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Electromagnetic input device

An input device, electromagnetic technology, applied in the input/output process of data processing, electrical digital data processing, instruments, etc., can solve the problems of complex production of pressure-sensitive measuring components and low induction sensitivity, and achieve low production cost and high induction. The effect of sensitivity

Inactive Publication Date: 2014-04-09
MINGSHUO COMP (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an electromagnetic input device to improve the problems of complicated manufacture and low induction sensitivity of pressure-sensitive measurement components in the prior art

Method used

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Embodiment Construction

[0021] An electromagnetic input device according to a preferred embodiment of the present invention will be described below with reference to related drawings, wherein the same components will be described with the same reference numerals. It should be stated first that the illustrations are only examples for illustration purposes only, and the dimensions and proportions shown in the figures are not the same as those in actual applications.

[0022] Please refer to Figure 1A and Figure 1B and 1C shown, where Figure 1A It is a partial cross-sectional schematic diagram of an electromagnetic input device according to the first preferred embodiment of the present invention, Figure 1B for Figure 1A A partially enlarged schematic diagram of Figure 1C for Figure 1A A three-dimensional schematic diagram of part of the structure.

[0023] The electromagnetic input device 1 includes a protruding portion 11 , a pressure-sensitive module 12 , a conductive module 13 and a control...

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Abstract

An electromagnetic input device comprises a protruding part, a pressure-sensitive module, a conductive module, and a control unit. The pressure-sensitive module comprises a circuit board and a capacitor. One surface of the circuit board is provided with a printed carbon film resistor. The capacitor is disposed on the circuit board. The capacitor and the carob film resistor form an RC circuit which has a time constant. The conductive module is connected with the protruding part. At least part of the conductive module is used for contacting with the carbon film resistor. Resistance of the carbon film resistor changes with changes in contact area of the conductive module with the carbon film resistor, so that the time constant changes correspondingly. The control unit is electrically connected with the RC circuit and used for detecting the time constant. When bearing external force, the protruding part drives the conductive module to move, the contact area of the conductive module with the carbon film resistor changes, the time constant changes along, and the control unit controls input line width of the electromagnetic input device according to the time constant. Through the application of the electromagnetic input device, the problems that the pressure-sensitive measuring component is complex to manufacture and low in sensing sensitiveness can be improved.

Description

technical field [0001] The present invention relates to an input device, in particular to an electromagnetic input device. Background technique [0002] With the advancement of science and technology, the drawing technology of electromagnetic induction is constantly improving. Users can use the combination of electromagnetic drawing board and electromagnetic pen to obtain the experience of hand-painting with traditional paper and pen in the past. However, the user's requirements for painting quality are This makes electronic drawing not only an input of the pen tip trajectory, but also further includes subtle information such as the weight and angle of the stroke. [0003] In the prior art, the electromagnetic input device for obtaining the weight information of brush strokes is usually an electromagnetic drawing board, and the measurement of pressure sensitivity can adopt variable inductance type, variable capacitance type or pressure-sensitive component type, etc., variabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/046
Inventor 魏玲林孟志
Owner MINGSHUO COMP (SUZHOU) CO LTD
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