JPS6395583A - Plotting picture display method for graphic input device - Google Patents

Abstract

PURPOSE:To make the best use of the resolution that a picture display means has by switching a picture display for a graphic and the display of a synthetic picture for a command according to a value that a position input means indicates. CONSTITUTION:Based on the value that the position input means 5 indicates, a comparison means 6 judges whether the value shows a plotting domain on the display screen of a picture display means 4. If so, a picture synthesizing means 3 selects only a picture memory 1 for displaying a graphic, and the overall display picture of the picture display means 4 is ready for displaying a plotting. If not, the picture synthesizing means 3 synthesizes an output from the picture memory 1 for displaying a graphic and an output form a memory 2 for displaying a command, and a synthetic picture is displayed. Thus, since the entire domain of the picture display means can be effectively used at the time of plotting a picture, a wide picture plotting screen is attainable.

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a graphic input device for a computer having a graphic screen, and particularly to a mouse.

The present invention relates to a drawing screen display method suitable for registering figures as computer files in a simple drawing device using position input means such as a digitizer.

(Prior Art, Problems to be Solved by the Invention) □ The drawing screen display method in the conventional graphic input device of a computer having a graphic screen is to display graphics and commands on an image display means such as a CRT or plasma display. are displayed on the composite screen at the same time. Therefore, since the command display part is displayed even during drawing with one plotter, the display area of the graphic display part becomes narrow, and there is a drawback that the resolution of the image display means cannot be effectively utilized.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for displaying a drawing screen in a graphic input device, which eliminates the drawbacks of the conventional example and makes effective use of the resolution of the image display means.

"Configuration of the Invention" (Means for Solving Problems) FIG. 1 is a functional block diagram showing the configuration of the present invention, and the drawing screen display method in the graphic input device according to the present invention is as follows:
Image memory 1 and frame for graphic display.

In a graphic input device comprising an image synthesizing means 3 for synthesizing the outputs of an image memory 2 for displaying images, an image display means 4, and a one-position input means 5, the screen display of a graphic display, one graphic display, and a command display are combined. The problem is solved by switching the composite screen display according to the value indicated by the position input means 5.

(effect) The operation of the present invention will be explained using FIG.

Based on the value indicated by the position input means 5 such as a mouse or digitizer, the comparison means 6 determines whether the value indicates the drawing area on the display screen of the image display means 4.

When in the drawing area, only image memory 1 for displaying figures is 1
When outside the 0 drawing area selected by the image synthesizing means 3 and making the entire display screen of the image display means 4 capable of drawing and displaying, the outputs of the image memory 1 for displaying figures and the memory 2 for displaying commands are The images are synthesized by the image synthesizing means 3 and displayed on a synthesized screen.

In this way, based on the value indicated by the one-position input means 5, the display screen of the one-image display means 4 can be switched between a graphic display screen display and a composite screen display of a graphic display and a command display.

(Embodiment) An embodiment of a drawing screen display method in a graphic input device according to the present invention will be described based on FIGS. 1 to 3.

FIG. 1 is a machine block diagram showing the configuration of the present invention, and FIGS. 2 (1), (2), and (3) are front views of the display screen for explaining the display state of the screen display means 3, respectively. ,
FIG. 3 is a flowchart for explaining the operation of the above embodiment.

In the figure, 1 is an image memory for displaying figures, 2 is an image memory for displaying commands, 3 is image synthesis means, 4 is image display means, and 5 is position input means.

Reference numeral 6 denotes a comparison means, which judges whether or not the X coordinate value among the x-y coordinate values indicated by the position input means 5 exceeds the maximum value Xmax by comparing it with a preset reference value. . That is, the output of the position input means 5 is r X <
If X wax J, it is within the drawing area, and rX>Xm
If it is ax J, it will be outside the drawing area. Therefore, the comparing means 6 is configured to judge which of the above two states the output of the 1-position input means 5 is in, and to select the input of the image synthesizing means 3 based on the judgment result. .

Next, the operation of the above embodiment will be explained based on the flowchart shown in FIG. Note that this subroutine is called from the main routine when a drawing position and a command are specified when creating a figure.

First, use Pl to input the X and Y signals from the digitizer of the position input means 5.
Read coordinate values. Next, it is checked at P2 whether the input pen has been pressed. If it is not pressed, use rNOJ to go to P3 via route R1. In this P3, check whether the X coordinate value, especially among the X and Y coordinate values read in advance with Pl, exceeds the maximum value Xrsax. judge whether

If it exceeds the maximum value Xtsax, use rYEsJ to
4, and if it is not exceeded, select "NO" and go to route R2.
Go through to P5.

As mentioned above, when it is determined in P3 that the value exceeds the maximum value , the image display means 4 displays as shown in FIG. 2 (2), that is, the X-Y coordinate value (0
, 0) to (Xp.

O) to (Xmax
, O) is the command display screen.

On the other hand, when it is determined in P3 that the maximum value Perform display. In other words, the (
The entire display screen from (Xmaz, 0) to (Xmaz, 0) is a graphic screen.

After switching between P4 and P5 based on the determination result of P3, cursor C is displayed at P6. Thereafter, the process returns to PL and roughly checks whether the input pen was pressed in P2. When a menu on the command display screen or a desired position on the drawing screen is pressed with the input pen, the process goes to P7, reads the X-Y coordinate values from the digitizer, and then returns to the main routine.

"Effects of the Invention" According to the drawing screen display method provided in the graphic input device according to the present invention, based on the value indicated by the position input means, the display screen of the image display means is divided into a screen display of a graphic display and a screen display of a graphic display. Since the display can be switched between the command display and the composite screen display, even if an inexpensive image display means with relatively low resolution is used, the entire viewing area of the image composition means can be used effectively when on the drawing screen. , it is possible to create a wide drawing screen, which is extremely effective in practical use.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing an embodiment of the drawing screen display method in the graphic input device of the present invention, and FIG. 2 (1), (
2) and (3) are front views showing the display screen of the screen display means, and FIG. 3 is a flowchart. 1: Image memory for displaying figures 2: Image memory for displaying commands 3: Image composition means 4: Image display means 5: Position input means 6: Comparison means −'=゛Figure 1 Figure 2

Claims (2)

[Claims] (1) A graphic input device comprising an image compositing means for synthesizing the outputs of an image memory for displaying a figure and an image memory for displaying a command, an image display means, and a position input means, the screen displaying the figure; A drawing screen display method in a graphic input device, characterized in that a graphic display and a composite screen display of a command display are switched according to a value indicated by the position input means. (2) When the value indicated by the position input means indicates X>Xmax (where X is a horizontal coordinate value), it is now possible to switch from the graphic display screen display to a composite screen display of the graphic display and command display. A drawing screen display method in a graphic input device according to claim 1, characterized in that: