JPH04205025A - Display color control method for output unit - Google Patents

Abstract

PURPOSE:To prevent the influence to an another job by transferring a display color stored in a color table prepared at every job to a pallet table and changing the display color stored in the color table. CONSTITUTION:A job switching key 55 is depressed to select a job at a switching destination. Further, the data in a vertual color pallet table at the switching destination is set in each color pallet table at a hardware side. Thus, the job a vertual image used by the display color expected with at the switching destination is displayed on a color table 5. Then, in color pallet tables 51-54 at a hardware side, the data in color tables 11-14 used with job 1 are registered. In the case of depressing switching key 55 to switch the job from the job 1 to the job 2, the data in color tables 21-24 are registered in tables 51-54, and a vertual screen 20 is displayed on display 5.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is a terminal system equipped with an output device such as a color display, in which the display color of multiple jobs that are processed in parallel is independently controlled for each job. The present invention relates to a display color control method for an output device that makes it possible to control the display color of an output device.

(Prior Art) FIG. 2 is a diagram showing the configuration of a system using a conventional method.

This figure shows display control by software when switching jobs during multi-job execution. In the illustrated system, jobs 1', 2', 3', and 4' are executed and operate independently. In this case, job 1
' to 4' use virtual screens 10' to 40', respectively. A job switching key 55' on the keyboard is used to associate the job screen displayed on the display 5'. For example, job 1 is displayed on display 5'.
If job 2' is selected with the job switching key 55' while the virtual screen 10' used by job 1' is displayed, the virtual screen 10 used by job 1' is displayed on the display 5'. Display control is performed such that ' disappears and a virtual screen 20' used by job 2' is newly displayed. At this time, regarding display colors, jobs 1' to 4' all operate using information preset in 51' to 54'.

The hardware includes color palette tables 51', 52', 53', and 54' for color display. The displayed colors on the color display 5' are based on these color palette tables 51', 52', 53'.
, 54'.

(Problems to be Solved by the Invention) However, the above-described conventional technology has the following problems.

That is, in the conventional method described above, each job 1' in FIG.
4' will share each color palette table 51' to 54'. In other words, if any of the color palette tables 51' to 54' is changed in a certain job, the changed setting values will also be changed in other jobs.
In other words, the display color will be displayed on the color display 5'. Therefore, there is a problem in that the display color cannot be freely changed for each job.

The present invention has been made with attention to the above points, and provides a display color control method for an output device that does not affect other jobs even if the display color of each job is changed on a color display. The purpose is to

(Means for Solving the Problem) The display color control method for an output device of the present invention prepares a color table for each job in correspondence with a palette table that determines the display color of the output device, and when switching between jobs. , the display colors for each job stored in the color table are transferred to the palette table, and the display colors of the output device can be changed for each job by changing the display colors stored in the color table for each job. It is characterized by the fact that it is carried out in the following manner.

(Function) In the display color control method of the output device of the present invention, in order to change the display color of the output device, first, the display color stored in the color table prepared for each job is changed. From this color table, the display colors are transferred to a palette table that determines the display colors of the output device. As a result, the display color of the output device is changed for each job. Therefore, in a multi-job software environment, the independence of the color display function of each job to the output device can be maintained.

(Example) FIG. 1 is a diagram showing the configuration of a system using the method of the present invention.

In the illustrated system, jobs 1 to 4 are being operated.

Color tables 11 to 14.21 corresponding to each job 1 to 4
~24.31~34.41~44 are provided. These color tables are secured, for example, on the main memory of the computer, and correspond to the hardware color palette tables 51 to 54. Therefore, the details of the configuration of the color table are the same as the details of the configuration of the color palette table.

Next, details of the hardware color palette table will be explained.

FIG. 3 is a diagram showing color display specifications.

The colors that can be simultaneously displayed on a color display are 16 out of 4096 colors for both the text part and the background color. The ruled line color is a medium color among the 16 colors. The graphic part has 16 colors out of 4096 colors.

FIG. 4 is a diagram showing a hardware color display mechanism.

The hardware includes the aforementioned color palette tables 51, 52, 53, and 54 for color display. The color palette tables 51.52.53.54 each include color palettes 71.72.73.74.

This color display mechanism is based on the font color of the text section in Figure 3.
This is in accordance with the specifications for the background color, ruled line color, and display color of the graphic section. For example, in the case of text color, 16 gradations can be specified for each of red, green, and blue on the color palette 71 for text color. As a result, there are 16x16x16=4096 color combinations. The character color palette table 71 has 16 color tables. Therefore, the color display 5 can simultaneously display 16 colors out of 4096 colors.

In the software, these color palette tables 5
It is necessary to set each of the color palettes 71 to 74 above 1 to 54 in advance. Then, the software can display a certain color set in the color palettes 71 to 74 by specifying each palette number that is actually desired to be displayed. For example, in the case of the text section display 60, the text color section 61 is set to color palette number 5, and the background color section 62 is set to color palette number 5.
By specifying color palette number 1, the text portion display 60 is performed as follows. That is, the text color portion 61 is 5 of the text color color palette table 51.
The background color portion 62 is displayed in a certain color according to the color palette table 52 for background colors.
It will be displayed in a certain color by setting it in the first color palette.

Next, the operation of the system shown in FIG. 1 described above will be explained according to the procedure shown in FIGS. 5 and 6.

FIG. 5 is a flowchart showing the processing procedure when switching jobs according to the method of the present invention.

First, it is determined whether or not the job switching key 55 has been pressed (step Sl). Then, the job to switch to is selected (step S2).When switching jobs, conventionally, only the virtual screen used by the job to switch to is displayed on the color display. In addition, the data of the virtual color palette table used by the switching destination job is set in each color palette table on the hardware side (step S3). This results in
The virtual screen used by the switching job is displayed on the color display 5 in the display color expected by the switching destination job (step S4). For example, assume that the color display 5 displays a virtual screen 1° that is used by job 1. At this time, data of color tables 11 to 14 used by job 1 are registered in color palette tables 51 to 54 on the hardware side, respectively. Here, when the operator switches from job 1 to job 2 by pressing the job switching key 55, the color palette tables 51 to 54
The data of the color tables 21 to 24 used by job 2 are registered in , and the virtual screen 20 is displayed on the color display 5.

Next, the color change processing procedure from each job being executed will be explained.

FIG. 6 is a flowchart showing the processing procedure when requesting a color change according to the method of the present invention.

When a certain job requests a color change, the first step is to change the color table used by that job (step S).
5). After that, if the virtual screen of the job that requested the color change is displayed on the color display 5 (step s6), the data of the changed color table is registered in the color palette tables 51 to 54 on the hardware side. (Step S7). Furthermore, if the virtual screen of the job for which the color change has been requested is not displayed on the color display 5, no changes are made on the color palette tables 51 to 54 on the hardware side. For example, on the color display 5, if there is a color change request from job 1, color tables 11 to 14 used by job 1 are displayed.
and at the same time change the color palette tables 51 to 54 on the hardware side. However, when job 2 requests a color change, the virtual tables 21 to 24 used by job 2 are changed, but the color palette tables 51 to 54 on the hardware side are not changed.

In the above-described embodiments, the case where the output device is a display has been described, but the present invention is not limited to this, and can also be applied to a color printer or the like.

(Effects of the Invention) As explained above, according to the display color control method of the output device of the present invention, a virtual table is held for each job, so one job does not affect other jobs. It is possible to realize independent control of color display. This makes it possible, for example, to display ruled lines in red in one job and in white in another job. In addition, it is no longer necessary to fix the display color of the color display to just one color for the entire terminal system. For example, by using a large number of display colors of 4096 colors for each job, each display color can be used effectively. can be used.

[Brief explanation of the drawing]

Figure 1 shows the configuration of a system using the method of the present invention, Figure 2 shows the configuration of a system using the conventional method, Figure 3 shows the specifications of a color display, and Figure 4 Figure 5 shows the configuration of the hardware color display mechanism.
FIG. 6 is a flowchart showing the processing procedure when switching jobs according to the method of the present invention, and FIG. 6 is a flowchart showing the processing procedure when requesting a color change using the method according to the invention. 1 to 4...Job, 5...Color display, 1
0.20.30.40... Virtual screen for job use, 11.21.31.41... Virtual text color table for job use, 12.22.32.42... Virtual for job use 13.23.33.43... Virtual border color table for job use, 14.24.34.44... Virtual graph color table for job use, 51... Text part characters Color color palette table, 52... Text section background color color palette table, 53... Text section border color color palette table, 54... Graphic section color palette table, 5
5...Job switching key. Color display specifications Figure 3 Figure 5

Claims (1)

[Claims] A color table is prepared for each job in correspondence with a palette table that determines the display color of the display, and when switching jobs, the display color for each job stored in the color table is A display color control method for an output device, characterized in that the display color is transferred to a palette table and the display color is changed for each job by changing the display color stored in the color table for each job. .