Check patentability & draft patents in minutes with Patsnap Eureka AI!

Circuit module and method for touch detection

A circuit module and touch technology, applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc., can solve the problems of complex circuit, high system power consumption, background noise sensitivity, etc., and achieve simple circuit structure, The effect of noise reduction

Active Publication Date: 2013-02-06
SUZHOU PIXCIR MICROELECTRONICS
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if this method is used, the power consumption of the system will inevitably be high, and the circuit will be complicated
There are other sequential scans of the sensing line capacitance to obtain the value of each scan line for processing, but this method is still sensitive to background noise, and the value is prone to drift

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
  • Circuit module and method for touch detection
  • Circuit module and method for touch detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0011] see figure 1 As shown, the capacitive touch detection system of the present invention includes a plurality of sensing lines arranged in two directions and a detection processing system. The two directions refer to the horizontal direction, which is the X direction, and the vertical direction, which is the Y direction; the detection and processing system includes an analog switch and a comparator. Wherein, the analog switch is selectively closed through programming, so it is also called a programmable analog switch. The induction lines X1, X2...Xn and Y1, Y2...Yn in the two directions are all connected to the comparator after passing through the respective programmable analog switches, and each induction line is relatively ground itself Inductive capacitances are also generated individually.

[0012] At a certain moment, first select two induct...

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 circuit module for touch detection, comprising a plurality of sensing wires arranged in two directions, two groups of sensing wires in one direction are all connected to one sensing wire in the other direction, and one end of the sensing wire in the other direction is connected with an input end of a comparator. According to the circuit module and method for touch detection, not only is the circuit structure simple, but also whether a plurality of touch objects are touched can be accurately judged in a formed sensing value matrix by utilizing the method.

Description

technical field [0001] The invention relates to the field of touch detection, in particular to a touch detection method of a capacitive touch panel and a circuit module thereof. Background technique [0002] Today, touch panels have been widely integrated in various electronic products as input devices. Users only need to slide or touch objects (such as hands and stylus) on the panel to make the cursor move or move relative to the touch panel. Absolute movement can complete various inputs including text writing, scrolling windows and virtual buttons. Among them, the capacitive touch panel is a kind of touch panel that can move a finger on a smooth panel to control the movement of the cursor. When the finger touches the panel, the first sensing direction and the second sensing direction of the touched position The magnitude of the sensing energy in the direction will change. By detecting the magnitude of the sensing energy, it can be judged whether the object touches the cap...

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): G06F3/044
Inventor 翟先旭
Owner SUZHOU PIXCIR MICROELECTRONICS
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com