TW201328226A - Method and device for information transmission - Google Patents

Abstract

The present invention relates to a method and device for information transmission. The method for information transmission includes: processing the data information to be transmitted, generating magnetic field data or an audio file, and generating a driving signal using the magnetic field data or the audio file, and then transmitting the magnetic field data or the audio file as a first magnetic signal using an electroacoustic transducer device driven by the drive signal. The method and device for information transmission of the present invention transmit the data with an external device using the magnetic signal transmission function of the electroacoustic transducer device in the information transmission device and/or the magnetic signal reception function of an acoustical-electrical transducer device. For the information transmission device with an electroacoustic transducer device and/or an acoustical-electrical transducer device, no modification of the hardware of the device is required; operation is easy and cost is low.

Description

Information transmission method and device

The present invention relates to the field of communications, and in particular, to an information transmission method and apparatus.

With the popularization of electronic devices, applications that use electronic devices as carriers to perform various functions have become more and more abundant. For example, using a mobile terminal to watch television, using a mobile terminal as a data machine for networking, using a mobile terminal for short-range communication to complete a small mobile payment, and using a mobile terminal to transmit an electronic ticket, a coupon, or the like.

In order to enable the electronic device to have the corresponding function, it is necessary to install a corresponding communication module on the hardware and software of the electronic device. For example, a magnetic signal transmitting module, a magnetic signal receiving module, a radio frequency communication module, a wireless local area network communication module, a Bluetooth communication module, an NFC short-range communication module, and the like are installed in the mobile terminal.

The invention provides an information transmission method and device, which solves the problem that in the prior art, in order to make the electronic device have the corresponding function, the hardware of the electronic device needs to be modified, resulting in cumbersome operation and high cost.

In order to solve the above technical problems, the present invention proposes the following technical solutions:

An information transmission method includes: processing a data information to be processed, generating a magnetic field data or an audio file; generating a driving signal by using a magnetic field data or an audio file; driving the electro-acoustic conversion device by using a driving signal, and the magnetic field data or the audio file is first magnetic The signal is sent out.

In an embodiment, the information transmission method further includes: receiving an external second magnetic signal by using the acoustic-electric conversion device, and converting the second magnetic signal into the second electrical signal; and processing the second electrical signal to obtain an external transmission. Information. In an embodiment, the information transmission method further includes: determining, according to the received second magnetic signal, whether to establish a radio frequency communication connection with the sender of the second magnetic signal, and if the determination result is yes, establishing an RF communication connection and passing the radio frequency Channel transmission data information.

An information transmission method includes: receiving, by an acoustic-electrical conversion device, a first magnetic signal transmitted according to the information transmission method, and converting the first magnetic signal into a first electrical signal; processing the first electrical signal to obtain an external transmission Information.

In an embodiment, the information transmission method further includes: determining, according to the received first magnetic signal, whether to establish a radio frequency communication connection with the sender of the first magnetic signal, and if the determination result is yes, establishing an RF communication connection and passing the radio frequency Channel transmission data information. Or the information transmission method further includes: generating the information to be transmitted according to the received first magnetic signal; processing the information to be transmitted to generate a magnetic field data or an audio file; generating a driving signal by using the magnetic field data or the audio file; and driving the driving signal by using the driving signal The sound converting device transmits the magnetic field data or the audio file with the second magnetic signal. In an embodiment, before the magnetic field data or audio file is sent by the second magnetic signal by using the driving signal to drive the electro-acoustic conversion device, the method further includes: determining, according to the received first magnetic signal, whether to allow the first magnetic signal The sender establishes a radio frequency communication connection, and if the judgment result is allowed, the step of transmitting the second magnetic signal is entered.

An information transmission device includes: a first processing module, configured to process data information to be processed, to generate a magnetic field data or an audio file; and a first driving module, configured to generate a driving signal by using magnetic field data or an audio file; The sound converting device is configured to send the magnetic field data or the audio file as the first magnetic signal under the driving of the driving signal.

In an embodiment, the information transmission device further includes a first acoustic electricity conversion device and a fourth processing module, wherein the first acoustic electricity conversion device is configured to receive the external second magnetic signal and convert the second magnetic signal The second processing module is configured to process the second electrical signal to obtain externally transmitted data information. In an embodiment, the information transmission device further includes a first control module and a first radio frequency module; the first control module is configured to determine whether the second magnetic signal is received by the first acoustic/electrical conversion device The sender of the magnetic signal establishes a radio frequency communication connection; the first radio frequency module is configured to determine, in the first control module, a radio frequency communication connection with the sender of the second magnetic signal, and transmit the data information through the radio frequency channel.

An information transmission device includes: a second acoustic-electrical conversion device, configured to receive a first magnetic signal transmitted by a first electro-acoustic conversion device in the information transmission device, and convert the first magnetic signal into a first electrical signal; The second processing module is configured to process the first electrical signal to obtain externally transmitted data information.

In an embodiment, the information transmission device further includes a second control module and a second RF module. The second control module is configured to determine whether the first magnetic signal is compared with the first magnetic signal received by the second acoustic electricity conversion device. The sender of the signal establishes a radio frequency communication connection; the second radio frequency module is configured to determine the result of the second control module as a yes, establish a radio frequency communication connection with the sender of the first magnetic signal, and transmit the data information through the radio frequency channel. Or the information transmission device further includes a third control module, a third processing module, a second driving module, and a second electro-acoustic conversion device, wherein: the third control module is configured to generate, according to the received first magnetic signal Transmitting data information; the third processing module is configured to process the data information to be transmitted generated by the third control module to generate a magnetic field data or an audio file; and the second driving module is configured to generate a driving signal by using the magnetic field data or the audio file; The second electro-acoustic conversion device is configured to transmit the magnetic field data or the audio file as the second magnetic signal under the driving of the driving signal. In an embodiment, the third control module is further configured to determine, according to the first magnetic signal, whether to allow a radio frequency communication connection with the sender of the first magnetic signal, and if the determination result is allowed, enter the second magnetic signal. Send step.

The information transmission method and device of the present invention generally employs an electro-acoustic conversion device and/or an acoustic-electric conversion device when the information transmission device currently used on the market, and the electro-acoustic conversion device (acoustic-electric conversion device) emits sound (acoustic) The magnetic flux leakage is usually generated. Therefore, the present invention transmits the data information by means of the magnetic leakage generated by the electroacoustic conversion device (acoustic electric conversion device) carried by the information transmission device itself, without the need for information transmission. Any changes to the hardware of the device are simple and inexpensive. At the same time, the magnetic signal is used as the carrier for data information transmission, the communication distance is more controllable, and it is less susceptible to interference than electromagnetic waves and sounds, and has great advantages in short-range communication.

The main idea of the present invention is to use a magnetic signal generated by an electroacoustic conversion device (for example, a speaker) generally possessed by an information transmission device to transmit data information as a carrier; and an acoustic-electric conversion device generally used in an information transmission device (for example, a mobile terminal) The magnetic signal received by (for example, a microphone) is the carrier for receiving information information. Specifically, the magnetic leakage is generated by the electroacoustic conversion device to transmit data information and the magnetic leakage generated by the acoustic-electrical conversion device during sound collection to receive data information.

The information transmission device of the present invention may be a mobile terminal such as a mobile phone, a digital camera, a digital camera, a portable multimedia player, a handheld game console, a tablet computer, a notebook computer, or the like. The invention can not make any modification to the hardware of the mobile terminal, so that all mobile terminals can perform short-range communication, in particular, the most basic or relatively low-end mobile terminal without the short-range communication module can also be The ability to communicate in close proximity is simple and inexpensive. Moreover, the magnetic signal is used as the carrier for information transmission, the communication distance is more controllable, and it is less susceptible to interference than electromagnetic waves and sounds, and thus has great advantages in short-range communication.

The principles and features of the present invention are described in the following with reference to the accompanying drawings.

Fig. 1 is a flow chart showing an information transmission method in the first embodiment of the present invention. The information transmission method of the embodiment can realize one-way transmission of data information from the information transmission device to the outside of the information transmission device, and the transmission distance can be controlled, thereby enabling the information transmission device to perform short-range communication within the set range.

As shown in FIG. 1, in the embodiment, the flow of the information transmission method includes:

In step 101, the information to be transmitted is processed to generate magnetic field data or audio files; and the magnetic field data is data in a magnetic field format.

The information to be transmitted may be short information materials, audio materials, still image data, and the like.

The conversion of information to be transmitted into magnetic field data mainly includes the following processes:
(a1) magnetic signal framing;
(a2) magnetic channel transmission coding;
(a3) Magnetic signal modulation.

In summary, magnetic field data is generated by magnetic signal framing, magnetic signal transmission coding, and modulation.

The waveform modulated by the magnetic field data may be a sawtooth wave, a sine wave, a pulse wave or the like. The magnetic field data is modulated at a rate of 20 Hz to 20 kHz.

Magnetic field data can be converted to audio data and stored in an audio file format. The audio file is easy to store and can be played through various players, making it easy to operate on the interface of mobile terminals such as mobile phones.

The process of converting the information to be transmitted into an audio file is:
(b1) using the magnetic field data generated above as a sample of audio data, and quantizing and encoding the audio data sample;
(b2) The quantized and encoded data can be compressed and the like; this step is a non-essential step;
(b3) Add the header and the end of the file to the compressed signal, and store it as an audio file according to the storage format of the audio file, that is, the audio file is obtained.

In summary, the audio file is obtained by quantizing and encoding the magnetic field data and then storing it according to the storage format of the audio file.

The audio file can be a sound waveform file, a third generation audio file compression format, and the like.

Among them, the most basic coding method mentioned above is the natural binary coding mode. In particular, when converting the data to be transmitted into an audio file, the encoding mode may generally be pulse code modulation, differential pulse code modulation, adaptive differential pulse code modulation, sub-band coding, or the like. The pulse code modulation can be linear pulse code modulation or log pulse code modulation.

In step 101, the data information to be transmitted may be combined according to a certain frame format definition. The information to be transmitted can be combined into fixed-length frames or combined into non-fixed-length frames. For a fixed-length frame, the information to be transmitted can be divided into multiple blocks, and the different blocks are encoded by using an encoding method suitable for transmission in the magnetic channel. Then, a plurality of block-encoded data and some identification frame identifiers form a fixed-length data frame. For non-fixed length frames, a fixed length of data information to be transmitted can be encoded and an identification code added. In the process of combining into frames, the position of the identification code of the frame may or may not be fixed. For fixed-length frames, the identification code can be placed at the beginning of a frame or at the center of a frame. For non-fixed length frames, the identification code is placed at the beginning of a frame. The identification code of the frame can be selected to be unique or non-unique to distinguish different types of frames.

In step 101, some redundancy may be added to the data information to be transmitted to improve the reliability of the magnetic field transmission. In particular, error detection coding or error correction coding may be performed, for example, adding a loop redundancy check code or a convolutional code. and many more.

In step 101, the data information to be transmitted may be synchronously clock encoded. In particular, Manchester encoding or differential Manchester encoding may be employed.

Step 102, generating a driving signal by using the magnetic field data or the audio file generated in step 101;
If the audio file is generated in step 101, the audio file is played by calling the player, and the audio file is decoded to obtain the audio sample data (ie, the magnetic field data), and then the audio sample data is subjected to digital-to-analog conversion and power amplification to generate A driving signal for driving an electroacoustic conversion device (such as a speaker in a mobile terminal) to generate a magnetic signal.

If the magnetic field data is generated in step 101, the magnetic field data is subjected to digital-to-analog conversion and power amplification, and then a driving signal is generated to directly drive the electro-acoustic conversion device to generate a magnetic signal.

The magnetic field data and the audio file can enter the audio channel through the same hardware channel or through different hardware channels, but the basic process is the same, that is, the sample data (audio sample data or magnetic field data) enters the digital mode at a certain rate. The converter converts to an analog signal, performs power amplification, and finally drives an electroacoustic transducer such as a speaker.

When playing the audio file through the player, first remove some file format information, then decompress (not necessary) and other operations, then decode and send the digital-to-analog converter to analog signal, then power amplification, and finally drive the speaker. Electroacoustic conversion device.

Therefore, in general, the information to be transmitted can be converted into magnetic field data, which directly drives the speaker through the hardware channel; or the magnetic field data is converted into an audio file, and the speaker is driven in the manner of playing the audio file. In the end, the two methods are to transmit the data to be transmitted through the leakage magnetic flux when the speaker emits sound.

Step 103: The electroacoustic conversion device is driven by the driving signal generated in step 102 to generate and transmit the first magnetic signal. Preferably, the electroacoustic conversion device includes a coil, and the coil generates a first magnetic signal including the magnetic field data or the audio file and is emitted under the driving of the driving signal.

Driven by the driving signal, on the one hand, the electro-acoustic conversion device generates a first magnetic signal containing data information, and transmits the data information through the first magnetic signal; on the other hand, the electro-acoustic conversion device also generates a sound containing information information. Signal, the information is sent out by voice signal.

The communication distance can be controlled by adjusting the power of the electroacoustic conversion device or by differently modulating the transmission data to achieve communication within a preset close range. The control of the communication rate can be achieved by adjusting the playback rate of the electroacoustic conversion device.

The electroacoustic conversion device can be a speaker, such as a speaker in a cell phone. Since the speaker is an information transmission device, such as a basic component of a mobile terminal, all mobile terminals (mobile phones, etc.) have speakers, and thus the information transmission method of the present invention can be implemented on any mobile terminal. Moreover, it is not necessary to make any modification to the hardware of the mobile terminal, and only the software implementing the information transmission method of the present invention needs to be loaded on the mobile terminal.

FIG. 2 is a block diagram showing the structure of the information transmission device according to the first embodiment of the present invention. The information transmission device of the embodiment can realize one-way transmission of data information from the information transmission device to the outside of the information transmission device, and the transmission distance can be Control, thereby enabling the information transmission device to perform short-range communication within a set range. As shown in FIG. 2, in the embodiment, the information transmission device 20 includes a first processing module 210, a first driving module 220, and a first electro-acoustic conversion device 230. The first processing module 210 is configured to process the data to be transmitted to generate a magnetic field data or an audio file. The first driving module 220 is configured to generate a driving signal by using the magnetic field data or the audio file generated by the first processing module 210. The first electro-acoustic conversion device 230 is configured to transmit the magnetic field data or the audio file as the first magnetic signal under the driving of the driving signal generated by the first driving module 220. The information transmission device 20 shown in Fig. 2 is used to implement the information transmission method shown in Fig. 1.

The first processing module 210 may include a first magnetic field data generating unit configured to perform magnetic signal framing, magnetic signal transmission encoding and modulation on the data to be transmitted, and generate magnetic field data.

The first processing module 210 may further include a first audio file generating unit configured to quantize and encode the magnetic field data and then store the audio file as an audio file according to a storage format of the audio file.

The first electroacoustic conversion device 230 can be a speaker. For example, a speaker in a cell phone is a type of speaker. The first electroacoustic conversion device 230 includes a coil, and the coil generates a first magnetic signal including the magnetic field data or an audio file under the driving of the driving signal, and is emitted.

The information transmission device of the present invention may be a mobile terminal, which can realize one-way transmission of data information from inside the mobile terminal to the outside of the mobile terminal, and the transmission distance is controllable, thereby enabling the mobile terminal to perform short-range communication within the set range. The basic component of the mobile terminal, the leakage magnetic flux generated by the speaker when the sound is emitted, transmits information without any modification to the hardware of the mobile terminal, and can be implemented on all mobile terminals, in particular, it can make the communication module not close. The most basic or relatively low-end mobile terminals of the group are also capable of short-range communication, which is simple and inexpensive. Moreover, the magnetic signal is used as the carrier for information transmission, the communication distance is more controllable, and it is less susceptible to interference than electromagnetic waves and sounds, and thus has great advantages in short-range communication.

FIG. 3 is a flowchart of the information transmission method in the second embodiment of the present invention. The information transmission method in the embodiment can implement one-way transmission of data information from the information transmission device to the information transmission device. As shown in FIG. 3, in the embodiment, the flow of the information transmission device includes:
Step 301: Receive an external first magnetic signal by using an acoustic-electrical conversion device, and convert the first magnetic signal into a first electrical signal;
The external first magnetic signal is sensed by the coil in the acoustic-electric conversion device, and the first magnetic signal is converted into the first electrical signal.

Step 302, processing the first electrical signal converted in step 301 to obtain externally transmitted data information;
The processing of step 302 includes processing such as amplification, noise filtering, demodulation, decoding, and the like. By sequentially amplifying, noise filtering, demodulating, and decoding the electrical signals, the original externally transmitted data information is obtained.

After the externally transmitted data information is obtained in step 302, the data information can be processed by using a control module in the information transmission device. It may further include the following steps:
In step 303, the information obtained in step 302 is sent out by using the interface module. The interface module can be a digital signal interface, and the information transmission device can transmit the information received through the magnetic channel to an external device having a digital signal interface. Most of the devices have a digital signal interface. In this embodiment, the information transmission method shown in FIG. 1 can be used to implement short-range communication between the mobile terminal and the digital signal peripheral device.

FIG. 4 is a block diagram showing the structure of a signal transmission apparatus according to a second embodiment of the present invention. The information transmission apparatus of the embodiment can realize one-way transmission of data information from the information transmission apparatus to the information transmission apparatus. As shown in FIG. 4, in the embodiment, the signal transmission device 40 includes a second acoustic-electric conversion device 410, a second processing module 420, and an interface module 430. The second acousto-electric conversion device 410 is configured to receive an external first magnetic signal and convert the first magnetic signal into a first electrical signal. The second processing module 420 is configured to process the first electrical signal converted by the second acoustic-electrical conversion device 410 to obtain externally transmitted data information. The interface module 430 is configured to send the data information obtained by the second processing module 420. The signal transmission device 40 shown in Fig. 4 is used to implement the signal transmission method shown in Fig. 3. among them,
The interface module 430 can be a digital signal interface.

The processing of the second processing module 420 may be: amplifying, filtering, demodulating, and decoding the first electrical signal to obtain original data information obtained by external transmission; the foregoing processing may be specifically included by the second processing module 420. Second, the information recovery unit performs.

The second acousto-electric conversion device 410 can include a coil for sensing an external magnetic signal and converting the external first magnetic signal into a first electrical signal.

The signal transmission device of this embodiment can transmit information received through the magnetic channel to a device having a digital signal interface, or the signal transmission device of the present invention can enable a device having a digital signal interface to receive information through the magnetic channel. Most of the devices have a digital signal interface. The signal transmission device of this embodiment cooperates with the information transmission device shown in FIG. 2 to enable short-range communication between the mobile terminal and the digital signal peripheral device.

In another embodiment, the signal transmission device 40 shown in FIG. 4 may further include a second control module for processing the data information obtained by the second processing module 420. The second control module and interface module 430 are not required.

FIG. 5 is a flowchart of the information transmission method in the third embodiment of the present invention. The information transmission method shown in this embodiment can realize one-way transmission of data information from the information transmission device to the information transmission device, and can also be The control of radio frequency communication is performed by using the received magnetic signal. As shown in FIG. 5, the process includes:
Step 501: Receive an external first magnetic signal by using an acoustic-electric conversion device, and convert the first magnetic signal into a first electrical signal;
Step 502: Determine, according to the received first magnetic signal, whether to establish a radio frequency communication connection with the sender of the first magnetic signal. If the determination result is yes, proceed to step 503, otherwise the process ends.
Step 503: Establish a radio frequency communication connection with the sender of the first magnetic signal, and transmit the data information through the radio frequency channel.

Step 502 includes, but is not limited to, the three modes listed below:
The first method determines whether the distance between the first electrical signal converted by the external first magnetic signal received in step 501 and the sender of the first magnetic signal is within a preset range, and if it is within a preset range, And establishing a radio frequency communication connection with the sender of the first magnetic signal, and transmitting the data information through the radio frequency channel;
Manner 2: processing the first electrical signal converted in step 501 to obtain externally transmitted data information; authenticating the identification information in the data information, and if the authentication passes, the first magnetic signal is The sender establishes an RF communication connection and transmits data information through the RF channel.
The third method is to determine, according to the strength of the first electrical signal converted by the first magnetic signal received in step 501, whether the distance between the sender and the sender of the first magnetic signal is within a preset range, if it is within a preset range, And processing the electrical signal converted in step 501 to obtain externally transmitted data information, and authenticating the identification information in the data information, and if the authentication passes, establishing a radio frequency with the sender of the first magnetic signal Communication connection and transmission of data information through the RF channel.

FIG. 6 is a block diagram showing the structure of a signal transmission apparatus according to a third embodiment of the present invention. The signal transmission apparatus of the embodiment can realize one-way transmission of data information from the information transmission apparatus to the information transmission apparatus, and can also utilize The received magnetic signal is controlled by radio frequency communication. As shown in FIG. 6, in the embodiment, the signal transmission device 60 includes a second acoustic-electric conversion device 610, a second processing module 620, a second control module 630, and a second RF module 640. The signal transmission device 60 is shown to implement the signal transmission method shown in FIG. among them,
The second acousto-electric conversion device 610 is configured to receive the external first magnetic signal and convert the first magnetic signal into the first electrical signal.

The second processing module 620 is configured to process the first electrical signal converted by the second acoustic-electrical conversion device 610 to obtain externally transmitted data information, and transmit the data information to the second control module 630. The processing of the second processing module 620 may be: amplifying, filtering, demodulating, and decoding the first electrical signal to obtain original data information. The second acousto-electric conversion device 610 includes a coil for sensing an external first magnetic signal and converting the first magnetic signal into a first electrical signal.

The second control module 630 is configured to determine, according to the first magnetic signal received by the second acousto-electric conversion device 610, whether to establish a radio frequency communication connection with the sender of the first magnetic signal.

The second RF module 640 is configured to establish a radio frequency communication connection with the sender of the first magnetic signal and transmit the data information through the radio frequency channel if the determination result of the second control module 630 is YES. The second RF module can be a wireless communication unit that supports fast or high-speed data communication, such as an RFID-SIM module, an RFID-SD module, a Bluetooth module, or a WiFi module.

The second control module 630 may further include a second signal strength determination module and/or a second authentication module; the second signal strength determination module is coupled to the second acousto-electric conversion device 610 for The strength of the first electrical signal converted by the first magnetic signal received by the converting device 610 is determined to be within a preset range between the sender of the first magnetic signal; the second authentication module and the second processing module The group 620 is connected to authenticate the identification information in the data information obtained by the externally transmitted data information processing. If the determination result of the second signal strength judging module is within a preset range, and/or the authentication of the second authentication module passes, the second radio frequency module 640 is established with the sender of the first magnetic signal. RF communication connection and transmission of data information through the RF channel.

The signal transmission device of this embodiment can realize one-way transmission of data information from the outside of the signal transmission device to the information transmission device, and can also perform control of radio frequency communication by using the received magnetic signal.

FIG. 7 is a flowchart of the information transmission method in the fourth embodiment of the present invention. In the information transmission method shown in this embodiment, the data information is transmitted from the first information transmission device to the second signal transmission device in the form of a magnetic signal. The second signal transmission device controls the radio frequency communication by using the received magnetic signal. As shown in FIG. 7, the process includes:
Step 701: The first processing module in the first information transmission device processes the data to be transmitted to generate a magnetic field data or an audio file; the magnetic field data is a data in a magnetic field format.
Step 702: The first driving module in the first information transmission device generates the driving signal by using the magnetic field data or the audio file generated in step 701;
Step 703: The first electro-acoustic conversion device in the first information transmission device generates and transmits the first magnetic signal under the driving of the driving signal. Preferably, the first electroacoustic conversion device includes a coil, and the coil generates a first magnetic signal including the magnetic field data or the audio file under the driving of the driving signal, and is emitted.

Driven by the driving signal, on the one hand, the first electro-acoustic conversion device generates a magnetic signal containing data information, and transmits the data information through the magnetic signal; on the other hand, the electro-acoustic conversion device also generates an audio signal containing the information information. Send the information by voice signal.

Step 704: The second acoustic-electrical conversion device in the second signal transmission device receives the first magnetic signal transmitted by the first electro-acoustic conversion device in the first information transmission device, and converts the first magnetic signal into a first electrical signal.
Step 705: The second control module in the second signal transmission device determines whether to establish a radio frequency communication connection with the first information transmission device according to the received first magnetic signal. If the determination result is yes, the process proceeds to step 706, otherwise the process ends.
Step 706: Establish a radio frequency communication connection with the first radio frequency module of the first information transmission device by using the second radio frequency module, and transmit the data information through the radio frequency channel.

Step 705 includes, but is not limited to, the three modes listed below:
The first method is to determine whether the distance between the first electrical signal converted by the first magnetic signal received in step 704 and the first information transmission device is within a preset range, and if it is within the preset range, the first information is The transmission device establishes an RF communication connection and transmits the data information through the RF channel;
The second processing module in the second signal transmission device processes the first electrical signal converted in step 704 to obtain externally transmitted data information; the second control module in the second information transmission device uses the data The identification information in the information is authenticated. If the authentication is passed, an RF communication connection is established with the first information transmission device, and the data information is transmitted through the RF channel.
The third method is to determine whether the distance between the first electrical signal and the first information transmission device converted by the first magnetic signal received in step 704 is within a preset range, and if the distance is within a preset range, the second signal is transmitted. The second processing module in the device further processes the first electrical signal converted in step 704 to obtain externally transmitted data information, and the second control module in the second signal transmitting device identifies the identity in the data information. The information is authenticated. If the authentication is passed, an RF communication connection is established with the first information transmission device, and the data information is transmitted through the RF channel.

FIG. 8 is a block diagram showing the structure of an information transmission system according to a fourth embodiment of the present invention. The information transmission system includes a first information transmission device 20 and a second signal transmission device 60. The first information transmission device 20 is shown in FIG. The information transmission device; the second signal transmission device 60 is the signal transmission device shown in FIG. The information transmission system shown in FIG. 8 is used to implement the information transmission method shown in FIG.

9A to 9C are flowcharts of the information transmission method in the fifth embodiment of the present invention. In the information transmission method shown in this embodiment, the data information is transmitted from the first information transmission device to the second signal transmission device in the form of magnetic signals. The second signal transmission device controls the radio frequency communication by using the received magnetic signal, and the data information is transmitted from the second signal transmission device to the first information transmission device in the form of a magnetic signal, and the first information transmission device also utilizes the received information. The magnetic signal is controlled by radio frequency communication. As shown in Figures 9A through 9C, the process includes:
Step 901: The first control module in the first information transmission device generates a first request data to be transmitted.
Step 902: The first processing module in the first information transmission device processes the first request data to be transmitted to generate a magnetic field data or an audio file; the magnetic field data is a data in a magnetic field format;
Step 903: The first driving module in the first information transmission device generates the driving signal by using the magnetic field data or the audio file generated in step 902.
Step 904: The first electro-acoustic conversion device in the first information transmission device generates and transmits the first magnetic signal under the driving of the driving signal. Preferably, the first electroacoustic conversion device includes a coil, and the first coil generates a first magnetic signal including the magnetic field data or the audio file and is emitted under the driving of the driving signal.

Driven by the driving signal, on the one hand, the first electro-acoustic converting device generates a magnetic signal containing data information, and transmits the data information through the magnetic signal; on the other hand, the first electro-acoustic converting device also generates a sound containing the information information. Signal, the information is sent out by voice signal.

Step 905, the second acoustic-electrical conversion device of the second signal transmission device receives the first magnetic signal transmitted by the first electro-acoustic conversion device, and converts the first magnetic signal into the first electrical signal;
Step 906: The third control module in the second signal transmission device determines whether the distance between the first information transmission device and the first information transmission device is within a preset range according to the strength of the first electrical signal. If the distance is within the preset range, the process proceeds to step 907. Otherwise the process ends;
Step 907: The second processing module in the second signal transmission device processes the first electrical signal converted by the step 905 to obtain the first request data transmitted by the first information transmission device.
Step 908: The third control module in the second signal transmission device performs authentication according to the identity identification information in the first request data, and if the authentication is passed, allows radio communication with the first information transmission device, and proceeds to step 909. Otherwise the process ends;
Step 909, the third control module in the second signal transmission device generates the second request data (and/or the response data of the first request data);
Step 910: The third processing module in the second signal transmission device processes the second request data (and/or the response data of the first request data) generated in step 909 to generate a magnetic field data or an audio file; Magnetic field format information.
Step 911, the second driving module in the second signal transmitting device generates the driving signal by using the magnetic field data or the audio file generated in step 910;
Step 912: The second electro-acoustic transducing device in the second signal transmitting device generates and transmits the second magnetic signal under the driving of the driving signal. Preferably, the second electroacoustic conversion device includes a coil, and the coil generates a second magnetic signal including the magnetic field data or the audio file under the driving of the driving signal, and is emitted.

Driven by the driving signal, on the one hand, the second electro-acoustic transducing device generates a magnetic signal containing data information, and transmits the data information through the magnetic signal; on the other hand, the second electro-acoustic converting device also generates a sound containing the information information. Signal, the information is sent out by voice signal.

Step 913: The first acoustic-electrical conversion device in the first information transmission device receives the second magnetic signal sent by the second electro-acoustic conversion device, and converts the second magnetic signal into a second electrical signal.
Step 914: The first control module in the first information transmission device determines whether the distance between the second information transmission device and the second information transmission device is within a preset range according to the strength of the second electrical signal. If the distance is within the preset range, the process proceeds to step 915. Otherwise the process ends;
Step 915: The fourth processing module in the first information transmission device processes the second electrical signal converted in step 913 to obtain a second request data (and/or a response to the first request data) transmitted by the second signal transmission device. data);
Step 916: The first control module in the first information transmission device performs authentication according to the identification information in the second request data (and/or the response data of the first request data), and if the authentication passes, the process proceeds to the step. 917, otherwise the process ends;
Step 917: The first RF module in the first information transmission device establishes a radio frequency communication connection with the second RF module in the second signal transmission device, and transmits the data information through the RF channel.

FIG. 10 is a block diagram showing the structure of an information transmission system according to a fifth embodiment of the present invention. The information transmission system includes a first information transmission device 0 and a second signal transmission device 1. The first information transmission device 0 includes a first processing module 01, a first driving module 02, a first electro-acoustic conversion device 03, a first acoustic-electric conversion device 04, a fourth processing module 05, and a first control module 06. And the first RF module 07. The second signal transmission device 1 includes a third processing module 11 , a second driving module 12 , a second electro-acoustic conversion device 13 , a second acoustic-electric conversion device 14 , a second processing module 15 , and a third control module 16 . And a second RF module 17. The information transmission system shown in FIG. 10 is used to implement the information transmission method shown in FIGS. 9A to 9C.

The first control module 06 is configured to generate data information to be transmitted (such as the first request data). The first processing module 01 is configured to process the data to be transmitted to generate a magnetic field data or an audio file. The first driving module 02 is configured to generate a driving signal according to the magnetic field data or the audio file generated by the first processing module 01. The first electro-acoustic conversion device 03 is configured to transmit the magnetic field data or the audio file in the form of a magnetic signal to generate and transmit the first magnetic signal under the driving of the driving signal.

The first acousto-electric conversion device 04 is configured to receive the second magnetic signal sent by the external second electro-acoustic transducing device 13 and convert the second magnetic signal into a second electrical signal. The fourth processing module 05 is configured to process the second electrical signal converted by the first acoustic-electrical conversion device 04, and specifically, the second electrical signal is amplified and noise filtered by the first data information recovery unit included therein. Processing such as demodulation and decoding, obtaining externally transmitted data information, and transmitting the data information to the first control module 06. The first control module 06 is configured to determine whether to establish a radio frequency communication connection with the second signal transmission device 1 according to the second magnetic signal received by the first acousto-electric conversion device 04. The first RF module 07 is configured to establish a radio frequency communication connection with the second radio frequency module 17 and transmit the data information through the radio frequency channel when the determination result of the first control module 06 is YES.

The second acousto-electric conversion device 14 is configured to receive the first magnetic signal sent by the external first electro-acoustic conversion device 03, and convert the first magnetic signal into the first electrical signal. The second processing module 15 is configured to process the first electrical signal converted by the second acoustic-electrical conversion device 14 to obtain externally transmitted data information, and transmit the data information to the third control module 16. The third control module 16 is configured to determine, according to the first magnetic signal received by the second acousto-electrical conversion device 14, whether to allow a radio frequency communication connection with the first information transmission device 0. If the determination result is yes, the third control module 16 The third processing module 11 is configured to process the information to be transmitted to generate a magnetic field, according to the data information to be transmitted (such as the second request data, the response data of the first request data, and the like). Data or audio file. The second driving module 12 is configured to generate a driving signal according to the magnetic field data or the audio file generated by the third processing module 11 . The second electro-acoustic conversion device 13 is configured to transmit the magnetic field data or the audio file as the second magnetic signal under the driving of the driving signal.

The first electroacoustic conversion device 03 and the second electroacoustic conversion device 13 may be speakers. For example, a speaker in a cell phone is a type of speaker. The first electroacoustic conversion device 03 and the second electro-acoustic conversion device 13 include a coil, and the coil generates a magnetic signal containing the magnetic field data or the audio file under the driving of the driving signal, and is emitted.

The first acoustoelectric conversion device 04 and the second acoustoelectric conversion device 14 may be microphones. For example, a microphone in a cell phone. The first acousto-electric conversion device 04 and the second acousto-electric conversion device 14 include a coil for sensing an external magnetic signal and converting the external magnetic signal into an electrical signal.
The first RF module 07 and the second RF module 17 may be wireless communication units that support fast or high-speed data communication, such as an RFID-SIM module, an RFID-SD module, a Bluetooth module, or a WiFi module.

The information transmission method, device and system of the present invention transmit data information by means of magnetic leakage generated by an electroacoustic conversion device (acoustic electric conversion device) carried by the information transmission device itself, without the need for information Any modification of the hardware of the transmission device is simple and inexpensive. At the same time, the magnetic signal is used as the carrier for data information transmission, the communication distance is more controllable, and it is less susceptible to interference than electromagnetic waves and sounds, and has great advantages in short-range communication.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

0, 20. . . Information transmission device, first information transmission device

01, 210. . . First processing module

02, 220. . . First drive module

03,230. . . First electroacoustic conversion device

04. . . First acoustic electricity conversion device

05. . . Fourth processing module

06. . . First control module

07. . . First RF module

1. . . Second signal transmission device

11. . . Third processing module

12. . . Second drive module

13. . . Second electroacoustic conversion device

14, 410, 610. . . Second acoustic electricity conversion device

15, 420, 620. . . Second processing module

16. . . Third control module

17,640. . . Second RF module

40, 60. . . Signal transmission device

430. . . Interface module

630. . . Second control module

101~103, 301~303, 501~503, 701~706, 901~917. . . step

1 is a flowchart of an information transmission method in a first embodiment of the present invention;
Figure 2 is a block diagram showing the structure of an information transmission apparatus in the first embodiment of the present invention;
3 is a flowchart of an information transmission method in a second embodiment of the present invention;
Figure 4 is a block diagram showing the structure of an information transmission apparatus in a second embodiment of the present invention;
5 is a flowchart of an information transmission method in a third embodiment of the present invention;
Figure 6 is a block diagram showing the structure of an information transmission apparatus in a third embodiment of the present invention;
7 is a flowchart of an information transmission method in a fourth embodiment of the present invention;
Figure 8 is a block diagram showing the structure of an information transmission system in a fourth embodiment of the present invention;
9A to 9C are flowcharts showing an information transmission method in a fifth embodiment of the present invention; and Fig. 10 is a block diagram showing the structure of an information transmission system in a fifth embodiment of the present invention.

101~103. . . step

Claims (38)

An information transmission method includes:
Processing the transmitted data information to generate magnetic field data or audio files;
Generating a driving signal by using the magnetic field data or the audio file; and driving the electro-acoustic conversion device by using the driving signal to transmit the magnetic field data or the audio file as the first magnetic signal. For example, in the information transmission method described in claim 1, the information to be transmitted is processed to generate the magnetic field data, specifically:
The magnetic signal framing, magnetic signal transmission coding and modulation are performed on the data information to be transmitted, and the magnetic field data is generated. For example, in the information transmission method described in claim 1, the data to be transmitted is processed to generate the audio file, specifically:
The magnetic signal frame, the magnetic signal transmission coding and modulation are performed on the data information to be transmitted, and the magnetic field data is generated; and the magnetic field data is quantized and encoded, and then stored as the audio file according to the storage format of the audio file. The information transmission method of claim 1, wherein the driving signal is used to drive the electro-acoustic conversion device, and the magnetic field data or the audio file is sent by the first magnetic signal, specifically:
The driving signal is used to drive the coil in the electro-acoustic conversion device, and the first magnetic signal including the magnetic field data or the audio file is generated and emitted. The information transmission method according to claim 1, wherein the electroacoustic conversion device is a speaker. The information transmission method according to any one of claims 1 to 5, further comprising:
Receiving an external second magnetic signal by the acoustic-electrical conversion device, and converting the second magnetic signal into a second electrical signal; and processing the second electrical signal to obtain externally transmitted data information. The information transmission method according to claim 6, wherein the acoustic signal conversion device receives the external second magnetic signal and converts the second magnetic signal into the second electrical signal, specifically:
Using the coil in the acoustic-electric conversion device, the external second magnetic signal is sensed, and the second magnetic signal is converted into the second electrical signal. For example, in the information transmission method described in claim 6, the second electrical signal is processed to obtain externally transmitted data information, specifically:
The second electrical signal is amplified, noise filtered, demodulated, and decoded to obtain externally transmitted data information. The information transmission method according to claim 6, wherein the acoustic-electric conversion device is a microphone. For example, the information transmission method described in Patent Application No. 6 further includes:
And determining, according to the received second magnetic signal, whether to establish a radio frequency communication connection with the sender of the second magnetic signal. If the determination result is yes, establishing a radio frequency communication connection, and transmitting the data information through the radio frequency channel. The information transmission method of claim 10, according to the received second magnetic signal, determining whether to establish a radio frequency communication connection with the sender of the second magnetic signal, specifically:
Determining, according to the strength of the second electrical signal converted by the second magnetic signal, a distance between the sender of the second magnetic signal and a sender of the second magnetic signal, if the distance is within a preset range, establishing a radio frequency communication connection, and Transmitting data information through the RF channel; and/or authenticating the identification information carried by the second magnetic signal; if the authentication is passed, establishing an RF communication connection and transmitting the data information through the RF channel. An information transmission method includes:
Receiving, by the acoustic-electrical conversion device, the first magnetic signal transmitted by the information transmission method according to any one of claims 1 to 11, and converting the first magnetic signal into the first electrical signal; The first electrical signal is processed to obtain externally transmitted data information. The information transmission method according to claim 12, wherein the first magnetic signal transmitted by the information transmission method according to any one of claims 1 to 11 is received by the acoustic-electric conversion device, and Converting the first magnetic signal into the first electrical signal, specifically:
Using the coil in the acoustic-electric conversion device, the first magnetic signal is sensed, and the first magnetic signal is converted into the first electrical signal. For example, in the information transmission method described in claim 12, the first electrical signal is processed to obtain externally transmitted data information, specifically:
The first electrical signal is amplified, noise filtered, demodulated and decoded to obtain externally transmitted data information. The information transmission method according to claim 12, wherein the acoustic-electric conversion device is a microphone. The information transmission method according to any one of claims 12 to 15, further comprising:
And determining, according to the received first magnetic signal, whether to establish a radio frequency communication connection with the sender of the first magnetic signal, and if the determination result is yes, establishing a radio frequency communication connection, and transmitting the data information through the radio frequency channel. The method for transmitting information according to claim 16 is to determine whether to establish a radio frequency communication connection with the sender of the first magnetic signal according to the received first magnetic signal, specifically:
Determining, according to the strength of the first electrical signal converted by the first magnetic signal, a distance between the sender and the sender of the first magnetic signal, if the distance is within a preset range, establishing a radio frequency communication connection, and Transmitting data information through the RF channel; and/or authenticating the identification information carried by the first magnetic signal; if the authentication is passed, establishing an RF communication connection and transmitting the data information through the RF channel. The information transmission method according to any one of claims 12 to 15, further comprising:
Generating information to be transmitted according to the received first magnetic signal;
Processing the information to be transmitted to generate magnetic field data or audio files;
Generating a driving signal by using the magnetic field data or the audio file; and driving the electro-acoustic conversion device by using the driving signal, and transmitting the magnetic field data or the audio file by the second magnetic signal. The information transmission method of claim 18, wherein the driving signal is used to drive the electro-acoustic conversion device, and the magnetic field data or the audio file is sent out by the second magnetic signal, further comprising:
And determining, according to the received first magnetic signal, whether to establish a radio frequency communication connection with the sender of the first magnetic signal, and if the determination result is allowed, entering the sending step of the second magnetic signal. An information transmission device includes:
The first processing module is configured to process the information to be transmitted, and generate a magnetic field data or an audio file;
a first driving module, configured to generate a driving signal by using the magnetic field data or the audio file; and a first electro-acoustic converting device, configured to drive the magnetic field data or the audio file to the first magnetic field by driving the driving signal The signal is sent out. The information processing device of claim 20, wherein the first processing module comprises a first magnetic field data generating unit, configured to perform magnetic signal grouping, magnetic signal transmission encoding and modulation on the data to be transmitted, and generate the Magnetic field data. The information processing device of claim 21, wherein the first processing module further includes a first audio file generating unit, configured to quantize and encode the magnetic field data generated by the first magnetic field data generating unit. The audio file is stored in the storage format of the audio file. The information transmission device of claim 20, wherein the first electroacoustic conversion device includes a coil, and the coil is configured to generate, by the driving signal, the first data including the magnetic field data or the audio file. Magnetic signal and issued. The information transmission device of claim 20, wherein the first electroacoustic conversion device is a speaker. The information transmission device of any one of claims 20 to 24, further comprising a first acoustic-electric conversion device and a fourth processing module, wherein
The first acoustic-electrical conversion device is configured to receive an external second magnetic signal and convert the second magnetic signal into a second electrical signal; and the fourth processing module is configured to process the second electrical signal , get the information information transmitted externally. The information transmission device of claim 25, wherein the first electro-acoustic conversion device includes a coil, the coil is configured to sense the second magnetic signal, and convert the second magnetic signal into the second electrical signal . The information processing device of claim 25, wherein the fourth processing module includes a first data information recovery unit, configured to perform amplification, noise filtering, demodulation, and decoding on the second electrical signal to obtain an external transmission. Information. The information transmission device of claim 25, wherein the first acoustoelectric conversion device is a microphone. The information transmission device of claim 25, further comprising a first control module and a first radio frequency module; the first control module is configured to receive the second magnetic quantity according to the first acoustic electricity conversion device Determining whether a radio frequency communication connection is established with the sender of the second magnetic signal; the first radio frequency module is configured to establish a radio frequency communication with the sender of the second magnetic signal in the first control module Connect and transmit data information through the RF channel. The information transmission device of claim 29, the first control module includes a first signal strength determination module and/or a first authentication module; the first signal strength determination module is configured to Whether the strength of the second electrical signal converted by the second magnetic signal is determined to be within a preset range between the sender of the second magnetic signal; the first authentication module is configured to carry the second magnetic signal Identification information is authenticated. An information transmission device includes:
The second acoustic-electrical conversion device is configured to receive the first magnetic signal transmitted by the first electro-acoustic transducing device in the information transmission device according to any one of claims 20 to 30, and the first magnetic signal is Converting to the first electrical signal; and the second processing module, configured to process the first electrical signal to obtain externally transmitted data information. The information transmission device of claim 31, wherein the second acoustic-electric conversion device includes a coil, the coil is configured to sense the first magnetic signal, and convert the first magnetic signal into the first electrical signal . The information processing device of claim 31, wherein the second processing module includes a second data information recovery unit, configured to perform amplification, noise filtering, demodulation, and decoding on the first electrical signal to obtain an external transmission. Information. The information transmission device of claim 31, wherein the second acoustoelectric conversion device is a microphone. The information transmission device of any one of claims 31 to 34, further comprising a second control module and a second radio frequency module; the second control module is configured to be based on the second acoustic electricity conversion device Receiving the first magnetic signal to determine whether to establish a radio frequency communication connection with the sender of the first magnetic signal; the second radio frequency module is configured to determine that the second control module is yes, and the first magnetic signal The sender establishes an RF communication connection and transmits data information through the RF channel. The information transmission device of claim 35, wherein the second control module comprises a second signal strength determination module and/or a second authentication module; the second signal strength determination module is configured to Whether the strength of the first electrical signal converted by the first magnetic signal is determined to be within a preset range between the sender of the first magnetic signal; and the second authentication module is configured to carry the first magnetic signal Identification information is authenticated. The information transmission device according to any one of claims 31 to 34, further comprising a third control module, a third processing module, a second driving module, and a second electro-acoustic conversion device, wherein:
The third control module is configured to generate information to be transmitted according to the received first magnetic signal;
The third processing module is configured to process the information to be transmitted generated by the third control module to generate a magnetic field data or an audio file;
The second driving module is configured to generate a driving signal by using the magnetic field data or the audio file; and the second electro-acoustic converting device is configured to drive the magnetic field data or the audio file with a second magnetic wave driven by the driving signal The signal is sent out. The information transmission device of claim 37, wherein the third control module is further configured to determine, according to the first magnetic signal, whether to allow a radio frequency communication connection with the sender of the first magnetic signal, if the determination result is If yes, the step of transmitting the second magnetic signal is entered.