JPS62124592A - Display unit - 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 [Field of Industrial Application] The present invention relates to a display device, and more particularly to a computer-9 display device having a plurality of image storage means.

(Prior Art) Conventionally, when displaying a different image on a display device, a method has been adopted in which the contents of an image storage means (image memory) are changed and then the different image is displayed.

[Problems that the invention attempts to solve]

This method has the disadvantage that it takes a long time to display one image because the contents of the image storage means must be refreshed each time a different image is to be displayed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a display device that stores different image data in a plurality of image storage means and reduces the time required to display the different image data using a switching means.

[Means for solving problems]

A display device according to the present invention includes a plurality of storage means for storing image data, a switching means for selecting one storage means from the plurality of storage means, and image data stored in the storage means selected by the switching means. and an image display means for displaying different image data, by selecting an image storage means for storing different image data and displaying
The time required to display different image data can be reduced.

〔Example〕

The present invention will be described below with reference to embodiments and drawings.

The first section is a diagram schematically showing an embodiment according to the present invention. The first image storage means 1 always stores the entire image data T to be displayed on the display frame 6 (FIG. 2) of the image display means 4, for example. The second image storage means 2 stores each image data of a designated display area under the entire image data, that is, windows W1 to W4, from the first image storage means in accordance with a command from the control means 5. Read and store.

The switching means 3 switches the image display means 41F! according to a command from the control means 5! : the first image storage means] or the second image storage means 2.

Note that the image display means 4 inputs image data and displays the display frame 6.
, and the control means 5 controls the first and second image storage means 1, 2 . Switching means 3. and image display means 4
control each of the

Next, the operation shown in FIG. 1 will be explained using a specific example.

In this specific example, the first image storage means 1 always stores the image data of the entire area, and the image storage means 2 of the cake 2 stores the image take of the designated windows W1 to W4 every time it is designated. FIG. 2 is a diagram displaying completely destroyed image data T stored in the first image storage means 1, and FIGS. 3 and 4 are windows W1 to W4 that are replaced and stored in the second image storage means 2. For example, FIG. 3 shows the image data of the window W1, and FIG. 4 shows the image data of the window W4.

First, in response to a command from the control means 5, the window W1 in FIG. 2, for example, is specified in the image storage means 1.

The second image storage means 2 stores the image data of the designated window W1. Note that the first image storage means 1 continues to store the image data of the entire area.

In this case, when the image data of the second image storage means 2 is transferred to the image display means 4 via the switching means 3, the image display means 4 transfers the image data of the second image storage means 2 to the screen 3. The display is displayed as shown in the figure, and the first
When the image data of the first image storage means] is transferred to the image display means 4, the image display means 4 displays the nine image data of the first image storage means 1 as shown in FIG.

Next, in response to a command from the control means 5, the window W4 in FIG. 2 is specified in the second image storage means 2. The second image storage means 2 stores the image data of the designated window W4.

In this case, if the image data of the second image storage means 2 is transferred to the image display means 4 via the switching means 3,
The image display means 4 displays the image data of the second image storage means 2 as shown in FIG. Once transferred, the image display means 4 displays the bottom of the image data in the first image storage means 1 as shown in FIG.

As a result of the above, the time for displaying the image data of the display windows W1 to W4 of the completely destroyed image take T and redisplaying the image data of the entire area is shortened.

Embodiment C has a first image storage means for displaying a complete destruction and a second image storage means for displaying a portion thereof! ! Although an example is shown in which a plurality of image storage means are provided, C can take many forms without changing the gist of the present invention.

〔Effect of the invention〕

As explained above, the present invention has nine effects in which different image data can be stored in a plurality of image storage means and the time for displaying the different image data can be shortened using the switching means.

[Brief explanation of drawings]

FIG. 1 is a diagram showing one embodiment of the present invention, and FIG.
FIGS. 4 to 4 are explanatory diagrams showing display examples of image data, respectively. 1...First image storage means. 2...Second image storage means. 3...Switching means. 4... Image display means. 5... Control means. Applicant: NEC Corporation Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Scope of Claims] A plurality of storage means for storing image data; a switching means for selecting one storage means from the plurality of storage means; and a plurality of storage means for storing image data in the storage means selected by the switching means. A display device comprising: an image display means for displaying an image;