KR101645174B1 - System for transmitting and receiving information using sound wave communication - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information transmission / reception system using a sound wave communication, and more particularly, to an information transmission / reception system using sound wave communication having robustness against noise. The information transmission / reception system using the sound wave communication converts the sound wave transmission information in which the radio wave information containing the effective information to be transmitted or the sound wave information for transmitting the sound wave into the sound wave is converted into a sound wave, The information includes at least information of a plurality of pieces of tag information indicating start and end of the valid information and checksum information for verifying the validity of reception of the valid information. And extracts the valid information from the plurality of tag information, reads the checksum information, verifies validity of the separated valid information, and displays the valid information on the display unit.

Description

[0001] The present invention relates to a system for transmitting and receiving information using sound waves,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information transmission / reception system using a sound wave communication, and more particularly, to an information transmission / reception system using sound wave communication having robustness against noise.

Generally, a sound wave communication method has been implemented by transmitting information in an ultrasonic band and detecting it. Since the ultrasonic wave communication technique using ultrasonic waves is mainly used in underwater communication, it is effective to use ultrasonic waves in order to send away the sound waves carrying data because the electromagnetic wave communication is not performed in the water.

However, the technology using ultrasonic waves for data transmission has a limit in that it can not be applied to audio devices such as TVs, radios, and mobile phones that need to use the audio frequency band. That is, a speaker or a microphone of a device such as a TV, a radio or a cellular phone is assumed to use a sound wave of an audible frequency band that can be heard by a person, so that a sound wave communication technique using ultrasonic waves can not be applied.

As one prior art proposed to solve such a problem, there is an "information transmission / reception system " disclosed in Korean Patent Publication No. 10-2012-0050186. The prior art exemplifies a method for effectively performing sound wave communication using audio contents by efficiently inserting information without being able to listen to the human ear without damaging the original sound source in the audio frequency band. Thus, the conventional TV, radio broadcasting network, It is possible to transmit the additional data based on the audio contents to the personal audio equipment such as a mobile phone without changing the existing facilities of the audio equipment and transmit the desired information through the sound wave communication in the audio frequency band while minimizing the damage to the original sound of the audio contents A method and an apparatus are provided.

As another prior art, there is a " wireless sound wave communication system and a method therefor ", which is disclosed in Korean Registered No. 10-1289027, filed by the present applicant. The illustrated "wireless acoustic communication system and method therefor" also describes a system for converting measured or externally input data into a binary signal and outputting it as a sound wave signal, and receiving the sound wave signal for analysis and restoration .

The common points of the prior arts described are that information to be transmitted using a sound wave (hereinafter referred to as "effective information") is transmitted as an acoustic signal, and a receiving end device such as a mobile phone collects the information through a microphone and performs a series of signal processing Restoration.

In this case, the signal received through the microphone is influenced by noise of various frequency bands (audible or non-audible frequency band), so that effective information can be normally restored due to the same or similar noise There may be occasions when there is no or delayed restoration.

In addition, since the effective information may be distorted due to noise interference, it is necessary to add a measure for judging the validity of the transmitted effective information in order to obtain normal effective information.

Korean Patent Publication No. 10-2012-0050186 Korean Patent Publication No. 10-1289027

It is therefore an object of the present invention to solve the problems of the above-described prior arts and to provide a method and apparatus for generating sound wave signals that can be normally restored without being affected by ambient noise, An information transmission system and an information reception system capable of normally recovering effective information from an acoustic signal transmitted therefrom.

It is still another object of the present invention to provide an information transmission / reception system using sound wave communication so that correct information can be transmitted and received quickly by determining validity of effective information transmitted through a sound wave signal.

In order to achieve the above object, there is provided a system for transmitting and receiving information using sound waves according to an embodiment of the present invention. The system includes a radio wave including effective information to be transmitted or a sound wave mixed with radio wave information for transmitting sound waves, The sound wave transmission information includes at least a plurality of pieces of tag information for indicating the start and end of the effective information and checksum information for verifying the reception validity of the effective information, A transmission system; Receiving the sound wave transmission information in the form of a sound wave through an audible sound input unit, separating only the effective information through the plurality of tag information searches, verifying validity of the separated effective information by reading the check sum information, System.

The information transmission system includes a radio wave information generation unit for generating radio wave information including effective information to be transmitted; An information mixing unit for mixing sound information of the original sound to be transmitted with a sound wave and the generated radio wave information to generate sound wave transmission information; And a sound wave signal output unit for converting the sound wave transmission information into an acoustic wave signal of an audible frequency band and outputting the sound wave transmission information, wherein the radio wave information generation unit comprises: a plurality of tag information for instructing start and end of the effective information; And checksum information for verifying reception validity.

The radio wave information generating unit generates the radio wave information by including a plurality of pieces of tag information indicating the start of the effective information.

The radio wave information generating unit generates checksum information using the valid information to be transmitted, and the generated checksum information is arranged after the tag information indicating the end of the valid information together with the delimiter information.

The propagation information generation unit avoids a frequency interval occupied by the original sound information for transmission to the sound wave in the audio frequency band or generates the propagation information so as to occupy a small frequency interval.

Wherein the original sound information is any one of audio information for broadcasting, audio information for advertisement, and audio information for indicating measured biometric information, and the valid information includes disaster notification information, advertisement information, guide information, link information, And audio information for displaying the audio information.

The information receiving system may include at least one of the radio wave information including the valid information and the original sound information, or the sound wave transmission information in the form of a sound wave in which the sound wave transmission information is mixed, A restoring unit; A radio wave information separating unit for separating the radio wave information from the restored sound wave transmission information; The tag information indicating the start and end of the valid information is searched to separate the valid information from the separated radio wave information and the checksum information included in the radio wave information is read to verify the reception validity of the effective information, A validity information check unit for verifying the validity of the validity information; And a validity information display unit for displaying the validated validity information on the display unit.

And the validity information checking unit compares the digital data constituting the separated validity information with the checksum information to verify validity.

The effective information check unit determines that the tag information indicating the start of the valid information is a start period of effective information when it is repeatedly searched for a predetermined time.

The valid information includes any one of disaster notification information, advertisement information, guide information, link information, and audio information for indicating measured biometric information.

The information receiving system may be implemented as an app that can be installed and executed on a recording medium of a mobile device capable of accessing the Internet.

The present invention inserts a plurality of pieces of tag information indicating the start of effective information to transmit sound waves so that effective information transmitted through a sound wave can be normally restored without being affected by ambient noise. It has the advantage of being able to restore normally and quickly,

In addition, since the present invention transmits information for determining the validity of the effective information to be transmitted through the sound wave, the receiving terminal compares the received validity information with the validity determination information to secure reliability in the received effective information restoration And if necessary, retransmission can be requested, so that effective information can be transmitted and received more quickly.

In addition, since the present invention is provided in the form of an executable application installed in a mobile device having a generalized distribution, it is possible to easily mix information to be broadcasted quickly to the public, such as disaster notification information, A disaster alert message can be propagated to a large number of people just by broadcasting, and there is an advantage that the disaster alert message can be widely applied even in the field of advertising.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary block diagram of an information transmission / reception system using sound wave communication according to an embodiment of the present invention; FIG.
FIG. 2 is a diagram for explaining a process of generating checksum information for verifying validity of valid information according to an embodiment of the present invention; FIG.
3 is a view for further illustrating a process of synthesizing a frequency section corresponding to original sound information and propagation information according to an embodiment of the present invention.
4 is a view for explaining the operation of the information transmission / reception system according to the embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Before describing the present invention, the terms used in the embodiments and claims shall be defined as follows.

Information to be transmitted using sound waves, which includes information on disaster alert for propagating various disasters to a broadcast signal listener, stores located in a specific area, advertisement information for advertising a product, guide information, link information, The audio information for indicating the information corresponds to the valid information.

Radio wave information: Information including tag information for instructing the start and end of effective information to propagate the effective information using sound waves, and check sum information for verifying the validity of valid information.

Sound wave transmission information: information that is finally transmitted to a sound wave in the information transmission system, and includes only radio wave information without mixing of radio wave information or original sound media information in which original sound information is mixed.

Original sound information: Various audio signals in analog or digital form, which are reproduced or recorded on a recording medium and are to be output in the form of audible sounds.

In addition, while the original sound information to be described in the embodiment of the present invention is converted into an audio signal of an audio frequency band and outputted as a sound wave, the effective information can be transmitted as an audio signal of an audible or non-audible frequency band.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings,

1 is a block diagram illustrating an information transmission / reception system using sound wave communication according to an exemplary embodiment of the present invention. FIG. 2 is a flowchart illustrating a method of generating checksum information for verifying the validity of valid information according to an exemplary embodiment of the present invention Fig.

Referring to FIG. 1, in an information transmission / reception system using sound wave communication according to an embodiment of the present invention,

The sound wave transmission information includes at least the start and end of the effective information, and the sound wave transmission information includes at least the start and end of the effective information, (100) for outputting sound waves including a plurality of tag information indicating validity of the valid information and checksum information for verifying the validity of reception of the valid information,

Receiving the sound wave transmission information in the form of a sound wave through an audible sound input unit, separating only the effective information through the plurality of tag information searches, verifying validity of the separated effective information by reading the check sum information, System 200 shown in FIG.

For reference, the information receiving system 200 can be implemented as an app that can be installed and executed on a recording medium of a mobile device (smart phone, tablet PC, PDA) capable of accessing the Internet. It will be obvious to those skilled in the art that a dedicated device capable of communicating with the information transmission system 100, which will be described later, can communicate with a sound wave.

As shown in FIG. 1, an information transmission system 100 according to an embodiment of the present invention includes a radio wave information generation unit 110 for generating radio wave information including effective information to be transmitted, A sound wave signal output unit 130 for converting the sound wave transmission information into a sound wave signal of an audio frequency band and outputting the sound wave transmission signal, , And the radio wave information generating unit 110 generates the radio wave information by further including a plurality of pieces of tag information indicating start and end of the effective information and checksum information for verifying reception validity of the effective information .

In the above-described configuration, the radio wave information generating unit 110 includes tag information for indicating the start of effective information, and instructs the start of effective information to distinguish from a noise having a pattern or frequency similar to the tag information for instructing start And the tag information is included in the radio wave information.

In addition, the radio wave information generation unit 110 generates checksum information using valid information to identify that the effective information transmitted in a sound wave form is deformed by noise. The generated checksum information includes delimiter information (e.g., #) And the tag information indicating the end of the valid information.

3, in order to shorten the restoration time of the sound wave transmission information, the radio wave information generation unit 110 avoids the frequency band occupied by the original sound media information in the audio frequency band or generates the radio wave information to occupy a small frequency band can do.

The information transmission system 100 described above may be a dedicated information transmitter having only the configuration described above and may be a biometric information (for example, blood pressure, body weight, body fat, blood sugar, etc.) measuring apparatus added with the above configuration. In this case, the biometric information becomes effective information. Furthermore, all of the audio reproduction output apparatuses capable of receiving broadcasting signals as radio broadcasts and outputting them in the form of audible sounds, reproducing and outputting audio signals stored in the recording medium, and outputting public or advertising audio inputted through a microphone in the form of audible sounds The information transmission system 100 shown in FIG. 1 may be added to form one information transmission system.

The original sound information may be any one of audio information for broadcasting, audio information for advertisement, and audio information for indicating measured biometric information, and the valid information may include a disaster to be transmitted to a listener who listens to the original sound information in the form of audible sound Advertisement information, guide information, and link information.

As shown in FIG. 1, the information receiving system 200 that can be installed in the mobile device includes either one of the radio wave information including the effective information and the original sound media information, or the sound wave transmission information of the sound wave type in which they are mixed A transmission information restoring unit 210 for receiving the sound information through the sound input unit 300 and restoring the sound wave transmission information, a radio wave information separating unit 220 for separating the radio wave information from the restored sound wave transmission information, The tag information for indicating the start and end of the valid information is retrieved from the information to separate the valid information and the checksum information included in the radio wave information is read to verify the reception validity of the valid information, A validity information check unit 230 for verifying validity, and a validity information display unit 240 for displaying validity-verified validity information on the display unit 400.

In addition, the validity information checking unit 230 verifies validity by comparing the digital data constituting the separated validity information with the checksum information, and determines whether the tag information indicating the start of the validity information is repeatedly When it is searched, it is judged as a start interval of normal effective information, and effective information is separated.

The process of generating the radio wave information including the valid information will be further described with reference to FIG. 2. Hereinafter,

2 (a) illustrates a table in which a sonic maps a number constituting valid information, and FIG. 2 (b) illustrates a table in which effective information 70 * 6 to be transmitted to a sound wave and start (C) shows that the checksum information is generated by summing up the mapping numbers of the valid information 70 * 6, (d) shows the case where the tag information And the sound wave transmission information including the data delimiter (#) and the checksum information.

The radio wave information generation unit 110 arranges tag information A and B indicating the start and end of the effective information "70 * 6" At this time, the tag information A indicating the start can be repeatedly arranged in order to differentiate the noise having the same pattern (or frequency). 'D' shown on the right side (b) of FIG. 2 indicates the same effective information separator for distinguishing between adjacent valid valid information. 35, which is obtained by adding the mapping numbers 7, 10, 12 and 6 indicated by the valid information "70 * 6 ", as shown in (C) .

When the checksum information is generated and the propagation information is generated and transmitted to the sound wave, the validity of the validity information can be verified by comparing the same number of mapping numbers corresponding to the actual data of the valid information and comparing it with the checksum information.

In addition, it is preferable that the radio wave information generation unit 110 generates the radio wave information so as to avoid the frequency band occupied by the original sound information for transmitting the sound wave in the audio frequency band or to occupy a small frequency band (two intervals in FIG. 3). In FIG. 3, (a) represents the frequency corresponding to the original sound information. (b) is a frequency corresponding to effective information to be transmitted to a sound wave, and (c) shows a frequency corresponding to sound wave transmission information in which radio wave information including effective information and original sound media information are mixed. In order to quickly find and separate the radio wave information and the valid information at the receiving end, it is preferable to search for a section having a small frequency corresponding to the original sound medium information as in the two sections of (b).

Hereinafter, the operation of the information transmission / reception system according to the embodiment of the present invention will be described in further detail.

4 is a view for explaining the operation of the information transmission / reception system according to the embodiment of the present invention. In FIG. 4, it is assumed that the original sound media information is advertising audio information, and the effective information is link information of a shopping mall where sales of a product advertised in a sound wave is performed. It is assumed that the information receiving system 200 according to the embodiment of the present invention is already installed in the form of an app in the mobile device of the listener listening to the advertisement audio.

4, the radio wave information generation unit 110 of the information transmission system 100 capable of outputting commercial audio information (commercial) to sound waves generates radio wave information including effective information, which is shopping mall link information Step S10). As described with reference to FIG. 2, the radio wave information includes a plurality of pieces of tag information, data delimiter information, and checksum information for instructing start and end of effective information.

The information mixing unit 120 mixes the radio wave information generated by the radio wave information generation unit 110 with the original sound information periodically to generate sound wave transmission information (step S12). The generated sound wave transmission information may have the frequency characteristic of (c) illustrated in Fig.

The sound wave transmission information generated by the information mixing unit 120 is converted into a sound wave signal of an audible frequency band through the sound wave signal output unit 130 at the subsequent stage (step S14) .

When the sound wave transmission information is output as a sound wave, the listener directly hears the advertisement audio information corresponding to the original sound media information, and on the other hand, the sound wave transmission information propagated to the audible sound is input to the mobile device through the audible sound input unit 300.

If the information receiving system 200 installed in the mobile device is activated, the transmission information restoring unit 210 receives the sound wave transmission information in a sound wave form through the sound wave input unit 300 (step S20) (Step S22).

When the sound wave transmission information is restored in this manner, the radio wave information separating unit 220 separates only the radio wave information from the restored sound wave transmission information (step S24). In the method of separating the radio wave information, one of the two pieces of information can be separated through the search of the inserted identification tag when mixing the two pieces of information. The separated original sound media information is transmitted to the original sound media output path such as the earphone.

If the radio wave information is separated, the validity information check unit 230 searches the separated radio wave information for tag information indicating the start and end of the effective information, separates the effective information (step S26) (Step S28). The checksum information included in the radio wave information is verified to verify the validity of the separated valid information (step S28). The validity verification is described in FIG. 2, so it is omitted.

The validated valid information is then displayed on the display unit 400 through the effective information display unit 240 so that the listener can receive the validated information via the display unit 400, The link information can be received.

As described above, according to the present invention, effective information is mixed with advertisement audio information to transmit sound waves, and the information receiving system 200 receives the information and displays the restored effective information on the display unit 400, Listeners who listen directly to the device can receive relevant information conveniently through their mobile devices. In this process, since separate tag information is inserted and transmitted in order to facilitate separation of the effective information transmitted from the sound wave and the ambient noise, it is possible to perform sound wave communication having robustness to the ambient noise, It is possible to verify whether the valid information transmitted through the sound wave is valid or not, thereby improving the reliability of the sound wave communication.

In the above-described embodiment, the commercial audio information and the shopping mall link information are mixed and transmitted by sound wave. However, it is possible to mix the disaster announcement broadcast with the general radio broadcast and transmit the sound wave without modifying it. In this case, the information transmission system 100 corresponds to a system of a radio broadcasting station, and if the radio broadcasting in which the disaster notification information is mixed is outputted as a sound wave, the sound wave output is received by the information receiving system 200 according to the embodiment of the present invention In this case, the listener normally hears the normal radio broadcast, and the disaster notification information can be received through the display unit 400 through the mobile device.

Accordingly, the present invention can select any one of audio information for broadcasting, audio information for advertisement, and audio information for indicating measured biometric information as original sound media information, and it is also possible to provide information such as disaster notification information, advertisement information, After selecting any one of the measured biometric information, they can be mixed and transmitted as a sound wave.

While the invention has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Accordingly, the true scope of the present invention should be determined only by the appended claims.

Claims (11)

The sound wave transmission information is generated by mixing the radio wave information including the effective information to be transmitted or the sound wave transmission information in which the radio wave information and the original sound medium information for transmitting the sound wave are mixed, The validity information, at least one validity information, checksum information for verifying the validity of the validity information, delimiter information for delimiting the validity information and the checksum information, arranged in the potential of the checksum information, an array of the end tag, unique information indicating an end, when the validity information mutually adjacent same, the information transmission system and further comprises the same effective information separator to separate them each other, and;
Receiving the sound wave transmission information in the form of a sound wave through an audible sound input unit, separating only the effective information through the plurality of tag information searches, verifying validity of the separated effective information by reading the check sum information, And transmitting the information to the information transmitting / receiving system using the sound wave communication. The method according to claim 1,
The information transmission system includes:
A radio wave information generation unit for generating radio wave information including effective information to be transmitted;
An information mixing unit for mixing sound information of the original sound to be transmitted with a sound wave and the generated radio wave information to generate sound wave transmission information;
And a sound wave signal output unit for converting the sound wave transmission information into an acoustic wave signal of an audible frequency band and outputting the converted sound wave signal,
Wherein the propagation information generation unit further includes a plurality of tag information indicating start and end of the valid information and checksum information for verifying reception validity of the valid information to generate the propagation information. Information transmission / reception system. 3. The method of claim 2,
Wherein the radio wave information generating unit generates the radio wave information by including a plurality of tag information indicating the start of the effective information. delete 4. The method according to any one of claims 2 to 3,
The radio wave information generation unit generates,
Wherein the radio wave information is generated so as to avoid a frequency interval occupied by original sound information for transmitting the sound wave in the audio frequency band or to occupy a small frequency interval. 4. The method according to any one of claims 2 to 3,
Wherein the original sound information is any one of audio information for broadcasting, audio information for advertisement, and audio information for indicating measured biometric information, and the valid information includes disaster notification information, advertisement information, guide information, link information, And audio information for displaying the audio information. The method according to claim 1,
The information receiving system includes:
A transmission information restoration unit for restoring the sound wave transmission information by receiving sound wave transmission information in the form of a sound wave including any one of the radio wave information including the effective information and the original sound media information through an audible sound input unit;
A radio wave information separating unit for separating the radio wave information from the restored sound wave transmission information;
The tag information indicating the start and end of the valid information is searched to separate the valid information from the separated radio wave information and the checksum information included in the radio wave information is read to verify the reception validity of the effective information, A validity information check unit for verifying the validity of the validity information;
And an effective information display unit for displaying the validated valid information on a display unit. 8. The method of claim 7,
Wherein the effective information check unit verifies the validity by comparing digital data constituting the separated valid information with the checksum information to verify validity. 8. The method of claim 7,
Wherein the effective information check unit determines that the tag information indicating the start of the valid information is a start period of valid information when the tag information is repeatedly searched for a predetermined period of time. The method according to any one of claims 1, 7, 8, and 9,
Wherein the effective information is one of disaster alert information, advertisement information, guide information, link information, and audio information for indicating measured biometric information. The method according to claim 1,
Wherein the information receiving system is implemented as an application installed and executable on a recording medium of a mobile device capable of accessing the Internet.

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