USB (universal serial bus) equipment power supply processing method, equipment and system

A technology of a universal serial bus and a processing method, applied in the field of communication, can solve the problems of complex operation, inability to run the CPU system, and cumbersomeness.

Inactive Publication Date: 2013-12-25
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the startup program is generally stored in the Nor flash space. If the Nor flash space information fails, the entire CPU system of the large embedded device cannot run, resulting in the failure of the large embedded device to be powered on normally. Instructions (Backward Defection Identification, referred to as BDI) or hardware burning to update the boot program in the Nor flash space
[0004] However, BDI or hardware burning generally requires hardware-related personnel to operate, which is relatively complicated for software developers, and BDI or hardware burning operations at the user site are more complicated and cumbersome

Method used

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  • USB (universal serial bus) equipment power supply processing method, equipment and system
  • USB (universal serial bus) equipment power supply processing method, equipment and system
  • USB (universal serial bus) equipment power supply processing method, equipment and system

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Embodiment Construction

[0019] figure 1 A flowchart of an embodiment of the method for processing power supply of a USB device provided by the present invention, such as figure 1 As shown, the method for processing power supply of a USB device in this embodiment may include:

[0020] S101. If it is detected that the first USB device is not normally powered on, send a power supply request message to the second USB device through the USB interface of the first USB device, and the second USB device is a device connected to the USB interface through the USB bus, so that The second USB device supplies power to the storage unit connected to the USB interface through the USB interface.

[0021] The execution body of the USB device power supply processing method in this embodiment may be a USB device power supply processing device, and the USB device power supply processing device may be implemented in the form of hardware or software, which is not included in this embodiment. Do limit.

[0022] Specifica...

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PUM

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Abstract

The invention provides a USB (universal serial bus) equipment power supply processing method, equipment and a system. The method includes that if first USB equipment is detected not to be powered on normally, power supply request information is sent to second USB equipment through a USB interface of the first USB equipment, and the second USB equipment is equipment connected with the USB interface through a USB so as to supply power to a storage unit connected with the USB interface, through the USB interface; a correct initiator received through the USB interface is written in the storage unit. Through the technical scheme, read-write operation can be performed on the storage unit of the first USB equipment without running a CPU (central processing unit) of the first USB equipment, and further a cumbersome process that initiators in a Nor flash space are updated by BDI (backward defection identification) or hardware burning in the prior art is avoided.

Description

technical field [0001] The present invention relates to communication technology, in particular to a universal serial bus device power supply processing method, device and system. Background technique [0002] In the prior art, a Universal Serial Bus (Universal Serial Bus, USB for short) USB OTG (On-The-Go) technology has also been introduced into some embedded devices. For large embedded devices (such as switches or routers) as USB peripherals, since large embedded devices require a relatively large amount of current to operate, the operation of large embedded devices is generally powered by a power supply. It can include a large embedded device with its own power supply or an external power supply connected to a large embedded device. The USB device connected to the USB interface of the large embedded device through the USB bus operates the large embedded device through the CPU system of the large embedded device. Nor flash and Nand flash space for embedded devices. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
Inventor 林双凤
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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