JPH02162395A - Display control system - Google Patents

Abstract

PURPOSE:To easily decide whether an image on a display screen is monochromatic or colored by composing a monochromatic display device of an image input means, a means which decides whether the image is monochromatic or colored, and a means which makes the display mode different according to the decision result. CONSTITUTION:When the image is inputted through an I/F control part 10, it is decided whether the image is monochromatic or colored and '0' when the image is monochromatic or '1' when colored is stored in a flag 3a. The input image data are stored in preset address locations of a RAM 3, the addresses are updated for next data, and this operation is repeated until the input of the image is completed. When the storing process of the RAM 3 is completed, the data in the RAM 3 are transferred to a VRAM 5 and when the transfer is finished, the contents of the flag are decided; when the flag 3a indicates '0', a normal illumination display indication command is outputted from an LCD controller 6, but when '1', an indication for blinking display is outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display control method, and more particularly to a display control method for controlling the display of a monochrome display device.

[Prior Art] In recent years, image editing systems and electronic filing systems have appeared, and the operating environment for images has improved significantly. Such systems require high-resolution displays, and monochrome displays are often employed. The reason for this is that it is cheaper compared to color displays.
One reason for this is that priority is given to images that are printed out.

[Problems to be Solved by the Invention] By the way, when images are input to such a system, they are input from a video camera, an image scanner, or the like. For example, whether a video camera is color or monochrome, when displaying its input image, it naturally
It will be displayed in monochrome. Therefore, there is a problem in that it is not possible to determine whether the image being displayed is a multicolor image or a monochrome image.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a display control method that allows easy discrimination on a monochrome display as to whether an input image is color or monochrome.

[Means for Solving the Problem] The present invention for solving this problem includes the configuration shown below. That is, in a display control method for controlling the display of a monochrome display device, at least an input means for inputting an image, a discrimination means for discriminating whether the input image is monochrome or color, and based on the discrimination result of the discrimination means, at least A control means is provided for controlling the display of monochrome input images and color input images in different display formats.

[Operation] In the configuration of the present invention, the determining means determines whether the image inputted by the input means is monochrome or color. The control means is used to display them in a way that allows them to be distinguished.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<Explanation of outline of configuration (FIG. 1)> FIG. 1 is a block configuration diagram of an image processing apparatus in an embodiment.

In the figure, 1 is a CPU that controls the entire device, and 2 is a CPU
This is a ROM that stores the operation processing procedure of U1 (a program related to the flowchart shown in FIG. 2). 3 is C
This RAM is referred to as the work area of the PU1 and also temporarily stores images. Note that an area for a flag 3a is secured in the RAM 3 as shown in the figure. 4 is a liquid crystal display (hereinafter referred to as LCD), and 5 is a VRAM for developing bit image data to be displayed on the LCD 4.
It is. 6 is a VRAM under the control of CPU1.
LCD controller (hereinafter referred to as LCDC) that displays Kazuo expanded on LCD 4 and controls its display form
). 7 to 9 are printers each connected to the I/F control unit 10 of this device through dedicated cables;
Image scanner and video camera. The I/F control unit 10 converts signals from the image scanner 8 and video camera 9 into data for reading into the CPU 1, and controls data output to the printer 7. Also, a printer 7, an image scanner 8. Other components except the video camera 9 are connected via a data bus 100 and an address bus 200, respectively.

Explanation of the Principle By the way, it is well known that the NTSC system is currently used for television signals in Japan. Whether or not a television signal is in color can be determined by whether or not there is a color burst signal in the signal. Therefore, whether the video camera 9 in this embodiment outputs a color image or a monochrome image can be determined by determining whether or not this color burst signal is present.

In any case, data from the video camera 9 will be input via the I/F control unit 10, but the input data itself (actually converted to 8-bit data etc.) will be sequentially stored in the RAM 3. be done. Naturally, if the input image is a monochrome image, it is only necessary to store the luminance information, that is, the Y component data of the YIQ color system, in the RAM 3, and it is possible to determine that it is a color image by detecting the color burst signal. When detected, other I,Q
Component data is also stored in RAM3. Note that this determination result is stored in a flag 3a provided in the RAM 3.

When displaying the image stored in the RAM 3 on the LCD 4, the stored Y component data is developed (transferred) to the VRAM 5 via the LCD 6. After this, CPU 1
checks the flag 3a and instructs the LCDC 6 of the result. Specifically, when the image is a monochrome image, a normal display instruction is given, and when the image is a color image, an instruction is given to display the data in the VRAM 5 in a blinking manner. Therefore, the operator can determine whether the displayed image is a color image or a monochrome image by simply noting whether the displayed image is blinking (for example, blinking about three times per second).

Note that the image stored in RAM 3 is a color image,
When printing out the image with printer 7, YIQ
A color image can be printed by converting the color system data into, for example, Y, M, and C and outputting it through a predetermined procedure.

Also, regarding determining whether the image output from the image scanner 8 is a color image or a monochrome image, the data output from the color image scanner is normally in the RGB color system, so the data for each color component is input. The criterion for this judgment may be whether or not there has been a change in the data of each color component. And image scanner 8
When displaying an input image, only one of the color components is expanded into the VRAM 5, or it is converted to the YIQ color system, and only the Y component data is expanded into the VRAM 5 and displayed.

FIG. 3 and FIG. 4 show an image scanner 8 in the embodiment.
．． The display state of an image read by the video camera 9 is shown.

In the figure, 30 is the main body of the apparatus, and 31 and 32 are cables connecting each image input device 89 to the main body 30 of the apparatus.

As shown in the figure, if the image is input from the image scanner 8 and video camera 9 or is a color image, the LCD 4
The image above will be displayed blinking, while a monochrome image will be displayed normally.

<Explanation of Processing Procedure (FIG. 2)> The specific processing procedure of the CPU from image reading to display in the embodiment will be explained with reference to the flowchart of FIG. 2.

First, in step S1, it waits for an image to be input via the I/F control unit IO. When an image input is detected, the process proceeds to step S2, where it is determined whether the input image is color or monochrome. If it is monochrome, °°0゛° is stored in the flag 3a in step S3, and if it is color, °"1°' is stored in the flag 3a in step S4.
to be stored. Thereafter, in step S5, the input image data is stored in a preset address position in the RAM 3.

Then, in the next step S6, the address is updated for the next data, and these processes are repeated until it is determined in step S7 that image capture is completed.

Now, after the process of storing the image data in the RAM 3 is completed, the process proceeds to the next step S8, and the data in the RAM 3 is stored in the V
Transfer to RAM5. When the image transfer is completed, the content of the flag is determined in the next step S9.

When the flag 3a is O°, that is, when the input image is a monochrome image, the process proceeds to step S10, and a command for normal lighting display is output to the LCDC 6. Further, if it is determined that the flag 3a is 1°, the process proceeds to step Sll, and an instruction command to cause the LCD 6 to blink is output.

In this way, it is possible to display on a monochrome display so as to distinguish whether the input image is a monochrome image or a color image.

As described above, according to this embodiment, it is possible to display monochrome images and color images on a monochrome display device in a distinguishable manner.

In the embodiment, a binary liquid crystal display is used as an example of a monochrome display, but the present invention is not limited to this. Further, it goes without saying that the criteria for determining whether an image is a monochrome image or a color image may be determined using principles other than those in the embodiment.

Furthermore, in the embodiment, the color images are displayed blinking to make them distinguishable, but the present invention is not limited to this. The point is that it is sufficient to display them in a way that allows them to be distinguished.

[Effects of the Invention] As explained above, according to the present invention, since the display formats of a monochrome image and a color image are made different, it is easy to determine whether the image displayed on the monochrome display screen is one of them. It can be understood.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram of the image processing device in this embodiment, FIG. 2 is a flowchart for explaining the operation processing of the CPU in the embodiment, and FIGS. 3 and 4 are image input devices and displays in the embodiment. It is a figure showing correspondence with a screen. In the figure, 1...CPU, 2...ROM, 3...RA
M. 3a...Flag, 4...Liquid crystal display (LCD), 5
-VRAM, 6・LCD Coroller (LCDC),
7...Printer, 8...Image scanner, 9...
・Video camera, 10...I/F control unit, 10O...
- Data bus, 200... Address bus.

Claims (1)

[Scope of Claim] A display control method for controlling the display of a monochrome display device, comprising: an input means for inputting an image; a discrimination means for discriminating whether the input image is monochrome or color; and a discrimination result of the discrimination means. 1. A display control method comprising: control means for controlling the display of at least a monochrome input image and a color input image in different display formats based on the above.