JPH06324668A - Screen display method and display device - Google Patents

Abstract

PURPOSE:To easily confirm the display end of a display area before moving on a screen after moving by displaying a mark on a boundary in the display area before moving when a part of display data before moving is included in the display area after moving. CONSTITUTION:The overlapped range of the display areas after scrolling and before scrolling is recognized based on the contents of respective screen display position registers 12b and 12c. When a part of the display screen before scrolling is included in the display screen after scrolling, a boundary line is outputted to be displayed on the boundary part. In such a case, boundary line forming data is written in an attribution memory part 14B under the control of a CPU 11, and read out and controlled in synchronism with a video RAM 14A. Furthermore, the display data on the boundary line and the display data which is read out from the video RAM 14A and formed to be a dot pattern are synthesized in a synthesizing part 15A, and the display data including the boundary line forming data is transferred and displayed on a display device 16 through a display controller 15B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen display method and device applied to a display device which handles document information such as text and images.

[0002]

2. Description of the Related Art Conventionally, in devices such as text editors and word processors that have a function of displaying document information,
When the screen is moved in the direction of the next page or the previous page while the document information in the display area for one screen in the document to be displayed is displayed, the display for one screen follows the operation position. The document information of the area is displayed.

At this time, conventionally, when the display area in the display target document is moved in the direction of the next page or the previous page, on the screen after the movement, the display end of the display area before the movement included in the same screen. In order to recognize, the content of the document at the display edge is stored, and the line with the document content at the display edge is found on the screen after the movement. Can be recognized.

However, the display end of the display area before the movement cannot be easily recognized on the screen after the movement, except when the display content of the display end before the movement has a special feature, and therefore, for editing work or the like. There was a problem in terms of workability.

Further, even in a multi-window environment, when a scroll-up or scroll-down instruction is given, the display position is simply changed and redisplayed, and the display end before the movement is displayed on the screen after the movement. Not easily recognizable.

[0006]

As described above, conventionally, when the display area in the document to be displayed is moved to the next page or the previous page, the display end of the display area before the movement is moved to the screen after the movement. The above cannot be easily recognized, and thus there is a problem in workability in editing work.

The present invention has been made in view of the above circumstances,
When a part of the display data before moving is included in the display area after moving, a specific mark is displayed on the boundary of the display area before moving and the display edge of the display area before moving is displayed on the screen after moving. It is an object to provide an easily recognizable screen display method.

Further, according to the present invention, in a device such as a text editor or a word processor, when a display area in a document to be displayed is moved in the next page direction or the previous page direction, the display end of the display area before the movement is displayed. An object of the present invention is to provide a display device having a guide display function that can be easily recognized on the screen after moving.

[0009]

SUMMARY OF THE INVENTION The present invention is a display system having a screen moving function in which a display screen can be arbitrarily moved on a virtual large screen. When it is included in the display area of, a specific mark is displayed on the boundary of the display area before the movement.

To give a concrete example, in the display state shown in FIG. 6A, when an operation instruction of "next page" is given, the state moves to the state shown in FIG. 6B, separately from the cursor indicating the editing position. , A cursor (mark) indicating the boundary position between the previous screen and the boundary position (between the bottom line before the operation and the top line after the operation)
Display M. Also, in the display state of FIG.
When there is an operation instruction on the "previous page", the state moves to the state of (b) in the figure, and in addition to the cursor indicating the editing position, the boundary position with the previous screen (the display top line before operation and the display bottom line after operation) Between)
A cursor (mark) M indicating the boundary position is displayed at.

In the multi-window environment, as shown in FIGS. 8 and 9, the display state of (a) is changed to the display state of (b) according to the scroll up / down operation instruction, and the previous screen is displayed. A cursor (mark) M is displayed at each boundary position between and.

Further, in a device having a continuous scroll function for up, down, left and right, or a skip function, when scrolling down with respect to the display screen of FIG. 4A, waiting for the end of the continuous scroll operation or continuous skip operation. As shown in FIG. 7B, the display area boundaries after the movement and before the movement are displayed by, for example, boundary lines. Similarly, FIG. ), In the case of left scrolling, the display area boundaries after the movement and before the movement are displayed by, for example, boundaries as shown in FIG.

The present invention also provides a display device for displaying a virtual screen.
In a device with a screen movement function that can arbitrarily display a screen display area, when the display area after movement includes the display area before movement, the display information before movement included in the display area after movement Is displayed by changing the contrast or blinking to distinguish it from the display information newly displayed after the movement, and the display information before the movement is clearly displayed in a specific display form.

Further, according to the present invention, the virtual screen is displayed on a display device.
In a device with a screen movement function that can arbitrarily display a screen display area, when the display area after movement includes a part of the display area before movement, before the movement included in the display area after movement It is characterized in that the area before the movement included in the display area after the movement is displayed in a specific display form by changing the contrast or the display color of the area.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an apparatus according to an embodiment of the present invention. In addition, here, the video RAM (VRA
Take as an example the type of hardware in which the contents of M) are displayed directly on the display (DISP).

In FIG. 1, reference numeral 11 is a CPU that controls the entire system. Here, during the scroll processing,
According to the program stored in the main memory 12, the display processing of the display area boundary after / before the screen movement accompanying the scroll as shown in FIGS. 2 and 3 is executed. Further, in the display screen skip processing, the display processing of the display area boundary after / before the screen movement accompanying the skip as shown in FIG. 5 is executed.

A main memory (ME) 12 is provided with a work area for the CPU 11, a storage area for executing programs, and the like.
M) and the memory controller (M-CONT) 13
The read / write access control is performed under the control of the text data (TXD) storage area 1 here.
2a is provided, and screen display position registers 12b and 12c for storing a display address (DAO) indicating the display position before the screen movement and a display address (DAN) indicating the display position after the screen movement, respectively.

Reference numerals 14A and 14B are display memories, and 14A is a video RAM for storing a text code.
(VRAM) and 14B are attribution memory units (ATT-RAM) that store attribution data. Here, in order to explain the function of displaying the boundary line indicating the display area boundary before and after the movement according to the present invention on the display screen, the attribution memory unit (ATT-R).
AM) 14B is shown as independent. This attribution memory section (ATT-RAM) 14B
Under the control of the CPU 11, the generation data of the boundary line indicating the boundary of the display area after the movement and before the movement is written, and the read data is controlled by the same address control in synchronization with the video RAM (VRAM) 14A.

Reference numerals 15A and 15B are components of a display control unit, and 15A is a video RAM (VRA).
M) Attribution memory unit (ATT-RA)
M) is a synthesizing unit (COMP) for synthesizing the display data of the boundary line according to the boundary data read from 14B, and 15B
Is a display controller (DISP-CON) that controls display for outputting the display data output from the synthesizing unit (COMP) 15A to the display device (DISP) 16.
T). In addition, here, the video RAM (VRAM) 1
The hardware for generating a font pattern (dot pattern) peculiar to the code from the character code read from 4A is omitted.

A keyboard (K) has various function keys including a scroll key and a skip key and a data input key for inputting text data.
B) and 18 are keyboard controllers (KBC) for controlling the key input of the keyboard (KB) 17.

Reference numeral 19 denotes a hard disk device (H which stores text data, application programs, etc.).
D), 20A is a floppy disk drive (FDD) used for storage of text data and the like and external transfer, and 2
Reference numeral 0B is a floppy disk controller (FDC) that controls the drive of the floppy disk drive 20A.

FIG. 2 is a flow chart showing a processing procedure of a key input processing including a display processing of a display area boundary after / before the screen movement accompanying the screen scroll in the first embodiment of the present invention. 6 is a flowchart showing a processing procedure of a key input determination processing in FIG.

FIG. 4 shows a screen display example in the first embodiment. FIG. 4A shows a display example of a screen (previous screen) which is a scroll operation target, and FIG. Display example of the screen (rear screen) when the screen (screen of FIG. (A)) is scrolled down with two lines left, and FIG. (C) is a screen table when the previous screen is scrolled up with three lines left The example shown in FIG. 6D shows a screen display example when the previous screen is left scrolled by 7 digits and right scrolled, and the FIG. 8E shows the screen display example when the previous screen is left scrolled by 7 digits and right scrolled. .

In FIGS. 4 (b) to 4 (e), Md,
Mu, Mr, and Ml are boundary lines indicating the area boundaries between the display screen before scrolling (previous screen) and the display screen after scrolling (rear screen), respectively.

The operation of the first embodiment of the present invention will be described with reference to FIGS. Display device (DI
When a scroll in the designated direction is performed by operating the cursor keys when the text screen as shown in FIG. 4A is displayed on the SP) 16, the continuous scroll operation in the designated direction is completed. At this time, when a part of the display data before the scroll (movement) is included in the display area after the scroll, the boundary as shown in FIGS. Line (Md, Mu,
Mr, Ml) is displayed and output.

The processing operation in this case will be described with reference to the flow charts shown in FIGS. Keyboard (KB)
In the key input determination processing associated with the key operation on 17, it is determined whether or not the operated key is a key for instructing scrolling (steps A1 to A4 in FIG. 2).

Here, when the operated key is the down cursor key, it is determined whether or not the cursor has reached the bottom line on the screen (steps B1a and B2a in FIG. 3). On this occasion,
When the cursor has not reached the bottom line on the screen, the cursor moves in response to the pressing of the above key (FIG. 3, step B).
2a ・ N).

Further, when the same key is continuously operated (continuous operation) after the cursor reaches the bottom line on the screen, scroll processing (scroll down) associated with the key operation is executed ( Figure 3 Step B2a ・ Y ～ B4
a).

In this scroll processing, the screen display out of the display addresses (here, the display start address) stored in the screen display position registers 12b and 12c in the main memory (MEM) 12 before the current scroll operation is performed. The display address of the position register 12c is updated as the display screen is scrolled (steps A5 and A6 in FIG. 2).
It should be noted that the screen display position registers 12b and 12c are set to the screen display position registers 12b and 12c each time the scroll process including the border line drawing process is completed.
The same display address (here, the display start address) indicating the screen display position at that time is stored (see steps A11 and A14 in FIG. 2).

At this time, when the above-mentioned key (here, the cursor down key) is continuously operated (continuous operation),
The above-mentioned screen scroll processing and the address update processing of the screen display position register 12c accompanying the screen scroll are repeatedly executed (steps A7, A8, A5, A in FIG. 2).
6,…).

When the operation of the above-mentioned key (here, the down cursor key) is canceled and the continuous scroll operation is completed, the display after scrolling and before scrolling is performed based on the contents of the respective screen display position registers 12b and 12c. When the overlapping range of areas is recognized and a part of the display screen before scrolling (moving) is included in the display screen after scrolling, a boundary line (Md) as shown in FIG. It is displayed and output (steps A8, A12, A13 in FIG. 2).

At this time, under the control of the CPU 11, the boundary line generation data is written in the attribution memory unit (ATT-RAM) 14B, and the video RAM (VRA).
M) The reading is controlled in synchronization with 14A. Further, the display data of the boundary line read from the attribution memory unit (ATT-RAM) 14B and the video RAM (VRA).
M) The display data read out from 14A and formed into a dot pattern is combined by the combining unit (COMP) 15A, and the display data including the boundary line generation data is displayed by the display controller (D).
Display device (DIS) via ISP-CONT 15B
P) 16 and displayed. As a result, as described above, the display screen including the border line is displayed on the display device (DISP) 1.
6 is displayed.

Further, in this case, the screen display position register 1
The address value of the screen display position register 12c is set in 2b (step A14 in FIG. 2), and when the scroll operation is performed again, the value of the screen display position register 12c is updated and controlled along with the display scroll ( 2 step A5, A6, ...).

When the up cursor key is operated in place of the down cursor key, the scroll processing shown in steps B1b to B4b in FIG. 3 is executed, and a part of the display screen before scrolling is displayed in the display screen after scrolling. , The boundary line (Mu) as shown in FIG. 4 (c) is displayed and output (steps A8, A12, A13 in FIG. 2).

When the right cursor key is operated, the scroll processing shown in steps B1c to B4c of FIG. 3 is executed, and when a part of the display screen before scrolling is included in the display screen after scrolling, A boundary line (Mr) as shown in FIG. 4 (d) is displayed and output at the boundary portion, and when the left cursor key is operated, the scroll processing shown in steps B1d to B4d in FIG. When a part of the display screen of FIG. 4 is included in the display screen after scrolling, a boundary line (Ml) as shown in FIG. 4 (e) is displayed and output at the boundary part (steps A8, A12, A13 in FIG. 2). ).
When the scroll up key is operated, the scroll processing shown in steps B1e to B4e of FIG. 3 is executed, and when a part of the display screen before scrolling is included in the display screen after scrolling, the boundary portion thereof A boundary line (Md) as shown in FIG. 4B is displayed and output, and when the scroll down key is operated, the scroll processing shown in steps B1f to B4f in FIG. 3 is executed to display the screen before scrolling. When a part of the above is included in the display screen after scrolling, a boundary line (Mu) as shown in FIG. 4C is output at the boundary part.

Further, in the continuous scroll operation, even when the push key of the scroll operation is switched to another key (for example, when the down cursor key is switched to the up cursor key), each screen display position is the same as above. Register 12
Based on the contents of b and 12c, the overlapping range of the display area after scrolling and before scrolling is recognized and scrolling (moving)
When a part of the previous display screen is included in the display screen after scrolling, a boundary line is displayed and output at the boundary part (see FIG. 2).
(Steps A9 and A10), the address value of the screen display position register 12c is set in the screen display position register 12b upon completion of the operation (step A11 in FIG. 2).

In this way, the display device (DISP) 16
When a scroll in the designated direction is performed in accordance with the cursor key operation when the text screen as shown in FIG. 4 (a) is displayed, when the continuous scroll operation in the designated direction ends, When a part of the display data before the scroll (movement) is included in the display area after the scroll, the boundary portion with the display area before the scroll is shown in FIG.
Boundaries (Md, Mu, Mr, Ml) as shown in (e)
) Is displayed and output, the display end of the display area before scrolling can be easily recognized on the screen after scrolling.

Next, referring to FIGS. 5 to 7, the second embodiment of the present invention will be described.
An example will be described. The first embodiment described above is the display processing of the boundary line accompanying the continuous scrolling in units of rows and columns.
The second embodiment will be described by exemplifying a boundary line display process accompanying a skip process such as a page switching operation in which the display area is moved in units of a plurality of lines (or columns) at a time by one operation.

FIG. 5 is a flow chart showing the processing procedure of the second embodiment, and FIGS. 6 and 7 are diagrams showing examples of display of the boundary line accompanying the page switching operation in the same embodiment. Here, the border display is shown by taking the screen display position changing process according to the operation instruction of the next page / previous page as an example.

The boundary line display processing operation in the second embodiment will now be described. When a "next page" operation instruction is given when the text screen as shown in FIG. 6A is displayed (steps S1 and S2 in FIG. 5), a new display area is determined under the control of the CPU 11. (Fig. 5, step S3),
The text screen of the new display area is displayed (Fig. 5).
At the same time as step S4), it is determined whether the new display area includes a part of the previous display area (step S5 in FIG. 5), and the new display area includes a part of the previous display area. When this is the case, a boundary line is developed at the boundary portion (step S6 in FIG. 5), and the text screen including the boundary line (M) as shown in FIG. 6B is displayed on the display device (D).
ISP) 16.

In this process, when the CPU 11 receives an operation instruction of "next page" from the operation input unit such as the keyboard 11 or mouse, it first refers to the value of the screen display position register 12b (or 12c), Confirm a new display area,
A text screen according to the new display area is displayed, and the display address (here, the display start address) of the new display area is set in the screen display position register 12c, and the contents of the display position registers 12b and 12c are set. Based on the above, it is determined whether or not the display area after the movement includes a part of the display area before the movement (steps S1 to S in FIG. 5).
Five ).

When the display area after the movement includes a part of the display area before the movement, the boundary line data is included in the area corresponding to the above-mentioned area boundary portion of the attribution memory unit (ATT-RAM) 14B. (Fig. 5 Step S
6).

As a result, the boundary line data of the attribution memory unit (ATT-RAM) 14B is changed to the video RA.
The boundary data is read in synchronization with the display data output of the M (VRAM) 14A, and the boundary data is the video RAM (VRAM).
The display data read from 14A and combined with the dot patterned display data in the combining unit (COMP) 15A is output to the display device (DISP) 16 through the display controller (DISP-CONT) 15B, and is then displayed in the display device (DISP).
At 16, a text screen including a boundary line (M) as shown in FIG. 6B is displayed.

If a "previous page" operation instruction is given when the text screen as shown in FIG. 7A is displayed (steps S1 and S2 in FIG. 5), a new control is made under the control of the CPU 11. Display area is confirmed (step S3 in FIG. 5),
The text screen of the new display area is displayed (Fig. 5).
At the same time as step S4), it is determined whether the new display area includes a part of the previous display area (step S5 in FIG. 5), and the new display area includes a part of the previous display area. When this is the case, a boundary line is developed at the boundary portion (step S6 in FIG. 5), and a text screen including the boundary line (M) as shown in FIG. 7B is displayed on the display device (D).
ISP) 16.

In this way, when the display position is changed, the boundary position with the screen before the change is clearly indicated by the boundary line (M), so that the man-machine interface can be improved and the document inputting and editing work can be performed. Etc. can be executed quickly and efficiently.

8 and 9 show examples of screen displays when the boundary position display function according to the present invention is applied to the scroll-up / scroll-down processing mechanism in a multi-window environment. , M is a boundary line for clearly indicating the old display range (old display area) included in the new display range (new display area), SU is a scroll up operation instruction button, SD is a scroll down operation instruction button, and EV is It is an elevator cursor showing a display range (display area) in a virtual large screen.

FIG. 8 shows a scroll-up process in a multi-window environment. When the range displayed on the previous screen is included in the display range of the new screen, the boundary line of each display range is displayed. A display example is shown.

Here, when the scroll-up operation instruction button (SU) is operated while the text screen as shown in FIG. 8A is displayed, a new display area is confirmed and the new display area is confirmed. The text screen of the display area is displayed, and it is judged whether or not the new display area contains part of the previous display area, and the new display area contains part of the previous display area. When this is done, the boundary line is pattern-developed at the boundary portion, and a text screen including the boundary line (M) as shown in FIG. 8B is displayed.

FIG. 9 is a scroll-down process in a multi-window environment. When the range displayed on the previous screen is included in the display range of the new screen, the boundary line of each display range is displayed. A display example is shown.

Here, when the scroll down operation instruction button (SD) is operated while the text screen as shown in FIG. 9A is displayed, a new display area is confirmed and the new display area is confirmed. The text screen of the display area is displayed, and it is judged whether or not the new display area contains part of the previous display area, and the new display area contains part of the previous display area. When this is done, the boundary line is pattern-developed at the boundary portion, and a text screen including the boundary line (M) as shown in FIG. 9B is displayed.

As described above, also in the scroll-up / down processing under the multi-window environment, if the range displayed on the previous screen is included in the display range of the new screen, the display range is displayed. Since the boundary of is clearly shown, the man-machine interface can be improved in a multi-window environment, and document input and editing work can be performed quickly and efficiently.

In the above-described embodiment, the boundary line is continuously displayed until the next movement of the display area. However, for example, the boundary line is displayed only for a fixed time, or an unspecified key input. It is also possible to adopt a configuration in which the boundary line is temporarily displayed until a specific condition is reached, such as by canceling the display of the boundary line by an operation. At this time, the attribution memory unit (ATT-RAM) 1 is monitored under the control of the CPU 11 by monitoring the display time of the boundary line or by determining the satisfaction of a specific condition.
This can be achieved by deleting the boundary generation data stored in 4B.

In the above embodiment, the VRAM is used.
Although the system provided with the character display of the format is taken as an example, it is also applicable to the system provided with the character display of the bitmap format provided with the bitmap memory. At this time, under the control of the CPU 11, the dot image of the boundary line is developed on the bitmap memory together with other images such as text, and a display screen including the boundary line is displayed on the display device (DISP) 16.

Further, in the above-described embodiment, the line (boundary line) is drawn at the boundary portion between the old and new display ranges, but the present invention is not limited to this, and other patterns such as specific symbols and marks may be displayed. Is also possible. Alternatively, a configuration in which the display information before the movement included in the display area after the movement is displayed in a specific display mode, a configuration in which the area before the movement included in the display area after the movement is displayed in a specific display mode, etc. can be realized. Is. For example, as a configuration in which the area before movement is displayed in a specific display form, when it is determined that the display area after movement includes a partial area before movement, the CPU 11 displays the display controller (DISP-CONT). Send a specific display control command to 15B and display controller (DISP-CONT)
Under the control of 15B, it is also possible to display the display area before the movement while changing the contrast, the background, or the display color.

Further, the present invention is not limited to devices such as a text editor and a word processor, but when the display position is changed, the workability is improved by indicating the boundary position with the screen before the change. Applicable to equipment.

[0056]

As described above in detail, according to the present invention, when a part of the display data before the movement is included in the display area after the movement, the display end of the display area before the movement is displayed on the screen after the movement. Since the above can be easily recognized, the man-machine interface can be improved, and document inputting and editing work can be performed quickly and efficiently.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a key input processing procedure in the first embodiment of the present invention.

FIG. 3 is a flowchart showing a processing procedure of key input determination processing in FIG.

FIG. 4 is a diagram showing an example of screen display in the first embodiment.

FIG. 5 is a flowchart showing a processing procedure of a second embodiment of the present invention.

FIG. 6 is a view showing a display example of a boundary line accompanying a page switching operation in the second embodiment.

FIG. 7 is a diagram showing a display example of a boundary line associated with a page switching operation in the second embodiment.

FIG. 8 is a diagram showing a screen display example when the boundary position display function according to the present invention is applied to a scroll-up / scroll-down processing mechanism in a multi-window environment.

FIG. 9 is a diagram showing a screen display example when a boundary position display function according to the present invention is applied to a scroll-up / scroll-down processing mechanism in a multi-window environment.

[Explanation of symbols]

11 ... CPU, 12 ... Main memory (MEM), 12a ... Text data (TXD) storage area, 12b, 12c ...
Screen display position register, 13 ... Memory controller (M
-CONT), 14A ... Video RAM (VRAM), 1
4B ... Attribution memory (ATT-RA
M), 15A ... Compositing unit (COMP), 15B ... Display controller (DISP-CONT), 16 ... Display device (D)
ISP), 17 ... Keyboard (KB), M, Md, Mu
, Mr, Ml ... Boundary line, SU ... Scroll up operation instruction button, SD ... Scroll down operation instruction button, EV ... Elevator cursor.

Claims (17)

[Claims] 1. In a device having a screen movement function capable of arbitrarily displaying a virtual screen in a display area for one screen of a display device, part of display data before movement is included in the display area after movement. A screen display method characterized by displaying a specific mark at the boundary with the display area before the movement. 2. An apparatus having a screen moving function capable of arbitrarily displaying a virtual screen in a display area for one screen of a display device, wherein the virtual screen is provided in an elevator display area provided on a predetermined side of the display area. In addition to displaying the current position of the display area inside the display area, when a part of the display data before moving is included in the display area after moving, a specific mark is displayed at the boundary with the display area before moving. Screen display method characterized by. 3. In a device having a screen moving function capable of arbitrarily displaying a virtual screen in a display area for one screen of a display device, when the display area after the movement includes display information before the movement, A screen display method for displaying display information before movement included in a display area after movement in a specific display form. 4. In a device having a screen movement function capable of arbitrarily displaying a display area for one screen of a display device in a virtual screen, the display area after the movement includes a part of the display area before the movement. A screen display method characterized by displaying a pre-movement region included in the post-movement display region in a specific display form when the display is moved. 5. An apparatus having a screen movement function capable of arbitrarily displaying a display area for one screen of a display device in a virtual screen, and operating means for moving the display area in an arbitrary direction on the virtual screen. , When the display area moves downward,
A means for determining whether or not the display area after the movement includes the display information at the bottom edge before the movement, and, when the display information at the bottom edge before the movement is included in the display area after the movement, A display device comprising means for displaying a position in a specific display form. 6. An apparatus having a screen movement function capable of arbitrarily displaying a display area for one screen of a display device in a virtual screen, and operating means for moving the display area in an arbitrary direction on the virtual screen. , When the display area moves downward,
A means for determining whether or not the display area after the movement includes the display information at the bottom edge before the movement, and, when the display information at the bottom edge before the movement is included in the display area after the movement, A means for displaying the position in a specific display form, a means for, when the display area is moved upward, a means for determining whether or not the display information after the movement includes the display information at the top end before the movement, A display device, comprising means for displaying the position of the uppermost end in a specific display form when the display information of the uppermost end before movement is included in the subsequent display area. 7. An operating means for moving a display area in an arbitrary direction on a virtual screen in an apparatus having a screen moving function capable of arbitrarily displaying a display area for one screen of a display device in a virtual screen. , When the above display area moves to the right,
A means for determining whether or not the display area after the movement includes the display information at the right end before the movement, and the position of the right edge is specified when the display information at the right edge before the movement is included in the display area after the movement. Means for displaying in the display form, a means for determining whether or not the display area after the movement includes the display information at the left end before the movement when the display area moves to the left, and a display after the movement. When the area contains the display information of the left edge before moving,
A display device comprising: means for displaying the position of the left end in a specific display form. 8. A device having a screen movement function capable of arbitrarily displaying a display area for one screen of a display device in a virtual screen, and operating means for moving the display area in an arbitrary direction on the virtual screen. When the display area is moved by this operation, means for determining whether or not the display area after the movement includes a part of the display area before the movement, and the display area before the movement in the display area after the movement And a part for displaying the area before the movement included in the display area after the movement in a specific display form when a part of the display area is included. 9. The screen display method according to claim 1, wherein when the display area after the movement includes display information before the movement, a boundary line is displayed at a boundary portion with the display area before the movement for a certain period of time. 10. When the display area after the movement includes display information before the movement, a boundary line is temporarily displayed at a boundary with the display area before the movement until a specific condition is satisfied. Screen display method described. 11. The screen display method according to claim 1, wherein a specific mark is displayed at the boundary portion after waiting for the end of continuous scrolling or skipping operation. 12. The screen display method according to claim 3, wherein a display process in a specific display mode is performed after waiting for the end of continuous scrolling or skipping operation. 13. The screen display method according to claim 4, wherein the area before movement included in the display area after movement is displayed by changing the contrast, the background, or the display color. 14. The display device according to claim 5, 6 or 7, wherein when the display area after the movement includes display information before the movement, a boundary line is displayed at a boundary portion with the display area before the movement for a certain period of time. 15. The display according to claim 5, wherein when the display area after the movement includes display information before the movement, a boundary line is temporarily displayed at a boundary portion with the display area before the movement until a specific condition is satisfied. Or the display device according to 7. 16. The display device according to claim 8, wherein an area before movement included in the display area after movement is displayed by changing the contrast, the background, or the display color. 17. A display device according to claim 5, 6 or 7 or 8, further comprising control means for executing display processing in a specific display mode after waiting for the end of continuous scrolling or skipping operation.