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

Method and device for judging USB equipment connection and USB system

A technology for device connection and disconnection, applied in the USB system to determine the connection of USB devices, and can solve problems such as disconnection and misjudgment

Active Publication Date: 2018-01-30
ACTIONS ZHUHAI TECH CO
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in fact, the judgment is made by using the single-ended signal amplitude received by the master device, and the problem of disconnection misjudgment often occurs

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 and device for judging USB equipment connection and USB system
  • Method and device for judging USB equipment connection and USB system
  • Method and device for judging USB equipment connection and USB system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0031] For example, see figure 1 It is a schematic diagram of a possible implementation environment of the embodiment of the present invention. Such as figure 1 As shown, in this implementation environment, it may include: a USB host device 110 , a USB slave device 120 , and a cable (cable) 130 for connecting the USB host device 110 and the USB slave device 120 . Wherein, the pins of the interface between the USB host device 110 and the USB slave device 120 include: VBUS (USB voltage, 5V), DP (D+) (differential signal positive pole), GND (ground wire), and so on.

[0032] figure 2 It is a flowchart of a method for judging the connection of a USB device acco...

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 discloses a method and a device for judging USB equipment connection and a USB system. The method comprises the steps that under a single-ended signal transmission mode, a single-ended signal amplitude difference between USB master equipment and USB slave equipment is calculated; and in the process of judging whether the USB slave equipment is disconnected, the single-ended signal amplitude difference is utilized to eliminate a judgment error, and therefore the purpose of avoiding disconnection misjudgment is achieved.

Description

technical field [0001] The present invention relates to the field of communication equipment, in particular to a method, device and USB system for judging the connection of USB equipment. Background technique [0002] USB is the abbreviation of Universal Serial Bus (Universal Serial Bus). The USB interface of the USB host device and the USB slave device can be connected through a cable. For example, the mobile phone can be powered by the USB bus, and the USB interface of the mobile phone can be connected to the USB interface of the computer through a cable. The computer is the USB master device, and the mobile phone is the USB slave device. [0003] According to the specifications of USB2.0 and USB3.0, the controller of the high-speed serial USB master device will judge whether the USB slave device is disconnected according to the single-ended signal amplitude received by the master device. However, in practice, the judgment is made by using the amplitude of the single-end...

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
IPC IPC(8): G06F13/40
Inventor 余静
Owner ACTIONS ZHUHAI TECH CO
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