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Control method and device for peripheral equipment

A technology for external devices and control methods, applied in data processing power supplies, instruments, electrical digital data processing, etc., can solve the problems of high power consumption and waste of power consumption, and achieve the effect of saving power consumption and waste.

Inactive Publication Date: 2009-06-10
VIMICRO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the above method must restore the PC to a normal working state to drive an external USB device, the PC must consume a large amount of power consumption compared to the standby state
In practical applications, users often only need to use external USB devices without using a PC. At this time, the PC and its internal components that are working normally cause unnecessary waste of power consumption.

Method used

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  • Control method and device for peripheral equipment
  • Control method and device for peripheral equipment
  • Control method and device for peripheral equipment

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Embodiment Construction

[0036] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with specific embodiments.

[0037] refer to figure 1 , shows a method for controlling an external device of the present invention, the crystal oscillator clock of the external device is turned off and is in a standby state, and the method may specifically include the following steps:

[0038] Step 101, the external device responds to the interruption, receives a control signal, and recovers the crystal oscillator clock signal of the external device;

[0039] Step 102, the external device executes interrupt processing.

[0040] The interrupt mentioned here refers to the external event that needs to be executed by the external device. When the external event occurs, the external device "jumps out" from the standby state to process the interrupt event. After the interrupt processing is com...

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Abstract

The invention provides a method and a device for controlling external equipment. A crystal oscillator clock of the external equipment is closed and is in the standby state, and the method comprises the following steps: the external equipment responds to an interruption to receive a control signal, and the crystal oscillator clock signal of the external equipment is restored; and the external equipment executes the interrupt processing. The invention, by directly inputting the control signal to the external equipment in the standby state to restore the crystal oscillator clock signal of the external equipment, and without needing to restore the normal working state of the main frame connected with the external equipment to drive the external equipment, realizes the operation of the external equipment in the standby state of the main frame, and saves power consumption due to restoration the main frame to work in the normal mode.

Description

technical field [0001] The invention relates to the field of chip control, in particular to a control method and device for external equipment. Background technique [0002] At present, in order to prolong the service life and save energy, most electronic devices are equipped with a standby mode, that is, when the device is not working temporarily, it is set to a sleep state to realize standby. For example: if an external USB (Universal Serial Bus, Universal Serial Bus) device plugged into a PC (Personal Computer, personal computer) remains idle for 3ms on the USB bus, the USB device enters a standby state; One situation is that when the PC is in standby, the external USB device plugged into the PC also enters the standby state. [0003] In standby mode, the crystal clock of the USB device is turned off. Due to the shutdown of the crystal oscillator clock, the corresponding external USB device cannot perform any work. At this time, if the external USB device needs to work...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/32G06F13/10
Inventor 吴大畏张倩
Owner VIMICRO CORP
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