JP2002268617A - Electronic blackboard application system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic blackboard application system in which lateral and longitudinal direction scrolling is conducted by button operations that are similar to the operations of a conventional electronic blackboard and a plotting of a large sized graph that is impossible on a conventional electronic blackboard is made possible. SOLUTION: The system is provided with a screen display memory 107 which stores a plotting screen that is larger than the display screen of a large sized display 101. A scrolling function in the lateral and the longitudinal directions is provided to display an arbitrary position of the plotting screen of the memory 107. The instructions for the function are provided by a longitudinal scroll button 102 and a lateral scroll button 103 that are located on the frame portion surrounding the display 101.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic blackboard application system, and more particularly to an electronic blackboard application system capable of displaying a drawing screen larger than a display screen of a display means.

[0002]

2. Description of the Related Art A so-called "electronic blackboard (a term used in the classification of products of the Business Machine Industry Association)" which can record and print a drawing drawn with a pen on a large screen is provided on a surface (screen) capable of drawing with a pen. ) For a plurality of pages. In such a conventional “electronic blackboard device”, when writing to one page is completed and the user wants to move to another page, the screen moves by pressing a button provided on the main body of the device. Page. At this time, the moving direction of the page can be roughly classified into two types. One is to scroll the screen in the vertical direction, and the other is to scroll in the horizontal direction.

[0003] In the "electronic blackboard", although there are differences in the scroll direction, scrolling in the vertical or horizontal direction is basically performed due to the physical restriction that a plurality of pages (screens) are connected in a strip shape. Only one was allowed. For this reason, a vertically scrollable system can write a vertically connected table over multiple pages, but a horizontally long table cannot be written, and a horizontally scrollable system can write a vertically long list. Could not be written. Because of the physical definition of the screen shape and its scrolling direction, users had to use these limitations after knowing these limitations. For example, there has been a problem that writing a diagram that is larger than the size of the screen being displayed in each of the vertical and horizontal directions must give up from the beginning.

On the other hand, there are many applications on personal computers that allow both vertical and horizontal scrolling (many applications such as document creation software and spreadsheet software). . This is one way to handle much more information than can be displayed on the screen at one time. In this case, scrolling is usually performed by operating a so-called scroll bar using a pointing device (such as a mouse) prepared as one of general user interfaces.

[0005] By the way, an "electronic blackboard application system (like an electronic blackboard, in which writing with a pen is possible, using a large display) controlled by a personal computer and having a drawing function with a pen device,
No application system that can save and print the image of a written page) "is yet configured to be able to freely perform vertical scrolling and horizontal scrolling. These are because the scroll method in the conventional "electronic blackboard" is directly employed. Regarding this, even in the “electronic blackboard application”, a scroll bar for vertical scrolling and a horizontal scrolling bar are displayed at the end of the screen (for example, at the right end and at the lower end) and operated by a pointing device. For example, it would be possible to make free scrolling and draw large figures.
This makes it possible to write tables and figures that do not fit on one screen and are larger than the width of the screen in each of the vertical and horizontal directions.

However, this is not enough for the user in practical use. This is because the “electronic blackboard application system” is supposed to be written using a pen device while the user is originally standing, and in many cases it is actually used as such. . Therefore, if a user interface of scrolling by using a mouse is adopted, 1) a plane for operating the mouse is required, and 2) two kinds of tools, a pen device and a mouse, must be changed. This causes a heavy load on the user.

In a conventional "electronic blackboard device", writing is performed with a pen, and the screen is scrolled (moving the screen) using buttons on the main body of the device. This is a natural user interface that is more familiar than operating a scroll bar on the screen and does not require a mouse, and has been widely accepted and used.
This method is also considered to be a natural user interface familiar to the user in the “electronic blackboard application system”. By adopting this in an “electronic blackboard application system” using a large display controlled by a personal computer and having a drawing function using a pen device, it was impossible with a conventional “electronic blackboard device” It is possible to provide an "electronic blackboard application system" that enables scrolling in the vertical and horizontal directions and has a user interface that is natural for the user when using the electronic blackboard.

In addition, as a conventional example, Japanese Patent Application Laid-Open No. 11-4
According to the invention of Japanese Patent No. 5143, a dial or a button for controlling scrolling up, down, left and right of a screen is provided on a side surface of the portable information terminal, and the dial or the button is operated by a finger on a holding side. , So that the screen can be scrolled. This is useful when you want to display a large image on a small screen personal digital assistant.
The purpose of this is to eliminate the complicated operation of the scroll bar on the screen using a pen or finger. The basic idea is similar to that of the present invention, but the application is not “electronic blackboard application” but the side of the main body. Rather, it does not include an idea suitable for the use of an “electronic blackboard” in which the buttons are arranged on the front to make the operation in a standing state easy. Further, a similar invention targeting the use of “electronic blackboard” has not been found so far.

[0009]

As described above, in the conventional "electronic blackboard application system", there is no system that enables scrolling up, down, left, and right of the screen. Nothing suitable was found. The present invention solves this problem by a relatively simple method, and can perform vertical and horizontal scrolling by button operation, and can be used with the convenience of a conventional "electronic blackboard device", and cannot be conventionally written. It is an object to realize an easy-to-use electronic blackboard application system capable of writing large diagrams.

[0010]

In order to achieve the above object, the present invention comprises control means comprising a computer, display means comprising a large display, and input means comprising a pen device. A function of inputting image data, a function of storing image data input by the input means, a function of printing image data input by the input means, and a function of printing image data input by the input means on the display means. In an electronic blackboard application system having a display function, a scroll screen which is movable in a vertical direction and a horizontal direction in order to display an arbitrary position in the drawing screen in which a drawing screen larger than the display screen of the display means is provided. A button provided in a portion corresponding to a frame around the display means, which has a function and instructs the scroll function. Characterized by comprising switch means. This allows you to use vertical and horizontal scrolling,
By using a pen device to create diagrams and tables larger than can be displayed on the screen, it is possible to realize an electronic blackboard application system that can perform scrolling operations in the same familiar manner as conventional electronic blackboards it can.

Further, in this electronic blackboard application system, a drawing screen larger than the display screen of the display means is provided, and a scale function for displaying the drawing screen at an arbitrary scale is provided. It is characterized by comprising button switch means provided in a portion corresponding to a frame around the display means for giving an instruction to a function. This allows you to use the pen device to create larger figures and tables than can be displayed on the screen using the scaling function, and perform scaling operations in the same familiar manner as conventional electronic blackboards. An executable electronic blackboard application system can be realized.

Further, in this electronic blackboard application system, a drawing screen larger than the display screen of the display means is inherent, and can be moved vertically and horizontally in order to display an arbitrary position in the drawing screen. A remote control device having a scroll function and having button switch means for giving an instruction to the scroll function is provided. This makes it possible to use a pen device to create diagrams and tables that are larger than can be displayed on the screen using vertical and horizontal scrolling, and to perform scrolling operations using a remote control device with good operability. A blackboard application system can be realized.

In the electronic blackboard application system, a drawing screen larger than the display screen of the display means is provided, and a scaling function for displaying the drawing screen at an arbitrary scale is provided. A remote control device provided with a button switch means for giving an instruction to a function is provided. This makes it possible to use the pen device to create diagrams and tables larger than can be displayed on the screen using the scaling function, and to perform scaling operations with a remote control device with good operability. An electronic blackboard application system can be realized.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an electronic blackboard application system according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of an electronic blackboard application system according to the present invention. This application system includes a large-sized display 101 provided with scroll buttons 102 and 103 for vertical and horizontal directions and a button 104 for instructing enlargement / reduction display, a pen device 105, and various kinds of processing. The central processing unit 106 is capable of executing processing routines 108 to 112 for performing the processing. The contents to be displayed are displayed on a display via a screen display memory 107. Each processing routine is connected to the central processing unit by a bus. The external storage device 113 and the printing device 114 are used for record keeping and printing of written contents, respectively.

A user stands in front of the large display 101 and uses the pen device 105 to write characters and figures on the display screen. Specifically, the pen device 105 sends the position and movement of the pen relative to the display as data to the central processing unit 106, and the data is processed by the drawing management routine 111 and the screen management routine 112. Thus, it becomes possible to determine where and how the tip of the pen device 105 has moved on the screen. Pen trajectory information obtained as a result is written into the display memory 107 via the central processing unit 106, and is written to the display 101.
Will be displayed above. Of these, the position coordinates of the pen relative to the display are obtained from moment to moment,
This can be easily realized by a known technique.

FIG. 2 is a schematic diagram showing the relationship between the screen display area 203 of the display 101, the display coordinate space 202, and the screen coordinate space 201 where data is actually held in the application system. Here, the finally drawn figures and the like are stored in the screen coordinate space 201 where data is actually stored. To reduce or enlarge the figure in the screen coordinate space 201 where data is actually stored, for example, when the user wants to see the whole figure or modify a small figure. Therefore, a display coordinate space 202 obtained by reducing / enlarging the screen coordinate space 201 in which data is actually held by linear transformation (changing the scale) is prepared. The user sees the drawing (or a part of the drawing depending on the scale) drawn on the display coordinate space as a so-called “window” through which the display coordinate space 202 can look through the screen display area 203 of the display. It is. FIG. 2 illustrates a part of a large view on the screen coordinate space 201 where data is actually held, which is reduced by a certain scale, and is partially displayed.

Here, the screen display area 20 of the display
The vertical scroll button 102 and the horizontal scroll button 103 installed on the front of the large display 101 operate which part of the display coordinate space 202 is displayed on the display 3. Press the vertical scroll button (up and down) to move the displayed area up and down, and press the horizontal scroll button (left and right) to display the area Are configured to move left and right. By utilizing this, the user can see what is drawn at an arbitrary place in the display coordinate space 202, and can write using the pen device 105.

The scale can be changed by the user operating the enlargement / reduction display button 104 provided on the front of the large display 101. Pressing one will enlarge the figure from the scale currently being viewed, and pressing one will reduce the figure from the current scale. This is realized by changing the coefficients of the linear transformation between the screen coordinate space 201 where the data is actually held and the display coordinate space 202. The screen management routine 112 manages the following information. A: Screen 201 holding actual drawing data, B: Linear transformation coefficient (scale) between screen coordinate space 201 actually holding data and display coordinate space 202 at that time, C: Display Position information between the target coordinate space 202 and the screen display area 203 of the display.

The drawing routine 111 has the following functions. Central processing unit 106 from pen device 105
The data transmitted via the data includes information on the relative position of the display with respect to the screen display area 203. Based on this, the drawing routine 111 refers to the information held by the screen management routine 112 and displays the screen managed by the screen management routine 112 on FIG.
The drawing is performed according to the following procedure. That is, step 10
When the routine starts at 0, information on the relative position with respect to the display screen is obtained at step 101, and conversion to position coordinates in the display coordinate space 202 is performed at step 102. Then, in step 103, conversion into position coordinates in the screen coordinate space 201 and drawing are performed,
The process ends at step 104.

The image display memory 107 has the following functions. The drawn information on the screen 201 is taken through the screen display memory 107 in the reverse order,
It will be displayed on the screen display area 203 of the display. The display processing of this portion is performed through a generally used graphic card or the like, and is not directly related to the gist of the present invention.

The button input processing routine 108 has the following functions. The button input processing routine 108 includes various buttons 102, 103, and 104 installed on the front of the large display (actually, the frame of the display).
Is pressed, determines what kind of button it is, how long it is, etc., and passes the result to the corresponding processing routine via the central processing unit 106. Have. Scroll button 10
When the user presses buttons 2 and 103, the information is passed to the scroll processing routine 109, and the enlargement / reduction display button 104 is pressed.
Is pressed, the information is displayed in the enlargement / reduction processing routine 11.
It is configured to be passed to 0. This part is easily realized by a known technique.

The scroll processing routine 109 has the following functions. The scroll processing routine 109 is a routine for receiving information on which of the four types of buttons have been continuously pressed and how long, and determining the corresponding scroll processing. Actually, the amount of change in the relative position between the display coordinate space 202 and the screen display area 203 of the display is calculated, and the calculated amount is passed to the screen management routine 112. Screen management routine 112 receiving it
Rewrites "A relative position information of the display coordinate space 202 and the screen display area 203 of the display" (A) held by the user.

The enlargement / reduction processing routine 110 has the following functions. The enlargement / reduction processing routine 110 receives information on whether the pressed button is an enlargement button or a reduction button, and information on the duration thereof, calculates a scale change rate, and passes it to the screen management routine 112. become. Screen management routine 112 receiving it
Will rewrite the "linear conversion coefficient (scale) between the screen coordinate space 201 at which the data is actually stored and the display coordinate space 202" (B) held by the user.

There is another configuration for the button arrangement. FIG. 4 shows that the buttons are not installed in front of the frame of the display, but are installed in a small remote controller, and information relating to button presses there is transmitted via a transmission unit to the central processing unit. FIG. 7 is a schematic diagram of a remote controller when the configuration is such that the information is sent to the remote controller. The remote controller is provided with vertical and horizontal scroll buttons and an enlargement / reduction display button, and can be realized by having another central processing unit which executes a button processing routine inside the device.

In this case, the operation is different from the operation method of the conventional "electronic blackboard" (moving the screen by the buttons on the main body), and the effect of this point is lost, but the user does not stand in front of the main body. Another effect is that even a person can instruct scrolling and scaling of the screen from a distance. This also solves one of the usability problems that were not taken into account when the conventional method of operating application software on a personal computer with a mouse was applied to an application used by multiple people using a large display as it was You can do it.

The vertical and horizontal scrolling can be performed in a so-called page unit. It becomes possible by preparing a scroll processing routine that interprets the scroll button as a button that means movement of one screen. There is no essential difference in the block diagram itself. In addition, it is also possible to select a constant magnification for the original screen size instead of the relative magnification for scaling. In this case, the buttons do not indicate the two directions of enlargement and reduction.
Buttons such as 2x, 5x, full view (so that the entire screen is displayed in the display area of the display) are prepared (similarly, reduction is 1/2, 1/3, etc.). The button input processing routine determines whether or not the button has been pressed, and the enlargement / reduction processing routine that receives the result via the central processing unit only needs to pass the value of the magnification to the screen management routine. There is no essential difference in the block diagram itself.

The operation of the present invention will be described below step by step. Just started this application first,
In the state where nothing has been written yet, the information managed by the screen management routine 112 is as follows. A: A blank screen in which nothing is written yet B: A linear transformation coefficient (scale) between the screen coordinate space 201 where data is actually held and the display coordinate space 202 at that time is as follows: By default, C: relative position information between the display coordinate space 202 and the screen display area 203 of the display is (0,
0). Based on this information, a blank display is displayed on the screen display area 203 of the currently displayed display at a scale of 1.

Here, the user operates the large display 10.
It is assumed that before step 1, drawing using the pen device 105 is performed while viewing the screen display area 203 of the currently displayed display. In this case, the pen device 10
5 is processed by the drawing routine shown in FIG. 3, and drawing is performed on the screen held by the screen management routine 112. The resulting screen is stored in the screen display memory 107 in the reverse order of FIG.
Through the screen display area 203 of the currently displayed display.

The user operates the scroll buttons 102, 1
When the user presses 03, the button processing routine 10
8, the scroll processing routine 109 calculates the amount of change in the relative position information between the display coordinate space 202 and the screen display area 203 of the display according to the type and duration of the button. (Eg, right by 5 in the X-axis direction) and pass the result to the screen management routine 112. The screen management routine 112 changes “the relative position information between the display coordinate space 202 and the screen display area 203 of the display” in response thereto. (For example, from (0, 0) to (5, 0).) The result is transmitted to the screen display area 203 of the currently displayed display via the screen display memory 107 in a procedure reverse to that of FIG. Will appear in a visible form.

When the user presses the zoom-in / zoom-out display button 104, this is the button input processing routine 108.
Is passed to the enlargement / reduction processing routine 110, and the enlargement / reduction processing routine 110 calculates the rate of change of the scale according to the type and duration of the button (for example, the current 2
Times, etc.) and the result is passed to the screen management routine 112.
Pass on. In response to this, the screen management routine 112 proceeds to “screen coordinate space 2 where data is actually held”.
01 and the coordinate space 202 for display (scale) ”(original 1 is multiplied by 2 to 2).
To, etc.). This result appears in the screen display area 203 of the currently displayed display via the screen display memory 107 in a procedure reverse to that of FIG.

In this manner, free scrolling, which is not limited to either vertical scrolling or horizontal scrolling, and drawing of a large figure or table that does not fit on the screen becomes possible. The drawn screen can be printed by the printing device 113 and saved by the external storage device 114.

[0033]

As described above, the invention of claim 1 of the present invention has a scroll function capable of scrolling vertically and horizontally, so that it is displayed on the screen using vertical scrolling and horizontal scrolling. Larger figures and tables can be created with the pen device than can be done. At this time, the scroll operation can be executed in a state of standing in front of the main body in the same familiar manner as the conventional electronic blackboard. Since a mouse is not used, a desk for that purpose is unnecessary.

Since the invention of claim 2 of the present invention has a function of enlarging and reducing, a figure or table larger than can be displayed on the screen is created by using the pen device. And see the results. that time,
The user can perform enlargement / reduction operations in a state where the user stands in front of the main body, using the familiar operation method of button operation on a conventional electronic blackboard.

According to the invention of claim 3 of the present invention, it is possible to create a diagram or table larger than can be displayed on a screen by using a pen device by utilizing vertical scrolling and horizontal scrolling. At that time, the scroll operation can be performed by operating the buttons of the remote controller. By utilizing this, there is also an effect that a person who is sitting at a remote place can perform a screen operation.

According to the invention of claim 4 of the present invention, it is possible to use the pen device to create a diagram or table larger than can be displayed on the screen by using the enlargement and reduction functions, and also to see the result. . At that time, the scaling operation can be executed by operating a button on the remote controller. By taking advantage of this, people sitting far away,
There is also an effect that a screen operation can be performed.

According to the invention of claim 5 of the present invention, the scroll operation can be controlled by a fixed amount, and the operability can be improved.

According to the invention of claim 6 of the present invention, the scaling operation can be controlled at a predetermined stage, and the operability can be improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of an electronic blackboard application system of the present invention.

FIG. 2 is a schematic diagram showing a relationship between a screen display area of a display, a coordinate space for display, and a screen coordinate space according to the present invention.

FIG. 3 is a flowchart of a management process of a screen management routine according to the present invention.

FIG. 4 is a diagram showing a button arrangement of a remote controller according to another embodiment of the present invention.

[Explanation of symbols]

 101 Large Display 102 Vertical Scroll Button 103 Horizontal Scroll Button 104 Enlarge / Reduce Display Button 105 Pen Device 106 Central Processing Unit 107 Screen Display Memory 108 Button Input Processing Routine 109 Scroll Processing Routine 110 Enlargement / Reduction Processing Routine 111 Drawing Management Routine 112 Screen management routine 113 External storage device 114 Printing device 201 Screen coordinate space 202 Coordinate space for display 203 Screen display area

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G06F 3/033 370 G06F 3/033 370 3/14 360 3/14 360D G09G 5/34 G09G 5/34 M H04N 1/00 H04N 1/00 HF term (reference) 2C071 CA02 CA04 DB02 DC01 5B069 BC03 CA02 CA08 CA09 DD11 DD17 JA09 KA02 5B087 AB04 AE02 DD12 DD17 DE06 DE09 5C062 AA07 AB18 AB20 AB22 AB23 AB42 AC05 AC24 BA00 5C08A A25 BB15 BB22 CA73 CA74 DA53 DA63 MM09 MM10

Claims (6)

[Claims] A control unit comprising a computer; a display unit comprising a large-sized display; and an input unit comprising a pen device. An input function of image data by the input unit, and an image input by the input unit. A data storage function, a printing function of the image data input by the input unit,
An electronic blackboard application system having a function of displaying image data input by the input means on the display means, wherein a drawing screen larger than the display screen of the display means is provided, and an arbitrary position in the drawing screen is provided. A scroll function that can be moved in the vertical and horizontal directions to display the image, and a button switch means provided in a portion corresponding to a frame around the display means for instructing the scroll function. And an electronic blackboard application system. 2. A control means comprising a computer, a display means comprising a large display, and an input means comprising a pen device, wherein an input function of image data by the input means and an image inputted by the input means are provided. A data storage function, a printing function of the image data input by the input unit,
An electronic blackboard application system having a function of displaying image data input by the input means on the display means, wherein a drawing screen larger than the display screen of the display means is provided, and the drawing screen is displayed at an arbitrary scale. An electronic blackboard application system having a scaling function for displaying, and a button switch means provided in a portion corresponding to a frame around the display means for giving an instruction to the scaling function. 3. A control unit comprising a computer, a display unit comprising a large display, and an input unit comprising a pen device, wherein an input function of image data by the input unit and an image inputted by the input unit are provided. A data storage function, a printing function of the image data input by the input unit,
An electronic blackboard application system having a function of displaying image data input by the input means on the display means, wherein a drawing screen larger than the display screen of the display means is provided, and an arbitrary position in the drawing screen is provided. An electronic blackboard application system, comprising: a remote control device having a scroll function capable of moving vertically and horizontally in order to display, and having a button switch means for instructing the scroll function. 4. A control unit comprising a computer, a display unit comprising a large display, and an input unit comprising a pen device, wherein an input function of image data by the input unit and an image inputted by the input unit are provided. A data storage function, a printing function of image data input by the input unit,
An electronic blackboard application system having a function of displaying image data input by the input means on the display means, wherein a drawing screen larger than the display screen of the display means is provided, and the drawing screen is displayed at an arbitrary scale. An electronic blackboard application system comprising: a remote control device having a scaling function for displaying and a button switch means for instructing the scaling function. 5. The electronic blackboard application system according to claim 1, wherein the scroll function performs scrolling in a predetermined fixed value unit. 6. The electronic whiteboard application system according to claim 2, wherein the enlargement / reduction function performs enlargement / reduction according to a predetermined absolute magnification.