JPH1091346A - Handwriting input device and medium storing handwriting input device control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To input information in a size of character easy to write and also to show a large quantity of information on a display screen by showing image data of inputted handwritten character data and the image data of the reduced handwritten character data in parallel to each other on the display screen. SOLUTION: An input part 1 includes an input area where the handwritten data are inputted by means of a pen and a command area where an editing command is inputted for the handwritten character data on a tablet. A data conversion part 8 converts the locus of the handwritten data into the image data. A data memory part 6 includes the areas where the image data and the format data on the character font are stored. A character reduction part 7 reduces the image data of the handwritten character data to the image data of the character size width included in the format data based on an editing command. A display part 2 shows the image data of the handwritten character data and the image data of the reduced handwritten character data in parallel to each other in a designated area of a display screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a handwriting input device and a medium storing a handwriting input device control program.
For details, it is applied to personal computers, word processors, portable electronic memos, etc., which have an input panel on the display screen.It displays and stores pattern information such as handwritten characters and graphics entered on the surface of the input panel. And a medium storing a handwriting input device control program.

[0002]

2. Description of the Related Art In the same way as writing a character or a figure with a pencil on paper, the handwriting is displayed by a dot matrix type liquid crystal display device by writing on an input panel surface with an electronic pen. There is known an electronic memo that can store the stored contents in a memory as it is, read out the stored contents at any time, redisplay the contents, or print the contents with a dot printer (see Japanese Patent Application Laid-Open No. 59-24387).

FIG. 13 is an explanatory diagram showing an example of a handwritten character input by a conventional electronic memo. For example, "2/15
(Wed) 9:00 We will have a group meeting. 』
The locus of writing the memo on the input panel is read as it is and displayed on the dot matrix type display screen. Here, the size of the stroke written on the input panel and the size of the stroke of the display output correspond to 1: 1. When entering characters on a display screen of such an electronic memo at a normal speed, the user should make sure that the characters are not too crowded and difficult to write.
Lines have been changed appropriately. For example, "group meeting" is entered in two lines.

[0004]

However, the conventional electronic memo input panel is a simple input means capable of inputting the display screen as a single electronic memo sheet. Because the feeling of writing is different from writing with paper and pencil, it is difficult to input very small characters and figures, so it was necessary to write a little larger in practice. Therefore, the input handwritten characters are displayed much larger than the standard character size, and there is a problem that the amount of information displayed on one display screen cannot be increased.

The present invention has been made in view of the above circumstances. For example, when inputting with a pen on a transparent tablet formed on a display screen, a relatively large handwritten character can be input in an input area. Provided is a handwriting input device capable of displaying input image data in a designated area of a display screen as image data reduced to a character height (character width) of format data which is not difficult to read when displaying a handwritten character as a memo. Is what you do.

[0006]

SUMMARY OF THE INVENTION The present invention comprises a transparent tablet integrally formed on a display screen, and an input area for inputting handwritten character data by a pen operation and a command area for inputting a command for editing handwritten character data. An input unit provided on the tablet, a data conversion unit for converting a locus of handwritten character data input in the input area into image data, an area for storing at least image data and an area for storing character font format data A data memory unit provided with a character reduction unit that reduces the image data of the input handwritten character data to image data of a character size width included in the format data in accordance with the edit command; The image of the handwritten character data displayed and reduced on the display screen immediately below the input area A handwriting input device comprising a display unit for displaying arranged in specified areas of the display screen Jideta.

In the present invention, the input unit is composed of a pen (pointing device) and a transparent electromagnetic induction type or capacitance type tablet integrally formed on a display screen. )
It detects whether the pen is up (withdrawn), detects the coordinates of the trajectory of the pen, and sends it to the CPU of the microcomputer that controls the entire apparatus. The data conversion unit, the data memory unit, and the character reduction unit also include a microcomputer including a CPU, a RAM, and an I / O port. In particular, the data memory unit includes a ROM and a RAM.
The ROM stores a program in which the CPU functions as a data conversion unit, a data memory unit, and a character reduction unit. The display unit is LCD (liquid crystal display), CRT
It consists of a display device consisting of a display.

According to the present invention, when a pen is input to the transparent tablet formed on the display screen, a slightly larger handwritten character can be input in the input area, and the input handwritten character is displayed as a memo. In this case, the memo can be created with a handwriting input device having a small display area because image data reduced to the character height (character width) of the format data which is difficult to read can be arranged and displayed in a designated area of the display screen. In this case, it is possible to input a handwritten character having a size that is easy to write without worrying about the size of the display character, and the amount of information displayed on the display screen increases. In addition, since the character height of the input handwritten characters is displayed at a fixed level, a memo that is easy to read later can be created.

A timer unit is provided which monitors the elapsed time after pen-up in conjunction with the pen of the input unit and generates a predetermined edit command when the elapsed time exceeds a set time. The handwritten character data is reduced to image data of a character size width included in the format data according to a predetermined editing command from the timer unit, and the display unit erases the image data of the handwritten character data displayed in the input area. Preferably, the image data of the reduced handwritten character data is arranged and displayed in a designated area of the display screen.

The timer section is constituted by a CPU or a counter of the microcomputer, counts the elapsed time of the pen-up signal from the input section, and generates an edit command of [Adopt] or [Execute] when the set time is exceeded. I do. According to the above configuration, just by moving the pen away from the input area of the tablet for a set time, handwritten characters input to the input area are sequentially and automatically displayed one after another in the specified area of the display screen. It becomes even easier.

When the character string of the handwritten character data input to the input area exceeds a set range, the data conversion unit takes in the character string of the handwritten character data input to the input area and sequentially converts the data into image data. However, it is preferable to provide a configuration further having a function of sending the character to the character reduction unit. According to the above configuration, if the character string of the handwritten character data exceeds the set range when the character string is input to the input area of the tablet, the character string is sequentially converted to image data, further reduced by the character reduction unit, and automatically placed in the designated area of the display screen. Are displayed one after another, so that the memo creation input can be further facilitated.

The data memory section includes an area for temporarily storing image data of handwritten character data input to the input area, an area for updating and storing the image data reduced by the character reduction section, Is preferably further provided with an area for storing as a file. According to the above configuration, the data memory section only needs to expand the memory area for storing the conventional image data so that the application of the present invention functions, so that the development cost of the system can be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the drawings. Note that the present invention is not limited by this. In addition, the handwriting input device of the present invention is most effectively used for an electronic notebook having a relatively small display area or an information processing device of a portable information terminal.

FIG. 1 is a block diagram showing a schematic configuration of a handwriting input device according to the present invention. In FIG. 1, an input unit 1 includes a pen (pointing device) and a transparent tablet (input panel) integrally formed on a display screen, and allows a user to input handwritten characters on the tablet. Move the cursor or enter an editing command. Reference numeral 2 denotes a display unit, which is composed of an LCD (Liquid Crystal Display) and immediately displays the trajectory (stroke) of handwritten character data input by the user on the input panel, or displays reduced handwritten character data (dot image data). ) Is displayed in the designated area (display area) of the display screen.

Reference numeral 3 denotes a timer unit, which generates an editing command according to the elapsed time of the pen-up state when the user performs a pen-down operation or a pen-up operation on the display screen (tablet). For example, if the setting time after pen-up is set to 0.5 seconds, if the pen-up state continues for 0.5 seconds, it is determined that the user has temporarily stopped inputting handwritten characters, and [Adopt] A command is automatically generated to erase and initialize the trajectory of the user handwritten character data displayed in the input area of the display screen.

Reference numeral 4 denotes a control unit, which is mainly constituted by a CPU of a microcomputer, controls each unit of the handwriting input device and performs data processing. Reference numeral 5 denotes a program memory unit, which stores a program of the handwriting input device of the present invention, and transfers program data corresponding to a function according to a command from the control unit 4. A data memory unit 6 stores image data of handwritten character data input by the user, image data of reduced handwritten character data, user data, system format data, variable information, and the like.

Reference numeral 7 denotes a character reduction unit which calculates a character height from the coordinate values of the input handwritten character data and a reduction ratio based on the character height of the input handwritten character data and the character height included in the format data. And a function of reducing handwritten character data at the calculated reduction ratio. Reference numeral 8 denotes a data conversion unit that converts input handwritten sentence data into stroke information for recognition processing, a function that converts handwritten character data into image data, and a format data that can be subjected to data processing for each purpose. And the like.

Reference numeral 9 denotes a recognition unit, which includes a recognition dictionary and analyzes the stroke information converted by the data conversion unit 8 and converts the stroke information into a character font included in the format data. In the present embodiment, image data of handwritten characters input slightly larger in the input area of the tablet is reduced to the character height (character width) of the format data as a memo and arranged in the designated area of the display screen. Although displayed, depending on the input to the edit command, it can be displayed after being converted into the character font included in the format data. Reference numeral 10 denotes a printing unit, which includes a thermal printer, a laser printer, or the like, and converts handwritten character data stored in the data memory unit 6 into a print format and prints it. Reference numeral 11 denotes a communication unit which is constituted by a modem or the like, converts handwritten character data stored in the data memory unit 6 into a communication format, and transmits it to another communication device.

In the present invention, the timer unit 3, the control unit 4, the program memory unit 5, the data memory unit 6, the character reduction unit 7, the data conversion unit 8, and the recognition unit 9 are a CPU, an R
The microcomputer is composed of a microcomputer including an OM, a RAM, and an I / O port.
The recognition dictionary of the recognition unit 9 is configured by a ROM, and the data memory unit 6 includes a ROM that stores fixed data such as a predetermined character font and a RAM that stores an image data and the like, a work area, a file area, and the like. Be composed.

Further, in the present invention, there is provided an external storage medium reading device for reading a control program from a medium storing a program for controlling a handwriting input device by a computer, a memory card composed of an EEPROM, a hard disk, a floppy disk, a CDROM, or the like. Further, a configuration can be provided.

This control program is read into the program memory unit, and causes the computer to convert the trajectory of the handwritten character data input into the input area of the transparent tablet integrally formed on the display screen with the pen into image data. Image data is stored in the data memory area and character font format data is stored in another area, and the image data of the input handwritten character data is converted into image data of the character size width included in the format data according to the edit command. The image data of the input handwritten character data is displayed on the display screen immediately below the input area of the tablet, and the reduced image data of the handwritten character data is arranged and displayed in the designated area of the display screen. .

FIG. 2 is an explanatory diagram showing each functional area and the positional relationship on the display screen in this embodiment. A transparent input panel is integrally formed on the front screen shown in FIG. In the display screen, [Clear], [Line feed],
In the command area where you can specify each of the [Adopt] and [Save] commands, the middle area is where the user enters handwritten character data and the input handwritten character data (bit image data) is displayed. The area includes a display area for reducing the input handwritten character data to a character height (line spacing) within a range that does not make it difficult to read and displaying the input handwritten character data at a specified position when the [Adopt] command is specified. It corresponds to the XY coordinates of the quadrant.

Note that the dotted line in the input area is an auxiliary line provided to reduce the oblique input of a handwritten character string and facilitate writing, and is not input as data. Further, in this embodiment, the regions of the display screen correspond to the XY coordinates of the first quadrant, but are not particularly limited in actual use. Also, the layout is exemplified by horizontally written characters, but is not particularly limited in actual use.

FIG. 3 is an explanatory diagram showing the coordinate relationship between the handwritten character data input to the input area of the display screen and the handwritten character data reduced and displayed in the display area in this embodiment. As shown in FIG. 3 (a), for example, when a character string “Ai” is input in the input area, the character reduction unit 7 treats this character string as one block, and
The maximum value and the minimum value of the coordinates are obtained, and a certain character height is read from the memory to obtain the reduction ratio.

In the case of this embodiment, the maximum value (Xmax, Y
max) and the minimum values (Xmin, Ymin) are (15
0,80), (30,40), and the height of this character string block is 80-40 = 40. For example, if the standard character height Hs of the apparatus is 12, the reduction rate is 12/4.
When 0 = 0.3, the image is reduced in a similar manner. FIG. 3 (b)
For example, if the command of [Adopt] is specified, the character string "Ai" is reduced at a reduction ratio of 0.3 and displayed at the specified position in the display area.

FIG. 4 is an explanatory diagram showing the data structure of handwritten character data. As shown in FIG. 4A, the data conversion unit 8 performs, for example, a point coordinate (input point) in the input area so that the handwritten character data (character string) detected from the input area of the display screen can be data-processed for each purpose. Following block 1 indicating stroke information), block 2 indicating the maximum / minimum value of the character string width, a code indicating [line feed] in the command area, a code indicating [save], and automatic timeout to indicate automatic import of character data It is converted into one format data including a block, a block indicating a display position (cursor position) of a display area, and a block N indicating a character interval of a character string to be reduced and displayed.

FIG. 4B shows that the data conversion unit 8 converts character string blocks 1 to N shown in FIG. 4A into one-format data into bit image data as display data of an input area and a display area. Things. Since the bit image data is processed by image development that is easy to handle in the display unit 2 and the data memory unit 6, each dot of the bit image data has a data configuration in which 0/1 is replaced by a binary number. Here, EOD indicates the end of data.

FIG. 5 is an explanatory diagram showing a display screen when a [Clear] command in the command area in this embodiment is designated. For example, when the character string “Gumi” is input in the input area and the “Clear” command in the command area is specified (FIG. 5A), the character string “Gumi” is canceled and the input is performed. Area is initialized (FIG. 5).
(B)).

FIG. 6 is an explanatory diagram showing a display screen when the [line feed] command in the command area in this embodiment is designated. For example, when a character string "meeting" is input in the input area and a [line feed] command in the command area is specified (FIG. 6A), the input area is initialized and the character string "meeting" is input. Is reduced and displayed at the designated position in the display area, indicating that the cursor position is line feed (FIG. 6).
(B)).

FIG. 7 is an explanatory diagram showing a display screen when the [Adopt] command in the command area in this embodiment is designated. For example, when a character string “group” is input in the input area and the “Adopt” command in the command area is specified (FIG. 7A), the input area is initialized and the character string “group” is input. Is reduced and displayed at the designated position in the display area (FIG. 7B).

FIG. 8 is an explanatory diagram showing a display screen when the "save" command in the command area in this embodiment is designated. For example, when the character string "I do" is entered in the input area and the [Save] command in the command area is specified (Fig. 8 (a)), the input area is initialized and "I do.""Is reduced and displayed at the designated position in the display area, and the destination file [sticky note]
FIG. 8B shows that a window for designating [handwritten memo] is displayed in the display area (FIG. 8B). Therefore, the RAM of the data memory unit 6 is provided with file areas such as [sticky note] and [handwritten note].

FIG. 9 is an explanatory diagram showing an example of a handwritten memo input by the handwriting input device of the present invention. For example, "2 /
15:00 (Wed) 9:00 Group meeting will be held. Is input into the input area while dividing the handwritten memo into appropriate character strings, and a memo is created by designating the commands shown in FIGS. Then, it is shown that the "group meeting" which is two lines in the conventional handwritten memo shown in FIG. 13 is now contained in one line. Further, according to the present invention, the handwritten memos are arranged one by one at the same character height to make it easy to read. Further, the character spacing is appropriately adjusted.

FIGS. 10 and 11 are flowcharts showing the operation procedure of the main routine in the handwriting input device of the present invention. [Main Routine] Step S10: Delete the Houser handwritten character data stored in the work area (temporary storage area) of the data memory unit 6, initialize the input area and display area of the display screen, and set the line feed flag and the save flag. Turn off (reset), and initialize the timer unit 3 and the cursor position.

The line feed flag is turned on (set) when a line feed in the command area is designated, and indicates whether a line feed code is added after the handwritten character is reduced. The save flag is turned on (set) when the save of the command area on the display screen is designated, and indicates whether to save after the handwritten character reduction processing.

Step S20: It is checked whether [Clear] in the command area of the display screen is pointed. Y
If es, the process proceeds to step S21, and if No, the process proceeds to step S30. Step S21: The user handwritten character data stored in the data memory unit 6 is deleted. Step S22: Delete the locus of the user handwritten character data displayed in the input area of the display screen (see FIG. 6). Step S23: Initialize the timer section 3 and execute Step S
Return to 20, and wait for points.

Step S30: It is checked whether the user has pointed to [line feed] in the command area of the display screen. Ye
If s, proceed to step S31; if No, step S40
Proceed to. Step S31: Turn on the line feed flag and step S15
Go to 0. Step S40: It is checked whether or not [Adopt] in the command area of the display screen is pointed. If yes, the process proceeds to step S150, and if no, the process proceeds to step S50.

Step S50: It is checked whether or not [Save] in the command area of the display screen is pointed. Ye
If s, the process proceeds to step S51, and if No, the process proceeds to step S60. Step S51: Turn on the save flag. Step S1
Go to 50. Step S60: Check whether the display area of the display screen is pointed. If Yes, go to step S61, N
If o, the process proceeds to step S70. Step S61: Move to the position where the cursor position in the display area of the display screen is pointed, and proceed to step S150.

Step S70: It is checked whether the pen is pointed (down) in the input area of the display screen (see FIG. 3). If Yes, the process proceeds to step S90. If No, the process proceeds to step S80. Step S80: It is checked whether a predetermined time has elapsed since the pen was released from the input area of the display screen. For example, if a setting value equivalent to 0.5 seconds is given to the timer unit as an initial value, it is checked whether 0.5 seconds have elapsed. If Yes, the process proceeds to step S150. If No, the process proceeds to step S20.

Step S90: It is checked whether or not there is user handwritten character data in the data memory section 6.
If yes, go to step S100; if no, go to step S2
Proceed to 3. This is to avoid discarding useless character string groups when there is no input in the input area of the display screen. Step S100: The user handwritten character data is read from the data memory unit 6, and the maximum value and the minimum value of the X coordinate and the Y coordinate are obtained. For example, taking FIG. 3 as an example,
The three characters “Aoi” are input, and the maximum value of X coordinate Xmax = 150, the maximum value of Y coordinate Ymax = 80, X
Minimum coordinate value Xmin = 30, minimum Y coordinate value Ymin = 4
It becomes 0. Proceed to step S110.

Step S110: The X coordinate maximum value Xmax detected at step S100 and the pointed X coordinate X
Calculate the difference from p. Then, it is checked whether the difference is equal to or larger than a predetermined value, that is, whether the difference is larger or smaller than the size Xs corresponding to one character. If it is larger than Xs, go to step S120.
If smaller, the process proceeds to step S23. Here, as shown in FIG. 3, the pointed X coordinate Xp = 35, Xs = 60
Then, since 150-35> Xs (60), the process proceeds to step S120. Since the value of Xs is affected by the width of the input area (particularly the vertical width in horizontal writing), it cannot be unconditionally defined, but an appropriate value that can be used is set. If this value is too small, one character may be decomposed depending on the writing order when writing a larger character.

Step S120: The user handwritten character data in the data memory section 6 is reduced to reduced handwritten character data. This reduction processing will be described in detail in steps S210 to S240. Step S130: Check whether the save flag is ON. If Yes, the process proceeds to step S131, and if No, the process proceeds to step S140. Step S131: When the save flag is ON, the data conversion unit 8 converts the reduced handwritten character data stored in the data memory unit 6 into bit image data so that it can be stored in a [handwritten memo] or a [sticky memo] file. I do.
Then, after the data conversion, the data memory unit 6 additionally stores the bit image data in the file of [handwritten memo] or [sticky memo], and ends the main routine.

Step S140: Check whether the line feed flag is ON. If Yes, the process proceeds to step S141, and if No, the process proceeds to step S21. Step S141: A line feed code is added to the reduced handwritten character data in the data memory unit 6 (see FIG. 4A), and the process proceeds to step S142. Step S142: Turn off the line feed flag, and
Proceed to 21. Step S150: It is checked whether or not there is user handwritten character data in the data memory unit 6 at this time.
If Yes, the process proceeds to step S120, and if No, the process proceeds to step S21.

According to the above configuration, (1) when creating a memo with a handwriting input device having a small display area, it is possible to input with a handwritten character having a size that is easy to write without worrying about the size of the display character. And the amount of information displayed on the display screen increases. (2) Just by moving the pen away from the input area of the tablet for a set time, handwritten characters input in the input area are automatically displayed one after another in the specified area on the display screen, making it easier to create and input memos. Become. (3) If the character string of the handwritten character data exceeds the set range when input into the input area of the tablet, it is sequentially converted into image data, further reduced by the character reduction unit, and automatically successively into the designated area of the display screen. Since it is displayed, the memo creation input can be further facilitated.

FIG. 12 is a flowchart showing the operation procedure of the handwritten character reduction processing subroutine in the handwritten input device of the present invention. [Handwritten character reduction processing subroutine] Step S210: The same processing as step S100 is performed. Branching from step S70 to step S100
If the process has already been performed, this process is not necessary, and the process proceeds to step S220. Step S220: Find the height Yh of the character string block,
Proceed to step S230. Referring to FIG. 3 as an example, Ym
ax = 80, Ymin = 40, and Yh = Ymax−
From the expression of Ymin, the height Yh of the character string block is 40.

Step S230: The reduction ratio R of the character string block is obtained, and the process proceeds to step 240. In FIG. 3, when the standard character height Ys = 12 of the apparatus main body is set, the reduction ratio R of the character string block is calculated from the equation of R = Ys / Yh to 0.
It becomes 3. Step S240: Based on the reduction ratio R of the character string block obtained in step 230, the relative coordinates of each of the user handwritten character data stored in the data memory unit 6 are reduced using the coordinates (Xmin, Ymin) as the origin. .
The handwritten character reduction processing subroutine ends, and step S
Return to 130.

[0046]

According to the present invention, it is possible to input a slightly larger handwritten character in the input area when performing pen input on the transparent tablet formed on the display screen, and the input handwritten character can be used as a memo. When displayed, image data reduced to the character height (character width) of the format data that is difficult to read can be arranged and displayed in the designated area of the display screen. At the time of creation, it is possible to input with handwritten characters of a size that is easy to write without worrying about the size of the display characters, and the amount of information displayed on the display screen increases. In addition, since the character height of the input handwritten characters is displayed at a fixed level, a memo that is easy to read later can be created.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a handwriting input device of the present invention.

FIG. 2 is an explanatory diagram showing each functional area and a positional relationship on a display screen in the embodiment.

FIG. 3 is an explanatory diagram showing a coordinate relationship between handwritten character data input to an input area of a display screen and handwritten character data reduced and displayed in the display area in the embodiment.

FIG. 4 is an explanatory diagram illustrating a data configuration of handwritten character data in the present embodiment.

FIG. 5 is an explanatory diagram showing a display screen when a “clear” command in a command area is designated in the embodiment.

FIG. 6 is an explanatory diagram showing a display screen when a [line feed] command in a command area is designated in the embodiment.

FIG. 7 is an explanatory diagram illustrating a display screen when an “employed” command in a command area is designated in the embodiment.

FIG. 8 is an explanatory diagram showing a display screen when a [Save] command in a command area is designated in the embodiment.

FIG. 9 is an explanatory diagram showing an example of a handwritten memo input by the handwriting input device of the present invention.

FIG. 10 is a flowchart showing an operation procedure of a main routine in the handwriting input device of the present invention.

FIG. 11 is a flowchart showing an operation procedure of a main routine in the handwriting input device of the present invention, following FIG. 10;

FIG. 12 is a flowchart showing an operation procedure of a handwritten character reduction processing subroutine in the handwritten input device of the present invention.

FIG. 13 is an explanatory diagram showing an example of a handwritten memo input by a conventional electronic memo.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Input part 2 Display part 3 Timer part 4 Control part 5 Program memory part 6 Data memory part 7 Character reduction part 8 Data conversion part 9 Recognition part 10 Printing part 11 Communication part

Claims (5)

[Claims] 1. A tablet having a transparent tablet integrally formed on a display screen, wherein an input area for inputting handwritten character data by a pen operation and a command area for inputting an editing command of handwritten character data are provided on the tablet. An input unit, a data conversion unit that converts a locus of handwritten character data input in the input area into image data, and a data memory unit provided with at least an area for storing image data and an area for storing format data of a character font. A character reduction unit configured to reduce image data of input handwritten character data to image data of a character size width included in format data according to an edit command, and a display screen immediately below the input area for input image data of handwritten character data Image data of handwritten character data reduced and displayed on the designated area of the display screen A handwriting input device comprising a display unit arranged and displayed on the display. 2. The apparatus according to claim 1, further comprising: a timer unit that monitors an elapsed time after pen-up in cooperation with a pen of the input unit and generates a predetermined edit command when the elapsed time is equal to or longer than a set time. The input handwritten character data is reduced to image data of a character size width included in the format data according to a predetermined editing command from the timer unit, and the display unit displays the image data of the handwritten character data displayed in the input area. 2. The handwriting input device according to claim 1, wherein image data of the handwritten character data reduced and erased are arranged and displayed in a designated area of a display screen. 3. The data conversion unit according to claim 1, wherein when the character string of the handwritten character data input to the input area exceeds a set range, the data conversion unit captures the character string of the handwritten character data input to the input area and converts the character string into image data. 2. The handwriting input device according to claim 1, further comprising a function of sequentially converting the characters and sending them to the character reduction unit. 4. An area for temporarily storing image data of handwritten character data input to the input area, and an area for updating and storing the image data reduced by the character reduction section. 2. The handwriting input device according to claim 1, further comprising an area for storing the memo as a file. 5. A medium storing a program for controlling a handwriting input device by a computer, wherein the control program is input to a computer in an input area of a transparent tablet integrally formed on a display screen by a pen. The trajectory of the handwritten character data is converted into image data, at least the image data is stored in an area of the data memory section, and the format data of the character font is stored in another area, and the image data of the input handwritten character data is stored. In accordance with the edit command, the image data of the character size width included in the format data is reduced, the image data of the input handwritten character data is displayed on the display screen immediately below the input area of the tablet, and the reduced image data of the handwritten character data is displayed. It is specially arranged and displayed in the specified area of the display screen. A medium in which a control program for controlling a handwriting input device to be used is stored.