Title:
【発明の名称】座標入力装置
Document Type and Number:
Japanese Patent JP2583509
Kind Code:
B2
Abstract:
A coordinate input apparatus has a tablet (1) including X- and Y-direction position detecting portions having a multiplicity of loop coils arranged in parallel with one another in X- and Y-directions, respectively, the X- and Y-direction position detecting portions being superposed one on the other. The apparatus also has a position appointing device (2) incorporating a tuning circuit capable of making resonance with electric wave produced from one of the loop coils. The loop coils are successively selected in a one-by-one fashion and an A.C. signal of a predetermined frequency is supplied to the thus selected loop coil. The position appointed by the position appointing device is detected by sensing the induced voltage of a frequency substantially equal to the predetermined frequency of the A.C. voltage, through a processing by a suitable processing device (4). Since the position appointing device need not be connected to any stationary portion of the apparatus, the coordinates data can be input with a high degree of meneuverability and at a distinguished precision. It is also possible to display the data input through the position appointing device or the data transmitted thereto through a transmission line (9).
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Inventors:
HAGIWARA TERUYOSHI
TSUCHIDA YOICHI
KINO HIDEKI
TSUCHIDA YOICHI
KINO HIDEKI
Application Number:
JP14805587A
Publication Date:
February 19, 1997
Filing Date:
June 16, 1987
Export Citation:
Assignee:
WAKOMU KK
International Classes:
G06F3/041; G06F3/033; G06F3/046; G06F3/048; G06K11/06; (IPC1-7): G06F3/03; G06F3/03
Attorney, Agent or Firm:
Yoshitaka Yoshitaka