Transmission method, mobile terminal, multi-channel headset, and audio play system

  • US 9,788,096 B2
  • Filed: 04/21/2015
  • Issued: 10/10/2017
  • Est. Priority Date: 04/29/2014
  • Status: Active Grant
First Claim
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1. A mobile terminal, comprising:

  • a processor;

    a first switching circuit coupled to the processor;

    a digital-to-analog converter coupled to the processor and the first switching circuit; and

    a headset interface coupled to the first switching circuit,wherein the first switching circuit is connected to the headset interface,wherein the processor is configured to;

    decode an audio file to obtain an audio digital signal;

    determine a type of a headset connected to the headset interface;

    generate a first switching instruction according to the type of the headset; and

    transmit the first switching instruction to the first switching circuit,wherein the first switching instruction carries indication information used to instruct the first switching circuit to transmit the audio digital signal to the headset interface when the headset is a multi-channel headset,wherein the first switching instruction carries indication information used to instruct the first switching circuit to transmit an audio analog signal to the headset interface when the headset is not a multi-channel headset,wherein the digital-to-analog converter is configured to;

    receive the audio digital signal from the processor; and

    convert the audio digital signal into the audio analog signal,wherein the first switching circuit is configured to;

    receive the first switching instruction; and

    transmit the audio digital signal or the audio analog signal to the headset interface according to the first switching instruction,wherein the headset interface is configured to transmit the audio digital signal to the headset or transmit the audio analog signal to the headset,wherein the headset interface is a 3.5 millimeter (mm)/2.5 mm headset jack,wherein the headset jack comprises a left channel pin and a right channel pin,wherein the first switching circuit comprises an analog switch,wherein a power input pin of the analog switch is connected to a working voltage,wherein a ground pin of the analog switch is grounded,wherein a switching control pin of the analog switch is connected to a first signal output pin of the processor of the mobile terminal and is configured to receive the first switching instruction output by the processor,wherein an output end of a first data output pin of the analog switch is connected to the left channel pin of the headset interface of the mobile terminal,wherein an output end of a second data output pin of the analog switch is connected to the right channel pin of the headset interface of the mobile terminal,wherein the analog switch further comprises a first data input pin, a second data input pin, a third data input pin, and a fourth data input pin,wherein an input end of the first data input pin and an input end of the second data input pin are configured to receive the audio digital signal or an audio data packet,wherein input ends of the third data input pin and the fourth data input pin are configured to receive the audio analog signal,wherein an input end of the first data output pin and an input end of the second data output pin are respectively connected to an output end of the first data input pin and an output end of the second data input pin when an audio digital signal or the audio data packet needs to be output, andwherein the input end of the first data output pin and the input end of the second data output pin are respectively connected to an output end of the third data input pin and an output end of the fourth data input pin when an audio analog signal needs to be output.

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