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A balanced earphone and mobile terminal based on usb-c plug

A mobile terminal, USB-C technology, applied in earphone/headphone accessories and other directions, can solve the problems of weak anti-interference ability and low stereo separation, and achieve the effect of high common mode rejection ratio, not easy to interfere, and improved separation

Active Publication Date: 2018-04-03
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a balanced earphone and mobile terminal based on a USB-C plug to solve the technical problems of low stereo separation and weak anti-interference ability of USB-C single-ended earphones in the prior art

Method used

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  • A balanced earphone and mobile terminal based on usb-c plug
  • A balanced earphone and mobile terminal based on usb-c plug
  • A balanced earphone and mobile terminal based on usb-c plug

Examples

Experimental program
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Embodiment 1

[0029] figure 1 It is a schematic diagram of a balanced earphone based on a USB-C plug provided in Embodiment 1 of the present invention, and the earphone can be used for plugging and cooperating with a mobile terminal having a USB-C socket. Such as figure 1 As shown, a balanced earphone based on a USB-C plug provided in this embodiment includes:

[0030] An earphone line 11 , an earphone unit 12 , and a USB-C plug 13 , the earphone line 11 is connected between the earphone unit 12 and the USB-C plug 13 .

[0031] Exemplarily, the earphone unit 12 is an earphone receiver for playing sound, and includes a left earphone unit 121 and a right earphone unit 122 . The earphone unit 12 may be: an in-ear earphone unit, an earplug earphone unit, a headphone unit, or an earphone unit. figure 2 It is a schematic structural diagram of a balanced earphone based on a USB-C plug applicable to this embodiment. Such as figure 2 As shown, the earphone cable 11 is connected between the ea...

Embodiment 2

[0040] image 3 A USB-C-based balanced headphone pin connection diagram provided for Embodiment 2 of the present invention. This embodiment is based on Embodiment 1. On the basis of Embodiment 1, the first interface, the second interface, The pin positions corresponding to the third interface and the fourth interface are further defined, such as image 3 As shown, specifically:

[0041] The USB-C plug includes interface pins, which are divided into A1 pins to A12 pins and B1 pins to B12 pins, wherein the A1 pins to A12 pins are symmetrically distributed with the B1 pins to B12 pins.

[0042] The first interface 131 corresponds to the A6 pin, the second interface 132 corresponds to the B6 pin, the third interface 133 corresponds to the A7 pin, and the fourth interface 134 corresponds to the B7 pin.

[0043] Exemplarily, the first interface 131 corresponds to the A6 pin, that is, the A6 pin is connected to the left positive transmission line 111 for transmitting the left chann...

Embodiment 3

[0046] Figure 4 A USB-C-based balanced headphone pin connection diagram provided for Embodiment 3 of the present invention. The difference between this embodiment and Embodiment 2 is that the first interface, the second interface, the third interface and the fourth interface correspond to The pin location changes as the Figure 4 As shown, specifically:

[0047] The USB-C plug includes interface pins, which are divided into A1 pins to A12 pins and B1 pins to B12 pins, wherein the A1 pins to A12 pins are symmetrically distributed with the B1 pins to B12 pins.

[0048] The first interface 131 corresponds to the B6 pin, the second interface 132 corresponds to the A6 pin, the third interface 133 corresponds to the A7 pin, and the fourth interface 134 corresponds to the B7 pin.

[0049] Exemplarily, the first interface 131 corresponds to the B6 pin, that is, the B6 pin is connected to the left positive transmission line 111 for transmitting the left channel positive half-cycle a...

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Abstract

The invention discloses a balanced earphone and a mobile terminal based on a USB-C plug. The earphone includes an earphone cable, an earphone unit connected with the earphone cable, and a USB-C plug. The earphone cable includes a left-channel analog differential The left positive transmission line and the left negative transmission line of the audio signal, and the right positive transmission line and the right negative transmission line for transmitting the analog differential audio signal of the right channel; the USB‑C plug includes a first interface connected to the left positive transmission line, and a left negative transmission line. The connected second interface, the third interface connected with the right positive transmission line, and the fourth interface connected with the right negative transmission line; the first interface and the second interface are symmetrical first channel interfaces, and the third interface and the fourth interface are Symmetrical second channel interface. The earphone can utilize the symmetrical arrangement of the USB‑C interface to effectively realize the balanced transmission function of sound signals, and the signals of the left and right channels will not crosstalk each other, the stereo separation is greatly improved, and the common mode rejection ratio is high, which is not easy to be affected by interference, and the signal-to-noise ratio is significantly improved.

Description

technical field [0001] The invention relates to the technical field of earphones, in particular to a balanced earphone based on a USB-C plug and a mobile terminal. Background technique [0002] At present, mainstream earphones on the market, including standard 3-segment, 4-segment 3.5mm plug and 6.5mm plug earphones, all use single-ended transmission, that is, the common ground wire of the left and right channels is used as the signal. The DC impedance of the loop and the ground wire will significantly reduce the separation of the left and right channels, affecting the effect of the stereo sound field of the headset. Balanced (differential) earphones mean that the left and right channel signals of the earphones are transmitted in a differential form. The form of differential transmission is adopted, and its ability to resist common mode interference is also greatly enhanced, because it is very suitable for use in strong radiation occasions, such as GSM mobile phones. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/10
Inventor 梁伟杰
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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