JPH07281806A - Input/output device - Google Patents

Abstract

PURPOSE:To provide an input/output device on which adequate input operation can be performed according to how the device is held when used. CONSTITUTION:An input button group 1 consists of plural input buttons which are arranged so that a combination of positions to be pressed corresponding to the respective fingers is different corresponding to how the device is held in a hand, and outputs an input signal corresponding to pressed input buttons. An input signal conversion part 2 holds plural kinds of coordinate table of the input signal and input codes, and converts the input signal reported from the input button group 1 into input codes according to a coordinate table. An input decision part 3 requests the input signal conversion part 2 to switch the coordinate table when the input code reported from the input signal conversion part 2 is a specific input code generated by the changing of the way of hand holding. And, the coordinates between the operation of the respective fingers and input codes is made to not change with the way of holding the device when the device is held in the hand.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input / output device equipped with an input means that a user presses with a plurality of fingers.

[0002]

2. Description of the Related Art In recent years, many home electric appliances and home game machines have a remote controller as an input device for them. For such a remote control device having a large number of buttons, it is difficult to perform input using the opposite operating hand as it is created assuming the holding direction and operating hand. Met.

Further, in recent years, a lot of hand-held game machines and video recording devices, which are integrated with display means such as a liquid crystal display and operation buttons, and which can be held and operated by hand, have been developed. In many of such devices, the hand-held direction, the operating hand, and the display direction on the display are aligned and fixed. However, a handheld device that can be operated by hand is used even when one hand is closed, for example, when it is used while being caught in the sling of a train or when carrying luggage with one hand. It is easy to envision the situation. In such a case, in the case where the display and the plurality of input button groups are integrally formed on the device, since the operation is formed with the intention of being suitable for only the right hand or only the left hand, it is not always necessary to operate on the arm side. Not always possible,
In addition, it was difficult to change the hand to the other hand and use it depending on the situation. Also, due to portability and price restrictions, the display is limited to small ones.Therefore, there is a desire to use this horizontally or vertically so that it can be used widely depending on the display target. However, such use was difficult because the Conventionally, in order to respond to such use,
It has been practiced to connect the display and the operation button with a movable part or to make them removable.

Further, a method of providing a specific button such as a display direction reversing button and changing the display direction by pressing this button is disclosed in, for example, Japanese Patent Application No. 62-79629 and Japanese Patent Application No. 3-126470. Is disclosed in.

[0005]

However, in a conventional input / output device in which an operation button to be pressed by a finger is integrally formed, and particularly a device having a large number of buttons and requiring complicated button operation, an operation is required. There is a problem that the hand is fixed and cannot be operated with the finger of the forearm, and the one that can be operated with one hand cannot be switched between right and left depending on the situation.

Further, in a portable input / output device in which a display and operation buttons are integrally formed, and in which the holding direction of the hand, the operating hand, and the display direction on the display are fixed so as to be the same, it is possible to fix the hand arm. There are problems that it is not possible to operate with a finger, what can be operated with one hand cannot be switched between left and right depending on the situation, and it is not possible to switch between horizontal and vertical use of the display.

Further, in the input / output device having a structure in which the display and the operation button are connected to each other by a movable part or which has a detachable shape, it requires a high cost to form and assemble the movable part and the detachable part. There is a problem that the parts are liable to cause deterioration and failure, and that it takes a lot of effort to move or remove them even during use. Further, in the input / output device having a structure in which the display direction is changed by the display direction inversion button, the positional relationship between the display direction and the input button is changed when the display direction is changed. Had a problem that it was difficult.

The present invention has been made in view of the above circumstances, and is an input / output device in which a group of operation buttons to be pressed by a finger is integrally formed, and a suitable input operation can be performed depending on how to hold it in use. An object is to provide an input / output device that can be used. Further, the present invention is a portable and handheld input / output device in which a display and an operation button are integrally formed, and performs a suitable input operation and display according to how to hold it when in use. It is an object of the present invention to provide an input / output device that can be used.

A further object of the present invention is to provide an input / output device which can automatically obtain a suitable input operation state according to how to hold it when the power is turned on.

[0010]

According to a first aspect of the present invention, a plurality of input buttons are arranged so that a combination of positions to be pressed corresponding to each finger is different depending on how to hold the hand. The input button group that outputs the input signal corresponding to the pressed input button and the correspondence table of the input signal and the input code are held in plural types, and the input signal notified from the input button group is input according to the correspondence table. If the input signal conversion unit to convert to and the input code notified from the input signal conversion unit is a specific input code generated by changing the way of holding when holding it, switch the correspondence table to the input signal conversion unit. It is characterized in that the input determination unit for requesting is provided, and the correspondence between the operation of each finger and the input code does not change depending on how the user holds the input code.

According to the invention of claim 2, in addition to the structure of claim 1, the display for displaying various kinds of information and the input code notified from the input signal conversion section are generated by changing the way of holding the input code. In the case of the specified input code, the input determination unit is activated, and a display switching unit that switches the display direction of the display is provided.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the power is turned on when any one of a plurality of specific input buttons of the input button group is pressed when the power is turned off. After that, a power-on unit that notifies the input determination unit of a specific input code corresponding to the pressed input button is provided.

[0013]

In the invention of claim 1, the input button group is composed of a plurality of input buttons arranged such that the combinations of the positions pressed corresponding to the respective fingers are different depending on how to hold the input buttons. , Outputs an input signal corresponding to the pressed input button. The input signal conversion unit holds a plurality of types of correspondence tables of input signals and input codes, and converts the input signals notified from the input button group into input codes according to the correspondence table. The input determination unit requests the input signal conversion unit to switch the correspondence table when the input code notified from the input signal conversion unit is the specific input code generated by the change of the holding manner when the handheld. The correspondence between the operation of each finger and the input code does not change depending on how the user holds the hand.

In the invention of claim 2, the display displays various information. The display switching unit is activated by the input determination unit and switches the display direction of the display when the input code notified from the input signal conversion unit is the specific input code generated by the change in the way of holding it when held by hand. . In the invention of claim 3, the power-on unit corresponds to the input button that is pressed after the power is turned on, when any one of the plurality of specific input buttons of the input button group is pressed when the power is turned off. The input determination unit is notified of the specific input code.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram of an input / output device according to a first embodiment of the present invention. This input / output device includes an input button group 1 and
Input signal conversion unit 2, input determination unit 3, and display switching unit 4
And a display 5. Input button group 1
Consists of multiple input buttons that output an input signal when pressed by the user, so that the combination of positions that can be pressed with a finger and is natural depends on how you hold it in your hand. It is located in. The input signal converter 2 converts the input signal notified from the input button group 1 into an input code. The input determination unit 3 determines the input code notified from the input signal conversion unit 2 and requests the input signal conversion unit 2 to switch the correspondence between each input signal and the input code if the input code is a specific code. The display switching unit 4 is activated by the input determination unit 3 and switches the display direction of the display screen of the display 5. The display 5 displays various information.

FIG. 2 and FIG. 3 are explanatory views of the usage state of the input / output device according to the first embodiment of the present invention. In this example, the handheld input / output device is a document reader for displaying a sentence. To do. The input button group 1 is composed of six input buttons 1a to 1f, and these input buttons 1a to 1f can be operated with one hand. Input button 1
The arrangement of a to 1f is as shown in FIG. 2 and FIG. 3. With this arrangement, due to the structure of the hand, when the user holds the input button 1b with the right hand as shown in FIG. When the user holds it with his left hand, the input button 1a cannot be pressed with one hand. Further, the six input buttons 1a to 1f of the input button group 1 generate input signals S1 to S6, respectively, when pressed.

The input signal converter 2 converts the input signals S1 to S6 generated by the respective input buttons 1a to 1f of the input button group 1 into input codes, which is a correspondence table A shown in FIG. 4 and FIG. The correspondence table B shown in FIG. 2 is stored, and any one of the correspondence tables is used to convert the input signals S1 to S6 notified from the input buttons 1a to 1f of the input button group 1 into input codes. To do. Further, the input signal converter 2
Switches the currently used correspondence table in response to a request from the input determination unit 3.

The input judging section 3 judges the input code notified from the input signal converting section 2, and if it is a specific input code C2, after requesting the input signal converting section 2 to switch the correspondence table. It is assumed that the display switching unit 4 is requested to invert the screen display of the display 5 upside down. If the input code is not C2, the application program is notified of the input code as it is.

It should be noted that the document reader as an example of the input / output device has a built-in application program having the functions of displaying the next document and scrolling up / down / left / right. It is assumed to have a function of executing each process shown in FIG. 6 corresponding to the input code. Next, the operation of the document reader as an example of the input / output device will be described with reference to the flowchart of FIG. Now, it is assumed that the user holds the document reader with his right hand as shown in FIG. 2 and is reading the document displayed on the display screen of the display 5. When the user presses any one of the input buttons 1a and 1c to 1f of the input button group 1, the corresponding input signals S1 and S3 to S6 are generated and notified to the input signal converter 2 (step 10).
1). As a result, the input signal conversion unit 2 refers to the correspondence table A of FIG.
Input codes C1 and C3 to C6 corresponding to S3 to S6 are generated and notified to the input determination unit 3 (step 102). Accordingly, the input determination unit 3 determines whether or not the input code is C2 (step 103). Since the input code is not C2, the input code is directly notified to the application program (step 104). As a result, the applied program is
Displaying the next document, scrolling up, scrolling right, scrolling left, and scrolling down are executed corresponding to the notified input code among the input codes C1, C3 to C6 (step 105).

If the user changes the document reader to the left hand as shown in FIG. 3 and presses the input button 1b, the input button 1b generates an input signal S2 and notifies the input signal conversion unit 2 ( Step 101). As a result, the input signal conversion unit 2 refers to the correspondence table A of FIG. 4, which is the correspondence table currently being used, and the input code C corresponding to the input signal S2.
2 is generated and notified to the input determination unit 3 (step 10
2). Thus, the input determination unit 3 determines whether the input code is C2 (step 103). Since the input code is C2, the input signal conversion unit 2 displays the correspondence table A to the correspondence table B in FIG. After making a request to switch to, the display switching unit 4 is requested to vertically flip the screen display of the display 5. As a result, the input signal conversion unit 2 switches the correspondence table from A to B (step 106), and the display switching unit 4 vertically flips the current display direction of the display 5 (step 107). As a result, as shown in FIG. 3, the user can read the document displayed on the display screen of the display 5 by holding the document reader with his left hand.

In this state, the user inputs the input buttons 1b to 1f.
When any one of the input signals S2 to S6 is pressed,
Occurs and is notified to the input signal converter 2 (step 1
01). As a result, the input signal conversion unit 2 refers to the correspondence table B of FIG.
Input codes C1, C6, C5, C4, C corresponding to S6
3 is generated and notified to the input determination unit 3 (step 10
2). Accordingly, the input determination unit 3 determines whether or not the input code is C2 (step 103). Since the input code is not C2, the input code is directly notified to the application program (step 104). As a result, the application program executes the display of the next document, the upward scrolling, the rightward scrolling, the leftward scrolling, and the downward scrolling corresponding to the notified input code among the input codes C1, C6, C5, C4, and C3 (step 105). ).

As described above, the input button 1 at the thumb position which can be naturally pressed when the document reader is held from the right hand to the left hand or from the left hand to the right hand.
By pressing a or the input button 1b, it is possible to carry out the work with the screen display of the display 5 oriented in the correct direction regardless of which hand it holds. Whether the document reader is held with the right hand or the left hand, the button input with the thumb displays the next document, the button input with the index finger scrolls up, the button input with the middle finger scrolls right, and the button input with the ring finger scrolls left. ,
It is possible to operate without changing the correspondence that the button input by the little finger scrolls downward.

That is, an important feature of the first embodiment is that, when the user holds the document reader by hand, the user can input only in the handheld state, or presses the input button arranged at a position where the user can naturally input. Thus, the user can use any hand without changing the correspondence between the finger and the operation learned by the user. Also, the display direction is automatically switched to the correct direction according to how to hold it.

In the first embodiment, the input buttons 1a to 1f are arranged as shown in FIGS. 2 and 3, and the input button that can be pressed with the thumb is changed depending on which of the left and right hands holds the document reader. However, the input buttons 1a to 1f are arranged as shown in FIGS. 8 and 9, and the input buttons that can be pressed with the index finger are changed depending on which of the left and right hands holds the document reader. You may comprise.

Further, in the input / output device having the input buttons 1a to 1f arranged as shown in FIGS. 10 and 11, the vertical holding is set to the horizontal holding and the input button 1b is depressed to display the vertical screen. Switch the display to a horizontal screen display,
It is also possible to switch to the input operation corresponding to it. As described above, it is obvious that the input operation and the display can be changed to those suitable for each by pressing the input button arranged according to the shape of holding vertically and holding horizontally.

In the first embodiment, the input signal conversion unit 2
Input codes C1 to C corresponding to the input signals S1 to S6 from the input buttons 1a to 1f of the input button group 1 on a one-to-one basis.
Although the input signal conversion unit 2 is configured to convert to 6,
In order to determine whether or not a plurality of input buttons have been pressed simultaneously, by adding a function to wait for a certain period of time when one input signal is input and whether or not another input signal is input, this occurs within that period. One input code may be output corresponding to a plurality of input signals. in this case,
Needless to say, conversion is performed by holding a correspondence table to which different input codes are assigned, corresponding to a combination of a plurality of input signals obtained by a combination of pressing a plurality of input buttons.

For example, as shown in FIGS. 12 and 13, eight input buttons 1a to 1f are provided as the input button group 1, and when the input buttons 1a to 1f are pressed, the input signals S1 to S8 are generated and the input signal converter 2 is provided. Is the correspondence table A as shown in FIG. 14 and FIG.
With the configuration including B, the input buttons 1a to 1e corresponding to all the fingers of the left hand when the hand is changed from the right hand to the left hand.
By pressing at the same time, the input signals S1 to S5 are notified to the input signal converter 2. As a result, the input signal conversion unit 2 refers to the correspondence table A of FIG.
To occur. As a result, the input determination unit 3 causes the input code C
The switching of the holding manner of the left and right is determined by 2 and the switching of the correspondence table of the input signal conversion unit 2 to the correspondence table B of FIG. 15 is notified. Therefore, the same operation can be performed corresponding to each finger regardless of which hand is held. At this time, since it is not necessary to switch the display of the display screen of the display 5, the input determination unit 3 does not call the display switching unit 4. (Embodiment 2) FIG. 16 is a block diagram of an input / output device according to a second embodiment of the present invention.
1, an input signal conversion unit 12, an input determination unit 13, a display switching unit 14, a display 15, and a power-on unit 16. The input button group 11 includes a plurality of input buttons that output an input signal when pressed by the user, and can be pressed with a finger according to how to hold it in a hand, and a natural position. Are arranged in different combinations. The input signal converter 12 converts an input signal from the input button group 11 into an input code. The input determination unit 13 determines the input code from the input signal conversion unit 12 and the power-on unit 16, and requests the input signal conversion unit 12 to switch the correspondence between each input signal and the input code if it is a specific code. . The display switching unit 14 is the input determination unit 1
3, the display direction of the display screen of the display 15 is switched. The display 15 displays various information. The power-on unit 16 has a group of input buttons 1 when the power is turned off.
When the specific input button No. 1 is pressed, the input determination unit 13 is notified of the specific input code after the power is turned on.

FIG. 17 and FIG. 18 are explanatory views of the usage state of the input / output device according to the second embodiment of the present invention. In this example,
It is assumed that the input / output device that is handheld is a document reader that displays a sentence. The input button group 11 includes six input buttons 11a to 11f.
1a to 11f can be operated with one hand. The layout of the input buttons 11a to 11f is as shown in FIG. 17 and FIG.
The user cannot press the input button 11b with the right hand as shown in FIG. 17, and the input button 11a with the left hand as shown in FIG. The six input buttons 11a to 11f of the input button group 11 generate input signals S1 to S6, respectively, when pressed.

The input signal converter 12 includes an input button group 11
Input signal S1 generated by each of the input buttons 11a to 11f
Correspondence table A shown in FIG. 19 and correspondence table B shown in FIG. 20 are stored as correspondence tables for converting S6 to S6 into input codes, and one of these correspondence tables is used to input button group 11 Signal S generated by the input buttons 11a to 11f of
It is assumed that 1 to S6 are converted into an input code. Furthermore, the input signal conversion unit 12 switches the correspondence table currently used at the request of the input determination unit 13.

The input judging section 13 judges the input code notified from the input signal converting section 12 and the power-on section 16, and when it is the specific input code C7, C8,
After requesting the input signal conversion unit 12 to switch the correspondence table, the display switching unit 14 is requested to vertically flip the screen display of the display 15. Also, the input code is C7
If it is not C8, the input code is directly notified to the applicable program.

The display switching unit 14 accepts a request for switching to the designated screen display direction from the input determination unit 13 and switches to the designated screen display direction. The power-on unit 16 turns on the power when the input button 11a or the input button 11b in the input button group 11 is pressed when the power is turned off. This is the input button 1
It is realized by providing a switch connected to 1a and 11b and connecting the switch and a relay circuit.
Thereby, the input button 11a or the input button 11b
When is pressed, the switch is also contacted and turned on so that the relay circuit can conduct the power supply circuit. After the power is turned on, the power-on unit 16 notifies the input determination unit 13 of the input code C7 when the input button 11a is pressed and activated, and when the input button 11b is pressed and activated. , Input determination unit 1
It is assumed that the input code C8 is notified to 3. After the power is turned on, the power-on unit 16 does not notify the input determination unit 13 of the input codes C7 and C8 even if the input buttons 11a and 11b are pressed. Before turning on the power, enter button 1
Even if 1a and 11b are pressed, the input buttons 11a and 11
It is assumed that b does not notify the input signal converter 12 of the input signals S1 and S2.

It should be noted that the document reader as an example of the input / output device is assumed to have a built-in application program having a function of displaying the next document and scrolling up / down / left / right. It is assumed to have a function of executing a predetermined process corresponding to C6. Next, the operation of the document reader as an example of the input / output device will be described. Now, when the user presses the input button 11a in the input button group 11 to turn on the power with the right hand, for example, the power-on unit 1 connected to the input button 11a.
6 turns on the power, and inputs the input code C7 to the input determination unit 13.
To notify. As a result, the input determination unit 13 is notified of the specific input code C7. Therefore, after notifying the input signal conversion unit 12 of the request to switch the correspondence table to the correspondence table A, the input determination unit 13 switches to the screen direction suitable for holding with the right hand. The request is notified to the display switching unit 14. As a result, the input signal converter 12
Switches the correspondence table to the correspondence table A. The display switching unit 14
However, the display direction of the display screen of the display 15 is switched to a screen direction suitable for holding by the right hand. Thus, the user can operate in the same manner as the input / output device of the first embodiment as shown in FIG.

When the user depresses the input button 11b in the input button group 11 to turn on the power with the left hand, for example, the power-on section 16 connected to the input button 11b.
Turns on the power and notifies the input determination unit 13 of the input code C8. As a result, the input determination unit 13 is notified of the specific input code C8, and therefore, after notifying the input signal conversion unit 12 of the request to switch the correspondence table to the correspondence table B, the input determination unit 13 switches to the screen direction suitable for holding with the left hand. The request is notified to the display switching unit 14. As a result, the input signal conversion unit 12
The correspondence table is switched to the correspondence table B. In addition, the display switching unit 14
The display direction of the display screen of the display 15 is switched to a screen direction suitable for holding by the left hand. Thus, the user can operate in the same manner as the input / output device of the first embodiment as shown in FIG.

As described above, when the specific input button 11a, 11b of the input button group 11 is pressed, the power is turned on, and the power input unit 16 for notifying the input determination unit 13 of the pressing is provided. It is possible to automatically determine which hand-held form is used when the power is turned on. In the second embodiment described above, the power button 16 is configured by providing a switch in communication with the input button 11a and the input button 11b and connecting the switch and the relay circuit. However, for example, an electric signal is generated when the power is turned on. The power-on unit 16 may be configured by using an IC circuit that operates.

[0035]

As described above, according to the present invention, a plurality of input buttons arranged so that the combination of the positions to be pressed corresponding to each finger is different depending on how to hold the hand. The input button group that outputs an input signal corresponding to the pressed input button, and a plurality of types of correspondence tables of the input signal and the input code are held, and the input signal notified from the input button group is according to the correspondence table. When the input signal converting unit for converting into the input code and the input code notified from the input signal converting unit are the specific input codes generated by the change in the holding manner when the hand is held, the input signal converting unit corresponds to the above. An input determination unit that requests switching of the table is provided, and it is configured so that the correspondence between the operation of each finger and the input code does not change depending on how to hold it when it is held by hand. In addition, the input determination section determines whether a specific input code that can be input only in the handheld state or that can be input very naturally, and the correspondence table of the input signal conversion section is switched. Even when the user changes the operation, the operation can be continued without changing the correspondence between the finger and the operation learned by the user, and the operability can be improved.

Further, when the display for displaying various information and the input code notified from the input signal converter is a specific input code generated by the change of the holding manner when the hand is held, the input judging unit starts the input code. If the display switching unit that switches the display direction of the display is provided, the display state can be made correct according to how to hold the display.

When any one of a plurality of specific input buttons in the input button group is pressed when the power is turned off, after the power is turned on, a specific input code corresponding to the pressed input button is input. If the power-on unit that notifies the unit is provided, it is possible to automatically set a suitable input operation state with respect to how to hold the unit immediately after the power is turned on.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an input / output device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a usage state of the input / output device according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram of a usage state of the input / output device according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram of a correspondence table of an input signal conversion unit included in the input / output device according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram of a correspondence table of an input signal conversion unit included in the input / output device according to the first embodiment of the present invention.

FIG. 6 is an explanatory diagram of a relationship between an input code and processing of the input / output device according to the first embodiment of the present invention.

FIG. 7 is a flowchart illustrating an operation of the input / output device according to the first embodiment of the present invention.

FIG. 8 is an explanatory diagram of a usage state of the input / output device according to another embodiment of the present invention.

FIG. 9 is an explanatory diagram of a usage state of the input / output device according to another embodiment of the present invention.

FIG. 10 is an explanatory diagram of a usage state of the input / output device according to still another embodiment of the present invention.

FIG. 11 is an explanatory diagram of a usage state of the input / output device according to still another embodiment of the present invention.

FIG. 12 is an explanatory diagram of a usage state of the input / output device according to still another embodiment of the present invention.

FIG. 13 is an explanatory diagram of a usage state of the input / output device according to still another embodiment of the present invention.

FIG. 14 is an explanatory diagram of a correspondence table of an input signal conversion unit included in an input / output device according to yet another embodiment of the present invention.

FIG. 15 is an explanatory diagram of a correspondence table of an input signal conversion unit included in an input / output device according to yet another embodiment of the present invention.

FIG. 16 is a configuration diagram of an input / output device according to a second embodiment of the present invention.

FIG. 17 is an explanatory diagram of a usage state of the input / output device according to the second embodiment of the present invention.

FIG. 18 is an explanatory diagram of a usage state of the input / output device according to the second embodiment of the present invention.

FIG. 19 is an explanatory diagram of a correspondence table of the input signal converter included in the input / output device according to the second embodiment of the present invention.

FIG. 20 is an explanatory diagram of a correspondence table of the input signal converter included in the input / output device according to the second embodiment of the present invention.

[Explanation of symbols]

 1 Input Button Group 1a to 1f Input Button 2 Input Signal Converter 3 Input Judgment Unit 4 Display Switching Unit 5 Display 11 Input Button Group 11a to 11f Input Button 12 Input Signal Converter 13 Input Judgment Unit 14 Display Switching Unit 15 Display 16 Power Supply Input section

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G06F 15/02 310 D 315 C

Claims (3)

[Claims] 1. A plurality of input buttons arranged so that combinations of positions to be pressed corresponding to respective fingers are different depending on how to hold the hand, and input corresponding to the pressed input button. An input button group that outputs a signal, an input signal conversion unit that holds a plurality of types of correspondence tables of input signals and input codes, and converts the input signals notified from the input button group into input codes according to the correspondence table, When the input code notified from the input signal conversion unit is a specific input code generated by changing the way of holding when held, an input determination unit requesting the input signal conversion unit to switch the correspondence table, The input / output device is characterized in that the correspondence between the operation of each finger and the input code does not change depending on how to hold it by hand. 2. A display for displaying various kinds of information, and when the input code notified from the input signal conversion unit is a specific input code generated by a change in the way of holding the device by hand, it is started by the input determination unit. The input / output device according to claim 1, further comprising: a display switching unit that switches a display direction of the display. 3. When any one of a plurality of specific input buttons in the input button group is pressed when the power is turned off, after the power is turned on, a specific input code corresponding to the pressed input button is determined to be input. The input / output device according to claim 1, further comprising a power-on unit that notifies the unit.