JPH087034A - Handwritten character recognition and input system - Google Patents

Abstract

PURPOSE:To provide a device for recognizing and inputting a handwritten character capable of handwrite-inputting with a feeling like writting to a paper. CONSTITUTION:At the time of inputting a document by handwritten characters, when a user starts to write a character at a position he/she desires to input with a pen, on a tablet 102a integrally formed at the screen of a display, a frame control means 107 displays plural input frames which are formed larger than a recognizing character at the position so as to input a handwritten character. At this time, a coordinate detection means 103 detects the handwritten character inputted in the input frames as coordinate data consisting of the up/down dots of the pen so that coordinate data is stored in a coordinate data storage means 104. At this time when completing the handwriting-input of the first one character with the pen and starting to write a second character in a next input frame, a character recognition means 106 refers to a character recognition table 105 and converts a handwritten character corresponding to on input frame to a recognized character so as to display, and the frame control means 107 erases the input frame corresponding to the recognized character and successively adds and displays the input frame of the same size along the same line/string with the recognized character.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handwriting character recognition input device such as a word processor equipped with a display-integrated tablet, a personal computer capable of document processing, a workstation, a mobile terminal, an electronic notebook, and the like. The present invention relates to a handwriting character recognition input device for inputting handwritten characters on a screen using an input frame for input.

[0002]

2. Description of the Related Art Conventionally, as this type of handwritten character recognition input device, for example, a handwritten character input word processor for inputting characters has been known. This is equipped with a display-integrated tablet consisting of a transparent digitizer provided on the screen of the display unit and a pen for inputting coordinates on the display-integrated tablet. When handwritten characters are sequentially input with a pen in a character frame (input frame) provided in a grid pattern on the entire surface of the display unit, the recognition unit recognizes the handwritten character under the control of the processor. Then, when an editing key such as correction, deletion, insertion, or kana-kanji conversion is operated on the recognition result, the editing process is performed, and the result is displayed on the display unit in place of the handwritten character. However, since a grid-shaped input frame for inputting is displayed on the entire screen of the display unit, it is difficult to read because the character written with the pen is a handwritten character in this input frame, and the recognition character ( There is a drawback that it is difficult to read (typed characters) due to the grid-shaped input frame.

Further, a cursor is displayed at the input position on the display unit, and handwritten characters are input in an input frame displayed at a position unrelated to the cursor, and when the input is completed, the input end key is pressed. In some cases, the characters written in the frame are recognized, and the type characters that are the recognition results are displayed in front of the cursor. However, since the characters and cursor that have already been input are far away from the input frame for inputting the characters, it is difficult to connect the sentences and it is not easy to check the characters that have already been input, so you can input handwritten characters efficiently. There was a problem that I could not. Further, this becomes more remarkable as the display screen becomes larger and the display characters increase.

Therefore, as a prior art to improve the above problem, an input frame for handwritten characters is provided near the display of recognized characters, and when the characters are recognized, the input frame is sequentially moved, so that the flow of the sentence is changed. Among them, a handwritten character input device that allows natural input is proposed (Japanese Patent Laid-Open No. 4-347721).
(See the official gazette).

As another conventional technique, if it is determined that the pointing position of the pen is outside the character frame (input frame) and a character is displayed in the input frame, the character is edited. , If the pointing position of the pen is outside the input frame and no characters are displayed in the input frame, the input frame is moved to the pointing position of the pen. There has been proposed a handwriting character recognition input device that can perform editing such as kana-kanji conversion only by operation and uses an automatic input frame in which an arbitrary character can be input (Japanese Patent Laid-Open Nos. 1-137318 and 1- 1). 1
(See Japanese Patent No. 37319).

Further, as another conventional technique, the size of a handwritten character first input in a free format to the character size, the input direction and the input interval between a first character and a second character subsequently handwritten. A text input device has been proposed which determines horizontal / vertical writing, character spacing, and automatically sets a format, and displays an input frame for handwriting input based on the set character size and character spacing (Japanese Patent Laid-Open No. 62-62). -15
9291).

[0007]

However, in JP-A-1-137318 and JP-A-137319, since the input frame is on the right side of the character input position, the recognized characters are not hidden and the paper is not hidden. You can input as if you were writing, but since the input frame is set to about the same size as the printed characters, it becomes difficult to input as handwritten characters, and the character recognition rate also decreases depending on the size of the input frame. I couldn't say that I could write sentences efficiently.

In Japanese Patent Laid-Open No. 4-347721, the character input frame is larger than the typed characters, so it is easy to input as a handwritten character, but since it is not on the right side of the input character, it feels like writing on paper. I couldn't say that I would write by hand.

In Japanese Laid-Open Patent Publication No. 62-159291, the first character and the second character, which are freely input in free format, can be used for formatting when creating a sentence, but from the third character, the character size is almost the same as that of a print character. Since it is necessary to input the handwritten character in the input frame because it is set to, it is difficult to input the handwritten character and the character recognition rate is lowered, so that it cannot be said that the sentence can be efficiently created.

Further, in JP-A-1-137318, JP-A-137319, and JP-A-4-347721, there are the following problems. (1) Even if the pen is up for a certain period of time, it is not considered that the handwriting input has ended. Therefore, the user needs to give an instruction to end the handwriting input by some method, and the operation is complicated. (2) Since the size of the input frame cannot be adjusted, handwriting input according to the user's preference cannot be performed. Further, when the input character area becomes small, it becomes impossible to input handwritten characters. (3) Since the structure is not such that it can correct the character input start position when it is incorrect, the work for correcting it is very inconvenient.
For example, there is a method in which the input of the character is terminated while being erroneously made, the handwriting input mode is exited, the erroneous character is erased by another character erasing means, and the handwriting input mode is returned to.

The present invention has been made in consideration of the above circumstances. By selecting and displaying an input frame of a size suitable for handwriting input immediately adjacent to a character that has already been input, according to the user's preference, Provides a handwriting character recognition input device that improves the operability of the user because it realizes to write handwriting input with a pen as if writing on paper, and has a function that automatically ends with pen operation and an input position correction function To do.

[0012]

FIG. 1 is a block diagram showing the basic construction of the present invention. In the figure, the present invention has a pen 101 for inputting handwritten characters and a tablet 102a integrally formed on the screen, and provides a plurality of input frames for character recognition when handwritten characters are drawn on the tablet by the pen. Display means 102 for displaying the handwritten character and the recognized character sequentially input to the input frame, and detecting the up / down signal of the pen and detecting the handwritten character input to the input frame as coordinate data composed of dots. Coordinate detecting means 103, and coordinate data storing means 10 for storing the detected coordinate data.
4 and various coordinate data and a recognition character based on a predetermined format are stored in advance in association with each other.
And a character recognition means 106 for converting the coordinate data input by referring to the character recognition table 105 into a corresponding recognized character and outputting it to the screen, and the pen 10
1 and a tablet 102, when inputting a handwritten character, a frame control for arranging a plurality of input frames formed in a size larger than a recognition character to be output on the screen along the same row / column as the recognition character Means 107, and when the character recognition means 106 converts a handwritten character corresponding to one input frame into a recognized character, the frame control means 10
Reference numeral 7 is a handwriting character recognition input device characterized in that an input frame corresponding to the recognized character is erased and an input frame of the same size is additionally displayed next to the input frame which is already displayed.

According to the above configuration, when a document is input by handwritten characters, when the user starts writing a character on the tablet 102a in contact with the display screen of the display device 102 at a position desired to be input with the pen 101, the frame control means 107 A plurality of input frames larger than the recognized characters are displayed at that position, and handwritten characters can be input. At this time, the handwritten character input in the input frame is detected by the coordinate detection unit 103 as coordinate data made up of dots and stored in the coordinate data storage unit 104. Here, when the handwriting input of the first character by the pen 101 is completed and the second character is started to be written in the next input frame, the character recognition means 106 refers to the character recognition table 105 and handwrites the first character. Converts characters to recognized characters and displays them. Next, the frame control unit 107 erases the input frame corresponding to the first character and sequentially adds and displays the input frames having the same shape next to the input frame that is already displayed. Therefore, an input frame of a size suitable for handwriting input is displayed next to the characters that have already been input, so that it is possible to realize handwriting input as if writing on paper.

If a configuration is further provided with a clocking means 108 for receiving a pen up / down signal from the coordinate detecting means 103 and measuring the pen up time, the frame control means 107 causes the pen 101 to move up / down. The signal determines whether or not the pen 101 has entered a character in the next input frame after the character has been input, and determines that the input of the character has ended when the timed up time of the pen has exceeded a predetermined time. It can be configured to delete all input boxes displayed as. Therefore, if the pen is up for a certain period of time, it is automatically regarded as the end of handwriting input.
The user's operability is improved because there is no need to instruct the end of handwriting input.

If a frame size table 109 storing the plurality of input frames in correspondence with numbers / symbols according to size and a size selection instructing means 110 are further provided, the frame control means 107 selects the size. Instruction means 110
With this, it is possible to provide a function of changing the size of the input frame to a plurality of types. Therefore, the size of the input frame can be changed according to the preference of the user.

Dot counting means 111 for counting the number of dots of the coordinate data output from the coordinate detecting means 103 when a handwritten character is input in the input frame by the pen 101, and dot counting when the pen 101 is up. Coordinate data control for determining whether or not the number of dots counted by the counting means 111 has reached a reference value and invalidating the coordinate data of the input handwritten character when the number of dots has not reached the reference value. It is preferable to further include the means 112. According to the above configuration, when the character input start position is erroneously moved down by the pen 101 and the number of dots counted by the dot counting unit 111 is less than or equal to the reference value, the coordinate data control unit 112 determines that the dot is invalid. It is possible to write again by moving the pen down to a predetermined position in the input frame. Therefore, even if the pen is once lowered to the wrong position, it can be easily corrected and rewritten up.

In the present invention, the pen 101 is used as a pointing device in combination with the tablet 102a. As the display device 102, LC
A D (liquid crystal display) device, a CRT display device, an EL display device, or the like is used, and a tablet 102a including a transparent digitizer is provided in contact with the screen. Further, a keyboard is used as the size selection instructing means 110, and key input operation such as size selection instruction of the input frame can be performed.

Coordinate detection means 103, coordinate data storage means 104, character recognition table 105, character recognition means 10
As the frame control unit 107, the clock unit 108, the frame size table 109, the dot count unit 111, and the coordinate data control unit 112, a microcomputer including a CPU, a ROM, a RAM, a timer, and an I / O port is used. Particularly, as the coordinate data storage means 104,
Normally, the RAM therein is used, and the character recognition table 1
05, RO in the frame size table 109
M is used. Further, as the time measuring means 108, a timer therein is used. F as an auxiliary storage device
It is preferable to include a D (floppy disk) device and an HD (hard disk) device. Further, by further including a gesture command table and a gesture command determination unit, a gesture editing function by handwriting with a pen becomes possible.

[0019]

The present invention will be described in detail below based on the embodiments shown in the drawings. The present invention is not limited to this. INDUSTRIAL APPLICABILITY The present invention is mainly suitable for a word processor equipped with a display-integrated tablet, a personal computer capable of document processing, a workstation, a mobile terminal, an electronic notebook, etc., and each component uses an input frame for character recognition. It can be used as a handwritten character recognition input device having a normal handwriting editing function in addition to achieving an improvement in the efficiency of writing sentences by handwritten characters.

FIG. 2 is a block diagram showing an embodiment of the handwritten character recognition input device of the present invention. In the figure, reference numeral 1 denotes a display device composed of an LCD (liquid crystal display), which displays input handwritten characters, recognized characters, an input frame and the like on a screen. Reference numeral 2 denotes a tablet which is integrally formed on the screen of the display device 1 and which is composed of a transparent digitizer for scanning the screen of the electrostatic induction system, the magnetic induction system or the like. Reference numeral 3 denotes a pen for inputting coordinate data (handwritten characters, etc.) on the surface of the tablet 2 by pointing operation such as pen down, pen up, pen drag (drawing locus). Reference numeral 4 is a keyboard for inputting key codes such as screen call and frame size setting.

A RAM 5 is a pen coordinate buffer 5a for storing coordinate data pointed to by the pen 3 on the tablet 2, a recognition result buffer 5b for storing character codes recognized by the recognition logic, and a created document. A document buffer 5c for storing data and a work buffer 5d for storing data to be temporarily processed. Reference numeral 6 denotes a ROM, which is a frame size table 6a storing various vertical / horizontal sizes of input frames, a character recognition table 6b, a control program 6c for operating the handwriting recognition character input device of the present invention, for example, recognition of handwritten characters. Recognition logic (RL) and pen handler (P
H), frame display handler (DH1), coordinate point display handler (DH2), character display handler (DH3), frame check handler (WH), and other control programs are stored. Here, the description of each control program 6c will be described later, and will be omitted.

Reference numeral 7 is a CPU for controlling this apparatus. CP
U7 takes in the coordinate data of the locus drawn by the pen 3 from the tablet 2 in the input frame displayed on the screen of the display device 1, sets the fetched coordinate data in the pen coordinate buffer 5a, and recognizes the recognition logic of the control program 6c. (RL) is started. The CPU 7 uses the recognition logic (RL) to
The character recognition table 6b is referred to for the coordinate data, and the recognition result (recognized character code) is controlled to be output to the recognition result buffer 5b. Further, the CPU 7 achieves the efficiency improvement of the sentence creation by the handwritten character of the present invention by using the input frame for character recognition by the control program 6c. R on the device
It is preferable that an FD (floppy disk) device and an HD (hard disk) device are provided as auxiliary storage devices for AM5 and R0M6. Further, it is preferable to include a printing device such as a thermal transfer printer or a laser printer.

FIG. 3 is an explanatory diagram showing an example of the vertical and horizontal sizes of the input frame stored in the frame size table. The frame size table 6a stores various vertical / horizontal sizes of input frames used for changing the frame size. 4 is an explanatory diagram showing a display example of a setting screen for setting the size of the input frame. When the user selects the frame size from the setting screen, the actual size is read from the frame size table 6a. At this time, the keyboard 4 is used as a key input operation when setting the frame size.

FIG. 5 is a schematic flowchart showing an operation procedure for setting the frame size on the setting screen of FIG. 5, the setting screen of FIG. 5 is called by the keyboard 4, and first, on the setting screen of FIG. 5, the user determines which frame to select and performs key input. The value shown in FIG. 3 is set in the register D1 (frame width) / D2 (frame length) depending on whether the key code output by this key input is 1, 2, or 3. D1 / D2 is used when handwriting input in the next step. Therefore, when handwriting input according to the user's preference,
Since it is possible to select and display an input frame that is easy to input as handwritten characters, it becomes possible to input as if writing on paper, and sentences can be efficiently created.

FIG. 6 is an explanatory diagram showing an embodiment of the structure of the pen coordinate buffer. 6, PBSTAT, PBPTR: Pointer on the pen coordinate buffer 6a is shown. Character start command (MST): represents the beginning of one character. Stroke start command (SST): represents the start of one stroke (one stroke). -Stroke end command (SEND): Indicates the end of one stroke (one stroke) -Character end command (MEND): Indicates the end of one character

The pen coordinate buffer 5a is composed of commands (character start / stroke start / stroke end / character end) and XY coordinate data. Start stroke + (X
Y to XY) + stroke end is 1 stroke (1
Stroke), character start + (stroke start +
(XY to XY) + stroke end) + to + (stroke start + (XY to XY) + stroke end) + character end represents all strokes of one character. When the handwritten input XY coordinate point sequence + command is written in the pen coordinate buffer 5a and the recognition logic (RL) is activated, the recognition result (character code) is output from the recognition logic (RL) to the recognition result buffer 5b.

FIG. 7 is an explanatory view showing an embodiment of a handwritten character input screen according to the present invention. In FIG. 7, when writing a document by handwriting, when a character is started to be written on the tablet 2 in contact with the display screen of the display device 1 at a position to be input with the pen 3 (FIG. 7A), a plurality of characters are written at that position. The handwriting input frame is displayed (FIG. 7B), and handwritten characters can be input (FIG. 7C). Enter 1 character and 2 in the next box
When writing the first character (Fig. 7 (d)), the first frame disappears and the recognition result (character) is displayed (Fig. 7 (e)), 2
You can enter the character. Further, when a recognized character is displayed and a certain period of time elapses with pen-up in the second frame without pen-down, it is considered that character input is completed, and the frame automatically disappears (FIG. 7 (f)).

FIG. 8 is an explanatory diagram showing the relationship between the display position of characters and the display position of the input frame. In FIG. 8, MO
JISTATX / MOJISTATY is the XY coordinate (dot coordinate system) indicating the upper left of the display position of the input frame. CHRST
AT indicates the leftmost pointer of the recognition result character string display, and represents the column position of the character coordinate system. Further, CHRPTR is a pointer indicating the delimiter between the first character and the second character. FIG. 9 shows the upper left coordinates (D3X, D3Y) of the input frame and the vertical size (D1).
It is explanatory drawing which shows / horizontal size (D2).

10 and 11 are flow charts showing the control processing for handwriting input according to the present invention. Next, before explaining the actual handwriting input according to the flowcharts of FIGS. 10 and 11, various control programs 6c prepared in R0M6 of FIG. 2 will be described. The alphanumeric character string represents the register name.

[Recognition logic (RL)] As described above, the character recognition table 6b is referred to by outputting the character code of the recognition result by setting and starting the coordinate data of the character in the pen coordinate buffer 6a. To do. -[Frame display handler (DH1)] Input: D1 (frame width), D2 (frame height), D4 (display O)
N / OFF / CLEAR), D3X (frame display upper left X coordinate), D3Y (frame display upper left Y coordinate) Function: When D4 is ON, with D3X / D3Y as the base point,
The vertical D1 / horizontal D2 input frame is displayed. When D4 is OFF, the above frame is deleted. When D4 is CLEAR, the inside of the frame is cleared (the frame is not erased).

[Coordinate point display handler (DH2)] Input: X, Y Function: Lights the display dot at the XY coordinate position. -[Character display handler (DH3)] Input: CHRPTR (character display position, see FIG. 8), CH
RCODE function: Code CHRCO at the display position indicated by CHRPTR
Display the letters DE.

[Frame check handler (WH)] Input: D1, D2, D3X, D3Y, X, Y Function: Pen-down coordinate (X, Y) is upper left coordinate (D3
X, DEY) / Vertical D1 / Horizontal D2 inside or outside the frame is checked. Output: W = 1N (inside the frame), W = OUT (outside the frame)

[Pen handler (PH)] Function: Senses the UP / DOWN state on the tablet. Also, the XY coordinates (pen coordinates) at that time are output. Output: P = UP (pen up), P = DOWN (pen down), (X, Y) = pen coordinates on the tablet

Next, the flowcharts of FIGS. 11 and 12 will be described with reference to FIGS. In FIG. 11, step S1: the pen handler (PH) is activated, and the pen is put on the tablet 2 in a waiting state (waiting for a character to be drawn by the user, FIG. 7).
(See (a)). When the pen 3 is moved down (P = DOWN), a transition is made to the phase (processing stage) of step S2. Step S2: Character display position pointer (CHR on display
Initialize PTR (CHRPTR = CHRSTA
T). Next, in D3X and D3Y, the coordinates (M
OJISTATX, MOJISTATY) is set (see FIG. 8), and ON is set to the input parameter D4 of the frame check handler (WH).

Step S3: Frame check handler (W
H) is started, and the pen-down coordinate is vertical D1 from the upper left of the display.
/ Determine whether or not it is within the range of horizontal D2. If it is outside the frame range, the process proceeds to step S4, and if it is within the range, the process proceeds to step S5. Step S4: Wait until the pen is lifted up Step S
Return to 1. Step S5: The first input frame is displayed in the upper left of the screen according to the parameters set in step S2 (see FIG. 9) (the left frame in FIG. 7B is displayed). Steps S6 and S7: The second frame is displayed (the right frame in FIG. 7B is displayed).

Step S8: After the pointer (PBPTR) of the pen coordinate buffer is initialized (PBPTR = PBS)
TAT), character start command (MST) and stroke start command (SST) are set (written), and PBP is set.
Increase TR by that amount (2N). Here, 0 is set to a retry counter (PTYCNT) described later. Steps S9, S10, S11: While the pen is down, the pen coordinates (XY coordinates output from PH) are written in the pen coordinate buffer 5a and the pointer is moved up. The dot dot sequence at the corresponding position on the display is turned on (the handwriting of the user is displayed as the dot dot sequence, see FIG. 7C). The pen moves up in step S9 (end of one stroke)
Then, the process proceeds to step S12. Step S12: It is determined whether or not there is a next pen down, and if there is a pen down, the process proceeds to step S13.

Step S13: The pen-down coordinate XY is 2
If it is within the range (see FIG. 7D), the process proceeds to step S14. If it is out of the range, the process proceeds to step S21. Steps S21 and S22: The frame width (D2) is subtracted from D3X, the frame check handler (WH) is activated, and it is determined whether or not the pen-down coordinate (X, Y) is in the first frame. If so (the next one image within the same frame), the process proceeds to step S24. If it is not included (it does not belong to the first frame or the second frame), the process proceeds to the invalidation process of step S23.

Step S23: Treat as an error, wait for pen-up, transition to step S12, and wait again for pen-down. Step S24: Another stroke in the same character (one stroke)
And write a stroke end command (end of current stroke: SEND) / stroke start command (start of next stroke: SST) to the pen buffer,
The process proceeds to step S9, and the pen-up waiting state is entered. Steps S14 and S15: D3X (pointing to the beginning of the second frame) is subtracted from D3 (frame width) of the first frame, so D
4 is set to OFF and the frame display handler (DH1) is activated to erase the first frame (FIG. 7).
(See (e)).

Steps S15, S16: D2 × to D3X
The second frame is displayed by adding 2 (frame width × 2), setting D4 to ON and activating the frame display handler (DH1) (see FIG. 7E). Step S17: Stroke end command (SEND) / character end command (MEN) in the pen coordinate buffer 5a.
D) is written and the pointer is raised. With this,
Setting of the pen coordinate buffer 5a shown in is completed,
The recognition logic (PR) is ready for activation.

Step S18: The recognition logic is activated. Step S19: DH3 is started. The character "A") of CHRCODE (output of DH3) is displayed at the position of CHRPTR (see FIG. 7 (e)). Step S20: Increase CHRPTR by 1, return to step S8, and proceed to the processing of the next character.

Next, the pen input time-out processing function will be described with reference to steps T1 to T8 shown in FIGS. Step T1: When the pen is moved up in step S9 (the pen is moved up after drawing one image), TINUP (constant) is set in the counter TIMCNT for counting the timeout time. Steps T2 and T3: As long as the pen-up state continues in step S12, TIMCNT is subtracted and it is monitored whether or not it becomes 0. When TINCNT becomes 0 at step T3, it is considered that pen-up has continued for a certain period of time, and step T
Transition to 4.

Steps T4, T5: Erase the 1st frame / 2nd frame (FIG. 7 (f)). This is the same as the processing in steps S14 to S16. Step T6: The processes of steps S17 to S20 are performed. Steps T7 and T8: Wait for pen down, set D4 to ON and return to step S3 (return to waiting for user input). Therefore, if the pen is up for a certain period of time, it is automatically regarded as the end of the handwriting input, and there is no need to instruct the end of the handwriting input, and the operability for the user can be improved.

Next, the function of correcting the character input position will be described according to steps R1 to R4 shown in FIG. FIG. 12 is an explanatory diagram showing an example of a correction operation of the character input start position. As shown in FIG. 12, when the character "U" is to be written in the frame, the pen needs to be moved down near P, but it is assumed that the pen is accidentally moved down near Q. At this time, when the pen is immediately moved up without moving the pen with a certain number of dots, the locus of Q is erased and rewriting is enabled.

In step S8, RTYCNT (retry counter) is initialized to 0. Step R1: As long as the pen continues to move in the down state and continues to display the trajectory of the pen, RYTCNT is incremented by one. Therefore, when the pen is up,
The number of dots for which the pen is down is set in RTYCNT. Step R2: If the number of dots counted by RTYCNT is smaller than the reference value (3 dots), it is judged that the rewriting is performed. Step R3: Clear the contents of the first frame. Step R4: Wait for re-input. Therefore, even if the pen is once moved to the wrong position, it can be rewritten easily by revising it.

[0045]

According to the present invention, the following effects can be obtained. (1) By displaying an input frame of a size suitable for handwriting input just to the right of the input character, it is possible to realize handwriting input as if writing on paper. (2) When the pen is up for a certain period of time, it is automatically regarded as the end of the handwriting input, so there is no need to instruct the end of the handwriting input, and the operability for the user is improved. (3) Since the size of the frame can be adjusted according to the user's preference, handwriting can be input as if writing on paper. (4) Even if you move the pen down to the wrong position,
You can upload and easily rewrite.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of the present invention.

FIG. 2 is a block diagram showing an embodiment of a handwriting character recognition input device of the present invention.

FIG. 3 is an explanatory diagram showing an example of vertical and horizontal sizes of an input frame stored in a frame size table.

FIG. 4 is an explanatory diagram showing a display example of a setting screen for setting the size of an input frame.

5 is a schematic flowchart showing an operation procedure for setting a frame size on the setting screen of FIG.

FIG. 6 is an explanatory diagram showing an example of the configuration of a pen coordinate buffer.

FIG. 7 is an explanatory diagram showing an example of a handwritten character input screen according to the present invention.

FIG. 8 is an explanatory diagram showing a relationship between a display position of a character and a display position of an input frame.

FIG. 9 is an explanatory diagram showing upper left coordinates (D3X, D3Y), vertical size (D1) / horizontal size (D2) of the input frame.

FIG. 10 is a flowchart showing a handwriting input control process of the present invention.

FIG. 11 is a flowchart showing a handwriting input control process of the present invention subsequent to FIG. 10;

FIG. 12 is an explanatory diagram showing an example of a correction operation of a character input start position.

[Explanation of symbols]

 1 display device 2 tablet 3 pen 4 keyboard 5 RAM 5a pen coordinate buffer 5b recognition result buffer 5c document buffer 5d work buffer 6 ROM 6a frame size table 6b character recognition table 6c control program 7 CPU

Claims (4)

[Claims] 1. A pen for inputting handwritten characters and a tablet integrally formed on the screen, which displays an input frame for recognizing a plurality of characters when the pen draws handwritten characters on the tablet and an input frame. Display means for sequentially displaying handwritten characters and recognized characters input to, and coordinate detection means for detecting up / down signals of the pen and detecting handwritten characters input in the input frame as coordinate data composed of dots. A coordinate data storage means for storing the detected coordinate data, a character recognition table in which various coordinate data and recognized characters based on a predetermined format are stored in advance in correspondence with each other, and the character recognition table is used to input data. Character recognition means for converting the coordinate data into corresponding recognition characters and outputting them to the screen, and a hand with the pen and tablet. A frame control means for arranging a plurality of input frames, each of which has a size larger than that of the recognition character to be output, when the written character is input, on the screen along the same row / column as the recognition character, When the handwriting character corresponding to one input frame is converted into a recognized character by the character recognition unit, the frame control unit deletes the input frame corresponding to the recognized character and is adjacent to the already displayed input frame. An input device for recognizing handwritten characters, characterized in that input frames of the same size are sequentially added and displayed. 2. The pen control device further comprises a clocking means for receiving an up / down signal of the pen from the coordinate detecting means and clocking an up time of the pen, wherein the frame control means inputs characters by the pen in response to the up / down signal of the pen. After that, it is judged whether or not a character has been input in the next input box, and it is judged that the input of the character has finished when the timed up time of the pen has exceeded the predetermined time. The handwriting character recognition input device according to claim 1, wherein all of the characters are erased. 3. A frame size table storing the plurality of input frames in association with numbers / symbols according to size and size selection instructing means, and the frame control means is an input displayed by the size selection instructing means. 2. A function for changing the size of the frame to a plurality of types is provided.
Handwriting recognition character input device described. 4. A dot counting means for counting the number of dots of coordinate data output from the coordinate detecting means when a handwritten character is input to the input frame by the pen, and a dot counting means when the pen is moved up. It is further determined whether or not the number of dots counted by has reached a reference value, and when the number of dots has not reached the reference value, coordinate data control means for invalidating the coordinate data of the input handwritten character is further provided. The handwritten character recognition input device according to claim 1, further comprising: