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Coil array of electro-magnetic induction white board and design method of coil array of electro-magnetic induction white board

A coil array and electromagnetic induction technology, which is applied in computing, electrical digital data processing, input/output process of data processing, etc., can solve problems such as the need to improve the accuracy of touch control, and achieve the goal of avoiding random misoperation and improving accuracy Effect

Active Publication Date: 2014-10-08
HITEVISION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the touch point of the electromagnetic pen is actually within the three coils numbered (1, 2, 3) on the X-axis, but the position recognized by the control unit is in the three coils numbered (1, 2, 4). Within the coil, touch accuracy still needs to be improved

Method used

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  • Coil array of electro-magnetic induction white board and design method of coil array of electro-magnetic induction white board
  • Coil array of electro-magnetic induction white board and design method of coil array of electro-magnetic induction white board
  • Coil array of electro-magnetic induction white board and design method of coil array of electro-magnetic induction white board

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0030] The coil array of the electromagnetic induction whiteboard of the present invention includes a plurality of coils wound by wires. In order to reduce the number of lead wires, any wire is used to wind multiple coils. Of course, only one coil can be wound by the same wire. All the coils are arranged in the same direction. These coils are respectively arranged along the first and second directions. Usually, the first direction is selected as the positive or negative direction of the X-axis of the Cartesian coordinate system, and the second direction is selected as the positive or negative direction of the Y-axis of the Cartesian coordinate system. The coils arranged along the first and second directions are criss-crossed to form a grid structure, and each grid forms an induction unit. The size of the induction unit depends on the spacing b...

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Abstract

The invention belongs to the field of electro-magnetic induction white boards, discloses a coil array of an electro-magnetic induction white board. The coil array comprises a plurality of coils formed by wires in a coiled mode, the coils are arranged in the first direction and the second direction respectively, the number of the coils formed by any wire in the coiled mode is larger than or equal to one, the width of any coil in the arrangement direction of the coil is three line distances, the line number combination of any three adjacent coils in the same arrangement direction is unique, and only two sets of line number combinations formed by any three coils in any four adjacent coils in the same arrangement direction exist in the direction. By means of the coil array, the line number combinations, possibly causing misoperation, in the coil array are removed, random misoperation is avoided, and the touch accuracy is improved.

Description

technical field [0001] The invention relates to the field of electromagnetic induction whiteboards, in particular to a coil array of an electromagnetic induction whiteboard and a design method thereof. Background technique [0002] Electromagnetic induction whiteboard is a device that uses the principle of electromagnetic induction to realize human-computer interaction. It generally includes main equipment such as a display screen, a coil array, a control unit, and an electromagnetic pen. The coil array is installed on the inner side of the display screen and connected to the control unit. When the electromagnetic pen touches the display screen, the coil senses the electromagnetic waves emitted by the electromagnetic pen to generate an induced electromotive force. By monitoring the potential level or current of each coil in the coil array, the control unit can accurately locate the touch point of the electromagnetic pen. [0003] The traditional coil array is composed of mul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/046
Inventor 杨长亮
Owner HITEVISION CO LTD
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