JP2010041542A - Communication terminal, control method of communication terminal, and program for communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication terminal that is hardly expanded in scale even when a different key is provided further. <P>SOLUTION: The communication terminal includes: a first unit that includes a display on a front face of a case and a first key different from a multi-direction key; and a second unit that is attached to the front face of the first unit so as to freely slide and has a second key different from the first key. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a communication terminal in which different keys are arranged in different units, a method for controlling the communication terminal, and a program for the communication terminal.

  A portable terminal device composed of a plurality of casings is described in Japanese Patent Application Laid-Open No. 2005-130219 (Patent Document 1).

  The portable terminal device described in this publication includes a first housing having an operation key (numerical key), and a second housing that is slidably supported by the first housing and includes a display. Has been. Then, the portable terminal device exposes the operation key by sliding the second casing from the first casing, and makes the operation key usable.

JP-A-2005-130219

  Although the portable terminal device described in Patent Document 1 includes an operation key, there is no description regarding a multidirectional key different from the operation key. Multi-directional keys are widely used in mobile terminal devices, and when this multi-directional key is added to the mobile terminal device, an area to be further arranged is required, and there is a possibility that the casing becomes large.

  An object of the present invention is to solve the above-described problems and to provide a communication terminal that is difficult to increase in size even if different keys are added.

This invention is for solving the said subject, Comprising: The communication terminal of this invention is
A first unit having a display and a first key different from the multi-directional key on the front surface of the housing;
The second unit is slidably attached to the front surface of the first unit, and has a second unit having a second key different from the first key.

The communication terminal control method of the present invention includes:
A position detecting step for detecting a position of a second unit that is slidably attached to the front surface of the first unit having a first key different from the multi-directional key and has a second key different from the first key;
When it is detected in the position detecting step that the second unit has been slid from the first position overlapping the first key to the second position not overlapping, or from the second position to the first position. And a control step for turning on or turning off a predetermined function set in advance.

Furthermore, the communication terminal program of the present invention provides:
A position detection function for slidably attaching to the front surface of the first unit having a first key different from the multi-directional key and detecting the position of the second unit having a second key different from the first key;
When the position detection function detects that the second unit has been slid from the first position overlapping the first key to the second position not overlapping, or from the second position to the first position. When this is detected, the computer realizes a control function for turning on or turning off a predetermined function set in advance.

  According to the present invention configured as described above, it is possible to make it difficult to increase the size of the communication terminal even if a different key is added.

  A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a front view illustrating the communication terminal according to the first embodiment. FIG. 2 is a side view of the communication terminal. FIG. 3 is a front view showing a state where the second unit of the communication terminal is slid upward. FIG. 4 is a side view showing a state where the second unit of the communication terminal is slid upward.

  A communication terminal 100 shown in the figure is a portable communication terminal including a wireless communication unit (not shown). The communication terminal 100 includes a first unit 101 and a second unit 102. A display 104 and a first key 105 are arranged on the front surface of the first unit 101. The first key 105 is, for example, a numeric keypad or an alphabet key, and is a key different from the multidirectional key.

  A second key 107 is disposed on the front surface of the second unit 102. The second key 107 is, for example, a multidirectional key, and can move the cursor and pointer up, down, left, and right.

  In the second unit 102, sliding portions 112 are fitted in the grooves 111 on both sides of the first unit 101. Therefore, the second unit 102 can be slid up and down without detaching from the first unit 101.

  In the communication terminal 100 configured as described above, the second unit 102 is slidably attached to the first unit. As shown in FIG. 3, when the second unit 102 is slid upward, that is, the second key 107 and the first key 105 are lined up and down, these two keys can be input. it can. When the input of both keys is required, there are a case where Japanese input is required, for example, creation of an e-mail, or a case where the first key 105 is exposed to make a call.

  In addition, as shown in FIG. 1, the second unit 102 is slid down, that is, the second key 107 is overlaid on the first key 105, and the second key 102 is used without using the first key 105. There are cases where a specific function can be used by using only the key 107. In this case, for example, when using a camera function, when receiving a television broadcast, when using a browser function when connected to the Internet, or when selecting a partner from a telephone directory for making a call.

  In this communication terminal 100, when only the second key 107 is used, key input can be performed with the second unit 102 slid down, and the second key 107 and the first key 105 can be used. When used, key input can be performed with the second unit 102 slid upward. In this way, the second unit can be slid to use only the second key 107 of the second unit 102 or the second key 107 of the second unit 102 and the first key 105 of the first unit 101. Therefore, the second key 107 can be arranged and used without enlarging the unit.

  Next, 2nd Embodiment is described based on FIG. 5 thru | or FIG.

  FIG. 5 is a front view showing a communication terminal according to the second embodiment. FIG. 6 is a rear view of the communication terminal. FIG. 7 is a side view of the communication terminal. FIG. 8 is a front view showing a state in which the second unit of the communication terminal is slid to the second position. FIG. 9 is a rear view showing a state where the second unit of the communication terminal is slid to the second position. FIG. 10 is a side view showing a state where the second unit of the communication terminal is slid to the second position. This second position is a position where the second unit 702 does not overlap the numeric keypad 705. The first position is a position where the second unit 702 overlaps the numeric keypad 705.

  The communication terminal 700 includes a first unit 701 and a second unit 702. On the front surface of the first unit 701, an earpiece 703 that functions as a receiver, a display 704 that uses a touch panel with an aspect ratio of 9:16, a numeric keypad 705 that is used as a first key, and a microphone are used in order from the top. A transmitter 706 is arranged. Note that the touch panel has both a display function that can display and output information such as images, graphics, characters, and symbols, and a switch function that senses an input operation by a user's touch using a method such as pressure or capacitance. The numeric keypad 705 also includes ten numeric keys “0” to “9”, a key “#”, and a key “*”, and thus includes a total of 12 keys. Further, the numeric keypad 705 is assigned a function so that a Japanese phonetic alphabet or Japanese alphabet can be input, and a display (not shown) serving as a mark for the input is provided.

  A camera lens 711 is disposed on the back surface of the first unit 701, and a speaker unit 712 that operates during alarm sound or music playback is disposed above the lens 711. Furthermore, a side key 713 is disposed on the upper right side of the first unit 701.

  The second unit 702 is provided with a multi-directional key 707 used as a second key and a function key 708 at the front thereof. The multi-directional key 707 includes four direction keys 709 for moving the cursor and pointer in the vertical and horizontal directions, and a determination key 710 at the center for inputting that it is OK or determination. Further, the second unit 702 includes a lens cover 714 formed on the back portion 715 so as to protrude upward.

  When the second unit 702 is slid to the second position, the lens cover 714 covers the lens 711 (see FIG. 9). Further, when the second unit 702 is slid to the second position, the multi-directional key 707 and the function key 708 of the second unit 702 and the numeric key 705 of the first unit 701 are arranged vertically (see FIG. 8).

  Further, when the second unit 702 is slid to the first position, the lens cover 714 is located away from the lens 711 and does not cover the lens 711 (see FIG. 6). When the second unit 702 is slid to the first position, the multi-directional key 707 and the function key 708 of the second unit 702 substantially overlap with the numeric key 705 of the first unit 701 (see FIG. 5). This is because the front surface of the surface on which the numeric keypad 705 is disposed and the surface on which the multidirectional key 707 is disposed are set to have substantially the same shape and area. Further, at this time, the second unit 702 is positioned so as not to overlap the display 704, so that the entire display 704 is exposed. When the second unit 702 is slid to the first position in this way, the second unit 702 does not cover the display 704, and the display 704 can be used to the maximum extent.

  Next, an electrical connection state between the first unit 701 and the second unit 702 will be described. FIG. 11 is an explanatory diagram illustrating a connection state of both units in a state where the second unit is slid to the first position. FIG. 12 is an explanatory diagram showing a connection state of both units in a state where the second unit is slid to the second position. 11 and 12 do not show the configuration (various keys, etc.) other than the display 704.

  As shown in FIG. 11, in the state where the second unit 702 is slid to the first position (down), the first terminal 740 of the first unit 701 and the terminal 742 of the second unit 702 are connected. The input signals of the multidirectional key 707 and the function key 708 can be received by the control unit of the first unit 701 (see FIG. 13). In addition, as shown in FIG. 12, when the second unit 702 is slid (up) to the second position, the second terminal 741 of the first unit 701 and the terminal 742 of the second unit 702 are connected. The input signals of the multidirectional key 707 and the function key 708 can be received by the control unit (see FIG. 13) of the first unit 701.

  The electrical connection between the second unit 702 and the first unit 701 is not limited to the method of using the connection terminals, but may be a method of connecting by wiring. However, the description of this method is omitted.

  FIG. 13 is a functional block diagram showing a communication terminal. As described with reference to FIGS. 5 to 10, the communication terminal 700 includes a receiving unit 703, a transmitting unit 706, a display 704, and a speaker unit 712. Further, the communication terminal 700 includes a wireless communication unit 720, a camera unit 721, an audio processing unit 722, an operation unit 723, a broadcast reception unit 724, a control unit 725, a storage unit 726, and a state detection unit 727. And an acceleration sensor 728 and a slide sensor 729.

  The wireless communication unit 720 is connected to the antenna 730 and performs voice communication and data communication wirelessly. The camera unit 721 includes a lens 711 and a camera component (not shown), and processes a signal of a captured image from the lens 711. The voice processing unit 722 is connected to the receiving unit 703 and the transmitting unit 706, and processes the voice of voice communication. The operation unit 723 includes the above-described function key 708, direction key 709, enter key 710, numeric keypad 705, and side key 713. The broadcast receiving unit 724 is connected to the antenna 731 and receives a television broadcast. The control unit 725 controls the communication terminal 700 as a whole. The control unit 725 includes a CPU (Central Processing Unit) and other semiconductor components. And this control part 725 controls each part according to the control program stored in the memory | storage part 726 mentioned later.

  The storage unit 726 stores images taken by the camera unit 721, other data (phone book information, transmission / reception mail information, incoming / outgoing call information, content information, application program information, control program), and various items of the communication terminal 700. Store settings, etc. The state detection unit 727 is connected to the acceleration sensor 728 and the slide sensor 729. This state detection unit 727 determines whether the communication terminal 700 is tilted, specifically, whether it is in a vertical state (see FIG. 14) or not in a vertical state (horizontal state, see FIG. 15) based on a signal from the acceleration sensor 728. To detect. That is, the state detection unit 727 and the acceleration sensor 728 realize a function of a state detection sensor that detects whether or not the communication terminal is in a vertical state.

  Further, the state detection unit 727 detects whether the second unit 702 has been slid from the first position to the second position or from the second position to the first position based on a signal from the slide sensor 729. To do. In other words, the state detecting unit 727 and the slide sensor 729 detect that the second unit has been slid from the first position to the second position, or detect that the second unit has been slid from the second position to the first position. The detection sensor function is realized.

  Specifically, the slide sensor 729 uses one of a sensor having a magnetic element or a Hall element, a protrusion switch, a push switch, or the like.

  FIG. 14 is an explanatory diagram showing an operation state when the second unit is slid from the second position to the first position in a state where the communication terminal is in a vertical state. FIG. 15 is a side view illustrating an operation state in which the second unit of the communication terminal is slid from the second position to the first position in a state where the communication terminal is set sideways.

  The state detection unit 727 detects from the signal from the slide sensor 729 that the second unit 702 has been slid from the second position to the first position, and further, the acceleration sensor 728 indicates that the communication terminal 700 is vertical. When detected by the signal from, the control unit 725 activates the camera function (see FIG. 14). At this time, the lens 711 is exposed on the rear surface as shown in FIG.

  Further, the state detection unit 727 detects that the second unit 702 has been slid from the second position to the first position based on a signal from the slide sensor 729, and the communication terminal 700 is not in a vertical state (horizontal When the state is detected by a signal from the acceleration sensor 728, the control unit 725 activates the television broadcast reception function (see FIG. 15). Thereby, the user can view the television broadcast.

  The operation of the communication terminal 700 will be described with reference to FIG. FIG. 16 is a flowchart showing the operation of the communication terminal.

  First, in step (hereinafter, “step” is referred to as “S”) 1601, the state detection unit 727 detects whether or not the second unit 702 has been slid from the second position to the first position. If it is not detected that the slider has been slid (NO in S1601), the state detector 727 checks again whether or not the slider has been slid. If it is detected by the state detection unit 727 that the slide has been made (YES in S1601), in S1602, the control unit 725 determines whether there is a setting for activating a specific function for the slide. If there is no setting for starting a certain function (NO in S1602), the control ends.

  If a setting to activate a function is made (YES in S1602), then in S1603, the state detection unit 727 detects whether or not the communication terminal 700 is in a vertical state from the signal of the acceleration sensor 728. To do. When it is detected that the communication terminal 700 is in the vertical state (YES in S1603), the control unit 725 displays a message “Activating the camera function” on the display 704 and notifies the user (FIG. 14). After that, the camera function is activated (S1604). Further, at this time, the control unit 725 assigns the direction key 709, the determination key 710, and the side key 713 to function keys when using the camera function.

  For example, the control unit 725 assigns the enter key 710 as a shutter key, assigns an up / down direction key 709 as a zoom key, and assigns a left / right direction key 709 as a key for setting exposure to plus or minus. Further, the control unit 725 assigns the function key 708, the enter key 710, and the side key 713 as keys for setting the shooting size, setting the shooting scene, setting the self-timer, setting the strobe, and setting the barcode reader to start. You can also.

  If it is detected in S1603 that the communication terminal 700 is not in the vertical state (NO in S1603), the communication terminal 700 is in the horizontal state, and the control unit 725 activates the TV function on the display 704. Is displayed and notified to the user (see FIG. 15), and then the TV broadcast reception function is activated (S1605). Further, at this time, the control unit 725 assigns the direction key 709, the determination key 710, and the side key 713 to function keys when using the television reception function.

  For example, the control unit 725 assigns the up / down direction key 709 to a key for setting the volume level, and assigns the left / right direction key 709 as a key for advancing or returning a channel. In addition, the control unit 725 assigns the function key 708, the determination key 710, and the side key 713 as display size (full display, non-display) setting keys and function keys (capture, caption, image quality adjustment, various settings). You can also.

  When the camera function or the television broadcast receiving function is activated, the control based on the slide detection of the second unit 702 ends.

  In the communication terminal 700 configured as described above, the second unit 702 can be slid to the first position or the second position, and only the multidirectional key 707 or the multidirectional key 707 and the numeric keypad 705 can be used. The multi-directional key 707 can be arranged and used without increasing the size of the unit.

  Further, in this communication terminal 700, since the timing for turning on a specific function is performed when the second unit 702 is slid from the second position to the first position, a function to be activated in advance is set. As a result, one of the desired functions among the many functions can be activated at the slide timing of the second unit 702.

  Whether the communication terminal 700 is in the vertical state or not in the vertical state (horizontal state) is detected by the state detection unit 727 based on a signal from the acceleration sensor 728, and based on the detection result, the control unit 725 Switch the function to be turned on. For this reason, a function suitable for the state of the communication terminal 700 can be automatically turned on. Thereby, the communication terminal 700 can be made easier to use for the user.

  In this embodiment, the example in which the preset function is activated (turned on) at the timing when the slide of the second unit 702 is detected is described. However, the activation is reversed at the timing when the slide is detected. Control can also be set to turn off the function.

  For example, when the second unit 702 is slid from the first position to the second position, the camera function or the television broadcast reception function activated (turned on) when the slide of the second unit 702 is detected is turned off. Control can also be set as follows. As a result, the user can perform control to turn off the activated function without performing a key operation, and can easily turn off the function.

  The lens cover 714 of the communication terminal 700 is formed in a shape protruding upward from the back portion 715 of the second unit 702. However, as a different embodiment of the lens cover 714, the lens 711 can be covered only by the back 715 of the second unit 702, and the back 715 can be used as a lens cover. In this case, when the second unit 702 is in the first position, the lens 711 and the back part 715 are located away from the lens 711 (position where the lens 711 is exposed), and the second unit 702 is in the second position. In this case, the back portion 715 needs to be set to a position that covers the lens 711.

  Next, 3rd Embodiment is described based on FIG. 17 and FIG. Since the hardware configuration is almost the same as that of the communication terminal of the second embodiment, the description thereof will be omitted, and description will be made using only FIGS. 17 and 18. FIG. 17 is an explanatory diagram illustrating an operation state when the second unit is slid from the second position to the first position in the communication terminal according to the third embodiment. FIG. 18 is a flowchart showing the operation of the communication terminal.

  In the communication terminal 700 of the third embodiment, when the second unit 702 is slid from the second position to the first position, the touch panel function of the display 704 using the touch panel (function to accept input by touching). ) Is controlled to ON. This setting is made as an initial setting. Alternatively, the touch panel function can be set to be turned on as control when the user slides the second unit 702 from the second position to the first position. When the touch panel function of the display 704 is turned on, the user can perform touch input with the fingertip 1701 or touch input with the stylus pen 1702.

  In the communication terminal 700 according to the third embodiment, an operation when the second unit 702 is slid will be described with reference to FIG.

  In S1801, when the state detection unit 727 detects that the second unit 702 has been slid from the second position to the first position (YES in S1801), the control unit 725 sets the display 704 regarding the touch. It is determined whether or not. If the setting related to the touch of the display unit 704 is not made (NO in S1802), the control based on the slide of the second unit 702 ends. If the setting related to the touch of the display device 704 has been made (YES in S1802), the control unit 725 turns on the touch panel function in the display device 704 in S1803. When input by touch on the display unit 704 is turned on, touch input by the user's fingertip 1701 or input by the stylus pen 1702 becomes possible.

  After the touch panel function on the display unit 704 is turned on, in S1804, the state detection unit 727 detects whether or not it has been slid from the first position to the second position. If no slide is detected (NO in S1804), the control unit 725 keeps the touch panel function ON in S1803. When a slide is detected (YES in S1804), the control unit 725 turns off the touch panel function in S1805. Then, after being turned off, the control based on the slide of the second unit 702 ends.

  Thus, in this communication terminal 700, when the second unit 702 is slid from the first position to the second position, or when it is slid from the second position to the first position, a specific function is provided. ON or OFF. For this reason, the user can turn on a specific function without performing a key operation, or can turn off a function being activated, and the user can easily turn on / off the function. it can.

  Further, the fourth embodiment will be described based on FIGS. 19 and 20. Since the hardware configuration is almost the same as that of the communication terminal of the second embodiment, the description thereof will be omitted as in the third embodiment, and description will be made using only FIG. 19 and FIG. FIG. 19 is an explanatory diagram illustrating an operation state when the second unit is slid from the first position to the second position in the communication terminal according to the fourth embodiment. FIG. 20 is a flowchart showing the operation of the communication terminal.

  In the communication terminal 700 of the fourth embodiment, when the second unit 702 of the communication terminal 700 is slid from the first position to the second position, the Japanese input function is controlled to be ON, and the second unit 702 is When the user slides from the second position to the first position, the Japanese input function is controlled to be OFF.

  The operation when the second unit 702 is slid from the first position to the second position in the communication terminal 700 of the fourth embodiment will be described with reference to FIG.

  In S2001, when the state detection unit 727 detects that the second unit 702 has been slid from the first position to the second position (YES in S2001), the control unit 725 sets the Japanese input in S2002. It is determined whether or not. If the Japanese input is not set (NO in S2002), the control based on the slide of the second unit 702 ends. If Japanese input has been set (YES in S2002), the control unit 725 turns on the Japanese input function in S2003. When the Japanese input function is turned on, the user can input Japanese using the direction key 709, the enter key 710, and the numeric keypad 705. The numeric keypad 705 is used for inputting Japanese, and the direction key is used for selecting a displayed Japanese conversion candidate.

  After the Japanese input function is turned on, in S2004, the state detection unit 727 detects whether or not the second unit 702 has been slid from the second position to the first position. If no slide is detected (NO in S2004), control unit 725 keeps the Japanese input function ON. When a slide is detected (YES in S2004), in S2005, the control unit 725 turns off the Japanese input function. Then, after turning OFF, the control based on the slide of the second unit 702 ends.

  Thus, in this communication terminal 700, the specific function is turned on when the second unit 702 is slid from the first position to the second position, and is specified when the second unit 702 is slid from the second position to the first position. It is also possible to control to turn off the function. For this reason, the user can turn on / off a specific function without performing a key operation, and the user can easily turn on / off the function.

  In the first to fourth embodiments, the camera function, the television broadcast reception function, the touch input function of the touch panel, and the Japanese input function are set as the functions to be turned on or off. It is also possible to set a browser function when connected to the Internet, an e-mail function, a phone book function (such as browsing and editing of the phone book), and a content playback function (such as playing a downloaded video).

It is a front view which shows the communication terminal of 1st Embodiment. It is a side view of the communication terminal. It is a front view showing the state where the 2nd unit of the communication terminal was slid up. It is a side view showing the state where the 2nd unit of the communication terminal was slid up. It is a front view which shows the communication terminal of 2nd Embodiment. It is a rear view of the communication terminal. It is a side view of the communication terminal. It is a front view showing the state where the 2nd unit of the communication terminal was slid to the 2nd position. It is a rear view which shows the state which made the 2nd unit of the communication terminal slide to the 2nd position. It is a side view showing the state where the 2nd unit of the communication terminal was slid to the 2nd position. It is explanatory drawing which shows the connection state of both units in the state which made the 2nd unit slide to the 1st position. It is explanatory drawing which shows the connection state of both units in the state which made the 2nd unit slide to the 2nd position. It is a functional block diagram which shows the communication terminal. It is explanatory drawing which shows an operation state when a 2nd unit is slid from the 2nd position to the 1st position in the state which lengthened the communication terminal. It is explanatory drawing which shows an operation state when a 2nd unit is slid from the 2nd position to the 1st position in the state which laid the communication terminal sideways. It is a flowchart which shows operation | movement of the communication terminal. It is explanatory drawing which shows an operation state when the 2nd unit is slid from the 2nd position to the 1st position in the communication terminal of 3rd Embodiment. It is a flowchart which shows operation | movement of the communication terminal. In the communication terminal of 4th Embodiment, it is explanatory drawing which shows an operation state when a 2nd unit is slid from the 1st position to the 2nd position. It is a flowchart which shows operation | movement of the communication terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Communication terminal 101 1st unit 102 2nd unit 104 Indicator 105 1st key 107 2nd key 111 Groove 112 Sliding part 700 Communication terminal 701 1st unit 702 2nd unit 703 Receiver part 704 Indicator 705 Ten key 706 Transmission 707 Multi-directional key 708 Function key 709 Direction key 710 Enter key 711 Lens 712 Speaker unit 713 Side key 714 Lens cover 715 Back 720 Wireless communication unit 721 Camera unit 722 Audio processing unit 723 Operation unit 724 Broadcast receiving unit 725 Control unit 726 Storage Unit 727 state detection unit 728 acceleration sensor 729 slide sensor 730 antenna 731 antenna 740 first terminal 741 second terminal 742 terminal

Claims (15)

A first unit having a display and a first key different from the multi-directional key on the front surface of the housing;
A communication terminal comprising a second unit slidably attached to the front surface of the first unit and having a second key different from the first key. The second unit is slidable at least between a first position where the second unit overlaps the first key and a second position where the second unit does not overlap the first key. The communication terminal according to claim 1. A position detection sensor for detecting the position of the second unit;
When this position detection sensor detects that the second unit has been slid from the first position to the second position, or has detected that the second unit has been slid from the second position to the first position, it is preset. The communication terminal according to claim 1, further comprising a control unit that turns on or turns off the predetermined function. A state detection sensor for detecting whether the communication terminal is in a vertical state or not,
The communication terminal according to claim 3, wherein the control unit switches the predetermined function according to the state of the communication terminal detected by the state detection sensor. The control means assigns an operation function for operating a function to be turned on or a function to be switched to a key that can be exposed and input when a predetermined function is turned on or switched. The communication terminal according to claim 3 or 4. 6. The function according to claim 3, wherein the function is any one of a camera function, a television broadcast receiving function, a touch input function of a touch panel, a browser function, a mail function, a telephone directory function, and a Japanese input function. A communication terminal according to any one of the above. A camera lens disposed on the back of the first unit;
The second unit includes a lens cover that covers the lens,
When the second unit is in the first position, the lens cover is separated from the lens, and when the second unit is in the second position, the lens cover is The communication terminal according to claim 2, wherein the communication terminal is set in a positional relationship covering the lens. The communication terminal according to claim 1, wherein the second key is a multidirectional key. The communication terminal according to claim 1, wherein the first key is a numeric keypad. The communication terminal according to claim 1, wherein the display is a touch panel. 11. The communication according to claim 1, wherein the surface on which the first key of the first unit is arranged and the surface on which the second key is arranged are set to have substantially the same shape. Terminal. A position detecting step for detecting a position of a second unit that is slidably attached to the front surface of the first unit having a first key different from the multi-directional key and has a second key different from the first key;
When it is detected in the position detecting step that the second unit has been slid from the first position overlapping the first key to the second position not overlapping, or from the second position to the first position. A control step of turning on a predetermined function or turning off the function when it is detected that the function is detected. A state detecting step for detecting whether or not the communication terminal is in a vertical state;
12. The communication terminal control method according to claim 11, wherein the control step switches the predetermined function to be turned on based on the state of the communication terminal in the state detection step. A position detection function for slidably attaching to the front surface of the first unit having a first key different from the multi-directional key, and detecting the position of the second unit having a second key different from the first key;
When the position detecting step detects that the second unit has been slid from the first position overlapping the first key to the second position, or has been slid from the second position to the first position. A program for a communication terminal for causing a computer to realize a control function for turning on or turning off a predetermined function when a function is detected. With a state detection function that detects whether or not the communication terminal is in a vertical state,
The communication terminal program according to claim 14, wherein the control function switches the predetermined function to be turned on based on the state of the communication terminal in the state detection function.

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