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

Universal serial bus (USB) connection detecting circuit system and its operation method

A universal serial bus and circuit system technology, which is applied to the redundancy of hardware for data error detection, electrical digital data processing, generation of response errors, etc., and can solve problems such as inability to connect directly

Inactive Publication Date: 2005-09-28
PROLIFIC TECH INC
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this existing connection detection circuit system is that this circuit system is designed according to the standard USB specification, that is, the devices located at both ends of the connection detection circuit system must maintain a master-slave relationship to conform to the star shape of the USB bus. Hierarchy
Therefore, under this circuit system, a USB functional device can only be connected to a USB hub device or a USB host device, but cannot be directly connected to another USB functional device

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
  • Universal serial bus (USB) connection detecting circuit system and its operation method
  • Universal serial bus (USB) connection detecting circuit system and its operation method
  • Universal serial bus (USB) connection detecting circuit system and its operation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0099] Hereinafter, several methods and their embodiments proposed by the present invention to achieve the aforementioned objectives will be described in detail.

[0100] "Manual Switch Mode"

[0101] see image 3 , the figure shows a connection detection circuit system of the first embodiment of the present invention. The connection detection circuit system 500 has a set of differential signal lines 503, 504, a set of potential resistors 508, 509, a set of grounding resistors 506, 507, a power supply system 510, and a manual switch assembly set 511. Wherein, the differential signal line 503 is used for connecting to the D+ differential signal line 403 of the USB transmission line 40 , and the differential signal line 504 is used for connecting to the D− differential signal line 404 of the USB transmission line 40 . The connection detection circuit system of this embodiment is a manual switch mode (Manual Switch Mode) circuit system.

[0102]When a USB device host (deviceho...

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

In the present invention, the universal serial bus connection detecting circuit system includes one transmission circuit and one detection circuit, and the detection circuit includes one set of differential signals wires, one set of earthed resistor assembly and one set of potential resistor, assembly, with each earthed resistor assembly and each potential resistor assembly being connected to the same differential signal wire via one switch assembly. The transmission circuit is used to receive one current relative signal from power source to the differential signal wire and each current relative signal is earthed via the earthed resistor. The detection circuit is used to detect the change in current flowing through each differential signal wire.

Description

technical field [0001] The invention relates to a circuit system and its operation method, in particular to a connection detection circuit system used in a Universal Serial Bus (USB) system and its operation method. Background technique [0002] Universal Serial Bus (USB) is a new bus interface proposed by several major computer manufacturers to solve the complex problems faced by existing computer systems and interface devices in installation and expansion. Under this system, all peripheral devices can communicate with the host computer through the same interface, that is, a USB bus. When installing this type of device, it is not necessary to shut down the host computer in advance, nor to install the driver program separately. [0003] According to the USB specification, each USB system is mainly composed of three components, namely, a USB host (Host), a USB connection line (Inter-connection) and a USB device (Device). In each USB system, there is only one USB host, and 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 Patents(China)
IPC IPC(8): G06F11/20G06F13/38
Inventor 吴文珍
Owner PROLIFIC TECH INC
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