초록 ▼

A position control system is described for the control of cursor movement on a video display terminal or the like. The control system includes a wireless movable steering means which emits acoustic signals, tracking means adapted to receive the acoustic signals and determine the position of the stee

A position control system is described for the control of cursor movement on a video display terminal or the like. The control system includes a wireless movable steering means which emits acoustic signals, tracking means adapted to receive the acoustic signals and determine the position of the steering means by hyperbolic triangulation, and communication means for communicating the position (either absolute position or relative movement) of the steering means to the video display terminal.

대표청구항 ▼

A position control system adapted to control cursor movement on a video display terminal, said system comprising: (a) a wireless movable steering means adapted to emit periodic acoustic signals; (b) tracking means adapted to receive said acoustic signals and determine the position of said steering m

A position control system adapted to control cursor movement on a video display terminal, said system comprising: (a) a wireless movable steering means adapted to emit periodic acoustic signals; (b) tracking means adapted to receive said acoustic signals and determine the position of said steering means; wherein said tracking means comprises a plurality of acoustic receivers adapted to sense said acoustic signals; wherein said tracking means further comprises processing means adapted to measure the time difference of the sensing of said acoustic signals by said receivers and being further adapted to convert said time difference into a coordinate position of said steering means; and (c) communication means adapted to communicate said position of said steering means to said video display terminal; wherein said steering means is adapted to communicate with said tracking means solely by means of acoustical signals.