JP2000207079A - Data processor and program recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute an image pointing operation without using a mouse or a pen. SOLUTION: The speed a user moves a main body is calculated according to an output of an acceleration sensor provided in a portable data processor (32). A display screen is enlarged or reduced (35 and 36) when it is moved back and forth, a folder or a file indicated by an icon displayed in the center of the screen is opened when a magnification ratio reaches a prescribed value in a magnification mode, and an opened folder or file is closed when a reduction ratio reaches a prescribed value in a reduction mode (100). When it is moved horizontally or vertically (37), an image is scrolled in the moving direction (200). When a button provided in the main body is singly clicked, the preceding magnification, reduction or scroll operation is repeated one time, and when the button is subjected to double click, the preceding magnification or reduction operation is continuously repeated until the prescribed magnification or reduction ratio is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called portable computer which is suitable for being used by hand.

[0002]

2. Description of the Related Art In a desktop data processing device,
A keyboard is mainly used as input means for inputting information such as characters. A mouse is mainly used for screen operations such as selecting a displayed icon or operating a scroll bar for scrolling. On the other hand, in recent years, computers suitable for carrying (so-called portable computers) have also become widespread. An example is a portable data processing device called a notebook personal computer (hereinafter referred to as a notebook personal computer). Another example is a portable data processing device that is lighter and smaller than a laptop computer, also called a personal digital assistant or portable terminal. These data processing devices are the same in that they each have a weight that can be held by one or both hands. In a notebook computer, a keyboard is used for character input, but a mouse is not used for hand-held use, and cursor movement keys,
Trackballs and the like are used. However, in many portable data processing devices, a pen is used for character input as information input means because of operability, and the pen is often used for screen operation.

In Japanese Patent Application Laid-Open No. Hei 10-161819, an acceleration sensor is provided as a method of not using a pen for screen operation.
When the user moves the terminal horizontally on the display screen, the movement is detected and the screen is scrolled. When the user moves the terminal vertically, the movement is detected and the screen is enlarged or reduced. To provide a portable data processing device.

[0004]

Although a pen is effective as a means for inputting characters, it is necessary to take out or store the pen from a storage unit provided in the terminal every time the pen is used. Yes, this operation is troublesome. For this reason,
It is not very suitable for applications other than character input, for example, operations such as screen pointing.

[0005] Japanese Patent Application Laid-Open No. Hei 10-161819 proposes
It is expected that moving the data processing device itself to perform a screen operation such as scrolling or enlarging / reducing the screen is a natural operation for a user of the portable data processing device. Therefore, only scrolling and enlargement / reduction of the screen have been proposed. These screen operations are operations mainly performed when the contents of a file such as a document are displayed on the screen, operations for changing the display of the screen, and screen operations for performing the same processing on the entire screen. It is.

However, in the data processing device, one of icons is selected from a screen on which a folder icon or a file icon is displayed (hereinafter, this may be referred to as a folder / file icon screen or simply an icon screen). Usually, a screen operation for performing a pointing operation on the screen is also required. That is, folders are generally hierarchically structured, and a file to be opened belongs to one of the folders. Until the folder to which the file to be opened belongs is opened, the upper folders are sequentially opened, and when the icon of the file to be opened is displayed on the screen, the icon of the file is selected. As a result, an application program that uses the file is started, and the file is opened. In order to open a file, an operation of selecting an icon of a folder or a file is basically required, and it is desirable to easily perform this operation.

Further, in the method of moving the data processing device and performing a screen operation by using the data processing device, when the amount of screen change is large, that is, when it is desired to continuously scroll or enlarge / reduce the screen, the data processing device is enlarged. It is necessary to move it within the range, which makes it difficult for the user to operate.

Accordingly, an object of the present invention is to provide a data processing apparatus, particularly a portable computer, which can easily perform a pointing operation such as selecting a part of a screen such as selecting an icon.

Another object of the present invention is to provide a data processing apparatus capable of continuing a screen operation while performing a screen operation using the movement of the data processing apparatus without increasing the movement amount of the data processing apparatus. It is to provide a portable computer.

[0010]

In order to achieve the above object, in one aspect of the data processing device according to the present invention, there is provided a movement detecting means capable of detecting a forward or backward movement of the data processing device; Belonging to one of a plurality of folders having a plurality of hierarchical structures to which a plurality of files belong, at least one icon corresponding to any one of the folders or any one of the files, and at least one of the plurality of files User operation processing means for switching and displaying the contents of the file on the display screen in response to a user's operation.

The user operation processing means responds to the movement detection means detecting the forward movement of the data processing device, and responds to any one of the icons displayed on the display screen. Open-close means for opening one file or folder, and closing the opened one file or folder in response to the movement detection means detecting backward movement of the data processing device. Have.

More specifically, the user operation processing means and the open / close means are realized by a user operation processing program.

Further, the open / close means responds to the movement detection means detecting the forward movement of the data processing device, and displays an icon corresponding to any one of the files at the center of the display screen. When displayed on the section, the one file is opened and its contents are displayed on the display screen, and in response to the movement detection means detecting the backward movement of the data processing device, When the contents of the opened one file are displayed on the display screen, in response to the file open / close means for closing the one file and the forward movement being detected,
When the icon corresponding to any one of the folders is displayed at the center of the above display screen, the one folder is opened, and the contents of the folder include a subordinate folder or any one of the files. Belongs to the lower folder or at least one icon corresponding to the at least one file on the display screen, and in response to the detection of the backward movement, When the contents are displayed on the display screen, there is provided a folder open / close means for closing the opened one folder and displaying the contents of a higher-level folder including the folder.

Further, the movement detecting means is provided in the data processing device, and detects an acceleration sensor for detecting a longitudinal acceleration of the movement of the data processing device, respectively, based on the acceleration detected by the acceleration sensor. A movement determining means for determining whether the data processing apparatus has moved in the front-rear direction.

In another aspect of the data processing apparatus according to the present invention, an operation button operable by a user and movement of the data processing apparatus in at least one of the front-back direction, the left-right direction, and the up-down direction are detected. Possible movement detection means;
At least one icon corresponding to any one folder or any one file belonging to one of a plurality of folders having a plurality of hierarchical structures to which the plurality of files belong, and at least one icon among the plurality of files; User operation processing means for switching and displaying the contents of the two files on the display screen in response to a user operation.

The user operation processing means scrolls the screen displayed on the display screen in response to the movement detection means detecting the movement of the data processing device in any direction. A first operation executing means for executing any one operation of enlargement or reduction, a means for storing a type of operation executed immediately before by the first operation executing means, and an operation button being clicked In response to the stored operation type,
A second operation executing means for executing the same operation as the executed operation.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a data processing apparatus according to the present invention will be described in more detail with reference to some embodiments shown in the drawings. In the following, the same reference numerals represent the same or similar ones.
Further, in the second and subsequent embodiments of the invention, only the differences from the first embodiment of the invention will be mainly described.

<First Embodiment of the Invention> As shown in FIG. 1, a data processing device according to the present embodiment is a portable data processing device, and is therefore also called a portable computer. Has a substantially rectangular shape and is housed in a case 20 having a thickness of several millimeters to several centimeters. The size is, for example, A5 size. However, this size may be about A4 size. Weight is
It is heavy enough to hold with one or both hands. In the figure, the case 20 is configured to be used by being arranged vertically,
You may comprise so that it may be used arrange | positioned horizontally. A display device 5 using, for example, a liquid crystal and a push button 10 are provided on the front surface of the case 20, and a digitizer 7 is provided so as to overlap the display device 5. On the upper side surface of the case 20, an acceleration sensor 8 for detecting an acceleration when the data processing device moves is provided. The push button 10 is provided at the right side of the front surface of the case 20, particularly at the lower right position so that the user can operate it with the right hand. However, the push button 10 may be provided at other positions, for example, at the lower left position suitable for operating with the left hand. Good. It goes without saying that the shape of the data processing device may be other shapes.

The button 10 has a built-in switch (not shown) inside.
This is a self-opening switch that closes when 0 is pressed and opens when the user stops pressing the button 10. The button 10 is a button for instructing a display change operation such as enlargement, reduction, or scrolling described below, or a screen selection operation such as opening or closing a file or a folder. The user presses this button. Meanwhile, these operations are performed using the output of the acceleration sensor 8. The button 10 is also used for single-clicking or double-clicking to repeatedly execute the same type of operation as the previous operation without moving the data processing apparatus.

The acceleration sensor 8 detects an acceleration (X) when the terminal moves in the left and right directions in the figure (hereinafter, this is referred to as the X direction).
Direction acceleration) and the acceleration (Y-direction acceleration) when the terminal moves in the vertical direction in the drawing (hereinafter, referred to as the Y direction).
And the acceleration (Z-direction acceleration) at the time of movement in a direction perpendicular to the plane of the drawing of the terminal (hereinafter, referred to as Z direction). When the user moves the terminal in the Z direction,
When the movement is toward the front of the terminal, that is, when approaching the user, the direction of the movement is called the forward direction, and when the movement is toward the rear of the terminal, that is, when moving away from the user, the direction of the movement is backward. Called direction.

The digitizer 7, which is indicated by a dotted rectangular area in the figure, includes a large number of transparent electrodes extending in the X and Y directions superimposed on the screen of the display device 5. It detects two-dimensional coordinates of a position pointed by the pen 11 or a finger on the screen, and is realized by a technique known per se. In the present embodiment, the pen 1
Reference numeral 1 is mainly used for inputting characters. The pen 11 can also be used for a pointing operation for selecting a folder or document icon or a screen changing operation such as enlarging, reducing or scrolling the screen.

However, the present embodiment is characterized in that the pointing operation and the screen changing operation are realized by the user moving the terminal. More specifically, the operation of enlarging or reducing the screen is realized by moving the terminal forward and backward, respectively. The scrolling of the screen in the X or Y direction is realized by moving the terminal in the X or Y direction. A pointing operation for selecting an icon of a folder or a document file is executed by moving the screen forward with the screen enlarged to a certain magnification. The closing of the folder or the document file selected by the pointing operation is performed by the backward movement with the screen reduced to a certain magnification.

FIG. 2 is a schematic block diagram of the data processing apparatus. In the figure, 1 is a CPU (central processing unit),
3 is a read-only memory (ROM) for storing programs and data, 4 is a random access memory (RAM)
It is. The RAM 4 is backed up by a battery and is used as a non-volatile memory, stores data or files created by a user, or is used as a work memory for calculation. Instead of using the RAM 4 as a battery backup, the ROM 3 may be constituted by an electrically rewritable ROM such as a flash memory, and data or files created by the user may be stored therein. Further, a hard disk may be connected to the CPU 1 and a program or a document file created by a user may be stored therein. Reference numeral 5 denotes a display device, which here comprises a liquid crystal display device (LCD). Reference numeral 6 denotes a display control unit, which here comprises a liquid crystal display control unit.

The acceleration sensor 8 includes an X-direction acceleration sensor (not shown) for detecting X-direction acceleration, a Y-direction acceleration sensor (not shown) for detecting Y-direction acceleration, and a Z-direction acceleration sensor for detecting Z-direction acceleration. It consists of an acceleration sensor (not shown). Each of the X-direction acceleration sensor, the Y-direction acceleration sensor, and the Z-direction acceleration sensor includes, for example, a plate-shaped elastic member. For example, when the terminal is moved by a user, the elastic member included in the X-direction acceleration sensor
The X-direction acceleration sensor is configured to bend according to the acceleration in the direction, and includes a circuit that outputs a signal corresponding to the amount of the deflection. The same applies to the Y-direction acceleration sensor and the Z-direction acceleration sensor.

Reference numeral 9 denotes a sensor control unit for the acceleration sensor 8, which mainly comprises an amplifier (not shown) and an A / D converter, and supplies data representing the acceleration detected by the acceleration sensor 8 to the CPU 1. The push button 10 is connected to the I /
It is connected to the CPU 1 via an O port (not shown). Reference numeral 2 denotes a bus that connects the CPU 1, the ROM 3, the RAM 4, the display control unit 6, the digitizer 7, and the sensor control unit 9. CPU1, bus 2, ROM3, RAM4
An A / D converter (not shown) in the sensor control unit 9 is included in a microcomputer which is generally commercially available. Therefore, the present data processing apparatus includes the microcomputer and the display device 5, the display control unit 6, the digitizer 7, the acceleration sensor 8, the sensor control unit 9, and the push button 10 added to the microcomputer.

FIG. 3 shows a plurality of programs constituting the program 1000 stored in the ROM 3 and circuits or devices related thereto. The operation of the data processing device is controlled by these programs. Program 10
00 is a file operation processing program 140, a graphic management program 150, a file management program 1
60 inclusive. The program 1000 includes other application programs, but is not shown for simplicity. The file management program 160 manages files by using folders arranged in a plurality of layers. As in the folder management program which is usually used, each folder is usually one or more lower folders. Folder and one or more files. Each of the plurality of folders includes a lower-level folder and one or more files. The graphic management program 150 is a program for managing the display on the display device 5. When the file operation processing program 140 instructs to display a folder having a certain hierarchy, the icons of a plurality of folders included therein and the icons are displayed. Display icons of multiple files included in. Further, information on which icon is arranged at which coordinate position in the display space is held. Hereinafter, this type of screen may be referred to as a folder / file icon screen. When displaying the folder / file icon screen, the file operation processing program 140 reads information included in the folder from the file management program 160 and displays the managed information as it is, and a table of contents that the graphic management program 150 can process. There is a method in which a dedicated file in which (directory) is written is stored in the file management program 160, and is read out and displayed. In the latter case, the storage position of the document actually stored in the file management program 160 does not directly correspond to the display. In the present invention, both methods are applicable. The icon image is stored in the file management program 160, and the relation with the file or folder is determined by the file operation processing program 14.
0 or described in a table of contents exclusive file.

The graphic management program 150 is a program generally called a computer graphics program.
When the display of a certain document file is instructed by 40, the contents of the file can also be displayed. Specifically, a new window for displaying and editing a document is generated, and the document is displayed in the window. A plurality of windows can be created at the same time, and the graphic management program 150 also performs management such as searching and deleting the created windows. Hereinafter, the window screen generated and displayed at this time may be referred to as a document file screen.

Further, the graphic management program 15
0 can enlarge or reduce the displayed screen or scroll in the X or Y direction according to an instruction from the file operation processing program 140.
For example, if three-dimensional computer graphics are used for the graphic management program 150, the above-described reduction, enlargement, and scrolling can be easily realized by changing the viewpoint position for observing the icons of the arranged files and folders. For example, when the viewpoint is brought closer to the position of the arranged icon, the display is enlarged. In the following description, 3
An example using three-dimensional computer graphics will be described.

The file operation processing program 140 is a program for processing a user operation in the data processing apparatus. This program 140 is a CD of the program alone or together with other programs 150 and 160.
It can also be stored in a program recording medium such as a ROM and sold. The program 140 can process information input by a user or an operation instructed by the user using the pen 11 on the digitizer 7 as in the related art.

For example, when the user presses a file or folder on the display screen with the pen 11 or finger, the digitizer 7 detects the pressed position and notifies the file operation processing program 140. When the program 140 sends the detected position information to the graphic management program 150, the graphic management program 150 displays the detected position information at a position corresponding to the operated position on the screen displayed on the display device 5 from the position information. Then, it determines whether the icon is a file icon or a folder icon, and responds. If the icon selected by the user is a file icon, the content of the file is read from the RAM 4 and the display control unit 6 is controlled to display the file on the display device 5. If the icon selected by the user is a folder icon, the folder is opened. Further, scrolling, enlarging or reducing the image displayed on the screen can be realized by operating the scroll bar or the button for enlarging or reducing displayed on the screen using the pen 11. But,
The feature of the file operation processing program 140 is that it processes an operation that the user intends to instruct by moving the data processing apparatus.
The description of the processing of the file operation processing program 140 when is used will be omitted for simplicity, unless otherwise specified.

As shown in FIG. 4, the file operation processing program 140 includes a user operation detection routine 10, an enlargement / reduction routine 20, and an open / close routine 10.
0, a scroll routine 200, and a shortcut / repetition routine 300. In the present data processing apparatus, the file operation processing program 140 is always started, and repeatedly monitors whether or not the user has pressed the push button 10 at regular time intervals (step 31). When it is detected that the user has pressed the push button 10, the detection result of the acceleration sensor 8 is read via the sensor control unit 9, and the three-dimensional moving speed of the data processing apparatus (front-back direction,
The calculation of the moving speed in the X direction and the Y direction) is started (step 32). That is, the accelerations in the X, Y, and Z directions detected by the acceleration sensor 8 are integrated, and the moving speeds of the data processing apparatus in the X, Y, and Z directions are calculated. Therefore, it can be understood that the program portion for executing step 32 works together with the acceleration sensor 8 as means for detecting the speed of the data processing apparatus. The speed calculation in this step is continued while the button 10 is pressed. In addition, button 10
It is determined whether or not the pressed state is a click (Step 3).
3). That is, when the time during which the button is pressed is within a predetermined extremely short time, the pressing is a click, and when the time during which the button is pressed is equal to or longer than the predetermined time, the pressing is It can be determined that continuous pressing is performed.

When it is determined that the pressing is continuous pressing, it is determined whether or not the absolute value of the moving speed in the front-rear direction is equal to or greater than a predetermined threshold Tz (step 35). This threshold value is set so as not to detect the movement of the data processing apparatus in the front-rear direction due to camera shake. When the moving speed in the front-rear direction does not exceed the certain threshold value, it is determined whether the absolute value of the moving speed in the vertical direction or the absolute value of the moving speed in the left-right direction is equal to or more than a certain threshold value Ty or Tx, respectively (step). 37). These thresholds are also set so as not to detect vertical or horizontal movement of the data processing apparatus due to camera shake. It can be seen that the program portion executing steps 32, 35, and 37, together with the acceleration sensor 8, functions as movement detection means for the data processing device. When one of the absolute value of the moving speed in the vertical direction or the absolute value of the moving speed in the horizontal direction exceeds the threshold value Ty or Tx, it is determined that the user has moved the data processing device in the vertical direction or the horizontal direction, Scroll routine 2
00 is activated.

As shown in FIG. 5, in this routine 200, the two-dimensional movement angle of the data processing device is detected.
This angle can be detected based on the moving speed in the horizontal direction and the moving speed in the vertical direction. The screen is scrolled by a fixed amount along the detected angle (step 202). Scrolling is realized by sending a control signal corresponding to the angle to the graphic management program 150. The control signals for the graphic management program 150 are a control signal for instructing scrolling in the right direction (0 °) (here, represented by “→”) and a control signal for instructing scrolling in the left direction (180 °) (here, “←”). ”), Upward (9
0 °) and a control signal (here, indicated by “↓”) that instructs scrolling in the downward direction (270 °).
For example, if the moving angle is rightward (0 °), only the control signal “→” is sent, and if the moving direction is upward (90 °), only the control signal “↑” is sent. When the moving direction is an oblique direction, the angle is set to, for example, 0 °, 26 °.
It is determined whether the angle is closest to any of the plurality of reference angles of °, 45 °, 63 °, and 90 °, and scrolling is performed at the determined angle. As for the diagonal scroll, the control signal "→"
This is realized by combining “←”, “↑”, and “↓” in an appropriate ratio. For example, scrolling at 26 ° and 63 ° is realized by outputting control signals “↑” and “→” in the ratio of 1: 2, 2: 1 in the vertical and horizontal directions. After scrolling, data representing this operation, that is, the type of operation is scrolling, and the amount of operation is stored as the scroll angle and the data representing the fixed amount as operation history information (step 20).
3). Thus, the scroll routine 200 ends, and the process returns to step 31. Under the present assumption, the user continuously presses, and the user continues to move the data processing apparatus, so that scrolling is continued.

In this way, the user can use this scroll function to move the data processing apparatus and perform scrolling in the same manner as with the conventional pen 11 for scrolling. For example, when any predetermined folder file screen is displayed as an initial screen when the data processing apparatus is activated, the user can position an icon of a desired folder in the center of the screen.

Referring back to FIG. 4, when it is determined in step 35 that the moving speed in the front-rear direction has exceeded the threshold value Tz, the data processing apparatus is operated in the front-rear direction irrespective of the movement of the main body in the left-right direction or the up-down direction. Is determined to have been moved to
The enlargement / reduction routine 20 is started. In this routine, it is determined whether the moving direction is the forward direction or the backward direction (step 36). If the moving direction is the forward direction, the screen is enlarged by a certain ratio, and the data representing the operation, that is, the type of the operation is changed. Data indicating that the operation amount is the constant ratio is stored as operation history information (step 3).
8). In the backward direction, the screen is reduced by a certain ratio, and data representing the operation, that is, data indicating that the type of operation is reduction and the amount of operation is the above-mentioned constant ratio is stored as operation history information (step 39). afterwards,
The open / close routine 100 is started. The enlargement or reduction is performed by the graphic management program 15.
This is realized by an instruction to 0. Here, scrolling, enlargement, and reduction are performed by a fixed amount (constant ratio). However, a plurality of values are stored in advance as the fixed amount, and are detected in step 32 as values of the fixed amount used for enlargement or reduction. By selecting one of the plurality of values stored in advance in accordance with the magnitude of the absolute value of the acceleration, the speed of enlargement or reduction of the screen may be changed according to the speed at which the device is moved. it can.

When the screen is a folder / file icon screen at the time of enlargement, the file operation processing program 140 maintains the icon closest to the center of the screen (this is a folder icon or a file icon) at the center of the screen. It instructs the graphic management program 150 to enlarge. When the screen is a document file screen, it instructs the graphic management program 150 to enlarge while maintaining the position in the document located at the center of the screen as it is at the center of the screen. Therefore, when the user wants the specific character string portion included in the document file screen to be positioned at the center of the screen even during the enlargement, the character string part is set in advance so as to come to the center of the screen before the enlargement operation. If scrolling, even if the above-described enlargement operation is executed, this character string portion is enlarged while being positioned at the center of the screen. In this embodiment, by utilizing this fact, a character string (called an anchor) to which a link to another file is attached is included in the opened document file screen, and the user can use the anchor. When the user wants to open the other file by using, the anchor is scrolled in advance so as to be at the center of the screen, and then the enlarging operation is executed. Then, as described later, the file is automatically linked to the other file after the enlargement. The maintenance of the center of the current screen is the same when the image is reduced.

Whether the screen is a folder / file icon screen or a document file screen is determined by inquiry to the graphic management program 150. If a document display window is generated and displayed, the document display window is a document file screen, and if not, a folder / file icon screen. If it is a folder / file icon screen,
It instructs the graphic management program 150 to search for the icon closest to the viewpoint position, and obtains the coordinates of the icon. By moving the viewpoint position while interpolating the X and Y coordinates of the center of the arrangement coordinates of the icon and the X and Y coordinates of the current viewpoint position, a function of enlarging the icon while maintaining it at the center of the screen is realized. it can.

Also, a folder / file icon screen,
Regardless of the document file screen, the initial viewpoint position when they are first displayed is determined. One example of the ratio of the distance between the viewpoint and the icon associated with the movement of the viewpoint, based on the difference between the Z coordinate of the icon of the placed file or folder and the Z coordinate of the initial viewpoint position, that is, the distance, based on the distance. And

Referring to FIG. 6, in this routine, it is determined whether the operation executed immediately before is enlargement or reduction (step 101). If the operation is enlargement, the enlargement ratio with respect to the reference size of the current screen is determined. Is determined to have reached a certain threshold value α (%) (step 102). If the current screen enlargement ratio is smaller than the threshold value α (%), the routine 100 ends without performing any processing, and the processing returns to step 31 in FIG. Under the present assumption, since the user continuously presses and the user continues to move the data processing apparatus, the enlargement processing described in step 38 (FIG. 4) is repeated. As a result, step 1 in FIG.
02, it is determined that the enlargement ratio has reached the threshold α. In this case, the screen operation is performed as follows. When the current screen is the folder / file icon screen, as described above, the enlargement is performed so that the folder icon or the file icon is located at the center position of the screen. If the icon is a folder (step 103), the folder is automatically opened, lower folders or files included in the folder are displayed, and the name of the current folder is recorded as operation history information (step 103). 104). This information will be used later when displaying the folder below.

If the icon located at the center of the screen is not a folder icon but a document file icon (step 105), the document file is opened and displayed (step 106). Each document file is created by a specific application program. Opening the document file in step 105 starts the application program that created the document file,
This means that the document file is displayed by the program. Thus, a document display window is generated and displayed, and registered in the graphic management program 150. On the other hand, when the current screen is neither the folder / file icon screen nor the document file screen (step 107), the process ends.

However, when the current screen is not a folder / file icon screen but a document file screen and an already opened document file is displayed (step 107), another character string is added to the character string at the center of the screen. It is determined whether an anchor indicating a link to the file has been set (step 108). Here, the other file is also a file created by the user or a file incorporated in the device in advance, which is stored in the RAM 4, and the name of the file at the link destination is stored corresponding to the character string of the anchor. I have. If an anchor is set, the current file will be closed and the file will be linked to (open the file),
The name of the original file that was opened is stored as operation history information (step 109). At this time, the link source file can be kept open. This operation history information is used to return to the file under the link when the linked file is later closed. If the anchor is not set, the next page of the opened document file is displayed (step 110). Thus, the processing of the open / close routine 100 when the enlargement operation is continuously performed is completed.

If it is determined in step 101 that the last operation was a reduction, it is determined whether or not the reduction ratio with respect to the current standard size of the screen is equal to or less than a certain threshold value β (%). (Step 122). If the current screen reduction ratio is greater than the threshold β (%),
This routine 100 ends without performing any processing, and the processing returns to step 31 in FIG. Under the current assumption, since the user continuously presses and the user continues to move the data processing apparatus, the reduction processing described in step 39 (FIG. 4) is repeated. As a result, it is eventually determined that the reduction ratio has reached the threshold value β in step 122 of FIG. In this case, the screen operation is performed as follows.

When the current screen is a document file screen and an already opened document file is displayed (step 123), it is determined whether or not there is a link source file for the file (step 123). 12
4). This determination is made based on whether or not the name of the link source file is stored as the operation history information corresponding to the current file. If the name of the link source file is stored, the information is the one stored in step 109, and the current file is
It can be seen from the link source file that the file was opened by the link. In the present embodiment, when the reduction ratio for such a linked file reaches the threshold value β, the linked file is closed and the stored link source file name is used to store the linked file. Return to file (Open link source file). At this point, if the link source file is still open, there is no need to open the file, and only the contents of the file need be displayed on the top of the screen. If at step 124,
If it is determined that there is no link source file, the currently displayed file is closed. At this time, if the application program that has opened this file has not opened another file, this application program is also stopped.

On the other hand, when it is determined in step 123 that the current screen is not the opened document file screen (step 123), it is determined whether or not the current screen is a folder / file icon screen (step 12).
7). When the current screen is a folder / file icon screen, a folder / file icon screen for a folder higher than the folder is displayed. For this display, the name of this upper folder stored in step 104 for the current folder / file icon screen is used.

When the displayed folder / file icon screen directly displays the management contents of the file management program 160, to return to the upper folder,
This is possible if the file operation processing program 140 notifies the file management program 160 of the name of the current folder and obtains information on the upper folder. But,
In the case of the above-described display using the table of contents dedicated file, since the upper / lower level relationship is determined by the description in the file and is not managed by the file management program 160, it is necessary to store the name of the table of contents dedicated file which means the upper folder. .

If it is determined in step 127 that the current screen is neither a document file screen nor a folder / file icon screen, nothing is performed.

As described above, the processing of the open / close routine 100 when the reduction operation is performed continuously is completed, and the processing returns to step 31 in FIG.

As can be seen from the above description, when the user wants to open a desired document file, the user presses the button 10 and moves the data processing apparatus in the left-right direction or the up-down direction with the button pressed, and the file belongs. Scroll through the screen containing the top-level folder, and continue with the icons in this folder until they are centered on the screen. Scrolling
The operation is continued while the user continues to move the data processing apparatus by pressing the button 10. After that, the user releases the button 10, presses it again, and continues to move the data processing apparatus in the forward direction with the button 10 pressed to enlarge the screen.

The screen enlargement is continued while the user continues to move the data processing apparatus by pressing the button 10.

When the enlargement ratio is increased to a predetermined enlargement ratio α,
The folder is opened. Thereafter, the screen is scrolled in the same manner as described above until the icon of the desired document file is displayed on the screen. Thereafter, the screen is similarly enlarged and the document file is opened.

For example, in FIG. 8, icons L1 and L2 of folders belonging to a certain folder and icons F1 and F2 of a plurality of files are displayed on a screen 80. The folder icon L1 is located at the center of the screen. When an enlargement operation according to the present embodiment is performed on this screen, a screen 81 is obtained. In this screen, the folder icon L1 is displayed at the maximum magnification rate α. If you perform further enlargement operation on this screen, this folder will be opened,
As shown in the screen 82, the icons F3 to F6 of a plurality of files belonging thereto and the icon L3 of a lower folder
Is displayed. For example, if the file of the icon F5 is a desired file, after scrolling the icon F5 of the document file to the center of the screen and continuing to move the data processing apparatus forward again to enlarge the screen to a predetermined enlargement ratio, , The document file is opened.

On the other hand, when the opened document file is to be closed, the button 10 is pressed again, and in this state, the data processing apparatus is continuously moved backward to reduce the screen. The screen reduction continues while the user continues to move the data processing apparatus by pressing the button 10. When the reduction ratio reaches a predetermined reduction ratio β, the file is closed.
When it is desired to display a folder / file icon screen including a folder higher than the folder to which the folder / file icon screen displayed after being closed, the button 10 is released once and pressed again. When the screen is further reduced to a predetermined reduction ratio while continuing to move in the backward direction, a folder / file icon screen including the icon of the upper folder is displayed. By repeating this operation, a folder / file icon screen including the icon of the upper folder is displayed.

If there is an anchor in the opened document file, the button 10 is pressed again, the anchor is scrolled to the center of the screen in this state, and then the button 10 is pressed again. When the screen is enlarged to a predetermined enlargement ratio by continuously moving the device in the forward direction, the file of the link destination indicated by the anchor is opened. To return to the link source from the linked open file, use the button 10
Is pressed again, and in this state, the data processing apparatus is continuously moved in the backward direction to reduce the screen to a predetermined reduction ratio.

As described above, in the present embodiment, scrolling performed by the conventional scroll bar can be naturally and easily realized simply by moving the data processing apparatus in the left and right directions. Further, opening or closing of a folder or file conventionally performed by a pen can be naturally and easily realized only by moving the data processing apparatus in the front-rear direction. Here, as the icon of the document file, for example, if an icon for displaying an image of the first page of the document is used, the icon becomes more easily understood.

In the present embodiment, as described below,
By clicking the button 10, the enlargement / reduction or the continuation of the scroll can be eliminated. That is, when the button 10 is single-clicked, the shortcut / repetition routine 300 uses the stored operation history information to execute the same operation as the immediately preceding operation again by the operation amount at that time. In the case of a double click, the last operation is executed with a larger operation amount than in the case of a single click, as in the case of a single click. More specifically, in the case of a double-click, the same result as when the previous operation is repeated several times is executed, for example, until the maximum enlargement ratio or the minimum reduction ratio of the screen is obtained. The same operation as the operation is executed by changing the operation amount.

In FIG. 4, at step 33, button 1
When the pressed state of 0 is determined to be a click, the type of the click is detected (step 34). That is, it is determined whether the click has been performed only once (single click) or twice (double click) (step 34). This determination can be easily made by counting the number of clicks. Thereafter, the shortcut / repetition routine 300 is started.

Referring to FIG. 7, in this routine 300, the recorded operation history information is read (step 30).
1). First, it is determined whether the type of clock detected in step 34 (FIG. 4) is a single click or a double click (step 302).
Repeat the previous operation as follows. That is, based on the operation history information, the type of the previous operation is expanded,
It is determined whether the operation is reduction or scrolling (step 303). If the previous operation is enlargement, the screen is enlarged by a certain rate, and the enlargement and data representing this certain rate are stored as operation history information (step 304). Thereafter, the process proceeds to the open / close routine 100. Therefore, if the user once moves the data processing apparatus in the forward direction and then single-clicks the button 10, the same result as moving the data processing apparatus can be obtained. Thereafter, if the user repeats the operation of single-clicking the button 10, it is possible to obtain an enlargement ratio corresponding to the enlargement ratio α, and to execute the steps after step 103 after the determination in step 101 (FIG. 4). The same result can be obtained as if the processing device were kept moving forward. That is, when the single click of the button 10 is also used, the moving amount of the terminal itself is small.

If it is determined in step 303 that the previous operation was a reduction, the screen is reduced by a certain rate, and the reduction and data representing this certain rate are stored as operation history information (step 305). ). Thereafter, the process proceeds to the open / close routine 100. Therefore,
Also in this case, if the user repeats the operation of single-clicking the button 10, the same result as when the data processing apparatus is continuously moved backward can be obtained. Step 3
When it is determined that the previous operation is scrolling by the determination at 03, the same scroll (the same scroll direction and amount) as the scroll indicated by the stored operation history information is executed, and the scrolling is performed as the operation history information. The data indicating the scroll direction and the scroll amount is stored (step 306). After that, the open / close routine 10
Move to 0. Therefore, in this case as well, the user presses button 1
By repeating the operation of single-clicking on 0, it is possible to obtain the same result as when the data processing apparatus is moved in the horizontal direction or the vertical direction and scrolled.

On the other hand, when it is determined in step 302 that the click of the button 10 is a double click, the maximum enlargement ratio α or the minimum reduction ratio β is determined as follows.
The previous operation (enlargement or reduction) is executed until is obtained. Hereinafter, this process may be referred to as a shortcut process. That is, it is determined based on the operation history information whether the type of the previous operation is enlargement or reduction (step 307). When the previous operation is enlargement, the screen is enlarged until the enlargement ratio becomes α% (step 3).
08), the process proceeds to the open / close routine 100. Therefore, in the open / close routine 100, steps after step 103 are immediately executed. Therefore, as with the single click, button 10
When the double-clicking is used together, it is possible to continuously move the data processing apparatus in the forward direction and obtain the same result as when the screen is enlarged until the enlargement ratio α% is reached, with a small movement of the data processing apparatus. it can. In addition, in the case of a single click, you must repeat the single click,
Although the enlargement rate of the enlargement rate α cannot be obtained, in the case of double-clicking, the same enlargement rate α can be obtained by a single double-click. Therefore, the number of operations of the button 10 can be reduced as compared with the case of the single click.

If the previous operation is a reduction, the screen is reduced until the reduction ratio becomes β% (step 309), and the process proceeds to the open / close routine 100. Therefore,
In this case, the screen is also reduced to the reduction ratio β by a single double click.

As is apparent from the above description, according to the present embodiment, when the data processing device is moved up, down, left and right, the screen scrolls accordingly, and when the data processing device is moved back and forth, the screen is enlarged or reduced. I do. In this way, the user can operate the data processing device with a very natural operation feeling that he experiences everyday. In addition, since operations such as opening / closing of files etc. are automatically performed with enlargement / reduction, the user operates files by consistent operation of moving the data processing device without releasing the hand from the terminal. it can.

<Second Embodiment of the Invention> In the processing of FIG.
While the user presses the button 10 and keeps moving the data processing apparatus, enlargement, reduction, and scroll processing are continued.
However, for example, when the user wants to enlarge the image, the user pushes the button 10 and raises the device in front of the device. However, when a sufficient magnification cannot be obtained by one operation, the button 10 is released once and the device is lowered. It is necessary to press the button 10 again to raise the device to the front, which may be troublesome.
The present invention also provides the method shown in FIG.

The RAM 4 is provided with speed detection temporary storages (Rx, Ry, Rz) for temporarily storing the X-direction acceleration, the Y-direction acceleration, and the Z-direction acceleration, respectively. Unlike step 31 in FIG. 4, when the button 10 is not pressed, in step 40, the speed detection temporary storage (Rx, Ry, R
Clear all z) to 0. As in FIG. 4, it is determined whether or not the absolute value of the moving speed in the front-rear direction is equal to or greater than a predetermined threshold Tz (step 41). When the absolute value is equal to or greater than the threshold Tz, Tz is set as the Z-direction acceleration Rz in the speed detection temporary storage. (Step 42). The code is given according to the detected speed. It is determined whether the absolute value of the moving speed in the vertical direction or the absolute value of the moving speed in the horizontal direction is equal to or more than a certain threshold value Ty or Tx, respectively (step 43). Temporary memory (R
x or Ry) (step 44). Thus, in the speed detection temporary storage, the speed exceeding the threshold for the first time when the button 10 is pressed is held until the button 10 is released.

In the determination and processing including step 35 and step 37 after step 33 in FIG. 4, the speed obtained in step 32 is directly used in FIG. 4, but the speed detection temporary storage (Rx, Ry, Rz) is not used. Operate on values. Thus, after pressing the button 10, the user can continue to operate the screen according to the motion detected first until the button 10 is released. The operations in FIGS. 4 and 9 are as follows.
The acceleration in the X direction, the acceleration in the Y direction, and the acceleration in the Z direction can be independently set to any one. As a result, a flexible operation can be set according to the user's preference and usage scene.

<Third Embodiment> In the present embodiment, a video camera 12 is used instead of the acceleration sensor 8, and a camera control unit 13 is used instead of the sensor control unit 9. That is, as shown in FIG. 10, a camera 12 is attached to the front of the data processing apparatus, and a camera control unit 13 for processing the output of the camera 12 is connected to the bus 2 as shown in FIG. The image from the camera 12 has several dozen frames /
At a speed of 2 seconds, via the camera control unit 13 and the bus 2
It is taken into PU1 or directly taken into RAM4. The file operation processing program 140 is provided with a calculation routine for detecting the moving speed of the data processing device based on the video signal output from the camera 12. This calculation routine detects, for example, a change in the position of a matched point by performing image matching for each frame, and thereby calculates the moving speed in the front, rear, left, right, and up and down directions of the matched point in the video. Then, it is output as the moving speed of the data processing device. As image processing for detecting the matched points, for example, Nagao and Yasuiin, “Image Processing and Recognition” (Shokodo, pp. 164-164)
170 (1993). When the speed is detected from the acceleration as in the first embodiment, when the data processing device is moved at a constant speed, the speed may not be detected correctly. However, if the speed is directly detected as in the present embodiment, such a problem is eliminated.

<Modifications> The present invention is not limited to the above embodiments, but can be realized as various modifications without departing from the scope of the present invention. The following shows an example of such a modification.

(1) A speed sensor may be used instead of the acceleration sensor 8. At this time, a signal representing the moving speed in the X, Y, and Z directions can be obtained by the sensor, so that the speed calculation processing (step 3 (FIG. 4)) in the above embodiment can be omitted. The device can be made smaller than when the above video camera is used.

(2) Instead of the camera 12, a position sensor may be used. The processing amount can be reduced as compared with the case where the above video camera is used.

(3) If both the acceleration sensor 8 and the camera 12 are used, more accurate detection is possible.

(4) Instead of part or all of the programs used in the first embodiment, a logic circuit for executing the processing executed by them or equivalent processing may be used. For example, a logic circuit that executes the processing of this step may be used instead of the speed calculation step 32.

[0071]

As is apparent from the above description, according to the present invention, a data processing apparatus capable of easily performing a pointing operation such as selecting a part of a screen, such as selecting a file icon, particularly a portable computer Is obtained.
In addition, a data processing device, particularly a portable computer, which can continue the screen operation while performing the screen operation using the movement of the data processing device without increasing the movement amount of the data processing device, can be obtained.

[Brief description of the drawings]

FIG. 1 shows an example of the appearance of a data processing device according to the present invention.

FIG. 2 shows a block diagram of the circuit of the device of FIG.

FIG. 3 shows a structure of a program used in the apparatus shown in FIG.

FIG. 4 shows a flowchart of a user interface program in a program used in the apparatus of FIG. 1;

FIG. 5 is a flowchart of a scroll routine in a user interface program.

FIG. 6 is a flowchart of an open / close routine in a user interface program.

FIG. 7 is a flowchart of a shortcut repetition routine in a user interface program.

FIG. 8 is a view for explaining a file icon selection function in the apparatus of FIG. 1;

9 shows another flow chart of a user interface program in a program used for the apparatus of FIG. 1. FIG.

FIG. 10 shows an example of the appearance of another data processing apparatus according to the present invention.

FIG. 11 shows a schematic circuit block diagram of the device of FIG. 9;

[Explanation of symbols]

2 Bus, 3 Memory, 4 Work memory, 5 Display device, 6 Display control unit, 7 Digitizer, 8 Acceleration sensor, 10 Push button, 11 Pen, 12 Video camera, 13 Camera Control unit.

Continuation of the front page (72) Inventor Yuji Sato 1-280 Higashi Koikekubo, Kokubunji-shi, Tokyo F-term in Central Research Laboratory, Hitachi, Ltd. 5B019 DB10 HD20 5E501 AA03 AA04 AC20 AC33 BA05 CA04 CB14 CB20 EA01 EA05 EA06 EB05 FA04 FB02 FB03 FB04 FB12 FB32 FB45

Claims (18)

[Claims] 1. A data processing device, comprising: a processing device; a storage device for storing a program and a plurality of files; a display device having a display screen provided on a front portion of the data processing device; A movement detecting means capable of detecting forward or backward movement of the data processing device; and a folder or a folder belonging to one of a plurality of folders having a plurality of hierarchical structures to which the plurality of files belong. At least one icon corresponding to the file and user operation processing means for switching and displaying the contents of at least one of the plurality of files on the display screen in response to a user operation The user operation processing means responds to the movement detection means detecting the forward movement of the data processing device. Opening any one of the files or folders corresponding to any one of the icons displayed on the display screen, and responding to the detection of the backward movement of the data processing device by the movement detecting means. A device having an open / close means for closing one of the opened files or folders. 2. The apparatus according to claim 1, wherein said open / close means includes an icon corresponding to any one of the files in the center of said display screen in response to the movement detection means detecting the forward movement of said data processing device. When displayed on the section, the one file is opened and its contents are displayed on the display screen, and in response to the movement detection means detecting the backward movement of the data processing device, When the contents of the opened one file are displayed on the display screen, any one of file opening and closing means for closing the one file, and in response to the detection of the forward movement, When the icon corresponding to one folder is displayed at the center of the display screen, open that one folder and When the lower folder or any one of the files belongs to the folder as the contents of the folder, at least one icon corresponding to the lower folder or the at least one file is displayed on the display screen, and the backward When the contents of the opened folder are displayed on the display screen in response to the detection of the movement of
2. The data processing apparatus according to claim 1, further comprising folder open / close means for closing the one opened folder and displaying the contents of a higher-order folder including the folder. 3. The user operation processing means includes means for enlarging an image displayed on the display screen in response to the movement detection means detecting the forward movement of the data processing device. A means for reducing the image displayed on the display screen in response to the movement detection means detecting the backward movement of the data processing device, wherein the open / close means comprises: After the display screen is enlarged to a predetermined enlargement ratio, in response to the movement detection means detecting the forward movement of the data processing device, and after the display screen is reduced to a predetermined reduction ratio, 3. The data processing apparatus according to claim 2, wherein the data processing apparatus responds to the detection of backward movement of the data processing apparatus by the movement detecting means. 4. The enlargement means enlarges an image displayed on the display screen while holding the icon displayed closest to the center position of the display screen at the center position, and the reduction means comprises: 4. An image displayed on the display screen is reduced while keeping an icon displayed closest to the center position of the display screen at the center position.
The data processing device according to claim 1. 5. The movement detection means includes movement detection means capable of detecting movement of the data processing device in the front-rear direction, the left-right direction, and the up-down direction, respectively. In response to the movement detection means detecting the movement of the data processing device in the left-right direction or the up-down direction, scrolling the screen displayed on the display screen in a direction related to the detected movement direction. 3. The data processing device according to claim 1, further comprising scroll means for executing an operation. 6. An acceleration sensor provided in the data processing device, the acceleration sensor detecting a longitudinal acceleration of the movement of the data processing device, and an acceleration detected by the acceleration sensor.
2. The data processing apparatus according to claim 1, further comprising a movement determining unit configured to determine whether the data processing apparatus has moved in the front-rear direction. 7. The movement determining means, based on an acceleration detected by the acceleration sensor,
7. The data processing apparatus according to claim 6, further comprising: means for determining a moving speed of the data processing apparatus in the front-rear direction; 8. A moving camera, comprising: a video camera provided in the data processing device; and a means for detecting a moving speed of the data processing device in the front-rear direction based on a video signal output from the video camera. The data processing device according to claim 1, further comprising: 9. The program stored in the storage means includes a user operation processing program, wherein the user operation processing program is programmed to implement the user operation processing means and the open / close means. Item 2. The data processing device according to Item 1. 10. A data processing device, comprising: a processing device; a storage device for storing a program and a plurality of files; a display device having a display screen provided on a front portion of the data processing device; Movement detection means capable of detecting forward or backward movement of the data processing device; and any one of the other folders or any one of a plurality of folders having a plurality of hierarchical structures to which the plurality of files belong At least one icon corresponding to one file, and user operation processing means for switching and displaying the contents of at least one of the plurality of files on the display screen in response to an operation by a user. The user operation processing means has a function that the movement detection means detects that the data processing device has moved forward. In response, when the content of one opened file is displayed on the display screen, and the anchor corresponding to any one of the linked files is displayed at the center of the display screen, the link destination of the linked file is displayed. The file is opened and its contents are displayed on the display screen. In response to the movement detecting means detecting the backward movement of the data processing device, the file at the link destination is closed and the link is closed. A data processing device further comprising link means for opening the original file. 11. A data processing device, comprising: a processing device; a storage device for storing a program and a plurality of files; a display device having a display screen provided on a front portion of the data processing device; Movement detection means having an operation button operable by a user, capable of detecting movement of the data processing device in at least one of a front-rear direction, a left-right direction, and a vertical direction; Switching to at least one other folder belonging to one of a plurality of folders having a plurality of hierarchical structures or the content of at least one file among the plurality of files in response to an operation by a user to the display screen And a user operation processing means for displaying the data by the movement detection means. A first operation execution unit that executes one of scroll, enlargement, and reduction operations on the screen displayed on the display screen in response to the detection of the movement in the direction; Means for storing the type of operation executed immediately before by the operation executing means, and the same as the executed operation based on the stored type of operation in response to the click of the operation button. A data processing device comprising: a second operation executing unit that executes an operation. 12. The storage means further stores an operation amount of an operation executed immediately before by the operation execution means, and the second operation execution means executes the operation when the click is a single click. 12. The data processing apparatus according to claim 11, further comprising means for executing the same operation as the operation by the stored operation amount. 13. The data processing apparatus according to claim 11, wherein said second operation execution means has means for continuously executing the same operation as the executed operation when said click is a double click. 14. The storage means further stores an operation amount of an operation executed immediately before by the operation execution means, and the second operation execution means executes the operation when the click is a single click. 2. A means for executing the same operation as the operation by the stored operation amount.
3. The data processing device according to 3. 15. The movement detecting means includes movement detecting means capable of detecting the movement of the data processing device in the front-rear direction, the left-right direction, and the up-down direction. Magnifying means for executing an operation of enlarging a screen displayed on the display screen in response to detection of the forward movement of the data processing device by the movement detecting means; and Reducing means for executing an operation of reducing a screen displayed on the display screen in response to detection of a backward movement of the processing device; and a lateral direction or up and down movement of the data processing device by the movement detecting means. In response to detecting a direction change,
12. The data processing device according to claim 11, further comprising: a scroll unit configured to execute a scroll operation on a screen displayed on the display screen in a direction related to the detected moving direction. 16. A data processing device, comprising: a processing device; a storage device for storing a program and a plurality of files; a display device having a display screen provided on a front portion of the data processing device; A program recording medium storing a program to be used by being incorporated in a data processing device having movement detection means capable of detecting forward or backward movement of the data processing device. What is programmed to run. A plurality of icons corresponding to a plurality of folders having a plurality of hierarchical structures to which the plurality of files belong; a plurality of icons corresponding to the plurality of files; In response, the display is switched to the display screen, and in response to the detection of the forward movement of the data processing device by the movement detection means, the display corresponds to any one of the icons displayed on the display screen. One of the files or folders to be opened is opened, and the opened file or folder is closed in response to the movement detecting means detecting the backward movement of the data processing device. 17. A data processing device, comprising: a processing device; a storage device for storing a program and a plurality of files; a display device having a display screen provided on a front portion of the data processing device; Used in a data processing apparatus having operation buttons operable by a user and movement detection means capable of detecting movement of the data processing apparatus in at least one of the front-back direction, the left-right direction, and the up-down direction. And a program recording medium storing a program to be executed, the program being programmed to execute the following processing. Respond to a user operation with a plurality of icons corresponding to a plurality of folders having a plurality of hierarchical structures to which the plurality of files belong, a plurality of icons corresponding to the plurality of files, and contents of any one of the files. The display is switched to the display screen, and in response to the movement detection means detecting the movement of the data processing device in any direction, the screen displayed on the display screen is scrolled. Performing one of the operations of enlargement or reduction, storing the type of operation performed immediately before, and responding to the click of the operation button, based on the stored type of operation, Perform the same operation as the one performed above. 18. A data processing device, comprising: a processing device; a storage device for storing a program and a plurality of files; a display device having a display screen provided on a front portion of the data processing device; A program recording medium storing a program to be used by being incorporated in a data processing device having movement detection means capable of detecting forward or backward movement of the data processing device. What is programmed to run. Belongs to one of a plurality of folders having a plurality of hierarchical structures to which the plurality of files belong, at least one icon corresponding to any one of the other folders or any one of the files, and In response to an operation by a user, the content of at least one file is switched to and displayed on the display screen, and in response to the forward movement of the data processing device being detected by the movement detection means, When the contents of one opened file are displayed on the display screen and the anchor corresponding to any one of the linked files is displayed in the center of the display screen, the linked file is opened. The contents are displayed on the display screen, and the movement detection means detects that the data processing device has moved backward. In response to, as well as close the link destination of the file, to open the link source file.