Touch-control system and method thereof for obtaining location of referent

A technology of touch control system and indicator, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve problems such as coordinate value errors, and achieve the effect of accurate coordinate positioning

Inactive Publication Date: 2010-06-23
PIXART IMAGING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the processing circuit 140 can only detect the coordinates of the pointer 150 from the images obtained by the image sensing devices 120 and 130, the detected coordinates tend to have large errors, resulting in such The coordinate positioning of the touch system is not very accurate

Method used

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  • Touch-control system and method thereof for obtaining location of referent
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  • Touch-control system and method thereof for obtaining location of referent

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Embodiment Construction

[0035] In order to further explain the technical means and effects adopted by the present invention to achieve the intended purpose of the invention, the following is a specific implementation of the touch control system and the method for obtaining the position of the pointer according to the present invention in conjunction with the accompanying drawings and preferred embodiments. The method, structure, method (manufacturing method, processing method), steps, features and effects thereof are as follows in detail.

[0036] see figure 2 Shown is a schematic diagram of a touch control system according to an embodiment of the present invention. In addition to the panel 210 , the touch control system 200 of the present invention also includes image sensing devices 220 , 230 , 240 and 250 , and a processing circuit 260 .

[0037] The aforementioned panel 210 has a quadrangular touch surface 212 , which is rectangular in this example.

[0038] The aforementioned image sensing de...

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Abstract

The invention relates to a touch-control system and a method thereof for obtaining the location of a referent. The touch-control system comprises a touch-control surface, at least three image sensing devices and a treatment circuit. The shape of the touch-control is a quadrangle. The image sensing devices are respectively arranged on different corners of the touch-control surface, and the sensing scopes of the image sensing devices common together cover the touch-control surface. The treatment circuit is coupled with each image sensing device, when the referent is close to the touch-control surface, and the treatment circuit senses a coordinate value of the referent from an image obtained from each group of the image sensing device in a mode that each two image sensing devices are in a group, and calculates the mean value of the coordinate values of the referent according to the sensed coordinate values after sensing at least two coordinate values. The invention can accurately position coordinates.

Description

technical field [0001] The invention relates to a technology in the field of touch control, in particular to a touch control system capable of more accurately positioning coordinates and a method for obtaining the position of an indicator. Background technique [0002] see figure 1 Shown is a schematic diagram of a known touch system (touch system). The conventional touch control system 100 includes image sensing devices 120 and 130 and a processing circuit 140 in addition to a panel 110 . The panel 110 has a touch surface 112 whose shape is a rectangle. The image sensing devices 120 and 130 are both located on the same boundary of the touch surface 112, and are respectively arranged at different corners of the touch surface 112, so that the sensing range of the two image sensing devices together covers the touch surface. 112. In addition, the image sensing devices 120 and 130 are both coupled to the processing circuit 140 . [0003] When a pointer 150 touches (or appro...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06F3/041G06F3/042
Inventor林卓毅
OwnerPIXART IMAGING INC