Method and system for setting charging current in USB data transmission of mobile terminal

A charging current and mobile terminal technology, which is applied in the field of mobile terminal charging applications, can solve problems such as data transmission failure and voltage instability, and achieve stable transmission and avoid data transmission failure.

Active Publication Date: 2014-11-26
威海区域创新中心有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a charging current setting method and system for mobile terminal USB

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  • Method and system for setting charging current in USB data transmission of mobile terminal
  • Method and system for setting charging current in USB data transmission of mobile terminal
  • Method and system for setting charging current in USB data transmission of mobile terminal

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Embodiment Construction

[0029] The present invention provides a charging current setting method and system during USB data transmission of a mobile terminal. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] like figure 1 Shown is a specific implementation of the charging current setting method during USB data transmission of a mobile terminal, wherein the method includes the following steps:

[0031] S100. The mobile terminal uses the USB interface to turn on the charging current, and acquires the number of changes in the voltage difference between the D+ and D- pins of the USB interface within a predetermined period of time.

[0032] Further, the steps of acquiring the number of changes in the voltage difference between...

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Abstract

The invention discloses a method and system for setting the charging current in USB data transmission of a mobile terminal. The method includes the following steps that first, the mobile terminal is connected with the charging current through a USB interface, and the number of changes of difference between the voltage of a D+ pin and the voltage of a D- pin of the USB interface in a preset period of time is acquired; second, a charging current value corresponding to the acquired number of changes of difference between the voltage of the D+ pin and the voltage of the D- pin of the USB interface is searched for in a preset current corresponding table; third, the charging current is reset according to the found charging current value. According to the method and system, by acquiring the number of changes of difference between the voltages of the USB pins in the data transmission process, the charging current in the data transmission process is adjusted according to the preset current corresponding table, so that the problem that when the mobile terminal performs USB data transmission, data transmission fails because of unstable voltage is avoided, and stable data transmission is guaranteed while the mobile terminal is charged through the USB.

Description

technical field [0001] The invention relates to the application field of mobile terminal charging, in particular to a charging current setting method and system for mobile terminal USB data transmission. Background technique [0002] In the prior art, the mobile terminal has generally been connected to the computer via USB, and the computer is used to download software (commonly known as "flashing") and transmit data for the mobile terminal through the computer; the process of flashing often takes several minutes or even longer. It is necessary to keep the mobile terminal in a powered state. If the mobile terminal is powered off during the flashing process, the mobile terminal will become unusable (commonly known as "bricking"). At present, although the mobile terminal will be automatically charged after being connected to the computer, if the mobile terminal is flashed, and a large amount of data is being transmitted at high speed on the USB line, if the charging current se...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/10
Inventor 俞斌杨维琴
Owner 威海区域创新中心有限责任公司
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