JPS60222892A - Character 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 Field of the Invention The present invention relates to a character display device for converting character codes of so-called microcomputers into display characters and displaying the converted characters.

Background technology and one point in between When displaying character output from a microcomputer on a display, the character code from the computer is generally converted into a character signal displayed in °C by a character generator, and this converted signal is displayed. The data is stored in a desired address of a random access memory for output, and each address of this memory is read out in an order related to scanning of the display for display.

Here, in the case of displaying 80 horizontal characters, for example, columns "0" to "79" are set in the horizontal direction, and characters are displayed in each column.

In this kind of display, some display characters are displayed horizontally by 2
It was requested that the image be enlarged twice.

That is, in FIG. 2, the displayed characters "A", "B", and "C" are enlarged twice in the horizontal direction. It is formed by writing to each two addresses of the random access memory.Therefore, on the display, the enlarged display character will be displayed using two columns.

However, in this case, the strict column "7" on the display
When the enlarged display character is set to "9", only half of the character is written to the random access memory (911 on the left), and the character with the right half missing is displayed as shown in the figure. become. Such an incomplete display
This is extremely inconvenient to use.

OBJECTS OF THE INVENTION In view of these points, it is an object of the present invention to provide an excellent display with a simple configuration.

Summary of the Invention The present invention provides a character display device capable of displaying normal display characters and enlarged display characters that are enlarged twice in only the horizontal direction, when the enlarged display characters are specified, the display position of the enlarged display characters is adjusted. This is a character display device in which it is determined whether or not the column is the last column, and when the column is the last column, the display position is moved to the first column of the next line, which has a simple configuration. Good display can be achieved with

Embodiment In FIG. 1, a character code I/O from a microcomputer (1) is supplied to a character generator (2) and converted into a display character signal. This signal is supplied to a random access memory (3) for display.

Further, an address signal from the microcomputer (1) is supplied to the random access memory (3). An address signal from the Sarani microcomputer (1) is supplied to a decoder (4), and the display position on the display is detected. And column “7” from this decoder (4)
A signal indicating "9" is supplied to the microcomputer (1).

Furthermore, a signal related to scanning from the display (5) is supplied to the random access memory (3), and a signal read out by this signal is supplied to the display (5) for display.

Furthermore, FIG. 3 shows a flowchart of a program built into the microcomputer (1). The operation starts when a new character is designated to be displayed in the diagram.

First, it is determined in step [1] whether or not the display is enlarged, and if not, normal characters are written in step [2], and the address for one column is moved in step [3]. operation is stopped.

On the other hand, if the display is enlarged in step [1], it is determined in step [4] whether the column is "79" or not. If the answer is NO, the enlarged characters are written in step [5], the address is moved by two columns in step [6], and the operation is stopped.

On the other hand, if the column is "79" in step [4], the address is moved to the beginning of the next line in step [7], and thereafter the enlarged characters are written in steps (5) and [6], and 2 The address is moved by columns and the operation is stopped.

According to the above-mentioned device, when the enlarged display finger is attached to the last column, this =i is changed to the next one as shown in Figure 4. This is done by moving to the beginning of the line, so there is no chance of an incomplete shosho with a part missing.

Effects of the Invention According to the present invention, it has become possible to perform good display with a simple configuration.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an example of the present invention, FIG. 2 is a diagram for explaining a conventional device, and FIGS. 3 and 4 are diagrams for explaining the present invention. (1) is a microcomputer, (2) is a character generator, +3) is a random access memory L (4)
is a decoder, and (5) is a display. ℃hi【ノ' Figure 1 4 Figure 2 Figure 3 Figure 9

Claims (1)

[Claims] In a character display device capable of displaying normal display characters and enlarged display characters that are enlarged twice in the horizontal direction, when the above enlarged display character car is specified, whether or not the display position is the last column. (f) A character display device in which the display position is moved to the first column of the next line when the car is identified and the character is in the last column.