Tadaharu Kato

Keyboard instrument with touch responsive display unit

Keyboard musical instrument for exactly producing tones and hammer sensor varying output signal exactly representing physical quantity of hammer

Keyboard musical instrument faithfully reproducing original performance without complicated tuning and music data generating system incorporated therein

Easily installable optical position transducer and keyboard musical instrument having the same

Unbreakable and economical optical sensor array and keyboard musical instrument using the same

Light emitting unit operative at high coupling efficiency, optical sensor system and musical instrument using the same

Optical transducer having optical fiber plug transparent to curing light and non-transparent to sensing light

Musical instrument system capable of locating missing remote controller, musical instrument, remote controller and method use therein

Multicore optical fiber connector for enhancing uniformity of amount of incident light and optical sensor array using the same

Automatic player incorporated in keyboard musical instrument and plunger sensor for detecting motion of plunger