Information processing systems and mobile devices

Abstract

To provide an information processing system and a movable body that facilitate an appropriate access to a predetermined content.SOLUTION: A system 100 includes a drone 110 with a speaker 207, a terminal 120 with a microphone 210, and a management apparatus 130 to provide a content. The drone 110 includes an acoustic transmission unit 312 that transmits an audio including an acoustic communication signal to identify the content from the speaker 207. The terminal 120 includes a content acquisition unit 323 that acquires the content based on the acoustic communication signal included in an audio picked up by the microphone 110.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to an information processing system and a moving body that access predetermined content.

Background Art

[0002] There are increasing utilization examples such as information collection and material transportation using UAVs (unmanned aerial vehicles) such as so-called drones. In particular, since drones fly in the air, it is expected to be used in places where it is difficult for people to enter, such as disaster sites, by taking advantage of their characteristics.

[0003] For example, Japanese Patent No. 6675603 (Patent Document 1) discloses a configuration including a drone-side transceiver that receives voice transmitted from a pilot-side transceiver possessed by a pilot who operates a drone body, and a speaker that amplifies and diffuses the voice output from the drone-side transceiver. According to Patent Document 1, while checking the video of the disaster site displayed on the monitor of the controller, a specific and optimal evacuation guidance instruction can be given in real time using the transceiver possessed by the pilot.

[0004] By the way, the types of disasters occurring in recent years are diverse, and the responses at the time of occurrence also vary depending on the disaster. For example, when so-called traffic jams occur, such as when roads are blocked due to heavy snow and major traffic jams occur, disaster victims in the vehicle during the traffic jam cannot move for a long time, and in some cases, it is preferable not to get out of the vehicle, so there is anxiety about fuel and food.

[0005] In this regard, conventional technologies, including Patent Document 1, can only provide evacuation guidance via voice from a drone, and cannot take appropriate action when it is preferable for people to remain inside their vehicles. Furthermore, in such disasters, relief supplies may need to be delivered to victims, but requests must be received in order to determine what supplies victims need. Requests can be received via a webpage, but if the URL of the webpage is made public, it is impossible to exclude malicious requests, such as those made for prank purposes. Therefore, there has been a need for improved convenience in technologies that allow access to specific content. [Overview of the project] [Problems that the invention aims to solve]

[0006] This invention has been made in view of the problems in the prior art described above, and aims to provide an information processing system and a mobile device that facilitate appropriate access to predetermined content. [Means for solving the problem]

[0007] In other words, according to the present invention, A system including a first device equipped with a speaker, a second device equipped with a microphone, and a third device that provides content, The first device includes means for emitting sound from the speaker, which includes an acoustic communication signal that identifies the content. The second device includes means for acquiring the content based on the acoustic communication signal contained in the sound picked up by the microphone. The system is provided. [Effects of the Invention]

[0008] According to the present invention, an information processing system and a mobile device can be provided that facilitate appropriate access to predetermined content. [Brief explanation of the drawing]

[0009] [Figure 1] A diagram showing the schematic hardware configuration of the entire system in the first embodiment. [Figure 2] A diagram showing the hardware configuration included in the device that constitutes the system of the first embodiment. [Figure 3] A software block diagram included in the system of the first embodiment. [Figure 4] A diagram illustrating an example of an acoustic communication signal in each embodiment. [Figure 5] A flowchart of the process performed by the system in the first embodiment. [Figure 6] This diagram shows examples of screens displayed in each embodiment. [Figure 7] A diagram showing the schematic hardware configuration of the entire system in the second embodiment. [Figure 8] A diagram showing the hardware configuration included in the device that constitutes the system of the second embodiment. [Figure 9] A software block diagram included in the system of the second embodiment. [Figure 10] A flowchart of the process performed by the system in the second embodiment. [Modes for carrying out the invention]

[0010] The present invention will be described below with reference to the first and second embodiments, but the present invention is not limited to the embodiments described later. In the figures referenced below, the same reference numerals will be used for common elements, and their descriptions will be omitted as appropriate.

[0011] In the embodiments described below, a drone is used as an example of a mobile body, but the embodiments are not particularly limited, and other examples include vehicles that travel on the ground, or vehicles that travel underwater or on water.

[0012] In addition, in each of the following embodiments, an example of guiding disaster victims to content that transmits a request for relief supplies is given, but the embodiments are not particularly limited. That is, it should be noted that the embodiments according to the present invention only need to appropriately allow a user who uses predetermined content to access the content.

[0013] Figure 1 is a diagram showing a schematic configuration of the hardware of the entire system 100 in the first embodiment. In the embodiment shown in Figure 1, the system 100 is an information processing system including a drone 110, a terminal 120, and a management device 130. Each device constituting the system 100 is connected via a network 140. Note that the number of drones 110 and terminals 120 is not limited to those shown in Figure 1, and there is no limit to the number included in the system 100. Also, the method of connecting from each device to the network 140 may be either wired or wireless.

[0014] The drone 110 is a moving body that can fly by remote control and move to a predetermined position. The drone 110 of the present embodiment includes a speaker and can, for example, transmit information such as the disaster situation and the prospect of recovery to the victims by voice.

[0015] The terminal 120 is an information processing device owned by the victim, and examples include a smartphone terminal. The terminal 120 of the present embodiment can identify an acoustic signal emitted by the drone 110, access predetermined content, and make a request for relief supplies from the content.

[0016] The management device 130 is an information processing device such as a server computer that provides the service according to the present embodiment. The management device 130 of the present embodiment can provide content that accepts requests from the victims. Also, the management device 130 can remotely control the flight operation of the drone 110 by the operation of the administrator.

[0017] Next, the hardware configuration of each device shown in FIG. 1 will be described. FIG. 2 is a diagram showing the hardware configuration included in the devices constituting the system 100 of the first embodiment. FIG. 2(a) shows the hardware configuration of the drone 110, FIG. 2(b) shows the hardware configuration of the terminal 120, and FIG. 2(c) shows the hardware configuration of the management device 130, respectively.

[0018] First, the hardware configuration of the drone 110 will be described. As shown in FIG. 2(a), the drone 110 of the first embodiment includes a CPU 201, a RAM 202, a ROM 203, a storage device 204, a communication I / F 205, a flight unit 206, and a speaker 207, and each hardware is connected via a bus.

[0019] The CPU 201 is a device that executes a program for controlling the operation of the drone 110 and performs predetermined processing. The RAM 202 is a volatile storage device for providing an execution space for the program executed by the CPU 201, and is used for storing and expanding programs and data. The ROM 203 is a non-volatile storage device for storing programs and firmware executed by the CPU 201.

[0020] The storage device 204 is a readable and writable non-volatile storage device that stores an OS for operating the drone 110, various software, setting information, various data, and the like. Examples of the storage device 204 include an HDD (Hard Disk Drive) and an SSD (Solid State Drive).

[0021] The communication I / F 205 connects the drone 110 to the network 140 and enables communication with other devices via the network 140. Although wireless communication is generally adopted for communication via the network 140, the embodiment is not limited thereto. Also, the communication I / F 205 can transmit and receive various data using a predetermined communication protocol such as TCP / IP.

[0022] The flight unit 206 is a device that lifts the drone 110 off the ground and performs actions such as movement and hovering in the air. For example, it can be composed of multiple propellers. The flight unit 206 may also include a gyroscope, which can stabilize the attitude of the drone 110 when it is flying autonomously.

[0023] Speaker 207 is a device that emits a predetermined sound. In the example of the embodiment described, speaker 207 can emit audio information such as the disaster situation and the prospects for recovery, as well as an acoustic communication signal that identifies content requesting relief supplies. Furthermore, speaker 207 in this embodiment may have directionality, such as a so-called parametric speaker, thereby enabling the transmission of information to specific individuals only.

[0024] Next, the hardware configuration of terminal 120 will be described. As shown in Figure 2(b), terminal 120 of the first embodiment is composed of a CPU 201, RAM 202, ROM 203, storage device 204, communication I / F 205, display 208, input device 209, and microphone 210, and each piece of hardware is connected via a bus. Note that the CPU 201, RAM 202, ROM 203, storage device 204, and communication I / F 205 of terminal 120 are the same as the hardware of drone 110 shown in Figure 2(a), so a detailed explanation will be omitted.

[0025] The display 208 is a device that displays various data and the status of the terminal 120 to the user, and examples include an LCD (Liquid Crystal Display). The input device 209 is a device for the user to operate the terminal 120, and examples include an array of multiple buttons such as a keyboard. Note that the display 208 and the input device 209 may be separate devices, or they may be a device that has both functions, such as a touch panel display.

[0026] The microphone 210 is a device that converts sound into electrical signals. In this embodiment, the microphone 210 picks up sound, including acoustic communication signals, emitted by the drone 110 and converts it into electrical signals, allowing the terminal 120 to access content requesting relief supplies.

[0027] Next, the hardware configuration of the management device 130 will be described. As shown in Figure 2(c), the management device 130 of the first embodiment is composed of a CPU 201, RAM 202, ROM 203, storage device 204, communication I / F 205, display 208, and input device 209, and each piece of hardware is connected via a bus. Since the various hardware components included in the management device 130 are the same as those of the drone 110 shown in Figure 2(a) and the terminal 120 shown in Figure 2(b), a detailed explanation will be omitted.

[0028] The hardware configurations included in each device of the first embodiment have been described above. Next, the functional means performed by each hardware in the first embodiment will be described with reference to Figure 3. Figure 3 is a software block diagram included in the system 100 of the first embodiment.

[0029] As shown in Figure 3, the drone 110 of the first embodiment includes the functional means of an aircraft control unit 311 and an acoustic transmission unit 312. The terminal 120 of the first embodiment includes the functional means of a sound collection unit 321, a sound analysis unit 322, a content acquisition unit 323, a display unit 324, and an input unit 325. The management device 130 of the first embodiment includes the functional means of a drone operation unit 331, a content provision unit 332, and an access count measurement unit 333.

[0030] First, let's describe the functional means of the drone 110. The aircraft control unit 311 is a means of controlling the flight unit 206 and performs control to move the drone 110 to a desired position by remote operation.

[0031] The acoustic transmitter 312 is a means of emitting sound by controlling the speaker 207 based on an electrical signal. The acoustic transmitter 312 in this embodiment can emit an acoustic communication signal along with the voice. The sound output by the acoustic transmitter 312 will now be described with reference to Figure 4.

[0032] Figure 4 is an illustrative diagram showing examples of acoustic communication signals in each embodiment. Figure 4(a) shows an image in which an acoustic communication signal component is embedded in the voice that provides information and output, and Figure 4(b) shows an image in which an acoustic communication signal component is output separately from the voice that provides information. In the embodiment described in Figure 4, the drone 110 broadcasts a voice to disaster victims informing them that a disaster has occurred and that they should read the acoustic communication signal contained in the sound of the broadcast using a predetermined application.

[0033] In this case, the acoustic communication signal component can be embedded in the audio, for example, as shown in Figure 4(a). In this case, the user can read the audio without being aware of the sound related to the acoustic communication signal.

[0034] On the other hand, as shown in Figure 4(b), for example, an acoustic communication signal may be output separately from the voice. In this case, the acoustic communication signal component can transmit the specified information in a much shorter time compared to when it is embedded as in Figure 4(a). Furthermore, by outputting it separately from the voice guidance, it is possible to make it easier for the user to understand and be aware of what they should read, which is particularly effective in disaster situations, in order to ensure that victims read the acoustic communication signal. In such cases, as shown in Figure 4(b), the same acoustic communication signal may be output multiple times (the number of times is not particularly limited, but in the example in Figure 4(b), it is output three times). This can improve the certainty that the user reads the acoustic communication signal.

[0035] The bandwidth of the acoustic communication signal may be in the audible range or the inaudible range. For example, if it is preferable to allow the acoustic communication signal to be heard, it can be set to the audible range of 100 Hz to 10 kHz, and if it is preferable not to allow the acoustic communication signal to be heard, it can be set to the inaudible range of 18 kHz to 20 kHz.

[0036] Returning to Figure 3, the explanation will now describe the functional means of terminal 120. The sound pickup unit 321 controls the microphone 210 and is a means for inputting sound emitted from outside terminal 120, such as from the drone 110.

[0037] The sound analysis unit 322 is a means for analyzing the sound input to the sound collection unit 321 and identifying the acoustic communication signal components contained in the sound. In the embodiment described, the acoustic communication signal includes a code (e.g., a URL) that identifies the content provided by the management device 130, and the sound analysis unit 322 can identify this code.

[0038] The content acquisition unit 323 is a means of acquiring content from the management device 130 via the communication interface 205 based on the results analyzed by the sound analysis unit 322. An example of content acquired by the content acquisition unit 323 is a website where disaster victims request relief supplies.

[0039] The display unit 324 is a means for controlling the display 208 to display a predetermined screen. In this embodiment, the display unit 324 can display content screens acquired by the content acquisition unit 323.

[0040] The input unit 325 is a means for receiving input based on the operation of the input device 209. Examples of operations include pressing a button, tapping, flicking, swiping, pinching in, and pinching out on a touch panel display. In this embodiment, the input unit 325 can, for example, receive input operations on displayed content.

[0041] Next, the functional means of the management device 130 will be described. The drone operation unit 331 is a means for remotely controlling the drone 110. Operations performed via the drone operation unit 331 are transmitted to the drone 110 via the communication I / F 205 of the management device 130, causing the drone 110 to perform the desired operation.

[0042] The content provider unit 332 is a means of providing content to the terminal 120. The content provided by the content provider unit 332 can be, for example, content requesting relief supplies. Furthermore, the content does not have to be permanently available; for example, it may be temporary content provided only for a certain period after a disaster occurs. By making the content temporary in this way, malicious access can be suppressed.

[0043] The access count measurement unit 333 is a means of measuring the number of times the content is accessed from the terminal 120. By measuring the number of accesses to the content in this way, it is possible to determine the number of disaster victims, and if there is an extremely high number of accesses, it is possible to understand that the voice guidance by the drone 110 may not be being provided properly, and countermeasures can be taken.

[0044] The software blocks described above correspond to functional means realized when the CPU 201 executes the program of this embodiment, thereby enabling each piece of hardware to function. Furthermore, the functional means shown in each embodiment may be entirely implemented in software, or some or all of them may be implemented as hardware that provides equivalent functionality.

[0045] Furthermore, the functional means described above do not necessarily have to be included in the configuration shown in Figure 3. For example, in other preferred embodiments, each functional means may be realized by the cooperation of multiple devices.

[0046] Up to this point, the configuration of system 100 in the first embodiment has been described. Next, the processes performed by system 100 will be explained with reference to Figure 5. Figure 5 is a flowchart of the processes performed by system 100 in the first embodiment.

[0047] System 100 starts processing from step S1000. In the example of the embodiment described in Figure 5, it is assumed that a disaster occurs that requires a considerable amount of time to recover from, and that relief supplies are delivered in response to requests from disaster victims.

[0048] In step S1001, the drone 110 flies to a predetermined location in the disaster area. Then, in step S1002, the drone 110 transmits sound via the speaker 207. In step S1002, the drone 110, for example as shown in Figure 4, provides voice information on how to access content requesting disaster information and necessary supplies, and also emits an acoustic communication signal containing a code to identify the content. As a result, disaster victims who hear this broadcast can recognize that they can access the content by loading the broadcast into a predetermined application on the terminal 120 (for example, an application corresponding to the sound analysis unit 322), and can perform this action.

[0049] Therefore, in the following step S1003, the sound collection unit 321 collects the broadcasted sound, and in the subsequent step S1004, the sound analysis unit 322 analyzes the sound and identifies the acoustic communication signal. Since the acoustic communication signal contains a code that identifies the content requesting relief supplies, in step S1004, based on the results of the analysis by the sound analysis unit 322, in step S1005, the content acquisition unit 323 acquires the content from the management device 130. Also, when the terminal 120 acquires the content in step S1005, in step S1006, the access count measurement unit 333 measures the number of times the content has been accessed.

[0050] Subsequently, the content acquired in step S1005 is displayed on the screen by the display unit 324 in step S1007, allowing the disaster victim to view it. In step S1008, the disaster victim inputs information about the relief supplies needed for that content.

[0051] Here, an example of the content displayed in step S1007 will be explained with reference to Figure 6. Figure 6 is a diagram showing an example of the screen displayed in each embodiment. The content first displays a screen showing disaster information, as shown in Figure 6(a). This screen includes detailed information about the disaster and a button to move to a page to request relief supplies. When a disaster victim selects this button, they are taken to a relief supplies request page, as shown in Figure 6(b). On the relief supplies request page, checkboxes for selecting the necessary supplies and input fields for the required quantities are displayed. Input fields for identifying information about the disaster victim, such as a vehicle license plate number, may also be displayed. When a disaster victim enters the necessary information on a screen like the one in Figure 6(b) and selects the send button, the data is sent to the management device 130.

[0052] Let's return to the explanation in Figure 5. After the information is entered in step S1008, in step S1009 the entered data is transmitted from terminal 120 to management device 130. This allows the administrator of management device 130 to understand the supplies needed by the disaster victims. Then, in step S1010, system 100 terminates processing.

[0053] As shown in Figure 5, the system 100 can provide content only to those who hear the sound broadcast by the drone 110. In other words, it can be guaranteed that those who can access the content are in an area where they can hear the sound from the drone 110, so it is possible to provide only specific individuals (e.g., disaster victims) with necessary temporary content (e.g., content requesting relief supplies). This eliminates malicious access, such as pranks, and ensures appropriate access to the content.

[0054] Up to this point, the first embodiment of the present invention has been described. Below, the second embodiment of the present invention will be described. In the following description of the second embodiment, matters common to the first embodiment will be omitted as appropriate, and matters that differ from the first embodiment will be mainly described.

[0055] Figure 7 shows a schematic diagram of the overall hardware configuration of the system 100 in the second embodiment. The system 100 shown in Figure 7 is composed of a drone 110, a terminal 120, and a management device 130, similar to the first embodiment. In addition to a speaker 207 that emits sound, the drone 110 in the second embodiment is equipped with a transmitter (e.g., an FM transmitter) that broadcasts radio signals to the surrounding area. As shown in Figure 7, in the second embodiment, the radio waves transmitted by the drone 110 are received by a radio receiver in the vehicle 150, and the terminal 120 accesses the content by reading the acoustic communication signal from the car radio. That is, the drone 110 in the second embodiment can emit sound from the speaker 207 and also transmit the same sound as a radio broadcast.

[0056] Next, the hardware configuration of the second embodiment will be described. Figure 8 is a diagram showing the hardware configuration included in the device that constitutes the system 100 of the second embodiment. Figure 8(a) shows the hardware configuration of the drone 110, Figure 8(b) shows the hardware configuration of the terminal 120, and Figure 8(c) shows the hardware configuration of the management device 130. Note that the hardware configurations of the terminal 120 and the management device 130 are the same as those of the first embodiment shown in Figure 2, so a detailed explanation will be omitted.

[0057] As shown in Figure 8(a), the drone 110 of the second embodiment is composed of a CPU 201, RAM 202, ROM 203, storage device 204, communication I / F 205, flight unit 206, speaker 207, and radio transmitter 211. Note that, of the hardware included in the drone 110 of the second embodiment, all components except the radio transmitter 211 are the same as those in the first embodiment shown in Figure 2, and therefore a detailed explanation is omitted.

[0058] The radio transmitter 211 is a device that transmits radio broadcast signals from the drone 110. The radio transmitter 211 of the second embodiment can modulate sound including an acoustic communication signal and transmit it on radio waves of a predetermined frequency. Furthermore, the radio transmitter 211 of the second embodiment can transmit radio waves of multiple frequencies. When transmitting radio waves of multiple frequencies, for example, voice guidance indicating that an acoustic communication signal is included can be broadcast in different languages ​​for each frequency.

[0059] For example, if there are people inside the vehicle 150 during a disaster, the sound from the speaker 207 may be difficult to hear clearly. However, as in the second embodiment described, by transmitting radio waves in conjunction with the speaker 207, voice guidance can be heard from a car radio or similar device, and acoustic communication signals can also be clearly read.

[0060] Next, the functional means constituting the system 100 of the second embodiment will be described with reference to Figure 9. Figure 9 is a software block diagram included in the system 100 of the second embodiment. Note that the functional means included in the terminal 120 and the management device 130 are the same as those in the first embodiment shown in Figure 3, so a detailed explanation will be omitted.

[0061] The drone 110 of the second embodiment includes a control unit 311, an acoustic transmitter 312, and a radio wave transmitter 313. Of the functional means included in the drone 110 of the second embodiment, the control unit 311 and the acoustic transmitter 312 are the same as those of the first embodiment shown in Figure 3, so a detailed explanation is omitted.

[0062] The radio wave transmission unit 313 is a means for controlling the radio transmitter 211, modulating the audio including the acoustic communication signal, and transmitting it as radio waves for radio broadcasting. The audio including the acoustic communication signal may be in a form in which the acoustic communication signal component is embedded in the audio component, as shown in Figure 4(a), or in a form in which the audio component and the acoustic communication signal component are separated, as shown in Figure 4(b). In the second embodiment, the radio wave transmission unit 313 can transmit radio waves to an area where there are people who are targeted to access the content, such as disaster victims.

[0063] Next, the processing in the second embodiment will be explained with reference to Figure 10. Figure 10 is a flowchart of the processing performed by system 100 in the second embodiment.

[0064] System 100 starts processing from step S2000, and in step S2001, the drone 110 flies and moves to a predetermined location in the disaster area. Note that the processing from steps S2000 to S2001 is the same as the processing from steps S1000 to S1001 in the first embodiment shown in Figure 5.

[0065] Subsequently, in step S2002, the drone 110 emits sound through the speaker 207 and transmits radio waves for a radio broadcast. In step S2002, the sound emitted from the speaker 207 and the sound from the radio broadcast may be the same or different. For example, the speaker 207 may emit a message indicating that the drone 110 is transmitting a radio broadcast at a predetermined frequency, and the radio waves at that frequency may transmit a message indicating that it is possible to receive voice communication signals from that broadcast. In addition, the drone 110 of the second embodiment may transmit sounds in different languages ​​at multiple frequencies.

[0066] Next, in step S2003, the sound pickup unit 321 picks up the broadcasted sound. The sound picked up in step S2003 may be the sound emitted from the speaker 207 of the drone 110, or it may be the sound emitted when a radio broadcast transmitted by the radio transmitter 211 of the drone 110 is received by a car radio or the like.

[0067] Subsequently, the processes from step S2004 onward are carried out. Note that the processes in steps S2004 to S2010 are the same as the processes in steps S1004 to S1010 in the first embodiment shown in Figure 5, so a detailed explanation is omitted.

[0068] As shown in Figure 10, the system 100 can provide content only to those who hear the sound broadcast by the drone 110. In other words, it can be guaranteed that those who can access the content are in an area where they can hear the sound from the drone 110 or receive the radio broadcast from the drone 110, so it is possible to provide only specific individuals (e.g., disaster victims) with necessary temporary content (e.g., content requesting relief supplies). This eliminates malicious access, such as pranks, and ensures appropriate access to the content.

[0069] According to the embodiments of the present invention described above, it is possible to provide an information processing system and a mobile device that facilitate appropriate access to predetermined content.

[0070] Each of the embodiments of the present invention described above can be implemented by a device-executable program written in C, C++, C#, Java®, etc. The program of this embodiment can be stored and distributed on a device-readable recording medium such as a hard disk drive, CD-ROM, MO, DVD, flexible disk, EEPROM®, EPROM, etc., and can also be transmitted over a network in a format that can be used by other devices.

[0071] Each of the embodiments described above can be implemented by one or more processing circuits. Hereinafter, "processing circuit" as used herein includes processors programmed to execute each function by software, such as processors implemented by electronic circuits, as well as devices such as ASICs (Application Specific Integrated Circuits), DSPs (digital signal processors), FPGAs (field programmable gate arrays), and conventional circuit modules designed to execute each of the functions described above.

[0072] Although the present invention has been described above with reference to embodiments, the present invention is not limited to the embodiments described above. It is included within the scope of the present invention as long as it achieves the effects and advantages of the present invention within the range of embodiments that a person skilled in the art could deduce. [Explanation of symbols]

[0073] 100...System, 110...Drone, 120...Terminal, 130...Management device, 140...Network, 150...Vehicle, 201...CPU, 202...RAM, 203...ROM, 204...Storage device, 205...Communication I / F, 206...Flight unit, 207...Speaker, 208...Display, 209...Input device, 210...Microphone, 211...Radio transmitter, 311...Aircraft control unit, 312...Acoustic transmitter, 313...Radio wave transmission unit, 321...Sound collection unit, 322...Sound analysis unit, 323...Content acquisition unit, 324...Display unit, 325...Input unit, 331...Drone operation unit, 332...Content provision unit, 333...Access count measurement unit [Prior art documents] [Patent Documents]

[0074] [Patent Document 1] Patent No. 6675603

Claims

1. A system including a first device equipped with a speaker, a second device equipped with a microphone, and a third device for providing content, The first device is a remotely controllable mobile body that includes means for emitting sound from the speaker, which includes an acoustic communication signal that identifies the content. The second device includes means for acquiring the content based on the acoustic communication signal contained in the sound picked up by the microphone. system.

2. The first device further comprises a transmitter that transmits radio waves modulated with sound. The system according to claim 1.

3. The radio waves include different sounds for each frequency, The speaker emits at least one of the different sounds for each frequency. The system according to claim 2.

4. The third device includes means for counting the number of accesses from the second device. The system according to any one of claims 1 to 3.

5. The acoustic communication signal is characterized in that its bandwidth is 100 Hz to 10 kHz. The system according to any one of claims 1 to 4.

6. The speaker is characterized in that it is a parametric speaker. The system according to claim 5.

7. The acoustic communication signal is characterized in that its bandwidth is 18 kHz to 20 kHz. The system according to any one of claims 1 to 4.

8. The aforementioned content is characterized by being content that requests relief supplies in the event of a disaster. The system according to any one of claims 1 to 7.

9. A mobile device equipped with a speaker and controllable from a remote location, The means includes emitting sound from the speaker that includes an acoustic communication signal that identifies the content, A mobile object.

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