JP2011084050A - Electronic writing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic writing system which enables real time writing display like a blackboard or a white board, prevent the response from worsening, and improve the usability of the electronic writing system, and also, enables use of a plurality of electronic pens and operation of the electronic pen in the same sense as a mouse operation in a personal computer, in a large-size screen display. <P>SOLUTION: This electronic writing system includes a pattern sheet with a position information pattern formed on the face, as described in the claim 1, a plurality of electronic pens which can perform a writing operation etc. on the face of the pattern sheet, a personal computer which receives writing position information from a plurality of electronic pens and a projector which can project a display image of the personal computer and an writing image of the electronic pen on the pattern sheet. When one of the plural electronic pens performs a writing operation, an exclusive control part excludes an interrupt writing by the other electronic pen. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention is, for example, a system that can be placed on a wall surface of a conference room or a board surface of a blackboard and can be written with an electronic pen, or can display the written information by a writing operation. The present invention relates to an electronic writing system that can use an electronic pen.

Conventionally, an interactive board using an electronic pen is known.
For example, by moving an electronic pen on the surface of a large liquid crystal display device, the movement trajectory of the electronic pen is calculated, and the calculation result is displayed on the display device.
Also, there is a known one that attaches a position detection device to an ordinary electronic blackboard device, calculates the position of the electronic pen traveling locus when writing on the electronic blackboard device, calculates the position based on the principle of triangulation, and records it as written data .

Japanese Patent Application Laid-Open No. 2009-53956 discloses a technique for extracting user information for a plurality of electronic pens and displaying them simultaneously in an electronic board system.
Japanese Patent Application Laid-Open No. 2009-20373 discloses a technique for simultaneously displaying on a screen writing information written on paper of each of a plurality of electronic pens in a learning system using a projector.

JP 2009-53956 A JP 2009-20373 A

In the above-mentioned Patent Document 1, a plurality of writing operations are allowed at the same time, which is excellent in convenience. However, when the writing operation is performed with a large number of electronic pens due to a heavy information processing load, the processing cannot keep up with the response. There will be a delay in the time, causing the problem of delay in displaying the written data. In particular, in a meeting or the like, in a state in which the discussion is incandescent and the amount of writing increases, the data cannot be processed, a writing detection error may occur, and it may not be displayed.
Also in the above-mentioned patent document 2, the data of each electronic pen is received by a personal computer, and the processing capability of this personal computer may not catch up and display delay may occur.

In a normal personal computer, only one mouse cursor is displayed, and information processing is performed when an event such as a down, drag, or up of each button of the mouse occurs.
When operating multiple electronic pens as a mouse under these conditions, if multiple electronic pens perform operations such as pen-down at different positions, mouse cursors will move accordingly and alternate. Event processing is performed at the same time, and the position of the mouse cursor moves alternately, resulting in an unintended display.

An object of the present invention is to construct a system free from detection errors and display delays even when writing using a plurality of electronic pens on a large-screen writing surface. Another object of the present invention is to enable operation with an electronic pen in the operation of a personal computer on a large screen with the same feeling as a mouse operation on a normal personal computer.

In order to solve the above-described problem, the present invention provides a pattern sheet having a position information pattern provided on a surface thereof, a plurality of electronic pens that perform a writing operation on the surface of the pattern sheet, and An electronic writing system comprising: a personal computer that receives writing position information from a plurality of electronic pens; a display image of the personal computer; and a projector that projects the writing images of the electronic pen onto the pattern sheet. When one of the electronic pens performs a writing operation, the electronic pen has an exclusive control unit that excludes interrupt writing of other electronic pens.

In addition, the electronic writing system includes a command sheet having a position information pattern on a surface thereof, as described in claim 2, and a predetermined position on the command sheet is clicked by the electronic pen. The electronic pen is in a right button click or left button double click mode of the pointing device.

An electronic writing system comprising: a pattern sheet having a position information pattern on a surface thereof; a plurality of electronic pens writing on the surface of the pattern sheet; and the plurality of electronic pens. An electronic writing system comprising a personal computer that receives writing position information from the projector, and a projector that projects a display image of the personal computer and writing information of the electronic pen onto the pattern sheet, and a double-click is performed by the electronic pen. The determination criteria for determining that the first click and the second click are double clicks are changed according to the projection size or the projection resolution of the projector.

According to the present invention, in a system that enables real-time writing display similar to a blackboard or whiteboard, a plurality of electronic pens can be used, and a response can be achieved by restricting simultaneous use during writing. To prevent deterioration of sex. Further, since the same operation as a mouse operation in a personal computer using an electronic pen can be performed on a large screen, the convenience of the electronic writing system is improved.

FIG. 1 is a front view showing a main configuration according to an embodiment of the present invention. FIG. 2 is a configuration diagram related to the electronic pen and the writing sheet according to the embodiment of the present invention. FIG. 3 is a configuration diagram according to the command sheet of the first embodiment of the present invention. FIG. 4 is a front view showing a main configuration according to the second embodiment of the present invention.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

Hereinafter, an embodiment in which the present invention is arranged and used on a school blackboard will be described.
FIG. 1 is a front view showing an embodiment of the present invention.
Reference numeral 1 denotes a blackboard on which the electronic writing system of this embodiment is arranged.
2 is a white pattern sheet made of a resin material having an adsorption structure such as a magnet layer on the back surface and an absolute position pattern printed on the front surface, and 3 is an electronic pen on which a specific absolute position pattern is printed and formed. A command sheet on which an icon for clicking is printed is formed, 4 is a first electronic pen for writing on the pattern sheet 2, 5 is a second electronic pen, 6 is a control signal and writing data from the electronic pens 4 and 5. A receiving personal computer (hereinafter referred to as a personal computer) 7 is a projector connected to the personal computer 6 for projecting a display image of the personal computer.

The pattern sheet 2 and the command sheet 3 are made of, for example, a white PET (polyethylene terephthalate) substrate.
An adsorption layer 20 is provided on the back surface of the pattern sheet 2.
The adsorption layer 20 is made of a resin containing a magnetic material.

On the surface of the pattern sheet 2, for example, a position pattern as shown in Japanese Patent No. 3881365 is formed with infrared reflection type ink or infrared absorption ink.
Normally, such a print pattern is provided on the surface of paper. However, in a medium such as a blackboard where writing and erasing are repeated, the print pattern is quickly worn out and cannot be used.

Therefore, in the present invention, a fluorine-containing translucent protective sheet is provided on the surface of the pattern sheet 2.
For example, the product name AFLAX manufactured by Asahi Glass may be used.
In particular, the translucent sheet made of fluorine-containing rubber protects the above-mentioned print pattern, and can scatter reflected light and reduce glare when projecting an image on the pattern sheet 2 with a projector. At the same time, it has the effect of improving the writing erasing performance of the marker.

In the electronic writing system according to the apparatus of the present embodiment, continuous writing data is formed by the writing operation on the pattern sheet 2 by the electronic pens 4 and 5, and the writing image created from the writing data is the display surface of the personal computer 6. Are projected onto the pattern sheet 2 by the projector 7.
While the writing operation is performed with the first electronic pen 4, the interrupt writing operation with the second electronic pen 5 is prohibited. Even if the writing operation is performed with the electronic pen 5, the processing of the writing information is not performed. Projection display is not performed.
When the writing operation of the electronic pen 4 is finished, writing data by the writing operation of the electronic pen 5 is processed, and a writing image by the electronic pen 5 is projected and displayed.

In the above-described exclusive control, the electronic pen occupation mode is started by the start of reading by detecting the pen pressure above a predetermined level by a click (pen down) operation to the pattern sheet 2 of the electronic pen, and the predetermined level or less by the pen up operation of the electronic pen is started. This is done by releasing the occupation mode after a predetermined time has elapsed since the end of reading by the detection of writing pressure.

A pen number is assigned to each of the electronic pens 4 and 5.
By using this pen number, it is possible to assign a different color or line width to the writing of each electronic pen.
For this reason, for example, the electronic pen that is first used is set to black as an initial value, and the electronic pen 5 that is used second is set to blue as an initial value. Can be recognized from the display image.

Since the writing color and line width can be selected by clicking on the command sheet 3, when a predetermined color or line width is selected, the set value is recorded and held.
The set value for each electronic pen recorded and held is recorded and held until the writing software is terminated.
When the writing software is started again, black is set for the electronic pen that is first used, and blue is set for the electronic pen that is used second.

For chalk writing on a normal blackboard or writing on a whiteboard, who wrote where is not particularly important.
For this reason, the system of this embodiment can be set so that data management for each electronic pen is not performed.
However, a characteristic of writing with an electronic pen is that writing data can be easily processed.
For this reason, writing data by the electronic pen is managed as a writing object for each writing data from pen down to pen up, regardless of which pen is used. Thereby, enlargement / reduction, rotation, deformation, color change, and the like are possible for each written image.

In addition, it is possible to register colors as initial settings for each pen number in advance in each electronic pen and use each electronic pen as a dedicated pen for each color.
These settings can be arbitrarily changed by writing software.
The operation of the electronic pen includes a writing mode for writing and a mouse mode for performing a mouse operation, which can be switched by clicking the command sheet 3 with the electronic pen.

FIG. 2 is a conceptual diagram showing the configuration of the electronic pens 4 and 5.
The electronic pen 4 includes a removable stylus 40 having a resinous pen tip, an infrared imaging device 41, an infrared light emitting LED 42, an arithmetic device 43 that calculates a writing trajectory from a position information pattern detected by the imaging device 41, a memory 44, a wireless communication device 45, a battery 46, and a switch 47 constituted by a pressure sensor for turning on / off the position information reading operation.
The stylus 40 is detachably inserted into the stylus holding portion 48 of the main body of the electronic pen 5.

The electronic pen 4 is wirelessly connected to the personal computer 6 shown in FIG. 1, and the personal computer 6 is connected to the projector 7 with a cable.
When the electronic pen 4 is pen-down on the pattern sheet 2 and a pressure higher than a predetermined pressure is detected by the switch 47, a reading operation is started, and the position information pattern 30 formed on the pattern sheet 2 is read by the infrared imaging device 41. , It is wirelessly transmitted to the personal computer as continuous location information.
The writing trajectory information formed by the continuous position information is synthesized with a screen image of a personal computer and projected onto the pattern sheet 2 by a projector.
When the electronic pen 4 is pen-uped and a pressure below a predetermined level is detected by the switch 47, the reading operation is terminated.

The command sheet 3 according to the present embodiment will be described with reference to FIG.
31 is an icon for functioning a double click, 32 is an icon for functioning a right click, 33 is an icon for displaying the writing surface of the previous page, 34 is a next page, or newly displayed An icon for creating a writing surface and a calibration icon 35 for associating position information on the display screen of the personal computer with position information on the pattern sheet.
36 is an icon for causing the electronic pen to function as a mouse, 37 is an icon for writing in the pen mode, 38 is an icon for setting the electronic pen to the eraser mode for erasing the writing, and 39 is the line width of the writing. An icon 40 for setting represents an icon for setting a writing color. Although icons other than the above icons are also provided, description thereof is omitted.

An absolute position dot pattern is also formed on the command sheet 3. When position information of these areas is detected by clicking the electronic pen, the respective functions are executed on the personal computer.

When the electronic pen is used in the mouse mode, if the pattern sheet 2 is continuously pressed for a predetermined time or longer, an operation corresponding to a right click of the mouse is performed.
For example, when a written image is selected, if an action equivalent to a right mouse click is performed, a context menu for selecting a function such as cut copy or auto copy of the image is displayed, and no image is selected. In this case, when an operation corresponding to a right click of the mouse is performed, a menu for selecting a paste function is displayed.

As described above, in the writing mode with a plurality of electronic pens, exclusive control is performed so that only the electronic pen in use can write, but when the electronic pen is in the mouse mode, for example, an icon is clicked. In such an operation, the exclusive control is not performed even if there is an electronic pen in use, and the mouse operation can be performed by another electronic pen.

In addition, when the electronic pen is clicked twice within a predetermined range within a predetermined time, it is determined as a double click and a double click operation is performed.
If a double-click operation is performed during writing, the electronic pen is changed from the writing mode to the mouse mode.

The time between the first pen-down and the second pen-down for determining a double click is set to, for example, 750 milliseconds, similar to the mouse operation.
The predetermined range for determining the double click is automatically changed according to the projection size of the projection by the projector and the projection screen resolution.
The predetermined range increases in proportion to the increase in projection size and projection resolution.
This automatic change of the double-click criteria allows the user to perform a double-click operation with the electronic pen on a large screen, regardless of the screen size, in the same way as operating a mouse on a normal personal computer. Is possible.

FIG. 4 shows a second embodiment apparatus.
In this embodiment apparatus, an operation icon (operation mark) 9 is provided on the pattern sheet 2.
In this case, the function of the command sheet shown in the first embodiment is incorporated in the pattern sheet 2, and when the operation icon 9 is clicked with the electronic pen 4, the operation indicated by the icon is performed.
For example, when a printer icon is clicked, a projection image that is a display image of a personal computer with a handwritten image added and synthesized is printed by the printer 8.
Further, when a personal computer icon is clicked, a projected image, which is a display image of a personal computer to which a handwritten image is added and synthesized, is recorded in the personal computer 6.
When the image on the pattern sheet 2 is printed, the operation icon 9 is not printed.

As a security function, handwritten image (trajectory) data stored in the electronic pen and the memory in the personal computer may be erased when the power switch is turned off.
Further, the communication function may be operated only when the registered password is first written.

The present invention is not limited to the above-described embodiments. For example, an acceleration sensor may be provided in the electronic pen, and the peripheral device may be operated by, for example, an operation of shaking the electronic pen.
For example, when the electronic pen is shaken once, the writing surface data recorded one page before is projected from the projector, and when the electronic pen is shaken a plurality of times, the writing surface data recorded several pages before the shaking is projected to the projector. You may make it project from.

Further, the adsorption surface of the pattern sheet may be constituted by a suction cup or an adsorption layer that can be adsorbed without glue by providing a fine opening on the surface of the resin, and the color is not limited.
Furthermore, as a protective sheet for the pattern sheet, coating with an electron beam curable resin, so-called EB coating may be used.

The present invention makes it possible for a plurality of users to use a blackboard at a school, a meeting room of a company, a wall surface of a park, a desk, a table, etc. as a writing screen of a large screen, and to increase the response speed in a large screen display. Without dropping, multiple electronic pens can be used with the same feeling as a mouse on a personal computer.

2: Pattern sheet 3: Command sheet 4: Electronic pen 1
5: Electronic pen 2
6: PC 7: Projector

Claims (3)

A pattern sheet provided with a position information pattern on the surface; a plurality of electronic pens that perform writing operations on the surface of the pattern sheet; a personal computer that receives writing position information from the plurality of electronic pens; An electronic writing system comprising a projector that projects a display image and a writing image of the electronic pen onto the pattern sheet, and when one of the plurality of electronic pens performs a writing operation, An electronic writing system comprising an exclusive control unit that excludes interrupt writing. A command sheet having a position information pattern provided on the surface, and clicking on a predetermined position of the command sheet with the electronic pen allows the electronic pen to be clicked with the right button of the pointing device or with the left button double-click mode. The electronic writing system according to claim 1, wherein: A pattern sheet provided with a position information pattern on the surface; a plurality of electronic pens that perform writing operations on the surface of the pattern sheet; a personal computer that receives writing position information from the plurality of electronic pens; An electronic writing system comprising a projector that projects a display image and writing information of the electronic pen onto the pattern sheet, wherein a first click and a second click when double-clicking with the electronic pen An electronic writing system, wherein a determination criterion for determining that is a double click is changed according to a projection size or a projection resolution of the projector.

Images