PHOTOELECTRIC KEYBOARD AND CONTROL METHOD FOR PHOTOELECTRIC KEYBOARD

摘要

PROBLEM TO BE SOLVED: To provide a photoelectric keyboard and a control method for the photoelectric keyboard capable of detecting one operation of a key by a simple and positive method without causing the danger of erroneously detecting a key adjacent to an operated key, as the operated key. SOLUTION: A central control evaluation circuit is provided, and light transmitters are connected to the central control evaluation circuit. The light transmitters are temporally controlled by the central control evaluation circuit so that only one of the mutually adjacent light transmitters is active.