JP4381761B2 - Display control apparatus, display control method, program, and recording medium - Google Patents

Description

  The present invention generates a virtual screen for virtually displaying the image when an image having a size exceeding the physical resolution of the display device is displayed on the display device, and displays a predetermined area in the generated virtual screen. The present invention relates to a display control device, a display control method, a program, and a recording medium that are set as a display area to be displayed on the device and control image display on the display device.

  Normally, when displaying an image having a size exceeding the size that can be displayed on the display device (size determined based on the set resolution), the display control device displays only a partial area of the image on the screen. Yes. For this reason, in the conventional display control apparatus, when it is desired to display the contents outside the displayed area, the contents outside the range are displayed by vertical and horizontal scrolling.

  However, in the above conventional display control device, the contents outside the display area are not known until it is moved by scrolling, so that it cannot move efficiently and is difficult to use.

  In addition, a method has been proposed in which a display that exceeds the size that can be displayed on the display device is displayed using enlarged display and reduced display, and the display is moved to a region desired by the operator.

There exists Unexamined-Japanese-Patent No. 2001-56746 (patent document 1) in this kind of literature.
JP 2001-56746 A

  However, in the method using the enlargement / reduction function as in Patent Document 1 described above, when the operator wants to move and display a desired area outside the display area, in addition to the enlargement / reduction operation, vertical and horizontal scrolling is performed. There is a problem that it is necessary to perform the accompanying movement operation and is very complicated.

The present invention has been made to solve the above problems, an object of the present invention, a display area to be displayed in the display effective region of the display device to display the first display area currently displayed By moving visually to the second display area with enlargement / reduction, the positional relationship between the first display area and the second display area after switching is confirmed, and the second after switching. to provide a display control apparatus and display control method, and program and recording medium can be easily moved to the display area of the.

The present invention controls the display of a display effective area displayed on a display device by visually moving from a first display area to a second display area, which is a display destination area, with enlargement / reduction. In the display control device, when the operator designates a cursor at a switching instruction position for performing an instruction to switch to the second display area that is the display movement destination area, the display is displayed in the display effective area of the display device. A switching instruction unit that issues a switching instruction to switch the display area from the first display area to the second display area; and the second display area that is instructed to be switched as a display movement destination area by the switching instruction unit. the center point and the center point of the first display area, and calculating means for calculating the center point of the third display region including both region of the first display area and the second display region, wherein According to the switching instruction by the replacement indicating means, expansion and moves the display effective region to be displayed on said display device, from the first display area, to a third display area centered on the point calculated by said calculation means Subsequently to the enlargement and movement processing, the display effective area displayed on the display device is displayed from the third display area to the second display centered on the center point of the second display area. And a control means for controlling the area to be changed by reduction and movement processing.

According to the present invention, a display area to be displayed in the display effective region of the display device, in the second display area to be displayed from the first display area currently displayed, to move visual with scaling Thus, it is possible to easily move to the second display area after switching while confirming the positional relationship between the first display area and the second display area after switching.

[First Embodiment]
FIG. 1 is a block diagram showing the configuration of an information processing apparatus to which the display control apparatus of the present invention can be applied.

  In the figure, reference numeral 101 denotes a CPU, which reads various programs and data such as a basic control program and application programs stored in the ROM 110 and the external storage device 109 via the bus 105 and develops them in a work area provided in the RAM 104. And execute control of each unit included in the information processing apparatus.

  Further, the CPU 101 executes screen display processing, which will be described later, in accordance with an instruction input from the input device 106, reads designated screen data from the external storage device 109, and displays virtual screen display data based on the screen data in the RAM 104. Generate within. Then, the CPU 101 generates display information for displaying a predetermined area of the generated virtual screen in the display VRAM 102 and outputs it to the display device 103, and displays an image in the display area on the display screen.

  Further, the CPU 101 executes a process of moving the display area or enlarging / reducing the display area in accordance with an operation on the pointing device 107 and the enlargement / reduction input apparatus 108, and displays the processed display area on the display device 103.

  The display VRAM 102 stores display information that is actually displayed on the display device 103.

  The display device 103 includes a display screen such as a CRT (Cathode Ray Tube) or an LCD (Liquid Crystal Display), and executes display according to display information input from the CPU 101.

  The RAM 104 is a work area for developing various programs when the CPU 101 executes the above processing according to various programs, a work area for developing data related to various processes executed by the CPU 101, and a virtual for storing display data of a virtual screen. Used as a display area or the like.

  The input device 106 includes a keyboard (not shown) having character keys, numeric keys, and various function keys, a pointing device (mouse, pen input device, touch panel, etc.) 107, and an enlargement / reduction input device (provided on the mouse). Rotating and pressing members such as wheel buttons and jog dials) 108 and the like.

  When the keyboard is operated, the input device 106 outputs a press signal corresponding to the pressed key to the CPU 101, and when an operation is performed on the pointing device 107, a click signal or a display is displayed. Relative position coordinate data indicating the coordinates of a point designated on the screen is output to the CPU 101, and when the enlargement / reduction input device is operated, a scroll (jog dial) rotation signal (upward or downward) or A scroll button (jog dial) pressing signal (release → press, press → release) is output to the CPU 101.

  The external storage device 109 includes a storage medium made up of various magnetic and optical recording media such as a hard disk (HD), SRAM, various memory cards, magneto-optical disk, CD-ROM, DVD, FD, or semiconductor memory. The external storage device 109 stores a basic control program executed by the CPU 101, various applications, data related to these programs, and the like. The external storage device 109 outputs various programs and data stored in the external storage device 109 to the CPU 101 in accordance with a read request from the CPU 101. Note that various programs and data in the external storage device 109 are stored in a format that can be read and executed by the CPU 101.

  Note that the CPU 101 can execute a plurality of application programs in parallel.

  An information processing apparatus to which the display control apparatus of the present invention can be applied is, for example, an apparatus including a display device 103 such as a personal computer, a workstation, a mobile phone, and a PDA, a pointing device 107, and an enlargement / reduction input device. Any device may be used.

<Reduction and enlargement process with movement to non-display area>
First, the reduction process accompanied by the movement to the non-display portion will be described with reference to FIGS.

  2 and 3 are schematic views showing display examples in the display control apparatus of the present invention. FIGS. 2A and 3A show the entire virtual display memory area in the RAM 104 shown in FIG. 2 (b) and 3 (b) show display screens displayed on the display device 103 shown in FIG.

  In FIG. 2A, an area surrounded by a white frame 201 indicates a display effective range and corresponds to a display range on an actual display device. That is, the area indicated by the display effective range 201 is stored in the display VRAM 102 and displayed on the display device 103.

  In FIG. 2B, 202 indicates the position of the pointer of the pointing device 107.

  First, as shown in FIG. 2B, the wheel button (jog dial) of the input / output device 108 for enlargement / reduction with the pointer of the pointing device 107 at the lower right position 202 (near “task 1”) on the screen. And the like are rotated by several notches (scrolling upward (first direction)) to enlarge the display effective range by several steps around the pointer of the pointing device 107 (from the display effective range 201 in FIG. 2A). 3 (a), the entire display is reduced by several stages (to the size desired by the operator) (from the display in FIG. 2 (b) to the display in FIG. 3 (b)). Shrink like). At this time, as indicated by 302 in FIG. 3B, the pointer position of the pointing device 107 is the center of the screen.

  The reduction process accompanied by the movement to the non-display portion described above corresponds to steps S105 and S106 in the flowchart shown in FIG.

  Next, an enlargement process involving movement to a non-display portion will be described with reference to FIGS.

  4 and 5 are schematic views showing display examples in the display control apparatus of the present invention. FIGS. 4A and 5A show the entire virtual display memory area in the RAM 104 shown in FIG. FIGS. 4B and 5B show display screens displayed on the display device 103 shown in FIG.

  In FIG. 4A, a region surrounded by a white frame 401 indicates a display effective range and corresponds to a display range on an actual display device. That is, the area indicated by the display effective range 401 is stored in the display VRAM 102 and displayed on the display device 103.

  In FIG. 4B, reference numeral 402 denotes the position of the pointer of the pointing device 107. Reference numeral 403 indicates the position of the pointer after movement.

  First, as shown in FIG. 4B, the pointer is moved to a position 403 (near “task 2”) from a state where the pointer of the pointing device 107 is at the center position 402 on the screen (see FIG. 8 described later). Corresponding to steps S101 to S104 in the flowchart shown). With this pointer at the position 403, the wheel button (jog dial) of the enlargement / reduction input device 108 is rotated several notches in the reverse direction (rotated downward (second direction opposite to the first direction)). As a result, the effective display range is reduced by several steps around the pointer of the pointing device 107 (from the effective display range 401 in FIG. 4A to the effective display range 501 in FIG. 5A). The entire display is enlarged in several stages (to the size desired by the operator) (from the display shown in FIG. 4B to the display shown in FIG. 5B). At this time, as indicated by 502 in FIG. 5B, the position of the pointer of the pointing device 107 is the center of the screen.

  The enlarging process accompanied by the movement to the non-display portion described above corresponds to steps S107 and S108 in the flowchart shown in FIG.

  As described above, the operations of the “reduction process with movement to the non-display portion” described with reference to FIGS. 2 and 3 and the “enlargement process with movement to the non-display portion” described with reference to FIGS. By continuously operating the operation, the display area on the display device 103 is changed from the display near “task 1” shown in FIG. 2B to “task 2” shown in FIG. 5B. Can be moved to a display near.

  That is, the user rotates the wheel button (jog dial) or the like, and reduces the entire screen until the entire place where the user wants to move is seen. Next, the user moves the position of the cursor such as a mouse on the reduced screen. A series of easy and simple (no sense of incongruity) that the user moves to the center of the desired position, and finally the user rotates the wheel button (jog dial) etc. to enlarge it to the desired size (easy to see). By the operation, the image can be moved and displayed to a desired position.

<Pop-up processing for hidden parts>
Next, the hop-up process for the non-display portion will be described with reference to FIGS.

  6 and 7 are schematic views showing display examples in the display control apparatus of the present invention, and FIGS. 6A and 7A show the entire virtual display memory area in the RAM 104 shown in FIG. FIGS. 6B and 7B show display screens displayed on the display device 103 shown in FIG.

  In FIG. 6A, an area surrounded by a white frame 601 indicates a display effective range and corresponds to a display range on an actual display device. That is, the area indicated by the display effective range 601 is stored in the display VRAM 102 and displayed on the display device 103.

  In FIG. 6B, 602 indicates the position of the pointer of the pointing device 107.

  First, as shown in FIG. 6B, with the pointer of the pointing device 107 at the position 602, the wheel button (jog dial) of the input / output device for enlargement / reduction is pressed (fixed). In the meantime, the information of the display effective range 601 (original display effective range) at this time is stored in the work area in the RAM 104, and the display effective range (display effective range at the time of pop-up) is expanded to the entire virtual display memory area. By performing (enlarge from the display effective range 601 in FIG. 6A to the entire virtual memory area 701 in FIG. 7A), the entire image (virtual screen) is reduced and displayed (from the display in FIG. 6B). The entire image is reduced and displayed as shown in FIG. 7B). At this time, however, a frame is displayed in the original display effective range (frame 702 in FIG. 7B).

  The processing described above corresponds to steps S109 and S110 in the flowchart shown in FIG.

  Further, when the wheel button (jog dial) is released from the state where the wheel button (jog dial) of the input / output device for enlargement / reduction is pressed, the display effective range is returned to the original display effective range (FIG. 7A). By returning the entire virtual memory area 701 to the original effective display range 601 shown in FIG. 6A, the display is enlarged to the original size (from the overall reduced display of FIG. 7B to FIG. 6). The original display of b) is enlarged and displayed).

  That is, when the user presses a wheel button (jog dial) or the like, the entire virtual screen in the memory is displayed, and then the screen of the original size is displayed by releasing the wheel button (jog dial) or the like that the user has pressed. By performing a series of easy and simple operations (no sense of incongruity), it is possible to instantly check the entire image and instantly return to the original enlarged display even during enlarged display.

  The processing described above corresponds to steps S111 and S112 in the flowchart shown in FIG.

  Hereinafter, with reference to the flowchart of FIG. 8, the above-described reduction / enlargement process with movement to the non-display part and the pop-up process procedure of the non-display part will be described.

  FIG. 8 is a flowchart showing an example of a first control processing procedure in the display control apparatus of the present invention, and corresponds to a reduction / enlargement processing involving movement to a non-display portion and a pop-up processing procedure for a non-display portion. Note that the processing in this flowchart is executed based on a program stored in the external storage device 109 by the CPU 101 shown in FIG. Moreover, S101-S112 show each step. Furthermore, in this flowchart, the pointing device 107 is described as a mouse, and the enlargement / reduction input device 108 is described as a mouse wheel button.

  First, when a mouse event occurs, the processing of this flowchart is started. In step S101, it is determined whether or not the generated mouse event includes a coordinate horizontal movement, and is determined to include a coordinate horizontal movement. In this case, in step S102, the amount of movement in the horizontal direction is added to the abscissa (X coordinate) of the current mouse pointer, and the process proceeds to step S103.

  On the other hand, if it is determined in step S101 that the generated mouse event does not include a coordinate horizontal movement, the process directly proceeds to step S103.

  Next, in step S103, it is determined whether or not the generated mouse event includes a coordinate vertical movement. If it is determined that the coordinate vertical movement is included, the vertical movement amount is determined in step S104. Is added to the ordinate (Y coordinate) of the current mouse pointer, and the process proceeds to step S105.

  On the other hand, if it is determined in step S103 that the generated mouse event does not include movement in the coordinate vertical direction, the process directly proceeds to step S105.

  Next, in step S105, it is determined whether or not the generated mouse event includes an upward scrolling (first direction) ("1" notch) of the wheel button, and if an upward scrolling is included. If it is determined, in step S106, a process of enlarging the display effective range by “1” steps around the current position is performed (FIG. 2 → FIG. 3), and the process proceeds to step S107. In this embodiment, since the mouse event is generated for every “1” notch, when the wheel button is scrolled by a plurality of notches, the processing of step S106 is executed by the number of notches, and the display effective range is set. It is moved and enlarged (reduced on the display screen) step by step (for example, the movement rate of the “1” notch and the enlargement rate are set to “several 10%”).

  On the other hand, if it is determined in step S105 that the generated mouse event does not include scrolling in the upward direction (first direction) of the wheel button, the process directly proceeds to step S107.

  Next, in step S107, it is determined whether or not the generated mouse event includes scrolling in the downward direction (second direction) of the wheel button. If it is determined that the scrolling includes downward scrolling, In step S108, the effective display range is reduced by “1” steps centering on the current position (FIG. 4 → FIG. 5), and the process proceeds to step S109. In the present embodiment, since the mouse event is generated for every “1” notch, when the wheel button is scrolled by a plurality of notches, the processing of step S108 is executed by the number of notches, and the display effective range is set. It is moved and reduced (enlarged on the display screen) step by step (for example, the movement rate of “1” notch and the reduction rate is “several 10%”).

  On the other hand, if it is determined in step S107 that the generated mouse event does not include scrolling in the downward direction (second direction) of the wheel button, the process proceeds directly to step S109.

  Next, in step S109, it is determined whether or not the generated mouse event includes a state change of the wheel button (released (not pressed) → pressed (pressed)), and the state change (released → pressed). ), The display effective range (original display effective range) at this time is stored in the work area in the RAM 104 and a new display effective range (display effective at the time of pop-up) is determined in step S110. The range is set to the entire virtual display memory area, and the entire image is popped up (however, the original display effective range is displayed in a frame) (FIG. 6 → FIG. 7), and the process proceeds to step S111.

  On the other hand, if it is determined in step S109 that the generated mouse event does not include a wheel button state change (released → pressed), the process proceeds directly to step S111.

  Next, in step S111, it is determined whether or not the generated mouse event includes a state change of the wheel button (pressed (pressed state) → released (not pressed) state), and the state change (pressed → released). ), The display effective range is returned to the original display effective range stored in the work area in the RAM 104, and the pop-up enlargement of the entire image is returned to the original state in step S112. (FIG. 7 → FIG. 6), the process is terminated.

  On the other hand, if it is determined in step S111 that the generated mouse event does not include a wheel button state change (pressing → release), the process is terminated.

  By the above processing, even for a device having only a small display screen such as a mobile phone or a PDA, an image having a size exceeding the size that can be displayed on the display device (size based on physical resolution) is displayed. The virtual display space can be displayed and the pointer in the pointing device can be centered around the virtual display space, which can be easily moved and displayed visually with enlargement and reduction. be able to.

  In addition, the entire display screen can be easily displayed by the hop-up function of the entire display, and the position of the currently expanded work can be confirmed while always being aware of the entire virtual screen.

  Therefore, even if the device has only a small display screen, such as a mobile phone or PDA, the region that is not displayed on the display device is visually moved with enlargement / reduction to perform work without a sense of incongruity. be able to.

[Second Embodiment]
In the first embodiment, the configuration in which the display area displayed on the display device is moved with enlargement / reduction by rotating the wheel button of the mouse or the like has been described. However, the user switches tasks. Therefore, the display area displayed on the display device may be automatically moved to the display area corresponding to the switched task with enlargement / reduction. The embodiment will be described below.

<Screen movement process by task switching from task bar>
Next, screen movement processing by task switching from the task bar will be described with reference to FIGS. It should be noted that “task” and “running program” are used in the same meaning.

  FIG. 9 is a schematic diagram showing a display screen displayed on the display device 103 shown in FIG.

  First, FIG. 9A shows a state where “task 1” is selected and the screen of the program of “task 1” is displayed.

  In the state of FIG. 9A, the pointer of the pointing device 107 is moved to the position 901 and clicked. When “task 2” is selected on the task bar, “task 1” is displayed as shown in FIG. 9B. As shown in FIG. 9C, only the program for “task 2” is displayed. The screen is gradually enlarged and displayed so that is displayed.

  FIG. 10 is a schematic diagram showing the entire virtual display memory area in the RAM 104 shown in FIG.

  In FIG. 10, ar0 indicates the current effective display range and corresponds to FIG. Pt1 indicates the center of the current task.

  ar2 indicates a display effective range (corresponding to the destination task) necessary for displaying the destination task, and corresponds to FIG. 9C. Pt2 indicates the center of the display effective range ar2.

  ar1 indicates a display effective range necessary for displaying both the current task and the destination task, and corresponds to FIG. 9B. Pt3 indicates the center of the display effective range ar1.

  FIG. 11 is a flowchart showing an example of a second control processing procedure in the display control apparatus of the present invention, and corresponds to a screen movement processing procedure by task switching from the task bar. Note that the processing in this flowchart is executed based on a program stored in the external storage device 109 by the CPU 101 shown in FIG. S201 to S204 indicate each step.

  First, when a task switching event for switching from “task 1” to “task 2” as shown in FIG. 9A occurs, the processing of this flowchart is started, and in step S201, the current task (task 1) is changed. From the center (pt1) and the center (pt2) of the destination task (task 2), the display effective range (ar1) and center (pt3) necessary for both display are calculated, and the current display magnification is displayed as the original display. The magnification (rt1) is stored in the work area of the RAM 103.

  Next, in step S202, the display effective range is set to the size of the display effective range (ar1) for both displays while moving from the center (pt1) of the current task to the center (pt3) for both displays. Enlarge (reduced display on the display device 103). Note that this movement and enlargement processing is performed so as to display a moving image so that the movement and enlargement can be confirmed. For example, the movement is performed stepwise by dividing into a predetermined distance, and the processing is performed by stepwise enlargement by dividing into a predetermined magnification (for example, the movement and enlargement processing are performed stepwise by “several 10%”). The state in which the process of step S202 is completed corresponds to FIG.

  Next, in step S203, the display effective range (ar2) of the destination task is calculated from the center (pt2) of the destination task and the original display magnification (rt1).

  Next, in step S204, while moving the center of the display effective range from the center for both displays (pt3) to the center of the destination task (pt2), the display effective range of the destination task (ar2) The effective display range is reduced toward the display (enlarged display on the display device 103). Note that this movement and reduction processing is performed so as to display a moving image so that the movement and reduction can be confirmed. For example, the movement is performed stepwise by dividing into a predetermined distance, and the processing is performed by stepping down at a predetermined magnification (for example, the movement and reduction processing are performed step by step by “several 10%”). The state where the process of step S204 is completed corresponds to FIG.

  Note that the task switching instruction does not have to be performed using the task bar. For example, switching using a keyboard operation or a function provided by the OS may be used.

  Through the above processing, even if the device has only a small display screen such as a mobile phone or a PDA, the user can switch tasks by pressing a task button other than the current task on the task bar at the bottom of the display screen. By simply performing one simple operation, the CPU 101 reduces the video to a size that can display both the current task and the moved task, and displays the enlarged image for the moved task. As the task is switched, the task display before and after switching is visually moved with scaling, so that when switching tasks, the display position of the task before and after switching on the entire virtual screen can be easily confirmed. , It can be easily moved to the display area corresponding to the task after switching.

  Although one embodiment has been described above, the present invention can take an embodiment as, for example, a system, apparatus, method, program, or recording medium, and specifically includes a plurality of devices. The present invention may be applied to a system including a single device.

  In addition, all the structures which combined the said 1st Embodiment and 2nd Embodiment are also contained in this invention.

  Hereinafter, differences between Patent Document 1 shown in the background art column and the display control apparatus shown in the present embodiment will be described.

  First, in the method using the enlargement / reduction function disclosed in Patent Document 1, there is no description about the coordinate position serving as a reference for enlargement / reduction.

  In recent years, it has become possible to perform enlargement / reduction display processing within an application window using a mouse wheel button, etc., but all of these techniques fix the coordinate position that is the reference for enlargement / reduction. (Usually fixed at the top left of the window).

  Therefore, in the above-mentioned Patent Document 1, it is considered that the coordinate position serving as a reference for enlargement / reduction is fixed.

  In such a display control device of Patent Document 1 in which the coordinate position serving as a reference for enlargement / reduction is fixed, when the operator wants to display a desired area outside the display area, in addition to the enlargement / reduction operation, It is necessary to perform a moving operation with vertical scrolling and horizontal scrolling, which is a very complicated operation.

  On the other hand, the display control device shown in the present embodiment can perform moving display with enlargement / reduction with the pointer of the pointing device as the center in the virtual display space. In addition, it is possible to perform the moving display work with less operation and without a sense of incongruity.

  In addition, the display control apparatus shown in the present embodiment easily displays the entire virtual screen by the hop-up function of the entire display, and always confirms the position of the currently expanded work while being conscious of the entire virtual screen. be able to.

  Furthermore, the display control apparatus shown in the present embodiment visually moves the task display before and after switching with the enlargement / reduction in accordance with the switching of the task. The display position of the task before and after switching on the entire screen can be easily confirmed.

  Therefore, the display control device shown in the present embodiment can move and display an image exceeding the size that can be displayed on the display device, even if the device has only a small display screen such as a mobile phone or a PDA. There is an excellent effect that it can be performed.

  Thus, the display control device shown in the present embodiment can solve the problems of the conventional technology.

  The points described above are considered matters to be particularly noted when considering the difference between the display control apparatus shown in the present embodiment and the above-described Patent Document 1.

  As described above, according to each embodiment of the present invention, the CPU 101 instructs the pointing device 107 in response to an instruction to enlarge or reduce the display area displayed on the display device 103 by the enlargement / reduction input device 108. The display area set in the virtual screen is controlled to be enlarged or reduced using the predetermined coordinates in the displayed area as a reference point, so that the apparatus has only a small display screen such as a mobile phone or a PDA. However, it is possible to easily move and display the image on the virtual screen with the enlargement / reduction, centering on the designated coordinates by the first instruction means, and to perform work without feeling uncomfortable.

  In addition, the CPU 101 changes the display area displayed on the display device 103 from the first display area, which is a display area having a size not exceeding the physical resolution of the display device 103, to the virtual resolution exceeding the physical resolution of the display device 103. In response to a pop-up transition instruction for transition to the second display area that is the display area of the entire screen, the display area displayed on the display device 103 is controlled to be changed from the first display area to the second display area, The display area to be displayed on the display device is changed from the second display area to the first display area in response to a pop-up cancellation instruction for canceling the second display area and returning the first display area to the first display area. Even if the device has only a small display screen, such as a mobile phone or PDA, the entire virtual screen can be easily displayed with the hop-up function. It is possible to be aware of to make sure the position of the work that is currently being expanded.

  Further, the CPU 101 displays a display area to be displayed on the display device in response to a program switching instruction (task switching instruction) for switching an active program from the first program to the second program among a plurality of programs to be executed. Since the change control is performed by moving processing with enlargement / reduction from the first display area corresponding to the first program to the second display area corresponding to the second program, a small display such as a mobile phone or a PDA Even if the device has only a screen, when switching the active program by the user, it can easily check the display position corresponding to the program before and after switching in the entire virtual screen and respond to the task after switching. It can be easily moved to the display area.

  Therefore, when displaying an image having a size larger than the display size of the physical resolution of the display device, it is possible to smoothly move the virtual display region used.

  The configuration of a data processing program that can be read by the display control apparatus according to the present invention will be described below with reference to the memory map shown in FIG.

  FIG. 12 is a diagram illustrating a memory map of a recording medium (storage medium) that stores various data processing programs that can be read by the display control apparatus according to the present invention.

  Although not specifically shown, information for managing a program group stored in the recording medium, for example, version information, creator, etc. is also stored, and information depending on the OS on the program reading side, for example, a program is identified and displayed. Icons may also be stored.

  Further, data depending on various programs is also managed in the directory. In addition, when a program or data to be installed is compressed, a program to be decompressed may be stored.

  The functions shown in FIGS. 8 and 11 in the present embodiment may be performed by a host computer by a program installed from the outside. In this case, the present invention is applied even when an information group including a program is supplied to the output device from a recording medium such as a CD-ROM, a flash memory, or an FD, or from an external recording medium via a network. Is.

  As described above, a recording medium recording software program codes for realizing the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU or MPU) of the system or apparatus stores the recording medium in the recording medium. It goes without saying that the object of the present invention can also be achieved by reading and executing the programmed program code.

  In this case, the program code itself read from the recording medium realizes the novel function of the present invention, and the recording medium storing the program code constitutes the present invention.

  As a recording medium for supplying the program code, for example, a flexible disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, DVD-ROM, magnetic tape, nonvolatile memory card, ROM, EEPROM, A silicon disk or the like can be used.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an OS (operating system) or the like running on the computer based on the instruction of the program code. It goes without saying that a case where the function of the above-described embodiment is realized by performing part or all of the actual processing and the processing is included.

  Furthermore, after the program code read from the recording medium is written in a memory provided in a function expansion board inserted in the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the case where the CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

  Further, the present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. It goes without saying that the present invention can also be applied to a case where the present invention is achieved by supplying a program to a system or apparatus. In this case, by reading the recording medium storing the program represented by the software for achieving the present invention into the system or apparatus, the system or apparatus can enjoy the effects of the present invention. .

  Furthermore, by downloading and reading out a program represented by software for achieving the present invention from a server, database, etc. on a network using a communication program, the system or apparatus can enjoy the effects of the present invention. It becomes.

  In the above-described embodiment, a mouse wheel button or jog dial has been described as an example of an enlargement / reduction input device. However, even in a device that does not include a mouse wheel button or jog dial, for example, a predetermined key is directed upward ( Explanation will be made with reference to steps S105 to S108 in FIGS. 2 to 5 and 8 by assigning a key different from the predetermined key to the scroll in the first direction and assigning a key different from the predetermined key to the scroll in the downward direction (second direction). The present invention can be applied as a display control apparatus that can execute the “reduction / enlargement process with movement to a non-display portion”.

  Further, by assigning the pressing of a predetermined key to the pressing of a mouse wheel button or jog dial, even in a device that does not have a mouse wheel button or jog dial, steps S109 to S109 in FIG. The present invention can be applied as a display control apparatus capable of executing the “non-display portion pop-up process” described using S112.

  Furthermore, even if the device does not have a mouse wheel button or jog dial, if the device can switch tasks by operating a predetermined key or the like, “task switching from task bar” described with reference to FIGS. It can be applied as a display control apparatus capable of executing “screen movement processing by”.

It is a block diagram which shows the structure of the information processing apparatus which can apply the display control apparatus of this invention. It is a schematic diagram which shows the example of a display in the display control apparatus of this invention. It is a schematic diagram which shows the example of a display in the display control apparatus of this invention. It is a schematic diagram which shows the example of a display in the display control apparatus of this invention. It is a schematic diagram which shows the example of a display in the display control apparatus of this invention. It is a schematic diagram which shows the example of a display in the display control apparatus of this invention. It is a schematic diagram which shows the example of a display in the display control apparatus of this invention. It is a flowchart which shows an example of the 1st control processing procedure in the display control apparatus of this invention. It is a schematic diagram which shows the display screen displayed on the display apparatus shown in FIG. It is a schematic diagram which shows the whole virtual display memory area in RAM shown in FIG. It is a flowchart which shows an example of the 2nd control processing procedure in the display control apparatus of this invention. It is a figure explaining the memory map of the recording medium (storage medium) which stores the various data processing program which can be read by the display control apparatus which concerns on this invention.

Explanation of symbols

101 CPU
102 VRAM for display
103 Display device 104 RAM
105 Bus 106 Input Device 107 Pointing Device 108 Input Device for Enlargement / Reduction 109 External Storage Device 110 ROM

Claims (9)

In a display control apparatus for controlling display of a display effective area displayed on a display device by visually moving from a first display area to a second display area which is a display movement destination area with enlargement / reduction ,
The display area displayed in the display effective area of the display device when the operator indicates a cursor at the switching instruction position for instructing switching to the second display area that is the display movement destination area, Switching instruction means for giving a switching instruction to switch from the first display area to the second display area;
From the central point of the second display area and the central point of the first display area, which are instructed to be switched as the display movement destination area by the switching instruction means, the first display area and the second display area Calculating means for calculating a center point of a third display area including both areas;
According to the switching instruction by the switching instruction means, the display effective region to be displayed on said display device, from the first display area, expanded to a third display area centered on the point calculated by said calculating means and Following the enlargement and movement processing, the display effective area displayed on the display device is moved from the third display area to the second display area centered on the center point of the second display area . Control means for controlling the display area to change by reduction and movement processing;
A display control device comprising: The control means changes the display effective area displayed on the display device from the first display area to the first display area and the second display area in response to a display area switching instruction by the switching instruction means. The display effective area displayed on the display device is changed from the third display area to the second display area after being changed stepwise by a stepwise enlargement and movement process to a third display area including both 2. The display control apparatus according to claim 1, wherein control is performed so as to change stepwise by stepwise reduction and movement processing.   The control means enlarges the display effective area while moving the display effective area from the center of the first display area to the center of the third display area during the enlargement and movement processing, and reduces and reduces the display effective area. 2. The control of reducing the display effective area while moving the display effective area from the center of the third display area to the center of the second display area during the movement process. 2. The display control device according to 2. The switch instructing means explicitly designates a second display area to which the display is moved from the currently displayed first display area via the display screen of the display device. the display control apparatus according to any one of claims 1 to 3, characterized in that the switching instruction. The display control device includes:
It further has execution means capable of executing a plurality of programs in parallel,
The switching instruction means performs a switching instruction to switch an active program from a first program to a second program among a plurality of programs executed by the execution means,
The control means changes the display area to be displayed on the display device from the first display area corresponding to the first program to the second program corresponding to the second program in response to the switching instruction by the switching instruction means. After changing to the third display area including both the display area and the first display area by the enlargement and movement process, the display area is changed from the third display area to the second display area by the reduction and movement process. the display control device according to any one of claims 1 to 4, wherein the controller controls the. 6. The display control apparatus according to claim 5, wherein the second display area controlled by the control means is controlled to display only a display area corresponding to the second program. In a display control apparatus that controls display of a display effective area displayed on a display device by visually moving with enlargement / reduction from a first display area to a second display area that is a display destination area In the display control method,
The display area displayed in the display effective area of the display device when the operator indicates a cursor at the switching instruction position for instructing switching to the second display area that is the display movement destination area. A switching instruction step for giving a switching instruction to switch from the first display area to the second display area;
From the center point of the second display area and the center point of the first display area that are instructed to be switched as the display movement destination area by the switching instruction step, the first display area and the second display area A calculation step of calculating a center point of a third display area including both areas;
In response to the switching instruction in the switching instruction process, the display effective area displayed on the display device is expanded from the first display area to a third display area centered on the point calculated by the calculation process. Following the enlargement and movement processing, the display effective area displayed on the display device is moved from the third display area to the second display area centered on the center point of the second display area . A control process for controlling the display area to be changed by reduction and movement processing;
A display control method comprising: A program for causing a computer to execute the display control method according to claim 7 . A storage medium storing a computer-readable program for causing a computer to execute the display control method according to claim 7 .

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