JPH0277834A - Multiwindow display device - Google Patents

Abstract

PURPOSE:To shorten the time required for screen display operation by redisplaying only a necessary window when the display area of the window is varied. CONSTITUTION:An image data storage means 1 is stored with image data that respective software programs have. A display indication receiving means 3 receives a data area to be displayed on the screen and the display start position on the screen from outside. A display area comparing means 2 finds variables of enlargement, reduction, and movement by making the data area indicated to be displayed and its display start position correspond to a current display picture. Then a redisplay window judging means 4 judges a window required to be displayed from the variables and sends corresponding image data to an image display means 5. The image display means 5 displays the received image data on the screen. Consequently, the time required for the screen display can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a multi-window display device, and more particularly to a multi-window display device that reduces the time required to re-display a screen when the display area of a window is changed.

[Prior Art] Conventionally, this type of multi-window display device has a method of re-displaying all the windows when the display area of one of the plurality of windows being displayed is changed. I was taking it.

[Problem to be solved by the invention]

In the conventional multi-window display device described above, it is necessary to redisplay all the windows in order to change the display area of one window, so the more windows there are, the longer it takes to display the screen. There are drawbacks.

[Means to solve the problem]

A multi-window display device of the present invention is a multi-window display device in which a plurality of software programs are running at the same time, and includes an image data storage means for storing image data of each of the software programs, and receiving designation for displaying the image data. The receiving means and the data area and display start position that received the display instruction are enlarged and displayed in correspondence with the current display screen.
A display area comparing means for determining a reduction/movement variable, a redisplay window determining means for determining image data to be redisplayed based on the variables, and an image displaying means for displaying the image data to be redisplayed on the screen. It consists of

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. As shown in FIG. 1, this embodiment includes an image data storage means 1, a display area comparison means 2, a display instruction receiving means 3,
It is composed of a redisplay window determining means 4 and an image displaying means 5.

The image data storage means 1 is constituted by a file such as a semiconductor memory element or a magnetic disk, and the image data of each software is fully stored in this image data storage means 1. The display instruction receiving means 3 receives from the outside the data area to be displayed on the screen and the display start position on the screen. The display area comparing means 2 associates the data area and the display start position for which the display instruction has been received with the current display screen, and calculates enlargement, reduction, and movement variables.

The redisplay window determining means 4 determines the window that needs to be redisplayed from the previous variables and sends the corresponding image data to the image display means 5. The image display means 5 displays the received image data on a screen using a CRT display or a liquid crystal display.

FIGS. 2(a) and 2(b) are examples of the use of the multi-window display device of the present invention.

For example, when enlarging as shown in FIG. 2(a), only the changed window a is redisplayed without redisplaying windows b and C. When reducing the size as shown in Figure 2(b), window d is not redisplayed and window c
- Re-display in the order of b-a.

〔Effect of the invention〕

As described above, the present invention has the effect of reducing the time spent on screen display by redisplaying only the windows that need to be redisplayed when the display area of the window is changed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is an example of a screen display of the embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Image data storage means, 2... Display area comparison means, 3... Display instruction receiving means, 4... Redisplay window determination means, 5... Image display means.

Claims (1)

[Claims] In a multi-window display device in which a plurality of software programs are running simultaneously, an image data storage means for storing image data of each of the software programs, a receiving means for receiving display instructions for the image data, and a receiving means for receiving the display instructions. display area comparison means for determining enlargement/reduction/movement variables by associating the data area and display start position with the current display screen; redisplay window determination means for determining image data to be redisplayed from the variables; 1. A multi-window display device comprising: image display means for displaying image data to be redisplayed on a screen.