CA2875232A1 - Audio data transmission method - Google Patents
Audio data transmission method Download PDFInfo
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- CA2875232A1 CA2875232A1 CA2875232A CA2875232A CA2875232A1 CA 2875232 A1 CA2875232 A1 CA 2875232A1 CA 2875232 A CA2875232 A CA 2875232A CA 2875232 A CA2875232 A CA 2875232A CA 2875232 A1 CA2875232 A1 CA 2875232A1
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- audio data
- modulation
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- transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/233—Processing of audio elementary streams
Abstract
An audio data transmission method, which comprises the steps of: a first device modulating audio data to be transmitted respectively through at least two modulation modes, so as to generate audio data code streams in at least two modulation modes; the first device splicing the audio data code streams in the at least two modulation modes to an audio data stream; and through an audio interface of the first device, in the same time reference system, transmitting the audio data stream to a second device all at once.
Description
' . CA 02875232 2014-11-28 AUDIO DATA TRANSMISSION METHOD
FIELD
Embodiments of the present disclosure generally relate to an electronic technique field, and more particularly, to an audio data transmission method.
BACKGROUND
In a current audio data transmission via an audio interface, different mobile terminals have different audio transmission characteristics. In order to be compatible with the audio transmission characteristics of different mobile terminals, an apparatus (such as an electronic signature token) communicating with the mobile terminal needs to try with audio data in different modulation modes automatically so as to find a most suitable modulation mode matched with each of the different mobile terminals.
Currently, there are few audio communication means, and consequently no suitable mode can be compatible with the communication between different mobile terminals and different electronic signature tokens.
Moreover, since both sides in the communication may not necessarily be fixed and can have their own different audio transmission characteristics, when the demodulation mode and the modulation mode not matched with each other are adopted during the audio data transmission, a data interaction speed may be reduced and it is easy for a distortion to occur in the interactive data.
SUMMARY
Embodiments of the present disclosure seek to solve at least one of the problems existing in the related art to at least some extent.
Accordingly, an objective of the present disclosure is to provide an audio data transmission i method, which can perform audio data interaction quickly and reduce the distortion degree of the interactive data largely.
In order to achieve the above objectives, embodiments of the present disclosure provide an audio data transmission method, including modulating by a first device audio data to be transmitted using at least two modulation modes to generate audio data frame streams in the at least two modulation modes, splicing by the first device the audio data frame streams in the at i =
, . CA 02875232 2014-11-28 =
least two modulation modes into an audio data stream and transmitting the audio data stream to a second device in one transmission in a same time reference frame via an audio interface of the first device.
With the audio data transmission method according to embodiments of the present disclosure, the audio data frame streams in various modulation modes may be spliced into one audio data stream to perform the data interaction in one transmission, and thus a success rate of the data transmission is increased greatly. In addition, the probability of data transmission failure due to a degree of distortion during the data interaction is decreased and the quality of the data interaction is also improved.
In an embodiment of the present disclosure, the same time reference frame means that a length of a start moment and/or an end moment at a time period of each modulation waveform with respect to a predetermined reference moment is predetermined.
In an embodiment of the present disclosure, the audio data to be transmitted are identification data in a fixed format or transmission data containing a variable content.
In an embodiment of the present disclosure, the audio data frame streams are generated by:
modulating the audio data to be transmitted into an analog waveform signal using the modulation modes of the first device so as to generate the audio data frame streams.
In some embodiments, the modulation mode includes an amplitude modulation, a frequency modulation, a carrier modulation or a subcarrier modulation.
Moreover, a manner of the splicing is a splicing manner without a time interval or a splicing manner with a time interval.
Specifically, in an embodiment of the present disclosure, the first device is a mobile terminal and the second device is an electronic signature token.
Additional aspects and advantages of embodiments of present disclosure will be given in part in the following descriptions, become apparent in part from the following descriptions, or be learned from the practice of the embodiments of the present disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other aspects and advantages of embodiments of the present disclosure will become apparent and more readily appreciated from the following descriptions made with reference to the accompanying drawings, in which:
FIELD
Embodiments of the present disclosure generally relate to an electronic technique field, and more particularly, to an audio data transmission method.
BACKGROUND
In a current audio data transmission via an audio interface, different mobile terminals have different audio transmission characteristics. In order to be compatible with the audio transmission characteristics of different mobile terminals, an apparatus (such as an electronic signature token) communicating with the mobile terminal needs to try with audio data in different modulation modes automatically so as to find a most suitable modulation mode matched with each of the different mobile terminals.
Currently, there are few audio communication means, and consequently no suitable mode can be compatible with the communication between different mobile terminals and different electronic signature tokens.
Moreover, since both sides in the communication may not necessarily be fixed and can have their own different audio transmission characteristics, when the demodulation mode and the modulation mode not matched with each other are adopted during the audio data transmission, a data interaction speed may be reduced and it is easy for a distortion to occur in the interactive data.
SUMMARY
Embodiments of the present disclosure seek to solve at least one of the problems existing in the related art to at least some extent.
Accordingly, an objective of the present disclosure is to provide an audio data transmission i method, which can perform audio data interaction quickly and reduce the distortion degree of the interactive data largely.
In order to achieve the above objectives, embodiments of the present disclosure provide an audio data transmission method, including modulating by a first device audio data to be transmitted using at least two modulation modes to generate audio data frame streams in the at least two modulation modes, splicing by the first device the audio data frame streams in the at i =
, . CA 02875232 2014-11-28 =
least two modulation modes into an audio data stream and transmitting the audio data stream to a second device in one transmission in a same time reference frame via an audio interface of the first device.
With the audio data transmission method according to embodiments of the present disclosure, the audio data frame streams in various modulation modes may be spliced into one audio data stream to perform the data interaction in one transmission, and thus a success rate of the data transmission is increased greatly. In addition, the probability of data transmission failure due to a degree of distortion during the data interaction is decreased and the quality of the data interaction is also improved.
In an embodiment of the present disclosure, the same time reference frame means that a length of a start moment and/or an end moment at a time period of each modulation waveform with respect to a predetermined reference moment is predetermined.
In an embodiment of the present disclosure, the audio data to be transmitted are identification data in a fixed format or transmission data containing a variable content.
In an embodiment of the present disclosure, the audio data frame streams are generated by:
modulating the audio data to be transmitted into an analog waveform signal using the modulation modes of the first device so as to generate the audio data frame streams.
In some embodiments, the modulation mode includes an amplitude modulation, a frequency modulation, a carrier modulation or a subcarrier modulation.
Moreover, a manner of the splicing is a splicing manner without a time interval or a splicing manner with a time interval.
Specifically, in an embodiment of the present disclosure, the first device is a mobile terminal and the second device is an electronic signature token.
Additional aspects and advantages of embodiments of present disclosure will be given in part in the following descriptions, become apparent in part from the following descriptions, or be learned from the practice of the embodiments of the present disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other aspects and advantages of embodiments of the present disclosure will become apparent and more readily appreciated from the following descriptions made with reference to the accompanying drawings, in which:
Fig. 1 is a flow chart of an audio data transmission method according to an embodiment of the present disclosure;
Fig. 2 is a block diagram of an audio data transmission system according to an embodiment of the present disclosure;
Fig. 3 is a specific block diagram of an audio data transmission system according to an embodiment of the present disclosure;
Fig. 4 is a schematic diagram of an audio data transmission apparatus for a mobile terminal according to an embodiment of the present disclosure;
Fig. 5 is a schematic diagram of an electronic signature token according to an embodiment of the present disclosure; and Fig. 6 is a schematic diagram of a same time reference frame of an audio data transmission method according to an embodiment of the present disclosure.
DETAILED DESCRIPTION
Reference will be made in detail to embodiments of the present disclosure.
Embodiments of the present disclosure will be shown in drawings, in which the same or similar elements and the elements having same or similar functions are denoted by like reference numerals throughout the descriptions. The embodiments described herein according to drawings are explanatory and illustrative, not construed to limit the present disclosure.
Various embodiments and examples are provided in the following description to implement different structures of the present disclosure. In order to simplify the present disclosure, certain elements and settings will be described. However, these elements and settings are only by way of example and are not intended to limit the present disclosure. In addition, reference numerals may be repeated in different examples in the present disclosure. This repeating is for the purpose of simplification and clarity and does not refer to relations between different embodiments and/or settings. Furthermore, examples of different processes and materials are provided in the present disclosure. However, it would be appreciated by those skilled in the art that other processes and/or materials may be also applied. Moreover, a structure in which a first feature is "on" a second feature may include an embodiment in which the first feature directly contacts the second feature, and may also include an embodiment in which an additional feature is formed between the first feature and the second feature so that the first feature does not directly contact the second feature.
Fig. 2 is a block diagram of an audio data transmission system according to an embodiment of the present disclosure;
Fig. 3 is a specific block diagram of an audio data transmission system according to an embodiment of the present disclosure;
Fig. 4 is a schematic diagram of an audio data transmission apparatus for a mobile terminal according to an embodiment of the present disclosure;
Fig. 5 is a schematic diagram of an electronic signature token according to an embodiment of the present disclosure; and Fig. 6 is a schematic diagram of a same time reference frame of an audio data transmission method according to an embodiment of the present disclosure.
DETAILED DESCRIPTION
Reference will be made in detail to embodiments of the present disclosure.
Embodiments of the present disclosure will be shown in drawings, in which the same or similar elements and the elements having same or similar functions are denoted by like reference numerals throughout the descriptions. The embodiments described herein according to drawings are explanatory and illustrative, not construed to limit the present disclosure.
Various embodiments and examples are provided in the following description to implement different structures of the present disclosure. In order to simplify the present disclosure, certain elements and settings will be described. However, these elements and settings are only by way of example and are not intended to limit the present disclosure. In addition, reference numerals may be repeated in different examples in the present disclosure. This repeating is for the purpose of simplification and clarity and does not refer to relations between different embodiments and/or settings. Furthermore, examples of different processes and materials are provided in the present disclosure. However, it would be appreciated by those skilled in the art that other processes and/or materials may be also applied. Moreover, a structure in which a first feature is "on" a second feature may include an embodiment in which the first feature directly contacts the second feature, and may also include an embodiment in which an additional feature is formed between the first feature and the second feature so that the first feature does not directly contact the second feature.
In the description of the present disclosure, unless specified or limited otherwise, it should be noted that, terms "mounted," "connected" and "coupled" may be understood broadly, such as electronic connection or mechanical connection, inner communication between two elements, direct connection or indirect connection via intermediary. These having ordinary skills in the art should understand the specific meanings in the present disclosure according to specific situations.
With reference to the following descriptions and drawings, these and other aspects of embodiments of the present disclosure will be distinct. In the descriptions and drawings, some particular embodiments are described in order to show means of the principles of embodiments according to the present disclosure, however, it should be appreciated that the scope of embodiments according to the present disclosure is not limited. On the contrary, embodiments of the present disclosure include all the changes, alternatives, and modifications falling into the scope of the spirit and principles of the attached claims.
An audio data transmission method according to embodiments of a first aspect of the present disclosure will be described with reference to Fig. 1.
As shown in Fig. 1, the audio data transmission method includes following steps.
At step S101, a first device obtains audio data to be transmitted.
In an embodiment of the present disclosure, the first device may be a mobile terminal.
Specifically, the mobile terminal may be a mobile phone or a tablet PC, but is not limited to these.
The audio data mean data transmitted in an audio manner. The audio data to be transmitted may be identification data in a fixed format, for example the identification data in the fixed format identify the modulation modes used by the audio data to be transmitted; or the audio data to be transmitted may be transmission data containing a variable content, for example the transmission data containing the variable content are various data commonly required to be transmitted, such as user information, trade information and so on.
At step S102, the first device modulates the audio data to be transmitted using at least two modulation modes respectively.
In an embodiment of the present disclosure, the modulation mode is an amplitude modulation, a frequency modulation, a carrier modulation or a subcarrier modulation.
At step S103, audio data frame streams in the at least two modulation modes are generated.
In other words, in an embodiment of the present disclosure, the first device may modulate the audio data to be transmitted using four modulation modes respectively to generate audio data frame streams A, B, C and D in the four modulation modes, in which modulation modes corresponding to the audio data frame streams A, B, C and D are different from each other.
In an embodiment of the present disclosure, the audio data frame streams are obtained by modulating the audio data to be transmitted into an analog waveform signal using the modulation modes of the first device so as to generate the audio data frame streams.
At step S104, the first device splices the audio data frame streams in the at least two modulation modes into an audio data stream.
In an embodiment of the present disclosure, a manner of the splicing is a splicing manner without a time interval or a splicing manner with a time interval. The splicing is to connect the analog waveforms modulated using different modulation modes together.
At step S105, the audio data stream is transmitted to a second device in one transmission in a same time reference frame via an audio interface of the first device.
In an embodiment of the present disclosure, the same time reference frame means that a length of a start moment and/or an end moment at a time period of each modulation waveform with respect to a predetermined reference moment is predetermined.
The same time reference frame is described in detail with reference to Fig. 6.
For example, two modulation waveforms are sent out in turn, a common reference moment on a time axis is determined as TO, a start moment of a time period of the first modulation waveform is set as T1, a period between T1 and TO is predetermined; a start moment of a time period of the second modulation waveform is set as T2, a period between T2 and TO is predetermined. Certainly, T2 is larger than T1 by this time.
Likewise, the period between the end moment of the time period of each modulation waveform and the predetermined reference moment is predetermined. For example, the common reference moment on the time axis is determined as TO, an end moment of the time period of the first modulation waveform is set as T1', a period between T1' and TO is predetermined; an end moment of the time period of the second modulation waveform is set as 12', a period between T2' and TO is predetermined. Certainly, T2' is larger than T1' by this time.
Certainly, the start moment T2 of the time period of the second modulation waveform may be identical with the end moment T1' of the time period of the first modulation waveform.
Likewise, the period between both the start moment and end moment of the time period of each modulation waveform and the predetermined reference moment may be predetermined.
With reference to the following descriptions and drawings, these and other aspects of embodiments of the present disclosure will be distinct. In the descriptions and drawings, some particular embodiments are described in order to show means of the principles of embodiments according to the present disclosure, however, it should be appreciated that the scope of embodiments according to the present disclosure is not limited. On the contrary, embodiments of the present disclosure include all the changes, alternatives, and modifications falling into the scope of the spirit and principles of the attached claims.
An audio data transmission method according to embodiments of a first aspect of the present disclosure will be described with reference to Fig. 1.
As shown in Fig. 1, the audio data transmission method includes following steps.
At step S101, a first device obtains audio data to be transmitted.
In an embodiment of the present disclosure, the first device may be a mobile terminal.
Specifically, the mobile terminal may be a mobile phone or a tablet PC, but is not limited to these.
The audio data mean data transmitted in an audio manner. The audio data to be transmitted may be identification data in a fixed format, for example the identification data in the fixed format identify the modulation modes used by the audio data to be transmitted; or the audio data to be transmitted may be transmission data containing a variable content, for example the transmission data containing the variable content are various data commonly required to be transmitted, such as user information, trade information and so on.
At step S102, the first device modulates the audio data to be transmitted using at least two modulation modes respectively.
In an embodiment of the present disclosure, the modulation mode is an amplitude modulation, a frequency modulation, a carrier modulation or a subcarrier modulation.
At step S103, audio data frame streams in the at least two modulation modes are generated.
In other words, in an embodiment of the present disclosure, the first device may modulate the audio data to be transmitted using four modulation modes respectively to generate audio data frame streams A, B, C and D in the four modulation modes, in which modulation modes corresponding to the audio data frame streams A, B, C and D are different from each other.
In an embodiment of the present disclosure, the audio data frame streams are obtained by modulating the audio data to be transmitted into an analog waveform signal using the modulation modes of the first device so as to generate the audio data frame streams.
At step S104, the first device splices the audio data frame streams in the at least two modulation modes into an audio data stream.
In an embodiment of the present disclosure, a manner of the splicing is a splicing manner without a time interval or a splicing manner with a time interval. The splicing is to connect the analog waveforms modulated using different modulation modes together.
At step S105, the audio data stream is transmitted to a second device in one transmission in a same time reference frame via an audio interface of the first device.
In an embodiment of the present disclosure, the same time reference frame means that a length of a start moment and/or an end moment at a time period of each modulation waveform with respect to a predetermined reference moment is predetermined.
The same time reference frame is described in detail with reference to Fig. 6.
For example, two modulation waveforms are sent out in turn, a common reference moment on a time axis is determined as TO, a start moment of a time period of the first modulation waveform is set as T1, a period between T1 and TO is predetermined; a start moment of a time period of the second modulation waveform is set as T2, a period between T2 and TO is predetermined. Certainly, T2 is larger than T1 by this time.
Likewise, the period between the end moment of the time period of each modulation waveform and the predetermined reference moment is predetermined. For example, the common reference moment on the time axis is determined as TO, an end moment of the time period of the first modulation waveform is set as T1', a period between T1' and TO is predetermined; an end moment of the time period of the second modulation waveform is set as 12', a period between T2' and TO is predetermined. Certainly, T2' is larger than T1' by this time.
Certainly, the start moment T2 of the time period of the second modulation waveform may be identical with the end moment T1' of the time period of the first modulation waveform.
Likewise, the period between both the start moment and end moment of the time period of each modulation waveform and the predetermined reference moment may be predetermined.
= CA 02875232 2014-11-28 Certainly, in the embodiment of the present disclosure, the predetermined reference moments may be identical or different.
Certainly, in the embodiment of the present disclosure, each of the modulation waveforms may be located anywhere within the time period.
For example: 1) a start moment of a modulation waveform is identical with a start moment of a time period of the modulation waveform, and an end moment of the modulation waveform is identical with an end moment of the time period of the modulation waveform, see T1-T1' shown in Fig. 6.
2) The start moment of the modulation waveform is identical with the start moment of the time period of the modulation waveform, and the end moment of the modulation waveform is different from the end moment of the time period of the modulation waveform, see T2-T2' shown in Fig. 6.
3) The start moment of the modulation waveform is different from the start moment of the time period of the modulation waveform, and the end moment of the modulation waveform is identical with the end moment of the time period of the modulation waveform, see T3-T3' shown in Fig. 6.
4) The start moment of the modulation waveform is different from the start moment of the time period of the modulation waveform, and the end moment of the modulation waveform is different from the end moment of the time period of the modulation waveform, see T4-T4' shown in Fig. 6. When the start moment of the modulation waveform is different from the start moment of the time period of the modulation waveform, and the end moment of the modulation waveform is different from the end moment of the time period of the modulation waveform, the start moment of each modulation waveform should be synchronized according to a synchronization head information thereof Therefore, the above audio data frame streams A, B, C and D in the four modulation modes are spliced into the audio data stream, and thus it is convenient for the audio data to be transmitted in one transmission, the number of times of transmission is reduced, the probability of data distortion is decreased, a data quantity during the data interaction is improved and the success rate of the data transmission is also improved. In addition, the probability of data transmission failure due to a degree of distortion during the data interaction is decreased and the quality of the data interaction is also improved.
Certainly, in the embodiment of the present disclosure, each of the modulation waveforms may be located anywhere within the time period.
For example: 1) a start moment of a modulation waveform is identical with a start moment of a time period of the modulation waveform, and an end moment of the modulation waveform is identical with an end moment of the time period of the modulation waveform, see T1-T1' shown in Fig. 6.
2) The start moment of the modulation waveform is identical with the start moment of the time period of the modulation waveform, and the end moment of the modulation waveform is different from the end moment of the time period of the modulation waveform, see T2-T2' shown in Fig. 6.
3) The start moment of the modulation waveform is different from the start moment of the time period of the modulation waveform, and the end moment of the modulation waveform is identical with the end moment of the time period of the modulation waveform, see T3-T3' shown in Fig. 6.
4) The start moment of the modulation waveform is different from the start moment of the time period of the modulation waveform, and the end moment of the modulation waveform is different from the end moment of the time period of the modulation waveform, see T4-T4' shown in Fig. 6. When the start moment of the modulation waveform is different from the start moment of the time period of the modulation waveform, and the end moment of the modulation waveform is different from the end moment of the time period of the modulation waveform, the start moment of each modulation waveform should be synchronized according to a synchronization head information thereof Therefore, the above audio data frame streams A, B, C and D in the four modulation modes are spliced into the audio data stream, and thus it is convenient for the audio data to be transmitted in one transmission, the number of times of transmission is reduced, the probability of data distortion is decreased, a data quantity during the data interaction is improved and the success rate of the data transmission is also improved. In addition, the probability of data transmission failure due to a degree of distortion during the data interaction is decreased and the quality of the data interaction is also improved.
Specifically, in an embodiment of the present disclosure, the second device may be the electronic signature token, such as an audio Key (i.e. a Key with an audio interface) which is a Key device similar to a USB Key and has a different data transmission manner, but embodiments of the present disclosure are not limited to this.
With the audio data transmission method according to embodiments of the present disclosure, the audio data frame streams in different modulation modes can be spliced into the audio data stream so as to perform the data interaction in one transmission, thus greatly improving the data quantity in one data interaction. In addition, after two communicating parties select an available modulation mode in which the data transmission is performed, the degree of distortion of the interactive data is largely reduced, thus ensuring the quality of the data interaction.
An audio data transmission system according to embodiments of a second aspect of the present disclosure will be described with reference to Figs. 2 and 3.
As shown in Fig. 2, the audio data transmission system includes a first device 201 and a second device 202, and the first device 201 is connected with the second device 202 via an audio interface 203. The first device 201 modulates audio data to be transmitted using at least two modulation modes to generate audio data frame streams in the at least two modulation modes, splices the audio data frame streams in the at least two modulation modes into an audio data stream and transmits the audio data stream to the second device 202 in one transmission via the audio interface 203.
In an embodiment of the present disclosure, the first device 201 is further configured to transmit the audio data stream to the second device 202 in one transmission in a same time reference frame via the audio interface 203.
The same time reference frame means that a length of a start moment and/or an end moment at a time period of each modulation waveform with respect to a predetermined reference moment is predetermined.
In another embodiment of the present disclosure, the first device 201 is further configured to transmit the audio data stream to the second device 202 in one transmission in different time reference frames via the audio interface 203.
The different time reference frames are frames in which a start moment of each modulation waveform is obtained according to a synchronization head information.
Certainly, when the audio data to be transmitted are modulated into the audio data frame streams, it is further required to =
= CA 02875232 2014-11-28 =
generate the synchronization head information which is configured to indicate the start moment of each modulation waveform, and to add the generated synchronization head information into the audio data frame streams, such that it is ensured that the start moment of each modulation waveform can be obtained.
In an embodiment of the present disclosure, the audio data to be transmitted are identification data in a fixed format or transmission data containing a variable content. The identification data in the fixed format can identify the modulation modes used by the audio data to be transmitted; the transmission data containing the variable content are various data commonly required to be transmitted, such as user information, trade information and so on.
Moreover, the audio data frame streams are generated by modulating the audio data to be transmitted into an analog waveform signal using the modulation modes of the first device 201 so as to generate the audio data frame streams.
In the embodiment of the present disclosure, the modulation mode may be an amplitude modulation, a frequency modulation, a carrier modulation or a subcarrier modulation.
Specifically, in an embodiment of the present disclosure, as shown in Fig. 3, the first device 201 may modulate the audio data to be transmitted using four modulation modes respectively to generate audio data frame streams A, B, C and D in the four modulation modes, in which modulation modes corresponding to the audio data frame streams A, B, C and D
are different from each other.
The first device 201 splices the above audio data frame streams A, B, C and D
in the four modulation modes into the audio data stream, and thus it is convenient for the audio data to be transmitted in one transmission, the number of times of transmission is reduced, the probability of a data distortion is decreased and the data quantity during the data interaction is also improved.
In an embodiment of the present disclosure, a manner of the splicing may be a splicing manner without a time interval or a splicing manner with a time interval.
In an embodiment of the present disclosure, the first device 201 may be a mobile terminal and the second device 202 may be an electronic signature token.
With the audio data transmission system according to embodiments of the present disclosure, the data interaction between the first device 201 and the second device 202 can be performed rapidly, and thus the data quantity during the data interaction is improved.
In addition, after two communicating parties select an available modulation mode in which the data transmission is =
=
performed, the distortion and the degree of distortion of the interactive data are largely reduced, thus ensuring and improving the quality of the data interaction.
An audio data transmission apparatus 400 for a mobile terminal according to embodiments of a third aspect of the present disclosure will be described in the following with reference to Fig. 4.
As shown in Fig. 4, the apparatus 400 is used in a mobile terminal 404 and includes a modulating module 401, a splicing module 402 and a transmitting module 403.
The modulating module 401 is configured to modulate audio data to be transmitted using at least two modulation modes to generate audio data frame streams in the at least two modulation modes. The splicing module 402 is configured to splice the audio data frame streams in the at least two modulation modes into an audio data stream. The transmitting module 403 is configured to transmit the audio data stream to an electronic signature token 500 in one transmission via an audio interface 405 of the mobile terminal 404.
In an embodiment of the present disclosure, the transmitting module 403 is further configured to transmit the audio data stream to the electronic signature token 500 in one transmission in a same time reference frame via the audio interface 405 of the mobile terminal 404.
The same time reference frame means that a length of a start moment and/or an end moment at a time period of each modulation waveform with respect to a predetermined reference moment is predetermined.
In another embodiment of the present disclosure, the transmitting module 403 is further configured to transmit the audio data stream to the electronic signature token 500 in one transmission in different time reference frames via the audio interface 405 of the mobile terminal 404.
The different time reference frames are frames in which a start moment of each modulation waveform is obtained according to a synchronization head information.
Certainly, when the audio data to be transmitted are modulated into the audio data frame streams, it is further required to generate the synchronization head information which is configured to indicate the start moment of each modulation waveform, and to add the generated synchronization head information into the audio data frame streams, such that it is ensured that the start moment of each modulation waveform can be obtained.
In an embodiment of the present disclosure, the modulating module 401 is further configured to modulate the audio data to be transmitted into an analog waveform signal using the modulation =
modes of the apparatus 400 so as to generate the audio data frame streams.
The audio data to be transmitted may be identification data in a fixed format or transmission data containing a variable content. The identification data in the fixed format can identify the modulation modes used by the audio data to be transmitted; the transmission data containing the variable content are various data commonly required to be transmitted, such as user information, trade information and so on.
In addition, the modulating module 401 modulates in following manners: an amplitude modulation, a frequency modulation, a carrier modulation or a subcarrier modulation.
In an embodiment of the present disclosure, a manner of the splicing of the splicing module 402 may be a splicing manner without a time interval or a splicing manner with a time interval.
The splicing is to connect the analog waveforms modulated using different modulation modes together.
With the audio data transmission apparatus 400 for the mobile terminal according to embodiments of the present disclosure, the data interaction between the audio data transmission apparatus 400 and the electronic signature token 500 can be performed rapidly, thus improving the speed of the data interaction and saving time. In addition, the degree of distortion of the data during the interaction is largely reduced, thus ensuring the quality of the data interaction.
An electronic signature token 500 according to embodiments of a fourth aspect of the present disclosure will be described in the following with reference to Fig. 5.
As shown in Fig. 5, the electronic signature token 500 includes a modulating module 501, a splicing module 502 and a transmitting module 503.
The modulating module 501 is configured to modulate audio data to be transmitted using at least two modulation modes to generate audio data frame streams in the at least two modulation modes. The splicing module 502 is configured to splice the audio data frame streams in the at least two modulation modes into an audio data stream. The transmitting module 503 is configured to transmit the audio data stream to a mobile terminal 404 in one transmission via an audio interface 504 of the electronic signature token 500.
In an embodiment of the present disclosure, the transmitting module 503 is further configured to transmit the audio data stream to the mobile terminal 404 in one transmission in a same time reference frame via the audio interface 504 of the electronic signature token 500.
The same time reference frame means that a length of a start moment and/or an end moment = CA 02875232 2014-11-28 at a time period of each modulation waveform with respect to a predetermined reference moment is predetermined.
In another embodiment of the present disclosure, the transmitting module 503 is further configured to transmit the audio data stream to the mobile terminal 404 in one transmission in different time reference frames via the audio interface 504 of the electronic signature token 500.
The different time reference frames are frames in which a start moment of each modulation waveform is obtained according to a synchronization head information.
Certainly, when the audio data to be transmitted are modulated into the audio data frame streams, it is further required to generate the synchronization head information which is configured to indicate the start moment of each modulation waveform, and to add the generated synchronization head information into the audio data frame streams, such that it is ensured that the start moment of each modulation waveform can be obtained.
In an embodiment of the present disclosure, the modulating module 501 is further configured to modulate the audio data to be transmitted into an analog waveform signal using the modulation modes of the electronic signature token 500 so as to generate the audio data frame streams.
The audio data to be transmitted may be identification data in a fixed format or transmission data containing a variable content. The identification data in the fixed format can identify the modulation modes used by the audio data to be transmitted; the transmission data containing the variable content are various data commonly required to be transmitted, such as user information, trade information and so on.
Moreover, the modulating module 501 modulates in following manners: an amplitude modulation, a frequency modulation, a carrier modulation or a subcarrier modulation.
In addition, in an embodiment of the present disclosure, the splicing module 502 splices the audio data frame streams in a splicing manner without a time interval or a splicing manner with a time interval. The splicing is to connect the analog waveforms modulated using different modulation modes together.
With the electronic signature token 500 according to embodiments of the present disclosure, the data interaction between the mobile terminal 404 and the electronic signature token 500 can be performed rapidly, thus improving the data quantity during the data interaction and saving time. In addition, the degree of distortion of the data during a subsequent interaction is largely reduced, thus ensuring the quality of the data interaction.
, ..o , . CA 02875232 2014-11-28 Any procedure or method described in the flow charts or described in any other way herein may be understood to comprise one or more modules, portions or parts for storing executable codes that realize particular logic functions or procedures.
Moreover, advantageous embodiments of the present disclosure comprises other implementations in which the order of execution is different from that which is depicted or discussed, including executing functions in a substantially simultaneous manner or in an opposite order according to the related functions. This should be understood by those skilled in the art to which embodiments of the present disclosure belong.
The logic and/or step described in other manners herein or shown in the flow chart, for example, a particular sequence table of executable instructions for realizing the logical function, may be specifically achieved in any computer readable medium to be used by the instruction execution system, device or equipment (such as the system based on computers, the system comprising processors or other systems capable of obtaining the instruction from the instruction execution system, device and equipment and executing the instruction), or to be used in combination with the instruction execution system, device and equipment. As to the specification, "the computer readable medium" may be any device adaptive for including, storing, communicating, propagating or transferring programs to be used by or in combination with the instruction execution system, device or equipment. More specific examples of the computer readable medium comprise but are not limited to: an electronic connection (an electronic device) with one or more wires, a portable computer enclosure (a magnetic device), a random access memory (RAM), a read only memory (ROM), an erasable programmable read-only memory (EPROM or a flash memory), an optical fiber device and a portable compact disk read-only memory (CDROM). In addition, the computer readable medium may even be a paper or other appropriate medium capable of printing programs thereon, this is because, for example, the paper or other appropriate medium may be optically scanned and then edited, decrypted or processed with other appropriate methods when necessary to obtain the programs in an electric manner, and then the programs may be stored in the computer memories.
It is understood that each part of the present disclosure may be realized by the hardware, software, firmware or their combination. In the above embodiments, a plurality of steps or methods may be realized by the software or firmware stored in the memory and executed by the appropriate instruction execution system. For example, if it is realized by the hardware, ,=== = CA 02875232 2014-11-28 likewise in another embodiment, the steps or methods may be realized by one or a combination of the following techniques known in the art: a discrete logic circuit having a logic gate circuit for realizing a logic function of a data signal, an application-specific integrated circuit having an appropriate combination logic gate circuit, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.
Those skilled in the art shall understand that all or parts of the steps in the above exemplifying method of the present disclosure may be achieved by commanding the related hardware with programs. The programs may be stored in a computer readable storage medium, and the programs comprise one or a combination of the steps in the method embodiments of the present disclosure when run on a computer.
In addition, each function cell of the embodiments of the present disclosure may be integrated in a processing module, or these cells may be separate physical existence, or two or more cells are integrated in a processing module. The integrated module may be realized in a form of hardware or in a form of software function modules. When the integrated module is realized in a form of software function module and is sold or used as a standalone product, the integrated module may be stored in a computer readable storage medium.
The storage medium mentioned above may be read-only memories, magnetic disks or CD, etc.
Reference throughout this specification to "an embodiment," "some embodiments," "an example," "a specific example," or "some examples," means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure.
The appearances of the phrases throughout this specification are not necessarily referring to the same embodiment or example of the present disclosure. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
Although explanatory embodiments have been shown and described, it would be appreciated by those skilled in the art that the above embodiments cannot be construed to limit the present disclosure, and changes, alternatives, and modifications can be made in the embodiments without departing from spirit, principles and scope of the present disclosure.
With the audio data transmission method according to embodiments of the present disclosure, the audio data frame streams in different modulation modes can be spliced into the audio data stream so as to perform the data interaction in one transmission, thus greatly improving the data quantity in one data interaction. In addition, after two communicating parties select an available modulation mode in which the data transmission is performed, the degree of distortion of the interactive data is largely reduced, thus ensuring the quality of the data interaction.
An audio data transmission system according to embodiments of a second aspect of the present disclosure will be described with reference to Figs. 2 and 3.
As shown in Fig. 2, the audio data transmission system includes a first device 201 and a second device 202, and the first device 201 is connected with the second device 202 via an audio interface 203. The first device 201 modulates audio data to be transmitted using at least two modulation modes to generate audio data frame streams in the at least two modulation modes, splices the audio data frame streams in the at least two modulation modes into an audio data stream and transmits the audio data stream to the second device 202 in one transmission via the audio interface 203.
In an embodiment of the present disclosure, the first device 201 is further configured to transmit the audio data stream to the second device 202 in one transmission in a same time reference frame via the audio interface 203.
The same time reference frame means that a length of a start moment and/or an end moment at a time period of each modulation waveform with respect to a predetermined reference moment is predetermined.
In another embodiment of the present disclosure, the first device 201 is further configured to transmit the audio data stream to the second device 202 in one transmission in different time reference frames via the audio interface 203.
The different time reference frames are frames in which a start moment of each modulation waveform is obtained according to a synchronization head information.
Certainly, when the audio data to be transmitted are modulated into the audio data frame streams, it is further required to =
= CA 02875232 2014-11-28 =
generate the synchronization head information which is configured to indicate the start moment of each modulation waveform, and to add the generated synchronization head information into the audio data frame streams, such that it is ensured that the start moment of each modulation waveform can be obtained.
In an embodiment of the present disclosure, the audio data to be transmitted are identification data in a fixed format or transmission data containing a variable content. The identification data in the fixed format can identify the modulation modes used by the audio data to be transmitted; the transmission data containing the variable content are various data commonly required to be transmitted, such as user information, trade information and so on.
Moreover, the audio data frame streams are generated by modulating the audio data to be transmitted into an analog waveform signal using the modulation modes of the first device 201 so as to generate the audio data frame streams.
In the embodiment of the present disclosure, the modulation mode may be an amplitude modulation, a frequency modulation, a carrier modulation or a subcarrier modulation.
Specifically, in an embodiment of the present disclosure, as shown in Fig. 3, the first device 201 may modulate the audio data to be transmitted using four modulation modes respectively to generate audio data frame streams A, B, C and D in the four modulation modes, in which modulation modes corresponding to the audio data frame streams A, B, C and D
are different from each other.
The first device 201 splices the above audio data frame streams A, B, C and D
in the four modulation modes into the audio data stream, and thus it is convenient for the audio data to be transmitted in one transmission, the number of times of transmission is reduced, the probability of a data distortion is decreased and the data quantity during the data interaction is also improved.
In an embodiment of the present disclosure, a manner of the splicing may be a splicing manner without a time interval or a splicing manner with a time interval.
In an embodiment of the present disclosure, the first device 201 may be a mobile terminal and the second device 202 may be an electronic signature token.
With the audio data transmission system according to embodiments of the present disclosure, the data interaction between the first device 201 and the second device 202 can be performed rapidly, and thus the data quantity during the data interaction is improved.
In addition, after two communicating parties select an available modulation mode in which the data transmission is =
=
performed, the distortion and the degree of distortion of the interactive data are largely reduced, thus ensuring and improving the quality of the data interaction.
An audio data transmission apparatus 400 for a mobile terminal according to embodiments of a third aspect of the present disclosure will be described in the following with reference to Fig. 4.
As shown in Fig. 4, the apparatus 400 is used in a mobile terminal 404 and includes a modulating module 401, a splicing module 402 and a transmitting module 403.
The modulating module 401 is configured to modulate audio data to be transmitted using at least two modulation modes to generate audio data frame streams in the at least two modulation modes. The splicing module 402 is configured to splice the audio data frame streams in the at least two modulation modes into an audio data stream. The transmitting module 403 is configured to transmit the audio data stream to an electronic signature token 500 in one transmission via an audio interface 405 of the mobile terminal 404.
In an embodiment of the present disclosure, the transmitting module 403 is further configured to transmit the audio data stream to the electronic signature token 500 in one transmission in a same time reference frame via the audio interface 405 of the mobile terminal 404.
The same time reference frame means that a length of a start moment and/or an end moment at a time period of each modulation waveform with respect to a predetermined reference moment is predetermined.
In another embodiment of the present disclosure, the transmitting module 403 is further configured to transmit the audio data stream to the electronic signature token 500 in one transmission in different time reference frames via the audio interface 405 of the mobile terminal 404.
The different time reference frames are frames in which a start moment of each modulation waveform is obtained according to a synchronization head information.
Certainly, when the audio data to be transmitted are modulated into the audio data frame streams, it is further required to generate the synchronization head information which is configured to indicate the start moment of each modulation waveform, and to add the generated synchronization head information into the audio data frame streams, such that it is ensured that the start moment of each modulation waveform can be obtained.
In an embodiment of the present disclosure, the modulating module 401 is further configured to modulate the audio data to be transmitted into an analog waveform signal using the modulation =
modes of the apparatus 400 so as to generate the audio data frame streams.
The audio data to be transmitted may be identification data in a fixed format or transmission data containing a variable content. The identification data in the fixed format can identify the modulation modes used by the audio data to be transmitted; the transmission data containing the variable content are various data commonly required to be transmitted, such as user information, trade information and so on.
In addition, the modulating module 401 modulates in following manners: an amplitude modulation, a frequency modulation, a carrier modulation or a subcarrier modulation.
In an embodiment of the present disclosure, a manner of the splicing of the splicing module 402 may be a splicing manner without a time interval or a splicing manner with a time interval.
The splicing is to connect the analog waveforms modulated using different modulation modes together.
With the audio data transmission apparatus 400 for the mobile terminal according to embodiments of the present disclosure, the data interaction between the audio data transmission apparatus 400 and the electronic signature token 500 can be performed rapidly, thus improving the speed of the data interaction and saving time. In addition, the degree of distortion of the data during the interaction is largely reduced, thus ensuring the quality of the data interaction.
An electronic signature token 500 according to embodiments of a fourth aspect of the present disclosure will be described in the following with reference to Fig. 5.
As shown in Fig. 5, the electronic signature token 500 includes a modulating module 501, a splicing module 502 and a transmitting module 503.
The modulating module 501 is configured to modulate audio data to be transmitted using at least two modulation modes to generate audio data frame streams in the at least two modulation modes. The splicing module 502 is configured to splice the audio data frame streams in the at least two modulation modes into an audio data stream. The transmitting module 503 is configured to transmit the audio data stream to a mobile terminal 404 in one transmission via an audio interface 504 of the electronic signature token 500.
In an embodiment of the present disclosure, the transmitting module 503 is further configured to transmit the audio data stream to the mobile terminal 404 in one transmission in a same time reference frame via the audio interface 504 of the electronic signature token 500.
The same time reference frame means that a length of a start moment and/or an end moment = CA 02875232 2014-11-28 at a time period of each modulation waveform with respect to a predetermined reference moment is predetermined.
In another embodiment of the present disclosure, the transmitting module 503 is further configured to transmit the audio data stream to the mobile terminal 404 in one transmission in different time reference frames via the audio interface 504 of the electronic signature token 500.
The different time reference frames are frames in which a start moment of each modulation waveform is obtained according to a synchronization head information.
Certainly, when the audio data to be transmitted are modulated into the audio data frame streams, it is further required to generate the synchronization head information which is configured to indicate the start moment of each modulation waveform, and to add the generated synchronization head information into the audio data frame streams, such that it is ensured that the start moment of each modulation waveform can be obtained.
In an embodiment of the present disclosure, the modulating module 501 is further configured to modulate the audio data to be transmitted into an analog waveform signal using the modulation modes of the electronic signature token 500 so as to generate the audio data frame streams.
The audio data to be transmitted may be identification data in a fixed format or transmission data containing a variable content. The identification data in the fixed format can identify the modulation modes used by the audio data to be transmitted; the transmission data containing the variable content are various data commonly required to be transmitted, such as user information, trade information and so on.
Moreover, the modulating module 501 modulates in following manners: an amplitude modulation, a frequency modulation, a carrier modulation or a subcarrier modulation.
In addition, in an embodiment of the present disclosure, the splicing module 502 splices the audio data frame streams in a splicing manner without a time interval or a splicing manner with a time interval. The splicing is to connect the analog waveforms modulated using different modulation modes together.
With the electronic signature token 500 according to embodiments of the present disclosure, the data interaction between the mobile terminal 404 and the electronic signature token 500 can be performed rapidly, thus improving the data quantity during the data interaction and saving time. In addition, the degree of distortion of the data during a subsequent interaction is largely reduced, thus ensuring the quality of the data interaction.
, ..o , . CA 02875232 2014-11-28 Any procedure or method described in the flow charts or described in any other way herein may be understood to comprise one or more modules, portions or parts for storing executable codes that realize particular logic functions or procedures.
Moreover, advantageous embodiments of the present disclosure comprises other implementations in which the order of execution is different from that which is depicted or discussed, including executing functions in a substantially simultaneous manner or in an opposite order according to the related functions. This should be understood by those skilled in the art to which embodiments of the present disclosure belong.
The logic and/or step described in other manners herein or shown in the flow chart, for example, a particular sequence table of executable instructions for realizing the logical function, may be specifically achieved in any computer readable medium to be used by the instruction execution system, device or equipment (such as the system based on computers, the system comprising processors or other systems capable of obtaining the instruction from the instruction execution system, device and equipment and executing the instruction), or to be used in combination with the instruction execution system, device and equipment. As to the specification, "the computer readable medium" may be any device adaptive for including, storing, communicating, propagating or transferring programs to be used by or in combination with the instruction execution system, device or equipment. More specific examples of the computer readable medium comprise but are not limited to: an electronic connection (an electronic device) with one or more wires, a portable computer enclosure (a magnetic device), a random access memory (RAM), a read only memory (ROM), an erasable programmable read-only memory (EPROM or a flash memory), an optical fiber device and a portable compact disk read-only memory (CDROM). In addition, the computer readable medium may even be a paper or other appropriate medium capable of printing programs thereon, this is because, for example, the paper or other appropriate medium may be optically scanned and then edited, decrypted or processed with other appropriate methods when necessary to obtain the programs in an electric manner, and then the programs may be stored in the computer memories.
It is understood that each part of the present disclosure may be realized by the hardware, software, firmware or their combination. In the above embodiments, a plurality of steps or methods may be realized by the software or firmware stored in the memory and executed by the appropriate instruction execution system. For example, if it is realized by the hardware, ,=== = CA 02875232 2014-11-28 likewise in another embodiment, the steps or methods may be realized by one or a combination of the following techniques known in the art: a discrete logic circuit having a logic gate circuit for realizing a logic function of a data signal, an application-specific integrated circuit having an appropriate combination logic gate circuit, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.
Those skilled in the art shall understand that all or parts of the steps in the above exemplifying method of the present disclosure may be achieved by commanding the related hardware with programs. The programs may be stored in a computer readable storage medium, and the programs comprise one or a combination of the steps in the method embodiments of the present disclosure when run on a computer.
In addition, each function cell of the embodiments of the present disclosure may be integrated in a processing module, or these cells may be separate physical existence, or two or more cells are integrated in a processing module. The integrated module may be realized in a form of hardware or in a form of software function modules. When the integrated module is realized in a form of software function module and is sold or used as a standalone product, the integrated module may be stored in a computer readable storage medium.
The storage medium mentioned above may be read-only memories, magnetic disks or CD, etc.
Reference throughout this specification to "an embodiment," "some embodiments," "an example," "a specific example," or "some examples," means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure.
The appearances of the phrases throughout this specification are not necessarily referring to the same embodiment or example of the present disclosure. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
Although explanatory embodiments have been shown and described, it would be appreciated by those skilled in the art that the above embodiments cannot be construed to limit the present disclosure, and changes, alternatives, and modifications can be made in the embodiments without departing from spirit, principles and scope of the present disclosure.
Claims (7)
1. An audio data transmission method, comprising:
modulating by a first device audio data to be transmitted using at least two modulation modes to generate audio data frame streams in the at least two modulation modes;
splicing by the first device the audio data frame streams in the at least two modulation modes into an audio data stream; and transmitting the audio data stream to a second device in one transmission in a same time reference frame via an audio interface of the first device.
modulating by a first device audio data to be transmitted using at least two modulation modes to generate audio data frame streams in the at least two modulation modes;
splicing by the first device the audio data frame streams in the at least two modulation modes into an audio data stream; and transmitting the audio data stream to a second device in one transmission in a same time reference frame via an audio interface of the first device.
2. The method according to claim 1, wherein the same time reference frame means that a length of a start moment and/or an end moment at a time period of each modulation waveform with respect to a predetermined reference moment is predetermined.
3. The method according to claim 1 or 2, wherein the audio data to be transmitted are identification data in a fixed format or transmission data containing a variable content.
4. The method according to any one of clams 1-3, wherein the audio data frame streams are generated by:
modulating the audio data to be transmitted into an analog waveform signal using the modulation modes of the first device so as to generate the audio data frame streams.
modulating the audio data to be transmitted into an analog waveform signal using the modulation modes of the first device so as to generate the audio data frame streams.
5. The method according to any one of claims 1-4, wherein the modulation mode includes: an amplitude modulation, a frequency modulation, a carrier modulation or a subcarrier modulation.
6. The method according to any one of claims 1-4, wherein a manner of the splicing is a splicing manner without a time interval or a splicing manner with a time interval.
7. The method according to any one of claims 1-4, wherein the first device is a mobile terminal and the second device is an electronic signature token.
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| US5899969A (en) * | 1997-10-17 | 1999-05-04 | Dolby Laboratories Licensing Corporation | Frame-based audio coding with gain-control words |
| US6590944B1 (en) * | 1999-02-24 | 2003-07-08 | Ibiquity Digital Corporation | Audio blend method and apparatus for AM and FM in band on channel digital audio broadcasting |
| US7124425B1 (en) * | 1999-03-08 | 2006-10-17 | Immersion Entertainment, L.L.C. | Audio/video system and method utilizing a head mounted apparatus with noise attenuation |
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| CN101340415B (en) * | 2008-06-30 | 2012-07-04 | 北京新岸线移动通信技术有限公司 | Multi-path multiplexing apparatus and method for OFDM system |
| CN202940816U (en) * | 2012-06-16 | 2013-05-15 | 天地融科技股份有限公司 | Audio data transmission system, transmission device and electronic signing tool |
| CN102752058B (en) * | 2012-06-16 | 2013-10-16 | 天地融科技股份有限公司 | Audio data transmission system, audio data transmission device and electronic sign tool |
| CN202940815U (en) * | 2012-06-16 | 2013-05-15 | 天地融科技股份有限公司 | Audio data transmission system, audio data transmission device and electronic sign tool |
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| CN102739587B (en) * | 2012-06-16 | 2014-05-21 | 天地融科技股份有限公司 | Audio data transmission method |
| CN102739320B (en) * | 2012-06-16 | 2014-11-05 | 天地融科技股份有限公司 | Method, system and device for transmitting audio data and electronic signature tool |
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