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Method and system for charging external universal serial bus (USB) device when universal serial bus (USB) primary device is in a standby state

A master device, USB interface technology, applied in the direction of data processing power supply, electrical digital data processing, measuring devices, etc., can solve the problems of low power, unusable USB interface, etc.

Active Publication Date: 2012-10-24
SHENZHEN TCL NEW-TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some USB host devices in the prior art, such as televisions, have very low power (about 0.3W) in the standby state, so that the USB ports of the TVs and other USB hosts are in the standby state. It cannot be used, that is, it cannot charge external USB devices (mobile phones, MP4, etc.) through its USB interface in the standby state of the TV and other USB host devices

Method used

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  • Method and system for charging external universal serial bus (USB) device when universal serial bus (USB) primary device is in a standby state
  • Method and system for charging external universal serial bus (USB) device when universal serial bus (USB) primary device is in a standby state
  • Method and system for charging external universal serial bus (USB) device when universal serial bus (USB) primary device is in a standby state

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Embodiment Construction

[0040] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0041] figure 1 It is a schematic flowchart of the first embodiment of the method for charging an external USB device when the USB host device is in standby according to the present invention.

[0042] refer to figure 1 The method for charging an external USB device when the USB master device of the present invention is on standby comprises the following steps:

[0043] S01: Detect whether the USB master device in the standby state is connected to an external USB device;

[0044] S02: If an external USB device is connected, output the charging voltage of the external USB device; go to step S03;

[0045] Specifically, if step S01 detects that the USB host device is...

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Abstract

The invention discloses a method and a system for charging an external universal serial bus (USB) device when a universal serial bus (USB) primary device is in a standby state. The method includes that step one, whether a USB primary device in a standby state is access to the external USB device or not is detected; step two, if the USB primary device in the standby state is access to the external USB device, a charging voltage of the external USB device is output to turn to step three; step three, whether the external USB device is a rechargeable device or not is detected; and step four, if the external USB device is a rechargeable device, the charging voltage of the step two can be utilized for charging the external USB device. The method and the system have the advantage that the function of charging the external USB device when the USB primary device is in the standby state is achieved.

Description

technical field [0001] The invention relates to the technical field of USB interface devices, in particular to a method and system for charging an external USB device when a USB master device is in standby. Background technique [0002] As the functions of portable power-consuming devices (such as mobile phones, MP4, etc.) that support USB interface charging become more and more powerful, their power consumption is also increasing, so that users need to supplement power for their portable power-consuming devices from time to time. However, some USB host devices in the prior art, such as televisions, have very low power (about 0.3W) in the standby state, so that the USB ports of the TVs and other USB hosts are in the standby state. It cannot be used, that is, it cannot charge external USB devices (mobile phones, MP4, etc.) through its USB interface when the USB host device such as a TV is in the standby state. Contents of the invention [0003] The main purpose of the pres...

Claims

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Application Information

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IPC IPC(8): G06F1/26G06F13/38
Inventor 胡秋生杨福军文东白宏伟杨超
Owner SHENZHEN TCL NEW-TECH CO LTD
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