Patent Number: 6,297,751

Title: Low-voltage joystick port interface

Abstract: The joystick port interface includes an integrated circuit receiving ananalog joystick position measurement signal and outputting a digital pulsesignal to a processor which signifies a joystick coordinate value. Theintegrated circuit includes a pulse generator and a bidirectional buffercircuit. The bidirectional buffer circuit receives the analog joystickposition measurement signal and selectively discharges an RC networkcapacitor which provides this analog measurement. This implementationprovides a joystick port which uses low-voltage CMOS VLSI structures whichcan interface a conventional high-voltage joystick with the processor.

Inventors: Fadavi-Ardekani; Jalil (Newport Coast, CA), Livingston; Raymond S. (Bonny Doon, CA), Niescier; Richard J. (Bethlehem, PA), Potts; David L. (Royersford, PA)


International Classification:

Expiration Date: 10/02/2013