JP2633297B2 - Image display device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device for inputting image information such as a document or a drawing from a mass storage device or the like and displaying the image information on a screen.

2. Description of the Related Art Conventionally, as this type of image display device, when an entire image of a document or the like is displayed on a screen without changing its orientation, and an operator specifies a reduction / enlargement ratio and a rotation angle by using a keyboard, a mouse, or the like, A device (conventional example) for reducing / enlarging and rotating an image is known.

Further, there is known a device (conventional example) for performing image size conversion at a magnification such that an entire image is displayed on a screen based on size information added to the image and displaying the image (Japanese Patent Laid-Open No. 58-129679). issue).

According to the above-described configuration of the related art, the operator specifies the reduction / enlargement ratio and the rotation angle as necessary,
The image can be displayed in an easily viewable size and orientation. However, it is troublesome to perform such designation operation every time an image is displayed. Further, it is often necessary to repeat the same designation operation until the display state becomes optimal. Furthermore, since reduction / enlargement and rotation processing of an image takes a relatively long time, if the designation operation is repeated many times, it takes a considerably long time until an optimum display is obtained. Thus, the conventional example has a problem in operability.

On the other hand, according to the configuration of the above-described conventional example, improvement in operability can be expected as compared with the conventional example. However, the size conversion rate is automatically determined on the assumption that the entire image is displayed, and the image is not automatically rotated. As a result, a large image is displayed reduced to a small size that matches the screen size, and an enlargement operation is required to clarify the details. There was room for improvement in operability, such as being displayed and requiring a rotation operation.

The present invention has been made in view of the above-described problems, and the size, orientation, and display range of a display image are automatically controlled without an operator performing a special operation each time an image is displayed. It is an object of the present invention to provide an image display device capable of obtaining a desired display state.

Means for Solving the Problems The present invention has been made in view of the above-mentioned problems, and the invention according to claim 1 has an image information and an input unit for inputting the size of the image information; Display information storage means for storing display information comprising correspondingly specified enlargement / reduction ratio, rotation angle, and information about the display range, and storage means for storing the display information and the image information in association with each other And display control means for performing processing of the display information corresponding to the image information and displaying the image information when displaying the image information.

According to a second aspect of the present invention, there is provided an image information, an input means for inputting the size and resolution of the image information, and an enlargement / reduction ratio and a rotation angle designated corresponding to each size and resolution of the image information. A display information storage unit that stores display information including information related to a display range and a storage unit that stores the display information and the image information in association with each other;
Display control means for performing processing of the display information corresponding to the image information and displaying the image information when displaying the image information.

FIG. 1 is a functional configuration diagram of an image display device according to the present invention, wherein 1 is an input unit, 2 is a storage unit, 3 is a readout unit,
Denotes an image processing unit, and 5 denotes a display unit.

The input unit 1 is a part for inputting image information (image information) such as a document and its size information, or image information and its size information and resolution information from the outside. If the source of the information such as the image information is a large-capacity storage device that stores the encoded image information, for example, an optical disk device, the input unit 1 also decodes the encoded image information into raw image information.

The storage unit 2 stores display control information relating to a pre-designated image reduction / enlargement ratio, rotation angle, and display range for each image size or each size and resolution.

The reading section 3 reads from the storage section 2 the size information input by the input section 1 or the display control information corresponding to the size information and the resolution information.

The image processing unit 4 performs reduction / enlargement and rotation of the image information input from the input unit 1 at the reduction / enlargement ratio and the rotation angle specified by the display control information read by the reading unit 3. The portion within the display range specified by the display control information of the processed image information is output.

The display unit 5 is a part that displays output image information of the image processing unit 4 on a screen.

When image information and size information or image information and size information and resolution information are input by the input unit 1, size information or display control information corresponding to the size information and resolution information is read from the storage unit 2 by the reading unit 3. Is read. In accordance with the display control information, the image processing unit 4 performs enlargement, reduction, and rotation processing on the input image information, and outputs a portion within the display range of the processed image information.
Displayed on the screen by the display unit 5.

In this way, not only the enlargement / reduction ratio but also the rotation angle and the display range are automatically controlled according to the display control information specified in advance for each size or size and resolution of the input image information.

For a specific device user, the size, the direction at the time of input, the part to be displayed, and the like are substantially determined depending on the type of the document.

Therefore, by appropriately specifying the display control information so that the display state desired by the device user is obtained,
Without having to perform cumbersome operations such as reduction / enlargement and rotation each time an image is displayed, images having different sizes and resolutions can be quickly displayed in an easy-to-view size and direction, greatly improving usability.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a schematic configuration diagram of an image display device according to one embodiment of the present invention. This image display device inputs encoded image information such as a document or drawing from an image storage unit 6 such as an optical disk device together with its size information and resolution information,
It is displayed on the screen.

7 is a central processing unit (CP
U) and 8 are main storages for storing programs and data for operating the central processing unit 7. The main storage device 8 also stores a display table 9 which is a table of display control information described later. 10 is the image storage unit 6
This is an interface with the CPU control bus 11. 12 is an image memory for temporarily storing image information, 13 is a decoding unit for decoding coded image information from raw image information, and 14 is a reduction / enlargement or reduction / enlargement / rotation process for image information. This is an enlargement / rotation processing unit. 15 is a CRT display device, 16 is a display control unit that controls its display and interfaces with the CPU control bus 11,
A display memory 17 for storing display data is built-in. Reference numeral 18 denotes a keyboard, 19 denotes a mouse (pointing device), and 20 denotes a control unit thereof. 21 is an image bus.

FIG. 3 is an explanatory diagram of the contents of the display table 9. In addition,
The target image size is A3, A4, A5, B5, A3 half, B4 half, and the resolution is 400 dots / line and 200 dots / line. The CRT display device 15 has a screen size of A4 and the resolution Is 100 dots / line, vertical type.

In FIG. 3, “reduction / enlargement ratio No.” corresponds to “No.” in Table 1. For example, “1/2” is No. 1 when the resolution is 400 dots / line. Reduce / Enlarge by 2
The No. 2 reduction / enlargement ratio is shown for 00 dots / line.
"Range" is the range of the image to be displayed.
Indicates either “upper half” or “lower half”. “Rotation” is a rotation angle, and “A3”, “B5”, etc. are the sizes of the input image. The rectangular frame is the display screen, and the hatched area inside is the image. The display table 9 is “display
No. '' has another designation flag, and the device user specifies one of the `` display Nos. '' The corresponding display control information can be specified.

The operation of the image display device configured as described above will be described below. FIG. 4 is a flowchart showing the flow of the operation.

When the designation of an image and the designation of display are input by the keyboard 18 or the mouse 19, in step 22, under the control of the central processing unit 7, the encoded image information of the designated image, its size information and resolution information are stored from the image storage unit 6. Are read and input via the interface unit 10. The encoded image information is stored in the name memory 12, and the size information and the resolution information are stored in specific storage locations of the main storage device 8.

In the next step 23, the decoding unit 13 is activated by the central processing unit 7, and the decoding unit 13
The coded image information in 12 is read and decoded through the image bus 21, and the raw image information is stored in the image memory 12 through the image bus 31.

The above is the operation of the input unit 1 in FIG. That is, in the present embodiment, the functions of the input unit 1 are realized by the hardware and programs of the central processing unit 7, the interface unit 10, the image memory 12, and the decoding unit 13.

When the decoding unit 13 issues a notice of the end of the decoding operation, the CPU 7 reads out the display control information corresponding to the size information and the resolution information from the display table 9 in step 24. That is, the read unit 3 in FIG. 1 is realized by hardware and a program of the central processing unit 7, and the main storage device 8 is used as the storage unit 2.

Here, the designation flag of the display No. 1 in the display table 9 is set, and the input image information is size A4, image degree information
Assume 400 dots / line (case). In this case, the contents of the display control information to be read are the reduction / enlargement ratio corresponding to No. 7 in Table 1, the rotation angle is 0 °, and the display range is “entire”.

It is assumed that the designation flag of the display No. 5 is set, and the input image information has a size B4 and a resolution of 200 dots / line (case). In this case, the contents of the display control information read out include a reduction / enlargement ratio corresponding to No. 16 in Table 1, a rotation angle of 90 °, and a display range of “upper half”.
It is.

In the next step 25, the central processing unit 7
The display control information is given to the enlargement / rotation processing unit 14, and the enlargement / rotation processing unit 14 is started. In the reduction / enlargement / rotation processing unit 14, the raw image information in the image memory 12 is read out via the image bus 21, and the reduction or enlargement processing and rotation processing of the magnification and the rotation angle specified by the display control information are performed. The processed image information is transferred to the image bus 21.
Is stored in the image memory 12.

When the reduction / enlargement / rotation processing unit 14 issues a notification of the end of this processing, in step 26, the control of the central processing unit 7 causes the image information in the image memory 12 to fall within the display range specified by the display control information. The part is connected to the display memory 17 in the display control unit 16 via the image bus 21.
Transferred to The image information transferred to the display memory 17 is displayed on the screen of the CRT display device 15 under the control of the display control unit 16.

That is, in this embodiment, the image processing unit 4 in FIG. 1 is realized by hardware and programs such as a reduction / enlargement / rotation processing unit 14 and a central processing unit 7, and the display unit 5 is a display control unit. 16 and the CRT display device 15.

Here, in the case described above, the entirety of the input image is displayed on the screen in the same size and the same direction. On the other hand,
In the above case, the input image is enlarged to A3 size and rotated 90 °, and only the upper half is displayed on the screen.

In this embodiment, since the display control information is specified for each image size and resolution, it is possible to easily display images having different sizes and resolutions. However, when the resolution is constant, the display designation information may be designated for each size.

The display control information need not always be stored in the form of a table as described above, but may be stored in any storage format that allows reading of the corresponding designated display control information based on the size information or the size information and the resolution information. May be.

The method of specifying the display control information is arbitrary. For example, an image corresponding to the contents of the display table 9 is displayed on the screen of the CRT display device 15 and displayed on the screen by the mouse 19.
It would be convenient to let o.

Effects of the Invention As is clear from the above description, the present invention stores display control information designated by size or by size and resolution, and supports image size information or size information and resolution information. According to the display control information of the reduction / enlargement ratio, the rotation angle, and the display range, not only the reduction or enlargement of the image information, but also the rotation and the display range are automatically controlled, so that the display state desired by the device user is obtained. By properly specifying the display control information, it is possible to display the entire image or a necessary portion in various sizes and resolutions in an easily viewable size and orientation. There is no need to perform complicated operations such as enlargement and rotation, and the operability is greatly improved.

[Brief description of the drawings]

FIG. 1 is a functional configuration diagram of an image display device according to the present invention, FIG. 2 is a schematic configuration diagram of an image display device according to an embodiment of the present invention, FIG. 3 is a diagram for explaining the contents of a display table, and FIG. It is a flowchart for operation | movement description. 1 ... input unit, 2 ... storage unit, 3 ... readout unit, 4 ...
... Image processing unit, 5 ... Display unit, 6 ... Image storage unit, 7 ...
Central processing unit 8, Main storage unit 9, Display table 12, Image memory 13, Decoding unit 14, Reduction / enlargement / rotation processing unit 15, CRT display unit 16,
...... Display control unit.

Claims (2)

(57) [Claims] An input means for inputting image information and a size of the image information, and display information comprising information relating to an enlargement / reduction ratio, a rotation angle, and a display range designated corresponding to the size of the image information. Display information storage means for storing the stored information, storage means for storing the display information and the image information in association with each other, and displaying and processing the display information corresponding to the image information when displaying the image information An image display device comprising: And input means for inputting image information and the size and resolution of the image information, and information relating to an enlargement / reduction ratio, a rotation angle, and a display range designated according to the size and resolution of the image information. Display information storage means for storing display information in association with each other, storage means for storing the display information in correspondence with the image information, and display information corresponding to the image information when displaying the image information And a display control means for performing and displaying the image.