JPH08185266A - Handwritten character input device - Google Patents

Abstract

PURPOSE: To provide a handwritten character input device on which desired information can speedily be inputted through handwriting operation. CONSTITUTION: This input device includes an LCD, a touch panel superposed on the LCD, a handwritten character display part which displays an indicated coordinate point at the time of handwriting input operation using a pen, a stroke generation part which generates stroke data extracted from inputted coordinate data, a memory which stores the generated stroke data, and position data and size data at the time of display on the LCD, a stroke display part 18 which displays the stroke data on the LCD, and processing parts 14-17 which edit the input data on the basis of the stroke data as editing units.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handwritten character input device for inputting handwritten characters, and more particularly to a handwritten character input device used in electronic notebooks, word processors, personal computers and the like.

[0002]

2. Description of the Related Art As a handwritten character input device capable of inputting and displaying handwritten characters, an electronic notebook (model number PA-950, manufactured by Sharp Corporation) has already been commercialized.
0, PA-9700) and word processor (model W)
D-850) and the like. These conventional handwritten character input devices include an input board realized by a tablet or the like. Characters written on the input board with a dedicated pen or the like are input to the handwritten character input device as a set of coordinate points on the input board. The handwritten character input as a set of coordinate points is stored as a bit image in the memory while maintaining the input size and shape, registered, and displayed on the display surface.

As a handwritten character input device of a system different from those described above, a device which handles handwritten characters as stroke data has recently been commercialized. In these handwritten character input devices, stroke data is extracted from input handwritten characters, and stroke data corresponding to the input characters is normalized and displayed at a constant height aligned with a cursor position (input position).

FIGS. 24A and 24B show screen displays at the time of input in such a handwritten character input device. Referring to FIG. 24A, pattern 74 is handwritten on display surface 70 using pen 72. This pattern 74
When the input is confirmed, this pattern is stored as stroke data, and is aligned with the cursor position as shown in FIG. 24 (B) and displayed as a character 76 whose size is normalized.

Another conventional technique is Japanese Patent Laid-Open No. 58-12.
Some of them are disclosed in JP-A No. 80 or JP-A No. 62-22936. In the conventional technique disclosed in Japanese Patent Laid-Open No. 58-1280, the handwriting pattern input by handwriting is displayed at the position as it is. JP 62-2293
The handwritten character input device disclosed in Japanese Unexamined Patent Publication No. 6 cuts and manages handwriting input handwriting information in a predetermined edit processing unit. Then, the editing process is performed in this editing process unit.

[0006]

In the handwritten character input device used in the electronic notebook and the like already commercialized as described above, the handwritten character is handled as a bit image. Therefore, there is a problem in that it is not possible to extract only the necessary strokes later and perform an editing operation for enlarging, reducing, erasing, or moving the strokes.

Some conventional techniques handle handwritten characters as stroke data. In this case, it is possible to edit later, but since the handwritten character is displayed at the cursor position, it is not possible to display, for example, different stroke data at the overlapping position. In addition, since handwritten characters are normalized to a certain height, this method is not suitable for inputting characters that are desired to be written large and emphasized, or figures other than characters.

In the example shown in FIG. 24, a pattern input by handwriting is stored as stroke data and processed. However, the stroke data is displayed
This is where the cursor is located. Therefore, for example, the stroke data cannot be displayed at a free position where they can be overlapped with each other. Further, since the input is cursor-based, if a part of the data being displayed is deleted, the display position of the data thereafter moves. With such a display method, a free layout cannot be obtained. Furthermore, in this conventional technique, since the size of the input stroke data is normalized and displayed, a neat display can be obtained when only writing characters.
There is a problem that it is not possible to express freely, such as drawing a diagram or enclosing characters in a circle.

In the conventional technique disclosed in Japanese Patent Laid-Open No. 58-1280, the handwritten pattern that is handwritten is only displayed as it is. Therefore, the amount of information that can be handwritten depends on the size of the screen. Also, it is difficult to fully edit what has been input once.

In the conventional technique disclosed in Japanese Patent Laid-Open No. 229365/1987, handwritten handwriting patterns are handled as stroke data of a predetermined editing unit.
Therefore, it is possible to edit the data input by handwriting later. However, it is desirable to make further use of the advantage of handling input characters as stroke data so that input can be performed at higher speed.

Therefore, an object of the present invention is to provide a handwritten character input device capable of rapidly inputting desired information by handwriting.

It is an object of the present invention to provide a handwritten character input device capable of rapidly inputting desired information by handwriting and easily creating a more expressive document by handwriting.

An object of the present invention is to provide a handwritten character input device capable of inputting desired information by handwriting at high speed without considering layout or the like.

It is an object of the present invention to provide a handwritten character input device capable of quickly inputting desired information by handwriting and easily creating a more expressive document by handwriting.

[0015]

According to another aspect of the present invention, there is provided a handwritten character input device, wherein a handwriting character input device is arranged so as to overlap display means with a display surface having a rectangular coordinate set in advance, and the rectangular coordinate is set. An input unit having a preset light-transmitting input surface, for inputting coordinate data designated by a designating unit for designating coordinate points on the input surface; Handwritten character display means for displaying coordinate points on the display surface, which coincide with a plurality of instructed coordinate points at the time of handwriting input for continuously instructing coordinate points, and input by the input means at the time of handwriting input Stroke creating means for creating stroke data composed of coordinate points extracted based on a predetermined standard from a plurality of coordinate data, and created by the stroke creating means. The input stroke data is stored on the display surface, and storage means for storing stroke data, position data for defining a position when displaying on the display means and size data for defining a size to be displayed. A stroke display means for displaying and a processing means for editing the input data using the stroke data as an editing unit are included.

The handwritten character input device according to claim 2 is
2. The device according to claim 1, wherein the stroke data displayed by the stroke display means includes a selection means for selecting arbitrary stroke data, and coordinates on the display surface designated by the designation means. It further includes moving means for updating the stored content of the storage means so as to move the stroke data selected by the selecting means to the position of the point.

The handwritten character input device according to claim 3 is
The apparatus according to claim 1, wherein the input stroke data is a movement setting means for presetting whether or not the input stroke data is to be moved to a position on the display surface that is determined by a predetermined method. And means for moving the stroke data created by the stroke creating means to a position determined by the previously designated method and displaying the stroke data when the movement is set by the movement setting means. Including.

A handwritten character input device according to a fourth aspect is the device according to the first aspect, wherein the storage means includes a mixed storage means for storing the stroke data and the bit image in a mixed manner. The stroke display means,
The mixing means includes means for mixing the stroke data and the bit image stored in the mixing storage means and displaying the mixed data on the display surface.

[0019]

According to the handwritten character input device of the first aspect, the stroke data created by the stroke creating means is stored in the storage means together with the position data and the size data. The input stroke data is displayed on the display surface by the stroke display means, and the input data can be edited including the display position and size of the stroke data as an editing unit.

According to the handwritten character input device of the second aspect, in the device of the first aspect, arbitrary stroke data can be selected by the selection means from the stroke data displayed by the stroke display means. The selected stroke data can be moved to the position of the coordinate point designated by the designating means by the moving means.

According to the handwritten character input device of the third aspect, in the device of the first aspect, whether or not the input stroke data is moved to a position determined by a predesignated method is moved. It can be set by setting means. When it is set to move, the stroke data created by the stroke creating means is automatically moved and displayed.

According to the handwritten character input device of the fourth aspect, in the device of the first aspect, the mixed storage means can store the stroke data and the bit image in a mixed manner. The stroke data and the bit image can be mixed and displayed on the display surface.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Although most of the features that characterize the present invention are implemented in software, they are closely tied to the hardware configuration of the device. Therefore, first, the hardware configuration of the embodiment of the present invention will be described.

FIG. 1 shows a system block diagram of an electronic notebook according to an embodiment of the present invention. This electronic notebook has a connector 18
And an IC card can be connected. IC card
Gate array 19 and ROM (read only memory) 20
And RAM (Random Access Memory)
y) 21 and a battery 22 for protecting the stored contents of the memory is connected to the RAM 21.

The electronic notebook body is a CPU (central processing unit)
11 is provided. Further, the electronic notebook body includes an LCD (liquid crystal display device) 2 and an LCD driver 3, which are examples of display means. Further, as an example of the input means, the touch panel 1 arranged so as to overlap the LCD 2, and the analog voltage value output from the touch panel 1 is converted into a digital value and C
And an A / D converter 10 for giving to the PU 11. The touch panel 1 is an input device that is a transparent panel that is placed on the display screen of the LCD 2, and as an example, a resistive film type analog system can be adopted. In this system, the Cartesian coordinates are set in advance corresponding to the Cartesian coordinates on the display surface. When a position on the touch panel 1 is pressed with a pen or the like, an analog voltage corresponding to the coordinates of the pressed position is displayed. Output the value. By processing this value by the CPU 11, it is possible to determine which position on the screen has been designated,
It is possible to know the trajectory of handwritten data and the touch position of buttons on the screen.

The electronic notebook body is further provided with a CPU 1
1, a gate array 4 connected to 1, a ROM 5 and a RAM
6 and a main body key 15. A control program for the electronic notebook body is written in the ROM 5 in advance. The control program includes programs for reading the coordinate input position on the screen, converting it into stroke data, enlarging / reducing display, storing data, reading data, and the like.

The ROM 6 is used for a stack area used by the CPU 11, a work area for program control, various setting value registration areas, an input data registration area, and the like.
A memory protection battery 7 is connected to the RAM 6.

A serial input / output port 13 and an optical communication interface 14 are further connected to the CPU 11 via the I / O 12. Both the serial input / output port 13 and the optical communication interface 14 are added when the electronic notebook body communicates with other electronic devices, and are not always necessary for implementing the present invention.

The electronic notebook body is further provided with an RTC 8 and a buzzer 9. Further, electric power is supplied to each part of the electronic notebook body from the drive battery 17, and the low battery detection circuit 16 is connected to the drive battery 17.

It should be noted that the connector 18 is connected to all of the above-mentioned electronic notebook main body parts that need to be connected to an IC card. The IC card connected to the electronic notebook body via the connector 18 is connected for the purpose of further expanding the function of the electronic notebook, and is not always necessary for implementing the present invention.

The outline of the operation of the electronic notebook according to this embodiment will be described below with reference to the screen display. FIG. 2 shows a display example when a character is input by handwriting on the display surface 30 using a pen 32 from a blank sheet. In this embodiment, the handwritten data is displayed at the position as it is written, regardless of where it is written on the screen. The pen 32 is separate from the display surface 30 and is not displayed on the screen. In the drawings accompanying the present specification, the pen described is not displayed on the display surface 30 unless otherwise specified.

With reference to FIG. 3A, it is assumed that the handwriting data is input on the display surface 30 and then the pen 32 is separated from the display surface 30 to stop writing for a certain period of time. A state in which the pen 32 is separated from the display surface 30 in this way is called a "pen-up state", and a state other than that is called a "pen-down state". In this case, as shown in FIG. 3B, the handwritten content is converted into stroke data and then displayed at the position as it was written. This operation is called confirmation. In the present embodiment, the confirmed stroke data is surrounded by a dotted-line rectangle 33, and it is displayed to the user that it is the current editing target.

With reference to FIG. 4A, in another setting of the present embodiment, when the pen 32 is separated from the display surface 30 and the writing is stopped for a certain period of time in the pen-up state, FIG. As shown, after the written content is converted into stroke data, it is reduced and displayed at the handwritten position on the display surface 30. In the example shown in FIG. 4, the handwritten content is the original 5
It has been reduced to a size of 0%. The size reduction rate can be freely set by the user using a predetermined setting screen as shown in FIG. 9 described later. In this case, the system may set several kinds of reduction ratios in advance and select any one of them, or the user may input any size.

FIGS. 5 to 7 are flow charts showing the control flow of the program executed by the CPU 11 at the time of handwriting input in the apparatus of this embodiment. First, referring to FIG. 5, in step 1, the display screen is initialized. The pen-up flag is initialized to 1. The pen-up flag is a flag provided in the RAM 6 shown in FIG. 1 and is for indicating whether or not the pen is in the pen-up state. The value of the pen-up flag and the state of the corresponding pen are shown in FIGS. 8A and 8B, respectively. FIG.
As shown in (A), a pen-up flag of 1 indicates a pen-up state, and a pen-up flag of 0 indicates a pen-down state.

Referring again to FIG. 5, in step 1, the timer is also cleared. This timer is used, for example, for measuring the input idle time when detecting the pen-up state.

Then, in step 2, it is judged whether or not there is a pen input. If there is a pen input, the control proceeds to step 3, and if there is no pen input, the control proceeds to step 8 in FIG.

In step 3, it is judged whether or not the input pen area is within the handwriting input range. If the input pen area is within the input range, control proceeds to step 4, and if not, control proceeds to step 6.

In step 4, the coordinates on the screen corresponding to the coordinates touched by the pen are displayed. If the previous pen-up flag is 1, only the touched coordinates are drawn, and if the pen-up flag is 0, the previous coordinates and the current coordinates are connected so that the coordinates on the display surface are connected. The coordinates are drawn.

Next, in step 5, the current touch position is stored. Substitute 0 for the pen-up flag and clear the timer. After this, the control returns to step 2.

If it is determined in step 3 that the input pen area is not within the handwriting input, 1 is assigned to the pen-up flag in step 6. Then step 7
Then, it is determined whether or not the coordinates input by the pen correspond to the positions of the buttons on the screen. The coordinates corresponding to the buttons displayed on the screen are known in advance corresponding to the display screen. If the input coordinates correspond to the position of the button on the screen, the control proceeds to the processing of each corresponding predefined button. If the input coordinates do not correspond to the position of the button on the screen, control returns to step 2.

If it is determined in step 2 that there is no pen input, control proceeds to step 8 in FIG. In step 8, it is determined whether the value of the pen-up flag is 1. If the pen-up flag is 0, control proceeds to step 9, and if it is 1, control proceeds to step 10. In step 9, 1 is assigned to the pen-up flag, and the control returns to step 2 in FIG.

On the other hand, in step 10, it is judged whether or not the input vacant time is a predetermined time or more. That is,
A determination is made as to whether or not the result of the time counting by the timer described above exceeds a predetermined time. If the time measured by the timer does not exceed the predetermined time, the control returns to step 2. Otherwise, control proceeds to step 11.

In step 11, it is determined whether or not the handwritten pattern content actually exists. If there is no handwritten pattern, control returns to step 2 in FIG.
On the other hand, if there is a handwritten pattern, control proceeds to step 12.

At step 12, the handwritten pattern is converted into stroke data. As a method of making stroke data, for example, the method described in Japanese Patent Application Laid-Open No. 5-298490 (invention title "online handwritten character recognition device") may be used.

Subsequently, at step 13, the stroke data created at step 12 is stored in the memory (for example, the RAM 6 in FIG. 1). The data format stored in the memory will be described later with reference to FIGS.

Control then continues to step 14 in FIG.
In step 14, as shown in FIG. 4, it is determined whether or not the data is set to be reduced and displayed when the input data is fixed. This setting information is also stored in the RAM 6 of FIG. 1, for example. The setting contents can be changed based on the program stored in ROM5.
It can be performed in advance using the touch panel 1 and the LCD 2. If the display of the reduced size is set, the control advances to step 15 and then to step 16. If not set, control proceeds directly to step 16.

In step 15, the stroke data stored in the memory in step 13 is reduced. Since the reduction process itself of the stroke data is known, its details will not be described here.

At step 16, the user determines whether or not the position for displaying the input data is set in advance. The setting of the display position means a setting of moving the input data to the cursor position or the like and displaying the data as shown in FIG. 24, for example. If such a setting is made, control proceeds to step 17 and then to step 18. If not set, control proceeds directly to step 18.

In step 17, the display position of the stroke data stored in the memory in step 13 is determined according to the set display position determining method. After this, the control proceeds to step 18.

In step 18, the process of displaying the stroke data on the display surface is performed. In this case, the size of the display is determined by using the reduction ratio in the stroke data stored in the memory, as shown in FIG. 21, which will be described later. Regarding the display position, similarly, both the display position data stored in the memory and the position determined by a preset method are used. Therefore, when neither the reduction of the stroke data nor the display position is set, the stroke data written by the user is displayed in the same size and the same display position.

In step 19, the contents of the handwritten pattern are cleared, the timer is also cleared, and the process is returned to step 2 of FIG.

FIG. 9 shows an example of a screen for setting the reduced size, which is referred to in steps 14 and 15 of FIG. In the example shown in FIG. 9, it is possible to specify which stroke data is selected after the handwriting input is confirmed, and which of the stroke data is reduced to 75% or 50% when displayed. If the reduction is not specified, the input data is displayed with the input size as it is.

FIG. 10 shows an example in which the user moves the display position of the stroke data by using the pen 32 after the stroke data is confirmed as shown in FIG. 3 (B). FIG.
With reference to 0 (A), the stroke data immediately after being confirmed is surrounded by a rectangle 33 and is to be edited. Stroke data can be easily moved together with the rectangle 33 by pressing the inside of the rectangle 33 with a pen and holding and moving the rectangle 33 as shown in FIG. 10B.

FIG. 11 shows an outline of the operation for enlarging / reducing the stroke data to be edited. FIG.
1 (A), in this case, the enlargement / reduction icon 34 on the display screen 30 is touched with the pen 32 to change the enlargement / reduction ratio. The enlargement / reduction rate set in this way will be described later with reference to FIG.
The setting value is changed by writing in the reduction rate field. By performing these operations, for example, FIG.
As shown in FIG. 1 (B), the stroke data can be reduced and displayed so as to be surrounded by a rectangle 35.

Since the stroke data can be enlarged / reduced and moved as described above, a document including a plurality of stroke data can be created as shown in FIG. Moreover, since the display position can be selected, different stroke data can be displayed on top of each other. That is, the stroke data can be arranged at any position, and a more expressive document can be easily created in a short time.

13 and 14 are flowcharts showing control of a program executed when moving stroke data in this embodiment. First, with reference to FIG. 13, in step 1, it is confirmed whether or not the stroke data to be edited exists at the coordinates designated by the pen. If there is no stroke data,
The control shifts to the handwriting input processing already described as the input of a new handwriting pattern. If the stroke data exists, it is recognized that the stroke data is to be moved, and the control advances to step 2.

In step 2, a process of expanding the stroke data to be moved into the bit map in the memory is performed. The bitmap expansion is performed in order to display the screen at high speed while moving the stroke data using the pen.

Subsequently, in step 3, a process of displaying the bitmap data created in step 2 at the moving coordinates designated by the pen is performed. Here, the display is performed by performing an exclusive OR (XOR) operation in bit units so as not to affect the display on the screen. By doing so, the dots are erased only in the overlapping bits of the display object previously displayed on the screen and the moving display object.

Then, in step 4, a determination is made as to whether the pen has been released from the touch panel. If the pen is released from the touch panel, control proceeds to step 6 in FIG. Otherwise, control proceeds to step 5.

In step 5, the bitmap data displayed using XOR in step 3 is displayed again using XOR to erase the bitmap data.
By doing so, dots are displayed only in the bits where the display object previously displayed on the screen and the moving display object overlap. As a result, when the user is performing the operation of moving the stroke data, the image can be moved without affecting other displayed objects on the screen. After step 5, control returns to step 3.

Referring to FIG. 14, when the pen is released from the touch panel, in step 6, a process of erasing the moved original stroke data from the screen is performed. In this embodiment, a process of erasing a display object in a rectangle surrounding the moved original stroke data is performed.

In step 7, a process of displaying the stroke data to be moved at the new coordinates specified by the user is performed. More specifically, the coordinate information in the stroke data described later is changed to the new coordinate specified by the user.

Subsequently, at step 8, attention is paid to the leading stroke data among all the data stored in the memory. Hereinafter, in steps 9, 10, and 11, the inspection described below is performed on the stroke data of interest.

In step 9, it is judged whether or not the stroke data of interest has ended. If the data has ended, the moving process ends. If the data has not ended, control proceeds to step 10.

At step 10, it is judged whether or not the stroke data of interest is the moved stroke data. If the focused stroke data is the moved stroke data, the control proceeds to step 13, otherwise the control proceeds to step 11.

In step 11, it is judged whether or not the range in which the stroke data of interest is displayed overlaps the display range of the moved stroke data before the movement. If they do not overlap, control proceeds to step 13. If so, control proceeds to step 12.

In step 12, only the portion of the stroke data that is currently being noticed, of the moved stroke data, which overlaps the display range before the movement is redrawn. By redrawing in this way, the dot data that should not be erased among the portions erased in step 6 can be correctly displayed at the original position. Further, by displaying the stroke data only for the overlapping portion, the time spent for the display can be minimized. After step 12, control proceeds to step 13.

In step 13, the stroke data next to the currently focused stroke data is selected as a new target of attention from all the data stored in the memory. After step 13, control returns to step 9.

By performing the processing of steps 8 to 13, it is determined whether or not all stroke data on the screen should be displayed on the screen again, and if necessary, redrawing is performed and a correct display screen is displayed. Can be obtained.

FIGS. 15 and 16 show display examples of this embodiment when handwritten handwritings are automatically aligned. First, referring to FIG. 15, a window 36 for handwriting is provided on display surface 30, and a pen 32 is used to input characters by handwriting into window 36.

Referring to FIG. 16, if a character is input in the window 36 for handwriting and each operation is not performed for a certain period of time, FIG.
As shown in, the input characters are automatically aligned and displayed from the upper left of the display surface 30. The size of the display in this case is as written. By thus setting the characters to be automatically arranged, the user can concentrate on writing without paying attention to the layout of the input document. Therefore, it is possible to input characters very quickly. After inputting all the necessary data, the user removes the setting for automatic alignment in this way and freely edits the document by using the functions of moving, enlarging / reducing shown in FIGS. 10 and 11. You can also do it.

FIG. 17 shows a case where the handwritings are automatically arranged in the same manner as in FIGS. 13 and 14 and the heights when displaying the handwriting data are set to be uniform (normalized). It is a display example. In the display example shown in FIG. 17, the input handwriting is normalized and displayed in a size that fits into the ruled line drawn on the display surface 30.

In this embodiment, as shown in FIG.
The bit map data 38 can be displayed on the display surface 30 at the same time as the stroke information. It is also possible to display the bitmap data 38 and the stroke information in an overlapping manner. Since detailed bitmap data that is difficult to write by handwriting can be displayed at the same time, an extremely expressive document can be easily created. How to store the stroke information and the bitmap data in the memory in this way will be described later with reference to FIGS. 21 to 23. In this embodiment, stroke data and bitmap data are managed with the same data structure. Therefore, similar to the stroke data, the bitmap data can be edited such as the display position, the enlargement / reduction ratio, and the movement.

FIG. 19 is a display example on the display surface 30 when the entire handwritten stroke data information is reduced and displayed. By displaying the entire document in a reduced size in this manner, the list of documents is improved. In the example shown in FIG. 19, only two virtual one pages including the scroll range on the screen, that is, two pages are displayed. As described above, the enlargement / reduction ratio is set for each stroke data on the screen, and they are usually different from each other. In the reduced display as shown in FIG. 19, a product obtained by multiplying such an enlargement / reduction ratio by a certain reduction ratio so that all one page of the document can be displayed on the display surface 30 is newly added. The reduction rate is As a result, the stroke data is
As shown in FIG. 9, it can be reduced and displayed.

FIG. 20 shows a display example in which a screen in which the whole is reduced and displayed is made smaller and is displayed simultaneously with other screens. Referring to FIG. 20, reduced screen 40 is displayed on display surface 30 together with other screen 42. By performing such display, it is possible to slowly input the text characters later while viewing the stroke data in which the handwriting is quickly written on the reduced screen 40. Techniques for displaying and processing at the same time as other screens are known, and those skilled in the art can easily implement the screen shown in FIG. 20 using those techniques.

FIG. 21 shows the structure of the area for storing one stroke data in the RAM 6. The stored stroke data has the data ID 5 as shown in FIG.
0, status (STATUS) 52, X coordinate 54 and Y coordinate 56 indicating the position on the screen, horizontal X size 58 and vertical Y size 60, and enlargement / reduction ratio 62,
Stroke data or bitmap data 64.

The data ID 50 is data for specifying the type of stroke data. By thus providing the data ID so that the types of data such as stroke data and bitmap images can be distinguished, a plurality of types of data can be handled on the same screen.

STATUS 52 indicates the attribute of data.
In this example, it has a role of an edit work target flag.

The X-coordinate 54 and the Y-coordinate 56 are displayed with reference to them in the case of screen scrolling or reduced display of the whole. Therefore, the X coordinate 54 and the Y coordinate 56 are not actual coordinates on the screen but logical coordinates.

The width X size 58 and the height Y size 60 are values indicating the handwritten size as they are in the case of stroke data, and the bit map data value indicates the bit map data size as it is. It is a value. Since these values do not change even when scaling is performed, the display can be returned to the original size at any time.

The enlargement / reduction ratio 62 is a size designated by the user or a size automatically designated by the device. The setting method and the usage method have been described above.

FIG. 22 shows the data structure of the stroke data when the stroke data or the bit map data 64 is stroke data. Data 64
Includes a plurality of stroke data S1, S2, ....
Each stroke data includes pen information, length information, difference X and difference Y.

The pen information is information of pen up or pen down. The length information is the length of the data that follows this. In the data structure shown in FIG. 22, it is always "2". However, in a device with a large screen, the length of this data may become long. 1 for the difference X and the difference Y
The lengths in the X and Y directions of the difference from the previous stroke position are entered. In the case of the start point, 0 is entered in both the difference X and the difference Y.

FIG. 23 shows the data structure when the data 64 is bitmap data. Referring to FIG. 23,
The bitmap data includes a region for storing compression method information when the bitmap data is compressed and stored, and a plurality of line information L1, L2 .... In the case of this embodiment, since no compression is performed, "0" is entered in the compression method field.

Each line information, for example, the line information L1 of the first line, includes horizontal data 1-1 and horizontal data 1
-2, ... Includes a plurality of horizontal data. The horizontal data 1-1 contains a pattern of 8 dots in the horizontal direction of the bitmap data of the first row. The horizontal data 1-2 contains a pattern of 8 dots following the horizontal data 1-1 of the bitmap data of the first row. In this way, all the patterns forming one line are line data L1.
Included in.

Like the line data L1, the line data L2 stores all the pattern information of the second line.

Although the present invention has been described in detail based on the above-mentioned embodiments, the present invention is not limited to the above-mentioned embodiments. The device within the scope defined by the matters described in the claims is included in the technical scope of the present application.

[0088]

As described above, according to the first aspect of the invention, the input data can be edited with the stroke data as an editing unit. The stroke data is an edit unit and can be displayed as it is in the size handwritten at the handwritten position. The user can perform handwriting input using a free layout and a free order. As a result, the user can quickly input desired information by handwriting without being disturbed by the input work.

According to the invention of claim 2, claim 1
In addition to the effect of the invention described in (1), any stroke data can be selected and selected at any position. The input strokes can be displayed, for example, in an overlapping manner, and a more expressive document can be easily created by handwriting.

According to the invention of claim 3, claim 1
In addition to the effect of the invention described in (1), the input stroke data is automatically moved and displayed at a position determined by a predesignated method. The input handwritten data can be automatically arranged and displayed, and it is not necessary to perform handwriting input while considering the layout. As a result, the user can concentrate on input and can perform handwriting input at higher speed.

According to the invention of claim 4, claim 1
In addition to the effect of the invention described in (1), stroke data and bit images can be mixed and displayed. It is possible to create a more expressive document as compared with the case where only stroke data can be displayed.

[Brief description of drawings]

FIG. 1 is a block diagram of an electronic notebook according to an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a display example during handwriting input from a blank screen.

[Fig. 3] After the written contents are converted into stroke data,
It is a figure which shows typically the display example currently displayed at the position as it was written.

FIG. 4 is a diagram schematically showing a display example in which written contents are reduced and displayed in their original positions.

FIG. 5 is a flowchart showing a leading portion of an operation when inputting by handwriting.

FIG. 6 is a flowchart showing a central part of an operation when inputting by handwriting.

FIG. 7 is a flowchart showing the final part of the operation when inputting by handwriting.

FIG. 8 is a schematic diagram for explaining a pen-up flag.

FIG. 9 is a diagram schematically showing a display example of a reduction rate setting screen.

FIG. 10 is a diagram schematically showing movement of a display position of stroke data.

FIG. 11 is a schematic diagram showing an example of a screen for enlarging / reducing stroke data to be edited.

FIG. 12 is a diagram schematically showing a screen example of a document having a higher expressiveness created by a user by editing a plurality of stroke data.

FIG. 13 is a flowchart of the first half of the movement operation.

FIG. 14 is a flowchart of the latter half of the movement operation.

FIG. 15 is a diagram schematically showing a display example of handwriting on a blank screen in a setting for automatically arranging handwritings.

FIG. 16 is a schematic diagram showing an example of a screen in which characters are being input one after another with a setting for automatically arranging handwritten handwriting.

FIG. 17: Settings for automatically aligning the height of handwriting
It is a schematic diagram which shows the example of a screen in the state which is inputting the character one after another.

FIG. 18 is a schematic diagram showing a screen example in which stroke data and bitmap data are mixedly displayed.

FIG. 19 is a diagram schematically showing a screen example in which handwritten stroke data information is reduced and displayed as a whole.

FIG. 20 is a diagram schematically showing an example in which a stroke data display screen is displayed small and is displayed simultaneously with other screens.

FIG. 21 is a diagram schematically showing an example of the data structure of the present invention.

FIG. 22 is a diagram schematically showing an example of a data structure of stroke data.

FIG. 23 is a diagram schematically showing an example of a data structure of bitmap data.

FIG. 24 is a diagram showing a display example of handwriting input in the conventional technique.

[Explanation of symbols]

 1 Touch Panel 2 LCD 5 ROM 6 RAM 11 CPU 30 Display Surface 32 Pen

Claims (4)

[Claims] 1. The input device comprises a display means having a display surface with preset rectangular coordinates, and a translucent input surface arranged so as to overlap the display surface and having preset rectangular coordinates. Input means for inputting the coordinate data designated by the designating means for designating the coordinate points on the surface, and a plurality of designated data at the time of handwriting input for successively designating the coordinate points on the input surface by the designating means. Handwritten character display means for displaying coordinate points on the display surface, which coincide with individual coordinate points, and a plurality of coordinate data inputted by the input means at the time of handwriting input, based on predetermined criteria Stroke creating means for creating stroke data composed of the coordinate points, stroke data created by the stroke creating means, and the stroke data displayed on the display means. Storage means for storing position data defining the position and size data defining the size to be displayed, stroke display means for displaying the input stroke data on the display surface, and the stroke data A handwritten character input device including a processing unit for editing input data as an editing unit. 2. The selection means for selecting arbitrary stroke data among the stroke data displayed by the stroke display means, and the position of the coordinate point designated by the designating means on the display surface, The handwritten character input device according to claim 1, further comprising a moving unit for updating the storage content of the storage unit so as to move the stroke data selected by the selecting unit. 3. The input stroke data is moved by the movement setting means for presetting whether or not to move to a position on the display surface, which is determined by a predetermined method. And a means for moving and displaying the stroke data created by the stroke creating means to a position determined by the predesignated method when the setting is made. Handwritten character input device described. 4. The storage means includes a mixed storage means for storing the stroke data and the bit image in a mixed manner, and the stroke display means stores the stroke data and the bit image stored in the mixed storage means. The handwritten character input device according to claim 1, further comprising means for displaying a mixed display on the display surface.