Abstract:
A communication device may have multiple units for communicating through multiple channels. The communication device may also include a display for displaying various screens. The communication device may display a function settings screen for selecting a communication unit to be used for communication with an external device. The communication device may determine whether an external device is already specified. The communication device may also display a device search screen identifying one or more external devices that can communicate with a particular communication unit of the communication device. Further, the communication device may display an updated function settings screen that indicates which communication unit is set to be used for communication with an external device and that identifies which external device is to receive communications from such communication unit.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims priority from Japanese Patent Application No. 2012-261753, filed on Nov. 29, 2012, which is incorporated herein by reference in its entirety. 
       FIELD OF DISCLOSURE 
       [0002]    Aspects described herein relate to selecting a communication system, and a computer-readable storage medium storing a communication support program and a communication device for selecting a communication system. 
       BACKGROUND 
       [0003]    There has been known a mobile telephone device that is allowed to perform communication with an external device via the Bluetooth® system (Bluetooth® is a registered trademark owned by BLUETOOTH SIG. INC. of Kirkland, Wash.) and/or a wireless local area network (“LAN”), selectively. 
       BRIEF SUMMARY 
       [0004]    When a device is configured to communicate using a plurality of communication channels, in order to perform communication between the device and an external device, a user may be required to perform an input operation on the device to select a communication channel and another input operation to specify a communication target device with which to exchange communications using the selected communication channel. Some users may find such input operations bothersome. 
         [0005]    Aspects described herein provide a computer-readable storage medium storing a communication support program and a communication device that may facilitate an input operation required to perform communication with an external device. 
         [0006]    According to an exemplary embodiment of the disclosure, a non-transitory computer-readable storage medium stores computer-readable instructions that may be executed by a communication device comprising a first communication unit, a second communication unit, and a display unit. When executed, the computer-readable instructions may instruct the communication device to: display, on the display unit, a function settings screen (e.g., a print settings screen) comprising a first option (e.g., a radio button, check box, or other field) for selecting the first communication unit and a second option for selecting the second communication unit; determine whether an external device configured to communicate with the first communication unit (e.g., a WiFi unit or Bluetooth unit) is specified; display, on the display unit, a device search screen identifying one or more external devices configured to communicate using the first communication unit; and display, on the display unit, an updated function settings screen indicating that the first communication unit is set to be used for communication with the external device in response to determining that the external device is specified. 
         [0007]    According to another embodiment of the disclosure, a non-transitory computer-readable storage medium stores computer-readable instructions therein that may be executed by a communication device. The communication device may include a first communication unit, a second communication unit, and a display unit. When executed, the computer-readable instructions may instruct the communication device to: display, on the display unit, a device search screen identifying one or more external devices configured to communicate using the first communication unit; determine that a particular external device from among the one or more external devices displayed on the device search screen is selected; determine whether the communication device is set to use the second communication unit for communication with the particular external device in response to determining that the particular external device is selected; and set the communication device to use the first communication unit for communicating with the particular external device in response to determining that the communication device is set to use the second communication unit. 
         [0008]    According to another embodiment of the disclosure, a communication device comprises a first communication unit configured to communicate using a first protocol (e.g., WiFi, Bluetooth, etc.); a second communication unit configured to communicate using a second protocol (e.g., WiFi, Bluetooth, etc.); a display unit; at least one processor; and a memory storing computer-readable instructions therein. When the computer-readable instructions are executed by the at least one processor, they may instruct the communication device (e.g., a smartphone, tablet, etc.) to: display, on the display unit, a function settings screen comprising a first option for selecting the first communication unit and a second option for selecting the second communication unit; determine whether an external device configured to communicate with the first communication unit is specified when the first option is selected on the function settings screen; and display, on the display unit, an updated function settings screen indicating that the first communication unit is set to be used for communication with the external device in response to determining that the external device is specified. 
         [0009]    According to another embodiment, the disclosure provides a communication device comprising a first communication unit; a second communication unit; a display unit; at least one processor; and a memory storing computer-readable instructions therein. When the computer-readable instructions are executed by the at least one processor, they may instruct the communication device to: display, on the display unit, a device search screen identifying one or more external devices configured to communicate using the first communication unit; determine that a particular external device from among the one or more external devices displayed on the device search screen is selected; determine whether the communication device is set to use the second communication unit for communication with the particular external device in response to determining that the particular external device is selected; and set the communication device to use the first communication unit for communicating with the particular external device in response to determining that the communication device is set to use the second communication unit. 
         [0010]    This summary is not intended to identify critical or essential features of the disclosure, but instead merely summarizes certain features and variations thereof. Other details and features will also be described in the sections that follow. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0011]    Aspects of the disclosure are illustrated by way of example and not by limitation in the accompanying figures in which like reference characters indicate similar elements. 
           [0012]      FIG. 1  is a diagram depicting a system configuration in a first illustrative embodiment according to one or more aspects of the disclosure. 
           [0013]      FIG. 2  illustrates a display screen displayed on a display in the first illustrative embodiment according to one or more aspects of the disclosure. 
           [0014]      FIG. 3  is a flowchart depicting an example Wi-Fi® communication support process in the first illustrative embodiment according to one or more aspects of the disclosure. 
           [0015]      FIGS. 4A ,  4 B,  4 C,  4 D, and  4 E are state diagrams depicting a transition of states of the display screen in response to a selection when a printer has not yet been specified in the first illustrative embodiment according to one or more aspects of the disclosure. 
           [0016]      FIGS. 5A ,  5 B,  5 C,  5 D, and  5 E are state diagrams depicting a transition of states of the display screen in response to another selection when a printer has not yet been specified in the first illustrative embodiment according to one or more aspects of the disclosure. 
           [0017]      FIG. 6  is a flowchart depicting an example Wi-Fi® specifying process in the first illustrative embodiment according to one or more aspects of the disclosure. 
           [0018]      FIGS. 7A ,  7 B,  7 C,  7 D, and  7 E are state diagrams depicting a transition of states of the display screen in response to selection of a printer selection field in the first illustrative embodiment according to one or more aspects of the disclosure. 
           [0019]      FIG. 8  is a flowchart depicting an example Bluetooth® communication support process in the first illustrative embodiment according to one or more aspects of the disclosure. 
           [0020]      FIGS. 9A ,  9 B,  9 C, and  9 D are state diagrams depicting a transition of states of the display screen in response to a selection when a printer has not yet been specified in the first illustrative embodiment according to one or more aspects of the disclosure. 
           [0021]      FIGS. 10A ,  10 B,  10 C, and  10 D are state diagrams depicting a transition of states of the display screen in response to a selection when a printer has not yet been specified in the first illustrative embodiment according to one or more aspects of the disclosure. 
           [0022]      FIG. 11  is a flowchart depicting an example Bluetooth® specifying process in the first illustrative embodiment according to one or more aspects of the disclosure. 
           [0023]      FIGS. 12A ,  12 B,  12 C, and  12 D are state diagrams depicting a transition of states of the display screen in response to a selection of the printer selection field in the first illustrative embodiment according to one or more aspects of the disclosure. 
           [0024]      FIG. 13  is a flowchart depicting an example Wi-Fi® communication support process in a second illustrative embodiment according to one or more aspects of the disclosure. 
       
    
    
     DETAILED DESCRIPTION 
       [0025]    For a more complete understanding of the present disclosure, needs satisfied thereby, and the objects, features, and advantages thereof, reference is now made to the following descriptions taken in connection with the accompanying drawings. 
       First Illustrative Embodiment 
       [0026]    Hereinafter, a first illustrative embodiment according to the disclosure is described with reference to the accompanying drawings. 
         [0027]      FIG. 1  depicts a configuration of a mobile telephone device  10  as a communication device according to the first illustrative embodiment. In the mobile telephone device  10 , a central processing unit (“CPU”)  14 , a memory  16 , a Wi-Fi® communication device  18 , a Bluetooth® communication device  18 , and a user interface  22  may be connected with each other via an input and output port  12  (e.g., a data bus) and may be allowed to perform communication with each other. The CPU  14  may be configured to execute a program stored in the memory  16  that may be a nonvolatile memory. The memory  16  may store various setting values used in communication via the Wi-Fi® communication device  18  or in communication via the Bluetooth® communication device  18  as well as an operating system (“OS”) and various programs. The Wi-Fi® communication device  18  may be an interface for performing wireless communication in compliance with a Wireless Fidelity (“Wi-Fi®”) standard (Wi-Fi® is a registered certification mark owned by the Wi-Fi Alliance of Austin, Tex.). Hereinafter, wireless communication performed in compliance with the Wi-Fi® standard may be referred to as “communication using the Wi-Fi® system” or “Wi-Fi® communication”. The Bluetooth® communication device  18  may be an interface for performing wireless communication in compliance with a Bluetooth® standard. Hereinafter, wireless communication performed in compliance with the Bluetooth® standard may be referred to as “communication using the Bluetooth® system” or “Bluetooth® communication”. The mobile telephone device  10  may comprise, as the user interface  22 , a liquid crystal display (“LCD”)  22   b  and a touch panel (“TP”)  22   a  for accepting a user&#39;s input. In the illustrative embodiment, the user interface  22  may be configured with the LCD  22   b  and the touch panel  22   a  placed on top of the LCD  22   b . The touch panel  22   a  may be configured to detect a contact or proximity of an instruction device, for example, a finger or a stylus, to the touch panel  22   a.    
         [0028]    Communication using the Wi-Fi® system and communication using the Bluetooth® system may be available for the mobile telephone device  10  to perform communication with an external device, for example, a printer. That is, the mobile telephone device  10  may be allowed to perform communication with a plurality of external printers (not depicted). Each of the plurality of external printers may be allowed to perform communication using at least one of the Wi-Fi® system and the Bluetooth® system. As such, each of the plurality of external printers may perform communication with the mobile telephone device  10  via at least one of the Wi-Fi® system and the Bluetooth® system. 
         [0029]    In an illustrative embodiment, a communication support program, a type of application program, may be stored in the memory  16  to facilitate input operations to the touch panel  22   a  when a communication method is selected from the Wi-Fi® system and the Bluetooth® system and when a printer targeted for communication using the selected communication method is selected. In an illustrative embodiment, there may be at least two communication channels, for example, a communication channel for accessing a printer via communication using the Wi-Fi® system and a communication channel for accessing a printer via communication using the Bluetooth® system. Selecting Wi-Fi® communication may include selecting the communication channel for accessing a printer via communication using the Wi-Fi® system, and selecting Bluetooth® communication may include selecting the communication channel for accessing a printer via communication using the Bluetooth® system. 
         [0030]      FIG. 2  illustrates an example of display screens displayed on the LCD  22   b , particularly, an example selection screen for selecting a communication channel for communication with a printer using the Wi-Fi® system and communication with a printer using the Bluetooth® system. In a title display field  34 , for example, “Print Settings” may be indicated as a title of the selection screen (or function settings screen). In the illustrative embodiment, a field corresponding to communication using the Wi-Fi® system (e.g., a selection support field  30 ), and a field corresponding to communication using the Bluetooth® system (e.g., a selection support field  32 ) may be listed. Each of the selection support fields  30  and  32  may comprise a printer selection field PA for selecting a printer and a radio button RA for selecting a communication channel. The selection screen depicted in  FIG. 2  may be displayed by the execution of the communication support program stored in the memory  16  by the CPU  14 . 
         [0031]    The printer selection field PA in the selection support field  30  may be a field in which an operation for selecting a printer to be used for communication with the mobile telephone device  10  via Wi-Fi® communication (hereinafter, referred to as a “Wi-Fi® printer”) may be allowed to be performed. The printer selection field PA in the selection support field  32  may be a field in which an operation for selecting a printer to be used for communication with the mobile telephone device  10  via Bluetooth® communication (hereinafter, referred to as a “Bluetooth® printer”) may be allowed to be performed. 
         [0032]    The radio button RA in the selection support field  30  may be a field for specifying the Wi-Fi® system as a channel to be used for communication with an external device. The radio button RA in the selection support field  32  may be a field for specifying the Bluetooth® system as a channel to be used for communication with an external device. The radio button RA selected as the channel to be used for communication may be indicated in a manner different from the other radio button RA that might not be selected as the channel to be used for communication. For example, the radio buttons RA may be indicated in respective different colors. Such an indication may be adopted to visually display which one of the channels has been specified as the channel to be used for communication. In  FIG. 2 , for example, the Wi-Fi® system has been specified as the channel to be used for communication. 
         [0033]    In the illustrative embodiment, one of the Wi-Fi® system and the Bluetooth® system may always be specified as the channel to be used for communication. Therefore, an indication representing that the channel has been specified as the channel to be used for communication may always be given in one of the radio buttons RA in the selection support fields  30  and  32 . For example, as the communication support program is installed on the mobile telephone device  10 , the Wi-Fi® system may be specified as the channel to be used for communication for an initial setting. 
         [0034]    Each set of the printer selection field PA and the radio button RA depicted in  FIG. 2  may correspond to an appropriate one of the selection support fields  30  and  32 . For example, the selection support fields  30  and  32  may include the respective printer selection fields PA and then the radio buttons RA may be embedded into the selection support fields  30  and  32 , respectively. The radio buttons RA may be an element having a rectangular shape. When a user selects (e.g., touches) an area within the four corners of the radio button RA and the selection (e.g., touch) is detected, the corresponding radio button RA may be selected. In some embodiments, a user may effectively select a radio button RA by selecting any portion of the corresponding selection support field  30 ,  32 . For example, selecting any portion of the selection support field  30  may be detected as a selection of the radio button RA within that selection support field  30 . Further, in some embodiments, it might not be necessary to correspond the selection support fields  30  and  32  to the respective printer selection fields PA and embed the radio buttons RA into the selection support fields  30  and  32 , respectively. 
         [0035]    Each of the printer selection fields PA may comprise a field for displaying a name of a printer selected as a communication target in a lower portion thereof. When a printer as a communication target has not yet been specified, an indication representing that a communication-target printer has not yet been specified may be displayed in this field. In  FIG. 2 , for example, an indication when any of a communication-target printer for Wi-Fi® communication (hereinafter, referred to as a “Wi-Fi® printer”) and a communication-target printer for Bluetooth® communication (hereinafter, referred to as a “Bluetooth® printer”) has been specified may be displayed. Alternatively, for example, a message stating “No Device selected” may be displayed as the indication representing that a communication-target printer has not yet been specified. 
         [0036]    Hereinafter, a function with which to facilitate a process for specifying a communication channel for communication with a printer by an input operation to the touch panel  22   a , using the communication support program, is described. 
         [0037]      FIG. 3  depicts a procedure of a Wi-Fi® communication support process according to an illustrative embodiment. The Wi-Fi® communication support process may be implemented by a communication support program stored in the memory  16 , which may be repeatedly performed by the CPU  14 , for example, at predetermined intervals. 
         [0038]    In step S 10 , the CPU  14  may determine whether an input to the radio button RA in the selection support field  30  corresponding to Wi-Fi® communication has been detected. The input to the radio button RA may be performed by a user&#39;s input operation, for example, a touch to the radio button RA. When a positive determination is made in step S 10  (YES at S 10 ), in step S 12 , the CPU  14  may determine whether a Wi-Fi® printer to be used for communication with the mobile telephone device  10  has already been specified. When a negative determination is made in step S 12  (NO at S 12 ), in step S 14 , the CPU  14  may determine whether a communication function using the Wi-Fi® system (hereinafter, also referred to as a “Wi-Fi® communication function”) is enabled. For example, when the power of the Wi-Fi® communication device  18  is on or when the Wi-Fi® communication device  18  has been recognized by the OS as a communication device to be used, the Wi-Fi® communication function is enabled. When a negative determination is made in step S 14 , in step S 16 , the CPU  14  may display, on the LCD  22   b , a Wi-Fi® specifying screen for enabling the Wi-Fi® communication function. This situation may be illustrated in  FIGS. 4A and 4D , for example. That is, when the Wi-Fi® communication function is disabled at the time of the selection of the radio button RA in the selection support field  30  corresponding to Wi-Fi® communication as depicted in  FIG. 4A , the screen may be switched to the Wi-Fi® specifying screen (or communication unit enablement screen) depicted in  FIG. 4D  to prompt the user to enable the Wi-Fi® communication function. In response to this, the user may operate the touch panel  22   a  in accordance with guidance displayed on the Wi-Fi® specifying screen to enable the Wi-Fi® communication function (see  FIG. 4E ). In  FIG. 4E , a field of an execution button to which an input operation for instructing the performance of communication using the Wi-Fi® system may be performed may be displayed on the LCD  22   b , for example. 
         [0039]    As depicted in  FIG. 3 , after the CPU  14  displays the Wi-Fi® specifying screen, the CPU  14  may wait until the Wi-Fi® communication function becomes enabled by the user&#39;s operation for instructing the performance of communication using the Wi-Fi® system (e.g., step S 18 ). Then, when a positive determination is made in step S 18  after the Wi-Fi® communication function becomes enabled by the user&#39;s operation or when a positive determination is made in step S 14 , the routine may proceed to step S 20 . 
         [0040]    In step S 20 , the CPU  14  may display a Wi-Fi® printer search screen. That is, as depicted in  FIG. 4B , the CPU  14  may display, on the LCD  22   b , a screen on which one or more communicable Wi-Fi® printers may be listed as one or more candidates for a communication party device for Wi-Fi® communication. The Wi-Fi® printer search screen may be displayed through the switching of the screen from the screen depicted in  FIG. 4A . Therefore, another title, for example, “Wi-Fi® printer”, may be displayed in the title display field  34  to indicate that the Wi-Fi® printer search screen may be another screen. In response to this, when the user performs an input operation for selecting a specific Wi-Fi® printer, the CPU  14  may determine that a printer has been selected in processing of step S 22  in  FIG. 3  and the routine may proceed to step S 24 . In step S 24 , the CPU  14  may specify the selected printer as the communication party device for Wi-Fi® communication and display an updated function settings screen (e.g., the “Print Settings” screen) as depicted in  FIG. 4C . 
         [0041]      FIG. 4A  illustrates a situation in which any printer has not been specified first. Therefore, the indication representing that a Wi-Fi® printer has not been specified yet, for example, a message “No Device selected”, may be displayed in the selection support field  30 . In  FIG. 4C , the name of the specified Wi-Fi® printer (e.g., “Wi-Fi P-2”) may be displayed. 
         [0042]    When the processing of step S 24  in  FIG. 3  has been completed or when a positive determination is made in step S 12 , the routine may proceed to step S 26 . In step S 26 , the CPU  14  may determine whether the Wi-Fi® system has been specified as the communication channel for communication with the printer at the time the positive determination is made in step S 10 , and more specifically, immediately before the radio button RA in the selection support field  30  corresponding to communication using the Wi-Fi® system is selected. When a negative determination is made in step S 26 , in step S 28 , the CPU  14  may switch the channel to be used for communication with the printer to the communication channel via Wi-Fi® communication and specify the communication channel via Wi-Fi® communication as the channel to be used for communication. When the channel to be used for communication is switched to use Wi-Fi® communication, an indication that the communication channel to be used for communication with the printer is the Wi-Fi® system may be stored in the memory  16 . Thereafter, when an operation for performing communication with the printer is again performed after communication is performed with the printer and the communication session has ended, the Wi-Fi® system may be specified as the communication channel to be used for communication with the printer, as the initial setting. 
         [0043]      FIGS. 5A to 5E  illustrate a situation that occurs when a negative determination is made in step S 26 . That is, even when the Bluetooth® system has been specified as the communication channel to be used first as apparent from the indication of the radio button RA in the selection support field  32  corresponding to communication using the Bluetooth® system in  FIG. 5A , the communication channel to be used may be switched to the Wi-Fi® system (see  FIG. 5C ) by the specification of the Wi-Fi® printer (see  FIG. 5B ). For example, when the Wi-Fi® system has been specified as the communication channel as depicted in  FIG. 4A , the Wi-Fi® system may be continuously selected as the communication channel after the Wi-Fi® printer is selected. Therefore, the processing of switching the communication channel might not be performed. 
         [0044]    When the processing of step S 28  has been completed, when a negative determination is made in step S 10 , or when a positive determination is made in step S 26 , the CPU  14  may end an instance of the Wi-Fi® communication support process. 
         [0045]      FIG. 6  illustrates a procedure of a Wi-Fi® specifying process according to an illustrative embodiment. The Wi-Fi® specifying process may be implemented by a communication support program stored in the memory  16 , which may be repeatedly performed by the CPU  14 , for example, at predetermined intervals. The Wi-Fi® specifying process depicted in  FIG. 6  may be performed concurrently with the Wi-Fi® communication support process depicted in  FIG. 3 . 
         [0046]    First, in step S 30 , the CPU  14  may determine whether an input to the printer selection field PA in the selection support field  30  corresponding to communication using the Wi-Fi® system has been detected. The input to the printer selection field PA may be implemented by a user&#39;s input operation, for example, a touch to the printer selection field PA. When a positive determination is made in step S 30 , the CPU  14  may perform processing of steps S 32  to S 42  similar to the processing of steps S 14  to S 24  in  FIG. 3 . Then, when the processing of step S 42  has been completed, the CPU  14  may perform processing of step S 46  or processing of steps S 46  and S 48  similar to the processing of steps S 26  and S 28  in  FIG. 3 . 
         [0047]      FIGS. 7A to 7E  illustrate a situation that occurs when a negative determination is made in step S 46 . That is, even when the Bluetooth® system has been specified as the communication channel to be used first as apparent from the indication of the radio button RA in the selection support field  32  corresponding to communication using the Bluetooth® system in  FIG. 7A , the communication channel to be used may be switched to the Wi-Fi® system (see  FIG. 7C ) by the specification of the Wi-Fi® printer (see  FIG. 7B ). 
         [0048]      FIG. 8  illustrates a procedure of a Bluetooth® communication support process according to an illustrative embodiment. The Bluetooth® communication support process may be implemented by a communication support program stored in the memory  16 , which may be repeatedly performed by the CPU  14 , for example, at predetermined intervals. The Bluetooth® communication support process depicted in  FIG. 8  may be performed concurrently with the Wi-Fi® communication support process depicted in  FIG. 3  and the Wi-Fi® specifying process in depicted  FIG. 6 . 
         [0049]    First, in step S 50 , the CPU  14  may determine whether an input to the radio button RA in the selection support field  32  corresponding to communication using the Bluetooth® system has been detected. When a positive determination is made in step S 50 , in step S 52 , the CPU  14  may determine whether a Bluetooth® printer to be used for communication with the mobile telephone device  10  has already been specified. When a negative determination is made in step S 52 , in step S 54 , the CPU  14  may determine whether a communication function using the Bluetooth® system (hereinafter, referred to as a “Bluetooth® communication function”) is enabled. When a negative determination is made in step S 54 , the CPU  14  may display a Bluetooth® specifying screen on the LCD  22   b  in step S 56 . This situation may be illustrated in  FIGS. 9A and 9D , for example. That is, as depicted in  FIG. 9A , when a Bluetooth® connection is not established at the time of the selection of the radio button RA in the selection support field  32  corresponding to Bluetooth® communication, the screen may be switched to the Bluetooth® specifying screen depicted in  FIG. 9D  to prompt the user to enable the Bluetooth® communication function. In response to this, the user may operate the touch panel  22   a  in accordance with guidance displayed on Bluetooth® specifying screen to enable the communication function using the Bluetooth® system. 
         [0050]    As the CPU  14  displays the Bluetooth® specifying screen, as depicted in  FIG. 8 , the CPU  14  may wait until the communication function using the Bluetooth® system becomes enabled by the user&#39;s operation for instructing the performance of communication using the Bluetooth® system (e.g., step S 58 ). Then, when a positive determination is made in step S 58  after the communication function using the Bluetooth® system becomes enabled by the user&#39;s operation or when a positive determination is made in step S 54 , the routine may proceed to step S 60 . 
         [0051]    In step S 60 , the CPU  14  may display a Bluetooth® printer search screen. That is, as depicted in  FIG. 9B , the CPU  14  may display, on the LCD  22   b , a screen on which one or more communicable Bluetooth® printers may be listed as one or more candidates for a communication party device for Bluetooth® communication. For the Bluetooth® case, one or more printers that may be paired with the mobile telephone device  10  and registered by the OS may be listed. Therefore, in actual, one or more incommunicable printers may also be displayed. In preparation for a case where it may be desired to specify another Bluetooth® printer that may be different from the one or more listed Bluetooth® printers, a link to another screen for adding a new Bluetooth® printer may be preferably provided on the Bluetooth® printer search screen. 
         [0052]    When the user performs an input operation for selecting a specific Bluetooth® printer, the CPU  14  may determine that a printer has been selected in processing of step S 62  in  FIG. 8  and the routine may proceed to step S 64 . In step S 64 , the CPU  14  may specify the selected printer as the communication party device for Bluetooth® communication and display the “Print settings” screen as depicted in  FIG. 9C . 
         [0053]      FIG. 9A  illustrates a situation in which any printer has not been specified first. Therefore, for example, the indication representing that a Bluetooth® printer has not been specified yet, for example, a message “No Device selected”, may be displayed in the selection support field  32 . In  FIG. 9C , the name of the specified Bluetooth® printer (e.g., “Bu P-1”) may be displayed. 
         [0054]    When the processing of step S 64  in  FIG. 8  has been completed or when a positive determination is made in step S 52 , the routine may proceed to step S 66 . In step S 66 , the CPU  14  may determine whether the Bluetooth® system has been specified as the communication channel for communication with the printer at the time the positive determination is made in step S 50 , and more specifically, immediately before the radio button RA in the selection support field  32  corresponding to communication using the Bluetooth® system is selected. When a negative determination is made in step S 66 , in step S 68 , the CPU  14  may switch the channel to be used for communication with the printer to the communication channel via Bluetooth® communication and specify the communication channel via Bluetooth® communication as the channel to be used for communication. When the channel to be used for communication is switched to use Bluetooth® communication, an indication that the communication channel to be used for communication with the printer is the Bluetooth® system may be stored in the memory  16 . Thereafter, when an operation for performing communication with the printer is again performed after communication is performed with the printer and the communication session has ended, the Bluetooth® system may be specified as the communication channel to be used for communication with the printer, as the initial setting. 
         [0055]      FIGS. 10A to 10D  illustrate a situation that occurs when a negative determination is made in step S 66 . That is, even when the Wi-Fi® system has been specified as the communication channel to be used first as apparent from the indication of the radio button RA in the selection support field  30  corresponding to communication using the Wi-Fi® system in  FIG. 10A , the communication channel to be used may be switched to the Bluetooth® system (see  FIG. 10C ) by the specification of the Bluetooth® printer (see  FIG. 10B ). For example, when the Bluetooth® system has been specified as the communication channel as depicted in  FIG. 9A , the Bluetooth® system may be continuously selected as the communication channel after the Bluetooth® printer is selected. Therefore, the processing of switching the communication channel might not be performed. 
         [0056]    When the processing of step S 68  has been completed, when a negative determination is made in step S 50 , or when a positive determination is made in step S 66 , the CPU  14  may end an instance of the Bluetooth® communication support process. 
         [0057]      FIG. 11  illustrates a procedure of a Bluetooth® specifying process according to an illustrative embodiment. The Bluetooth® specifying process may be implemented by a communication support program stored in the memory  16 , which may be repeatedly performed by the CPU  14 , for example, at predetermined intervals. The Bluetooth® specifying process depicted in  FIG. 11  may be performed concurrently with the Wi-Fi® communication support process depicted in  FIG. 3 , the Wi-Fi® specifying process depicted in  FIG. 6 , and the Bluetooth® communication support process depicted in  FIG. 8 . 
         [0058]    First, in step S 70 , the CPU  14  may determine whether an input to the printer selection field PA in the selection support field  32  corresponding to communication using the Bluetooth® system has been detected. The input to the printer selection field PA may be implemented by a user&#39;s input operation, for example, a touch to the printer selection field PA. When a positive determination is made in step S 70 , the CPU  14  may perform processing of steps S 72  to S 82  similar to the processing of steps S 54  to S 64  in  FIG. 8 . Then, when the processing of step S 82  has been completed, the CPU  14  may perform processing of step S 84  or processing of S 84  and S 86  similar to the processing of steps S 66  and S 68  in  FIG. 8 . 
         [0059]      FIGS. 12A to 12D  illustrate a situation that occurs when a negative determination is made in step S 84 . That is, even when the Wi-Fi® system has been specified as the communication channel to be used first as apparent from the indication of the radio button RA in the selection support field  30  corresponding to communication using the Wi-Fi® system in  FIG. 12A , the communication channel to be used may be switched to the Bluetooth® system (see  FIG. 12C ) by the specification of the Bluetooth® printer (see  FIG. 12B ). 
         [0060]    According to the above-described illustrative embodiment, the following effects may be obtained. 
         [0061]    At the time of the input operation to one of the radio buttons RA, when a printer has not been specified as the communication target to be used for communication using the communication channel (e.g., the Wi-Fi® system or the Bluetooth® system) corresponding to the radio button RA selected by the input operation, the screen may be switched to the printer search screen on which the specification of a printer may be available (see  FIGS. 4B ,  5 B,  7 B,  9 B, and  10 B). Therefore, this configuration may facilitate the user&#39;s input operation. 
         [0062]    The user interface  22  may be configured with the LCD  22   b  and the touch panel  22   a  placed over the LCD  22   b . This configuration may implement the user-friendly display such that the user may readily find a field on which a desired operation may be performed. This configuration may also have an advantage that, on the LCD  22   b , the locations for displaying the selection support fields  30  and  32 , respectively, may also be used as the locations for displaying the printers on the printer search screen. 
         [0063]    Each of the selection support fields  30  and  32  may comprise the printer selection field PA for selecting a printer and the radio button RA for selecting a communication channel. With this configuration, the user may readily perform the selection of a printer and the selection of a communication channel. 
         [0064]    For the printer specification on the printer search screen, when the communication channel corresponding to the specified printer has not been specified as the channel to be used for communication, the currently-specified communication channel may be switched to the newly-specified communication channel. Therefore, this configuration may facilitate the user&#39;s input operation. 
         [0065]    At the time of the selection of a communication channel for which a printer to be used has not been specified, when the communication function using the selected communication channel is disenabled, the screen for enabling the communication function may be displayed to prompt the user to enable the communication function. As the communication function becomes enabled, the screen may be switched to the printer search screen. This configuration may provide a user-friendly process to assist the user in enabling a previously disabled communication channel that the user desires to use for printing. The user may enable a communication channel without closing the communication support program used for selecting print settings. 
         [0066]    One of the Wi-Fi® system and the Bluetooth® system may always be specified as the communication channel to be used for communication with the printer. In addition, even when the channel that has not been specified as the communication channel to be used first is selected by the input operation to one of the printer selection fields PA, the screen may be switched to the printer search screen directly. This configuration may also facilitate the user&#39;s input operation. 
         [0067]    The radio buttons RA may have different appearances depending on whether which one of the Wi-Fi® system or the Bluetooth® system has been selected as the communication channel to be used for communication with the printer. For example, the radio buttons RA may be partially (or completely) filled to indicate that a corresponding communication channel is selected. With this configuration, the user may readily confirm the specified communication channel. 
         [0068]    The name of the specified printer may be displayed in the printer selection field PA. Thus, the user may readily confirm the specified printer. 
         [0069]    When the printer has not been specified, the indication representing that the printer has not been specified may be displayed in the printer selection field PA. Thus, when the printer is not specified, the user may readily confirm the facts that the printer has not been specified. 
       Second Illustrative Embodiment 
       [0070]    Hereinafter, a second illustrative embodiment is described with reference to the accompanying drawings, mainly focusing on different parts from the first illustrative embodiment. 
         [0071]      FIG. 13  illustrates a procedure of a Wi-Fi® communication support process according to the second illustrative embodiment. The Wi-Fi® communication support process may be implemented by which the communication support program stored in the memory  16  may be repeatedly performed by the CPU  14 , for example, at predetermined periods. For the sake of convenience, the same step numbers are assigned in  FIG. 13  to the steps that correspond to the steps in  FIG. 3 . 
         [0072]    In step S 10   a , the CPU  14  may determine whether an input to the selection support field  30  corresponding to communication using the Wi-Fi® system has been detected. When a positive determination is made in step S 10   a , the routine may proceed to step S 12 . When a positive determination is made in step S 12 , in step S 19 , the CPU  14  may determine whether an input to the radio button RA corresponding to communication using the Wi-Fi® system has been detected in step S 10   a . When a positive determination is made in step S 19 , the routine may proceed to step S 26 . When a negative determination is made in step S 19 , the routine may proceed to step S 14 . 
         [0073]    The above described process according to the second illustrative embodiment may also offer similar user usability of the touch panel  22   a  to the user usability when the processes depicted in  FIG. 3  and  FIG. 6  are performed. 
         [0074]    The Bluetooth® communication support process may also be performed in a similar manner to the Wi-Fi® communication support process depicted in  FIG. 13 . Accordingly, a description of the Bluetooth® communication support process is omitted. 
       Other Embodiments 
       [0075]    While the disclosure has been described in detail with reference to the specific embodiments thereof, they are merely examples, and various changes, arrangements, and modifications may be applied therein without departing from the spirit and scope of the disclosure. Variations of the illustrative embodiments are enumerated below. 
         [0076]    In the above-described illustrative embodiments, one of the radio button RA corresponding to communication using the Wi-Fi® system and the radio button RA corresponding to communication using the Bluetooth® system may always be selected. However, in other embodiments, for example, no channel may be specified in an initial state because there is no memory of the previous printer specification. In this case, for example, the radio buttons RA of the respective communication channels may have the same status (e.g., either both are selected or both are unselected). 
         [0077]    In the above-described illustrative embodiments, once the settings are specified, the settings may be stored and maintained unless the stored settings are changed. However, in other embodiments, for example, when an amount of energy stored in the mobile telephone device  10  becomes a predetermined amount or less, the specified information may be erased. In this case, it may be unnecessary to store the specification information in the memory (e.g., the nonvolatile memory) that may hold data regardless of the presence or absence of power supply, for example, a flash memory. With this configuration, the storage area of the nonvolatile memory may be reduced. 
         [0078]    The shape of the selection support fields  30  and  32  might not be limited to the rectangular shape. In other embodiments, for example, the selection support fields  30  and  32  may have a circular shape. In this case, in each of the selection support fields  30  and  32 , a printer selection field (as an example of a device selection field) may be assigned to one semicircle of the circular field and a radio button (as an example of communication channel selection field) may be assigned to the other semicircle of the circular field. 
         [0079]    In the above-described illustrative embodiments, a selected radio button may appear different from an unselected radio button. However, in other embodiments, for example, the backgrounds (either completely or partially) of the selection support fields  30  and  32  may have different colors. 
         [0080]    In the above-described illustrative embodiments, the Bluetooth® system and the Wi-Fi® system may be taken as examples of the channels to be used for communication with the printer. However, in other embodiments, for example, a communication channel via infrared rays, a communication channel via a universal serial bus (“USB”), or a communication channel via a wired LAN may be adopted as the channel to be used for communication with the printer. The number of communication channels listed on the LCD  22   b  might not be limited to two. In other embodiments, for example, three or more communication channels may be listed. 
         [0081]    In this case, all selection support fields corresponding to the three or more communication channels, respectively, might not be listed on the display unit to fit the ones that are listed on a single screen. Particularly, when a relatively large number of communication channels are available to be listed and each display field of the selection support fields requires a predetermined size or larger in terms of readability, it might be difficult to list all the selection support fields on the single screen. In this case, the display screen may be allowed to display all the communication channels through a discontinuous change of the display screen from one to another (e.g., the switching of the display screen) or through a continuous change of the display screen at a flick of the touch panel  22   a  to scroll the display screen. 
         [0082]    The method of providing the function of permitting the printer specification on condition that the communication function is enabled in step S 14  or S 18  in  FIG. 3  might not be limited to the specific embodiments. In other embodiments, for example, when a positive determination is made in step S 10 , the CPU  14  may perform appropriate one or more of the processing of steps S 14 , S 16 , and S 18  and then perform the processing of step S 12 . Also, for example, the CPU  14  may perform appropriate one or more of the processing of steps S 14 , S 16 , and S 18  subsequent to the processing of step S 26  in the Wi-Fi communication support process depicted in  FIG. 3 . 
         [0083]    The user interface might not be limited to the user interface configured with the LCD  22   b  and the touch panel  22   a  placed on one another. In other embodiments, for example, a display unit and an input unit may be disposed in different areas. In this case, also, for example, the user interface may comprise the input unit for selecting the printer selection fields PA and the radio buttons RA. When a printer to be used for communication via a communication channel corresponding to an operated radio button has not been specified, the printer search screen may be displayed on the display unit. At that time, the printer specification on the printer search screen may be allowed to be performed on the input unit. 
         [0084]    In some instances, a printer may already be associated with a communication channel so that selection of the printer may automatically specify a channel to be used for communication. For example, after a printer is specified as described above, the communication channel for which the printer has been specified may be specified automatically as the channel to be used for communication. 
         [0085]    In some embodiments, both the printer selection field PA and the communication channel selection field for selecting a communication channel (e.g., the radio button RA) might not be provided. In other embodiments, for example, a common field for selecting a printer regardless of the communication channel may be displayed along with one or more communication channel selection fields for selecting a communication channel for communicating with the printer in the common field. In this case, at the time of an input operation to one of the communication channel selection fields, if a printer to be used has not been specified, a printer selection screen may be displayed to allow a printer to be selected. This configuration may also allow a user to avoid having to perform a separate input operation, and therefore, may also simplify the user&#39;s input operation. 
         [0086]    Again, in some embodiments, both the printer selection field PA and the communication channel selection field for selecting a communication channel (e.g., the radio button RA) might not be provided. In other embodiments, for example, a printer selection field for each communication channel may be provided. In this case, when a printer selection field is selected, a communication channel corresponding to the printer selection field may be specified automatically and a printer selection screen may be displayed to allow the user to select a printer available for use with the automatically specified communication channel. This configuration may also allow a user to avoid having to perform a separate input operation for specifying a communication channel, and thus may also simplify the user&#39;s input operation. When the selected printer selection field already specifies a target printer, the printer selection screen (e.g., as depicted in  FIG. 4B ) may be displayed and the target printer may be selected again (or confirmed). 
         [0087]    In the above-described illustrative embodiments, a printer may be taken as an example of the external device as the communication target. However, the communication-target device might not be limited to the printer. In other embodiments, for example, the communication-target device may be a scanner, a multifunction device, a personal computer, or another mobile telephone device. In short, the communication-target device may be any device that may be allowed to perform communication with the mobile telephone device  10 . 
         [0088]    In the above-described illustrative embodiments, the mobile telephone device  10  may be taken as an example of the communication device. However, the communication device might not be limited to the mobile telephone device  10 . In other embodiments, for example, the communication device may be a tablet terminal not having a telephone function or a personal computer. 
         [0089]    Some or all of the functions of the application program may be performed by special hardware, instead of software.