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USB device identification method and system

A technology of equipment identification and identification method, which is applied in the field of security authentication, can solve the problems of limited PID resources and waste of PID resources, and achieve the effect of solving the waste of PID resources, saving resources and equipment costs

Inactive Publication Date: 2016-06-08
WATCHDATA SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this distinction is that the VID assigned by the USB organization to each manufacturer is fixed and cannot be changed, and the PID resources are very limited. A new PID is used to distinguish, which is a great waste of PID resources

Method used

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] figure 1 A flow chart of a method for identifying a USB device in a specific embodiment of the present invention is shown, and the method mainly includes the following two steps:

[0037] Step S100: Determine the device identification information of the USB device and store it in the USB device;

[0038] In this embodiment, after the USB device is connected to the PC through the USB interface, in order to realize the identification of the USB device, it is first necessary to determine the device identification information of the USB device before the USB device leaves the factory, and store the device identification information in the USB in the device.

[0039] Wherein, the device identification information refers to information used to identify the type of the USB device. The device identification information is generally ...

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Abstract

The invention discloses a USB device identification method and system and belongs to the field of safety certificate. The method comprises the following steps of determining USB device identification information, storing the device identification information to a USB device, acquiring USB device identification information after a PC is detected to be connected with the USB device, and determining a type of the USB device according to the device identification information. The device identification information indicates information of identifying the USB device type. By the use of the method and system, the USB device can be identified by a PC through device identification information; and a problem of PID resource waste due to device identification by product identification codes PID can be solved, so resource use and device cost can be reduced.

Description

technical field [0001] The invention relates to the field of security authentication, in particular to an identification method and system for a USB device. Background technique [0002] According to the USB specification, all USB devices have a vendor ID (VID) and a product identification code (PID). The host (PC or other terminal equipment) distinguishes different devices through different VIDs and PIDs. It is two bytes long, the VID of each supplier is unique, and the PID is determined by the supplier. [0003] In the prior art, the identification process of the PC to the USB device is generally: when the USB device is inserted into the PC through the USB interface, the PC will enumerate the USB device, and the specific enumeration steps are: [0004] Get the device descriptor of the USB device; [0005] Obtain the configuration descriptor of the USB device; [0006] Get the string descriptor of the USB device; [0007] Among them, the PID-VID code of the device is in...

Claims

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Application Information

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IPC IPC(8): G06F13/10
Inventor 孟翔
Owner WATCHDATA SYST
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