JPH0414167A - Roman character/kana conversion system - Google Patents

Abstract

PURPOSE:To ensure the free movement of a cursor on the basis of KANA (Japanese syllabary) characters by controlling the cursor position so as to secure the correspondence to a character except a head character based on such a rule that secures the correspondence to the next head character. CONSTITUTION:An attribute flag is stored in a Roman character string attribute buffer 110 to show whether each character of an unconverted character string is identical with a head character or not. Meanwhile an attribute flag is also stored in a KANA character string attribute buffer 107 to show each character of a converted character string is identical with a head character or not. A Roman character/KANA conversion control part 103 prepares such a rule that can secure the correspondence between a cursor and the next head character on an unconverted character string stored in a Roman character string buffer 109 for the characters except the head ones. Thus the control is carried out so that the correspondence is secured between the cursor position on a converted character string stored in a KANA character string buffer 106 and the cursor position on the converted character string stored in the buffer 109. As a result, a cursor can be freely moved for each character on the converted character string of the buffer 106.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a Romaji-kana conversion method, and in particular to a method for inputting a Romaji character string, converting it into a Kana character string, and converting the converted Kana character string back into a Romaji character string. Concerning the Romaji-Kana conversion method that can be used.

[Conventional technology]

As is well known, the Romaji-Kana conversion method is a technique used when inputting characters into computers, word processors, etc., and involves inputting the Romaji that represents the pronunciation of the character you want to input to alpha on the keyboard using a combination of keys, etc. This is a method of inputting kana characters corresponding to romaji. Since there are more kana characters, which are Japanese phonetic characters, than alphahets, it is widely used as an effective means of inputting Japanese sounds.

The conventional Romaji-Kana conversion method is equipped with a Kana character string buffer, and moves the cursor to any position in the Romaji-Kana conversion result string accumulated on the Kana string buffer to convert the Romaji-Kana conversion result string. It often includes a function that allows you to edit the . In other words, it is possible to move the cursor and delete the character strings before and after the cursor, or to input further information at the cursor position.

In addition, the conventional Romaji-kana conversion method is basically based on the alpha het key on the keyboard, so
When inputting Nodo to Alpha, it is now possible to input in Romaji-Kana conversion mode without changing the input mode, and convert the string resulting from Romaji-Kana conversion back to the Romaji string before Romaji-Kana conversion. There are also methods.

By the way, the conventional Romaji-Kana conversion method, which allows the reverse conversion of the Romaji-Kana conversion result string to the Romaji string before Romaji-Kana conversion, has a Romaji string buffer in addition to the Kana string buffer. Reverse conversion is made possible by replacing the character string resulting from Romaji-Kana conversion stored in the Kana character string buffer with the Romaji character string stored in the Romaji character string buffer before Romaji-Kana conversion. Therefore, it is necessary to make a correspondence between the character string resulting from Romaji-Kana conversion on the Kana character string buffer and the Romaji character string before Romaji-Kana conversion on the Romaji character string buffer.For example, if you enter 'nyu', If you allow the cursor to move to the position of the tsunoise ``yu'' after converting it to ``nyu'', a character will be inserted between J and zuon ryuJ in r, and the character string resulting from Romaji-kana conversion and the character string before Romaji-kana conversion will be inserted. Since it would not be possible to correspond to the Roman character string, there was a restriction that the cursor could not be moved to the position of ``Yuj'' after entering 'n)IuJ and converting it to ``NyuJ''. If you input 'nyu' and move the cursor to the back (to the left) where it has been converted to romaji kana as 'nyuj', the cursor should have moved over the ``yu'' sound based on hiragana, but
The cursor had been moved to the top of "ni".

[Problem to be solved by the invention]

In the conventional Romaji-Kana conversion method, which allows the above-mentioned Romaji-Kana conversion result string to be converted back to the Romaji character string before Romaji-Kana conversion, the cursor is placed over the Romaji-Kana conversion result string in the Kana string buffer. Since certain restrictions were placed on the movement of the cursor when moving, it is not easy to use compared to the conventional Romaji-Kana conversion method, which cannot convert the Romaji-Kana conversion result string back to the Romaji string before Romaji-Kana conversion. This is different, and has the disadvantage that it confuses ordinary users who rarely convert the Romaji-Kana conversion result string back to the Romaji string before Romaji-Kana conversion.

In view of the above-mentioned points, an object of the present invention is to provide a Romaji character string that can return a Romaji-Kana conversion result string on a Romaji-Kana character string buffer to a Romaji character string before Romaji-Kana conversion on a Romaji character string buffer. To provide a Romaji-Kana conversion method which allows the cursor to be freely moved character by character when moving the cursor on a character string resulting from Romaji-Kana conversion in a Kana character string buffer.

[Means to solve the problem]

The romaji-kana conversion method of the present invention stores input romaji in a romaji character string buffer, converts them into romaji and kana, stores the resulting string of romaji-kana conversion in a kana character string buffer, and stores it in the kana character string buffer. You can move the cursor, delete, and insert strings into the resulting Romaji-Kana conversion string, and also transfer the Romaji-Kana conversion result string accumulated in the Kana string buffer to the Romaji-Kana conversion result. In the Romaji-Kana conversion method, which can convert the Romaji-Kana conversion result string into the Romaji character string before Romaji-Kana conversion by replacing it with the Romaji character string stored in the Romaji character string, A Roman character string attribute buffer that stores an attribute flag indicating whether each Roman character in the Roman character string before conversion is the first character of Roman character to Kana conversion, and a Roman character string attribute buffer that is provided corresponding to the above Kana character string buffer to store the Roman character to Kana conversion result. Move the cursor over the Kana string attribute buffer that stores an attribute flag indicating whether each character in the string is the first character of the Roman-to-Kana conversion, and the string that is the result of the Roman-to-Kana conversion of the Kana string buffer. When performing Romaji-kana conversion, for characters such as zuon that are not the first character of Romaji-Kana conversion, a rule is established so that the cursor corresponds to the next first character on the Romaji string before Romaji-Kana conversion in the Romaji string buffer. Romaji-kana conversion that controls the cursor position on the character string of the Roman-ji-Kana conversion result of the Kana character string buffer to uniquely correspond to the cursor position on the Roman character string of the Roman character string buffer before Romaji-Kana conversion. It has a control section.

[Effect]

In the Romaji-Kana conversion method of the present invention, a Romaji character string attribute buffer is provided corresponding to the Romaji character string buffer, and indicates whether each Roman character in the Romaji string before Romaji-Kana conversion is the first character of the Romaji-Kana conversion. A kana string attribute buffer is provided corresponding to the kana string puffer, and stores attribute flags indicating whether each character in the string resulting from Roman-ji-kana conversion is the first character of the Roman-ji-kana conversion. However, when the Romaji-Kana conversion control unit moves the cursor over a string resulting from Romaji-Kana conversion in the Kana string buffer, for characters that are not the first character of the Romaji-Kana conversion, such as A rule is established so that the cursor corresponds to the next first character on the Roman character string before Romaji-Kana conversion, and the cursor position on the string resulting from Romaji-Kana conversion in the Kana string buffer and Romaji in the Romaji character string buffer. Controls so that it uniquely corresponds to the cursor position on the Roman character string before conversion.

〔Example〕

Next, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a Romaji-kana conversion system according to an embodiment of the present invention. The Romaji-kana conversion method of this embodiment includes a Romaji-kana conversion unit 101, a Romaji-kana conversion dictionary 102, and a Romaji-kana conversion control unit 10.
3, a display section 104, a keyboard 105, a kana character string buffer 106, and a kana character string attribute buffer 107.
Its main parts are composed of a Roman character string buffer 109 and a Roman character string buffer 111 consisting of a Roman character string attribute H, 2, IfO.

Referring to FIG. 2, in the kana character string buffer 106,
Strings resulting from Romaji to Kana conversion are accumulated. The kana character string attribute buffer 107 contains the kana character string buffer 106.
An attribute flag indicating whether each character is the first character of the Romaji-Kana conversion corresponding to each character of the string of Romaji-Kana conversion results accumulated in
, "0") is stored when the character is not the first character. The Romaji character string buffer 109 stores Romaji character strings before Romaji-kana conversion. The Roman character string attribute buffer 110 contains the Roman character string H.

An attribute flag indicating whether or not each Roman character is the first character of Roman character to Kana conversion is stored corresponding to each Roman character of the Roman character string before Roman character to Kana conversion stored in the file 109.

In the example shown in Figure 2, most of the characters in the string resulting from Romaji-Kana conversion on the Kana character string buffer 106 were the first characters in the Romaji-Kana conversion. Indicated by attribute flags. However, it has been shown that ``YuJ'' is not the only first character in Romaji-Kana conversion.In general, when inputting Romaji for Romaji-Kana conversion, the number of Romaji characters is greater than the number of Kana characters. Therefore, the attribute flag on the Roman character string attribute buffer 110 indicates that nearly half of the Roman characters stored in the Roman character string buffer 109 are not the first characters when converting Roman characters to Kana. .

The character string as a result of Romaji-kana conversion on the Kana character string buffer 106 and the Romaji character string before Romaji-Kana conversion on the Romaji character string buffer 109 are moved by the cursor pointer C.
PI and CF2 and Roman pointers RPI and R
They are managed by P2 and P2 respectively. The values of the cursor pointers CPI and CF2 and the Romaji pointers RPI and RP2 are changed by the editing function in the Romaji-Kana conversion control unit 103 when the Romaji-Kana conversion is performed.

Referring to FIG. 3, the processing performed by the Romaji-kana conversion control unit 103 when inputting one Romaji character is the Romaji insertion step 3.
01, an attribute flag setting step 302, a cursor pointer advance step 303, a Romaji-kana conversion step 304, a character string replacement step 305, an attribute flag setting step 306, and a Romaji pointer update step 3.7.

Referring to FIG. 4, the process of moving the cursor forward (to the right) by the Romaji-kana conversion control unit 103 includes a cursor position character attribute check step 401, a first character determination step 402, and a cursor pointer forward first character step 403. and a step 404 for moving the cursor pointer forward one step.

Referring to FIG. 5, the process of moving the cursor to the rear (to the left) of the Romaji-kana conversion control unit 103 includes a step 501 for moving the cursor pointer back one step, a step 502 for checking character attributes at the cursor position, and a step 503 for determining the first character. , and step 504 for moving the first character backward from the cursor pointer.

Next, the operation of the Romaji-kana conversion system of this embodiment configured as described above will be explained.

First, when one Roman character is input from the keyboard 105, the Roman-Kana conversion control unit 103 inserts the input Roman character into the cursor position pointed to by the cursor pointer CP2 in the Roman character string buffer 109 (step 301).

Next, the Roman-ji-kana conversion control unit 103 sets an attribute flag "1" indicating that the character is the first character of the Roman-ji-kana conversion at the position pointed to by the cursor pointer CP2 of the Roman character string attribute buffer 110 (step 302).

Subsequently, the Romaji-kana conversion control unit 103 advances the cursor pointer CP2 by one position (step 303).

Next, the Romaji-Kana conversion control unit 103 passes the Romaji character string between the position pointed to by the Romaji pointer RP2 on the Romaji character string buffer 109 and the position pointed to by the cursor pointer CP2 to the Romaji-Kana conversion unit 101, and converts it to Romaji. The conversion unit 101 is activated (step 304).

The Romaji-Kana conversion unit 101 converts the Romaji character string passed from the Romaji-Kana conversion control unit 103 into Romaji-Kana by referring to the Romaji-Kana conversion dictionary 102. here,
The string resulting from Romaji-Kana conversion will either be converted entirely into a Kana string, some parts will be converted into a Kana string and some parts will remain as a Romaji string without being converted, or there will be no conversion at all. All roman strings remain as they are. Thereafter, the Romaji-Kana conversion unit 101 passes the character string resulting from the Romaji-Kana conversion and returns control to the Romaji-Kana conversion control unit 103.

Next, the Romaji-Kana conversion control unit 103 transfers the character string resulting from the Romaji-Kana conversion returned from the Romaji-Kana conversion unit 101 to the Romaji pointer R of the Kana character string buffer 106.
Replace with the Roman character string between the position pointed to by PI and the position pointed to by the cursor pointer CPI. If the number of characters in the Romaji-kana conversion result string to be replaced is different from the number of characters in the Romaji character string to be replaced, the Romaji-Kana conversion control unit 103 further moves the cursor pointer CP1 to the next point at the end of the Romaji-Kana conversion result string. (step 305).

Next, the Romaji-Kana conversion control unit 103 stores the characters of the Romaji-Kana conversion result in the Kana character string attribute buffer 107 and the Romaji character string attribute buffer 1110 corresponding to the Romaji-Kana converted part of the Romaji-Kana conversion result string. An attribute flag "1" representing the first character of Roman-Kana conversion is set corresponding to the first character of the column, and an attribute flag "0" is set for characters other than the first character. In addition, the Romaji-Kana conversion control unit 103 regards all parts that remain as Romaji to be the first characters of the Romaji-Kana conversion, and sets the attribute flag in the corresponding Kana character string attribute buffer 107 and Romaji-hira character string attribute buffer 110. r
lJ is set (step 306).

Finally, the Romaji-kana conversion control unit 103 advances the Romaji pointers RPI and RP2 to the beginning position of the part that has not been converted to Romaji-kana (step 307).

FIGS. 6(a) and 6(b) are diagrams showing a transition from a state in the middle of Romaji-kana conversion to a state where Romaji-kana conversion has been completed. The unconverted Roman characters that all had the attribute of the first character in the state before the transition shown in Figure 6(a) are
At the time of transition to the post-transition state shown in Figure (b), attribute flags have been appropriately attached in accordance with the units of Romaji-Kana conversion.

FIG. 7 is a diagram showing an example of the correspondence between an input Roman character string and a converted Kana character string.

Basically, the input character string is input in a size larger than one character (for example, r ny uJ -4F nyu j), so not all kana characters have a corresponding Roman character. , as shown in FIG. 7, it becomes possible to consistently manage the cursor position on the Roman character string buffer 109 even when the cursor is moved character by character in kana characters. Here, it is
A rule is established such that the next first character of the Roman character string buffer 109 corresponds to a kana character such as ``yuj'' that is not the first character of Roman character-kana conversion. FIGS. 6 and 7 show control of cursor movement when such rules are provided.

Specifically, when a command is given from the keyboard 105 to move the cursor to the front (to the right), the Romaji-Kana conversion control unit 103
is the cursor pointer CP of the kana character string buffer 106
Check the attribute of the character at the current cursor position pointed to by I by referring to the attribute flag in the kana character string attribute buffer 107 (step 401), and check whether the attribute indicates the first character of Romaji-kana conversion (if the attribute flag is rlJ). If the attribute of the character at the current cursor position pointed to by the cursor pointer CPI is the first character of Romaji-Kana conversion, the Romaji-Kana conversion control unit 103 converts the Romaji-Kana conversion control unit 103 to the Romaji-Kana conversion controller 103. The cursor pointer cP2 is advanced to the front (right) first character (step 403). If the attribute of the character at the current cursor position pointed to by the cursor pointer CPI is not the first character for Romaji-Kana conversion, the Romaji-Kana conversion control unit 103
skips step 403. Next, the Romaji-Kana conversion control unit 103 moves the cursor position pointed by the cursor pointer CPI of the Gana character string buffer 106 forward (to the right).
is advanced by one (step 404).

On the other hand, when an instruction is given from the keyboard 105 to move the cursor to the rear (to the left), the Romaji-kana conversion control unit 103
The current cursor position pointed to by the kana character string buffer 1060 cursor pointer CPI is advanced backward (to the left) by one position (step 5o1). Next, Romaji-kana conversion control unit 103
is the cursor pointer CP of the Gana character string buffer 106
The attribute of the character at the current cursor position pointed to by 1 is checked by referring to the Gana character string attribute buffer 107 (step 502), and whether the attribute indicates the first character of Romaji-Kana conversion (the attribute flag is "1"). whether it is)
(step 503), cursor pointer CP
If the attribute of the character at the current cursor position pointed to by I is the first character of Romaji-Kana conversion, Romaji-Kana conversion control unit 1
03 returns the cursor pointer CP2 of the Roman character string buffer 109 to the backward (left) first character (step 504), unless the attribute of the character at the current cursor position pointed to by the cursor pointer CPI is the first character for Roman character-kana conversion. , the romaji-kana conversion control unit 103 performs step 5.
Skip 04.

In this way, the presence of a character that is not the first character in Romaji-Kana conversion has a large effect on the movement behavior of the cursor on the Romaji character string buffer 109.

As a result of the above, if you move the cursor while inputting romaji-kana conversion, for example, ``niJ'' and ``niJ'' of ``rnyu''
Even when you move the cursor between ``Yuj'' and enter that part, the entire ``Kana'' string on the ``Kana'' character string buffer 106 is returned to the ``Romaji'' character string before the ``Romaji-Kana'' conversion. , it becomes possible to return to the Roman alphabet using certain rules.

Note that the present invention is also effective in cases where characters that cannot be converted to Romaji/Kana are mixed together, as is often the case when the intention is to input English words from the beginning. Needless to say.

〔Effect of the invention〕

As explained above, the present invention provides Romaji-Kana conversion that enables the Romaji-Kana conversion result string on the Romaji-Kana string buffer to be returned to the Romaji character string before Romaji-Kana conversion on the Romaji string buffer. In this method, when moving the cursor on a kana string buffer, the next first character of the romaji string buffer corresponds to a character that is not the first character of the romaji-kana conversion, such as a sukuon. By ensuring consistency between the cursor position on the string buffer and the cursor position on the Roman character string buffer, you can now move the cursor on the kana character string buffer using the kana characters as a reference. The cursor can be moved, and the character string resulting from Romaji-Kana conversion cannot be returned to the Romaji character string before Romaji-Kana conversion.It has the same usability as the conventional Romaji-Kana conversion method, so the character string resulting from Romaji-Kana conversion can be converted to Romaji or Kana. This has the effect of eliminating confusion for ordinary users who rarely convert back to the Roman character string before conversion.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a Romaji-Kana conversion method according to an embodiment of the present invention, FIG. 2 is a diagram showing the Kana buffer and Romaji buffer in FIG. 1 in more detail, and FIG. Figure 4 is a flowchart showing the processing when a single Roman character is input in the Romaji-Kana conversion control section in the figure. A flowchart showing the processing. Figure 5 is a flowchart showing the processing when the cursor moves back on the kana character string buffer of the romaji-kana conversion control section in Figure 1. Figures 6 (a) and (b) are for one character. Figure 7 shows an example of the correspondence between the contents of the Kana buffer and the contents of the Romaji buffer in Figure 1. This is a diagram. In the figure, 101...Romaji-kana conversion unit, 102...Romaji-kana conversion dictionary, 103...Romaji-kana conversion control unit, 104...Display unit, 105...Keyboard, 106...Kana characters Column buffer, 107... Kana string attribute buffer, 108... Kana buffer, 109... Roman character string buffer, 110... Roman character string attribute buffer, 111... Roman character buffer. .

Claims (1)

[Scope of Claims] The input Roman characters are stored in a Roman character string buffer, the Roman characters are converted to kana, and the character strings resulting from the Roman character to kana conversion are stored in a kana character string buffer, and the Roman characters stored in the kana character string buffer are It is possible to move the cursor and delete and insert character strings with respect to the character string resulting from the kana conversion, and the character string resulting from the romaji-kana conversion stored in the kana character string buffer can be stored in the romaji character string buffer. In a Romaji-Kana conversion method that can reversely convert the resulting Romaji-Kana conversion string into a Romaji character string before Romaji-Kana conversion, a A Roman character string attribute buffer that stores an attribute flag indicating whether each Roman character in a Roman character string is the first character of Roman character to Kana conversion, and a character string as a result of Roman character to Kana conversion that is provided corresponding to the above-mentioned Kana character string buffer. Kana string attribute buffer that stores attribute flags indicating whether each character is the first character of Romaji-Kana conversion, and when moving the cursor over the string resulting from Romaji-Kana conversion in the Kana string buffer. For characters that are not the first character of Romaji-Kana conversion, such as ``Zukuon'', a rule is established so that the cursor corresponds to the next first character on the Romaji string before Romaji-Kana conversion in the Romaji string buffer. a Romaji-Kana conversion control unit that controls a cursor position on a character string resulting from Romaji-Kana conversion in a character string buffer and a cursor position on a Romaji character string before Romaji-Kana conversion in the Romaji character string buffer; A romaji-kana conversion method characterized by having the following.