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Device and method for USB (universal serial bus) charging

A technology of a charging device and a charging method, applied in the direction of data processing power supply, etc., can solve problems such as power loss, inability to effectively manage power supply configuration, etc., and achieve the effect of reducing power consumption

Inactive Publication Date: 2013-03-06
ACER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] These computer host devices or laptop USB ports that can charge external USB devices will continuously supply power and output large currents continuously, because the computer host devices will continue to supply power regardless of the external USB device connected to the USB interface. , thus dissipating a considerable amount of unnecessary power and effectively managing the power configuration

Method used

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  • Device and method for USB (universal serial bus) charging
  • Device and method for USB (universal serial bus) charging

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Embodiment Construction

[0018] The following descriptions are the completed embodiments of the present invention. Its description is used to illustrate the basic concept of the present invention and does not have a limiting meaning. The scope of the invention is best defined in the appended claims.

[0019] figure 1 It is a structural block diagram of the USB charging device 100 according to an embodiment of the present invention. The USB charging device 100 according to an embodiment of the present invention includes a USB interface 110 , a detection unit 120 , a charging control unit 130 , and a power supply unit 140 . The detection unit 120 is coupled to the USB interface 110 to detect whether the external USB device 150 is connected to the USB interface 110 . The charging control unit 130 has a memory unit 132, and the memory unit 132 is used to store external USB device types (for example, audio (audio), communication (communication), display (display), manual interface (human interface), sto...

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Abstract

Disclosed are a device and a method for USB (universal serial bus) charging. The device comprises a USB interface, a detecting unit, a charging control unit and a power supply unit. The detecting unit is used for detecting whether an external USB device provided with class information is coupled to the USB interface or not, when the detecting unit detects that the external USB device is coupled to the USB interface, the detecting unit transmits a detecting signal. When the charging control unit is in a standby mode, the charging control unit can be switched into an operating mode according to the detecting signal so as to read the class information of the external USB device, and whether to output a chargeable signal or not is determined according to the class information. The power supply unit supplies power to the external USB device according to the chargeable signal.

Description

technical field [0001] The present invention mainly relates to a universal serial bus USB charging device and method, in particular to a USB charging device and method capable of charging in a power-off or sleep state. Background technique [0002] As universal serial bus (Universal Serial Bus or USB, hereinafter referred to as USB) devices become more and more popular, the charging of USB devices becomes more and more important. Currently, many computer host devices or notebook computers have the function of USB charging. In addition to charging the connected external USB device when the computer host device or notebook computer is turned on, when these computer systems are turned off or in the standby state, some settings can also be used to continuously charge the external USB device. . [0003] These computer host devices or laptop USB ports that can charge external USB devices will continuously supply power and output large currents continuously, because the computer h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/32
Inventor 林哲纬
Owner ACER INC