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Method and apparatus for controlling USB interface to supply power and electronic device

A technology of USB interface and electronic equipment, which is applied in the direction of measuring device, data processing power supply, electrical digital data processing, etc., and can solve the problem of high power consumption of earphones, etc.

Inactive Publication Date: 2016-09-28
LETV HLDG BEIJING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The VBUS pin of the existing USB interface only provides 5V voltage, and when the earphone connected to the electronic device is in the analog mode, the VBUS pin provides a voltage less than 5V to ensure the normal operation of the earphone. At this time, the VBUS pin only provides 5V voltage This leads to higher power consumption of the earphones

Method used

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  • Method and apparatus for controlling USB interface to supply power and electronic device
  • Method and apparatus for controlling USB interface to supply power and electronic device
  • Method and apparatus for controlling USB interface to supply power and electronic device

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Embodiment Construction

[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0035] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

[0036] In all examples shown and discussed herein, any specific values ​​should be construed as illustrative only and not limiting. Accordingly, other instances of the exemplary embodiment may hav...

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PUM

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Abstract

The invention discloses a method and an apparatus for controlling a USB interface to supply power and an electronic device. The method comprises the steps of judging whether a peripheral connected with the electronic device through the USB interface is in a digital mode or a simulative mode according to a current application; if the peripheral is in the digital mode, setting a VBUS pin of the USB interface to have a level corresponding to the digital mode, wherein the level corresponding to the digital mode is set to supply power to the peripheral in the digital mode; and if the peripheral is in the simulative mode, setting the VBUS pin of the USB interface to have a level corresponding to the simulative mode, wherein the level corresponding to the simulative mode is set to supply power to the peripheral in the simulative mode. According to the method and apparatus, by judging whether the peripheral is in the digital mode or the simulative mode and setting the VBUS pin to have a proper level value, the VBUS pin can be set to have a relatively low level value when the peripheral is in the simulative mode, so that the power consumption of the peripheral is reduced.

Description

technical field [0001] The present invention relates to the field of USB interface power supply, and more particularly, the present invention relates to a method, device and electronic device for controlling USB interface power supply. Background technique [0002] The pins of the USB interface include at least a VBUS pin, a D+ pin, a D- pin and a GND pin, wherein the VBUS pin provides a voltage for supplying power to peripheral devices of the USB interface. [0003] The VBUS pin of the existing USB interface only provides 5V voltage. When the headset connected to the electronic device is in analog mode, the VBUS pin provides a voltage less than 5V to ensure the normal operation of the headset. At this time, the VBUS pin only provides 5V voltage This results in a large power consumption of the headset. SUMMARY OF THE INVENTION [0004] An object of the present invention is to provide a new technical solution for controlling the power supply of the USB interface. [0005]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/26G06F13/40
CPCG06F1/266G06F13/4068Y02D10/00
Inventor 李云志
Owner LETV HLDG BEIJING CO LTD