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usb interface multiplexing circuit, mobile terminal and earphone

A USB interface and multiplexing circuit technology, which is applied in the direction of handset/headphone accessories, headphone mechanical/electronic switches, electrical components, etc., can solve the problems that cannot meet the development trend of mobile terminals, and achieve the effect of reducing the number and meeting the development trend

Active Publication Date: 2019-05-07
QINGDAO HISENSE MOBILE COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] An embodiment of the present invention provides a universal serial bus USB interface multiplexing circuit, a mobile terminal and an earphone, so as to overcome the problem in the prior art that it is impossible to detect whether the multiplexing interface is inserted into a peripheral device that requires data transmission or audio transmission. Peripherals, which cannot meet the development trend of mobile terminals

Method used

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  • usb interface multiplexing circuit, mobile terminal and earphone
  • usb interface multiplexing circuit, mobile terminal and earphone
  • usb interface multiplexing circuit, mobile terminal and earphone

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Embodiment Construction

[0030] With the development of communication technology, the existing mobile terminals are developing towards ultra-thin and integrated. Therefore, the number of peripheral interfaces in the mobile terminal is limited, and it becomes an industry development trend to use the same peripheral interface to be compatible with multiple peripherals.

[0031] In the existing mobile terminals, the USB interface is generally multiplexed to realize the data transmission function and the charging function, and with the continuous development of the communication industry, there is a need to multiplex the USB interface to realize the data transmission function and the audio transmission function. .

[0032] Based on the above development trend, the present invention realizes the audio function and data transmission function by multiplexing the USB connector, thereby effectively reducing the peripheral interfaces in the terminal, and when the USB connector is multiplexed, by detecting the U...

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Abstract

The invention provides a universal serial bus (USB) interface multiplex circuit, a mobile terminal and an earphone. A USB connector is simultaneously multiplexed to support an audio function and a data transmission function, so that the number of peripheral interfaces can be effectively reduced; a processor is utilized to detect signals of the USB connector, and determines whether the USB connector is inserted by a peripheral according to the detection signal; and when the processor determines that the USB connector is inserted by the peripheral, the processor detects voltage value of an audio circuit, and determines the type of the peripheral inserted into the USB connector according to the detected voltage value. By multiplexing the USB connector and determining the type of the peripheral inserted into the USB connector according to the detected voltage value of the audio circuit, reduction of the number of the interfaces in the mobile terminal and judgment of the type of the peripheral can be realized, and thus development trend of the mobile terminal can be met.

Description

technical field [0001] The invention relates to communication technology, in particular to a USB interface multiplexing circuit, a mobile terminal and an earphone. Background technique [0002] With the continuous development of the communication industry, at present, the mobile terminal has evolved from the original single call function to a comprehensive intelligent communication device integrating entertainment and games. [0003] Therefore, the mobile phone needs to be provided with an interface for inserting peripherals requiring data interaction, and the mobile phone also needs to be provided with an interface for inserting earphones and other peripherals for audio transmission. [0004] Multiplexing the interface of the peripheral device for data transmission and the interface for audio transmission into one interface can effectively reduce the number of interfaces in the mobile terminal, thereby satisfying the development trend of the mobile terminal towards ultra-th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/10
CPCH04R1/1041H04R2201/10
Inventor 胡二勐
Owner QINGDAO HISENSE MOBILE COMM TECH CO LTD