KR100660137B1 - Input apparatus using a raser pointer and system for offering presentation using the apparatus - Google Patents

Abstract

An input device using a laser pointer and a presentation offering system using the same are provided to perform a mouse function of a computer offering a video source to a beam projector as well as a laser pointer function used in a presentation and enable a user to control the computer by capturing an image displayed to a screen from the beam projector and processing the captured image. The beam projector(200) outputs inputted video data to the screen(100). A camera(300) captures and outputs the image to the screen. The laser pointer(400) receives a manipulation command from the user, outputs the received command wirelessly, and emits laser. The user computer(500) performs the corresponding functions according to the manipulation command received from the input device by wirelessly connecting to the input device while providing the video data to the beam projector. The user computer detects the spot emitted by the laser pointer and focused in the screen from the video data output from the camera, and displays the mouse pointer by matching the detected spot with the mouse pointer.

Description

Input apparatus using a raser pointer and system for offering presentation using the apparatus}

1 is a schematic diagram schematically showing a presentation providing system according to an exemplary embodiment of the present invention.

2 is a block diagram schematically illustrating an input device according to an exemplary embodiment of the present invention.

3 is a block diagram schematically illustrating a user computer according to an exemplary embodiment of the present invention.

4A to 4C are schematic views schematically illustrating an image synchronization process of a presentation providing system according to the present invention.

5 is a schematic diagram schematically showing a drawing pattern recognition of a laser spot according to an embodiment of the present invention.

The present invention relates to a presentation providing system using an input device, and more particularly, a laser pointer function, as well as a spot irradiated from a laser pointer and formed on a screen, may be matched with a mouse pointer through image processing to perform an input function. The present invention relates to an input device using a laser pointer and a presentation providing system using the same.

Generally, beam projectors are used to convey information to a large number of people. A beam projector is an optical device that receives an image source from a device such as a computer and projects it on a screen through a lens and simultaneously shows it to multiple people.

For example, since the beam projector only serves as an output means for receiving an image source from a device such as a computer and outputting the image source, a laser pointer may be used to describe the image output by the speaker in more detail. The laser pointer is a device for pointing a portion of an image displayed on a screen by irradiating a laser.

Since such a beam projector only outputs a simple image source, in particular, an image source output from a computer controls an image output by using input means connected to the computer, that is, a keyboard or a mouse.

However, in this method, since the subject providing the image source to the beam projector is a computer, there is no problem when the lecturer can directly control the computer. However, when the lecturer is separated from the computer, the lecturer can There is a disadvantage in that the progress is not smooth because the computer must be controlled to move to the place where the computer is frequently located.

In addition, when the lecturer and the computer providing the image source are far apart and the lecturer cannot directly control the computer, there is a disadvantage that a person who assists the separate process must control the computer according to the lecturer's instruction.

The present invention has been made to solve the above problems and its object is to provide a laser pointer function used in a presentation as well as an input device using a laser pointer that can perform a mouse function of a computer providing an image source to a beam projector. It is to provide a presentation providing system using the same.

Furthermore, the present invention provides an input device using a laser pointer and a presentation providing system using the laser pointer capable of capturing an image displayed on a screen by a beam projector and processing the captured image to allow a user to control a computer providing an image source. have.

Furthermore, the present invention provides an input device using a laser pointer capable of performing a function corresponding to a recognized pattern by recognizing a trajectory of a laser spot irradiated from a laser pointer provided on the input device and a presentation providing system using the same. There is.

Furthermore, by providing a separate function key for inputting a command to perform a function selected by a user on the input device, to provide an input device using a laser pointer capable of performing a body effective input function and a presentation providing system using the same. have.

As described above, an input device using a laser pointer and a presentation providing system using the same according to an aspect of the present invention are output by a beam projector that receives image sources from a plurality of external devices and outputs them to a screen, and is output by a beam projector. Commands corresponding to a camera for capturing and outputting an image displayed on the screen, a laser pointer for irradiating a laser to indicate a portion of the image displayed on the screen, and a left / right button of a mouse used as an input device of a computer Is provided with an input unit including an input button for performing the input of the input device for wirelessly outputting the operation command input through the input unit, and wirelessly connected to the input device to drive the corresponding function according to the operation command transmitted from the input device Laser pointer from the image data output from the camera And a user computer for detecting the spot irradiated from the spot and matching the spot with the mouse pointer, calculating the movement amount according to the movement of the spot, and moving the mouse pointer.

When the user connects his computer, that is, the user computer and the beam projector, and commands the transmission of the image source to the beam projector, the user computer outputs the selected image source to the beam project, and the beam projector outputs to the screen.

When the image is displayed on the screen, the user may lecture or explain to a plurality of people while instructing a part of the image through the laser pointer provided in the input device. Meanwhile, when a user inputs a driving command of the input device using an input means of the user computer or a separate input key provided in the input device, the CPU of the user computer receives the corresponding command and executes the driving program of the input device. Let's do it.

According to the driving program of the input device, the camera captures an image displayed on the screen and outputs it to the user computer. The user computer receives the image of the screen shot and output from the camera, detects the laser spot formed on the screen by the laser pointer from the image, and matches the spot with the pointer of the mouse, which is an input means of the computer, through the beam projector. Display on the screen.

In addition, the user computer detects the movement of the spot in the image and moves the mouse pointer to correspond thereto. For example, when the camera captures an image displayed on the screen at 30 frames per second and outputs the image to the user's computer, the user's computer calculates the amount of movement of the spot by comparing the frames transmitted sequentially, and matches the mouse with the spot. Move the pointer of.

In addition, the input device according to the present invention is provided with an input button for performing an input function corresponding to the left and right buttons of the mouse which is one of the input means of the computer. The user's operation command input through the input button is all commands that can be input through a mouse, such as an icon execution command displayed on a Microsoft Windows desktop or a file registration information confirmation command.

When a user moves a spot to an executable file icon displayed on the desktop to execute a program, the user computer detects the movement of the spot and moves the mouse pointer to match it.

When the user double-clicks the mouse button on the executable file icon, that is, the input button that performs a function corresponding to the left button of the mouse, the input device wirelessly transmits the corresponding command to the user computer.

The user computer receives an execution command input through a position where the spot moves and an input button through image processing, executes the corresponding icon, and displays the image source on the screen through the beam projector.

Therefore, the input device of the presentation providing system according to the present invention can control the user computer using the laser spot formed on the screen through the laser pointer as well as the function of the laser pointer, so that the lecturer or the user provides the image source to the beam projector. Even if the user is far from the computer has the advantage that it can be conveniently controlled.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce the present invention.

1 is a schematic diagram schematically showing a presentation providing system according to an exemplary embodiment of the present invention. As shown, the presentation providing system according to the present invention receives the image source and outputs to the screen 100, the beam projector 200, and outputs by the beam projector to display the image displayed on the screen 100 The camera 300 includes an output device, an input device 400 including a laser pointer, and a user computer 500.

The beam projector 200 is a device that displays the image enlarged through the lens on the screen 100 by receiving signals from various video devices such as TV, VCR, DVD Player, PC, camcorder.

Conventionally, three-tube projectors have been used, but now LCD and DLP projectors are used. These LCD and DLP projectors have the function of automatically displaying the optimal screen simply by connecting various video devices without any additional setting. Therefore, these LCD and DLP projectors are rapidly being used for corporate presentations and home theaters.

Conventionally used projector is called PRT (CRT) method, which makes a desired screen in a small and fairly bright CRT, and then forms an image on the screen 100 through a lens. There are three pipes with three PRTs (CRTs): R (red), G (green), and B (blue).

In the case of a single tube type, the particles of R, G, and B are separated, so when the screen is large, the particles are separated, so it is not good to see the magnifier with a magnifying glass. This has the advantage of easy focusing, usually low brightness and low resolution.

In the case of the three tube type, there are three PRT (CRT) tubes each for R, G, and B light, and they are projected on a single screen 100 so that they are in focus so that the color is not visible. Images can be obtained, and brightness and resolution can also be better.

However, since three PRTs (CRTs) do not coincide in the same optical axis, there is a difficulty in adjusting the screen 100 to be arranged on the line where the three optical axes coincide with each other, and the volume is quite large. .

Nowadays, the usage is gradually decreasing due to the decrease in brightness, difficulty in adjusting the deflection according to the frequency at the time of PC input, and difficulty in adjusting the focus caused by the structural disadvantage in the case of the three-pipe type.

For example, the camera 300 may be implemented as a digital camera that captures and outputs an image input from a lens system through an imaging device such as a CCD or a CMOS, and is displayed on the screen 100 by the beam projector 200. The image is taken and output to the user computer 500.

The camera 300 includes a lens system, an imaging unit for converting an optical signal from the lens system into an analog electric signal, and a signal output from the imaging unit, processed and digitally converted into a format suitable for input by a user computer 500. And a camera controller for controlling the overall camera 300.

The lens system is composed of one or more small lenses, and collects and supplies light to the imaging unit. The imaging unit is usually composed of a CMOS imaging device or CCD imaging device, and is a known device that converts light into an electrical signal for each pixel and sequentially outputs it in synchronization with a clock. The converting unit converts the current or voltage proportional to the image brightness output from the image capturing unit into digital data through a slight process and outputs the digital data. In another embodiment, the conversion unit may further include a codec for compressing the photographed image in the JPEG format or the MPEG format, as in the known camera 300.

The input device 400 is, for example, formed of a size that can be easily gripped and used by a user, such as a wireless mouse, and a laser pointer for irradiating a laser for indicating a predetermined portion of an image displayed on the screen 100; The operation command input from the user is transmitted to the user computer 500.

The above-described input device 400 will be described in more detail with reference to FIG. 2. 2 is a block diagram schematically illustrating an input device according to an exemplary embodiment of the present invention. As shown, the input device 400 according to the present invention includes a battery 410 for supplying power for driving the input device, a laser pointer 420 for irradiating a laser, a user computer 500 and data. And a wireless communication unit 430 for transmitting and receiving, a mouse button 441 corresponding to a left / right button of a mouse provided in the user computer 500, and a pointer button 442 for inputting a driving command of the laser pointer 420. A control unit 450 that controls the input unit 440 and the overall input device 400 and transmits an operation command input through the mouse button 441 to the user computer 500 through the wireless communication unit 430. It is configured by.

The laser pointer 420 is a device used when a lecturer or a descriptor points out a predetermined portion at the time of presentation by using the characteristics of a laser having excellent straightness because the wavelength is short and not dispersed.

The laser pointer 420 may be composed of a laser diode (LASER DIODE) that emits a short wavelength laser by the applied power, and a lens that converts the light emitted from the laser diode into parallel light.

When the user presses the pointer button 442 provided on the input device 400, the driving power is applied to the laser diode from the battery 410 which supplies the driving power of the input device, and the laser diode is short-wavelength by the applied power. Is emitted, the emitted light is converted into a parallel beam while passing through the lens is irradiated to the screen (100). The laser thus irradiated forms a small spot on the screen 100 so that a user such as a lecturer or a descriptor can point out a desired part.

The wireless communication unit 430 may be a kind of communication module that is connected to the user computer 500 and transmits and receives data wirelessly through wireless communication protocols such as infrared, RF, and Bluetooth. The wireless communication unit 430 establishes a connection with the user computer 500 according to the wireless communication protocol described above, and transmits a user operation command input from the input unit 440 to the user computer 500.

Additionally, the input device 400 according to the present invention may include a wired interface unit () for transmitting and receiving data through a connection cable with the user computer 500, so that the user may input the input device 400 through a wireless or wired connection. And the user computer 500 may be connected and used.

The input unit 440 may be provided with a plurality of buttons for receiving an operation command input from a user, and more preferably, may be provided in the form of a button of a mouse. The input unit 440 may include two mouse buttons 441 corresponding to the left and right buttons of the mouse provided in the user computer 500, and a pointer button 442 for inputting a driving command of the laser pointer 420. Can be.

The mouse button 441 is provided to the left and right of the front of the input device 400, like the left and right buttons of the mouse provided in the user computer 500, the left button corresponds to the left button of the mouse and performs the same role. The button also plays the same role as the right button of the mouse.

The pointer button 442 is a button for driving the laser pointer 420. When the pointer button 442 is pressed by a user, the laser pointer 420 is supplied from a battery 410 supplying driving power of the input device 400. Power is applied, and the laser pointer 420 is driven.

The controller 450 may be configured of, for example, a microcontroller, which is a single integrated circuit including a microprocessor performing an operation and an accompanying circuit, and controls the entire apparatus according to a driving program mounted thereon.

When the driving command of the laser pointer 420 is input from the pointer button 442 of the input unit 440, the controller 450 supplies power supplied from the battery 410 to the laser pointer 420 so as to supply the laser pointer 420. ), And receives an operation command input from the mouse button 441 and transmits it to the user computer 500 through the wireless communication unit 430.

The user computer 500 may be a personal computer or a laptop computer, and provides the beam projector 200 with image sources such as video, still images, text, various presentation programs, and video output images of the computer. .

In addition, the user computer 500 is wirelessly connected to the input device 400 to drive a corresponding function according to an operation command transmitted from the input device 400, and the laser pointer 420 in the image data output from the camera 300. From the spot detected on the screen 100 is detected by matching the spot and the mouse pointer is displayed, but by calculating the amount of movement according to the movement of the spot to move the mouse pointer to effectively control the user.

The description of the user computer 500 will be described in detail with reference to FIG. 3. 3 is a block diagram schematically illustrating a user computer according to an exemplary embodiment of the present invention. As shown, the user computer 500 according to the present invention includes a communication unit 510 for receiving data including an operation command output from the input device 400 and a beam projector 200 on the screen 100. The image synchronization unit 520 for synchronizing the image displayed and the image input from the camera 300 and the spot of the laser pointer 420 formed on the screen 100 are extracted, and the amount of movement of the extracted spot is calculated and output. According to the movement amount calculator 530 and the movement amount calculated by the movement amount calculator 530, the laser spot is matched with the input device 400 pointer, and image data is transmitted to the beam projector 200 to be displayed on the screen 100. It includes a pointer matching unit 540 for outputting, and a command processor 550 for controlling the entire apparatus and processing a corresponding command according to an operation command of the input device 400 received from the communication unit 510.

The communication unit 510 may be a communication modem that establishes a connection with the input device 400 through a wireless or wired communication protocol and receives an operation command output from the input means.

The image synchronizer 520 synchronizes the image displayed on the screen 100 by the beam projector 200 and the image output from the camera 300. The image displayed on the screen 100 by the beam projector 200 and the image photographed and output by the camera 300 generate a large difference according to the photographing position of the camera 300.

When the two images are synchronized by simply applying the ratio according to the image size, the difference occurs as a large error in calculating the exact position and movement amount of the spot for matching the mouse pointer between the laser spot and the user's computer 500. Doing so can cause malfunctions. Therefore, in order to minimize the error in matching the laser spot and the mouse pointer and to prevent the malfunction, it is necessary to accurately synchronize the two images.

This video synchronization process will be described in more detail with reference to FIGS. 4A to 4C. 4A to 4C are schematic views schematically illustrating an image synchronization process of a presentation providing system according to the present invention. As shown, the image synchronizer 520 moves the mouse pointer of the user computer 500 in the center of the screen 100 and the vertex extracting unit 521 for extracting the vertex of the image input from the camera 300. The center point calculator 522 extracts a spot formed on the screen 100 by the laser pointer 420 so as to correspond to the mouse pointer, and calculates a center point of the image, and the vertex extractor 521 is extracted. Images and screens input from the camera 300 by connecting the center points calculated by the vertex and the center point calculator 522 in a straight line, and calculating the slope and y-intercept of the straight line connecting the vertices and the center point. It is configured to include a synchronization unit 523 for synchronizing the image displayed on the (100).

The vertex extracting unit 521 extracts an outline of an image displayed on the screen 100 in the image input through the camera 300, and extracts and outputs a vertex where each outline meets from the extracted outline.

The center point calculator 522 is to find the difference between the center point of the image displayed on the screen 100 and the center point of the image input from the camera 300 and outputs the mouse pointer of the user computer 500 to the beam projector. Move to the center of the image to be output to the beam projector 200, and outputs a guidance message to the user to match the spot of the laser pointer 420 of the input device 400 with the corresponding mouse pointer, the user mouse pointer When the laser spot is matched with the laser spot, a spot is extracted from the input image of the camera 300 to calculate a center point of the image.

The synchronization unit 523 connects the vertices extracted by the vertex calculating unit and the center point calculated by the center point calculating unit 522 in a straight line, calculates the slope and y-intercept of the straight lines, and synchronizes the two images. .

The algorithm used is Affine transformation. Affine transformations have a collinearity of "any points on a straight line are also on a straight line after the transformation" and a ratio of distance "the midpoint of a line is the midpoint after the transformation." The conversion to be preserved. Such affine transformations correspond to a special class of projective transformations that do not send any point in affine space to infinity.

Geometric contractions, expansions, dilations, reflections, rotations, similarity transformations, shears, and translations are all It is a kind of affine transformation. In general, affine transformation is a combination of rotation, translation, dilation, and iteration.

Affine transformations maintain the ratio of straight lines, but not necessarily angles or lengths. Triangles are also triangles when converted. Thus all triangles are affine to each other. Affine here is the generalization of congruent and similar.

As shown in Figure 4c, after obtaining the coordinates of the four vertices and the center point to obtain the slope and y-intercept of the straight line between each point is shown in Table 1, when applying the affine transformation is shown in Table 2.

When the two images are synchronized according to the ratio of the two images through the slope and the y-intercept of the straight lines calculated by the affine transformation, the points included in each triangle, that is, the unique values of the pixels do not change. The exact position of the spot can be calculated.

The movement amount calculator 530 extracts a laser spot from an image input from the camera 300 and calculates a movement amount of the extracted spot. In order to inspect the area of the laser pointer 420 in the image input from the camera 300, YIQ and RGB color models are used.

The RGB model method is a model expressed based on color information. Since the laser pointer 420 is a strong red color (R = 255), it is a large standard for detecting the laser pointer 420. The YIQ color model is a color used in a television. The model is based on the fact that the human eye is more sensitive to light than color. Therefore, if the range of the light information value of the image information is broadly specified, the result value is less affected by the environmental changes caused by the light.

However, if only one color model is used, it is preferable to use the two model types together because the area can be detected instead of the laser pointer 420.

The image output from the camera 300 used in the present invention can obtain a value of an RGB color model, and in order to convert it to a YIQ color model, a YIQ value is calculated through a conversion process as shown in Equation 1, and the The RGB value and the calculated YIQ value are used to extract the spot of the laser.

However, each frame of the image input from the camera 300 has to repeat the operation as shown in Equation 1, and there is a disadvantage that a lot of load is generated and the operation speed may be slow.

Therefore, in order to extract the laser spot, a method of sampling the RGB and YIQ values of the laser spot, grasping the range of the values, and recognizing the pixels having the RGB and YIQ values included in the range as the laser spots were used. . Table 1 schematically shows the sampling values of the laser spots, and Equation 2 shows a range of RGB values and YIQ values of the laser spots.

Accordingly, the movement amount calculator 530 extracts the laser spot every frame from the camera 300, calculates the movement amount in the image, and outputs the laser spot to the pointer matching unit 540.

According to a characteristic aspect of the present invention, the movement amount calculating unit 530 according to the present invention is not recognized as a spot found in a pixel region occupied by various blemishes or laser spots when the image is filtered by a color region recognized as a laser spot. Since inner pixels can be found, two methods are applied for more accurate spot extraction.

One method is to recognize this as a spot if only one or two pixels are detected as the laser spot area and remove them. By reducing the edge pixel of the pixel detected by the laser spot by 1 pixel and then increasing the edge pixel by 1 pixel, the blemishes composed of only one pixel could be removed.

Another method is to recognize a pixel that is not recognized as a laser spot, and if the other recognized pixel is wrapped as a laser spot and interpolate it. This interpolation method increases the edge pixel by 1 pixel and then decreases the edge by 1 pixel to interpolate the unrecognized pixel.

The pointer matching unit 540 receives the position information from the image of the laser spot extracted and output from the movement amount calculating unit 530, matches the mouse pointer of the user computer 500 with the corresponding spot, and outputs it to the beam projector 200. In response to the movement amount of the laser spot output from the movement amount calculation unit 530, the pointer of the mouse is moved accordingly so that the user performs an input function through the input device 400.

The command processor 550 performs a corresponding command according to an operation command transmitted from the input apparatus 400 through wireless or wired communication. The operation command transmitted from the input device 400 is a command outputted from the mouse button 441 provided in the input unit 440 of the input device 400, and is provided in the input device 400 according to the present invention as described above. The mouse button 441 of the input unit 440 is functionally associated with the left / right button of the mouse, which is one of the input means of the user computer 500.

When the user moves the laser spot to the image displayed on the screen 100 through the input device 400, for example, the pointer matching unit 540 moves the spot to an icon located on the desktop of the corresponding user computer 500. According to the movement of the mouse pointer of the computer 500 is matched to move to the icon.

When the user double-clicks the left button of the mouse button 441 of the input unit 440, the control unit 450 of the input device 400 executes an icon execution command by wireless or wired communication according to the input of the mouse button 441. It transmits to the user computer 500, the command processing unit 550 receives this and processes the execution command of the icon.

Accordingly, the input device using the laser pointer according to the present invention and the system for providing a presentation using the same according to the present invention include a function of the laser pointer 420 as well as an image of the screen 100 including a laser spot formed on the screen 100. And the image is processed to match the pointer of the mouse, and by forming an input key functionally corresponding to the left and right buttons of the mouse in the input device 400, the image is conveniently presented during the presentation through the beam projector 200 It has the advantage of being able to control the computer providing the source.

According to an additional aspect of the present invention, the presentation providing system according to the present invention recognizes a drawing pattern of the laser pointer 420 and executes a task set by a user in comparison with a predefined pattern. 5 is a schematic diagram schematically showing a drawing pattern recognition of a laser spot according to an embodiment of the present invention. As shown, the input device according to the present invention further includes a pattern button 443 for inputting a trajectory recognition command of the laser pointer 420 irradiated from the laser pointer 420, and the user computer 500 includes a pattern button. The pattern recognition unit 560 further recognizes the trajectory of the laser pointer 420 drawn on the screen 100 through 443, and outputs a control command corresponding to the laser pointer 420 to the command processor 550.

The pattern button 443 may be formed at any position that does not interfere with the side of the input device 400 or using the mouse button 441. When the pattern button 443 is pressed, the control unit 450 of the input device 400 recognizes that the corresponding pattern button 443 is input and recognizes that the pattern button 443 is input. The pattern recognition unit 560 of the user computer 500 may be connected through wireless or wired communication. Send a pattern recognition command.

The pattern recognition unit 560 receives a pattern recognition command output from the control unit 450 of the input device 400 according to the input of the pattern button 443 to detect an amount of change in the tilt of the x-axis and the y-axis according to the movement of the laser spot. Recognizes the drawing pattern of the spot and executes a pre-registered job according to the recognized pattern.

For example, when a user draws a W. "W" shape on the screen 100 using the laser pointer 420, the user computer 500 recognizes this and "W" shape among predefined patterns. Search whether the pattern is registered, and if there is a W-shaped pattern, a setting operation corresponding thereto is executed, for example, "Microsoft Word".

Examples of such pattern recognition include "W" for "Microsoft Word", "M" for "Mailer" such as "Outlook", and "H" for easy execution of programs such as "Hangul and Korean Hangul." Has an advantage.

According to a further aspect of the present invention, the input device 400 of the presentation providing system according to the present invention further includes an execution button 444 corresponding to an operation command of a predetermined user computer 500, and the user computer 500 The command processing unit 550 receives an input of the execution button 444 output from the input device 400 and outputs a control signal to perform a function according to a corresponding operation command.

The action button 444 can be formed at any position that does not interfere with the use of the mouse button 441 or the side of the input device 400. When the execution button 444 is pressed, the control unit 450 of the input device 400 recognizes that the execution button 444 is input and executes the command processing unit 550 of the user computer 500 through wireless or wired communication. Sends that button 444 has been entered. The command processor 550 performs a function of the corresponding user computer 500 according to the organization command corresponding to the execution button 444 set by the user.

For example, when the user sets the function of the execution button 444 to a function of closing a key activated on the desktop of the current user's computer 500, the user may execute the execution button of the input device 400. When the user enters 444, the user computer 500 receives the input of the execution button 444 from the input device 400 and closes the window window currently activated on the desktop.

In addition, when the execution button 444 is set to a command for executing a predetermined program, for example, a mailer such as "Microsoft Word", "Outlook", or a program such as "Hangul and Soft Hangul". The program can be conveniently executed by simply pressing the button 444.

As described above, an input device using a laser pointer and a presentation providing system using the same according to the present invention capture a screen image including a laser spot function as well as a laser spot formed on the screen 100 with a camera and process the image. By matching with the pointer of the mouse, by forming an input key functionally corresponding to the left and right buttons of the mouse on the input device and receiving and processing it wirelessly or wired, the image is conveniently presented during the presentation through the beam projector It has the advantage of being able to control the computer providing the source.

In addition, by recognizing the drawing pattern of the laser pointer of the input device and executing the task set by the user in comparison with the predefined pattern, it is easy to move to the user's computer and execute the program easily without inputting the execution command of the separate program. Has

In addition, an execution button corresponding to a preset operation command of the user computer is formed in the input device, and the user computer detects an input of the execution button and executes the operation command, thereby executing the operation command of a computer frequently used by the user. It has the advantage of easy input.

The present invention has been described above with reference to preferred embodiments, but is not limited thereto, and is not limited to the present invention by the appended claims, which are intended to cover many modifications that will be apparent to those skilled in the art without departing from the scope of the present invention. Should be interpreted.

Claims (15)

A beam projector for outputting input image data to a screen; A camera for capturing and outputting an image formed on the screen; An input device including a laser pointer configured to wirelessly output an operation command from a user and irradiate a laser; Provides image data to the beam projector, wirelessly connected to the input device to drive the corresponding function according to an operation command transmitted from the input device, and irradiated from the laser pointer on the image data output from the camera to the screen A user computer for detecting a spot formed and matching and displaying the spot with a mouse pointer; Presentation providing system comprising a. The apparatus of claim 1 wherein the input device is: A wireless communication unit for transmitting and receiving data with the user computer; An input unit including a mouse button corresponding to a left / right button of a mouse provided in the user computer and a pointer button for inputting the laser pointer driving command; A control unit which controls the entire input device and transmits an operation command input through the mouse button to the user computer through the wireless communication unit; Presentation providing system comprising a. The computer of claim 1, wherein the user computer is: A communication unit for receiving data including an operation command output from the input device; An image synchronizer configured to synchronize an image displayed by the screen with an image input from the camera; A movement amount calculating unit for extracting a spot of the laser pointer formed on the screen and calculating and outputting a movement amount of the extracted spot; A pointer matching unit which matches the laser spot with the mouse pointer of the user computer according to the movement amount calculated by the movement amount calculating unit and outputs image data to the beam projector to be displayed on the screen; A command processor for controlling the overall apparatus and processing a corresponding command according to an input device operation command received from the communication unit; Presentation providing system comprising a. The method of claim 3, wherein the image synchronization unit: A vertex extracting unit which extracts vertices of an image input from the camera; A center point calculator configured to move a mouse pointer to the center of the screen, and extract a spot formed on the screen by the laser pointer corresponding to the mouse pointer to calculate a center point of an image; The vertices extracted by the vertex extracting unit and the center points calculated by the center point calculating unit are connected in a straight line, and the slopes and y-intercepts of the straight lines connecting the vertices and the center points are calculated and input from the camera. A synchronization unit for synchronizing an image and an image displayed on the screen; Presentation providing system comprising a. The method of claim 2 or 3, wherein the input unit: And a pattern button for inputting a laser pointer trajectory recognition command irradiated from the laser pointer; The user computer: A pattern recognition unit for recognizing the trajectory of the laser pointer drawn on the screen through the pattern button and outputting a control command corresponding to the laser pointer to the command processor; Presentation providing system comprising a. The method of claim 2 or 3, wherein the input unit: An execution button for inputting a predetermined operation command of a user computer; The command processing unit: And a control signal is output to receive an input of an execution button output from the input device and to perform a function according to a corresponding operation command. The device of claim 2, wherein the input device is: And a wired interface configured to transmit and receive data through the connection cable with the user computer. An input device for wirelessly outputting to a user computer that receives an operation command from a user and provides image data to a beam projector, A laser pointer for irradiating a laser onto a screen on which image data output from the beam projector is displayed; A wireless communication unit for transmitting and receiving data with the user computer; An input unit including a mouse button corresponding to a left / right button of a mouse provided in the user computer and a pointer button for inputting the laser pointer driving command; A control unit which controls the entire input device and transmits an operation command input through the mouse button to the user computer through the wireless communication unit; Input device using a laser pointer comprising a. The method of claim 8, wherein the input unit: And a pattern button for inputting a laser pointer trajectory recognition command irradiated from the laser pointer. The method of claim 8, wherein the input unit: And an execution button for inputting a predetermined operation command of a user computer. The device of claim 8, wherein the input device is: And a wired interface unit configured to transmit and receive data through the connection cable with the user computer. A user who outputs image data to a beam projector, wirelessly receives an operation command from a user, and has a presentation program that performs a function according to an operation command output from an input device including a laser pointer for irradiating leisure. A computer-implemented presentation providing system, the user computer comprising: An image synchronization unit for synchronizing the image input from the screen and the camera; A movement amount calculating unit for extracting a spot of the laser pointer formed on the screen and calculating and outputting a movement amount of the extracted spot; A pointer matching unit which matches the laser spot with the mouse pointer of the user computer according to the movement amount calculated by the movement amount calculating unit and outputs image data to the beam projector to be displayed on the screen; A communication unit for receiving data including an operation command output from the input device; A command processor for controlling the overall apparatus and processing a corresponding command according to an input device operation command received from the communication unit; Presentation providing system comprising a. The method of claim 12, wherein the image synchronization unit: A vertex extracting unit which extracts vertices of an image input from the camera; A center point calculator configured to move a mouse pointer of the user computer to the center of the screen, and extract a spot formed on the screen by the laser pointer corresponding to the mouse pointer to calculate a center point of an image; The vertices extracted by the vertex extracting unit and the center points calculated by the center point calculating unit are connected in a straight line, and the slopes and y-intercepts of the straight lines connecting the vertices and the center points are calculated and input from the camera. A synchronization unit for synchronizing an image and an image displayed on the screen; Presentation providing system comprising a. 13. The system of claim 12, wherein the user computer is: A pattern recognition unit for recognizing the trajectory of the laser pointer drawn on the screen according to the pattern recognition command output from the input device and outputting a control command corresponding thereto to the command processor; Presentation providing system comprising a. The method of claim 12, wherein the command processing unit: And a manipulation command of a user computer corresponding to the input of an execution button provided in the input device.

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