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Audio frequency port identification circuit and user equipment

An audio port and circuit technology, applied in the electronic field, can solve problems such as inability to communicate with user equipment, and inability to identify the status of the audio port connection, and achieve the effect of strong versatility

Active Publication Date: 2014-02-19
SHENZHEN IBOX INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an audio port identification circuit and user equipment, aiming to solve the problem in the prior art that the audio port cannot be identified and cannot communicate with the user equipment

Method used

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  • Audio frequency port identification circuit and user equipment
  • Audio frequency port identification circuit and user equipment
  • Audio frequency port identification circuit and user equipment

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] The invention provides an audio port identification circuit, the circuit is as figure 1 As shown, it includes: polarity conversion circuit 11, power supply control circuit 12 and low dropout regulator LDO13; where:

[0024] The first input port and the second input port of the polarity conversion circuit 11 are respectively connected with the first interface and the second interface of the audio port, and the output port of the polarity conversion circuit 11 is connected with the input port of the power control circuit 12, and the power control circuit The output port of 12 is connected wit...

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Abstract

The invention is suitable to be used in the field of electronic. The invention provides an audio frequency port identification circuit and a piece of user equipment. The circuit comprises a polarity conversion circuit, a power control circuit, an LDO. A first input port and a second input port of the polarity conversion circuit are respectively connected with a first interface and a second interface of an audio frequency port. An output port of the polarity conversion circuit is connected with an input port of the power control circuit. An output port of the power control circuit is connected with a third pin of the LDO. The technical scheme is advantaged by good versatility.

Description

technical field [0001] The invention belongs to the field of electronics, and in particular relates to an audio port identification circuit and user equipment. Background technique [0002] With the intelligentization of user equipment, more and more peripherals need to communicate with user equipment. It is a good choice to choose the audio port as the data channel, because mobile phones and other user equipment support 3.5mm headphone plugs. The signal is transmitted through the audio port as an analog signal. The main chip of the peripheral device converts the digital signal into an analog signal through the digital-to-analog conversion, and transmits it to the user equipment through the microphone (MIC) port, and then the user equipment performs analog-to-digital conversion on the signal. The analog signal is restored to a digital signal. [0003] In realizing the technical solution of the present invention, it is found that the prior art has the following problems: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
Inventor 韩森曾程郑玉峰
Owner SHENZHEN IBOX INFORMATION TECH CO LTD