JPH09231316A - Handwritten character recognizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recognize a required large/small character of HIRAGANA(cursive form of Japanese syllabary) as a 1st candidate even when the input range of a hand-written character to a recognition frame is different in each user in the case of handwriting characters including large/small characters having the same shape. SOLUTION: When a small/large character recognizing threshold stored in a threshold memory is 25% and the input range of a hand-written character is 30% at the time of handwriting a small character 'tu' (in HIRAGANA) in a recognition frame 14h on a handwriting input picture displayed on a touch panel, a large character 'tu' and a small character 'tu' are respectively recognized as 1st and 2nd candidates and displayed on respective candidate display frames. When the small character 'tu' displayed as the 2nd candidate is specified by pen touch, the small/large character recognizing threshold is changed from 25% to 30%. Thereafter a small character is recognized and displayed as the 1st candidate in the case of a character less than 30% in characters including small/large characters.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handwritten character recognition device such as an electronic notebook having a function of recognizing characters input by handwriting.

[0002]

2. Description of the Related Art In a conventional handwritten character recognition device, when a handwritten character is input with a pen in a character recognition frame displayed on the touch panel, stroke data corresponding to the locus of the handwritten input character is input to the touch panel. It is detected as a coordinate data string of the pen touch position, character recognition is performed based on the stroke data composed of this coordinate data string, and a plurality of recognition candidate characters are displayed.

By selecting a target character from the displayed plurality of recognition candidate characters, the input of the character desired by the user is confirmed. In such a handwritten character recognizing device, for example, regarding a character having the same shape and different size, such as a capital letter "tsu" and a lowercase letter "tsu" in hiragana, an uppercase letter "V" and a lowercase letter "v" in the alphabet. Determines a threshold in the pen touch range for the frame for character recognition to determine whether uppercase letters are the first recognition candidates or lowercase letters are the first recognition candidates.

FIG. 6 is a diagram showing a relationship between an input range of handwritten characters and a threshold value with respect to a recognition frame in a conventional handwritten character recognition device. That is, for example, the threshold value corresponding to the vertical pen touch range with respect to the character recognition frame is 50%.
If the vertical pen touch range of the handwritten character with respect to the recognition frame is less than 50% of the whole, the first recognition candidate is lowercase, and if it is 50% or more, the first recognition candidate is uppercase. Becomes

That is, as shown in FIG. 6 (A), even if "v" is handwritten in the lower part of the recognition frame, as shown in FIG. 6 (B), in the vicinity of the center of the recognition frame. Even when "v" is input by handwriting, if the vertical range accompanying the handwriting input is 50% or more, a capital "V" is always displayed as the first recognition candidate.

[0006]

However, since the size of the handwritten character in the frame for character recognition varies depending on the individual user, some users intend to input by handwriting as a small letter "v". However, the pen touch range may exceed the threshold value of 50%, and there is a problem that the capital letter "V" is recognized as the first candidate.

Further, for characters having the same shape and different positions such as a comma "," for a subscript and a single quote "'" for a superscript, a threshold is set for the pen touch position with respect to the frame for character recognition. It is determined whether the superscript character is the first recognition candidate or the superscript character is the first recognition candidate.

That is, for example, when the threshold value corresponding to the pen touch position in the vertical direction with respect to the character recognition frame is set to be 50% from the lower end of the frame, the vertical direction of the handwritten character with respect to the recognition frame. If the pen touch position is less than 50% in height, the first recognition candidate becomes a subscript, and if it is 50% or more in height, the first recognition candidate becomes a superscript.

However, since the position of the handwritten character with respect to the frame for character recognition varies depending on the individual user, some users may think that the handwriting input is made as the single quote "'" of the superscript character. The position may be below the threshold of 50% from the bottom of the frame, and there is a problem that the comma "," of the subscript is recognized as the first candidate.

A first object of the present invention is to, when handwriting characters having the same shape and having uppercase and lowercase letters, input the uppercase letters or uppercase letters even if the input range of the handwritten letters to the recognition frame differs depending on the individual user. An object of the present invention is to provide a handwritten character recognition device that can recognize a desired character in lowercase as a first candidate.

A second object of the present invention is that, when handwriting a character having the same shape and having a subscript and a superscript, the input position of the handwritten character with respect to the recognition frame differs depending on the individual user. However, it is an object of the present invention to provide a handwritten character recognition device that can recognize a desired subscript or superscript character as a first candidate.

[0012]

That is, a first handwritten character recognition device according to the present invention is provided with a transparent tablet over a display screen, a touch panel for detecting coordinates designated by a pen touch, and a capital letter. Threshold storage means for storing a threshold for distinguishing recognition of lowercase letters, character recognition means for performing character recognition based on the coordinate data string detected by the touch panel and the threshold stored in the threshold storage means, and this character recognition Candidate display means for displaying a plurality of characters recognized by the means in the order of candidates, character selection means for selecting a target recognized character from the character string of the recognition candidates displayed by the candidate display means, and upper and lower case letters. When a candidate having a low rank is selected by the character selecting means in the recognition of a character having, the threshold value is stored according to the selection result. Characterized by comprising a threshold value changing means for changing the threshold value for distinguishing the recognition of uppercase and lowercase stored in means.

That is, in the first handwritten character recognition apparatus according to the present invention, when a handwritten character is input by pen-touching it on the touch panel, it is stored in the coordinate data string of the handwritten character detected by the touch panel and the threshold storage means. Character recognition is performed based on the threshold for distinguishing uppercase and lowercase letters, the recognition candidate character string is displayed, and when the target recognition character is selected from this recognition candidate character string, When the selected recognition character is a candidate with a low rank, the threshold for distinguishing the recognition of uppercase letters and lowercase letters stored in the threshold storage means is changed according to the selection result. If the first candidate is recognized as a lowercase letter when inputting by handwriting intentionally, by selecting the target uppercase letters displayed after the second candidate, Threshold for distinguishing the recognition of uppercase and lowercase letters are changed small, then when the handwritten by the same range will be recognized in the first candidate as a capital letter.

A second handwritten character recognition device according to the present invention is provided with a transparent tablet which is superposed on a display screen, a touch panel for detecting coordinates designated by a pen touch, and a superscript and a subscript. Position storage means for storing a position on the touch panel for distinguishing recognition, character recognition means for performing character recognition based on the coordinate data string detected by the touch panel and the position stored in the position storage means, A candidate display means for displaying a plurality of characters recognized by the character recognition means in the order of candidates,
Character selecting means for selecting a target recognized character from the character strings of the recognition candidates displayed by the candidate displaying means,
When the recognized character selected by the character selection means is a character after the second candidate in the recognition candidate character string displayed by the candidate display means, the coordinate data string detected by the touch panel is selected. And a position changing unit for changing the position for distinguishing the recognition of the superscript and the subscript so that the first candidate is recognized as the recognized character.

That is, in the second handwritten character recognition apparatus according to the present invention, when a handwritten character is input by pen-touching it on the touch panel, the handwritten character coordinate data string detected by the touch panel and stored in the position storage means. Character recognition is performed based on the position on the touch panel for distinguishing the recognition of superscripts and subscripts, the recognition candidate character string is displayed, and the target recognition character string is selected from the recognition candidate character strings. When the selected recognition character is a character after the second candidate in the displayed recognition candidate character string, the coordinate data string detected by the touch panel is selected. Since the position for distinguishing the superscript and subscript recognition is changed so that the first candidate is recognized as a recognized character,
For example, if the first candidate is recognized as a superscript when handwriting with the intention of a subscript, the superscript is selected by selecting the target subscript displayed after the second candidate. The position for distinguishing the recognition of the character and the subscript is changed to a higher position, and when the handwriting input is performed at the same position next time, the first candidate is recognized as the subscript.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an external configuration of an electronic notebook according to an embodiment of a handwritten character recognition device of the present invention.

On the front surface of the electronic notebook main body 10, a touch panel 13 is provided over almost the entire surface of the electronic notebook main body 10 by stacking a transparent tablet 12 on the display screen of the liquid crystal display unit 11. On the touch panel 13, a handwriting input screen is displayed when various data such as memo data and schedule data is input. On the handwriting input screen, a recognition for inputting handwritten characters by pen touch and recognizing the characters. Frames 14a to 14d are provided, and a candidate display frame 15 for displaying a recognition candidate character that is character-recognized based on the stroke data of the handwritten character input to the recognition frames 14a to 14d.

The recognized character of the first candidate displayed in the candidate display frame 15 or the recognized character selected from a plurality of candidate characters is displayed in the confirmed data display area 16.

Here, the handwritten characters input to the recognition frames 14a to 14d are character-recognized based on the stroke data composed of the coordinate data string detected by the tablet 12 corresponding to the locus of the handwritten character, and The recognized characters are, for example, "tsu" and "tsu" or "V" and "v".
In the case where uppercase letters and lowercase letters have the same shape, the range of handwritten data in the vertical direction of the recognition frames 14a to 14d is equal to or larger than a threshold value (range) for distinguishing uppercase / lowercase recognition or less. Depending on whether it is an uppercase letter or a lowercase letter, it is recognized as the first candidate.

In this case, the threshold value (range) for distinguishing the uppercase / lowercase recognition is "100", which is the vertical length of the recognition frames 14a to 14d, and is the vertical length occupied by the handwritten data. It is set as a percentage "%".

The uppercase / lowercase recognition threshold is changed according to the result of character recognition. If the recognized characters have the same shape, such as a comma "," and a single quote "'", and a subscript and a superscript exist, the position of the handwritten data with respect to the vertical direction of the recognition frames 14a to 14d. The subscript or the subscript is recognized as the first candidate depending on whether or not is greater than or less than a threshold value (position) for distinguishing the recognition of subscript / superscript.

In this case, the thresholds (positions) for distinguishing the recognition of the subscript / superscript are the recognition frames 14a ...
The vertical height of 14d is set to "100", and the recognition frame 14
It is set as the ratio "%" of the height from the lower end of a to 14d to the position of the handwritten data.

The subscript / superscript recognition threshold is changed according to the result of character recognition. FIG. 2 is a block diagram showing a configuration of an electronic circuit of the electronic notebook.

The electronic circuit of this electronic notebook has a control unit (CP
U) 20. The control unit 20 includes the touch panel 1
The operation content is determined according to the touch position coordinate data detected by the tablet 12 in accordance with the pen touch operation in 3, and the system program stored in advance in the ROM 21 is activated, and the operation control of each part of the circuit is performed according to this system program. This control unit (C
The PU) 20 is connected to the touch panel 13, the ROM 21, the RAM 22, and the threshold memory 23.

In the ROM 21, a system program for controlling the entire electronic notebook is stored in advance, and
Separate application programs that control the various operation modes such as memo mode and schedule mode are also stored, and a character recognition processing program that is activated in the display state of the handwriting input screen in various operation modes is also stored. It

The RAM 22 is provided with a notebook data register in which notebook data input in various operation modes such as memo data and schedule data is registered, and, for example, the recognition frame 14a in the handwriting input screen.
14d, a handwritten character register in which stroke data corresponding to the locus of a character handwritten and input by handwriting is temporarily stored as a coordinate data string, and recognition performed by character recognition based on the stroke data of the handwritten character stored in the handwritten character register. Candidate character register in which candidate characters are temporarily stored,
A confirmed character register or the like for storing the character data whose input is confirmed is provided.

The threshold memory 23 is for recognizing uppercase / lowercase letters for distinguishing uppercase / lowercase letters in character recognition of handwritten data input in the recognition frames 14a to 14d of the handwriting input screen displayed on the touch panel 12. A threshold value and a subscript / superscript character recognition threshold value for distinguishing and recognizing subscript / superscript are stored.

Next, the handwritten character recognition operation in the electronic notebook having the above structure will be described. FIG. 3 is a flowchart showing a handwritten character recognition process in the electronic notebook.

FIG. 4 is a diagram showing a character recognition state in the case of handwriting input as a small letter "tsu" accompanying the handwritten character recognition processing in the electronic notebook. FIG. 5 is a diagram showing a character recognition state in the case where handwriting input is made as a single quote "'" of a superscript character accompanying the handwritten character recognition processing in the electronic notebook.

For example, the uppercase / lowercase recognition threshold stored in the threshold memory 23 is "25%", and the subscript / superscript recognition threshold stored in the threshold memory 23 is For example, as shown in FIG. 4A, with respect to the recognition frame 14b of the handwriting input screen displayed on the touch panel 13 in the state of being set to "50%", as shown in FIG.
When the handwriting input is made by pen-touching the hiragana character "tsu" with the intention of lowercase letters, the coordinate data string detected by the tablet 12 is given to the control unit (CPU) 20, and its stroke data and the uppercase letters stored in the threshold value memory 23 are input. Character recognition is performed on the basis of the lowercase / lowercase character recognition threshold value "25%" and the subscript / superscript character recognition threshold value "50%" (steps S1 and S2).

In this case, the vertical range of the handwritten character "tsu" with respect to the recognition frame 14b is 30%, and it is determined that the uppercase / lowercase recognition threshold "25%" or more is satisfied. The uppercase letter "tsu" is recognized as the first candidate, and the lowercase letter "tsu" is displayed in the candidate display frame 15 as the second candidate, "fu" as the third candidate, and ">" as the fourth candidate (step S2, S3).

In this way, the recognition candidate character is "tsu" for the handwritten data input with the intention of lower case "tsu".
When the target character “tsu” displayed as the second candidate is selected by pen-touching with “tsu”, “fu”, “>” displayed in the candidate display frame 15, the selected recognition character “tsu” is selected. The selected character "tsu" is the first character according to the judgment that the character is recognized using the upper / lower case recognition threshold.
The current upper / lower case recognition threshold value “25%” stored in the threshold value memory 23 so as to be recognized as a candidate is changed to “30%” (steps S4 → S5, S).
6).

That is, the hiragana character "tsu" input by handwriting in the recognition frame 14b is input in the range of 30% in the vertical direction of the recognition frame 14b, and the selected recognition character is the second candidate. Since it is a lower case "tsu",
The uppercase / lowercase recognition threshold is “30%” so that handwritten characters input in the range of% are recognized as lowercase.
Is enlarged and changed to and stored in the threshold memory 23 (steps S6 and S7).

As a result, as shown in FIG. 4 (B), for characters up to "30%" in the range of handwritten characters input to the recognition frames 14a to 14d, the characters of the same shape are capitalized / lowercased. Is present, the lowercase letter is recognized as the first candidate and is displayed in the candidate display frame 15.

Therefore, the recognition frame 14 is set according to each user.
Even if the size of the handwritten characters in a to 14d changes, the lowercase letters are recognized and displayed as the first candidate in the case of handwritten characters intended to be in lowercase, and the uppercase letters are assumed in the case of handwritten characters intended to be in uppercase. Will be recognized and displayed as the first candidate.

Further, as shown in FIG. 5 (A), when the handwriting input is performed by pen-touching the recognition frame 14c of the handwriting input screen displayed on the touch panel 13 as if it were a single quote of a superscript character, The coordinate data string detected by the tablet 12 is given to the control unit (CPU) 20, and the stroke data and the threshold value “25%” for recognizing uppercase / lowercase letters stored in the threshold memory 23,
Character recognition is performed based on the subscript / superscript character recognition threshold value "50%" (steps S1 and S2).

In this case, the vertical position of the handwritten character "," with respect to the recognition frame 14c is input at a position of 40% from the lower end of the frame, and the subscript / superscript character recognition threshold "50%". Since it is determined to be less than, the subscript comma "," is recognized as the first candidate, and the superscript single quote "'" is displayed as the second candidate in the candidate display frame 15 (step S2). , S3).

In this way, with respect to the handwritten data input with the intention of "'" of the superscript single quote, the recognition candidate character is displayed as ",""'" in the candidate display frame 15 and the second character is displayed. When the target single quote "'" displayed as a candidate is selected by pen-touching, it is determined that the selected recognition character "'" has been character-recognized using the subscript / superscript character recognition threshold value. Accordingly, the current subscript / superscript character recognition threshold value “50%” stored in the threshold value memory 23 is changed to “40%” so that the selected character “′” is recognized as the first candidate. (Steps S4 → S5, S6).

That is, the handwritten input "," in the recognition frame 14c is input at a height of 40% from the lower end of the recognition frame 14c, and the selected recognition character is the second single quote ". Therefore, the subscript / superscript character recognition threshold value is “40” so that the handwritten character input at the height of 40% is recognized as a superscript character.
% "And is stored and stored in the threshold memory 23 (steps S6 and S7).

As a result, as shown in FIG. 5B, the handwritten characters input to the recognition frames 14a to 14d with a height of "40%" or more have the same shape as the subscript. When there is a character / superscript, the superscript is recognized as the first candidate and is displayed in the candidate display frame 15.

Therefore, the recognition frame 14 can be set according to each user.
Even if the position of the handwritten character changes in a to 14d, if the handwritten character is intended as a subscript, the subscript is recognized and displayed as the first candidate, and the handwritten character is intended as a superscript. In the case of characters, the superscript will be recognized and displayed as the first candidate.

Therefore, according to the electronic notebook having the above-described structure, when the handwriting input is made in the recognition frame 14b on the handwriting input screen displayed on the touch panel 13 with the intention of lowercase "tsu", it is stored in the threshold memory 23. The uppercase letter "tsu" is the first candidate and the lowercase letter "tsu" is the second candidate because the input range of handwritten characters is "30%". In the case of being recognized and displayed on 15, the lower case / upper case recognition threshold value is changed from “25%” to “30%” by pen-touching and designating the small letter “tsu” displayed as the second candidate.
After that, up to 30% of handwritten characters that have both lowercase / uppercase letters have lowercase letters first.
Since the handwritten characters are recognized and displayed as candidates, the handwritten characters intended to be in lowercase can be recognized and displayed as the first candidate even if the size of the handwritten characters in the recognition frame 14b varies depending on the individual user. , A handwritten character that is input as an uppercase letter can be displayed by recognizing the uppercase letter as the first candidate.

Further, according to the electronic notebook having the above-mentioned structure, when the handwriting input is performed with the intention of "'" of a single quote with respect to the recognition frame 14c on the handwriting input screen displayed on the touch panel 13, it is stored in the threshold memory 23. The subscript / superscript recognition threshold is "50%". The input position of handwritten characters is "40%", so the subscript comma "," is the first candidate and the superscript single quote "'".
Is recognized and displayed in the candidate display frame 15 as the second candidate, the single-quote “′” displayed as the second candidate is designated by pen-touching to specify the subscript / superscript character recognition threshold value. From "50%" to "4
It is changed to 0% ”, and after that, for handwritten characters with a height of 40% or more, if there is both a subscript and a superscript, the superscript character is recognized and displayed as the first candidate. Even if the position of the handwritten character with respect to the recognition frame 14c is different depending on the individual user, the handwritten character that is input as a subscript can be displayed by recognizing the subscript as the first candidate, and is intended as a superscript. With respect to the input handwritten character, the superscript character can be recognized and displayed as the first candidate.

In the above-described embodiment, when the recognition character after the second candidate displayed in the candidate display frame 15 is selected in the character recognition processing, the selected character is lowercase / lowercase.
When the characters are uppercase letters or both subscripts / superscripts, the lowercase / uppercase recognition threshold value or the subscript / superscript character recognition threshold value stored in the threshold value memory 23 at that time is set to the recognition frame 14a to The configuration is such that the range or position of the handwritten input characters for 14d is directly changed, but, for example, the range or position of the handwritten input characters for the recognition frames 14a to 14d is changed by adding or subtracting a certain value. May be

That is, for example, in the embodiment shown in FIG.
The lowercase / uppercase recognition threshold "25%" is changed to "35%" which is a range "30%" of the characters input by handwriting and a certain value "5%" is added, or the embodiment shown in FIG. Then, the subscript / superscript recognition threshold value “50%”
May be changed to "35%" by subtracting a constant value "5%" from the position "40%" of the character input by handwriting.

Further, the lowercase / uppercase recognition thresholds are set in correspondence with the occupation range of characters in the vertical direction of the recognition frames 14a to 14d.
It may be set in correspondence with the occupied area of the character with respect to d.

[0047]

As described above, according to the first handwritten character recognition device of the present invention, when a handwritten character is input by pen-touching the touch panel, the coordinate data string of the handwritten character detected by the touch panel is input. And character recognition is performed based on a threshold value for distinguishing between uppercase and lowercase recognition stored in the threshold value storage means, a recognition candidate character string is displayed, and the target recognition character string is selected from the recognition candidate character string. When the selected recognition character is a candidate with a low rank when selecting, the threshold for distinguishing uppercase and lowercase recognition stored in the threshold storage unit is changed according to the selection result. Therefore, for example, if the first candidate is recognized as a lowercase letter when inputting by handwriting as if it were an uppercase letter, select the target uppercase letter displayed after the second candidate. It is, threshold value for distinguishing the recognition of the case is changed small, then when the handwritten by the same range will be recognized in the first candidate as a capital letter.

Therefore, when inputting characters having the same shape and having uppercase and lowercase letters by handwriting, even if the input range of the handwritten character to the recognition frame varies depending on the individual user, the desired character of the uppercase or lowercase letters is displayed first. It can be recognized as one candidate.

Further, according to the second handwritten character recognition device of the present invention, when a handwritten character is input by pen-touching it on the touch panel, the coordinate data string of the handwritten character detected by the touch panel and the position storing means are stored. Character recognition is performed based on the position on the touch panel for distinguishing the stored superscript and subscript recognition, the recognition candidate character string is displayed, and the target is selected from the recognition candidate character strings. When the recognition character is selected, if the selected recognition character is a character after the second candidate in the displayed recognition candidate character string, the coordinate data string detected by the touch panel is selected. Since the position for distinguishing the recognition of the superscript and the subscript is changed so that the first candidate is recognized as the recognized character,
For example, if the first candidate is recognized as a superscript when handwriting with the intention of a subscript, the superscript is selected by selecting the target subscript displayed after the second candidate. The position for distinguishing the recognition of the character and the subscript is changed to a higher position, and when the handwriting input is performed at the same position next time, the first candidate is recognized as the subscript.

Therefore, when handwriting a character having the same shape and having a subscript and a superscript, even if the input position of the handwritten character with respect to the recognition frame differs depending on the individual user, the subscript or the upper character It becomes possible to recognize the desired character of the attached character as the first candidate.

[Brief description of drawings]

FIG. 1 is a diagram showing an external configuration of an electronic notebook according to an embodiment of a handwritten character recognition device of the present invention.

FIG. 2 is a block diagram showing a configuration of an electronic circuit of the electronic notebook.

FIG. 3 is a flowchart showing a handwritten character recognition process in the electronic notebook.

FIG. 4 is a diagram showing a character recognition state in the case where handwriting input is performed as a lower case “tsu” accompanying handwriting character recognition processing in the electronic notebook.

FIG. 5 is a diagram showing a character recognition state in the case where handwriting input is made as a single quote “′” of a superscript character accompanying the handwritten character recognition processing in the electronic notebook.

FIG. 6 is a diagram showing a relationship between an input range of handwritten characters with respect to a recognition frame and a threshold value in a conventional handwritten character recognition device.

[Explanation of symbols]

 10 ... Device main body, 11 ... Liquid crystal display part, 12 ... Transparent tablet, 13 ... Touch panel, 14a-14d ... Recognition frame, 15 ... Candidate display frame, 16 ... Confirmed data display area, 20 ... Control part (CPU), 21 ... ROM, 22 ... RAM, 23 ... Threshold memory.

Claims (5)

[Claims] 1. A touch panel, which is provided with a transparent tablet overlaid on a display screen, for detecting coordinates designated by pen touch, threshold storage means for storing a threshold for distinguishing uppercase and lowercase recognition, and the touch panel. A character recognizing means for recognizing a character based on the coordinate data string detected by the above and the threshold value stored in the threshold value storing means; and a candidate display means for displaying a plurality of characters recognized by the character recognizing means in a candidate order. A character selection means for selecting a target recognition character from the character strings of the recognition candidates displayed by the candidate display means, and a candidate having a lower rank is selected by this character selection means in recognizing characters having uppercase and lowercase letters. In this case, the threshold value for distinguishing uppercase and lowercase letters stored in the threshold value storage means is changed according to the selection result. Handwritten character recognition apparatus characterized by comprising a threshold value changing means that. 2. The handwritten character recognition device according to claim 1, wherein the threshold value for distinguishing between uppercase and lowercase recognition is a ratio of a pen touch range in a handwritten character input frame displayed on the touch panel. . 3. A touch panel provided with a transparent tablet overlaid on a display screen for detecting coordinates designated by a pen touch, and a position on the touch panel for distinguishing between recognition of superscripts and subscripts. Position storage means, character recognition means for performing character recognition based on the coordinate data string detected by the touch panel and the position stored in the position storage means, and a plurality of characters recognized by the character recognition means in the order of candidates. A candidate display unit for displaying, a character selecting unit for selecting a target recognized character from the character strings of the recognition candidates displayed by the candidate displaying unit, and the position storing unit according to the selection result by the character selecting unit. And a position determining means for determining a position for distinguishing the recognition of the superscript and the subscript stored in That handwriting recognition device. 4. The touch panel when the position determining means is a character after the second candidate in the recognition candidate character string displayed by the candidate display means, when the recognized character selected by the character selecting means is a character. Is a position changing means for changing the position for distinguishing the recognition of the superscript and the subscript so that the coordinate data sequence detected by the first candidate is recognized as the selected recognition character. The handwritten character recognition device according to claim 3. 5. The handwriting according to claim 3, wherein the position for distinguishing the recognition of the superscript and the subscript is a position on the touch panel from below or from above. Character recognizer.