JPS63214071A - Picture display device - Google Patents

Abstract

PURPOSE:To improve visual effects and to effectively execute the edition and processing of images by setting up a display scale capable of displaying the whole image on a display screen and displaying an image on the center of the display screen at the display scale. CONSTITUTION:A CRT controller 15 controls the display of a CRT 2 through a CRT memory 16. At first, the size of an original to be displayed is determined and its display scale is selected. Then, a referece address on the display screen is referred in accordance with a selected reduction ratio and paper size is selected from a paper size table so that the whole image is displayed on the center of the display screen. The reference address is set up on a start position and the data of set paper size sent from an image memory 21 are written in the CRT memory 16 in accordance with the set reduction ratio. The CRT controller 15 displays the whole image on the center of the display screen of the CRT 2.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for displaying images on a display device such as a CRT in an image processing and editing system.

(Problems to be solved by the prior art and the invention) Image editing that edits and processes images read by an image input device;
In an image processing system, editing and processing are performed by displaying an image on a display device.

Generally, the resolution of a display device is lower than the resolution of an image input device, and the number of display pixels is also smaller.

When performing editing or other operations on the display screen, it is necessary to know the overall layout, and it is necessary to display the entire image. Therefore, the image is appropriately reduced and displayed on the display device.

Conventionally, when displaying an image on a display device, the display was performed from a predetermined reference point (for example, the lower left corner). However, by bringing this full-screen display to the center of the screen, the visual effect can be enhanced and image editing and processing can be performed more effectively.

An object of the present invention is to provide a screen display method that displays an entire image in the center of the screen when displaying an image on an image display device.

(Means for Solving the Problems) The image display method according to the present invention includes a display device that displays data on a screen, and an editing device that displays and edits input image data on the screen of the display device. An image editing device comprising: - a magnification setting means for setting a display magnification that allows the entire image to be displayed on the display surface of the display device; and a display means for displaying the image at the center of the display surface at the display magnification set by the magnification setting means. It is characterized by comprising:

(Function) Displays the entire image in the center of the display screen at the set display magnification.

(Example) Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the image editing device 1 includes a CRT 2 as a display device, a floppy disk device 3 for loading an editing program, and a keyboard 4 for instructing editing.

FIG. 3 is a block diagram of the editing system of the image editing device l. A CPU II that controls the system controls a memory controller 13 , an image memory 14 , a CRT controller 15 , and a CRT memory 16 via a system bus 12 . The memory controller 13 controls access to the image memory I4 that stores image data.

A CRT controller I5 controls the display of the CRT 2 via a CRT memory I6 that stores display contents of the CRT 2. These devices 13 to 16 are connected to each other via an image bus 17.

The image reader 21 shown in FIG. 4 reads the image of the original 22 with a COD sensor, converts it into a binary value, and sends it to the image editing device I.

Note that a document conveying device 23 is provided on a platen above the image reader 21, and automatically feeds the document 22 onto the platen. At this time, the size of the original (A4 portrait, etc.)
is determined.

FIG. 1 shows the flow of screen display position setting.

In image editing, etc., it is necessary to display the entire layout of an image. In image processing and editing devices, the resolution of an input/output device and the resolution of a display device are generally different. Generally, the resolution of the display device is low. Therefore, when trying to display the entire image on the screen 31 of the display device 2, it is necessary to reduce the size of the image and display it. In this embodiment, a reduction ratio that allows the entire image to be displayed on the display device is selected based on the size of the input image and the display size of the display device, and the image is displayed.

First, the paper size (A4 portrait, etc.) of the document to be displayed is determined (step PI). The paper size is determined by automatic document feeder 2.
3 and sent from the image reader 21 to the CPUI.

Next, referring to the paper size table that the CPU 1 has internally, the number of vertical and horizontal pixels is determined (step P2). The table shows an example number for 400 dpi.

Margin table below Image input device resolution Next, the display pixel capacity of the display device (in this example, vertical
Display magnification (1/I) that allows the entire image to be displayed on the screen from 300 dots x 1700 dots horizontally.

1/2, 1/3, etc.) (step P3).

The selected magnification is set to 1/an integer because if the reduction ratio is not a simple one, there is a high possibility that the image will be reduced irregularly and the image will deteriorate.

Next, a reference address for display on the display screen (for example, the address at the upper left corner of the image) corresponding to the selected reduction ratio is referred to from the paper size table (step P4). This reference address is selected so that the entire image is displayed at the center of the display surface 31.

Next, using the reference address as the starting position, data on the set paper size sent from the image league 21 is written into the CRT memory 16 at the set reduction ratio (step P5). As a result, the CRT controller 15
The entire image is displayed at the center of the display screen of RT2.

5(a) to (d) respectively show letter vertical display (display reduction ratio 1/2), letter horizontal display (display reduction ratio 1/3), and legal display (display reduction ratio 1/3) within the display screen 31.
3) Indicates the position of the image in case of double letter vertical display (display magnification 1/3). At the bottom of the display screen 31, a menu (icon) 32 for editing is displayed. A display area 33 other than the menu 32 is an area where images can be displayed, and a small display area 34 for displaying the type of document, paper size, magnification, etc. is provided below it. An image is displayed in the center of the display area 33.

(Effects of the Invention) By displaying an image in the center of the screen of the display device, the visual effect is enhanced and the operability for the operator is improved.

[Brief explanation of the drawing]

FIG. 1 is a flowchart of display position setting. FIG. 2 is a perspective view of the image editing device. FIG. 3 is a flowchart of the image editing system. FIG. 4 is a perspective view of the image league. FIGS. 5(a) to 5(d) are diagrams each showing an example of image display. l...Image editing device, 2...CRT, 11...C
P.U. 21...Image League, 22...Manuscript, 31...
・Image, 31...Screen, 32...Menu, 33・
...Display area. Patent applicant: Minolta Canora Co., Ltd. Agent: Patent attorney: Mr. Aoki et al.

Claims (1)

[Claims] (1) In an image editing device that is equipped with a display device that displays data on a screen and editing means that displays and edits input image data on the screen of the display device, the entire image is displayed on the display surface of the display device. A screen display method comprising: a magnification setting means for setting a display magnification that can be displayed; and a display means for displaying an image at the center of a display surface at the display magnification set by the magnification setting means.