JP2010134897A - Drawing device, drawing method, program and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform drawing support enabling a user to write easily and to continue writing easily without performing operation other than writing operation. <P>SOLUTION: When an input is performed onto a drawing input screen 3 by an input device 4, drawing information is displayed on the screen, and a coordinate of the drawing information is converted into a two-dimensional coordinate on a virtual drawing space and stored. When a writing exists in a domain in some range from a boundary line on the drawing input screen, a drawing processing device 1 calculates a scroll direction by drawing information in a past fixed period, obtains drawing information in a cutout domain of the drawing information from the virtual drawing space, from the stored drawing information corresponding to the direction, converts it into a coordinate to be displayed on the drawing input screen, and redraws the result on the drawing input screen. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to, for example, a drawing apparatus, a drawing method, a program, and a recording medium having a support function for writing out one's thoughts and ideas that a user is thinking.

  Conventionally, there are whiteboards and paper as conventional devices for writing out one's thoughts and ideas during thinking. However, with these conventional tools, the writing space is reduced by writing, so if the space is filled up to some extent, the writing action stops and it may be difficult to continue writing.

  In addition, because there is only one place to write physically, it is not possible to write at the same place or a nearby lifting place at the same time in a place where multiple people use it. There is a problem that it is difficult to write out the thoughts that are being considered easily, and to write down all the members participating in the discussion.

  On the other hand, there is a shared whiteboard system as disclosed in Patent Document 1, for example, as a method for solving the problem of the fact that there is only one place to write physically and writing by all the participants participating in the discussion.

JP 2007-66315 A

However, the above-described conventional drawing system has a problem that if the writing is continued, the screen becomes full and the space for writing can be lost sometime. In addition, there is a problem that the writing part reaches the boundary of the screen edge and cannot be written any further.
In order to solve this problem, it is possible to use a digital tool and obtain a new writing space such as opening a new page. In this case, the user (user) needs to perform an operation other than writing. For this reason, the act of continuing to write may stop, or it may not be possible to continue writing in association with the previous writing. If the writing space is virtually an infinite page, the more space you write, the harder it will be to list what you have written in the past.

In addition, mouse and pen tablet, which are hand-drawn drawing means, are difficult to write in detail, so it is difficult to write without writing finely, or if you can not write finely, you will write large and space will be filled up quickly There's a problem.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a drawing apparatus, a drawing method, a program, and a recording medium capable of performing drawing support that is easy to write and easy to write without performing operations other than the writing operation by the user. It is in.

  In order to achieve the above object, a drawing apparatus according to the present invention includes an input unit that receives an input operation of drawing information, and drawing information that stores the input drawing information together with information of a drawing target area on the drawing screen of the drawing information. Storage means, display means having a drawing screen for drawing the inputted drawing information and drawing information stored in the drawing information storage means, drawing information inputted by the input means, and storage in the drawing information storage means Display control means for displaying the drawn drawing information on the drawing screen based on the drawing target area information of the drawing information on the drawing screen, and depending on the contents of the drawing information inputted by the input means A calculation means for calculating a parameter of an automatic scroll function of the drawing information displayed on the screen; and a drawing stored in the drawing information storage means. By changing the drawing target area of the information on the drawing screen according to the parameter calculated by the calculating means, and redrawing the drawing information on the drawing screen according to the changed drawing target area, And a drawing information scrolling means for scrolling the drawing information.

  The drawing apparatus having the above configuration further includes an all drawing information display unit having an all drawing information display screen for displaying all the inputted drawing information and all the drawing information stored in the drawing information storage unit. The drawing screen included in the display means is a screen obtained by enlarging a part of the entire drawing information display screen.

  The drawing apparatus according to the present invention also includes an input unit that receives an input operation, and drawing information that stores drawing information together with information on a drawing target area on a drawing screen of the drawing information when the drawing information is input by the input unit. Storage means; display means for drawing drawing information input by the input means and drawing information stored in the drawing information storage means; all input drawing information and drawing information storage means; All drawing information display means having an all drawing information display screen for displaying all the drawing information stored in the screen, and depending on the content of the input operation by the input means, the input operation is the drawing information for the drawing screen. An input identifying means for identifying and determining whether the operation is an input operation or an input operation for the entire drawing information display screen; When the input identifying unit determines that the operation is an operation for inputting drawing information on the drawing screen, the input drawing information and the drawing information stored in the drawing information storage unit are stored in the drawing information. When the input identifying means determines that the input operation is an input operation to the entire drawing information display screen based on the information of the drawing target area on the drawing screen, the entire drawing information And display control means for performing a predetermined display on the drawing screen based on the input operation content on the display screen.

  The drawing apparatus having the above configuration further includes an all drawing information display unit having an all drawing information display screen for displaying all the inputted drawing information and all the drawing information stored in the drawing information storage unit. The drawing screen included in the display unit is a screen obtained by enlarging a part of the entire drawing information display screen, and the drawing information displayed on the drawing screen included in the display unit when new drawing information is input by the input unit. If the range exceeds the predetermined range of the entire drawing information display screen of the all drawing information display means, the newly inputted drawing information and the drawing information stored in the drawing information storage means are all Calculation means for calculating a reduction ratio of the drawing information displayed on the entire drawing information display screen so as to be displayed on the entire drawing information display screen; The drawing information is characterized by comprising further a reduced display process means for reducing in accordance with the calculated magnification.

  The drawing apparatus having the above configuration further includes a transmission / reception unit that transmits / receives drawing information to / from another drawing apparatus, and the drawing information storage unit receives the drawing information received from the other drawing apparatus by the transmission / reception unit. The drawing information is stored together with information on a drawing target area on the drawing screen.

According to the present invention, it is possible to perform drawing support that is easy to write and easy to write without performing any operation other than the writing operation by the user.
Further, according to the present invention, both the drawing operation and the drawing area selection operation can be executed seamlessly. In addition, according to the present invention, it is possible to facilitate the operation of browsing the content written by another person in another place while drawing and repeating writing to a plurality of distant areas. As a result, it is possible to reduce hindering thoughts and discussions while writing in various places or browsing the written contents.

1 is a diagram illustrating a configuration example of a drawing system according to a first embodiment of the present invention. 1 is a block diagram illustrating a configuration example of a drawing processing device of a drawing system according to a first embodiment of the present invention. The figure which shows an example of the form of the automatic scroll of the drawing input screen in the drawing system in the 1st Embodiment of this invention. 6 is a flowchart illustrating an example of a processing operation performed by the drawing system according to the first embodiment of the present invention. The figure which shows the 1st example of the scroll form of the drawing information by the drawing system in the 1st Embodiment of this invention. The figure which shows the 2nd example of the scroll form of the drawing information by the drawing system in the 1st Embodiment of this invention. The figure which shows the 3rd example of the scroll form of the drawing information by the drawing system in the 1st Embodiment of this invention. The figure which shows the 4th example of the scroll form of the drawing information by the drawing system in the 1st Embodiment of this invention. The figure which shows the 5th example of the scroll form of the drawing information by the drawing system in the 1st Embodiment of this invention. The block diagram which shows the structural example of the drawing processing apparatus of the drawing system in the 2nd Embodiment of this invention. The figure which shows an example of the drawing input screen and all drawing information display screen which are displayed by the drawing system in the 2nd Embodiment of this invention. The figure which shows an example of the display form which overlap | superposed the drawing input screen and all drawing information display screen which are displayed with the drawing system in the 2nd Embodiment of this invention. The block diagram which shows the structural example of the drawing processing apparatus of the drawing system in the 3rd Embodiment of this invention. The figure which shows an example of the form of the automatic scroll of the drawing input screen displayed by the drawing system in the 3rd Embodiment of this invention, and the reduced display of all the drawing information display screens. 10 is a flowchart illustrating an example of a processing operation performed by a drawing system according to a third embodiment of the present invention. The figure which shows the structural example of the drawing system in the 4th Embodiment of this invention. The figure which shows the structural example of the drawing system in the 5th Embodiment of this invention. The block diagram which shows the structural example of the drawing processing apparatus of the drawing system in the 5th Embodiment of this invention. 10 is a flowchart illustrating an example of a processing operation performed by a drawing system according to a fifth embodiment of the present invention. The figure which shows an example of the display form which overlap | superposed the drawing input screen and all drawing information display screen which are displayed with the drawing system in the 5th Embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
First, a first embodiment of the present invention will be described.
FIG. 1 is a diagram illustrating a configuration example of a drawing system according to the first embodiment of the present invention.
This drawing system is a system having a drawing processing device 1, a drawing display device 2, and an input device 4, and it is easy to start writing when a user performs handwritten writing such as writing his / her own thoughts and ideas. And a system having a function of making it easy to continue writing.
The input device 4 is a device for a user to input drawing information by handwriting.
The drawing display device 2 is a device for displaying the drawing information input by the input device 4 on the drawing input screen 3.
Examples of the input device 4 for handwriting input include a pen tablet and a mouse input. Moreover, the method of pen-inputting with the tablet with a screen and tablet PC with which the tablet and the screen were united is mentioned. Another example is a method of inputting drawing information by touching with a finger such as a touch screen.

The drawing input screen 3 may be a window screen displayed on a display or the like, or may be a window in the above-described tablet PC screen.
In the example shown in FIG. 1, the drawing display device 2 is the above-described tablet with a screen, and the input device 4 is a pen for performing input to the tablet with a screen. In this case, the drawing information can be input by directly contacting the pen as the input device 4 inside the window of the drawing input screen 3 displayed on the screen of the tablet, and the pen on the drawing input screen 3 is touched. Drawing information such as lines and dots is displayed at the positions.

  Therefore, the part for detecting the position of the pen, which is a part of the input device 4, and the window display part on the drawing input screen 3 are physically the same. In this case, the drawing information input by handwriting input is a collection of two-dimensional coordinate groups that become a trajectory until the pen is released after being brought into contact with the tablet. In this way, the trajectory from when the pen is touched to when it is released is displayed as a single line or point, and information obtained by collecting these lines and points is the drawing information.

Note that when the input device 4 is the mouse described above, the drawing information is a collection of two-dimensional coordinate groups consisting of the locus of the cursor from the click-down of the mouse to the click-up.
The drawing information has attributes such as line thickness and color. The thickness and color are determined in advance, or by selecting an item of arbitrary thickness and color with a pen or mouse on a menu screen (not shown) temporarily displayed on the drawing input screen 3. There is a case. Or, to eliminate menu selection operations other than drawing, limit the line thickness and number of colors that can be set, use pen buttons and mouse buttons, and press them to select the type of button pressed In some cases, the line thickness or color assigned in advance is determined according to the number of times. Specifically, the color is changed by pressing a button on the pen, such as black → red → blue → eraser → black (return).

FIG. 2 is a block diagram illustrating a configuration example of the drawing processing apparatus of the drawing system according to the first embodiment of the present invention.
As shown in FIG. 2, the drawing processing device 1 of the drawing system according to the first embodiment of the present invention includes a control unit 11, a storage device 12, a scroll direction calculation unit 13, an automatic scroll processing unit 14, and a display control unit 15. And are connected to each other via a bus 16.

The storage device 12 includes a drawing information storage unit 17 for storing the drawing information input by the input device 4 together with the information on the drawing target area on the drawing screen of the drawing information.
The scroll direction calculation unit 13 calculates the scroll direction of the drawing information. The automatic scroll processing unit 14 automatically scrolls the drawing information in the drawing input screen according to the calculated scroll direction.

  The display control unit 15 displays the input drawing information and the drawing information stored in the drawing information storage unit 17 on the drawing input screen 3 that is a drawing screen based on the drawing target area information on the drawing information drawing screen. .

Hereinafter, an example of controlling scrolling according to drawing information will be described. The drawing information described here may include all the attributes described above, or may omit drawing information of a certain attribute.
The automatic scroll processing unit 14 can set the scroll amount according to the thickness of the pen, for example. In some cases, a line of the same color as the background of the drawing input screen 3 may be used instead of the eraser by inputting with the input device 4. The drawing information input in this way is used for scrolling by the automatic scroll processing unit 14 or the like. It may not be a decision factor.

  The drawing information input on the drawing input screen 3 is always held in the storage device 12 as coordinates in a two-dimensional coordinate space on the virtual drawing space that is a virtual drawing space. In the present embodiment, drawing information of a cutout area obtained by cutting out a partial area of the two-dimensional coordinate plane on the virtual drawing space is displayed in the window of the drawing input screen 3.

Therefore, when the drawing input screen 3 is opened, the storage device 12 holds data for associating the coordinates of the cutout region on the two-dimensional coordinate plane in the virtual drawing space with the coordinates of the drawing input screen 3.
Specifically, for example, the upper left coordinate value of the cutout area is stored as data for taking the above correspondence so that the upper left coordinate value of the cutout area becomes the upper left coordinate value on the drawing input screen 3. 12 to hold.

When drawing information is input from the drawing input screen 3, a coordinate value obtained by adding the upper left coordinate value of the cutout area to the coordinate value on the drawing input screen 3 is stored in the drawing information storage unit 17.
On the contrary, when the stored drawing information is redrawn on the drawing input screen 3, the drawing is redrawn based on the two-dimensional coordinate value obtained by subtracting the upper left coordinate value of the cutout area from the stored coordinate value. Is made.

  Note that the coordinate magnifications of the virtual drawing space and the drawing input screen may be set to be the same or different. For example, when the virtual drawing space is set to double the drawing space of the drawing input screen 3, the drawing information input from the drawing input screen 3 doubles the coordinate value on the drawing input screen. The coordinate values thus stored are stored in the drawing information storage unit 17 as two-dimensional coordinate values on the virtual drawing space. When the stored drawing information is redrawn on the drawing input screen 3 in accordance with scrolling or the like, the drawing is drawn on the screen based on a coordinate value obtained by halving the stored coordinate value.

The scrolling of the drawing information in the drawing input screen 3 by the automatic scroll processing unit 14 will be described. This scrolling changes the position of the cutout area from the virtual drawing space, for example, increases or decreases the upper left coordinate value of the cutout area by the necessary amount of scrolling, and also changes the position of the upper left coordinate value after this change. In addition, the above-described cutout area after scrolling is obtained as described above, and the drawing information in this area is redrawn in the window of the drawing input screen 3.
Thereby, the display position of the drawing information in the drawing input screen 3 is changed, and the drawing information is displayed as if it moved.

FIG. 3 is a diagram showing an example of a form of automatic scrolling of the drawing input screen in the drawing system according to the first embodiment of the present invention.
Therefore, the drawing information storage unit 17 holds the drawing information data input by the input device 4 including the two-dimensional coordinates on all the virtual drawing spaces, including the drawing information when it cannot be seen by scrolling. As shown in FIG. 3, the drawing input screen is a window on which drawing information obtained by cutting out a part of the drawing information on the virtual drawing space is displayed.

FIG. 4 is a flowchart illustrating an example of a processing operation performed by the drawing system according to the first embodiment of the present invention.
In the description of this process, the meanings of various variables are as follows.
(Point.x, Point.y): Coordinate value of drawing information on the drawing input screen
(Point_base.x, Point_base.y): Coordinate value of drawing information in the virtual drawing space
(DrawAeaPos.x, DrawAeaPos.y)… Upper left coordinate value of the cutout area for the 2D coordinate plane in the virtual drawing space
DrawAeaSize.x, DrawAeaSize.y… Size to cut downward from the upper left coordinate value and right size from the upper left coordinate value of the cutout area for the two-dimensional coordinate plane in the virtual drawing space
DrawWndSize.x, DrawWndSize.y ... Window size of the drawing input screen
(DrawAeaPos.x ', DrawAeaPos.y') ... Coordinate value after changing by the scroll amount of drawing information
(ScrollBorder.left, ScrollBorder.right, ScrollBorder.top, ScrollBorder.bottom) ... A range surrounded by a border in the drawing input screen
scrollValue.x, scrollValue.y… scroll amount
(Block.ix, Block.iy) ... The i-th set with drawing coordinate values (Point.x, Point.y) as one set
(Block.i_Center.x, Block.i_Center.y) ... Center coordinates of (Block.ix, Block.iy)
ScrolljudgeValue.x, ScrolljudgeValue.y ... criteria for determining the scroll direction
(Column.jx, Column.jy) ... For the extraction of center coordinate values (Block.i_Center.x, Block.i_Center.y), multiple coordinate values (Block.i_Center.x, Block.i_Center.y) The j-th set with
(Column.j_Center.x, Column.j_Center.y) ... Center coordinate value of (Column.jx, Column.jy)
ColumnjudgeValue.x, ColumnjudgeValue.y ... Criteria for judging direction reversal
(Block.i_size.x, Block.i_size.y) ... Size of (Block.ix, Block.iy)
For (Column.j_size.x, Column.j_size.y) ... (Column.jx, Column.jy), the minimum and maximum values of (Block.i_size.x, Block.i_size.y), or (Column .j_Center.x, Column.j_Center.y) + (Block.i_size.x, Block.i_size.y) average size

  As described above, the coordinate value of the drawing information input on the drawing input screen 3 is (Point.x, Point.y), and the coordinate value of the drawing information composed of two-dimensional coordinates on the virtual drawing space is ( Point_base.x, Point_base.y).

When a window of the drawing input screen is opened on the drawing input screen 3 by an operation on the drawing input screen 3 by the input device 4 (step S1), the display control unit 15 applies the two-dimensional coordinate plane on the virtual drawing space. Then, a cutout area is set as a window of the drawing input screen.
Here, the upper left coordinate value of the cutout area is set to (DrawAeaPos.x, DrawAeaPos.y), and the size of cutting out from the upper left coordinate value and the size of cutting out from the upper left coordinate value are respectively DrawAeaSize.x And DrawAeaSize.y. In addition, the size of the drawing input screen window is set to DrawWndSize.x and DrawWndSize.y.

  Note that DrawAeaSize.x, DrawAeaSize.y, DrawWndSize.x, and DrawWndSize.y are positive values. These values may be determined in advance, or may be set by sequentially inputting with the input device 4.

  Based on the two-dimensional coordinates on the virtual drawing space, which are the coordinate values of the existing drawing information stored in the drawing information storage unit 17, the display control unit 15 stores the existing information in the cutout area on the drawing input screen 3. If there is drawing information (YES in step S2), the coordinate values (Point_base.x, Point_base.y) of the already drawn drawing information composed of the two-dimensional coordinate values in the virtual drawing space are displayed in the drawing input screen. The upper coordinate values (Point.x, Point.y) are converted, and the existing drawing information is displayed on the drawing input screen 3 of the drawing display device 2 in accordance with the converted coordinate values (step S3).

  Specifically, the display control unit 15 has coordinates satisfying the following expressions (1) and (2) with respect to drawing information that is two-dimensional coordinates on the virtual drawing space stored in the drawing information storage unit 17. If a value (Point_base.x, Point_base.y) exists, the coordinate value is converted into a coordinate value (Point.x, Point.y) on the drawing input screen 3 according to the following expressions (3) and (4). The image is converted and drawn on the drawing input screen 3.

DrawAeaPos.x ≦ Point_base.x ≦ DrawAeaPos.x + DrawAeaSize.x (1)
DrawAeaPos.y ≤ Point_base.y ≤ DrawAeaPos.y + DrawAeaSize.y (2)
Point.x = (Point_base.x-DrawAeaSize.x) × (DrawWndSize.x / DrawAeaSize.x) Equation (3)
Point.y = (Point_base.y-DrawAeaSize.y) x (DrawWndSize.y / DrawAeaSize.y) Equation (4)
When the pen as the input device 4 is lowered by handwriting input by the input device 4 and a new drawing is performed on the drawing input screen 3, that is, when new drawing information is input from the drawing input screen 3 ( The display control unit 15 displays the drawing information in a window on the drawing input screen 3 and stores it in the drawing information storage unit 17 (step S5).

  Specifically, the drawing information according to the drawing coordinate values (Point.x, Point.y) input on the drawing input screen 3 with the origin at the upper left of the window on the drawing input screen 3 is displayed on the drawing input screen 3. The drawing coordinate values (Point.x, Point.y) are converted into two-dimensional coordinate values (Point_base.x, Point_base.y) on the virtual drawing space according to the following formulas (5) and (6). The converted information is stored in the drawing information storage unit 17.

Point_base.x = Point.x x (DrawAeaSize.x / DrawWndSize.x) + DrawAeaSize.x Equation (5)
Point_base.y = Point.y x (DrawAeaSize.y / DrawWndSize.y) + DrawAeaSize.y (6)
When the drawing information input during the period when the pen is lowered on the drawing input screen 3 is written in the scroll determination area, which is an area within a certain range from the boundary line of the drawing input screen 3, the scroll direction calculation unit 13 Detects this (step S6).

  When the pen as the input device 4 is released from the drawing input screen 3, that is, when the pen is lifted from the drawing input screen 3 (YES in Step S <b> 7), the scroll direction calculation unit 13 displays the drawing input screen 3. It is determined whether or not the drawing information input during the period from when the pen is lowered to when it is released is written in the scroll determination area described above (step S8).

  Further, the scroll direction calculation unit 13 determines whether or not the drawing information input during the period when the pen is lowered is written in the scroll determination area when a certain period has elapsed since the pen was lowered onto the drawing input screen 3. It may be determined.

  When it is determined that there is a writing in the scroll determination area (YES in step S8), the scroll direction calculation unit 13 calculates the scroll direction according to the drawing information for the period when the pen is lowered or the drawing information for a certain past period. (Step S9). If “NO” is determined in the processes in steps S2 and S7, the process returns to step S4.

The automatic scroll processing unit 14 performs a scroll process of the drawing contents on the drawing input screen according to the calculated scroll direction (step S10). After the process of step S10, when drawing is not completed (NO in step S11), the process returns to step S4, and when drawing is completed (YES in step S11), the processing operation is terminated.
If “NO” is determined in the process of step S4 or step S8 and drawing is not finished (NO in step S11), the process returns to step S4, and if drawing is finished (YES in step S11). The processing operation is finished.

In this scroll processing, drawing information in an area cut out from the virtual drawing space is acquired from the drawing information storage unit 17 in accordance with the calculated scroll direction, and the coordinate value of the acquired drawing information is displayed on the drawing input screen 3. It is to convert it to a coordinate value for redrawing.
Specifically, when scrolling of the drawing input screen occurs, the upper left coordinate value (DrawAeaPos.x, DrawAeaPos.y) of the cutout area in the virtual drawing space increases by the amount of scrolling, that is, the value shifted from the cutout area. Or decrease.

Based on the coordinate values (DrawAeaPos.x ', DrawAeaPos.y') after changing by the scroll amount, the drawing information of the area to be cut out is extracted, and the coordinate values for display on the drawing input screen 3 are recalculated. Will reappear.
As described above, if the scroll is not generated until the pen is released from the drawing input screen 3, the scrolling does not occur while the pen is being lowered, that is, during writing, so that the input of characters is disturbed. The user can easily perform the writing operation.
In addition, the scrolling is not limited to a mode in which the pen is raised, but the scrolling may be suspended for a certain time after the pen is released, and the scrolling may be started after the certain time has elapsed.

  You may set this fixed time for every user. For example, if the user's writing operation is fast, the fixed time until the scrolling starts after releasing the pen is shortened. If the user's writing operation is slow, the scrolling after releasing the pen starts. It is conceivable to lengthen a certain time until it is done.

  Specifically, the automatic scroll processing unit 14 uses the drawing coordinate value (Point.x, Point.y) in the scroll determination period, which is a period until the pen is lowered to the drawing input screen 3. Calculates the number Point_N within a certain period of time when drawing coordinate values (Point.x, Point.y) are input, or holds the time during which drawing information is input for a certain period of time Point_t when drawing coordinates are input And by calculating the time interval Point_t-Point_t 'calculated from the point Point_t' at which drawing coordinates were input one or more times before, the speed was obtained, and the constant was set to k according to this speed, The fixed time until the scrolling starts after releasing the pen is set as Point_N × k, (Point_t−Point_t ′) × k.

  Thus, by setting the waiting time until the scroll start timing, it becomes easier for the user to continuously write in the same position. Specifically, when a user writes a single character composed of a plurality of lines to the scroll determination area, the user can continue to draw a line without releasing time even if the pen is released. Therefore, the lines constituting the character can be written at the same place, and the input of the character is not disturbed and becomes easy to write.

  In addition, as a method for calculating the scroll direction according to the writing operation of the user by the scroll direction calculation unit 13, an area within a certain range from the boundary line of the drawing input screen 3 with respect to the drawing during the past fixed time. There is a method of detecting whether or not there is writing and calculating a drawing closest to the boundary line and a direction in which the boundary line spreads. For example, as shown in FIG. 5, when writing is performed at a position close to the upper boundary line on the drawing screen, the drawing information is scrolled down in order to increase the writing space in the upper part on the screen.

  In addition, when there is a writing on the right border of the drawing input screen 3 as shown in FIG. 6, the drawing information is scrolled to the left, and there is a writing at the upper left of the drawing input screen as shown in FIG. Scrolls the drawing information to the lower right.

  A specific algorithm for scroll determination and scroll direction calculation will be described. Here, the drawing coordinate values (Point.x, Point.y) input on the drawing input screen 3 from when the pen as the input device 4 is lowered to the drawing input screen 3 to when the pen is raised are displayed in the drawing input screen 3. An example of determining the occurrence of scrolling and calculating the scroll direction by detecting whether or not the range surrounded by the upper, lower, left, and right borders (ScrollBorder.left, ScrollBorder.right, ScrollBorder.top, ScrollBorder.bottom) is exceeded explain.

  ScrollBorder.left is the x coordinate on the left side of the window, ScrollBorder.right is the x coordinate on the right side of the window, ScrollBorder.top is the y coordinate on the upper side of the window, and ScrollBorder.bottom is the y coordinate on the lower side of the window. The right direction of the window is the positive direction of the x coordinate, and the downward direction of the window is the positive direction of the y coordinate.

  The scroll direction calculation unit 13 determines that if Point.x <ScrollBorder.left in the drawing coordinate value (Point.x, Point.y) within the scroll determination period until the pen is lowered to the drawing input screen. Set -scrollValue.x as the scroll amount, scroll the drawing information to the right, and if Point.x> ScrollBorder.right, set scrollValue.x as the scroll amount. As a result, the drawing information scrolls to the left.

  Further, the scroll direction calculation unit 13 sets -scrollValue.y as the scroll amount if Point.y <ScrollBorder.top. As a result, the drawing information scrolls down. Also, the scroll direction calculation unit 13 sets scrollValue.y as the scroll amount if Point.x> ScrollBorder.bottom. As a result, the drawing information scrolls up.

  Note that scrollValue.x and scrollValue.y are preset positive scroll amounts. In addition, when scrollValue.x and scrollValue.y are set as scroll amounts, if the scroll amount set earlier in the same scroll determination period is large, the scroll amount may be prioritized.

  Then, when the pen is lifted, the automatic scroll processing unit 14 uses the upper left coordinate values (DrawAeaPos.x ', DrawAeaPos.y') of the area to be cut out from the virtual drawing space after scrolling as the drawing contents to be displayed on the drawing input screen. ) Is calculated according to the following equations (7) and (8).

DrawAeaPos.x '= DrawAeaPos.x + scrollValue.x (7)
DrawAeaPos.y '= DrawAeaPos.y + scrollValue.y (8)
Then, the automatic scroll processing unit 14 uses the DrawAeaPos.x ′ and DrawAeaPos.y ′ after the change, and draws the drawing information input by the input device 4 composed of the two-dimensional coordinate values in the virtual drawing space. Extract the coordinate value (Point_base.x, Point_base.y), convert this coordinate value to the coordinate value on the drawing input screen, and redraw the drawing information after scrolling on the drawing input screen based on this coordinate value .

Further, the scroll direction calculation unit 13 may calculate the scroll direction by estimating the drawing direction to be written using the past drawing information. For example, when drawing coordinates within a certain period of time or a series of drawings are made into one lump (specifically, a single character or picture), the direction in which the lump is written changes the center or centroid position of each lump. Scroll to free up this space so that you can continue to write in this direction.
Specifically, as shown in FIG. 8, since the center or the center of gravity of the lump is changed downward, the writing direction is estimated as the downward direction, and the upward direction is set as the scroll direction.

  In addition, as a specific algorithm example for calculating the scroll direction, the i-th set (Point.x, Point.y) is a set of drawing coordinate values (Point.x, Point.y) within a certain period of time within a set time period ( For example, the center coordinate values (Block.i_Center.x, Block.i_Center.y) of Block.ix and Block.iy are calculated.

  The center coordinate value (Block.i_Center.x, Block.i_Center.y) is the average value of the n + m + n drawing coordinate values (Point.x, Point.y) from n in a certain time or in a series of drawing. . n to m + n may be a drawing coordinate set for the time from time t0 to time t1, or a drawing coordinate set from when the pen is lowered to when it is released.

Further, since one character or picture is made into one lump, even if the pen is once raised, it may be collected as one set if the pen is lowered again within a set period. Moreover, although it was set as the average value in order to set it as a center coordinate, it may be set as a gravity center coordinate.
When the following formulas (9) and (10) are satisfied with respect to the center coordinate values (Block.i_Center.x, Block.i_Center.y) described above, the automatic scroll processing unit 14 sets -scrollValue as the scroll amount. .x is set and scrollValue.x is set as the scroll amount when equation (9) and the following equation (11) hold.

| Block.i-1_Center.x-Block.i_Center.X |> ScrolljudgeValue.x Expression (9)
Block.i-1_Center.x-Block.i_Center.x> 0 ... Formula (10)
Block.i-1_Center.x-Block.i_Center.x <0 ... Formula (11)
The automatic scroll processing unit 14 sets -scrollValue.y as the scroll amount when the following expressions (12) and (13) hold, and the expression (12) and the following expression (14) hold Sets scrollValue.y as the scroll amount.

| Block.i-1_Center.y-Block.i_Center.y |> ScrolljudgeValue.y… Formula (12)
Block.i-1_Center.y-Block.i_Center.y> 0 ... Formula (13)
Block.i-1_Center.y-Block.i_Center.y <0 ... Formula (14)
ScrolljudgeValue.x and ScrolljudgeValue.y are preset positive values. These settings are for determining the scroll direction, but no scrolling action occurs.For example, there is no writing in the area in the range from the border line of the drawing input screen set as the scroll determination area, and the scroll situation is It may not occur. Also, the scroll determination area may change depending on the drawing information to be written, or the scroll start time may change. These will be described later.

  Furthermore, it is also possible to calculate a direction in which a plurality of characters are written as one lump (for example, a line). Specifically, as shown in FIG. 9, drawing information for a certain period of time is acquired for a longer time, and a plurality of chunks are taken as one chunk, and the center or center of gravity position of this chunk changes downward. The writing direction is assumed to be the downward direction, and the upward direction is the scroll direction.

  Specifically, the automatic scroll processing unit 14 further extracts a plurality of coordinate values (Block.i_Center.x, Block.i_Center.) For the extraction of the center coordinate values (Block.i_Center.x, Block.i_Center.y). The center coordinate value (Column.j_Center.x, Column.j_Center.y) of the j-th set (Column.jx, Column.jy) with y) as one set is calculated.

  This coordinate value (Column.j_Center.x, Column.j_Center.y) is a set of coordinate values (Block.i_Center.x, Block.i_Center.y) from N to M + Nth or from time T0 to T1 It may be. Further, when the direction of the coordinate values (Block.i_Center.x, Block.i_Center.y) changes greatly, for example, when the following equation (15) or equation (16) holds, the automatic scroll processing unit 14 Assuming that the direction is reversed, the center coordinate value (Column.j_Center.x, Column.j_Center.y) is calculated using the previous coordinate values (Block.i_Center.x, Block.i_Center.y) as a lump of lines. .

(Block.i-1_Center.x-Block.i_Center.x) / (Block.i-2_Center.x-Block.i-1_Center.x))>-ColumnjudgeValue.x Expression (15)
(Block.i-1_Center.y-Block.i_Center.y) / (Block.i-2_Center.y-Block.i-1_Center.y))>-ColumnjudgeValue.y (16)
Note that ColumnjudgeValue.x and ColumnjudgeValue.y are positive values set in advance.

  Then, the automatic scroll processing unit 14 uses the calculated coordinate values (Column.j_Center.x, Column.j_Center.y) as the scroll amount when the following expressions (17) and (18) are satisfied: scrollValue.x is set, and scrollValue.x is set as the scroll amount when Expression (17) and the following Expression (19) hold.

| Column.j-1_Center.x-Column.j_Center.x |> ScrolljudgeValue.x Expression (17)
Column.j-1_Center.x-Column.j_Center.x> 0 ... Formula (18)
Column.j-1_Center.x-Column.j_Center.x <0 Expression (19)
The automatic scroll processing unit 14 sets -scrollValue.y as the scroll amount when the following expressions (20) and (21) hold, and when the expression (20) and the following expression (22) hold Sets scrollValue.y as the scroll amount.

| Column.j-1_Center.y-Column.j_center.y |> ScrolljudgeValue.y… Formula (20)
Column.j-1_Center.y-Column.j_Center.y> 0 ... Formula (21)
Column.j-1_Center_y-Column.j_Center.y <0 ... Formula (22)
The scroll parameters may be set in advance or may be changed according to the user's writing operation. The user's writing operation refers to the drawing position and drawing time, specifically the drawing size within a certain time or the drawing size of one connection, the drawing speed, the drawing direction, the drawing time of the line or point, the next line or For example, the time interval until drawing of a point is started.

  The parameters of the automatic scroll function include the size of the scroll determination range, the scroll start time for drawing, the scroll amount to be expanded by scrolling, and the scrolling speed. For example, if the speed of writing by the user is high, it is conceivable to widen the scroll determination area and to advance the scroll start time in order to scroll early.

In addition, since it is difficult for the user to write if the scroll operation occurs many times, even if the scroll amount per time is changed according to the user's write operation so that automatic scrolling does not occur frequently. Good.
Also, the scroll amount may be changed in order to scroll a necessary amount so as to leave a certain amount of space for writing. For example, if the writing speed is fast or if a lump of drawings is large, the scroll amount can be widened to make a large space.

  As an example of changing the scroll amount in accordance with the drawing speed, the automatic scroll processing unit 14 sets the scroll amount as a scroll amount when the above-described equations (9) and (10) hold for a preset constant k. -(Block.i-1_Center.x-Block.i_Center.x) × k is set, and if the above formulas (9) and (11) hold, the scroll amount is (Block.i-1_Center.x-Block .i_Center.x) × k is set.

  The automatic scroll processing unit 14 sets − (Block.i-1_Center.y-Block.i_Center.y) × k as the scroll amount when the above-described equations (12) and (13) are satisfied, When the expressions (12) and (14) described above hold, (Block.i-1_Center.y-Block.i_Center.y) × k is set as the scroll amount.

  An example of changing the scroll determination area according to the drawing speed is to change the determination area according to the previous | Block.i-2_Center.x-Block.i-1_Center.x |. . Specifically, the automatic scroll processing unit 14 resets as ScrolljudgeValue.x ′ = ScrolljudgeValue.x + (Block.i−2_Center.x−Block.i−1_Center.x) × L.

  Similarly, the scroll start time can be changed from this value. L is a positive constant set in advance. Of course, (Point.x, Point.y) may be used instead of the coordinate values (Block.i_Center.x, Block.i_Center.y).

  In addition, as an example of changing the scroll amount, the scroll determination area, or the space start time according to the drawing information, a single set of drawing coordinate values (Point.x, Point.y) within a certain period of time or a series of points. For the i-th set as one set, the i-th set (Block.ix, Block.iy) obtained from the minimum and maximum values of the coordinate values (Point.x, Point.y) belonging to this set It may be changed based on the size (Block.i_size.x, Block.i_size.y).

  For example, the automatic scroll processing unit 14 calculates the scroll amount as Block.i_size.x × LL when scrolling in the x direction, and calculates the scroll amount as Block.i_size.y × LL when scrolling in the y direction. . LL is a preset positive constant.

  Further, when the presence of a line is detected by the above-described line determination and a lump of one line is extracted, a scroll amount or the like may be set from a value related to the line. For example, the automatic scroll processing unit 14 sets this set for the j-th set (Column.jx, Column.jy) having a plurality of sets (Block.ix, Block.iy) determined as rows as one set. Minimum and maximum values of (Block.i_size.x, Block.i_size.y), or (Column.j_Center.x, Column.j_Center.y) + (Block.i_size.x, Block.i_size.y) Set the scroll amount from the average size (Column.j_size.x, Column.j_size.y).

  The automatic scroll processing unit 14 calculates the scroll amount as Column.j_size.x × LLL when scrolling in the x direction, and calculates the scroll amount as Column.j_size.y × LLL when scrolling in the y direction. . LLL is a preset positive constant.

  Further, as another example of changing the scroll amount per time in accordance with the user's writing operation so as not to generate much automatic scrolling, a drawing direction is estimated, for example, as shown in FIG. In the case of scrolling for writing in the horizontal direction, it is troublesome to scroll one character at a time, so scroll so that there is a space where characters can be written to some extent.

  However, as shown in FIG. 9, when horizontal lines are written in succession, scrolling is performed so that a space is freed by a scroll amount of one line (width of one character). For example, it is detected whether there is a line by the above-described line determination, and when there is no line switching and the line is detected as only one direction, the line moves only in one direction as shown in FIG. As described above, the automatic scroll processing unit 14 calculates the moving direction from a certain time or a plurality of (Block.ix, Block.iy) as described above, and the certain time or a plurality of times that are the same axis as the moving direction. The scroll amount, the scroll determination area, or the scroll start time is calculated by setting Block.i_size.x × LLLL and Block.i_size.y × LLLL.

Note that LLLL is a positive constant set in advance, and is set to a size that allows a certain amount of characters to be written, for example, the size of a plurality of characters. Alternatively, if there is a line change and it is detected that there are a plurality of lines, the automatic scroll processing unit 14 determines that there is a line as shown in FIG. Is calculated from a certain time or multiple (Column.jx, Column.jy), and the same axis as this movement direction is a certain time or multiple Column.j_size.x × LLLL 'or Column.j_size.y × A scroll amount, a scroll determination area, or a scroll start time is calculated from LLLL ′.
Note that LLLL 'is a positive constant set in advance, and is set to a size that can write, for example, one line or two lines of characters.

In addition, as a form of scrolling, there is a case of scrolling at a stretch for the space to be expanded, but gradually scrolling so that it is easy to understand that it is scrolling and the user's writing state can be matched even if scrolling starts. A method of making it possible is conceivable.
In this case, scrolling starts and scrolls gradually to the desired scroll amount, but if there is a writing during this time, scrolling is interrupted, and when the pen is raised, it starts again after waiting for a certain time or similarly. Is mentioned.

As a specific algorithm, a first timer is set after the pen is released, and the first timer is started by setting to notify after time T1. This time T1 is a value related to a certain time after releasing the pen until scrolling starts.
When there is a notification that the time T1 has elapsed, the first timer is ended and the second timer is set, and the second timer is started by setting to notify after the time T2. Note that the scroll determination and the scroll direction calculation described so far are performed between Tl and T2.

  Each time there is a notification that the time T2 has elapsed, it is determined whether the pen is not lowered at that time, that is, whether writing is in progress. If writing is in progress, the second timer is ended, the first timer is set again, and the first timer is started by setting to notify after time T1.

  If writing is not in progress, the scroll amount scrollValue.x or scrollValue.y is scrolled by scrollValue.x / R or scrollValue.y / R (R> 1) set to gradually scroll.

Each time this scrolling gradually, it is determined whether the total scroll amount has reached scrollValue.x or scrollValue.y. If not, it waits for the notification that the time T2 has elapsed, and if it has reached, the second timer is ended. To do.
As described above, in the drawing system according to the first embodiment of the present invention, a space for writing is prepared by automatic scrolling, and the user can continue writing without interrupting the writing operation. In addition, writing spaces appear and feel like they are presented one after another, making users more eager to write and having fun writing.

In addition, since it scrolls according to the movement of the user, it does not interfere with easy writing. For example, the user does not scroll while writing, but is scrolled when the pen is released, so the line is not disturbed and is not disturbed while writing.
In addition, the user does not scroll for a certain time after releasing the pen, and can set this fixed time with a waiting time according to the user's action, so that the user can continue to write characters after releasing the pen. If you want, there is an advantage that it is easy to write.

  In addition, by estimating and controlling the scroll direction and scroll amount according to the user's writing operation, for example, when writing continuously in the vertical direction or horizontal direction and when writing horizontally written lines side by side continuously By setting the scroll amount according to the situation, a certain amount of writing space is presented by scrolling once, and it becomes easy to continue writing without causing the scroll operation many times.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. Note that the description of the same parts in FIG.
In this embodiment, in addition to the drawing input screen, there is an all drawing information display screen that displays all the drawing information composed of two-dimensional coordinates on the virtual drawing space stored in the drawing information storage unit 17. The drawing input screen is a screen in which a part of the entire drawing information display screen is enlarged and displayed for drawing, that is, a part of the entire drawing information display screen is cut out. Further, the location to be cut out moves in accordance with the scrolling of the drawing input screen.
FIG. 10 is a block diagram illustrating a configuration example of a drawing processing apparatus of the drawing system according to the second embodiment of the present invention.
As shown in FIG. 10, the drawing processing apparatus 1 according to the second embodiment of the present invention further includes a full screen information display processing unit 21 as compared with the first embodiment.

FIG. 11 is a diagram illustrating an example of a drawing input screen and a total drawing information display screen displayed by the drawing system according to the second embodiment of the present invention.
As an implementation method, the full-screen information display processing unit 21 sets the size of this virtual drawing space in advance for drawing information that is two-dimensional coordinates on the virtual drawing space stored in the drawing information storage unit 17. Then, the magnification for converting the drawing information is calculated from the size of the virtual drawing space and the size of the entire drawing information display screen.

  The full screen information display processing unit 21 calculates the coordinate value of the drawing information to be drawn on the full drawing information display screen from the magnification of the size of the full drawing information display screen with respect to the virtual drawing space, and the drawing information according to the coordinate value Is displayed on the entire drawing information display screen. In addition, when the entire drawing information display screen is narrower than the size of the virtual drawing space for displaying all drawing information, the entire drawing information display screen is displayed at a constant reduction ratio with respect to the size of the virtual drawing space. Will be.

  If such a process is performed, the drawing content cut out on the drawing input screen with respect to the drawing information displayed on the entire drawing information display screen is enlarged and displayed. Further, the information input from the drawing input screen is reduced and drawn on the entire drawing information display screen at a magnification opposite to the enlargement magnification. Therefore, the user can write drawing information greatly by using the enlarged drawing input screen, and it becomes easy to write.

  A specific algorithm example is given. First, the size of the virtual drawing space for drawing the drawing information data (Point_base.x, Point_base.y) input by the input device 4, which is composed of two-dimensional coordinates on the virtual drawing space, is set to BaseAeaSize.x, BaseAeaSize. .y, and the size of the entire drawing information display screen is WholeWndSize.x and WholeWndSize.y.

  Then, the full-screen information display processing unit 21 uses the following formula to calculate the coordinate values (Point_base.x, Point_base.y) of the drawing information input by the input device 4, which are configured with two-dimensional coordinate values in the virtual drawing space. According to (23) and (24), the coordinate values (Point_WholeWnd.x, Point_WholeWnd.y) of the entire drawing information display screen are converted and displayed on the entire drawing information display screen. This conversion formula is as follows.

Point_WholeWnd.x = Point_base.x × (WholeWndSize.x / BaseAeaSize.x) Expression (23)
Point_WholeWnd.y = Point_base.y x (WholeWndSize.y / BaseAeaSize.y) ... Formula (24)
In addition, since the drawing information cut out on the drawing input screen is enlarged and displayed relative to the drawing information displayed on the entire drawing information display screen, the magnification of the size of the entire drawing information display screen with respect to the virtual drawing space is displayed. (WholeWndSize.x / BaseAeaSize.x, WholeWndSize.y / BaseAeaSize.y) is 1 or less, and this magnification is the drawing input screen for the area to be cut out as the drawing input screen window in the two-dimensional coordinate plane on the virtual drawing space. The value is smaller than the window size magnification (DrawWndSize.x / DrawAeaSize.x, DrawWndSize.y / DrawAeaSize.y).

The full screen information display processing unit 21 uses the following formulas (25) and (25) so that the aspect ratio of the drawing information displayed on the full drawing information display screen and the drawing information drawn on the drawing input screen is the same. The drawing coordinates may be converted according to 26).
WholeWndSize.y / BaseAeaSize.y = WholeWndSize.x / BaseAeaSize.x Equation (25)
DrawWndSize.y / DrawAeaSize.y = DrawWndSize.x / DrawAeaSize.x Equation (26)
In this example, the coordinates on the drawing input screen that are input from the drawing input screen and are drawn on the drawing input screen, and the coordinates on the entire drawing information display screen that are drawn on the entire drawing information display screen are both in the virtual drawing space. The coordinates are converted to the two-dimensional coordinates of each, but the coordinates on the entire drawing information display screen are directly changed from the coordinates on the drawing input screen without passing through the two-dimensional coordinates on the virtual drawing space. Alternatively, the coordinates on the entire drawing information display screen may be converted to the coordinates on the drawing input screen.

  However, by using the two-dimensional coordinates on the virtual drawing space, the coordinates on the drawing input screen and the coordinates on the entire drawing information display screen can be handled independently, and resetting each magnification does not affect each other. For example, even if the drawing magnification of the entire drawing information display screen is changed, there is no need to recalculate the coordinate magnification on the drawing input screen.

  As another display mode, the entire drawing information display screen is always displayed, whereas the drawing input screen is not normally started. By selecting the entire drawing information display screen with the input device 4, a drawing input screen for drawing at a corresponding position can be displayed. As a result, the user can not only scroll but also immediately select a place to draw.

FIG. 12 is a diagram showing an example of a display form in which a drawing input screen displayed by the drawing system according to the second embodiment of the present invention and an entire drawing information display screen are overlaid.
As a display method, there is a method of displaying the drawing input screen side by side with the entire drawing information display screen. However, in order to use the screen space efficiently, the drawing input screen is displayed while the drawing input screen being drawn is started. The input screen may be superimposed on the entire drawing information display screen as shown in FIG. 12, and the drawing input screen may be displayed translucently so that the user can see the entire drawing information display screen behind.

  With such a display form, the user can see both the drawn part and the whole at the same time even if the screen itself is narrow. Furthermore, by adding an image composed of four lines such as a frame to the entire drawing information display screen so that the user can understand where the drawing input screen is the drawing screen of the entire drawing information display screen. A drawing area may be indicated.

  As described above, in the drawing system according to the second embodiment of the present invention, the drawing displayed on the entire drawing information display screen is separated from the drawing input screen and the entire drawing information display screen on which all drawing information is displayed. On the other hand, since the enlarged drawing input screen is used, the user can write large and easy to write.

  In addition, the drawing input screen is superimposed on the entire drawing information display screen, and the drawing input screen is displayed in a translucent manner so that the user can see the entire drawing information display screen behind, so that the user can draw even on a narrow screen. You can see both the part and the whole at the same time.

(Third embodiment)
Next, a third embodiment of the present invention will be described.
The drawing system in the present embodiment has a function of reducing and displaying the drawing contents on the entire drawing information display screen according to the expansion of the writing range of the entire drawing information display screen described in the second embodiment.
FIG. 13 is a block diagram illustrating a configuration example of a drawing processing apparatus of the drawing system according to the third embodiment of the present invention.
As shown in FIG. 13, the drawing processing apparatus 1 according to the third embodiment of the present invention further includes a reduced display processing unit 22 as compared with the second embodiment.
FIG. 14 is a diagram showing an example of a form of automatic scrolling of the drawing input screen displayed by the drawing system and reduction display of the entire drawing information display screen displayed by the drawing system according to the third embodiment of the present invention.
FIG. 15 is a flowchart illustrating an example of a processing operation performed by the drawing system according to the third embodiment of the present invention.
First, the reduced display processing unit 22 continues to write on the drawing input screen for the virtual drawing space to be drawn on the entire drawing information display screen, the size of which has been set in advance, thereby scrolling this space. When the above writing is performed or when the drawing input screen is started up, the position that has already protruded from the entire drawing information display screen is cut out, and it is determined that the writing range has been expanded when drawing is performed on the protruding portion (step YES in S21 and S22).

  When the reduced display processing unit 22 determines that the writing range has expanded, based on all the drawing information stored in the drawing information storage unit 17 and the newly added drawing information, these drawing information is transferred to the all drawing information display screen. In order to be able to display all, the reduction ratio for displaying the entire drawing information display screen is recalculated (step S24).

The reduced display processing unit 22 calculates the coordinates of the drawing information stored in the drawing information storage unit 17 and the newly added drawing information according to the reduction ratio, and displays the coordinates on the entire drawing information display screen according to the coordinates. Redrawing is performed (step S25).
On the other hand, when the reduced display processing unit 22 determines that the writing range is not widened (NO in step S22), the reduced display processing unit 22 draws drawing information on the entire drawing information display screen with the set reduction rate (step S23). After the process of step S23 or S25, when the drawing is not completed (NO in step S26), the process returns to the process of step S21. When the drawing is completed (YES in step S26), the processing operation is terminated.

  As a specific algorithm example, drawing data (Point_base.x, Point_base.y) composed of two-dimensional coordinates on the virtual drawing space and inputted by the input device 4 is displayed as follows. The area coordinates of the virtual drawing space preset as the existing plane space are assumed to be BaseAea.left, BaseAea.right, BaseAea.top, BaseAea.bottom.

BaseAea.left is the x coordinate on the left side of the drawing space, BaseAea.right is the x coordinate on the right side of the drawing space, BaseAea.top is the y coordinate on the upper side of the drawing space, and BaseAea.bottom is the lower side of the drawing space. It corresponds to the y coordinate.
The right direction of the drawing space is the positive direction of the x coordinate, and the downward direction of the drawing space is the positive direction of the y coordinate.

  In addition, the reduced display processing unit 22 calculates the sizes of the virtual drawing spaces set in advance, BaseAeaSize.x and BaseAeaSize.y, according to the following equations (27) and (28). It is converted to the coordinates of the information display screen and displayed on the entire drawing information display screen.

BaseAeaSize.x = BaseAea.right-BaseAea.left ... Formula (27)
BaseAeaSize.y ＝ BaseAea.bottom-BaseAea.top… Formula (28)
In addition, the reduced display processing unit 22 includes the coordinate values (Point_base.x, Point_base.x, the drawing information input by the input device 4 configured with the drawing coordinate values of the virtual drawing space at the first time before the drawing magnification is reduced. Point_base.y) is converted into coordinate values (Point_WholeWnd.x, Point_WholeWnd.y) to be drawn on the entire drawing information display screen by the following equations (29) and (30).

Point_WholeWnd.x = Point_base.x x (WholeWndSize.x / BaseAeaSize.x) + BaseAea.left (29)
Point_WholeWnd.y = Point_base.y x (WholeWndSize.y / BaseAeaSize.y) + BaseAea.top ... (30)
Here, the first time before the drawing magnification is reduced is BaseAea.left = 0 and BaseAea.top = 0.
The reduced display processing unit 22 converts the drawing information coordinate values (Point.x, Point.y) input from the drawing input screen 3 into the drawing information coordinate values in the virtual drawing space. It is detected whether the coordinate values (Point_base.x, Point_base.y) protrude from the region coordinates of the preset virtual drawing space, for example, by scrolling the drawing input screen.

  If the drawing input screen protrudes from the above-described region coordinates of the virtual drawing space, the reduced display processing unit 22 sets the region coordinates of the virtual drawing space to BaseAea.left 'and BaseAea.right' so as to include the protruding region. , BaseAea.top 'and BaseAea.bottom', and expand the virtual drawing space by changing the size to BaseAeaSize.x 'and BaseAeaSize.y'.

  Then, the reduced display processing unit 22 recalculates the magnification of the size of the entire drawing information display screen with respect to the size of the virtual drawing space, and the coordinate value of the drawing information display screen at the recalculated magnification. And the drawing information is displayed on the entire drawing information display screen based on the conversion result.

Also in this case, the drawing coordinates are converted by the following equations (31) and (32) so that the aspect ratio of the drawing displayed on the entire drawing information display screen and the drawing information displayed on the drawing input screen is the same. There is a case.
WholeWndSize.y / BaseAeaSize.y = WholeWndSize.x / BaseAeaSize.x Equation (31)
DrawWndSize.y / DrawAeaSize.y = DrawWndSize.x / DrawAeaSize.x Equation (32)
Hereinafter, this conversion will be described. The aspect ratio is set to Ratio_W vs. Ratio_H.

  Specifically, the reduced display processing unit 22 inputs the drawing information data (Point_base.x, Point_base.y) input by the input device 4 and configured by two-dimensional coordinates on the virtual drawing space. When the data of the drawing information input by the device 4 protrudes only to the left from the virtual drawing space, that is, when the following expressions (33) and (34) are satisfied, the following expressions (35), (36), By (37), (38), (39), (40), the area coordinates and size of the virtual drawing space are reset.

Point_base.x <BaseAea.left ... Formula (33)
Point_base.y ≧ BaseAea.top… Formula (34)
BaseAea.left '= Point_base.x ... Formula (35)
BaseAeaSize.x '= BaseAea.right-BaseAea.left' ... Formula (36)
BaseAeaSize.y '= BaseAeaSize.x' x (Ratio_H / Ratio_W) ... Formula (37)
BaseAea.top '= BaseAea.top ... Formula (38)
BaseAea.right '＝ BaseAea.right… Formula (39)
BaseAea.bottom '= BaseAea.top' + BaseAeaSize.y '... Formula (40)
The reduced display processing unit 22 recalculates the magnification of the size of the entire drawing information display screen relative to the virtual drawing space for these values, recalculates and draws the coordinate values to be drawn on the entire drawing information display screen, and draws them. cure.

Specifically, the reduced display processing unit 22 obtains coordinate values (Point_WholeWnd.x ′, Point_WholeWnd.y ′) to be drawn on the recalculated all drawing information display screen according to the following equations (41) and (42).
Point_WholeWnd.x ′ = Point_base.x × (WholeWndSize.x / BaseAeaSize.x ′) + BaseAea.left ′ (Formula 41)
Point_WholeWnd.y ′ = Point_base.y × (WholeWndSize.y / BaseAeaSize.y ′) + BaseAea.top ′ (Formula 42)
In this example, since the aspect ratio is constant, WholeWndSize.y / BaseAeaSize.y ′ = WholeWndSize.x / BaseAeaSize.x ′.
Further, an example will be given in which the drawing information data input by the input device 4 protrudes not only to the left but also upward from the virtual drawing space.

That is, the reduced display processing unit 22 performs calculations according to the following formulas (45) and (46) if the following formulas (43) and (44) are satisfied.
Point_base.x <BaseAea.left ... Formula (43)
Point_base.y <BaseAea.top ... Formula (44)
BaseAea.left '= Point_base.x ... Formula (45)
BaseAea.top '= Point_base.y ... Formula (46)
Here, if the following expression (47) is satisfied, the reduced display processing unit 22 performs calculations according to the following expressions (48), (49), (50), and (51).

(BaseAea.right-BaseAea.left ')>(BaseAea.bottom-BaseAea.top') x (Ratio_W / Ratio_H) ... (47)
BaseAeaSize.x '= BaseAea.right-BaseAea.left' ... Formula (48)
BaseAeaSize.y '= BaseAeaSize.x' x (Ratio_H / Ratio_W) ... Formula (49)
BaseAea.right '= BaseAea.right ... Formula (50)
BaseAea.bottom '= BaseAea.top' + BaseAeaSize.y '... Formula (51)
On the other hand, if the following expression (52) is satisfied, the reduced display processing unit 22 performs calculations according to the following expressions (53), (54), (55), and (56).

(BaseAea.right-BaseAea.left ') ≤ (BaseAea.bottom-BaseAea.top') x (Ratio_W / Ratio_H) ... (52)
BaseAeaSize.y '= BaseAea.bottom-BaseAea.top' ... Formula (53)
BaseAeaSize.x ′ = BaseAeaSize.y ′ × (Ratio_W / Ratio_N) Expression (54)
BaseAea.right '= BaseAea.left' + BaseAeaSize.x '(Formula 55)
BaseAea.bottom '= BaseAea.bottom (Formula 56)
In addition, the same calculation can be performed when it protrudes to the top, right, or bottom. In the above example, every time drawing information is input from the drawing input screen, it is detected whether it is outside the virtual drawing space, and the coordinate values to be drawn on the entire drawing information display screen are recalculated and redrawn. For example, each time drawing information is input from the drawing input screen, it detects whether or not it is out of the virtual drawing space, but the drawing coordinates within a certain period of time or a continuous drawing from lowering the pen to raising it At the stage where the coordinates have been input, the redrawing load may be reduced by recalculating and redrawing the coordinate values to be drawn on the entire drawing information display screen.

  As described above, in the drawing system according to the third embodiment of the present invention, the space for writing by the user becomes infinite, and writing can be continued without limitation. In this way, the entire drawing information display screen is reduced and displayed as the writing range increases, but the scale of the drawing input screen which is this input screen does not change. As a result, the user can easily write because the same size is maintained and writing can be performed with the same quality when writing.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described. In the present embodiment, a plurality of drawing systems are connected by a network, and drawing information from other systems is written by transmitting and receiving drawing information between the drawing systems, thereby enabling cooperative drawing.
FIG. 16 is a diagram illustrating a configuration example of a drawing system according to the fourth embodiment of the present invention.
As shown in FIG. 16, in the drawing system according to the fourth embodiment of the present invention, a plurality of drawing processing devices 1 are positioned as clients, and these are connected to a server 30 via a network.

  When each client receives drawing information from another client, the drawing information is stored in the drawing information storage unit 17 together with information on the drawing target area on the drawing screen of the drawing information. It is reflected in the drawing information drawn by.

  The server 30 receives drawing information from each client and transfers it to other clients. The server 30 transfers drawing information and has an entire drawing information display screen for drawing this information, and projects it on the display or the previous screen. In the example shown in FIG. 16, the server 30 projects the entire drawing information display screen on the screen 32 by the projection device 31.

  Also, the server-side display screen may be displayed in a reduced size as the writing range is widened, like the all drawing information screen of the client. Accordingly, similarly to the client, the server 30 stores the drawing information sent from all the clients as two-dimensional coordinates on the virtual drawing space in the storage device, and uses the stored drawing information at the time of redrawing.

  Further, the client adds the drawing information of the other clients transferred from the server 30 to the entire drawing information screen or the drawing input screen, draws it, and stores it in the drawing information storage unit 17. The client may store the drawing information in the order of the drawing information sent from the server 30 so that the order of the drawing information held by all the clients is the same.

  That is, when the client is not connected to the server 30, the drawing information is stored in the order input from the drawing input screen. When the client is connected to the server 30, the drawing input from the drawing input screen is stored. Information is once sent to the server 30 and stored in the order in which the information was transferred from the server 30.

However, the initial drawing on the drawing input screen or the previous drawing information input screen may be performed at the time of input so as to maintain smooth writing ease. Alternatively, a method may be used in which time stamps are attached to the drawing information for each client and the drawing information is determined to be drawn in this order.
By arranging the drawing order in this way, the same drawing screen is obtained even if an event occurs in which the drawn object is erased later by the eraser.

As described above, in the drawing system according to the fourth embodiment of the present invention, since the drawing area of each client is physically different, drawing by a plurality of people is possible, and writing and writing habits can be eliminated at the same time. Become.
Further, on the entire drawing information display screen and drawing input screen projected by the server 30, the position of the drawing input screen opened by another client, that is, a frame indicating the drawing area, the position of the other person's pen or mouse, That is, mouse cursor information may be displayed.

In addition to drawing information, it is possible to instruct what is drawn by sending the position of the pen and to convey it to others. Furthermore, drawing information that has been sent between clients so far can be stored in the server 30, and when the user joins in the middle, such information can be sent to make it possible to join in the middle.
In this example, the server 30 is provided. However, the server 30 may be provided only with the client, and each client may send drawing information.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described.
The drawing system in this embodiment identifies and determines whether the input operation is an operation on the drawing screen or an operation on the entire drawing information display screen according to the contents of the drawing information input by the input device 4. By performing a display process on the determined screen, it has a function of enabling an operation on the entire drawing information display screen such as selecting a drawing area by an input operation on the drawing input screen.

FIG. 17 is a diagram illustrating a configuration example of a drawing system according to the fifth embodiment of the present invention.
In this embodiment, as shown in FIG. 17, the drawing input screen is superimposed on the entire drawing information display screen, and the drawing input screen is displayed in a translucent manner so that the user can see the entire drawing information display screen behind.
FIG. 18 is a block diagram illustrating a configuration example of a drawing processing apparatus of the drawing system according to the fifth embodiment of the present invention.
As shown in FIG. 18, the drawing processing apparatus 1 of the drawing system according to the fifth embodiment of the present invention further includes an input identifying unit 41 as compared with the configuration shown in FIG.

The input identification unit 41 determines whether the input operation is an operation on the drawing input screen or an operation on the entire drawing information display screen according to the state of the input operation on the drawing input screen by the input device 4. To do.
This is because the input operation on the drawing input screen is based on, for example, an input with a pen or a mouse for drawing. This means that not only drawing on the drawing input screen but also a function that enables operation on the entire drawing information display screen for selecting a drawing area to be displayed on the drawing input screen.

FIG. 19 is a flowchart illustrating an example of a processing operation performed by the drawing system according to the fifth embodiment of the present invention.
When a window of a drawing input screen is opened on the input screen 3 by an operation on the input screen 3 by the input device 4 (step S31), the display control unit 15 draws on the two-dimensional coordinate plane in the virtual drawing space. Set the cutout area as a window on the input screen.

  Based on the two-dimensional coordinates on the virtual drawing space, which are the coordinate values of the existing drawing information stored in the drawing information storage unit 17, the display control unit 15 stores the existing information in the cutout area on the drawing input screen 3. If there is drawing information (YES in step S32), similar to the processing in step S3 described in the first embodiment, the input drawing information configured with two-dimensional coordinate values in the virtual drawing space. The coordinate values (Point_base.x, Point_base.y) are converted into coordinate values on the drawing input screen, and existing drawing information is displayed on the drawing input screen 3 of the drawing display device 2 according to the converted coordinate values ( Step S33).

  Specifically, as described in the first embodiment, the display control unit 15 described above with respect to the drawing information that is the two-dimensional coordinates on the virtual drawing space stored in the drawing information storage unit 17 described above. If coordinate values (Point_base.x, Point_base.y) satisfying the expressions (1) and (2) exist, the coordinate values on the drawing input screen 3 are converted according to the expressions (3) and (4) described above. It is converted into a value and drawn on the drawing input screen 3.

  When the pen as the input device 4 is lowered by handwriting input by the input device 4 and a new drawing is performed on the drawing input screen 3, that is, when new drawing information is input from the drawing input screen 3 ( In step S34, the input identifying unit 41 determines whether the input operation by the input device 4 is an operation on the drawing input screen or an operation on the entire drawing information display screen according to the state of the input operation on the drawing input screen. It is discriminated whether it is present (step S35).

When the input identifying unit 41 identifies and determines that the input operation by the input device 4 is an operation on the drawing input screen (YES in step S36), the display control unit 15 displays the input drawing information on the window on the drawing input screen 3. And is stored in the drawing information storage unit 17.
Specifically, as described in the first embodiment, the drawing information according to the drawing coordinate value input on the drawing input screen 3 with the origin at the upper left of the window on the drawing input screen 3 is drawn. In addition to being displayed on the screen 3, information obtained by converting the drawing coordinate value into a two-dimensional coordinate value on the virtual drawing space is stored in the drawing information storage unit 17.

  As a result, the full screen information display processing unit 21 calculates the coordinate value of the drawing information to be drawn on the full drawing information display screen from the magnification of the size of the full drawing information display screen with respect to the virtual drawing space, and follows this coordinate value. The drawn drawing information is displayed on the entire drawing information display screen. That is, drawing is added to the entire drawing information display screen (step S37).

  On the other hand, when the input identifying unit 41 identifies and determines that the input operation by the input device 4 is an operation for the entire drawing information display screen (NO in step S36), the full screen information display processing unit 21 performs the operation for the entire drawing information display screen. Processing is executed (step S38). This processing for the entire drawing information display screen is, for example, displaying an area corresponding to the instruction for selecting the area in the entire drawing information display screen to be displayed on the drawing input screen for the entire drawing information display screen on the drawing input screen. Is mentioned.

  After the process of step S37 or step S38, if the drawing is not finished (NO in step S39), the process returns to the process of step S34. If the drawing is finished (YES in step S39), the processing operation is finished. .

  The state of the input operation on the drawing input screen, which serves as a criterion for identifying and determining whether the input operation is an operation on the drawing input screen or an operation on the entire drawing information display screen, includes the mouse used for the input operation, Examples include pen input speed, stagnation time, writing pressure, and click interval.

  Hereinafter, a specific example of the identification determination method by the input identification unit 41 will be described. The premise of this identification judgment method is that the input operation by the user is basically a drawing operation, so the operation on the drawing input screen can be judged quickly. A determination method that requires a relatively long time for the operation on the information display screen can be considered.

  For example, as an identification judgment method, when the input speed value of the pen or mouse is equal to or less than a preset value, or after placing the cursor of the pen or mouse at a certain position on the drawing input screen, the input coordinates are set for a while. When the length of the stagnation time that is not changed is equal to or greater than a preset value, a method of identifying and determining as an operation on the entire drawing information display screen can be cited.

  Alternatively, the operation on the entire drawing information display screen may be identified and determined as an operation on the entire drawing information display screen when the writing pressure of the input operation is greater than or equal to a preset value, assuming that the operation on the entire drawing information display screen is performed. .

  In addition, since clicking with the mouse is basically not required during drawing, clicking to the extent that the click interval of the input operation with the mouse is different from placing a pen or mouse on the drawing input screen for drawing is understood. There is also a method of identifying and determining as an operation on the entire drawing information display screen when the interval is set.

  There is also a method of identifying and determining as an operation on the entire drawing information display screen when the value of the click interval with the mouse is a value corresponding to a fast double click that is equal to or less than a preset value. There is also a simple method for discriminating and identifying an operation on the entire drawing information display screen when the input operation is a right click with the mouse.

  Note that the user does not input a drawing line at the same time and inputs for the operation on the entire drawing information display screen. Therefore, if it is determined that the drawing line is being input, this line is input. The process of identifying and determining whether the input operation is an operation on the drawing input screen or an operation on the entire drawing information display screen until the end of the line, that is, until the pen-up indicating the end of the line or the mouse clip-up occurs. Not executed.

  The reverse is also true, and a series of input operations determined as operations on the entire drawing information display screen, that is, operations from pen-down to up, or mouse clip-down to up, are handled by this pen-up and mouse clip-up. Until this occurs, the process of identifying and determining whether the input operation is an operation on the drawing input screen or an operation on the entire drawing information display screen is not executed.

FIG. 20 is a diagram showing an example of a display form in which a drawing input screen displayed by the drawing system according to the fifth embodiment of the present invention and an entire drawing information display screen are overlaid.
Further, as shown in FIG. 20, there is a method in which a dotted line frame 42 indicating a region cut out from the entire drawing information display screen to the drawing input screen, which is a frame displayed on the entire drawing information display screen, is used for the above-described identification determination. is there.

  Although this dotted line frame 42 is displayed on the entire drawing information display screen, since the user can see from the semi-transparent drawing input screen, the dotted line frame 42 shown on the drawing input screen or an area near the dotted line frame 42 By performing an input operation with the input device 4 such as a pen or a mouse, the input identifying unit 41 is a drawing operation according to, for example, the input speed, the stagnation time, or the click operation of the pen or mouse described above. It is discriminated whether the operation is for the entire drawing information display screen.

  Furthermore, information indicating strokes for operations on the entire drawing information display screen is stored in the storage device 12 in advance, and the input identifying unit 41 includes information indicating the strokes of the input operations each time an input operation is performed. As described above, there is also a method of identifying and determining whether the input operation is a drawing operation or an operation on the entire drawing information display screen by collating with the stored information indicating the stroke.

  As described above, in the drawing system according to the fifth embodiment of the present invention, both the drawing operation on the drawing input screen and the operation on the entire drawing information display screen, for example, the drawing area selection operation can be executed seamlessly. This makes it easy to view the writings of others in different locations while drawing, and to repeat writing to multiple distant areas while drawing, so you can write or view in various locations. While hindering thoughts and discussions, the effect is reduced.

  The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Drawing processing apparatus, 2 ... Drawing display apparatus, 3 ... Drawing input screen, 4 ... Input device, 11 ... Control part, 12 ... Memory | storage device, 13 ... Scroll direction calculation part, 14 ... Automatic scroll processing part, 15 ... Display Control unit, 16 ... bus, 17 ... drawing information storage unit, 21 ... full screen information display processing unit, 22 ... reduction display processing unit, 30 ... server, 31 ... projection device, 32 ... screen, 41 ... input identification unit.

Claims (12)

An input means for receiving drawing information input operations;
Drawing information storage means for storing the drawing information input by the input means together with information of a drawing target area in the drawing screen of the drawing information;
Display means having a drawing screen for drawing the drawing information input by the input means and the drawing information stored in the drawing information storage means;
Display control means for displaying the drawing information input by the input means and the drawing information stored in the drawing information storage means on the drawing screen based on the drawing target area information of the drawing information in the drawing screen;
Calculating means for calculating parameters of an automatic scroll function of drawing information displayed on the drawing screen according to the contents of the drawing information input by the input means;
The drawing information area on the drawing screen of the drawing information stored in the drawing information storage means is changed according to the parameter calculated by the calculating means, and the drawing information is changed according to the changed drawing object area. And a drawing information scrolling means for scrolling the drawing information on the drawing screen by redrawing. All drawing information display means having an all drawing information display screen for displaying all the drawing information inputted and all the drawing information stored in the drawing information storage means;
The drawing apparatus according to claim 1, wherein the drawing screen included in the display unit is a screen obtained by enlarging a part of the entire drawing information display screen. An input means for accepting an input operation;
When drawing information is input by the input means, the drawing information storing means for storing the drawing information together with information of a drawing target area on the drawing screen of the drawing information;
Display means having a drawing screen for drawing the drawing information input by the input means and the drawing information stored in the drawing information storage means;
All drawing information display means having an all drawing information display screen for displaying all the drawing information inputted and all the drawing information stored in the drawing information storage means;
An input for identifying and determining whether the input operation is an operation for inputting drawing information on the drawing screen or an input operation on the entire drawing information display screen according to the content of the input operation by the input means An identification means;
When the input identifying means determines that the input operation is an operation for inputting drawing information to the drawing screen, the drawing information stored in the drawing information storage means is input to the drawing information If the input identifying means determines that the input operation is an input operation to the entire drawing information display screen based on the information of the drawing target area on the drawing screen, the entire drawing A drawing apparatus comprising: display control means for performing a predetermined display on the drawing screen based on the input operation content on the information display screen. When the range of the drawing information displayed on the drawing screen of the display unit by the input of new drawing information by the input unit exceeds the predetermined range of the entire drawing information display screen of the all drawing information display unit The reduction ratio of the drawing information displayed on the all drawing information display screen so that all of the newly inputted drawing information and the drawing information stored in the drawing information storage means are displayed on the all drawing information display screen. A calculation means for calculating
4. The drawing apparatus according to claim 2, further comprising reduced display processing means for reducing drawing information displayed on the entire drawing information display screen in accordance with the calculated magnification. A transmission / reception unit that transmits / receives drawing information to / from another drawing apparatus according to claim 1, further comprising:
The drawing apparatus, wherein the drawing information storage unit stores drawing information received from another drawing apparatus by the transmission / reception unit together with information on a drawing target area on the drawing screen of the drawing information. An input unit that accepts an input operation; a drawing information storage unit that stores the input drawing information together with information of a drawing target area on a drawing screen of the drawing information when the drawing information is input by the input unit; and the input unit A drawing method used for a drawing apparatus comprising: input drawing information and display means having a drawing screen for drawing drawing information stored in the drawing information storage means;
The drawing device includes:
The drawing information input by the input unit and the drawing information stored in the drawing information storage unit are displayed on the drawing screen based on the drawing target area information on the drawing screen of the drawing information,
In accordance with the content of the drawing information input by the input means, calculate parameters of the automatic scroll function of the drawing information displayed on the drawing screen,
The drawing information area on the drawing screen of the drawing information stored in the drawing information storage means is changed according to the calculated parameter, and the drawing information is redrawn on the drawing screen according to the changed drawing object area. To draw the drawing information on the drawing screen. The drawing device includes:
All drawing information display means having an all drawing information display screen for displaying all the drawing information inputted and all the drawing information stored in the drawing information storage means;
The drawing method according to claim 6, wherein the drawing screen of the display means is a screen obtained by enlarging a part of the entire drawing information display screen. An input unit that accepts an input operation; a drawing information storage unit that stores the input drawing information together with information of a drawing target area on a drawing screen of the drawing information when the drawing information is input by the input unit; and the input unit A drawing method used for a drawing apparatus comprising: input drawing information and display means having a drawing screen for drawing drawing information stored in the drawing information storage means;
The drawing device includes:
All drawing information display means having an all drawing information display screen for displaying all the drawing information inputted and all the drawing information stored in the drawing information storage means;
According to the content of the input operation by the input means, it is identified and determined whether the input operation is an operation for inputting drawing information on the drawing screen or an input operation on the entire drawing information display screen,
When it is determined that the input operation is an operation for inputting drawing information to the drawing screen, the input drawing information and the drawing information stored in the drawing information storage unit are displayed on the drawing screen of the drawing information. When the drawing operation is displayed on the drawing screen based on the information of the drawing target area and the input operation is identified and determined as an input operation on the entire drawing information display screen, the input operation content on the entire drawing information display screen is determined. A drawing method comprising performing a predetermined display on the drawing screen. The drawing device includes:
When the range of the drawing information displayed on the drawing screen of the display unit by the input of new drawing information by the input unit exceeds the predetermined range of the entire drawing information display screen of the all drawing information display unit The reduction ratio of the drawing information displayed on the all drawing information display screen so that all of the newly inputted drawing information and the drawing information stored in the drawing information storage means are displayed on the all drawing information display screen. Calculate
9. The drawing method according to claim 7, wherein the drawing information displayed on the all drawing information display screen is reduced according to the calculated magnification. The drawing device includes:
The drawing information is transmitted to and received from another drawing apparatus according to any one of claims 6 to 9,
The drawing information storage means stores the drawing information received from the other drawing device together with information on a drawing target area on the drawing screen of the drawing information.   A program for causing a computer to execute the drawing method according to any one of claims 6 to 10.   The computer-readable recording medium which recorded the program of Claim 11.

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