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

Multi-point touch control method for digital oscilloscope touch screen

A digital oscilloscope and multi-touch technology, which is applied in the direction of electrical digital data processing, data processing input/output process, instruments, etc., can solve the problem of single-point touch on an external touch screen, and achieve the effect of improving highlights and convenient operation methods

Inactive Publication Date: 2016-12-21
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the external touch screen of the existing digital oscilloscope can only be touched by a single point, the present invention provides a multi-touch method for the touch screen of the digital oscilloscope

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
  • Multi-point touch control method for digital oscilloscope touch screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention is specifically described below in conjunction with accompanying drawing:

[0019] combine figure 1 , a multi-touch method for the touch screen of a digital oscilloscope. The digital oscilloscope is externally connected with a touch screen through a USB interface. The touch screen is a capacitive touch screen. The digital oscilloscope adopts the Windows7 operating system, which can automatically identify the touch screen without driver installation. If the system cannot recognize the touch screen , you can install the driver provided by the touch screen manufacturer.

[0020] Multi-touch methods for touch screens include:

[0021] Step 1: Initialize, use the system function GetSystemMetrics(SM_DIGITIZER) to detect whether the touch screen is connected to the oscilloscope. The function GetSystemMetrics(SM_DIGITIZER) is a function that comes with the system. If the capacitive touch screen is connected to the oscilloscope, use the system function Get...

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 present invention provides a multi-point touch control method for a digital oscilloscope touch screen. A digital oscilloscope is externally connected to a touch screen by using a USB interface, wherein the touch screen is a capacitive touch screen, and the digital oscilloscope uses a Windows 7 operating system, which may automatically recognize the touch screen and is installed without a driver. If the system cannot recognize the touch screen, a drive program provided by a touch screen manufacturer may be installed. According to the present invention, a touch control point parameter is received by using a message function of Windows, and a user operation gesture is judged according to an algorithm, to implement functions of waveform horizontal zooming and sliding and vertical zooming and translation, thereby providing a user with a more friendly and convenient manner and improving product highlights.

Description

technical field [0001] The invention relates to the field of digital oscilloscopes, in particular to a multi-touch method for a touch screen of a digital oscilloscope. Background technique [0002] In digital oscilloscopes, in order to facilitate the use of users and provide a friendly operation interface, an external touch screen is often used. Touch screens mainly include two types: resistive and capacitive. Resistive touch screens work by pressure sensing. The physical position of the touch point (X, Y) in the rectangular area is converted into a voltage representing the X coordinate and Y coordinate, and the electrical signal is sent to the processor through the conversion circuit, and converted into the X and Y coordinate values ​​on the screen through calculation. The cost of resistive touch screen is relatively low. If it is designed as multi-touch, when two points are pressed at the same time, the pressure on the screen will become unbalanced, resulting in errors i...

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): G06F3/044G06F3/041
CPCG06F3/044G06F3/0416G06F2203/04104
Inventor 向前刘洪庆吴恒奎
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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