Earphone cable multiplexing method and device, mobile terminal and storage medium

A multiplexing device and headphone cable technology, applied in the direction of handset/headphone accessories, headphone mechanical/electronic switches, electrical components, etc., can solve problems such as difficult to achieve FM and audio, and achieve improved user experience, improved receiving performance, and high-quality sound effects

Active Publication Date: 2020-02-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a method and device for multiplexing earphone cables, a mobile terminal, and a storage medium. End-to-end connection, it is difficult to realize the technical problem of compatible use of FM and audio

Method used

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  • Earphone cable multiplexing method and device, mobile terminal and storage medium
  • Earphone cable multiplexing method and device, mobile terminal and storage medium
  • Earphone cable multiplexing method and device, mobile terminal and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] For the existing Type-C interface as a USB multifunctional integrated design, such as figure 2 As shown, since the USB and earphone share this interface, the audio signal and the USB signal are multiplexed, and the left and right channels of DP, DN and the earphone are multiplexed. S1-S4 is the external metal shell of the USB interface. If Type- C. After the earphone is connected to the interface on the main board of the terminal, the shielding layer on the earphone cable will be connected to the metal shell. In the current terminal electronic circuit design, the metal shell on the interface is directly connected to the ground terminal of the terminal by default. of. Due to the current design of the earphone cable, in order to improve the audio quality of the earphone, a shielding layer is provided on the periphery of the earphone cable. The shielding layer is connected to the ground wire of the earphone interface, so when in use, the shielding layer is directly ground...

Embodiment 2

[0069] The method for multiplexing earphone cables provided by the embodiment of the present invention will be described in detail below in conjunction with a specific implementation circuit structure, see Figure 5 and 6 As shown, in this embodiment, two frequency selection control circuits are provided on the Type-C interface of the terminal, which are respectively connected between the shielding layer of the earphone cable and the ground terminal of the terminal, and between the earphone cable and the ground terminal of the terminal.

[0070] Such as Figure 5 As shown, the frequency selection control circuit includes a frequency selection sub-circuit and a switching switch, wherein the frequency selection sub-circuit is composed of capacitors and inductors connected in parallel, or is formed by magnetic beads with high impedance at a specific frequency, and the switching switch Connected in parallel to the frequency selection sub-circuit, one end of the frequency selectio...

Embodiment 3

[0081] This embodiment provides an earphone cable multiplexing device, which can be applied to various mobile terminals. The terminal here is a terminal with a Type-C interface, and the earphone cable is also an earphone cable with a Type-C earphone interface. , see Figure 9 As shown, the device includes: a frequency selection control circuit 81, an acquisition module 82 and a control module 83, wherein:

[0082] The frequency selection control circuit 81 is arranged between the Type-C interface of the terminal and the ground terminal of the terminal;

[0083] The acquisition module 82 is used to obtain the current working state of the terminal, which includes a frequency modulation function state and a non-frequency modulation function state, wherein the non-frequency modulation function state can be an audio state, a charging state, a USB state, etc., that is, a non-frequency modulation function state It can be all the functional states that can use the Type-C interface ex...

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Abstract

The embodiment of the invention provides an earphone cable multiplexing method and device, a mobile terminal and a storage medium, being characterized in that by arranging a frequency selection control circuit between a Type-C interface on a terminal and the ground end of the terminal, when the working state of the terminal is a frequency modulation function state, the frequency selection controlcircuit is controlled to work in a frequency modulation working mode, so as to enable the earphone cable to be not directly connected with the ground end of the terminal; the phenomenon that antenna signals are shielded due to the fact that the metal shielding layer of the earphone cable is directly grounded is avoided; the problem that the shielding layer influences the receiving index when the earphone cable is used as the antenna is solved; meanwhile, when the earphone is not needed to realize the frequency modulation function, the high-quality sound effect of the earphone is also ensured;and through the design, the compatibility problem of the FM function and the earphone function is realized, and the receiving performance of the earphone cable as an antenna is also improved, and theuse experience of a user is improved.

Description

technical field [0001] Embodiments of the present invention relate to but are not limited to the field of terminal technologies, and specifically, relate to but are not limited to a method and device for multiplexing earphone cables, a mobile terminal, and a storage medium. Background technique [0002] With the integrated design of the terminal interface, especially the integration of the USB interface for earphones, charging and other functional interfaces, if additional settings are added to the USB interface to realize the FM (frequency modulation) function, the design method is to use the ground wire of the earphone or The left and right channels are used as low-frequency (such as FM) receiving and transmitting antennas. In practical applications, it is recommended to use the ground wire as the antenna. However, if the earphone is equipped with a shielding layer, the receiving performance of the left and right channels as the antenna will be received by the shielding lay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/401H04B1/00H04R1/10
CPCH04B1/401H04B1/006H04R1/1041H04B1/00H04R1/10H04B1/18
Inventor 孙银川
Owner ZTE CORP
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