Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Touch system and its capacitance detection device

A detection device and capacitance technology, which is applied in the direction of measuring devices, measuring electrical variables, measuring resistance/reactance/impedance, etc., can solve the problems of power consumption and hardware cost increase

Active Publication Date: 2017-06-16
ILI TECHNOLOGY CORPORATION
View PDF11 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This necessitates the use of an operational amplifier with a wide range of linear operation 32
In addition, under the condition of fixed resolution, an analog-to-digital converter with a wide input voltage range must also be used34
Both of the above problems will lead to increased power consumption and hardware costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Touch system and its capacitance detection device
  • Touch system and its capacitance detection device
  • Touch system and its capacitance detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] According to an embodiment of the present invention, it is a capacitance detection device for matching with a capacitive touch panel, and its functional block diagram is as follows Figure 4 shown. The detection device 400 includes a voltage generator 41 , a summing module 42 , an analog-to-digital converter 43 , a multiplier 44 , multipliers 45A˜45O, integrators 46A˜46O and an estimation module 47 . The following description first takes the case of detecting fifteen capacitors under test by the detection device 400 as an example. It should be noted that the number of capacitors to be tested is not limited to fifteen, and the number of multipliers and integrators in the detection device 400 can be adjusted according to the number of capacitors to be tested, which will be described in detail later.

[0033]In this embodiment, the voltage generator 41 generates fifteen input signals V0 - V14 in total, and provides these input signals to the measured capacitors C0 - C14 r...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a touch control system and a capacitance detection device thereof. The detecting device provided by the present invention is used for detecting N capacitors in a touch panel. The detection device generates N different input signals and provides an i-th input signal among them to the i-th capacitor. The N input signals respectively correspond to a delayed sequence of a maximum length sequence or the maximum length sequence itself. The detection device sums up the N response signals generated after the N input signals are provided to the N capacitors to generate a summed signal. Subsequently, the summed signal is multiplied by the i th input signal and integrated to generate an i th integrated signal. The detecting device estimates a capacitance of each of the N capacitors according to the N integrated signals.

Description

technical field [0001] The present invention relates to touch systems, and in particular to techniques for measuring the capacitance of capacitive touch panels. Background technique [0002] With the advancement of technology, the operation interfaces of various electronic products have become more and more user-friendly in recent years. For example, through a touch screen, users can directly operate programs and input messages / texts / patterns on the screen with their fingers or a stylus, saving the trouble of using input devices such as keyboards or buttons. Actually, the touch screen is usually composed of a sensing panel and a display disposed behind the sensing panel. The electronic device can judge the meaning of the touch according to the position touched by the user on the sensing panel and the image displayed on the display at that time, and execute the corresponding operation result. [0003] Existing touch technologies are roughly classified into resistive, capaci...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/26
Inventor 苏裕哲黄家宏杨文杰童泰来
Owner ILI TECHNOLOGY CORPORATION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com