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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

Active Publication Date: 2018-03-20
TENDYRON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the signal amplitude from the sound code product to the host is uncontrollable, the present invention provides a sound code product and a sound code communication channel circuit

Method used

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  • Audio code products and audio code communication channel circuits
  • Audio code products and audio code communication channel circuits
  • Audio code products and audio code communication channel circuits

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment provides a sound code communication channel circuit, figure 2 A schematic structural diagram of the voice code communication channel circuit provided in this embodiment.

[0028] Such as figure 2 As shown, the audio code communication channel circuit provided in this embodiment mainly includes: an audio connector 200, an identification circuit 202, a first audio code communication channel 204-1 ( figure 2 Shown by the equivalent resistance of the electronic components on the first sound code communication channel 204-1), the second sound code communication channel 204-2 ( figure 2 Shown by the equivalent resistance of the electronic components on the second sound code communication channel 204-2), the first pull-down resistor 206-1 and the second pull-down resistor 206-2, wherein the first pull-down resistor 206-1 and the resistance value of the second pull-down resistor 206-2 is within a preset range, the output terminal of the first audio code co...

Embodiment 2

[0042] Using the audio code communication channel circuit of Embodiment 1, when the audio code product is inserted into the host, the host MIC has a capacitor 201, a first pull-down resistor 206-1, a second pull-down resistor 206-2 and a capacitor 203 path to the ground, Since the path resistance of the electronic component 206-1 and the electronic component 206-2 is small, the path exhibits a capacitive characteristic, which affects the earphone detection after the audio code product is inserted into the host, thereby affecting the earphone identification. Therefore, this embodiment improves the audio code communication channel circuit in the first embodiment.

[0043] Figure 6 For the structural representation of the sound code communication channel circuit of the present embodiment, the sound code communication channel circuit of the present embodiment has increased an analog switch 208 on the basis of Embodiment 1, and the analog switch 208 is connected to the first pull-...

Embodiment 3

[0048] Figure 7 It is a structural schematic diagram of the audio code communication channel circuit of the present embodiment, as Figure 7As shown, the difference between the audio code communication channel circuit of the present embodiment and the second embodiment is that two module switches (i.e., the analog switch 208-1 and the analog switch 208-2) are used in the present embodiment, wherein the analog switch 208 -1 is connected to the output of the first pull-down resistor 206-1 and the first audio code communication channel 204-1, and the analog switch 208-2 is connected to the second pull-down resistor 206-2 and the second audio communication channel 204-2 Between the output terminals of the two, they are respectively used to control the access of the first pull-down resistor 206-1 and the second pull-down resistor 206-2. In this embodiment, the analog switches 208-1 and 208-2 are normally disconnected. After the audio code product is inserted into the host, when t...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R3/00
CPCH04B1/401H04R3/00H04R5/04H04R2420/09
Inventor 李东声
Owner TENDYRON CORP
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