JP3376808B2 - Word input device and word input method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a word input device and a word input method used in a pen computer or the like for inputting a word by using a part or all of the characters forming the word as keys.

[0002]

2. Description of the Related Art In online character input in which characters are input to a pen computer using a pen and a tablet as input means, the method for the user to input characters is as follows: (1) Display a screen keyboard on the pen computer A method of inputting characters by touching a key on the screen keyboard using (2) A method of recognizing a character image handwritten by a user on a pen computer using a character recognition method and converting it to a character code, (3) There is a method of inputting Hiragana by the character recognition method and then converting the Hiragana into Kanji by the Kana-Kanji conversion method. Each of these methods has its disadvantages: (1) makes it difficult to input Chinese characters, and it becomes difficult to input when the size of the tablet is small, and (2) makes writing characters by using the keyboard. Compared to the above, (3) is inferior in speed and efficiency, and in (3) all characters must be input even when converting to Kanji using Hiragana. In particular, there are homonyms in Japanese, so Kanji candidates There is a problem that it takes time to select. As a method of alleviating the problem (2) in this input method, a method of predicting and displaying a word input by the user from a character string being input is considered. The operation of the conventional device for predicting a word from an input character described in Japanese Patent Laid-Open No. 7-92095 will be described below.

FIG. 39 is a functional block diagram for explaining the configuration of the on-line handwritten character device disclosed in Japanese Patent Laid-Open No. 7-192095. In FIG. 39, 102 is an input means for collecting and inputting coordinate data of written characters by a combination of a stylus pen and a tablet, 103 is a feature amount extracted from the input coordinate data collected by the input means 102, and a standard pattern stored in advance. A character recognition unit that performs matching and uses the code with the highest similarity as a character recognition result, 104 is a word search unit that searches the word dictionary 106 using the result of the character recognition unit 103 as a key, and outputs a predicted word, and 106 is a word Stored word dictionary, 107
Is a dictionary for storing standard patterns used by the character recognition means 103, 101 is a different color or display position so that the input character string input from the character recognition means 103 and the predicted character string input from the word search means 104 can be distinguished. Display control means for controlling display using 105, and 105 is a display means for displaying candidate characters and candidate words on the screen in accordance with instructions from the display control means 101.

FIG. 40 shows the contents of the word dictionary 106, and FIG. 41 shows a character input screen. In FIG. 41, 10 is a character frame in which characters are entered.

Next, the operation will be described. First, the user writes the first character of the word intended for writing in the character frame 10 in FIG. Now, the user intends to input the word "training" and manually inputs the first character "to" 108. Input means 102
Holds the coordinate data written by the user in a buffer (not shown) and outputs it to the character recognition means 103. Character recognition means 103
Extracts the feature amount from the input coordinate data, and the character recognition dictionary 10
7 is compared with the standard pattern data in 7 and the character code with the highest similarity is displayed as the recognition result.
And output to the word search means 104. The word search means 104 searches the word dictionary 106 for a word in which the input character and the first character match, and outputs the difference between the obtained candidate word and the input character to the display control means 101. For example, in the word in FIG. 40, since the first character of "toaster" and the input character "to" match, the word search means 104 outputs "-star" in which "to" is deleted from "toaster". Hereinafter, the search is repeated from the word dictionary 106, and the difference between the candidate word and the input character is output to the display control means 101. The display control means 101 is the character recognition means 10
The character code “TO” received from 3 and the character code “-STAR” below the word received from the word search means 104 are controlled to be displayed at different positions so that they can be distinguished.
The display means 105 outputs the result according to the instruction from the display control means 101. FIG. 42 shows the result of the display means 105 displaying characters. “TO” 109 is a character code received from the character recognition means 103, and 110 is a word searched by the word search means 104.

Here, the user intends to input "training", but since there are many candidate words starting with "to", it takes time to select the target "training". Then, by entering the character following "to", the candidate words are narrowed down to facilitate the selection.
FIG. 43 shows an example in which the user continues to input characters. The user writes “LE” 111 as a character following “TO” 109. The character recognition means 103 performs character recognition using the input data of “LE” 111 output by the input means 102, and outputs the recognition result to the display control means 101 and the word search means 104. Word search means 104
Searches the word dictionary 106 for the input character "Tre" and outputs the corresponding character string to the display control means 101 as in the previous case. The display control means 101 outputs the character string to the display means 105 in the same manner as described above, and the display means 105 displays the recognition result of "re" and the candidate character string. FIG. 44 shows an example in which the recognition result and candidate character strings are displayed. This time, the number of corresponding candidate characters is smaller than that in FIG. 42, so the user selects the intended word character string.

[0007]

In the conventional word input device as described above, when the number of words in the word dictionary becomes huge,
Since the number of words that are candidates for character prediction increases, it takes time for word prediction processing, and it takes time to select a word intended by the user from the displayed candidate word group. Therefore, in order to reduce the number of candidate words, that is, to shorten the time for the user to select an intended word string, the user needs to enter more character strings as described in the conventional example.

Although not described in the above-mentioned conventional example,
As one of the solutions when the number of word candidates to be searched increases as the number of words in the word dictionary increases, there is a method of outputting a specific word with priority by using priority and frequency information. However, this method requires a task such as setting a priority for a word, which is a troublesome task. In addition, when the number of words with the increased priority increases, the value of the priority itself is diminished, and the advantage of the priority is impaired. Similar to the priority, the frequency information has a problem that if the number of words having high frequency information increases, the advantage of the frequency information is lost, and as a result, words cannot be input quickly.

Although not described in the above-mentioned conventional example, when a user registers a word in the word dictionary in order to enhance the word dictionary, if a character non-character recognition target character exists in the registered word, the recognition target character There is a problem that registered words are not output because external characters cannot be input using the character recognition means. The present invention has been made to solve the above problems, and an object thereof is to obtain a word input device and a word input method that have a high word input speed and can easily select a candidate word.

[0010]

In a word input device according to the present invention, an input means for acquiring coordinate data of a part or all of characters forming a word and a character for storing a standard pattern of a plurality of characters in advance. A recognition dictionary, a character recognition means for recognizing a character based on the coordinate data and the standard pattern, and outputting as a character code, and a word length determination means for determining a word length based on word length information input from the outside. A word dictionary that stores a plurality of words in advance, a word search unit that searches the word dictionary for a word that includes the character code and has the word length, and a word searched by the word search unit as a word candidate And a display unit for displaying one or more, selecting a word from the word candidates displayed by the display unit based on an instruction from the outside, and inputting the sentence. And outputs it as a word corresponding to the column. Here, the selection made by this word input device includes not only selecting a plurality of word candidates displayed by the display means but also selecting the word candidate when only one word candidate is displayed. Be done.

[0011]

Further, the input means includes a character frame for inputting a part or all of characters forming a word, a word length designating character frame corresponding to the character frame on a one-to-one basis, and handwriting Coordinate acquisition means for acquiring coordinate data, and the word length determination means determines the word length based on the coordinate data of the handwriting input in the word length designation character frame.

Further, based on the input means for acquiring the coordinate data of some or all of the characters forming the word, the character recognition dictionary for storing a standard pattern of a plurality of characters in advance, and the coordinate data and the standard pattern. A character recognition unit that recognizes a character and outputs it as a character code, a word dictionary that stores a plurality of words in advance, and a plurality of character codes recognized by the character recognition unit are accepted as a character code string. The word in the word dictionary is compared, and the position of the character code counted from the beginning of the character code string and the position of the character corresponding to the character code counted from the beginning of the word to be compared match. Regardless of whether or not it is a word to search for a word in which the context of each character code in the character code string matches the context of each character that constitutes the word to be compared. Search means and display means for displaying one or more words searched by the word search means as word candidates, and selecting a word from the word candidates displayed by the display means based on an instruction from the outside. Then, this is output as a word corresponding to the input character string.

Further, word registration means for registering a new word as a newly registered word in the word dictionary, and recognizing each character constituting the newly registered word when the character cannot be recognized by the character recognition means. It is provided with a non-recognition target character determining means for determining a non-target character, and a character registration means for storing the standard pattern of the handwriting of the non-target character in the character recognition dictionary.

Further, input means for acquiring coordinate data of a part of characters forming a word, a character recognition dictionary for storing a standard pattern of a plurality of characters in advance, and a character recognition device for storing characters based on the coordinate data and the standard pattern. Character recognition means for recognizing and outputting as a character code, a plurality of classification word dictionaries in which a plurality of words are classified in advance, and a word dictionary specifying means for specifying a classification word dictionary to be used from the plurality of classification word dictionaries A word search means for searching the word dictionary including the character code from the classified word dictionary designated by the word dictionary designation means, and a display means for displaying one or more of the words searched by the word search means as word candidates, And selecting a word from the word candidates displayed by the display means based on an instruction from the outside, and outputting it as a word corresponding to the input character string. Than it is.

Further, input means for acquiring coordinate data of a part of characters forming a word, a character recognition dictionary for storing a standard pattern of a plurality of characters in advance, and a character recognition device for storing characters based on the coordinate data and the standard pattern. Character recognition means for recognizing and outputting as a character code, a plurality of classification word dictionaries in which a plurality of words are classified in advance, and a word dictionary specifying means for specifying a classification word dictionary to be used from the plurality of classification word dictionaries A word search means for searching the word dictionary including the character code from the classified word dictionary designated by the word dictionary designation means, and a display means for displaying one or more of the words searched by the word search means as word candidates, And selecting a word from the word candidates displayed by the display means based on an instruction from the outside, and outputting it as a word corresponding to the input character string. Than it is.

Further, in the word inputting method according to the present invention, a character inputting step of accepting input of a part or all of characters forming a word and storing a handwriting, and each of the characters based on the handwriting. A character recognition step of recognizing and outputting each of the identification results as a character code, a word length input step of receiving an input of the word length of a word to be input, and a word dictionary storing a plurality of words in advance, A word search step of searching for one or more words including characters and having the word length, and displaying each as a word candidate, and selecting one candidate word from the one or more word candidates. It is something to choose. Here, in the selection in this word input method, not only when a plurality of word candidates are displayed in the word search step but also when one word candidate is displayed,
This includes selecting the word candidate.

Further, a character input step of accepting an input of a part or all of characters forming a word and memorizing a handwriting, recognizing each of the characters based on the handwriting, and identifying each of them as a character code. The character recognition step of outputting and a plurality of character codes recognized by the character recognition step is a character code string, the character code string is compared with a word in the word dictionary, and the character code string is counted from the beginning. The position of the character code, and the position of the character corresponding to the character code counted from the beginning of the word to be compared, regardless of whether or not they match the context of each character code in the character code string A word search step of searching for a plurality of words that match the context of the codes of the letters that make up the words to be compared and displaying each as a word candidate. One candidate word from among one or more of said word candidates and selects the.

In the character recognition step, a character registration step is performed in which a character is recognized by referring to a character recognition dictionary which stores a standard pattern of a plurality of characters in advance, and a new word is registered in the word dictionary as a new registered word. When each character forming the newly registered word is a character that cannot be recognized by the character recognition step, a non-recognition target character determination step of determining the character as a non-recognition target character, and a handwriting of the non-recognition target character And a character registration step of storing the standard pattern of 1. in the character recognition dictionary.

Further, a character input step of accepting an input of a part of characters forming a word and storing a handwriting, and recognizing each of the characters based on the handwriting and outputting an identification result as a character code. A character recognition step; a dictionary selection step of selecting one word dictionary as a selection dictionary from a plurality of pre-classified word dictionaries; one or a plurality of words including the character code are searched from the selection dictionary; A word candidate search step of displaying as a candidate, and selecting one candidate word from one or a plurality of the word candidates.

Further, a character input step of accepting an input of a part or all of characters forming a word and memorizing a handwriting, and recognizing each of the characters based on the handwriting and identifying results as character codes respectively. A character recognition step of outputting, a word registration step of receiving an input of a new word and registering this word in the word dictionary, and a standard pattern in which the character is a plurality of characters for each of the characters forming the new word Is stored in advance in a character recognition dictionary, and if not stored, a non-recognition-target character determination step of determining a non-recognition-target character, and a plurality of the output characters output in the character recognition step A character code is used as a search key character string, and the search key character string is constructed based on the position of the character code from the beginning of the search key character string. A plurality of sets are generated by using a set of a character code and a code of a plurality of characters forming a word in the word dictionary, and one or a plurality of words matching the codes of the sets are searched, and the word is also included. And a word search step of displaying as a word candidate each of which is regarded as a match when the character forming the character is the non-recognition character, and one candidate from one or more of the word candidates. It selects a word.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. The operation of the first embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIG. 1 shows the first embodiment.
It is a functional block diagram showing the configuration of the online word input device of, in FIG. 1, 1 is a control means for controlling a series of operations from character input to character recognition processing, word search, word display, 5 is a user A stylus pen and a tablet are used as an input method for inputting handwritten characters.The stylus pen and the tablet are used as the input method that is practically used in the pen computer.The stylus pen and the electromagnetic induction that occurs when the stylus pen moves on the tablet are used. There is a method of detecting the coordinates of the written characters and saving the coordinates in a buffer.

Reference numeral 3 denotes a character recognition means for converting a character image handwritten by the user using the handwriting input means 5 into a character code. The processing generally used as a character recognition method is to convert characters from character image data into characters. This is a method in which the characteristic amount is extracted and collated with the standard pattern data of the character and the character having the most similar characteristic amount is used as the recognition result. The feature amount includes, for example, the character line feature (arrangement of strokes), contour feature (outer shape, etc.), and background feature (shown on page 44 of “Pattern Recognition” published by The Institute of Electronics, Information and Communication Engineers (edited by Kenichi Mori) Loop, closing rate, etc.) Reference numeral 4 is a word search means for searching the word dictionary 8 and outputting candidate words by using the character code string of one or more characters output by the character recognition means 3 as a key character, and 6 is a character and word search recognized by the character recognition means 3. Means 4 is a display means for displaying the retrieved words. 7
Is a character recognition dictionary that stores standard patterns of characters,
It is composed of the features extracted by the character recognition means 3 and the corresponding character codes. 8 is a word dictionary that stores words.

Reference numeral 2 is a word length determining means for determining the word length of the word searched by the word searching means 4, and the word length is determined based on the information input by the user from the input means 5.

FIG. 2 is a flowchart of the word input process of the control means 1, and FIG. 3 is a flowchart of the word search process of the word search means 4. FIG. 4 is a character input screen. Figure
In 4, a character input display screen 9 in which a tablet which is a part of the input means 5 and a display such as a liquid crystal which is a part of the display means 6 are integrated, 10 is a character input frame for the user to input characters, and 11 is a character input frame It is a word length input frame in which the user inputs a word length. Further, FIGS. 5 and 7 to be described later each show a character input screen in the word input processing process, and the same reference numerals as those in FIG. 4 denote the same or corresponding portions. FIG. 6 shows the contents of the word dictionary 8. In FIG. 6, the word length and the word corresponding thereto are associated with each other.

This operation will be described below with reference to the flow charts of FIGS. First, the processing is started from step s100 in FIG. 2, and in step s101, the control means 1 is in a waiting state for character input from the user. The user manually inputs the word length of the word intended to be input and the first character of the word. Now, the user intends to input "cable TV", and
"Cable TV" word length "7" in the word length input box 11
Enter by handwriting in the character box 10
Enter by handwriting. FIG. 5 is a screen in which the user inputs the word length and the first character of the word. The input means 5 holds the character data entered by the user in a buffer (not shown). The input means 5 terminates the input if the user does not perform an input operation for a certain period of time after starting character input on the input screen 9. This step s101
When is finished, the display means 9 becomes as shown in FIG.

Next, in step s102, the control means 1 inputs the input means 5
The character data "Ke" 13 and "7" 12 collected by are passed to the character recognizing means 3, and the character recognizing means 3 is activated. Character recognition means 3
Extracts the features used for character recognition from the input image,
Matches with the standard pattern features in the character recognition dictionary 7 and outputs the character with the highest degree of similarity as the recognition result. Now, as a result of character recognition, character data 12 of word length is character-recognized to "7" and character data 13 of a part of a word is character-recognized to "ke". Next, the character recognition means 3 outputs the word length and the character recognition result of a part of the word to the control means 1.

Next, in step s103, the control means 1 passes "7" which is the recognition result of the word length image 12 to the word length determination means 2. The word length determination means 2 determines the word length searched by the word search means 4. In this embodiment, the recognition result “7” is directly determined as the number of word characters and output to the control means 1.

Next, in step s104, the control means 1
The word length "7" determined by the word length determination means 2 and the character recognition result "ke" of a part of the word output by the character recognition means 3 are passed to the word search means 4 to activate the word search means 4. The processing flow of the word search means 4 will be described with reference to FIG.

First, in step s111, the word search means 4 reads a word whose word length is the input value k from the word dictionary 8.
In this example k = 7. Figure 6 shows the contents of the word dictionary 8,
The word dictionary 8 has a structure in which word lengths are associated with words. The word search means 4 searches for a word string 15 having a word length of 7. Next, the first word “cable TV” is read from the word string 15 into the buffer. Next, in step s112, the input character is compared with the word read in the buffer. Now, since the first character of "ke" which is a part of the characters input from the control means 1 and "cable TV" match, "cable TV" satisfies the condition of step s112, and Y
Go to. In step s113, "cable television" is held in the buffer as an output candidate.

Next, in step s114, the word length is k (=
7) Verify that there is no other word in the word dictionary 8 that is. In this case, since another word "computer" exists, the process proceeds to N and proceeds to step s111. As in the previous case, "computer" is taken out from the word dictionary 8. Then step s11
Go to step 2 and check if the first letter "ko" of "ke" and "computer" match. In this case, since they do not match, the process proceeds to N and step s114 is executed. After that, the same process is executed to match all the words having a word length of 7.
Then, when it is determined in step s114 that the search for the word of word length k is completed, the process proceeds to step s115, and the output candidate words stored in the current buffer and stored in step s113 are output to the control means 1 as a result. The processing ends in step s116.

Next, the control means 1 proceeds to step s105 in FIG. 2 and outputs the candidate words received from the word search means 4 and the character recognition result output by the character recognition means 3 to the display means 6.
FIG. 7 is a diagram in which the candidate words received from the control means 1 by the display means 6 and the results “7” and “ke” recognized by the character recognition means 3 are displayed on the screen. In FIG. 7, 16 and 17 are the character recognition results of the user, and 18 is a candidate word. Then, in step s106, the word search process ends.

With the above processing, the user can obtain only "cable television" candidates from the input of "7" and "ke". In the above-described embodiment, when searching for candidate words, an example in which the same value as the number of input characters is specified as the word length has been shown, but this may have a width of approximately ± 1 to 2 characters. In addition, the word length input work was specified by recognizing the characters input by the user, but this is also done by keyboard input instead of input by character recognition.
It is also possible to use the screen keyboard on the display for input.

As described above, according to the present embodiment, the word search means can limit the words to be searched by designating the word length of the word required by the user. Since the number of output candidate words is significantly reduced compared to the case where the number of characters shown in the conventional example is not provided, the user can easily select an intended candidate even if there are a plurality of candidates. .

Embodiment 2. Next, an embodiment in which the word length is designated by a method other than the character input by the user will be described. The operation of the second embodiment of the present invention will be described below with reference to FIGS.
It will be described with reference to FIGS. 2, 3, 6, and 8 to 10.

FIG. 1 is a block diagram of the second embodiment, and FIG. 2 is a flow chart of the operation of the control means 1 in FIG. Figure 3
Is a flowchart of the operation of the word search means 4, and FIG. 6 shows the contents of the word dictionary 8. FIG. 8 is a flowchart of the word length determining means 2. Figure 9 is an example of the character input screen.
4, the same reference numerals as those in FIG. 4 represent the same or corresponding parts, and
0 is a word length entry frame. Character entry frame 10 and word length entry frame 2
0 is one-to-one correspondence as shown in the figure. Also, the character box numbers of the character box 10 are associated with 1, 2, ... in order from the left end. 10 is also a character input screen, and the same reference numerals as those in FIG. 9 represent the same or corresponding portions.

As in the first embodiment, in step s101, the control means 1 is in a state of waiting for an input from the user. When the user inputs a character, the control means 1 activates the input means 5. Now, the user intends to input "cable TV", inputs the first character "ke", and the character length of "cable TV" is 7
Therefore, the 7th character in the word length entry frame 20 is marked. FIG. 9 is a diagram in which the user has entered a katakana “ke” 21 and a mark 22 in the word length entry frame 20. The input means 5 holds the coordinate data of the input character in a buffer. When the input is completed, the control means 1 proceeds to step s102 and passes the input character image 21 to the character recognition means 3. The character recognition means 3 performs character recognition as in the first embodiment. Here, “ke” is output as the recognition result.

Next, in step s103, the control means 1 activates the word length determination means 2. The word length determination means 2 uses the coordinates of the beginning of the character input by the user and the coordinates of the mark 22 existing in the word length entry frame 20. The operation of the word length determining means 2 will be described with reference to FIG. First, in step s211, the character frame in which the character written by the user exists is determined. The method for determining the character frame is to extract the first coordinate of the character input by the user and compare it with the coordinate range of each character frame 10. It becomes 1 in FIG. Next, in step s212, the word length determining means 2 determines the character box number by comparing the coordinates of the mark 22 entered by the user with the coordinate range of each of the character boxes 10. It is 7 in FIG. Next, in step s213, word length = 7-1−1 = 1 = 7 is calculated from the two values obtained in s211 and s212. The word length determination means 2 outputs the calculated word length “7” to the control means 1 and ends.

Next, moving to the processing of FIG. 2, the control means 1 proceeds to step s104, passes the word length “7” and the recognition result “ke” of the input character to the word search means 4 and activates the word search means 4. The word search means 4 performs the same processing as in the first embodiment to search the word dictionary 8 and output "cable television". Control means 1
Passes the candidate word and the character recognition result to the display means 6 and activates the display means 6. The display means 6 outputs the candidate word and the character recognition result as in the first embodiment. The results are shown in Fig. 10. In FIG. 10, 18 is a candidate word, and 25 is the result of recognition of the input character by the character recognition means 3.

With the above processing flow, it is possible to obtain only "cable television" by obtaining the word length to be searched from the characters entered by the user and the word length frame marked by the user and outputting the word candidates. Become.

In this embodiment, only the word length designated by the user is targeted, but this may have a width of about 1 to several characters before and after the designated word length.

As described above, according to this embodiment, the user can specify the word length of the word intended to be input, and the word search means can limit the words to be searched. High-speed search processing is possible, and the number of output candidate words is significantly reduced compared to the case where the number of characters shown in the conventional example is not given. Therefore, even if there are multiple candidates, the user can easily select the intended candidate. Become.

Embodiment 3. The first and second embodiments of the present invention are effective methods when the word length is known. Described below is an embodiment in which the candidates can be narrowed down without inputting the word length. Figure below
The operation of the embodiment of the second invention will be described with reference to FIGS. 11 to 15 and 6. FIG. 11 is a functional block diagram showing the configuration of the online handwritten word input device according to the second embodiment.
In FIG. 11, the same reference numerals as those in FIG. 1 represent the same or corresponding parts. Reference numeral 31 is a control means for performing control from the user inputting a character to displaying the candidate word, 32 is a word search for searching the word dictionary 8 with the character recognized by the character recognition means 3 as a key, and outputting the candidate word It is a means.

FIG. 12 is a flow chart of the word input process in the control means 31, FIG. 13 is a flow chart of the word search process in the word search means 32, and FIG. 14 is an example in which the user has entered characters on the character input screen. The same reference numerals as those in FIG. 4 represent the same or corresponding parts. Reference numeral 33 is a handwritten input character input by the user. FIG. 15 is a character input screen in which word candidates are displayed. In FIG. 15, the same symbols as in FIG. 4 represent the same or corresponding parts. 34 is the recognition result of the handwritten character by the character recognition means 3, and 35 is the candidate word searched by the word search means 32.

First, in step s301 of FIG. 12, the control means 31 is in a waiting state for character input from the user. When the user starts to write characters, the control means 31 activates the input means 5. The input means 5 holds the coordinate data of the character input by the user in the buffer. FIG. 14 is an example in which the user has entered characters. In FIG. 14, the user intends to input “cable television” and enters “kere”. When the user has not entered for a certain period of time after entering characters, the input means 5 regards the end of character input and ends the input. The control means 31 proceeds to step s302 to activate the character recognition means 3. The character recognizing means 3 performs the character recognizing process as in step s102 of the first embodiment, and outputs the result to the control means 31.

The control means 31 proceeds to step s303 to activate the word search means 32. The operation of the word search means 32 will be described with reference to FIG. First, in step s311, i = 1 and k = 0 are substituted. Next, in step s312, one word is extracted from the word dictionary 8. Here, the first word "cake" is extracted from the dictionary shown in FIG. Next, in step s313, the numbers of characters of the character strings “kere” and “cake” received from the control means 31 are compared. In this case, since the number of characters of the character string “Kere” is equal to or more than the number of word characters, the condition is satisfied and the process proceeds to Y. Next, proceeding to step s314, the i-th character from the beginning of the input character is set to 1
Extract characters. Now, i = 1, so in this case "kere"
"Ke" is taken out and substituted in the buffer. Next, the process proceeds to step s315, and it is searched whether the same character as the character extracted in step s314 exists from the beginning of the word to the kth position or later.

In the checking method, the word and the input character are collated in order from the kth word, and the number of characters from the beginning of the first matched character is m. If the same character exists, step s
Proceed to 316 and substitute m for k. In this case, since the same character exists in m = 1, the process proceeds to Y in step s315, and step s316
Substitute k = m (= 1) with. Then go to step s317 and set i
Increment by 1 and set i = 2. Next, in step s318, it is determined whether all input characters have been completed. In this case i
There is a letter "re" in the letter, so proceed to N and step
Go to s314. In step s314, the i (= 2) th character is extracted from the input character. Next, the process proceeds to step s315, m is changed by a value larger than k, and it is checked whether the corresponding character exists. In this example, since the corresponding character does not exist, step
s315 becomes N, and the process proceeds to step s320. At s320, the word still exists, so step s320 becomes N and step s3
Go to 11 and match with the next word. Hereinafter, this operation is repeated.

Then, in step s313, the "cable television" is taken out, and in step s315, processing is performed to determine whether the input character "re" is present. When the process proceeds to step s318, all the input characters have ended, so Y is displayed. It is determined and it moves to step s319. In step s319, the word extracted in step s312 (that is, "cable television") is stored as a candidate word, and the same processing is performed for the next word, so the process moves to step s320.

When the processing is performed as described above and the search processing is executed for all the words, "cable television" remains as a candidate word, so "cable television" is output from the word dictionary 8 as a candidate word.

Next, returning to FIG. 12, the control means 31 makes a step.
Proceeding to s304, the display means 6 is activated to output the recognition result and the candidate word. Figure 15 shows the results. In FIG. 15, 34 is a character recognition result, and 35 is a display means for displaying the word searched by the word search means 32.
6 is the result displayed.

As described above, according to the present embodiment, a word string including characters written by the user is output, and in particular, an input character string that is not continuous from the beginning is also subjected to word matching processing and output. Therefore, it is possible to input characters so as to effectively narrow down the candidate words according to the user's intention, and there is an advantage that the number of input characters can be reduced as compared with the conventional example.

Fourth Embodiment When the number of words in the word dictionary becomes huge, the number of candidate words corresponding to the number of input characters increases, and it takes time to select an intended word, resulting in poor usability.
As an example of a means for avoiding this, there is a method of dividing a word dictionary into a plurality of parts according to the attributes of words. A method of selecting a word dictionary when a word is divided into a plurality of dictionaries, which is an embodiment of the third invention, will be described below with reference to FIGS. 16 to 23.

FIG. 16 is a functional block diagram showing the structure of the online handwritten word input device according to the third embodiment of the present invention. In FIG. 16, the same symbols as those in FIG. 1 represent the same or corresponding parts, 41 is a control means for controlling the flow of character input to candidate word output, and 42 is one word dictionary from a plurality of word dictionaries 45 to 47. A word dictionary selecting means for selecting, 44 is a word searching means for searching a corresponding word from the word dictionaries 45 to 47 designated by the word dictionary selecting means 42 using the input character code as a key, 5
Is an input means for inputting a character image, and 45 to 47 are word dictionaries in which words are stored.

FIG. 17 is a flow chart for explaining the word input process of the control means 41. FIG. 18 is a flowchart for explaining the search process of the word search means 44, and FIG. 19 is a character input screen. In FIG. 19, the same symbols as those in FIG. 4 represent the same or corresponding parts. Further, 48 is a button for selecting the address word dictionary 45, 49 is a button for selecting the name word dictionary 46, and 50 is a button for selecting the general word dictionary 47. Reference numeral 10 is a character frame for entering characters. FIG. 20 shows the contents of a plurality of word dictionaries, 51 is the contents of the address word dictionary 45, 52 is the contents of the name word dictionary 46, and 53 is the contents of the general word dictionary 47. Figure 2
Similarly, 1, 22, and 23 are character input screens as shown in FIGS.
In each of 2 and 23, the same reference numerals as those in FIG. 19 represent the same or corresponding portions.

Next, the operation will be described. Introduction Figure 17
In step s401, the control means 41 is in a state of waiting for an input from the user. When the user starts character input, the control means 41
Activates the input means 5. The user writes the first letter of the word intended to be written. FIG. 21 shows an example of characters entered by the user. In FIG. 21, the user intends to input “adapter” and inputs “a” 54. When the input is completed, the control means 41 proceeds to step s402 to activate the character recognition means 3 using the input image. The character recognition means 3 compares the standard pattern in the character recognition dictionary 7 with the feature amount extracted from the input image, and sets the character having the highest similarity as the recognition result. The character recognition means 3 outputs the recognition result “A” 56 to the control means 41 and ends the processing.

The control means 41 proceeds to step s403 to activate the word dictionary selection means 42. The word dictionary selecting means 42 waits for the user to select one of the word dictionaries 48 to 50.
In FIG. 22, since the word “adapter” intended for input is a general word, the user selects 55 by pressing the general word 50 with a pen. The word dictionary selection means 42 outputs to the control means 41 a signal that the general word 50 is selected. In step s404, the control means 41 sends an input character image of "A" 54 and a signal for selecting a word dictionary to the word search means 44 to activate the word search means 44.

The flow of the word search means 44 will be described with reference to FIG. First, one word is extracted from the word dictionary specified in step s411. In this case, the first word "ice cream" is extracted from the general dictionary 53. Then step s412
Proceed to and compare the number of word characters and the number of input characters. In the example, the number of word characters = 7 and the number of input characters = 1, so the condition is satisfied and the process proceeds to Y. The input character code "A" is taken out with s413. Step
Take out "a" from "ice cream" with s414. At this time, the order (counted from the beginning of the word) of the characters extracted in step s414 is the same as the order (counted from the beginning of the input character) of the characters extracted in step s413.
Next, in step s415, the character code of the character extracted in step s413 is compared with the character extracted in s414. In this case, since the two character codes match, the process proceeds to Y and proceeds to s416. In s416, it is investigated whether it is the end of the input character. In this case, since the input character is one character, the condition is satisfied and the process proceeds to Y. Next, in step s417, "ice cream"
Is stored as a candidate word. Proceeding to step s418, it is investigated whether it is the end of the word dictionary 53. In the example, the word still exists, so the condition is not satisfied and the process proceeds to N.

The same process is repeated thereafter, and when all the words registered in the dictionary are processed, the process proceeds to step s419, and the candidate words stored in step s417 are output as the candidate word group 57. The output candidate word group 57 is received by the control means 41, and the process proceeds to step 405 in FIG. 17, and the received candidate word group 57 is output to the display means 6. The display means 6 outputs the candidate word group 57 as shown in FIG. These candidate word groups
57 is passed to the control means 41. The control means 41 passes the candidate word group 57 to the display means 6. The display means 6 displays a word. The user can obtain the word intended to be input by selecting from the candidate word group 57.

By the above processing, the word dictionaries 45 to 47 are divided according to fields, and the word search processing is executed from the field-specific word dictionaries 45 to 47 selected by the user, whereby the word search time is shortened and the candidate words are searched. Since it is narrowed down, the time required for the user to select can be shortened and the usability for the user is improved.

In the fourth embodiment, only an example of inputting one character is shown, but it is possible to add a word length input means in combination with the first and second embodiments. Further, in combination with the third embodiment, a search method in which the input characters are not necessarily continuous character strings but are output as candidates is also possible. Further, in the present embodiment, an example in which one word dictionary is designated from a plurality of word dictionaries 45 to 47 has been described, but the number of word dictionaries is not limited to one, and a plurality of word dictionaries may be designated.

Embodiment 5. So far, the processing when the search processing is performed from the words that are normally present in the word dictionary has been described. However, there may be a case where the user needs to register and use a word that does not exist in the word dictionary. When a user registers a word, if a character code that is not a character recognition object exists in the character code of the registered word, the desired character recognition result cannot be obtained by character recognition, so that there is a problem that the registered word is not output. . The fifth embodiment deals with this problem.

The operation of the fifth embodiment will be described below with reference to FIGS.
This will be explained using 33. FIG. 24 is a functional block diagram showing the configuration of the online word input device according to the fifth embodiment,
24, the same reference numerals as those in FIG. 1 represent the same or corresponding parts. 61 is a character registration process, and a control means for controlling the flow of candidate word output from character input, 63 is a word search means for searching a word dictionary 65, and 65 is a non-recognition target flag corresponding to each character in the word. A word dictionary, 64 is a word registration means for registering a word by the user, and 62 is a non-recognition target character determination means for determining whether a character in the word registered by the word registration means 64 is a non-recognition target character. The word registration means 64 activates the non-recognition target character determination means 62 for each character of the word to be registered, adds “0” to the non-recognition target flag for each character in the case of a recognition target character, In the case of, "1" is added to the non-recognition target flag.

FIG. 25 is a flow chart for explaining the word registration process of the control means 61, and FIG. 26 is a flow chart for explaining the word search process of the word search means 63. FIG. 27 is a word registration screen on the display means 6, 66 is a word entry field for entering characters in each field and entering a word, 67 is an end button to be pressed after the word is entered, and 68 is a cancel button. . 69 is a display screen of the display means 6. FIG. 29 shows the contents stored in the word dictionary 65, 71 is a word, and 72 is a non-recognition target flag corresponding to each character of the word 71 and indicating whether or not that character is not a recognition target.

First, referring to FIG.
This will be explained using 29. First, in step s501 of FIG. 25, the user performs word registration processing. The word to register is a word dictionary 65
It does not exist in. Figure 27: Display means when registering words
It is a word registration screen displayed in 6. In FIG. 27, the user inputs a word to be registered in the character box 66. Now, the user is "△
“Denki” is registered, and here, “Δ” is excluded from character recognition targets. The word registration means 64 may enter a character that is not recognized by the character recognition means 3 and cannot be input using character recognition.Therefore, kana-kanji conversion or a character code table is used for input. Use a method such as searching for the desired character from among and specifying it. FIG. 28 is an example in which a character is input in hiragana as “sankaku” from “Δ” and then converted into “Δ” using kana-kanji conversion to input a word. When the word input is completed, the user presses the end button 67 to register the word.

Next, in step s502, the word registration means 64
The non-recognition character determining means 62 is activated. The non-recognition target character determination means 62 determines whether the words registered by the user are the recognition target characters one by one. The determination method investigates whether the character of the registered word exists in the character recognition dictionary 7, and returns “0” when the character of the registered word exists in the character recognition dictionary 7,
When the character of the registered word does not exist in the character recognition dictionary 7, "1" is returned. The word registration unit 64 uses the value returned by the non-recognition target character determination unit 62 as a flag and the word dictionary together with the registered word.
Save to 65. FIG. 29 shows an example in which the word registration means 64 adds a flag to each of “Δ Denki”. In FIG. 29, the only non-recognition characters for “Δ Denki” are “Δ”.

Now that the word registration process has been completed, the flow of the character input process will be described. FIG. 30 is a character input screen of the display means 6, and the same reference numerals as those in FIG. 4 represent the same or corresponding parts. First of all, in FIG. 30, the user inputs the character “Δ field”. After inputting characters, the control means 61 is a character recognition means.
Start up 3. The character recognition means 3 recognizes the character and outputs the result to the control means 61. FIG. 31 is a character input screen after the control means 61 outputs the recognition result to the display means 6 and the display means 6 displays the recognition result. 31, the same reference numerals as those in FIG. 30 represent the same or corresponding parts. Since “Δ” 73 is a non-recognition target character, the first character is erroneously recognized as “○” 74.
Next, the control means 61 uses the character recognition result "○ Ta" as the word search means.
Output to 63.

A flow chart of word search processing of the word search means 63 is shown.
It will be explained using 26. Introduction step s511 word dictionary
Read one word from 65 into the buffer. Here, the first word in the word dictionary 65, "○ Tako" is read into the buffer. Next, in step s512, the length test of the number of input characters and the word length is performed. When the number of input characters ≤ the number of word characters (Y)
Goes to step s513, otherwise goes to step s5
Proceed to 13. In this example, since the number of input characters is 2 and the number of word characters is 4, the process proceeds to Y.

In step s513, one character "○" is extracted from the beginning of the word, and in step s514, from the beginning of the input character
Take out one character "○". Next, referring to the non-recognition target flag of the word extracted in step s515, it is checked whether the character is not a character recognition target character. In the example, the flag "○" is 0, so N
Go to step s516. If the flag is 1, proceed to step s517. In step s516, it is verified whether the characters extracted in steps s513 and s514 match. In this case, since they match, the process proceeds to Y and proceeds to step s517. On the other hand, if they do not match, the process proceeds to step s519.

In step s517, it is checked whether the processing in step s515 or s516 has been completed for all the input characters. In this case, since the process is not completed, the process proceeds to N, the second character "Tan" of the word is taken out at step s513, and the second character "Tan" of the input character is taken out at step s514. In step s515, it is checked whether the second character "Ta" of the word is a non-recognition target character. In this case, since it is a recognition target, the process proceeds to step s516, and it is investigated whether the character codes match. Since the input character and the character of the word match, the process proceeds to step s517.

At step s517, since the processing of step s515 or s516 has been completed for all the input characters, the process proceeds to Y and proceeds to step s518. In step s517, "○ TA Shoji" is saved as a candidate word. Thereafter, the process proceeds to step s519, and it is investigated whether or not there is a word in the word dictionary 65 that has not been extracted in step s511. Since there are still words, the result is N, and the flow advances to step s511 to fetch the next word.

The same processing is performed thereafter. Then step s5
At 11, the operation when the user-registered “Δ Denki” is retrieved from the word dictionary 65 will be described. Step
Test the number of characters with s512. Since the word length is 4, it is larger than the number of input characters and the process proceeds to Y. Next step s513, s514
Take out "○" from the input character and "△" from the word.
Proceeding to step s515, it is checked whether the character is not a recognition target. In the dictionary, since the non-recognition flag of “Δ” is 1, the process proceeds to N, the character code is not tested for matching, the process proceeds to step s517, and the next character is tested.

In step s513, the second character "T" of the word is extracted, in step s514 the second character "T" of the input word is extracted, and in step s515, it is investigated whether the character of the word is a non-recognition character. Here, since the flag for not recognizing the second character of the extracted word is 0, the process proceeds to step s516, and the input character and the two characters of the word are collated. In this case, since the character codes match, the process proceeds to step s517. In step s517, since it is the last input character, the process proceeds to step s518, and the word “ΔTadenki” is stored as a candidate word. Next, the process proceeds to step s519, and since it is the last word, the process proceeds to Y, and in step s520, the candidate word in the buffer is output to the control means 61, and the process ends. The control means 61 outputs the candidate word to the display means 6. The display means 6 displays candidate words. The result is shown in Figure 32.
Is.

32 and 33 are character input screens displayed on the display means 6, and the same reference numerals as those in FIG. 30 represent the same or corresponding parts. In FIG. 32, the word “Δ Denki” that the user intends to input exists in the candidate words 75, so the user selects “Δ Denki”. This selection is made by directly pointing to the word using a pen or the like. Then, as shown in FIG. 33, the target word is determined.

As described above, according to the present invention,
Even if the registered characters include unrecognized characters, it is possible to output them as candidate words by inputting characters.

Sixth Embodiment In the above-described fifth embodiment, the method of outputting as a candidate word by using the method in which the character code is not collated when the registered word is a character non-character recognition target has been described. In the sixth embodiment, a method of making a character recognition non-target character a character recognition target character by performing character registration will be described. An embodiment of the fifth invention will be described below with reference to FIGS. 27, 28, and 34 to 38.

FIG. 34 is a functional block diagram showing the structure of the online word input device according to the sixth embodiment. 34, the same reference numerals as those in FIG. 24 represent the same or corresponding parts.
Reference numeral 81 is a character registration process and control means for controlling the flow of character input to candidate word output, 82 is a word registration means for a user to register a word that does not exist in the word dictionary in the word dictionary 8, and 83 is a character recognition dictionary 7 Is a character registration means for registering a character that does not exist in the character dictionary 7. FIG. 35 is a flow chart of word registration processing in the word registration means 82, and FIG. 36 is a flow chart of character registration processing by the character registration means 83. FIG. 37 is a character registration screen displayed on the display means 6. 85 in FIG. 37
Is a character code for registering characters, 86 is a writing frame for writing characters by handwriting, 87 is an end button to be pressed after writing characters, 88 is a cancel button for ending this character registration process without registering characters. is there.

First, the flow of word registration processing will be described with reference to FIGS. 35 and 37. First, in step s601, the user performs word registration as in step s501 of the fifth embodiment. FIG. 27 is a word registration screen at that time. Then, as already described with reference to FIG. 28 in the fifth embodiment, the user inputs “Δ Denki” in the character box 66, and the end button
Press 67 to finish. Next, the word registration means 82 uses step s6.
In 02, it is checked whether the character code in the registered word is a character recognition target character. The flow will be described with reference to FIG.

First, from the words registered in step s611
Extract one character. Here, “Δ” is extracted. Next, in step s612, the non-recognition target character determination means 62 is activated. The non-recognition character determining means 62 searches the character recognition dictionary 7 to determine whether this character is included in the character recognition dictionary 7. If it is determined that it is included, the process proceeds to step s614 without registering characters. On the other hand, if it is determined that they are not included, the process proceeds to step s613. In this case, since it does not exist in the character recognition dictionary 7, the result is N in step s612, the flow proceeds to step s613, the character registration means 83 is activated, and character registration processing is performed.

FIG. 37 shows an example of the screen of the display means 6 during the character registration processing. Reference numeral 85 denotes a character to be registered, and the user writes the character to be registered in the character writing frame 86 and registers the handwriting of the handwritten character. The character registration means 83 extracts a feature amount used for character recognition from the written character image and registers it in the character dictionary 7 together with the character code 85 as a standard pattern.

Next, the process proceeds to step s614, and it is checked whether or not the processing is completed for all the characters in the word. In this case, since there are still characters, the process proceeds to step s611 and the same process is performed. In the words to be registered, the characters other than “Δ” are the recognition target characters, so the other characters are not registered and the process ends in step s615, and proceeds to step s603 in FIG. When the process proceeds to step s603, the initiative of the process is returned to the control unit 81, and the word registration process and the character registration process described above are completed.

Next, the process of inputting a word can be performed in the same manner as in the conventional example, and can also be performed by using the first, second or third embodiment. in this way,
When the word to be registered includes a non-recognition target character, by performing character registration using the character registration means 83, it becomes possible to output a candidate character by character entry like other recognition target characters. .

[0082]

Since the present invention is constructed as described above, it has the following effects. In the word input device according to the present invention, an input unit that acquires coordinate data of some or all of the characters that form a word, a character recognition dictionary that stores a standard pattern of a plurality of characters in advance, the coordinate data and the A character recognition means for recognizing a character based on a standard pattern and outputting it as a character code, a word length determination means for determining a word length based on word length information input from the outside, and a word for storing a plurality of words in advance A dictionary, a word search means for searching the word dictionary for words having the word length and including the character code, and a display means for displaying one or more words searched by the word search means as word candidates. , And selects a word from the word candidates displayed by the display means based on an instruction from the outside, and outputs it as a word corresponding to the input character string. Since the word search means performs a keyword searching process using the word length word length determining means has determined,
Since the number of words searched by the word search means is reduced as compared with the case where the word length is not used, the search time is shortened. Further, since the number of output candidate words is also reduced as compared with the related art, the user can easily select a word intended to be input from the candidate words and can quickly input the word.

[0083]

Further, the input means includes a character frame for inputting a part or all of characters forming a word, a word length designating character frame corresponding to the character frame on a one-to-one basis, and handwriting Coordinate acquisition means for acquiring coordinate data, the word length determination means, to determine the word length based on the coordinate data of the handwriting input in the word length designation character frame, to quickly input the word be able to.

Further, based on the coordinate data and the standard pattern, an input means for acquiring coordinate data of a part or all of characters forming a word, a character recognition dictionary for storing a standard pattern of a plurality of characters in advance, A character recognition unit that recognizes a character and outputs it as a character code, a word dictionary that stores a plurality of words in advance, and a plurality of character codes recognized by the character recognition unit are accepted as a character code string. The word in the word dictionary is compared, and the position of the character code counted from the beginning of the character code string and the position of the character corresponding to the character code counted from the beginning of the word to be compared match. Regardless of whether or not it is a word to search for a word in which the context of each character code in the character code string matches the context of each character that constitutes the word to be compared. Search means and display means for displaying one or more words searched by the word search means as word candidates, and selecting a word from the word candidates displayed by the display means based on an instruction from the outside. Then, this is output as a word corresponding to the input character string, and even if the continuous character string from the beginning of the word intended to be input is not input, it is compared with the word containing the character input by the word search means, and the candidate word Since the user can input characters so that only the words that are intended to be input are output from the similar words, the user can easily select the intended word from the candidate words and You can type quickly.

Further, word registration means for registering a new word as a newly registered word in the word dictionary, and recognizing each character constituting the newly registered word when the character cannot be recognized by the character recognition means. Since the non-recognition character determining unit for determining the non-target character and the character registration unit for storing the standard pattern of the handwriting of the non-recognition character in the character recognition dictionary are provided, the character registration operation is automatically performed. Therefore, there is an effect that the user does not need to determine whether or not the character is not a recognition target.

Further, an input means for acquiring coordinate data of some characters forming a word, a character recognition dictionary for storing a standard pattern of a plurality of characters in advance, and a character recognition dictionary for storing characters based on the coordinate data and the standard pattern. Character recognition means for recognizing and outputting as a character code, a plurality of classification word dictionaries in which a plurality of words are classified in advance, and a word dictionary specifying means for specifying a classification word dictionary to be used from the plurality of classification word dictionaries A word search means for searching the word dictionary including the character code from the classified word dictionary designated by the word dictionary designation means, and a display means for displaying one or more of the words searched by the word search means as word candidates, And selecting a word from the word candidates displayed by the display means based on an instruction from the outside, and outputting it as a word corresponding to the input character string. Because, when the user executes a keyword searching process from the selected categorical word dictionary, shortened word search time, and because candidate word is narrowed can quickly enter a word.

Also, based on the coordinate data and the standard pattern, an input means for acquiring coordinate data of a part or all of characters forming a word, a character recognition dictionary for storing a standard pattern of a plurality of characters in advance, A character recognition means for recognizing a character and outputting it as a character code, a plurality of words, and a word dictionary storing information as to whether or not each character forming the words can be recognized by the character recognition means, and A word registration means for registering a new word as a newly registered word in the word dictionary, and when each character forming the newly registered word is a character that cannot be recognized by the character recognition means, the character is determined as a non-recognition character. Non-recognition character determining means for outputting to the word dictionary, and receiving a plurality of the character codes from the character recognizing means and searching for these character codes -A character string, based on the position of the character code from the beginning of the search key character string, a set of the character code forming the search key character string and the character code forming the word in the word dictionary, A plurality of sets are generated, and a word search means for searching for words whose codes in those sets match, and when the characters forming the words are the unrecognized characters, are considered to match and are searched, Display means for displaying one or more of the words searched by the word search means as word candidates, selecting a word from the word candidates displayed by the display means based on an instruction from the outside, and inputting this Since the word is output as a word corresponding to the input character string, the word can be quickly input even if the word to be input includes an unrecognized character.

Further, in the word input method according to the present invention, a character input step of accepting input of a part or all of characters forming a word and storing a handwriting, and each of the characters based on the handwriting. A character recognition step of recognizing and outputting each of the identification results as a character code, a word length input step of receiving an input of the word length of a word to be input, and a word dictionary storing a plurality of words in advance, A word search step of searching for one or more words including characters and having the word length, and displaying each as a word candidate, and selecting one candidate word from the one or more word candidates. Select and use the word length entered in the word length input step,
Since the word search process is performed in the word search step, the number of words searched in the word search step is reduced as compared with the case where the word length is not used, and thus the search time is shortened. In addition, since the number of output candidate words also decreases compared to the conventional method, the user can easily select a word intended to be input from the candidate words,
You can enter words quickly.

Further, a character input step of accepting an input of a part or all of characters forming a word and memorizing a handwriting, recognizing each of the characters based on the handwriting, and identifying results as character codes respectively. The character recognition step of outputting and a plurality of character codes recognized by the character recognition step is a character code string, the character code string is compared with a word in the word dictionary, and the character code string is counted from the beginning. The position of the character code, and the position of the character corresponding to the character code counted from the beginning of the word to be compared, regardless of whether or not they match the context of each character code in the character code string A word search step of searching for a plurality of words that match the context of the codes of the letters that make up the words to be compared and displaying each as a word candidate. For selecting one candidate word from among one or more of said word candidates can be quickly select a word input.

In the character recognition step, a word registration step of recognizing a character by referring to a character recognition dictionary in which standard patterns of a plurality of characters are stored in advance and registering a new word in the word dictionary as a new registered word When each character forming the newly registered word is a character that cannot be recognized by the character recognition step, a non-recognition target character determination step of determining the character as a non-recognition target character, and a handwriting of the non-recognition target character And a character registration step of storing the standard pattern in the character recognition dictionary, so that the character registration operation can be automatically performed, and the user does not need to determine whether or not the character is a non-recognition character. effective.

Further, a character input step of accepting an input of a part of characters forming a word and storing a handwriting, and recognizing each of the characters based on the handwriting and outputting an identification result as a character code. A character recognition step; a dictionary selection step of selecting one word dictionary as a selection dictionary from a plurality of pre-classified word dictionaries; one or a plurality of words including the character code are searched from the selection dictionary; And a word candidate search step of displaying as a candidate. Since one candidate word is selected from one or more of the word candidates, it is possible to quickly select and input the word.

Further, a character input step of accepting an input of a part or all of characters forming a word and memorizing a handwriting, recognizing each of the characters based on the handwriting, and making an identification result as a character code, respectively. A character recognition step of outputting, a word registration step of receiving an input of a new word and registering this word in the word dictionary, and a standard pattern in which the character is a plurality of characters for each of the characters forming the new word Is stored in advance in a character recognition dictionary, and if not stored, a non-recognition-target character determination step of determining a non-recognition-target character, and a plurality of the output characters output in the character recognition step A character code is used as a search key character string, and the search key character string is constructed based on the position of the character code from the beginning of the search key character string. A plurality of sets are generated by using a set of a character code and a code of a plurality of characters forming a word in the word dictionary, and one or a plurality of words matching the codes of the sets are searched, and the word is also included. And a word search step of displaying as a word candidate each of which is regarded as a match when the character forming the character is the non-recognition character, and one candidate from one or a plurality of the word candidates. Since the word is selected, even if the word to be input includes an unrecognized character, the word can be input quickly.

[0094]

[Brief description of drawings]

FIG. 1 is a first embodiment and a second embodiment of the present invention.
2 is a functional block diagram showing the configuration of the online handwritten word input device of FIG.

FIG. 2 is a first embodiment and a second embodiment of the present invention.
3 is a flowchart showing a control flow of the control means 1 of FIG.

FIG. 3 is a flowchart illustrating processing of word search means 4 according to Embodiment 1 of the present invention.

FIG. 4 is a diagram showing a character input screen on the display means according to the first embodiment of the present invention.

FIG. 5 is a diagram in which a user has input a character on the character input screen according to the first embodiment of the present invention.

FIG. 6 is a first embodiment and a second embodiment of the present invention.
It is a figure showing the content of the word dictionary 8.

FIG. 7 is a diagram in which a result of word search for the input of FIG. 5 is output in the first embodiment of the present invention.

FIG. 8 is a flowchart showing a processing flow of a word length determination means 2 according to Embodiment 2 of the present invention.

FIG. 9 is a diagram showing a character input screen on the display means according to the second embodiment of the present invention.

FIG. 10 is a diagram in which a result of word search with respect to the input of FIG. 9 according to the second embodiment of the present invention is output.

FIG. 11 is a functional block diagram showing the configuration of the online handwritten word input device according to the third embodiment of the present invention.

FIG. 12 is a flowchart illustrating a word input process of control means 31 according to the third embodiment of the present invention.

FIG. 13 is a flowchart illustrating a word search process of word search means 32 according to the third embodiment of the present invention.

FIG. 14 is a diagram showing a character input screen on the display means according to the third embodiment of the present invention.

FIG. 15 is a diagram of word output corresponding to the input of FIG. 14 in the third embodiment of the present invention.

FIG. 16 is a functional block diagram showing the configuration of the online handwritten word input device according to the fourth embodiment of the present invention.

FIG. 17 is a flowchart illustrating a word input process of the control means 41 according to the fourth embodiment of the present invention.

FIG. 18: Word search means 4 according to Embodiment 4 of the present invention
It is a flow chart explaining word search processing of No. 4.

FIG. 19 is a diagram showing a character input screen on the display means according to the fourth embodiment of the present invention.

FIG. 20 shows contents of word dictionaries 45 to 47 according to the fourth embodiment of the present invention.

FIG. 21 is a diagram showing a character input screen on the display means 6 according to the fourth embodiment of the present invention.

FIG. 22 is a diagram showing a character input screen when the character recognition result is displayed in FIG. 21 and the word dictionary 55 is selected in the fourth embodiment of the present invention.

FIG. 23 shows the configuration of FIG. 22 according to the fourth embodiment of the present invention.
It is the figure which showed the character input screen when a candidate word is output with respect to.

FIG. 24 is a functional block diagram showing the configuration of the online word input device according to the fifth embodiment of the present invention.

FIG. 25 is a flowchart illustrating a word registration process according to the fifth embodiment of the present invention.

FIG. 26 is a word search means 6 according to Embodiment 5 of the present invention.
It is a figure which shows the flow of a word search process of FIG.

FIG. 27 is a word registration screen on the display means 6 according to the fifth embodiment of the present invention and the sixth embodiment of the present invention.

FIG. 28 is a diagram showing a character input screen on the display means 6 according to the fifth embodiment of the present invention and the sixth embodiment of the present invention. .

FIG. 29 is a diagram showing the contents of a word dictionary 65 according to the fifth embodiment of the present invention.

FIG. 30 is a diagram showing a character input screen according to the fifth embodiment of the present invention and the sixth embodiment of the present invention. .

FIG. 31 is a diagram showing a character input screen displaying the character recognition result for the entered characters of FIG. 30 in the fifth embodiment of the present invention. .

FIG. 32 is a character input screen for outputting word candidates according to the fifth embodiment of the present invention.

FIG. 33 is a diagram showing a character input screen displaying a result of selecting one candidate from FIG. 32 in the fifth embodiment of the present invention.

FIG. 34 is a functional block diagram showing the configuration of the online word input device according to the sixth embodiment of the present invention.

FIG. 35 is a diagram showing a flow of word registration in the sixth embodiment of the present invention.

FIG. 36 is a diagram showing a processing flow of the word registration means 82 according to the sixth embodiment of the present invention.

FIG. 37 is a character registration screen on the display means 6 according to the sixth embodiment of the present invention.

FIG. 38 is a diagram showing a character input screen displaying a result of outputting word candidates for the characters of FIG. 30 in the sixth embodiment of the present invention.

FIG. 39 is a functional block diagram illustrating a configuration of a conventional online handwritten character device.

FIG. 40 is a diagram showing the contents of a conventional word dictionary.

FIG. 41 is a diagram showing an example in which characters are entered on a character entry screen of a conventional online handwriting device. .

42 is a diagram showing an example in which candidate words are displayed for the input characters of FIG. 41 on the character entry screen of the conventional online handwriting device.

FIG. 43 is a diagram in which characters are continuously input from the time of FIG. 42 on the character entry screen of the conventional online handwriting character device.

44 is a diagram showing an example in which candidate words are displayed for the input characters of FIG. 43 on the character entry screen of the conventional online handwriting device.

[Explanation of symbols]

1 control means, 2 word length determination means, 3 character recognition means, 4 character search means, 5 input means, 6 display means, 7 character recognition dictionary, 8 word dictionary, 10 character input frame, 11 word length entry frame, 20 words Long box, 4
2 word dictionary selection means, 48 address word dictionary selection button, 49 full name word dictionary selection button, 50 general word dictionary selection button, 51 address word dictionary, 52 full name word dictionary, 53 general word dictionary, 62 unrecognized character determination means, 82 word registration means, 83 character registration means

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Okada 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (56) Reference JP-A-7-6212 (JP, A) JP-A-5 -216932 (JP, A) JP-A-4-31990 (JP, A) JP-A-7-296106 (JP, A) JP-A-61-136182 (JP, A) JP-A-63-279388 (JP, A) ) JP-A-7-192095 (JP, A) JP-A-7-320002 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G06K 9 / 00-9 / 82

Claims (11)

(57) [Claims] 1. An input means for acquiring coordinate data of a part or all of characters forming a word, a character recognition dictionary for storing a standard pattern of a plurality of characters in advance, based on the coordinate data and the standard pattern. Character recognition means for recognizing characters and outputting as a character code, word length determination means for determining the word length based on the coordinates of the mark entered by the user as word length information input from the outside, and a plurality of words in advance A stored word dictionary, a word search unit that searches the word dictionary for a word that includes the character code and has the word length, and one or more of the words searched by the word search unit are displayed as word candidates. A display means, which selects a word from the word candidates displayed by the display means based on an instruction from the outside, and which selects a word corresponding to the input character string. Word input device to be output as. 2. An input means for acquiring coordinate data of a part or all of characters forming a word, a character recognition dictionary for storing a standard pattern of a plurality of characters in advance, based on the coordinate data and the standard pattern. A character recognition unit that recognizes a character and outputs it as a character code, a word length determination unit that determines a word length based on word length information input from the outside, a word dictionary that stores a plurality of words in advance, and the character A word search means for searching a word having a word length and including a code from the word dictionary; and a display means for displaying one or more words searched by the word search means as word candidates, Is a word input device that selects a word from the word candidates displayed by the display means based on an instruction from and outputs it as a word corresponding to the input character string. , The input means is a character frame for inputting a part or all of the characters constituting a word, a word length designation character frame corresponding to the character frame in a one-to-one correspondence, and coordinate data of handwritten handwriting The word length determining means determines the word length based on the coordinate data of the handwriting input in the word length designation character frame. 3. An input means for acquiring coordinate data of a part or all of characters forming a word, a character recognition dictionary for storing a standard pattern of a plurality of characters in advance, based on the coordinate data and the standard pattern. A character recognition unit that recognizes a character and outputs it as a character code, a word dictionary that stores a plurality of words in advance, and a plurality of character codes recognized by the character recognition unit are accepted as a character code string. Compare the word in the word dictionary, the position of the character code counted from the beginning of the character code string, and the position of the character corresponding to the character code counted from the beginning of the word to be compared,
Irrespective of whether or not match, the word search means for searching for a word in which the context of each character code in the character code string and the context of each character forming the word to be compared are matched, Display means for displaying one or a plurality of words searched by the word search means as word candidates, selecting a word from the word candidates displayed by the display means based on an instruction from the outside, and inputting the selected word The word input device which outputs as a word corresponding to the specified character string. 4. A word registration means for registering a new word as a newly registered word in the word dictionary, and recognizing each character constituting the newly registered word when the character is not recognizable by the character recognition means. 4. A non-recognition target character determination unit for determining a non-target character, and a character registration unit for storing a standard pattern of handwriting of the non-target character in the character recognition dictionary. The word input device according to any one of 1. 5. An input unit for acquiring coordinate data of a part of characters constituting a word online, a character recognition dictionary for storing a standard pattern of a plurality of characters in advance, and based on the coordinate data and the standard pattern. The word
Character recognition means for recognizing a part of the characters constituting the , and outputting as a character code; a plurality of classification word dictionaries in which a plurality of words are classified in advance ; and a dictionary selected by the user from the plurality of classification classification word dictionaries. <br /> A word dictionary designating unit designated as a classification word dictionary to be used, and a word including a character code of a part of characters forming the word is searched from the classification word dictionary designated by the word dictionary designating unit. A word search means; and a display means for displaying one or more of the words searched by the word search means as word candidates, and displaying a word from the word candidates displayed by the display means based on an instruction from the outside. A word input device that selects and outputs this as a word corresponding to the input character string. 6. An input means for acquiring coordinate data of a part or all of characters forming a word, a character recognition dictionary for storing a standard pattern of a plurality of characters in advance, based on the coordinate data and the standard pattern. recognizes characters, and stores the character recognition means for outputting a plurality of words, and with characters, each character corresponds to information of whether recognizable by said character recognition means constituting those words as the character code words A dictionary, a word registration means for registering a new word as a newly registered word in the word dictionary, and a case where each character forming the newly registered word is a character that cannot be recognized by the character recognition means, the character is not recognized. An unrecognized character determination unit that determines a character and outputs it to the word dictionary, and receives a plurality of the character codes from the character recognition unit. A character code is used as a search key character string, and based on the position of the character code from the beginning of the search key character string, a character code that forms the search key character string and a code of a character that forms a word in the word dictionary are set. As one set, a plurality of sets are generated, a word search in which the codes of those sets match is searched, and when the characters forming the word are the unrecognized characters, the word search is performed by searching as a match. Means and a display means for displaying one or more of the words searched by the word search means as word candidates, and selecting a word from the word candidates displayed by the display means based on an instruction from the outside. , A word input device that outputs this as a word corresponding to the input character string. 7. A character input step of receiving an input of a part or all of characters forming a word and memorizing a handwriting, and recognizing each of the characters based on the handwriting and using an identification result as a character code, respectively. a character recognition step of outputting, the word length input step of accepting the coordinates of the mark which the user inputs a word length of words to be entered is entered, from the word dictionary for storing in advance a plurality of words, characters of the character codes And a word search step of searching one or more words having the word length and displaying each as a word candidate, and selecting one candidate word from the one or more word candidates. Word input method. 8. A character input step of receiving an input of a part or all of characters forming a word and memorizing a handwriting; recognizing each of the characters based on the handwriting, and identifying each of them as a character code. A character recognition step of outputting, a plurality of character codes recognized by the character recognition step as a character code string, comparing this character code string with a word in the word dictionary, and counting from the beginning of the character string code. The position of the character code, and the position of the character corresponding to the character code counted from the beginning of the word to be compared, regardless of whether or not they match the context of each character code in the character code string A word search step of searching for a plurality of words that match the context of the codes of the characters that form the words to be compared and displaying each as a word candidate; A word input method for selecting one candidate word from one or a plurality of the word candidates. 9. The character recognizing step recognizes a character by referring to a character recognizing dictionary that stores a standard pattern of a plurality of characters in advance, and registers a new word in the word dictionary as a new registered word. When each of the characters forming the newly registered word is a character that cannot be recognized by the character recognition step, a non-recognition target character determination step of determining the character as a non-recognition target character, and a handwriting of the non-recognition target character 9. The word inputting method according to claim 7, further comprising: a character registration step of storing the standard pattern of 1. in the character recognition dictionary. 10. A character input step of receiving an input of a part of characters forming a word and storing a handwriting, and recognizing each of the characters based on the handwriting and outputting an identification result as a character code. Character recognition step and 1 selected by the user from a plurality of pre-classified word dictionaries
A dictionary selecting step of selecting one word dictionary as a selection dictionary, and searching the selection dictionary for one or a plurality of words including a character code of a part of the characters forming the word, each of which is a word candidate And a word candidate searching step for displaying the word candidate as a word input method for selecting one candidate word from one or more of the word candidates. 11. A character input step of accepting an input of a part or all of characters forming a word and storing a handwriting, and recognizing each of the characters based on the handwriting and using an identification result as a character code, respectively. A character recognition step of outputting, a word registration step of receiving an input of a new word and registering this word in the word dictionary, and a standard pattern in which the character is a plurality of characters for each of the characters forming the new word Is determined in advance whether or not it is stored in a character recognition dictionary that is stored in advance, and a non-recognition-target character determination step of determining a non-recognition-target character when it is not stored; A character code is used as a search key character string, and the search key character string is constructed based on the position of the character code from the beginning of the search key character string. A plurality of sets are generated by using a set of a character code and a code of a plurality of characters that form a word in the word dictionary, and one or more words matching the codes of those sets are searched, and the word A character search step in which when the characters constituting the character are the non-recognition characters, they are considered to match and are searched, and each word is displayed as a word candidate, and one candidate is selected from one or more of the word candidates. A word input method for selecting words.