Terminal Selection Using Acoustic Triangulation Technique
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09
This article describes an acoustic triangulation technique for selecting one of several terminals located in acommon area. Piezoelectric transducers deployed in the common area can produce bursts of ultrasonic energy at different frequencies. By controlling the relative delays of bursts from different transducers, the bursts can be made to overlap in time at a given physical location within the common area. A terminal which hears overlapping bursts assumes it has been selected for communication with a master terminal. Wireless communication technology is used to allow a selected terminal to communicate with the master terminal. Fig.