JPH07160825A - On-line character recognizing device having registering function - Google Patents

Abstract

PURPOSE:To provide an on-line character recognizing device having a registering function by which necessary character code information can be surely obtained by a simple operation when a character registration is performed. CONSTITUTION:A character recognition part 3 retrieves a character dictionary 5 and extracts a character code holding feature data which is most approximate to the feature data from a character feature extraction part 2. A sentence/table generation part 7 generates the files of desired sentence data and table including the character code from the character recognition part 3. A sentence/table display part 8 displays the sentence data and table from the sentence/table generation part 7. A registration character selection part 9 outputs the character code of the character selected by a user of the character displayed by the sentence/table display part 8. A character registration part 4 generates new dictionary data composed of the feature data from the character feature extraction part 2 and the character code information from the registration character selection part 9 and registers the dictionary data in the character dictionary 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-line character recognition device for recognizing characters by using handwriting data of handwritten characters by an input device such as a pen, and more particularly to a character dictionary of character data input by a user. The present invention relates to an online character recognition device having a registration function.

[0002]

2. Description of the Related Art A conventional online character recognition device having a character registration function is provided with a first character input section 3 as shown in FIG.
1, a character feature extraction unit 32, a character recognition unit 33, a character registration unit 34, a character dictionary 35, and a second character input unit 36.
Was equipped with. The first character input unit 31 collects handwriting data of characters written by the user and extracts the character feature extraction unit 32.
Pass to. The character feature extraction unit 32 uses the first character input unit 31.
Character feature data necessary for character recognition is extracted from the handwriting data from and is passed to the character recognition unit 33 and the character registration unit 34. The character recognition unit 33 searches the character dictionary 35 to detect the character code of the dictionary data holding the character feature data that is the closest to the character feature data from the character feature extraction unit 32. The character registration unit 34 creates new dictionary data including the character feature data from the character feature extraction unit 32 and the character code from the second character input unit 36 to generate the character dictionary 3
Additional registration in 5. The character dictionary 35 stores dictionary data including character codes and character feature data. Second
The character input unit 36 is for the user to input characters by key input using a keyboard or the like.

That is, in the conventional online handwritten character recognition apparatus having a registration function, a character code is keyed into the second character input unit 36 in order to obtain character code information corresponding to handwriting data of a character to be registered. (JP-A-5
No. 5-13597) or a method for obtaining a character code by carefully re-inputting characters into the first character input unit 31 and correctly recognizing them (see Japanese Patent Application Laid-Open No. Hei 1-103787).
Alternatively, a method of inputting hiragana in the second character input unit 36 with a key and then converting into kanji by using kana-kanji conversion to obtain a character code (see Japanese Patent Laid-Open No. Hei 1-103787) has been used.

[0004]

However, in the above-described conventional online character recognition device having a registration function, in order to obtain character code information necessary for character registration, the user performs key input or kana-kanji conversion or There was a great operational burden of having to re-recognize handwritten characters by carefully re-inputting them.

The present invention has been made in view of such circumstances, and provides an online character recognition device having a registration function capable of surely obtaining character code information necessary for character registration by an easy operation. The purpose is to

[0006]

According to a first aspect of the present invention, a character dictionary holding dictionary data composed of characteristic data of handwritten characters and character code information and handwriting data of handwritten characters drawn by a user are extracted. Character input means, a character feature extraction means for extracting feature data of handwritten characters from the handwriting data from the character input means, and a character dictionary searched to retain the feature data that is the closest to the feature data from the character feature extraction means. Character recognition means for extracting character code information to be used, text / table creation means for creating a file of desired text data or table data containing the character code information from the character recognition means, and text data from the text / table creation means Text / table display means for displaying data or table data, and the character code information of the character selected by the user among the characters displayed by the text / table display means. And registered character selection means for outputting,
Characteristic registration means for creating new dictionary data composed of the characteristic data from the character characteristic extraction means and the character code information from the registered character selection means and registering it in the character dictionary.

According to a second aspect of the present invention, in addition to the structure of the first aspect, a registration instruction detecting means for detecting a user's instruction to register the dictionary data is provided, and when the registration instruction detecting means detects the registration instruction. In addition, the character registration means is configured to register the dictionary data in the character dictionary.
According to the invention of claim 3, in addition to the configuration of claim 2, there is provided time measuring means for measuring an elapsed time after the user selects a character to be registered, and the time measured by the time measuring means is predetermined. If the registration instruction detection unit does not detect the registration instruction before the registration waiting time is exceeded, the character registration unit registers the dictionary data in the character dictionary.

The invention of claim 4 is characterized in that, in addition to the structure of claim 3, a registration waiting time setting means is provided for the user to set the registration waiting time.

[0009]

In the first aspect of the invention, the character dictionary holds dictionary data composed of handwritten character feature data and character code information. The character input means extracts handwriting data of handwritten characters drawn by the user. The character feature extraction means extracts feature data of handwritten characters from the handwriting data from the character input means. The character recognizing means searches the character dictionary and extracts character code information holding the characteristic data most approximate to the characteristic data from the character characteristic extracting means. The text / table creation means creates a file of desired text data or table data including the character code information from the character recognition means. The text / table display means displays the text data and table data from the text / table creation means. The registered character selection means outputs the character code information of the character selected by the user among the characters displayed by the sentence / table display means.
The character registration means creates new dictionary data consisting of the feature data from the character feature extraction means and the character code information from the registered character selection means and registers it in the character dictionary.

According to the second aspect of the present invention, the registration instruction detecting means detects the instruction to register the dictionary data by the user.
The character registration unit registers the dictionary data in the character dictionary when the registration instruction detection unit detects the registration instruction. In the invention of claim 3, the time measuring means measures an elapsed time after the character to be registered is selected by the user.
The character registration means registers the dictionary data in the character dictionary unless a registration instruction is detected by the registration instruction detection means before the time measured by the time measurement means exceeds a predetermined registration waiting time.

In the invention of claim 4, the registration waiting time setting means sets the registration waiting time by the user.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a block diagram of an online character recognition device having a registration function according to an embodiment of the present invention. This online character recognition device includes a first character input unit 1, a character feature extraction unit 2, and a character recognition unit 3. A character registration unit 4, a character dictionary 5, a second character input unit 6, a sentence / table creation unit 7,
Text / table display unit 8, registered character selection unit 9, registration instruction detection unit 10, time measuring unit 11, registration waiting time setting unit 1
2 and. The first character input unit 1 generates handwriting data of a character handwritten by a user with a pen or the like and passes it to the character feature extraction unit 2. The characters include symbols. The character feature extraction unit 2 extracts the character feature data necessary for character recognition from the handwriting data from the first character input unit 1 and passes it to the character recognition unit 3 and the character registration unit 4. The character recognition unit 3 searches the character dictionary 5 to detect the character code of the dictionary data holding the character feature data that is the closest to the character feature data from the character feature extraction unit 2 and detects the character / table creation unit. Pass to 7. The character registration unit 4 creates new dictionary data composed of the character feature data from the character feature extraction unit 2 and the character code from the registered character selection unit 9, and the registration instruction detection unit 10 gives a registration instruction from the user. If detected,
Alternatively, the created dictionary data is additionally registered in the character dictionary 5 when the time measured by the time measuring unit 11, that is, the elapsed time after the user selects a character to be registered exceeds the registration waiting time. The character dictionary 5 stores dictionary data composed of character codes and character feature data. The second character input unit 6 generates a character code or a control code of a character input by the user with a keyboard or the like, and passes it to the sentence / table creation unit 7. The sentence / table preparation unit 7 prepares a sentence or a table using the character code and the control code from the character recognition unit 3 and the second character input unit 6. The text / table display unit 8 displays the text or table from the text / table creation unit 7. When the user selects one character in the sentence or table displayed by the sentence / table display unit 8 with a pointing device such as a pen or a mouse, the registered character selection unit 9 is a character code of the character. Is passed to the character registration unit 4. When the user gives a registration instruction with a pointing device such as a pen or a mouse, the registration instruction detection unit 10 detects the registration instruction and passes a detection signal to the character registration unit 4. Time measurement unit 1
1 measures the elapsed time after the user selects a character to be registered and passes the measurement result to the character registration unit 4. The registration waiting time setting unit 12 is for setting a registration waiting time which is a standard waiting time for the user to start registration with a pointing device such as a pen or a mouse.

Next, the operation of the online character recognition device having the above registration function will be described with reference to the flowchart of FIG. The user uses a pen or the like to make the first
A desired sentence or table is created by inputting handwritten characters into the character input unit 1 or inputting characters into the second character input unit 6 using a keyboard or the like. When the user inputs a handwritten character to the first character input unit 1, the first character input unit 1 generates handwriting data of the input handwritten character and passes it to the character feature extraction unit 2 (step S1). . As a result, the character feature extraction unit 2 extracts the character feature data necessary for character recognition from the handwriting data from the first character input unit 1 and passes it to the character recognition unit 3 and the character registration unit 4 (step S
2). As a result, the character recognition unit 3 searches the character dictionary 5 to detect the character code of the dictionary data holding the character feature data that is the closest to the character feature data from the character feature extraction unit 2, and the sentence / table Pass it to the creation unit 7 (step S
3).

On the other hand, when the user inputs a character to the second character input section 6, the second character input section 6 passes the corresponding character code or control code to the sentence / table preparation section 7. As a result, the sentence / table creation unit 7 creates a sentence or table using the character code or control code from the first character input unit 1 or the second character input unit 6, and passes it to the sentence / table display unit 8. (Step S
4). As a result, the sentence / table display unit 8 displays the sentence or table from the sentence / table creation unit 7 on the display screen (step S
5).

Here, for example, as shown in FIG. 3, when the user wants to register the character "mountain" written on the handwritten character input screen 23 in the sentence / table display screen 22 on the display screen 21, the sentence / table is displayed. The character "mountain" in the text displayed on the display screen 22 is selected by pointing with the pen 24 (step S6). As a result, the registered character selection unit 9 passes the character code of the character "mountain" to the character registration unit 4, and the time measuring unit 11 starts measuring time (step S7). Then, for example, as shown in FIG. 4, the user inputs the character registration instruction switch 2 in the handwritten character input screen 23.
When 5 is instructed by the pen 24, the registration instruction detection unit 10 detects it and passes the detection signal to the character registration unit 4 (step S8). As a result, the character registration unit 4 creates new dictionary data including the character feature data from the character feature extraction unit 2 and the character code from the registered character selection unit 9 and additionally registers it in the character dictionary 5 (step S9). . On the other hand, even when the user does not instruct the character registration instruction switch 25, when the time measured by the time measuring unit 11 exceeds the registration waiting time set in the registration waiting time setting unit 12 (step S1).
0), the character registration unit 4 additionally registers new dictionary data in the character dictionary 5. When it is desired to stop the registration after selecting the registered character, the character registration stop instruction switch 26 in the handwritten character input screen 23 may be indicated by the pen 24.

When it is desired to change the registration waiting time set in the registration waiting time setting unit 12, a character registration waiting time setting screen is displayed in the text / table display screen 22 by a predetermined operation as shown in FIG. 27 may be called and a desired time may be indicated by the pen 24. In this way, the character dictionary 5 that holds the dictionary data including the feature data of the handwritten characters and the character code, the first character input unit 1 that extracts the handwriting data of the handwritten characters drawn by the user, and the first The character feature extraction unit 2 that extracts the handwritten character feature data from the handwriting data from the character input unit 1 and the character dictionary 5 are searched to hold the feature data that is the closest to the feature data from the character feature extraction unit 2. A character recognition unit 3 for extracting a character code, a sentence / table creation unit 7 for creating a file of desired sentence data or table data including the character code from the character recognition unit 3, and a sentence from the sentence / table creation unit 7. A sentence / table display unit 8 for displaying data or table data, and a registered character selection unit 9 for outputting the character code of one character selected by the user among the characters displayed by the sentence / table display unit 8.
And a character registration unit 4 for creating new dictionary data consisting of the feature data from the character feature extraction unit 2 and the character code from the registered character selection unit 9 and registering it in the character dictionary 5. Since the character to be registered can be selected by pointing a single character used and displayed in the table or the table with a pointing device such as a pen or mouse,
The character code required for character registration can be reliably obtained with easy operation. Further, as in the present embodiment, the registration instruction detection unit 10 that detects the instruction to register the dictionary data by the user.
When the registration instruction is detected by the registration instruction detection unit 10, the character registration unit 4 converts the dictionary data into the character dictionary 5.
With the configuration in which the registration is performed, since the registration is performed only when the registration instruction is issued after the selection of the registered character, it is possible to favorably prevent the undesired character from being registered due to an erroneous operation. In addition, as in the present embodiment, the time measuring unit 1 that measures the elapsed time after the user selects a character to be registered.
1, the character registration unit 4 registers the dictionary data in the character dictionary 5 if the registration instruction detection unit 10 does not detect a registration instruction before the time measured by the time measurement unit 11 exceeds a predetermined registration waiting time. With the configuration, if the user does not give a registration instruction for a predetermined time, the registration operation is automatically executed, so that the operability can be further improved. Further, if the registration waiting time setting unit 12 for the user to set the registration waiting time is provided as in the present embodiment, the user can arbitrarily change the registration waiting time, so that the usability is further improved.

In the above embodiment, the user pushes the character registration instruction switch 25 in the handwritten character input screen 23 with the pen 24.
Although the registration instruction detecting unit 10 is configured to detect the registration instruction by instructing with, the user uses the pen 24 to input the character registration instruction command 28 in the text / table display screen 22 as shown in FIG. The registration instruction detection unit 10 may be configured to detect the registration instruction by drawing.

In the above embodiment, the first character input unit 1
Although the second character input unit 6 and the second character input unit 6 are provided so as to create a document or a table using both handwritten characters and key input characters, the second character input unit 6 does not necessarily have to be provided. In this case, a sentence or table is created using only handwritten characters. In the above embodiment, the character registration waiting time setting screen 2
Although the time displayed on 7 is selected by the pen 24, the desired time may be handwritten on the character registration waiting time setting screen 27 using the pen 24.

[0019]

As described above, according to the present invention, a character dictionary holding dictionary data composed of characteristic data of handwritten characters and character code information, and handwriting data of handwritten characters drawn by a user are extracted. Character input means, a character feature extraction means for extracting feature data of handwritten characters from the handwriting data from the character input means, and a character dictionary searched to retain the feature data that is the closest to the feature data from the character feature extraction means. Character recognition means for extracting character code information to be used, text / table creation means for creating a file of desired text data or table data containing the character code information from the character recognition means, and text data from the text / table creation means Text / table display means for displaying the table data and table data, and the character code of the character selected by the user among the characters displayed by the text / table display means And registered character selection means for outputting a broadcast,
Since it is provided with character registration means for creating new dictionary data composed of the characteristic data from the character characteristic extraction means and the character code information from the registered character selection means and registering it in the character dictionary, it can be used in sentences and tables. Since the characters to be registered can be selected by pointing the displayed characters with a pointing device such as a pen or a mouse, the character code information necessary for the character registration can be reliably obtained by an easy operation.

Further, a registration instruction detecting means for detecting a user's instruction to register the dictionary data is provided, and when the registration instruction detecting means detects the registration instruction, the character registration means registers the dictionary data in the character dictionary. With the configuration, the registration is performed only when the registration instruction is issued after the selection of the registered character, so that it is possible to favorably prevent the undesired character from being registered due to an erroneous operation.

Further, there is provided a time measuring means for measuring an elapsed time after the character to be registered is selected by the user,
If a registration instruction is not detected by the registration instruction detection means before the time measured by the time measurement means exceeds a predetermined registration waiting time, the character registration means registers the dictionary data in the character dictionary. If the registration instruction is not given for a predetermined time, the registration operation is automatically executed, so that the operability can be further improved.

Further, if the registration waiting time setting means for the user to set the registration waiting time is provided, the user can arbitrarily change the registration waiting time, so that the usability is further improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an online character recognition device having a registration function according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a registration operation of an online character recognition device having a registration function according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram of a registered character selection operation of the online character recognition device having a registration function in the embodiment of the present invention.

FIG. 4 is an explanatory diagram of a registration instruction operation of the online character recognition device having a registration function according to the embodiment of the present invention.

FIG. 5 is an explanatory diagram of a registration waiting time setting operation of the online character recognition device having a registration function according to the embodiment of the present invention.

FIG. 6 is an explanatory diagram of a registration instruction operation according to another embodiment.

FIG. 7 is a configuration diagram of a conventional online character recognition device having a registration function.

[Explanation of symbols]

 1 First character input unit 2 Character feature extraction unit 3 Character recognition unit 4 Character registration unit 5 Character dictionary 6 Second character input unit 7 Text / table creation unit 8 Text / table display unit 9 Registered character selection unit 10 Registration instruction Detection unit 11 Time measurement unit 12 Registration waiting time setting unit

Claims (4)

[Claims] 1. A character dictionary which holds dictionary data composed of feature data of handwritten characters and character code information, a character input means for extracting handwriting data of handwritten characters drawn by a user, and the character input means. Character feature extracting means for extracting feature data of handwritten characters from the handwriting data, and a character for extracting character code information holding the feature data most similar to the feature data from the character feature extracting means by searching the character dictionary. Recognizing means, a sentence / table creating means for creating a file of desired text data or table data including character code information from the character recognizing means, and displaying the text data or table data from the text / table creating means The text / table display means and character code information of the character selected by the user among the characters displayed by the text / table display means are output. A registered character selection unit that applies force, and a character registration unit that creates new dictionary data composed of the feature data from the character feature extraction unit and the character code information from the registered character selection unit and registers it in the character dictionary. An online handwritten character recognition device having a registration function, which is characterized by including the following. 2. A registration instruction detecting means for detecting a user's instruction to register the dictionary data is provided, and when the registration instruction detecting means detects the registration instruction, the character registration means registers the dictionary data in the character dictionary. The online character recognition device having a registration function according to claim 1, which is configured. 3. A time measuring means for measuring an elapsed time after the user selects a character to be registered, and a registration instruction detecting means until the time measured by the time measuring means exceeds a predetermined registration waiting time. The online character recognition device having a registration function according to claim 2, wherein the character registration means registers the dictionary data in the character dictionary if the registration instruction is not detected by. 4. The online character recognition device having a registration function according to claim 3, further comprising registration waiting time setting means for a user to set a registration waiting time.