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

Method for eliminating non-normal contact interference in infrared touch system

An infrared touch, abnormal technology, applied in the direction of instrument, electrical digital data processing, data processing input/output process, etc., to achieve the effect of convenient application

Active Publication Date: 2012-09-12
SAMHOO SCI & TECH CO LTD
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the field of touch technology, the failure of real touch position detection caused by external interference has always been a key difficulty in real-time touch research and development.
The anti-interference methods mentioned in the above two patent documents only use two new sensing methods: force detection and capacitance detection to solve the problem of abnormal contact interference in the field of touch technology, and cannot be directly used in infrared Touch technology field

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
  • Method for eliminating non-normal contact interference in infrared touch system
  • Method for eliminating non-normal contact interference in infrared touch system
  • Method for eliminating non-normal contact interference in infrared touch system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] See figure 1 , the present invention provides a method for eliminating abnormal contact interference in an infrared touch system, comprising the following steps:

[0044] (1) Under the condition that there is no object on the display screen, turn on the power, initialize the touch screen, and establish the environmental value;

[0045] (2) After the initial completion, check whether there is any obstruction on the display screen; if so, go to step (3); if not, go to step (6);

[0046] (3), determine whether the obstruction is an abnormal contact obstruction; if so, go to step (4), if not, go to step (6);

[0047] (4) Use the entire display area of ​​the display screen to subtract the display area corresponding to the abnormal obstruction;

[0048] (5) Recalculate the remaining display area with the commonly used position coordinate detection algorithm to obtain a new display area that can function normally;

[0049] (6), enter the normal use state.

[0050] Combine ...

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

A method for eliminating non-normal contact interference in an infrared touch system comprises (1) starting up under the condition that a display screen doesn't display any objects, initializing a touch screen, and establishing an environment value; (2) detecting whether a barrier exists on the display screen; (3) judging whether the barrier is a non-normal contact barrier, executing the step (4) if yes, otherwise executing the step (6); (4) subtracting a display region corresponding to the non-normal barrier from a whole display region of the display screen; (5) recalculating the rest display region by using a common position coordinates detection algorithm to obtain a new display region capable of normally operating; and (6) entering a normal operating state. The invention can be realized only by updating software, without redesigning and updating hardware of an infrared touch frame. In addition, only partial program of firmware in a lower computer system belonging to the touch frame is updated, and an upper computer system and application software are not required to change.

Description

technical field [0001] The invention relates to a method for eliminating abnormal contact interference in an infrared touch system. Background technique [0002] The abnormal contact mentioned in the present invention refers to: under normal circumstances, in the infrared touch detection method, the user touches the screen with a finger or a dedicated stylus to realize the touch operation; the abnormal contact mentioned in the present invention Contact refers to: within the detection range of the infrared touch frame, an object that is not expected by the user to operate touches the touch screen, thereby causing interference to the user's normal operation; generally, such abnormal contact has an obvious peripheral shape that touches the screen. It is larger than the user's normal operation contact shape (such as: tea cup, palm surface, etc., the contact area is significantly larger than the area of ​​the finger or stylus that touches the screen under normal operation). [0...

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 Applications(China)
IPC IPC(8): G06F3/042G01D5/34
Inventor 杨文刘伟郭强蔡波
Owner SAMHOO SCI & TECH CO LTD
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