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Electronic device having waterproof circuit

A technology of electronic equipment and circuits, which is applied in the field of electronic equipment with waterproof circuits, can solve the problems of poor waterproofness of USB interfaces, adding silicone plugs, complicated user operations, etc., and achieve the effect of reducing operation complexity and improving waterproof performance

Inactive Publication Date: 2017-05-10
QINGDAO HISENSE MOBILE COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an electronic device with a waterproof circuit, which is used to solve the problem that the existing electronic device has poor waterproof performance of the USB interface, and the addition of silicone plugs leads to complicated user operations.

Method used

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  • Electronic device having waterproof circuit
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Embodiment Construction

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049]Existing electronic devices, such as portable electronic devices such as mobile phones, cameras, and tablet computers, are usually provided with a USB interface, and the USB interface includes a plurality of exposed metal pins for mounting external devices. Multiple metal pins include an OTG mode detection pin, which is used to detect whethe...

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Abstract

The invention provides an electronic device having a waterproof circuit, the electronic device comprising: a USB chip unit, an OTG mode detection pin and a waterproof detection unit. The waterproof detection unit includes a first resistor, a voltage comparison circuit and a reference voltage providing circuit. The voltage comparison circuit is used for sending a waterproof instruction to the USB chip unit when a difference between the voltage at a first input end and the voltage at a second input end is within a preset range, wherein the waterproof instruction is used for instructing a USB interface to switching off the connection of an external device. The USB chip unit is used for controlling the USB interface of the electronic device to switch off the OTG mode when receiving the waterproof instruction. The electronic device having the waterproof circuit avoids triggering the OTG mode by accident, reduces damage, caused by leakage, to the battery of the electronic device, improves the waterproof performance of the existing electronic device so that a user does not need to use a silicone plug and operational complexity is reduced.

Description

technical field [0001] The invention relates to circuit technology, in particular to an electronic device with a waterproof circuit. Background technique [0002] At present, in the field of consumer electronics, a Universal Serial Bus (USB for short) interface has become a standard configuration of electronic devices to implement functions such as data transmission and charging. OTG (On-The-Go) mode is a main function of the USB interface. In OTG mode, the device with USB interface can be used as a master device to support mounting peripherals (such as U disk, mouse, etc.), and provide 5V / 500mA or 5V / 1A drive capability. The existing USB interface can turn on the OTG mode when it detects that a mounted peripheral is plugged in. [0003] However, in actual use, when the electronic device falls into the water, or the user uses the electronic device in the swimming pool, the metal pins of the USB interface are completely exposed to the liquid. Since the liquid itself can be ...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/0428G05B2219/24215
Inventor 张庆凯张新涛张伟
Owner QINGDAO HISENSE MOBILE COMM TECH CO LTD
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