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Out-cell optical touch device and related calibrating method

一种光学触控、校正方法的技术，应用在仪器、电数字数据处理、数据处理的输入/输出过程等方向，能够解决数值偏差等问题

Active Publication Date: 2015-01-14
WISTRON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the user does not click on the preset calibration point correctly, the value converted by the traditional calibration method will still have obvious deviations

Method used

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  • Out-cell optical touch device and related calibrating method
  • Out-cell optical touch device and related calibrating method
  • Out-cell optical touch device and related calibrating method

Examples

Experimental program
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Embodiment Construction

[0044] see figure 1 and figure 2 , figure 1 is a schematic diagram of an add-on optical touch device 10 according to an embodiment of the present invention, figure 2 It is a functional block diagram of the plug-in optical touch device 10 according to the embodiment of the present invention. The plug-in optical touch device 10 is detachably hung on the display panel 12 without touch function, so that the display panel 12 can generate a touch operation function through the plug-in optical touch device 10 . The plug-in optical touch device 10 is compatible with a display panel 12 with a smaller size. Generally, the display panel 12 can be a common liquid crystal panel. Such as figure 1 and figure 2 As shown, the plug-in optical touch device 10 includes a frame 14 , a touch panel 16 , at least one signal sensor 18 , at least two position sensors 20 and a processing unit 22 . The touch panel 16 is disposed in the frame 14 to form a sensing area, and the frame 14 is detach...

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PUM

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Abstract

A calibrating method applied to an out-cell optical touch device relative to a display panel is disclosed. The calibrating method is suitable for the out-cell optical touch device that includes at least one signal sensor and at least two position sensors. The position sensors are respectively disposed on two adjacent sides of a frame of the out-cell optical touch device. The calibrating method includes acquiring a first value according to dimensions of the display panel, detecting a distance between the frame and sides of the display panel to acquire a second value, utilizing the first value and the second value to obtain an offset, and transforming touch coordinates detected by the signal sensor into screen coordinates applied for the display panel according to the offset.

Description

technical field [0001] The invention relates to an add-on optical touch device, in particular to an add-on optical touch device capable of automatic coordinate correction and a correction method thereof. Background technique [0002] Generally speaking, a display without a touch panel can only be operated by inputting control commands from peripheral devices such as a keyboard and a mouse. In order to provide touch operation functions for displays that generally do not have a touch panel, the prior art is to use an external touch device, put the external touch device on the display, and perform touch operation by the external touch device. The number of control points and the detection of moving tracks. Since the position of the plug-in touch device relative to the display is not fixed, a calibration function must be performed every time the plug-in touch device is put on the display to avoid deviation between the real touch point and the position to be controlled. In the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/0354G06F3/042
CPCG06F3/042G06F3/03547G06F3/0418
Inventor 张竣超陈裕彦
Owner WISTRON CORP
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