JP3168793B2 - Handwritten character input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handwritten character input device using handwritten character recognition.

[0002]

2. Description of the Related Art In general, a handwritten character input device includes a handwritten character recognition means for converting handwritten data of a handwritten character into a character pattern for display, and an electronic device which the handwritten character recognition means refers to when performing handwritten character recognition. A dictionary is provided. An electronic dictionary in handwritten character recognition is a dictionary that can search for a character code by using written data of a character as an index. The electronic dictionary includes a standard dictionary stored in a non-updatable ROM and a user dictionary stored in an updatable RAM. In a handwritten character input device, when a user inputs handwritten characters to a tablet, a handwritten character recognition unit outputs a character code with reference to a standard dictionary and a user dictionary, and a character pattern is displayed on the handwritten character input device. Has become. When the recognition rate of handwritten character recognition is poor due to a habit character or the like, the problem has been solved by a method of combining handwritten writing data and a character code and registering them in a user dictionary.

[0003] The above prior art is disclosed in Japanese Patent Application Laid-Open No. 54-4199.
No. 5, JP-A-54-45262.

[0004]

In the above-mentioned conventional user dictionary for character recognition, if a character desired by the user is not in the standard dictionary, there is no method for inputting the character or there is no way to input the character. However, there is a drawback that registration of characters is required and it takes much time. For example, this registration required a procedure for drawing the character shape one dot at a time on the matrix.

According to the present invention, even if the character code of the character desired by the user is not in the standard dictionary, the character can be easily input and the character registered in the user dictionary can be input.
Handwriting that can correct patterns into beautiful characters
It is an object to provide a character input device .

In order to solve the above-mentioned problems, the present invention provides handwriting input means for inputting handwritten characters, handwritten character recognition means for converting handwritten data of characters input by the handwritten input means into character codes, A handwriting character input device comprising a standard dictionary and a user dictionary referred to by the recognition means, and a display means for displaying handwriting of characters input to the handwriting input means, a recognition result of the handwriting character recognition means, and recognition candidates; the data with character patterns for display in the set by adding a character code to have a user dictionary, as well as used as a candidate for character input and registered in the user dictionary handwriting data as a character pattern, the
Synthetic pairs from character patterns registered in the user dictionary
Select a first character and a second character to be an elephant,
Character pattern of the second character and the second character
The first character and the second character read
Are combined into one character pattern.
Can be used as a character recognition candidate
It is characterized in that registered character patterns are corrected by registering them in a user dictionary so that they can be registered.

[0007]

In the handwritten character input device, when the user wants to input a character that is not in either the standard dictionary or the user dictionary, the user starts the character registration by instructing the character registration using the processing instruction means. What is character registration?
The purpose is to register handwriting data and handwriting of characters input by the user in a user dictionary in combination with automatically assigned character codes.

The character pattern registered in the user dictionary can be corrected at any time by editing the character pattern. Character pattern editing can be executed by the processing instruction means.

When the user again inputs the same character by handwriting, the handwritten character recognizing means outputs the character code registered in the user dictionary by referring to the record registered in the user dictionary. Displays the corresponding character pattern.

According to the present invention, characters that do not exist in the dictionary can be easily registered in the user dictionary and output in a beautiful character form. With this, unique character patterns such as fonts and logos that differ from the standard that is often found in proper nouns,
Even a handwritten character input device can be easily handled.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the character input device of the present invention will be described below with reference to the drawings.

FIG. 2 is an external view of an embodiment of the present invention.
The device of the present invention is roughly composed of a main body 201 and a stylus 202. The main body 201 includes a display-integrated tablet 203, a power switch 204, and an external storage device 205 such as a floppy disk or an IC card.

FIG. 1 shows a basic block diagram of the present invention. The handwriting input unit 101 is realized by a user using a stylus 202 to input handwritten characters to the display-integrated tablet 203. Processing instruction means 10
2 is realized by various software buttons displayed on the display-integrated tablet 203. Display means 1
06 can be realized by a liquid crystal display or the like, but is realized by the display integrated tablet 203 in this embodiment. The data input from the handwriting input unit 101 is transmitted to the standard dictionary 104 and the user dictionary 1 by the handwritten character recognition unit 103.
The character code is converted to a character code with reference to the character code 05, and a character pattern corresponding to the character code is displayed on the display means 106. When the execution of the process is instructed by the process instructing unit 102, processes such as character recognition, character registration, and character editing are executed. In the character registration process, handwritten data and handwriting (character pattern) of handwritten characters are registered in the user dictionary 105 together with the automatically assigned character codes. In the character editing process, a plurality of characters are input, and the character patterns of the input characters are combined into one character pattern by the pattern conversion unit 108, and the user dictionary 1
05 is registered. The handwritten character recognizing unit 103 and the pattern changing unit 107 are software stored in a ROM in the main body 201. The standard dictionary 104 includes a main body 201.
4 is an electronic dictionary stored in a ROM in the computer. User dictionary 1
Reference numeral 05 denotes an electronic dictionary stored in the RAM in the main body 201. The user dictionary 105 may be a floppy disk or an IC card of the external storage device 205.

FIG. 3 shows an example of an input screen display according to the present invention. On the input screen, there are an edit document display area 301, a character input display frame 302, a recognition button 303, a registration button 304, and a character pattern edit button 305. Edited document display area 3
An area 01 displays a text input by the user and edits the text. The character input display frame 302
This is an area in which the user inputs a desired character by handwriting with the stylus 202 and displays the result of character recognition in the one frame. Recognition button 303 is processing instruction means 1
02 is a software button to be pressed by the stylus 202 when a character input by the user into the character input display frame is converted into a character pattern and input into the edited document display area. The registration button 304 is one of the processing instruction units 102 and stores characters handwritten by the user in the user dictionary 105.
Is a software button to be pressed by the stylus 202 when the user wants to register the information. The character pattern edit button 305 is one of the processing instruction units 102 and is a software button pressed by the stylus 202 when the user wants to edit a registered character.

FIGS. 4 to 6 show the procedure when the user inputs a character in the edited document display area 301, taking "large" as an example. First, as shown in FIG. 4, "large" is handwritten on one of the character input display frames 302 with the stylus 202,
The recognition button 303 is pressed with the stylus 202 as shown in FIG. Then, the handwritten “large” is converted into a character pattern as shown in FIG. 6, and is displayed in the edited document display area 301 together with the handwritten “large” of the character input display frame 302.

FIG. 7 shows a screen display example of the character registration system of the present invention.
To FIG. As shown in FIG. 7, a character to be registered with the stylus 202 is handwritten on one of the character input display frames 302, and as shown in FIG.
By pressing 4, a character registration is instructed. Then, the handwritten character is automatically assigned a new character code and registered in the user dictionary 105. As shown in FIGS. 10 to 12, the registered character is referred to from the user dictionary 105 when the next handwritten character is input,
Output as character recognition candidates. As a result, it is possible to input characters that are not in the standard dictionary 104. In addition, it is difficult to write pictures and character marks in exactly the same form by handwriting, but using this registration method allows the user to always enter the same form, which is very convenient.

There may be a case where the registered characters are desired to be displayed in a clean state. For this reason, in the present embodiment, a method of correcting a character pattern of a character registered in the user dictionary by using a combination of a plurality of existing character patterns is realized. In the present embodiment, input using a handwritten character recognition unit is used as a method for calling a registered character or an existing character pattern, thereby reducing the labor required for the input operation of the user.

FIGS. 13 to 35 show examples of screen display when a registered character is corrected by combining two characters. First, as shown in FIG. 13, a character editing button 304 is pressed with the stylus 202 to instruct a character pattern editing. Then, an edit target character input screen is displayed as shown in FIG. On the screen, there are an edit target character input display frame 1401, a recognition button 1402, and an enter button 1403. One of the processing instructing means 102 and one of the processing instructing means 102, as shown in FIG. 15, a stylus 202 is used to hand-write a registered character to be edited in an editable character input display frame 1401, and FIG. When the recognition button is pressed as shown in FIG. 17, the registered characters to be edited are displayed in the edit target character input display frame 1401 as shown in FIG. When the enter button 1403 is pressed as shown in FIG. 18, a screen for selecting the number of characters to be combined is displayed as shown in FIG. The synthesis target character number selection screen includes a synthesis target character number display 1901. As shown in FIG. 20, the stylus 20
By directly instructing in step 2, the number of characters to be combined is determined. When the number of characters to be combined is determined, a character pattern editing screen is displayed as shown in FIG. The character pattern editing screen has a combination target character input display frame 2101, a recognition button 2102, a character move button 2103, and a character enlargement / reduction button 2104 for the number of characters to be combined, and a registered character display frame 2105, a combination button 2106, and an end. There is a button 2107. In the registered character display frame 2105, characters registered in the user dictionary 105 to be edited are displayed. The synthesis target character input display frame 2101 is an area for inputting a synthesis target character and displaying a correction result for the synthesis target character. The recognition button 2102 is one of the processing instruction units 102 and is a software button pressed by the stylus 202 when recognizing a character to be combined. The character move button 2103 is one of the processing instruction means 102, and is used to change the position of the stylus 2
02 is a software button pressed. The character enlargement / reduction button 2104 is one of the processing instruction means 102, and is used to change the size of the character to be combined with the stylus 202.
Press the software button. Registered character display frame 21
An area 05 displays characters to be registered in the user dictionary 105. The synthesis button 2106 is used for the processing instruction unit 102
And a software button pressed with the stylus 202 when combining characters to be combined. The end button 2107 is one of the processing instruction units 102 and is a software button pressed by the stylus 202 when ending the character editing. When a character to be synthesized is handwritten with the stylus 202 in the character input display frame 2101 as shown in FIG. 22 and the recognition button 2102 is pressed with the stylus 202 as shown in FIG. 23, the character input display frame 21 as shown in FIG.
01 shows the recognition result. Input and recognition processing of all the characters to be synthesized are similarly repeated as shown in FIGS. When the position of the character to be combined is to be changed, the character movement button 2103 is pressed with the stylus 202 as shown in FIG. 27, and the character to be combined can be moved with the stylus 202 as shown in FIGS. When the character enlargement / reduction button is pressed with the stylus 202 as shown in FIG. 30, the size of the character to be synthesized can be changed with the stylus 202 as shown in FIGS. When the user presses a composition button 2106 as shown in FIG. 33, the composition result is displayed in the registered character display frame 2105 as shown in FIG.
End button 2105 with stylus 202 as shown in FIG.
When the end of character registration is instructed by pressing, the character displayed in the registered character display frame 2105 is registered in the user dictionary 105. As shown in FIG. 36 to FIG. 38, from the next time, a beautiful edited character becomes a candidate for character recognition in response to handwriting input. In addition, display and printing of characters having the same character code in a document that has already been created are performed using edited beautiful characters.

FIG. 39 shows the data structure of the standard dictionary 104. One record of the standard dictionary 104 includes a writing data area 3901, a character pattern area 3902, and a character code area 3903. Writing data area 39
01 stores the starting point, direction, end point, and the like, which are the writing data of the characters. Here, a bit pattern may be stored in the handwriting data area 3901. Character pattern area 3
Reference numeral 902 stores a character pattern to be displayed on the screen as a bit pattern. Here, the character pattern may be stored as vector data. The handwritten character recognition unit 103 outputs the record of the writing data closest to the input as the first candidate for character recognition. Reference numeral 3904 denotes an example of a record of a character “large”, and reference numeral 3905 denotes an example of a record of a character “mountain”.

FIG. 40 shows the data structure of the user dictionary 105. The structure of the user dictionary 105 is the same as the standard dictionary. Reference numeral 4001 denotes an example of a record of a handwritten character. A handwriting data area 3901 contains handwritten character handwriting data, a character pattern area 3902 contains handwritten character handwriting, and a character code area 3903 is a character code area automatically assigned. Is stored. 4002 is 4001
This is an example of a record after the character pattern editing has been performed on the record No. 3, in which the writing data area 3901 and the character code area 3903 are the same as 4001,
In the area 02, a beautiful synthesized character pattern is stored.

Next, a processing flow will be described with reference to FIG.

When the power is turned on by pressing the power switch 204, the entire system is initialized in step 4101. In step 4102, it is determined whether or not an input has been made in the character input display frame 302. If it is determined in step 4102 that the input has been performed on the character input display frame 302, the data input in step 4103 is passed from the handwriting input unit 101 to the handwritten character recognition unit 103,
In steps 4104 and 4106, it is determined which of the recognition button 303 and the registration button 304 has been pressed. If it is determined in step 4104 that the recognition button 303 has been pressed, in step 4105 the character recognition means 103 executes character recognition processing of the input character with reference to the standard dictionary 104 and the user dictionary 105. After the end of step 4105, the process returns to step 4102. If it is determined in step 4106 that the registration button 304 has been pressed, a new character code is automatically assigned to the input character in step 4107, and handwriting data and handwriting of the input character are automatically assigned in step 4108. It is registered in the user dictionary 105 together with the obtained character code. After the step 4108 ends, the process returns to the step 4102. If it is determined in step 4102 that no input has been made in the character input display frame 302, it is further determined in step 4109 whether the character pattern edit button 305 has been pressed. If it is determined in step 4109 that the character pattern editing button 305 has been pressed, a character editing process described later is executed in step 4109, and step 41
Return to 02. If it is determined in step 4108 that the character pattern edit button 305 has not been pressed, the process returns to step 4102.

The processing flow of character pattern editing will be described with reference to FIG. In step 4201, a character to be combined is input. The input method of the character to be synthesized is as follows. The character to be synthesized is handwritten in the character input display frame for synthesis 1401, the recognition button 1402 is pressed to recognize the handwritten character to be synthesized, and the enter button 1403 is pressed to determine the character to be synthesized. I do. Next, in step 4202, the number of characters to be synthesized display 1901 is instructed to select the number of characters to be synthesized. Then, the character editing screen of FIG. 21 is displayed. Step 420
3, step 4205, step 4207, and step 4
In step 209 and step 4211, it is determined at which position on the character editing screen the input has been made, and the processing to be executed is determined according to the position. If it is determined in step 4203 that the input has been made in the synthesis target character input display frame 2101, a character input process is executed in step 4204. Step 420
If it is determined in step 5 that the recognition button has been pressed, in step 4206 the handwritten character recognition unit 103
4 and the user dictionary 105 to perform character recognition processing of the character to be synthesized. At this time, the character pattern 3902 of the recognition result is passed from the standard dictionary 104 or the user dictionary 105 to the pattern conversion unit 108. In step 4207, the character move key 2103 or the character enlargement / reduction button 210
If it is determined that 4 has been pressed, in step 4208, the pattern conversion unit 108 changes the character pattern of the character to be combined. If it is determined in step 4209 that the synthesis button 2106 has been pressed, in step 4210 the pattern conversion means 108 synthesizes the character patterns of all the characters to be synthesized, and the synthesis result is the registered character display frame 2105
Will be displayed. If it is determined in step 4211 that the end button has been pressed, the synthesis result is registered in the character pattern area 3902 of the user dictionary 105 in step 4212. Here, as a means to correct the character pattern,
Correction means for each dot may be added.

As described above, the character input device of the present embodiment allows the user to freely input characters, and further enables free text input.

[0025]

According to the handwritten character input device, the user can freely input desired characters even if the characters are not in the dictionary, and furthermore, the characters can be easily formed into a beautiful character shape.

[Brief description of the drawings]

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

FIG. 2 is an external view of the present invention.

FIG. 3 is a diagram showing a display example of an input screen.

FIG. 4 is a diagram showing a display example of an input screen.

FIG. 5 is a diagram showing a display example of an input screen.

FIG. 6 is a diagram illustrating a display example of an input screen.

FIG. 7 is a diagram showing a display example of an input screen.

FIG. 8 is a diagram showing a display example of an input screen.

FIG. 9 is a diagram showing a display example of an input screen.

FIG. 10 is a diagram showing a display example of an input screen.

FIG. 11 is a diagram showing a display example of an input screen.

FIG. 12 is a diagram showing a display example of an input screen.

FIG. 13 is a diagram illustrating a display example of an input screen.

FIG. 14 is a diagram illustrating a display example of an input screen.

FIG. 15 is a diagram illustrating a display example of an input screen.

FIG. 16 is a diagram showing a display example of an input screen.

FIG. 17 is a diagram illustrating a display example of an input screen.

FIG. 18 is a diagram illustrating a display example of an input screen.

FIG. 19 is a diagram illustrating a display example of an input screen.

FIG. 20 is a diagram illustrating a display example of an input screen.

FIG. 21 is a diagram illustrating a display example of an input screen.

FIG. 22 is a diagram illustrating a display example of an input screen.

FIG. 23 is a diagram showing a display example of an input screen.

FIG. 24 is a diagram showing a display example of an input screen.

FIG. 25 is a diagram illustrating a display example of an input screen.

FIG. 26 is a diagram showing a display example of an input screen.

FIG. 27 is a diagram illustrating a display example of an input screen.

FIG. 28 is a diagram illustrating a display example of an input screen.

FIG. 29 is a diagram illustrating a display example of an input screen.

FIG. 30 is a diagram illustrating a display example of an input screen.

FIG. 31 is a diagram illustrating a display example of an input screen.

FIG. 32 is a diagram showing a display example of an input screen.

FIG. 33 is a diagram showing a display example of an input screen.

FIG. 34 is a diagram illustrating a display example of an input screen.

FIG. 35 is a diagram showing a display example of an input screen.

FIG. 36 is a diagram showing a display example of an input screen.

FIG. 37 is a diagram illustrating a display example of an input screen.

FIG. 38 is a diagram illustrating a display example of an input screen.

FIG. 39 is a data structure diagram of a standard dictionary.

FIG. 40 is a data structure diagram of a user dictionary.

FIG. 41 is a processing flowchart of character input.

FIG. 42 is a processing flowchart of character editing.

[Explanation of symbols]

 101: handwriting input means, 102: processing instruction means, 103: handwritten character recognition means, 104: standard dictionary, 105: user dictionary, 106: display means, 107: pattern changing means.

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jun Ito 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Pref. Hitachi Media Works, Ltd. (56) References JP-A-57-105090 (JP, A) JP-A-57-30087 (JP, A) JP-A-59-208639 (JP, A) JP-A-61-6779 (JP, A) JP-A-59-5390 (JP, A) JP-A-3-121488 (JP JP, A) JP-A-61-20981 (JP, A) JP-A-58-191027 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06K 9/03-9/68

Claims (3)

(57) [Claims] 1. Handwriting input means for inputting handwritten characters,
Handwritten character recognition means for converting handwritten data of characters input by the handwriting input means into a character code; a standard dictionary and a user dictionary referred to by the handwritten character recognition means; and handwriting of characters input to the handwritten input means And a handwritten character input device including a display unit for displaying a recognition result and a recognition candidate of the handwritten character recognition unit. The handwritten data is registered as a character pattern in the user dictionary and used as a candidate for character recognition .
The first character and the
2 and select the first character and the second character
Character pattern by character recognition processing
By combining the character patterns of the first character and the second character
One character pattern and this combined character pattern
Is registered in the user dictionary so that it can be used as a character recognition candidate
A character pattern registered in the handwritten character input device. 2. The handwritten character input device according to claim 1,
A handwritten character input device, wherein a character to be combined can be enlarged or reduced or a position of a character to be combined can be changed. 3. The handwritten character input device according to claim 1,
A handwritten character input device capable of designating the number of characters to be synthesized.