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USB interface protection circuit and display equipment

A USB interface and protection circuit technology, which is applied in the field of USB interface protection circuits and display devices with the USB interface protection circuit, can solve problems such as damage to display devices and display device crashes, and achieve the effect of avoiding normal operation

Inactive Publication Date: 2018-01-19
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During use, if the consumer's external storage device (such as U disk, mobile hard disk) is damaged (such as a short circuit phenomenon), then when the external storage device is inserted into the display device to play, it will often cause the display The device freezes, or even damages the display device

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  • USB interface protection circuit and display equipment
  • USB interface protection circuit and display equipment

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Embodiment Construction

[0018] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, the embodiments are provided to explain the principles of the invention and its practical application, thereby enabling others skilled in the art to understand the invention for various embodiments and with various modifications as are suited to particular intended uses.

[0019] In the drawings, the thicknesses of layers and regions are exaggerated for clarity. Like reference numerals refer to like elements throughout the drawings.

[0020] figure 1 It is a schematic diagram of a module of a USB interface protection circuit according to an embodiment of the present invention.

[0021] refer to figure 1 , the USB interface protection circuit according to the embodiment of the present invent...

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PUM

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Abstract

The invention provides a USB interface protection circuit. The USB interface protection circuit comprises an interface module, a power supply module and a comparison module; the interface module is used for being connected with external storage equipment having a USB interface; the power supply module is used for receiving external input power supply voltage, generating working voltage for normalworking of the external storage equipment according to the external input power supply voltage, and providing the working voltage for the external storage equipment through the interface module; the comparison module is used for comparing the working voltage with reference voltage to generate a comparison signal, and providing the comparison signal for the power supply module; and the comparison signal is used for controlling the power supply module to work or not. The invention further provides display equipment having the USB interface protection circuit. In the USB interface protection circuit and the display equipment provided by the invention, when the external storage equipment is abnormal, circuit connection between the external storage equipment and the USB interface protection circuit is cut off; and thus, influence on normal working of electronic equipment having the USB interface protection circuit can be avoided.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a USB interface protection circuit and a display device with the USB interface protection circuit. Background technique [0002] With the development of semiconductor manufacturing process, the chip processing speed is increasing day by day. Now more and more consumers use external storage devices such as U disk and mobile hard disk with USB interface to directly play movies, music, pictures and other multimedia on the display device. [0003] During use, if the consumer's external storage device (such as U disk, mobile hard disk) is damaged (such as a short circuit phenomenon), then when the external storage device is inserted into the display device to play, it will often cause the display The device freezes, or even damages the display device. Contents of the invention [0004] In order to solve the above-mentioned problems in the prior art, the purpose of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/12
Inventor 李文东
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD