JPH1063257A - Picture enlarging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enlarge and to display an arbitrary picture with an arbitrary enlarging rate. SOLUTION: In the picture enlarging device, an enlarging information setting means 1 sets enlarging rate, enlarging region and reference point as enlarging information. The information, which is set, is held in an enlarged information holding means 2. If an enlarging of a picture is to be conducted, a picture data acquisition means 4 obtains the display screen data held in a frame memory 3 and the picture data, which are to be enlarged, are segmented based on the reference point and the enlarging region. The segmented picture data are enlarged by a picture enlarging means 5 based on the enlarging rate and enlarging data are generated. A picture synthesizing means 6 superimposes the enlarged data on the display screen data to generate a synthesized picture and a displaying means 7 displays the generated synthesized picture.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image enlarging apparatus, and more particularly to an image enlarging apparatus for enlarging an image on a display screen.

[0002]

2. Description of the Related Art In recent years, the amount of information displayed on one screen of a display device connected to these information processing apparatuses has tended to increase due to multifunctional processing of personal computers, workstations, and the like. Since the resolution and stability of the display device itself have been improved, a large amount of information is displayed on the screen.

[0003]

However, as a result of displaying a large amount of information on a display screen having a limited size, each displayed character or image becomes small and difficult to read. I have. Because of this, especially if you ’re unfamiliar with the controls or the surroundings are n’t bright enough,
When the visual acuity is weak, the display cannot be determined, and the operation may be erroneously performed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an image enlarging apparatus which can enlarge and display a display image of an arbitrary portion by a simple operation.

[0005]

According to the present invention, in order to solve the above-mentioned problems, in an image enlarging apparatus for enlarging an image on a display screen, an enlarging ratio, an enlarging range, and a reference point are set as enlarging information. Information setting means, enlargement information holding means for holding the enlargement information, a frame memory holding display screen data, and acquiring the display screen data,
An image data acquisition unit that cuts out image data to be enlarged based on the reference point and the enlargement range; an image enlargement unit that enlarges the image data at the enlargement ratio to generate enlarged data; and the display screen An image enlarging apparatus is provided, comprising: an image synthesizing unit that superimposes the enlarged data on data to generate a synthesized screen; and a display unit that displays the synthesized screen.

In this image enlargement device, the enlargement ratio, enlargement range, and reference point can be set as enlargement information by the enlargement information setting means. The set enlargement information is held in the enlargement information holding means. When the image is enlarged, the image data acquiring means acquires the display screen data stored in the frame memory, and cuts out the image data to be enlarged based on the reference point and the enlargement range. An image enlargement unit enlarges the cut-out image data based on an enlargement ratio, and generates enlarged data. The image combining means generates a combined screen by superimposing the enlarged data on the display screen data, and the display means displays the generated combined screen.

Since the display image data is enlarged by setting the enlargement information in this manner, an arbitrary image can be enlarged at an arbitrary enlargement ratio, and an image which is difficult to see at a corner of the screen can be easily enlarged as necessary. it can.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing the principle configuration of the image enlargement device of the present invention.

An image enlargement device according to the present invention includes an enlargement information setting unit 1 for setting enlargement information necessary for enlarging an image, an enlargement information holding unit 2 for holding the set enlargement information, and sequentially displaying display screen data. An image data acquisition unit 4 that acquires the held frame memory 3, display screen data, and cuts out image data to be enlarged based on the enlargement information, and enlarges the extracted image data based on the enlargement information and enlarges the image data. Image enlarging means 5 for generating data, image synthesizing means 6 for generating a synthetic screen by superimposing enlarged data on display screen data, and display means 7 for displaying a synthetic screen
And is composed of

Here, the enlargement information means an enlargement ratio, an enlargement range, and a reference point. Therefore, the enlargement information setting means 1
Includes an enlargement ratio setting unit 1a, an enlargement range setting unit 1b, and a reference point setting unit 1c. In the enlargement ratio setting section 1a,
A plurality of enlargement ratio candidates are set in advance, and one of them can be selected to set the enlargement ratio. Also, a plurality of expansion range candidates are set in advance in the expansion range setting unit 1b, and one of them can be selected to set the expansion range. Similarly, a plurality of reference point candidates are set in advance in the reference point setting unit 1c, and one of them can be selected to set the reference point.

The image enlarging apparatus according to the present embodiment operates on an arbitrary OS (Operating System) operating by opening a window on a computer.
ating System). FIG. 2 is a diagram showing an example of a state in which application software is started on an OS in which the image enlargement device is installed.

The window 10 has a title bar 11, which indicates that this window 10 is application software named "document creation software A". Also, this software includes a menu bar 12 and a toolbar 13
And a message box 14 are set to assist the input operation on the input screen 15. Further, by operating on an OS incorporating the image enlargement device of the present embodiment, a start button 16
Is added.

FIG. 3 is a view showing a state in which the start button 16 of the image enlarging apparatus shown in FIG. 2 is selected with a pointing device such as a mouse and a pull-down menu 20 is opened. A pull-down menu 20 includes an option 21 for opening an enlargement ratio setting screen, an option 22 for opening an enlargement range setting screen,
And an option 23 for opening a reference point setting screen.

FIG. 4A is a view showing an example of a magnification setting screen. This screen is opened by selecting the option 21 in FIG. 3 with a pointing device such as a mouse, and three types of enlargement ratios of 100%, 150%, and 200% are set in advance. Can be set. Also, an option for inputting an enlargement ratio is prepared, and an arbitrary enlargement ratio can be input.

FIG. 4B is a diagram showing an example of an enlarged range setting screen. This screen is opened by selecting the option 22 in FIG. 3 with a pointing device such as a mouse, and three types of expansion ranges of “large”, “medium” and “small” are set in advance. You can set how large it is.

FIG. 4C shows an example of a reference point setting screen. This screen is opened by selecting the option 23 in FIG. 3 with a pointing device such as a mouse, and has two types of reference points “cursor” and “pointer” set in advance. Can be set.

When the enlargement information is set in this way, the enlargement ratio, enlargement range, and reference point settings are held in the enlargement information holding means 2 shown in FIG. In the present embodiment, the ON / OFF of the image enlargement device can be switched by selecting the start button 16 with a pointing device such as a mouse. In the ON state, the start button 16 is displayed in black and white inverted.

As described above, the image enlargement apparatus of the present invention is incorporated in the OS and operates, so that it can be used irrespective of the object. In other words, no matter how detailed the application software is running, it is possible to enlarge the display so that the user can easily see the desired part.

Here, a procedure for enlarging an image by the image enlarging apparatus of the present embodiment will be described. FIG. 5 is a flowchart showing a procedure for enlarging an image. Hereinafter, description will be given along the steps in the figure. [S1] It is determined whether the start button has been selected. If the start button is selected, the process proceeds to step S2, and if not, the process of this flowchart does not start. In addition,
Here, the start button is the start button 16 shown in FIG. [S2] It is determined whether the enlargement information has been set. If the setting has been completed, the process proceeds to step S4, and if not, the process proceeds to step S3. [S3] Enlargement information is set. That is, the enlargement ratio setting screen, enlargement range setting screen, and reference point setting screen shown in FIG. 4 are opened from the pull-down menu shown in FIG. 3, and the respective settings are made. [S4] The image data acquisition means 4 reads the display image data from the frame memory 3. [S5] The image data acquiring unit 4 cuts out image data to be enlarged from the display image data based on the reference point and the enlargement range set in step S3. The image data cut out here is sent to the image enlarging means 5. The display image data itself is sent to the image synthesizing means 6. [S6] The image enlargement unit 5 enlarges the image data based on the enlargement ratio set in step S3, and generates enlarged data. The generated enlarged data is sent to the image synthesizing unit 6. [S7] The image synthesizing unit 6 generates a synthesized image by superimposing the enlarged data sent from the image enlarging unit 5 on the display image data sent from the image data acquiring unit 4. The generated composite image is sent to the display means 7 and displayed. [S8] It is determined whether the reference point on the display screen has moved. If there is a movement, the process proceeds to step S4 again. If there is no movement, the process proceeds to step S9. [S9] It is determined whether the start button 16 has been selected.
If the start button is selected again during the start, the flowchart ends, and the image enlarging apparatus stops. If the start button has not been selected, the process proceeds to step S8 again, and the processing of this flowchart is repeated.

In the above description, the enlargement information is set every time the image enlargement apparatus is started. However, specific enlargement information may be registered as a standard setting.

[0021]

As described above, according to the present invention, since the image can be enlarged by providing the image enlargement means, it is possible to enlarge the hard-to-see characters and screens as necessary. Further, since the image enlarging means is incorporated in the OS, it can be applied to all application software. Furthermore, since the enlargement information setting means is provided so that the range of the image to be enlarged and the enlargement ratio can be set, the image can be enlarged as desired.

[Brief description of the drawings]

FIG. 1 is a diagram showing a principle configuration of an image enlargement device of the present invention.

FIG. 2 is a diagram showing an example of a state in which application software is started on an OS in which an image enlargement device is installed.

FIG. 3 is a diagram illustrating a state in which a start button of the image enlarging apparatus is selected with a pointing device such as a mouse, and a pull-down menu is opened.

FIG. 4A is a diagram illustrating an example of an enlargement ratio setting screen. (B) is a diagram showing an example of an enlargement range setting screen. (C) is a figure showing an example of a reference point setting screen.

FIG. 5 is a flowchart illustrating a procedure for enlarging an image.

[Explanation of symbols]

1 ... enlargement information setting means, 1a ... enlargement ratio setting unit, 1b
... Enlargement range setting section, 1c... Reference point setting section, 2... Enlargement information holding section, 3... Frame memory, 4... Image data acquisition section, 5. , 7 ... Display means.

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location G06T 1/00 G06F 15/66 450

Claims (3)

[Claims] 1. An image enlarging apparatus for enlarging an image on a display screen, an enlarging information setting unit for setting an enlarging ratio, an enlarging range, and a reference point as enlarging information, and an enlarging information holding unit for holding the enlarging information. A frame memory that holds display screen data; an image data acquisition unit that acquires the display screen data and cuts out image data to be enlarged based on the reference point and the enlargement range; Image enlarging means for enlarging the enlarged data at the enlargement rate, generating enlarged data, superimposing the enlarged data on the display screen data to generate a synthesized screen, and displaying means for displaying the synthesized screen. An image enlarging device comprising: 2. The image processing apparatus according to claim 1, wherein the enlarged information holding unit, the image data acquiring unit, the image enlarging unit, and the image synthesizing unit are functions incorporated in an OS (Operating System) of the information processing apparatus. The image enlargement device according to claim 1, wherein 3. The enlargement information setting means, when setting the enlargement ratio, the enlargement range, and the reference point, arbitrarily selects one from a plurality of candidates preset for each. The image enlargement apparatus according to claim 1, wherein the enlargement information is set.