A device and method for transmitting data based on an audio port
A data and audio technology, which is applied in the field of data transmission devices based on the audio port, can solve the problems of inconvenience and poor compatibility, and achieve the effect of preventing dirt and improving efficiency
Inactive Publication Date: 2017-02-22
深圳市空中秀科技有限公司
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Problems solved by technology
[0002] In the prior art, many manufacturers have provided technical solutions for data transmission through the audio port, but most of these technical solutions can only be used for certain types of mobile phones
Since the manufacturers of each mobile phone have different requirements for the audio port, the transmitted audio signal waveform will have different changes, resulting in poor compatibility. It still needs to be adjusted through software and other methods, so that after purchasing the product, consumers still need to pay attention to it. It is very inconvenient to make corresponding adjustments
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[0050] In order to fully understand the technical content of the present invention, the technical solutions of the present invention will be further introduced and illustrated below in conjunction with specific examples, but not limited thereto.
[0051] like Figure 1 to Figure 7 As shown, the present invention is a device for transmitting data based on the audio port, including an audio plug 10, and a microcontroller 20 connected to the audio plug 10; 11 and shaping amplifier circuit 12; microcontroller 20 is also connected with power supply circuit 21, control button 22 and transmitting circuit 23. The microcontroller 20 is also connected with an indicator light 24 . Detection resistors R1 and R2 are also connected in series between the audio plug 10 and the voltage doubler circuit 11 (for providing a detection signal to the mobile phone when the audio plug is inserted into the audio port). For the three pins of the audio plug, pin a is the ground terminal, pin b is conne...
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The invention discloses a device and a method for transmitting data on the basis of an audio port. The device for transmitting the data on the basis of the audio port comprises an audio plug, a microcontroller, a voltage doubling circuit and a shaping and amplifying circuit, wherein the microcontroller is connected with the audio plug; the voltage doubling circuit and the shaping and amplifying circuit are connected between the audio plug and the microcontroller; and the microcontroller is connected with a power circuit, a control button and a transmitting circuit. The device is provided with a detecting resistor which is serially connected with the audio plug, and when the audio plug is plugged in different mobile phones, the mobile phones can be recognized correctly; by the voltage doubling circuit, the different mobile phones can be recognized when forward and reverse connection modes of left sound tracks and right sound tracks are different; the problems that different amplitude values are outputted from audios of the different mobile phones and audio signals of the different mobile phones fade in and fade out can be solved by a time width coding scheme; and a left sound track and a right sound track of a mobile phone can simultaneously transmit audio data, amplitudes are equal to one another, phases are opposite to one another, and the data transmission efficiency is improved.
Description
technical field [0001] The present invention relates to a data transmission device, more specifically to a device and method for transmitting data based on an audio port. Background technique [0002] In the prior art, many manufacturers have provided technical solutions for data transmission through audio ports, but most of these technical solutions can only be used for certain types of mobile phones. Since the manufacturers of each mobile phone have different requirements for the audio port, the transmitted audio signal waveform will have different changes, resulting in poor compatibility. It still needs to be adjusted through software and other methods, so that after purchasing the product, consumers still need to pay attention to it. It is very inconvenient to make corresponding adjustments. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to overcome the defects of the prior art and provide a device and method for transmitting data based on t...
Claims
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IPC IPC(8): H04M1/725
Inventor 刘曙生
Owner 深圳市空中秀科技有限公司