WO2015082599A1 - Communication method using audio signals, mobile terminal for use in an audio communication method and corresponding communication system - Google Patents

Abstract

The invention provides a communication method, a mobile terminal for use in a communication method and a communication system. The communication method has the steps of: transmission (S01) of a radio signal (FS) by means of a transmission apparatus (S), wherein the radio signal (FS) has an information audio signal (A1), with frequencies in an audible first frequency range, and a control audio signal (A2), with frequencies in a second frequency range, embedded in it; reception (S02) of the radio signal (FS) by means of an audio reproduction apparatus (20); output (S03) of the information audio signal (A1) and the control audio signal (A2) as sound waves (SW) by means of the audio reproduction apparatus (20); reception (S04) of the information audio signal (A1) and the control audio signal (A2) as sound waves (SW) by a microphone (12) of a mobile terminal (10) of a user (N); conversion (S05) of the control audio signal into an electrical control signal by the mobile terminal (10) by means of a computer program product installed on the mobile terminal (10); and transmission (S06) of information, based on the electrical control signal, in an output signal (A3) from the mobile terminal (10) to an external computation apparatus (30).

Description

 AUDIO SIGNALS USING COMMUNICATION METHOD, MOBILE SUB-DEVICE FOR USE IN AN AUDIO COMMUNICATION PROCESS AND CORRESPONDING

 COMMUNICATION SYSTEM

The present invention relates to a communication method, a mobile terminal for use in a communication method, and a communication system.

STATE OF THE ART

Methods for transmitting information by means of sound waves have been known for a long time. A simple example is radio stations which transmit radio signals as radio signals to radio receivers, which in turn output the radio signals acoustically and audibly.

The reception of the radio signals by a radio receiver and the reception of the sound waves output by the radio receiver are conventionally not verifiable. Radios transmitters are therefore dependent, for example, on voluntary information from users for verifying the reception of the broadcast radio signals. Also

Information about the number of receptions at certain times of day or at specific locations is not automatically available. Receiving radio signals via a walkie-talkie, for example, is usually verified by a verbal acknowledgment from a user.

Digital communication methods, such as via the Ethernet protocol, have a return channel, via which a reception of data can be confirmed. This requires special Ethernet-capable devices both transmitter and receiver side. The range of such information transmission method is significantly lower and requires a higher technical effort than about a transmission by means of a radio signal.

EP 1 906 696 A1 describes a system for providing information. The system includes a transmitter for converting various coded information into a sound pressure vibration and for emitting the sound pressure vibration. A terminal of the system is adapted to recover the various coded information by receiving and decoding the sound pressure vibration. The information will be transmitted as sound waves through air as the transmission medium from the transmitter to the terminal.

US 2006/0219068 A1 describes an acoustic communication system in which an encoding device encodes a data signal in an audio signal.

EP 2 574 021 A2 describes a system for demodulating a modulated code and providing content to a user. A sound device is designed to output a modulated code in the form of sound. The code can be detected by a smartphone, demodulated, and transmitted to a processor. Through the processor, a linked with the code content can be determined and transmitted via a network to the smartphone. The smartphone is designed to display the content on a display.

US 2012/01616226 A1 describes a system and a method for detecting a non-visual code by means of an application on a smartphone. The nonvisual code may be a high frequency signal alone or in combination with another audio or video signal. The application is designed to extract the code and display visual content on the smartphone.

In EP 2 61 1 049 A1 a communication method between a local device and a server is described. The local device transmits a sound signal through air carrying data. A mobile communication device detects the sound signal by means of a

Microphones and demodulates it to extract the data, whereby a signal is received, which is transmitted via a network to the server.

DISCLOSURE OF THE INVENTION

The present invention discloses a communication method having the features of claim 1, a mobile terminal for use in one

Communication method with the features of claim 10 and a

Communication system with the features of claim 12.

The radio signal may be, for example, a broadcast signal, such as a radio or television signal. The radio signal may also be a telecommunication signal, such as a telephone signal. The modulation, that is, the imposition of information on a carrier wave, in particular the embedding of the information audio signal and the control audio signal in the radio signal, for example by means of amplitude, pulse, frequency and / or

Phase modulation done. Advantageously, the radio signal is formed as a plurality of electromagnetic waves.

The information audio signal may be configured for the acoustic transmission of information. For example, it may be an audio signal of a radio station or a radio station. The audio signal may also be part of a television signal. In particular, the informational audio signal may include music, human speech, and / or various everyday sounds, such as engine noise, bells, dogs, etc.

The information audio signal includes audible frequencies. With "audible" are such

Meant frequencies that are within the human listening area. Ultra or infrasound can be examples of inaudible frequency ranges.

The second frequency range may partially overlap the first frequency range, such that the control audio signal may be partially formed with audible frequencies and partly with inaudible frequencies. The first and the second frequency range can also be completely disjoint. For example, the second frequency range may consist entirely of non-audible frequencies. Thus, the control audio signal can be composed entirely of non-audible frequencies, that is to say extend approximately completely in the ultra, hyper or infrasound range. The second frequency range may be identical to the first frequency range, so that the control audio signal may consist of audible second frequencies.

Advantageously, the control audio signal consists of tones and / or sounds. Thus, the control audio signal can be particularly easily recognizable and convertible for the computer program product. A plurality of control audio signals may also be embedded in the information audio signal. For example, the plurality of control audio signals may be cyclically embedded in the informational audio signal at predefined time intervals. To secure the communication method according to the invention, the control audio signal, in particular a tone sequence of the control audio signal, also

Security features and / or keys included, which are usable by the computer program according to the invention.

The audio playback device may be any device which may be used for

Receiving the radio signal FS and outputting the information audio signal and the control audio signal as sound waves. This may be, for example, a smartphone, a laptop, a desktop PC, car radios, TV sets, etc.

The mobile terminal may be a device specially designed for the method according to the invention. It can also be a smartphone, a laptop, a tablet, a camera, a PDA or similar. In particular, the mobile terminal can each be an internet-enabled communication device.

Advantageously, the mobile terminal has a display device, for example a touchscreen. The display device can be used to provide the user with additional visual information, such as pictures, product details, concert dates,

Order information etc.

The computer program product installed on the mobile terminal may be, for example, an app. The computer program product may be permanently installed on the mobile terminal, wherein the mobile terminal is designed specifically for the

inventive communication method is formed; the

Computer program product can also be freely installed and uninstallable. The computer program product may therefore allow the method according to the invention to be carried out with a large number of different devices.

The computer program product can automatically perform its functions according to the invention whenever the mobile terminal on which it is installed is supplied with electrical power. The computer program product can also be designed in such a way that it has to be activated by a user before carrying out his functions according to the invention. For example, it may be provided that the user must start an app on a mobile phone. It can also be provided that the user must make further inputs within an already started app, for example, the app must be moved from a "non-receiving state" to a "receiving state". The conversion of the control audio signal into an electrical control signal takes place by means of the computer program product installed on the mobile terminal. It can

Control instructions may be stored in a memory of the mobile terminal, which determine how a specific control audio signal is to be converted into a specific electrical control signal based on parameters of the particular control audio signal detectable by the computer program product. Further

Control instructions can be stored on external computing devices, for example, the external computing device, and be reloaded from there via the stored in the memory of the mobile terminal control instructions.

The control instructions may also serve to determine which part of the sound waves received from the mobile terminal is to be assigned to the control audio signal, which part is to be assigned to the informational audio signal and / or which part is to be assigned to neither.

For example, it can be provided that sounds or sounds with frequencies in the second frequency range are automatically assigned to the control audio signal. In this case, a plausibility check and / or an error correction can be carried out. Thus, it can be prevented that sounds or sounds which are not attributable to the control audio signal - for example sounds or sounds from the environment or from the information audio signal - are erroneously assigned to the control audio signal.

Advantageously, parameters of the control audio signal in the

Computer program product (logical) or in a memory device of the mobile

Terminal (physical) and / or in an external computing device, such as the external one

Computing device, filed and compared the received sound waves with these parameters.

Such parameters may include, for example, an overall length of the control audio signal, a number of tones and / or sounds of the control audio signal, a length or a length sequence of tones and / or sounds of the control audio signal, etc. The received sound waves can be picked up by the mobile terminal and analyzed by the computer program product time-delayed to extract the control audio signal from the received sound waves. Alternatively, the analysis of the received sound waves can also be done in real time. It can be a first sound or sound with a first frequency may be provided, which signals that the control audio signal begins. A second tone or tone having a second frequency may be provided, which signals that the control audio signal is ending.

The electrical control signal is in particular a control signal for the mobile terminal, that is, a control signal for operating the mobile terminal and / or the

A computer program product. The control signal can operate, for example, the mobile terminal and / or the computer program product such that code segments are stored in the memory device of the mobile terminal or in a region of the external computing device directly assigned to the mobile terminal. The storage at an external location can be advantageous because the code segments can be retrieved from there again and again even if the mobile terminal or its storage capability is lost. The code segments may be included in the control audio signal.

In particular, the external computing device may be a central computing device to which a plurality of mobile terminals each have an instance of

Computer program product is installed to transmit their respective output signals. The external computing device may be configured as a server, for example. The transmission can take place, for example, via the Ethernet protocol, the Internet, a wired and / or wireless (W) LAN network.

 The output signal of the mobile terminal is advantageously a digital one

Output.

Furthermore, a mobile terminal according to claim 10 is provided. Furthermore, a communication system according to claim 12 is provided. Advantages of the invention

The idea underlying the present invention is to provide the emission of an output signal of a mobile terminal based on an acoustically received control audio signal.

Depending on the application, the output signal may include a variety of information. That is, the electrical control signal may be the mobile terminal and / or the Operate computer program product such that the output signal of the mobile terminal to the external computing device in accordance with the control signal comprises certain information. Thus, the mobile terminal may make a payment based on the control audio signal.

For example, a user may have specific data for him, such as a name, a

Account number, a customer number, etc. entered into the computer program product. The control signal may cause the output signal to include all or some of the data specific to the user.

The output signal may include information about the informational audio signal. In particular, it may include information as to when the control audio signal was received relative to the informational audio signal. As a result, for example by means of the control audio signal, it can be verified which part of the information audio signal was received by the mobile terminal.

In accordance with the control signal, the output signal may also comprise code segments of the control audio signal. The output signal may include information about when the control audio signal was received as a sound wave by the mobile terminal, such as using an internal clock of the mobile terminal. The output signal may include information about which volume or which

Sound pressure level the sound waves were received. In particular, it may include information as to whether a part of the informational audio signal has been received at a predetermined volume. Thus, for example, at which distance from the audio playback device, the mobile terminal can be verifiable when receiving the

Sound waves was, if known, with which sound pressure level the audio playback device emits the sound waves.

Furthermore, it may be verifiable whether a portion of the informational audio signal has been received at such a sound pressure level that the combination of the frequencies of the portion of the informational audio signal and the sound pressure level of the respective one

Frequencies within the human listening area. Instead of the human auditory surface, it is also possible to refer to the specific auditory surface of a specific user, which may for example be stored in the computer program product. Thus, it can additionally be verified whether at the location of the mobile terminal human user, or the mentioned specific user who could also perceive informational audio signal. Verifying the reception of the informational audio signal can thereby become even more precise. Advantageously, the mobile receiving device may be wearable or implantable at an ear, near an ear or in an ear of the user.

For example, the informational audio signal may include instructions to the user of the mobile terminal that the user is to follow. If the user does not follow these instructions, it may be verifiable whether the user must have heard the instructions. Such a method for verifying the

Receiving the information audio signal can be used, for example, in prison. For example, a person in custody or house arrest can permanently wear a mobile terminal according to the invention. Thereby, it can be verifiable whether the person has perceived an information audio signal outputted by an audio reproducing apparatus such as a prison announcement system.

In the information audio signal, for example a radio station, a multiplicity of control audio signals can be embedded, for example with predetermined temporal

Distances from each other, about every 10 minutes. Each of the control audio signals can operate the mobile terminal such that a code segment different for each control audio signal is stored in a memory device of the mobile terminal. Each stored code segment can be sent in a single output signal to the external

Computing device are transmitted. Alternatively, even when a certain number of different code segments are reached, the number of code segments can be used as part of the code segment

Output signal are transmitted to the external computing device. Thus, for example, it may be verifiable that a specific user of the mobile terminal has listened to the radio station for a certain time. The specific user can start an app on his mobile phone as a mobile device, in which he has previously entered his user data. The user data is transmitted in whole or in part as part of the output signal.

The external computing device may be a central server to which a plurality of mobile terminals according to the invention transmits the output signal. The server determines a number of the received code segments for each specific user and generates based on this control signals. The method according to the invention can thus be used within the framework of a loyalty program for a radio transmitter.

If the control audio signal is deliberately superimposed, for example, on an advertisement output as part of the informational audio signal, it can be verifiable whether a specific user has heard this advertisement. In particular, the external computing device further verifiable how many users have heard this advertising.

The electronic control signal may also operate the mobile terminal such that the mobile terminal displays on a display device of the mobile terminal a hyperlink to an Internet page specified in the electronic control signal and makes it available to a user of the mobile terminal. For example, it may be a hyperlink to a download or a product description or a

Trade product offer. The output of the mobile terminal may include information as to whether and when the hyperlink was used.

Advantageous embodiments and developments emerge from the

Subclaims and from the description with reference to the figures.

According to a preferred embodiment of the invention

Communication method, the output signal includes information about the mobile terminal. Alternatively or additionally, the output signal may also include information about a serial number of the computer program product installed on the mobile terminal. The serial number and / or the information about the mobile terminal can be stored on the external computing device, advantageously in each case in connection with user data of a user, for example a name or a

Customer number. Thus, an even more accurate assignment is possible, which instance of the computer program product or which mobile terminal has received the audio signals.

According to another preferred embodiment of the invention

Communication method, the second frequency range extends completely or partially over non-audible frequencies. Thus, the information audio signal and the control audio signal interfere with each other very little, which causes the

Make communication more reliable. Furthermore, thus can disturbances of the control audio signal is reduced or prevented by external noise, sound and sound sources.

According to a further preferred development, the information audio signal and the control audio signal are output superimposed as sound waves. Thus, the information density transmitted by the two audio signals can be increased. In addition, this makes it possible to verify with particular precision whether a particular part of the information audio signal, namely that part to which the control audio signal is superimposed, has been received by the mobile terminal.

According to a further preferred development, the mobile terminal is operated based on the electrical control signal such that at least one code segment contained in the control signal is stored in a memory device of the mobile terminal. The code segment - or a predetermined number of code segments of any or predetermined type - may also be communicable to a receiver. In which

Code segment may be, for example, an authorization code segment or a token.

According to a further preferred development, the mobile terminal is operated based on the electrical control signal in such a way that it outputs a warning signal if the information audio signal received by the mobile terminal is wholly or partly not within the human auditory area. That is, the electrical control signal may indicate that an informational audio signal should be received, and may further effect an analysis of the sound waves received by the mobile terminal. If the analysis reveals that the received information audio signal is wholly or partly not within the human auditory surface, the warning signal is output acoustically or optically, for example. Thus, a method is provided to indicate the possible receipt of an informational audio signal. This can, for example, important announcements in consequence of a major event, such as evacuation instructions, or at

Depending on the situation important announcements, such as announcements on traffic conditions, be beneficial.

According to a further preferred development, the output signal comprises at least one code segment contained in the control signal. The code segment can thus be used, for example, as a reception detection of a specific part of the information audio signal, that is to say for verification of the reception. In response to that By transmitting the output signal to the external computing device, the computing device may send to the mobile terminal an authorization code segment called a token.

The entitlement code segment may entitle the user of the mobile terminal to purchase a good or service, such as entry into an event or purchase of value units commonly used on the Internet, such as the Internet. so-called bitcoins. The proof of authorization can be carried out by means of a test device which is designed to read the token from the mobile terminal, to verify its authenticity, for example by means of a request to the external computing device. The checking device may be another mobile terminal on which another

Computer program product is executed. The testing device may also be part of the communication system according to the invention.

If the product or service is obtained by means of the token, the checking device can issue an authorization destruction signal to the mobile terminal and / or to the external device

Send out computing device. Upon receipt of the entitlement destruction signal, the entitlement code segment or token may be destroyed or invalidated by the computing device, or due to a control signal of the computing device to the mobile terminal by the mobile terminal.

According to a further preferred development, the control audio signal comprises a tone sequence, which is generated by the computer program product in accordance with a

Multi-frequency dialing is converted into a string. That in the

Control code contained code segment includes the string. The for the

Frequency bands can all be audible, all non-audible, some audible and some non-audible. The tone sequence can last for example between 1 and 60 seconds, advantageously between 1 and 20 seconds, in particular between 2 and 10 seconds.

If it suffices for the purpose for the control audio signal A2 to comprise only digit strings as strings, it can be used, for example, as the known one

Multi-tone dialing is used for telephones to encode digits from 1-9, 0 and ^* , # and AD. Thus, overlays of two frequencies each can be used to encode a digit or a letter. Should strings with more Different characters can be coded, a multi-frequency dialing with a superposition of more than two frequencies, for example, three frequencies can be used. Thus, for example, 3x3x3 frequencies could be defined by which all letters of the alphabet could be encoded.

According to a further preferred development, the output signal comprises a

Information request signal. In response to the information request signal, additional information may be transmitted from the external computing device to the mobile terminal. Thus, a variety of additional information can be provided on the mobile terminal without all of these additional

Information needs to be inserted directly into the control audio signal. The control audio signal may also directly include the additional information in addition to the information request signal. As a result, the transmission of additional information to the mobile terminal is redundantly secured, making the process can be more robust against external disturbances. The additional information may be, for example, an electronic coupon.

According to a further preferred development, the output signal is furthermore based on a user input of a user into the mobile terminal. For example, the output signal may include user data of the user, which the user as

User input entered into the mobile terminal, such as a name, a

Customer number, payment information etc. The user input can also

Include control statements that may dictate based on soft

electrical control signals, the mobile device to be operated in what way. For example, the user may enter that he wants additional information, whereupon the output signal may include an information request signal.

The mobile terminal may be operated based on the electrical control signal to provide a user of the mobile terminal with an option to enter a rating to the mobile terminal for a particular portion of the informational audio signal. The particular part may be, for example, a part to which the control audio signal is superimposed, or a part which is comprised of two control audio signals. The user's rating may be communicated to the external computing device as part of the output signal. The external one

Computing device may provide an average value to the computing device form transmitted ratings of a variety of mobile devices. The rating may include an assessment of acoustic intelligibility. The evaluation may also include an approval or rejection to a question transmitted by means of the information audio signal and / or by means of the control audio signal.

According to the invention, the information audio signal and / or the control audio signal is changed in response to the transmitted output signal. For this purpose, for example, the external computing device may be connected to the transmitting device via a control line. If, for example, a predetermined first number of code segments is received by a predetermined second number of different mobile terminals by means of the external computing device, the computing device can transmit a further control signal to a control device of the transmitting device. Based on this further control signal, the control device can operate an antenna of the transmitting device such that a different information audio signal is emitted than before the transmission of the control signal. For example, a radio station can automatically and specifically respond to listener quotas represented by the second number of different mobile terminals by changing a radio program. If, for example, evaluations about the acoustic intelligibility of the information audio signal are collected by the computing device, a transmission quality of the transmission device can be automatically improved based on this.

If the transmitted output signal also includes user data about the user of the respective mobile terminal, for example an age of the user, this can

automatic changing of the radio program also based on these user data, which can be collected and evaluated for a variety of mobile terminals by the external computing device. For example, an age structure of the users may be determined and based on the particular age structure automatically

Radio program to be changed. A control device of the transmitter of the radio signal may have predetermined decision rules, for example in a memory connected to the control device. The decision rules may determine which segments of the information audio signal are to be sent based on, for example, the particular age structure or also based on information about whereabouts of the mobile terminals. The location of the mobile terminal, for example, by a

Position determination device, such as by GPS, the mobile terminal can be determined and transmitted to the computer program product. The location can also be transmitted as part of the output signal to the external computing device.

According to a preferred refinement, the mobile terminal according to the invention is designed to be worn on, on or in a body of a user. For example, the mobile terminal may be formed in or as a hearing aid, or may be implanted near a human ear or in a human ear.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will be explained in more detail with reference to the embodiments illustrated in the schematic figures of the drawings. Show it:

Fig. 1 is a schematic flowchart for explaining a communication method;

FIG. 2 shows a schematic representation of a communication system according to the invention for carrying out a communication method according to the invention; FIG. and

3 shows a schematic block diagram of a mobile terminal according to the invention for carrying out a communication method according to the invention.

In all figures, the same or functionally identical elements and devices - unless otherwise stated - provided with the same reference numerals.

DESCRIPTION OF THE EMBODIMENTS

Fig. 1 is a schematic flowchart for explaining a

Communication method. In the description of Figure 1, reference will also be made in part to the reference numerals of the following Figures 2 and 3.

In a step S01, a radio signal FS is emitted as electromagnetic waves EMW by means of a transmitting device S. An information audio signal A1 with frequencies in an audible first frequency range is embedded in the radio signal FS. The Radio signal FS is emitted in particular as a modulated electromagnetic wave with a wavelength typical for radio signals. The transmitting device S according to the first embodiment has an antenna A and a coupled to an antenna A.

Control device ST of the antenna A on.

The informational audio signal A1 is a common audio signal of a radio channel and includes, in particular, music, human speech and / or various everyday sounds such as engine noise, bell sounding, dog handing, etc. The radio signal FS further includes a control audio signal A2 having frequencies in a second Embedded frequency range.

In a step S02, the radio signal FS is received by means of an audio reproduction device 20. The audio playback device 20 is a

Wireless, for example a kitchen radio.

In a step S03, by means of the audio reproducing apparatus 20, the information audio signal A1 and the control audio signal A2 are output by means of the audio reproducing apparatus 20 as sound waves SW.

The information audio signal A1 and the control audio signal A2 are reproduced superimposed as sound waves according to the first embodiment. The information audio signal A1 is superimposed with a tone sequence as the control audio signal A2. Advantageously, this can be done while the information audio signal A1 has a relatively quiet volume level.

Advantageously, a plurality of different tone sequences of one or more control audio signals A2 can be cyclically sent e.g. are issued shortly before commercials.

In a step S04, the information audio signal A1 and the control audio signal A2 are received as sound waves SW through a microphone 12 of a mobile terminal 10 of a user N.

In a step S05, the control audio signal A2 is converted into an electrical control signal by the mobile terminal 10 by means of a computer program product installed on the mobile terminal 10. According to the first embodiment, a character sequence is coded in the tone sequence of the control audio signal A2 by means of a multi-frequency selection method. In converting S05 of the control audio signal A2, the sound sequence is converted back into the character string as an electrical control signal by the computer program product in accordance with the multi-frequency selection process.

In converting S05, the computer program product may be stored in one

Memory device 18 of the mobile terminal 10 access stored control rules. The conversion S05 of the control audio signal A2 into the electrical control signal can be carried out in accordance with these control rules. According to the first embodiment, the computer program product recognizes that a control audio signal A2 has been received by storing the sound waves SW received by the microphone 12 and into the

Control rules compares defined parameters. These parameters include the frequencies used in the multi-frequency selection method according to the first embodiment. As a result, for example by means of a processor device 14 of the mobile terminal 10 on which the computer program product is executed, the control audio signal A2 can be isolated from the information audio signal A1.

According to the first embodiment it is further provided that in a step S06 in accordance with the stored control rules, as part of the computer program product, the character string is transmitted as part of an output signal A3 to a central server as an external computing device 30. Thus, the external computing device 30 has been communicated, i. transmits an information that reception of at least part of the informational audio signal A1 by the mobile terminal 10 has taken place. This is at least the part to which the control audio signal A2 is superimposed.

Fig. 2 shows a schematic representation of an inventive

Communication system for performing the inventive

Communication method, for example, according to the above-described

Embodiment.

The functions and the interaction of the elements shown in Fig. 2 and

Features of the communication system according to the invention are described above with respect to the inventive communication method according to the above-described Embodiment in connection with FIG. 1 described in detail by way of example. Clearly, the communication system can also be adapted or used by a person skilled in the art for the multiplicity of variants of the communication system according to the invention, as described in this document.

Although only a single mobile terminal 10 is shown in FIG. 2, it should be understood that the communication method according to the invention and the communication system according to the invention can be used in particular for a plurality of mobile terminals 10, which transmit their respective output signal A3 to one for all mobile terminals 10 transmit common, external computing device 30.

FIG. 2 shows the transmitting device S which has the antenna A and the control device ST of the antenna A connected to the antenna A. By means of the transmitting device S, the radio signal FS is emitted as electromagnetic wave EMW. In the radio signal FS are the information audio signal A1 with the frequencies in the audible first

Frequency domain and the control audio signal A2 with the frequencies embedded in the second frequency range.

By means of the audio reproduction device 20, the radio signal FS is receivable and the information audio signal A1 and the control audio signal A2 of the radio signal FS as

Sound waves can be output. The communication system comprises a mobile terminal 10 according to the invention, for example a mobile terminal 10 according to the embodiment described with reference to FIG. 3. Furthermore, the communication system has the

Computing device 30, to which the at least one output signal A3 of the at least one mobile terminal 10 can be transmitted.

3 shows a schematic block diagram of a mobile terminal according to the invention for carrying out a communication method according to the invention, for example according to one of the embodiments described above.

The functions and the interaction of the elements shown in Fig. 3 and

Features of the mobile terminal according to the invention are in relation to the

inventive communication method according to the above-described

Embodiment in connection with FIG. 1 described in detail by way of example. The mobile terminal 10 is by a skilled person clearly also for the plurality of Variations of the communication system according to the invention and / or for performing the plurality of variants of the communication method according to the invention, as described in this document, adaptable or usable.

According to FIG. 3, the mobile terminal 10 has a microphone 12, by means of which the information audio signal A1 and the control audio signal A2 as sound waves SW

are receivable. In particular, the microphone 12 is adapted to detect the frequencies in the audible first frequency range which the informational audio signal A1 comprises. Furthermore, the microphone 12 is designed such that it can detect the frequencies in the second frequency range, which comprises the control audio signal A2, for example, non-audible frequencies. According to FIG. 3, the mobile terminal 10 also has a memory device 18, in which at least the

Computer program product is storable. The memory device 18 may in particular comprise a non-volatile memory, for example a flash memory and / or a volatile memory, such as a main memory.

In the mobile terminal 10, a processor device 14 is further included, by means of which the stored in the memory device 18 computer program product is executable such that by means of the computer program product, the control audio signal A2 is convertible into the electrical control signal. By means of the radio interface 16 of the mobile terminal 10, the information based on the electrical control signal, in the output signal A3 of the mobile terminal 10 to the external computing device 30 can be transmitted.

Although the present invention has been described above with reference to preferred embodiments, it is not limited thereto, but modifiable in a variety of ways. In particular, the invention can be varied or modified in many ways without deviating from the gist of the invention.

If the reception of the radio signal FS, for example, by a digital

Radio receiving device as audio playback device 20, which can by the

Transmitter S emitted radio signal FS wholly or partially to an individual user, or to an individual instance of the computer program product, are tuned. The control audio signal A2 may therefore be based on a Serial number of the computer program product can each be converted into different ways in the electrical control signal.

Claims

claims 1. Communication method with the steps: Transmitting (S01) a radio signal (FS) by means of a transmitting device (S), wherein in the radio signal (FS) an information audio signal (A1) with frequencies in an audible first frequency range and a control audio signal (A2) with frequencies in a second Frequency range are embedded; Receiving (S02) the radio signal (FS) by means of an audio reproduction device (20); Outputting (S03) the information audio signal (A1) and the control audio signal (A2) as sound waves (SW) by the audio reproducing device (20); Receiving (S04) the information audio signal (A1) and the control audio signal (A2) as sound waves (SW) through a microphone (12) of a mobile terminal (10) of a user (N); Converting (S05) the control audio signal into an electrical control signal by the mobile terminal (10) by means of one installed on the mobile terminal (10) A computer program product; and Transmitting (S06) information, based on the electrical control signal, in an output signal (A3) of the mobile terminal (10) to an external computing device (30); characterized in that the information audio signal (A1) and / or the control audio signal (A2) is changed in response to the transmitted output signal (A3); and the external computing device (30) is connected to the transmitting device (S) and another control signal is transmitted in response to the output signal (A3) to a control device (ST) of the transmitting device (S), based on which the radio signal (FS) is changed , The communication method according to claim 1, wherein the output signal comprises information about the mobile terminal (10) and / or about a serial number of the computer program product installed on the mobile terminal (10). A communication method according to any of the preceding claims 1 or 2, wherein the second frequency range extends completely or partially over non-audible frequencies. 4. Communication method according to one of the preceding claims 1 to 3, wherein the information audio signal (A1) and the control audio signal (A2) are superimposed as sound waves and / or output alternately. 5. Communication method according to one of the preceding claims 1 to 4 with: Operating the mobile terminal (10) based on the electrical control signal such that at least one code segment contained in the control signal in a Memory device (18) of the mobile terminal (10) is stored. 6. Communication method according to one of the preceding claims 1 to 5, wherein the output signal (A3) includes the at least one signal included in the control signal Code segment includes. The communication method according to one of the preceding claims 5 or 6, wherein the control audio signal (A2) comprises a sound sequence which is represented by the Computer program product is converted into a string according to a DTMF method; and wherein the code segment contained in the control signal comprises the string. 8. Communication method according to one of the preceding claims 1 to 7, wherein the output signal (A3) comprises an information request signal in response to which additional information is transmitted from the external computing device (30) to the mobile terminal (10). The communication method according to one of the preceding claims 1 to 8, wherein the output signal (A3) is further based on a user input of a user (N) into the mobile terminal (10). 10. Mobile terminal (10) for use in the method according to claim 1, comprising: a microphone (12), by means of which the information audio signal (A1) and the control audio signal (A2) as sound waves (SW) are receivable, wherein the information Audio signal (A1) frequencies in an audible first Frequency range, wherein the control audio signal (A2) comprises frequencies in a second frequency range; a memory device (18) in which a computer program product can be stored; a processor device (14), by means of which the computer program product stored in the memory device (18) can be executed such that by means of the Computer program product, the control audio signal (A2) is convertible into the electrical control signal; and a radio interface (16), by means of which the information, based on the electrical control signal, in the output signal (A3) of the mobile terminal (10) to the external computing device (30) can be transmitted. 1 1. A mobile terminal (10) according to claim 10, which is adapted to be worn on, on or in a body of a user (N). 12. A communication system for carrying out the method according to claim 1, comprising: the transmitting device (S), by means of which the radio signal (FS) can be emitted, wherein in the radio signal (FS) the information audio signal (A1) with frequencies in an audible first frequency range and the control audio signal (A2) is embedded with frequencies in a second frequency range; the audio playback device (20), by means of which the radio signal (FS) is receivable and by means of which furthermore the information audio signal (A1) and the control audio signal (A2) can be output as sound waves; at least one mobile terminal (10) according to one of claims 10 or 11; and the computing device (30), to which at least the output signal (A3) of the at least one mobile terminal can be transmitted.