JPH0793574A - Data processor and display controlling method - Google Patents

Abstract

PURPOSE:To enable the magnified display of only the necessary part while grasping the whole, in a data processor provided with a display device. CONSTITUTION:When a magnified location is designated on the displayed picture of a display part 16 by a cursor, a CPU 11 sets the magnification range corresponding to the location, extracts data existing within the magnification range, and performs the magnified display of the data. Thus, only the surroundings of the designated location can be partially magnified and displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing device such as a word processor or a personal computer having a display device, and more particularly to a data processing device having a magnifying display function and a display control method.

[0002]

2. Description of the Related Art Conventionally, some data processing devices such as word processors and personal computers have an enlarged display function for enlarging and displaying display data.
However, this is a function of enlarging and displaying the display data of the entire screen by mode switching. Therefore, in the case where the screen is small, the display data that has been enlarged and displayed may not be fully filled, and in such a case, an operation of scrolling the screen to view is necessary.

[0003]

As described above, the conventional enlarged display function is intended for the entire screen, and all the display data in the enlarged display is displayed.
For this reason, the display data after enlargement may not all fit in the screen, making it difficult to grasp the whole image, and there are problems such as repeated scrolling operations to display the necessary parts. It was

The present invention has been made in view of the above points, and an object thereof is to provide a data processing apparatus and a display control method capable of enlarging and displaying only a necessary portion while grasping the whole.

[0005]

According to the present invention, in a data processing device equipped with a display device, a position designating device for designating a magnified position on a display screen of the display device, and a magnifying device designated by the position designating device. It is provided with a range setting means for setting an enlarged range corresponding to a position, and a display control means for extracting and enlarging and displaying data existing in the enlarged range set by the range setting means.

[0006]

According to the above construction, by designating the enlargement position on the display screen, the enlargement range corresponding to the position is set, and the data existing in the enlargement range is extracted and enlarged and displayed. As a result, only the periphery of the specified position can be partially enlarged and displayed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a main part of a data processing device including a display device. In FIG. 1, the CPU
Reference numeral 11 is for controlling the entire apparatus.
By accessing the M12 and the RAM 13 and starting the program according to the input instruction, the display control process and the like as shown in FIG. 2 are executed.

The ROM 12 has a program area 12a for storing a program necessary for starting the CPU 11.
Also, a font area 12b for storing font data used for display is provided.

The RAM 13 stores various kinds of information necessary for controlling the CPU 11, and here is provided with a document buffer 13a for storing the document data to be displayed.

The input unit 14 is composed of, for example, a keyboard and is used to input information such as character codes and commands. The input control unit 15 controls the input of the information input by the input unit 14. The display unit 16 includes, for example, a liquid crystal display (LCD), and displays document data and the like. The display control unit 17 includes a VRAM (video RAM) 18
Is used to control the display of the display unit 16. VRAM
Display data to be displayed on the display unit 16 is stored in 18.

A floppy disk device (hereinafter referred to as FDD) 19 is used as an external storage device and is used for storing document data and the like. The floppy disk controller (hereinafter referred to as FDC) 20 is the FDD 19
Control.

Next, the operation of the embodiment will be described. Here, a case will be described in which a data processing device including a display device performs partial enlarged display instead of the entire screen.

As shown in the flowchart of FIG. 2, first, the enlargement position is designated on the display screen of the display unit 16 (step S1). This designation is performed by moving the cursor 31 displayed on the display screen to a desired position as shown in FIG. When the enlargement position is specified, the CPU
11 indicates an enlarged range 32 corresponding to the designated position.
The setting is made as shown in (b) (step S3). It should be noted that the size of the expanded range 32 is predetermined.

Next, the CPU 11 takes in the display data within the enlarged range 32 (step S3) and enlarges the taken-in display data (step S4). Specifically, when the display data is character data, the font data that has been multiplied by a predetermined amount is RO separately from the standard font data in advance.
This is performed by preparing in the font area 12b of M12 and reading the corresponding font data of a predetermined size from there.

Further, since the data arbitrarily drawn by the user on the screen, such as the graphic data, cannot be prepared in advance like the character data, the display data is newly created by multiplying the display data by the predetermined size. It will be fixed.

When the display data is enlarged in this way, the CPU 11 VR-displays the enlarged display data.
Transfer to the AM 18 (step S5). The display unit 16 is
Display is performed based on the display data stored in the VRAM 18 (step S6). As a result, the periphery of the position designated by the cursor 31 is partially enlarged and displayed as shown in FIG.

In this case, if the cursor 31 is moved, the enlargement position can be changed along with the movement by repeating the same processing as above. That is, it is possible to continuously view the display data while enlarging the display data while moving the cursor 31, as if the screen is being viewed with a magnifying glass. In addition, within the expansion range 32, data editing, composition,
Work such as modification can also be performed.

In the above embodiment, the document buffer 31
Although the case of magnifying and displaying the document data in the inside has been described, in the case of a device that simultaneously displays an operation unit such as a software keyboard or a scroll bar, the same enlarged display including the operation unit is performed. Assumed to be performed.

That is, for example, when a software keyboard is displayed on the screen as shown in FIG. 4A and a certain key on the keyboard is designated by the cursor 31, as shown in FIG. 4B. Then, the enlargement range 32 in which the position of the cursor 31 is set to the enlargement position is set and only that portion is enlarged and displayed. This makes the designation operation much easier.

[0020]

As described above, according to the present invention, the enlargement position is designated on the display screen, the enlargement range corresponding to the designated enlargement position is set, and the enlargement range exists within the set enlargement range. Since I extracted the data and expanded it,
Only the area around the specified position can be enlarged. Therefore, it is difficult to grasp the whole like the conventional enlarged display, or to display the necessary part,
It is possible to solve the problem that scroll operation is required many times.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a data processing device according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the embodiment.

FIG. 3 is a diagram showing a display screen of the embodiment.

FIG. 4 is a diagram showing an enlarged display of an operation unit according to another embodiment of the present invention.

[Explanation of symbols]

11 ... CPU, 12 ... ROM, 12b ... Font area,
13 ... RAM, 13a ... Document buffer, 14 ... Input section,
15 ... Input control unit, 16 ... Display unit, 17 ... Display control unit,
18 ... VRAM, 31 ... Cursor, 32 ... Enlarged range.

Claims (2)

[Claims] 1. A data processing device including a display device, wherein a position designating means for designating a magnifying position on a display screen of the display device and a magnifying range corresponding to the magnifying position designated by the position designating device are set. A data processing apparatus, comprising: a range setting means for performing a display and a display control means for extracting and enlarging and displaying data existing in the enlargement range set by the range setting means. 2. A display control method for a data processing device having a display device, wherein an enlargement position is designated on a display screen of the display device, and an enlargement range corresponding to the designated enlargement position is set. The display control method is characterized in that data existing within the enlarged range is extracted and enlarged and displayed.