CN102832968A - Method for performing communication between mobile phone and equipment by using audio interface - Google Patents
Method for performing communication between mobile phone and equipment by using audio interface Download PDFInfo
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- CN102832968A CN102832968A CN2012102624496A CN201210262449A CN102832968A CN 102832968 A CN102832968 A CN 102832968A CN 2012102624496 A CN2012102624496 A CN 2012102624496A CN 201210262449 A CN201210262449 A CN 201210262449A CN 102832968 A CN102832968 A CN 102832968A
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Abstract
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
The present invention relates to carry out between a kind of mobile phone and the equipment method of communication, especially relate to a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication.
Background technology
Along with the fast development of mechanics of communication and Internet technology, mobile phone is from single communication terminal just-in-time, interactive, popular progressively.Mobile phone is changing traditional information propagation pattern as a kind of emerging media with its exclusive media speciality, just day by day is rooted in the hearts of the people.The configuration of mobile phone and outward appearance also progressively refining and exquisite, and general mobile phone USB interface at most only is furnished with one or even do not have USB interface or be unworthy of data wire.When not having USB interface or USB interface occupied or this moment when not having data wire, realize that the transmission of file just seems inconvenient, the method that therefore needs a kind of USB interface to substitute realizes the communication of mobile phone and other equipment.Certainly, this means of communication can realize through USB interface too.Mobile phone generally contains COBBAIF, between analog and digital signal, has played function served as bridge, can the transmitted in both directions analog signal.
Present existing Bluetooth function can be realized the information interaction between mobile phone and the particular device (mobile phone, computer), but its limitation is also arranged.During through the Bluetooth transmission file to as if with the mobile phone or the computer of the specific pairing of this mobile phone, and the distance between them at ten meters with interior and guarantee to receive the interference of other signals.Can cause the inconvenience in the use, the data of some form can not in time be checked equally.
Summary of the invention
The present invention solves the existing in prior technology technical problem; Provide a kind of need be in mobile phone or equipment built-in conversion chip, reduced a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication of production and use cost.
It is to solve the existing in prior technology technical problem that the present invention also has a purpose; A kind of communication tool mobile phone of employing is provided; Be easy to carry, also do not cause the burden on the expense, be easy to use simultaneously; Need not seek specific object and decipher pairing, practical a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication.
Above-mentioned technical problem of the present invention mainly is able to solve through following technical proposals:
A kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication is characterized in that, comprises following selection step:
Select step 1, the user is passed to the communication step of equipment with cellphone information, specifically comprises:
Step 1.1 is used the COBBAIF of two way audio connecting line with handset audio interface and modular converter
Link to each other, in the selected mobile phone the information that will transmit, convert corresponding analog audio data to through DA again after the digital signal encoding after will encrypting and pack and add packet header in mobile phone inside becomes digital audio and video signals and send modular converter to through connecting line;
Step 1.2 is connected to equipment with modular converter, discerns through the controlled function in this modular converter
The header packet information of signal judges whether the affected further conversion process of the simulated audio signal that receives, if do not need, changes step 1.4;
Step 1.3, modular converter converts the simulated audio signal that obtains to digital audio and video signals through AD, is converted into digital signal through decoding again;
Step 1.4, modular converter sends final signal to coupled equipment;
Select step 2, the user is passed to the communication step of mobile phone with the information of equipment, specifically comprises:
Step 2.1; Use the two way audio connecting line that the handset audio interface is linked to each other with the COBBAIF of modular converter; In the selected equipment the information that will transmit, convert corresponding analog audio data to through DA again after the digital signal encoding after device interior will be encrypted and pack and add packet header becomes digital audio and video signals and send modular converter to through connecting line;
Step 2.2 is connected to mobile phone with modular converter, and the header packet information through the controlled function identification signal in this modular converter judges whether the affected further conversion process of the simulated audio signal that receives, if do not need, changes step 2.4;
Step 2.3, modular converter converts the simulated audio signal that obtains to digital audio and video signals through AD, is converted into digital signal through decoding again;
Step 2.4, modular converter sends final signal to coupled mobile phone.
In above-mentioned a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication, the modular converter in described selection step 1 or the selection step 2 is the A/D modular converter
In above-mentioned a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication; In described step 1.2 or the step 2.2; Said modular converter modular converter comprises coding/decoding modular converter and the control module that is connected with the coding/decoding modular converter; It is following that said control module is used for the concrete grammar of header packet information of identification signal: definition does not appear at the algorithm of character string of audio signal as packet header; Whether control module has this specific packet header to discern this signal through detecting the signal that is spread out of, and the conventional audio signal does not have packet header; Signal meets non-traditional audio signal when the detected packet header of control module, just need carry out coding/decoding and A/D conversion to it, otherwise control module directly reaches equipment or mobile phone with it, does not do conversion process.
In above-mentioned a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication; It is characterized in that: described header packet information comprises two kinds; Its effect is in order to seek the starting point of carrying out digital data transmission faster, if there is not this header packet information then to regard as the conventional audio signal; The then similar traditional packet header of another kind; Comprise ID; Control information (as every section audio size, parity check, whether retransmit, whether terminate the transmission etc.); Its effect is in order to guarantee the reliability of digital data transmission, and for example the length of signal is certain between packet header, then is not correct signal if be less than this length.These two kinds is initial signal packet header and medium content packet header, definition:
Initial signal packet header: control module is through the starting point of initial signal packet header detection digital data transmission, and medium content packet header: comprise ID, control information, control information comprise every section audio size, strange
Even parity check, whether retransmit, whether terminate the transmission etc.
It should be noted that; In described step 1.1 or the step 2.1; Encoding and decoding conversion between described digital signal and the digital audio and video signals is to be realized by suitable algorithm, and the decay of audio signal in transmittance process after the feasible conversion is unlikely loses previous digital signal generation.When we will convert general digital document F to digital audio and video signals W and transmit, must satisfy 4 requirements: 1. can recover F fully from W; 2. the frequency range of W is in one as far as possible and is not easy by the zone of environmental interference; 3. W is not easy by noise jamming, thereby reduces the probability that retransmits; 4. the coding size of W is as far as possible little in statistical significance, so that quick transmission.The process of this coding is following: 1. couple F carries out conversion (can be common signal transformations such as FFT, small echo), makes it to be transformed into sequence Ti; 2. Ti is carried out the FM conversion and make it to become Wi, final W is the summation of these Wi.Decode procedure then is the inverse process of said process, and what its conversion was used is corresponding inverse transformation.
In above-mentioned a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication, described two way audio connecting line comprises a kind of data wire that can connect mobile phone COBBAIF or USB interface and equipment interface, and what this connecting line transmitted is analog signal.When the mode that other transmission signals is arranged between transmission side and the recipient (like microphone and loudspeaker), this connecting line can be economized, and promptly through the air transfer audio signal, the loudspeaker of mobile phone end send audio signal, the microphone end received audio signal of equipment.
In above-mentioned a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication, described equipment comprises a kind of or its combination in any in smart mobile phone, computer, printer, the projecting apparatus.
Therefore, the present invention has following advantage: 1. need be in mobile phone or equipment built-in conversion chip, reduced production and use cost; 2. the communication tool mobile phone that adopts is easy to carry, and does not also cause the burden on the expense, is easy to use simultaneously, need not seek specific object and decipher pairing, and is practical.
Description of drawings
Fig. 1 is that system configuration of the present invention connects sketch map.
Fig. 2 is a method flow diagram of the present invention.
Fig. 3 is the flow chart that information flow conversion of the present invention is handled.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically technical scheme of the present invention.
Embodiment:
Shown in accompanying drawing, the present invention includes mobile phone, two way audio connecting line, modular converter and equipment.Mobile phone contains COBBAIF (microphone and earphone), and the modular converter that is connected to equipment through connecting line carries out signal with it mutual; Inner at mobile phone; Earlier with the digital signal packing of encrypting; Add packet header; The good digital signal of behind coding, will packing again converts digital audio and video signals to, converts digital audio and video signals to simulated audio signal by the DA conversion at last, and the cataloged procedure from the digital signal to the digital audio and video signals is to be realized by suitable algorithm; Make unlikely previous digital signal is produced of the decay of audio signal in transmittance process after the conversion lose (for example adopting redundancy encoding, more redundant) to the object code employing of high and low frequency part; The simulated audio signal that spreads out of is transferred to the device translates module through connecting line, and this module is connected to equipment; Modular converter also contains COBBAIF; After receiving audio signal; This module is handled through the controlled function in the module to the received signal, judges the classification (being other signals that need change or traditional audio signal) of signal according to the header packet information of signal; In the time of need changing, modular converter converts the simulated audio signal that obtains to digital audio and video signals through AD, is decoded as digital signal again, offers equipment after the digital signal that obtains is unpacked.Use above-mentioned processing procedure conversely, can realize that also equipment end transmission data are to mobile phone end.Equipment is projecting apparatus in the present embodiment, and the handset audio interface links to each other with the COBBAIF of modular converter through connecting line, and modular converter links to each other with projecting apparatus; After the data that obtain transmitting from mobile phone,,, obtain corresponding data and just can be shown in projecting apparatus so its information that receives needs modular converter carry out conversion process to it because projecting apparatus does not have COBBAIF to record to the data that receive.
Be example to realize between mobile phone and projecting apparatus that image file is sent to projecting apparatus below, introduce the information interaction of utilizing COBBAIF how to realize mobile phone and projecting apparatus,
Specifically may further comprise the steps:
Step (1). mobile phone is connected to modular converter through the two way audio connecting line from COBBAIF
COBBAIF; Selected the image file that will be sent to projecting apparatus; This document is stored in mobile phone EMS memory through encrypting the back with the digital signal form of packing; The software inner by mobile phone has been encoded into digital audio and video signals with it, is converted into simulated audio signal by digital DA again, sends to modular converter through COBBAIF.Step (2). modular converter is connected to projecting apparatus, and modular converter receives the simulated audio signal that transmits, and the header packet information through the controlled function identification signal judges whether and need change it.Because concrete equipment is projecting apparatus, this equipment does not use traditional sound-recording function, need change the signal that obtains.Step (3). modular converter converts the simulated audio signal that obtains to digital audio and video signals through AD, is converted into digital signal through decoding again, offers projecting apparatus, to make subsequent analysis (as view and admire picture or analyze medical image).
Wherein a kind of embodiment of encoding and decoding (can be analogized more complicated mode) as follows in the step (1):
1) to the simple windowing conversion of F (rectangular window, length are 2), if represent stop bits with E, we get
Totally 7 kinds of the digital fragment Ti that arrives---00,01,10,11,0E, 1E and E;
2) with three kinds of frequencies Ti is modulated into Wi, the frequency of employing is 200Hz, 300Hz and 500Hz, tool
The body modulator approach is following: 200Hz representes 00, and 300Hz representes 01, and 500Hz representes E, and 200Hz+300Hz representes 10, and 200Hz+500Hz representes 0E, and 300Hz+500Hz representes 1E, and 200Hz+300Hz+500Hz representes 11.
The audio signal frequency scope of above-mentioned coding result is positioned at 200Hz to 3000Hz, the very suitable audio transmission of carrying out.If in conjunction with the definition in packet header, then can save the stop bits E of above-mentioned coding, make code efficiency higher.Decode procedure is a simple inverse process of said process.
What should stress is, this coded system only is a kind of in those skilled in the art's many coded systems that can adopt, does not get rid of and can adopt other coded system to carry out the coding of information.
We adopt in the step (2) add the packet header signal and detect a kind of embodiment of packet header signal following: be divided into two kinds: 1. for the definition in packet header of non-traditional audio signal; Be before the digital signal bag, to add 2K mute signal 0, every segment signal is that 2K 0 signal value adds characteristic value.When control module began detection signal, first ran into non-0 signal, and explanation is traditional audio frequency, did not do conversion and directly delivered to equipment; If first runs into 0 signal, then might be us carries out the starting point of transmission signals with non-traditional mode, continues to detect K or more than K signal backward, as if being 0 all, then this signal be we the non-traditional audio signal that will transmit; 2. for the packet header of the signal that is in non-traditional transmission means, we comprise ID to its definition of carrying out similar traditional packet header; Control information (as every section audio size, parity check bit, whether retransmit, whether terminate the transmission etc.), according to this header packet information, learn the every section size of signal in the transmission; Form an interruption; Continue to detect packet header backward, in the control information in packet header, contain termination transmission information (like very long one section quiet fragment), then stop transmission.This method need not detect all signals, but jumping characteristic detects, and has realized the target of fast detecting.
Above step be introduce from the message transmitting procedure of mobile phone to equipment, the present invention also can realize the message transmitting procedure of slave unit to mobile phone, i.e. the inverse process of above-mentioned steps, step is consistent, is not just giving unnecessary details at this.
After adopting this method, 1. need be in mobile phone or equipment built-in conversion chip, reduced production and use cost; And mobile phone is popular communication tool, and staff is indispensable basically, and each mobile phone all carries COBBAIF, is more convenient for promoting this method.2. the communication tool mobile phone that adopts of this method; Be easy to carry, also do not cause the burden on the expense, be easy to use simultaneously; Do not need as bluetooth, to seek specific object and decipher pairing; Make crowd of all kinds in time to collect desired data and be stored in mobile phone, deliver to equipment needed thereby again, practical.3. the device translates module that adopts of this method; It is our innovation place; This module is made the usefulness of switching signal, comprises control module, discerns (being need change or traditional audio signal) to the received signal through this module; The new method of a kind of mobile phone and equipment room communication both was provided, had not influenced the traditional data transmission means again.4. this method is particularly suitable for the not enough user of handset port; When they need use a plurality of interfaces transmission files to certain equipment; The method of utilizing COBBAIF to carry out mobile phone and device talk just provides a new communication path, in use need not possess professional knowledge again simultaneously, makes that the use of mobile phone is more efficient; Be worth higher, wider towards the crowd.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (6)
1. a method of utilizing COBBAIF between mobile phone and equipment, to carry out communication is characterized in that, comprises following selection step:
Select step 1, the user is passed to the communication step of equipment with cellphone information, specifically comprises:
Step 1.1 is used the COBBAIF of two way audio connecting line with handset audio interface and modular converter
Link to each other, in the selected mobile phone the information that will transmit, convert corresponding analog audio data to through DA again after the digital signal encoding after will encrypting and pack and add packet header in mobile phone inside becomes digital audio and video signals and send modular converter to through connecting line;
Step 1.2 is connected to equipment with modular converter, discerns through the controlled function in this modular converter
The header packet information of signal judges whether the affected further conversion process of the simulated audio signal that receives, if do not need, changes step 1.4;
Step 1.3, modular converter converts the simulated audio signal that obtains to digital sound through AD
Frequently signal is converted into digital signal through decoding again;
Step 1.4, modular converter sends final signal to coupled equipment;
Select step 2, the user is passed to the communication step of mobile phone with the information of equipment, specifically comprises:
Step 2.1; Use the two way audio connecting line that the handset audio interface is linked to each other with the COBBAIF of modular converter; In the selected equipment the information that will transmit, convert corresponding analog audio data to through DA again after the digital signal encoding after device interior will be encrypted and pack and add packet header becomes digital audio and video signals and send modular converter to through connecting line;
Step 2.2 is connected to mobile phone with modular converter, and the header packet information through the controlled function identification signal in this modular converter judges whether the affected further conversion process of the simulated audio signal that receives, if do not need, changes step 2.4;
Step 2.3, modular converter converts the simulated audio signal that obtains to digital audio and video signals through AD, is converted into digital signal through decoding again;
Step 2.4, modular converter sends final signal to coupled mobile phone.
2. a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication according to claim 1 is characterized in that, the modular converter in described selection step 1 or the selection step 2 is the A/D modular converter.
3. a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication according to claim 1; It is characterized in that; In described step 1.2 or the step 2.2; It is following that said control module is used for the concrete grammar of header packet information of identification signal: definition does not appear at the algorithm of character string of audio signal as packet header, and whether control module has this specific packet header to discern this signal through detecting the signal that is spread out of, and the conventional audio signal does not have packet header; Signal meets non-traditional audio signal when the detected packet header of control module, just need carry out coding/decoding and A/D conversion to it, otherwise control module directly reaches equipment or mobile phone with it, does not do conversion process.
4. a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication according to claim 3, it is characterized in that: described header packet information comprises two kinds of header packet informations, i.e. initial signal packet header and medium content packet header, definition:
Initial signal packet header: control module is through the starting point of initial signal packet header detection digital data transmission, medium content packet header: comprise ID, control information.
5. a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication according to claim 1; It is characterized in that; Described two way audio connecting line comprises a kind of data wire that can connect mobile phone COBBAIF or USB interface and equipment interface, and what this connecting line transmitted is analog signal.
6. a kind of method of utilizing COBBAIF between mobile phone and equipment, to carry out communication according to claim 1 is characterized in that described equipment comprises a kind of or its combination in any in smart mobile phone, computer, printer, the projecting apparatus.
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| CN103200006A (en) * | 2013-02-18 | 2013-07-10 | 飞天诚信科技股份有限公司 | Communication method and communication device between terminal and external equipment |
| CN103473023A (en) * | 2013-09-17 | 2013-12-25 | 广州宽度信息技术有限公司 | Printing method and printing system transmitting data by using analog signals |
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| CN111192596A (en) * | 2020-03-10 | 2020-05-22 | 香港科技大学深圳研究院 | Transmission system using audio as digital signal coding and decoding and transmission method thereof |
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| CN105653237A (en) * | 2016-02-01 | 2016-06-08 | 宇龙计算机通信科技(深圳)有限公司 | Audio playing control method and system and terminal |
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| CN111192596A (en) * | 2020-03-10 | 2020-05-22 | 香港科技大学深圳研究院 | Transmission system using audio as digital signal coding and decoding and transmission method thereof |
| CN112954673A (en) * | 2021-02-03 | 2021-06-11 | 深圳市长丰影像器材有限公司 | Encryption method for wireless microphone channel |
| CN112954673B (en) * | 2021-02-03 | 2023-08-01 | 深圳市长丰影像器材有限公司 | Encryption method for wireless microphone channel |
| CN114004246A (en) * | 2021-12-06 | 2022-02-01 | 上海中通吉网络技术有限公司 | Mobile terminal equipment provided with portable bar code recognizer |
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