KR20140000436A - Electronic board system using infrared camera - Google Patents

Abstract

The present invention relates to an electronic board system using an infrared camera. The electronic board system using an infrared camera comprises: an electronic pen outputting infrared lights for writing; an infrared camera photographing a lecture including written content on the electronic board by infrared lights outputted from the electronic pen; a main PC executing an event created by the electronic pen, outputting the same, and receiving the lecture video photographed by the infrared camera; and a beam projector projecting a screen outputted from the main PC. By using the electronic board system using an infrared camera, it does not require an expensive touch screen board such as a PDP or an LCD since it uses only an infrared camera and an electronic pen. Also, it can be operated on anything such as a regular screen, a blackboard, and walls at low costs.

Description

Electronic board system using infrared camera

The present invention relates to an electronic blackboard system using an infrared camera, and more particularly, using an infrared camera and an electronic pen does not require an expensive touch screen board such as an LCD or a PDP, and is inexpensive in any environment such as a general screen, a blackboard, a wall, and the like. It is to provide an electronic blackboard system using an infrared camera that can be implemented at a price.

In the past, various tools have been used to enhance the usefulness of lectures. Writing and drawing lessons were more efficient than words-only lectures, and because they were easy to understand, chalkboards were written and used for decades.

As science and technology developed, the lessons that were only written in chalk on the blackboard are being transformed into smart classes with various electronic devices. Classes equipped with electronic equipment can easily produce materials such as images and videos necessary for the class, and students can easily find necessary materials through web surfing during the class, making it easier for students to understand. In addition, by recording a class with a video camera, students can watch the class again at any time, and even if they do not participate in the class, they can watch the recorded class videos. I can take the course.

Among other learning materials, the electronic blackboard is a blackboard that can be used as an electronic pen to increase the convenience and usefulness of the lecture. Currently available commercial copyboards are largely LCD or PDP type using TV panels. LCD or PDP type has the advantage of being able to write directly on the screen, the screen is clear, and regardless of the lighting. However, the conventional electronic blackboard as described above has a concern that the eyes become tired due to dazzling bright screen, and the eyesight decreases, and it is difficult to introduce the electronic blackboard due to the high unit cost and the limitation of the installation place.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to use an infrared camera and an electronic pen, which does not require an expensive touch screen board such as an LCD or a PDP, and is inexpensive in any environment such as a general screen, a blackboard, a wall, and the like. It is to provide an electronic blackboard system that can be implemented at a price.

In addition, since the projection of the image through the beam projector, less glare compared to LCD or PDP to provide an electronic blackboard system using an infrared camera that less eyes tired, less fear of vision loss.

In order to solve the above problems, an electronic blackboard system using an infrared camera according to the present invention comprises: an electronic pen for transmitting infrared rays for writing; An infrared camera for capturing an image of a lecture including writing content by infrared rays transmitted from the electronic pen; A main PC that receives a lecture image captured by the infrared camera and executes and outputs an event generated by the electronic pen; And a beam projector for projecting a screen output from the main PC.

The main PC may include a screen adjusting unit for adjusting a coordinate of an image portion projected by the beam projector among the lecture images taken by the infrared camera and a coordinate of the screen displayed on the main PC to be matched one-to-one.

In addition, the main PC is a writing tool providing unit for providing a tool for writing; A receiver configured to receive an image captured by the infrared camera; A storage unit for storing the lecture image received by the receiving unit; An event detector configured to detect an event generated when an event occurs by the electronic pen; An event execution unit executing the detected event in the event detection unit; And a transmitter configured to transmit the lecture image in which the event executed in the event executing unit is displayed, to the beam projector as it is.

The main PC may further include a coordinate recognition unit recognizing the coordinates of the screen on which the event occurred when the event detection unit detects an event of the electronic pen.

In addition, the electronic pen is a button and the wheel is mounted, characterized in that the function of the mouse is implemented.

As described above, according to the present invention, there is no need for an expensive touch screen board such as an LCD or a PDP using only an infrared camera and an electronic pen, and an electronic blackboard system that can be implemented at a low price in any environment such as a general screen, a blackboard, a wall, and the like. There is an advantage to this.

In addition, since the projection of the image through the beam projector, there is an advantage that can provide an electronic blackboard system using an infrared camera that is less glare than the LCD or PDP, less eye fatigue, less fear of vision loss.

1 is a perspective view showing the configuration of an electronic blackboard system using an infrared camera according to a preferred embodiment of the present invention;
2 is a configuration diagram of a main PC according to a preferred embodiment of the present invention;
3 is a flow chart utilizing the electronic blackboard system according to a preferred embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings. Like reference symbols in the drawings denote like elements.

1 is a perspective view showing the configuration of an electronic blackboard system using an infrared camera according to a preferred embodiment of the present invention, Figure 2 is a block diagram of a main PC according to a preferred embodiment of the present invention, Figure 3 is a preferred embodiment of the present invention An electronic blackboard utilization flowchart according to an embodiment.

1 to 3, an electronic blackboard system using an infrared camera according to an exemplary embodiment of the present invention includes an electronic pen 100, an infrared camera 200, a main PC 300, a beam projector 400, and a display unit. 500 is included.

The electronic pen 100 proceeds with writing the lecture data displayed on the display unit 500, and the instructor underlines the lecture data through the electronic pen 100 to help the learner understand or to the important matters. In the present invention, the electronic pen 100 is characterized by expressing characters, figures, symbols, etc. in infrared rays which can be identified by the infrared camera 200.

Meanwhile, the electronic pen 100 matches the area of the image projected by the beam projector 400 among the image capturing areas of the infrared camera 200 with the area of the image displayed on the monitor of the main PC 300. As a general rule, the infrared camera 200 captures an area wider than a range of the projection area of the beam projector 400. Among the areas of the captured image of the infrared camera 200 through the electronic pen 100, the beam projector ( The area range of the projected image is determined at 400, so that the determined area of the image and the area of the image appearing on the monitor of the main PC 300 are exactly matched one-to-one.

In addition, the electronic pen 100 is preferably provided with a button and a wheel so as to implement the function of the mouse according to the user operation.

The infrared camera 200 captures an image of a lecture including writing contents by the electronic pen 100, and identifies the infrared rays transmitted from the electronic pen 100 so that the participants can check the writing contents with their eyes. . The infrared camera 200 is installed around the beam projector 400 to take a picture of the display unit 500 where lectures are performed. When the writing by the electronic pen 100 is made on the display unit 500, the electronic pen It detects the infrared rays transmitted from the 100 and transmits the lecture image including the written content to the main PC (300).

The main PC 300 expresses an event (characters, figures, symbols, etc.) generated by the lecture image and the electronic pen 100 taken from the infrared camera 200, or implements a mouse function. Display panel 500 through the beam projector 400, the writing tool providing unit 310, the receiving unit 320, the storage unit 330, the event detection unit 340, the event execution unit ( 350, a transmitter 360, a screen adjuster 370, a coordinate recognizer 380, and a controller 390.

The writing tool providing unit 310 provides a tool necessary for writing, and has a function of adjusting the thickness of the text, changing the font, selecting a color of the text, underlining or shading the text, and deleting the text. For example, if the electronic pen 100 executes the writing tool and selects an icon for adjusting the color of the text and the thickness of the text, and then proceeds with writing the desired content and executes the writing tool again, the eraser icon is executed. By selecting and touching the writing that you want to erase the writing contents directly with the electronic pen 100, the touched writing portion is erased. The writing tool providing unit 310 may execute at the same time even when any program is executed, and provides the writing tool so that the writing can be freely written.

The receiver 320 receives an image of a lecture photographed by the infrared camera 200, and the image of the lecture includes a writing content.

The storage unit 330 stores the lecture video received by the receiving unit 320, the stored lecture video is uploaded to the Internet website, the students take freely, the instructor collectively stored the lecturer by email or MMS Send it. In addition, the lecture material is easily created based on the stored video, and the educational content is easily produced using the stored video.

The event detector 340 detects an event generated by the electronic pen 100, and when an event is generated by the electronic pen 100 on the display 500, the infrared camera 200 generates an event. Take a lecture image and transmit it to the main PC (300). At this time, the event detection unit 340 of the main PC (300) checks the presence of the infrared signal to the electronic pen 100 to the recorded lecture image It will detect whether an event occurs.

The coordinate recognition unit 350 recognizes the coordinates of the event occurring by the electronic pen 100 in the main PC 300, and when the event detection unit 340 detects an event of the electronic pen 100, the controller ( By 390, the coordinate recognition unit 350 recognizes the coordinates of the point where the event occurred. When the coordinate recognition unit 350 recognizes the coordinate at which the event occurred by the electronic pen 100, the image previously projected by the beam projector 400 and the screen image of the main PC 300 are completed in one-to-one matching. Since there is a situation, when an event generated by the electronic pen 100 occurs at a specific coordinate of the display unit 500, an event occurs at the same coordinate on the screen of the main PC 300. For example, when the electronic pen 100 attempts to execute the Internet, if the electronic pen 100 points to the explorer icon of the display unit 500, the coordinate pen 350 of the main PC 300 accurately displays the electronic pen 100. The cursor is located at the position, and when the user double-clicks the electronic pen 100 at the position, the explorer is operated.

The event executing unit 360 executes the event detected by the event detecting unit 340, and the event is executed according to the content of the event detected by the event detecting unit 340. For example, if the instructor presses a button that functions as a left-click of a mouse among the buttons attached to the electronic pen, the left-click event occurs where the electronic pen of the display unit 500 is located, as if the instructor left-clicked with the mouse. When the instructor proceeds to write a circle, the circle appears on the display unit 500.

The transmitter 370 transmits the lecture image including the writing to the beam projector 400, and transmits the lecture image including the writing to the beam projector 400 to project the lecture image from the beam projector 400 to the display unit 500. do.

The screen adjuster 380 uses the electronic pen 100 to adjust the coordinates of the image projected by the beam projector 400 and the coordinates of the screen image of the main PC 300 among the images acquired by the infrared camera 200. As the matching is performed, the edges of the area projected by the beam projector 400 among the captured images of the infrared camera 200 are respectively displayed by the electronic pen 100, and the four edges (upper left / right / lower left / right). Right area) or nine points (left, middle, top, left, middle, middle, right, left, bottom, middle and bottom), and the area range projected by the beam projector 400 in the image captured by the infrared camera 200 Set the coordinates of. The set coordinates are transmitted to the main PC 300 to make one-to-one matching with the screen coordinates of the main PC 300, and the image of the area projected by the beam projector 400 of the image acquired by the infrared camera 200 is obtained. If the coordinates and the screen of the main PC is a one-to-one matching, since the location of all events generated by the electronic pen 100 in the display unit 500 exactly matches the screen of the main PC 300, the main PC ( The software installed in the 300 may be used as if the computer is freely used by the electronic pen 100 in the display unit 500, and the contents written on the display unit 500 are exactly the same positions on the screen of the main PC 300. It is located at.

The beam projector 400 projects the lecture image onto the display unit 500, and is connected to the main PC 300 to receive the image output from the main PC 300 and project the image to the display unit 500 as it is. It is configured to be.

The display unit 500 is an image projected by the beam projector 400 is displayed as it is, in order to implement the electronic blackboard, the electronic pen 100, infrared camera 200 is easy to install and easy to move. By configuring the main PC 300 and the beam projector 400, the display unit 500 can be configured using a blackboard, a wall, a white board, or the like. In addition, the display unit 500 displays the result when the writing event by the electronic pen 100 is visible, and when the event of the mouse function occurs, the program is executed and the execution result is visible. Display.

Hereinafter, referring to FIG. 3, a method of utilizing an electronic blackboard system using an infrared camera according to an exemplary embodiment of the present invention will be described.

3 is an electronic blackboard system utilization flowchart using an infrared camera. Referring to FIG. 3, in the method of utilizing the electronic blackboard system using the infrared camera of the present invention, the lecture data are output to the display unit 500 through the beam projector 200 (S100). It can be an explorer screen, it can be any document or desktop.

When the lecture data is displayed on the display unit 500 as described above, the displayed lecture data is taken by the infrared camera 200 (S200), since the infrared camera 200 captures a wider area than the output lecture data. In order to make the position of the event or writing generated by the electronic pen 100 on the display unit 500 the same as the position of the event or writing occurring on the screen of the main PC 300, the infrared camera 200 captures The coordinates of the image portion projected by the beam projector 400 among the lecture images match the coordinates of the screen displayed on the main PC 300 (S300). In this case, matching of the screen coordinates of the main PC 300 with the coordinates of the image projected by the beam projector 400 is performed by the electronic pen 100 and the beam projector 400 by the electronic pen 100. Infrared camera that directly points four (left / right / top / bottom / bottom) or nine (left / bottom / right / left, middle / middle / right, left / bottom / bottom) of the edge of the image projected by Set the coordinates of the projector projection area range directly in the image.

After one-to-one matching, the infrared camera 200 shoots a lecture image including the writing contents (S400), and the screen and the lecture image of the main PC 300 are in a one-to-one match, so the instructor When an event occurs at a specific point in the display unit 500, an event occurs at the same point on the screen of the main PC 300, so that accurate writing is possible.

Therefore, when the instructor generates an event with the electronic pen 100 on the display unit 500 (S500), the generated event is executed in the main PC 300 to output an image including the result (S600). The image is projected onto the display unit 500 by the beam projector 400 (S700).

Optimal embodiments have been disclosed in the drawings and specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: electronic pen 200: infrared camera
300: main PC 310: writing tool providing unit
320: receiving unit 330: storage unit
340: event detection unit 350: coordinate recognition unit
360: event execution unit 370: transmission unit
380: screen adjustment unit 390: control unit
400: beam projector 500: display unit

Claims (5)

An electronic pen that emits infrared rays for writing;
An infrared camera for capturing an image of a lecture including writing content by infrared rays transmitted from the electronic pen;
A main PC that receives a lecture image captured by the infrared camera and executes and outputs an event generated by the electronic pen;
An electronic blackboard system using an infrared camera comprising a; beam projector for projecting the screen output from the main PC.
The method according to claim 1,
The main PC includes a screen adjusting unit for adjusting the coordinates of the image portion projected by the beam projector of the lecture image taken by the infrared camera and the coordinates of the screen displayed on the main PC to match one-to-one; infrared camera comprising a Electronic blackboard system.
The method according to claim 1,
The main PC is a writing tool providing unit for providing a tool for writing;
A receiver configured to receive an image captured by the infrared camera;
A storage unit for storing the lecture image received by the receiving unit;
An event detector configured to detect an event generated when an event occurs by the electronic pen;
An event execution unit executing the detected event in the event detection unit;
An electronic blackboard system using an infrared camera comprising a; transmission unit for transmitting the lecture image displayed in the event execution unit to the beam projector as it is.
The method according to claim 3,
The main PC is an electronic blackboard system using an infrared camera further comprising; a coordinate recognition unit for recognizing the coordinates of the screen on which the event occurred, when the event detection unit detects the event of the electronic pen.
The method according to claim 1,
The electronic pen is an electronic blackboard system using an infrared camera, characterized in that the button and the wheel is mounted to implement a mouse function.

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