JPH01253079A - Character recognizing device - Google Patents

Abstract

PURPOSE:To make a fixed pattern phrase consisting of plural character strings easy to input by providing character string input candidates for inputting a character string of >=1 character and a registration means which registers a character pattern and the character string or >=1 character in a correspondence means in correspondence relation. CONSTITUTION:This device is provided with a dictionary 10 of constitution which enables one pattern plural character string correspondence, the registration means 9 which registers characters in the dictionary newly, and an output means which outputs a corresponding character string according to a recognition result. The registration means 9 registers a certain fixed pattern phrase character string and a handwriting pattern indicating it in the dictionary 10 and when this handwritten pattern is handwritten, the character recognition device selects the dictionary pattern having the highest similarity in the dictionary 10. Then the output means outputs the dictionary pattern, i.e. the fixed pattern phrase character string made to correspond to the previously registered handwritten pattern. Consequently, a fixed pattern phrase is easily registered and inputted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention belongs to the technical field of handwritten character recognition, and particularly relates to a handwritten character recognition device suitable for registration and recognition in a fixed format.

[Conventional technology]

In conventional handwriting recognition devices, characters are recognized in the correspondence of one handwriting pattern to one character, as described in Japanese Patent Laid-Open No. 123177/1983.

[1ill the invention tries to solve! Problem] The above conventional technology does not take into account the ease of inputting standard directions, and even for standard directions that are frequently used in sentences, the problem is that handwriting patterns must be input for the number of characters included in the standard direction. was there.

An object of the present invention is to make it easier to input a fixed format consisting of a plurality of character strings.

[Means to solve the problem]

The above purpose is to provide a conventional character recognition device with a dictionary configured to handle one pattern → multiple character strings, a registration means for newly registering in this dictionary, and an output means for outputting a corresponding character string based on the recognition result. This can be achieved by providing .

[Effect]

A fixed character string, which is a registration means, and a handwritten pattern representing the string are registered in a dictionary. When this handwritten pattern is handwritten, the character recognition device selects the most similar dictionary pattern from the dictionary. The output means outputs a fixed-form character string associated with this dictionary pattern, that is, a handwritten pattern registered in advance. This makes it possible to register and input standard formats, which requires less effort.

〔Example〕

Hereinafter, as an example of the present invention, recognition of a fixed format orientation and,
A handwritten character string recognition device in which a user can register a fixed format will be explained using FIGS. 1 to 4. FIG.

FIG. 1 is a diagram showing its overall configuration.

First, the components necessary for character and standard orientation recognition will be explained.Tablet 1 reads input strokes as sample point coordinates for each unit time and outputs them to signal line 101. The stroke data compression device 2 approximates N points for each stroke and outputs the approximate pattern for one character to the signal line 102. The matching device 3 selects the n-book pattern most similar to the six-point approximation pattern received from the signal line 102 from the dictionary 8 via the signal line 103, and outputs its recognition code to the signal line 104. In the dictionary 8, a six-point approximation pattern of one handwritten character is registered in association with one recognition code. Here, if this recognition code is only a character code, the configuration described above is the same as the conventional method. However, in this embodiment, the recognition code includes a fixed format code in addition to the character code. The standard direction matching device 4 determines whether the recognition code received from the signal line 104 is a character code or a standard direction code, and if it is a character code, it outputs it as is to the signal line 110, and if it is a standard direction code. If so, a character code string corresponding to the standard code is read out from the standard dictionary 10 via the signal line 105 and output to the signal line 110. Standard dictionary 1
0, one fixed phrase character code is registered in association with the character code string of the characters included in the fixed phrase. The above is the configuration necessary for character/fixed phrase recognition.

In this embodiment, a code input device 5 such as a keyboard is also connected to the signal line so that character codes can be directly input without recognizing handwritten patterns.

Next, the components necessary for the user to register characters/fixed phrases will be explained.

The fixed phrase check device 6 receives the character code string to be uM from the signal line 106, determines whether to register one character or the fixed phrase depending on the length, and if one character is registered, sends a signal of the one character code. If a fixed phrase is registered, a code that can be distinguished from the character code is automatically generated as a fixed phrase code, and this is output to the signal line 107, and the character code string received on the signal line 106 is output to the signal line 107. Output.

The dictionary registration table @7 receives character/fixed phrase codes from the signal line 107, and also receives approximate patterns handwritten on the tablet l from the signal line 102 and approximated by the stroke data compression device 2, and associates them. signal line 10
8 to the dictionary 8. The fixed phrase registration device 9 receives a character code string of characters forming a fixed phrase from a signal line 106, receives a fixed phrase code from a signal line 107, and registers a fixed phrase via a signal line 109 so as to associate these. Register it in the dictionary 10.

FIG. 2 shows an example of registration of the dictionary 8 and the fixed phrase dictionary 10. For single characters, as in the past, the dictionary 8 associates approximate patterns of handwritten patterns with their character codes. For fixed phrases, the dictionary 8 has a correspondence between approximate patterns of handwritten patterns and their fixed phrase codes.Furthermore, the fixed phrase dictionary 10 has fixed phrase codes and character codes forming fixed phrases. columns are associated with each other.

FIG. 3 shows a procedure for recognizing characters or fixed phrases. First, in the same process 1 as before, the tablet 1, stroke data compression device 2, matching device 3, dictionary 8 shown in FIG.
The input pattern is recognized and a recognition code is obtained.

Next, in process 2 in FIG. 3, it is determined whether the recognition code obtained by the fixed phrase matching device 4 is a character code or a fixed phrase code. Character codes are usually expressed as IWORDs, but the range of codes used for single character codes is limited. Therefore, if the fixed phrase code is assigned to a code range different from the character code, the character/fixed phrase code can be easily determined.

In addition, the fixed phrase dictionary 10 is examined and a judgment is made as to whether the phrase is generally applicable or not. Alternatively, the determination can be made by externally specifying whether the mode is character recognition mode or fixed phrase recognition mode.

If it is determined to be a fixed phrase code in processing 2, in processing 3, the fixed phrase dictionary 10 is checked with the obtained fixed phrase code,
Read and output the fixed phrase character code string. Hello again,
If it is determined in process 2 that the code is not a fixed phrase code, the recognition code is a character code, so in process 4 the recognition code is output.

FIG. 4 shows the procedure for registering characters or fixed phrases by the user.

First, in process 1, the character code string of the character or fixed phrase to be registered is input. This may be input directly from the code input device 5 shown in FIG. 1, such as a keyboard, or may be input by hand using the handwriting pattern recognition described above.

Next, in process 2 in FIG. 4, the length of the input character code string is checked, and if it is one character, it is determined to be a one-character character code string, and if it is two or more characters, it is determined to be a fixed phrase registration.

This determination can also be made by externally specifying whether it is a single character registration mode or a fixed phrase registration mode.

If it is determined in process 2 that the phrase has been registered, a phrase code is automatically generated in process 3 and used as a recognition code.

By limiting the range of this code and keeping it separate from the range of character codes, the character /
It is easy to determine the fixed phrase code. Next, in process 4 in FIG. 4, the fixed phrase registration device 9 in FIG.
Register the character string obtained in step 3 so that it corresponds to the fixed phrase code generated in step 3. If it is determined in process 2 that one character is registered, in process 5 the character code obtained in process 1 is used as the recognition code.

Next, in process 6, the handwritten pattern of the character to be registered is input from the tablet 1 in FIG. 1, and the stroke data compression device 2 performs N-point approximation to obtain an approximate pattern. Finally, in process 7 in FIG. 4, the recognition code obtained in process 3 or process 5 and the approximate pattern obtained in process 6 are registered in the dictionary 8 so that they correspond.

Also, instead of process 6 in FIG. 4, read the display font string that you want to display in correspondence with the characters, and instead of process 7,
By registering recognition codes and display font strings in correspondence with each other in a font dictionary, it is possible to register non-standard characters using this character string registration input device.

〔Effect of the invention〕

According to the present invention, when creating a document using a handwritten character input device,
The hassle of inputting frequently used fixed phrases will be eliminated and efficiency will be improved. Quantitatively, once you register a fixed phrase,
In the case of N-character fixed phrases, the effort is reduced to 1/N.

In addition, when recognizing or registering by the user, the user can do it without specifying the mode, whether it is a single character or a fixed phrase, improving usability.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention, FIG. 2 is a diagram showing registered contents of a dictionary 8 and a fixed phrase dictionary 10, and FIG.
The figure is a character/fixed phrase recognition flowchart, and FIG. 4 is a character/fixed phrase registration flowchart. 1...Tablet, 2...Stroke smoothing device,
3... Matching device, 4... Fixed phrase matching device, 5... Code input device, 6... Fixed phrase checking device. 7... Dictionary registration device, 8... Dictionary, 9... Fixed phrase registration device, 10... Fixed phrase dictionary. Agent: Patent attorney Katsuma Ogawa, '+. (,' No. 20 83, No. 4

Claims (1)

[Claims] 1. A pattern input device for inputting a character pattern, a corresponding means for associating a dictionary pattern with a character string of one or more characters, and selecting the dictionary pattern most similar to the character pattern. A character recognition device comprising a matching device and an output means for outputting a character string corresponding to a selected dictionary pattern, a character string input device for inputting a character string of one or more characters, and a character string input device for inputting a character string of one or more characters; A character recognition device comprising a registration means for registering a string of characters or more in association with each other. 2. In claim 1, the registration means includes a code generation means for generating a code of a character pattern, a character registration means for registering a dictionary pattern and a code in correspondence with the corresponding means, and A character recognition device comprising a fixed phrase registration means for registering the code and the character string in correspondence. 3. The character recognition device according to claim 1, wherein the character string input device is provided with a character number determining means for determining whether an input character string is one character or two or more characters. 4. The character recognition device according to claim 3, further comprising the character number determining means having a mode specifying means for specifying a one character input mode and a character string input mode of two or more characters. 5. The character recognition device according to claim 2, further comprising code generation means for determining a code according to a user's designation. 6. The character recognition device according to claim 2, further comprising a code generation device that automatically generates the code. 7. In claim 3, the range of codes associated with a dictionary pattern associated with a character string of one character and the range of codes associated with a dictionary pattern associated with a character string of two or more characters must be such that they do not overlap. A character recognition device comprising a code generating means for generating a code. 8. In claim 3, in the case of a dictionary pattern to be associated with a character string of one character, a code for generating a code in the correspondence means such that the code associated with the dictionary pattern is the character code of the character string. A character recognition device characterized by being provided with a generating means. 9. Claim 3, characterized in that in the case of a dictionary pattern to be associated with a character string of one character, the correspondence means is provided with a fixed phrase registration means that does not register the correspondence between the code and the character string. Character recognition device. 10. A character recognition device according to claim 1, further comprising a character string input device for inputting a character string in its display font.