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Coordinate normalizing method of electromagnetic induction device and electromagnetic induction device

A technology of electromagnetic induction and coordinate correction, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve problems such as inconsistent motion trajectories, and achieve the effect of improving experience

Active Publication Date: 2012-04-18
BEIJING HANWANG PENGTAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses the measured coordinate values ​​and time coefficients of different contact points of the electromagnetic pen on the electromagnetic board to obtain the actual coordinates of the electromagnetic pen when it moves on the electromagnetic board, so as to solve the problem that the coordinate values ​​actually measured by the electromagnetic board are inconsistent with the motion trajectory of the electromagnetic pen. question

Method used

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  • Coordinate normalizing method of electromagnetic induction device and electromagnetic induction device
  • Coordinate normalizing method of electromagnetic induction device and electromagnetic induction device
  • Coordinate normalizing method of electromagnetic induction device and electromagnetic induction device

Examples

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Embodiment 1

[0049] Take the X-axis coordinate first and then the Y-axis coordinate when the electromagnetic pen moves on the electromagnetic board as an example to illustrate the coordinate correction method.

[0050] Figure 4 It is a schematic diagram of the movement track of the electromagnetic pen. Point C in the figure is a contact point when the electromagnetic pen moves on the electromagnetic board, and its coordinates are (x1, y1). After the electromagnetic board measures and corrects the coordinates of point C, the controller in the electromagnetic board processes data and sends the coordinates (x1, y1) to the host. This period of time is recorded as t1. After time t1, the electromagnetic pen moves to point D At this time, the electromagnetic board control circuit is set to measure the X-axis coordinate of point D first, and the X-axis coordinate value is recorded as x2. Then the controller in the electromagnetic board needs to process the X-axis measurement data. The time for proce...

Embodiment 2

[0054] In the following, the coordinate correction method of the present invention will be described by taking the Y-axis coordinate first and then the X-axis coordinate when the electromagnetic pen moves on the electromagnetic plate as an example.

[0055] Figure 5 It is a schematic diagram of the movement track of the electromagnetic pen. In the figure, point C1 is a contact point when the electromagnetic pen moves on the electromagnetic board, and its coordinates are (x1, y1). After the electromagnetic board measures and corrects the coordinates of point C1, the controller in the electromagnetic board performs data processing and sends coordinates (x1, y1) to the host. This period of time is recorded as t1. After time t1, the electromagnetic pen moves to point D1 At this time, the electromagnetic board control circuit is set to measure the Y-axis coordinate of point D1 first, and the Y-axis coordinate value is recorded as y2. Then the controller in the electromagnetic boa...

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Abstract

The invention relates to a coordinate normalizing method of an electromagnetic induction device and an electromagnetic induction device, wherein the method comprises the following steps: determining the coordinate of a first contact point (contacted by an electromagnetic pen) on an electromagnetic board; when the electromagnetic pen, after a first time t1, moves from the first contact point to a second contact point on the electromagnetic board, determining a first coordinate value of the second contact point; when the electromagnetic pen, after a second time t2, moves from the second contact point to a third contact point on the electromagnetic board, determining a second coordinate value of the third contact point; and according to the coordinate value of the first contact point, the first coordinate value of the second contact point and the second coordinate value of the third contact point as well as the first time t1 and the second time t2, obtaining the actual coordinate value of a second coordinate of the second contact point. By using the coordinate normalizing method disclosed by the invention, the problem that the actual motion trail of the electromagnetic pen is not coincident with a measured coordinate can be solved, so that a coordinate value measured by the electromagnetic board is extremely close to the actual motion coordinate value of the electromagnetic pen.

Description

[0001] Technical field [0002] The invention relates to the coordinate detection of an electromagnetic induction device, in particular to an electromagnetic induction device and a coordinate correction method of the device. Background technique [0003] With the continuous development of information technology, electromagnetic induction devices have been applied in many fields. The electromagnetic induction device is an input device just like the keyboard, mouse and handwriting board. The electromagnetic induction device consists of an electromagnetic board and an electromagnetic pen, and is mainly used in computer painting, so that the creator can find the feeling of real painting when creating. The current electromagnetic induction device usually transmits data such as the track coordinates of the electromagnetic pen on the electromagnetic plate, the pressure and the inclination angle of the electromagnetic pen to the computer, so as to realize the purpose of handwriting input...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/046G06F3/033G06F3/0354
Inventor 王红岗伍松林
Owner BEIJING HANWANG PENGTAI TECH CO LTD
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