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Earphone device, earphone and signal processing method using earphone device

A headphone and signal technology, which is applied in the direction of headphone mechanical/electronic switch, earpiece/headphone accessories, on-ear/around-ear headphones, etc., to achieve the effects of improving practicability, reducing FM interference, and reducing TDD noise

Inactive Publication Date: 2017-08-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a mobile terminal needs to reduce TDD noise interference and also needs to reduce FM interference, no effective solution has been proposed so far

Method used

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  • Earphone device, earphone and signal processing method using earphone device
  • Earphone device, earphone and signal processing method using earphone device
  • Earphone device, earphone and signal processing method using earphone device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment provides a kind of processing method that earphone receives FM band signal and prevents TDD noise, and this method comprises the following steps:

[0044] Step S402: Add a device A with high impedance performance in the FM frequency band to the ground network of the earphone to suppress the ground network of the terminal from coupling the noise of the FM frequency band frequency to the ground network of the earphone, and the ground network of the earphone is received as a signal of the radio The internet.

[0045] Step S404: Add a device B with high impedance performance at the cellular communication frequency to the ground network of the earphone to prevent the ground network of the terminal from coupling the noise of the cellular frequency to the ground network of the earphone.

[0046] Step S406: Add a switch between the AB device and the earphone network, and have a selection function, that is, when the terminal function selects the FM function, the ...

Embodiment 2

[0049] This embodiment provides an earphone circuit, which is realized through the following steps:

[0050] Step S502: Add a high-frequency analog switch or CMOS switch on the ground network of the earphone, and it has a one-to-two function. The ground of the earphone is used as the receiving antenna of the radio,

[0051] Step S504: One of the two paths of the switch is connected with magnetic beads in series, which has high impedance performance at the cellular communication frequency, that is, the impedance at the cellular communication frequency such as 1GHz or 2GHz is 600 ohms, or the impedance is higher.

[0052] Step S506: The other path of the two paths of the switch is connected with magnetic beads in series, which has high impedance performance at FM frequency, that is, the impedance at 100 MHz is 600 ohms, or the impedance is higher.

[0053] Step S508: The serially connected magnetic beads of the two paths are jointly connected to the ground network of the termina...

Embodiment 3

[0056] This embodiment provides an earphone circuit, Figure 4 It is a schematic diagram of the connection mode of the earphone circuit according to the embodiment of the present invention, such as Figure 4 as shown, Figure 4 The ground network of the earphone refers to the ground network in the earphone signal. The ground network of the earphone has two ends of the signal, one end is connected to the ground signal of the earphone accessory, and the other end is connected to the ground near the earphone circuit in the audio circuit. The ground of the earphone The network is received as a signal from an FM receiver. The system ground network refers to the ground plane of the entire mobile phone system. The entire ground plane carries noise generated by various parts of the mobile phone, including FM frequency band (100MHz) noise and wireless communication system frequency band (near 1GHz or 2GHz) noise. A device is a device with high resistance performance in the FM frequen...

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PUM

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Abstract

The invention discloses an earphone device, an earphone and a signal processing method using the earphone device. The earphone device comprises: a first interface, a second interface, a switch and an isolating unit. The isolating unit comprises a first isolating body and a A second isolator connected in parallel, the first interface is connected to the second interface through the isolation unit, wherein the first interface is set to connect to the ground network of the earphone; the second interface is used to connect to the ground wire of the mobile terminal where the earphone device is located; The first isolator is used to block the signal coupled to the FM band of the ground network; the second isolator is used to block the signal coupled to the cellular communication frequency band; the switch is used to select the first isolator, the first interface and the second interface, or choose to conduct the second isolator, the first interface and the second interface. Through the present invention, while reducing TDD noise interference, it is also necessary to reduce FM interference, thereby improving user experience.

Description

technical field [0001] The present invention relates to the field of communication, in particular to an earphone device, an earphone and a signal processing method using the earphone device. Background technique [0002] With the continuous development of mobile terminal technology, the functions and requirements of mobile terminal functions of users are also getting higher and higher. [0003] Taking the wireless terminal receiving broadcast as an example, the existing mobile phone system has various clocks. The speed of the central processing unit (Central Processing Unit, referred to as CPU) itself is at least 100MHz, and its reference clock is generally between 12MHz-30MHz. The multiplier can easily reach between 72MHz-120MHz. The clock frequency of each module of the mobile terminal is also different, and the mixing frequency generated between each frequency is also very easy to fall between 72MHz-120MHz, so that the internal signal of the entire mobile terminal is str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/10H04R3/00
CPCH01Q1/242H01Q1/52H04B1/18H04R1/1008H04R1/1041H04R2420/07
Inventor 李超孙勃曾宪铮张晓峰
Owner ZTE CORP