JPS62286092A - Graphic display indication system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] This invention relates to a graphics display display method that expresses emphasis attributes of image information when displaying image information on a display device. .

[Conventional technology]

When displaying image information such as graph ink or graphics on a display device, the emphasis attribute of the image information is expressed by blinking.

FIG. 5 is a block diagram of a conventional graphic display device of this kind. In the figure, 1 is a linear generator for generating color codes, and 2a and 2b are for alternately writing the color codes output from the linear generator 1. 3 is a video interface that alternately inputs the color code written into the two frame buffers 2a and 2b and converted into image information for display; 4 is a display that displays image information 5 is a first switching device for switching and writing the color code output from the linear generator 1 into two frame buffers 2a and 2b; 6 is a first switching device for switching and writing the color code output from the linear generator 1; This is a second switching device for switching between the frame buffers 2a and 2b and outputting a color code to the video interface 3.

Here, the two frame buffers 2a and 2b are exchanged, and while one is a jump buffer for display, the other is a frame buffer for updating.

Next, the operation will be explained.

Now, assuming that 2a is a display frame buffer and 2b is an update frame buffer, the color code output from the linear generator 1 is switched to the update frame buffer 21 by the first switching device 5. frame buffer 21) for writing and display during this writing operation.
The color code written in is outputted to the video interface 3 by switching by the second switching device 6, and the image information corresponding to the color code written in the frame buffer 2b for display on the display device 4 is subjected to luminance conversion. Photographed.

By the way, when image information has an emphasis attribute, when displaying the image information on the display device 4 to express this emphasis attribute, the portion of the image information having the emphasis attribute is blinked.

FIG. 6 shows an example in which one bit of the frame buffer is used as an emphasis attribute flag when writing a color code to the update frame buffer 2b in order to express image information with an emphasis attribute.

In this way, when one bit of the frame buffer, for example, the upper one bit, is used as the emphasis attribute flag, the color code output from the linear generator 1 and the upper bit 1 are logically ORed to update the frame buffer 2b. write to.

When the update frame buffer 2b becomes a display frame buffer, the emphasis attribute is expressed by ignoring the color code whose emphasis attribute flag is 1 when the blinking cycle is reduced.

7 and 8 show the blinking of image information expressing emphasized attributes, and the image information shown in FIG. 7 and the image information shown in FIG. 8 are alternately displayed on the display device 4. That is, if the circle model 9 is image information with an emphasis attribute and the triangle model 10 is image information with an emphasis attribute, then the seventh
As a result of the image information shown in the figure and FIG. 8 being alternately displayed on the display device 4, the circle model 9 becomes blinking, and it is determined that the circle model 9 in this blinking state has an emphasis attribute. can be judged.

[Problem that the invention seeks to solve]

However, in the conventional graphic display device, when model 9 out of models 9 and 10 is blinked as image information having an emphasis attribute, model 1
There was a problem that the hidden surface/hidden line processing parts of 0 were missing, resulting in an unnatural model being displayed.

This invention was made in order to solve the problem mentioned in -1-, and when blinking is performed as an emphasis attribute, the model with the emphasis attribute prevents the hidden model from being missing even when it disappears. The purpose is to display the model without any problems.

[Failure to solve the problem]

Therefore, the graphic display device according to the invention has two frame buffers 2a.

2b are a plurality of buffer units 21a and 22a, respectively.

21b and 22b, and when writing image information into the plurality of buffer sections 21a, 22a, 21b, 22b and displaying it on the display device 4, the respective buffer sections 21a, 22
By alternately switching and outputting the image information written in a, 21b, and 22b, image information including an emphasis attribute and image information not including an emphasis attribute are alternately displayed on the display device 4. It is characterized by:

[Effect]

Two frame buffers 2a, 2b in this invention
are a plurality of buffer units 21a and 22a.

21b and 22b, and image information is stored in multiple buffers y.
21a, 22a, 21b, and 22b.

And a frame buffer 2a for display.

When outputting image information to the display device 4 as 2b, two or more buffer units 21a, 22a, 21b.

By alternately switching and outputting the image information written in 22b, image information including the emphasis attribute and image information not including the emphasis attribute are alternately displayed on the display device 4.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a graphic display device used in the present invention. In the figure, 21a and 22a are a plurality of buffer sections forming a frame buffer 2a'k 48, and 21b and 22b are a plurality of buffer sections forming a frame buffer 2b. Buffer section 7; third switching device for switching between buffer sections 21a and 22a; 8 buffer section 21b;

22b.

It should be noted that the same components as those in the prior art are given the same numbers and their explanations will be omitted.

Next, the operation will be explained.

Now, assuming that 2a is a display frame buffer and 2b is an update frame buffer, the color code as image information output from the linear generator 1 is transferred to the first switching device 5.
During this writing operation, the color code written in the display frame buffer 2b is output to the video interface 3 by switching by the second switching device 6, and the color code is output to the video interface 3 by switching by the second switching device 6. Frame buffer 2b for display on device 4
The image information corresponding to the color code written in the image is displayed after the brightness is converted.

At this time, the color code is written into the update frame buffer 2b as follows.

That is, the image information consisting of the model 9 having the emphasis attribute and the model 10 not having the emphasis attribute shown in FIG. 2 is written into the buffer section 21b as image information including the emphasis attribute, and
The model 9 that does not have an emphasis attribute is written into the buffer section 22b as image information that does not include an emphasis attribute.

This writing is performed alternately by switching the switching device 8 shown in FIG.

Then, when the update frame buffer 2b becomes the display frame buffer, the third switching device 7 switches the update frame buffer 2b to the buffer section 21b.

The image information written in 22b is output alternately. As a result, the image information shown in FIGS. 2M and 3 is alternately outputted to the display device 4, and the model 10 is displayed without being missing.

In the above embodiment, when image information is written to a plurality of buffer sections, image information including an emphasis attribute and image information not including an emphasis attribute are distinguished and written to the buffer sections. When image information is written to a plurality of buffer sections as shown in FIG. and image information that does not include the emphasis attribute.

That is, when the flag detection means 9 detects a flag, it is preferable to obtain image information that does not include the emphasized attribute by ignoring the color code.

〔Effect of the invention〕

As explained above, in the present invention, each of the display frame buffer and the update frame buffer is configured with a plurality of buffer sections, and when image information is written into the plurality of buffer sections and displayed on a display device, the display frame buffer and the update frame buffer are each configured with a plurality of buffer sections. By switching the written image information alternately, the image information that includes the emphasized attribute and the image information that does not include the emphasized attribute are displayed alternately, so even when the number of blinks decreases, the display is not hidden by the model in question. It is also possible to update the screen at high speed at the same time.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a graphic display device according to the present invention, FIGS. 2 and 3 are diagrams showing image information written on the sofa section according to the present invention, and FIG. 4 is a diagram showing another embodiment of the present invention. FIG. 5 is a configuration diagram of a conventional graphic display device; FIG. 6 is a diagram for explaining image information written to a conventional frame buffer; FIG.
8 are diagrams showing examples of image information displayed on a conventional display device. 1...Line line generator, 2a, 2b...Fure, A Huff 77.21a, 22a, 21b. 22b...Buffer unit, 3...Video interface, 4...Display device. Agent Masuo Oiwa (2 people) Figure 2 Figure 3 Figure 7 @Figure 8 Procedure amendment (Volunteer 1. Indication of incident Patent Application No. 129897/1989 2)
Name of the invention Graphic display display method 3, Representative of the person making the amendment Moriya Shiki 5, Claims to be amended, Detailed description of the invention, Brief description of the drawings. 6. Contents of amendment (1) The scope of claims will be amended as shown in the attached sheet. (2) Lines 11 and 14 of page 4 of the specification, lines 20 of page 8 to lines 1 and 4 of page 9 [frame buffer 2bJ] [frame buffer 2aj] and correct it. (3) On page 6, line 8 of the same book, the phrase “hidden surface/hidden line” is replaced with “
It overlaps with Model 9.'' (4) In the 10th line of page 8 of the same book, "8 buffer section" is corrected to "8 buffer section." (5) In the same book, page 9, lines 12 and 13, the phrase "does not have an emphasis attribute" is corrected to "has an emphasis attribute." (6) In the same book, page 9, line 15, "switching device 8" is corrected to "switching device 7." (7) In the same book, page 9, lines 18 to 19, "third switching device 7" is corrected to "fourth switching device 8." (8) In the same book, page 11, line 14, the phrase ``show examples'' is amended to read ``show examples.'' Above 2, claims (112)
When writing wo alternately and projecting image information on the display device,
In the graphic display method, the image information written in the frame buffer of 2111 is alternately switched and output, and the discrimination between image information having an emphasis attribute and image information not having an emphasis attribute is expressed by blinking. Each frame buffer is composed of a plurality of buffer sections, image information is written to the plurality of buffer sections, and when displaying on a display device, the image information written to each buffer section is alternately switched and output, thereby enhancing the image quality. A graphic display method characterized in that image information including attributes and image information not including emphasized attributes are alternately displayed on a display device. (2) When writing image information to multiple buffer units, distinguish between image information that includes an emphasis attribute and image information that does not include an emphasis attribute, and write it to each buffer unit, and when displaying it on a display device, each buffer = 1 - The graphic according to claim 1, wherein image information including the highlighted attribute and image information not including the emphasized attribute written in the section are alternately outputted and displayed on a display device. Display display method. (3) When writing image information to multiple buffer sections, the image information is written to each buffer section along with a flag indicating that it has an emphasis attribute, and based on the detection of the flag, the image information including the emphasis attribute and the emphasis attribute are included. 2. A graphic display system according to claim 1, wherein the graphic display system is configured to alternately output and display on a display device image information that does not exist.

Claims (3)

[Claims] (1) When image information is written alternately in two frame buffers and the image information is displayed on a display device, the image information written in the two frame buffers is alternately switched and output to create an image with an emphasis attribute. In a graphic display display method that expresses identification of information and image information not having an emphasis attribute by blinking, each of the two frame buffers is configured with a plurality of buffer sections, image information is written to the plurality of buffer sections, By alternately switching and outputting the image information written in each buffer section when displaying on the display device, image information including the emphasized attribute and image information not including the emphasized attribute are alternately displayed on the display device. A graphic display method characterized by: (2) When writing image information to multiple buffer sections, image information that includes an emphasis attribute and image information that does not include an emphasis attribute are distinguished and written to each buffer section, and when displayed on a display device, they are written to each buffer section. A graphic display method according to claim 1, characterized in that image information including written highlighted attributes and image information not including highlighted attributes are alternately output and displayed on a display device. . (3) When writing image information to multiple buffer sections, the image information is written to each buffer section along with a circle indicating that it has an emphasis attribute, and based on the detection of the flag, the image information including the emphasis attribute and the emphasis attribute are included. 2. The graphic display system according to claim 1, wherein the graphic display system is configured to alternately output and display on a display device image information that does not exist.