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Audio signal receiving and transferring device

An audio signal and switching device technology, applied in the electronic field, can solve the problems of low output power of the low-impedance voice coil speaker interface, increase the volume of the electronic device, increase the cost of the electronic device, etc., and achieve low hardware cost and reduced volume , cost reduction effect

Active Publication Date: 2013-11-27
TENDYRON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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 a built-in Only the battery can work normally, which increases the cost of the electronic device and increases the volume of the electronic device

Method used

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  • Audio signal receiving and transferring device
  • Audio signal receiving and transferring device
  • Audio signal receiving and transferring device

Examples

Experimental program
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Effect test

no. 1 example

[0088] figure 1 It is a schematic structural diagram of the first embodiment of the audio signal switching device of the present invention; figure 1 As shown, the audio signal conversion device includes: speaker interface, booster unit (such as figure 1 shown step-up transformer), rectifier unit, filter unit, USB output interface (such as figure 1 USB plug shown); where:

[0089] The speaker interface is used for connecting with an audio signal sending device (for example, a mobile phone), receiving an audio signal output by the audio signal sending device, and outputting a signal to the audio signal sending device.

[0090] The above-mentioned speaker interface can be a low-impedance voice coil speaker interface (for example, a headphone interface), which includes: audio signal input pins (such as figure 1 AUDIO pin shown), Mic pin (as figure 1 MIC pin shown), ground pin (as figure 1 GND pin shown).

[0091] The audio signal input pin of the speaker interface is connect...

no. 2 example

[0128] image 3 It is a schematic structural diagram of the second embodiment of the audio signal switching device of the present invention; image 3 As shown, the difference between the second embodiment of the audio signal switching device and the first embodiment is:

[0129] In the second embodiment of the audio signal conversion device, the audio signal output pin (D+ pin) is connected to any output pin of the output end of the step-up transformer for outputting the audio signal to the USB device connected thereto.

[0130] The second embodiment of the audio signal receiving device is the same as the first embodiment.

no. 3 example

[0132] Figure 4 It is a schematic structural diagram of the third embodiment of the audio signal switching device of the present invention; Figure 4 As shown, the difference between the third embodiment of the audio signal switching device and the first embodiment is:

[0133] In the third embodiment of the audio signal conversion device, only one output pin in the secondary coil of the step-up transformer is connected with the input pin of the rectification unit, so the rectification unit only needs to include one input pin, and only one input pin is needed in the rectification unit. A diode is included.

[0134] Obviously, compared with the first embodiment, this embodiment will lose half of the electric energy of the secondary coil of the step-up transformer, but the circuit structure can be simplified and the hardware cost can be reduced.

[0135] In this embodiment, another output pin of the secondary coil of the step-up transformer is grounded, and the step-up transf...

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Abstract

An audio signal transferring device includes an input interface and a USB (Universal Serial Bus) output interface; the device also includes: a boosting unit, a rectifying unit, and a filtering unit; in which, the input interface comprises a first audio signal input pin, which is used for receiving an audio signal sent by an audio signal transmit device connected with the pin, and outputting the audio signal to an input end of the boosting unit; the boosting unit is used for boosting the audio signal input from its input end, and outputting the boosted audio signal through its output end to an input end of the rectifying unit; the rectifying unit is used for rectifying the boosted audio signal input from its output end, and outputting the level obtained from the rectify through its output end to an input end of the filtering unit; and the filtering unit is used for filtering the level input from its input end, and outputting the direct current level obtained from the filtration through its output end to a VBUS (Voltage Bus) pin of the USB output interface.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an audio signal receiving device and an audio signal switching device. Background technique [0002] With the development of audio signal encoding / decoding technology, more and more electronic devices transmit data through audio interfaces. 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 a built-in Only the battery can wor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R31/06H01R13/66H01R13/719H04R3/00
CPCH03F2203/45594H03F2203/45528H03F2203/45544H03F2203/45604H03F3/45475H03F3/187H03F3/181H04R5/04H04R2420/09
Inventor 李东声
Owner TENDYRON CORP
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