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Method for setting general-purpose serial bus equipment as well as computer readable recording medium

A device and state technology, applied in the field of setting the state of USB devices and computer-readable recording media, can solve the problems that the CPU cannot automatically enter, the CPU power consumption cannot be reduced, and the removal is troublesome.

Active Publication Date: 2012-03-14
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for users, frequent removal / insertion of USB devices will be a troublesome thing
In addition, some USB devices transmit or receive data randomly, and users will not be able to judge when they will need to use the USB device.
Therefore, this method does not apply to all USB devices
[0007] In addition, the ACPI (Advanced Configuration Power Interface) industry standard defines 5 CPU power consumption modes and they are C0~C4 respectively. It is set in the relatively power-saving C3 mode, but due to the flaw (bug) of the Windows XP operating system, when the USB device is plugged into the notebook computer, the CPU cannot automatically enter the C3 mode, causing the CPU to lose power even when it is idle. Consumption still cannot be reduced

Method used

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  • Method for setting general-purpose serial bus equipment as well as computer readable recording medium
  • Method for setting general-purpose serial bus equipment as well as computer readable recording medium
  • Method for setting general-purpose serial bus equipment as well as computer readable recording medium

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Embodiment Construction

[0036] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of an embodiment with reference to the accompanying drawings.

[0037] refer to Figure 2-4 , the method for setting the state of the USB device in the present invention is suitable for setting a USB device 2 plugged into a computer 3 to a suspended state 93, and the computer 3 supports Execution of a USB driver stack 31 (driver stack).

[0038] The USB driver stack 31 includes a USB device driver 311 and a USB root hub driver 312 (root hubdriver) logically located under the USB device driver 311 .

[0039] The operating system includes a USB kernel stack 32 (kernel mode driver stack), and the kernel stack 32 has an I / O manager 321 (I / O manager) and a power manager 322 (powermanager). The USB device driver 311 controls the USB device 2 through the kernel stack 32 and the USB root hub driver 312 .

[0040] In the fol...

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PUM

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Abstract

The invention relates to a method for setting a USB device which comprises the following steps when the USB device is suitable for being inserted in an electronic apparatus: the electronic apparatus judges whether the USB device is free; when the USB device is free, the electronic apparatus sets the USB device to be suspension state.

Description

technical field [0001] The present invention relates to a method for setting a USB device and a computer-readable recording medium, in particular to a method for setting the state of the USB device and a computer-readable recording medium. Background technique [0002] Universal Serial Bus (Universal Serial Bus, hereinafter referred to as USB) is an interface standard between a computer interface device and a computer. When a user plugs a device that supports USB into the computer, the user does not need to execute the IRQ in the computer. Interrupt, I / O address, DMA and other related system resource setting actions can use the services provided by the USB device, which greatly improves the convenience of use. [0003] When the USB device is plugged into the notebook computer, the USB device is always in a state close to the maximum power consumption, and it uses the battery power of the notebook computer. However, the battery power of a notebook computer without an externa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/32
Inventor 杜滨陈正昌李嵩
Owner REALTEK SEMICON CORP