Input pen with function of electromagnetic induction

Abstract

The invention relates to an input pen with a function of electromagnetic induction, which comprises a pen point, a movable ferromagnetic material, a fixed ferromagnetic material, an elastic material, a shell substance and a shell, wherein one end of the movable ferromagnetic material is adjacent to the pen point; the elastic material is arranged between the movable ferromagnetic material and the fixed ferromagnetic material; the shell is fixed with the lamella object; the lamella object coats the elastic material, a part of the movable ferromagnetic material and a part of the fixed ferromagnetic material; and a coil coats the lamella object and is connected with an oscillating circuit through a lead.

Description

technical field [0001] The invention relates to a handwriting input device, in particular to an electromagnetic induction input pen used in the handwriting input device. Background technique [0002] The input methods of handwriting input devices such as digital board (Tablet), digitizer (Digitizer), electronic whiteboard (White board) etc. include electromagnetic induction type or thin film resistance, etc., and the electromagnetic induction type is mainly used with a dedicated input pen. [0003] U.S. Patent No. US5,565,632, named "Pressure sensitive stylus pen", the inventor Ogawa disclosed some input pen structures of the prior art, figure 1 Example of one of them. see figure 1 Shown is a structural schematic diagram of an electromagnetic induction input pen in the prior art. The input pen 10 includes a shell 12 , a ferrite core 16 , a core 14 , a spring 22 , and a magnetic body 18 fixed on one end of the core 14 . The surface of the ferromagnetic material 16 is wou...

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to overcome the defects of the existing electromagnetic induction input pen, and provide an electromagnetic induction input pen with a new structure. The technical problem to be solved is to improve the conventional input pen with large size and accurate sensing. The problem of poor accuracy and insufficient reliability is very suitable for practical

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