Touch panel display

摘要

A system which can control a plurality of opto-matrix input devices. Each opto-matrix device uses multiplexed scanning of emitter/detector pairs under control of a separate computer. The output of the opto-matrix input device is analog data which is provided to the computer for conversion to digital by the computer. The computer then determines if a stylus is located in the opto-matrix field, and if so, determines the stylus location by analysis of the received data.