JPS5876883A - Picture display - 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 The present invention relates to an image display device capable of controlling displayed colors.

With the increase in speed and capacity of computers and advances in information processing technology, especially image processing technology, it has become possible to process complex information or create images of complex and sophisticated information. In order to convey information appropriately, a single-screen i# display device is required to have a variety of complex auxiliary display functions. Among these, a method of blinking a specific part of a displayed image repeatedly is widely used.

No. 1- shows a configuration diagram of a conventional example of an image display device equipped with a link function. In the figure, 8 bits are provided corresponding to each full-screen purple color constituting the display surface of the CRT.
A pattern memory, 2F!, stores an 8-bit code that specifies the color signal to be displayed on each pixel corresponding to the image to be displayed on the pixel. The color signals corresponding to the 8-bit code stored in pattern memory 1 are divided into red (R), green (G), and blue (B).
) is a table that stores each minute as 8-bit data,
Bff for each output of R, G, and B of 3Fi table 2
i, and the output of the provisional NAND circuit.

AND[! I! Circuit, 4IfiAND
A D/A conversion circuit that converts the 8-bit data of 9R, G, and H sent through circuit 2' into analog 11 and supplies it to the CRT, corresponding to each of all the th elements that make up the display screen of the 5riCRT. 1 bit is provided for each bit, and 1f
A control memory that stores pixels corresponding to the plink pattern of the iI image, and 6 a NAN that obtains the negation of the output of the control memory 5 and the blink signal S.
This is the D circuit.

With this configuration, when the pulling signal S is "0", the color signal corresponding to the code recorded in the pattern memory IIC is selected from the table 2 and displayed on each pixel of the CRT, thereby displaying the image. It is carried out.

When the blink signal S is "1", the pixels designated by the control memory 5 of the image displayed on the CRT are not displayed. In this way, a blinking display is performed. Note that the contents of pattern memory 1 and control memory 5 can be arbitrarily rewritten by signals P and C sent from a host computer (not shown), respectively.

In the conventional example, the control memory 5 is used as the main wall to store pixels corresponding to the blinking pattern, and the storage capacity of the control memory 5 is 1. For example, one tree constituting the display ItI of a CRT is 1024×10.
24, this and 1 ttl number, or 1 Mbit, are required. Further, the blinking performed in the conventional example involves blinking, that is, displaying and non-displaying, a portion of 11111 pixels of the display image, and therefore it is difficult to distinguish between non-display pixels due to blinking and pixels that were originally non-display.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an image display device having a blink function that eliminates the above-mentioned drawbacks, does not require a control memory, is therefore inexpensive, and has a capacity for identifying blink patterns. .

In other words, in the present invention, an image to be displayed on a CRTVC is stored in a pattern for each element using a code.
A memory, a plurality of tables for storing color signals corresponding to the codes, and a selector for selecting outputs of the plurality of tables in response to a blink signal, among the color signals stored in the tables.

The correspondence to some of the conids differs depending on the table.

Hereinafter, the gist of the present invention will be specifically explained using two examples shown in Figure 2. In FIG. 2, 1 and 4 are the pattern memories explained in FIG.
The color signal corresponding to the 8-bit code stored in pattern memory 1 is divided into red (R), red (G), and blue (B), and each is stored as 8-bit data.・Outputs a color signal according to the code sent from memory l #, 1
The 2tlt pattern memory IKI stores color signals corresponding to 8-bit codes, some of which are different from those in the first table 2a, such as red (R) and green (G).

It is divided into blue (B) and stored as 8-bit data each.

3I is the first table 2, which is a general 2 table that outputs a color signal according to the code sent from pattern memory 1.
a and the color signal tube receiver of the second table 2b, when the blink signal S is "0", Fi outputs the color signal of the first table 2a, and when the blink signal S is "11", the color signal of the second table 2b is output. This is a selector that outputs a color signal.

With the above configuration, the blink signal S is rOJ1
2) And! , the color signals stored in the gloss 1 table 2a corresponding to the codes stored in the pattern memory 1 are displayed on each pixel of the CRT. Further, when the blink signal S is "1", the color signal stored in the second table 2bK corresponding to the code stored in the pattern memory 1 is displayed on the CRT.

Among the codes stored in the pattern memory L, color information that is different from the first table is stored in the second table for the code corresponding to the @ element to be blinked. If you do so, the blink signal St” rlJ
By doing so, different colors can be displayed for the pixels targeted for blinking.

As explained above, according to the present invention, the control
It is inexpensive as it does not require memory f).

In addition, since the blink signal displays a predetermined arbitrary color for the pixel targeted for blinking, the blinking
It is possible to obtain an ifj1m display device whose pattern is easy to identify.

[Brief explanation of drawings]

FIG. 1 shows a conventional example of a pixel display device, and FIG. 2 shows a configuration diagram of an embodiment of the present invention. In these figures, ] is a pattern order memory, 2a\if4! J] table, 2b is the second
In the table, 3' is a selector. Q-(J(1)

Claims (1)

[Claims] A pattern memory is provided corresponding to each pixel constituting the display surface of the CR and T, and stores a code specifying a color signal to be displayed on each pixel, and a pattern memory stores a color signal corresponding to the code. An image display device comprising: a plurality of tables with different color signals corresponding to some codes; and a selector that selects the outputs of the plurality of tables according to an external signal.