Method for performing communication between mobile phone and equipment by using audio interface
An audio interface and mobile phone technology, which is applied in the field of communication between mobile phones and devices, can solve problems such as inconvenient use and inability to view data in time, and achieve the effects of convenient use, strong practicability, and reduced production and use costs
Inactive Publication Date: 2014-07-02
WUHAN UNIV
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Problems solved by technology
It will cause inconvenience in use, and data in certain formats cannot be viewed in time
Method used
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[0034] As shown in the drawings, the invention includes a mobile phone, a two-way audio connection line, a conversion module and equipment. The mobile phone contains an audio interface (microphone and earphone), which is connected to the conversion module of the device through a cable for signal interaction; inside the mobile phone, the encrypted digital signal is first packaged, plus a header, and then the packaged digital signal is encoded Converted into a digital audio signal, and finally converted by DA to convert the digital audio signal into an analog audio signal, the encoding process from the digital signal to the digital audio signal is realized by an appropriate algorithm, so that the attenuation of the converted audio signal during transmission The previous digital signal will not be lost (for example, redundant coding is used, and more redundancy is used for the high-frequency and low-frequency target codes); the outgoing analog audio signal is transmitted to the eq...
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The invention relates to a method for performing communication between a mobile phone and equipment by using an audio interface, comprising the mobile phone, a two-way audio connecting line, a transformation module and the equipment; an encrypted digital signal is firstly packaged in the mobile phone and then is added with packet header; after being coded, the packaged digital signal is transformed into a digital audio signal; finally, the digital audio signal is transformed into an analog audio signal by DA (Digital-Analog) transformation; the delivered analog audio signal is transmitted to an equipment transformation module through the connecting line; the module is connected with the equipment; the transformation module also comprises the audio interface; after receiving the audio signal, the module processes the received signal through a control function in the module; the obtained analog audio signal is transformed into the digital audio signal by AD (Analog-Digital) transformation and then decoded into the digital signal; and after being unpacked, the obtained digital signal is supplied to the equipment. The method provided by the invention does not affect the traditional audio function, has low cost and is convenient to carry and use.
Description
technical field [0001] The invention relates to a method for communicating between a mobile phone and a device, in particular to a method for using an audio interface to communicate between the mobile phone and the device. Background technique [0002] With the rapid development of communication technology and Internet technology, mobile phones have gradually become instant, interactive and popular from a single mobile communication terminal. As a new medium, the mobile phone is changing the traditional way of information dissemination with its unique media characteristics, and it is becoming more and more popular among the people. The configuration and appearance of mobile phones are also gradually refined and refined. The general mobile phone has only one USB interface at most, or even no USB interface or no data cable. When there is no USB interface or the USB interface is occupied or there is no data cable at this time, it is inconvenient to realize the transmission of ...
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IPC IPC(8): H04B3/00H04L9/00
Inventor 胡继承魏小凤丁芳方栋健黄威
Owner WUHAN UNIV