Multi-point touch identifying method and touch device for mutual capacitance type touch equipment

A touch device, multi-touch technology, applied in electrical digital data processing, input/output process of data processing, instruments, etc. Not easy to misjudgment, good experience, high accuracy

Active Publication Date: 2012-09-19
FOCALTECH SYST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a multi-touch identification method for a mutual capacitive touch device, which aims to solve the technical problems of low accuracy identification, easy misjudgment, and poor continuous touch experience in the prior art

Method used

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  • Multi-point touch identifying method and touch device for mutual capacitance type touch equipment
  • Multi-point touch identifying method and touch device for mutual capacitance type touch equipment
  • Multi-point touch identifying method and touch device for mutual capacitance type touch equipment

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Embodiment Construction

[0049] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0050] Figure 4 The flow of the multi-touch identification method for a capacitive touch device provided by an embodiment of the present invention is shown, and the details are as follows:

[0051] In step S101 , capture all touch points exceeding a preset tactile threshold according to changes in sensing signals at positions corresponding to the touch action.

[0052] In step S102, use multiple merging rules preset at the time of design to analyze the touch points corresponding to the captured touch actions to obtain the merging relationship between the touch points, and perform these merging re...

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Abstract

The invention is applied to the field of electric digital data processing and provides a multi-point touch identifying method for mutual capacitance type touch equipment. The method comprises the following steps of: (A), catching contacts of touch action corresponding positions; (B), respectively analyzing contact combination relations of the touch action corresponding positions according to a plurality of combination rules, comparing with historical information and selecting a contact combination rule of a touch action corresponding position that a contact combination relation of the touch action corresponding position meets the historical information; (C), combining contacts of the touch action corresponding positions by using the contact combination rule of the touch action corresponding position, which meets the historical information; and (D), obtaining new contacts according to the combination and calculating a coordinate position of the touch action corresponding position. By technical characteristics that each contact combination relation is analyzed and compared with the historical information according to a plurality of combination rules so as to select the combination rule meeting the historical information and the contacts are combined, the identifying method has high identification accuracy without error.

Description

technical field [0001] The invention belongs to the field of electric digital data processing, and in particular relates to a multi-touch identification method and a touch device of a capacitive touch device. Background technique [0002] When an ordinary finger touches a capacitive screen, the change in the electric field of the surface capacitance triggers a corresponding sensing signal, resulting in the recognition of the intensity and position of the touch. figure 1 ), the peak value of the signal exceeding the preset tactile threshold is considered as the center position of the current touch, that is, the touch point, and the coordinate position of the touch is calculated according to the touch point, which is the current center of gravity algorithm popular in capacitive screen driver software. With a poor ground, the touch signal becomes less than ideal (refer to figure 2 ), a touch with a larger area (such as a thumb touch) tends to have two or more touch points, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 王李冬子张文磊
Owner FOCALTECH SYST LTD
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