JPS5991486A - 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 [Technical Field of the Invention] The present invention relates to a display device suitable for document editing processing and the like.

[Technical background of the invention and its problems]

BACKGROUND OF THE INVENTION Recently, Bunya creation devices using computer systems have become widespread, such as Japanese word processors.

When a document is edited or created using this type of device σ, it is generally done by displaying input document information as an image and variably instructing its position on the document. However, as a display device for such document information, a rask scan type display such as a CRT display is often used. In order to provide display image data to such a display in synchronization with the raster scan, it is common practice to provide an image memory corresponding to the display image and to write the display image data into this image memory. Therefore, the position of the displayed image is controlled depending on where on the image memory the image data is written.

However, in conventional display devices in which the display image position is defined in this manner, it is necessary to control the write address in the image memory each time the display image position is changed. For this reason, it has been required to add position information to image data representing a display image and handle the data. Therefore, there are problems in that the data processing speed decreases and the control is complicated.

[Purpose of the invention]

The present invention has been made in consideration of these circumstances, and its purpose is to provide a highly practical display device that can easily and efficiently change the arrangement of images displayed on a Rusk Scan type display. Our goal is to provide the following.

[Summary of the Invention] The present invention divides a storage area of an image memory provided corresponding to a display into sections of a predetermined size, and assigns sectioned image data to each sectioned area. Partition data specifying the partitioned area in accordance with the writing order or reading order of image data is registered in the mapping memory, and access to the image memory is controlled in accordance with the registered partition data.

〔Effect of the invention〕

According to the present invention, the image i on the display screen can be changed by simply changing the section data registered in the mapping memory. ic! The location can be changed easily and efficiently. Moreover, by changing the section data on the mapping memory by easy control of the FR1 without adding position information to the image data, the position can be changed without directly changing the image data. Therefore, it is extremely useful for document editing processing that deals with character pattern images, and has great practical effects.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram of the embodiment device, and 1 in the figure is an image (M memory). This image memory 1 corresponds to the display screen of a display device 2 consisting of a rusk scan type CRT display, etc. The storage area is divided into, for example, the size of one basic character pattern,
It forms multiple divided areas. Sectional image data is written under section control for each of these sectioned areas, and the image data is read out from the image memory 1 to the display device 2 and displayed as an image. Thus, the mapping memory 3 stores partition data specifying partitioned areas on the image memory 1 in correspondence with partitioned image data written to the image memory 1. The writing of this section data is controlled by the mapping memory write control device 4, and in order to follow the input order of the section image data, it is written into the mapping memory 3 in accordance with the relative address information of the section image data. be registered. The image memory write control device 5 provides the input segmented image data to the image memory 1, detects the relative address of the segmented image data, and reads the segmented data from the manipulating memory 3. As a result, the input segmented image data is written into the segmented area on the image memory 1 indicated by the segmented data.

The image data written in the image memory 1 in this way is read out in sequence in synchronization with the rask scan of the display device 2, for example, and is supplied to the display device 2, where the image is displayed.

However, for the purpose of simplifying the explanation, image memory 1 is (8
It is divided into divided areas (
text) shall be displayed.

At this time, for example, as shown in FIG. 2(a), the partitioned areas are sequentially '' in a horizontal layout format on the mapping memory 3, corresponding to the relative addresses of the picture data indicating the character pattern.
The partition data (x, y) as the one that applies f-r'J
By registering the area data (x, y)
The block image data showing the character symbol string according to the
) is stored in the image memory 1. Therefore, the image memory 1 in which image data is written in this way is linked to the rask scan of the display device 2.
If the i-th access is made and the image data is read, an image of the image data array structure written in the image memory 1 will be obtained.

On the other hand, if the structure of the partition data in the mapping memory 3 is determined as shown in FIG. It will be. Then, image display according to the array structure of this image data is performed in the same way.

To summarize the above, it is possible to simply specify the penetrating section position in the image memory 1 of the section image data using the mapping memory 3 without adding information specifying the display image position to each section image data. , it becomes possible to arbitrarily set the image array structure. Furthermore, the image array structure can be changed only by changing the partition data in the mapping memory 3. Therefore, even if the input order Pi of the partition image data is fixed, the arrangement structure can be arbitrarily set by simply controlling the setting of the partition data in the mapping memory 3. Further, there is an advantage that there is no need for complicated control such as changing the input order of the partitioned image data according to the changed arrangement structure as in the conventional method. Therefore, for example, when input text information (character strings) is to be processed in a predetermined manner and assembled into a set of 6'14 images, all that is required is to edit the section data in the mapping memory 3, and the processing and control can be performed easily. It is simple and highly practical. Moreover, since it is only necessary to transfer the image data in a fixed order and write it into the image memory 1, the processing speed can be increased.

FIG. 4 is a schematic diagram showing another embodiment of the invention.

Note that the same parts as those in the apparatus shown in FIG. 1 are designated by the same reference numerals.

This device is provided with a first mapping memory 6 that controls the assignment of partitioned image data to the image memory 1, and a second mapping memory 7 that controls the reading of image data from the image memory 1. It is something. These first and second mapping memories 6.7 are basically the same (although they exhibit shallow capabilities, the first mapping memory 6 is similar to the mapping memory 3 in the previous embodiment). , the partition data is determined according to the input order of the partition image data, whereas the second mapping memory 7 determines the partition data according to the rask scan of the display device 2.

As described above, according to the present apparatus including the first mapping memory 6 for image data write control and the second mapping memory 7 for read control, the first mapping memory 6 is used. This brings about the effect that the same processing as in the previous embodiment can be performed. Furthermore, since the reading order of the sectioned image data from the image memory 1 can be changed using the second mapping memory 7, the image memory 1
It becomes possible to change the image arrangement on the display image without replacing the image data stored in the . Therefore, 1
Even for an image given as a single image, the image arrangement structure can be easily changed.

For example, when inputting a single image as shown in FIG. 5 into the image memory 1 and displaying it as an image,
When image data is written in advance in a desired section on the image memory 1, for example as shown with diagonal lines in FIG. 6, the first and second mapping memories 6.7
The partition data can be registered as shown in FIG.

In this way, the first mapping memory 6 is used to divide and write the input image data into a spare area of the image memory 1, and the second mapping memory 7 is used to write the input image data as desired. It becomes possible to reconstruct and read out the image at the desired image position. Therefore, for example, although conventionally it was not possible to display other images in that position due to the data in the shaded area shown in Figure 6, according to the book spine, the desired image as shown in Figure 8 is displayed. It becomes possible to obtain a display image with an image arrangement that is as follows.

As described above, the apparatus of the present invention controls the writing of image data into the image memory 1 or the reading of image data based on the section data registered in the mapping memory, so the image arrangement can be changed without directly changing the image data itself. f
It becomes possible to easily change the il tNJ structure. Therefore, it is possible to create and edit sentences, and to combine figures/tables with text information.
Li collection processing etc. can be performed easily and effectively,
It has great practical effects and has great practical advantages.

Note that the present invention is not limited to the above embodiments. For example, the size and number of divided areas set in the image memory 1 may be determined depending on the image to be processed. Of course, it is also possible to change the image arrangement configuration using only the second mapping memory 7. Further, the number of mapping memories may be arbitrarily determined. In short, the present invention can be implemented with various modifications without departing from the gist thereof.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention, and FIG. 2 (
, ) (b) and FIGS. 3(a) and 3(b) are diagrams showing the data structure in the mapping memory and the data structure in the image memory for realizing the function of the embodiment device, and FIG. FIGS. 5 to 8 are schematic diagrams showing another embodiment of the device, and FIGS. 5 to 8 show its operation. FIG. 5 is a diagram showing an example of an input image, and FIG. 6 is a diagram showing an example of the data structure of the image memory. FIG. 7 is a diagram showing an example of the data structure of the first and second mating razors, and FIG. 8 is a diagram showing an example of a display image. 1... Image memory, 2... Display device (rusk scan type display), 3... Mapping memory, 4...
. . . Mapping memory write control device, 5 . . Image memory IJ writing control device, 6 . . . First mapping memory, 7◆ . . . Second mapping memo 1. Figure 1 ('a) Figure 2 (b) Figure 4 Figure 5

Claims (2)

[Claims] (1) An image memory that divides the storage area into predetermined sizes and stores the divided image data of the image to be displayed on the rusk scan type display for each divided area, and writes the divided image data to this image memory. a mapping memory storing partition data indicating a storage partition area in the image memory of each partition image data corresponding to the order or the reading order of the partition image data from the partition image memory; A display device comprising: means for controlling writing or reading of image data into or from the image memory according to the section data stored in the mapping memory. (2) Access control of the partition area of the image memory using the partition data stored in the mapping memory is performed according to the relative partition address of the partition image data written to the image memory or the image display rask position information on the display. A display device according to claim 1.