JP2000194796A - Handwriting character recognizing device and character input method for handwriting character recognition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handwriting character recognizing device and a character input method for handwriting character recognition with which an inputted character is easily converted into a target character for recognizing the character while registering and setting specified data (such as symbol or graphic) for converting the character when a character is manually written into a handwriting character input character frame and these specified data are inputted. SOLUTION: Concerning the handwriting character recognizing device provided with a handwriting character input means 106 for inputting a character to the handwriting input frame, handwriting character recognizing means 107 for recognizing that inputted character, display means 5 for displaying various kinds of information while including processing for displaying the recognized result in a recognized result display area inside a screen and control means 1 for controlling the respective above means, this device is provided with a character specifying means 109 for converting the character inputted by the handwriting character input means 106 to the target character and a character converting means 108 for converting that specified character into a target character code.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device including an electronic organizer, a personal digital assistant, a word processor (hereinafter referred to as a word processor), a personal computer (hereinafter referred to as a personal computer), and the like. In particular, the present invention relates to a handwritten character recognition device for recognizing a handwritten input character and a character input method for handwritten character recognition.

[0002]

2. Description of the Related Art In recent years, many electronic devices have a liquid crystal display tablet in which input means such as a tablet and display means such as an LCD are integrated. These electronic devices have a function of inputting information such as characters and symbols by handwriting on a tablet using a pen. The functions of the handwriting input include a method of storing written information as bitmap information as an image, and a method of storing written information such as various characters (kanji, hiragana,
There is a method of recognizing katakana, alphabetic characters, and other characters), various numbers and various symbols, and storing them as code information. Various methods have been proposed for character recognition methods for recognizing various characters, numerals, symbols, and the like input by handwriting, and various techniques have been disclosed for input methods for recognizing the characters.

[0003] In Japanese Patent Application Laid-Open No. Sho 61-194852,
A handwritten character recognition device that sets a lowercase range in a character entry frame and recognizes the entered character as a lowercase if the center of gravity of the entered character is within the set area, and otherwise recognizes the entered character as an uppercase. A method for distinguishing between uppercase and lowercase letters according to the position of the center of gravity of the input characters) and a handwritten character recognition device (input character A technique for distinguishing between uppercase and lowercase depending on the size) is disclosed.

[0004]

However, the technique described above still has the following problems.

[0005] The system disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 61-194582 has the following problems.

[0006] In the handwritten character recognition device, a specific line segment needs to be stored in advance in order to determine the position of the center of gravity of the input handwritten character. The determination is complicated because it is not known whether or not it will be changed.

In the handwritten character recognition device, the size of the input handwritten character is identified and determined based on the size of the input handwritten character.
The characteristics of the input characters are difficult to output, and the character recognition rate is reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. It is an object of the present invention to register and set a specific symbol or graphic for converting characters in advance and perform character recognition. In order to enter a handwritten character, a character is entered in the handwritten character input character frame, and after entering that character, if the particular symbol or figure is entered, the character entered to recognize the character is the target character An object of the present invention is to provide a handwritten character recognition device and a character input method for handwritten character recognition that can easily realize, for example, recognizing input characters as lowercase characters.

[0009]

According to a first aspect of the present invention, there is provided a handwritten character recognition apparatus for inputting a character by handwriting in a handwriting input frame, and a handwritten character recognizing the input character. A handwritten character recognition apparatus comprising: character recognition means; display means for displaying various information including a process of displaying the recognition result in a recognition result display area in a screen; and control means for controlling the respective means. A character specifying means for converting a character input by the handwritten character input means into a target character, and a character converting means for converting the specified character into a target character code. It is characterized by the following.

According to a second aspect of the present invention, there is provided the handwritten character recognition apparatus according to the first aspect, wherein the character specifying means includes a specification for inputting specific data indicating a character to be converted. Data input means, specific data storage means for storing the input specific data, and specific data discriminating means for identifying whether or not the input data to be handwritten includes the specific data. It is characterized by the following.

According to a third aspect of the present invention, there is provided the handwritten character recognition apparatus according to the first or second aspect, wherein the character specifying means erases specific data stored in the specific data storage means. And a specific data updating means for updating the specific data.

According to a fourth aspect of the present invention, there is provided the handwritten character recognition apparatus according to any one of the first to third aspects, wherein the control unit includes the specific data by the specific data determination unit. When it is determined that the character is present, the character conversion unit controls the character recognized by the handwritten character recognition unit to be converted to a target character.

According to a fifth aspect of the present invention, there is provided a character input method for handwritten character recognition, wherein a character is input to a handwritten character input character frame for inputting a handwritten character, the character is recognized, and the recognized character is recognized as a recognition result. In the handwritten character recognition character input method of performing handwritten character recognition by displaying in a display area, after inputting a character for character recognition, specific data including a specific symbol or figure is input to the handwritten character input character frame. By inputting, the specific data is determined, and after character recognition, each character is converted to a target character.

According to a sixth aspect of the present invention, there is provided the character input method for handwritten character recognition according to the fifth aspect, wherein the specific data including the specific symbol or graphic is converted into the handwritten character input character. The method of inputting in the frame and determining the corresponding character as the character to be converted is to input by overwriting the specific data including the specific symbol or figure on the character input in the handwritten character input character frame. Thus, the overwritten character is determined as a character to be converted.

According to a seventh aspect of the present invention, there is provided the character input method for handwritten character recognition according to the fifth aspect, wherein the specific data including the specific symbol or graphic is converted to the handwritten character input character. The method of inputting the character in the frame and determining the corresponding character as the character to be converted is performed by using the specific data including the specific symbol or graphic in the next handwritten character input character frame of the handwritten character input in the handwritten character input character frame. Is input, the first input character is determined to be a conversion target character.

The character input method for handwritten character recognition according to claim 8 of the present invention is the character input method for handwritten character recognition according to claim 5, wherein the specific data including the specific symbol or figure is replaced with the handwritten character input character. A method of inputting a character in a frame and determining the corresponding character as a character to be converted is performed by opening a next character frame for inputting a handwritten character next to the handwritten character input in the character frame for inputting a handwritten character, and further inputting the next handwritten character. When a character is input to the character frame, the previously input character is determined to be a conversion target character.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a handwritten character recognition apparatus and a handwritten character recognition character input method according to the present invention will be described below with reference to the drawings.

FIG. 1 is a functional block diagram of a device having a character input function for handwritten character recognition according to the present invention.

As shown in FIG. 1A, reference numeral 1 denotes a control device (CP) for controlling arithmetic processing and various means of equipment.
U) and 2 are first memories (for example, R 1) storing a program for the CPU 1 to perform processing, data for character recognition, and various data for operating other devices.
OM) 3 is a second area having a work area required for the CPU 1 to control the processing and an area used for temporarily storing candidate data and the like in processing such as character recognition. A memory (for example, RAM), 4 is an input device comprising input means such as a keyboard input means 41 and a tablet input means 42, and 5 is a display device for displaying various information (for example, a liquid crystal display such as a CRT or LCD). Display device).

The control device (CPU) 1 includes various means relating to processing of a prescribed figure for converting handwritten characters into target characters, various means relating to processing for inputting and recognizing handwritten characters, Means for converting to characters (see FIG. 1B).

As means relating to the processing of the prescribed graphic, specific data (prescribed graphic) input means 101 for inputting the prescribed graphic, specific data (prescribed graphic) storage means 102 for storing the inputted prescribed graphic, Specific data (specific graphic) erasing means 103 for erasing the input and stored specific graphic, specific data (specific graphic) updating means 10 for updating the input and stored specific graphic
4. Further, a specific data (regular graphic) search means 105 for retrieving stored standard graphics is provided. As means relating to processing for inputting and recognizing handwritten characters, there are provided handwritten character input means 106 for inputting characters in an input frame for handwritten characters, and handwritten character recognition means 107 for recognizing the input characters. Have been. As means relating to processing for converting a recognized character into a target character, a code converting means 108 is provided. Further, there is provided a handwritten character / specified figure discriminating means 109 for judging whether or not a specified figure is entered in the input frame for handwritten characters.

The first memory (ROM) 2 stores the CP
U1 controls the whole system and controls various processes such as calculations, various data for character recognition (stroke, character code, etc.), various data for display (CG, guidance, etc.), dictionary, etc. Are stored.

The second memory (RAM) 3 stores the CP
A work area 31 corresponding to a work area necessary for the U1 to control the entire system and handle various processes such as arithmetic operations, and specific data (regulated figure) storage for storing the inputted defined figure. A specific data storage area 32 corresponding to the means 102; a recognition result storage area 33 for storing the result of recognition of the input character by the handwritten character recognition means 107; There is provided a candidate data storage area 34 for storing candidates extracted at the time of recognition, and an area 35 for storing data and other necessary areas other than the candidate data storage area 34. A battery for backing up data in the second memory (RAM) so as not to erase the data may be provided.

The input device 4 and the display device 5 do not need to have separate and independent structures. For example, the input means and the display means used in a portable information terminal or the like are integrated. A liquid crystal display integrated tablet may of course be used.

In the following description, it is assumed that the input device 4 is provided with a tablet input unit 42 for easy understanding, and that input of handwritten characters is performed from the tablet input unit.

The following processing is realized by the various means and devices described above.

A method for inputting handwritten character recognition in a device having the above-described handwritten character recognition function will be described below.

(First Embodiment) FIG. 2 shows an example of a prescribed figure for recognizing a handwritten character as a lowercase letter.

This prescribed figure is registered in advance, and its method is as follows. Further, the prescribed graphic may be a symbol or a graphic.

For example, if it is assumed that the registration of the specified graphic can be executed by selecting a menu using the tablet input means 42, the user selects the menu in an arbitrary state while using the device, and thereby the specified graphic is registered. Is displayed (FIG. 2A). The input frame 20 may be an input board for recognizing handwritten characters or an input board for registering an external character, but in any case, the tablet input means 42 is used. The user enters a target graphic in the input frame 11 (FIG. 2B), and by performing a registration operation, the registration setting of a standard graphic for recognizing a handwritten character as a lowercase letter is completed. The prescribed graphic is stored in a specific data (prescribed graphic) storage area 32 in the second memory (RAM). This prescribed figure may be of one type,
There may be multiple types. For example, if a plurality of types of registrations are set, there is an advantage that they can be properly used depending on the case.

In the above example, a symbol (figure) marked with “○” is used as the prescribed graphic, but any other graphic may be used. This may be anything that is easy for the user to use.

As described above, after the registration and setting, the user recognizes a lowercase letter by inputting the same figure as in FIG. 2B in the normal input operation for handwritten character recognition.

In addition, not only can a prescribed figure be input to these, but also the above-mentioned erasing and updating means can be erased,
It can also be updated. For example, although not shown, buttons for registration, deletion, update, and the like are prepared in a screen displaying the input frame 20, and the user operates as necessary.

These input / setting registration (storage) / deletion /
Each process (operation and function) of the update is realized by using each unit of FIG.

All the operations for recognizing lowercase characters input on the input board for handwritten character recognition using the above-described prescribed figures are realized using the respective means shown in FIG.

FIG. 3 is an example of an operation display for recognizing a character input on the input board for handwritten character recognition in lower case using the above-mentioned prescribed figure.

FIG. 3A shows a state in which an input board for recognizing handwritten characters is displayed. The input board for recognizing handwritten characters includes a plurality of input character frames 21 for recognizing handwritten characters and a recognition result display area. 22. Although three input character frames 21 for handwritten character recognition are provided here, one may be provided, or a plurality of input character frames other than three may be provided depending on the size of the device.

First, as shown in FIG. 3B, the user writes a character "" in the first input box 211. Character recognition is performed, and “?” Is displayed as a recognition result in the recognition result display area 22 as shown in FIG. Next, as shown in FIG. 3C, the character "" is entered in the second input box 212. Therefore, as shown in FIG. 3D, the second input box 2 in which the character "" is entered
The specified figure of FIG. 2B is overwritten on the twelve “one”. Character recognition is performed. In this case, since the last input graphic is a pre-registered standard graphic, the character recognized as “tsu” is converted to lowercase “tsu”. As a result, “parentheses” are displayed in the recognition result display area 22 as shown in FIG. Further, the user writes “to” in the third input box 213 as shown in FIG. Character recognition is performed, and a character string “parentheses” is displayed as a result of recognition in the recognition result display area 22 as shown in FIG.

Note that the recognition of the characters entered in the input frame is executed by touching a recognition button (key) provided on an input board for handwritten character recognition, not shown, for example. Or the time is measured by the CPU 2 or the input device 4 in the device, and if there is no continuous input within the preset time for the same input frame, the input frame is A method of recognizing the entered character may be used, or another method may be used.

FIG. 4 is a flowchart of an operation for recognizing a character input on the input board for handwritten character recognition to lowercase letters using the prescribed graphic described in FIG.

Here, a variable KOMOJI is provided for identifying whether or not a prescribed figure has been entered in the input box.
The variable KOMOJI is set to 1 if the input character is a lowercase letter, and is set to 0 if the input character is not a lowercase letter.

In the case of FIG. 3, the number of input frames is three, but the flowchart here is a process for an arbitrary one of them. That is, in the case of three, the following processing is performed for three.
This is because it only needs to be executed twice.

First, an initial value 0 is set in a variable KOMOJI (S101). Handwriting data is input from the tablet into the input frame input by the user (S102). It is determined whether data input has been completed for the input frame (S103). If the processing has not been completed, data acquisition is continued until the processing is completed. If finished
After completion of the data fetch, it is checked whether or not the specified graphic is registered in advance (S104).
If it is not registered, do nothing (variable KOMO
The process proceeds to a process of recognizing the input character (without changing the value of JI) (S108). If the specified graphic is registered, it is determined whether or not the last input graphic is the same as the registered specified graphic (S105).
It should be noted that the determination here is made for a plurality of prescribed figures if the prescribed figures are registered. If the registered figure is the same as the registered figure, the figure entered last is not related to the input character and is removed from the recognition target (that is,
The recognition target is removed because only the originally input characters are used.) Since the input character is determined to be a lowercase letter, 1 is set to the variable KOMOJI (S10).
7). On the other hand, if it is not the same as the registered standard figure, since everything entered in the input box is a recognition target, the next processing is performed without deleting the figure or changing the value of the variable KOMOJI (S108). Proceed to.

Next, the input character is recognized (S10).
8). Thereafter, the value of the variable KOMOJI is checked (S1
09), if KOMOJI = 1, the character is recognized as a lowercase letter (S110), and if KOMOJI = 0, it is recognized as it is.

Thereafter, recognition processing of the next fetched character data is performed, and if necessary, character recognition processing is similarly performed on the remaining characters.

(Second Embodiment) A second embodiment of the present invention will be described with reference to a screen transition diagram of FIG.

In the operation example described with reference to FIGS. 3 and 4 of the first embodiment, the character recognition is described in the unit of one input character. However, in practice, the present invention is not limited to this. Absent. For example, a method as shown in FIG. 5 may be used. Here, the configuration of the input board for handwritten character recognition including the input frame shown in FIG. 5A is the same as that of FIG.

First, as shown in FIG. 5 (b), the user writes a character “KA” in the first input box 211. Subsequently, as shown in FIG. 5C, the character "" is entered in the second input box 212. Further, as shown in FIG. 5D, the character "" is entered in the third input box 213. Thereafter, as shown in FIG. 5 (e), the prescribed figure of FIG. 2 (b) is overwritten on the "one" of the second input frame 212. Thereafter, when character recognition is performed, in this case, since the last input graphic is a pre-registered standard graphic, the character recognized as "tsu" is converted to lowercase "tsu". Finally, as shown in FIG. 5E, the character string “parentheses” is displayed in the recognition result display area 22 as the recognition result.

In this case as well, the character recognition is performed by performing an operation such as touching a recognition button (key) provided on an input board for handwritten character recognition, not shown, although not shown. The input may be timed by the CPU 2 or the input device 4 in the device, and continuous input may be performed within a preset time for the last input frame with three input frames being filled. If there is no, there may be a method of recognizing characters input to the three frames, or another method.

(Third Embodiment) A third embodiment of the present invention will be described.

FIG. 6 shows an example of an operation display for recognizing a character input on the input board for handwritten character recognition into lowercase letters using the prescribed figure of FIG.

FIG. 6A shows a state in which an input board for handwritten character recognition is displayed. The input board for handwritten character recognition includes a plurality of input character frames 21 for handwritten character recognition and a recognition result display area. 22. Here, four input character frames 21 for handwritten character recognition are provided, but a plurality of input character frames other than four may be provided, which may be in accordance with the size of the device.

First, as shown in FIG. 6B, the user writes a character “KA” in the first input box 211. Character recognition is performed, and “?” Is displayed as a recognition result in the recognition result display area 22 as shown in FIG. Next, as shown in FIG. 6C, the character "" is entered in the second input box 212. Therefore, as shown in FIG. 6D, the prescribed figure of FIG.
Fill in 3. When character recognition is performed, the figure in this case is a pre-registered standard figure, so the character entered in the immediately preceding input box and recognized as "tsu" is converted to lowercase "tsu". You. As a result, “parentheses” are displayed in the recognition result display area 22 as shown in FIG. Further, the user writes “to” in the fourth input box 214 as shown in FIG. Thereafter, character recognition is performed, and a character string “parentheses” is displayed as a recognition result in the recognition result display area 22 as shown in FIG.

The recognition of the characters entered in the input box is executed by performing an operation such as touching a recognition button (key) provided on an input board for handwritten character recognition, not shown. Or the time is measured by the CPU 2 or the input device 4 in the device, and if there is no continuous input within the preset time for the same input frame, the input frame is A method of recognizing the entered character may be used, or another method may be used.

FIG. 7 is a flowchart of an operation for recognizing a character input on the input board for handwritten character recognition in lower case using the prescribed graphic described in FIG.

Here, as in the first embodiment, a variable K for identifying whether or not a prescribed figure has been entered in the input box is set.
OMOJI is provided. The variable KOMOJI is 1 if the input character is lowercase, and 0 if the input character is not lowercase.
Set.

In the case of FIG. 6, the number of input frames is four, but the flow chart here is a process for arbitrary two adjacent frames. That is, in the case of four, the following process may be executed twice at most.

First, an initial value 0 is set in a variable KOMOJI (S301). Handwriting data is input from the tablet into the input frame input by the user (S302). It is determined whether or not data input has been completed for the input frame (S303). If the processing has not been completed, data acquisition is continued until the processing is completed. If finished
After the completion of the data fetch, the process for the next adjacent frame is performed. Handwriting data is taken from the tablet into the input frame input by the user in the same manner as the previous frame (S304). It is determined whether or not data input has been completed for the input frame (S305). If the processing has not been completed, data acquisition is continued until the processing is completed.
If it has been completed, it waits for the end of the data fetching, and checks whether or not the specified graphic has been registered in advance (S306). If it is not registered, nothing is performed (the value of the variable KOMOJI is not changed), and the process proceeds to the process of recognizing the input character (S309). If the specified graphic is registered, it is determined whether or not the input graphic is the same as the registered specified graphic (S30).
7). It should be noted that the determination here is made for a plurality of prescribed figures if the prescribed figures are registered. If the registered figure is the same as the registered figure, the inputted figure is not related to the input character and is removed from the recognition target (ie,
The recognition target is removed because only the originally input characters are used.) Since it is determined that the input character is a lowercase letter, 1 is set to the variable KOMOJI (S30).
8). On the other hand, if it is not the same as the registered standard figure, since everything entered in the input box is to be recognized, the next processing is performed without deleting the figure or changing the value of the variable KOMOJI (S309). Proceed to.

Next, the input character is recognized (S30).
9). Thereafter, the value of the variable KOMOJI is checked (S3
10) If KOMOJI = 1, the character is recognized as a lowercase letter (S311), and if KOMOJI = 0, it is recognized as it is.

Thereafter, recognition processing of the next fetched character data is performed, and if necessary, character recognition processing is similarly performed on the remaining characters.

(Fourth Embodiment) A fourth embodiment of the present invention will be described with reference to a screen transition diagram of FIG.

In the operation example described with reference to FIGS. 5 and 6 of the third embodiment, the character recognition is performed in a unit of one input character. However, in practice, the present invention is not limited to this. Absent. For example, a method as shown in FIG. 7 may be used. Here, the configuration of the input board for handwritten character recognition including the input frame shown in FIG. 7A is the same as that of FIG.

First, as shown in FIG. 7 (b), the user writes the character “ka” in the first input box 211. Subsequently, as shown in FIG. 7C, the character "" is entered in the second input box 212. Subsequently, as shown in FIG. 7D, the prescribed figure of FIG. 2B is entered in the third input box 213. Finally, as shown in FIG. 7E, the character “to” is entered in the fourth input box 214. After that, the character recognition is performed sequentially from the first input frame. At this time, for the second to fourth input boxes, it is checked whether or not the entered character is a pre-registered standard graphic as shown in FIG. 2, and the graphic is entered. Then, the character in the input box immediately before the figure is written is converted to lower case. Finally, as shown in FIG. 7F, the character string “parentheses” is displayed in the recognition result display area 22 as the recognition result.

In this case, the character recognition is also performed by performing an operation such as touching a recognition button (key) provided on an input board for handwritten character recognition, not shown, although not shown. The input may be timed by the CPU 2 or the input device 4 in the device, and continuous input may be performed within a preset time for the last input frame with the four input frames being filled. If there is no, there may be a method of recognizing characters input in the four frames, or another method.

(Fifth Embodiment) A fifth embodiment of the present invention will be described.

FIG. 9 is an example of an operation display for recognizing a character input on the input board for handwritten character recognition in lower case by providing an unfilled input frame in place of the prescribed figure shown in FIG. .

FIG. 9A shows a state in which an input board for handwritten character recognition is displayed. The input board for handwritten character recognition includes a plurality of input character frames 21 for handwritten character recognition and a recognition result display area. 22. Here, four input character frames 21 for handwritten character recognition are provided, but a plurality of input character frames other than four may be provided, which may be in accordance with the size of the device.

First, as shown in FIG. 9 (b), the user writes a character “ka” in the first input box 211. Character recognition is performed, and “?” Is displayed as a recognition result in the recognition result display area 22 as shown in FIG. 9C. Next, as shown in FIG. 9C, the character "" is entered in the second input box 212. Therefore, nothing is entered in the third input box 213 as shown in FIG. The user enters the fourth input frame 2 as shown in FIG.
Write “to” in 14. Then, the second character recognition is performed. In this case, since the third input box 213 is empty,
The second character “tsu” immediately before is recognized as a lowercase “tsu”, and “parentheses” are displayed as a result of the recognition in the recognition result display area 22 as shown in FIG. Then 4
The character recognition of the third frame is performed, and the character string “parentheses” is displayed as the recognition result in the recognition result display area 22 as shown in FIG.

The above-described recognition of the characters entered in the input frame is performed by performing an operation such as touching a recognition button (key) provided on an input board for handwritten character recognition, not shown. Or the time is measured by the CPU 2 or the input device 4 in the device, and if there is no continuous input within the preset time for the same input frame, the input frame is A method of recognizing the entered character may be used, or another method may be used.

FIG. 10 is a flowchart of an operation for recognizing a character input on the input board for handwritten character recognition to lowercase letters using the prescribed figure described in FIG.

Here, as in the first and third embodiments, a variable KOMOJI is provided for identifying whether or not a prescribed figure has been entered in the input box. The variable KOMOJI is set to 1 if the input character is a lowercase letter, and is set to 0 if the input character is not a lowercase letter.

In the case of FIG. 9, the number of input frames is four, but the flowchart here is a process for arbitrary two adjacent frames. That is, in the case of four, the following process may be performed at most twice.

First, an initial value 0 is set in a variable KOMOJI (S501). Handwriting data is input from the tablet into the input frame input by the user (S502). It is determined whether or not data input has been completed for the input frame (S503). If the processing has not been completed, data acquisition is continued until the processing is completed. If finished
After the completion of the data fetch, the process for the next frame is performed. Handwriting data is input from the tablet into the input frame input by the user (S504). It is determined whether or not data input has been completed for the input frame (S
505). If the processing has not been completed, data acquisition is continued until the processing is completed. If the processing has been completed, the processing for the next frame is performed after the completion of the data capture.
At this time, it is checked whether or not the frames whose data have been fetched are in order, that is, whether a character has been input in the immediately preceding frame (S506). If a character has been entered in the previous box, it is normal, so the variable KOMOJI
The process proceeds to the next process without changing the value of (S508). However, if the previous box is a blank box, it indicates that the characters in the box before the blank box will be converted to lower case.
Therefore, the variable KOMOJI is set to 1 (S50).
7).

Next, the input character is recognized (S50).
8). Thereafter, the value of the variable KOMOJI is checked (S5
09), if KOMOJI = 1, the character is recognized as a lowercase letter (S510), and if KOMOJI = 0, it is recognized as it is.

Thereafter, recognition processing of the next fetched character data is performed, and if necessary, character recognition processing is similarly performed on the remaining characters.

The method using a blank frame in this embodiment is as follows.
It may be combined with each of the first to fourth embodiments.

(Sixth Embodiment) A sixth embodiment of the present invention will be described with reference to a screen transition diagram of FIG.

In the operation example described with reference to FIGS. 9 and 10 of the fifth embodiment, the character recognition is described in a system in which one character is inputted. However, the present invention is not limited to this. Absent. For example, a method as shown in FIG. 11 may be used. Also in this case, the configuration of the input board for handwritten character recognition including the input frame shown in FIG.

First, as shown in FIG. 11B, the user writes a character “KA” in the first input box 211. Subsequently, as shown in FIG. 11C, the character "" is entered in the second input box 212. Here, nothing is entered in the third input box 213 as shown in FIG. Finally, as shown in FIG. 7E, the character “to” is entered in the fourth input box 214. After that, the character recognition is performed sequentially from the first input frame. that time,
It is checked whether the entered characters are not present in the second to fourth input boxes, that is, whether or not the input boxes are in an unfilled state. As a result, if there is an unfilled input box, the character in the immediately preceding input box is converted to lower case. Finally, FIG.
As shown in (f), the character string “parentheses” is displayed in the recognition result display area 22 as the recognition result.

In this case as well, the character recognition is executed by performing an operation such as touching a recognition button (key) provided on an input board for handwritten character recognition, not shown, although not shown. The input may be timed by the CPU 2 or the input device 4 in the device, and continuous input may be performed within a preset time for the last input frame with the four input frames being filled. If there is no, there may be a method of recognizing characters input in the four frames, or another method.

As described above, in the first to sixth embodiments, the processing for recognizing and converting the input characters into lowercase characters using the specified graphic has been described. However, if a function for setting the input of the prescribed graphic in FIG. 2 as shown in FIG. 2 for uppercase letters instead of lowercase letters is provided, the first embodiment to the sixth embodiment can be used. Can be applied to the process of recognizing and converting the input characters into uppercase characters by using a prescribed graphic.

Further, the input of the prescribed figure shown in FIG.
A method may be used in which a frame 201 for lowercase letters and a frame 202 for uppercase letters are provided, and only those that are registered and set function effectively.

In the above description, the prescribed graphic is used for converting the size of characters. However, the present invention is not limited to this. For example, the case where hiragana is converted to katakana, the reverse case, or the case where the number 0 To 9 to kanji and vice versa, or to convert numbers to Arabic and Greek numbers and vice versa, to convert Hiragana and Katakana to Roman characters and vice versa, or to write characters When converting to English characters such as English characters and vice versa,
It can be applied to any conversion intended by the user.

From the above description, the features of the present invention are summarized as follows.

For example, converting characters to lower case has the following advantages.

[0086] Small letters can be easily input without writing small letters.

Since the character does not have to be in the same frame as the character to be made lowercase, the original character remains as it is and is easy to understand.

Even if a lowercase letter is not registered in advance, a lowercase letter can be set.

Also, when converting to uppercase, there is the same advantage as above.

Further, in the case other than converting characters to lowercase or uppercase, the trouble of converting with reference to a code table of symbols and special characters can be omitted.

After the recognition of the original character, the trouble of separate conversion can be saved.

Since the same conversion can be easily performed in the same pattern, a complicated operation is not required.

There are the following advantages.

The contents of the above-described embodiments are not limited to the contents described above unless the gist of the present invention is changed.

[0095]

According to the handwritten character recognition device and the character input method for handwritten character recognition of the present invention, the following effects can be obtained.

Since the characters can be easily converted by the same operation, a complicated conversion operation is not required. For this reason, it is not necessary to perform conversion while referring to the code table of symbols or special characters, and there is an effect that an operation of separately converting after recognition of the original character is not required.

For example, when converting characters to lower case,
Even if you do not write small letters, you can easily enter lowercase letters and do not need to occupy the same frame as the letters you want to lowercase, so the original letters will remain as it is, and it will be easier to understand, and you can register lowercase letters in advance. It can be said that lowercase characters can be set without setting. These effects have the same effect not only when converting to lowercase but also when converting to uppercase.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a device having a character input function of handwritten character recognition according to the present invention.

FIG. 2 is a diagram for explaining an example of a prescribed graphic for recognizing a handwritten character as a lowercase letter according to the present invention.

FIG. 3 is a screen transition diagram for explaining a first embodiment of a character input method for handwritten character recognition according to the present invention.

FIG. 4 is a flowchart for explaining a first embodiment of a character input method for handwritten character recognition according to the present invention.

FIG. 5 is a screen transition diagram for explaining a second embodiment of the character input method for handwritten character recognition according to the present invention.

FIG. 6 is a screen transition diagram for explaining a third embodiment of the character input method for handwritten character recognition according to the present invention.

FIG. 7 is a flowchart for explaining a third embodiment of the character input method for handwritten character recognition according to the present invention.

FIG. 8 is a screen transition diagram for explaining a fourth embodiment of the character input method for handwritten character recognition according to the present invention.

FIG. 9 is a screen transition diagram for explaining a fifth embodiment of the character input method for handwritten character recognition according to the present invention.

FIG. 10 is a flowchart for explaining a fifth embodiment of the character input method for handwritten character recognition according to the present invention.

FIG. 11 is a screen transition diagram for explaining a sixth embodiment of the character input method for handwritten character recognition according to the present invention.

FIG. 12 is a diagram for explaining an example of a reference graphic for recognizing a handwritten character as a lowercase letter or an uppercase letter in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control device (CPU) 2 1st memory (ROM) 3 2nd memory (RAM) 4 Input device (tablet) 5 Display device 20 Standard figure input frame 21 Handwritten character input frame 22 Recognition result display area

Claims (8)

[Claims] 1. A handwritten character input means for inputting characters in a handwritten input frame by handwriting, a handwritten character recognition means for recognizing the input characters, and a recognition result displayed in a recognition result display area on a screen. In a handwritten character recognition device comprising a display means for displaying various information including a process for performing the processing, and a control means for controlling the respective means, a character input by the handwritten character input means is converted into a target character. Character specifying means for converting, and a character converting means for converting the specified character to a target character code,
A handwritten character recognition device characterized by comprising: 2. The method according to claim 1, wherein the character identification unit includes a specific data input unit for inputting specific data indicating a character to be converted, a specific data storage unit for storing the input specific data, 2. The handwritten character recognition device according to claim 1, further comprising: specific data determination means for determining whether or not the input data includes the specific data. 3. The method according to claim 2, wherein the character specifying unit further includes a specific data erasing unit that deletes the specific data stored in the specific data storage unit, and a specific data updating unit that updates the specific data. Claim 1.
Or the handwritten character recognition device according to 2. 4. The control means, when the specific data determination means determines that the specific data is included, converts the character recognized by the handwritten character recognition means into a target character by the character conversion means. 4. The handwritten character recognition device according to claim 1, wherein control is performed to convert the handwritten character. 5. Handwritten character recognition for inputting a handwritten character, inputting a character in a handwritten character input character frame, recognizing the character, and displaying the recognized character in a recognition result display area to perform handwritten character recognition. In the character input method, after inputting a character for character recognition, specific data including a specific symbol or figure is input to the handwritten character input character frame, whereby the specific data is determined. A character input method for handwritten character recognition, wherein each character is converted into a target character. 6. A method of inputting specific data including the specific symbol or graphic into the handwritten character input character frame and determining the corresponding character as a character to be converted, comprises: 6. The handwritten character recognition according to claim 5, wherein the input is performed by overwriting the specific data including the specific symbol or the graphic, and the overwritten character is determined as a character to be converted. Character input method. 7. A method for inputting specific data including the specific symbol or graphic into the handwritten character input character frame and determining the corresponding character as a character to be converted, comprising the steps of: 6. The handwritten character according to claim 5, wherein the first input character is determined as a character to be converted by inputting specific data including the specific symbol or graphic into the next handwritten character input character frame. Character input method for character recognition. 8. A method of inputting specific data including the specific symbol or figure into the handwritten character input character frame and determining the corresponding character as a conversion target character, comprising the steps of: A character space for a next handwritten character input character frame, and when a character is input to the next handwritten character input character frame, the previously input character is determined to be a character to be converted. The character input method for handwritten character recognition according to claim 5.