JPH01103787A - Device for recognizing handwritten character with personal dictionary preparing function - Google Patents

Abstract

PURPOSE:To obtain a character code to be a recognized result as the code of a character to be registered by using a standard dictionary to be set in advance in a recognizing device or a personal dictionary to be already registered and carefully hand-writing the character which is desired to be registered. CONSTITUTION:A user selects the 'recognization' of a menu 3 on a tablet 2 with a pen. Then, when the character, which is desired to be registered, is written to a character input area 4, the tablet 2 transfers writing data to an input stroke processing part 5. The processing part 5 executes character recognization with a pattern matching system and the character code of the recognized result is stored. Then, the recognized result is displayed to a display device 8 with a font. The user observes this display, and when it is the purposed character and the 'registration' of the menu 3 is selected with the pen, a menu processing part 6 executes the registration processing of this character to a personal pattern dictionary B6. Thus, in case of character code designation concerning personal dictionary registration, the user is not needed to investigate a character code table and operability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to handwriting recognition technology, and particularly to a character recognition device with a personal dictionary creation function suitable for processing Japanese documents.

[Conventional technology]

The conventional method closest to the invention in JP-A-55-135973 has a function of creating a personal dictionary for recognition online by inputting a character code, as described in JP-A-55-135973. Ta.

[Problem to be solved by the invention]

However, the user has to look up a code table in advance and enter the character code of the character he or she wants to register from a keyboard or key menu, and no consideration has been given to the point of interaction.

An object of the present invention is to provide a character recognition device that allows a user to easily create a personal dictionary by providing a means for easily obtaining the character code of a character that the user wants to register without having to look up a code table in advance.

[Means to solve the problem]

The above object is achieved by using the following means in a method for inputting registered character codes when creating a personal dictionary. In other words, ■ Using a standard dictionary preset in the recognition device or a personal dictionary that has already been registered, carefully handwrite the character you want to register, and then match the character code that is the recognition result with the code of the character you want to register. do.

■Enter the reading of a character using the character menu or character recognition, and select the code of the character you want to register above from the character string list displayed based on the kana/kanji conversion result of the reading or the character corresponding to the reading. Let the code be .

[Effect]

In case 1 above, the character recognition result is one-on-one with the input character.
It is a character code corresponding to , and can be used as it is as a character code for personal dictionary registration. On the other hand, in case 2 above, if the code corresponding to each displayed character in the displayed character string list matches the character code used for recognition,
It can be used as is as a character code for personal dictionary registration. If these do not match, there is no problem if you perform appropriate code conversion and use the result as the character code for personal dictionary registration.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 23.

FIG. 1 shows a character recognition device with a personal dictionary creation function that includes the present invention. This device includes an input integrated display device 2 and 8, an input stroke processing section 5, which includes a character recognition means. Menu processing section 6. Standard dictionary for recognition 7, personal dictionary B5. This is a character recognition device consisting of a personal font B6 for display and a standard font B7. The input/integrated display devices 2 and 8 have a structure in which a transparent tablet 2 and a display device 8 are overlapped, and realize an electronic paper and pen.

Here, the personal dictionary B5 and the personal font B6 for display are
are registered on the RAM card, and the input display devices 2 and 8. Menu processing section 6. Standard dictionary for recognition7. It may be detachable from a character recognition device consisting of standard font B7.

The basic operation of this device is as shown in Figure 2.
When menu 3 above is selected with a pen, menu processing 6 is started and the data processing mode and transfer direction are set. When handwriting is input into the character input area 4 on the tablet 2, an input stroke process 5 is activated. For example, [Recognition] in the menu
When selecting , the menu processing unit 6 sets the recognition mode and the direction of transfer to the display device 8 . Input stroke processing section 5
recognizes the next handwritten input and transfers the recognition result to the display device 8 for display.

Next, the personal dictionary creation function according to the present invention will be explained in detail according to the procedure for creating a personal dictionary.

0 Enter the code of the character you want to register as an individual.

When the character ``['' is selected in the menu area 3 shown in FIG. 20(a), the information is transferred to the menu processing section 6 through the signal line 31 shown in FIG. The menu processing section 6 is the third
As shown in the figure, set the code input mode (process 6-2
00).

The code input setting process 6-200 sets the mode register M to "1" as shown in FIG. 4 (process 6-201).
, initializes each register, flag, buffer, etc. for creating a personal dictionary (process 6-202), and transfers the message to the input integrated device (process 6-203). The above initialization process 6-202 turns off the registration flag P FLAG indicating whether or not one personal dictionary is being created as shown in FIG. Character input flag indicating presence or absence of character input CF L A G 1-
The CFLAG4 is turned off, the contents of the pattern buffer B3 (FIG. 15) storing the pattern data of the input characters in each frame are erased, and the code register C0DE REG storing the registration character code is set to 0.

Next, as shown in FIG. 20(a), the user writes down the character registration that he/she wants to register in the lower right frame.Then, the tablet 2 shown in FIG. Transfer to Section 5.

The input stroke processing unit 5 performs processing 5= as shown in FIG.
At step 100, character recognition is executed. Character recognition processing 5-1
00, as shown in FIG. 9, first, if the input writing data is longer than the preset length TH and the value of the mode register M is not 1'2'', a character cutout determination is performed.

In the character cutting process, the completion of inputting one character is determined by moving the frame of the pen as shown in Japanese Patent Publication No. 52-15187, or by elapse of a certain period of time after inputting the last handwritten data. That is, if the handwritten data that are input one after another are within the same frame, in step 5-105, the input incomplete flag NF is turned on and the recognition process is not executed.On the other hand, if the pen has moved to another frame, Alternatively, recognition processing 5-101 is executed when a certain period of time has elapsed after inputting the last handwritten data.

The recognition process 5-101 is, for example, disclosed in Japanese Patent Application Laid-Open No. 59-12868.
This is realized by a pattern matching method as shown by 0, and the resulting character code is stored in the code section of frame 4 of the code buffer Bl (Fig. 13) in process 5-102, and a flag indicating that it has been input is set. Turn on N4. next,
The contents of the frame 4 are passed to the code creation process 5-300 shown in FIG. 8 in accordance with the value "1" of the mode register M set by the menu processing section 6. The processing 5-3
00, according to the input of the "character", the frame 4 is
The contents of are stored in the code register CODE REG. Here, the frame refers to four frames within the character input area 4.

At this time, as shown in FIG. 20(b), the above C0DE
The character code stored in REG is displayed in font on the display device 8. The user looks at this display and, if it is the desired character, selects the "Register" menu shown in the figure. Then, the menu processing section 6 executes a registration process 6-500 as shown in FIG.

Process 6-500 is the code register C0DE-RE.
If the code stored in G is not within the preset code range, execute warning process 6-506 in FIG.
Prompt the user to re-enter. On the other hand, if it is within the preset code range, the registration flag P FLAG is turned on. At this point, the code input process is complete.

As a method of specifying registered character codes other than those shown above,
There are two methods below.

1. The user inputs the pronunciation of the registered characters by handwriting, using keys, or using the menu, converts this into kana/kanji, displays a group of target characters, and selects the desired character from among them.

2. In addition, if the display character information in the device is stored in the reading order of the characters, the user inputs the reading of the registered characters by hand, with a key, or from the menu, and the characters corresponding to the reading are displayed in order. to select the desired character.

It is obvious that it is possible to specify a character code corresponding to a desired character using methods 1 and 2 above. For example, in case 1 above, first, as shown in FIG. 23(a), the "conversion" mode is selected when registering a character code, and then the reading of the character to be registered is handwritten. At this time, the system recognizes the input reading patterns one after another and displays the kanji etc. corresponding to the recognition results. The registrant selects one character from the displayed group of characters ((b) in the same figure) and presses the registration menu to complete character code input.

0Create a personal font.

If the user wants to change the display font, they can register the font that corresponds to the character code set above.
It can be linked to the recognition pattern set in the next step ■. That is, in FIG. 21(a), menu area 3
When "Font" is selected, the menu processing unit 6 sets the font creation mode (processing 6-400) as shown in FIG.
)do.

As shown in FIG. 6, the process 6-400 sets the mode register M to 3''' if the registration flag P FLAG is on.
Then, the display shown in FIG. 21(a) is performed.

Next, the user selects "" in the menu area 3 of FIG. 21(a).
If you select "Pen" or "Eraser", you can create a font as shown in the figure. In other words, the input stroke processing section 5
The font creation process 5-500 in FIG. 8 is executed. As shown in FIG. 11, the process 5-500 writes black writing '1' or white writing '0' to the bit corresponding to the input of the font buffer B4 as shown in FIG. 16, for example.

After creating a font, when "Register" is selected, the menu processing unit 6 executes font set processing 6-505 in FIG. 7. The process 6-505 turns on the font flag F in FIG. 17, and transfers the contents of the code register 12=star C0DE REG and the contents of the font buffer as shown in FIG. 16 to the personal font buffer as shown in FIG. Add it to B6 and increase the number of registered fonts FC by 1. This completes the registration of personal fonts.

■Enter your personal pattern.

Next, a method for registering patterns used for recognition will be described.

As shown in FIG. 22, the user selects "pattern" in menu area 3. Then, the menu processing section 6
In the figure, pattern input mode setting (process 6-300) is executed. The process 6-300, as shown in FIG.
If the registration flag P FLAG is on, that is, if the code input has been completed, the mode register M is set to "2" and the screen as shown in FIG. 22 (,) is displayed.

The user inputs the character pattern of the individual he or she wishes to register into the four frames (up to four patterns) in the lower character input area 4.

FIG. 22(a) shows a case where two types of character patterns are input. In this embodiment, up to four patterns can be input, but the number of input frames may be changed.

When a character pattern is input, the input stroke processing 5 executes the recognition processing 5-100 for each input frame, and then performs the pattern creation processing 5-400.

In the process 5-400, as shown in FIG.
(Figure). Next, the recognition data corresponding to the inputted character pattern is stored in the pattern buffer B3 (FIG. 15) together with the number of input strokes N.

Next, the degree of stability with which the input character pattern can be recognized is determined by probability calculation (process 5-403).

Here, in the process 5-403, for example, as shown in FIG. 19, if the value obtained by dividing the distance value of the first candidate of the stored similar characters by the number of strokes N of the above-mentioned Kabataan is 0, the probability is 50.
%, if it is 100 or more, it is set as 100%. This method
In this method, the distance value per stroke is calculated from the candidate registered dictionary pattern and the input cover pattern, and the probability of the character pattern that is currently being registered is estimated from this distance value.

The above similar characters and probabilities are displayed as shown in FIGS. 22(a) and (b). As another probability display method, a summary may be displayed in Japanese corresponding to the probability as shown below.

1) Dangerous (50-60%) 2) Very dangerous (60-70%) 3) Fair (70-80%) 4) OK (8Q-9Q%) 5) Perfect (90% or more) Based on this information, if the user wishes to cancel the input cover turn, he or she can touch the character input frame shown in FIG. 22 with a pen. At this time, Fig. 8 recognition process 5-100
At the beginning of the determination in FIG. 9, clearing of the pattern buffer is executed in process 5-104. That is, the process 5-10
4 erases the contents of the pattern buffer B3 corresponding to the input frame.

If the user agrees to the above similar characters and probability, the second
When "Register" is selected as shown in FIG. 2(b), the input pattern is registered in a personal dictionary structured as shown in FIG. 17. That is, by selecting 'Register', menu process 6 executes registration (process 6-500). Process 6-500 corresponds to mode register M=2 in FIG. 7, and executes pattern set process 6-503. and turn off the registration flag (processing 6-504).The above pattern set processing 6-503
reads the beginning of the registered pattern with the number N of strokes at the beginning of the personal dictionary B3 according to the number of input strokes N corresponding to each frame of the pattern buffer B3, and inserts pattern data and font flags for each frame of the pattern buffer B3. Then, add 1 to the number of registered characters NC. For example, if the registered character code is within the code range of the standard font, "1" is set in the font flag if it matches the code of the personal font. Here, the font flag is a flag for specifying whether the display device 8 uses a pre-registered standard font or the personal font when displaying characters.

According to this embodiment, the creation of a personal dictionary and a personal font can be achieved entirely by handwritten input, resulting in uniform operability and good man-machine performance.

〔Effect of the invention〕

According to the present invention, with regard to personal dictionary registration, when specifying a character code, the user does not have to look up a character code table each time, resulting in improved operability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a handwritten character recognition device with a personal dictionary creation function that includes the parts of the present invention, FIG. 2 is a main flowchart of the handwritten character recognition device, FIGS. 3, 4 to 7, Figure 12 is a flowchart diagram of the menu processing section;
11 is a flowchart of the input stroke processing section, FIGS. 13 to 18 are configuration diagrams of various buffers used in the embodiment of the present invention, FIG. 19 is a similarity evaluation function, and FIG.
FIG. 23 is a diagram illustrating an example of screen display and operation in the embodiment of the present invention. 5... Input stroke processing, 6... Menu processing,
7... Standard pattern dictionary, 8... Display device, B5.
...Personal pattern dictionary, B6...Personal font.

Claims (1)

[Claims] 1. An input means capable of performing handwritten input in chronological order and handwritten input data inputted by the input means are compared with a preset standard dictionary and the most similar character pattern is recognized. In a character recognition device having a character recognition means and a display means for selecting and displaying a display font corresponding to the recognized character pattern, when registering a personal dictionary, a character to be registered is input by hand, and the character recognition means , Comparing the handwritten input data of the character to be registered with the standard dictionary, recognizing similar character patterns, and setting the code of the recognized character pattern as the character code of the character to be registered. Functional handwritten character recognition device. 2. an input means capable of performing handwritten input in chronological order; a character recognition means for comparing the handwritten input data inputted by the input means with a preset standard dictionary and recognizing the most similar character pattern; In a character recognition device having a display means for selecting and displaying a display font corresponding to a recognized character pattern, when registering in a personal dictionary, the reading of the character to be registered is handwritten input, and the character recognition means reads the input character. Recognize the handwritten input data of the reading and display the corresponding one or more characters, select the character to be registered from the plurality of displayed character groups, and register the character code of the selected character. A handwritten character recognition device with a personal dictionary creation function characterized by character codes of characters. 3. an input means capable of performing handwritten input in chronological order; a character recognition means for comparing the handwritten input data inputted by the input means with a preset standard dictionary and recognizing the most similar character pattern; A character recognition device having a display means for selecting and displaying a display font corresponding to a recognized character pattern, a key input means for inputting the reading of a character to be registered, and a kanji character corresponding to the reading of the character inputted by the key. When registering in a personal dictionary, input the reading of a character to be registered using the key input means, and convert a plurality of kanji corresponding to the reading of the character by the kana/kanji conversion means. A personal dictionary creation function characterized by displaying the character on a display means, selecting the character to be registered from the displayed plurality of kanji groups, and setting the character code of the selected character as the character code of the character to be registered. Handwritten character recognition device. 4. an input means capable of performing handwritten input in chronological order; a character recognition means for comparing the handwritten input data inputted by the input means with a preset standard dictionary and recognizing the most similar character pattern; In a character recognition device having a display means for selecting and displaying a display font corresponding to a recognized character pattern, a character to be registered is handwritten, and the handwritten input data is compared with a standard dictionary. The code of the most similar character pattern among them is set as the character code of the character to be registered, and the character code and
A handwritten character recognition device with a personal dictionary creation function, characterized in that a personal dictionary storing personal character patterns handwritten when setting the character code is registered and held on a RAM card. 5. an input means capable of performing handwritten input in chronological order; a character recognition means for comparing the handwritten input data inputted by the input means with a preset standard dictionary and recognizing the most similar character pattern; In a character recognition device having a display means for selecting and displaying a display font corresponding to a recognized character pattern, the character recognition means may input a character to be registered by handwriting when specifying a character code at the time of personal dictionary registration. , a handwritten character recognition device with a personal dictionary creation function, characterized in that it recognizes a character pattern in the standard dictionary that corresponds to the handwritten character pattern.