Audio signal transfer device

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

Active Publication Date: 2012-02-15
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 l

Method used

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  • Audio signal transfer device
  • Audio signal transfer device
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Example

[0047] First embodiment

[0048] figure 1 It is a schematic diagram of the structure of the first embodiment of the audio signal switching device of the present invention; figure 1 As shown, the audio signal switching device includes: a speaker interface, a boost unit (such as figure 1 Step-up transformer shown), rectifier unit, filter unit, power output pin (such as figure 1 The VCC pin shown), the audio signal output pin; where:

[0049] The speaker interface is used to connect with an audio signal sending device (for example, a mobile phone) to receive the audio signal output by the audio signal sending device.

[0050] The aforementioned speaker interface may 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), ground pin (such as figure 1 GND pin shown).

[0051] In addition, the speaker interface may also include a microphone (MIC) pin, which is used to output signals to ...

Example

[0066] Second embodiment

[0067] figure 2 It is a schematic structural diagram of the second embodiment of the audio signal switching device of the present invention; figure 2 As shown, the difference between the second embodiment of the present invention and the first embodiment is:

[0068] The audio signal output pin is connected to the audio signal input pin of the speaker interface.

[0069] Optionally, a signal amplifier may be included between the audio signal output pin and the audio signal input pin of the speaker interface, that is, the input end of the signal amplifier is connected to the audio signal input pin, and the output end of the signal amplifier is used as the audio signal output lead. Pin (or connected to the audio signal output pin) to output the amplified audio signal.

Example

[0070] The third embodiment

[0071] image 3 It is a schematic diagram of the structure of the third embodiment of the audio signal switching device of the present invention; image 3 As shown, the difference between the third embodiment of the present invention and the first embodiment is:

[0072] In the third embodiment of the present invention, only one output pin in the secondary coil of the step-up transformer is connected to the input pin of the rectifier unit, so the rectifier unit only needs to include one input pin, and the rectifier unit only needs to include one diode. can.

[0073] Obviously, compared with the first embodiment, using this embodiment will lose half of the power of the secondary coil of the step-up transformer, but can simplify the circuit structure and reduce the hardware cost.

[0074] In this embodiment, the other output pin in the secondary coil of the step-up transformer is grounded, and the step-up transformer does not include a tap.

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Abstract

The invention relates to an audio signal transfer device. The audio signal transfer device comprises an input port, an output port, a booster unit, a rectification unit and a filter unit, wherein the input port comprises a first audio signal input pin, which is used for receiving the audio signals transmitted by an audio signal-transmitting device and outputting the audio signals to the input endof the booster unit, the booster unit is used for boosting the audio signals inputted by the input end of the booster unit and outputting the boosted audio signals to the input end of the rectification unit via the output end of the booster unit, the rectification unit is used for rectifying the boosted audio signals inputted by the input end of the rectification unit and outputting the rectifiedlevel to the input end of the filter unit via the output end of the rectification unit, and the filter unit is used for filtering the level inputted by the input end of the filter unit and outputtingthe filtered direct-current level to the power output pin of the output port via the output end of the filter unit.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to 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 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 a built-in Only batteries can work normally, which increases the cost of ...

Claims

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Application Information

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IPC IPC(8): H01R31/06H01R13/66H01R13/719
CPCH04R5/033H04R5/04H04R2499/11H04R3/12
Inventor 李东声
Owner TENDYRON CORP
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