USB (universal serial bus) device redirecting method facing virtual machines

A virtual machine and redirection technology, applied in software simulation/interpretation/simulation, electrical components, program control devices, etc., can solve problems such as inability to access devices, lack of USB redirection support, etc., to achieve the effect of solving limitations

Active Publication Date: 2012-07-11
中标易云信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. When you access the USB device from the client menu and use the device in the desktop, you will not be able to access the device on the local computer (only 1 access at the same time);
[0005] 2. If you access the desktop from the browser portal, you can only use this function on the Windows client, and you need to have installed the component with optional USB redirection on the local Windows system in advance;
[0006] 3. To use a USB printer on the desktop, the user must install the required print driver on the desktop
[0007] And VMware's free virtual machine still lacks support for USB redirection

Method used

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  • USB (universal serial bus) device redirecting method facing virtual machines
  • USB (universal serial bus) device redirecting method facing virtual machines
  • USB (universal serial bus) device redirecting method facing virtual machines

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Embodiment Construction

[0029] In order to make the features and advantages of the present invention more clearly understood, below in conjunction with accompanying drawing, describe in detail as follows: figure 1 As shown, the architecture of the present invention is described, and the virtual machine on the physical host B is accessed through the remote desktop protocol on the physical host A. At this time, the virtual machine on the physical host B needs to access the USB device on the physical host C (the physical host C The USB device and the USB redirection protocol on the computer can also be located on the physical host A), and the specific execution steps in this embodiment are:

[0030] 1) Use the emulator QEMU with the USB redirection function to create a virtual machine, and the physical machine A accesses the virtual machine on the physical machine B through the remote desktop protocol;

[0031] 2) Use the USB device redirection protocol on the physical machine C to realize the communica...

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Abstract

A USB (universal serial bus) device redirecting method facing virtual machines includes the steps: (1) utilizing a simulator QEMU which is on a remote physical machine B and added with a USB device redirecting system to create one virtual machine, and enabling a local physical machine A to access to the virtual machine by means of a remote desktop protocol; (2) utilizing a physical machine C of a USB device to realize communication between the USB device and the virtual machine on the remote physical machine B by the aid of a USB redirecting protocol; and (3) utilizing the remote physical machine B to redirect the USB device on the physical machine C into one designated virtual machine on the remote physical machine B through a command line interface of the simulator QEMU, so that the local physical machine A can utilize the USB device in a remote desktop. The method is applicable to all the virtual machines created by the simulator QEMU added with the USB device redirecting system, and the USB devices are redirected by the aid of the USB redirecting protocol.

Description

technical field [0001] The invention relates to a method for a virtual machine created by emulator QEMU to access a USB device on a local or remote physical machine, especially a method for specifying a USB device on a physical machine through a transmission control protocol socket (TCP Socket) and a USB redirection protocol. Method for redirecting USB devices to specified virtual machines. Background technique [0002] Virtualization (Virtualization) technology first appeared in the IBM mainframe system in the 1960s. With the widespread deployment of multi-core systems, clusters, grids, and even cloud computing in recent years, the advantages of virtualization technology in commercial applications have become increasingly evident, not only reducing IT costs, but also enhancing system security and reliability. The concept of virtualization It has also gradually penetrated into people's daily work and life. However, there are many problems in the process of using virtualiza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/455H04L29/08H04L29/12
Inventor 兰雨晴刘铭宋潇豫张永军夏颖
Owner 中标易云信息技术有限公司
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