Wacom Co., Ltd.

Keiichi Siguyama

Azuma Murakami

Tsuguya Yamanami

Toshiaki Senda

Takahiko Funahashi

Akio Kikuchi

Kazuo Aoki

Nobuyuki Miyamori

Manabu Abe

The position on a surface of an implement including a tuned circuit with a predetermined resonant frequency is determined and displayed by an apparatus having a housing including the surface. A tablet in the housing includes coils arranged in two coordinate directions parallel to the surface. The coils are excited with AC energy having approximately the same frequency as the resonant frequency. The tuned circuit interacts with the AC energy to change the AC current flowing in the coils as a function of the implement on the tablet. An electronic two-coordinate direction display in the housing configured as a plate is superposed with and lies in a plane parallel to the tablet and the surface. The display responds to the change in AC current resulting from the interaction between the AC energy and the tuned circuit to indicate the position of the implement on the surface.

Position detecting device

Growing community of inventors

Saitama, Japan

Keiichi Siguyama