Title:
【発明の名称】座標入力装置
Document Type and Number:
Japanese Patent JP2523832
Kind Code:
B2
Abstract:
There is a coordinate input apparatus in which a vibration input by a vibration pen is detected by vibration sensors attached to predetermined positions on a vibration propagating plate made of a transparent glass plate or the like and the coordinate position of the pen on the plate is detected on the basis of the vibration propagation times which are required until the vibration is detected by the sensors. Portions near edge sides out of the coordinate input area of the plate are gently largely curved, thereby preventing the generation of reflected waves from the periphery of the plate. The ratio of the effective coordinate input area to the size of the whole apparatus main body id set to a large value, so that the apparatus can be miniaturized.
Inventors:
YOSHIMURA JUICHIRO
TANIISHI SHINNOSUKE
TANIISHI SHINNOSUKE
Application Number:
JP27749088A
Publication Date:
August 14, 1996
Filing Date:
November 04, 1988
Export Citation:
Assignee:
CANON KK
International Classes:
G06K11/06; G06F3/033; G06F3/041; G06F3/043; G06F3/048; G06F3/0488; (IPC1-7): G06F3/03; G06F3/03
Attorney, Agent or Firm:
Yasunori Otsuka (1 person outside)