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Touch detection system

A technology of touch detection and touch, which is applied in the directions of instruments, calculations, electrical digital data processing, etc., and can solve problems such as increased production costs

Active Publication Date: 2009-12-09
TPK HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In some cases, data volume can be a prohibitive factor for product implementation and in others lead to increased production costs

Method used

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Embodiment Construction

[0050] The description will now be made with reference to the accompanying drawings, in which like reference numerals represent like components in the various views, illustrating touch detection using a wavelet algorithm comprising: a substrate, which may be any material capable of propagating sound waves; a transducer, It is used to detect the sound waves generated by the touch screen; the controller is used to implement the wavelet algorithm; and the software has the wavelet algorithm. The substrate can be composed of any material capable of transmitting sound waves. The size of the substrate is not limited to a certain size. The algorithm judges and adjusts the sensitivity of the controller according to the size of the substrate. The adaptive sensitivity control is determined by the size of the substrate. The transducer may be a piezoelectric transducer or any other type of transducer that can detect sound waves generated by touching the substrate. The resonant frequency...

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Abstract

A touch detection using wavelet algorithm for detecting touches on a surface by receiving acoustic waves generated by the touch and performing signal analysis on these acoustic waves using wavelet transformation where the storage requirement for reference signal is reduced. The inventive device includes a substrate that can be any material which is capable of propagating acoustic waves, transducers that detect the acoustic waves generated by the touch on the screen, a controller that implements the wavelet algorithm and software that incorporates wavelet algorithm. The substrate can be built from any material that is capable of propagating acoustic waves. The size of the substrate is not limited to a certain size. The sensitivity of the controller is determined and adjusted by the algorithm based on the size of the substrate. This is an adaptive sensitivity control determined by the size of the substrate.

Description

technical field [0001] This application claims the benefit of US Provisional Application No. 60 / 749,489. The present invention relates to a touch algorithm, and in particular, to a touch detection system and method for performing signal analysis on sound waves generated by touching a substrate capable of propagating sound waves using wavelet algorithms. Background technique [0002] Touch screens have been used for many years. Generally, touch screens include resistive touch screens, infrared touch screens, surface acoustic wave touch screens, pressure and capacitive touch screens. [0003] A major issue with existing resistive touch screens is durability. After a period of use, the screen may not be able to display certain locations. Resistive touchscreen products require multiple manufacturing steps including, but not limited to, sputtering or printing conductive coatings, adding linearization patterns, and adding cover sheets. Both resistive and capacitive products te...

Claims

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Application Information

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IPC IPC(8): G09G5/00
CPCG06F3/0436G06F3/043
Inventor 戈卡尔普·贝拉默戈鲁
Owner TPK HLDG