JP2014017548A - Radio communication system, radio terminal, and image input device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set connection information to connect with an access point to one wireless terminal from another wireless terminal without requiring a wired interface.SOLUTION: A capture device 100 does not allow a user to manually input an SSID and encryption key to connect with an access point 150 because it does not comprise an input device to input a character. Therefore, a tablet terminal 130 obtains the SSID and encryption key to connect with the access point 150 in advance, and transmits them to the capture device 100. This allows the capture device 100 to connect with the access point 150 and to transfer image data such as moving images and still pictures to the tablet terminal 130 via the access point 150 and to get the tablet terminal 130 to display them.

Description

  The present invention relates to a technique for passing connection information for wireless communication between wireless terminals via an access point.

  In a wireless LAN, there are an infrastructure mode in which a plurality of wireless terminals communicate via an access point, and an ad hoc mode in which a plurality of wireless terminals communicate without going through an access point. In the infrastructure mode, each of a plurality of wireless terminals needs to set connection information (SSID, encryption key information, etc.) set in the access point.

  Conventionally, a method called Wi-Fi Protected Setup (WPS) for connecting and setting connection information set in an access point from the access point to a wireless terminal has been proposed (Non-Patent Document 1).

Wi-Fi Protected Setup (TM), http://www.wi-fi.org/knowledge-center/articles/wi-fi-protected-setup

  Generally, since a tablet terminal has a wireless LAN communication function, it would be convenient if an image could be received from a peripheral device such as an image camera by wireless LAN communication. However, in order to set access point connection information in a peripheral device according to WPS, it is necessary to operate the access point. That is, the user has to operate the WPS start switch provided in the access point. This operation may be troublesome because users who are expected to use peripheral devices are not necessarily familiar with WPS.

  On the other hand, it is also conceivable to provide a wired interface such as USB (Universal Serial Bus) in the capture device and transmit access point connection information from the tablet terminal via the wired interface. However, mounting both a wireless interface and a wired interface on a peripheral device may be disadvantageous in terms of manufacturing cost, installation space, power consumption, and the like.

  It is also conceivable that a peripheral device is provided with a keyboard and a display device, and the user inputs connection information directly to the peripheral device. However, in this case, the peripheral device becomes a large-scale device and the convenience for the user will be reduced. In other words, it becomes difficult to realize a peripheral device that can be held with one hand. Here, peripheral devices and tablet terminals are taken as an example, but similar problems exist in wireless terminals for other purposes.

  Accordingly, an object of the present invention is to set connection information for connecting to an access point from one wireless terminal to the other wireless terminal without requiring a wired interface.

According to the present invention, a wireless communication system comprising:
An information processing device including an information display unit and an information input unit; and an image input device for inputting an image;
In establishing wireless communication between the information processing apparatus and the image input apparatus via an access point,
The information processing apparatus receives connection information for establishing wireless communication with the image input apparatus via the access point from the information input unit, and then transmits the connection information to the image input apparatus without passing through the access point. While sending connection information directly,
The image input device establishes wireless communication with the information processing device via the connected access point by connecting to the access point using the connection information received from the information processing device. A featured wireless communication system is provided.

  According to the present invention, connection information for connecting to an access point can be set from one wireless terminal to the other wireless terminal without requiring a wired interface.

It is a figure which shows an example of the radio | wireless communications system which has an image input device, an image display apparatus, and an access point. It is the figure which showed the sequence of the process which sets the connection information of an access point from a tablet terminal to a capture apparatus. It is the figure which showed the sequence of the process which a capture apparatus connects with an access point using the connection information of the access point received from the tablet terminal. It is a block diagram of a capture device. It is a block diagram of a tablet terminal. 6 is a flowchart illustrating processing executed by the capture device 100. 6 is a flowchart illustrating processing executed by the capture device 100. FIG. 6 is a diagram showing an example of a dialog 800.

  The present invention is characterized in that connection information for connecting to an access point can be set from one wireless terminal to the other wireless terminal without requiring a wired interface. Specifically, when establishing wireless communication between an information processing device and an image input device via an access point, the information processing device establishes wireless communication with the image input device via the access point. Connection information is received from an information input unit such as a hardware key or software key. Thereafter, the information processing apparatus directly connects wirelessly to the image input apparatus without passing through the access point, and directly transmits connection information. On the other hand, the image input apparatus establishes wireless communication with the information processing apparatus via the connected access point by connecting to the access point using the connection information received from the information processing apparatus. As a result, the information processing apparatus can set the image input apparatus that cannot manually input the connection information. The information processing apparatus may include an information display unit and display an image received by the image input apparatus via the access point.

  FIG. 1 shows a wireless communication system having an image input device, an image display device, and an access point according to an embodiment. A capture device 100, which is an example of an image input device that inputs an image, reads an image of a human skin or acquires an enlarged image of a living thing, a plant, a machine, or the like. The tablet terminal 130, which is an example of an image display device or an information processing device that displays an image input by the image input device, receives and displays image data transmitted by the capture device 100. The tablet terminal 130 and the capture device 100 may be referred to as a wireless terminal, a wireless LAN terminal, or simply a terminal.

  When the access point 150 does not exist, the capture device 100 and the tablet terminal 130 perform wireless communication in the ad hoc mode. The tablet terminal 130 has connection information for connecting to the access point 150 in the infrastructure mode. Examples of connection information include information such as SSID, ESSID, encryption method, and encryption key. The tablet terminal 130 may acquire the connection information from the access point 150 by WPS, or the connection information may be input by the user from the touch panel of the tablet terminal 130. Since the capture device 100 does not include a character information input device such as a keyboard, the user cannot directly input connection information to the capture device 100. Therefore, in this embodiment, the capture device 100 connects to the tablet terminal 130 in the ad hoc mode and requests connection information. The tablet terminal 130 transmits the connection information of the access point 150 to the capture device 100 according to the request received from the capture device 100. The capture device 100 uses the connection information received from the tablet terminal 130 to connect to the access point 150 in the infrastructure mode.

<Overview of connection information setting process>
FIG. 2 is a diagram showing a sequence of processing for setting connection information of the access point 150 from the tablet terminal 130 to the capture device 100. It is assumed that the capture device 100 does not have a user interface that accepts access point connection information.

  In S101, since the capture device 100 does not hold connection information of the access point 150, the capture device 100 connects to the tablet terminal 130 in the ad hoc mode and requests connection information from the tablet terminal 130. The tablet terminal 130 is connected to the capture device 100 in the ad hoc mode, and receives a connection information request signal.

  In S102, when the connection information is requested from the capture device 100, the tablet terminal 130 displays a dialog for inputting the connection information on the display unit, and accepts the input of the connection information. If the connection information of the access point 150 is already stored, the input of connection information may be omitted.

  In step S <b> 103, the tablet terminal 130 transmits the accepted connection information to the capture device 100. The capture device 100 receives connection information.

  In S104, the capture device 100 stores the received connection information. At this time, the capture device 100 may execute a restart in order to use the received connection information.

  FIG. 3 is a diagram illustrating a processing sequence in which the capture device 100 connects to the access point 150 using the connection information of the access point 150 received from the tablet terminal 130.

  In S <b> 105, it is assumed that the tablet terminal 130 is connected to the access point 150 using the connection information of the access point 150. Here, infrastructure mode is used.

  In S106, the capture device 100 reads connection information of the access point 150 from the storage unit.

  In S107, the capture device 100 tries to connect to the access point 150 in the infrastructure mode using the read connection information. Note that when the connection attempt with the access point 150 fails, the capture device 100 further determines whether connection information of another access point is stored in the storage unit. If connection information of another access point is stored in the storage unit, the capture device 100 tries to connect by reading the connection information. If the connection information of another access point is not stored in the storage unit, the capture device 100 executes the processing from S101 again. In this way, the capture device 100 participates in the same network (same segment) as the tablet terminal 130.

  In S108, the capture device 100 starts communication with the tablet terminal 130 via the access point 150, and transfers image data. The image data is a moving image or a still image.

<Details of connection information setting process>
FIG. 4 is a block diagram of the capture device 100. The CPU 1 is a control unit that comprehensively controls each unit of the capture device 100. For example, the CPU 1 functions as a first control unit that controls the wireless communication unit 6 that is the first wireless LAN communication unit. The RAM 2 is a storage unit that functions as a work area. The ROM 3 is a rewritable nonvolatile memory and stores various programs and data. For example, the ROM 3 functions as a first storage unit that stores connection information for the wireless communication unit 6 to connect to a partner through wireless LAN communication. Note that the rewritable nonvolatile memory includes a flash, an EEPROM, a battery backup type RAM, and the like. The image reading unit 5 includes an optical system for reading an image, an image sensor, an image processing unit for executing image processing for creating image data, and the like. As described above, the image reading unit 5 functions as an image input unit that inputs an image. The wireless communication unit 6 performs wireless communication according to a wireless LAN protocol such as IEEE802.11a, b, g, or n. The control program 7 is a program for controlling image capture processing, wireless communication processing, and the like. The default connection information 8 is connection information for connecting to the tablet terminal 130 in the ad hoc mode in order to receive the connection information of the access point 150. The connection information of the tablet terminal 130 includes information such as an SSID and an encryption key necessary for ad hoc communication. The SSID may be a specific SSID known to the tablet terminal 130 in order to indicate that the capture device 100 requests connection information of the access point 150. The AP connection information 9 is connection information of the access point 150 received from the tablet terminal 130. AP is an abbreviation for access point. When the connection information of the access point 150 has not been received yet, the connection information of the access point 150 is not stored in the ROM 3.

  FIG. 5 is a block diagram of the tablet terminal 130. The CPU 11 is a control unit that comprehensively controls each unit of the tablet terminal 130. For example, the CPU 11 functions as a second control unit that controls the wireless communication unit 16 that is the second wireless LAN communication unit. The RAM 12 is a storage unit that functions as a work area. The ROM 13 is a rewritable nonvolatile memory and stores various programs and data. The ROM 13 functions as a second storage unit that stores connection information for the wireless communication unit 16 to connect to a partner through wireless LAN communication. The operation unit 14 is a character information input device such as a keyboard or a touch panel. The operation unit 14 and the CPU 11 function as a reception unit that receives input of connection information for connecting to an access point. The display unit 15 is a liquid crystal color or self-luminous display device, and displays an image received from the capture device 100 or displays information input from the operation unit 14. Thus, the display unit 15 functions as an image display unit that displays an image. The wireless communication unit 16 performs wireless communication according to a wireless LAN protocol such as IEEE802.11a, b, g, or n. The control program 17 is a program for controlling image display processing, connection information setting processing, and the like. The default connection information 18 is connection information for connecting to the capture device 100 in the ad hoc mode in order to transmit the connection information of the access point 150 to the capture device 100. The connection information for connecting to the capture device 100 includes information such as SSID and encryption key necessary for ad hoc communication. The default connection information 18 held in the tablet terminal 130 is basically the same as the default connection information 8 held in the capture device 100. The AP connection information 19 is connection information of the access point 150 received from the access point 150 or input from the operation unit 14. When the connection information of the access point 150 has not been acquired yet, the connection information of the access point 150 is not stored in the ROM 13. Note that the CPU 11 may download the control program 17 and the default connection information 18 from an application server (such as Google (registered trademark) Play or App store (registered trademark)) on the Internet and write it in the ROM 13.

  FIG. 6 is a flowchart illustrating processing executed by the capture device 100.

  In S <b> 201, the CPU 1 tries to read the AP connection information 9 from the ROM 3.

  In step S202, the CPU 1 determines whether the AP connection information 9 has been successfully read. If the AP connection information 9 is stored in the ROM 3, the AP connection information 9 is normally successfully read. If the AP connection information 9 is successfully read, the process proceeds to S203. When the AP connection information 9 is not stored in the ROM 3, reading fails. In this case, the process proceeds to S205.

  In S203, the CPU 1 instructs the wireless communication unit 6 to scan for a beacon transmitted from the wireless station. The wireless communication unit 6 scans a beacon transmitted from the wireless station and returns the scanned result to the CPU 1.

  In S204, the CPU 1 determines whether there is a connectable AP based on the scan result. For example, the CPU 1 compares the connection information read from the ROM 3 with the connection information acquired from the beacon, and determines that there is a connectable access point (AP) if the two match. When a plurality of access points are found, the CPU 1 selects an access point that transmits a beacon having the highest reception level. If there is a connectable AP, the process proceeds to S208. If there is no connectable AP, the process proceeds to S205.

  In S205, the CPU 1 reads from the ROM 3 default connection information 8 for directly connecting to the tablet terminal 130 in the ad hoc mode. As described above, when the CPU 1 determines that the connection information for connecting to the access point is not stored in the first storage unit, the first wireless LAN communication unit performs the second wireless LAN communication unit of the image display device. Connection information for connection without going through the access point is read from the first storage unit.

  In S <b> 206, the CPU 1 instructs the wireless communication unit 6 to connect to the tablet terminal 130 according to the default connection information 8. The wireless communication unit 6 directly connects to the tablet terminal 130 in the ad hoc mode according to the default connection information 8. As described above, the second wireless LAN communication unit of the tablet terminal 130 is connected to the first wireless LAN communication unit of the capture device 100 without passing through the access point 150.

  In S207, the CPU 1 requests the AP connection information from the tablet terminal 130, receives the AP connection information from the tablet terminal 130, and stores the AP connection information received from the tablet terminal 130 in the ROM 3. As described above, the CPU 1 and the wireless communication unit 6 connect to the second wireless LAN communication unit of the image display device without using the access point using the read connection information, and to connect to the access point. Request information. When the CPU 11 of the tablet terminal 130 is requested for connection information for connecting to the access point 150, the CPU 11 of the tablet terminal 130 supplies the connection information for connecting to the access point 150 received by the receiving unit of the tablet terminal 130. The data is transmitted via the wireless communication unit 16. Further, when the CPU 1 of the capture device 100 receives connection information for connecting to the access point 150 via the wireless communication unit 6, the CPU 1 stores the connection information in the ROM 3 that is a storage unit. Thereafter, the CPU 1 returns to S201 in order to connect to the access point 150 using the AP connection information received from the tablet terminal 130. When S201 to S204 are executed and the access point 150 is found, the process proceeds to S208.

  In S208, the CPU 1 controls the wireless communication unit 6 to connect to the access point 150 using the AP connection information 9 in the infrastructure mode. Thus, the wireless communication unit 6 connects to the access point 150 using the connection information for connecting to the access point 150 read from the ROM 3.

  In S209, the CPU 1 controls the wireless communication unit 6, connects to the tablet terminal 130 via the access point 150, and starts communication.

  In S <b> 210, the CPU 1 controls the image reading unit 5 to capture an image to acquire image data, and transmits the image data to the tablet terminal 130.

  FIG. 7 is a flowchart illustrating processing executed by the capture device 100. When an instruction to start setting of AP connection information with respect to the capture device 100 is input from the operation unit 14, the CPU 11 executes processing according to this flowchart.

  In S <b> 301, the CPU 11 reads from the ROM 13 default connection information 18 for directly connecting to the capture device 100 in the ad hoc mode.

  In S <b> 302, the CPU 11 instructs the wireless communication unit 16 to connect to the capture device 100 according to the default connection information 18 read from the ROM 13. The wireless communication unit 16 directly connects to the capture device 100 in the ad hoc mode according to the default connection information 18.

  In step S <b> 303, the CPU 11 determines whether a signal requesting the AP connection information 19 has been received from the capture device 100. When the AP connection information 19 is requested from the capture device 100, the process proceeds to S304.

  In step S <b> 304, the CPU 11 determines whether the AP connection information 19 is already stored in the ROM 13. If the AP connection information 19 is stored, the process proceeds to S308, and if the AP connection information 19 is not stored, the process proceeds to S305.

  In step S <b> 305, the CPU 11 causes the display unit 15 to display a dialog for prompting the operator (user) to input the AP connection information 19.

  FIG. 8 shows an example of the dialog 800. The dialog 800 includes a text box 801 for inputting an SSID and a text box 802 for inputting an encryption key (key). Furthermore, the dialog 800 includes a registration button 803 for supporting registration of the input SSID and key, and a cancel button 804 for canceling registration. When the registration button 803 is pressed, the CPU 11 proceeds to S306, and when the cancel button 804 is pressed, all the processes related to the flowchart of FIG.

  In S <b> 306, the CPU 11 receives the AP connection information 19 input from the operation unit 14.

  In step S <b> 307, the CPU 11 stores the AP connection information 19 input from the operation unit 14 in the ROM 13.

  In S <b> 308, the CPU 11 reads the AP connection information 19 from the ROM 13 and transmits it to the capture device 100.

  In step S <b> 309, the CPU 11 controls the wireless communication unit 16 to connect to the access point 150 using the AP connection information 19 in the infrastructure mode.

  In step S <b> 310, the CPU 11 controls the wireless communication unit 16 to start communication with the capture device 100 via the access point 150.

  In S <b> 311, the CPU 11 receives the image data and displays it on the display unit 15.

  As described above, according to the present embodiment, even if the capture device 100 does not include an input device for manually inputting connection information for connecting to the access point 150, the connection information is obtained from the tablet terminal 130. The access point 150 can be connected.

  According to the present embodiment, the CPU 1 uses the AP connection information 9 to the wireless communication unit 6 when the AP connection information 9 for connecting to one or more access points is stored in the ROM 3. Try to connect to the access point. When the wireless communication unit 6 fails to connect to the access point, the CPU 1 reads default connection information 8 for the wireless communication unit 6 of the capture device 100 to connect to the wireless communication unit 16 of the tablet terminal 130 without going through the access point. . 2. The wireless communication system according to claim 1, wherein the CPU 1 causes the wireless communication unit 6 to connect to the wireless communication unit 16 using the read default connection information 8.

  Note that all or part of the above-described functions of the CPU 1 may be mounted on an ASIC (multipurpose integrated circuit). The ROM 3 functions as a default connection information storage unit that stores in advance default connection information used when directly communicating with the second wireless terminal without using an access point. Furthermore, the ROM 3 functions as an access point connection information storage unit that stores the access point connection information when receiving access point connection information used for wireless communication with the access point from the second wireless terminal. Further, when the access point connection information is not stored in the access point connection information storage unit, the CPU 1 and the wireless communication unit 6 use the default connection information stored in the default connection information storage unit to perform the second wireless connection. Connecting to the terminal, receiving the access point connection information from the second wireless terminal, storing the access point connection information in the access point connection information storage means, and storing the access point connection information in the access point connection information storage means And the first wireless communication means that connects to the access point using the access point connection information and communicates with the second wireless terminal via the access point.

  On the other hand, the function of the tablet terminal 130 is also realized by the CPU 11 or ASIC. For example, the CPU 11 functions as a receiving unit that receives input of access point connection information. In addition, the CPU 11 and the wireless communication unit 16 wirelessly communicate directly with the second wireless terminal without passing through the access point, and transmits the access point connection information received by the receiving unit to the first wireless terminal for access. It functions as a second wireless transmission means for connecting to the access point using the point connection information and wirelessly communicating with the first wireless terminal via the access point.

  Incidentally, the tablet terminal 130 may be connected to a plurality of access points 150. In this case, the ROM 13 stores AP connection information 19 for each of the plurality of access points 150 connected in the past. Therefore, the CPU 11 may transmit all the AP connection information 19 stored in the ROM 13 to the capture device 100. Further, the CPU 11 may display all the AP connection information 19 stored in the ROM 13 on the display unit 15 and allow the operator to select the AP connection information 19 to be transmitted to the capture device 100 through the operation unit 14. . The CPU 11 may scan the beacon of the wireless station in advance, determine the access point with the highest reception level, and transmit the AP connection information 19 of the access point with the highest reception level to the capture device 100.

  The capture device 100 may be provided with a button for inputting to the CPU 1 an instruction for forcibly switching to the direct connection (ad hoc) mode. When detecting the operation of this button, the CPU 1 forcibly switches the wireless communication unit 6 to the ad hoc mode. The capture device 100 may establish an ad hoc network with the tablet terminal 130 in this ad hoc mode, and image data may be transmitted / received via the ad hoc network.

  Incidentally, the capture device 100 is not provided with an advanced input device such as a keyboard. Therefore, the capture device 100 alone cannot edit, delete, or add to the contents of the AP connection information 9 written in the ROM 3. Therefore, when the capture device 100 and the tablet terminal 130 are connected in either the ad hoc mode or the infrastructure mode, the AP connection information 9 may be edited, deleted, or added from the tablet terminal 130. For example, when the CPU 11 receives an instruction for executing editing, deletion, or addition of the AP connection information 9 through the operation unit 14, the CPU 11 transmits an editing request, a deletion request, or an addition request to the capture device 100. When receiving this request, the CPU 1 of the capture device 100 reads the AP connection information 9 and transmits it to the tablet terminal 130. The CPU 11 of the tablet terminal 130 displays the received AP connection information 9 on the display unit 15. The CPU 11 transmits the AP connection information 9 edited through the operation unit 14 to the capture device 100. The CPU 11 instructs the capture device 100 to delete the AP connection information 9 instructed to be deleted through the operation unit 14. The CPU 11 instructs the capture device 100 to add the AP connection information 9 added through the operation unit 14. In accordance with these instructions, the CPU 1 of the capture device 100 writes the AP connection information 9 edited or added to the ROM 3 into the ROM 3 or deletes the AP connection information 9 designated to be deleted from the ROM 3.

  In the present embodiment, the capture device 100 and the tablet terminal 130 have been described as examples of wireless terminals. However, as a wireless terminal, the present invention is applicable to any wireless terminal that does not have a key for inputting connection information, such as an image scanner device, an image forming device (eg, a printer, a copier, a multifunction device, a facsimile device). Can be applied. Further, instead of the tablet terminal 130, a notebook personal computer or desktop personal computer having equivalent functions may be used. In this embodiment, the wireless LAN has been described. However, different physical layer standards such as Bluetooth (registered trademark) and wireless USB may be adopted. The tablet terminal can also include a smartphone and a pad terminal.

  In this way, since the terminal 2 can participate in the existing network in which the terminal 2 participates, the terminal 2 does not need to change the network connection. In this case, since the terminal 2 is an existing network, communication with the terminal 1 is possible using the Internet or the like.

  In the present embodiment, the beacon is transmitted first from the capture device 100, but the beacon may be transmitted from the tablet terminal 130 first. In this case, the SSID included in the beacon may be a specific SSID indicating that the wireless terminal provides the AP connection information 19. This is because such an SSID makes it easier for the capture device 100 to find the tablet terminal 130 in a short time.

Claims (16)

A wireless communication system,
An information processing device including an information display unit and an information input unit; and an image input device for inputting an image;
In establishing wireless communication between the information processing apparatus and the image input apparatus via an access point,
The information processing apparatus receives connection information for establishing wireless communication with the image input apparatus via the access point from the information input unit, and then transmits the connection information to the image input apparatus without passing through the access point. While sending connection information directly,
The image input device establishes wireless communication with the information processing device via the connected access point by connecting to the access point using the connection information received from the information processing device. A wireless communication system.   The wireless communication system according to claim 1, wherein the information processing apparatus transmits the connection information directly to the image input apparatus without using the access point in an ad hoc mode. A wireless communication system,
An image input device for inputting an image;
An image display device that displays an image input by the image input device;
The image input device includes:
An image input unit for inputting an image;
A first wireless LAN communication unit;
A first storage unit for storing connection information for the first wireless LAN communication unit to connect to a partner by wireless LAN communication;
A first control unit that controls the first wireless LAN communication unit;
The image display device includes:
An image display unit for displaying an image;
A reception unit that receives input of connection information for connecting to the access point;
A second wireless LAN communication unit;
A second storage unit for storing connection information for the second wireless LAN communication unit to connect to the other party by wireless LAN communication;
A second control unit that controls the second wireless LAN communication unit;
When the first control unit determines that connection information for connecting to the access point is not stored in the first storage unit, the first wireless LAN communication unit does not pass through the access point. Connection information for connecting to the second wireless LAN communication unit of the image display device is read from the first storage unit,
The first wireless LAN communication unit uses the read connection information to connect to the second wireless LAN communication unit of the image display device without using the access point, and to connect to the access point Request connection information for
The second control unit is requested by the second wireless LAN communication unit to connect to the first wireless LAN communication unit without passing through the access point, and connection information for connecting to the access point. And transmitting connection information for connecting to the access point received by the receiving unit via the second wireless LAN communication unit,
When the first control unit receives connection information for connecting to the access point via the first wireless LAN communication unit, the first control unit stores the connection information in the first storage unit,
The wireless communication system, wherein the first wireless LAN communication unit is connected to the access point using connection information for connection to the access point read from the first storage unit.   The first control unit uses the connection information to store the first wireless LAN communication when connection information for connecting to one or more access points is stored in the first storage unit. The first wireless LAN communication unit to connect to the second wireless LAN communication unit without going through the access point when the connection to the access point is attempted and the connection to the access point fails. 4. The wireless communication system according to claim 3, wherein connection information is read out, and the first wireless LAN communication unit is connected to the second wireless LAN communication unit using the read connection information.   When the first control unit receives a connection information editing request for connection to the access point from the image display device, the first control unit edits the connection information in accordance with the editing request, and the edited connection information is The wireless communication system according to claim 3, wherein the wireless communication system is stored in one storage unit.   When the first control unit receives a connection information deletion request for connection to the access point from the image display device, the first control unit deletes the connection information from the first storage unit according to the deletion request. The wireless communication system according to any one of claims 3 to 5.   When the first control unit receives a connection information addition request for connecting to the access point from the image display device, the first control unit stores the connection information in the first storage unit according to the addition request. The wireless communication system according to any one of claims 3 to 6. An image input device for inputting an image and transmitting the image to an image display device by wireless LAN communication,
An image input unit for inputting an image;
A first wireless LAN communication unit;
A first storage unit for storing connection information for the first wireless LAN communication unit to connect to a partner by wireless LAN communication;
A first control unit that controls the first wireless LAN communication unit;
If the first control unit determines that connection information for connecting to the access point is not stored in the first storage unit, the connection for connecting to the image display device without passing through the access point Reading information from the first storage unit;
The first wireless LAN communication unit connects to the image display device without using the access point using the read connection information, requests connection information for connecting to the access point, and The connection information for connecting to the access point received by the reception unit of the image display device is received via the first wireless LAN communication unit, and the connection information is stored in the first storage unit,
The first wireless LAN communication unit is connected to the access point using connection information for connection to the access point read from the first storage unit.   The first control unit uses the connection information to store the first wireless LAN communication when connection information for connecting to one or more access points is stored in the first storage unit. The first wireless LAN communication unit reads connection information for connecting to the image display device without going through the access point when the connection is attempted to the access point and the connection to the access point fails. 9. The image input apparatus according to claim 8, wherein the read connection information is used to connect the first wireless LAN communication unit to the image display apparatus.   When the first control unit receives a connection information editing request for connecting to the access point from the image display device, the first control unit edits the connection information in accordance with the editing request, and the edited connection information is displayed in the first control unit. The image input apparatus according to claim 8, wherein the image input apparatus is stored in one storage unit.   When the first control unit receives a connection information deletion request for connecting to the access point from the image display device, the first control unit deletes the connection information from the first storage unit according to the deletion request. The image input device according to any one of claims 8 to 10.   When the first control unit receives a connection information addition request for connecting to the access point from the image display device, the first control unit stores the connection information in the first storage unit according to the addition request. The image input device according to any one of claims 8 to 11. A wireless communication system,
A first wireless terminal;
A second wireless terminal,
The first wireless terminal is
Default connection information storage means for storing in advance default connection information used when directly communicating with the second wireless terminal without using an access point;
An access point connection information storage unit that stores the access point connection information when receiving the access point connection information used when wirelessly communicating with the access point from the second wireless terminal;
When the access point connection information is not stored in the access point connection information storage means, the default connection information stored in the default connection information storage means is used to connect to the second wireless terminal. The access point connection information is received from the second wireless terminal, the access point connection information is stored in the access point connection information storage means, and the access point connection information is stored in the access point connection information storage means. And a first wireless communication means for connecting to the access point using the access point connection information and communicating with the second wireless terminal via the access point,
The second wireless terminal is
Receiving means for receiving input of the access point connection information;
Directly wirelessly communicates with the second wireless terminal without passing through the access point, transmits the access point connection information received by the receiving unit to the first wireless terminal, and transmits the access point connection information. And a second wireless transmission means for wirelessly communicating with the first wireless terminal via the access point, wherein the first wireless terminal is connected to the access point connection information. A wireless communication system having no user interface for receiving A wireless terminal used in a wireless communication system,
Default connection information storage means for storing in advance default connection information used when directly communicating with another wireless terminal without going through an access point;
When access point connection information used when wirelessly communicating with the access point is input at the other wireless terminal and the access point connection information is received from the other wireless terminal, an access for storing the access point connection information is stored. Point connection information storage means;
When the access point connection information is not stored in the access point connection information storage means, connect to the other wireless terminal using the default connection information stored in the default connection information storage means, When the access point connection information is received from the other wireless terminal, the access point connection information is stored in an access point connection information storage unit, and the access point connection information storage unit stores the access point connection information. Wireless access means for connecting to the access point using the access point connection information and communicating with the other wireless terminal via the access point, the wireless terminal accepting the access point connection information None, characterized by not having a user interface Terminal. A wireless communication system,
An image input device for inputting an image;
An image display device that displays an image input by the image input device;
The image input device includes:
Default connection information storage means for storing in advance default connection information used when directly communicating with the image display device without using an access point;
An access point connection information storage means for storing the access point connection information upon receiving from the image display device access point connection information used when wirelessly communicating with the access point;
When the access point connection information is not stored in the access point connection information storage means, the default connection information stored in the default connection information storage means is used to connect to the image display device, and When the access point connection information is received from the image display device, the access point connection information is stored in the access point connection information storage means, and the access point connection information is stored in the access point connection information storage means. A first wireless communication means for connecting to the access point using point connection information and communicating with the image display device via the access point;
The image display device includes:
Receiving means for receiving input of the access point connection information;
Directly wirelessly communicates with the image display device without passing through the access point, transmits the access point connection information received by the receiving means to the image input device, and uses the access point connection information to A wireless communication system comprising: a second wireless transmission unit that is connected to an access point and wirelessly communicates with the image input device via the access point. An image input device for inputting an image,
Default connection information storage means for storing in advance default connection information used when directly communicating wirelessly with the image display apparatus without going through an access point;
An access point connection information storage unit that stores the access point connection information when the access point connection information is received from the image display device that has received an input of access point connection information used when wirelessly communicating with the access point; ,
When the access point connection information is not stored in the access point connection information storage means, the default connection information stored in the default connection information storage means is used to connect to the image display device, and When the access point connection information is received from the image display device, the access point connection information is stored in the access point connection information storage means, and the access point connection information is stored in the access point connection information storage means. An image input device comprising: first wireless communication means for connecting to the access point using point connection information and communicating with the image display device via the access point.

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