JPS5991489A - Display unit - 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] Industrial Field of Application The present invention relates to a display device for displaying pictures, figures, characters, etc., and in particular, the present invention relates to a display device for displaying pictures, figures, characters, etc. The present invention provides a device that displays images in a superimposed manner on top of each other to improve visibility.

An example of a conventional color image display device is shown in FIG. 1 and will be described in detail. FIG. 1a shows a simplified configuration of a display device, and FIG. 1b shows an example of the configuration of its display plane. In FIG. 1d, the image pattern data written in the display memory 1 is read out at a predetermined timing, parallel-to-parallel converted by the shift register 2, and colored by the color encoder 3 according to the output bit pattern. It is output and displayed on CRT4. This is a configuration commonly used in the Rusk scan method.

The figure shows examples of images and annotations written in each plane of the display memory 1. The solid line part is the actually written pattern, and the broken line part is shown to show how two planes are overlapped. If the display memo 'J#1. If #2 is assigned to red and yellow, respectively, the apple and its shape will be displayed in red, and the orange and its shape will be displayed in yellow. There are two issues here:

(1) When there is a large amount of annotations, it is necessary to be careful about the arrangement so that the annotations do not overlap with each other, and even if it is possible to write all the annotations on the screen, the amount of annotations is too large. Visibility is required.

(2) When it becomes necessary to modify a part of the created image, the annotation also needs to be changed (shifted position, etc.) as the figure is changed, making the correction complicated.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a display device that can eliminate such conventional drawbacks and facilitate writing and editing of annotations.

Structure of the Invention In the display device of the present invention, a part of the display memory plane is made independent as a sub-plane, all or part of the other memory plane is used as a main plane, and output is generated by a combination of the main planes. It is configured to give a color or gradation to the sub-plane according to the content of the color or gradation image to be displayed, and to display it superimposed on the output of the main plane, thereby making the image and the annotation independent. This makes it possible to make corrections independently when corrections occur.
Additionally, it is possible to display annotations by genre.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

FIG. 2 shows the configuration of a display device in an embodiment of the present invention. In FIG. 2, 5 is a display memory plane, 6 is a sub-plane with a part thereof made independent, 7 is a main plane made up of the remaining part, 8 is a shift register,
9-digit color encoder, 10 CRT display, 1
1 is a central processing unit (CPU), 12 is a random access memory (RAM) as a central storage device, 13 is an external storage device, and 14 is an input device.

The operation of the display device having the above configuration will be described below. First, following the instructions from the input device 14, the CPU 11 reads data from the external storage device 13, transfers the image data to the main plane 7 of the display memory plane 5, and transfers the annotation data to the temporary RAM.
Write to 12.

The annotation data read into the RAM 12 is divided by genre, and a pre-fixed genre or a genre designated by the input device 14 is selected and written to the subplane 6.

Data written in the main plane 7 and the subplane 6 is read out periodically, converted into parallel and serial data by a shift register 8, and inputted to a color encoder 9. The color encoder 9 colors the image according to the bit pattern output from the shift register 8, and displays the image on the CRT display 1.
Output to 0. This color encoder 9 is a general color look-up table composed of RAM,
It can be set in advance by the CPU 11. At this time, if a specific color is specified for the output data from the subplane 6, the color of the annotation can be changed arbitrarily. Selective display of images and annotations can be realized by changing the color designations of the other 70 main planes according to the color designation of the annotation.

FIG. 3 shows an example of a display screen in this embodiment. In (a), plane #1 of the main plane 7 of the display memory 5. #2 has the shapes of an apple and a mandarin orange written on it, respectively, and the annotation "apple" is written on the subplane 6.

Now, if we change the color lookup table to display only plane #1 of main plane 7 and subplane 6, and mask plane #2, the example screen shown in (b) is
The screen shown in -1 is displayed.

Here, the screen is switched according to a request from the input device 14. Erase the contents of subplane 6 and add another annotation "
At the same time, display plain #2,
If plane #1 is masked, screen b-2 will be displayed. By switching in the same manner, image b-3 is obtained.

The above is just one display example, and it can be easily inferred that many other combinations can be realized.

In the above embodiment, the color encoder 9 is a color look-up table, but it can easily be constructed from a latch circuit and a logic circuit.

Further, in the above embodiment, a color display device has been described, but it can easily be implemented in a monochromatic multi-gradation display device, as well as a display device having both color and multi-gradation display devices.

Effects of the Invention As described above, according to the present invention, by having a subplane for annotations independent of the display memory group for pictures, figures, etc., annotations can be selectively displayed in accordance with the display of pictures, figures, etc. (
It is possible to obtain visual effects such as displaying images by genre (display by genre) or emphasizing only specified figures or annotations while lowering the brightness of other images (enhancing display).

[Brief explanation of the drawing]

FIG. 1 is a block diagram and memory plane diagram showing the configuration of a conventional display device, FIG. 2 is a block diagram showing the configuration of a display device in an embodiment of the present invention, and FIG. 3 is a memory plane diagram and memory plane diagram of the same device. It is a display screen figure. 5... Display memory, 6... Sub plane, 7... Main plane, 8... Shift register, 9... Color encoder, 10・
...CRT display, 11...CP
U, 12...RA, M, 13...External storage device, 14...Input device.
Name of the first agent: Patent attorney Toshio Nakao and 1 other person1
Figure (a) (b) Figure 2// /Z Ij /4-(
b)

Claims (4)

[Claims] (1) A part of the plurality of built-in display memory planes for displaying images such as pictures, figures, characters, etc. is made independent and becomes a subplane, and all or part of the other memory planes is made the main plane, and The color or gradation of the image output from the sub-planes is given to the output signal of the sub-plane according to the output signal, which changes the color or gradation of the image output by the combination of the main planes. A display device characterized by displaying an image by superimposing outputs of subplanes. (2) Corresponding to the main plane which is color-coded or gradated by genre, the same genres are given the same color or gradation to the sub-planes and displayed superimposed on the main plane. A display device according to claim (1). (3) A patent claim in which only images related to a specific single or multiple genres are emphasized, and images related to other genres are made the same as the background color or have their brightness lowered, based on an external instruction etc. A display device according to scope item (2). (4) An external storage device that stores images, an input device that transmits instructions from a human, and an input device that interprets the input from the input device, reads image data from the external storage device, transfers it to a display device, or specifies it. Claim (2) comprising: a central processing unit for selecting data relating to a genre and transferring it to a display plane; and a central storage unit for the data transfer and as a buffer for selective transfer.
Display device as described in section.