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Path switching method and terminal

A channel switching, channel technology, applied in circuit devices, battery circuit devices, electric vehicles, etc.

Inactive Publication Date: 2018-09-04
QINGDAO HISENSE MOBILE COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The present invention provides a method for path switching, which is used to solve the problem in the prior art that a terminal has multiple USB ports and a USB controller, and how multiple USB ports work normally

Method used

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  • Path switching method and terminal
  • Path switching method and terminal
  • Path switching method and terminal

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Embodiment Construction

[0043] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work all belong to the protection scope of the present invention.

[0044] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] In current terminals, one USB controller can only control one USB port. This application provides a solution for one USB controller to control multiple USB ports so that multiple USB ports can work normally. Although the terminal has multiple USB ports, the There is only one USB controller, so there ...

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Abstract

The invention discloses a path switching method and a terminal, and aims to solve the problem of how to work normally for the multiple USB ports because a USB controller controls the multiple USB ports in the prior art. A selector identifies a USB port, having a voltage first, of a VBus to conduct a path between the USB port and a chip, thereby enabling the USB port to work normally; and when thevoltage of the USB port disappears, the path between the USB port and the chip is disconnected, and a path between a USB port, having a voltage first, of the VBus in other USB ports and the chip is conducted, thereby enabling another USB port to work normally. Therefore, the terminal with the one USB controller and the multiple USB ports is realized; and the multiple USB ports work normally by path switching, so that the terminal performance is improved.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a method and terminal for path switching. Background technique [0002] With the development of electronic technology, people have higher and higher requirements for the function of the USB (Universal Serial Bus, Universal Serial Bus) port on the mobile terminal, and the frequency of using the USB port is increasing. For example, the USB port can be used as a charging port. , data transfer is also possible. [0003] The BC1.2 specification briefly stipulates three different types of USB ports, the three USB port types are SDP (Standard Downstream Port, standard downstream port), DCP (Dedicated Charging Port, dedicated charging port) and CDP (Charging Downstream Port, charging downstream port). [0004] Standard Downstream Port (SDP) [0005] The data transmission lines D+ and D- of this port have 15kΩ pull-down resistors. Maximum load current is 2.5mA in ...

Claims

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Application Information

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IPC IPC(8): G06F13/40H02J7/00
CPCG06F13/4068G06F2213/0042H02J7/00
Inventor 张学杰李建田陈丽丽尹辉
Owner QINGDAO HISENSE MOBILE COMM TECH CO LTD