JPS587180A - 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 The present invention relates to a display device that improves the efficiency of coordinate input by generating a fixed oral pattern as required on a gray display screen and combining it with a desired character pattern.

When performing computer graphics processing in a conversational manner,
Various methods have been proposed and used as the input means. For example, coordinates can be input manually using a tablet, joystick, or light ben, or by command. Particularly commonly used are one-coordinate manual input methods using commands and input methods using a light pen. The display screen of the conventional device M cannot be manually operated. Since there is no guide for the coordinates above, it is difficult to determine the intended coordinate position with one hand. Therefore, a method has been considered in which a predetermined verbal response pattern is generated and used as a guide for coordinates, and such a pattern has conventionally been obtained in the following manner. That is, a plurality of refresh memories are used, square patterns are stored in seven refresh memories, and the contents of the refresh memories are alternately selected and displayed to generate an apparent square pattern. However, with this conventional method, a square pattern refresh memory for seven screens is required, and the memory efficiency is poor and the inexpensive CRT is used.
Not suitable for display devices.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a display device that can generate a uniformly regular pattern that serves as a guide for human coordinates with a minimum amount of memory.

Another object of the present invention is to provide a display device in which generated squares can be erased as necessary without affecting other displayed figures.

The present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a display device according to the present invention, and a character CRT display device will be described below. In FIG. 1, MPU is a microprocessor, and various control signals,
Data signals and address signals are sent to various devices at predetermined timings to control the various devices. Normal character printing is C
Under the control of the RT controller CRTC, the multiplexer MPX/2 is driven to convert a desired character code from among the character codes in the refresh memory RM into a character pattern using the character generator CG, and further, the parallel-to-serial converter PSC/ converts a desired character code into a character pattern. The character pattern of the parallel signal is converted into the character pattern of the serial signal, and the serial signal regarding the character pattern is supplied to the display CRT via the game controller OG and the image controller VC for display.

The PCG is a regular pattern generator that can repeatedly output a regular regular pattern, and the pattern generator PCG stores in advance a regular regular pattern to be synthesized with a character pattern. P.S.
C2 is a parallel-to-serial converter, and pattern generator PC
The regular pattern parallel signal output from G is converted into a serial signal and output to AND gate AG. FF is a flip-flop, and under the control of an external switch or microprocessor MPU, it is used only when a uniform regular pattern is first synthesized on the display CRT.
/''. Therefore, when the output of the flip-flop FF is /'', the pattern generator P
The square regular pattern obtained by CG can be extracted as an AND output. Also, OR is an or gate,
Parallel-to-serial converter PSC/and Antogame) Synthesizes the serial signals of characters and fixed-form patterns respectively output from AG, and displays the character pattern and the first uniform fixed-form pattern on the display CRT via the image control unit VC. Display the composite screen.

In this way, the present invention eliminates the need to store a grid pattern in one of a plurality of refresh memories and alternately select and display the contents of the refresh memories, as in the past, and instead uses a regular pattern generator. Since a regular pattern can be obtained as desired, memory capacity is reduced.

Furthermore, by setting the output of the flip-flop FF to O'', the standard pattern can be erased as desired regardless of the character pattern being displayed.Furthermore, information about the standard pattern can be stored in the random access memory (j) For example, you can display squares of different sizes.

As explained above, according to the present invention, a uniformly regular pattern can be displayed on a CRT screen as needed, and information about the uniformly regular pattern can be stored using the minimum required memory capacity. Since the data can be stored in the memory, memory can be used efficiently.

Furthermore, according to Fubatsu 1 Town, if information about fixed patterns is stored in a random access memory, it becomes possible to store various different patterns. It is possible to obtain 1 iL.

It goes without saying that the present invention can be easily applied to a graphic CRT display device by using a graph ink generator instead of a character generator.

Further, although the present invention has been explained above using the case of a CRT display device as an example, the present invention is not limited to only a CRT display device (6), but also a display device using a liquid crystal display or a plasma display. , effective when applied to various general display devices.
It is something.

[Brief explanation of drawings]

FIG. 7 is a block diagram showing an example of the configuration of a display device according to the present invention. MPU...-microprocessor, BL...pass line, CRTC...CRT controller, MPX/, , 2...multiplexer, RM...
・Refresh memory, CG...Character generator, PSC/,
, 2...parallel-serial converter, VC...image control unit,
CRT-Display, PCG...Pattern generator, AC...And gate, FF...Flip float, OR...Or gate. (7)

Claims (1)

[Scope of Claims] 1) A display device configured to display characters, etc. on a display surface by generating a character pattern, etc. using a character generator, comprising a pattern generator that generates a predetermined regular pattern, A display device characterized in that a character pattern or the like can be synthesized with the fixed pattern and displayed on the display surface. 2. A display device according to claim 7, further comprising pattern generation/erasing means for generating/erasing the regular pattern as required.