater than said first motion speed in order to determining acceleration status of said wireless controller.