JPS6327919A - Documentation device - Google Patents

Abstract

PURPOSE:To inhibit the input of unprintable characters and symbols in the English input mode by converting an input key to the key code only when this key code corresponds to a printable character or symbol. CONSTITUTION:In the English input mode, an input mode flag register MFR 15a in a RAM 15 is set to '1' to indicate the English input mode. When a character key or the like is inputted on a keyboard 12, this input is inputted to a CPU 11 as a matrix code of the operated key through a keyboard interface 13. The CPU 11 judges whether the input mode is set to the Japanese input mode or not and whether contents of the input MFR 15a are '0' or not. In this case, it is discriminated that the input mode is not the Japanese input mode and contents of the input MFR 15a are not '0', and it is judged whether the matrix code of the inputted key exists in an English conversion table 14b is a ROM 14 or not, If it is judged that this matrix code does not exist in the table 14b, the character or the symbol corresponding to the operated key is regarded as unprintable in the English input mode, and this key input is ignored to wait for the key input again.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a document creation device capable of selecting a Japanese text input mode and an English text input mode, and a selection of a Japanese text printing mode and an English text printing mode.

(Prior art) In conventional word processors that switch between Japanese input mode and English input mode, a conversion table that generates a key code corresponding to the key matrix code of an input key is shared and used in both input modes. Therefore, the keys that can be entered in both input modes are the same.

(Problem to be solved by the invention) However, the above conversion table has a special feature that can be printed when printing a document created in Japanese input mode, but cannot be printed when printing a document created in English input mode. Characters and symbols, such as “≦” “≧J rXJ
"r÷", "～", etc. are registered. Although these character symbols can be entered and displayed on the 1 display when creating text in English input mode, they are not printed when printing, and that part is treated as blank. .

Therefore, the displayed and printed results do not match. In order to avoid such a situation, there is an inconvenience in that the user must memorize characters and symbols that cannot be printed in advance.

The present invention has been made in view of the above-mentioned circumstances, and provides a document creation device that has both Japanese and English input modes and is capable of prohibiting the input of unprintable characters and symbols in the English input mode. The purpose is to provide.

[Structure of the Invention] (Means and Effects for Solving the Problems) The present invention has separate conversion tables for Japanese input mode and English input mode, and performs conversion according to each input mode. By using a table, the key code corresponding to the input key matrix code is converted into a key code only when the key code is a printable character symbol.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows its circuit configuration, and 11 is a CPU. This CPU 11 receives key operation signals from a keyboard 12 equipped with keys such as character keys, a Japanese input mode set key, an English input mode set key, etc. through a keyboard interface (rK I/FJ in the figure) 13.
Input via .

The CPU 11 controls operations according to key operation signals from the keyboard 12, and also controls the ROM 14 and RA.
It is connected to M15 and inputs and outputs data with these.

An input mode flag register 15a for storing the state of the input mode is leaked into the RAM 15.

The following FIG. 2 shows the detailed structure of the ROM 14. As shown in the figure, inside the ROM 14, there is a Japanese text conversion table 14a that converts the matrix code of the input key into the corresponding key code in the Japanese input mode, and a conversion table 14a for converting the matrix code of the input key into the corresponding key code in the English input mode. An English conversion table 14b for converting into codes is provided.

Next, the operation of the above embodiment will be explained using FIG. 3.

In the Japanese text input mode, the input mode flag register 15a in the RAM 15 is "0" indicating the Japanese text input mode.
It becomes. At this point, as shown in step S01 in FIG. 3, when a key input is performed using a character key or the like to input a document from the keyboard 12, the key input is converted into a matrix code of the key operated via the keyboard interface 13. It is input to CP tJ 11. C.P.L.
In J11, as shown in step 302, it is determined whether the input mode is the Japanese input mode, that is, whether the content of the input mode flag register 15a is "0".Here, the determination result is YES; Next step S
Proceed to O3. Then, in step 303, the ROM
The input matrix code is converted into a key code using the Japanese conversion table 14a in 14. This completes this process and returns to the key input standby state.
The converted key code is sent to the next stage processing circuit.

On the other hand, in the English text input mode, the input mode flag register 15a in the RAM 15 is set to °°1'' indicating the English text input mode.At this point, step S in FIG.
As shown in O1, when key input is performed using character keys or the like to input a document from the keyboard 12, the key input is inputted to the CPU 11 via the keyboard interface 13 as a matrix code of the operated key. C
In P U 11, as shown in step 802, it is determined whether the input mode is the Japanese input mode, that is, whether the content of the input mode flag register 15a is "0". In this case, the determination result is No, and the process proceeds to step 804. In step 804, it is further determined whether the matrix code of the input key exists in the English conversion table 14b in the ROM 14. If it is determined that a matrix code exists, then the process proceeds to step SO5, and the inputted matrix food is converted into a key code using this English conversion table 14b. With this, this process is completed and the key input standby state is entered again, and the converted key code is sent to the next stage processing circuit.

Furthermore, if it is determined in step SO4 that the matrix code of the input key does not exist in the English text conversion table 14b, this means that the characters or symbols of the operated key cannot be printed in the English text input mode. , this key input is ignored and the state returns to the key input park ownership state of step 301 described above.

[Effects of the Invention] As detailed above, according to the present invention, in a document creation device having both Japanese and English input modes, a conversion table for the Japanese input mode and a conversion table for the English input mode are provided separately. By using a conversion table according to each input mode, the key code is converted to the key code only when the key code corresponding to the input key matrix code is a printable character symbol. Therefore, it is possible to provide a document creation device that can prohibit the input of unprintable characters and symbols in the English text input mode.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a block diagram showing the circuit configuration, FIG. 2 is a diagram showing the configuration inside the ROM, and FIG. 3 is a flowchart showing the processing contents for key input. . 11...CPU, 12...Keyboard, 13...
Keyboard interface, 14...ROM, 14a
... Conversion table for Japanese text, 14b... Conversion table for English text, 15... RAM, 15a... Input mode flag register. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 1 M14a 14b Figure 2 Figure 3

Claims (1)

[Claims] In a document creation device capable of selecting a Japanese text input mode and an English text input mode and a selection of a Japanese text print mode and an English text print mode, a key corresponding to a key matrix code of a printable character in the English text print mode is provided. A document creation device characterized by comprising an English conversion table in which a code is set and which generates only a key code corresponding to a matrix code of a printable key input in an English input mode.