JP2002073279A - Touch input device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a touch input device which is convenient for an operator, in which malfunctions can be prevented to the utmost and whose life can be longer. SOLUTION: A basic key 11, a scale factor key 12 and an application key 13 displayed at the top part of the screen is defined as a group 31, a message displaying part 14 in the middle part is defined as a group 32, and a toner replenishment key 17 and a set confirmation key 18 at the bottom stage are defined as a group 33. When the depression count of any key surpasses a prescribed value, the groups 31 and 33 are switched over and displayed without changing the arrangements of the respective keys of the groups 31 and 33. That is, the basic key 11, the scale factor key 12 and the application key 13 are displayed at the bottom part with the arrangements of the keys remaining as they are, and the toner replenishment key 17 and the set confirmation key 18 are displayed on the top part. Thus depression frequency can be distributed, the life of this touch input device is made longer, and also, the operator can easily operate the input device and malfunctions can be prevented because the key arrangements are unchanged even though the display positions of the keys are changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a touch input device, and more particularly to an improvement in display control of keys displayed on a display panel.

[0002]

2. Description of the Related Art Conventionally, an operation panel of a copying machine, a facsimile, or the like displays a plurality of keys for input on a display panel of a liquid crystal display device or a CRT display device, and a transparent panel arranged on the display panel. 2. Description of the Related Art A touch input device that controls an operator to input a key by touching a portion of the touch panel on which a key is displayed with a finger or the like is frequently used.

The surface of the touch panel used for this touch input device is generally formed of a film-shaped electrode, so that if the same position is pressed in a concentrated manner, the portion is scratched or worn away. Key input cannot be detected, and the service life may soon be reached. Therefore, as a technique for extending the life of the touch input device, there is a technique disclosed in, for example, Japanese Patent No. 30000087. According to the technology disclosed in this publication, for a plurality of displayed keys, the number of times each key is pressed is counted, keys that are pressed frequently and keys that are not frequently pressed are determined, and these keys are exchanged. Is prevented from being pressed frequently.

[0004]

However, if a high-frequency key is replaced with a low-frequency key as in the above-mentioned prior art, there is a problem that the operator performs an erroneous operation or the operator becomes inconvenient. That is, the operator
The user is accustomed to the current key layout (key layout), and particularly frequently used keys may be depressed without noticing that the keys have been replaced due to the practice of being depressed all the time, resulting in erroneous operation. In addition, even if the user notices that the key has been replaced, the user will still feel uncomfortable, and it will be difficult to find the place where the key has been replaced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a touch input device which is easy to use for an operator, can minimize erroneous operations, and can prolong its life. I do.

[0006]

In order to solve the above-mentioned problems, the present invention displays a plurality of keys on a display panel,
A touch input device that receives an input of a pressed key, an acquisition unit that acquires a pressing frequency of the pressed key, and a management that manages two or more keys to be moved in a group unit as one group Means for moving a key of one group managed by the management means without changing its relative positional relationship and displaying the key on the display panel, based on the pressing frequency of the key obtained by the obtaining means. It is characterized by comprising display control means, and key detection means for detecting that the key has been pressed based on the display position of the moved key on the display panel.

Further, the display control means displays the keys of the one group by rotating the keys by a predetermined angle so as not to change the relative positional relationship, and the display panel of the touch input device is held by itself. Characterized in that it can be attached to the holding member by rotating the same angle as the predetermined angle.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 (1) Configuration of Operation Panel FIG. 1 is a diagram showing a configuration of an operation panel provided with a touch input device according to the present embodiment, and this operation panel is used for a copying machine. It is.

As shown in FIG. 1, an operation panel 1 includes ten keys 2 for setting the number of copies and a copy magnification, a print key 3 for instructing the start of a copying operation, and a touch input device 10. . The touch input device 10 includes a liquid crystal display unit 107 (see FIG. 2), and the display panel 10 thereof.
A transparent touch panel 108 (see FIG. 2) is disposed on the top of the display unit 0 to display various states of the copying machine such as occurrence of toner empty by a message, display information such as a copy magnification or the number of copies, and the like. The input of the copy magnification by the user and the selection input of various copy modes such as the duplex copy mode for copying on both sides of the sheet are received.

FIG. 1 shows a state where a basic screen (a screen when the power of the copier is turned on) is displayed on a display panel 100 via a transparent touch panel 108.
In the upper row, a “basic” key 11, a “magnification” key 12, and an “application” key 13 are displayed adjacent to one row. In the middle part of the basic screen, a message display section 14 indicating the status of the copying machine such as "copying is possible" and a copy number display section 15 are displayed.
And a copy magnification display section 16 are displayed, and a "toner replenishment" key 17 and a "setting confirmation" key 18 are displayed in the lower row adjacent to one row. The key layout of the basic screen is
Although there is a case where the key layout is changed by a display position control process described later, FIG.
State that has not been changed any times).

The "magnification" key 12 is a key for switching the screen to a copy magnification input screen (not shown) for inputting a copy magnification. When the “magnification” key 12 is pressed by the user, the screen is switched to a copy magnification input screen, and the user can input a copy magnification using the ten keys 2. The value input here is displayed on the copy magnification display section 16.

The "application" key 13 is a key for switching the screen to a copy mode selection screen (not shown) for selecting a copy mode. When the "application" key 13 is pressed, the screen is switched to a copy mode selection screen, and the user can select a desired copy mode on this screen. "Basic"
The key 11 is a key for returning the screen from the copy magnification input screen or the like to the basic screen.

The "toner supply" key 17 is a key for forcibly operating the toner supply function. When a large number of originals having many black portions such as photographs are copied in large quantities, the toner supply function cannot keep up and the toner concentration may temporarily decrease. In such a case, when the “toner supply” key 17 is pressed, Then, the toner supply function is activated, and the toner density can be immediately restored. While the toner supply function is operating, a message “toner is being supplied” is displayed on the message display unit 14.

The "setting confirmation" key 18 is a key for switching the screen to a confirmation screen (not shown) for confirming the copy mode, and the user confirms the currently set copy mode on this confirmation screen. be able to. When the user presses any of the above-described keys for input, that is, by touching the display portion of any of the keys on the touch panel 108 with a finger or the like, the input of the touched key is performed, The function of that key is performed.

FIG. 2 is a block diagram showing the configuration of the touch input device 10. As shown in FIG. 1, the touch input device 10 includes a CPU 101, a ROM 103, an EEPROM 1
04, a display control unit 105, a position information acquisition unit 106, a liquid crystal display unit 107, and a touch panel 108. The display control unit 105 outputs a display signal related to keys, messages, and the like to be displayed on the display panel 100 of the liquid crystal display unit 107 to the liquid crystal display unit 107 according to a control signal from the CPU 101.

The liquid crystal display unit 107 displays keys and messages on the display panel 100 based on a display signal from the display control unit 105. In the touch panel 108, a film-shaped upper transparent electrode and a glass-like lower transparent electrode are opposed to each other via a spacer, and when the user touches the upper transparent electrode, the portion contacts the lower transparent electrode, and the touched position is set. Is detected.

The position information acquisition section 106 is a touch panel 1
In step 08, the contact position between the upper transparent electrode and the lower transparent electrode is detected, which key has been pressed is determined, and this is output to the CPU 101 as key information. More specifically, the position information acquisition unit 106 obtains position data that associates each key or the like from the CPU 101 with a coordinate position indicating a display position of the key or the like on the display panel 100 (this data is originally a management table in the EEPROM 104). (Described later). The coordinates are derived from the contact position between the upper transparent electrode and the lower transparent electrode when the key is pressed, and when the coordinates are known, the received position is obtained. It is determined which key was pressed from the data.

The CPU 101 recognizes the key pressed by the user based on the key information sent from the position information obtaining unit 106, and sends a control signal to the display control unit 105 according to the recognized key content to display the liquid crystal display. The screen of the unit 107 is switched. Also, the information of the key recognized as being pressed is output to the outside, here, the operation panel 1 or the control unit of the copying machine body. Further, based on input information of the ten keys 2 and the print keys 3 sent from the operation panel 1,
A control signal is sent to the display control unit 105 as necessary to switch the screen. Specifically, for example, when the user inputs the number of copies by using the numeric keypad 2, a process of displaying the number on the number-of-copies display unit 15 is performed.

Further, a press count indicating the number of times each key is pressed is counted, and the data is stored in an EEPROM.
When the value exceeds a predetermined value, a display position control process for changing a key layout displayed on the display panel 100 is performed. The ROM 103 includes the liquid crystal display unit 10
7 stores a display processing program related to the content to be displayed, and a display position control processing program.

The EEPROM 104 stores the data of the press count and a management table (see FIG. 9) to be described later. FIG. 3 is a flowchart showing the contents of the display position control process. As shown in the figure, first, the CPU 101 determines whether or not there is a key input displayed on the display panel 100 (step S1).

When it is determined that a key input has been made ("Y" in step S1), "1" is incremented in the press count of the block to which the key belongs (step S1).
2) The value is stored in the EEPROM 104 (step S3). In the present embodiment, as shown in FIG. 4, the touch panel 108 is divided into nine blocks 21 to 29, and the key press count is counted in block units. For example, if any part of the area of the block 21 is pressed (including a part around the display position of the “basic” key 11 if the area is within the area), the pressing count of the block 21 is counted.

For this reason, as shown in the example of pressing count counting in FIG. 5, the key pressing count is counted for each of the blocks 21 to 29, and this value is stored in the EEPROM 104. Specifically, for example, when the basic key 11 is pressed by the user, since the basic key 11 belongs to the block 21, the CPU 101 transmits the data of the press count of the block 21 (523 times in FIG. 5). The data is read from the EEPROM 104, "1" is incremented, and the value (524 times) is overwritten and stored in the EEPROM 104 as a new press count of the block 21.

Returning to FIG. 3, it is determined whether or not the press count value of each of the blocks 21 to 29 is equal to or greater than a predetermined value P (step S4). Here, the predetermined value P is a value for determining whether or not it is necessary to change the display position of the key. , For example, is set to の.

When it is determined that the press count of each of the blocks 21 to 29 is smaller than the predetermined value P ("N" in step S4), the screen is displayed without changing the key layout (step S6), and the process is terminated. . On the other hand, when the press count of any block becomes equal to or more than the predetermined value P (“Y” in step S4), the CPU 101 executes a key display process (step S5), and ends the display position control process.

The key display process is a process of determining a key movement pattern and displaying each key based on the determined pattern. In the present embodiment, as shown in FIG.
Each of the keys and the display unit is a group 31 including a "basic" key 11, a "magnification" key 12, an "application" key 13, a message display unit 14, a copy number display unit 15, a group 32 including a copy magnification display unit 16, "Toner supply" key 1
7. When the keys are moved in advance into a group 33 composed of a "setting confirmation" key 18 and the keys are moved, each key such as a "basic" key 11 belonging to the group 31, as shown in FIG. The keys such as the “toner replenishment” key 17 belonging to the group 33 are arranged at the lower position of the display panel 100 without changing the key order (key arrangement) of the horizontal row, without changing the key order. This is replaced with the position and displayed.

This is done for the following reason. That is, the user becomes accustomed to the current key arrangement as the operation panel 1 is used. Therefore, for example, three keys arranged in a horizontal line are arranged in order from the right end to the “basic” key 1.
1, the "magnification" key 12, the "application" key 13, and so on, the user can learn the positional relationship between the keys. Therefore, in the case of the key layout as in the present embodiment, if the keys arranged in a horizontal line are displayed as the keys to be moved in the group, the keys are replaced in the group and the user is familiar. You can immediately notice where the keys of the array have moved, and since the keys are displayed in the familiar layout, you can immediately find the key you want to press, and you can operate without discomfort This is because erroneous operation can be prevented.

Hereinafter, the contents of the key display processing will be described with reference to the flowchart of FIG. 8 showing a subroutine of the key display processing. The CPU 101 determines a key group to be moved (step S51). First, the above step S
In step 4, the key displayed at the position of the block whose press count is equal to or greater than the predetermined value P is specified as the key to be moved.

Specifically, for example, when the press count of each block is accumulated in the state shown in FIG. 5, that is, when the "basic" key 11 is used much more frequently than the other keys, the block 21 Is pressed in step S
Considering the case where the count value becomes equal to or more than the predetermined value P for the first time in 4 (the other blocks have not reached the predetermined value P), since the press count of the block 21 becomes equal to or more than the predetermined value P, the “basic” key 11 is moved Identify the key to be.

Then, the group to which the specified key belongs is specified. Here, the group 31 to which the “basic” key 11 belongs is specified. Note that the correspondence between each group and a key is managed in a management table as management means shown in FIG. 9, and the CPU 101 refers to this management table to change the “basic” key 11 into the group 3.
1 can be determined.

FIG. 9 is a schematic diagram showing the contents of the management table. As shown in the figure, the management table 120 is divided into a key management unit 121 and a position management unit 122. The key management unit 121 stores data indicating which keys and display units belong to the groups 31 to 33. Is stored. C
The PU 101 can determine which key and display unit belong to which group by referring to the key management unit 121.

In the position management unit 122, each key and the display position of the display unit on the display panel 100 are stored as coordinate position data. In the figure, for example, (X3, Y
3 shows a state in which data 3) is stored. Here, “X3” indicates a position in the horizontal direction on the display panel 100, and “Y3” indicates a position in the vertical direction.

The CPU 101 refers to the management table 120 and sends a signal in which a key to be displayed is associated with data of its coordinate position to the display control unit 105 as a control signal. The display control unit 105 moves a key or the like to a predetermined position on the display panel 100 (for example, based on the control signal).
If the key is the “basic” key, (X3,
(Y3) position).

The data of the key management unit 121 is predetermined according to the key layout displayed on the display panel 100 and is not changed, but the data of the position management unit 122 will be described later. When the key is moved, the CPU 101 rewrites the data to the data of the coordinate position of the movement destination. Then, CPU
101 determines a group to be replaced with the key group of the group 31.

It is conceivable to select the group 32 having the smaller press count by referring to the press count of each block of the groups 32 and 33, but here, as shown in FIG. The key is switched and displayed. This is a configuration in which no key is arranged on the right side of the “toner replenishment” key 17 on the basic screen. Therefore, if the keys of the groups 31 and 33 are switched and displayed, the key is not arranged in the block 21, and This is because the press count will hardly increase any more.

Thus, after the key replacement, pressing the "basic" key 11 increases the pressing count of the block 27 where the "basic" key 11 is located, but the pressing count of the block 21 hardly increases. The pressing count by pressing the "basic" key 11 is a block 21
And 27, the "basic" key 11
Can be extended as compared with the case where is continuously displayed at the position of the block 21.

Returning to FIG. 8, in step S51,
When the group to be moved (the group for replacing the key) is determined, a process of rewriting the data of the coordinate position in the management table 120 for the next key to be replaced is performed (step S52). As described above, the management table 1
The 20 position management unit 122 (FIG. 9) stores coordinate position data indicating the display position of each key on the display panel 100, and the display position of the key is determined by the data of the coordinate position. Therefore, the key for which this data is to be replaced (including the display when the display is replaced) is rewritten.

For example, the "application" key 13 and the "setting confirmation"
When the key 18 is replaced and displayed, the data of the coordinate positions of the “application” key 13 and the “setting confirmation” key 18 are rewritten (replaced). Specifically, in FIG.
At present, the coordinate position of the “application” key 13 is (X1, Y1)
And the coordinate position of the “confirm setting” key 18 is (X7, Y
7), the coordinate position of the “application” key 13 is set to (X
7, Y7), the coordinate position of the “setting confirmation” key 18 is changed to (X
1, Y1). This processing is performed when the corresponding keys belonging to the groups 31 and 33 (the keys are positioned to the right of the “magnification” key 12 and the “toner supply” key 17 and the “basic” key 11 and the “toner supply” key 17 For the key). Note that the position data (X9, Y
9) indicates the coordinate position of the key when the key is located to the right of the “toner supply” key 17.
Therefore, the coordinate position of the “basic” key 11 is (X3,
Y3) is rewritten to (X9, Y9).

In step S53, the CPU 101 refers to the management table 120 to read and acquire data of each key and the coordinate position of the display unit, and sends a control signal for displaying each key to the display control unit 105. Send out,
It returns to the flowchart shown in FIG. Here, the display control unit 105 sends a display signal for displaying a key or the like to the liquid crystal display unit 107 in response to a control signal from the CPU 101, and the basic screen including the key layout shown in FIG. Is displayed.

During the process of displaying keys and the like on the display panel 100, the CPU 101 reads the coordinate position data (position data) stored in the management table 120 and sends the data to the position information acquisition unit 106. The position information acquisition unit 106 derives the coordinate position from the pressed position on the touch panel 108 as described above, and when the coordinate position is known, detects which key is pressed from the received position data. And use this as key information
Output to PU101. The CPU 101 can accurately grasp which key has been pressed from the key information even after the key has been replaced.

Note that, even after the press count of the block 21 exceeds the predetermined value P, when each key is pressed, the press count of each block (including the block 21) is continuously accumulated. If so, step S4
Then, the block 21 is excluded from the determination target, and it is determined whether or not the press count has exceeded the predetermined value P for other blocks.

Then, for example, the "setting confirmation" key 18
When it is determined that the press count of the block 23 (FIG. 7) corresponding to the display position exceeds the predetermined value P, for example, FIG.
The key display is exchanged as shown in FIG. That is, FIG.
When the press count of each block is accumulated in the state shown in (1), the group 32 such as the message display unit 14 is a group that is used less frequently than the other groups, and the group 31 such as the “basic” key 11 is Frequently used groups and groups 33 such as the "toner replenishment" key 18 can be divided into less frequently used groups.

Therefore, as shown in FIG. 10, group 32 is in the upper row, group 33 is in the middle row, and group 3 is in the lower row.
When the key 1 and the display unit are located, the pressing count of the blocks 21 and 23 that have already exceeded the predetermined value P hardly increases thereafter, and the “basic” key 11 and the “setting check” The press count by pressing the key 18 is distributed to the blocks 26 and 27, so that the life can be further extended.

As described above, the keys are switched and displayed in the group unit without changing the key arrangement (the relative positional relationship of each key) in the group, so that the keypad of the same position is prevented from being pressed in a concentrated manner. The service life can be extended, and the user can perform the operation without feeling uncomfortable with the familiar key arrangement. As a result, it is possible to prevent a trouble of searching for a replaced key based on the familiarity of the key arrangement or a mistaken pressing by simply replacing a key having a large number of presses with a key having a small number of presses as in the related art. To play.

Depending on the press count of each block, for example, as shown in FIG. 11, the group 33 is displayed in the upper row, the group 31 is displayed in the middle row, and the keys of the group 32 are displayed in the lower row. By moving the keys without changing the key arrangement, the effect of preventing erroneous operations can be obtained. Also, as shown in FIG.
If the use frequency of the key 11 is extremely high compared to other keys, for example, the key layout shown in FIG. 1 is first displayed, and the press count of the block 21 in which the “basic” key is displayed is reduced to a predetermined value N (here, In this case, 1/3 of the press count of the lifetime of the touch panel 108 due to the press of the same position
Value. ), The screen is switched to the key layout shown in FIG. 7 and displayed on the screen. If the press count of the block 24 on which the “basic” key 11 is displayed exceeds a predetermined value N, the key layout is switched to the key layout shown in FIG. Are distributed to blocks 21, 27, 24,
A longer life can be achieved. It should be noted that which groups are to be replaced in which order is determined in advance,
103 is stored.

In step S4, it is determined whether or not the press count of each of the blocks 21 to 29 is equal to or larger than the predetermined value P.
Since the keys and the like are exchanged in units of ~ 33, the press count may be calculated in units of groups corresponding thereto, and this may be compared with a predetermined value (may be a value different from the above P). Specifically, in step S4, the total value of the press counts of blocks 21 to 23, the total value of 24 to 26, and the total value of 27 to 29 are calculated, and these are compared with the predetermined values. When the total value of ２３ to ２３ 23 is equal to or more than the predetermined value, a group with a low use frequency, for example, the display unit group of the group 32 may be moved and displayed in the blocks 21 to 23.

In the first embodiment, the keys arranged adjacently in the horizontal direction are regarded as one group. For example, in the case of a key layout in which the keys are arranged vertically, This can be a group. That is, on the display panel 100, the arrangement of each key is stored in the memory when the user sees, such as a group of keys arranged in a state adjacent to each other or a group of keys arranged in a position separated from other groups of keys. Key groups that are likely to remain are determined as one group, and which key belongs to which group is stored in the management table in advance, and a group unit (such as a group including only the display group like the group 32) according to the press count May be included) and displayed. At this time, it is desirable to determine a key layout so that a key group (group) expected to increase the press count and a key group (group) expected to decrease may be switched. (Embodiment 2) As described above, in Embodiment 1, when the press count exceeds a predetermined value P as shown in FIG. 3, the keys are exchanged in groups, but in Embodiment 2 of the present invention. By rotating the key, the position of the key is changed to extend the life.

That is, step S in the first embodiment.
The processes from 1 to S4 are performed. In S4, when the press count of a certain block, for example, the block 21, exceeds a predetermined value P, as shown in FIG. Control for display. Here, the touch input device 10 of the second embodiment
As shown in FIG. 13, the display panel 100 of the liquid crystal display unit 107 is configured to be mechanically rotated by 180 ° and attached to the operation panel 1 with the touch panel 108 arranged. When the display panel 100 is rotated by 180 ° and attached, the touch panel 108 is also rotated by 180 °.
For example, the positions 1 to 29 are respectively changed to 29, 28, and 27 in order from the right end in the upper part of the screen, and to 23, 22, and 21 in order from the right end in the lower part.

As shown in FIG. 12, the key display is 180 °.
If the display panel 100 is rotated 180 ° and replaced after the image is rotated and displayed, the key layout is the same as that of FIG. 1, that is, does not change at all. For example, the “basic” key 11 that is frequently used is displayed in the block 29 where the press count is relatively small, and the “setting confirmation” key 18 that is relatively infrequently used is displayed in the block 21 where the press count is most. That is, the press count is distributed for each block. As a result, the service life can be extended without changing the key layout at all. In this configuration, it is desirable to determine the key layout so that the keys that are considered to be the least frequently used and the keys that are considered to be the most frequently used are diagonally located.

(Modifications) Although the present invention has been described based on the embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and the following modifications are conceivable. . (1) In the first and second embodiments, the key and the display unit are switched and displayed in the group where the key is frequently used and the group where the key is used less frequently. However, the present invention is not limited to the method of replacing the key. If there is an empty space where no keys or the like are displayed in the displayable area, keys of a frequently used group are moved to the empty space without changing the relative positional relationship of the keys and displayed. You can also.

(2) In the second embodiment, one key or the like
The display is rotated by 80 °, but the rotation angle is not limited to this. For example, when the display panel 100 has a square shape, the keys and the like may be collectively rotated, for example, 90 ° clockwise to display the image, and the display panel 100 may be rotated counterclockwise by the same angle to be mounted. it can.
In addition, with this configuration, it is possible to sequentially rotate and display the keys and the like by 90 ° each time it is determined that the value exceeds the predetermined value in step S4, so that the press count of each block is further averaged. This has the effect of extending the life.

[0051]

As described above, the present invention is a touch input device, in which each key is moved and displayed in a group unit without changing the relative positional relationship between the keys, thereby extending the life of the touch input device. In addition, the key arrangement remains familiar to the user, and the user can operate the key arrangement without feeling uncomfortable, thereby preventing erroneous operation.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration diagram of an operation panel including a touch input device according to a first embodiment;

FIG. 2 is a block diagram illustrating a configuration of the touch input device.

FIG. 3 is a flowchart showing the contents of a display position control process according to the first embodiment.

FIG. 4 is a diagram showing a state where the touch panel of the touch input device is divided into nine blocks.

FIG. 5 is a schematic diagram showing a count example of a press count in each block when the touch panel is divided into nine blocks.

FIG. 6 is a schematic diagram showing a state in which each key and a display unit are divided into three groups.

FIG. 7 is a diagram showing a state in which keys are replaced and displayed in groups without changing their relative positions.

FIG. 8 is a flowchart showing a subroutine of a key display process.

FIG. 9 is a schematic diagram showing the contents of a management table.

FIG. 10 is a diagram showing another example when keys are switched and displayed.

FIG. 11 is a diagram showing still another example when the keys are switched and displayed.

FIG. 12 is a diagram showing a state in which each key display and a message display are collectively rotated by 180 ° and displayed in the second embodiment.

FIG. 13 is a diagram showing a state in which a display panel of a liquid crystal display unit is mechanically rotated with respect to an operation panel in the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation panel 10 Touch input device 11 Basic key 12 Magnification key 13 Application key 14 Message display part 15 Copy number display part 16 Copy magnification display part 17 Toner supply key 18 Setting confirmation key 100 Display panel 101 CPU 103 ROM 104 EEPROM 105 Display control Unit 106 position information acquisition unit 107 liquid crystal display unit 108 touch panel 120 management table

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5B068 AA01 BD20 BE08 CD02 CD06 DE15 5B087 AA04 CC26 DD09 DE03 5E501 AA15 AC37 BA20 CA04 CB05 EA10 FA04 FA05 FA13 FA23 FA45 FB34

Claims (2)

[Claims] 1. Displaying a plurality of keys on a display panel,
A touch input device that receives an input of a pressed key, an acquisition unit that acquires a frequency of pressing the pressed key, and a management that manages two or more keys to be moved in a group unit as one group. Means for moving keys of one group managed by the management means without changing their relative positional relationship on the display panel based on the frequency of key presses acquired by the acquisition means. A touch input device comprising: display control means; and key detection means for detecting that a key has been pressed based on a display position of the moved key on a display panel. 2. The display control device according to claim 1, wherein the display control unit rotates and displays the keys of the one group by a predetermined angle so as not to change a relative positional relationship between the keys. The touch input device according to claim 1, wherein the touch input device is configured to be rotatable and attachable to the holding member by the same angle as the predetermined angle.