JPH06266340A - Character display device - Google Patents

Abstract

PURPOSE:To display many kind of reduced characters without causing the increase of memory capacity. CONSTITUTION:This character display device consists of a memory 12 storing data, generated by adding specific use labels to font data corresponding to respective strokes constituting characters, character by character, a keyboard 2 which generates a character select signal for selecting a desired character and a reduction level signal determining the scale of the character, a CPU 11 which selects only font data given the use level corresponding to the reduction level, compresses and converts the selected font data according to the reduction level, and outputs the data, and a display panel 3 which displays the character according to the converted font data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character display device, and more particularly to a character display device which does not cause so-called character collapse when displaying reduced characters.

[0002]

2. Description of the Related Art In the character display of a personal computer or a word processor, it is necessary to appropriately change the size of the character for display (including printing), and the amount of display information increases as compared with the size of the display screen. Therefore, it is necessary to use reduced characters in several stages according to the displayed contents.

When displaying reduced characters, in order to save the memory capacity for storing font data, the font data stored in advance corresponding to each character of regular size is compressed.

[0004]

By the way, there are dot fonts and vector fonts as font data,
In the latter, the displayed characters are smooth, so high-speed C
Although it is being used more and more with the spread of PU, when a character having a large number of strokes is reduced and displayed using a vector font, a part of the character may be crushed by the above conventional method. For example, in the case of displaying the character "邊" as shown in FIG. 5, the data compression causes crushing at the portion A in the drawing.

To avoid this, preparing font data for all the reduced characters is not a good idea because it causes an increase in memory capacity as described above.

An object of the present invention is to solve such a problem, and an object thereof is to provide a character display device capable of displaying various reduced characters without increasing the memory capacity.

[0007]

According to the present invention, when visually recognizing a reduced character, it is not necessary to display all the images constituting the character, and an appropriate image is omitted to leave a characteristic image. However, it was made in view of the finding that good recognition is possible.

The configuration will be described with reference to FIG. 4. Font data storage means for storing, for each character, font data corresponding to each image forming a character with a predetermined usage level, and a predetermined character. A signal generating means for generating a character selection signal for selecting a character and a scale level signal for determining the scale of the character; and a font data of a predetermined character corresponding to the character selection signal, with a usage level corresponding to the scale level. It is provided with a data converting means for selecting only the selected font data, compressing and converting the selected font data according to the scale level, and outputting it, and a character displaying means for displaying characters according to the converted font data.

[0009]

In the above structure, only font data having a predetermined usage level is selected from the font data in accordance with the scale level signal, so that only the characteristic image of the reduced character is displayed. Character display with good visibility without crushing is performed.

Further, since it is sufficient to store regular characters as font data, there is no problem of increasing memory capacity.

[0011]

EXAMPLE FIG. 1 shows a hardware configuration of a character display device,
The processing circuit 1 includes a keyboard 2 and a display panel 3 connected to the processing circuit 1. The processing circuit is a central processing unit (CPU)
The keyboard 2 is connected to the input interface 13 and the display panel 3 is connected to the output interface 14, respectively.

A code signal for selecting a character and a scale signal for the character are output from the keyboard 2 by pressing a predetermined key, and input to the CPU 11 via the interface 13. Further, the memory 12 stores data in vector fonts for all images forming each character, and each font data is provided with a predetermined usage level.

For example, to describe the character "Ben" shown in FIG. 3A, the font data corresponding to the image shown by the broken line in FIG. 3B is given level 2 and is shown by the other solid lines. Level 1 is attached to the font data corresponding to the image.

FIG. 4 shows a processing flow chart of the CPU 11. In step 101, a character code signal and a character scale signal are input from the keyboard, and subsequently, a font corresponding to the entire image of the character designated by the character code is input. The data is read from the memory 12 (step 102).

In step 103, the display level is determined according to the character scale reduction signal. To explain this using the characters shown in FIG. 3, there are two kinds of character scale reduction signals, for example, "1" and "1".
/ 3 ". The display level is the character scale prepared in advance −
It is determined by referring to the display level correspondence table, and the scale signal "1" and the scale signal "1/3" are displayed at the display level 2,
It corresponds to display level 1.

At step 104, the font data to be displayed is determined. To explain this again in the case of FIG. 3,
When the display level 2 corresponding to the reduced scale "1" is selected, the font data corresponding to all the images of level 1 shown by the solid line and level 2 shown by the broken line in FIG. That is, if it is not a reduced character, all the images are displayed.

On the other hand, when the display level 1 corresponding to the scale "1/3" is selected, the font data corresponding to the level 2 image indicated by the broken line is not selected, and the level 2 image is displayed. It is erased ((3) in the figure). That is, in the case of a reduced character, the image of the broken line is not displayed.

Subsequently, in step 105, the font data is compressed based on the scale, and in step 106, the compressed and converted font data is output to the display panel 3. As a result, as shown in FIG. 3D, the display panel 3 displays a character reduced to 1/3 of the normal character. As you can see from the figure, by removing the image of level 2,
The problem that a part of the character is crushed as in the conventional case (see FIG. 5) does not occur, and only the characteristic image is displayed and the character display with good visibility is performed.

In the above embodiment, the character image is provided with two levels, but the present invention is not limited to this, and three or more levels corresponding to the character scale type are provided, and the selected display level is provided. By deleting and displaying an image with a higher level, it is possible to display a reduced character with good visibility and without character collapse.

The selection of the character type and scale is not required to be performed by the keyboard, but may be another program processed by the CPU 11.

[0021]

As described above, according to the character display device of the present invention, it is possible to favorably carry out reduced character display without collapse in a vector font without increasing the memory capacity for storing font data.

[Brief description of drawings]

FIG. 1 is a hardware configuration diagram of a character display device.

FIG. 2 is a processing flowchart of a CPU.

FIG. 3 is a diagram showing a process of displaying characters.

FIG. 4 is a claim correspondence diagram.

FIG. 5 is a diagram showing a conventional reduced character display.

[Explanation of symbols]

 1 processing circuit 11 CPU (data conversion means) 12 memory (font data storage means) 2 keyboard (signal generation means) 3 display panel (character display means)

Claims (1)

[Claims] 1. A font data storage means for storing, for each character, font data corresponding to each image forming a character and having a predetermined usage level, a character selection signal for selecting a predetermined character, and From the signal generating means for generating the scale level signal for determining the scale of the character and the font data of the predetermined character corresponding to the character selection signal, only the font data having the use level corresponding to the scale level is selected. And a character display device that includes a data conversion unit that compresses and converts the selected font data according to the scale level and outputs the data, and a character display unit that displays characters according to the converted font data.