JPS60107696A - Display unit having attribute control function - 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 a display device having an attribute control function suitable for use in office computers, personal computers, word processors, workstations, etc. By simply using a circuit, it is possible to display characters, symbols, etc. in multiple fonts that you want to emphasize, and also to easily change the type of 71-rebut, so that the operator can obtain a display that is easy to read. The present invention relates to a display device.

BACKGROUND OF THE INVENTION Conventionally, in display devices such as office computers, display devices having a control function for displaying underlines and ruled lines in 7 tributes, so-called attribute 1, have been used.

By the way, the conventional attribute 1 to control is
This is done using a crude random logic that combines I and MSI ICs.

Therefore, the objects of attribute control are limited to underlines, ruled lines, etc., and for characters and symbols, so-called attribute display is performed by adding a dotted frame surrounding the characters, diagonal lines, or other patterns to the background. I couldn't.

That is, in order to display characters, symbols, etc. with a dotted frame or background pattern added to them, it is necessary to store all data of the display pattern in the character generator. As a result, a character generator with a large capacity must be used, resulting in a significant increase in cost.

Therefore, with a display device equipped with a conventional attribute control circuit, even if you want to emphasize and display characters, symbols, etc. at a specific position, it is not possible to display attributes by adding diagonal lines to a dotted line frame or background. There was an inconvenience.

Purpose Therefore, the display device having the attribute control function of the present invention solves these inconveniences in conventional display devices, and allows multi-font display of characters, symbols, etc. to be emphasized by simply adding a circuit with a simple configuration. In addition to making it possible to easily change the type of pattern etc. added to characters etc. as an attribute as necessary, it is possible to obtain a diverse and easy-to-read AI-review 1-display. , the purpose is to improve operational efficiency.

Kazu-Issei.

For this purpose, in the display device having the attribute control function of the present invention, a composite screen is created using the memory for attribute 1 which stores patterns in 71 to review 1, the output from the character generator, and the output from the attribute memory. A synthesis circuit is provided, and the attribute 1 pattern read from the attribute 1 memory is synthesized with the data from the character generator on the screen, so that multiphono 1 display of characters, symbols, etc. can be performed.

Next, embodiments of a display device having a control function for Attribute 1 of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a functional block diagram showing an embodiment of a display device of the present invention. In the drawing, 1 is a refresh memory, 2 is a character generator, 3 is an attribute memory, 4 is a refresh latch circuit 71 to 71, 5 is a synthesis circuit, 6 is a shift register, 7 is an attribute control circuit, and 8 is a CRT unit.

In the circuit shown in FIG. 1 showing a display device having an attribute control circuit according to the present invention, an attribute memory 3 is provided and a synthesis circuit 5 is added accordingly, but apart from this point, it is different from the conventional display device. The same is true.

First, parts common to a conventional display device having a seven-trite control function will be explained.

The display data stored in the refresh memory 1 is read out for display under the control of a CPU (not shown) or the like. The read display data is applied to a character generator 2 in which pattern data forming a character is stored.

Therefore, parallel pattern data is output from the character generator 2 and input to the shift register 6.

By driving this shift register 6 with a shift clock, parallel input data is converted into serial output data. The converted serial display data is given to the CRT unit 8 via the attribute control circuit 7 and displayed on the screen of the CRT.

In this case, when displaying an attribute such as an underline or a ruled line, for example, when displaying it in reverse or blinking, the data instructing the attribute is transferred from refresh memory 1 to attribute 1 - launch in accordance with the display data. applied to circuit 4.

The attribute 1-data latched in the attribute latch circuit 4 is given from the latch circuit 4 to 71 to the rebuild control circuit 7 at the timing when the display data is output from the shift register 6 to the attribute control circuit 7. , the display data is controlled by this 71-review data.

For example, in the case of inversion display control, the display data is inverted by the attribute control circuit 7 supplied with attribute data instructing the inversion, and the inverted display data is output to the CRT unit 1-8.

Also, when the display is blinking, control circuit 7 is sent to attribute 1.
As a result, the display data output from the shift register 6 is inhibited at a fixed periodic timing, and the CR
It is displayed blinking on the T screen.

Next, the operations of the attribute memory 3 and the synthesis circuit 5 added in the display device having a control function for the attribute 1 of the present invention will be explained.

FIG. 2 is a display example for explaining the operation of creating a composite screen by the display device of the present invention. ■ to ■ in the drawings indicate the output of the character generator 2, the output of the attribute memory 3, and the output of the synthesis circuit 5, respectively.

Character generator 2 has 1 as in the conventional case.
For example, character pattern data of the alphabetic character rAJ, such as ■ in FIG. 2, is stored.

Further, the attribute memory 3 stores attribute pattern data as shown in (■) in FIG.

The pattern data in the attribute memory 3 is read out using attribute data added to the display data stored in the refresh memory 1. This point is basically the same as the attribute data in the case of conventional 71-review control. However, in the display device of the present invention, in order to read the data stored in the attribute memory 3, one to several bits of data are additionally used.

With such data, character generator 2
The pattern output shown in (2) in FIG. 2 read from the attribute memory 3 and the attribute pattern output shown in (2) in FIG.

Then, in the synthesis circuit 5, pattern data such as ■ and ■ in FIG. 2 are synthesized, and a pattern with attributes as shown in ■ in FIG. 2 is generated.

In this way, when displaying the composite pattern output from the composition circuit 5, if you wish to perform attribute control such as inverted display or blinking display, the attribute data for this purpose is latched in the attribute latch circuit 4. , this latch data may be given to the attribute control circuit 7 for control.

FIGS. 3(1) to 3(4) show display examples of attribute patterns suitable for use in the display device having the attribute control function of the present invention.

The patterns shown in FIG. 3 are just a few examples of 71 tributes, and it is clear that any other various patterns can be used as the background for characters to be displayed with emphasis.

If more than ten types of attribute patterns are stored in the attribute memory 3, each address can be specified using 4-bit data.

As explained in detail above, in the display device having the 71-review control function of the present invention, the 71-review 1
- An attribute memory for storing patterns and a composition circuit for creating a composite screen based on the output from the character generator and the output from the attribute memory are provided, and the attribute 1 read from the attribute memory is provided.
- By compositing patterns with data from a character generator on the screen, characters, symbols, etc. can be displayed in multiple fonts.

Effects Therefore, according to the display device having the attribute control function of the present invention, the display device having the attribute control function can be used simply by adding attribute 1 to memory storing required types of attribute patterns and a synthesis circuit for synthesizing with a character pattern. It becomes possible to display characters, symbols, etc. to be emphasized in multiple fonts, and the types of patterns added to characters etc. as attributes can be easily changed as needed.

Therefore, the operator can arbitrarily select a variety of easy-to-read attribute displays for characters, symbols, etc., and operational efficiency is significantly improved.

Furthermore, since the configuration of the circuit required for this purpose is extremely simple, many excellent effects can be obtained, such as being advantageous in terms of cost.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing an embodiment of the display device of the present invention, FIG. 2 is a display example for explaining the operation of creating a composite screen by the display device of the present invention, and FIGS. 4
) shows a display example of the 71-review pattern suitable for use in the display device having the attribute control function of the present invention. In the drawing, 1 is a refresh memory, 2 is a character generator, 3 is an attribute memory, 4 is an attribute latch circuit, 5 is a synthesis circuit, 6 is a shift register, 7 is an attribute control circuit, and 8 is a CRT unit. ■ ■ Fragment 2 (1) (3) Monument 3 (2) (4) Figure

Claims (1)

[Claims] 71-Review 1 In a display device having a control function,
71. A display device comprising: an attribute memory in which a revised pattern is stored; and a composition circuit that creates a composite screen based on outputs from a character generator and outputs from the attribute memory.