Abstract:
Provided is an inputting device that is disposed in an opening of a cabinet surface. The device includes an elastic sheet having an outside surface disposed on an inside surface of the cabinet including the opening and across the opening. A sliding key is fixed on the outside surface of the elastic sheet with at least a portion in the opening of said cabinet surface. The device also includes sensors to detect movement, in a horizontal direction that is substantially parallel to said cabinet surface, of the sliding key. The device also includes guides being possible to be recognized optically that are disposed on designated positions on the elastic sheet, and the sensors detect the moved direction and the amount of the horizontal movement of the sliding key by reading the movements of said guides optically.

Description:
BACKGROUND OF THE INVENTION 
     The present invention relates to an inputting device and a mobile terminal used this inputting device, in particular, which provides an operating key that is moved in the almost parallel and perpendicular directions to the surface of the cabinet of the mobile terminal, and which detects the movement of the operating key in the oblique direction on the almost parallel surface of the cabinet. 
     DESCRIPTION OF THE RELATED ART 
     Many electronic instruments such as mobile communication terminals and personal digital assistants (PDA) provide an inputting device called as a pointing device. The user of the mobile terminal can move the subjects to be controlled such as a cursor, a pointer, and a focus on a display by operating the pointing device. 
     In case of the mobile communication terminal, a pointing device, which moves the subjects to be controlled by using inputting keys (direction keys) corresponding to the length directions and the width directions on the display, has been widely used. The pointing device using the direction keys detects a key input operation by a user and converts the detected key input operation into a moving control command to the subject to be controlled in the length direction and the width direction. 
     Recently, applications executing on the mobile communication terminal have been multi-functions, and the necessity, which the subjects to be controlled are moved not only in the length directions and the width directions on the display but also in the oblique directions on the display, has been largely increased. However, the pointing device used the direction keys has not been designed by having a premise that the subjects to be controlled are moved in the oblique directions. Therefore, in case that the length direction key and the width direction key are pushed at the same time, the subject to be controlled is only moved to the 45° for the length direction and the width direction on the display. That is, the pointing device used the direction keys has not been able to make the subject to be controlled move in an arbitrary direction. 
     There is a stick type pointing device (joystick), as a pointing device by which the subject to be controlled can be moved in an arbitrary direction. At the joystick, by slanting a lever back and forth and right and left, the moving control command can be given to the subject to be controlled on the display in the arbitrary direction. 
     However, the mobile communication terminal has been required to be small and thin, consequently, it is not desirable that a pointing device has a structure in which a lever sticking out of the surface of the cabinet is assembled in the mobile communication terminal. And even if the part sticking out of the surface of the cabinet is made to be short, since the length is short, the lever becomes not enough to be moved, and the operation ability is decreased. 
     Japanese Patent Application Laid-Open No. HEI 4-125723 discloses a pointing control device. This patent application has purposes that a pointing device can be assembled in a small size computer and its operation ability is good. In this pointing control device, the pointing device, in which the moving control command can be given to the subject to be controlled on the display in the arbitrary direction, is formed by a structure. This structure does not have a part sticking out of the cabinet, and makes a plate type slider being capable of moving in the arbitrary direction detect the amount of movement per unit time. 
     However, this pointing control device has a complex structure that needs a housing to support the plate type slider, and it is difficult to make the pointing device small and thin. Therefore, this pointing control device is not desirable to apply the mobile communication terminal that requires to be small and thin. 
     Furthermore, since this pointing control device has not been designed for applying to the mobile communication terminal as its premise, the waterproof and the dustproof have not been considered. Therefore, this pointing control device is not desirable to apply to the mobile communication terminal, because the mobile communication terminal is frequently used outdoors and there is a possibility that a drop of water and dust hit the cabinet of the mobile communication terminal. 
     As mentioned above, the following conditions are required for the pointing device to be applied to the mobile communication terminal. That is, first, the moving control command to the subject to be controlled can be formed on the display in an arbitrary direction. Second, the structure does not have a part sticking out of the cabinet. Third, the structure is not complex. And fourth, the waterproof and the dustproof are provided. 
     SUMMARY OF THE INVENTION 
     It is therefore an object of the present invention to provide an inputting device and a mobile terminal used this inputting device, in particular, in which a moving control command to a subject to be controlled is formed on a display in an arbitrary direction and the waterproof and the dustproof are provided and whose structure does not have a part sticking out of the surface of the cabinet or has the part sticking out of the surface of the cabinet as small as possible even if it has the sticking out part and whose structure is simple. 
     According to a first aspect of the present invention, for achieving the object mentioned above, there is provided an inputting device, which is disposed in an opening part of a cabinet. In this, a plane being about parallel to the front surface of the cabinet is defined as an XY plane in an XY orthogonal coordinate system. The inputting device provides an elastic sheet that is made of a material having elasticity and flexibility or having only elasticity and is disposed inside the cabinet in about parallel to the XY plane in a state that the front surface of the elastic sheet faces the rear surface of the front side of the cabinet, a sliding key that is fixed tightly on the front surface of the elastic sheet so that the sliding key is disposed at an about center of the opening part in a state that the sliding key is possible to move in an arbitrary direction on the XY plane, and sensors that at least detect the moved direction of the sliding key on the XY plane. The inputting device, further provides a first control signal generating means that generates a first control signal corresponding to at least the moved direction of the sliding key detected by the sensors. And the first control signal executes the change of the position of a subject to be controlled on a display. 
     According to the present invention, in the first aspect, the sliding key has a rim part whose diameter is larger than that of the opening part, and the sliding key is adhered to the elastic sheet at the rim part, and a space is formed on a part of the rear surface of the cabinet at the position adjoining the opening part, and about the edge part of the rim part of the sliding key is disposed in the space. 
     According to a second aspect of the present invention, there is provided an inputting device, which is disposed in an opening part of a cabinet. In this, a plane being about parallel to the front surface of the cabinet is defined as an XY plane in an XY orthogonal coordinate system. The inputting device provides an elastic sheet that is made of a material having elasticity and flexibility or having only elasticity and is disposed inside the cabinet in about parallel to the XY plane in a state that the front surface of the elastic sheet faces the rear surface of the front side of the cabinet, a surrounding key being a ring shape that is fixed tightly on the front surface of the elastic sheet, a sliding key that is fixed tightly on the front surface of the elastic sheet so that, the sliding key is disposed at an about center of the opening part in a state that the sliding key is possible to move in an arbitrary direction on the XY plane, sensors that at least detect the moved direction of the sliding key on the XY plane, and switches that detect whether the surrounding key is pushed in one direction in the XY directions or not. The inputting device, further provides a first control signal generating means that generates a first control signal corresponding to at least the moved direction of the sliding key detected by the sensors, and a second control signal generating means that generates a second control signal corresponding to the pushed direction of one of the edges of the surrounding key detected by one of the switch. And the first control signal and the second control signal execute the change of the position of a subject to be controlled on a display. 
     According to the present invention, in the second aspect, the sliding key has a rim part whose diameter is larger than that of the opening part, and the sliding key is adhered to the elastic sheet at the rim part, and a space is formed on a part of the rear surface of the surrounding key, and about the edge part of the rim part of the sliding key is disposed in the space. 
     According to the present invention, in the first and second aspect, a magnet is disposed in the sliding key, and the sensors detect the moved direction and the amount of the movement of the sliding key on the XY plane based on the change of the magnetic flux density from the magnet corresponding to the movement of the sliding key. And the sliding key provides a concave part on a part of the surface where the sliding key is adhered to the elastic sheet, and the sliding key is adhered to the elastic sheet by disposing the magnet in the concave part, and the magnet is sealed in the sliding key. Or guides being possible to be recognized optically are disposed on designated positions on the elastic sheet, and the sensors detect the moved direction and the amount of the movement of the sliding key on the XY plane by reading the movements of the guides optically corresponding to the movement of the sliding key. Or a coil is disposed in the sliding key, and the sensors detect the moved direction and the amount of the movement of the sliding key on the XY plane based on the electromotive force generated by the electromagnetic induction by the movement of the sliding key in the magnetic field of designated power formed at the surrounding part of the coil. 
     According to the present invention, in the first and second aspect, the inputting device, further provides a pushing component, which is made of a material that is harder than the elastic sheet and whose friction factor is smaller than that of the elastic sheet, and which is disposed on the rear surface of the elastic sheet at the position corresponding to the sliding key, a contact switch that detects that the sliding key was pushed in the inside direction of the cabinet by disposing at the position facing the pushing component, and a third control signal generating means that generates a third control signal when the pushing component made the contact switch work. And the third control signal executes the selection or the decision of information indicating by a subject to be controlled on a display. And the inputting device, further provides an ignoring means that ignores the third control signal, in case that the amount of the movement of the sliding key on the XY plane is larger than a designated value. And the inputting device, further provides a printed circuit board on which the contact switch is disposed, and a sheet that covers the printed circuit board disposed the contact switch. And the inputting device, further provides a bellows having a ring shape formed in the elastic sheet outside the position where the sliding key is adhered to the elastic sheet. And the inputting device, further provides at least one of projections supporting the sliding key on the rear surface of the elastic sheet. And the inputting device, further provides a concave part formed on the front surface of the sliding key. And the inputting device further provides a nonskid component disposed on the front surface of the sliding key. And the inputting device, further provides one or more projections formed on the front surface of the sliding key. And a group of keys except the sliding key is also formed on the front surface of the elastic sheet in a unified state. 
     According to a third aspect of the present invention, for achieving the object mentioned above, there is provided a mobile terminal. In this, a plane being about parallel to the front surface of a cabinet of a mobile terminal is defined as an XY plane in an XY orthogonal coordinate system. The mobile terminal provides a cabinet providing an opening part, an elastic sheet that is made of a material having elasticity and flexibility or having only elasticity and is disposed inside the cabinet in about parallel to the XY plane in a state that the front surface of the elastic sheet faces the rear surface of the front side of the cabinet, a sliding key that is fixed tightly on the front surface of the elastic sheet so that the sliding key is disposed at an about center of the opening part in a state that the sliding key is possible to move in an arbitrary direction on the XY plane, sensors that at least detect the moved direction of the sliding key on the XY plane, a displaying means that displays information, and a first controlling means that executes first control corresponding to at least the moved direction of the sliding key on the XY plane detected by the sensors. 
     According to the present invention, in the third aspect, the mobile terminal, further provides a pushing component, which is made of a material that is harder than the elastic sheet and whose friction factor is smaller than that of the elastic sheet, and which is disposed on the rear surface of the elastic sheet at the position corresponding to the sliding key, a contact switch that detects that the sliding key was pushed in the inside direction of the cabinet by disposing at the position facing the pushing component, and a third controlling means that executes third control when the pushing component made the contact switch work. And the sensors detect the moved direction and the amount of the movement of the sliding key on the XY plane, and the first controlling means executes the first control corresponding to the moved direction and the amount of the movement of the sliding key. And the mobile terminal, further provides a control stopping means that stops the third controlling means, in case that the amount of the movement of the sliding key on the XY plane is larger than a designated value. And the mobile terminal, further provides a printed circuit board on which the contact, switch is disposed, and a sheet that covers the printed circuit board disposed the contact switch. And the first controlling means executes the change of the position displaying a subject to be controlled on the displaying means. And the third controlling means executes the selection or the decision of information indicating by the subject to be controlled on the displaying means. And the sliding key has a rim part whose diameter is larger than that of the opening part, the sliding key is adhered to the elastic sheet at the rim part, and a space is formed on a part of the rear surface of the cabinet at the position adjoining the opening part, and about the edge part of the rim part of the sliding key is disposed in the space. 
     According to a fourth aspect of the present invention, there is provided a mobile terminal. In this, a plane being about parallel to the front surface of a cabinet of a mobile terminal is defined as an XY plane in an XY orthogonal coordinate system. The mobile terminal provides a cabinet providing an opening part, an elastic sheet that is made of a material having elasticity and flexibility or having only elasticity and is disposed inside the cabinet in about parallel to the XY plane in a state that the front surface of the elastic sheet faces the rear surface of the front side of the cabinet, a surrounding key being a ring shape that is fixed tightly on the front surface of the elastic sheet, a sliding key that is fixed tightly on the front surface of the elastic sheet so that the sliding key is disposed at an about center of the opening part in a state that the sliding key is possible to move in an arbitrary direction on the XY plane, sensors that at least detect the moved direction of the sliding key on the XY plane, a displaying means that displays information, a first controlling means that executes first control corresponding to at least the moved direction of the sliding key on the XY plane detected by the sensors, and a second controlling means that executes second control corresponding to the pushed direction of one of the edge parts of the surrounding key. 
     According to the present invention, in the fourth aspect, the mobile terminal, further provides a pushing component, which is made of a material that is harder than the elastic sheet and whose friction factor is smaller than that of the elastic sheet, and which is disposed on the rear surface of the elastic sheet at the position corresponding to the sliding key, a contact switch that detects that the sliding key was pushed in the inside direction of the cabinet by disposing at the position facing the pushing component, and a third controlling means that executes third control when the pushing component made the contact switch work. And the sensors detect the moved direction and the amount, of the movement of the sliding key on the XY plane, and the first controlling means executes the first control corresponding to the moved direction and the amount of the movement of the sliding key. And the mobile terminal, further provides a control stopping means that stops the third controlling means, in case that the amount of the movement of the sliding key on the XY plane is larger than a designated value. And the mobile terminal, further provides a printed circuit board on which the contact switch is disposed, and a sheet that covers the printed circuit board disposed the contact switch. And the first controlling means and the second controlling means execute the change of the position displaying a subject to be controlled on the displaying means. And the third controlling means executes the selection or the decision of information indicating by the subject to be controlled on the displaying means. And the first controlling means executes the change of the position displaying a first subject to be controlled on the displaying means, and the second controlling means executes the change of the position displaying a second subject to be controlled on the displaying means. And the third controlling means executes the selection or the decision of information indicating by the first or second subject to be controlled on the displaying means. And the sliding key has a rim part whose diameter is larger than that of the opening part, the sliding key is adhered to the elastic sheet at the rim part, and a space is formed on a part of the rear surface of the surrounding key, and about the edge part of the rim part of the sliding key is disposed in the space. 
     According to the present invention, in the third and fourth aspects, a magnet is disposed in the sliding key, and the sensors detect the moved direction and the amount of the movement of the sliding key on the XY plane based on the change of the magnetic flux density from the magnet corresponding to the movement of the sliding key. And the sliding key provides a concave part on a part of the surface where the sliding key is adhered to the elastic sheet, and the sliding key is adhered to the elastic sheet by disposing the magnet in the concave part, and the magnet is sealed in the sliding key. Or guides being possible to be recognized optically are disposed on designated positions on the elastic sheet, and the sensors detect the moved direction and the amount of the movement of the sliding key on the XY plane by reading the movements of the guides optically corresponding to the movement of the sliding key. Or a coil is disposed in the sliding key, and the sensors detect the moved direction and the amount of the movement of the sliding key on the XY plane based on the electromotive force generated by the electromagnetic induction by the movement of the sliding key in the magnetic field of designated power formed at the surrounding part of the coil. 
     According to the present invention, in the third and fourth aspects, the mobile terminal, further provides a bellows having a ring shape formed in the elastic sheet outside the position where the sliding key is adhered to the elastic sheet. And the mobile terminal, further provides at least one of projections supporting the sliding key on the rear surface of the elastic sheet. And the mobile terminal, further provides a concave part formed on the front surface of the sliding key. And the mobile terminal, further provides a nonskid component disposed on the front surface of the sliding key. And the mobile terminal, further provides one or more projections formed on the front surface of the sliding key. And a group of keys except the sliding key is also formed on the front surface of the elastic sheet in a unified state. 
     According to the present invention, at the inputting device and the mobile terminal, a sliding key is fixed tightly (adhered) on an elastic sheet. And the sliding key is moved on a plane being almost parallel to the front surface of a cabinet of the mobile terminal. With this, a structure, in which control corresponding to the moved direction and the amount of the movement of the sliding key is possible, is realized by a structure in which a part sticking out of the cabinet does not exist or the part sticking out of the cabinet is as small as possible even if the part sticking out of the cabinet exists. Therefore, it becomes possible that a subject to be controlled displaying on a display is moved corresponding to the moved direction and the amount of the movement of the sliding key. And since the sliding key is fixed tightly on the elastic sheet, it is not necessary to form a hole in the elastic sheet, therefore, the waterproof and the dustproof can be obtained. Moreover, the sliding key is moved by utilizing the stretch and the contract of a bellows formed in the elastic sheet, its structure can be simple. Therefore, the number of components in the inputting device is decreased and the inputting device is made to be small and thin. And its manufacturing man hour can be decreased. Furthermore, by forming a concave part, a convex part, or a nonskid part on the front surface of the sliding key, its operation ability can be increased. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The objects and features of the present invention will become more apparent from the consideration of the following detailed description taken in conjunction with the accompanying drawings in which: 
         FIG. 1  is a sectional view showing the structure of an inputting device at a first embodiment of the present invention; 
         FIG. 2  is the structure of a metal dome shown in  FIG. 1 ; 
         FIG. 3  is diagrams showing a control system of the inputting device at the first embodiment of the present invention; 
         FIG. 4  is a sectional view showing the structure of a first modified example of the inputting device at the first embodiment of the present invention; 
         FIG. 5  is a sectional view showing the structure of a second modified example of the inputting device at the first embodiment of the present invention; 
         FIG. 6  is a sectional view showing the structure of an inputting device at a second embodiment of the present invention; 
         FIG. 7  is a sectional view showing the structure of an inputting device at a third embodiment of the present invention; 
         FIG. 8  is a sectional view showing a state that a center key was slid at the third embodiment of the present invention; 
         FIG. 9  is a sectional view showing the structure of an inputting device at a fourth embodiment of the present invention; 
         FIG. 10  is a sectional view showing a state that a center key was pushed at the fourth embodiment of the present invention; 
         FIG. 11  is a sectional view showing the structure of an inputting device at a fifth embodiment of the present invention; 
         FIG. 12  is a sectional view showing the structure of an inputting device at a sixth embodiment of the present invention; 
         FIG. 13  is a plane view showing the part of a center key and a surrounding key shown in  FIG. 12 ; 
         FIG. 14  is diagrams showing the control system of the inputting device at the sixth embodiment of the present invention; 
         FIG. 15  is diagrams showing a state that the center key was slid at the sixth embodiment of the present invention; 
         FIG. 16  is a sectional view showing the structure of an inputting device at a seventh embodiment of the present invention; 
         FIG. 17  is a sectional view showing the structure of a modified example of the inputting device at the seventh embodiment of the present invention; 
         FIG. 18  is a plane view showing the structure of a mobile communication terminal used an inputting device at an eighth embodiment of the present invention; 
         FIG. 19  is a plane view and a sectional view showing a key sheet using at an operating section shown in  FIG. 18 ; 
         FIG. 20  is a sectional view showing the structure of the operating section shown in  FIG. 18 ; 
         FIG. 21  is a perspective view showing the structure of a mobile communication terminal used an inputting device at a ninth embodiment of the present invention; 
         FIG. 22  is a sectional view showing the structure of an inputting device shown in  FIG. 21 ; 
         FIG. 23  is a sectional view showing the structure of the inputting device shown in  FIG. 21  at a state that a center key was slid; 
         FIG. 24  is a diagram showing a state that a subject to be controlled was moved on a display shown in  FIG. 21 ; 
         FIG. 25  is a sectional view showing the structure of an inputting device using optical devices at the present invention; and 
         FIG. 26  is a sectional view showing the structure of an inputting device using electromagnetic induction at the present invention. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring now to the drawings, embodiments of the present invention are explained in detail. At the explanation of the embodiments of the present invention, the position of the center key in a no-load state is defined as the origin. 
     Referring to the drawings, an inputting device at a first embodiment of the present invention is explained. 
       FIG. 1  is a sectional view showing the structure of the inputting device at the first embodiment of the present invention. This inputting device is a user interface (UI), which a user operates to move a subject to be controlled on a display in an arbitrary direction. As shown in  FIG. 1 , the inputting device provides a center key  1 , a magnet  2 , a rubber sheet  3 , a pushing component  4 , a metal dome (contact switch)  5 , a resin sheet  6 , Hall elements  7 , a first printed circuit board (PCB)  8 , a second PCB  9 , and an opening part  10 . 
     The center key  1  is a component by which a user executes an input operation. And the user moves a′subject to be controlled on a display by sliding the center key  1  in an about parallel direction to the surface of the cabinet. And a character or an image being designated by the subject to be controlled is selected or decided, by pushing the center key  1 . 
     The magnet  2  is disposed in a concave part  1   a  formed in the center key  1  on the surface where the center key  1  is adhered to the rubber sheet  3 . The rubber sheet  3  is a sheet shaped component made of a material having a large elastic limit, for example, silicone rubber. And the center key  1  is adhered to the surface of the rubber sheet  3  facing the cabinet at the designated position by making the origin as the center. And the magnet  2  is sealed in the concave part  1   a  by adhering the center key  1  to the rubber sheet  3 . The edge parts of the rubber sheet  3  are contacted with the inside part of the cabinet, and the rubber sheet  3  is contacted tightly with the cabinet at these edge parts. 
     The pushing component  4  is adhered to the rubber sheet  3  at the opposite position of the center key  1 , and is formed by a material, which is harder than the rubber sheet  3  and whose friction factor is smaller than the rubber sheet  3 . 
     The metal dome  5  is a switch to detect that the center key  1  was pushed, in the inside direction of the cabinet and is disposed on the first PCB  8  at the position facing the pushing component  4  on the rubber sheet  3 . The resin sheet  6  is formed on the first PCB  8  by covering the metal dome  5  at the position facing the rubber sheet  3 , and covers the metal dome  5  completely. 
     The Hall elements  7  are sensors to detect the magnetic flux density from the magnet  2 , and at least two Hall elements  7  are disposed at the respective designated positions on the surface of the second PCB  9  facing the first PCB  8 . The opening part  10  is formed in the cabinet and has an about circle shape, and limits the sliding amount of the center key  1  disposed at the center of the opening part  10  as its initial state. That is, when the center key  1  was slid until the center key  1  hit the end of the opening part  10 , the center key  1  becomes a state that the center key  1  was slid at the maximum. 
     Next, the structure of the metal dome  5  is explained.  FIG. 2  is the structure of the metal dome  5  shown in  FIG. 1 . In  FIG. 2 , (a) shows a sectional view of the metal dome  5 , (b) shows a perspective view of the metal dome  5 , and (c) shows a state that the metal dome  5  was pushed. As shown in  FIG. 2 , the metal dome  5  has the structure that a dome shaped conductive plate  5   a  is combined with a wiring pattern  5   b  formed on the first PCB  8 . And the metal dome  5  is disposed at the position corresponding to the origin of the center key  1 . As shown in  FIG. 2  ( c ), when the center key  1  was pushed and the pushing component  4  worked to give the force to the conductive plate  5   a  in the direction of the first PCB  8 , the center part of the conductive plate  5   a  touched the wiring pattern  5   b  by that the dome shaped conductive plate  5   a  was deformed. With this, it is detected that the center key  1  was pushed. 
     In this, the conductive plate  5   a  is deformed sharply at the time when the pushing force becomes higher than a designated value, therefore, the user can recognize that the inputting operation is accepted by its click feeling. That is, the metal dome  5  provides a click detecting function. 
       FIG. 3  is diagrams showing a control system of the inputting device at the first embodiment of the present invention. In  FIG. 3  ( a ), the disposition of the Hall elements  7  is shown, in  FIG. 3  ( b ), the structure of the control system that controls the movement of a subject to be controlled is shown, and in  FIG. 3  ( c ), a case that the center key  1  was slid is shown. 
     Referring to  FIG. 3 , the control system of, the inputting device at the first embodiment of the present invention is explained. That is, based on the change of the position of the center key  1  by its sliding movement, a method, which makes a subject to be controlled such as a pointer move, is explained. 
     As shown in  FIG. 3  ( a ), a case in which four Hall elements  7   a ,  7   b ,  7   c , and  7   d  are disposed on the second PCB  9  is explained. As shown in  FIG. 3  ( b ), the movement of the subject to be controlled is controlled by the metal dome  5 , the Hall elements  7   a ,  7   b ,  7   c , and  7   d , and a calculating section  101 , a moving control command generating section  102 , and a controller  103 . 
     The calculating section  101  calculates the moved direction and the amount of the movement of the magnet  2  by making the origin as the reference, based on the magnetic flux density measured at the Hall elements  7   a ,  7   b ,  7   c , and  7   d . This calculation can be executed by an existing method. 
     The moving control command generating section  102  generates the moving control command to the subject to be controlled based on the moved direction and the amount of the movement of the magnet  2  from the origin calculated at the calculating section  101 . That is, the moving control command generating section  102  generates a command, that makes the subject to be controlled on the display move in the direction corresponding to the moved direction of the magnet  2  with the speed corresponding to the amount of the movement of the magnet  2 . 
     The controller  103  controls each of the sections in the inputting device, and makes the subject to be controlled on the display move based on the generated moving control command. That is, the controller  103  changes the position of the subject to be controlled on the display. Further, the controller  103  processes the selection or the decision of the information pointed by the subject to be controlled on the display, when the metal dome  5  was pushed and became the conductive state. 
     By providing the control system mentioned above, the subject to be controlled such as a pointer can be moved on the display based on the changes of the direction and the amount of movement of the magnet  2  in the center key  1 . 
     As shown in  FIG. 3  ( c ), when the center key  1  was slid, the magnet  2  in the center key  1  was also moved, therefore, the magnetic flux density detected by the Hall elements  7   a ,  7   b ,  7   c , and  7   d  was also changed. Consequently, the calculating section  101  can calculate the moved direction and the amount of the movement of the center key  1 , based on the signals of the changes of the magnetic flux density detected by the Hall elements  7   a ,  7   b ,  7   c , and  7   d . With this, the subject to be controlled on the display can be moved based on the moved direction and the amount of the movement of the center key  1 . 
     In this, it is possible that the calculating section  101  calculates only the moved direction of the center key  1  based on the signals from the Hall elements  7 . In this case, the moving control command generating section  102  generates the moving control command to the subject to be controlled, based on the moved direction of the magnet  2  from the origin. That is, the moving control command generating section  102  generates a command that makes the subject to be controlled on the display move in the direction corresponding to the moved direction of the magnet  2 . This operation can be used, when it is required that only the moved direction is used. For example, as the subject to be controlled, a cursor is used, and the user checks the menu in the mobile communication terminal. 
     The structure of the control system shown in  FIG. 3  ( b ) at the first embodiment of the present invention can be applied to the other embodiments of the present invention. 
     Next, the operation of the inputting device at the first embodiment of the present invention is explained. When a user slid the center key  1  in an arbitrary direction, the rubber sheet  3  stretches by generating the elastic deformation. And the pushing component  4  slides on the resin sheet  6  disposed on the metal dome  5  in a state that the pushing component  4  contacts with the resin sheet  6 . At this time, since the metal dome  5  is covered with the resin sheet  6 , the pushing component  4  is not caught by the edge of the metal dome  5 . The pushing component  4  is formed by a material, which is harder than the rubber sheet  3  and whose friction factor is smaller than the rubber sheet  3 , therefore, the pushing component  4  slides smoothly on the resin sheet  6 . The center key  1  can be moved until the center key  1  hits the wall of the opening part  10 . 
     When the center key  1  is moved, the magnet  2  sealed in the center key  1  is also moved with the center key  1 . Therefore, the subject to be controlled on the display is moved based on the moved direction and the amount of the movement of the magnet  2  from the origin, by the operation of the control system mentioned above. 
     When the user stops the sliding operation of the center key  1  and releases the center key  1 , the center key  1  returns to the origin automatically by the elasticity of the rubber sheet  3 . 
     In this, there is a possibility that a user pushes the center key  1  by mistake while the user is sliding the center key  1 . By considering this, in case that the amount of the movement of the center key  1  from the origin is larger than a designated value in the almost parallel direction to the surface of the cabinet, it is desirable that the controller  103  ignores the operation that the metal dome  5  becomes a conductive state. 
       FIG. 4  is a sectional view showing the structure of a first modified example of the inputting device at the first embodiment of the present invention. Referring to  FIG. 4 , the structure of the first modified example of the inputting device at the first embodiment of the present invention is explained. 
     As shown in  FIG. 4 , the inputting device does not provide the metal dome  5 , the resin sheet  6 , and the first PCB  8 . And the pushing component  4  slides on the Hall elements  7  disposed on the second PCB  9 . 
     In this structure, the click detecting function by the metal dome  5  is not provided. However, the distance between the magnet  2  and the Hall elements  7  becomes shorter than that at the first embodiment, therefore, the detecting accuracy of the moved direction and the amount of the movement of the center key  1  can be increased. Further, in this structure, the inputting device can be made to be smaller and thinner, because the metal dome  5  is not provided. 
       FIG. 5  is a sectional view showing the structure of a second modified example of the inputting device at the first embodiment of the present invention. Referring to  FIG. 5 , the structure of the second modified example of the inputting device at the first embodiment of the present invention is explained. 
     As shown in  FIG. 5 , the magnet  2  is disposed in a concave part  1   b  formed from the upper surface of the center key  1 , and a lid part  1   c  is disposed on the magnet  2  and the edge part of the center key  1 . With this structure, the magnet  2  is sealed in the center key  1 . 
     By this structure, the area, which the center key  1  contacts with the rubber sheet  3 , can be made to be large. Therefore, the adhering strength of the center key  1  to the rubber sheet  3  can be increased. Further, by making the material of the lid part  1   c  different from that of the center key  1 , the color feeling and the touch feeling of the center key  1  can be changed, and the degree of freedom at its cosmetic designing can be increased. 
     The first and second modified examples shown in  FIGS. 4 and 5  at the first embodiment of the present invention can be applied to the other embodiments of the present invention. 
     At the structures of the first embodiment of the present invention mentioned above, the first PCB  8  and the second PCB  9  are always isolated from the outside of the cabinet by using the rubber sheet  3 . Therefore, the effects of the waterproof and the dustproof can be obtained regardless of the position of the center key  1 . 
     As mentioned above, according to the inputting device at the first embodiment of the present invention, the moving control command to the subject to be controlled is generated, based on the position of the magnet  2  sealed in the center key  1 . Therefore, the moving control command can be generated in an arbitrary direction on the display. 
     Moreover, according to the inputting device at the first embodiment of the present invention, the structure is a simple structure, in which the center key  1  is adhered to the rubber sheet  3 . Therefore, the number of components is decreased and its assembling man hour is also decreased, and the inputting device can be made to be small and thin. 
     Furthermore, according to the inputting device at the first embodiment of the present invention, the structure of the inputting device can be made to be a structure, in which a part sticking out of the surface of the cabinet does not exist or the part sticking out of the surface of the cabinet is made to be as small as possible even if it has the sticking out part. And the structure can provide the waterproof and the dustproof. 
     Next, an inputting device at a second embodiment of the present invention is explained.  FIG. 6  is a sectional view showing the structure of the inputting device at the second embodiment of the present invention. As shown in  FIG. 6 , at the second embodiment of the present invention, the center key  1  provides a skirt part  11  having an about ring shape, and the cabinet has a space in which the skirt part  11  of the center key  1  slides. And the other parts are equal to those at the first embodiment. 
     The skirt part  11  is formed in the center key  1  at the side adhering to the rubber sheet  3 , and increases the area adhering to the rubber sheet  3 , and prevents the center key  1  from dropping out of the cabinet. The maximum diameter of the skirt part  11  is larger than the diameter of the opening part  10 , therefore, even when the center key  1  is slid to its maximum limit (the center key  1  is slid until the center key  1  hits the wall of the opening part  10 ), the rubber sheet  3  is not exposed to the outside of the cabinet. This size of the skirt part  11  is desirable. The rim part of the skirt part  11  is disposed in the space between the cabinet and the rubber sheet  3 , therefore, even when the center key  1  is separated from the rubber sheet  3  by that the adhesive between them is peeled off, the center key  1  is not dropped from the cabinet. 
     Further, by providing the skirt part  11 , the rubber sheet  3  can be prevented from damaging by the influence of foreign articles, therefore, the waterproof and the dustproof can be kept in a good state. 
     As mentioned above, according to the inputting device at the second embodiment of the present invention, by providing the skirt part  11  in the center key  1 , the center key  1  can be prevented from dropping out of the cabinet, moreover, the rubber sheet  3  can be prevented from damaging, furthermore, the waterproof and the dustproof can be obtained. 
     Next, an inputting device at a third embodiment of the present invention is explained.  FIG. 7  is a sectional view showing the structure of the inputting device at the third embodiment of the present invention. As shown in  FIG. 7 , at the third embodiment of the present invention, a bellows  31  is provided in the rubber sheet  3  in a state that the bellows  31  stretches and contracts freely. And the other parts are equal to those at the second embodiment. In this, the bellows  31  is formed in the rubber sheet  3  at the outside position of the adhering area with the center key  1  in a ring state. 
       FIG. 8  is a sectional view showing a state that the center key  1  was slid at the third embodiment of the present invention. As shown in  FIG. 8 , a part of the bellows  31  in the slid direction of the center key  1  was contracted and a part of the bellows  31  in the opposite direction was stretched. Consequently, the force making the center key  1  return to the origin works by that bellows  31  stretches and contracts. 
     Furthermore, the center key  1  can be slid largely because the bellows  31  stretches and contracts. 
     In case that the bellows  31  is not provided, the force making the center key  1  return to the origin must be made to be a large value when the amount of the slide is large. Therefore, its operation ability may be decreased. 
     However, at the third embodiment of the present invention, at the time when the center key  1  is slid, the operating load can be decreased by providing the bellows  31 . Therefore, even when the center key  1  is slid largely, the good operation ability can be obtained. 
     Next, an inputting device at a fourth embodiment of the present invention is explained.  FIG. 9  is a sectional view showing the structure of the inputting device at the fourth embodiment of the present invention. As shown in  FIG. 9 , at the fourth embodiment of the present invention, a convex part  32  is provided in the rubber sheet  3  at the position facing the first PCB  8 . And the other parts are equal to those at the third embodiment. 
     The convex part  32  has almost the same height as the gap between the rubber sheet  3  and the first PCB  8  has, and is disposed at the position outside the metal dome  5 , in order not to prevent the center key  1  from sliding smoothly. 
     The convex part  32  can be formed with the rubber sheet  3  by unifying them, or can be adhered to the rubber sheet  3 . However, the material of the convex part  32  is desirable to be softer than that of the pushing component  4 . Furthermore, the convex part  32  can be formed in a ring shape, or the convex parts  32  can be formed by disposing plural projections. 
     In case that a user slides the center key  1 , the convex part  32  slides on the resin sheet  6  by supporting the center key  1 . Therefore, the convex part  32  prevents the metal dome  5  from being made to be a conductive state by an operation that the user pushes the center key  1  by mistake. 
       FIG. 10  is a sectional view showing a state that the center key  1  was pushed at the fourth embodiment of the present invention. As shown in  FIG. 10 , when a user pushed the center key  1 , the convex part  32  was deformed by that the convex part  32  was pressed by the center key  1  and the first PCB  8 . With this, the metal dome  5  can be worked. 
     In case that the convex part  32  is not provided, the center key  1  must be supported by the elasticity of the rubber sheet  3 . Therefore, when the elasticity was decreased by deteriorating the rubber sheet  3 , the force making the center key  1  return to the origin is decreased. Further, a possibility, which the metal dome  5  is made to be in a conductive state by mistake by weakening the force supporting the center key  1 , may occur. At the fourth embodiment of the present invention, an error operation caused by the deterioration of the rubber sheet  3  can be prevented by supporting the center key  1  by the convex part  32 . 
     Next, an inputting device at a fifth embodiment of the present invention is explained.  FIG. 11  is a sectional view showing the structure of the inputting device at the fifth embodiment of the present invention. As shown in  FIG. 11 , at the fifth embodiment of the present invention, a concave part  12  is provided in the upper surface of the center key  1 . And the other parts are equal to those at the fourth embodiment. 
     At the inputting device of the fifth embodiment of the present invention, since the concave part  12  is provided in the center key  1 , a finger of the user can be caught by the edge of the concave part  12 , and the user can easily apply the force in the sliding direction of the center key  1 . With this, since the user can easily apply the force in the sliding direction, it can be prevented that the user pushes the center key  1  by mistake while the user is sliding the center key  1 . 
     As mentioned above, according to the inputting device at the fifth embodiment of the present invention, the operation ability of the center key  1  can be increased. Further, an error operation caused by pushing the center key  1  by mistake can be decreased. In this, the shape of the concave part  12  is not limited to the shape shown in  FIG. 11 , a smooth curved surface can be used as the shape of the concave part  12 . 
     Next, an inputting device at a sixth embodiment of the present invention is explained.  FIG. 12  is a sectional view showing the structure of the inputting device at the sixth embodiment of the present invention. As shown in  FIG. 12 , at the sixth embodiment of the present invention, a surrounding key  20  is provided at the position surrounding the center key  1 . And the other parts are equal to those at the fifth embodiment. In  FIG. 12 , pushing components  4   a  and  4   b , metal domes  5   z  and  5   y , and a thin part  201 , which are provided for the surrounding key  20 , are explained later. 
       FIG. 13  is a plane view showing the part of the center key  1  and the surrounding key  20  shown in  FIG. 12 . As shown in  FIG. 13 , the surrounding key  20  has an about ring shape looking from the front. And direction indicating sections  20   a ,  20   b ,  20   c , and  20   d  are formed in the surrounding key  20  at the respective positions in the length directions and the width directions corresponding to the directions on the display. The surrounding key  20  is adhered to the cabinet side surface of the rubber sheet  3  at the designated position: 
     Pushing components  4   a ,  4   b ,  4   c , and  4   d  are formed on the rear surface of the rubber sheet  3  at the positions corresponding to the direction indicating sections  20   a  to  20   d . The pushing components  4   a  to  4   d  can be formed by unifying with the rubber sheet  3 , or can be formed by adhering to the rubber sheet  3  by making the pushing components  4   a  to  4   d  separately. 
     Metal domes  5   z ,  5   y ,  5   x , and  5   w  are formed on the first PCB  8  at a state that the metal domes  5   z  to  5   w  are covered with the resin sheet  6  at the positions corresponding to the pushing components  4   a  to  4   d . That is, the surrounding key  20  is a pushing key. 
     As shown in  FIG. 12 , the opening part  10  is formed between the center key  1  and the surrounding key  20 . Further, a thin part  201  is formed on the outside surface of each of the direction indicating sections  20   a  to  20   d , and the user can easily operate the center key  1  and the direction indicating sections  20   a  to  20   d  in the surrounding key  20 . 
     Next, the control system of the inputting device at the sixth embodiment of the present invention is explained.  FIG. 14  is diagrams showing the control system of the inputting device at the sixth embodiment of the present invention. In  FIG. 14  ( a ), the disposition of the Hall elements  7  is shown, and in  FIG. 14  ( b ), the structure of the control system that controls the movement of a subject to be controlled is shown. 
     Referring to  FIG. 14 , the control system of the inputting device at the sixth embodiment of the present invention is explained. That is, based on the change of the position of the center key  1  by its sliding movement, a method, which makes a subject to be controlled such as a pointer move, is explained. 
     As shown in  FIG. 14  ( a ), a case in which four Hall elements  7   a ,  7   b ,  7   c , and  7   d  are provided on the second PCB  9  is explained. As shown in  FIG. 14  ( b ), the movement of the subject to be controlled is controlled by the metal dome  5 , the Hall elements  7   a  to  7   d , the metal domes  5   z  to  5   w  disposed corresponding to the direction indicating sections  20   a  to  20   d , a calculating section  111 , a moving control command generating section  112 , and a controller  113 . 
     The function of the calculating section  111  is the same as that of the calculating section  101  at the first embodiment of the present invention. The function of the controller  113  is the same as that of the controller  103  at the first embodiment of the present invention. 
     The moving control command generating section  112  generates the moving control command to the subject to be controlled based on the moved direction and the amount of the movement of the magnet  2  from the origin calculated at the calculating section  111 . That is, the moving control command generating section  112  generates a command that makes the subject to be controlled on the display move in the direction corresponding to the moved direction of the magnet  2  with the speed corresponding to the amount of the movement of the magnet  2 . 
     In case that each of the direction indicating sections  20   a  to  20   d  was pushed, the moving control command generating section  112  generates a command that makes the subject to be controlled such as a cursor move in the direction corresponding to the pushed one of the direction indicating sections  20   a  to  20   d.    
     The controller  113  controls each of the sections in the inputting device, and makes the subject to be controlled on the display move based on the generated moving control command. 
     That is, the controller  103  changes the position of the subject to be controlled on the display. Further, the controller  103  processes the selection or the decision of the information pointed by the subject to be controlled on the display, when the metal dome  5  is pushed and becomes a conductive state. 
     By providing the control system mentioned above, the subject to be controlled such as a cursor can be moved on the display based on the changes of the direction and the amount of movement of the magnet  2  in the center key  1 . Further, the subject to be controlled can be moved in the direction corresponding to the pushed direction indicating section. 
       FIG. 15  is diagrams showing a state that the center key  1  was slid at the sixth embodiment of the present invention.  FIG. 15  ( a ) shows a plane view of the part of the center key  1  and the surrounding key  20  at the time when the center key  1  was slid. And  FIG. 15  ( b ) shows a sectional view of the inputting device at the time when one of the direction indicating sections  20   a  to  20   d  was pushed at the sixth embodiment of the present invention. 
     As shown in  FIG. 15  ( a ), when the center key  1  was slid, the magnet  2  in the center key  1  was also moved, therefore, the magnetic flux density detected by the Hall elements  7   a ,  7   b ,  7   c , and  7   d  was also changed. Consequently, the calculating section  111  can calculate the moved direction and the amount of the movement of the center key  1 , based on the signals of the changes of the magnetic flux density detected by the Hall elements  7   a ,  7   b ,  7   c , and  7   d . With this, the controller  113  can move the subject to be controlled on the display based on the moved direction and the amount of the movement of the center key  1 . 
     As shown in  FIG. 15  ( b ), in case that one of the direction indicating sections  20   a  to  20   d  was pushed, the corresponding one of the pushing components  4   a  to  4   d  makes the corresponding one of the metal domes  5   z  to  5   w  a conductive state. Therefore, the moving control command generating section  112  generates a command that makes the subject to be controlled move in the direction corresponding to the pushed direction indicating section. With this, the controller  113  can move the subject to be controlled in the direction that one of the direction indicating sections in the surrounding key  20  was pushed. In this, in  FIG. 15  ( b ), a state that the direction indicating section  20   a  was pushed is shown. 
     The center key  1  moves the subject to be controlled such as a cursor corresponding to the amount of the slide. However, in case that the subject to be controlled is moved by using the surrounding key  20 , it is possible that the subject to be controlled is moved by a designated amount at each time when one of the direction indicating sections is pushed. Therefore, in case that it is not necessary to move the subject to be moved in an arbitrary direction with an arbitrary speed or in an arbitrary direction, its operation ability can be increased by using the surrounding key  20 . That is, in case that a subject to be controlled is moved in one of the length directions and the width directions, the surrounding key  20  can be used effectively. 
     For example, when the subject to be controlled is a cursor on a text screen, in many cases, it is not necessary that the cursor is moved in an arbitrary direction with an arbitrary speed. In this case, the user can surely move the cursor by the desiring number of characters, by making the cursor move using the surrounding key  20 . 
     At the explanation mentioned above, by using the center key  1  and the surrounding key  20 , the moving control for the one subject to be controlled is explained. However, it is possible that one function is allocated to the center key  1  and other function is allocated to the surrounding key  20 . For example, the moving control for a pointer is executed by the center key  1  and the moving control for a cursor is executed by the surrounding key  20 , this operation is possible. Further, it is possible that an operation except the moving control is allocated to the surrounding key  20 . For example, a function showing a menu in the mobile communication terminal can be allocated to one of the direction indicating sections  20   a  to  20   d  in the surrounding key  20 . 
     Next, an inputting device at a seventh embodiment of the present invention is explained.  FIG. 16  is a sectional view showing the structure of the inputting device at the seventh embodiment of the present invention. As shown in  FIG. 16 , at the seventh embodiment of the present invention, a nonskid component  13  is provided at the concave part  12  in the center key  1 . And the other parts are equal to those at the sixth embodiment. 
     The nonskid component  13  is formed by a material whose friction factor is larger than that of the center key  1 , and is fixed in the concave part  12  in the center key  1  by adhering or embedding. In this, the nonskid component  13  can be formed by the same material of the center key  1 , in this case, the surface of the nonskid component  13  is made to be coarse and the friction factor is made to be larger than that of the center key  1 . 
     As mentioned above, according to the inputting device at the seventh embodiment of the present invention, the nonskid component  13  is formed at the upper surface of the center key  1 , therefore, when a user slides the center key  1 , slipping the finger of the user can be prevented. Consequently, the operation ability of the center key  1  can be increased and an error operation can be decreased. Further, by using a different material from the center key  1  for the nonskid component  13 , the color feeling and the touch feeling of the center key  1  can be changed. 
     And as shown in  FIG. 16 , when the nonskid component  13  is embedded in the concave part  12  in the center key  1 , the nonskid component  13  can be prevented from scraping off at the time when the user slides the center key  1 . 
     At the seventh embodiment of the present invention, the nonskid component  13  is disposed only in the center key  1 , however, the nonskid component can be disposed on the surface of the surrounding key  20 . 
       FIG. 17  is a sectional view showing the structure of a modified example of the inputting device at the seventh embodiment of the present invention. As shown in  FIG. 17 , on the concave part  12  in the center key  1 , convex components  13 ′ instead of the nonskid component  13  are disposed. In this, it is possible that at least one convex component is disposed on the concave part  12  in the center key  1 . In this case, when the user slides the center key  1 , slipping the finger of the user is decreased and the operation ability of the center key  1  is increased and an error operation can be decreased. 
     As mentioned above, the operation ability can be increased and the error operation can be decreased by disposing the nonskid component  13  or the convex component(s)  13 ′ at the concave part  12  in the center key  1 . These effects can be obtained by not disposing the concave part  12 . That is, the operation ability can be increased and the error operation can be decreased by disposing at least one of the concave part  12 , the nonskid component  13 , and the convex component(s)  13 ′ in the center key  1 . 
     Next, a mobile communication terminal used an inputting device at an eighth embodiment of the present invention is explained.  FIG. 18  is a plane view showing the structure of the mobile communication terminal used the inputting device at the eighth embodiment of the present invention. As shown in  FIG. 18 , this mobile communication terminal provides a displaying section  40  and an operating section  50 , and the displaying section  40  and the operating section  50  are connected with a hinge (not shown). An inputting device  500  is provided in the operating section  50 . This inputting device  500  is the same one mentioned at the sixth embodiment of the present invention. The displaying section  40  provides a display  41  in which characters and images are displayed and a speaker (not shown) and so forth. 
     At the explanation of the mobile communication terminal at the eighth embodiment of the present invention, the reference numbers for the components are different from those used at the sixth embodiment. However, when each of the components has the same name, the component having the same has the same function regardless of the reference number. For example, the center key  1  is used at the sixth embodiment, however, at the eighth embodiment, a center key  501  is used. In this case, the center key  1  and the center key  501  have the same name, therefore, both the center keys have the same function. 
       FIG. 19  is a plane view and a sectional view showing a key sheet  503  using at the operating section  50  shown in  FIG. 18 . The key sheet  503  has almost the same shape as the operating section  50  has looking from the front. On the front surface of the key sheet  503 , the center key  501 , a surrounding key  520 , and a group of keys  533  are disposed. And reference numbers  504 ,  504   a , and  534  are pushing components, and they are formed under respective keys. And the reference number  531  shows a bellows and the reference number  532  shows a convex part. 
       FIG. 20  is a sectional view showing the structure of the operating section  50  shown in  FIG. 18 . As shown in  FIG. 20 , metal domes  505 ,  505   a , and  505   b  are disposed on a first PCB  508  at the positions corresponding to the respective pushing components  504 ,  504   a , and  534 . And the first PCB  508  disposed the metal domes  505 ,  505   a , and  505   b  are covered with a resin sheet  506  at the position that the first PCB  508  faces a rubber sheet  503 . And Hall elements  507  are disposed on a second PCB  509  at the position that the second PCB  509  faces the first PCB  508 . At least the edge of the rubber sheet  503  is tightly contacted with the inside surface of the upper cabinet by that a frame component  540  presses the rubber sheet  503 . The frame component  540  has a length being a little shorter than the inside length of the upper cabinet and the lower cabinet, and is disposed on the inside side surfaces of the upper cabinet and the lower cabinet. With this disposition, the frame component  540  presses the rubber sheet  503  in the front direction of the upper cabinet. With the structure mentioned above, the waterproof and the dustproof structure for not only the inputting device  500  but also all the keys of the operating section  50  can be realized. In this, at the explanation mentioned above, the pushing components  504 ,  504   a , and  534 , and the metal domes  505 ,  505   a , and  505   b  were explained, however, as shown in  FIGS. 19 and 20 , a pushing component and a metal dome are provided for each of all keys in the group of keys  533 , further, as mentioned at the sixth embodiment, each of the direction indicating sections provides a pushing component and a metal dome. 
     At the mobile communication terminal at the eighth embodiment of the present invention, the inputting device at the sixth embodiment of the present invention was provided. However, the mobile communication terminal can provide any of the inputting devices mentioned at the first to fifth embodiments of the present invention. 
     As mentioned above, according to the mobile communication terminal at the eighth embodiment of the present invention, a subject to be controlled such as a cursor can be moved in an arbitrary direction with an arbitrary speed on the display  41 . Moreover, a part sticking out of the surface of the cabinet is not formed, or even if the part sticking out of the surface of the cabinet exists, the part can be made to be as small as possible. Furthermore, the waterproof and the dustproof structure can be realized. And since the number of components can be decreased, the mobile communication terminal can be small and thin, and its manufacturing can be simple. 
     Next, a mobile communication terminal used an inputting device at a ninth embodiment of the present invention is explained.  FIG. 21  is a perspective view showing the structure of the mobile communication terminal used the inputting device at the ninth embodiment of the present invention. In  FIG. 21 , in order to show the inside of the mobile communication terminal, a part of the mobile communication terminal is cut. 
     As shown in  FIG. 21 , a mobile communication terminal  60  provides a display  61 , a group of keys  62 , an inputting device  600 , and a first PCB  608 . And the first PCB  608  is shown from the cut part. Characters and images are displayed on the display  61 . The group of keys  62  is the same as an existing mobile communication terminal has, for example, each of the group of keys  62  is a number key. The first PCB  608  is an electronic circuit board in which many components are mounted, and works to realize mobile communication. 
       FIG. 22  is a sectional view showing the structure of the inputting device  600  shown in  FIG. 21 . As shown in  FIG. 22 , the inputting device  600  provides a center key  601 , a magnet  602 , a rubber sheet  603 , a pushing component  604 , a metal dome  605 , Hall elements  607 , the first PCB  608 , and a circuit  610  for executing calculation. At the ninth embodiment of the present invention, a second PCB is not shown. 
     As shown in  FIG. 22 , a concave part  6011  is formed in the center key  601  on the surface of the center key where the center key  601  is adhered to the rubber sheet  603 , and the magnet  2  is disposed in the concave part  6011 . The magnet  602  is sealed in the concave part  6011  by that the center key  601  is adhered to the rubber sheet  603 . 
     The rubber sheet  603  is formed by a material having elasticity and flexibility or having only elasticity, and has an H shape whose upper edge is adhered to the inside surface of the cabinet. And the center key  601  and key tops (not shown) of the group of keys  62  are disposed on the rubber sheet  603  at the positions where the rubber sheet  603  faces the rear surface of the cabinet. And the pushing component  604  corresponding to the center key  601  and pushing components (not shown) corresponding to the group of keys  62  are disposed on the rear surface of the rubber sheet  603 . At the ninth embodiment of the present invention, the second PCB  608  is fixed to the cabinet, and the cabinet is actually divided into the upper and lower cabinets. 
     The pushing component  604  is formed by a material, which is harder than the rubber sheet  603  and whose friction factor is smaller than the rubber sheet  603 . The metal dome  605  is disposed on the PCB  608  at the position facing the rubber sheet  603 , and the Hall elements  607  are disposed on the rear surface of the first PCB  608  at the position corresponding to the metal dome  605 . And the circuit  610  is also disposed on the rear surface of the first PCB  608 . The circuit  610  moves a subject to be controlled on the display  61  corresponding to the moved direction and the amount of the movement of the center key  601 . That is, the circuit  610  changes the displaying position of the subject to be controlled on the display  61 . 
     At the explanation of the ninth embodiment of the present invention, the reference numbers for the components are different from those used at the embodiments of the inputting device. However, when each of the components has the same name, the component having the same has the same function regardless of the reference number. 
       FIG. 23  is a sectional view showing the structure of the inputting device  600  shown in  FIG. 21  at a state that the center key  601  was slid. As shown in  FIG. 23 , when the center key  601  was slid, the magnet  602  was also moved, and the relation of the position between the magnet  602  and the Hall elements  607  was also changed. Therefore, the magnetic flux density detected by the Hall elements  607  was changed. The circuit  610  generates a moving control command to the subject to be controlled (pointer) based on the signal by the change of the magnetic flux density. 
       FIG. 24  is a diagram showing a state that a subject to be controlled was moved on the display  61  shown in  FIG. 21 . As shown in  FIG. 24 , by the moving control command generated at the circuit  610 , a pointer  611  (subject to be controlled) on the display  61  was moved. 
     As mentioned above, according to the mobile communication terminal  60  at the ninth embodiment of the present invention, the subject to be controlled on the display  61  can be moved by sliding the center key  601 . The circuit  610  can generates a moving control command to the subject to be controlled based on the moved direction and the amount of the movement of the center key  601 . Therefore, the subject to be controlled on the display  61  can be moved in an arbitrary direction with an arbitrary speed by operating the center key  601 . 
     And according to the mobile communication terminal  60  at the ninth embodiment of the present invention, the magnet  602  is sealed in the center key  601 , therefore, the volume of the center key  601  is not increased. Moreover, the center key  601  is adhered to the rubber sheet  603 , therefore, the mobile communication terminal can be manufactured easily by disposing the center key  601  at a designated position on the rubber sheet  603 . Furthermore, it is not necessary to form a hole in the rubber sheet  603 , therefore, the waterproof and the dustproof can be obtained. 
     As mentioned above, the embodiments of the present invention are explained in detail. However, the embodiments of the present invention are suitable examples, and the present invention is not limited to the embodiments mentioned above. 
     For example, at the embodiments of the inputting device, the shapes of the components such as the center key  1  and the surrounding key  20 , of which the inputting device is composed, are not limited to those shown in the drawings. For example, each of the shapes of the center key  1  and the surrounding key  20  can be a prism or an elliptic cylinder. And the opening part  10  is not limited to an about circle shape, any shape can be used for the opening part  10 . 
     And at the embodiments of the inputting device, the moved direction and the amount of the movement of the center key  1  are detected by the magnet  2  and the Hall elements  7 , however, the detection is not limited by the components mentioned above. For example, the change of the magnetic flux density corresponding to the sliding movement of the center key  1  can be detected by using reed switches instead of using the Hall elements  7 . 
       FIG. 25  is a sectional view showing the structure of an inputting device using optical devices at the present invention. As shown in  FIG. 25 , optical guides  2 ′, which can be recognized optically, are disposed on the rubber sheet  3  at the positions facing the first PCB  8 , and the changes of the positions of the optical guides  2 ′ are detected by photoelectric conversion devices  7 ′ such as CCDs and CMOSs disposed on the first PCB  8 . This structure is possible. 
       FIG. 26  is a sectional view showing the structure of an inputting device using electromagnetic induction at the present invention. As shown in  FIG. 26 , a coil  2 ″ instead of the magnet  2  is disposed in the center key  1 , and plural coils  7 ″ instead of the Hall elements  7  are disposed on the second PCB  9 . With this structure, the sliding movement of the center key  1  can be detected by the electromagnetic induction. This structure is also possible. 
     Moreover, at the embodiments of the mobile communication terminal used an inputting device, as shown in  FIGS. 18 and 21 , the mobile communication terminal can be a foldable type or cannot be the foldable type. In case that the mobile communication terminal is a foldable type, when a part sticking out of the upper cabinet exists, the part prevents the mobile communication terminal from folding. Therefore, the present invention can be used effectively for the foldable type mobile communication terminal. 
     At the embodiments of the present invention, as a mobile terminal, the mobile communication terminal is used. However, the present invention can be applied to mobile terminals such as PDAs and notebook computers. Furthermore, the present invention can be applied to not mobile terminals such as remote control units, electronic dictionaries, and ordinary PCs. 
     As mentioned above, according to the embodiments of the present invention, an inputting device and a mobile terminal used this inputting device, in which a subject to be controlled such as a pointer and a cursor can be formed on a display in an arbitrary direction with an arbitrary speed, are realized. Moreover, the inputting device can provide the waterproof and the dustproof. Furthermore, the inputting device is able to have a structure, which does not have a part sticking out of the surface of the cabinet or has the part sticking out of the surface of the cabinet as small as possible even if it has the sticking out part. And the structure of the inputting device can be made to be simple. 
     While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by those embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention.