Surface Acoustic Wave Joystick
Original Publication Date: 1988-Jun-01
Included in the Prior Art Database: 2005-Feb-15
A technique is described whereby surface acoustic wave (SAW) concepts are implemented to a joystick or similar mechanism, so as to enable a computer to detect the pressure and position of an applied hand or finger. Discussed are three embodiments for implementing piezoelectric transducer SAW concepts, so as to produce a device which contains no internal moving parts. In prior art, the use of surface acoustic wave concepts to replace mechanical devices required several transmitters and receivers to provide a "touch-sensitive" mechanism.