JP2005006219A - Mobile communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable telephone set by which a user can perform a key operation during the performance of an application program even when a cover part is closed and develop an application program without taking into consideration control for key allocation switching accompanied by the opening/closing of the cover part. <P>SOLUTION: This portable telephone set 20 provided with an application program performing means for performing an application program is provided with a state change detecting means 212 for detecting a change in the cover part 20b between an opened state and a closed state, and a key allocation switching means 213 for switching key allocation that can be operated by the user between a key 214 for normal operation and a key 215 for operation with the cover part closed during the performance of the application program on the basis of a detection result of the state change detecting means 212 without using a command from the application program performed by an application program performing means 211. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mobile communication terminal such as a cellular phone provided with a first key operation unit and a second key operation unit each having at least one key at different positions.
[0002]
[Prior art]
Conventionally, as this type of mobile communication terminal, a mobile phone capable of executing an application program described in an object-oriented programming language independent of a platform is known (for example, see Patent Document 1). For example, a mobile phone is known that has a JAVA (registered trademark) virtual machine function and can execute an application program written in JAVA (registered trademark). In such a mobile phone, a user downloads a desired application program from a server on the mobile communication network and registers it in the mobile phone. When the registered application program is activated by the user, a standby screen consisting of a three-dimensional video is displayed on the display of the mobile phone, a game or fortune-telling is performed on the mobile phone, and music is played. You can do it. During the execution of such an application program, the user can instruct the progress of the game or select the music piece to be played by operating the keys of the mobile phone. In the case of a foldable mobile phone having a main body having a key for normal operation and a lid covering the main body, the key for normal operation in the main body in the first state with the lid open. Manipulate.
[0003]
[Patent Document 1]
JP 2000-347867 A
[Problems to be solved by the invention]
In the conventional foldable mobile phone capable of executing the application program, there is a case where it is desired to continue the execution of the application program even in the second state where the lid is closed. In this case, the key for closing operation such as the back key and the side key exposed to the outside is operated in the second state in which the lid portion is closed. In this way, it is conceivable that the key assignment switching is controlled by the application program so that the key for the closing operation can be operated when the lid is closed during the execution of the application program.
However, if control of key assignment switching is performed by an application program, there is a problem that it is necessary to develop an application program in consideration of complicated control for the key assignment switching.
[0005]
The present invention has been made in view of the above problems. The purpose is to enable key operation during execution of the application program even when the key of the first key operation unit is in a second state in which the key cannot be operated, and to change key assignment in accordance with the state change of the mobile communication terminal. It is an object of the present invention to provide a mobile communication terminal that can develop an application program without considering control for the purpose.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention of claim 1 includes a first key operation unit and a second key operation unit each having at least one key at different positions, and at least the first key operation unit. A mobile communication terminal capable of taking a first state in which the key of the first key can be operated and a second state in which the key of the first key operation unit cannot be operated and the key of the second key operation unit can be operated The state change detection means for detecting a change between the first state and the second state, and the state without using a command from the application program executed by the application program execution means. Based on the detection result of the change detection means, a key assignment for switching the key assignment used during execution of the application program between the key of the first key operation unit and the key of the second key operation unit. It is characterized in that provided the switching means.
According to a second aspect of the present invention, in the mobile communication terminal of the first aspect, there is provided a main body having a normal operation key for a user to operate during normal use, and a normal operation key for the main body. And the first state is an open state in which the lid is moved to a position where a user can operate a key for normal operation of the main body, and the second state Is a closed state in which the lid portion is moved to a position covering the normal operation key of the main body portion, and the key of the first key operation portion is a key for normal operation provided on the main body portion. The key of the second key operation part is a key for closing operation that can be operated by the user when the lid part is in the closed state, and the state change detecting means is provided on the lid part. A change between an open state and a closed state is detected.
[0007]
The mobile communication terminal according to claim 1, wherein when the key of the first key operation unit is in a first state in which the key can be operated, the first key operation as a key operated by the user during execution of the application program Department keys are assigned. Using the keys of the first key operation unit, necessary key operations can be performed during execution of the application program.
During execution of the application program, if the first state changes to a second state where the keys of the first key operation unit cannot be operated and the keys of the second key operation unit can be operated, the change Is detected by the state change detecting means. Based on the detection result of the state change detection means, the key assignment used during the execution of the application program is switched from the key of the first key operation unit to the key of the second key operation unit. By using the keys of the second key operation unit, necessary key operations can be performed during execution of the application program. As described above, even when the key of the first key operation unit cannot be operated, the key operation can be performed during the execution of the application program. Moreover, the key assignment can be switched when the second state is reached without using a command from the application program being executed by the application program execution means.
[0008]
3. The mobile communication terminal according to claim 2, wherein when the cover is in an open state in which a key for normal operation of the main body can be operated, the normal of the main body is used as a key operated by the user during execution of the application program. An operation key is assigned. Using the normal operation keys of the main body, necessary key operations can be performed during execution of the application program.
When the lid is changed from the open state to the closed state that covers the normal operation key by the user's operation during the execution of the application program, the state change detecting means detects the change. Based on the detection result of the state change detection means, the key assignment used during the execution of the application program is switched from the normal operation key to the closing operation key. By using the key for the closing operation, a necessary key operation can be performed during the execution of the application program. Thus, even when the lid is closed, key operations can be performed during execution of the application program. In addition, the key assignment can be switched when the lid is closed without using a command from the application program executed by the application program execution means.
[0009]
The above-mentioned “mobile communication terminals” include mobile telephones such as PDC (Personal Digital Cellular), GSM (Global System for Mobile Communication), TIA (Telecommunication Insulation Association) T (Mobile Communications IM), and the like. Mobile phones, PHSs (Personal Handyphone Services), and automobile phones that can execute application programs. Examples of the “mobile communication terminal” include a mobile mobile communication terminal such as a PDA (Personal Digital Assistance) that does not have a telephone function, in addition to the telephone set described above.
In addition, in the “open state” that is the first state, the opposing surface of the main body part and the lid part is separated from each other by swinging the lid part or the main body part around the hinge part at the end. In addition to the open state, the main body and the lid slide by rotating around the rotation axis at the end with the lid covering the main body and the opposing surface of the main body contacting or close to each other. The state of being separated is also included. Thus, the mode of the open state of the lid portion is not limited to a specific one, and the state between the open state (first state) and the closed state (second state) of the lid portion. The mode of change is not limited to a specific one.
Further, the above-mentioned “key for operation when closed” may be provided on either the main body or the lid as long as the user can operate the lid when the lid is in the closed state.
The control and information processing in the mobile communication terminal can also be realized by executing a predetermined program on a computer provided in the mobile communication terminal. Delivery of the program used in the computer may be performed using a recording medium such as an FD or CD-ROM in which the program is recorded as digital information, or may be performed using a communication network such as a computer network.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a mobile phone as a mobile communication terminal will be described.
FIG. 2 is an explanatory diagram showing a main part of a mobile communication system using the mobile phone 20 according to the present embodiment. In this mobile communication system, the mobile phone 20 used by the user 1 has a configuration capable of executing application programs developed by platform-independent object-oriented programming. Examples of the application program include an application program written in JAVA (registered trademark). The mobile phone 20 can be connected to a mobile phone communication network 10 as a communication network. An application program download server (hereinafter referred to as “download server”) 11 as a program providing server is connected to the cellular phone communication network 10. In addition to the download server 11, an information providing server, a location registration server, a mail server, etc. (not shown) are connected to the mobile phone communication network 10. These servers may be constituted by a single server. Further, these servers may be configured as dedicated control devices having different configurations, or may be configured using a general-purpose computer system. Each server may be configured by a single computer, or may be configured by connecting a plurality of computers each having a plurality of functions via a network.
[0011]
When receiving a download request from the mobile phone 20, the download server 11 transmits an application program related to the request to the mobile phone 20. In addition, when receiving a browsing request from the mobile phone 20, the Web server 12 transmits a Web page screen that is a browsing screen according to the request to the mobile phone 20.
[0012]
The application program provided from the download server 11 is provided from the application program developer 2. Specifically, for example, it is uploaded from the personal computer on the application program developer 2 side to the download server 11 via a dedicated line or a public line. Note that a recording medium such as an optical disk or a magnetic disk on which the developed application program is recorded is sent from the application program developer 2 to a communication carrier that manages and operates the download server 11, and the application program in the recording medium is downloaded to the download server 11. You may read and provide. The application program thus provided is registered in the download server 11 in a state where it can be downloaded from the mobile phone 20 via the mobile phone communication network 10.
[0013]
The location registration server is a server that registers and manages information on the current location where each mobile phone 20 is located, that is, location information of a location registration management area where each mobile phone 10 is located. This location registration management area may be an area composed of one cell managed by a base station that communicates wirelessly with each mobile phone 20, or may be an area where a plurality of adjacent cells are managed as one group. Good. A typical size of one location registration management area is several kilometers to several hundred meters. The location registration of each mobile phone 20 with respect to the location registration server is performed periodically when the power is turned on and whenever the cell where the mobile phone 20 is located changes.
[0014]
The information providing server sends various information such as area information, position information (latitude, longitude, address) of the corresponding position registration management area, content information, and the like through a base station of each position registration management area through a predetermined communication channel. To deliver. As described above, when the mobile phone 10 performs a receiving operation at a predetermined timing for a communication channel through which various types of information are transmitted, the information transmitted through the communication channel is acquired and stored in an internal memory serving as an information storage unit. Can be saved. The reception operation for each communication channel can be executed at the timing set in advance by the initial setting or at the timing set by the user. This reception operation may be performed regularly or irregularly.
[0015]
The mail server transfers the mail data transmitted from each mobile phone 20 to the next mail server, receives the mail sent to each mobile phone 20, stores and manages it, and each mobile phone 20 The received mail data is transmitted to each mobile phone in response to a mail acquisition request from the mobile phone.
[0016]
3A and 3B are external views of the mobile phone 20, and FIG. 4 is a schematic configuration diagram showing a hardware configuration of the mobile phone 20.
The mobile phone 20 is a clamshell (folding) type mobile phone including a main body portion 20a and a lid portion 20b that can swing with respect to a hinge portion 20c. The lid portion 20b is in a first state in which the keys 21 to 27 for normal operation of the first key operation portion provided in the main body portion 20a as shown in FIG. And a second state (hereinafter referred to as “closed state”) covering the normal operation keys 21 to 27 as shown in FIG. 3B.
[0017]
The cellular phone 20 includes a data storage means including a system bus 200, CPU 201, RAM 202 and ROM 203, an input device 204, an output device 205, a cellular phone communication device 206, and an open / close sensor 207 as a state change detection means. Components such as the CPU 201 and the RAM 202 exchange various data and instructions of a program to be described later via the system bus 200.
[0018]
The input device 204 includes a data input key (ten key, * key, # key) 21, a call start key 22, an end key 23, a scroll key 24, a multi-function key 25, soft keys 26 and 27, a microphone 28, and a rear key. 33, 34 and the like. Soft keys 26 and 27 are keys whose functions at the time of operation are defined by a program executed on the mobile phone. Among these keys, the keys 21 to 27 in the first key operation unit on the main body 20a side are keys for normal operation, and the keys 33 and 27 in the second key operation unit on the lid 20b side. Reference numeral 34 denotes a key for closing operation.
The output device 205 includes a main display 29 and a sub display 32 which are liquid crystal displays (LCD) as image display means, a speaker 30 and the like. The main display 29 is provided on the inner surface side of the lid portion 20b, and the sub-display 32 is provided on the back side of the lid portion 20b.
[0019]
The mobile phone communication device 206 is for communicating with another mobile phone, the above-described server 11 and the like via the mobile phone communication network 10. The mobile phone communication device 206 exchanges mail with other mobile phones via the mobile phone communication network 10 or connects to an external communication network such as the Internet from the mobile phone communication network 10 via a gateway server. And for exchanging e-mails on the Internet. Further, the mobile phone communication device 206 downloads an application program provided by the download server 11 via the mobile phone communication network 10 or receives distribution information including location information of the current location. Also used as
[0020]
In addition, by operating the operation unit configured by the keys 21 to 27 on the main body unit 20a side that can be operated by the user 1, the user can input data such as a URL to the mobile phone 20, When a call is received, the call can be started and ended, and an application program can be selected, started, and stopped. Further, the user can download and register an application program from the download server 11 by operating the operation unit, and can select and execute the registered application program. The user can also display information received from the information providing server of the mobile phone communication network 10 by operating the operation unit.
[0021]
The output unit composed of the output devices such as the displays 27 and 32 and the speaker 30 displays a Web page screen received via the mobile phone communication network 10 on a liquid crystal display (LCD) 27, or a mobile phone. It is used when notifying the user that information has been received from the communication network 10. Specifically, when the information is received, an incoming call notification image is displayed on the displays 27 and 32 of the output unit, or a ring tone is output from the speaker 30. The output unit is also used when displaying an image or sound related to the execution of the application program such as the game, or when displaying information received from the information providing server. It is done.
[0022]
The open / close sensor 207 includes a protrusion 30a provided near the hinge portion 20c on the inner surface side of the lid portion 20b, a recess portion 30b provided near the hinge portion 20c on the inner surface side of the main body portion 20a, and the recess portion 30b. It is comprised by the protrusion detection switch provided in the inside. The protrusion detection switch is in an on state or an off state when the lid portion 20b is open, and changes from an on state to an off state or from an off state to an on state when the lid portion 20b is closed and pressed by the tip of the protrusion 30a. Switch. When the clamshell is closed and the lid portion 20b is closed, the keys 21 to 27 for normal operation on the main body portion 20a side are covered with the lid portion 20b and cannot be operated. At this time, the main display 27 is covered with the main body 20a and is not visible from the outside. In this state, the protrusion 30a enters the recess 30b, and this is detected by the protrusion detection switch, so that it is recognized that the clamshell is closed, that is, the lid portion 20b is closed.
The state change detecting means for detecting opening / closing of the lid is not limited to the opening / closing sensor 207 having the above-described configuration, and a state change detecting means having another configuration may be used. For example, a sensor using light reflection or transmission can be used.
[0023]
FIG. 5 is a functional block diagram showing an extracted main part of the mobile phone 20, and FIG. 6 is an explanatory diagram of the software structure in the mobile phone 20.
The mobile phone 20 includes a main control unit 210, an application program execution unit 211, a state change detection unit 212, a normal operation key 214, and a closing operation key 215. The key 214 for normal operation corresponds to the keys 21 to 27 on the inner surface side of the main body 20a shown in FIG. 3A, and the key 215 for closing operation is the lid shown in FIG. It corresponds to the back keys 33 and 34 on the back side of 20b. The main control unit 210 has key assignment switching means 213 for switching key assignment for operation during execution of the application program between the key 214 for normal operation and the key 215 for closing operation. The cellular phone 20 implements the functions of an application program execution unit 211, a state change detection unit 212, and a key assignment switching unit 213 by executing a predetermined program on hardware such as a CPU.
[0024]
The application program execution means (application program execution management unit) 211 includes the system bus 200, the CPU 201, the RAM 202, and the like. This application program execution means 211 corresponds to the central “program execution environment” in the software structure of FIG. 6, and includes a class library, an execution environment management library, an application used for an application program developed by object-oriented programming. Software such as management is provided, and the execution environment of application programs is managed.
Here, the application program can be used by calling a class library such as a function in the program execution environment via a class library API (application interface). The call history of a class library such as this function is held until the virtual execution environment (virtual machine: VM) of the application program is terminated.
The execution environment management library in the program execution environment can be used by calling a telephone platform library in the telephone platform described later via the telephone platform API.
[0025]
The state change detection unit 212 includes the system bus 200, the CPU 201, the open / close sensor 207, and the like, and has a function of detecting a change between the open state and the closed state of the lid 20b.
[0026]
The key assignment switching unit 213 is a part of the main control unit 210, is configured by the system bus 200, the CPU 201, etc., and has the following functions. That is, the key assignment switching unit 213 detects a key used during execution of the application program when the state change detection unit 212 detects a change from the open state to the closed state during execution of the application program. It has a function of switching the assignment from the key 214 for normal operation to the key 215 for closing operation.
[0027]
The main control unit 210 exchanges control commands and various data with the application program execution unit 211, the state change detection unit 212, the normal operation key 214, the closing operation key 215, and the like. Control in cooperation with these. Further, the main control unit 210 is in the lowermost “telephone platform” in the software structure of FIG. 6 and executes a control program and a user interface for controlling the above-described telephone communication and provides a telephone platform library. To do. The telephone platform executes various processes in the application program by sending an event to the execution environment management library in the program execution environment, and the application management software in the program execution environment via the application management API. It can be called and used.
[0028]
A control program for constructing a telephone platform for operating the mobile telephone 20 according to a predetermined procedure is stored in the RAM 202 and the ROM 203. Further, a basic OS (operating system) program, a program for constructing the program execution environment, and an application program are also stored in the RAM 202 and the ROM 203. These programs are called up and executed in the work area in the CPU 201 or RAM 202 as necessary.
[0029]
When downloading an application program from the download server 11 in the mobile phone 20 having the above configuration, the user 1 accesses the download server 11 by operating a key of the operation unit. As a result, a download selection screen for selecting a downloadable application program is displayed on the display 27. In the download selection screen, when the user selects an application program desired by the scroll key 24 and presses the multi-function key 25, the main control unit controls the mobile phone communication network communication device 206, An application program is downloaded from the download server 11.
Specifically, in the present embodiment, the application program is composed of a JAD file (text data) that is property information and a JAR file (binary data) that is a program body. The JAD file includes application data, application version, application vendor name, basic data such as URL data where the JAR file is stored, and whether the application program has already been authenticated, or the application program is connected to the network. This includes setting data such as whether the application program is used in a state in which the application program is used or whether the application program is resident. The JAD file also includes the URL (distribution source address data) of an official Web page that publishes related information related to the application program. When the application program desired by the user is selected on the download selection screen, only the JAD file is downloaded from the application program. Thereafter, the main control unit 210 reads URL data in which the JAR file is stored from the JAD file, accesses the URL, and downloads the JAR file. The application program composed of the JAD file and the JAR file downloaded in this manner is stored in the RAM 102 by the main control unit 210.
[0030]
When executing the application program downloaded in this way, the user 1 operates the keys of the operation unit to display an application selection screen for selecting an application program to be executed on the display 27. Then, on the application selection screen, when the user selects an application program desired by the scroll key 24 and presses the multi-function key 25, the application program execution means (application program management unit) 211 reads the JAR file. Start the application program. At this time, if necessary, the setting data of the JAD file is referred to and an environment for performing the processing operation according to the setting data is set. Further, when a specific processing operation is performed during execution of the application program, the setting operation of the JAD file related to the processing operation is referred to perform a processing operation suitable for the application program.
As an application program, various applications such as an application program for operating a variety of keys on the operation unit to enjoy a game or the like, or a resident application program for displaying a standby screen made up of a three-dimensional video on the displays 29 and 32, etc. A program is included.
[0031]
Next, the key assignment switching when the lid 20b is closed during the execution of the application program, which is a characteristic part of the present invention, will be described.
FIG. 1 is a sequence diagram showing processing when key assignment switching is performed when the user closes the lid 20b during execution of the application program.
First, the user can select and execute a desired application program from the list of application programs displayed on the main display 29 of the mobile phone 20. If the soft keys 26 and 27 on the main body 20a defined in the application program are operated during execution of the application program, information on the key operation is sent to the application side. On the application side, it is possible to use the received key operation information to proceed with the game or to select a piece of music to be played back. When the camera function is used, it is possible to execute a shooting shutter operation based on the key operation information.
[0032]
Next, when the user closes the cover part 20b during the execution of the application program, the change to the closed state of the cover part 20b is detected by the state change detection means 212 on the telephone platform side. Even when the lid 20b is in the closed state, the execution of the application program is continued. Based on the detection result of the state change detection means 212, the key assignment used during the execution of the application program is assigned from the normal operation key 214 on the inner surface side of the main body portion 20a to the rear side of the lid portion 20b. Switch to a certain closing operation key 215 (rear keys 33, 34). By switching the key assignment, the user can perform a key operation necessary for the application program even when the lid 20b is closed during the execution of the application program.
[0033]
Further, when the user reopens the lid 20b during the execution of the application program, the change to the open state of the lid 20b is detected by the state change detecting means 212 on the telephone platform side. Based on the detection result of the state change detection means 212, the key used during the execution of the application program is assigned from the closing operation key 215 (rear keys 33, 34) on the rear side of the lid 20b to the main body. Switch to the key 214 for normal operation on the inner surface side of 20a. By switching the key assignment, when the lid 20b is opened again during execution of the application program, the user can perform a key operation necessary for the application program.
[0034]
As described above, according to the present embodiment, when the lid 20b is closed during execution of the application program, the assignment of the key used by the user is switched to the key 215 for the closing operation (rear keys 33 and 34). By using the closing operation key 215, the key operation can be performed during the execution of the application program even when the lid 20b is closed. Moreover, since the key assignment can be switched with the opening and closing of the lid 20b without using a command from the application program executed by the application program execution means 211, the control for switching the key assignment is considered. Application programs can be developed without doing so.
[0035]
In the above embodiment, the case where the key 215 for closing operation is the back keys 33 and 34 provided on the back side of the lid has been described. However, the present invention is not limited to the key 215 for closing operation. The same can be applied to the case where a key is provided at the position. For example, the present invention can be similarly applied to a case where a side key is provided on the side surface of the main body 20a or the side surface of the lid 20b as the closing operation key 215.
In the above embodiment, a mobile phone that can execute an application program developed by platform-independent object-oriented programming using a program language such as JAVA (registered trademark) has been described. However, the present invention is not limited to a mobile phone. The present invention can be applied without being limited to the type of application program to be executed, and the same effect can be obtained.
In addition, the present invention can be applied to a portable PDA in addition to a telephone such as a PHS or a car phone as long as it can execute an application program and can browse a browsing screen distributed on a communication network. The same effect can be obtained.
[0036]
【The invention's effect】
According to the first and second aspects of the present invention, the key of the first key operation unit cannot be operated and the first key can be operated from the first state in which the key of the first key operation unit can be operated during execution of the application program. When the key of the second key operation unit is changed to the operable second state, the key assignment used by the user is switched to the key of the second key operation unit. By using the key of the second key operation unit, the key operation can be performed during the execution of the application program even when the key of the first key operation unit is in the second state where the key cannot be operated. Moreover, since the key assignment can be switched according to the state change between the first state and the second state without using a command from the application program executed by the application program execution means, There is an effect that an application program can be developed without considering the control for switching the key assignment.
In particular, when the lid is closed during execution of the application program, the key assignment used by the user is switched to the key for the closing operation. By using the key for the closing operation, the key operation can be performed during the execution of the application program even when the lid is closed. In addition, since the key assignment can be switched in accordance with the state change of the lid without using a command from the application program executed by the application program execution means, the control for the key assignment switching is considered. This makes it possible to develop application programs without having to do so.
[Brief description of the drawings]
FIG. 1 is a sequence diagram showing processing when key assignment switching is performed when a user closes a lid during execution of an application program in a mobile phone according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram showing a main part of a mobile communication system using the mobile phone.
FIGS. 3A and 3B are external views of the mobile phone. FIGS.
FIG. 4 is a schematic configuration diagram showing a hardware configuration of the mobile phone.
FIG. 5 is a functional block diagram showing an extracted main part of the mobile phone.
FIG. 6 is an explanatory diagram of a software structure in the mobile phone.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Mobile phone communication network 20 Mobile phone 20a Main part 20b Cover part 210 Main control part 211 Application program execution means 212 State change detection means 213 Key assignment switching means 214 Key of first key operation part (key for normal operation)
215 Key of second key operation section (key for closing operation)

Claims (2)

A first state in which a first key operation unit and a second key operation unit each having at least one key are provided at different positions, and at least a key of the first key operation unit can be operated; A mobile communication terminal capable of taking a second state in which the key of the key operation unit cannot be operated and the key of the second key operation unit can be operated;
State change detecting means for detecting a change between the first state and the second state;
The first key operation assigns a key to be used during execution of the application program based on the detection result of the state change detection means without using a command from the application program executed by the application program execution means. A mobile communication terminal, comprising: key assignment switching means for switching between a key of the unit and a key of the second key operation unit. The mobile communication terminal according to claim 1, wherein
A main body having a key for normal operation for a user to operate during normal use, and a lid for covering the key for normal operation of the main body,
The first state is an open state in which the lid is moved to a position where a user can operate a key for normal operation of the main body,
The second state is a closed state in which the lid is moved to a position where the main operation key of the main body is covered.
The key of the first key operation unit is a normal operation key provided in the main body unit,
The key of the second key operation unit is a key for closing operation that can be operated by the user when the lid is in a closed state,
The mobile communication terminal characterized in that the state change detecting means detects a change between an open state and a closed state of the lid.

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