Earphone recognition apparatus and method for mobile communication terminal

A technology of mobile communication terminal and identification device, which is applied in the directions of telephone communication, electrical components, branch equipment, etc., can solve the problem of earphone whistle, etc., and achieve the effect of avoiding false hanging up and improving circuit design.

Inactive Publication Date: 2009-06-10
TECHFAITH INTELLIGENT HANDSET TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. The earphones howling during the plugging and unplugging process

Method used

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  • Earphone recognition apparatus and method for mobile communication terminal
  • Earphone recognition apparatus and method for mobile communication terminal
  • Earphone recognition apparatus and method for mobile communication terminal

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0036] In order to better illustrate the present invention, the present invention will be further described through specific examples below.

[0037] The device of the present invention includes an earphone jack, a baseband analog-to-digital converter, and a debounce screening module. As shown in FIG. The primary judgment identification module includes an inductor (L22), one end of which is connected to the right channel of the earphone of the earphone socket; the other end of the inductor (L22) is connected to the audio line of the right channel of the earphone of the baseband chip;

[0038] One end of the capacitor (C21) and the resistor (R27) are connected to one end of the inductor (L22), and the other ends of the capacitor (C21) and the resistor (R27) are grounded respectively;

[0039] One end of the capacitor (C13) is connected to the cathode of the diode (D11) and then connected to the other end of the inductor (L22), and the other end of the capacitor (C13) and the an...

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Abstract

The invention discloses a headset identification device and a headset identification method in a mobile communication terminal, which is used for detecting whether a headset is accessed to the mobile communication terminal or not. The headset identification device in the mobile communication terminal comprises a handset jack, a baseband analog-to-digital converter, a de-jitter screening module, a first-stage judgment identification module, and a second-stage judgment identification module, wherein the first-stage judgment identification module is used as a trigger condition for second-stage judgment; and the second-stage judgment identification module finishes the identification function to the headset. The device has the advantages that the device, based on the prior headset circuit structure, overcomes the defects of error hangup, error answering and squeaking by adding double headset plugging/unplugging judgment besides the realization of basic functions such as the answering/hangup of a dual-track headset receiver, a headset MIC and headset keys.

Description

technical field [0001] The invention relates to a detection device and method applied to a mobile communication terminal, in particular to a device and method for detecting whether an earphone is connected in a mobile communication terminal. Background technique [0002] Most of the mobile communication terminals in the market currently use jack-type earphone jacks. The earphone detection and identification device usually only judges that the earphone plug microphone 4 is inserted into the earphone jack, which triggers the microphone line of the earphone jack. When the headset is considered to be plugged in, the following problems will occur: [0003] 1. In the detection and identification of mobile phone jack earphones, as well as in the process of slow plugging or unplugging or not fully plugging in / out during the user's use, problems such as hanging up and answering by mistake during the call [0004] 2. The earphones howling during the plugging and unplugging process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/725H04M1/72409
Inventor 刘磊
Owner TECHFAITH INTELLIGENT HANDSET TECH BEIJING
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