JPS63177195A - Scroll controlling system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] The present invention solves the problem that vertical or horizontal scrolling of an image displayed in a window covered by another window is slow in multi-window display. Therefore, an X-axis direction partitioning table and an By providing a split table in the Y-axis direction and scrolling by referring to one of the above tables corresponding to the scroll direction, it is possible to reduce the undisplayed portion of the window that newly appears when scrolling and scroll at high speed. This is what I did.

[Industrial application field]

The present invention provides a scroll system configured to quickly scroll an image displayed in a window that is covered by another window. There are display devices that can display images by allowing them to overlap with each other.

There is a method shown in FIG. 5 as a method for scrolling an image displayed in a window covered by another window on the display screen of this display device.

In FIG. 5(a), a window ill and a window (2) are provided on the screen. Since this window (11) has a lower display priority than window (2), it must not be displayed in the area covered by window (2). Therefore, the image displayed in this window (11) For example, in order to scroll quickly in the Y-axis direction, points P1 and P in the visible area of window +11
It is divided into a rectangular area defined by t and a rectangular area defined by points Q1 and Q2, and each of these areas is scrolled in the Y-axis direction.

[Problem that the invention seeks to solve]

However, if the visible area is divided to scroll quickly in the Y-axis direction, scrolling in the X direction perpendicular to this will be indicated using diagonal lines in Figure 5 (B). As shown in the figure, many undisplayed parts appear overlappingly as a result of scrolling, and it is necessary to read the corresponding image from the window buffer and display it in this undisplayed part, so scrolling takes a lot of time. , there was a problem that it was not possible to scroll at high speed.

Further, even if the direction in which the visible region is divided is changed from the Y-axis direction to the X-axis direction, there is a similar problem that scrolling cannot be performed at high speed compared to scrolling in a direction perpendicular to this direction.

Means for Solving Problem c] In order to solve the above-mentioned problem, the present invention makes it possible to change the visible area of a window covered by another window to another window covering the window in the X-axis direction. X that stores area division information divided by the starting and ending Y coordinates of
Axial direction partition table 1-2 and the possible m sl area of a window covered by another window are divided into the starting and ending points X of other windows covering the window in the Y-axis direction.
A Y-axis direction division table 1-3 that stores area division information divided by coordinates, and either the above-mentioned X-axis direction division table 1-2 or Y-axis direction division table 1-3 corresponding to the designated scroll direction. A rectangular area transfer unit 2 that references and scrolls the image displayed in the window, and a corresponding image from the window buffer for the undisplayed part of the window that is scrolled by this rectangular area transfer unit 2 and newly appears. A rectangular area display section 3 for reading out and displaying the image is provided, and the image scrolled by the rectangular area transfer section 2 and the rectangular area display section 3 is displayed in a window.

FIG. 1 shows the principle configuration diagram of the present invention. In FIG.
X-axis direction partition table 1-2, Y of window (1)
An axial division table 1-3, a buffer l-4 for window (1), etc. are provided.

The table 1-1 of Into+1) stores coordinates that define the area of the window+1).

The X-axis direction division table 1-2 for window +11 stores coordinates that define the area of the visible area of the window (11) that is not covered by other windows in the X-axis direction.

Similarly, the Y-axis direction division table 1-3 of window +11 stores information related to the Y-axis direction.

Buffer l-4 of window (1) is buffer l-4 of window (1).
Image information to be displayed in 1 is stored.

The rectangular area transfer unit 2 scrolls an image displayed in a window in a designated direction.

The rectangular area display unit 3 displays a corresponding image in the undisplayed portion of the window scrolled and appeared by the rectangular area transfer unit 2, for example, in a window (Banff 11-4 of 11).
The data is read from the frame memory 4, written into the frame memory 4, and displayed.

The frame memory 4 stores images to be displayed on the display 5.

[Effect]

Next, the operation will be explained.

In FIG. 1, for example, when a scroll instruction is input to the rectangular area transfer unit 2 for window (1), the X-axis direction division table 1-2 or One of the Y-axis direction partition tables 1-3 is selected, and by referring to this table, the images displayed in the window (11) in the frame memory 4 are scrolled. For the undisplayed part, the rectangular area display section 3 opens a window (11 buffers 1-
Read the corresponding image information from frame memory 4 and store it in frame memory 4.
Write inside and display.

As described above, the X-axis direction divided table l-2 or the Y-axis direction divided table l-3 is optimal for the scrolling direction.
By selecting one of these and scrolling while referring to the selected one, it is possible to minimize the undisplayed portion in the newly appearing window and scroll at high speed.

〔Example〕

Next, the configuration and operation of one embodiment of the present invention will be explained in detail using FIGS. 2 to 4.

In FIG. 2, the display processor 6 includes a divided rectangular table creation section 6-1, a rectangular area transfer section 2, and a rectangular area display section 3.
, and an input control section 6-2.

The divided rectangle table creation unit 6-1 generates area division information of an uncovered area and a covered area in the X-axis direction with respect to the visible area of a window (for example, window 11) that is covered by another window. This is stored in the X-axis direction division table 1-2 of the window 111. Similarly, area division information regarding the Y-axis direction is also stored in the Y-axis direction division table 1-3.

As described above, the rectangular area transfer unit 2 is for scrolling, for example, the image in window +11, in a designated direction.

As described above, the rectangular area display unit 3 reads out the image corresponding to the undisplayed part in the window that newly appears due to scrolling from the buffer 1-4 of window (1), stores it in the frame memory 4, and stores it in the frame memory 4. It is to be displayed.

The input control unit 6-2 detects scroll instructions and the like from the human-powered device 5-1.

Next, using FIG. 3, the divided rectangular table creation unit 6-1
is in the X-axis direction (Y-axis direction) with respect to the visible area of window +11 that is covered by another window (2).
A procedure for storing area division information of an area not covered by the area in the X-axis direction division table 1-2 (Y-axis direction division table 1-3) of window +11 in the memory 1 will be explained.

In Figure 3 (A), for the visible area of window 11) covered by window (2), as shown in Figure 3 (B), the area that is not covered in the X-axis direction is Region division information expressed using the coordinates of point C and coordinates of point e at the lower right, and region division information expressed using the coordinates of point a at the upper left and coordinates of the lower right point are created. The created area division information regarding the X-axis direction is stored in the X-axis direction division table 1-2 of window (1). By referring to this X-axis direction division table l-2,
It becomes possible to scroll at high speed in the axial direction.

The shaded area in the figure is an undisplayed area that newly appears in the window due to scrolling, and is read out from the buffer of window +11 by the rectangular area display section 3 and displayed.

Similarly, in the Y-axis direction, as shown in Figure 3 (c), the area that is not covered in the Y-axis direction is expressed using the coordinates of the upper left point a and the lower right point d. Region division information,
Region division information expressed using the coordinates of the upper left point and the coordinates of the lower right point e is created. This created wI area division information regarding the Y-axis direction is stored in the Y-axis direction division table-1-3 of window (11). By referring to this Y-axis direction division table 1-3, it is possible to The shaded area in the figure is an undisplayed area that newly appears in the window as a result of scrolling. Is displayed.

Next, the operation of the configuration shown in FIG. 2 will be explained in detail using FIG.

In Fig. 4, ■ in the figure indicates a state in which a rectangular partition table is created.As explained using Fig. 3, this means that the X-axis Create area division information regarding areas covered in the direction (Y-axis direction) and areas not covered, respectively, and create, for example, the X-axis direction division table 1-2 for window +11.
This means that it is stored in advance in the (Y-axis direction division table 1-3).

■ in the figure indicates a state in which it is determined which direction is the scrolling direction (X-axis direction or Y-axis direction). If it is the X-axis direction, ■ to ■ in the figure are executed. If it is in the Y-axis direction, execute steps ■ to [phase] in the figure.

In the figure, ■ indicates a state in which the X-axis direction division table is referred to. This means, for example, that the X-axis direction division table 1-2 of the window +11 in FIG. 2 is referred to.

In the figure, ■ indicates a state in which a rectangular area is transferred.

This is the table referenced in the figure, for example the window (
This means reading area information from the X-axis direction division table 1-2 of No. 11 and scrolling the image displayed in this area in the X-axis direction.

Corresponding to this scrolling, an undisplayed portion appears in the opposite direction to the scrolling direction.

■ in the figure indicates a state in which a newly appearing undisplayed part is displayed. +11 buffer 1-4
This means that the data is read from the frame memory 4, stored in the frame memory 4, and displayed.

In the figure, ■ indicates a state in which it is determined whether or not all divided rectangles have been completed. If YES, the process ends. N
In the case of O, the steps from ■ to ■ in the figure are repeatedly executed.

By the above procedure, it becomes possible to scroll at high speed by referring to the X-axis direction division table prepared for the designated X-axis direction.

Similarly, in the Y-axis direction, it is possible to perform high-speed scrolling by referring to the Y-axis direction division table prepared for the designated Y-axis direction by following the steps ◯ to 0 in the figure.

〔Effect of the invention〕

As explained above, according to the present invention, with respect to the visible region not covered by other windows, the region covered by the other window and the region not covered by the other window in the X-axis direction and the Y-axis direction An X-axis direction division table and a Y-axis direction division table are provided to store area division information divided into two areas, respectively, and scrolling is performed by referring to either of the above tables corresponding to the scrolling direction. This allows for faster scrolling by reducing the undisplayed portion of the newly appearing window.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle configuration of the present invention, FIG. 2 is a diagram showing the configuration of one embodiment of the present invention, FIG. 3 is a diagram explaining the operation of the present invention, FIG. 4 is a flowchart explaining the operation of the present invention, and FIG. An explanatory diagram of the operation of the conventional method is shown. In the figure, l is memory, 1-1 is window (11 table, l-2 is window + 11 X-axis partition table, 1-3 is window + 11 Y-axis partition table,
1-4 represents a buffer for window+11, 2 represents a rectangular area transfer unit, 3 represents a rectangular area display unit, 4 represents a frame memory, and 5 represents a display.

Claims (1)

[Claims] In a scroll control method for scrolling an image displayed in a window provided on a display screen, the visible area of a window covered by another window is covered by the window in the X-axis direction. The X-axis direction partition table (1-2) stores the area division information divided by the starting and ending Y coordinates of the window, and the visible area of the window covered by other windows is stored in the Y-axis direction. A Y-axis direction division table (1-3) that stores area division information divided by the start and end X coordinates of other windows that are in the window, and the above-mentioned X-axis direction division table (1-2) corresponding to the designated scroll direction. Alternatively, the Y-axis direction partition table (1
A rectangular area transfer unit (2) that scrolls the image displayed in the window by referring to either of -3), and an undisplayed image in the window that is scrolled by this rectangular area transfer unit (2) and newly appears. A rectangular area display unit (3) reads out and displays a corresponding image from a window buffer for each part, and the rectangular area transfer unit (2)
) and a rectangular area display section (3) to display an image scrolled within a window.