Double contact mobile phone headphone socket

A headphone socket and dual-contact technology, applied in the direction of earpieces/headphone accessories, etc., can solve the problems of large size of headphone sockets, inability to recognize headphone insertion, low versatility, etc., and achieve the effect of solving impedance matching and bias voltage problems.

Inactive Publication Date: 2011-12-21
SHENZHEN GIONEE COMM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the headphone socket is large in size and not very versatile, and when the headphone socket detects stolen goods on the feet, it will not be able to recognize the insertion of the headphone

Method used

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  • Double contact mobile phone headphone socket
  • Double contact mobile phone headphone socket
  • Double contact mobile phone headphone socket

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Embodiment Construction

[0026] In order to illustrate the idea and purpose of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] See Figure 4 as shown, Figure 4 It is the schematic diagram of the circuit using the low level detection of the male head in the present invention. The invention provides a low-level detection circuit for the male earphone of a mobile phone, which includes an earphone socket JK601 and a mobile phone CPU. Pin 2 is the microphone pin MIC, pin 3 is the right channel pin MP3R, pin 5 is the left channel pin MP3L, pin 4 is the signal detection pin, and the signal detection pin is connected to the detection signal input of the mobile phone CPU through the reserved resistor R63 terminal HEAD_DET, and the reserved resistor R63 is connected to the power supply through a current limiting resistor; the right channel pin MP3R is connected to the audio signal input terminal XMP3...

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Abstract

The invention discloses a double-contact mobile phone earphone socket, which is installed in a mobile phone and is connected with the central processing unit (CPU) of the mobile phone through a mobile phone earphone detection circuit. A ground pin and a detection pin are arranged in the jack of the double-contact mobile phone earphone socket and are connected with the CPU of the mobile phone through the mobile phone earphone detection circuit. An earphone male connector in the invention is provided with a ground section, a microphone (MIC) section, a left sound channel section and a right sound channel section, wherein only the ground section can be used for realizing conduction. Compared with the prior art, by detecting the insertion of the male connector, a ground metal ring on an earphone can be connected with two detection pins and therefore the problems in impedance matching and bias voltage are solved; and moreover, by using the male connector to conduct the detection pins, the problem of dust and foreign matters is solved, and if the foreign matters are attached onto an elastic piece, through the action of inserting the male connector, the foreign matters can be rubbed off.

Description

technical field [0001] The invention relates to mobile phone earphone detection technology, in particular to a double-contact mobile phone earphone socket. Background technique [0002] Along with the fast development of mobile communication technology, the use of mobile phone is also more and more extensive. Among them, the function of the earphone jack on the mobile phone is: when the earphone is inserted, the sound on the mobile phone is switched to the earphone, and how to judge whether there is an earphone inserted in the mobile phone is usually detected by an interrupt signal, and the interrupt signal is Triggered by a sudden change in level. [0003] At present, the common level mutation detection methods for mobile phone earphone insertion detection mainly include the following: [0004] 1. Use the high level detection of the detection pin of the headphone socket. Before the male plug of the headphone is inserted, the detection pin of the headphone socket is connec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10
Inventor 刘立荣杨建成
Owner SHENZHEN GIONEE COMM EQUIP
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