JP2578748B2 - Handwritten information processing method - Google Patents

Description

The present invention relates to a handwriting information device that recognizes and processes handwritten input information.

[Prior Art] Conventionally, in a device for inputting handwritten characters on an input tablet with a stylus pen or the like and recognizing the input characters, generally, an input sheet indicating an area for handwritten input or the like is placed on the input tablet, Handwriting is sequentially input in accordance with the cells on the placed sheet.

[Problems to be Solved by the Invention] In this type of apparatus, when a document which is generally input by handwriting is recognized and a document is created / edited, the recognized character information is temporarily stored in a memory or the like.

However, since it is assumed that the recognition information stored in the memory or the like is not changed, even if the input result is determined to be erroneous recognition, the previous recognition result cannot be easily corrected and the recognition result cannot be easily recognized. In order to correct a misrecognized character, for example, it is impossible to correct a character only after all the recognition results have been erased once, very complicated control is inevitable.

[Means for Solving the Problems] The present invention solves the above-described problems, and after handwritten input,
It is an object of the present invention to provide a handwritten information recognition method capable of easily rewriting information stored and recognized in storage means.

Then, the following configuration is provided as one means for achieving such an object.

That is, a handwriting information processing apparatus comprising: input means for inputting handwritten information; recognition means for recognizing handwritten information input by the input means; and display means for displaying character information recognized by the recognition means. Determining means for determining an area in which the handwritten information has been input;
If the area in which the handwritten information is input is a character input area, the character information obtained by recognizing the handwritten information is displayed in addition to the already displayed character information, and the handwritten information is displayed. If the input area is an edited character input area that is set separately from the character input area, the character information specified as the edited character in the character information displayed in the character input area, Control means for controlling the display so as to replace the character information obtained by recognizing the handwritten information.

[Operation] In the above configuration, when a part of the character information recognized by the recognition unit is edited, the display method of the character information can be switched according to the input area of the handwritten information.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an embodiment according to the present invention.
In the drawing, reference numeral 1 denotes a tablet for detecting the input position coordinates of a character or character modification information input by handwriting with the input pen 1a; 1a, an input pen for inputting a handwritten character on the tablet 1; A character image is formed based on the input coordinate signal, and the input character image is converted into an internal code such as a JIS code. Reference numeral 3 denotes an input area recognizing unit which recognizes the coordinate position of the character input by the tablet 1, and determines an area indication flag bit. Reference numeral 4 denotes a character processing / editing unit for making and correcting a document based on the internal codes output from the character recognizing unit 2 and the input area recognizing unit 3. Reference numeral 5 denotes a character output control unit which converts a character code of a document or the like edited and created by the character processing / editing unit 4 again as a character image and sends it to the CRT 8. Reference numeral 6 denotes a keyboard controller that controls the keyboard 7, and starts and stops the apparatus according to the present embodiment in accordance with various commands input from the keyboard 7 necessary for document creation and editing. Reference numeral 9 denotes a document buffer for storing character information recognized by the character processing editing unit 4, and reads / writes data from / in an area designated by a document buffer address register (AR) 4a in the character processing editing unit 4. . The document buffer 9 has a configuration in which the address 1 has a capacity of 16 bits, and stores information for one character of a character code described later in the address 1.

 The structure of the document buffer 9 is shown in FIG.

In this embodiment, a document which determines the input position and input format of handwritten characters is placed on the tablet 1, and characters are input in accordance with the input format on this document.

FIG. 2 shows an example of this document. In the figure, reference numeral 10 denotes an original, reference numeral 11 denotes a character input box divided for each cell, and reference numeral 12 denotes an area outside the character input box 11 outside the character input box.

Hereinafter, the control operation when the document 10 shown in FIG. 2 is placed on the tablet 1 of the present embodiment having the above configuration and text information is input by inputting handwritten characters will be described. The flowchart shown in FIG. It will be described with reference to FIG.

When inputting the document information, the document buffer address register (AR) 4a and the document buffer 9 in the character processing / editing section 4 are first cleared in step S1, and the process proceeds to step S2. Here, the operator waits for the operator to input a handwritten character into the character input area 11 or the out-of-character-frame area 12 of the document 10 placed on the tablet 1 with the input pen 1a. In step S3, the tablet 1 sequentially sends the input position coordinate information to the character recognition section 2 and the input area recognition section 3. The character recognition unit 2 recognizes a character based on the input coordinate signal by a feature extraction method or a pattern matching method, converts the character code into an internal code, for example, a 16-bit JIS code, etc. Output to 4.

On the other hand, the input area recognizing section 3 recognizes the area input by the input pen 1a on the document 10 based on the input coordinate signal, and outputs the recognition result to the character processing editing section 4.

FIG. 5 shows a configuration example of the internal code output from the character recognition unit 2.

Fig. 5 shows JIS-C6226 extended based on JIS-C6228.
Although an example of 1 character / 16 bit using the kanji code system for information exchange is shown, the character code is not limited to this and can be an arbitrary code.

FIG. 6 shows an example of the input area identification code output from the input area recognition unit 3.

As shown in the figure, the identification code has a 16-bit configuration,
Bits 1 to 15 are an area designating section for designating an input area on the document 10, and Bit 0 is an area designating flag (hereinafter referred to as RF) indicating whether the area designated by the area designating area is the area 12 outside the character frame or the character input frame area 11. If the RF is "0", the character input box area 11 is input. If the RF is "1", the area 12 outside the character box is input.
Indicates that this is an input to

In step S3, the character processing / editing unit 4, which has received the input information from the character recognition unit 2 and the input area recognition unit 3, first checks the RF in step S4, and sets the RF to "0", that is, the character input frame area.
If the input is within 11, the process proceeds to step S5, where the content of the document buffer address register (AR) 4a is set to a value corresponding to the designation information of the region designation unit sent from the input region recognition unit 3, Proceed to step S6. Here, 1 of the character input box
The square is an input area for one character, and a character input box 11a at the upper left of FIG. 2 has AR = 1 and a value corresponding to the character input box into which a value added one by one for each digit is input. Become.

On the other hand, if the input is to the area 12 outside the character frame in step S4, the process immediately proceeds to step S6.

The document buffer address register (AR) 4a has a capacity of 16 bits, and can specify addresses from "0" to a maximum of "FFFF". FIG. 7 shows the configuration of the document buffer address register (AR) 4a.

Therefore, the character information input to the character input box area (11) is stored in the document buffer 9 corresponding to the input character input box position, and the character input to the character input box area 12 affects the input position. Instead, they are stored in place of the characters in the document buffer 9 indicated by AR4a at the time of input. That is, the recognition character input immediately before is replaced with the recognition character input to the out-of-character-frame area 12, and is corrected.

Then, the operator judges whether or not the input is completed in step S7,
If the input is not completed, the process from step S2 is executed again to input the next character from the tablet 1, and if the input is completed, the "input complete" key (not shown) on the keyboard 7 is input at step S8. , And the process ends.

In the above description, the recognized characters input in step S6 are stored in the document buffer 9, and the input character information stored in the document buffer 9 is automatically read out by the character output control unit 5. , Displayed on CRT8.
At this time, a well-known cursor is displayed below the display of the recognition data of the address indicated by the document buffer address register AR4a in the character processing editing section 4. The above-described character display processing is well-known, and a description thereof will be omitted.

As described above, by writing correction characters outside the margins of the manuscript paper, the characters can be corrected without performing any other special correction procedure.

As described above, according to this embodiment, a correction input to correct input information is performed only at an arbitrary position outside the normal input designation area, and the input information is automatically determined to be a correction input. Therefore, it is possible to provide a handwritten information processing apparatus having a very simple correction operation.

[Effects of the Invention] As described above, according to the present invention, is the area in which handwriting information is input a character input area or an edited character input area set separately from the character input area? Thus, the display method of the recognition result of the handwritten information can be switched, so that a complicated operation of designating the display method by a command or the like is not required, and the operability is improved. Furthermore, since the edit character input area for inputting new handwritten information to correct the already input character is set separately from the character input area, the input screen is displayed by the already input character. There is no inconvenience, such as difficulty in seeing, and it is possible to compare the already input character with the newly input handwritten information and compare them, so that it becomes easy to accurately input the corrected character.

[Brief description of the drawings]

FIG. 1 is a block diagram of one embodiment according to the present invention, FIG. 2 is a diagram showing an example of a format of a manuscript sheet used on a tablet of this embodiment, and FIG. 3 is a flow chart for controlling input character recognition in this embodiment. FIG. 4 is a detailed view of the document buffer of the present embodiment, FIG. 5 is a diagram of a character code used in the present embodiment, FIG. 6 is a diagram of an input area identification code of the present embodiment, FIG. FIG. 3 is a configuration diagram of the document buffer address register of the present embodiment. In the figure, 1 ... tablet, 1a ... input pen, 2 ... character recognition unit, 3 ... input area recognition unit, 4 ... character processing recognition unit, 4a ... document buffer address register, 5 ... character output control unit, 6
... keyboard controller, 7 ... keyboard, 8 ... CR
T, 9: Document buffer, 10: Manuscript, 11: Character input frame, 12
... area outside the character frame.

Claims (1)

(57) [Claims] 1. A handwritten information processing method for inputting handwritten information, recognizing the input handwritten information, and displaying character information obtained by recognizing the handwritten information, The area in which the information is input is determined. If the area in which the handwritten information is input is a character input area, the handwritten information is recognized in addition to the already displayed character information. Display the character information obtained by
If the area in which the handwritten information is input is an edited character input area set separately from the character input area, the character information specified as the edited character in the character information displayed in the character input area A character information obtained by recognizing the handwritten information, and displaying the character information.