CN105846911A - Data transmission method, device and system based on sound wave - Google Patents
Data transmission method, device and system based on sound wave Download PDFInfo
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- CN105846911A CN105846911A CN201610344019.7A CN201610344019A CN105846911A CN 105846911 A CN105846911 A CN 105846911A CN 201610344019 A CN201610344019 A CN 201610344019A CN 105846911 A CN105846911 A CN 105846911A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
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Abstract
The invention provides a data transmission method based on sound wave. The method comprises the following steps: to begin with, obtaining original data; then, enabling the original data to be encoded into 17.5 kHz-19.5 kHz audio signals according to a preset frequency mapping table; and finally, playing the audio signal to enable the audio signal to be sent to a receiving end in the form of a sound wave signal, and to be received, decided and processed by the receiving end. Compared with the prior art, the method sends near ultrasonic signals in the 17.5 kHz-19.5 kHz high frequency band, thereby reducing influence of environment noise on the sound wave to the maximum degree, and preventing signal distortion and data loss; and the method achieves an optimum balance effect among availability to most of intelligent mobile phones, environment noise processing and high and low near ultrasonic waves tolerable for ears, thereby ensuring reliability and safety of data transmission, transmission efficiency and hearing comfortableness.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of data transmission method based on sound wave, one based on sound wave
Data transmission device and a kind of data transmission system based on sound wave.
Background technology
Sound wave is used as short range data transmission three big advantages, especially in the case of smart mobile phone is universal.First
Being that its suitability is good, on market, the smart mobile phone of nearly 100% all supports that sound wave is received and dispatched, in contrast, bluetooth, infrared,
The popularity rates such as NFC (Near Field Communication, near field wireless telecommunications) are relatively low, and such as NFC only has portion at present
Divide high-end handsets support；Second is that it is applied not by equipment vendors' control, and the software business man that can leave develops corresponding software；The
Three is that it need not associate pairing before doing short range data transmission, otherwise, such as bluetooth and WIFI etc., carrying out data biography
Need before defeated that the mobile phone of both sides is associated pairing thus add use complexity, sacrifice convenience.
Based on above-mentioned advantage, sound wave can transmit the feature of data and be started and be applied to the field such as mobile payment, door lock gate inhibition.
But using sound wave is also vulnerable as short range data transmission, is especially easily affected by environmental noise and caused data
Distortion or loss.
Accordingly, it is desirable to provide a kind of data transmission method based on sound wave that can apply in a noisy environment.
Summary of the invention
For defect of the prior art, the present invention provides a kind of number based on sound wave that can apply in a noisy environment
According to transmission method, a kind of data transmission device based on sound wave and a kind of data transmission system based on sound wave.
First aspect, a kind of based on sound wave the data transmission method that the present invention provides, for transmitting terminal, including:
Obtain initial data；
Described initial data is encoded to according to default frequency map the audio signal of 17.5kHz-19.5kHz；
Play described audio signal, thus described audio signal is sent to receiving terminal with the form of acoustic signals.
Optionally, the described audio signal of described broadcasting, thus described audio signal is sent to connecing with the form of acoustic signals
Receiving end, including:
According to default number of times continuously, repeat playing described audio signal, thus by described audio signal with acoustic signals
Form sends to receiving terminal.
Optionally, after described acquisition initial data, also include:
Current time is used as timestamp, described initial data to be encrypted, it is thus achieved that encryption data；Wherein, described work as
The front time is to obtain from the real-time clock that described transmitting terminal is built-in, and described transmitting terminal periodically connects the Internet time service server
Described real-time clock is calibrated；
The described audio signal that described initial data is encoded to according to default frequency map 17.5kHz-19.5kHz,
Including:
Described encryption data is encoded to according to default frequency map the audio signal of 17.5kHz-19.5kHz.
Second aspect, a kind of based on sound wave the data transmission device that the present invention provides, for transmitting terminal, including:
Initial data acquisition module, is used for obtaining initial data；
Data coding module, for being encoded to described initial data according to default frequency map
17.5kHz-19.5kHz audio signal；
Sound wave sending module, is used for playing described audio signal, thus described audio signal is sent out with the form of acoustic signals
Deliver to receiving terminal.
Optionally, described data transmission device based on sound wave, also include:
Timestamp encrypting module, is used for using current time to be encrypted described initial data as timestamp, it is thus achieved that add
Ciphertext data；Wherein, described current time is to obtain from the real-time clock that described transmitting terminal is built-in, and described transmitting terminal is regular
Connect the Internet time service server described real-time clock is calibrated；
Described data coding module, including:
Encryption data coding unit, for being encoded to described encryption data according to default frequency map
17.5kHz-19.5kHz audio signal.
The third aspect, a kind of based on sound wave the data transmission method that the present invention provides, for receiving terminal, including:
Gather the acoustic signals of the 17.5kHz-19.5kHz that transmitting terminal is play, and described acoustic signals is converted into audio frequency letter
Number；
Fourier Transform Algorithm is used to be transferred described audio signal to frequency-region signal by time-domain signal；
According to default frequency map, the described audio signal being converted to frequency-region signal is decoded, it is thus achieved that described transmission
The initial data that end sends.
Optionally, described according to default frequency map, the described audio signal being converted to frequency-region signal is solved
Code, it is thus achieved that the initial data that described transmitting terminal sends, including:
According to default frequency map, the described audio signal being converted to frequency-region signal is decoded, it is thus achieved that transmitting terminal is sent out
The encryption data using timestamp to encrypt sent；
Using current time to be decrypted described encryption data as timestamp, successful decryption obtains described transmitting terminal and sends
To the initial data of described receiving terminal, wherein, described current time is to obtain from the real-time clock that described receiving terminal is built-in,
Described receiving terminal periodically connects the Internet time service server and calibrates described real-time clock or periodically use described sending out
Described real-time clock is calibrated by the timestamp carried in the described encryption data that sending end sends.
Fourth aspect, a kind of based on sound wave the data transmission device that the present invention provides, for receiving terminal, including:
Acoustic receiver module, for gathering the acoustic signals of the 17.5kHz-19.5kHz that transmitting terminal is play, and by described sound
Ripple signal is converted into audio signal；
Frequency domain modular converter, is used for using Fourier Transform Algorithm to be transferred described audio signal to frequency domain letter by time-domain signal
Number；
Sound wave decoder module, for carrying out the described audio signal being converted to frequency-region signal according to default frequency map
Decoding, it is thus achieved that the initial data that described transmitting terminal sends.
Optionally, described acoustic receiver module includes Mike and noise reduction chip able to programme, described Mike and described fall able to programme
Chip of making an uproar connects；
Described Mike is used for gathering the acoustic signals of the 17.5kHz-19.5kHz that transmitting terminal is play, and by described acoustic signals
It is converted into audio signal；
Described noise reduction chip able to programme is for carrying out noise reduction process to described audio signal.
5th aspect, a kind of based on sound wave the data transmission system that the present invention provides, including: send terminal and receive eventually
End；
The data transmission method based on sound wave for transmitting terminal that described transmission terminal provides according to the present invention after operation
After converting raw data into audio signal, to be sent to described reception terminal after the form of acoustic signals；
The data transmission method based on sound wave for receiving terminal that described reception terminal provides according to the present invention after operation
Receive the acoustic signals that described transmission terminal sends, and after described acoustic signals is changed, it is thus achieved that described transmission terminal
It is sent to the initial data of described reception terminal.
As shown from the above technical solution, a kind of based on sound wave the data transmission method that the present invention provides, for transmitting terminal,
First, initial data is obtained；Then, described initial data is encoded to according to default frequency map
17.5kHz-19.5kHz audio signal；Finally, play described audio signal, thus by described audio signal with sound wave
The form of signal sends to receiving terminal.Compared to prior art, the present invention has selected this high frequency of 17.5kHz-19.5kHz
Section send nearly ultrasonic signal, thus the overwhelming majority smart mobile phones can use, environmental noise process and human ear tolerable
Nearly ultrasound wave height between obtain optimum balance effect, it is ensured that data transmission reliability and safety, the effect of transmission
Rate and audition comfortableness.It is experimentally confirmed that by the sonic transmissions data of this frequency range of 17.5kHz-19.5kHz, phase
Compared with other frequency ranges, data transmission success is obviously improved.
Based on identical inventive concept, the present invention also provides for a kind of data transmission method based on sound wave, for receiving terminal,
First, gather the acoustic signals of the 17.5kHz-19.5kHz that transmitting terminal is play, and described acoustic signals is converted into audio frequency
Signal；Then, Fourier Transform Algorithm is used to be transferred described audio signal to frequency-region signal by time-domain signal；Finally, press
According to default frequency map, the described audio signal being converted to frequency-region signal is decoded, it is thus achieved that described transmitting terminal sends
Initial data.This method and the above-mentioned data transmission method based on sound wave for transmitting terminal belong to identical invention structure
Think, be all the acoustic signals transmission data having selected this high band of 17.5kHz-19.5kHz, there is identical useful effect
Really.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to concrete real
Execute the required accompanying drawing used in mode or description of the prior art to be briefly described.In all of the figs, similar element
Or part is typically by the reference mark being similar to.In accompanying drawing, each element or part might not be painted according to actual ratio
System.
Fig. 1 shows the flow chart of a kind of based on sound wave the data transmission method that first embodiment of the invention is provided；
Fig. 2 shows the schematic diagram of a kind of based on sound wave the data transmission device that second embodiment of the invention is provided；
Fig. 3 shows the flow chart of a kind of based on sound wave the data transmission method that third embodiment of the invention is provided；
Fig. 4 shows the schematic diagram of a kind of based on sound wave the data transmission device that fourth embodiment of the invention is provided.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of technical solution of the present invention is described in detail.Following example are only used for more
Add and clearly demonstrate technical scheme, be therefore intended only as example, and the protection of the present invention can not be limited with this
Scope.
It should be noted that except as otherwise noted, technical term used in this application or scientific terminology should be the present invention
The ordinary meaning that one of ordinary skill in the art are understood.
The problem easily affected by environmental noise in view of current sonic transmissions data, the application provides a kind of number based on sound wave
According to transmission method, a kind of data transmission device based on sound wave and a kind of data transmission system based on sound wave, on solving
State problem.
Below in conjunction with the accompanying drawings embodiments of the invention are illustrated.
Fig. 1 shows the flow chart of a kind of based on sound wave the data transmission method that first embodiment of the invention is provided.As
Shown in Fig. 1, a kind of based on sound wave the data transmission method that first embodiment of the invention provides comprises the following steps:
Step S101: obtain initial data.
Transmitting terminal in the embodiment of the present invention and receiving terminal, can be any to possess sound wave/digital signal translation function
Intelligent terminal, for example, it may be mobile phone, panel computer, personal digital assistant (Personal Digital Assistant,
PDA), desk computer, notebook computer, wearable intelligent terminal etc., it is all within protection scope of the present invention.
Described initial data is the data that transmitting terminal needs to be sent to receiving terminal, can be binary system, hexadecimal or character
Any one form such as code, the present invention is not specifically limited, and it is all within protection scope of the present invention.
Described initial data can be when user is inputted by input equipment such as touch screen, keyboard etc., sets from described input
Standby acquisition, it is also possible to reading from storage device, the present invention is not specifically limited, and it is all in the protection of the present invention
Within the scope of.
Step S102: described initial data is encoded to according to default frequency map the audio frequency of 17.5kHz-19.5kHz
Signal.
At described transmitting terminal, being previously provided with frequency map, described in described frequency map is data and sound wave frequency
The mapping relations of rate, wherein, frequency of sound wave is in the range of 17.5kHz-19.5kHz, the sound that different data correspondences is different
Wave frequency, such as, frequency corresponding for character a is 17500Hz, and frequency corresponding for character b is 17600Hz, etc.；
And for example, the frequency of 8 string of binary characters 01010101 correspondences is 18500Hz, etc.；Described frequency map is concrete
Can arrange flexibly with connected applications demand, the present invention is not specifically limited, and it is all within protection scope of the present invention.
Utilize described frequency map, described initial data coding can be become audio signal.
Step S103: play described audio signal, thus described audio signal is sent to receiving with the form of acoustic signals
End.
This step is in the specific implementation, it is possible to use broadcaster such as sound equipment, loudspeaker, buzzer etc. play described audio signal,
Thus described audio signal is sent to receiving terminal with the form of acoustic signals.
In order to ensure described acoustic signals transmission data reliability, the present invention provide an embodiment in, described in broadcast
Put described audio signal, thus described audio signal is sent to receiving terminal with the form of acoustic signals, including:
According to default number of times continuously, repeat playing described audio signal, thus by described audio signal with acoustic signals
Form sends to receiving terminal.
Such as, described audio signal is continuously repeated broadcasting three times, so just in case there being interference always to have one in transmitting procedure
Section acoustic signals receiving end receives.
Additionally, in order to ensure the ageing of described acoustic signals transmission data, it is to avoid described acoustic signals is recorded, is replicated
Rear illegal use, in the embodiment that the present invention provides, after described acquisition initial data, also includes:
Current time is used as timestamp, described initial data to be encrypted, it is thus achieved that encryption data；Wherein, described work as
The front time is to obtain from the real-time clock that described transmitting terminal is built-in, and described transmitting terminal periodically connects the Internet time service server
Described real-time clock is calibrated；
The described audio signal that described initial data is encoded to according to default frequency map 17.5kHz-19.5kHz,
Including:
Described encryption data is encoded to according to default frequency map the audio signal of 17.5kHz-19.5kHz.
By using timestamp to be encrypted, receiving terminal needs to use corresponding timestamp to be decrypted, if timestamp is consistent,
Then successful decryption, illustrates that data are effective, and then obtains described transmitting terminal and be sent to the initial data of described receiving terminal；
Otherwise explanation data are invalid.
So far, by step S101 to step S103, complete one that first embodiment of the invention provided based on sound
The flow process of the data transmission method of ripple.Compared to prior art, the present invention has selected this high frequency of 17.5kHz-19.5kHz
Section send nearly ultrasonic signal, thus the overwhelming majority smart mobile phones can use, environmental noise process and human ear tolerable
Nearly ultrasound wave height between obtain optimum balance effect, it is ensured that data transmission reliability and safety, the effect of transmission
Rate and audition comfortableness.It is experimentally confirmed that by the sonic transmissions data of this frequency range of 17.5kHz-19.5kHz, phase
Compared with other frequency ranges, data transmission success is obviously improved.
In above-mentioned first embodiment, it is provided that a kind of data transmission method based on sound wave, corresponding, this
Application also provides for a kind of data transmission device based on sound wave.Refer to Fig. 2, it provides for second embodiment of the invention
A kind of schematic diagram of data transmission device based on sound wave.Owing to device embodiment is substantially similar to embodiment of the method, so
Describing fairly simple, relevant part sees the part of embodiment of the method and illustrates.Device embodiment described below is only
It is only illustrative.
A kind of based on sound wave the data transmission device that second embodiment of the invention provides, including:
Initial data acquisition module 101, is used for obtaining initial data；
Data coding module 102, for being encoded to described initial data according to default frequency map
17.5kHz-19.5kHz audio signal；
Sound wave sending module 103, is used for playing described audio signal, thus by described audio signal with the shape of acoustic signals
Formula sends to receiving terminal.
Wherein, described sound wave sending module 103 includes broadcaster, described broadcaster by play described audio signal, from
And described audio signal is sent to receiving terminal with the form of acoustic signals.
In the embodiment that the present invention provides, described data transmission device based on sound wave, also include:
Timestamp encrypting module, is used for using current time to be encrypted described initial data as timestamp, it is thus achieved that add
Ciphertext data；Wherein, described current time is to obtain from the real-time clock that described transmitting terminal is built-in, and described transmitting terminal is regular
Connect the Internet time service server described real-time clock is calibrated；
Described data coding module 102, including:
Encryption data coding unit, for being encoded to described encryption data according to default frequency map
17.5kHz-19.5kHz audio signal.
Above, a kind of based on sound wave the data transmission device explanation provided for second embodiment of the invention.
A kind of based on sound wave the data transmission device that the present invention provides transmits for identical with above-mentioned data based on sound wave
Inventive concept, there is identical beneficial effect, here is omitted.
The present invention also provides for a kind of data transmission method based on sound wave, for receiving terminal, the method with above-mentioned for sending
End data transmission method based on sound wave with the use of, belong to identical inventive concept, therefore, related content can be joined
According to the explanation of above-mentioned first embodiment part, partial content repeats no more.
Refer to Fig. 3, the flow process of its a kind of based on sound wave data transmission method provided by third embodiment of the invention
Figure, a kind of based on sound wave the data transmission method that the 3rd embodiment provides comprises the following steps:
Step S201: gather the acoustic signals of the 17.5kHz-19.5kHz that transmitting terminal is play, and described acoustic signals is turned
Change audio signal into.
In the embodiment of the present invention, receiving terminal can gather, by Mike, the acoustic signals that transmitting terminal sends, and by described sound wave
Signal is converted into audio signal, then by editing the filtering filtering chip of making an uproar, filters out from described audio signal
17.5kHz-19.5kHz audio signal.
Step S202: use Fourier Transform Algorithm to be transferred described audio signal to frequency-region signal by time-domain signal.
In embodiments of the present invention, described audio signal is time-domain signal, for the ease of described audio signal is analyzed,
This step use Fourier Transform Algorithm transferred described audio signal to frequency-region signal by time-domain signal.Fourier transformation is calculated
Method is the algorithms most in use in signal conversion, and here is omitted.
Step S203: according to default frequency map, the described audio signal being converted to frequency-region signal is decoded, obtains
Obtain the initial data that described transmitting terminal sends.
In the present embodiment, also it is previously provided with frequency map at described receiving terminal, can be right according to described frequency map
Described audio signal is decoded, thus obtains the initial data that described transmitting terminal sends.
In order to ensure the ageing of described acoustic signals transmission data, it is to avoid described acoustic signals recorded, replicate after illegal
Use, the present invention provide an embodiment in, described according to default frequency map to being converted to frequency-region signal
Described audio signal is decoded, it is thus achieved that the initial data that described transmitting terminal sends, including:
According to default frequency map, the described audio signal being converted to frequency-region signal is decoded, it is thus achieved that transmitting terminal is sent out
The encryption data using timestamp to encrypt sent；
Using current time to be decrypted described encryption data as timestamp, successful decryption obtains described transmitting terminal and sends
To the initial data of described receiving terminal, wherein, described current time is to obtain from the real-time clock that described receiving terminal is built-in,
Described receiving terminal periodically connects the Internet time service server and calibrates described real-time clock or periodically use described sending out
Described real-time clock is calibrated by the timestamp carried in the described encryption data that sending end sends.
Such as, transmitting terminal, before encoding described initial data, obtains current time " 2016/04/28 18:12 ",
Described initial data is encrypted by the timestamp as transmitting terminal, it is thus achieved that encryption data, more described encryption data is compiled
Code be audio signal, and by the form of acoustic signals according to predetermined number of times repeatedly, repetition be sent to receiving terminal；Connect
Described acoustic signals, after receiving acoustic signals, is first converted to audio signal, is then filtered off wherein by receiving end
The audio signal of 17.5kHz-19.5kHz, to obtaining described encryption data, time then currently after described audio signal decoding
Between " 2016/04/28 18:12 ", described encryption data is decrypted by the timestamp as receiving terminal, it is judged that described
Whether the time difference between timestamp and the timestamp of described receiving terminal of transmitting terminal is less than the threshold value (such as ± 60s) preset,
If being less than, then judge that data are effective, successful decryption, it is thus achieved that described transmitting terminal is sent to the initial data of described receiving terminal,
The receiving status information of data can also be fed back to transmitting terminal by sound equipment etc. by described receiving terminal.
Wherein, if the networking of described receiving terminal, the Internet time service server can periodically be connected to described reality by networking mode
Shi Shizhong calibrates, synchronization with described transmitting terminal clock to realize；If described receiving terminal does not has UNICOM the Internet,
By periodically using the timestamp carried in the described encryption data of described transmitting terminal transmission, described real-time clock can be entered
Row calibration, synchronization with described transmitting terminal clock to realize；It is all within protection scope of the present invention.
So far, by step S201 to step S203, complete one that third embodiment of the invention provided based on sound
The flow process of the data transmission method of ripple.This method belongs to phase with the above-mentioned data transmission method based on sound wave for transmitting terminal
Same inventive concept, is all the acoustic signals transmission data having selected this high band of 17.5kHz-19.5kHz, has phase
Same beneficial effect.
In the 3rd above-mentioned embodiment, it is provided that a kind of data transmission method based on sound wave, corresponding, this
Application also provides for a kind of data transmission device based on sound wave.Refer to Fig. 4, it provides for fourth embodiment of the invention
A kind of schematic diagram of data transmission device based on sound wave.Owing to device embodiment is substantially similar to embodiment of the method, so
Describing fairly simple, relevant part sees the part of embodiment of the method and illustrates.Device embodiment described below is only
It is only illustrative.
A kind of based on sound wave the data transmission device that fourth embodiment of the invention provides, for receiving terminal, including:
Acoustic receiver module 201, for gathering the acoustic signals of the 17.5kHz-19.5kHz that transmitting terminal is play, and by institute
State acoustic signals and be converted into audio signal；
Frequency domain modular converter 202, is used for using Fourier Transform Algorithm to be transferred described audio signal to frequency domain by time-domain signal
Signal；
Sound wave decoder module 203, for according to the default frequency map described audio signal to being converted to frequency-region signal
It is decoded, it is thus achieved that the initial data that described transmitting terminal sends.
In the embodiment that the application provides, described acoustic receiver module 201 includes Mike and noise reduction chip able to programme,
Described Mike and described noise reduction chip able to programme connect；
Described Mike is used for gathering the acoustic signals of the 17.5kHz-19.5kHz that transmitting terminal is play, and by described acoustic signals
It is converted into audio signal；
Described noise reduction chip able to programme is for carrying out noise reduction process to described audio signal.
Above, a kind of based on sound wave the data transmission device explanation provided for fourth embodiment of the invention.
The present invention also provides for a kind of data transmission system based on sound wave, including: send terminal and receive terminal；
The data transmission method based on sound wave for transmitting terminal that described transmission terminal provides according to the present invention after operation
After converting raw data into audio signal, to be sent to described reception terminal after the form of acoustic signals；
The data transmission method based on sound wave for receiving terminal that described reception terminal provides according to the present invention after operation
Receive the acoustic signals that described transmission terminal sends, and after described acoustic signals is changed, it is thus achieved that described transmission terminal
It is sent to the initial data of described reception terminal.
Owing to described transmission terminal performs the data transmission method based on sound wave for transmitting terminal that the present invention provides, described
Receive that terminal performs that the present invention provides for data transmission method based on sound wave described in receiving terminal, therefore, relevant it
Place repeats no more, and refer to the above-mentioned data transmission method embodiment based on sound wave for transmitting terminal and above-mentioned for receiving
The explanation of the data transmission method embodiment based on sound wave of end understands.
It should be noted that the transmitting terminal described in the embodiment of the present invention, receiving terminal, transmission terminal, reception terminal are only
Distinguish for its role in sonic transmissions and name, in actual application, as long as possess corresponding hardware condition and
Software condition, same intelligent terminal both can be as transmitting terminal, it is also possible to as receiving terminal, both can be as sending eventually
End, it is also possible to as receiving terminal, it is also within protection scope of the present invention.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material
Or feature is contained at least one embodiment or the example of the present invention.In this manual, the signal to above-mentioned term
Property statement be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or
Feature can be to combine in one or more embodiments in office or example in an appropriate manner.Additionally, in the most conflicting feelings
Under condition, those skilled in the art can by the different embodiments described in this specification or example and different embodiment or
The feature of example is combined and combines.
It should be noted that flow chart and block diagram in accompanying drawing show the system of multiple embodiments according to the present invention, side
Method and architectural framework in the cards, function and the operation of computer program.In this, in flow chart or block diagram
Each square frame can represent a module, program segment or a part for code, the one of described module, program segment or code
Part comprises the executable instruction of one or more logic function for realizing regulation.It should also be noted that in some conduct
In the realization replaced, the function marked in square frame can also occur to be different from the order marked in accompanying drawing.Such as,
Two continuous print square frames can essentially perform substantially in parallel, and they can also perform sometimes in the opposite order, and this depends on
Depending on involved function.It is also noted that each square frame in block diagram and/or flow chart and block diagram and/or stream
The combination of the square frame in journey figure, can realize by the special hardware based system of the function or action that perform regulation,
Or can realize with the combination of specialized hardware with computer instruction.
The data transmission device based on sound wave that the embodiment of the present invention is provided can be computer program, including storage
The computer-readable recording medium of program code, instruction that described program code includes can be used for performing previous methods and implements
Method described in example, implements and can be found in embodiment of the method, does not repeats them here.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, the system of foregoing description,
The specific works process of device and unit, is referred to the corresponding process in preceding method embodiment, does not repeats them here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method, permissible
Realize by another way.Device embodiment described above is only schematically, such as, and drawing of described unit
Point, it is only a kind of logic function and divides, actual can have other dividing mode, the most such as, multiple unit when realizing
Or assembly can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not performs.Another point,
Shown or discussed coupling each other or direct-coupling or communication connection can be by some communication interfaces, device
Or the INDIRECT COUPLING of unit or communication connection, can be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, shows as unit
Parts can be or may not be physical location, i.e. may be located at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected according to the actual needs to realize the present embodiment scheme
Purpose.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to be
Unit is individually physically present, it is also possible to two or more unit are integrated in a unit.
If described function is using the form realization of SFU software functional unit and as independent production marketing or use, Ke Yicun
Storage is in a computer read/write memory medium.Based on such understanding, technical scheme is the most in other words
The part contributing prior art or the part of this technical scheme can embody with the form of software product, should
Computer software product is stored in a storage medium, including some instructions with so that a computer equipment is (permissible
It is personal computer, server, or the network equipment etc.) perform the whole or portion of method described in each embodiment of the present invention
Step by step.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only Memory),
Random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store program generation
The medium of code.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: its
Still the technical scheme described in foregoing embodiments can be modified, or special to the most some or all of technology
Levy and carry out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the present invention and respectively implement
The scope of example technical scheme, it all should be contained in the middle of the claim of the present invention and the scope of description.
Claims (10)
1. a data transmission method based on sound wave, for transmitting terminal, it is characterised in that including:
Obtain initial data；
Described initial data is encoded to according to default frequency map the audio signal of 17.5kHz-19.5kHz；
Play described audio signal, thus described audio signal is sent to receiving terminal with the form of acoustic signals.
Data transmission method based on sound wave the most according to claim 1, it is characterised in that described in described broadcasting
Audio signal, thus described audio signal is sent to receiving terminal with the form of acoustic signals, including:
According to default number of times continuously, repeat playing described audio signal, thus by described audio signal with acoustic signals
Form sends to receiving terminal.
Data transmission method based on sound wave the most according to claim 1 and 2, it is characterised in that obtain described
After taking initial data, also include:
Current time is used as timestamp, described initial data to be encrypted, it is thus achieved that encryption data；Wherein, described work as
The front time is to obtain from the real-time clock that described transmitting terminal is built-in, and described transmitting terminal periodically connects the Internet time service server
Described real-time clock is calibrated；
The described audio signal that described initial data is encoded to according to default frequency map 17.5kHz-19.5kHz,
Including:
Described encryption data is encoded to according to default frequency map the audio signal of 17.5kHz-19.5kHz.
4. a data transmission device based on sound wave, for transmitting terminal, it is characterised in that including:
Initial data acquisition module, is used for obtaining initial data；
Data coding module, for being encoded to described initial data according to default frequency map
17.5kHz-19.5kHz audio signal；
Sound wave sending module, is used for playing described audio signal, thus described audio signal is sent out with the form of acoustic signals
Deliver to receiving terminal.
Data transmission device based on sound wave the most according to claim 4, it is characterised in that also include:
Timestamp encrypting module, is used for using current time to be encrypted described initial data as timestamp, it is thus achieved that add
Ciphertext data；Wherein, described current time is to obtain from the real-time clock that described transmitting terminal is built-in, and described transmitting terminal is regular
Connect the Internet time service server described real-time clock is calibrated；
Described data coding module, including:
Encryption data coding unit, for being encoded to described encryption data according to default frequency map
17.5kHz-19.5kHz audio signal.
6. a data transmission method based on sound wave, for receiving terminal, it is characterised in that including:
Gather the acoustic signals of the 17.5kHz-19.5kHz that transmitting terminal is play, and described acoustic signals is converted into audio frequency letter
Number；
Fourier Transform Algorithm is used to be transferred described audio signal to frequency-region signal by time-domain signal；
According to default frequency map, the described audio signal being converted to frequency-region signal is decoded, it is thus achieved that described transmission
The initial data that end sends.
Data transmission method based on sound wave the most according to claim 6, it is characterised in that described according to presetting
Frequency map the described audio signal being converted to frequency-region signal is decoded, it is thus achieved that described transmitting terminal send original
Data, including:
According to default frequency map, the described audio signal being converted to frequency-region signal is decoded, it is thus achieved that transmitting terminal is sent out
The encryption data using timestamp to encrypt sent；
Using current time to be decrypted described encryption data as timestamp, successful decryption obtains described transmitting terminal and sends
To the initial data of described receiving terminal, wherein, described current time is to obtain from the real-time clock that described receiving terminal is built-in,
Described receiving terminal periodically connects the Internet time service server and calibrates described real-time clock or periodically use described sending out
Described real-time clock is calibrated by the timestamp carried in the described encryption data that sending end sends.
8. a data transmission device based on sound wave, for receiving terminal, it is characterised in that including:
Acoustic receiver module, for gathering the acoustic signals of the 17.5kHz-19.5kHz that transmitting terminal is play, and by described sound
Ripple signal is converted into audio signal；
Frequency domain modular converter, is used for using Fourier Transform Algorithm to be transferred described audio signal to frequency domain letter by time-domain signal
Number；
Sound wave decoder module, for carrying out the described audio signal being converted to frequency-region signal according to default frequency map
Decoding, it is thus achieved that the initial data that described transmitting terminal sends.
Data transmission device based on sound wave the most according to claim 8, it is characterised in that described acoustic receiver
Module includes that Mike and noise reduction chip able to programme, described Mike and described noise reduction chip able to programme connect；
Described Mike is used for gathering the acoustic signals of the 17.5kHz-19.5kHz that transmitting terminal is play, and by described acoustic signals
It is converted into audio signal；
Described noise reduction chip able to programme is for carrying out noise reduction process to described audio signal.
10. a data transmission system based on sound wave, it is characterised in that including: send terminal and receive terminal；
Described transmission terminal is after operation according to the data transmission method based on sound wave described in any one of claims 1 to 3
After converting raw data into audio signal, to be sent to described reception terminal after the form of acoustic signals；
Described reception terminal receives institute according to the data transmission method based on sound wave described in claim 6 or 7 after operation
State and send the acoustic signals that terminal sends, and after described acoustic signals is changed, it is thus achieved that described transmission terminal is sent to
The initial data of described reception terminal.
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