Kabushiki Kaisha Komatsu Seisakusho

Masatake Hirooka

Toru Suzuki

Mitsuo Hosoi

Tomoo Matsuda

Yukitaka Takitani

Naoya Tsurumaki

Shigenori Torihata

Hisaakira Imaizumi

Yokichi Nishi

The data input device comprises a tablet portion made of a two-dimensional position-sensitive photodetector and a planar display element laid one on the other, and a light emitting pen forming a light spot on a light-receiving surface of the position-sensitive photodetector. The locus of the movement of the light emitting pen is displayed on the surface of the planar display element at correspond positions in accordance with the output of the two-dimensional position-sensitive photodetector, and the contents of the display provided on the planar displaying element are allowed to be delivered for subsequent processings.

Position-sensitive photodetector and light transmissive tablet and

Growing community of inventors

Isehara, Japan

Masatake Hirooka