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Audio signal receiving and switching device and audio signal transmission system

An audio signal receiving and audio signal technology, which is applied in the electronic field, can solve the problem that the earphone interface cannot be connected to the audio signal receiving device, and achieve the effect of reducing costs

Active Publication Date: 2014-02-19
TENDYRON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] However, using figure 1 For the audio cable shown, since the GND pin of the USB interface is occupied, the D+ and D- pins are respectively used as the audio signal pin and the reference pin of the audio signal receiving device to receive the audio signal, so the headphone jack The MIC pin at the end cannot be connected to the audio signal receiving device, which makes it impossible for the audio signal receiving device to send signals to the audio signal sending device

Method used

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  • Audio signal receiving and switching device and audio signal transmission system
  • Audio signal receiving and switching device and audio signal transmission system
  • Audio signal receiving and switching device and audio signal transmission system

Examples

Experimental program
Comparison scheme
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no. 1 example

[0073] figure 2 It is a schematic structural diagram of the first embodiment of the audio signal transmission system of the present invention; figure 2 As shown, the system includes: an audio signal receiving device and an audio signal switching device; the system is used to receive the audio signal sent by the audio signal sending device through the earphone interface, and transmit the signal to the audio signal sending device.

[0074] The audio signal sending device (for example, a mobile communication terminal) includes: an audio signal sending module, a MIC (microphone) signal receiving module, and an earphone socket.

[0075] The earphone socket includes: audio signal pins (for example, left channel pins, right channel pins), MIC pins, and GND pins (reference signal pins of the audio signal sending end).

[0076] The audio signal sending module is connected with the audio signal pin (for example, left channel pin, right channel pin) and the GND pin of the earphone soc...

no. 2 example

[0098] image 3 It is a schematic structural diagram of the second embodiment of the audio signal transmission system of the present invention; image 3 As shown, the difference between the second embodiment and the first embodiment is:

[0099] In the audio signal conversion device, the audio signal pin (left channel pin and / or right channel pin) of the earphone interface end (earphone plug) is connected to the D-pin of the USB interface end (USB plug), Connect the GND pin of the headphone plug to the D+ pin of the USB plug.

[0100] Correspondingly, in the audio signal receiving device, the audio receiving module uses the D- and D+ pins respectively as the audio signal pin and the reference signal pin of the audio signal receiving end to receive the audio signal; when it is not necessary to consider whether it will affect the audio receiving module When receiving, the signal sending module only needs to change the level of the D+ pin (the reference signal pin of the audio si...

no. 3 example

[0103] Figure 4 is a schematic structural diagram of the third embodiment of the audio signal transmission system of the present invention; Figure 4 As shown, the difference between the third embodiment and the first embodiment is:

[0104] Figure 4 One audio pin (for example, the left channel pin) of the audio signal conversion device in the earphone plug is connected to the primary coil pin of the step-up transformer, and the other audio pin (for example, the right channel pin) is only connected to the The D+ pin is connected.

[0105] In summary, after using the audio signal adapter (audio cable or audio adapter) of the present invention to connect the audio signal sending device with the earphone slot as the interface and the audio signal receiving device with the USB slot as the interface, On the one hand, the audio signal conversion device sends audio signals to the audio signal receiving device through the D+ and D- pins of its USB interface end, and provides powe...

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Abstract

An audio signal receiver, adapter device, and an audio signal transmission system. The audio signal adapter device is used for connecting to an audio signal transmitter device and to the audio signal receiver device, and for transmitting a signal between the audio signal transmitter device and the audio signal receiver device. The audio signal adapter device comprises: a speaker port comprising an audio signal pin, a GND pin, and a MIC pin; and an adapter-end port comprising an audio signal pin, a reference signal pin, and a ground pin. The audio signal pin of the adapter-end port and the audio signal pin of the speaker port are connected, while the reference signal pin of the adapter-end port and the GND pin of the speaker port are connected for use in transmitting to the audio signal receiver device an audio signal outputted by the audio signal transmitter device. The MIC pin of the speaker port and the ground pin of the adapter-end port are connected, while the MIC pin and the GND pin of the speaker port are used in transmitting to the audio signal transmitter device a signal outputted by the audio signal receiver device.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an audio signal receiving device, an audio signal switching device and an audio signal transmission system. Background technique [0002] With the development of audio signal encoding / decoding technology, more and more electronic devices transmit data through audio interface. For example, the electronic device may be connected to the mobile communication device through a low-impedance voice coil speaker interface (eg, earphone jack) of the mobile communication device (eg, a mobile phone), and receive audio signals output by the mobile communication device. [0003] Since the output power of the low-impedance voice coil speaker interface is very small, except for electronic devices with low power consumption (such as headphones), electronic devices that receive audio signals through the low-impedance voice coil speaker interface usually need to use an external power supply or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/16
CPCH04R5/04H04R3/00H04R1/06H04R2420/09H04R2420/03H04R2201/107
Inventor 李东声
Owner TENDYRON CORP