JP3017600B2 - Image display method and apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for displaying an image on a display device, and more particularly, to registering, retrieving, and retrieving images.
Editing, etc., for example, electronic filing system, DT
The present invention relates to an image display method and apparatus suitable for a CRT display such as a P system.

[0002]

2. Description of the Related Art In recent years, images such as various documents and drawings generated in large quantities are read by a scanner or the like, and the read images are stored as image data in a storage medium such as an optical disk.
The stored arbitrary image data is retrieved and output in a visually recognizable state by an output device such as a CRT display and a printer. In addition, the arbitrary image data displayed on the CRT display is enlarged, reduced, changed, and other documents. Electronic filing systems that enable various editing operations such as synthesis with image data are frequently used because of their small space for storing image data and high convenience such as high search efficiency.

As shown in FIG. 7, in such an electronic filing system, a CRT display 1 for displaying stored image data such as various documents and drawings has a rectangular display for displaying an image of a sheet. the longitudinal length direction 2a, is shown to the long side by a broken line in the figure located in the horizontal direction screen 2 in solid line in the drawing indicates to the long side is positioned in the vertical direction
Those freely switched to the horizontal length direction 2b is used. This means that, even if the same size paper is used for image data such as various documents and drawings, the portrait image data can be viewed normally with the longitudinal direction of the paper vertical, and the portrait image data can be normally displayed with the longitudinal direction of the paper horizontal. This is because both the horizontally long image data that can be visually recognized and the horizontally long image data are used together.

Further, in an electronic filing system, for example, an electronic filing system in which an A4 size is set to a full size, vertically or horizontally long image data such as various documents and drawings stored in a storage medium is displayed on a CRT display 1.
In order to display the image data on the CRT display, the image data is written into an image memory having a storage capacity corresponding to the image data of the A4 size document, and the image data written into the image memory is set to the portrait image data in the portrait direction. The display screen 2a of the CRT display 1 is selected and output to the display screen 2a of the CRT display 1 on the display screen 2a of the CRT display 1 in the landscape direction.

[0005]

In the above-mentioned conventional image display method and apparatus, as shown in FIG.
The vertical image data 4a, which is the image data 4 read into the predetermined image memory area 3, is output as it is on the display screen 2a in the vertical direction of the CRT display 1 and displayed, as shown in FIG. The horizontal image data 4b is converted to C
In the case where the image is output as it is on the display screen 2b in the horizontal direction of the RT display 1 and displayed, the images are normally displayed and no problem occurs.

However, as shown in FIG. 8B, for example, after the landscape image data 4b is output and displayed on the display screen 2b in the landscape direction of the CRT display 1, as shown in FIG. When the portrait image data 4a is output to the landscape screen 2b without switching the direction of the display screen 2 of the display 1, the image is rotated by 90 degrees and displayed. This is the same in the case of the vertically long display screen 2a.

Therefore, when the image data 4 is searched by sequentially outputting the image data 4 to the display screen 2 of the CRT display 1, if the direction of the display screen 2 of the CRT display 1 is always the same, the visibility is improved. There is a problem in that the CRT display 1 is rotated one by one in correspondence with the image data 4 displayed on the CRT display 1. In an extreme case, the CRT display 1 is rotated every one image data 4. In this case, the direction of the display screen 2 must be switched, which requires a great deal of labor and is inconvenient.

The present invention has been made in view of these points, and overcomes the above-mentioned problems in the conventional art.
Whether it is portrait image data or landscape image data,
It is another object of the present invention to provide an image display method and apparatus capable of always displaying image data on a CRT display in a predetermined normal pattern, regardless of whether the display screen of the CRT display is in a portrait orientation or a landscape orientation. .

[0009]

Means for Solving the Problems] image display method of the present invention described in claim 1 for achieving the above object is substantially rectangular
Vertical or horizontal orientation of the display screen
Images stored in the image memory on a display device that can be switched
An image display method for displaying the image data, the longitudinal direction of the display screen of the display device regardless of whether a vertical orientation or the landscape orientation, the image data of the image data to the display device
The image data and the display screen are displayed in a predetermined display pattern having a portrait or landscape orientation, and when the image data and the display screen have different longitudinal directions, at least a part of the image data is displayed. .

According to a second aspect of the present invention, there is provided an image display apparatus according to the second aspect, wherein an arrangement of a substantially rectangular display screen in a longitudinal direction is set to a vertically long direction.
An image display device having a display device that can be switched in a horizontal or horizontal direction , comprising: an image memory having an area capable of storing image data of at least one screen;
A display control unit having a vertically long image output circuit suitable when the longitudinal direction of the surface is vertically long and a horizontally long image output circuit suitable when the longitudinal direction of the display screen is horizontally long, and an image output circuit of the display control unit. And a switching unit for selectively switching. According to a third aspect of the present invention, in the image display device according to the second aspect, the switching unit selects the portrait image output circuit when the longitudinal direction of the display screen is the portrait direction, and selects the portrait image output circuit. When the longitudinal direction is the horizontal direction, the horizontal image output circuit is selected.

[0011]

By operating the image display device of the present invention in accordance with the image display method of the present invention, vertically or horizontally long image data is temporarily stored in an image memory area, and each of the image data is displayed. The display unit can display the image data in a predetermined pattern on the display screen of the display device in correspondence with the longitudinal direction of the display screen of the display device and each image data from the display unit, and display the image data of the portrait or landscape format on the display device. Regardless of whether the longitudinal direction of the screen is the portrait direction or the landscape direction, the image data is stored on the display device.
Prescribed display pattern consisting of portrait or landscape data
By displaying the image data , at least a part of each image data can be displayed on the display screen of the display device in a predetermined pattern, so that the problem of poor visibility can be surely prevented. And for the above reasons,
It is preferable that the switching unit selects the vertically long image output circuit when the longitudinal direction of the display screen is the vertically long direction, and selects the horizontally long image output circuit when the longitudinal direction of the display screen is the horizontally long direction.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a system block diagram showing a configuration of a main part of an embodiment in which an image display method according to the present invention is applied to an image display apparatus. FIG. 2 is a vertical image area and a horizontal image area of an image memory. FIG.

As shown in FIG. 1, a system of an image display device to which the image display method of the present invention is applied includes an appropriate CP for controlling various processes such as image storage, retrieval, and editing.
The CPU 7 disposed on the U board 6 and the display screen 2 having a substantially rectangular shape as in the related art are displayed in a vertical direction in which the output scanning order is vertical.
The horizontal direction, in which the order of the long direction 2a and the output scan is the horizontal direction
2b, a CRT display 9 as a display device 8 which can be switched between the CPU 7 and the CRT display 9
And the graphic board 10 interposed therebetween.

The graphic board 10 has a read / write control unit which reads desired image data 4 from an external storage device or a scanner (not shown) based on at least a control command from the CPU 7 and writes the image data 4 into an appropriate image memory 11 described later. (Hereinafter referred to as an R / W control unit) 12, an image memory 11 having an appropriate storage capacity for expanding the portrait image data 4a or the landscape image data 4b, and sending the image data 4 to a desired display device 8. at least
The longitudinal direction of the display screen 2 of the CTR display 9 is vertically long
Image data output circuit 13a, which is a vertically long image output circuit suitable for the case of orientation, and the display screen of the CTR display 9.
2, a display controller 14 having an image data output circuit 13 including a horizontally long image data output circuit 13b, which is a horizontally long image output circuit suitable for the case where the longitudinal direction is the horizontally long direction, and the state of the display screen of the display device 8 (display screen And a switching unit 15 for selectively switching between the output circuits 13a and 13b of the display control unit 14.

The image memory 11 will be described in further detail. As shown in FIG. 2, the image memory 11 of the present embodiment stores the longitudinal direction of an image for one screen , for example, A4 portrait.
As the image area 16 for storing portrait image data 4a corresponding to long images in the vertical direction (longitudinal direction), vertical image area 16a shown a long solid-line rectangle in the vertical direction in the drawing
And the longitudinal direction of the image for one screen is horizontal like A4 horizontal
Direction Horizontal image data 4b corresponding to long images in (lateral direction)
And a horizontal image area 16b indicated by a dashed rectangle long in the horizontal direction in the figure.
In order that a part of each image area 16a, 16b overlaps,
The upper left corner in the figure is formed as a common origin.

When the storage capacity of the image memory 11 for forming the vertical image area 16a and the horizontal image area 16b is large, the image areas 16a and 16b may be individually provided. It is not limited. That is, as the image memory 11,
Can store image data 4 for one screen
If it is.

Next, the operation of the image display method according to the present embodiment will be described with reference to the flowcharts shown in FIGS.

First, the R / W control unit 12 reads desired image data 4 from an appropriate external storage device such as an optical disk (not shown) based on a control command from the CPU 7, and writes (develops) the image data 4 to the image memory 11. )I do.

The operation will be further described. As shown in FIG. 3, first, in step ST10, it is determined whether the image data 4 to be read is portrait image data 4a or landscape image data 4b. Is the step ST11a
Then, the vertically elongated image data 4a is developed in the vertical image area 16a of the image memory 11. If the determination in step ST10 is the horizontal image data 4b, the process proceeds to step ST11b, where the horizontal image data 4b is developed in the horizontal image area 16b of the image memory 11.

Next, the image data 4 written in the image memory 11 is supplied to the vertical image data output circuit 13a or the horizontal image data output circuit 1 provided in the display control unit 14.
Any one of 3b is selected based on a command from the switching unit 15 and output to the CRT display 9.

This operation will be further described. As shown in FIG. 4, first, in step ST20, the switching unit 15 sets
Whether the longitudinal direction of the display screen 2 of the RT display 9 is the vertical direction 2a or the horizontal direction 2b is determined based on a status signal or the like from the CRT display 9, and when the display screen 2 of the CRT display 9 is the vertical direction 2a. Proceeds to step ST21a, and selects the portrait image data output circuit 13a of the display control unit 14. Then, the step S
If the determination at T20 is that the display screen 2 of the CRT display 9 is in the horizontal direction 2b, the process proceeds to step ST21b, and selects the horizontal image data output circuit 13b of the display control unit 14. That is, the switching unit 15 selects the vertically long image data output circuit 13a which is a vertically long image output circuit when the longitudinal direction of the display screen 2 is the vertically long direction 2a, and selects the horizontally long image when the longitudinal direction of the display screen 2 is the horizontally long direction 2b. The horizontal image data output circuit 13b as an output circuit is selected.

Then, the image data 4 is transmitted to the CRT display 9 via the selected circuit of the image data output circuit 13.
Output to

By repeating the above operation, C
The image data 4 can be sequentially displayed on the display screen 2 of the RT display 9.

Next, the operation of the present embodiment having the above-described configuration will be described.

First, the display screen 2 of the CRT display 9
The case where the image data 4 is displayed by setting the longitudinal direction to the longitudinal direction 2a will be described.

In this embodiment, the vertical image data 4a is stored in the vertical image area 1 of the image memory 11 as described above.
6A, and the vertical image data 4a is displayed on the display screen 2a in the vertical direction of the CRT display 9 by the vertical image data output circuit 13a (image data 4a).
With the match being with) the longitudinal direction and both longitudinal direction of the display screen 2 a longitudinal direction, on the CRT display 9 in a state where the entire image can be visually recognized successfully portrait image data 4a as shown in a of FIG. 5 Can be displayed.

Similarly, the horizontal image data 4b is developed in the horizontal image area 16b of the image memory 11, and the horizontal image data 4b is displayed on the display screen 2b by the horizontal image data output circuit 13b in the horizontal direction of the CRT display 9. (When both the longitudinal direction of the image data 4 and the longitudinal direction of the display screen 2 coincide in the horizontal direction), all the images of the horizontal image data 4b are normally displayed as shown in FIG. It can be displayed on the CRT display 9 in a visible state.

Further, the horizontal image data 4b is expanded in the horizontal image area 16b of the image memory 11, and the horizontal image data 4b is converted into a C image by the vertical image data output circuit 13a.
When displaying on the display screen 2a having a longitudinal length direction of the RT display 9, for example a portrait orientation of the display screen 2a CR
When the landscape image data 4b is displayed while the landscape image data 4a is continuously displayed on the T display 9, as shown in FIG. 5C, at least a part of the landscape image data 4b is displayed. Can be displayed on the CRT display 9 in a state where it can be visually recognized normally (a state in which a part of the horizontally long image data 4b is cut off).

The vertical image data 4a is stored in the image memory 1
1 in the vertical image area 16a, and the vertical image data 4a is converted into a CR by the horizontal image data output circuit 16b.
When displaying on the display screen 2b in the landscape orientation of the T display 9 , for example, a CRT with the display screen 2b in the landscape orientation is used.
When the vertically long image data 4a is displayed while the horizontally long image data 4b is continuously displayed on the display 9, at least a part of the image of the vertically long image data 4a is displayed as shown in FIG. The image can be displayed on the CRT display 9 in a state where it can be recognized normally (a state in which a part of the vertically long image data 4a is cut off).

Accordingly, in this embodiment, the portrait image data 4a and the landscape image data 4b are displayed on the display screen 2 of the CRT display 9 in the portrait direction or the landscape direction.
Rukani Regardless, without rotating the image data 4, it can be displayed in a state that can normally visible.
Then, the portrait image data 4a and the landscape image data 4b
To the respective image areas 16a, 16a of the image memory 11.
Expand to 6b, the image data 4a, the image data output circuit 13a corresponding to 4b, depending on the longitudinal Direction of the display screen 2 of the CRT display 9 by 13b, the image data 4
Since a and 4b are output to the CRT display 9, as shown in FIGS. 5C and 5D, when a part of the image data 4 is cut off, the display screen 2 of the CRT display 9 is displayed. of direction Ru switching (display screen rotate 90 degrees
By the rolling causes) This is shown in b in Figure a and 5 5
In this way, it is possible to instantaneously make all image data 4 normally visible.

When a part of the image data is cut off, an appropriate control unit is provided so that the image data 4 of the cut part can be scrolled and displayed on the display screen 2. it can.

In this embodiment, information on the direction (vertical direction, horizontal direction) of the display screen 2 of the CRT display 9 is obtained by appropriate detecting means (not shown) provided on the CRT display 9 such as a limit switch. The information is transmitted to the switching unit 15 to switch the image data output circuit 13 based on this information. However, this information is transmitted to the CPU 7 and the image data output circuit 13 is switched by a control command from the CPU 7. The present invention is not particularly limited to this embodiment.

The display screen 2 of the CRT display 9
In order to change the direction of the CRT display, the output scanning order is set to the vertically long display screen 2a so that the timing of the image data 4 received by the CRT display 9 becomes the same.
In the display 9, as shown by an arrow in FIG.
CRT with a vertical display screen 2b and a horizontally long display screen 2b
In the display 9, as shown by an arrow in FIG.
To Rukoto is desirable horizontally.

Further, the present invention is not limited to the above-described embodiment, but can be modified as required.

[0036]

According to the image display method and apparatus of the present invention as described in the foregoing, whether horizontally long image data and would be vertically long image data and the longitudinal Direction of the display screen of the CRT display is in portrait orientation Regardless of whether the image is in the horizontal direction or not, it has an extremely excellent effect that image data can always be displayed in a predetermined normal pattern on the CRT display.

[Brief description of the drawings]

FIG. 1 is a system block diagram showing a configuration of a main part of an embodiment in which an image display method according to the present invention is applied to an image display device.

FIG. 2 is a conceptual diagram illustrating a vertical image area and a horizontal image area of an image memory.

FIG. 3 is a flowchart for explaining expansion of image data to an image memory;

FIG. 4 is a flowchart illustrating output of image data to a display device.

5A to 5D are explanatory diagrams illustrating a relationship between image data and a display screen.

FIGS. 6A and 6B are explanatory diagrams illustrating the order of output scanning.

FIG. 7 is a front view showing a conventional CRT display.

FIG. 8 is an explanatory diagram for explaining a conventional relationship between image data and a display screen.

[Explanation of symbols]

 2 Display screen 4 Image data 4a Vertical image data 4b Horizontal image data 7 CPU 9 CRT display 11 Image memory 13 Image data output circuit 13a Vertical image data output circuit 13b Horizontal image data output circuit 15 Switching section 16a Vertical image area 16b Horizontal image region

Claims (3)

(57) [Claims] 1. An arrangement of a substantially rectangular display screen in a longitudinal direction.
Image on display device that can be switched to portrait or landscape orientation
In the image display method of displaying the image data stored in the memory, regardless of whether the longitudinal direction of the display screen of the display device is a vertical direction or horizontal direction, the image data to the display device
The image data is displayed in a predetermined display pattern having a portrait or landscape orientation, and when the image data and the display screen have different longitudinal directions, at least a part of the image data is displayed. Image display method to be used. 2. An arrangement of a substantially rectangular display screen in a longitudinal direction.
Has a display device that can be switched vertically or horizontally
That the image display device, and an image memory having a region which enables storing the image data of at least one screen, the longitudinal direction of the elongated image output circuit suitable for the case of longitudinal direction portrait orientation of the display screen and the display screen Horizontal landscape
An image display device comprising: a display control unit having a horizontally long image output circuit suitable for the case; and a switching unit for selectively switching an image output circuit of the display control unit. 3. The switching section selects the portrait image output circuit when the length direction of the display screen is the portrait direction, and selects the landscape image output circuit when the length direction of the display screen is the landscape direction. The image display device according to claim 2, wherein: