JPH0550008B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field] The present invention relates to a character processing device capable of inputting in a plurality of shift modes.

[Prior art]

Conventionally, in character processing devices that can input in multiple shift modes, for example, in character processing devices that can input hiragana and katakana, the same key is used for characters with the same reading as hiragana and katakana. When entering hiragana or kana-kana, it is necessary to operate the shift key in advance to change the character type to hiragana or katakana. As a result, when creating a document containing a mixture of hiragana and katakana, you have to use the shift key frequently, and if you forget to use the shift key or make a mistake, you have to re-enter the correct character type. There was a drawback that it had to be done.

〔the purpose〕

SUMMARY OF THE INVENTION An object of the present invention is to provide a character processing device that can convert shift modes for designated characters among character information input in a plurality of shift modes. In addition, another object of the present invention is to
When correcting characters entered with the wrong shift mode, after entering a string in a certain soft mode,
The purpose is to reduce the labor of the operator when converting the shift mode for necessary characters.

〔explanation〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

First, the concept of the present invention is shown in FIG. For example, if we consider the case where there are hiragana and katakana as shift modes, it is a system that converts characters specified by a position indicating means such as a cursor that indicates the position of a character string input by a character input means into hiragana or katakana. It is.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. KB is a keyboard that can be used to write strings, symbols, numbers,
Then, cursor movement information, shift mode conversion information, etc. are input. The CPU is a central processing unit that performs various calculations, judgments, and controls. The ROM is a read-only memory, and stores programs for control procedures shown in the flowcharts of FIGS. 5, 6a, and 6b, as well as other control programs. RAM is random access memory. Among them, CBUF is a character buffer that stores character information entered from the keyboard KB. Further, CREG is a cursor register, which indicates an address in the character buffer CBUF by interlocking the cursor, and whose value is changed by using the cursor movement keys described later. CG is a character generator that stores fonts that correspond to codes for each character, symbol, etc. DP is a display device that visually displays input characters, cursor, etc.
DPC is a display controller and performs display DP control. BL is a bus line that connects each of the above devices and transmits information. FIG. 3 is a schematic diagram of the key tops of the keyboard KB. this house
KB7 is a group of kana symbol keys, in addition to letters "," and "."
This is a group of keys for inputting symbols such as. KB1 and KB2 are cursor movement keys, KB1 is to the left,
Move KB2 to the right. KB3 and KB4 are shift mode conversion keys, KB3 to hiragana, KB4
is converted to katakana. Details will be described later. KB5,
KB6 is a shift mode designation key; KB5 designates the shift mode to hiragana, and KB6 designates the shift mode to katakana. When entering characters, first select the shift mode using the specified key, KB5, or
After specifying the shift mode in KB6, press the kana and symbol keys.

The operation of one embodiment of the present invention under the above configuration will be explained with reference to the display example in FIG. 4, the flowcharts in FIGS. 5, 6a, and 6b, and the character code correspondence diagram in FIG. I will explain while referring to it.

When the character processing apparatus of the present invention is powered on, it remains in a state of waiting for key input in step S1 of FIG. If any key is input there, step S2
The key is determined in step S3 and step S3.
Branches to step S4, step S5, and step S6.

Step when kana/symbol key is pressed
Proceed to S3. In step S3, the code of the input character key is stored in the address specified by the cursor register CREG of the character buffer CBUF in the random access memory RAM, and the cursor register is
Add 1 to CREG. After that, the character
The contents of CBUF and cursor register CREG are transferred to character generator CG and display controller DPC.
Display on the display device DP via. When the cursor movement key KB1 or KB2 is pressed, the process advances to step S4, where the contents of the cursor register CREG are subtracted or added, and then displayed on the display DP.

When the hiragana conversion key or katakana conversion key is pressed, step S5 or step S6 respectively.
Proceed to. Detailed flowcharts of step S5 and step S6 are shown in FIGS. 6a and 6b. In step S5, first, step S5.1 determines whether the character on the cursor is a kana or not, and if it is not a kana, the process goes to step S5.3.
After passing through S5.2, proceed to step S5.3. Step S5.2 sets the first bit of the character code to 0.

The character code will be explained here. What is shown in FIG. 7 is an example of a character code correspondence table. The character codes here are all binary 8-bits, and the hiragana characters are in the order of "a", "i", "u", etc., and the code value increases by one from "00000001". On the other hand, katakana character codes have a format in which the most significant bit of the corresponding hiragana character code is set to 1, and hiragana and katakana are clearly distinguished depending on whether this most significant bit is 1 or 0. It is.

Since the code system is as described above, the steps
It was converted to hiragana in S5.2.

Thereafter, in step S5.3, 1 is added to the cursor register CREG, and the result is displayed in step S5.4. Now, if the character on the cursor is a kana, it becomes a hiragana code, the hiragana is displayed, and the cursor moves one digit to the right.

Figure 6b is the reverse of hiragana conversion, and step S6.2
This means that the first bit of the character code is set to 1.

For example, suppose that the character key and cursor movement key described above are used to input "Amerikajin" as shown in FIG. 4A, and the cursor is brought to the beginning of the sentence. If you want to convert the word "Amerika" into katakana, press the katakana conversion key KB4 on the keyboard shown in Figure 3. Then, the process branches to step S6 in the flowchart of FIG. step
At S6.1, the character "A" on the cursor is determined to be a kana, and the process proceeds to step S6.2. step
In S6.2, by setting 1 to the first bit of the character code of "a", it is converted to the character code of "a". After such processing, the step
Proceeding to S6.3, the cursor register CREG is incremented by 1 and the cursor is advanced by one digit and displayed in step S6.4. As a result, "a" becomes "a" as shown in FIG. 4b, and the cursor is placed under "me". After this process is completed, repeat the steps.
Return to S1.

On the other hand, when you want to convert "ji" to "ji" as shown in Fig. 4c, by operating the hiragana change key KB3 in Fig. 3, proceed to step S5 and proceed to the flowchart shown in Fig. 6a. Through the same process as shown in FIG. 4b, "ji" is converted to "ji" and the cursor advances by one, as shown in FIG. 4a.

[Other Examples]

In addition, the display device DP in the above-mentioned embodiments may be a liquid crystal display, CRT, etc., as long as it displays visually.
It doesn't matter which one. Furthermore, although the character code is 8 binary bits per character, the present invention will not be impaired even if the character code is 16 bits. Furthermore, although the difference in the code between hiragana and katakana is based on the ON/OFF of the most significant bit, it is of course possible to make the difference in other formats.

In addition, in the embodiment of the present invention, the shift mode is hiragana and katakana, but in addition, uppercase and lowercase letters of the alphabet, and ``;'' and ``'' given to one key, such as key 7a, are also used as shift modes. It is clear that the present invention is also applicable to symbols. Furthermore, the present invention can of course be applied even when the shift mode is not designated at the time of input, the desired keys are individually present, and there is no shift mode designation key.

〔effect〕

As explained above, according to the present invention, characters once input and displayed in one input mode can be converted into characters in another input mode with an extremely simple device configuration and simple operation. effective.

This also makes it easier to correct characters if you make a mistake in the input mode. Furthermore, for example, when inputting a character string containing a mixture of hiragana and katakana, you can input the entire character string in one input mode. Since it is possible to input data using ``Click here'' and then convert only the necessary parts later, it has the effect of reducing input operation effort and input time.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the concept of the present invention. Figure 2 shows
FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. Third
The figure is a schematic diagram of the key tops of the keyboard. FIG. 4 is a diagram showing a display example. Figure 5 is a flowchart of main control. FIG. 6a is a flowchart of hiragana conversion processing. FIG. 6b is a flowchart of katakana conversion processing. FIG. 7 is a character code correspondence diagram. CBUF...Character buffer, CREG...Cursor register, KB1...Cursor left movement key, KB
2... Cursor right movement key, KB3... Hiragana conversion key, KB4... Katakana conversion key.

Claims (1)

[Scope of Claims] 1. Selection means for selecting one input mode from the first and second input modes; Input means for inputting characters based on the input mode selected by the selection means; a storage means for storing a character code string corresponding to a character string input by the input means; and a character code string inputted by the same input operation on the input means in each of the first and second input modes. The character patterns are made to correspond to character codes in which the first value and the second value are different only in the value of a predetermined bit part, and the other parts are the same. a character pattern storage means stored in correspondence with a character code; and a first display control means that refers to the character pattern storage means to display a character pattern string corresponding to the character code string stored in the storage means. and specifying means for specifying a desired character pattern in the character pattern string displayed by the first display control means, and inputting the characters input in the first input mode in a second input mode. a conversion instruction means for instructing conversion into a character that is input in the first input mode;
When the conversion instruction means is instructed, the value of the predetermined bit portion of the character code stored in the storage means corresponding to the specified character pattern is changed from the first value to the second value. a second display control that refers to the character pattern storage means and displays a character pattern corresponding to the character code obtained by conversion by the conversion means in place of the designated character pattern; A character processing device comprising: means. 2. The second display control means displays a character pattern in place of the designated character pattern, and the designation means designates the next character pattern adjacent to the designated character pattern. and a control means for controlling, in response to sequential conversion instructions by the conversion instruction means, in place of the character pattern string of the character string input in the first input mode, the same input operation is performed in the second input mode. 2. The character processing device according to claim 1, wherein character pattern strings corresponding to input character strings are sequentially displayed.