CN104954079A - Method and system for coding and decoding in sound wave communication - Google Patents
Method and system for coding and decoding in sound wave communication Download PDFInfo
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- CN104954079A CN104954079A CN201510330194.6A CN201510330194A CN104954079A CN 104954079 A CN104954079 A CN 104954079A CN 201510330194 A CN201510330194 A CN 201510330194A CN 104954079 A CN104954079 A CN 104954079A
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Abstract
The invention discloses a method and a system for coding and decoding in sound wave communication. The method comprises the following steps of carrying out data checking on data to be sent; loading the data to be sent into sound waves for transmission according to the preset waveforms of the sound waves; analyzing the received sound waves to obtain a plurality of decomposition waveforms; matching the corresponding preset waveforms of the sound waves with the decomposition waveforms; decoding undetermined data carried by sound wave waveform strings and carrying out data checking on the undetermined data, wherein the sound wave waveform strings are formed by serially connecting the decomposition waveforms corresponding to the waveforms of the sound waves. The data to be sent is subjected to data checking and is then loaded into the sound waves to be transmitted; the sound waves are compared with the preset waveforms of the sound waves after being received; the undetermined data is decoded according to the comparison result and is subjected to data checking; the data transmission stability and the data transmission success rate are improved.
Description
Technical field
The present invention relates to database field, particularly relate to the method and system of coding and decoding in a kind of acoustic communication.
Background technology
Communicated between movable equipment by acoustic communication and gradually used, because short-range communication can be realized not adding extra wireless device, as long as have MIC and loudspeaker just can carry out acoustic communication, so a lot of product all utilizes sound wave to communicate, but acoustic communication shortcoming is also very large, easily by the interference of ambient noise, cause data transmission fault, less stable, also be that a lot of data volume is larger, and the transmission requiring real-time high can not, need to promote the success rate of sonic transmissions.
Summary of the invention
The invention provides the method and system of coding and decoding in a kind of acoustic communication, it transmits by being loaded in sound wave after data to be sent are carried out data check, contrast with the acoustic waveform preset after receiving sound wave, decode data undetermined according to comparing result and treat given data and carry out data check, improve stability and the success rate of transfer of data.
For realizing above-mentioned design, the present invention by the following technical solutions:
Adopt the method for coding and decoding in a kind of acoustic communication on the one hand, comprising:
Data check is carried out to sent data;
Data to be sent are loaded in sound wave by the acoustic waveform preset and transmit;
Resolve the sound wave received and obtain multiple decomposition waveform;
Described decomposition Waveform Matching is gone out the corresponding acoustic waveform preset;
Decode data undetermined that acoustic waveform string carries and carry out data check to described data undetermined, described acoustic waveform string is in series by the corresponding described decomposition waveform of described acoustic waveform.
Wherein, the described acoustic waveform preset described decomposition Waveform Matching being gone out correspondence, is specially:
Described decomposition Waveform Matching is gone out the acoustic waveform preset that corresponding similarity is not less than threshold value.
Wherein, when the number of described acoustic waveform is multiple, described acoustic waveform decomposes acoustic waveform corresponding to waveform respectively and is connected into acoustic waveform string with other.
Wherein, decode data undetermined that acoustic waveform string carries described in and after data check is carried out to described data undetermined, also comprise:
If data check passes through, then described data undetermined save as correct data; Otherwise request resends data.
Wherein, described default acoustic waveform has 2,4,8 or 16.
Adopt the system of coding and decoding in a kind of acoustic communication on the other hand, comprising:
Send data check unit, for carrying out data check to sent data;
Waveform loads transmission unit, transmits for data to be sent being loaded in sound wave by the acoustic waveform preset;
Sound wave resolution unit, obtains multiple decomposition waveform for resolving the sound wave received;
Acoustic waveform matching unit, for going out the corresponding acoustic waveform preset by described decomposition Waveform Matching;
Receive data check unit, for decoding data undetermined that acoustic waveform string carries and carrying out data check to described data undetermined, described acoustic waveform string is in series by the corresponding described decomposition waveform of described acoustic waveform.
Wherein, described acoustic waveform matching unit, specifically for:
Described decomposition Waveform Matching is gone out the acoustic waveform preset that corresponding similarity is not less than threshold value.
Wherein, when the number of described acoustic waveform is multiple, described acoustic waveform decomposes acoustic waveform corresponding to waveform respectively and is connected into acoustic waveform string with other.
Wherein, also comprise:
Data processing unit undetermined, if pass through for data check, then described data undetermined save as correct data; Otherwise request resends data.
Wherein, described default acoustic waveform has 2,4,8 or 16.
Beneficial effect of the present invention is: transmit by being loaded in sound wave after data to be sent are carried out data check, contrast with the acoustic waveform preset after receiving sound wave, decode data undetermined according to comparing result and treat given data and carry out data check, improve stability and the success rate of transfer of data.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing the embodiment of the present invention is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the content of the embodiment of the present invention and these accompanying drawings.
Fig. 1 is the method flow diagram of the first embodiment of the method for coding and decoding in a kind of acoustic communication provided in the specific embodiment of the invention.
Fig. 2 is the method flow diagram of the second embodiment of the method for coding and decoding in a kind of acoustic communication provided in the specific embodiment of the invention.
Fig. 3 is the block diagram of the first embodiment of the system of coding and decoding in a kind of acoustic communication provided in the specific embodiment of the invention.
Fig. 4 is the block diagram of the second embodiment of the system of coding and decoding in a kind of acoustic communication provided in the specific embodiment of the invention.
Embodiment
The technical problem solved for making the present invention, the technical scheme of employing and the technique effect that reaches are clearly, be described in further detail below in conjunction with the technical scheme of accompanying drawing to the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, it is the method flow diagram of the first embodiment of the method for coding and decoding in a kind of acoustic communication provided in the specific embodiment of the invention.As shown in the figure, the method, comprising:
Step S101: carry out data check to sent data.
Accurate in order to confirm the data that receiving terminal receives, verify to sent data when data send, specifically adopt parity check, CRC cyclic redundancy check (CRC) etc., the mode of the realization of data check has multiple, does not elaborate here.
Step S102: data to be sent are loaded in sound wave by the acoustic waveform preset and transmit.
In acoustic communication process, an acoustic waveform is defined as a kind of data element, the data that multiple data element has formed, to be exactly that each data element said in data is encoded to a corresponding acoustic waveform in Data import to sound wave, the combination of multiple acoustic waveform just carries data to be sent, the combination of the multiple acoustic waveforms obtained by loudspeaker output encoder, can realize the transmission of data.
Step S103: resolve the sound wave received and obtain multiple decomposition waveform.
The continuous sound wave received is resolved and obtains multiple separate decomposition waveform.
Step S104: described decomposition Waveform Matching is gone out the corresponding acoustic waveform preset.
Mating decomposing waveform with the acoustic waveform preset, confirming that corresponding acoustic waveform is to confirm the data element that this decomposition waveform carries.
Step S105: decode data undetermined that acoustic waveform string carries and carry out data check to described data undetermined, described acoustic waveform string is in series by the corresponding described decomposition waveform of described acoustic waveform.
In sum, transmit by being loaded in sound wave after data to be sent are carried out data check, contrast with the acoustic waveform preset after receiving sound wave, decode data undetermined according to comparing result and treat given data and carry out data check, improve stability and the success rate of transfer of data.
Please refer to Fig. 2, it is the method flow diagram of the second embodiment of the method for coding and decoding in a kind of acoustic communication provided in the specific embodiment of the invention.As shown in the figure, the method, comprising:
Step S201: carry out data check to sent data.
Step S202: data to be sent are loaded in sound wave by the acoustic waveform preset and transmit.
Described default acoustic waveform has 2,4,8 or 16.
Generally speaking, the data stored in computer are binary data, if transmitted with binary data, so only need 2 acoustic waveforms, each acoustic waveform transmits a data element; If transmitted with 4 binary data, need 4 acoustic waveforms, each acoustic waveform transmits 2 data elements; Further, if transmitted with 16 binary data, need 16 acoustic waveforms, each acoustic waveform transmits 4 data elements.If that is with 16 acoustic waveform transmission data, can transmission speed be improved, be equivalent to the bandwidth increasing transfer of data.Although it should be noted that and can arrange 32,64 or other any 2n (n is positive integer) individual acoustic waveform in theory, acoustic waveform is more, and the difference between acoustic waveform is less, higher to the requirement of precision in sonicated process.
Step S203: resolve the sound wave received and obtain multiple decomposition waveform.
Step S204: described decomposition Waveform Matching is gone out the acoustic waveform preset that corresponding similarity is not less than threshold value.
When the number of described acoustic waveform is multiple, described acoustic waveform decomposes acoustic waveform corresponding to waveform respectively and is connected into acoustic waveform string with other.
In acoustic receiver process, may produce certain wave form varies because of external interference, cause receiving the waveform generated when decomposition waveform that rear parsing obtains is not coding, even certain decomposes waveform and has the higher acoustic waveform preset of multiple similarity.
Step S205: decode data undetermined that acoustic waveform string carries and carry out data check to described data undetermined, described acoustic waveform string is in series by the corresponding described decomposition waveform of described acoustic waveform.
Generally speaking, last matching result one decomposes waveform and only has an acoustic waveform, if there is multiple acoustic waveform, then can produce multiple acoustic waveform string, now need to decode and data check to multiple acoustic waveform string.
Step S206: if data check passes through, then described data undetermined save as correct data; Otherwise request resends data.
In sum, transmit by being loaded in sound wave after data to be sent are carried out data check, contrast with the acoustic waveform preset after receiving sound wave, decode data undetermined according to comparing result and treat given data and carry out data check, improve stability and the success rate of transfer of data.
It is below the embodiment of the system of coding and decoding in a kind of acoustic communication of this programme, in acoustic communication, the embodiment of the system of coding and decoding realizes based on the embodiment of the method for coding and decoding in acoustic communication, description not most in the embodiment of system, please refer to the embodiment of method.
Please refer to Fig. 3, it is the block diagram of the first embodiment of the system of coding and decoding in a kind of acoustic communication provided in the specific embodiment of the invention.As shown in the figure, this system, comprising:
Send data check unit 310, for carrying out data check to sent data;
Waveform loads transmission unit 320, transmits for data to be sent being loaded in sound wave by the acoustic waveform preset;
Sound wave resolution unit 330, obtains multiple decomposition waveform for resolving the sound wave received;
Acoustic waveform matching unit 340, for going out the corresponding acoustic waveform preset by described decomposition Waveform Matching;
Receive data check unit 350, for decoding data undetermined that acoustic waveform string carries and carrying out data check to described data undetermined, described acoustic waveform string is in series by the corresponding described decomposition waveform of described acoustic waveform.
In sum, the collaborative work of above-mentioned each unit, transmit by being loaded in sound wave after data to be sent are carried out data check, contrast with the acoustic waveform preset after receiving sound wave, decode data undetermined according to comparing result and treat given data and carry out data check, improve stability and the success rate of transfer of data.
Please refer to Fig. 4, it is the block diagram of the second embodiment of the system of coding and decoding in a kind of acoustic communication provided in the specific embodiment of the invention.As shown in the figure, this system, comprising:
Send data check unit 310, for carrying out data check to sent data;
Waveform loads transmission unit 320, transmits for data to be sent being loaded in sound wave by the acoustic waveform preset;
Sound wave resolution unit 330, obtains multiple decomposition waveform for resolving the sound wave received;
Acoustic waveform matching unit 340, for going out the corresponding acoustic waveform preset by described decomposition Waveform Matching;
Receive data check unit 350, for decoding data undetermined that acoustic waveform string carries and carrying out data check to described data undetermined, described acoustic waveform string is in series by the corresponding described decomposition waveform of described acoustic waveform.
Wherein, described acoustic waveform matching unit 340, specifically for:
Described decomposition Waveform Matching is gone out the acoustic waveform preset that corresponding similarity is not less than threshold value.
Wherein, when the number of described acoustic waveform is multiple, described acoustic waveform decomposes acoustic waveform corresponding to waveform respectively and is connected into acoustic waveform string with other.
Wherein, also comprise:
Data processing unit 360 undetermined, if pass through for data check, then described data undetermined save as correct data; Otherwise request resends data.
Wherein, described default acoustic waveform has 2,4,8 or 16.
In sum, the collaborative work of above-mentioned each unit, transmit by being loaded in sound wave after data to be sent are carried out data check, contrast with the acoustic waveform preset after receiving sound wave, decode data undetermined according to comparing result and treat given data and carry out data check, improve stability and the success rate of transfer of data.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (10)
1. the method for coding and decoding in acoustic communication, is characterized in that, comprising:
Data check is carried out to sent data;
Data to be sent are loaded in sound wave by the acoustic waveform preset and transmit;
Resolve the sound wave received and obtain multiple decomposition waveform;
Described decomposition Waveform Matching is gone out the corresponding acoustic waveform preset;
Decode data undetermined that acoustic waveform string carries and carry out data check to described data undetermined, described acoustic waveform string is in series by the corresponding described decomposition waveform of described acoustic waveform.
2. method according to claim 1, is characterized in that, the described acoustic waveform preset described decomposition Waveform Matching being gone out correspondence, is specially:
Described decomposition Waveform Matching is gone out the acoustic waveform preset that corresponding similarity is not less than threshold value.
3. method according to claim 2, is characterized in that, when the number of described acoustic waveform is multiple, described acoustic waveform decomposes acoustic waveform corresponding to waveform respectively and is connected into acoustic waveform string with other.
4. method according to claim 1, is characterized in that, described in decode data undetermined that acoustic waveform string carries and after data check is carried out to described data undetermined, also comprise:
If data check passes through, then described data undetermined save as correct data; Otherwise request resends data.
5. method according to claim 1, is characterized in that, described default acoustic waveform has 2,4,8 or 16.
6. the system of coding and decoding in acoustic communication, is characterized in that, comprising:
Send data check unit, for carrying out data check to sent data;
Waveform loads transmission unit, transmits for data to be sent being loaded in sound wave by the acoustic waveform preset;
Sound wave resolution unit, obtains multiple decomposition waveform for resolving the sound wave received;
Acoustic waveform matching unit, for going out the corresponding acoustic waveform preset by described decomposition Waveform Matching;
Receive data check unit, for decoding data undetermined that acoustic waveform string carries and carrying out data check to described data undetermined, described acoustic waveform string is in series by the corresponding described decomposition waveform of described acoustic waveform.
7. system according to claim 6, is characterized in that, described acoustic waveform matching unit, specifically for:
Described decomposition Waveform Matching is gone out the acoustic waveform preset that corresponding similarity is not less than threshold value.
8. system according to claim 7, is characterized in that, when the number of described acoustic waveform is multiple, described acoustic waveform decomposes acoustic waveform corresponding to waveform respectively and is connected into acoustic waveform string with other.
9. system according to claim 6, is characterized in that, also comprises:
Data processing unit undetermined, if pass through for data check, then described data undetermined save as correct data; Otherwise request resends data.
10. system according to claim 6, is characterized in that, described default acoustic waveform has 2,4,8 or 16.
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| CN108075837A (en) * | 2016-11-14 | 2018-05-25 | 佛山市顺德区美的电热电器制造有限公司 | Hexadecimal code, coding/decoding method and the device of ultrasonic communication |
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| CN108075837A (en) * | 2016-11-14 | 2018-05-25 | 佛山市顺德区美的电热电器制造有限公司 | Hexadecimal code, coding/decoding method and the device of ultrasonic communication |
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