JPH01231089A - Document producing device - Google Patents

Abstract

PURPOSE:To display a character without performing a bit shifting operation by preparing two pieces of bit patterns for odd digit and even digit previously constituted by bit shifting to one character and judging whether the displaying position of a character to be displayed is an odd digit or even digit. CONSTITUTION:A display 18 which displays a character pattern in a prescribed bit size and a storing means 14 for storing two pieces of character patterns for odd digit and even digit previously constituted by bit shifting so that the pattern can have bit size which is integer times as large as the bit number accessible by a microprocessor 10 by one time are provided. In addition, the judging means 10 which judges whether the displaying position of a character to be displayed is an odd digit or even digit and a display controlling means 19 which causes the display 18 to selectively display two pieces of character patterns in accordance with the judged result of the judging means 10 are also provided. Since either one of the two character patterns can be displayed selectively depending upon the digit, whether an odd digit or even digit, of the displaying position of a character, the character can be displayed without shifting the character patterns at the time of display.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a document creation device having a character display function that displays characters on a screen according to input data under the control of a microprocessor.

(Prior Art) Generally, in a document creation device having a character display function, a character code is manually input by an operator's key operation. Then, the character pattern corresponding to the character code is read out from the storage section and displayed on the screen of the display section. In this case, if the bit size of the character pattern displayed on the display differs from the number of bits that can be accessed by the microprocessor at one time, it is necessary to perform a bit shift of the character pattern when displaying the character pattern. Become.

For example, if the size of the character pattern displayed on the display is 1
If a character is displayed in 2 bits, or 12x12 dots, and the microprocessor is 8 bits, then 4
It is necessary to bit-shift the character pattern by the number of bits. This bit shift processing needs to be performed every time a character pattern is displayed, since the direction of the shift differs depending on whether the character pattern is displayed in odd-numbered digits or even-numbered digits of the display section.

(Problems to be Solved by the Invention) This invention was made in view of the above-mentioned circumstances. Conventionally, when displaying characters, character patterns had to be bit-shifted due to differences in display position, which made the process complicated. It is an object of the present invention to provide a document creation device capable of improving the above points, displaying characters without bit shifting, and displaying characters with simple processing.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a document creation device that has a character display function that displays characters according to input data on a screen under the control of a microprocessor. a display device for displaying a pattern; and a character pattern for odd-numbered digits for one character, which is configured by being bit-shifted in advance so as to have a bit size that is an integral multiple of the number of bits that the microprocessor can access at one time. A storage means for storing two values for even number digits, a determination means for determining whether the display position of the character to be displayed is an odd number digit or an even number digit, and a determination means for storing two characters for the two characters according to the determination result of the snake determination means. The apparatus is characterized by comprising display control means for selectively displaying a pattern on the display.

(Function) In the document creation device having the above configuration, two character patterns are prepared for one character, one for odd number digits and one for even number digits, which are configured by bit shifting in advance, and the display of the character is Since either of the two character patterns can be selected and displayed depending on whether the position is an odd number digit or an even number digit, it is possible to display the character pattern without shifting it at the time of display.

(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the basic configuration of a document creation device according to an embodiment of the present invention. In Figure 1, 1
0 is a microprocessor (CPU), 11 is RA to 1.12 is a ROM accessed by the microprocessor IO.

A microprocessor (hereinafter referred to as CPU) 10 controls the entire device, and controls the RAM 11 and ROM described above.
12 and starts a program according to manual instructions to execute document creation processing, external character creation processing, display control processing as shown in FIG. 2, and the like. RAM II consists of areas for storing various control information such as a document area, a line image area (print buffer), a non-character registration area, a word/phrase registration area, and a cursor position register for storing the cursor position on the document display screen. The ROM 12 includes a program area 13 that stores a program that determines the operation of the CPU10 and an input processing program including a control routine as shown in FIG. Character pattern area 1 that stores the character pattern of
4. It has a dictionary area 15 in which various dictionaries for converting readings input in kana or Roman characters into kanji are registered.

Also, 16 is a keyboard (KB), 18 is a display, 2i is a floppy disk device (FDD), and 23 is a printer (
PRT). The keyboard (KB) 1B uses a keyboard interface (KB) to input information necessary for document creation, etc.
B-IF) 17 to the CPU to. In addition to character keys, cursor keys, etc., this keyboard 16 includes a half-width specification key that switches the cursor range from full-width to half-width, and a "hiragana" shift key and a "katakana" shift key that switch the cursor range from half-width to full-width. , "Kanji" shift key, etc. are provided. The display 18 is comprised of, for example, a 10-line liquid crystal display device. The display controller (display-CNT) 19 controls the display of the display 18 using the display dot memory 20 under the control of the CPU10. The floppy disk device 21 stores created documents and stores external characters, second level characters, etc. under the control of the CPU 10 via a disk interface (FDD-IF) 22. The printer 23 prints a created document or character information read into the main body from the floppy disk device 21 through a printer interface (PRT-IF) 24 under the control of the CPU 10.

This invention enables characters to be displayed on the display 18 without performing a character pattern shift operation, and the second
The details of the display control will be explained below with reference to the figures and FIG.

FIG. 2 is a flowchart illustrating the control of character display. When displaying a character, the CPU 10 first determines whether the display position of the character is an odd number digit (
Step AI). If the display position is an even number digit, R
For example, a character pattern for even number digits as shown in FIG. (Step A2). Furthermore, when the display position is an odd number digit, a character pattern for even number digits as shown in FIG. It is written into the display dot memory 20 under the control of the controller 19 (step A3). In this case, these character patterns are displayed on the screen in an OR-RITE display in which the character patterns are combined and overwritten.

The pattern shown in FIG. 3(a) is a hatching pattern corresponding to even numbered digits, and FIG. 3(b) shows a hatching pattern corresponding to odd numbered digits. For these patterns, the number of bits that CPU10 can access at one time is 8 bits, and the size of the displayed character pattern is 12 bits.
This is an example of 12 bits of X12 dots.

As can be seen from FIGS. 3(a) and 3(b), the pattern for even number digits has a pattern size of 12×16 dots, which is the original character pattern of 12×12 dots shifted to the right, and 16 bits. Similarly, the pattern for odd digits is
The original character pattern of 12x12 dots is left-aligned to 12x16 dots, resulting in a 16-bit pattern size. This 16-bit pattern size is CP
This is twice the number of bits that can be accessed by Ul0 at one time, ie, 8 bits.

For example, when the first digit of the display unit 18 displays the hiragana "a" and the second digit "i", these two
When performing shading display for one character, the pattern shown in Figure 3(b) is used for the odd numbered digits where "A" is displayed, and the pattern shown in Figure 3(b) is used for the even numbered digits where "I" is displayed. Figure 3 (a
) pattern is used. The display state when hatching is performed in this manner is shown in FIG. 3(c).

As described above, in the present invention, even if the number of bits that can be accessed by the CPU at one time and the size of the displayed character pattern are different, character display can be performed without performing pattern shift processing.

In addition, here we have explained the character patterns to be prepared using hatching display as an example, but by preparing two character patterns for ordinary characters, one for odd number digits and one for even number digits, it is possible to create characters that do not require shift processing. Display can be performed.

[Effects of the Invention] As described above, according to the present invention, characters can be displayed without bit shifting, and characters can be displayed with simple processing.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a document creation device according to an embodiment of the present invention, FIG. 2 is a flowchart illustrating the display control system of this document creation device, and FIG. FIG. 3 is a diagram for explaining character patterns. 10...Microprocessor (CPU), 11...
RAM, 12... ROM, 13... Program area, 14... Character pattern area, ■5... Dictionary area,
16... Keyboard (KB), 17... Keyboard interface (KB-IF), 1g... Display device, 19... Display controller (display-CNT), 2
0... Display dot memory, 21... Floppy disk device (FDD), 22... Disk interface (FDD-IF), 23... Printer (PRT)
, 24...Printer interface (PRT-IF
). Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2 (Q) (b) Figure 3 Figure 3

Claims (1)

[Claims] A document creation device having a character display function that displays characters according to input data on a screen under the control of a microprocessor, comprising: a display that displays a character pattern in a predetermined bit size; Storage means that stores two character patterns for one character, one for odd-numbered digits and one for even-numbered digits, which are configured by bit-shifting in advance so that the bit size is an integral multiple of the number of bits that can be accessed at one time. a determining means for determining whether the display position of the character to be displayed is an odd number digit or an even number digit; and a display for selectively displaying the two character patterns on the display according to the determination result of the determining means. A document creation device comprising a control means.