Audio code products and audio code communication channel circuits

A sound code communication channel and circuit technology, applied in the electronic field, can solve the problem of uncontrollable signal amplitude, achieve the effect of improving the host range and ensuring normal output
CN104507006BActive Publication Date: 2018-03-20TENDYRON CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
TENDYRON CORP
Publication Date
2018-03-20

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Abstract

The invention discloses a sound code product and a sound code communication channel circuit. The circuit includes: an audio connector, an identification circuit, a first audio code communication channel and a second audio code communication channel, a first pull-down resistor and a second pull-down resistor, wherein the output of the first audio code communication channel passes through a first capacitor One of the pins in the first pin and the second pin of the audio connector is connected, and the output end of the second audio code communication channel is connected with the first pin of the audio connector and the other in the second pin through the second capacitor A pin connection, the first end of the identification circuit is connected to one of the first pin and the second pin, and the second end is connected to the other pin of the first pin and the second pin, The first end of the first pull-down resistor is connected with the output end of the first sound code communication channel, and the second end is grounded, and the first end of the second pull-down resistance is connected with the output end of the second sound code communication channel, and the second end is grounded. , the resistance values ​​of the first pull-down resistor and the second pull-down resistor are within a preset range.
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Description

technical field

[0001] The invention relates to the field of electronic technology, in particular to a sound code product and a sound code communication channel circuit. Background technique

[0002] At present, audio connectors are divided into three-segment audio connectors and four-segment audio connectors, among which, four-segment audio connectors are further divided into national standard four-segment connectors and American standard four-segment connectors. Pin 1 of the national standard four-section connector (also called an interface) is the left channel pin, pin 2 is the right channel pin, pin 3 is the microphone pin, pin 4 is the ground pin, and The pin setting method of the American standard four-segment interface is different. Among them, pin 1 is the left channel pin (also called the left channel interface), and pin 2 is the right channel pin (also called right channel interface), pin 3 is a ground (GND) pin (also called a GND interface), and pin 4 is a microp...

Claims

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