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Method, device and system for remotely accessing data

A remote access and data technology, applied in the field of data transmission, can solve problems such as increasing data costs, save time, reduce costs, and improve work efficiency

Inactive Publication Date: 2013-04-24
北京闪联云视信息技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method of realizing data access by means of a USB network card requires that the device A has a driver for the USB network card and supports the protocol stack of TCP / IP at the same time. Therefore, it is necessary to modify the device A so that its driver and protocol stack can Support for USB network cards, which increases the cost of implementing remote access to data

Method used

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  • Method, device and system for remotely accessing data
  • Method, device and system for remotely accessing data
  • Method, device and system for remotely accessing data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The embodiment of the present invention provides a device for remotely accessing data, please refer to figure 1 , figure 1 It is a structural diagram of a device for remotely accessing data disclosed in Embodiment 1 of the present invention, and the device includes a USB disk virtual unit 101 , a command conversion unit 102 and a network communication unit 103 . The internal structure and connection relationship of the device will be further introduced below in conjunction with the working principle of the device.

[0021] The USB disk virtual unit 101 is used to map the device node into a disk on the USB mass storage device side according to the Universal Serial Bus USB protocol, when receiving the data of the Universal Serial Bus USB mass storage type that is encapsulated with read and write operation commands sent by the terminal host , decapsulating the data of the USB mass storage type to obtain the read and write operation commands;

[0022] The instruction conv...

Embodiment 2

[0041] The embodiment of the present invention also provides a system for remote accessing data, please refer to image 3 , image 3 It is a structural diagram of a system for remote accessing data disclosed in Embodiment 2 of the present invention. The system includes at least one data source device 303 and a conversion device 302 connected to a terminal host 301 through a USB interface, wherein,

[0042] The terminal host 301 is configured to encapsulate the read and write operation commands into data of the USB mass storage type according to the USB mass storage standard, and send the data of the USB mass storage type to the conversion device;

[0043] The conversion device 302 is configured to map the block device in the data source device as an NDB server into a device node according to the network block device NDB protocol, and then map the device node into a USB mass storage device according to the Universal Serial Bus USB protocol The disk at the end, when receiving ...

Embodiment 3

[0059] Corresponding to the above-mentioned apparatus for remotely accessing data, an embodiment of the present invention also provides a method for remotely accessing data. see Figure 4 , which is a flowchart of a method for remotely accessing data disclosed in Embodiment 1, the method includes the following steps:

[0060] Step 401: Map the block device in the data source device serving as the NDB server into a device node in advance according to the network block device NDB protocol, and then map the device node into a disk on the USB mass storage device side according to the Universal Serial Bus USB protocol;

[0061] Step 402: When receiving the USB mass storage type data encapsulated with read and write operation commands sent by the terminal host, decapsulate the data of the USB mass storage type to obtain the read and write operation commands;

[0062] Step 403: Encapsulating the read and write operation commands into NDB data frames according to the NDB protocol, an...

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PUM

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Abstract

The invention discloses a method, a device and a system for remotely accessing data. The device comprises a universal serial bus (USB) disc virtual unit, an instruction conversion unit and a first network communication unit, wherein the USB disc virtual unit is used for mapping an equipment node into a disc at a USB mass storage equipment end, and de-encapsulating the data of USB mass storage type to acquire read-write operation commands when a receiving terminal host sends the read-write operation command encapsulated data of USB mass storage type; the instruction conversion unit is used formapping block equipment in a data source device of a non-directional beacon (NDB) server into the equipment node, encapsulating the read-write operation commands into an NDB data frame according to an NDB protocol when the read-write operation commands are received, and encapsulating the NDB data frame into a transmission control protocol / Internet protocol (TCP / IP) packet according to a TCP / IP protocol; and the first network communication unit is used for sending the TCP / IP packet to at least one data source device. The method, the device and the system realizes access of the data in a remotenetwork device based on cost reduction.

Description

technical field [0001] The invention relates to the field of data transmission, in particular to a method, device and system for remote accessing data. Background technique [0002] Among many interface types, the USB interface has been widely used due to its characteristics of fast, bidirectional, synchronous transmission, low cost, and hot-swappable. So far, the USB interface has been used on a variety of peripheral devices of the PC, including scanners, digital cameras, digital video cameras, audio systems, monitors and input devices. [0003] Various devices capable of accessing USB disks can access data in their own USB disks through the USB interface. However, when the data accessed by the device with the ability to access the USB disk is not in the USB disk, but in a remote network device, for example, when the device A with the ability to access the USB disk accesses the remote network device B, the The method used is usually: use the USB disk as an intermediate tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L29/06G06F3/06
Inventor 谢军
Owner 北京闪联云视信息技术有限公司