Terminal device, program and information processing system

Abstract

A terminal device, a program, and an information processing system are provided that efficiently perform interconnections based on the use of an information processing device. [Solution] In an information processing system, a display terminal includes a wired communication unit capable of connecting to an external information processing device via a wired connection, a wireless communication unit that connects wirelessly to the information processing device, a setting information acquisition unit that acquires setting information for connecting wirelessly to the information processing device from the wired-connected information processing device via the wired communication unit, a communication control unit that establishes a wireless connection with the information processing device via the wireless communication unit based on the setting information acquired by the setting information acquisition unit, and a display control unit that, when a wireless connection is established, displays on the display unit an operation screen that allows the use of functions possessed by the information processing device and is provided by the information processing device via the wireless communication unit, and when a wireless connection with the information processing device cannot be established, the operation screen is acquired from the information processing device via the wired communication unit and displayed on the display unit.

Description

[Technical Field]

[0001] The present invention relates to a terminal device, a program, and an information processing system. [Background technology]

[0002] Conventionally, there have been systems in which an information processing device specialized for arithmetic processing or the like is prepared, and by wirelessly connecting to the information processing device, functions of the information processing device can be used by a wirelessly connected terminal device. Furthermore, the information processing device in such systems often does not have a display device or the like, and the information processing device provides its own operation screen to the wirelessly connected terminal device.

[0003] Incidentally, when a terminal device starts using an information processing device for the first time or when a wireless connection is disconnected, the terminal device needs to be configured to wirelessly connect to the information processing device. For example, when using Wi-Fi communication, the terminal device needs to set the SSID (Service Set Identifier), password, bandwidth, channel, etc. of the information processing device.

[0004] However, since the information processing device does not have a display device, it is not easy to check the settings required to establish communication with the information processing device, which can make the setting operations cumbersome. Also, if there are multiple information processing devices, multiple SSIDs are displayed on the terminal device, making it difficult to determine which one to connect to. Furthermore, there is a problem that downtime occurs during which the information processing device cannot be used while the wireless connection is disconnected, resulting in reduced availability.

[0005] Conventionally, a technique has been proposed for transmitting settings related to a wireless connection between an information processing device and a terminal device via a wired connection, but there is room for further improvement because downtime occurs when a wireless connection cannot be established. Summary of the Invention [Problem to be solved by the invention]

[0006] The problem to be solved by the present invention is to provide a terminal device, a program, and an information processing system that are capable of efficiently performing interconnections that assume the use of an information processing device. [Means for solving the problem]

[0007] The terminal device of the embodiment includes a wired communication unit capable of connecting to an external information processing device via a wired connection, a wireless communication unit capable of connecting wirelessly to the information processing device, an acquisition unit that acquires setting information for wirelessly connecting to the information processing device from the information processing device that is connected via a wired connection via the wired communication unit, a communication control unit that establishes a wireless connection with the information processing device via the wireless communication unit based on the setting information acquired by the acquisition unit, and a display control unit that, when a wireless connection is established, displays on a display unit an operation screen that is provided from the information processing device via the wireless communication unit and that allows the user to use functions possessed by the information processing device, and when a wireless connection with the information processing device cannot be established, the communication control unit acquires the operation screen from the information processing device via the wired communication unit, and the display control unit displays the operation screen acquired via the wired communication unit on the display unit. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram illustrating an example of the configuration of an information processing system according to an embodiment. [Figure 2] FIG. 2 is a diagram illustrating an example of a hardware configuration of the information processing device according to the embodiment. [Figure 3] FIG. 3 is a diagram illustrating an example of the hardware configuration of the display terminal 20 according to the embodiment. [Figure 4] FIG. 4 is a diagram illustrating an example of the functional configuration of the information processing device and the display terminal according to the embodiment. [Figure 5] FIG. 5 is a sequence diagram showing an example of processing performed by the information processing device 10 and the display terminal 20 of the embodiment. [Figure 6]FIG. 6 is a flowchart illustrating an example of processing performed by the display terminal of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a terminal device and a program according to an embodiment will be described with reference to the drawings.

[0010] Fig. 1 is a diagram showing an example of the configuration of an information processing system 1 according to an embodiment. As shown in Fig. 1, the information processing system 1 includes an information processing device 10 and a display terminal 20. Note that in Fig. 1, the relationship between the number of information processing devices 10 and the number of display terminals 20 is one to one, but this is not limiting and may be one to many.

[0011] The information processing device 10 includes a connection interface for wired connection such as a USB (Universal Serial Bus). The information processing device 10 also has a mobile hotspot function, and can operate as a wireless LAN access point.

[0012] Furthermore, the information processing device 10 of this embodiment does not include a display device such as a liquid crystal display, and is configured so that no display device is connected. In other words, the information processing device 10 may be configured so as not to include an interface for connecting to a display device. The information processing device 10 is realized, for example, by a server device such as an edge server, a PC (Personal Computer), an I / O box (also called a device broker), or the like. The information processing device 10 can also be referred to as a host device.

[0013] The display terminal 20 is an example of a terminal device, and is a terminal device used by a user who uses the information processing device 10. The display terminal 20 can be connected to the information processing device 10 by wire or wirelessly. For example, the display terminal 20 may be a portable terminal device such as a tablet terminal, a smartphone, or a notebook PC (Personal Computer).

[0014] In the information processing system 1 having the above configuration, the information processing device 10 provides the display terminal 20, which has established a wireless connection with the information processing device 10, with functions of the information processing device 10 and devices connected to the information processing device 10 so that the functions of the information processing device 10 and devices connected to the information processing device 10 can be used.

[0015] Specifically, the information processing device 10 of this embodiment has a function as a product sales data processing device that processes product sales data (hereinafter also referred to as a POS function). The information processing device 10 provides an operation screen on which sales data processing can be performed to the display terminal 20 with which a wireless connection has been established.

[0016] For example, as an example of sales data processing, the information processing device 10 executes a registration process in which it uses a scanner connected to the device to read identification information of a product from a code symbol such as a barcode attached to the product and registers the read identification information as a purchase target. Also, as an example of sales data processing, the information processing device 10 executes a checkout process in which it settles the total price of the products corresponding to the registered identification information with the payment amount paid by the customer and outputs a receipt for the transaction using a printer connected to the device. The information processing device 10 provides an operation screen on which the registration process and / or checkout process can be executed, in other words, an operation screen on which the POS function can be used, to the display terminal 20 with which a wireless connection has been established.

[0017] 2 is a diagram illustrating an example of a hardware configuration of the information processing device 10 according to the embodiment. As illustrated in FIG. 2, the information processing device 10 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, and a RAM (Random Access Memory) 13.

[0018] The CPU 11 is an example of a processor, and controls the overall operation of the information processing device 10. The ROM 12 stores various programs. The RAM 13 is used as a working memory for expanding various data.

[0019] The CPU 11, ROM 12, and RAM 13 are connected via a bus or the like to form a control unit 100. The control unit 100 executes various processes as the CPU 11 operates in accordance with programs stored in the ROM 12 and a storage unit 14 (described later).

[0020] The control unit 100 is connected to a storage unit 14 via a bus or the like. The storage unit 14 is configured with a non-volatile memory such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive) that retains stored information even when the power is turned off. For example, the storage unit 14 stores an OS (Operating System), various programs, device drivers, etc.

[0021] The storage unit 14 also stores setting information 141. For example, the setting information 141 holds settings related to a mobile hotspot function using the wireless communication unit 16, which will be described later. Specifically, the setting information 141 holds settings such as an SSID (Service Set Identifier), password, band, and channel of an access point provided by the information processing device 10.

[0022] The control unit 100 is also connected to a wired communication unit 15 and a wireless communication unit 16 via a bus or the like. The wired communication unit 15 has a connector for wired connection that complies with a general-purpose standard such as USB, and is capable of detachably connecting to an external device via the connector. The wired communication unit 15 performs data communication with the external device connected via a wire.

[0023] Here, there is no particular limitation on the number of wired communication units 15 and the type of connectors included in the control unit 100. The information processing device 10 of this embodiment is provided with a plurality of wired communication units 15 to connect the display terminal 20 and other devices (scanners, printers, etc.).

[0024] The wireless communication unit 16 is a communication interface for wirelessly connecting to an external device such as the display terminal 20. The wireless communication unit 16 is, for example, a communication interface that complies with the wireless LAN standard, and performs wireless connection (wireless communication) with the external device.

[0025] It should be noted that the hardware configuration of the information processing device 10 is not limited to the example in Fig. 2. For example, the information processing device 10 may be provided with a communication interface that complies with the wired LAN standard in order to connect to the Internet or an in-store network.

[0026] 3 is a diagram showing an example of a hardware configuration of the display terminal 20 according to the embodiment. As shown in FIG.

[0027] The CPU 21 is an example of a processor, and controls the overall operation of the display terminal 20. The ROM 22 stores various programs. The RAM 23 is used as a working memory for expanding various data.

[0028] The CPU 21, ROM 22, and RAM 23 are connected via a bus or the like to form a control unit 200. The control unit 200 executes various processes as the CPU 21 operates in accordance with programs stored in the ROM 22 and a storage unit 24 (described later).

[0029] The control unit 200 is connected to a storage unit 24 via a bus or the like. The storage unit 24 is configured with a non-volatile memory such as an HDD or SSD that retains stored information even when the power is turned off. For example, the storage unit 24 stores an OS, various programs, etc. The storage unit 24 also stores setting information 241.

[0030] Furthermore, a wired communication unit 25 and a wireless communication unit 26 are connected to the control unit 200 via a bus or the like. The wired communication unit 25 has a connector conforming to a general-purpose standard such as USB, and is connected to an external device such as the information processing device 10 via the connector via a wire such as a cable.

[0031] The wireless communication unit 26 is a wireless communication interface for wirelessly connecting with an external device such as the display terminal 20. The wireless communication unit 26 is, for example, a communication interface that complies with the wireless LAN standard, and performs wireless connection (wireless communication) with the external device.

[0032] Furthermore, a display unit 27 and an operation unit 28 are connected to the control unit 200 via a bus or the like. The display unit 27 is a display device such as an LCD (Liquid Crystal Display). The display unit 27 displays various information under the control of the control unit 200. The operation unit 28 has various operation buttons for accepting user operations, and outputs operation information according to the user operations to the control unit 200. Note that the operation unit 28 may be a touch panel provided on the surface of the display unit 27.

[0033] Meanwhile, when starting to use the information processing device 10 for the first time or when the wireless connection is disconnected, the display terminal 20 needs to perform processing (settings) for wirelessly connecting to the information processing device 10. Specifically, the display terminal 20 needs to set the SSID, password, band, channel, etc. of the information processing device 10.

[0034] However, as described above, the information processing device 10 does not have a display device, and therefore it is not easy to check the settings required for wireless connection with the information processing device 10, which can make the setting operations cumbersome. Also, if there are multiple information processing devices 10, multiple SSIDs are displayed on the display terminal 20, making it difficult to determine which one to connect to. Furthermore, there is a problem that availability is reduced because downtime occurs during which the information processing device cannot be used while the wireless connection is disconnected.

[0035] Therefore, the information processing system 1 of this embodiment is provided with a function for efficiently performing settings related to wireless connection with the information processing device 10. The functional configurations of the information processing device 10 and the display terminal 20 will be described below.

[0036] Fig. 4 is a diagram showing an example of the functional configuration of the information processing device 10 and the display terminal 20 according to the embodiment. Note that Fig. 4 also shows wired communication units 15 and 25 and wireless communication units 16 and 26 provided in the information processing device 10 and the display terminal 20.

[0037] As shown in FIG. 4, the information processing device 10 includes a setting information providing unit 101, a communication control unit 102, and an operation screen providing unit 103 as functional components.

[0038] Specifically, the control unit 100 (CPU 11) of the information processing device 10 realizes the above-mentioned functional configuration by executing a program stored in the ROM 12 or the storage unit 14. Note that in this embodiment, the above-mentioned functional configuration is a software configuration realized by cooperation between the processor of the information processing device 10 and the program, but is not limited to this, and a hardware configuration in which part or all of the functional configuration is realized by a dedicated circuit or the like may also be used.

[0039] The setting information providing unit 101 provides the display terminal 20 connected to the wired communication unit 15 with settings for wirelessly connecting to the device itself. Specifically, when the display terminal 20 is connected to the wired communication unit 15, the setting information providing unit 101 provides the display terminal 20 with setting information 141 including settings related to the mobile spot function.

[0040] Here, providing the setting information 141 is not limited to the setting information providing unit 101 transmitting the setting information 141 to the display terminal 20, but also includes the concept of providing the setting information 141 stored in the storage unit 14 so that it can be read by the display terminal 20. In the latter case, for example, the setting information providing unit 101 may notify the display terminal 20 of information indicating the storage location of the setting information 141.

[0041] The communication control unit 102 controls the wired communication unit 15 and the wireless communication unit 16 to communicate with external devices. For example, the communication control unit 102 establishes a wireless connection with the display terminal 20 via the wireless communication unit 16. Specifically, the communication control unit 102 forms a wireless access point based on the SSID, band, channel, etc. set in the setting information 141. For example, the communication control unit 102 replies with a response signal in response to a Ping command sent to its own device.

[0042] Furthermore, when the communication control unit 102 receives access to the wireless access point from the display terminal 20, it compares the password transmitted from the display terminal 20 with the password set in the setting information 141, and if the passwords match, it establishes a wireless connection with the display terminal 20. Then, the communication control unit 102 transmits and receives various data to and from the display terminal 20 with which the wireless connection has been established.

[0043] The operation screen providing unit 103 cooperates with the communication control unit 102 to provide (transmit) an operation screen for operating the display terminal 20 with which a wireless connection has been established. For example, the operation screen providing unit 103 provides the display terminal 20 with an operation screen for assisting in the use of the POS function of the display terminal 20. It is assumed that such an operation screen makes it possible to process product sales data using a device connected to the information processing device 10. Note that there is no particular restriction on the method for providing the operation screen, and publicly known technologies such as Miracast (registered trademark) and remote desktop can be used.

[0044] On the other hand, the display terminal 20 includes a setting information acquisition unit 201, a communication control unit 202, a display control unit 203, and the like as functional components.

[0045] Specifically, the control unit 200 (CPU 21) of the display terminal 20 realizes the above-mentioned functional configuration by executing a program stored in the ROM 22 or the storage unit 24. In this embodiment, the above-mentioned functional configuration is a software configuration realized by cooperation between the processor of the display terminal 20 and the program, but is not limited to this, and a hardware configuration in which part or all of the functional configuration is realized by a dedicated circuit or the like may also be used.

[0046] The setting information acquisition unit 201 is an example of an acquisition unit. When the information processing device 10 is connected in a wired manner via the wired communication unit 25, the setting information acquisition unit 201 acquires settings for wirelessly connecting to the information processing device 10 from the information processing device 10. Specifically, the setting information acquisition unit 201 acquires the setting information 141 provided by the setting information provision unit 101 of the information processing device 10.

[0047] When the setting information acquisition unit 201 acquires the setting information 141 from the information processing device 10, the setting information acquisition unit 201 stores the setting information 141 in the storage unit 24 as setting information 241. Furthermore, if the setting information 241 already exists in the storage unit 24, the setting information acquisition unit 201 updates the setting information 241 with the newly acquired setting information 141.

[0048] The communication control unit 202 is an example of a communication control unit. The communication control unit 202 controls the wired communication unit 25 and the wireless communication unit 26 to communicate with an external device. For example, the communication control unit 202 performs processing to establish a wireless connection with the information processing device 10 based on the setting information 141 acquired by the setting information acquisition unit 201. Specifically, the communication control unit 202 sets (reflects) the SSID, band, channel, etc. in the wireless communication unit 26 based on the setting contents of the setting information 241 stored in the storage unit 24.

[0049] Furthermore, the communication control unit 202 accesses the information processing device 10 (access point) via the wireless communication unit 26. Specifically, the communication control unit 202 attempts to establish a wireless connection with the information processing device 10 by transmitting a password or the like set in the setting information 241 to the information processing device 10. When the wireless connection with the information processing device 10 is established, the communication control unit 202 transmits and receives various data to and from the information processing device 10.

[0050] The communication control unit 202 may check communication with the information processing device 10 by sending a Ping command to the information processing device 10 prior to accessing the information processing device 10. The communication control unit 202 may also be configured to perform processes from reflecting the setting information 241 to accessing the information processing device 10, triggered by the setting information 241 being newly stored or updated.

[0051] The display control unit 203 is an example of a display control unit. The display control unit 203 controls the display unit 27 to display various screens and information on the display unit 27. For example, the display control unit 203 cooperates with the communication control unit 202 to display an operation screen provided by the information processing device 10 on the display unit 27. A user operating the display terminal 20 can use functions (for example, POS functions) of the information processing device 10 and devices connected to the information processing device 10 by operating the operation screen displayed on the display unit 27.

[0052] As described above, in the information processing system 1, by connecting the display terminal 20 to the information processing device 10 by wire, it is possible to reflect the settings required for a wireless connection with the information processing device 10 in the display terminal 20. As a result, when the display terminal 20 newly establishes a wireless connection with the information processing device 10, for example, it is possible to prepare and efficiently perform settings related to the wireless connection.

[0053] If the display terminal 20 does not receive a response to the Ping command transmitted via the wireless communication unit 26, it cannot establish a wireless connection with the information processing device 10. Even if a response to the Ping command is received, if password authentication or the like fails, it cannot establish a wireless connection with the information processing device 10.

[0054] Therefore, in the display terminal 20 of this embodiment, if a response to the Ping command is not received from the information processing device 10 or if a wireless connection with the information processing device 10 cannot be established, an operation screen is obtained from the information processing device 10 via the wired communication unit 25, and control is performed to display the operation screen on the display unit 27.

[0055] For example, if the communication control unit 202 of the display terminal 20 does not receive a response to a Ping command from the information processing device 10 or if it is unable to establish a wireless connection with the information processing device 10, it sends a command (hereinafter also referred to as an operation screen request) to the information processing device 10 via the wired communication unit 25.

[0056] In this case, when the operation screen providing unit 103 of the information processing device 10 receives an operation screen request via the wired communication unit 15, it cooperates with the communication control unit 102 to provide the operation screen of the device to the wired-connected display terminal 20.

[0057] Next, the communication control unit 202 of the display terminal 20 acquires the operation screen provided from the information processing device 10 via the wired communication unit 25. Then, the display control unit 203 of the display terminal 20 displays the operation screen acquired via the wired communication unit 25 on the display unit 27.

[0058] As a result, even if the wireless connection with the information processing device 10 fails, the display terminal 20 can acquire and display the operation screen provided by the information processing device 10 via the wired communication unit 25, thereby reducing downtime.

[0059] An example of the operation of the information processing device 10 and the display terminal 20 described above will be described below with reference to FIGS.

[0060] First, an example of processing performed between the information processing device 10 and the display terminal 20 will be described with reference to Fig. 5. Fig. 5 is a sequence diagram showing an example of processing performed by the information processing device 10 and the display terminal 20 according to the embodiment.

[0061] First, when the information processing device 10 and the display terminal 20 are connected by wire (step S11), the setting information acquisition unit 201 of the display terminal 20 receives the setting information from the setting information providing unit 101 of the information processing device 10. The setting information acquisition unit 201 acquires the setting information 141 to be provided (steps S12 and S13). Next, the setting information acquisition unit 201 stores the acquired setting information 141 as setting information 241 in the storage unit 24 (step S14).

[0062] Next, the communication control unit 202 of the display terminal 20 reflects the setting contents of the setting information 241 by making settings related to the wireless connection of the wireless communication unit 26 based on the setting information 241 (step S15). Next, the communication control unit 202 of the display terminal 20 accesses the information processing device 10 via the wireless communication unit 26 to make a wireless connection to the information processing device 10 (step S16).

[0063] When a wireless connection is established between the information processing device 10 and the display terminal 20, the operation screen providing unit 103 provides the operation screen of the information processing device 10 to the display terminal 20 (step S17). The display control unit 203 of the display terminal 20 displays the operation screen provided by the information processing device 10 on the display unit 27 (step S18), thereby realizing a state in which the information processing device 10 can be operated.

[0064] Next, an example of processing performed by the display terminal 20 will be described with reference to Fig. 6. Fig. 6 is a flowchart showing an example of processing performed by the display terminal 20 according to the embodiment. The flowchart shown in Fig. 6 shows details of processing performed by the display terminal 20 when connected to the information processing device 10 shown in Fig. 5.

[0065] First, the setting information acquisition unit 201 monitors the state of the wired communication unit 25 and waits until a wired connection with the information processing device 10 is established (step S21; No). When the setting information acquisition unit 201 detects that a wired connection has been established (step S21; Yes), it acquires setting information 141 from the connected information processing device 10 (step S22). Next, the setting information acquisition unit 201 stores the acquired setting information 141 as setting information 241 in the storage unit 24 (step S23).

[0066] Next, the communication control unit 202 sets up the wireless communication unit 26 based on the setting information 241 stored in the storage unit 24, thereby realizing a state in which wireless connection with the information processing device 10 is possible (step S24). Next, the communication control unit 202 checks communication with the information processing device 10 by transmitting a Ping command to the information processing device 10 via the wireless communication unit 26 (step S25).

[0067] If there is a response to the Ping command (step S26; Yes), the communication control unit 202 accesses the information processing device 10 via the wireless communication unit 26 (step S27) and attempts to establish a wireless connection. If the wireless connection can be established (step S28; Yes), the display control unit 203 displays an operation screen provided by the information processing device 10 on the display unit 27 (step S29), and ends the process.

[0068] On the other hand, if there is no response to the Ping command in step S26 (step S26; No), or if a wireless connection cannot be established in step S28 (step S28; No), the process proceeds to step S30.

[0069] In the following step S30, the communication control unit 202 transmits an operation screen request to the information processing device 10 via the wired communication unit 25, thereby acquiring (receiving) an operation screen provided from the information processing device 10 (step S30). Then, the display control unit 203 causes the display unit 27 to transmit the operation screen acquired via the wired communication unit 25 (step S31), and ends this process.

[0070] The display control unit 203 may display, on the operation screen displayed in step S31, a wireless connection error indicating that a wireless connection with the information processing device 10 cannot be established, a message indicating that an operation screen provided via a wired connection is being displayed, etc. Furthermore, prior to the processing of step S30, if the display control unit 203 detects that the information processing device 10 is not connected to the wired communication unit 25 via a wired connection, the display control unit 203 may display, on the display unit 27, a screen prompting the user to establish a wired connection with the information processing device 10.

[0071] As described above, the display terminal 20 according to the present embodiment acquires setting information for wirelessly connecting to the information processing device 10 from the information processing device 10 to which it is wired connected via the wired communication unit 25, and establishes a wireless connection with the information processing device 10 via the wireless communication unit 26 based on the acquired setting information. Once the wireless connection is established, the display terminal 20 displays an operation screen provided from the information processing device 10 via the wireless communication unit 26 on the display unit 27. Furthermore, when the display terminal 20 is unable to establish a wireless connection with the information processing device 10, it acquires an operation screen from the information processing device 10 via the wired communication unit 25 and displays the acquired operation screen on the display unit 27.

[0072] As a result, when the display terminal 20 is connected to the information processing device 10 via a wired connection, the display terminal 20 can reflect the settings required for a wireless connection in the display terminal 20 itself, thereby enabling the settings related to the wireless connection to be prepared and performed efficiently. Therefore, the display terminal 20 can easily perform processing using the information processing device 10. Furthermore, even if a wireless connection with the information processing device 10 cannot be established for various reasons, the display terminal 20 can continue processing using the information processing device 10 via the wired communication unit 25, thereby improving availability. Therefore, the display terminal 20 can efficiently perform interconnection assuming the use of the information processing device 10.

[0073] The above-described embodiment can be modified as needed by partially changing the configuration or functions of each of the above-described devices. Therefore, several modifications of the above-described embodiment will be described below as other embodiments. The following mainly focuses on differences from the above-described embodiment, and detailed descriptions of commonalities with the content already described will be omitted. The modifications described below may be implemented individually or in appropriate combination.

[0074] (Variation 1) In the above-described embodiment, the display terminal 20 transmits a Ping command to the information processing device 10, but this is not limiting, and the display terminal 20 may not transmit a Ping command. In this case, the display terminal 20 may immediately access the information processing device 10 after reflecting the settings in the wireless communication unit 26.

[0075] (Variation 2) In the above-described embodiment, the information processing device 10 has a POS function, but the functions of the information processing device 10 are not limited to this and the information processing device 10 may have other functions. For example, the information processing device 10 may have functions related to image processing, generation AI, etc.

[0076] The programs executed by each device in the above-described embodiments are provided in a state where they are pre-installed in a ROM, a storage unit, etc. The programs executed by each device in the above-described embodiments may be provided by being recorded in an installable or executable format on a computer-readable recording medium such as a CD-ROM, a flexible disk (FD), a CD-R, or a digital versatile disk (DVD).

[0077] Furthermore, the programs executed by each device in the above-described embodiments may be stored on a computer connected to a network such as the Internet and provided by being downloaded via the network. Also, the programs executed by each device in the above-described embodiments may be provided or distributed via a network such as the Internet.

[0078] Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments and their modifications can be embodied in various other forms, and various omissions, substitutions, changes, and combinations can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the inventions and their equivalents as defined in the claims. [Explanation of symbols]

[0079] 1. Information Processing Systems 10. Information processing equipment 15 Wired Communications Department 16. Radio Communication Department 20 Display terminal 25 Wired Communications Department 26 Radio Communication Department 101 Setting information provision section 102 Communication control unit 103 Operation screen providing section 201 Setting information acquisition unit 202 Communication control section 203 Display control unit [Prior art documents] [Patent documents]

[0080] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-124903

Claims

1. a wired communication unit capable of connecting to an external information processing device via a wired connection; a wireless communication unit capable of wirelessly connecting to the information processing device; an acquisition unit that acquires setting information for wirelessly connecting to the information processing device from the information processing device that is wired connected via the wired communication unit; a communication control unit that establishes a wireless connection with the information processing device via the wireless communication unit based on the setting information acquired by the acquisition unit; a display control unit that displays, when a wireless connection is established, an operation screen provided from the information processing device via the wireless communication unit, on a display unit, allowing the user to use functions of the information processing device; Equipped with the communication control unit, when a wireless connection with the information processing device cannot be established, acquires the operation screen from the information processing device via the wired communication unit; The display control unit displays the operation screen acquired via the wired communication unit on the display unit of the terminal device.

2. the display control unit displays a wireless connection error on the display unit when the communication control unit cannot establish a wireless connection with the information processing device. The terminal device according to claim 1 .

3. the display control unit displays, on the display unit, information prompting the user to connect the information processing device via a wired connection when the communication control unit cannot establish a wireless connection with the information processing device and the information processing device is not connected via a wired connection to the wired communication unit. The terminal device according to claim 1 or 2.

4. the information processing device has a function capable of executing product sales data processing, the display control unit displays, on the display unit, an operation screen that enables use of a function related to the sales data processing that the information processing device has. The terminal device according to claim 1 .

5. A terminal computer including a wired communication unit capable of wired connection with an external information processing device and a wireless communication unit capable of wireless connection with the information processing device, an acquisition unit that acquires setting information for wirelessly connecting to the information processing device from the information processing device that is wired connected via the wired communication unit; a communication control unit that establishes a wireless connection with the information processing device via the wireless communication unit based on the setting information acquired by the acquisition unit; a display control unit that displays, when a wireless connection is established, an operation screen provided from the information processing device via the wireless communication unit, on a display unit, allowing the user to use functions of the information processing device; and make it work, the communication control unit, when a wireless connection with the information processing device cannot be established, acquires the operation screen from the information processing device via the wired communication unit; The display control unit is a program that displays the operation screen acquired via the wired communication unit on the display unit.

6. An information processing system having an information processing device and a terminal device, The terminal device a wired communication unit capable of being connected to the information processing device by wire; a wireless communication unit capable of wirelessly connecting to the information processing device; an acquisition unit that acquires setting information for wirelessly connecting to the information processing device from the information processing device that is wired connected via the wired communication unit; a communication control unit that establishes a wireless connection with the information processing device via the wireless communication unit based on the setting information acquired by the acquisition unit; a display control unit that displays, on a display unit, an operation screen provided from the information processing device via the wireless communication unit, which allows the user to use functions of the information processing device; Equipped with the communication control unit, when a wireless connection with the information processing device cannot be established, acquires the operation screen from the information processing device via the wired communication unit; The display control unit displays the operation screen acquired via the wired communication unit on the display unit.

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