JP3045886B2 - Character processing device with handwriting input function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Japanese word processor with a handwriting input function and an electronic notebook with a handwriting input function, which converts a character string input by handwriting into a kanji notation using a built-in kana kanji dictionary. The present invention relates to a character processing device with a function.

[0002]

2. Description of the Related Art Heretofore, in a character processing apparatus with a handwriting input function of this kind, for example, not only kana characters but also kanji characters are manually input from a pen-type tablet device mounted as an input device by using a kana kanji character recognition means. It became possible to do. Therefore, there has been proposed a method of adding a heading including kanji to a conventional kana-kanji conversion dictionary to convert a character string with kana-kanji mixed by handwriting into a normal kanji notation (Japanese Patent Publication No. 4-35785). , See text composer).

That is, a kanji character which can be correctly written by a user is written in kanji as it is, and a kanji character that cannot be remembered is written in a kana kanji character string such as written in kana as a reading by a sentence creating device as shown in FIG. It is a method of converting to.

FIG. 6 is a block diagram showing a configuration of a conventional text creating apparatus. 61 is a character input unit capable of inputting a kana-kanji mixed character string, 62 is a character recognition unit for recognizing the entered kana-kanji mixed character string, 63 is a kana-kanji conversion dictionary with kana-kanji mixed headings, 64 is an input A kana-kanji conversion unit 65 for converting a character string into a kanji notation by referring to a kana-kanji conversion dictionary 63 with a kanji-kana mixed heading, and an output unit 65 for outputting the converted character string to the kana-kanji conversion unit 64.

[0005]

However, in Japanese Patent Publication No. 4-35785, by adding a heading with kana-kanji mixed characters, for example, the heading character cannot be represented by one byte, and the kana-kanji conversion dictionary cannot be used. In comparison, the storage capacity of the dictionary increases. In addition, by registering the same word as a separate item in multiple headings,
Not only does the data volume of the dictionary increase due to duplication of notation, part-of-speech, semantic classification data, etc., but the presence of words with the same notation, part-of-speech, and meaning in the dictionary means that matching between the input character string and the word dictionary Also, it may cause a complicated conversion process for the individual word (conversion candidate) after the removal.

The present invention has been made in consideration of the above problems, and includes, for example, words related to characters included in the notation or reading of words stored in a word notation dictionary (eg, a dictionary for kana-kanji conversion). Using a word number table (word identification data table) in which numbers are registered, a handwritten input in which a handwritten input character string in which reading and notation are mixed can be correctly converted to a desired word notation using a normal word notation dictionary It is intended to provide a character processing device with a function.

[0007]

FIG. 1 is a block diagram showing a basic configuration of the present invention. In FIG. 1, the present invention provides an input means 10 capable of inputting a character string by handwriting.
1, a character recognition unit 102 that reads and recognizes an input character string, a character storage unit 103 that stores a recognized character string, and a word notation dictionary 104 that stores word notations.
A word number table 105 for storing word numbers related to characters included in the reading or notation of words stored in the word notation dictionary 104; and a character string stored in the character storage unit 102 based on the word number table 105. And a word number search means 106 for searching for a word number corresponding to the word number and extracting a common word number from the searched word number, and a word notation corresponding to the common word number extracted with reference to the word notation dictionary 104. Word notation conversion means 107 for conversion
And a display unit 108 for displaying the notation of the converted word on a display screen.

The input means 101 is preferably constituted by a pen-type tablet device capable of inputting a character string containing kana and kanji.

Preferably, the word notation dictionary 104 is a kana-kanji conversion dictionary in which word notations are stored in advance in the order of word numbers.

The word number table 105 preferably has an area for storing a plurality of word numbers associated with characters included in the notation or reading of words in the word notation dictionary 104 in units of one character.

In the present invention, the input means 101
For example, a pen-type tablet device capable of inputting Chinese characters is used. Character recognition means 102, character storage means 103,
The word notation dictionary 104, the word number table 105, the word number search means 106, and the word notation conversion means 107 include:
A microcomputer including a CPU, a ROM, a RAM, and an I / O port is used. The character storage means 10
Normally, the RAM 3 is used as 3. As the word notation dictionary 104 and the word number table 105, a ROM or a magnetic recording device such as an FD (floppy disk) device or an HD (hard disk) device is usually used. As the display means 108, LC
A display device such as a D (liquid crystal display) device, a CRT display device, and an EL display device is used.

[0012]

According to the present invention, in the basic configuration of FIG.
When the character string input by handwriting from the input unit 101 is read and recognized by the character recognition unit 102, it is stored in the character storage unit 103. The word notation dictionary 104 stores word notations in the order of word numbers, and the word number table 105 stores word numbers associated with characters included in the reading or notation of the words stored in the word notation dictionary 104. I have. Here, the word number search means 106 calls the character string stored in the character storage means 103, searches for the word numbers corresponding to each character based on the word number table 105, and further searches the common word numbers from the searched word numbers. Is extracted, the word notation conversion unit 107 converts the word notation into a word notation corresponding to the extracted common word number with reference to the word notation dictionary 104. The notation of the converted word is displayed on the display screen of the display unit 108 and can be confirmed.
Therefore, it becomes possible to correctly convert the handwritten input character string in which the reading and the notation are mixed into the desired word notation using the ordinary word notation dictionary 104.

Since the input means 101 is constituted by a pen-type tablet device capable of inputting a character string containing kana and kanji characters, a character string for converting into a desired word notation by touching with a pen is input on the tablet. Can be.

Since the word notation dictionary 104 is composed of a kana-kanji conversion dictionary in which word notations are stored in the order of word numbers, a normal dictionary can be mounted.

The word number table 105 has an area for storing a plurality of word numbers associated with characters included in the notation or reading of words in the word notation dictionary 104 in units of one character. Number table 105
When a word number corresponding to the character string stored in the character storage means 102 is searched based on the extracted word numbers, and a common word number is extracted from the searched word numbers, it has already been narrowed down to a desired word notation. This simplifies the subsequent conversion process, thereby improving the conversion accuracy.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. The present invention is not limited by this. Further, the present invention is suitable mainly for a Japanese word processor with a handwriting input function and an electronic notebook with a handwriting input function, and the following components are usually used in addition to achieving the character processing device with a handwriting input function of the present invention. The following description is based on the assumption that the system has the function of a Japanese word processor with a handwriting input function.

FIG. 2 is a block diagram showing an embodiment in which the present invention is applied to a Japanese word processor with a handwriting input function. In FIG. 1, reference numeral 1 denotes a control unit, which comprises a CPU for executing a program, a ROM for storing a dictionary / program for character recognition and a program for kana-kanji conversion, and a RAM for storing data during execution of the program. ing. Reference numeral 2 denotes an input unit, which is configured by an electromagnetic induction type or piezoelectric type pen type tablet device capable of inputting handwritten characters. Reference numeral 3 denotes a display unit, which is composed of an LCD device used for displaying input characters and conversion candidates, or a CRT display device.

Reference numeral 4 denotes an input character storage unit, which comprises a buffer (RAM) for storing the handwritten input characters input from the input unit 2 after being recognized by the control unit 1. Reference numeral 5 denotes a word notation dictionary (for example, a dictionary for converting kana to kanji), which is composed of a ROM that stores word notations in the order of word numbers. Reference numeral 6 denotes a word number table, which is constituted by a ROM having an area for storing a plurality of word numbers associated with characters included in the notation or reading of words stored in the word notation dictionary 5 in units of one character. Here, in the word number table 6, a serial number of each word stored in the word notation dictionary 5 is used as word identification data.

Reference numeral 7 denotes a word number storage unit, which converts a character string stored in the input character storage unit 4 by the control unit 1 into a word number using the word number table 6, and converts the converted word number into a common word number. Is selected from the RAM, a buffer for storing the common word number is formed from the RAM. Reference numeral 8 denotes a conversion result storage unit, which is a buffer for storing the conversion result when the control unit 1 converts a common word number into the word notation using the word notation dictionary 5.
It is composed of

FIG. 3 is an explanatory diagram showing the relationship between the word numbers of the word notation dictionary and the notations. In the figure, the word number 30 is a number indicating the storage order of the word reading 31 and the notation 32 of the word notation dictionary 5, and the word identification data (word I
It need not be stored as D). Here, the reading / notation is shown as a fixed length, but this does not limit the dictionary that stores the notation.

FIG. 4 is an explanatory diagram showing the structure of the word number table of the present invention. The figure shows the structure of a table including, as headings 41a, 41b, and 41c, characters including readings or notations of the word notation dictionary 5, and areas 42a, 42b, and 42c for storing the word numbers 30 corresponding to the headings. Here, for example, a description will be given of a character string of “turn around” or “togo”, which is a mixture of notation and reading of “corridor” and “integration”. In the word number table 6, "times" and "to" are registered in the heading 41a of the first character.
Corresponding to "times", each word number such as "corridor", "recollection", "circuit" is registered in the area 42a.
In addition, respective word numbers such as "integration" and "unification" are registered in the area 42a corresponding to "to".

The word numbers of "ro" and "u" registered in the heading 41b of the second character are also registered in the areas 42b and 4 for "u" and "go" registered in the heading 41c of the third character.
2c. The fourth and subsequent characters are similarly registered, but are omitted in FIG.

FIG. 5 is a flowchart showing the process of converting the word notation according to the present invention. Hereinafter, for example, the flow of the process of converting the character string “rou” to the notation “corridor” will be described.
This will be described with reference to the flowchart of FIG. Here, it is assumed that the character string “Kanarou” mixed with kana and kanji handwritten and input from the input unit 2 is recognized by the control unit 1 and the character string “Kanarou” is stored in the input character storage unit 4.

Step 501: When a character string “turn” is called from the input character storage unit 4, the first character “turn” is targeted. Step 502: One character “times” as a target is extracted. Step 503: Search the heading 41 (41a for the first character, 41b for the second character,...) Of the word number table 6 corresponding to the extracted character position. Step 504: If there is a headline that matches the target input character, the process proceeds to step 505. If not, the search fails and the process proceeds to step 513.

Step 505: If the target input character is the last character in the input character storage unit 6, the process proceeds to step 506. If there is still the next character, the target is moved to the next character and the process returns to step 502. Step 506: Count the number of word numbers in the group of word numbers corresponding to each input character searched in the word number table 6. Step 507: Search for the minimum number of word number groups and store them in the word number storage 7.

Step 508: Retrieve the smallest word number group from the remaining word number groups. Step 509: A common word number is extracted from the word number extracted in step 508 and the word number stored in the word number storage unit 7 and stored in the word number storage unit 7. Step 510: If there is no common word number and the word number storage unit 7 becomes empty, the extraction fails and step 51
Proceed to step 3. If a common word number exists, proceed to step 511. Step 511: If a word number group that has not been processed remains, the process returns to step 508. When the common numbers of all the word number groups are extracted, the process proceeds to step 512.

In the case of "rou", "10150" and "10154" are extracted as common word numbers of "rou" and "ro" in a loop of steps 508 to 511, and further, a common word number of "u" is extracted. It is narrowed down to the word number “10154”. Step 512: Search and convert the word notation in the word notation dictionary 5 by the extracted common word number (in this case, “10154”). The conversion result notation “corridor” is converted into the conversion result storage unit
To be stored. Step 513: Notify that the search / extraction / conversion has failed, and end the processing (error processing).

As described above, by using the table storing the characters included in the pronunciation or notation of a word and the word number related to the character, a character string in which the reading and the notation are mixed is converted into the word through the word number. It can be converted to the notation of the notation dictionary. Also, it is troublesome to find candidates such as "corridor" and "palpitations" for "turn around" and "movement", so if the user specifies or if notation and reading are mixed from the character string before and after It is easier to convert a character string containing kanji only when it is determined. According to the present invention, the conversion means for converting a character string in which notation and reading are mixed is separated from the heading of the kana-kanji conversion dictionary, so that it is suitable for limiting conversion from a character string in which notation is mixed as described above.

In the conversion process using the word number table 6 of the present invention, for example, in order to prevent not only “circuits” but also “corridors” from being “candidates” as “candidates”, the character of the heading 41 is terminated at the end. A mark indicating the presence may be added to the word number (see the shaded word number 42c in FIG. 4), or the word number ending with the character of the heading 41 and the other word numbers may be separated. Good. In the embodiment of the present invention, the heading 41 is a reading or written character. However, the reading may be in units of letter sounds (for example, “kan”, “ko”, “sho”).

In this embodiment, the word number table 6 prepared for each character position of the input character string is prepared. However, a table is provided in which the characters included in the input character string correspond to the word numbers regardless of the character position. The check as to whether the words remaining as candidates can be associated with the input character string may be performed using a kana-kanji conversion dictionary. For example, for the input character strings of “Sokai” and “Sokai”, both “General Assembly” and “Memorial” are conversion candidates, but the input character strings correspond to the reading / notation of the dictionary to narrow down to the correct candidates. be able to.

[0031]

According to the present invention, in the notation conversion of a character string in which the notation and the reading are mixed, the identification data of the word is converted once using the word number table and then converted into the notation in the word notation dictionary. Kanji conversion dictionary headings (reading)
There is no need to register kanji. Therefore, in the kana-kanji conversion dictionary, words having the same notation, part-of-speech, and meaning can be unified, thereby preventing an increase in dictionary capacity and simplifying the conversion process after dictionary search.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of the present invention.

FIG. 2 is a block diagram showing an embodiment in which the present invention is applied to a Japanese word processor with a handwriting input function.

FIG. 3 is an explanatory diagram showing the relationship between word numbers and notations in a word notation dictionary.

FIG. 4 is an explanatory diagram showing the structure of a word number table according to the present invention.

FIG. 5 is a flowchart showing a process of notation conversion according to the present invention.

FIG. 6 is a block diagram illustrating a configuration of a conventional text creation device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control part 2 Input part 3 Display part 4 Input character storage part 5 Word notation dictionary 6 Word number table 7 Word number storage part 8 Conversion result storage part

Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G06F 17/21-17/27 G06F 17/30

Claims (4)

(57) [Claims] An input unit capable of inputting a character string by hand, a character recognizing unit that reads and recognizes an input character string, a character storage unit that stores a recognized character string, and a notation of a word. A stored word notation dictionary, a word number table storing word numbers related to characters included in readings or notations of words stored in the word notation dictionary, and characters stored in character storage means based on the word number table A word number search means for searching for a word number corresponding to a column and extracting a common word number from the searched word number, and converting the word notation corresponding to the extracted common word number with reference to a word notation dictionary Word notation conversion means,
A character processing device with a handwriting input function, comprising a display means for displaying a converted word notation on a display screen. 2. A character processing apparatus with a handwriting input function according to claim 1, wherein said input means is constituted by a pen-type tablet capable of inputting a character string containing kana-kanji characters. 3. The character processing apparatus with a handwriting input function according to claim 1, wherein the word notation dictionary is constituted by a kana-kanji conversion dictionary in which word notations are stored in the order of word numbers in advance. . 4. The word number table includes an area for storing a plurality of word numbers associated with characters included in the notation or reading of a word in a word notation dictionary in units of one character. A character processing device with a handwriting input function as described.