JP5857669B2 - Information processing system, information receiving apparatus, information transmitting apparatus, information receiving program, and information transmitting program - Google Patents

Description

  The present invention relates to an information processing system, an information reception device, an information transmission device, an information reception program, and an information transmission program.

  In recent years, a method for searching for a device (equipment) connected to a communication network from a PC (Personal Computer), a tablet terminal, or the like and enabling connection between the devices is known. However, for example, since the search via the network is performed for devices in the same network, all devices connected to the network are searched. Therefore, for example, even when the user wants to connect to a device that is physically close to the current position, the device that is physically close cannot be determined by searching via the network.

  Therefore, in the past, in order to search for a communication partner whose location in the real world in front of you is clear and whose identification information on the communication medium is not known, a real-world event is generated and a partner who shares the real-world event is identified. A method of searching on a network is known (see, for example, Patent Document 1).

  However, in the method shown in Patent Document 1 described above, after a real-world event is generated by physical contact between one communication device and the other communication device, a shock wave pattern generated at the time of physical contact is shared. Search for a communication partner in front of you on the network. In this way, even if the shock wave pattern is shared, for example, if the same real-world event occurs in a different space, the device cannot be distinguished, so there is a possibility of connecting to an unexpected device. is there. Therefore, it may not be possible to connect to a device in a predetermined range where the distance is physically close.

  Further, when sharing of the above-described real world event fails, there is no recovery means, so it takes time to notice the failure.

  The present invention has been made in view of the above-described problems. An information processing system, an information receiving apparatus, an information transmitting apparatus, an information receiving program, and an information processing system connected to a device within a predetermined range among devices connected to a network, and An object is to provide an information transmission program.

  In order to achieve the above object, an information processing system of the present invention is an information processing system including an information transmission device connected to a predetermined network and an information reception device connected to the information transmission device, wherein the information The receiving device receives from the information transmitting device connection information of the information transmitting device and identification information of the information transmitting device via the predetermined network, and identification requesting identification information of the information transmitting device Output control means for controlling the output of the information request sound; sound analysis means for analyzing the identification information sound output from the information transmitting device in response to the identification information request sound output by the control of the output control means; Of the connection information acquired by the search means, the connection information corresponding to the identification information acquired by the sound analysis means is used to output the identification information sound. And having a communication means for connecting the multi-address transmission apparatus.

  Further, the information receiving apparatus of the present invention includes search means for acquiring connection information of the information transmitting apparatus and identification information of the information transmitting apparatus from the information transmitting apparatus connected to the predetermined network via the predetermined network. Output control means for controlling the output of an identification information request sound for requesting identification information of the information transmission apparatus, and output from the information transmission apparatus in response to the identification information request sound output by the control of the output control means. A sound analyzing unit that analyzes the identification information sound, and an information transmission that outputs the identification information sound using connection information corresponding to the identification information acquired by the sound analyzing unit among the connection information acquired by the searching unit. And communication means for connecting to the apparatus.

Also, the information transmitting apparatus of the present invention stores the storage means for storing its own unique connection information and identification information, and stores it in the storage means in response to a search request from the information receiving apparatus via a predetermined network. the connection information and the identification information, communication means for transmitting to said information receiving apparatus, output from the information receiving apparatus, in response to the identification information request sound requesting the identification information, the identification information including the identification information It has a sound creation means for creating a sound, and an output control means for controlling the output of the identification information sound created by the sound creation means.

  Further, the present invention is an information receiving program for causing a computer to function as each unit included in the information receiving apparatus described above. Further, the present invention is an information transmission program for causing a computer to function as each unit included in the information transmission apparatus described above.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to connect with the device in a predetermined range among the devices connected to the network.

It is a figure showing the outline of the information processing system concerning this embodiment. It is a figure which shows an example of the functional block of the client apparatus and host apparatus which concern on this embodiment. It is a figure which shows an example of the hardware constitutions of the client apparatus and host apparatus which concern on this embodiment. It is a figure for demonstrating an apparatus ID production | generation process sequence. It is a figure which shows an example of the management table which manages apparatus ID and connection information. It is a figure for demonstrating the connection process sequence which concerns on this embodiment. It is a figure for demonstrating the method of embedding information in sound data, and the method of taking out information from sound data. It is a flowchart which shows the flow of the apparatus ID production | generation process in the apparatus which newly joins a communication network. It is a flowchart which shows the flow of the apparatus ID change process of the apparatus with which apparatus ID overlaps. It is a flowchart which shows the flow of the connection process in a client apparatus. It is a flowchart which shows the flow of the connection process in a host apparatus. It is a flowchart which shows the flow of a connection process at the time of providing a change notification sound detection process. It is a flowchart which shows the flow of a process at the time of providing a change notification sound output process. It is a flowchart which shows the flow of a process at the time of embedding output time designation | designated information in apparatus ID request | requirement sound. It is a flowchart which shows the flow of a process when output time designation | designated information is detected from apparatus ID request | requirement sound. It is a figure for demonstrating the case where the value of the greatest common divisor of apparatus ID is embedded in apparatus ID request | requirement sound.

  In the present invention, for example, the device ID and connection information of a device connected to the network are acquired in advance via the network, and a device ID request sound is output to the device to be connected. When the device ID sound is output from the device corresponding to the device ID request sound, the connection information corresponding to the device ID included in the device ID sound among the connection information acquired in advance is connected. To do.

  Hereinafter, embodiments of the present invention will be described in detail.

<Outline of information processing system>
FIG. 1 is a diagram showing an overview of an information processing system according to this embodiment. As shown in FIG. 1, in the information processing system 100 according to the present embodiment, devices 10 in each room (for example, Room A to Room C) are connected to a communication network 1. In the present embodiment, each room assumes a space in a predetermined range where a predetermined sound can reach. For example, it is assumed that a predetermined sound output from Room A does not reach Room B or Room C.

  The devices used in the present embodiment include devices that can transmit and receive data via the communication network 1 using, for example, wireless or wired communication. For example, in the example of FIG. 1, the device 10-1 is, for example, a PC (Personal Computer), but may be a mobile terminal such as a mobile phone, a tablet terminal, or a smartphone. The device 10-2 is, for example, an MFP (Multifunction Peripheral) having a speaker function, but may be, for example, a projector that projects an image, a mobile phone, a tablet terminal, a PC, or the like.

  In the example of FIG. 1, in Room A, the device 10-2 is connected to the communication network 1, in Room B, the device 10-3 is connected to the communication network 1, and in Room C, the device 10-4 is connected to the communication network 1. ing.

  Here, the device 10-1 in Room A is connected to the communication network 1 or when the application is started up, and the device ID (device on the network) of the devices 10-2 to 10-4 connected to the communication network 1. (Identification information for identification) and connection information (for example, IP address) are searched through the communication network 1.

  Next, the device 10-1 creates, for example, a management table including a device ID and connection information based on the search result. Next, the device 10-1 refers to the management table described above and generates a unique device ID.

  In the example of FIG. 1, the device 10-1 acquires the device ID “1” and the connection information “10.100.10.1” from the RoomA device 10-2 as a result of the search via the communication network 1. The device ID “2” and the connection information “10.100.10.2” are acquired from the device 10-3 of the Room B, and the device ID “3” and the connection information “10.100.10.10” are acquired from the device 10-4 of the Room C. 3 ”is acquired and a management table is created.

  The device 10-4 selects the smallest unused number among the device IDs managed in the management table, and generates its own device ID. In the example of FIG. 1, the device 10-4 sets the device ID “4” as its own device ID.

  Further, when the device 10-1 tries to connect to the device 10-2 adjacent to Room A, first, the device ID of the devices 10-2 to 10-4 connected to the communication network 1 and the connection information are communicated. Search through the network 1 to create or update the management table described above. Next, the device 10-1 requests a sound output from the device 10-2.

  Specifically, when the device 10-1 outputs a sound requesting a device ID (device ID request sound) to the device 10-2, the device 10-2 has a sound in which its device ID is embedded ( (Device ID sound) is output. When the device 10-1 acquires the sound output from the device 10-2, it extracts the corresponding connection information from the management table using the device ID included in the acquired sound as a key, and uses the extracted connection information. Then, connection is made with the device 10-2.

  As described above, since the device 10-2 outputs a sound in which the device ID having its own uniqueness is embedded, the device 10-1 is a device in the vicinity from the device ID having a smaller amount of information than the IP address or the like. It is possible to specify the connection information. In addition, since the device 10-1 performs connection processing to only one device, it is possible to quickly retry even when erroneous sound detection or the like occurs.

  As described above, when the device 10-1 intends to connect to the device 10-2, the device 10-1 becomes a connection source and the device 10-2 becomes a connection destination. In such a case, the device 10-1 receives, for example, the device ID of the device 10-2 itself from the device 10-2, and uses the received device ID to connect to the device 10-2. It functions as a device (information receiving device). On the other hand, the device 10-2 transmits, for example, the device ID of the device 10-2 itself to the device 10-1, and functions as a host device (information transmission device) connected from the device 10-1.

  When the device 10-2 intends to connect to the device 10-1, the device 10-2 functions as a client device, and the device 10-1 functions as a host device.

<Functional Blocks of Client Device 10 and Host Device 20>
Next, each functional block when the device shown in the connection source device 10-1 is the client device 20 and the device shown in the connection destination device 10-2 is the host device 30 is shown in FIG. Will be described.

  FIG. 2 is a diagram illustrating an example of functional blocks of the client device and the host device according to the present embodiment. 2A shows an example of functional blocks of the client device 20, FIG. 2B shows an example of functional blocks of the host device 30, and FIG. 2C shows the client device 20 and the host. It is a figure which shows an example of a functional block when the apparatus 30 is set as the structure which has the same functions, such as the tablet terminal 40, for example.

  As shown in FIG. 2A, the client device 20 includes a network search unit 51, a storage unit 52, a device ID generation unit 53, a sound creation unit 54, a speaker control unit 55, and a microphone control unit 56. The sound analysis means 57, the connection information extraction means 58, the communication means 59, and the cue control means 60 are configured.

  When the network search means 51 tries to connect to a device connected to a predetermined network (that is, the host device 30), the device ID and the device ID and the device connected to the same network as the network to which the device is connected are searched. Get connection information via the network. In addition, when the sound analysis unit 57 acquires the change notification sound output from the host device 30, the network search unit 51 acquires the device ID, connection information, and the like from the device via the network and manages them in the storage unit 52. The device ID and connection information in the management table may be updated.

  The storage unit 52 stores a management table that manages the device ID and connection information of each device acquired by the network search unit 51. The storage unit 52 also manages the device ID of itself (that is, the client device 20) in the same manner, for example.

  The device ID generation unit 53 refers to a management table that manages the device ID and connection information of each device acquired by the network search unit 51 and generates its own device ID. For example, the device ID generation unit 53 reads the device ID of each device from the management table of the storage unit 52, and sets, for example, the smallest number that is not currently used as the device ID of itself (that is, the client device 20).

  In addition, when the device IDs acquired by the network search unit 51 overlap, the device ID generation unit 53 newly generates a device ID so that the device ID does not overlap, and updates the management table. Further, the device ID generation unit 53 can notify the newly generated device ID by the communication unit 59 to the device having the duplicate device ID. In this way, a unique device ID is generated.

  The sound creation unit 54 creates sound data to be output to the outside from a speaker or the like, and outputs the created sound data to the speaker control unit 55. For example, the sound creation unit 54, as a device ID request sound (identification information request sound) for requesting the device ID of the host device 30, for example, sound data that sounds a sound of a predetermined frequency from a speaker at a volume reaching a predetermined range for a certain period of time. Create

  Also, the sound creating means 54 includes output time designation information for designating the output time of the device ID sound from the host device 30 in the device ID request sound, or the device ID (storage) of each device connected to the communication network 1. The value which becomes the greatest common divisor may be included in the values of the device IDs of all devices managed in the management table of the means 52. Note that the sound creating means 54 may use a commonly used technique for embedding information in a sound, or a technique described later.

  The speaker control means (output control means) 55 controls the sound output means such as a speaker to output sound. For example, the speaker control unit 55 performs control so that the device ID request sound created by the sound creation unit 54 is output to the host device 30.

  The microphone control means 56 controls the sound collected from the outside by a sound collecting means such as a microphone, and converts the collected sound into an electrical signal.

  For example, the sound analysis unit 57 analyzes sound data collected under the control of the microphone control unit 56 and extracts information. For example, when the sound analysis unit 57 acquires the device ID sound output from the host device 30, the sound analysis unit 57 analyzes the acquired device ID sound and acquires the device ID of the host device 30. In addition, when the sound analysis unit 57 acquires the change notification sound output from the host device 30, the sound analysis unit 57 analyzes the acquired change notification sound and obtains information such as a change in the device ID of the host device 30 and a connection release from the network. get. Note that the sound analysis means 57 may use a generally used method of extracting information from a sound, or a method described later.

  The connection information extraction unit 58 extracts connection information corresponding to the device ID from the connection information of each device managed in the management table of the storage unit 52 using the device ID acquired by the sound analysis unit 57 as a key.

  The communication means 59 connects to other devices via a network, and transmits / receives data to / from other devices. For example, the communication unit 59 communicates with the host device 30 using the connection information obtained by the connection information extraction unit 58.

  The signal control means 60 detects a signal (for example, completion of update of the management table by the client device 20 or the like) that triggers the output of the device ID sound from the host device 30 and causes the host device 30 to output the device ID sound. Control.

  As shown in FIG. 2B, the host device 30 includes a microphone control means 61, a sound analysis means 62, a sound creation means 63, a speaker control means 64, a communication means 65, and a device ID generation means 66. The storage unit 67 and the sound control unit 68 are included.

  The microphone control means 61 controls the sound collected from the outside by a sound collecting means such as a microphone, and converts the collected sound into an electrical signal.

  The sound analysis unit 62 analyzes, for example, sound data collected under the control of the microphone control unit 61 and extracts information. For example, when the sound analysis unit 62 acquires the device ID request sound output from the client device 20 from the microphone control unit 61, the sound analysis unit 62 analyzes the acquired device ID request sound and includes a sound having a predetermined frequency for a predetermined time. In this case, it is determined that the device ID request sound has been received, and the sound control means 68 is notified.

  In addition, the sound analysis unit 62 analyzes the device ID request sound and acquires the output time designation information and the value that is the greatest common divisor of the device ID, and notifies the sound control unit 68 of the acquired value. Note that the sound analysis means 62 may use a generally used technique for extracting information from a sound, or a technique described later.

  For example, the sound creating unit 63 creates sound data to be output to the outside from a speaker or the like, and outputs the created sound data to the speaker control unit 64. For example, in response to a request from the sound control unit 68, the sound creation unit 63 acquires information such as its own device ID from the storage unit 67, and embeds the acquired information in the sound, for example, at a volume that reaches a predetermined range. Create ID sound. Further, the sound creating means 63, in response to a request from the sound control means 68, generates a sound including the value obtained by dividing the value of its own device ID by the value of the greatest common divisor acquired by the sound analyzing means 62, as the device ID sound. You may create as.

  In response to a request from the sound control unit 68, the sound creation unit 63 creates a change notification sound for notifying a change in its own device ID, a connection release from the network, or the like. Note that the sound creating unit 63 may use a generally used technique for embedding information in a sound, or a technique described later.

  The speaker control means (output control means) 64 controls to output sound by sound output means such as a speaker. For example, the speaker control unit 64 controls the output of the device ID sound created by the sound creation unit 63. The speaker control unit 64 controls to output the device ID sound during the output time specified in the output time specifying information in response to a request from the sound control unit 68.

  The communication means 65 is connected to other devices via a network and transmits / receives data to / from other devices. For example, the communication unit 65 acquires its own device ID and connection information from the storage unit 67 in response to a search request from another device (for example, the client device 20) via the network, and transmits it to the other device.

  When receiving the change notification with the new device ID attached from the client device 20, the device ID generation unit 66 starts exclusive control and executes device ID change processing. For example, as a device ID change process, the device ID generation unit 66 replaces its own device ID managed in the management table of the storage unit 67 with the new device ID attached to the change notification.

  In addition, when the device ID generation unit 66 receives the change notification from the client device 20 when executing the device ID change processing as exclusive control, for example, the device ID generation unit 66 rejects the change to the client device 20 that has transmitted the change notification. A notification is created and sent back by the communication means 65.

  The storage unit 67 manages, for example, its own device ID and connection information using a management table or the like.

  The sound control means 68 controls sound analysis by the sound analysis means 62 and sound creation by the sound creation means 63. For example, when the sound control means 68 obtains the device ID request sound by the sound analysis means 62, it requests the sound creation means 63 to create the device ID sound. Further, when the sound control unit 68 acquires the output time designation information for designating the output time of the device ID sound by the sound analysis unit 62, the sound control unit 68 outputs the device ID sound during the output time specified by the speaker control unit 64. Request.

  Further, when the sound control unit 68 acquires the value that is the greatest common divisor of the device ID from the device ID request sound by the sound analysis unit 62, the value of the device ID of the device itself is the value of the greatest common divisor acquired by the sound creation unit 63. A request is made to create a sound including a value obtained by dividing as a device ID sound.

  The sound control unit 68 performs, for example, device ID change processing by the device ID generation unit 66 during the generation of the device ID sound by the sound generation unit 63 or during the output of the device ID sound by the control of the speaker control unit 64. When the execution is detected, it is determined that its own device ID has been changed. When the communication means 65 notifies the sound control means 68 that the connection from the network is released, the sound control means 68 determines that the connection from the network has been released. As described above, when the sound control unit 68 detects the change of its own device ID or the disconnection of the network, it requests the sound generation unit 63 to generate the change notification sound.

  Note that when the client device 20 and the host device 30 are configured to have similar functions, such as a tablet terminal, for example, they have functions as shown in FIG.

  The microphone control means 70 corresponds to the microphone control means 56 and the microphone control means 61, the sound analysis means 71 corresponds to the sound analysis means 57 and the sound analysis means 62, and the connection information extraction means 72 corresponds to the connection information extraction means 58. The sound control means 73 corresponds to the sound control means 68.

  The communication unit 74 corresponds to the communication unit 59 and the communication unit 65, the storage unit 75 corresponds to the storage unit 52 and the storage unit 67, and the device ID generation unit 76 includes the device ID generation unit 53 and the device ID generation. The network search means 77 corresponds to the means 66 and the network search means 51 corresponds.

  Further, the cue control means 78 corresponds to the cue control means 60, the sound creation means 79 corresponds to the sound creation means 54 and the sound creation means 63, and the speaker control means 80 corresponds to the speaker control means 55 and the speaker control means 64. It corresponds to.

  As described above, since the tablet terminal 40 shown in FIG. 2C can be the client device 20 and the host device 30 described above, the tablet terminal 40 operates as the client device 20 or the host device 30 according to the user's selection or the like. At least one of the functional blocks is selectively used.

  In the following description, the client device 20 and the host device 30 will be specifically described for convenience. However, as described above, the client device 20 and the host device 30 are both tablet terminals shown in FIG. Each embodiment described later can be realized by the configuration of 40.

<Hardware Configuration of Client Device 20 and Host Device 30>
Next, hardware configurations of the client device 20 and the host device 30 described above will be described with reference to the drawings. FIG. 3 is a diagram illustrating an example of a hardware configuration of the client device and the host device according to the present embodiment.

  As shown in FIG. 3, the client device 20 and the host device 30 include an input device 81, a display device 82, a drive device 83, a RAM (Random Access Memory) 84, a ROM (Read Only Memory) 85, and a CPU. (Central Processing Unit) 86, interface device 87, HDD (Hard Disk Drive) 88, and the like are connected to each other via bus B.

  The input device 81 includes a touch panel, for example, and is used to input each operation signal to the client device 20 and the host device 30. The display device 82 includes a display and the like, and displays processing results by the client device 20 and the host device 30.

  The drive device 83 is an interface with a detachable recording medium 83a. Accordingly, the client device 20 and the host device 30 can read and / or write the recording medium 83a via the drive device 83. Examples of the recording medium 83a include an SD memory card (SD Memory Card) and a USB (Universal Serial Bus) memory.

  The RAM 84 is a volatile semiconductor memory (storage device) that temporarily holds programs and data for realizing the present embodiment.

  The ROM 85 is a nonvolatile semiconductor memory (storage device) that can retain internal data even when the power is turned off. The ROM 85 stores programs and data such as BIOS (Basic Input / Output System), system settings, and network settings that are executed when the client device 20 and the host device 30 are activated.

  The CPU 86 is a processing device that implements control and mounting functions of the entire device by reading a program or data from a storage device (eg, “HDD” or “ROM”) onto a RAM (memory) and executing the processing. is there.

  The interface device 87 is an interface that connects the client device 20 and the host device 30 described above to a transmission path such as a wired or wireless network. Accordingly, the client device 20 and the host device 30 can perform data communication with other external devices via the interface device 87.

  The HDD 88 is a non-volatile storage device that stores programs and data. The stored programs and data include a system that controls the entire client device 20 and the host device 30 (for example, an OS (Operating System) that is basic software such as “Windows (registered trademark)” or “UNIX (registered trademark))”. And applications that provide various functions on the system. The HDD 88 manages the stored programs and data using a predetermined file system and / or DB (Data Base).

  In addition to the hardware configuration described above, the host device 30 may have a configuration in which a projector that projects image data onto a screen or the like is connected to the bus B.

  The client device 20 and the host device 30 can provide various processes with the above-described hardware configuration.

<Device ID generation processing>
Next, a device ID generation process sequence of devices connected to the communication network 1 described above will be described with reference to the drawings. FIG. 4 is a diagram for explaining a device ID generation processing sequence.

  In the example of FIG. 4, it is assumed that the device 10A that newly joins the network functions as the client device 20, and the device 10B on the same network functions as the host device 30, but in the present invention this is described. The device 10A newly joining the network and the device 10B on the same network can be both the client device 20 and the host device 30.

  As shown in FIG. 4, the device 10 </ b> A (for example, the client device 20) newly participating in the network is connected on the same network (that is, the communication network 1) by the network search unit 51 when connecting to the communication network 1, for example. The device 10B (for example, the host device 30) that is being searched is searched (S10).

  Next, the device 10A newly participating in the network acquires a device ID and connection information from each device 10B searched by the network search means 51 (S11). In addition, although the process of S10 and S11 mentioned above can loop, for example as a break condition, for example until it exceeds the number of the apparatuses 10B on the same network, it is not limited to this in this invention.

  Next, the device 10A newly joining the network creates a management table in the storage unit 52 based on the acquired device ID and connection information of each device 10B by the network search unit 51 (S12), and generates a device ID. The device 53 generates its own device ID (S13).

  In the process of S13, for example, the device ID generation unit 53 refers to, for example, the device ID of the management table created in the process of S12, and sets the minimum value that does not exist in the referenced management table as the value of its own device ID. Thus, a unique device ID is generated.

<Management table>
Next, a management table generated by the device 10A (client device 20 in the example of FIG. 4) newly participating in the communication network 1 described above will be described with reference to the drawings. FIG. 5 is a diagram illustrating an example of a management table for managing device IDs and connection information.

  The management table shown in FIG. 5 includes, for example, “device ID” and “connection information”, but the present invention is not limited to this. As shown in FIG. 5, the management table sets the connection information corresponding to the device ID “1” to “10.100.10.1” and the connection information corresponding to the device ID “2” to “10.100.10. .2 ”and the connection information corresponding to the device ID“ 3 ”is managed as“ 10.100.10.3 ”. The device ID may include information related to the device type such as a PC, a mobile terminal, or an MFP.

  As described above, in the management table, a combination including at least a device ID and connection information is managed. For example, the device 10A newly participating in the communication network 1 refers to the management table shown in FIG. 5 and determines that the minimum value that does not exist in the management table is “4”, and sets the value of its own device ID to “4”. "

  If the device 10 that already has the device ID is removed from the communication network 1, the device ID in the management table becomes empty, so that the device 10A that newly joins the communication network 1 is free. Among the values of the device IDs, the smallest value may be the value of the device ID of itself. For example, in the management table shown in FIG. 5, when the device 10 with the device ID “2” leaves the communication network 1, the value of the device ID “2” becomes empty, so the device 10 newly joins the communication network 1. The device 10 </ b> A that performs the operation may have a device ID value “2”.

  By using the management table described above, the device 10A (client device 20 in the example of FIG. 4) newly participating in the communication network 1 may use the device ID value for which uniqueness is guaranteed as its device ID. It becomes possible.

<Connection processing sequence>
Next, a connection processing sequence performed by the client device 20 attempting to connect to the host device 30 connected to the communication network 1 will be described with reference to the drawings. FIG. 6 is a diagram for explaining a connection processing sequence according to the present embodiment.

  As shown in FIG. 6, the client device 20 acquires the device ID and connection information of the host device 30 connected to the communication network 1 by the network search unit 51, and stores the management table stored in the storage unit 52. Update (S20).

  Next, the client device 20 controls the speaker control unit 55 to output the device ID request sound created by the sound creation unit 54 to the host device 30 (S21). When the host device 30 analyzes the sound collected by the microphone control means 61 by the sound analysis means 62 and detects a device ID request sound, the sound creation means 63 creates a device ID sound including its own device ID. Then, the speaker control means 64 controls to output the device ID sound (S22).

  When the client device 20 acquires the device ID sound by the microphone control means 56, the sound analysis means 57 analyzes the device ID sound and acquires the device ID. Further, the client device 20 reads the connection information corresponding to the device ID sound by referring to the management table updated in the processing of S20 by the connection information extracting means 58 (S23).

  Next, the client device 20 connects to the host device 30 via the network using the connection information read out in the processing of S23 by the communication unit 59 (S24).

  Note that the client device 20 embeds output time designation information for designating the time for outputting the device ID sound from the host device 30 in the device ID request sound output in the process of S21 described above, and the device output from the host device 30. The output time of the ID sound may be adjusted. At this time, the host device 30 outputs a device ID sound during the designated output time.

<Method of embedding information in sound data and method of extracting information from sound data>
Next, a method of embedding information in sound data by the sound creation means 54 of the client device 20 and the sound creation means 63 of the host device 30 will be described with reference to the drawings. FIG. 7 is a diagram for explaining a method of embedding information in sound data and a method of extracting information from sound data.

  FIG. 7A is a diagram for explaining a method of embedding information in sound data. In the example of FIG. 7A, for example, a technique for embedding a number “94” used for a device ID, connection information, or the like in a sound (ie, a sound) is shown.

  As shown in FIG. 7A, the sound with the frequency f1 (Hz) is output for t1 time, and the sound with the frequency f2 (Hz) is output for t2 time. For example, the sound creation means 54 of the client device 20 and the sound creation means 63 of the host device 30 output a sound of a predetermined frequency f1 (Hz) set in advance as a start signal of numerical information.

  If a sound with a predetermined frequency f2 (Hz) set in advance is output for t2 time, a binary number "1" is set. If a sound with a frequency f2 (Hz) is not output for t2 time, a binary number "0" is set.

  The sound creation means 54 of the client device 20 and the sound creation means 63 of the host device 30 convert the number “94” into a binary number “0101110” and, as shown in FIG. 7A, a sound having a frequency f1 (Hz). Is output for t1 time, and then a period in which sound of frequency f2 (Hz) is not output and a period in which sound is output for t2 are combined. Thereby, the information of the binary number “01011010” obtained by converting the number “94” is embedded in the sound. When an IP address is embedded in the sound, it is preferable to continue the sound and represent, for example, four numbers.

  As described above, the sound output time becomes longer according to the amount of information embedded in the sound. Therefore, the sound creation means 54 of the client device 20 and the sound creation means 63 of the host device 30 may embed a dedicated code so that the reception side can recognize the start and end of the sound in addition to the start signal of the sound, for example. . The sound analysis means 57 of the client device 20 and the sound analysis means 62 of the host device 30 can acquire the sound between them as connection information by recognizing the code indicating the start and end of the sound.

  FIG. 7B is a diagram for explaining a method of extracting information from sound data. In the example of FIG. 7B, the horizontal axis indicates the frequency (Hz) and the vertical axis indicates the sound amplitude.

  When information is embedded in the sound by the method shown in FIG. 7A described above, the sound analysis means 62 of the client device 20 and the host device 30 is controlled by the microphone control means 56 of the client device 20 or the microphone control of the host device 30. The sound data acquired from the means 61 is subjected to, for example, FFT (Fast Fourier Transform) to extract a frequency component, and for example, it is determined whether or not a sound of frequency f1 (Hz) is emitted.

  As shown in FIG. 7B, when a sound having a frequency f1 (Hz) is emitted, a peak appears in the frequency f1 (Hz) portion. The sound analysis means 57 of the client device 20 and the sound analysis means 62 of the host device 30 detect the sound with the frequency f1 (Hz), and similarly apply the FFT to determine whether the sound with the frequency f2 (Hz) is emitted. When the sound having the frequency f2 (Hz) is output for t2 time, “1” is determined, and when the sound having the frequency f2 (Hz) is not output, “0” is determined.

  The sound analysis means 57 of the client device 20 and the sound analysis means 62 of the host device 30 can extract the number “94” by acquiring the number “01011110” embedded in the sound and then converting it to a decimal number. It becomes. In the case of acquiring an IP address, four decimal numbers may be similarly extracted.

  In addition, there are cases where information embedded due to noise during transmission cannot be obtained accurately. Therefore, the sound analysis means 57 of the client device 20 and the sound analysis means 62 of the host device 30 read the same signal a predetermined number of times in order to improve the accuracy when the embedded information is authenticated, A numerical value may be extracted by statistically judging the analysis result.

  At this time, the speaker control means 55 of the client device 20 and the speaker control means 64 of the host device 30 are preferably controlled to repeatedly output the same signal for a predetermined number of times or for a predetermined time. Further, the accuracy of the numbers to be extracted may be improved by using a commonly used error detection code, error correction code, or the like.

<Device ID generation processing in devices newly participating in the communication network>
Next, device ID generation processing of the device 10A newly participating in the communication network shown in FIG. 4 will be described with reference to the drawings. FIG. 8 is a flowchart showing a flow of device ID generation processing in a device newly participating in the communication network.

  As in FIG. 4, the device 10 </ b> A that newly joins the network functions as the client device 20, and the device 10 </ b> B on the same network functions as the host device 30. The device 10A and the device 10B on the same network can be both the client device 20 and the host device 30.

  As shown in FIG. 8, a device 10A (for example, the client device 20) newly participating in the communication network 1 is connected to the same network (that is, the communication network 1) by the network search means 51 (for example, a host 10B). The device 30) is searched (S30), the device ID and the connection information are acquired from the searched device 10B, and a management table is created (S31).

  Here, the device ID generation unit 53 determines whether there is a duplicate device ID in the management table created in the process of S31 (S32). When it is determined that there is a duplicate device ID (YES in S32), the device ID generation unit 53 newly determines a device ID of the device 10B having the duplicate device ID (S33). For example, the device ID generation unit 53 may determine the device ID based on a free device ID or the like with reference to the management table created in the process of S31.

  The device ID generating unit 53 notifies the device ID determined in S33 to the device 10B having the duplicated device ID by the communication unit 59 (S34), and the notified device 10B is notified within a predetermined period. It is determined whether or not a rejection notice has been received from (S35).

  If the device ID generation unit 53 determines that a rejection notification has been received from the notified device 10B within a predetermined period (YES in S35), the device ID generation unit 53 returns to the process of S30. Thereby, it becomes possible to synchronize the change of the device ID of the device 10 connected to the communication network 1, and it is possible to generate its own device ID after knowing the change of the device ID.

  Further, when it is determined that the rejection notification has not been received from the notified device 10B within the predetermined period (NO in S35), it is determined whether the change completion notification has been received from the notified device 10B within the predetermined period ( S36).

  If the device ID generation unit 53 determines that a change completion notification has been received from the notified device 10B within a predetermined period (YES in S36), the device ID generation unit 53 returns to the process of S30. If it is determined that the change completion notification has not been received from the notified device within the predetermined period (NO in S36), it is determined whether or not the number of notifications is within a specified number (S37).

  If the device ID generation unit 53 determines that the number of notifications is within the specified number (YES in S37), the device ID generation unit 53 returns to the process of S34. If it is determined that the number of notifications is not within the specified number (NO in S37), the process returns to S30. If the number of notifications is not within the specified number of times, that is, if a notification of completion for a certain period is not received, the device ID generation unit 53 determines that the notification does not reach the device 10B due to packet loss due to network congestion, and Only the change request may be transmitted via the Internet.

  In addition, when it is determined that there is no duplicate device ID (NO in S32), the device ID generation unit 53 determines whether or not it already has its own device ID (S38). If it is determined that it does not already have its own device ID (NO in S38), the management table created in the process of S31 is referred to, and the smallest value that does not exist in the table is set as its own device ID (S39). Return to the process.

  Note that the device ID generation means 39 may return to the processing of S30 in order to perform a re-search after the processing of S39 at random. That is, if a plurality of devices 10 participating in the communication network 1 perform device ID generation processing at the same timing, there is a possibility of duplication. Therefore, after generating a device ID, after a random time has passed, Return to the process and update the management table. Thereby, it is possible to secure the uniqueness of the device ID by shifting the timing of the re-search.

  If device ID generation means 53 determines that it already has its own device ID (YES in S38), it ends the process.

<Device ID change processing for devices with duplicate device IDs>
Next, device ID change processing of the device 10B having the same device ID among the devices 10B on the same network (that is, the communication network 1) shown in FIG. 4 will be described with reference to the drawings. FIG. 9 is a flowchart showing the flow of device ID change processing for devices with overlapping device IDs.

  As illustrated in FIG. 9, among the devices 10B (that is, the host devices 30) connected to the communication network 1, the device 10B having a duplicate device ID is, for example, a device 10A (for example, a client) that newly joins the network. The device ID change notification with the new device ID attached is received by the communication means 65 from the device 20) (S40).

  The device 10B having the duplicate device ID starts exclusive control by the device ID generation means 66 (S41), and executes device ID change processing (S42). For example, the device ID generation unit 66 replaces its own device ID managed in the management table of the storage unit 67 with the new device ID attached to the change notification.

  Here, the device ID generation unit 66 determines whether or not another device ID change notification has been received during the exclusive control in S41 (S43), and if another device ID change notification has been received (in S43). YES), a rejection notification is returned to the client device 20 that has transmitted another device ID change notification by the communication means 65 (S46).

  On the other hand, if another device ID change notification has not been received (NO in S43), a change completion notification notifying that the change to the new device ID has been completed is transmitted to the client device 20 (S44), and exclusive control is performed. (S45), and the process ends.

<Connection Process in Client Device 20>
Next, the connection process of the client apparatus 20 shown in FIG. 6 will be described with reference to the drawings. FIG. 10 is a flowchart showing the flow of connection processing in the client device.

  As shown in FIG. 10, when the client device 20 tries to connect to the host device 30 connected to the communication network 1, first, the network search unit 51 searches for the device 10 connected to the communication network 1. Then, the device ID and connection information of each device 10 is acquired from the retrieved device 10, and the management table is updated (S51). The management table updated in the process of S51 is the same as the management table created by the processes of S30 to S37 shown in FIG.

  Next, when the signal control unit 60 detects that the processing of S51 is completed, the client device 20 generates a device ID request sound by the sound generation unit 54 and controls the speaker control unit 55 to control the device ID. A request sound is output (S52).

  Next, the client device 20 starts listening to the sound under the control of the microphone control means 56 (S53), analyzes the sound with the sound analysis means 57 (S54), and outputs the device ID sound output from the host device 30. It is determined whether or not it has been detected (S55).

  When sound analysis means 57 determines that a device ID sound has been detected (YES in S55), it acquires a device ID from the device ID sound (S56).

  The connection information extraction unit 58 determines whether or not the acquired device ID exists in the management table stored in the storage unit 52 (S57). If the connection information extraction unit 58 determines that the device ID exists (YES in S57), the management information is extracted. Connection information corresponding to the device ID is extracted from the table, and the listening of the sound under the control of the microphone control means 56 is terminated (S58).

  When the sound analysis unit 57 determines that the device ID sound is not detected (NO in S55), or when the connection information extraction unit 58 determines that the device ID acquired in the management table does not exist ( In S57, NO), the process returns to S54.

  The communication unit 59 uses the connection information extracted by the connection information extraction unit 58 to connect to the host device 30 via the network (S59).

  Note that the communication unit 59 determines whether or not the connection to the host apparatus 30 has been established by the process of S59 (S60), and when determining that the connection has been established (YES in S60), the process ends. Further, when the communication unit 59 determines that the connection with the host device 30 cannot be established by the process of S59 (NO in S60), the communication unit 59 returns to the process of S59.

<Connection process in host device 30>
Next, the connection processing of the host device 30 shown in FIG. 6 will be described with reference to the drawings. FIG. 11 is a flowchart showing the flow of connection processing in the host device.

  As shown in FIG. 11, the host device 30 starts listening for sound under the control of the microphone control unit 61, analyzes the sound with the sound analysis unit 62, and outputs the device ID request sound output from the client device 20. Upon acquisition (S61), the sound creation means 63 creates a device ID sound under the control of the sound control means 68 (S62).

  Next, the host device 30 outputs the device ID sound created by the sound creation means 63 under the control of the speaker control means 64 (S63).

<Change Notification Sound Detection Processing in Client Device 20>
Next, a process when a change notification sound detection process is provided in the connection process in the client apparatus 20 shown in FIG. 10 described above will be described with reference to the drawings. FIG. 12 is a flowchart showing the flow of the connection process when the change notification sound detection process is provided.

  Of the processes of S70 to S82 shown in FIG. 12, the processes of S70 to S75 and S77 to S81 are the same as the processes of S50 to S55 and S56 to S60 shown in FIG. Specific description here will be omitted, and only different processing will be described.

  As illustrated in FIG. 12, when the client device 20 detects the device ID sound output from the host device 30 in the process of S75 (YES in S75), the change output from the host device 30 by the sound analysis unit 62. It is determined whether or not a notification sound has been detected (S76). If sound analysis means 62 determines that no change notification sound has been detected (NO in S76), it proceeds to the process of S77.

  On the other hand, when the sound analysis unit 62 determines that the change notification sound has been detected (YES in S76), the sound analysis unit 62 determines that the change content included in the change notification sound is a change in the device ID of the host device 30 or the host. It is determined whether or not the connection of the device 30 from the network is canceled (S82). If the sound analysis unit 62 determines that the change content is a change in the device ID (NO in S82), the sound analysis unit 62 returns to the process of S70. If the change content of the change notification sound is determined to be a connection release from the network (YES in S82), the sound analysis unit 62 ends the process.

<Change notification sound output processing in the host device 30>
Next, processing when the change notification sound output processing is provided in the processing of the host device 30 shown in FIG. 11 described above will be described with reference to the drawings. FIG. 13 is a flowchart showing a process flow when a change notification sound output process is provided. Of the processes of S90 to S95 shown in FIG. 13, the processes of S90 and S91 are the same as the processes of S61 and S62 shown in FIG. Only the processing will be described.

  As shown in FIG. 13, after the process of S91, the host device 30 determines whether the device ID of itself (that is, the host device 30) has been changed or the connection from the network has been released by the sound control means 68. (S92). Here, for example, when the sound control unit 68 detects the execution of the device ID change process by the device ID generation unit 66, the sound control unit 68 determines that its own device ID has been changed, and notifies the communication unit 65 of the disconnection from the network. If it is, it is determined that the connection from the network has been released.

  If the sound control means 68 determines that the device ID has been changed or the connection from the network has been released (YES in S92), the sound creation means 63 notifies the change notification for notifying the change of the device ID or the disconnection from the network. A sound is created and a change notification sound is output under the control of the speaker control means 64 (S95).

  If the sound control unit 68 determines that the device ID has not been changed or the connection from the network has not been released (NO in S92), the sound of the device ID created by the process of S91 is controlled by the speaker control unit 64. Output (S93).

  Further, after the processing of S93, the sound control means 68 determines whether the device ID has been changed or the connection from the network has been released as in the processing of S92 (S94). If it is determined that the connection has been released (YES in S94), the process of S95 is continued. If the host device 30 determines that the device ID has not been changed or the connection from the network has not been released (NO in S94), the host device 30 ends the process.

  As described above, after creating the device ID sound and outputting the device ID sound, the host device 30 can notify the client device 20 of the change of the device ID or the disconnection from the network. . Therefore, the client device 20 can cope with the change of the device ID of the host device 30 or the disconnection from the network even after the management table is updated. In addition, since the host device 30 notifies the release of the connection from the network via sound, it is possible to notify that even after the connection from the communication network 1 is released.

<Processing when output time specification information is embedded in device ID request sound>
Next, a process when the output time designation information for designating the time for outputting the device ID sound from the host device 30 is embedded in the device ID request sound created in the process of S52 of the client device 20 shown in FIG. This will be described with reference to the drawings. FIG. 14 is a flowchart showing the flow of processing when output time designation information is embedded in the device ID request sound.

  Of the processes of S100 to S111 shown in FIG. 14, the processes of S100 and S101, the processes of S103, and the processes of S107 to S111 are respectively the processes of S50 and S51, the processes of S53, and the processes of S57 to S60 shown in FIG. For the same process, a specific description is omitted here, and only a different process is described.

  As shown in FIG. 14, when the client device 20 detects that the processing of S101 is completed by the signal control means 60, the sound creation means 54 outputs that designates a time for outputting the device ID sound from the host device 30. A device ID request sound in which time designation information is embedded is generated.

  Further, the client device 20 outputs the device ID request sound created by the sound creation means 54 under the control of the speaker control means 55 (S102).

  Next, the client apparatus 20 analyzes the sound by the sound analysis means 57, records the sound listening time under the control of the microphone control means 56 in S103 (S104), and outputs the device ID request sound by the process of S102. From this, it is determined whether it is within a specified period (output time embedded in the device ID request sound) (S105).

  If the client device 20 determines that it is within the specified period (YES in S105), the process returns to S104. If it is determined that it is not within the specified period (NO in S105), the device ID sound acquired by the sound analysis unit 57 within the specified period is stored in the storage unit 52, and the device ID sound with the largest number of acquisitions is selected. (S106), the process of S107 is continued.

  As described above, the client device 20 extracts the connection information of the device ID that is recorded most frequently among the plurality of device IDs acquired within the specified period. That is, by increasing the time during which the device ID sound is output, it is possible to acquire more device IDs accordingly, thereby improving the accuracy of acquiring the device ID.

<Processing when output time designation information is detected from device ID request sound>
Next, the processing when output time designation information is detected from the device ID request sound in the processing of S61 of the host device 30 shown in FIG. 11 will be described with reference to the drawings. FIG. 15 is a flowchart showing the flow of processing when output time designation information is detected from the device ID request sound.

  Of the processes of S120 to S123 shown in FIG. 15, the processes of S121 and S122 are the same as the processes of S62 and S63 shown in FIG. explain.

  As shown in FIG. 15, the host device 30 starts listening to the sound under the control of the microphone control means 61, analyzes the sound with the sound analysis means 62, and from the device ID request sound output from the client device 20, Output time specifying information specifying the time for outputting the device ID sound is acquired (S120).

  The sound control unit 68 outputs the device ID sound by the control of the speaker control unit 64 in the process of S122, and then acquires the device ID request sound in the process of S120, and then is specified period (designated by the output time designation information). It is determined whether it is within the output time) (S123).

  If the sound control means 68 determines that it is within the specified period (YES in S123), the process returns to the process of S122, and the speaker control means 64 controls to repeat the output of the device ID sound. If it is determined that it is not within the specified period (NO in S123), the process is terminated.

<When embedding the value of the greatest common divisor of the device ID in the device ID request sound>
Next, the case where the value of the greatest common divisor of all device IDs managed in the management table is embedded in the device ID request sound generated by the client device 20 described above will be described with reference to the drawings. FIG. 16 is a diagram for explaining the case where the value of the greatest common divisor of the device ID is embedded in the device ID request sound.

  As illustrated in FIG. 16, the client device 20 uses the sound creation unit 54 to refer to the management table in the storage unit 52 after the processing of S51 in FIG. A value that is the greatest common divisor of 10 device IDs is obtained, and the obtained value is included in the device ID request sound.

  In the example of FIG. 16, since the device ID values managed in the management table are “10”, “100”, and “1000”, the sound creating unit 54 determines that all the devices 10 managed in the management table. The greatest common divisor of the device ID is calculated as “10”, and the value of the greatest common divisor “10” is embedded in the device ID request sound.

  When the sound analysis unit 62 obtains the greatest common divisor value “10” from the device ID request sound by the sound analysis unit 62, the host device 30 obtains the greatest common divisor value “10” from the device ID request sound by the sound creation unit 63. A value (1000/10 = 100) divided by the device ID “1000”) is calculated. The sound creating unit 63 creates a sound including the calculated value “100” as a device ID sound and outputs the sound under the control of the speaker control unit 55.

  When the client device 20 acquires the value “100” included in the device ID sound by the sound analysis unit 57, the client device 20 multiplies the acquired value by the value of the greatest common divisor (100 × 10 = 1000). Considered as the value of the device ID. Further, when the client device 20 acquires the connection information “10.100.10.3” corresponding to the device ID “1000” from the management table by the connection information extraction unit 58, the connection unit “10. 100.10.3 "to connect to the host device 30.

  Thus, when the client device 20 embeds the value of the greatest common divisor of the device IDs of all the devices 10 managed in the management table in the device ID request sound, the host device 30 includes the device ID included in the device ID sound. It is possible to further reduce the amount of information.

  As described above, according to the embodiment of the present invention, it is possible to connect to a device within a predetermined range among devices connected to the network.

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to such specific embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims. Can be changed.

1 Communication network 10 Device 20 Client device 30 Host device 40 Tablet terminal 51, 77 Network search means 52, 67, 75 Storage means 53, 66, 76 Device ID generation means 54, 63, 79 Sound creation means 55, 64, 80 Speaker Control means 56, 61, 70 Microphone control means 57, 62, 71 Sound analysis means 58, 72 Connection information extraction means 59, 65, 74 Communication means 60, 78 Signal control means 68, 73 Sound control means 81 Input device 82 Display device 83 Drive device 83a Recording medium 84 RAM
85 ROM
86 CPU
87 Interface device 88 HDD
100 Information processing system

Japanese Patent No. 4074998

Claims (11)

An information processing system having an information transmitting device connected to a predetermined network and an information receiving device connected to the information transmitting device,
The information receiving device includes:
Search means for acquiring connection information of the information transmission device and identification information of the information transmission device from the information transmission device via the predetermined network;
Output control means for controlling output of identification information request sound for requesting identification information of the information transmitting device;
Sound analysis means for analyzing the identification information sound output from the information transmitting device in response to the identification information request sound output by the control of the output control means;
A communication unit that connects to the information transmission device that outputs the identification information sound using the connection information corresponding to the identification information acquired by the sound analysis unit out of the connection information acquired by the search unit. Information processing system. Search means for acquiring connection information of the information transmission device and identification information of the information transmission device from the information transmission device connected to the predetermined network via the predetermined network;
Output control means for controlling output of identification information request sound for requesting identification information of the information transmitting device;
Sound analysis means for analyzing the identification information sound output from the information transmitting device in response to the identification information request sound output by the control of the output control means;
A communication unit that connects to the information transmission device that outputs the identification information sound using the connection information corresponding to the identification information acquired by the sound analysis unit out of the connection information acquired by the search unit. Information receiving device. The search means includes
When the sound analysis means obtains a change notification sound for notifying the change of the identification information or the disconnection from the predetermined network from the information transmitting apparatus that has output the identification information sound, the connection information is transmitted via the network. The information receiving apparatus according to claim 2, further comprising: acquiring the identification information and updating the connection information and the identification information. The identification information request sound is
4. The information receiving apparatus according to claim 2, further comprising output time specifying information for specifying an output time of the identification information sound. The identification information request sound is
The information receiving apparatus according to claim 2, comprising a value that is a greatest common divisor of identification information of the information transmitting apparatus. Storage means for storing own connection information and identification information having uniqueness ;
In response to a search request from the information receiving apparatus according to via a predetermined network, the connection information and the identification information stored in the storage means, communication means for transmitting to said information receiving apparatus,
The output from the information receiving apparatus, in response to the identification information request sound requesting the identification information, and sound creation means for creating identification information sound including the identification information,
And an output control means for controlling the output of the identification information sound created by the sound creating means. The sound creating means
The information transmitting apparatus according to claim 6, wherein a change notification sound for notifying the change of the identification information or the disconnection from the predetermined network is created. A sound analysis means for analyzing the identification information request sound;
The output control means includes
When the sound analysis means obtains output time designation information for designating the output time of the identification information sound from the identification information request sound, the identification information sound is output during the output time designated in the output time designation information. 8. The information transmitting apparatus according to claim 6, wherein the information transmitting apparatus is controlled to output the information. The sound creating means
When the sound analysis means obtains a value that is the greatest common divisor of the identification information from the identification information request sound, a value obtained by dividing the value of the identification information of the information transmitting apparatus by the value of the greatest common divisor of the identification information The information transmitting apparatus according to claim 8, wherein a sound including a sound is generated as the identification information sound.   An information receiving program for causing a computer to function as each unit included in the information receiving apparatus according to any one of claims 2 to 5.   The information transmission program for functioning a computer as each means which the information transmission apparatus as described in any one of Claims 6 thru | or 9 has.

Images