JP4978604B2 - Wireless communication apparatus, connection method and program - Google Patents

Description

  The present invention relates to a wireless connection of a wireless communication apparatus connectable to a wireless network.

  Recently, wireless LAN (Local Area Network / hereinafter, wireless LAN is referred to as “wireless network”) has become widespread. Information leakage may be a problem in wireless networks. Therefore, authentication and encryption are generally used for connection to a wireless network. As an authentication method, for example, shared key authentication (hereinafter referred to as “shared key”), WPA (Wi-Fi Protected Access) -PSK (Pre-Shared Key), and WPA2-PSK are used. As encryption methods, for example, WEP (Wired Equivalent Privacy), TKIP (Temporal Key Integrity Protocol), and AES (Advanced Encryption Standard) are used. As an authentication method, open authentication (no authentication; hereinafter referred to as “open” or “OPEN”) is employed, or no encryption (hereinafter also referred to as “NONE”) is employed as an encryption method. Sometimes it is done.

  In order to connect the wireless communication device to the wireless network, it is necessary to perform predetermined wireless settings on the wireless communication device. Further, in order to connect to a wireless network in which security is ensured, it is necessary to set an authentication method and an encryption method as wireless settings.

  However, it is difficult for the user to understand the authentication method and encryption method of the wireless network, and it is difficult for the user to connect the wireless communication device to the connection target wireless network. For this reason, various methods for easily performing wireless connection of the wireless communication device to the target wireless network have been proposed. For example, a method of automatically performing all settings, such as WPS (Wi-Fi Protected Setup) by Wi-Fi Alliance, has been put into practical use. However, in order to perform such a fully automatic setting, the wireless communication apparatus needs to support a fully automatic setting (for example, the WPS). Other connection methods have also been proposed (see, for example, Patent Document 1).

JP 2006-141012 A JP 2004-180010 A JP 2007-151195 A

  With the widespread use of wireless networks, it is one of the technical problems to be solved to reduce the load on the user for connecting a wireless communication device to a target wireless network.

  An object of this invention is to provide the new radio | wireless communication apparatus which can reduce the user's load in the connection to the object wireless network of connection object, the connection method to an object wireless network, and a program.

  The present invention, which has been made in view of the above-described conventional problems, acquires one security setting method used in a target wireless network to be connected from a signal output by an external device that configures the target wireless network. A plurality of types of other security methods corresponding to one security setting method are sequentially selected, and the connection to the target wireless network is attempted using other security settings of the selected type.

  A first problem solving means reflecting the present invention is a wireless communication device connected to a target wireless network to be connected, which is used in the target wireless network from a signal output from an external device constituting the target wireless network. Authentication method acquisition means for acquiring the authentication method to be performed, and wireless connection means for connecting the wireless communication device to the target wireless network using the acquired authentication method, the wireless connection means, A wireless communication device characterized by sequentially selecting a plurality of types of encryption methods corresponding to the acquired authentication method and attempting to connect to the target wireless network using the sequentially selected types of encryption methods It is. According to this, the encryption method for connecting to the target wireless network is sequentially selected from a plurality of types of encryption methods corresponding to the acquired authentication method, and the target wireless is used using the selected type of encryption method. You can try to connect to the network. Note that the wireless communication device is not necessarily a single device, and may be configured by two devices, for example.

  The second problem solving means is a wireless communication apparatus of the first problem solving means, wherein the wireless connection means has high security among the plurality of types of encryption methods corresponding to the acquired authentication methods. It is characterized by selecting sequentially from encryption methods. According to this, connection can be attempted from an encryption method with high security.

  The third problem solving means is a wireless communication apparatus of the first or second problem solving means, wherein the first type encryption item indicating the first type encryption method corresponding to the acquired authentication method, and Output means for outputting a second type encryption item indicating the second type encryption method and a third type encryption item not specifying the encryption method in a user selectable manner, the wireless connection means; Is characterized in that when the user selects the third type encryption item, the first type encryption method and the second type encryption method are sequentially selected from the encryption methods with higher security. . According to this, when the user tries to connect to the target wireless network, if the encryption method to be used is not specified, the connection can be attempted from the encryption method with high security.

  The fourth problem solving means is a wireless communication apparatus of the first problem solving means, wherein the first type encryption item and the second type indicating the first type encryption method corresponding to the acquired authentication method. Output means for outputting the second type encryption item indicating the encryption method of the user in a selectable manner, and the wireless connection means, when the user selects the first type encryption item, When an attempt is made to connect to the target wireless network using an encryption method and the connection using the first type encryption method fails, the target wireless network is used using the second type encryption method. It is characterized by trying to connect to. According to this, it is possible to try to connect to the target wireless network using the first type encryption method indicated by the encryption item selected by the user, and if this fails, the second type Are sequentially selected, and connection to the target wireless network can be attempted using the second type of encryption method.

  A fifth problem solving means is a wireless communication device connected to a target wireless network to be connected, and an encryption method used in the target wireless network from a signal output from an external device constituting the target wireless network And a wireless connection unit that connects the wireless communication device to the target wireless network using the acquired encryption method, and the wireless connection unit is configured to acquire the acquired wireless communication device. The wireless communication apparatus is characterized in that a plurality of types of authentication methods corresponding to the encryption method are sequentially selected and a connection to the target wireless network is attempted using the sequentially selected types of authentication methods. According to this, an authentication method for connecting to the target wireless network is sequentially selected from a plurality of types of authentication methods corresponding to the acquired encryption method, and the selected type of authentication method is used to enter the target wireless network. You can try to connect. Note that the wireless communication device is not necessarily a single device, and may be configured by two devices, for example.

  The sixth problem solving means is a wireless communication apparatus according to the fifth problem solving means, wherein the wireless connection means has high security among the plurality of types of authentication methods corresponding to the acquired encryption methods. The authentication method is selected sequentially. According to this, connection can be attempted from an authentication method with high security.

  The seventh problem solving means is a wireless communication apparatus according to the fifth or sixth problem solving means, wherein the first type of authentication item indicates a first type of authentication method corresponding to the acquired encryption method, and Output means for outputting a second type authentication item indicating the second type authentication method and a third type authentication item not specifying the authentication method in a selectable manner by the user, the wireless connection means comprising: When the user selects the third type of authentication item, the first type of authentication method and the second type of authentication method are sequentially selected from authentication methods with higher security. According to this, when the user tries to connect to the target wireless network, when an authentication method to be used is not specified, an authentication method with high security can be efficiently selected.

  The eighth problem solving means is the wireless communication apparatus of the fifth problem solving means, wherein the first type authentication item and the second type indicating the first type authentication method corresponding to the acquired encryption method. Output means for outputting a second type of authentication item indicating the authentication method of the user so that the user can select the wireless authentication unit, and the wireless connection unit, when the user selects the first type of authentication item, the first type of authentication item. If the connection to the target wireless network is attempted using the method and the connection using the first type of authentication method fails, the connection to the target wireless network is performed using the second type of authentication method. It is characterized by trying. According to this, it is possible to try to connect to the target wireless network using the first type authentication method indicated by the authentication item selected by the user, and if this fails, the second type authentication is performed. A method can be selected sequentially, and a connection to the target wireless network can be attempted using the second type of authentication method.

  The ninth problem solving means is a wireless communication apparatus according to any one of the first to eighth problem solving means, and obtains the network identifier of the target wireless network, which is specified by a user. Network identifier obtaining means for performing connection to the target wireless network identified by the obtained network identifier. According to this, a connection can be attempted using the wireless network designated by the user as the target wireless network.

  A tenth problem solving means is a connection method to a target wireless network to be connected, executed by a wireless communication device, and is used in the target wireless network from a signal output from an external device constituting the target wireless network An authentication method acquisition step for acquiring the authentication method, and a wireless connection step for connecting the wireless communication device to the target wireless network using the acquired authentication method, wherein the wireless connection step includes the step of A connection method characterized by sequentially selecting a plurality of types of encryption methods corresponding to the acquired authentication method, and attempting to connect to the target wireless network using the sequentially selected types of encryption methods. is there. According to this, the encryption method for connecting to the target wireless network is sequentially selected from a plurality of types of encryption methods corresponding to the acquired authentication method, and the target wireless is used using the selected type of encryption method. You can try to connect to the network.

  An eleventh problem solving means is a method for connecting to a target wireless network to be connected, which is executed by a wireless communication device, and is used in the target wireless network from a signal output from an external device constituting the target wireless network An encryption method acquisition step for acquiring the encryption method to be performed; and a wireless connection step for connecting the wireless communication device to the target wireless network using the acquired encryption method, the wireless connection step Is a method of sequentially selecting a plurality of types of authentication methods corresponding to the acquired encryption method and attempting to connect to the target wireless network using the sequentially selected types of authentication methods. Is the method. According to this, an authentication method for connecting to the target wireless network is sequentially selected from a plurality of types of authentication methods corresponding to the acquired encryption method, and the selected wireless authentication method is used to connect to the target wireless network. You can try to connect.

  A twelfth problem solving means is a computer-readable program for causing a wireless communication device to connect to a target wireless network to be connected, wherein the wireless communication device is output by an external device constituting the target wireless network. An authentication method acquisition means for acquiring an authentication method used in the target wireless network from a signal to be used, and a wireless connection means for connecting the wireless communication device to the target wireless network using the acquired authentication method The wireless connection means sequentially selects a plurality of types of encryption methods corresponding to the acquired authentication method, and uses the sequentially selected types of encryption methods to connect to the target wireless network. It is a program characterized by including a function to try. According to this, the encryption method for connecting to the target wireless network is sequentially selected from a plurality of types of encryption methods corresponding to the acquired authentication method, and the target wireless network is selected using the selected type of encryption method. The wireless communication device can function as a means for attempting to connect to the wireless communication device.

  A thirteenth problem solving means is a computer-readable program for causing a wireless communication device to connect to a target wireless network to be connected, wherein the wireless communication device is output by an external device constituting the target wireless network. And a wireless connection for connecting the wireless communication device to the target wireless network using the encryption method acquisition means for acquiring the encryption method used in the target wireless network from the signal to be transmitted The wireless connection means sequentially selects a plurality of types of authentication methods corresponding to the acquired encryption method, and uses the sequentially selected types of authentication methods to connect to the target wireless network. It is a program characterized by including the function which tries connection. According to this, an authentication method for connecting to the target wireless network is sequentially selected from a plurality of types of authentication methods corresponding to the acquired encryption method, and the selected type of authentication method is used to connect to the target wireless network. The wireless communication device can function as means for attempting connection.

  ADVANTAGE OF THE INVENTION According to this invention, the new radio | wireless communication apparatus which can reduce the user's load in the connection to the connection object radio network, the connection method to the object radio network, and a program can be obtained. Specifically, the user can easily connect the wireless communication apparatus to the target wireless network without selecting an authentication method and / or an encryption method.

  Embodiments for implementing the above problem solving means reflecting the present invention will be described below in detail with reference to the drawings. In addition, the said subject solution means is not limited to the structure as described below, A various structure is employable in the same technical idea.

(System configuration)
FIG. 1 is a diagram illustrating an entire system including a wireless network system. The wireless network system 10 is a wireless network formed by the access point 300A. A multi-function device 100 capable of executing a plurality of functions such as a print function, a scanner function, and a copy function belongs to the wireless network system 10 and is connected to an access point 300A via a wired LAN 600 and a hub 620 (hereinafter, “ It is called a “personal computer”) 400 receives print data from 400 and prints it. Also, the scanned image data is transmitted to the personal computer 400 via the access point 300A. The multifunction device 100 is connected to a personal computer 200 that executes processing related to wireless settings for the multifunction device 100 described later via a USB (Universal Serial Bus) connection. Note that the connection between the multifunction device 100 and the personal computer 200 is not limited to the USB connection, but may be another connection form. For example, the multifunction device 100 and the personal computer 200 may be connected via a wired LAN cable. A wireless connection in an ad hoc mode via a wireless interface included in the personal computer 200 may be used.

  In addition to the access point 300A, there are an access point 300B and an access point 300C forming another wireless network in the vicinity of the MFP 100. There is also a personal computer 500 equipped with a wireless interface. Here, the form of wireless connection performed through the access points 300A, 300B, or 300C is referred to as an infrastructure mode, and the form of wireless connection in which apparatuses directly communicate with each other is referred to as an ad hoc mode (for example, in FIG. If the multi-function device 100 receives the print data, the two are wirelessly connected in the ad hoc mode).

  FIG. 2 is a diagram showing functional blocks of each device shown in FIG. Since the access points 300B and 300C have the same configuration as the access point 300A, the description thereof is omitted. The personal computers 400 and 500 have the same configuration as the personal computer 200 (the personal computers 400 and 500 are different in that they do not store a program related to the wireless setting process described later executed by the personal computer 200). And 500 are the same as those of a conventional personal computer, and thus the description thereof is omitted.

  First, the multifunction peripheral 100 will be described. The multifunction device 100 includes a control unit 110 that controls the device itself. Here, the control unit 110 includes, for example, a CPU that executes arithmetic processing, a ROM that stores various programs, and a RAM as a work area. Various processes are executed by the CPU executing programs stored in the ROM. At that time, various data, for example, data received by the wireless interface (hereinafter referred to as “wireless I / F”) 120 and data input via the operation unit 160 are input and held in the RAM. Accesses the RAM to execute processing using these data. Therefore, various processes are executed by the CPU executing various programs stored in the ROM on the RAM, thereby configuring various means.

  The wireless I / F 120 included in the multifunction device 100 performs wireless communication (wireless connection) in the infrastructure mode with the access point 300A and the like, and wireless communication (wireless connection) in the ad hoc mode with the personal computer 500 and the like. The storage unit 130 is configured by, for example, a non-volatile memory (for example, EEPROM) or a hard disk that stores wireless settings for wireless connection. The printing unit 140 is used to execute a print function and a copy function, and prints print data transmitted from the personal computer 400, for example. The scanner unit 150 scans a document placed on a document placement unit (not drawn). The operation unit 160 is configured by, for example, a direction key, a numeric keyboard capable of inputting characters, a confirmation button, and the like that realize a function as a data input interface. The display unit 170 displays various information. A USB interface (hereinafter referred to as “USB I / F”) 180 is an interface for realizing USB connection.

  Here, the MFP 100 supports open, shared key, WPA-PSK, and WPA2-PSK as authentication methods, and supports WEP, TKIP, and AES as encryption methods. And The multi-function device 100 can also cope with wireless communication without encryption.

  Table 1 shows the relationship between each authentication method, encryption method, authentication method, password length (number of characters) that can be adopted in the encryption method, and compatible communication modes. In Table 1, “authentication method: OPEN” indicates “no authentication (or open authentication)”, and “encryption method: NONE” indicates “no encryption (or encryption invalid)”. As the password length when the authentication method and the encryption method are “shared key and WEP” and “OPEN and WEP”, 16 and 32 characters can be adopted in addition to the number of characters shown in Table 1. In the infrastructure mode, all the authentication methods described in Table 1 can be used, while in the ad hoc mode, only “no authentication” can be used as the authentication method. In the following description, “WPA-PSK” and “WPA2-PSK” are simply referred to as “WPA” and “WPA2”.

  The personal computer 200 controls the device itself, stores a control unit 210 configured by a CPU, a ROM, and a RAM, and a program 224 for executing a wireless setting process for the multifunction device 100 described later, and sets its own wireless setting. And a storage unit 220 for storing. The storage unit 220 is configured with, for example, a hard disk. Various processes are executed by the CPU configuring the control unit 210 executing the program 224 stored in the ROM and the storage unit 220 on the RAM using, for example, data input via the operation unit 230. This constitutes various means.

  In addition, the personal computer 200 includes a keyboard and a mouse, and includes an operation unit 230 as an input interface for various data used for program execution, a display unit 240 for displaying various information, and a USB I / F 250 for realizing USB connection. And a wireless I / F 260 that performs wireless communication (wireless connection) in the infrastructure mode and the ad hoc mode. The basic configuration of the personal computer 200 is the same as that of a personal computer conventionally used.

  The access point 300A controls the own device, and includes a control unit 310 configured by a CPU, a ROM, and a RAM, a wireless I / F 320 that receives and transmits data transmitted from various devices, and a nonvolatile memory, for example. (For example, an EEPROM), and includes a storage unit 330 that stores wireless settings, and a wired interface (described as “wired I / F” in FIG. 2) 340 that realizes connection with the wired LAN 600. The storage unit 330 of the access point 300A includes, as wireless settings, an SSID (Service Set Identifier) for identifying a wireless network, an authentication method, an encryption method, a network password (hereinafter simply referred to as “password”), and the like. Note that the basic configuration of the access point 300A has been conventionally used. It is the same as the access point.

  In the following, two processing methods will be described individually for processing related to wireless setting for the multifunction peripheral 100. After these processes, for example, when the multi-function device 100 can wirelessly connect to the access point 300A, for example, reception of print data from the personal computer 400 as described above, or an image scanned by the multi-function device 100 Data can be transmitted to the personal computer 400.

(First processing form)
The wireless setting in the first processing form is executed via the operation unit 160 of the multifunction device 100. FIG. 3 shows a processing flow executed by the multifunction peripheral 100 in this processing. When the control unit 110 acquires (detects) an instruction to start this process performed by the user via the operation unit 160, the control unit 110 starts this process and displays predetermined information on the display unit 170. In accordance with this display, when the user inputs a wireless network search request instruction via the operation unit 160, the control unit 110 acquires this instruction (S100) and controls the wireless I / F 120 to establish a wireless network in the vicinity. A search is made for the external devices that are formed (according to FIG. 1, access points 300A to 300C and personal computer 500) (S102). The search is performed by receiving the SSID output from the external device. During the search, the control unit 110 displays that effect on the display unit 170 in the form of FIG. Then, the control unit 110 acquires the SSID received by the wireless I / F 120 by the search, displays the acquired SSID in a list in the form of FIG. 4 (ii) (S104), and displays any of the displayed SSIDs. Wait until the user selects one of them as a connection target. Note that the SSID can be directly input (manual input) by the user via the operation unit 160 in addition to the case where the SSID is selected from the displayed ones.

  When the user selects or directly inputs the SSID to be connected through the operation unit 110 and performs a confirmation operation through the operation unit 110, the control unit 110 acquires the selected or directly input SSID (S106). Then, a password input interface (hereinafter referred to as “password input I / F”) is displayed on the display unit 170 in the form of FIG. In the password input I / F, when a password is not set for the wireless network, a message indicating that a confirmation operation is to be performed via the operation unit 160 is performed without inputting the password. In the following description, the SSID that identifies the wireless network formed by the access point 300A is selected (directly input) as the connection target wireless network, and the control unit 110 uses the SSID transmitted from the access point 300A as S106. It is assumed that it was acquired in

  When the user inputs a password via the operation unit 160 according to the display of FIG. 4 (iii), or performs a confirming operation without inputting any password (FIG. 4 (iii), “ The control unit 110 acquires the input password (S110), and then executes the process (1) of S112. In S110, when the confirmation operation is performed without inputting the password, the control unit 110 acquires data indicating that the password is not input (in this case, the number of characters of the password is “0”). ).

  When the authentication method used by the external device is WPA2 or WPA, the control unit 110, together with the SSID in S102, indicates authentication method information (WPA2 that can identify the authentication method used by the external device). Information or information indicating WPA) is received via the wireless I / F 120 and acquired. In S112, the control unit 110 specifies an authentication method based on the authentication method information (including specifying that the authentication method is not WPA2 or WPA. Refer to S200 and S204 in the process (1) shown in FIG. 5 to be described later). The display unit 170 displays the encryption method corresponding to the authentication method that can be selected by the user. When displaying the encryption method, considering that the user does not recognize the encryption method, “unknown” that does not specify the encryption method is also displayed (see FIG. 4 (iv) described later). Details of the process (1) executed in S112 will be described later.

  In S114, the control unit 110 acquires and selects the encryption method selected by the user when the user selects any encryption method (including unknown) from the encryption methods displayed in S112. It is determined whether the encryption method is a predetermined encryption method (AES and TKIP in the case of FIG. 4 (iv)) or “unknown” that does not specify the encryption method (S116). As a result of the determination, when a predetermined encryption method is selected, the control unit 110 executes S118, while when “unknown” is selected, executes S120. Note that the process (2) executed in S118 is a process of trying to connect to the connection target wireless network (the wireless network 10 formed by the access point 300A) based on the encryption method selected by the user. The process (3) executed in S120 is a process of sequentially selecting (changing) an encryption method corresponding to the authentication method indicated by the authentication method information and attempting to connect to the connection target wireless network. Details of the process (2) of S118 and the process (3) of S120 will be described later.

  Then, the control unit 110 displays the result of S118 or S120 on the display unit 170 (S122). Specifically, if the connection is successful (established), a message indicating that the connection is successful (including parameters set as wireless settings) is displayed on the display unit 170. If the connection is unsuccessful, the connection is established. A message having the content of failure is displayed on the display unit 170. Thereafter, the control unit 110 ends this process. In addition, although the structure which displays a connection result by S122 was employ | adopted, it can also be set as the structure printed out by the printing part 140. FIG. Moreover, it is good also as a structure which performs both a display and printing.

  FIG. 5 shows a process flow relating to the process (1) of S112 of FIG. First, the control unit 110 determines whether or not the authentication method information acquired in S102 (FIG. 3) indicates WPA2 (S200). As a result of the determination, if it is WPA2 (S200: YES), the control unit 110 causes the display unit 170 to indicate that the authentication method of the access point 300A selected by the user in S106 is WPA2, and an encryption method corresponding to WPA2. “AES”, “TKIP”, and “unknown” are displayed as options that the user can select (S202). FIG. 4 (iv) shows the display mode in S202 (FIG. 5).

  If the determination in S200 is negative (S200: NO), the control unit 110 determines whether or not the authentication method information indicates WPA (S204). As a result of the determination, if it is WPA (S204: YES), the control unit 110 displays on the display unit 170 that the authentication method used by the access point 300A selected by the user in S106 is WPA, and corresponds to WPA. “AES”, “TKIP”, and “Unknown” are displayed as options that can be selected by the user (S206).

  When the determination in S204 is negative (S204: NO), the control unit 110 causes the display unit 170 to display “WEP” and “NONE” which are encryption methods used in authentication methods other than WPA2 and WPA (see Table 1). And “Unknown” are displayed as options that can be selected by the user (S208). In addition, the control part 110 complete | finishes this process (1), after performing S202, S206, and S208.

  FIG. 6 shows a process flow relating to the process (2) of S118. First, the control unit 110 determines whether or not the encryption method acquired in S114 (FIG. 3) indicates AES based on the user's selection (S300). As a result of the determination, if it is not AES (S300: NO), the control unit 110 shifts the process to S312. If it is AES (S300: YES), it executes S302. In addition, when the authentication method information acquired in S102 (FIG. 3) indicates WPA2 or WPA (when the determination is affirmative (YES) in S200 or S204 of the process (1) illustrated in FIG. 5), There is a possibility that AES is selected by the user as an encryption method in S114 (see Table 1).

  In S302, the control unit 110 sets the connection to the access point 300A using a combination of “the authentication method (WPA2 or WPA) and AES indicated by the authentication method information acquired in S102” as a setting parameter as the authentication method and the encryption method. An attempt is made to determine whether or not the connection is successful (S304).

  If the connection fails as a result of the determination (S304: NO), the control unit 110 tries to connect to the access point 300A again with the setting in which the encryption method is changed to TKIP among the parameters set in S302 ( S306), it is determined whether or not the connection is successful (S308). If the connection fails as a result of the determination (S308: NO), the control unit 110 ends the process (2). When the connection is successful in S304 or S308 (S304, S308: YES), the control unit 110 holds the parameters (authentication method and encryption method) used for connection in the storage unit 130 as parameters for wireless setting (S310). ), And the process (2) is terminated.

  In S <b> 312, the control unit 110 determines whether the encryption method acquired in S <b> 114 (FIG. 3) indicates TKIP based on the user's selection (S <b> 312). As a result of the determination, if it is not TKIP (S312: NO), the control unit 110 proceeds to S324, while if it is TKIP (S312: YES), executes S314. In addition, when the authentication method information acquired in S102 (FIG. 3) indicates WPA2 or WPA (when the determination is affirmative (YES) in S200 or S204 of the process (1) illustrated in FIG. 5), There is a possibility that TKIP is selected as the encryption method by the user in S114 (see Table 1).

  In S314, the control unit 110 sets the connection to the access point 300A using the combination of “the authentication method (WPA2 or WPA) and TKIP indicated by the authentication method information acquired in S102 and TKIP” as a setting parameter as the authentication method and the encryption method. It is determined whether or not the connection is successful (S316).

  If the connection fails as a result of the determination (S316: NO), the control unit 110 tries to connect to the access point 300A again with the setting in which the encryption method is changed to AES among the parameters set in S314 ( S318), it is determined whether or not the connection is successful (S320). If the connection fails as a result of the determination (S320: NO), the control unit 110 ends the process (2). When the connection is successful in S316 or S320 (S316, S320: YES), the control unit 110 holds the parameters (authentication method and encryption method) used for connection in the storage unit 130 as parameters for wireless setting (S322). ), And the process (2) is terminated.

  If it is determined that the connection has failed in S304 or S316 (S304, S316: NO), S306 or S318 is executed. However, these encryption connection attempts are not based on user selection. Therefore, when it is determined that the connection has failed in S304 or the like (S304, S316: NO), the process (2) may be terminated without executing S306 or S318.

  In S324, the control unit 110 determines whether or not the encryption method acquired in S114 (FIG. 3) indicates WEP based on the user's selection. As a result of the determination, if it is not WEP (S324: NO), the control unit 110 shifts the processing to S336, while if it is WEP (S324: YES), executes S326. If authentication method information has not been acquired in S102 (if the determination in S204 of process (1) shown in FIG. 5 is negative (NO)), WEP may have been acquired as the encryption method in S114. (See Table 1).

  In step S326, the control unit 110 attempts to connect to the access point 300A using the combination of “shared key (described as“ SHARED ”in FIG. 6) and WEP” and WEP as the authentication method and encryption method, and succeeds in the connection. It is determined whether or not (S328).

  If the connection fails as a result of the determination (S328: NO), the control unit 110 again sets the authentication method among the parameters set in S326 to open (described as “OPEN” in FIG. 6). Connection to the access point 300A is attempted (S330), and it is determined whether or not the connection is successful (S332). If the connection fails as a result of the determination (S332: NO), the control unit 110 ends the process (2). When the connection is successful in S328 or S332 (S328, S332: YES), the control unit 110 stores the parameters (authentication method and encryption method) used for the connection in the storage unit 130 as parameters for wireless setting (S334). ), And the process (2) is terminated.

  Here, when the encryption method is WEP (S324: YES), the control unit 110 selects a setting parameter in consideration of security. That is, a configuration is adopted in which “shared key and WEP”, which is a combination of an authentication method and an encryption method with high security, is selected in preference to “open and WEP” and a connection is attempted by this combination.

  In S336, the control unit 110 uses the combination of “open (described as“ OPEN ”in FIG. 6) and non-encrypted (described as“ NONE ”in FIG. 6)” as an authentication method and an encryption method as a setting parameter. A connection to the point 300A is attempted, and it is determined whether or not the connection is successful (S338). If the connection fails as a result of the determination (S338: NO), the control unit 110 ends the process (2). If the connection is successful (S338: YES), the control unit 110 uses the parameters (authentication) used for the connection. (Method and encryption method) are stored in the storage unit 130 as parameters for wireless setting (S340), and the process (2) is terminated.

  FIG. 7 shows a process flow relating to the process (3) of S120 of FIG. First, the control unit 110 determines whether or not the password length (number of characters) of the password input by the user in S110 (FIG. 3) is “0” (S400). As a result of the determination, if the password length is “0” (S400: YES), the control unit 110 proceeds to S436, while if the password length is not “0” (S400: NO), executes S402. . The processing after S436 will be described later.

  In S402, the control unit 110 determines whether or not the authentication method information acquired in S102 (FIG. 3) indicates WPA2 (S402). As a result of the determination, if it is not WPA2 (S402: NO), the control unit 110 shifts the process to S414, while if it is WPA2 (S402: YES), executes S404. Note that the determination in S402 is the same as S200 in the process (1) shown in FIG. In S404, the control unit 110 attempts to connect to the access point 300A using the combination of “WPA2 and AES” as the setting method of the authentication method and the encryption method, and determines whether the connection is successful (S406). If the connection fails as a result of the determination (S406: NO), the control unit 110 tries to connect to the access point 300A again with the setting in which the encryption method is changed to TKIP among the parameters set in S404 ( S408), it is determined whether the connection is successful (S410). If the connection fails as a result of the determination (S410: NO), the control unit 110 ends the process (3). When the connection is successful in S406 or S410 (S406, S410: YES), the control unit 110 holds the parameters (authentication method and encryption method) used for the connection in the storage unit 130 as parameters for wireless setting (S412). ), And the process (3) is terminated.

  In S414, the control unit 110 determines whether or not the authentication scheme information acquired in S102 (FIG. 3) indicates WPA (S414). As a result of the determination, if it is not WPA (S414: NO), the control unit 110 shifts the process to S426, while if it is WPA (S414: YES), executes S416. Note that the determination in S414 is the same as S204 in the process (1) shown in FIG. In S416, the control unit 110 attempts to connect to the access point 300A using the combination of “WPA and AES” as the setting method of the authentication method and the encryption method, and determines whether the connection is successful (S418). If the connection fails as a result of the determination (S418: NO), the control unit 110 tries to connect to the access point 300A again with the setting in which the encryption method is changed to TKIP among the parameters set in S416 ( S420), it is determined whether the connection is successful (S422). As a result of the determination, when the connection fails (S422: NO), the control unit 110 ends the process (3). When the connection is successful in S418 or S422 (S418, S422: YES), the control unit 110 stores the parameters (authentication method and encryption method) used for the connection in the storage unit 130 as parameters for wireless setting. (S424) and process (3) is terminated.

  Here, when the determination is affirmative in S402 (S402: YES), the control unit 110 selects AES as the encryption method in preference to TKIP, and the authentication method (WPA2) and each encryption method (AES, The connection to the access point 300A is attempted in combination with TKIP). Similarly, when the determination in S404 is affirmative (S404: YES), the control unit 110 selects AES as the encryption method in preference to TKIP, and the authentication method (WPA) and each encryption method (AES, The connection to the access point 300A is attempted in combination with TKIP). This is because AES is an encryption method with higher security than TKIP.

  In step S426, the control unit 110 attempts to connect to the access point 300A using the combination of “shared key (described as“ SHARED ”in FIG. 7) and WEP” and WEP as the authentication method and encryption method, and succeeds in the connection. It is determined whether or not (S428). If the connection fails as a result of the determination (S428: NO), the control unit 110 again sets the authentication method among the parameters set in S426 to open (described as “OPEN” in FIG. 7). A connection to the access point 300A is attempted (S430), and it is determined whether or not the connection is successful (S432). If the connection fails as a result of the determination (S432: NO), the control unit 110 ends the process (3). When the connection is successful in S428 or S432 (S428, S432: YES), the control unit 110 stores the parameters (authentication method and encryption method) used for the connection in the storage unit 130 as parameters for wireless setting (S434). ), And the process (3) is terminated. As a combination of the authentication method and the encryption method, a configuration in which “shared key and WEP” is selected with priority over “open and WEP” (see S426 and S430) is adopted. This is due to the same reason as described in the process (2).

  In S436, the control unit 110 tries to connect to the access point 300A using the combination of “open and no encryption (indicated as“ NONE ”in FIG. 7)” as the authentication method and encryption method as a setting parameter. It is determined whether or not it is successful (S438). If the connection fails as a result of the determination (S438: NO), the control unit 110 ends the process (3). If the connection is successful (S438: YES), the control unit 110 uses the parameters (authentication) used for the connection. (Method and encryption method) are stored in the storage unit 130 as parameters for wireless setting (S440), and the process (3) is terminated.

(Advantageous effects based on the first processing mode)
The advantageous effects based on the above-described configuration (processing) will be listed.
(1) As an encryption method option, a configuration is adopted in which an appropriate encryption method corresponding to the authentication method specified based on the authentication method information is displayed on the display unit 170 so that the user can select (S202 in FIG. 5). S206 and S208). According to this, even if selected, it is possible to prevent the user from selecting an inappropriate encryption method that fails to connect.

  (2) In the configuration of (1) above, “unknown” is selected as an option in consideration of the fact that the user cannot select the correct encryption method together with an appropriate encryption method corresponding to the authentication method specified based on the authentication method information. The structure displayed on the display unit 170 is employed (S202, S206, and S208 in FIG. 5). Then, when “unknown” is selected, encryption schemes that increase security in combination with the authentication scheme are sequentially selected, connection is attempted (for example, refer to S404 and S408 in FIG. 7), and parameters that are successfully connected are set. The configuration held in the storage unit 130 was adopted (S412, S424, S434 in FIG. 7). According to this, even if the user is not familiar with the wireless connection, it is possible to realize a wireless connection that ensures security when connecting to the wireless network.

(Second processing mode)
The wireless setting in the second processing form is executed via the operation unit 160 of the multifunction peripheral 100, as in the first processing form. FIG. 8 shows a processing flow executed by the multifunction peripheral 100 in this processing. In the first processing mode (FIG. 3), the subsequent processing related to wireless setting is appropriately executed based on the authentication method information indicating whether the authentication method received together with the SSID in S102 is WPA2 or WPA. On the other hand, in the second processing mode, processing related to subsequent wireless settings is appropriately executed based on the encryption method information received together with the SSID in S502 described later. They differ in this respect.

  First, the control part 110 performs S500-S510. In addition, each process of S500-S510 respond | corresponds to each process of S100-S110 shown in FIG. 3 of a 1st process form, and it abbreviate | omits for details. As described above, in S502, the control unit 110 receives and acquires the encryption method information that can specify the encryption method used by the external apparatus via the wireless I / F 120 together with the SSID. In the following description, as in the case of the first processing mode, the control unit 110 will be described assuming that the SSID transmitted from the access point 300A is acquired in S506.

  In S512, the control unit 110 specifies the encryption method based on the encryption method information received in S502 (see S600, S604, and S608 in the process (4) shown in FIG. 9 described later), and the specified encryption method. The display unit 170 displays an authentication method corresponding to the above so that the user can select it. When displaying the authentication method, considering that the user does not recognize the authentication method, “Unknown” that does not specify the authentication method is also displayed (see FIG. 9 described later). Details of the process (4) executed in S512 will be described later.

  In S514, when the user selects any authentication method (including unknown) from the authentication methods displayed in S512, the control unit 110 acquires the authentication method selected by the user and selects the selected authentication method. However, it is determined whether the authentication method is a predetermined authentication method (WPA2 and WPA in the case of FIG. 9) or “unknown” that does not specify the authentication method (S516). As a result of the determination, when a predetermined authentication method is selected, the control unit 110 executes S518, while when “unknown” is selected, executes S520. Note that the process (5) executed in S518 is a process of trying to connect to the connection target wireless network (the wireless network 10 formed by the access point 300A) based on the authentication method selected by the user. The process (6) executed in S520 is a process of sequentially selecting (changing) authentication methods corresponding to the encryption method indicated by the encryption method information and attempting to connect to the connection target wireless network. Details of step S518 (5) and step S520 (6) will be described later.

  And the control part 110 displays the result of S518 or S520 on the display part 170 (S522). Note that S522 corresponds to S122 shown in FIG. 3 of the first processing form, and the details are omitted.

  FIG. 9 shows a processing flow relating to the processing (4) of S512 of FIG. First, the control unit 110 determines whether or not the encryption method information acquired in S502 (FIG. 8) indicates AES (S600). If the result of the determination is AES (S600: YES), the control unit 110 displays on the display unit 170 that the encryption method used by the access point 300A selected by the user in S506 is AES, and supports AES. “WPA2”, “WPA”, and “Unknown” are displayed as options that can be selected by the user (S602). FIG. 10 shows the display mode in S602.

  When the determination in S600 is negative (S600: NO), the control unit 110 determines whether the encryption method information indicates TKIP (S604). If the result of the determination is TKIP (S604: YES), the control unit 110 displays on the display unit 170 that the encryption method used by the access point 300A selected by the user in S506 is TKIP, and supports TKIP. “WPA2”, “WPA”, and “Unknown” are displayed as choices that can be selected by the user (S606).

  When the determination in S604 is negative (S604: NO), the control unit 110 determines whether or not the encryption method information indicates WEP (S608). As a result of the determination, if it is WEP (S608: YES), the control unit 110 displays on the display unit 170 that the encryption method used by the access point 300A selected by the user in S506 is WEP, and corresponds to WEP. “Shared key (described as“ SHARED ”in FIG. 9)”, “Open (described as“ OPEN ”in FIG. 9)”, and “Unknown” as authentication methods to be displayed are displayed as options that can be selected by the user ( S610).

  When the determination in S608 is negative (S608: NO), the control unit 110 causes the display unit 170 to indicate that the encryption method is “no encryption (described as“ NONE ”in FIG. 9)” and “encryption”. “Open” is displayed as an option that can be selected by the user as an authentication method corresponding to “No change” (S612). In the case of the display in S612, the user does not need to select the authentication method, and therefore the user selection in S516 is unnecessary, and after performing the display in S610 for a predetermined time, the control unit 110 moves the process to S518. It can also be set as the structure to do. In such a case, the operation burden on the user can be reduced. The control part 110 complete | finishes this process (4), after performing S602, S606, S610, and S612.

  FIG. 11 shows a process flow relating to the process (5) of S518 of FIG. First, the control unit 110 determines whether or not the authentication method acquired in S514 (FIG. 8) indicates WPA2 based on the user's selection (S700). As a result of the determination, if it is not WPA2 (S700: NO), the control unit 110 shifts the process to S712, while if it is WPA2 (S700: YES), executes S702. When the encryption method information acquired in S502 (FIG. 8) indicates AES or TKIP (when the determination is affirmative (YES) in S600 or S604 of the process (4) shown in FIG. 9). , There is a possibility that WPA2 is selected as the authentication method by the user in S514 (see Table 1).

  In S702, the control unit 110 sets a combination of “encryption method (AES or TKIP) indicated by the encryption method information acquired in WPA2 and S502” as an authentication method and an encryption method to the access point 300A. Connection is attempted, and it is determined whether the connection is successful (S704).

  If the connection fails as a result of the determination (S704: NO), the control unit 110 tries to connect to the access point 300A again with the setting in which the authentication method is changed to WPA among the parameters set in S702 (S706). It is determined whether or not the connection is successful (S708). If the connection fails as a result of the determination (S708: NO), the control unit 110 ends the process (5). When the connection is successful in S704 or S708 (S704, S708: YES), the control unit 110 stores the parameters (authentication method and encryption method) used for the connection in the storage unit 130 as parameters for wireless setting (S710). ) And process (5) is terminated.

  In S712, the control unit 110 determines whether the authentication method acquired in S514 (FIG. 8) indicates WPA based on the user's selection (S712). As a result of the determination, if it is not WPA (S712: NO), the control unit 110 shifts the processing to S724, while if it is WPA (S712: YES), executes S714. When the encryption method information acquired in S502 (FIG. 8) indicates AES or TKIP (when the determination is affirmative (YES) in S600 or S604 of the process (4) shown in FIG. 9). , There is a possibility that WPA is selected as the encryption method by the user in S514 (see Table 1).

  In S714, the control unit 110 sets the combination of “the encryption method (AES or TKIP) indicated by the encryption method information acquired in WPA and S502” ”as the authentication method and the encryption method to the access point 300A. Connection is attempted, and it is determined whether the connection is successful (S716).

  If the connection fails as a result of the determination (S716: NO), the control unit 110 tries again to connect to the access point 300A with the setting in which the authentication method is changed to WPA2 among the parameters set in S714 (S718). ), It is determined whether or not the connection is successful (S720). If the connection fails as a result of the determination (S720: NO), the control unit 110 ends the process (5). When the connection is successful in S716 or S720 (S716, S720: YES), the control unit 110 holds the parameters (authentication method and encryption method) used for the connection in the storage unit 130 as parameters for wireless setting (S722). ) And process (5) is terminated.

  In S724, the control unit 110 determines whether or not the authentication method acquired in S514 (FIG. 8) indicates a shared key (described as “SHARED” in FIG. 11) based on the user's selection. As a result of the determination, if it is not a shared key (S724: NO), the control unit 110 shifts the process to S736, while if it is a shared key (S724: YES), executes S726. If the encryption method information acquired in S502 (FIG. 8) indicates WEP (if the determination in S608 of the process (4) shown in FIG. 9 is affirmative (YES)), the encryption is performed in S514. There is a possibility that a shared key has been acquired as a conversion method (see Table 1).

  In step S726, the control unit 110 attempts to connect to the access point 300A using the combination of “shared key and WEP” as the setting method for the authentication method and the encryption method, and determines whether the connection is successful (S728). .

  If the connection fails as a result of the determination (S728: NO), the control unit 110 again sets the authentication method among the parameters set in S726 to open (described as “OPEN” in FIG. 11). An attempt is made to connect to the access point 300A (S730), and it is determined whether or not the connection is successful (S732). As a result of the determination, when the connection fails (S732: NO), the control unit 110 ends the process (5). When the connection is successful in S728 or S732 (S728, S732: YES), the control unit 110 stores the parameters (authentication method and encryption method) used for the connection in the storage unit 130 as parameters for wireless setting (S734). ) And process (5) is terminated.

  If it is determined that the connection has failed in S704, S716, or S728 (S704, S716, S728: NO), S706, S718, or S730 is executed. Therefore, if it is determined in S704 or the like that the connection has failed (S704, S716, S728: NO), the process (5) may be terminated without executing S706 or the like. .

  In step S736, the control unit 110 attempts to connect to the access point 300A using the combination of “open and no encryption (described as“ NONE ”in FIG. 11)” as the authentication method and encryption method as a setting parameter. It is determined whether or not it is successful (S738). If the connection fails as a result of the determination (S738: NO), the control unit 110 ends the process (5). If the connection is successful (S738: YES), the control unit 110 uses the parameters (authentication) used for the connection. (Method and encryption method) are stored in the storage unit 130 as parameters for wireless setting (S740), and the process (5) is terminated.

  FIG. 12 shows a process flow relating to the process (6) of S520. First, the control unit 110 determines whether or not the password length (number of characters) of the password input by the user in S510 (FIG. 8) is “0” (S800). As a result of the determination, if the password length is “0” (S800: YES), the control unit 110 proceeds to S836, while if the password length is not “0” (S800: NO), executes S802. . The processing after S836 will be described later.

  In S802, the control unit 110 determines whether or not the encryption method information acquired in S502 (FIG. 8) indicates AES (S802). As a result of the determination, if it is not AES (S802: NO), the control unit 110 shifts the process to S814, while if it is AES (S802: YES), executes S804. Note that the determination in S802 is the same as S600 in the process (4) shown in FIG. In step S804, the control unit 110 tries to connect to the access point 300A using the combination of “AES and WPA2” as the encryption method and the authentication method as parameters for setting, and determines whether the connection is successful (S806). If the connection fails as a result of the determination (S806: NO), the control unit 110 tries to connect to the access point 300A again with the setting in which the authentication method is changed to WPA among the parameters set in S804 (S808). ), It is determined whether or not the connection is successful (S810). If the connection fails as a result of the determination (S810: NO), the control unit 110 ends the process (6). When the connection is successful in S806 or S810 (S806, S810: YES), the control unit 110 stores the parameters (encryption method and authentication method) used for the connection in the storage unit 130 as parameters for wireless setting (S812). ), And the process (6) is terminated.

  In S814, the control unit 110 determines whether or not the encryption method information acquired in S502 (FIG. 8) indicates TKIP (S814). As a result of the determination, if it is not TKIP (S814: NO), the control unit 110 proceeds to S826, while if it is TKIP (S814: YES), executes S816. Note that the determination in S814 is the same as S604 in the process (4) shown in FIG. In step S816, the control unit 110 attempts to connect to the access point 300A using the combination of “TKIP and WPA2” as the encryption method and the authentication method as parameters for setting, and determines whether the connection is successful (S818). If the connection fails as a result of the determination (S818: NO), the control unit 110 tries again to connect to the access point 300A with the setting in which the authentication method is changed to WPA among the parameters set in S816 (S820). ), It is determined whether or not the connection is successful (S822). If the connection fails as a result of the determination (S822: NO), the control unit 110 ends the process (6). When the connection is successful in S818 or S822 (S818, S822: YES), the control unit 110 stores the parameters (encryption method and authentication method) used for the connection in the storage unit 130 as parameters for wireless setting. (S824), the process (6) is terminated.

  If the determination in S802 is affirmative (S802: YES), the control unit 110 selects WPA2 as an authentication method in preference to WPA, and selects an encryption method (AES) and each authentication method (WPA2, WPA). ) And trying to connect to the access point 300A. Similarly, if the determination in S814 is affirmative (S814: YES), the control unit 110 selects WPA2 as an authentication method in preference to WPA, and selects the encryption method (TKIP) and each authentication method (WPA2, WPA). ) And trying to connect to the access point 300A. This is because WPA2 is an authentication method with higher security than WPA.

  In step S826, the control unit 110 tries to connect to the access point 300A using the combination of “WEP and shared key (described as“ SHARED ”in FIG. 12)” as the encryption method and authentication method, and succeeds in the connection. It is determined whether or not (S828). If the connection fails as a result of the determination (S828: NO), the control unit 110 again sets the authentication method among the parameters set in S826 to open (described as “OPEN” in FIG. 12). An attempt is made to connect to the access point 300A (S830), and it is determined whether or not the connection is successful (S832). If the connection fails as a result of the determination (S832: NO), the control unit 110 ends the process (6). When the connection is successful in S828 or S832 (S828, S832: YES), the control unit 110 stores the parameters (encryption method and authentication method) used for the connection in the storage unit 130 as parameters for wireless setting (S834). ), And the process (6) is terminated. As a combination of the encryption method and the authentication method, a configuration is adopted in which “WEP and shared key” is selected with priority over “WEP and open” (see S826 and S830). This is due to the same reason as described in the process (2) shown in FIG. 6 of the first process form.

  In step S836, the control unit 110 attempts to connect to the access point 300A using the combination of “no encryption (indicated as“ NONE ”in FIG. 12) and open” as an encryption method and an authentication method as a setting parameter. It is determined whether or not it is successful (S838). As a result of the determination, if the connection fails (S838: NO), the control unit 110 ends the process (6). If the connection is successful (S838: YES), the control unit 110 uses the parameters (encryption) used for the connection. And the authentication method) are stored in the storage unit 130 as parameters for wireless setting (S840), and the process (6) is terminated.

(Advantageous effects based on the second processing mode)
The advantageous effects based on the above-described configuration (processing) will be listed.
(1) As an authentication method option, a configuration is adopted in which an appropriate authentication method corresponding to the encryption method specified based on the encryption method information is displayed on the display unit 170 so that the user can select (S602 in FIG. 9). S606 and S610). According to this, even if it is selected, it is possible to prevent the user from selecting an inappropriate authentication method that fails to connect.

  (2) In the configuration of (1) above, “unknown” is selected as an option in consideration of the fact that the user cannot select the correct authentication method together with an appropriate authentication method corresponding to the encryption method specified based on the encryption method information. The structure displayed on the display unit 170 is adopted (S602, S606, and S610 in FIG. 9). When “Unknown” is selected, authentication methods that increase security in combination with the encryption method are sequentially selected, and connection is attempted (for example, see S804 and S808 in FIG. 12). The configuration held in the storage unit 130 was adopted (S812, S824, S834 in FIG. 12). According to this, even if the user is not familiar with the wireless connection, it is possible to realize a wireless connection that ensures security when connecting to the wireless network.

  The multi-function device 100 in the first processing form and the second processing form corresponds to the wireless communication apparatus in the present invention. In addition, the control unit 110 of the multifunction machine 100 corresponds to each unit in the present invention.

(Modification of the above embodiment)
In the above-described embodiment based on the first processing mode and the second processing mode, the configuration in which the wireless setting operation is completed by the multifunction device 100 has been described as an example. However, for example, a configuration using a personal computer 200 connected via USB may be employed in the multifunction peripheral 100 illustrated in FIGS. 1 and 2. In such a configuration, the processing starts when the dedicated program 224 installed in the storage unit 220 of the personal computer 200 is activated.

  The outline will be described by taking the first processing form as an example. After starting the program 224, the control unit 210 displays predetermined information on the display unit 240. In accordance with this display, when the user inputs a wireless network search request instruction via the operation unit 230, the control unit 210 acquires this instruction (see S100 in FIG. 3), controls the USB I / F 250, and performs an SSID search. The request is transmitted to the multifunction device 100.

  The control unit 110 of the MFP 100 controls the USB I / F 180 to receive and acquire the SSID search request transmitted from the personal computer 200. Then, the same process as S102 of FIG. 3 is performed. After executing the process corresponding to S102, the control unit 110 of the multifunction peripheral 100 transmits the SSID list acquired by the search to the personal computer 200. The control unit 210 of the personal computer 200 that has received the SSID list sequentially executes the processes corresponding to S104 to S112 in FIG. 3 for the SSID list. The control unit 210 of the personal computer acquires the selected encryption method when the user selects any of the options in the process corresponding to S114 in FIG. 3, and the acquired encryption method is a predetermined encryption. It is determined whether the method is “unknown” or not (see S116 in FIG. 3).

  As a result of the determination, when it is determined that the user has selected a predetermined encryption method, the control unit 210 of the personal computer 200 requests the MFP 100 to make a connection based on the encryption method selected by the user. The control unit 110 of the MFP 100 that has received the request executes the same process as the process (2) executed in S118 of FIG. 3 and transmits the connection result to the personal computer 200 by controlling the USB I / F 180. The control unit 210 of the personal computer 200 receives the transmitted connection result and displays the received connection result on the display unit 240 (see S122 in FIG. 3).

  On the other hand, if it is determined that the user has selected “Unknown”, the control unit 210 of the personal computer 200 sends a request for executing the same process as the process (3) executed in S120 of FIG. 3 to the USB I / F 250. Is transmitted to the multifunction peripheral 100. The control unit 110 of the MFP 100 receives this request, executes the same process as the process (3), and transmits the connection result to the personal computer 200 by controlling the USB I / F 180. The control unit 210 of the personal computer 200 receives the transmitted connection result and displays the received connection result on the display unit 240 (see S122 in FIG. 3).

  According to such a configuration employing the personal computer 200, the selection of the SSID and the input of the password can be executed via the operation unit 230 of the personal computer 200 having excellent operability. Therefore, these inputs can be easily performed. it can. In addition, the displayed SSID or connection result can be confirmed on the display unit 240 of the personal computer 200.

  Note that the multifunction device 100 (or the multifunction device 100 and the personal computer 200) in the modification corresponds to the wireless communication device in the present invention.

The figure which shows the whole system in embodiment of this invention The figure which shows the functional block of each apparatus which comprises the system in embodiment of this invention. The figure which shows the radio | wireless setting process flow in the 1st processing form of embodiment of this invention. The figure which shows the display aspect on the display part at the time of the wireless setting in the 1st processing form of embodiment of this invention. The figure which shows the processing flow regarding the process (1) of embodiment of this invention. The figure which shows the processing flow regarding the process (2) of embodiment of this invention. The figure which shows the processing flow regarding the process (3) of embodiment of this invention. The figure which shows the radio | wireless setting process flow in the 2nd processing form of embodiment of this invention. The figure which shows the processing flow regarding the process (4) of embodiment of this invention. The figure which shows the display aspect on the display part at the time of the wireless setting in the 2nd processing form of embodiment of this invention. The figure which shows the processing flow regarding the process (5) of embodiment of this invention. The figure which shows the processing flow regarding the process (6) of embodiment of this invention.

Explanation of symbols

10 wireless network 100 multifunction device 200,500 personal computer 110,210 control unit 120 wireless I / F
130, 220 storage unit 224 program 300A-C access point

Claims (13)

A wireless communication device connected to a target wireless network to be connected,
Authentication method acquisition means for acquiring an authentication method used in the target wireless network from a signal output by an external device constituting the target wireless network;
Wireless connection means for connecting the wireless communication device to the target wireless network using the acquired authentication method,
The wireless connection means sequentially selects a plurality of types of encryption methods corresponding to the acquired authentication method, and attempts to connect to the target wireless network using the sequentially selected types of encryption methods. A wireless communication device.   The wireless communication apparatus according to claim 1, wherein the wireless connection unit sequentially selects an encryption method with high security among the plurality of types of encryption methods corresponding to the acquired authentication method. A first type encryption item indicating a first type encryption method corresponding to the acquired authentication method, a second type encryption item indicating a second type encryption method, and a first type that does not specify the encryption method. An output means for outputting three types of encryption items in a selectable manner by the user;
When the user selects a third type encryption item, the wireless connection means sequentially selects a security method from the first type encryption method and the second type encryption method. The wireless communication device according to claim 1, wherein the wireless communication device is a wireless communication device. Output means for selectively outputting a first type encryption item indicating the first type encryption method and a second type encryption item indicating the second type encryption method corresponding to the acquired authentication method. With
When the user selects the first type encryption item, the wireless connection means tries to connect to the target wireless network using the first type encryption method, and sets the first type encryption method. The wireless communication apparatus according to claim 1, wherein if the connection used fails, connection to the target wireless network is attempted using the second type encryption method. A wireless communication device connected to a target wireless network to be connected,
An encryption method acquisition means for acquiring an encryption method used in the target wireless network from a signal output by an external device constituting the target wireless network;
Wireless connection means for connecting the wireless communication device to the target wireless network using the acquired encryption method,
The wireless connection means sequentially selects a plurality of types of authentication methods corresponding to the acquired encryption method, and attempts to connect to the target wireless network using the sequentially selected types of authentication methods. A wireless communication device.   6. The wireless communication apparatus according to claim 5, wherein the wireless connection unit sequentially selects an authentication method with a high security among the plurality of types of authentication methods corresponding to the acquired encryption method. A first type authentication item indicating a first type authentication method corresponding to the acquired encryption method, a second type authentication item indicating a second type authentication method, and a third type not specifying the authentication method And an output means for outputting the authentication items in a selectable manner by the user,
When the user selects a third type authentication item, the wireless connection unit sequentially selects an authentication method with high security from the first type authentication method and the second type authentication method. The wireless communication apparatus according to claim 5 or 6. An output means for outputting the first type authentication item indicating the first type authentication method corresponding to the acquired encryption method and the second type authentication item indicating the second type authentication method in a selectable manner by the user; , Prepare,
When the user selects the first type of authentication item, the wireless connection unit attempts to connect to the target wireless network using the first type of authentication method, and uses the first type of authentication method. The wireless communication apparatus according to claim 5, wherein when the connection fails, the connection to the target wireless network is attempted using the second type of authentication method. Network identifier acquisition means for acquiring the network identifier specified by a user, which is a network identifier of the target wireless network;
The wireless communication apparatus according to any one of claims 1 to 8, wherein the wireless connection unit attempts to connect to the target wireless network identified by the acquired network identifier. A method of connecting to a target wireless network to be connected, executed by a wireless communication device,
An authentication method acquisition step of acquiring an authentication method used in the target wireless network from a signal output by an external device constituting the target wireless network;
A wireless connection step of connecting the wireless communication device to the target wireless network using the acquired authentication method,
The wireless connection step sequentially selects a plurality of types of encryption methods corresponding to the acquired authentication method, and attempts to connect to the target wireless network using the sequentially selected types of encryption methods. A connection method characterized by. A method of connecting to a target wireless network to be connected, executed by a wireless communication device,
An encryption method acquisition step of acquiring an encryption method used in the target wireless network from a signal output by an external device constituting the target wireless network;
A wireless connection step of connecting the wireless communication device to the target wireless network using the acquired encryption method, and
The wireless connection step sequentially selects a plurality of types of authentication methods corresponding to the acquired encryption method, and attempts to connect to the target wireless network using the sequentially selected types of authentication methods. A characteristic connection method. A computer-readable program for causing a wireless communication device to connect to a target wireless network to be connected,
The wireless communication device;
Authentication method acquisition means for acquiring an authentication method used in the target wireless network from a signal output by an external device constituting the target wireless network;
Using the acquired authentication method, function as a wireless connection means for connecting the wireless communication device to the target wireless network,
The wireless connection means sequentially selects a plurality of types of encryption methods corresponding to the acquired authentication method, and uses the sequentially selected types of encryption methods to try to connect to the target wireless network. The program characterized by including. A computer-readable program for causing a wireless communication device to connect to a target wireless network to be connected,
The wireless communication device;
An encryption method acquisition means for acquiring an encryption method used in the target wireless network from a signal output by an external device constituting the target wireless network;
Using the acquired encryption method, function as a wireless connection means for connecting the wireless communication device to the target wireless network,
The wireless connection means sequentially selects a plurality of types of authentication methods corresponding to the acquired encryption method, and uses the sequentially selected types of authentication methods to try to connect to the target wireless network. A program characterized by including.