JPS63261418A - Window display control system - Google Patents

Abstract

PURPOSE:To improve a display speed by forming a redisplay table for storing the priority order of windows to be redeveloped and redeveloping only the windows stored in the table to display the developed windows. CONSTITUTION:When an instruction for replacing the order of windows to be displayed is applied to a display control part 3, corresponding orders in the display table for storing the priority order of all the windows are rewritten. The windows and the priority order to be redisplayed in accordance with the rewriting are stored in the redisplay table 2. The windows and the priority order stored in the table 2 are informed to a bitblt circuit 4 and picture data of the corresponding windows are extracted and successively developed in a frame buffer memory 6 so as to be superposed. Thus, only the windows to be redeveloped are developed and a multiwindow can be rapidly displayed.

Description

[Detailed Description of the Invention] [Summary] The present invention provides a window display control method in which a plurality of windows are expanded and displayed on a frame buffer memory in correspondence with priorities. In order to solve the problem that when displaying with the priority order of one of the windows switched, all the data of multiple windows is expanded and displayed sequentially on the frame buffer memory again, which slows down the display speed. By setting up a redisplay table that stores only the priority order of windows that need to be re-expanded, and re-expanding and displaying only the windows stored in this re-display table, the display speed of multi-windows can be improved. That's what I do.

[Industrial application field]

The present invention provides a redisplay table that stores only the priority order of windows that need to be redeployed when displaying a plurality of windows with priorities on the display.
The present invention relates to a window display control system configured to redeploy and display only the windows stored in the window.

[Conventional technology]

Conventionally, when displaying a plurality of images (windows) on a display in order of priority, a configuration as shown in FIG. 3 has been adopted. This will be briefly explained below.

In FIG. 3, bitblt (bit block
The transfer) circuit 24 transfers the images corresponding to the windows c, a, b in descending order of priority among the windows read out from the display table 21 and notified by the display control unit 23 to the illustrated rectangles c, a in the focus map memory 25. , b and are expanded in the frame buffer memory 26 in such a manner that they are sequentially overwritten at positions C1a and b in the figure.

As a result, as shown in the frame panzer memory 26 of FIG. 3, on the display 27, window a is displayed above window C, and window b is displayed above window a.

In this state, if the priorities of window a and window b are swapped and displayed in the order of priorities c, b, and a, the priorities c, b, and a are stored in the display table 21, and the The corresponding window data is read out from the bitmap memory 25 in the order of window C1 window b1 window a, expanded into the frame buffer memory 26, and displayed.

[Problem that the invention seeks to solve]

In this way, in the conventional method, even if the priority order of some windows was changed, all windows were re-expanded and displayed. There is a problem in that the time increases and the multi-window cannot be quickly redisplayed.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a display table l that stores the priority order of windows to be displayed;
A redisplay table 2 stores the priority order of windows to be redisplayed, and a bitbit circuit 4 reads out image data to be displayed from a bitmap memory 5, transfers it to a frame buffer memory 6, and develops it.
All priorities including the window to be redisplayed are stored in display table 1, and this display table 1
After storing only the priorities of windows that must be rewritten and redisplayed according to the priorities stored in the redisplay table 2, the bitbit circuit 4 rewrites only the windows stored in this redisplay table 2. I am trying to expand it and display it.

FIG. 1 shows a basic configuration diagram of the present invention. A display table 1 in the figure stores priority information of windows developed on the frame buffer memory 6 in descending order.

The redisplay table 2 stores priority information of windows to be redisplayed in descending order.

The display control circuit 3 performs various display controls.

The bitblt circuit 4 transfers the image data read from the bitmap memory 5 to the frame buffer memory 6 and develops it.

Bitmap memory 5 stores image data.

The frame buffer memory 6 is for displaying a multi-window on the display 7 by overwriting the image data of the window.

[Effect]

Next, the operation will be explained.

In FIG. 1, when an instruction such as changing the order of windows to be displayed is given to the display control unit 3 from a keyboard (not shown), the corresponding window in the display table 1 storing the priority orders of all windows is given. At the same time, the windows that must be redisplayed by this rewriting and their priorities are stored in the redisplay table 2. Then, the biLblt circuit 4 is notified of the windows and priorities stored in the redisplay table 2, and the image data of the corresponding window is sequentially expanded from the bitmap memory 5 in such a manner that it is overwritten in the frame buffer memory 6. This will redeploy only the windows that need to be redeployed.

As described above, the redisplay table 2 is provided to store windows that need to be re-deployed and their priorities,
By notifying the bHblt circuit 4 of the information stored in this and causing it to redeploy, even if the number of windows increases, multi-windows can be displayed at high speed by expanding only the windows that need to be redeployed. It becomes possible.

〔Example〕

Next, the configuration and operation of one embodiment of the present invention will be explained in detail using FIGS. 1 and 2.

In FIG. 2, ■ indicates a state in which the display table is re-created. This means that the ranks c, a, b (in descending order of priority) originally stored in the display table l in Figure 1 are rewritten as ranks c, b, a as shown using the arrows in the figure. are doing.

■ in the figure shows the state in which the redisplay table 2 is created. This means that the windows that need to be redisplayed and their priority order are shown in the display table 1 rewritten in the figure as shown in Figure 1, for example. This means that it is created as described in redisplay table 2.

In the figure, ■ indicates a state in which a processing request is made to the bitblt circuit 4 based on the display table 1 and the redisplay table 2.

This notifies that the windows to be redisplayed are b and a and their priorities are i and a (lowest to lowest), and reads out the data of these corresponding windows b1a from the bitmap memory 5. This means that a processing request is made to expand into the frame buffer memory 6. At this time, area information (coordinate information) indicating which area in the bitmap memory 5 is to be expanded to which area in the frame buffer memory 6 the image data is stored in is the window name (for example, C, a, b, etc.) with reference to a table not shown.

■ in the figure shows the state in which data is transferred from the bitmap memory 5 to the frame buffer memory 6 and expanded. This means that the corresponding image data is read out from the frame buffer memory 6, transferred to the frame buffer memory 6, and redeployed.

■ in the figure indicates the display state. As a result, the specified window is rewritten, etc., and the display 7
displayed above.

As described above, the windows that need to be redisplayed and their priorities are stored in the redisplay table 2, and this stored information is notified to the bitblt circuit 4 to redeploy only the minimum necessary windows. This allows for high-speed redisplay.

〔Effect of the invention〕

As explained above, according to the present invention, a redisplay table is provided that stores only the priority order of windows that need to be re-expanded, and only the windows stored in this redisplay table are re-expanded and displayed. Because this configuration is adopted, multi-windows can be redisplayed quickly even if the number of windows increases.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating the principle of the present invention, FIG. 2 is an explanatory diagram of the operation of the present invention, and FIG. 3 is a diagram illustrating a conventional system. In the figure, 1 is a display table, 2 is a redisplay table, 3 is a display control unit, 4 is a bitbi circuit, 5 is a bit map memory, 6 is a frame bus memory, and 7 is a display.

Claims (1)

[Claims] In a window display control method in which a plurality of windows are expanded and displayed on a frame buffer memory in association with their priorities, there is provided a display table (1) that stores the priorities of windows to be displayed; A redisplay table (2) that stores the priority order of the window to be redisplayed, and a bitblt circuit that reads the image data to be displayed from the bitmap memory (5), transfers it to the frame buffer memory (6), and develops it. (4), stores all priorities including the window to be redisplayed in the display table (1), and stores this display table (1).
) After storing only the priorities of windows that must be rewritten and redisplayed according to the priorities stored in the redisplay table (2), the bitblt circuit (4) is stored in this redisplay table (2). A window display control method characterized in that the window display control method is configured to re-expand and display only the window that is currently in use.