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Earphone, earphone set and method for processing signals by earphone

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 TDD noise, and reducing FM interference

Inactive Publication Date: 2013-03-06
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, earphone set and method for processing signals by earphone
  • Earphone, earphone set and method for processing signals by earphone
  • Earphone, earphone set and method for processing signals by earphone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment provides a processing method for earphones to receive FM band signals and prevent TDD noise. The method includes the following steps:

[0044] Step S402: Add a device A with high impedance performance at the FM band frequency to the ground network of the earphone to inhibit the terminal ground network from coupling the noise of the FM band frequency to the ground network of the earphone, and the ground network of the earphone serves as the signal reception 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 headset to suppress the terminal ground network from coupling the noise of the cellular frequency to the ground network of the headset.

[0046] Step S406: A switch is added between the AB device and the headset network, and it has a selection function, that is, when the terminal function selects the FM function, the path selects the A device; when ...

Embodiment 2

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

[0050] Step S502: Add a high-frequency analog switch or CMOS switch to the ground network of the headset, and have the function of selecting two. The ground of the headset serves as the receiving antenna of the radio.

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

[0052] Step S506: Connect a magnetic bead in series to the other of the two paths of the switch, which has high impedance performance at FM frequency, that is, the impedance at 100 MHz is 600 ohms or higher.

[0053] Step S508: The series-connected magnetic beads of the two paths are connected to the ground network of the terminal system.

[0054] The circuit realized by the above steps can solve the pr...

Embodiment 3

[0056] This embodiment provides an earphone circuit, Figure 4 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 earphone ground network refers to the ground network in the earphone signal. The earphone ground network has two signals, 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 earphone ground The network serves as the signal reception of the FM receiver. The system ground network refers to the ground plane of the entire mobile phone system. The entire ground plane carries the noise generated by various parts of the mobile phone, including noise in the FM frequency band (100MHz) and noise in the frequency band of the wireless communication system (near 1GHz or 2GHz). A device is a device with high resistance performance in the FM frequency band....

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Abstract

The invention discloses an earphone, an earphone set and a method for processing signals by the earphone. The earphone comprises a first interface, a second interface, a switch and an isolation unit. The isolation unit comprises a first isolator and a second isolator connected with the first isolator in parallel. The first interface is connected with the second interface through the isolation unit. The first interface is set as a ground network connected with the earphone set. The second interface is connected with a ground wire of a mobile terminal with the earphone. The first isolator is used for blocking signals coupled to modulated frequency of the ground network. The second isolator is used for blocking signals coupled to cellular communication frequency. The switch is used for selectively closing the first isolator, the first interface and the second interface or selectively closing the second isolator, the first interface and the second interface. FM (frequency modulation) jamming is lowered while TDD (time division duplex) noise is decreased, and user experience is improved.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10H04R3/00
CPCH04M3/00H01Q1/52H04R1/1041H04R1/1008H01Q1/242H04R2420/07H04B1/18
Inventor 李超孙勃曾宪铮张晓峰
Owner ZTE CORP
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