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Capacitive input device and multi-touch tracking method thereof

An input device and multi-touch technology, applied in the input/output process of data processing, electrical digital data processing, instruments, etc., to improve recognition efficiency and accuracy, reduce hardware cost and energy consumption, and improve input experience.

Active Publication Date: 2015-12-09
HANVON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the touch input of the existing capacitive screen in this situation, the track broken line will be displayed on the screen of the capacitive screen

Method used

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  • Capacitive input device and multi-touch tracking method thereof
  • Capacitive input device and multi-touch tracking method thereof
  • Capacitive input device and multi-touch tracking method thereof

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Embodiment Construction

[0058] The features, advantages and beneficial effects of the present invention will be described in detail below with reference to the accompanying drawings and in combination with preferred embodiments of the present invention.

[0059] Before describing the process of the present invention in detail, it should be noted that the contact tracking process of the present invention after each touch input detection step is essentially a three-stage process, wherein in the first stage, the first preset threshold For the first pairing of the previous contact with the current contact, the purpose is to perform pairing between the contacts obtained by two adjacent polls; if the pairing result is that both the current contact has not been paired and the previous contact If the contact is not paired, then in the second stage, according to the threshold value related to the unpaired times of the unpaired previous contact, the unpaired current contact and the unpaired previous contact are...

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Abstract

The invention provides a capacitive input device and a multi-touch tracking method thereof. The device includes a capacitive screen, a calculation unit for calculating position relation between each preceding contact point and each current contact point according to current contact point coordinates from the capacitive screen and current contact point coordinates from a memory unit, a first matching unit and a second matching unit both used for performing primary and secondary matching between the current contact points and the preceding contact points respectively, as well as a counter for counting the unmatched number of each unmatched current contact point and the memory unit for storing the current contact points from the capacitive screen, the preceding contact points and the unmatched number as a preceding contact point data set. The input device provided by the invention can efficiently avoid disconnection of a track in continuous input process.

Description

technical field [0001] The present invention relates to capacitive input devices. More specifically, the present invention relates to a capacitive input device with a multi-touch tracking function and a multi-touch tracking method. Background technique [0002] The existing capacitive input device is used as a human-computer interaction device. The capacitive screen used is generally made of a transparent conductive ITO (indium tin oxide) film in glass or other transparent materials to form a conductive film with a criss-cross structure. When there is a conductor such as a finger touch, the touch position of the conductor on the capacitive screen is detected through the change of the electric field formed by the conductive film to realize the human-computer interaction function. [0003] In some applications, by programming the input device, it is possible to recognize the user's gestures during input, such as weight, thickness, priority, etc., and use the input device, for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
Inventor 郑洋
Owner HANVON CORP