JPS595385A - Handwritten character and graph recognizing device - Google Patents

Abstract

PURPOSE:To expands a range of recognition, by generating a KANA (Japanese syllabary) code every time a handwritten character is inputted on a tablet, and storing the input pattern in a memory according to the KANA code and adding the KANA code in candidates of a recognition result. CONSTITUTION:An input pattern writing circuit 7 when receiging a pattern regarding one pieces of character/graph input information sends the indication of the generation of a KANA code to a KANA code generating circuit 6. The KANA code generated by the KANA code generating circuit 6 and pattern data outputted from the input pattern writing circuit 7 are stored in an input pattern storage memory 8. The KANA code is sent through an OR gate 10 to a candidate selecting circuit 3 and registered right behind a standard code string sent from a recognition circuit 2. A standard code is sent to a standard pattern generating circuit 4 and the KANA code is sent to an input pattern reading circuit 9 and the input pattern storage memory 8. The outputs of the standard pattern generating circuit 4 and input pattern storage memory 8 are sent to a display 5.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a handwritten character/graphic input device, particularly to prevent misreading,
The present invention relates to a handwritten character/figure recognition device that can correct a rejection without using other input means when a rejection occurs.

[Prior art and problems]

FIG. 1 is a block diagram showing an outline of a conventional handwritten character recognition device. In FIG. 1, 1 is a tablet, 2 is a recognition circuit, 3 is a candidate selection circuit, 4 is a standard pattern generation circuit,
5 indicates a display device.

A conventional handwritten character recognition device is shown in Figure 1.

The nine handwritten characters written on the tablet 1 are processed by the recognition circuit 2, one or more candidates for the handwritten characters are extracted, and the standard code string of the candidate character is sent from the recognition circuit 2. It is sent to the candidate selection circuit 3. Candidate selection circuit 3
Then, the standard code of the first candidate character is selected from the sent standard code string, and the selected friend standard code is sent to the standard pattern generation circuit 4. Then, the standard pattern generation circuit 4 extracts a standard pattern corresponding to the standard code, and outputs and displays the standard pattern on the display device 5. Normally, when the operator wants to select the next candidate while looking at the content displayed on the display device 5, when the operator operates the keys provided on the tablet 1,
A candidate selection control signal is sent to the candidate selection circuit 3, and the next candidate character is selected. However, such conventional methods have a drawback in that candidates do not always contain 100% of the intended characters.

In addition, conventional character recognition devices simply recognize input friend characters, and if misreading or misreading occurs, input using another input method (e.g., kana-kanji conversion, code input, etc.). This method has the disadvantage that additional means must be provided within the device.

[Purpose of the invention]

The present invention eliminates the above-mentioned drawbacks, and is capable of reflecting 100% of the intended characters/figures in the output, even for handwritten letters/figures that cannot be recognized by conventional devices. The purpose of this invention is to provide a figure recognition device.

[Structure of the invention]

For this purpose, the handwritten character/figure recognition device of the present invention is provided.

Handwritten character/figure input means, candidate selection control signal generation means,
A recognition means that selects one or more candidate characters based on the character/graphic information inputted from the handwritten character/graphic input means and outputs a standard code of the selected candidate character, and a method of output from the recognition means. candidate selection means for holding a standard code of a candidate character to be selected and generating a standard code for a next candidate character when a candidate selection control signal is generated by the candidate selection control signal generation means; In a handwritten character/figure recognition device comprising a standard pattern generation means for converting a standard code into a standard pattern, and a display means for displaying the standard pattern outputted from the standard pattern generation means, the handwritten character/figure input is performed. an input pattern storage memory that stores an input pattern input from the means and a temporary code assigned to the pattern in association with each other;
A temporary code generation circuit that generates the temporary code, when receiving a pattern of one input character or one input figure, instructs the temporary code generation circuit to generate a temporary code and associates the input cover pattern with the temporary code. an input pattern writing circuit for instructing the input pattern to be written; an input pattern reading circuit for reading out a pattern corresponding to the temporary code from the input pattern storage memory when the candidate selection means outputs a temporary code; The present invention is characterized by comprising means for sending the pattern read from the pattern storage memory to the display means for displaying the pattern.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

Figure 2 shows 1 of the handwritten character/figure recognition device of the present invention.
FIG. 3 is a block diagram showing an embodiment. FIG. 3 is a diagram showing an example of a temporary code generation circuit used in the present invention.

FIG. 4 is a diagram showing an example of a code system.

In the figure, 1 is a tablet, 2 is a recognition circuit, 3 is a candidate selection circuit, 4 is a standard pattern generation circuit, 5 is a display device,
6 is a temporary code generation circuit, 7 is an input pattern writing circuit,
8 is an input cover turn storage memory, 9 is an input cover turn reading circuit, %10 and 11 are OR-Q gates, 12 is a correspondence table between temporary codes and input cover turns, 13 is a counter, and 14 is an RO.
Indicates M.

In Figure 2, the nine handwritten characters written on tablet 1 are /
The graphic information is Ia! It is sent to the input cover turn writing circuit 7 as well as to the input cover turn writing circuit 7. The g-sensing circuit 2 calculates 1 from the handwritten character/graphic information in the same way as the conventional one shown in Figure 1.
One or more candidates are extracted, and the standard code string of the candidate character/figure is sent to the candidate selection circuit 3 through the character/figure 10. In order to perform these processes,
The recognition circuit 2 is equipped with the same means as conventional ones, such as necessary dictionaries and candidate extraction means. Note that the candidate selection circuit 3 also has a section for storing a temporary code, which will be described later.

The input character/figure pattern information is sent to the input cover turn writing circuit 7.
When a pattern regarding input information of one character/figure is received, the temporary code generation circuit 6 is instructed to generate a temporary code.

The round board code generated by the temporary code generation circuit 6 and the pattern data output from the input cover pattern writing circuit 7 are correlated with each other and stored in the input cover pattern storage memory 8. It is sent to the selection circuit 3, sent from the recognition circuit 2, and registered at the end of the next standard code string. The candidate selection circuit 3 selects and outputs the standard code of the candidate character of the first rank every time the candidate selection control signal is sent from among the standard code string and temporary code. When the output code is a standard code, the standard code is sent to the standard pattern generation circuit 4, and when the output code is a temporary code, the temporary code is applied as an address to the input cover pattern reading circuit 9. , t7t This temporary code is also sent to the input pattern storage memory 8.

Note that when the temporary code is sent to the input cover turn reading circuit 9, the input cover turn reading circuit 9 sends a read signal to the input cover turn storage memory 8. When the standard code is sent to the standard pattern generation circuit 4, the corresponding standard pattern is sent to the display device 5 through the (or goo) 11 and displayed, and the temporary code is sent to the input cover pattern storage memory 8 and the input cover pattern reading circuit 9. When sent, tablet 1
9 on top! The pattern in the input cover pattern storage memory 8 in which the written handwritten character/graphic pattern is stored as is is read out by the input cover pattern reading circuit 9 and sent to the display device fii5 through the OR gate 11 for display.

For example, as shown in the correspondence table 12 between temporary codes and input cover patterns, when the temporary code "0001J" is selected, a 0 temporary code is generated in which the handwritten character pattern, for example, the handwritten character "A" is displayed. An example of circuit 6 is shown in FIG. The temporary code generation circuit includes a counter 13 that counts up in response to a write completion signal sent from the pattern write circuit every time one character or figure is input, and a counter 13 that counts up by a write end signal sent from the pattern write circuit, and codes other than standard codes (not registered in this device). When the standard code that is stored is written in JIS code, a code other than JIS code is written as a temporary code, and a 7tROM (read-only memory) 14 is provided, and the contents of counter 13 are stored at the specified address of ROM 14. Therefore, in the temporary code generation circuit, the counter 13 is counted up each time a write end signal is sent, and the data in the ROM 14 at the address according to the contents is successively issued as a new temporary code. Figure 4 shows an example of the code system.In the JIS Kanji code system, the Kanji code is 2.
It is a byte structure. The vertical direction indicates the first byte, and the horizontal direction indicates the second byte. And the horizontal direction is from XvAlv to
'FE', vertical direction from X V B o V to X'FB'
The rectangular code area specified by is allocated to the JIS code.

The temporary code consists of the code area shown in FIG.
A code in an area other than the area allocated to the JIS code is allocated.

As described above, the present invention generates a temporary code every time handwritten input is made on the tablet, stores the input cover turn in the input cover turn storage memory according to the temporary code, and
Since the temporary code is added to the recognition result candidates, it is possible to display not only characters but also figures that have not been converted into standard codes in an input pattern.

In the above explanation, the example of displaying the recognition results on a display device was given, but the processing of the recognition results is not only for displaying them, but also for storing them in a memory such as a floppy disk and displaying them on the next screen.
Various output processes such as printing can be applied.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, even if the intended character is not among the recognition result candidates (misreading, rejection, etc.), the input cover pattern can be displayed as if it were a recognition result. Therefore, you can type and display all nine correct characters without having to rewrite them. Furthermore, (
1) When you want to actively use cover turns (for example, as a sign).

(2) When a custom character (i.e., a character/shape other than the character type to be recognized) is input and there is no standard pattern for it (previously, there was no choice but to leave it blank; 113) I want to output the handwritten shape along with the character cases, etc. can be easily dealt with.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an overview of a conventional handwritten character recognition device, and FIG. 2 is a block diagram showing an outline of a conventional handwritten character/figure recognition device.
FIG. 3 is a block diagram showing one embodiment of the present invention, FIG. 3 is a diagram showing an example of a temporary code generation circuit used in the present invention, and FIG. 4 is a diagram showing an example of a code system. , 1...Tablet, 2...U identification circuit, 3...Candidate selection circuit, 4...Standard pattern generation circuit, 5...Display device. 6...temporary code generation circuit, 7...input cover turn writing circuit, 8...input cover turn storage mechanism, 9...input cutter/readout circuit, 10 and 11...OR gate , 12... Diagonal table of temporary code and input cover pattern, 13... Counter, 14... ROM0 Patent applicant Fujitsu Ltd. Representative Patent Attorney Yobu Kyotani

Claims (1)

[Claims] Handwritten character/figure input means, candidate selection control signal generation means,
A recognition means for selecting one or more candidate characters based on round character/graphic information input from the handwritten character/graphic input means and outputting a standard code of the selected candidate character; A candidate selection control signal is generated by the candidate selection control signal generation means, and the next candidate character is selected by the candidate selection means and the cough candidate selection means. A handwritten character/figure recognition device comprising: a standard pattern generation means for converting a standard code into a standard pattern; and a display means for displaying the standard pattern outputted from the standard pattern generation means; an input pattern storage memory that stores an input pattern inputted from the input pattern in association with a next temporary code given to the pattern; a temporary code generation circuit that generates the temporary code; and one input character or one input. When receiving a graphic pattern, the input cover pattern writing circuit instructs the temporary code generation circuit to generate a temporary code and writes the input cover pattern in association with the temporary code, and the candidate selection means outputs the temporary code. an input cover turn reading circuit for reading out a pattern corresponding to the temporary code from the input cover turn storage memory; and means for reading the pattern from the input cover turn storage memory and sending the pattern to the display means for displaying the pattern. Handwritten character/figure recognition device 0 characterized by the following: