KR100757952B1 - System for supporting lecture using radio communication - Google Patents

Abstract

The present invention relates to a lecture support system using wireless communication, and includes a first device for generating multimedia data for lecture and a second device for reproducing multimedia data generated by the first device and supporting lecture. An integrated controller for wirelessly transmitting devices, multimedia data provided from the first devices by wired connection to the first devices, and a control signal for integrally controlling the second devices through wireless communication; It is connected to the wired to, and comprises a set-top box for receiving the multimedia data and control signals transmitted through the wireless communication from the integrated controller to transmit to the second device to play the multimedia data and control the operation of the device.

According to the present invention, the lecturer can perform integrated control of various devices for conducting the lecture in the classroom. In addition, by performing wireless communication between the integrated controller and the set-top box, the lecturer can freely change the position of the lecture in the classroom.

Lecture, wireless, controller, set-top box, screen, projector, lighting

Description

Lecture support system using wireless communication {SYSTEM FOR SUPPORTING LECTURE USING RADIO COMMUNICATION}

1 is a block diagram of a lecture support system using wireless communication according to an embodiment of the present invention.

2 is a block diagram illustrating an integrated controller according to an embodiment of the present invention.

3 is a block diagram illustrating a configuration of the controller shown in FIG. 2;

Figure 4 is a block diagram of a set-top box according to an embodiment of the present invention.

Figure 5 is a block diagram of a command input unit provided in the integrated controller according to an embodiment of the present invention.

<Explanation of symbols for main parts of the drawings>

110: PC 120: notebook

130: physical imager 140: VTR / DVD

150: copyboard 200: integrated controller

210: network interface unit (N / I) 220: control unit

230: signal processing unit 240: wireless communication unit

250: memory 260: display unit

270 command input unit 300 set-top box

310: wireless communication unit 320: control unit

330: signal processing unit 340: network interface unit (N / I)

350: memory 360: display

370: command input unit 410: projector

420: indoor lighting 430: electric banner

440: electric curtain 450: electric screen

460: Electric Elevation

The present invention relates to a lecture support system using wireless communication, and in particular, video and audio data provided from various multimedia devices used in a classroom are wirelessly transmitted to a projector installed at any place in the classroom, and various other The present invention relates to a lecture support system using wireless communication for integrally controlling various devices used in a classroom.

Generally speaking, if a lecturer stands at the pulpit and writes on the board, the lecturers can think of the lecturer writing down the written information on the board.

However, due to the development of multimedia technology, the lecture environment of the classroom is also changing. In addition to simply writing on a blackboard, lecturers are using a system that allows them to use a variety of multimedia devices to show a variety of video materials.

In order to display video data in the classroom, the brightness of the classroom lighting must be adjusted accordingly. To this end, preparations should be made to turn off the lights in the room or to block outside light using curtains.

In addition, the classroom needs an image reproducing device (for example, VTR) to reproduce the image material in order to show the image material to the participants, a projector to project the image on a large screen, and reflect the image projected through the projector You also need a screen to do it.

Conventionally, since lighting, curtains, image reproducing apparatuses, projectors, screens, and the like are independently installed in the room, the user must individually control the operation.

To switch the light on or off, the switch must be operated. Also, to walk a curtain, you have to go to the window and walk the curtain yourself. In addition, it is necessary to install an image reproducing apparatus, install a projector, and perform individual operations of lowering and raising the screen.

As a result, the lecturer is cumbersome to perform this series of tasks each time.

In addition, a large lecture room is provided with a broadcasting room equipped with image reproducing equipment for reproducing image data, and a projector for projecting image data on a screen is fixedly installed at a fixed position. The video player and projector installed in the broadcasting room are connected by wire.

In addition, when a lecturer uses a laptop for lectures, the lecturer often connects the laptop to a cable installed from the projector to the platform. Accordingly, the lecturer has a problem in that the location of the lecturer is limited according to the installation environment of the cable, as the lecturer should perform the lecture by installing the notebook in the place where the cable is installed.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem in the related art, and facilitates the installation of various multimedia devices required to perform a lecture in a lecture room, and performs integrated control on equipment including the various multimedia devices installed therein. The purpose of the present invention is to provide a lecture support system using wireless communication.

According to an aspect of the present invention for achieving this object, at least one or more first devices for generating multimedia data for lectures, and at least one installed to support the lectures to play the multimedia data generated by the first device Provided is a lecture support system using wireless communication including one or more second devices, an integrated controller for performing wireless communication, and a set-top box.

Here, the integrated controller is wired to the first device and performs wireless communication with the set-top box to transmit multimedia data provided from the first device and control signals for integrally controlling the second device through wireless communication. do.

Meanwhile, the set-top box is wired to the second device, performs wireless communication with the integrated controller, receives multimedia data and control signals transmitted through the wireless communication from the integrated controller, and transmits the multimedia data to the second device to play the multimedia data. And control the operation of the device.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, in adding reference numerals to the elements of each drawing, it should be noted that the same elements are denoted by the same reference numerals as much as possible even if they are displayed on different drawings.

In addition, in the following description there are shown a number of specific details, such as components of the specific circuit, which are provided only to help a more general understanding of the present invention that the present invention may be practiced without these specific details. It is self-evident to those of ordinary knowledge in Esau.

In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram illustrating a lecture support system using wireless communication according to an embodiment of the present invention.

Referring to FIG. 1, a lecture support system using wireless communication according to an embodiment of the present invention includes various multimedia devices 110-150 used to perform a lecture, various devices installed in a lecture room (410-460), The integrated controller 200 transmits a signal input from an arbitrary multimedia device 110-150 through wireless communication, and transmits a control signal for integrally controlling various devices 410-460 in the classroom. The set-top box 300 is configured to receive signals transmitted over the air from the integrated controller 200 and transmit the signals to the corresponding devices 410 to 460 to control the operation of the corresponding devices.

Various multimedia materials used by the lecturer for the lecture may be generated or provided by the PC 110, the notebook 120, the real imager 130, the VTR / DVD 140, and the copyboard 150. .

Each of these multimedia devices 110-150 is connected to the integrated controller 200 by wire.

The PC 110 and the notebook 120 are connected to the integrated controller 200 for the lecturer to access the Internet or to open the lecture content file.

The real imager 130 is a device for projecting through the projector 410 by reading data that is not made of a computer file as a graphic file.

The copyboard 150 displays an image projected to the projector 410 wirelessly through the integrated controller 200. The lecturer draws an important line or makes an important mark or takes a note using a touch pen or a mouse. It is a device that is reflected in the image as it is.

The integrated controller 200 is connected to the multimedia device 110-150 by wire, and is connected to the set-top box 300 through wireless communication to communicate with each other.

Accordingly, when the integrated controller 200 selects a specific device 410-460 to be controlled while maintaining communication with the set top box 300, the control controller 200 issues the control command to the set top box 300. The set top box 300 controls the corresponding devices 410-460.

The set-top box 300 is connected to at least one device 410-460 constituting a classroom network through a wire to communicate with each device 410-460, and the integrated controller 200 through UWB wireless communication. Receive any device control signal from the device to control the device.

At this time, the set-top box 300 and each device is equipped with a PLC module for communication between each other, is connected via a power line.

Here, PLC (Power Line Communication) refers to a method of converting a communication signal into a high frequency signal of 100KHz-30MHz through a power line installed in a home or office, and separating and receiving the signal using a high frequency filter. . Electric power used in Korea is AC signal of 60Hz, and it is used by home appliances by converting it into DC through power converter. High-frequency signal in power line communication is a low output signal, so there is no effect on general home appliance operation.

The advantage is that a separate communication line is unnecessary and can be easily accessed using an outlet. Disadvantages include limited transmission power, high load interference and noise, variable signal interference and impedance characteristics, and the selective nature of frequency.

In addition to the PLC, the set top box 300 and each of the devices 410 to 460 may be connected by one of IEEE 1394, HPNA, and RS 232 communication methods.

On the other hand, as shown in the set-top box 300, the projector 410, indoor lamp 420, electric banner 430, electric curtain 440, electric screen 450, the electric elevation 460 is wired Connected.

Each device 410-460 connected to the set top box 300 is equipped with a PLC module to perform an operation by a control signal of the set top box 300.

The overall operation of the lecture support system using wireless communication according to an embodiment of the present invention configured as described above will be described.

The lecturer operates the integrated controller 200 to select a multimedia device for the lecture. For example, when the real imager 130 is to be used, the real imager 130 is selected as an input of the integrated controller 200.

Thereafter, the lecturer operates the integrated controller 200 to lower the screen of the electric screen 450 by using the projector 410 to display the multimedia data generated by the real imager 130 on the electric screen 450. Enter the control command.

Accordingly, the integrated controller 200 generates a control signal for lowering the screen of the electric screen 450 and transmits it to the set top box 300 through wireless communication. The set top box 300 lowers the screen of the electric lean 450 by transmitting a control signal wirelessly received from the integrated controller 200 to the electric screen 450 connected by wire.

Then, when the electric screen is lowered, the lecturer inputs a control command for turning on the power of the projector 410 by operating the integrated controller 200 to operate the projector 410.

Accordingly, the integrated controller 200 generates a control signal for turning on the power of the projector 410 and transmits it to the set top box 300 through wireless communication. The set top box 300 transmits a control signal wirelessly received from the integrated controller 200 to the projector 410 connected by wire to turn on the power of the projector 410.

When the power of the projector 410 is turned on, the lecturer inputs a control command to turn off a part of the indoor lamp 420 by manipulating the integrated controller 200 to slightly darken the lighting of the classroom.

Accordingly, the integrated controller 200 generates a control signal for turning off a part of the indoor lamp 420 and transmits it to the set top box 300 through wireless communication. The set top box 300 transmits a control signal wirelessly received from the integrated controller 200 to the indoor lighting 420 connected by wire, thereby turning off a part of the indoor lighting 420.

When the lighting is adjusted, the lecturer controls a command to transmit the multimedia data generated by the real imager 130 by manipulating the integrated controller 200 to project the multimedia data generated through the real imager 130 to the projector 410. Enter.

Accordingly, the integrated controller 200 transmits the multimedia data input from the real imager 130 to the set top box 300 through wireless communication. The set top box 300 transmits the image information of the real imager 130 wirelessly received from the integrated controller 200 to the projector 410 and projects the image information on the screen of the electric screen 450.

Then, the lecturer proceeds with reference to the image information projected on the electric screen 450.

2 is a block diagram illustrating an integrated controller according to an embodiment of the present invention.

2, the integrated controller 200 according to an embodiment of the present invention is wired to the set-top box 300 in accordance with the network interface unit 210 and the input command connected to at least one or more devices via wires. The control unit 220 for generating a control signal of the corresponding device so as to control the corresponding device connected via the signal processing unit 230 for encoding the signal processing for transmission of the signal of the multimedia device input through the network interface unit 210 And a wireless communication unit 240 for wirelessly transmitting a signal processed by the signal processing unit 230 to the set-top box 300 under the control of the controller 220, and a memory for storing various information for controlling each device. And a display unit 260 for displaying screen information for controlling the device, and a command input unit 270 for receiving a command for controlling an arbitrary device among the devices in the home. All.

The network interface unit 210 integrates a PC 110, a notebook 120, a real imager 130, a VTR / DVD 140, and an electronic blackboard 150 to provide various multimedia materials for lecturers to use for lectures. It provides an interface for connecting to the controller 200.

To this end, the network interface unit 210 includes a USB port, an IEEE1394 port, and an RS-232 port.

When an arbitrary command is input through the command input unit 270, the controller 220 interprets the corresponding command and then controls the corresponding device 410-460 connected to the set top box 300 via a wire in response to the command. It generates a control signal of the device so as to, and transmits the generated device control signal to the set-top box 300 through the wireless communication unit 240.

For example, when a user selects a control command for controlling a particular device by combining keypads of the command input unit 270, the controller 220 generates a signal for the command to generate a wireless communication unit 240. Transfer to the set-top box 300 through.

In addition, the controller 220 provides screen information for controlling the device to the display unit 260 using the GUI, and displays the execution process of the command input through the command input unit 270.

The signal processor 230 wirelessly transmits multimedia data input from the PC 110, the notebook 120, the real imager 130, the VTR / DVD 140, and the copyboard 150 connected through the network interface unit 210. The communication unit 240 performs signal processing for compressing the data for transmission through wireless communication.

In addition, the control signal input through the command input unit 270 is performed by the wireless communication unit 240 to perform a signal processing for the compression process for transmission via wireless communication.

In order to transmit the multimedia data using the bandwidth supported by the UWB wireless technology in the wireless communication unit 240, the multimedia data input through the network interface unit 210 is processed in the format of the USB 2.0 protocol or the IEEE 1394 protocol. I need to do something.

To this end, the signal processor 230 performs compression using, for example, the MPEG technique. The signal processed by the signal processor 230 may be classified into a video image signal input from the VTR / DVD and an RGB signal input from the PC 110, the notebook 120, and the real imager 130.

Accordingly, the signal processor 230 processes an RGB signal among the signals input through the network interface 210 to an RGB signal processing module (not shown) that performs RGB signal processing, and the video image signal is a video image signal. The video image signal processing module (not shown) performs the processing.

In this case, the processing of the RGB signal and the video image signal to the signal input through the network interface unit 210 in the signal processor 230 is performed according to the control signal input through the command input unit 270.

Therefore, when a control signal comes in to process the RGB signal through the command input unit 270, the RGB signal processing module performs the signal input through the network interface unit 210.

Meanwhile, when a control signal is input to process the video image signal through the command input unit 270, the video image processing module performs a corresponding signal input through the network interface unit 210.

In addition, although the signal selection in the signal processing unit 230 has been described to be made by a control signal input through the command input unit 270, a separate manual switch (not shown) is provided to operate the manual switch. It is also possible to select and process RGB signals and video image signals.

For example, when the manual switch is pressed, the signal processor 230 may perform an operation for processing the RGB signal, and when the manual switch is returned, the signal processing unit 230 may be configured to perform a video production signal processing operation for processing the video image signal.

The signal processor 230 performs NTSC signal processing and PAL signal processing to process the video image signal input from the VTR / DVD.

The National Television System Committee (NTSC) was established in December 1953 and was established in the United States to develop a set of standard protocols for transmitting and receiving television broadcasts. The Federal Communications Commission (FCC) originally adopted the CBS method, which sends three primary colors one after the other, but later adopted the NTSC method, which can be used for black and white television.

However, since NTSC method requires high performance of transmission circuit for high band compression, Germany proposed PAL (Phase Alternation Line) method and France proposed SAM (Squentiel Couleur Mmoire) method.

 The feature of the NTSC system is that the human eye hardly notices the color of the small area. A relatively large area signal (about 500 kHz) transmits three primary colors faithfully, while for a medium area signal (500 kHz to 1.5 MHz), the color saturation is lowered and the luminance (brightness of a light source or a light reflector surface with a certain area) is reduced. The amount indicated is accurately transmitted, and only a luminance signal is transmitted to a small area signal (1.5 MHz or more).

PAL (Phase Alternation by Line) is a color TV broadcasting system developed in Germany, similar to the NTSC system adopted in the United States and other countries, but differs in the way it handles color signals.

The PAL method has the advantage that the color transmission according to the signal transmission system is less than that of the NTSC method, and the broadcast equipment does not need a high standard. It is a broadcast method with 25 frames per second, which lags behind the frame rate of NTSC (30 frames per second) but uses 625 lines of vertical scanning lines and uses higher bandwidth, resulting in a higher resolution than NTSC and displaying 560 x 720 pixels. PAL receivers have the disadvantages of image flickering and being somewhat more expensive than NTSC schemes.

The wireless communication unit 240 is used by the integrated controller 200 to perform wireless communication with the set top box 300, and is linked with the wireless communication unit 310 of the set top box 300. Here, preferably, the wireless communication unit 240 is configured using ultra wideband (UWB) wireless technology.

The wireless communication unit 240 is connected to the signal processing unit 230 through a USB 2.0 interface or an IEEE 1394 interface to wirelessly transmit data processed by the signal processing unit 230.

Accordingly, the wireless communication unit 240 receives the multimedia data or control signal compressed by the signal processing unit 230 according to the USB 2.0 protocol or the IEEE 1394 protocol format through the USB 2.0 interface or the IEEE 1394 interface, and then set-top box 300. Is transmitted using UWB wireless technology.

UWB wireless technology is emerging as a short-range high-speed data transmission device that can be used without permission by distributing and transmitting signals in a low power density spectrum over a very wide bandwidth of 500 MHz or more.

In particular, it is the only high-speed wireless transmission technology that can replace the existing wired device using the high-speed transmission speed of 400Mbps or more with the wireless device, and the circuit structure is simple and low cost is possible, and it is 5 minutes compared to the existing mobile phone or wireless LAN device. It can operate at one level of power, evolving into a high-speed wireless personal network (WPAN) technology for interfacing high-speed information devices such as digital cameras, camcorders, HDTVs, high-quality Hi-Fi, MP3 transmissions, monitors, projects, etc. It is expected to be.

Accordingly, UWB wireless technology provides high spatial efficiency compared to wireless LAN, home RF, wireless IEEE 1394, Bluetooth, and the like, thereby enabling high-speed transmission.

Ultra wideband (UWB) communication is generally broadband over 25% of the center frequency, and is used in UWB communication systems, unlike most existing wireless technologies transmitted after carrier modulation. Do not use

Therefore, the carrier frequency and phase recovery procedures required in the conventional narrowband communication scheme are not required and thus can be implemented more simply. The UWB (Ultra Wideband) communication method has the advantage of sharing the frequency band that is already occupied and used, and because it does not require the frequency shifting process in the transmitter / receiver, unlike the conventional narrowband communication method, A communication system can be implemented at low cost.

In addition, there is an advantage that the desired transmission speed and transmission distance can be secured through relatively low power consumption, and is suitable for a system supporting high data rate.

The memory 250 stores a program and various data driven by the controller 220. This data includes information about each premises device connected to the set-top box. Specifically, the ID, product number, manufacturer, serial number, etc. of each device may correspond.

The memory 250 is also used to store information on the keypad for the user to use various functions for controlling the device through the command input unit 270. In addition, the integrated controller 200 also stores information on the devices that can be controlled. In addition, various device control information to be displayed on the display unit 260 is also stored.

The display unit 260 may display various device information and menu information for device control according to the development of liquid crystal technology. That is, it displays the information received about the various devices connected to the set-top box 300 from the set-top box 300 through the wireless communication unit 240, and also displays the information stored in the memory 250.

In this case, it is important to display the information on the various devices on the display unit 260 so that the devices are easily recognized and the control of the specific devices is easy. In particular, since graphics are easier to understand than text, tree-based structures can be used according to the arrangement of classrooms where devices are located using a graphical user interface (GUI). In addition, when the devices arranged in a tree structure are displayed on the display unit 250, a user can easily control the devices by using a command icon technique.

In this case, the display unit 260 provides an advantage of visually providing various devices in the home through screen information. However, even without the display unit 260, it is also possible to designate each device or to select the control of the designated device through the command input unit 220 alone.

The command input unit 270 is a module for receiving a command for controlling an arbitrary device among the devices in the classroom. An exemplary embodiment for receiving a command may be a keypad. In addition, a command for controlling the device may be input by using a touch screen using liquid crystal.

In addition, in recent years, as liquid crystal technology is developed, an icon indicating the shape of a device may be displayed as screen information by using a liquid crystal and a touch screen, and when the icon is clicked, the corresponding device may be controlled accordingly.

3 is a block diagram illustrating a control unit included in the integrated controller shown in FIG. 2.

Referring to FIG. 3, the controller 220 is connected to an input / output selector 221 for selecting a device for receiving multimedia data from among a plurality of devices 110-150 providing multimedia data, and connected to the set-top box 300. When a control command for various devices 410-460 is input, the device 410 connected to the set top box 300 according to the control command execution unit 222 and the control command execution unit 222 executing the command. And a display control unit 223 for controlling the operation state of the display units 460 to be displayed on the display unit 260.

The input / output selection unit 221 is a PC 110, a notebook 120, a real imager 130, a VTR / DVD 140, and an electronic device connected to the integrated controller 200 according to a command input through the command input unit 270. A device to receive multimedia data is selected from the blackboard 150.

In addition, the input / output selection unit 221 may include a projector 410 connected to the set top box 300, an indoor lamp 420, an electric banner 430, and an electric curtain 440 according to a command input through the command input unit 270. From among the electric screen 450 and the electric elevator 460, a device for controlling the operation or outputting the multimedia data is selected.

The control command execution unit 222 generates a control signal for executing various control commands input by the command input unit 270 and transmits the control signal to the set top box 300 through the wireless communication unit 240.

For example, when receiving a control command for the indoor lighting, generates a control signal for turning on or off the indoor lighting (420). In addition, when a command for controlling the electric banner 430 is input, a control signal for raising or lowering the electric banner 430 is generated.

In addition, when a command for controlling the electric curtain 440 is input, a control signal for opening or closing the electric curtain 440 is generated.

In addition, when a command for controlling the electric screen 450 is input, a control signal for raising, lowering or stopping the electric screen 450 is generated.

In addition, when a command for controlling the electric elevator 460 is input, a control signal for raising or lowering the electric elevator 460 is generated.

In addition, when a command for turning on or resetting the power of the PC 110 is input, a control signal for turning on or resetting the power of the PC 110 is generated accordingly.

In addition, when a command for controlling the projector 410 is input, a control signal for turning on or off the projector 410 is generated and the multimedia data to be projected through the projector 410 is selected. That is, a control signal for deciding whether to output RGB data or video data is output.

The display control unit 223 performs control for displaying on the display unit 260 an operation state in which the control command execution of the control command execution unit 222 is performed on the corresponding device. Accordingly, the display control unit 223 may simply display an operation state for executing a control command through a lamp or the like, or generate a tree-type menu on the display unit 260 to display an operation state of the corresponding device. have.

4 is a block diagram illustrating a set top box according to an embodiment of the present invention.

Referring to FIG. 4, the set top box 300 according to an exemplary embodiment of the present invention may include a wireless communication unit 310 performing wireless communication with the integrated controller 200 and a set top box 300 in response to an input command. The controller 320 controls a corresponding device connected through a wire or outputs decoded multimedia data to the corresponding device, and a signal processor 330 for decoding and processing the multimedia data of the multimedia device input through the wireless communication unit 310. ), A network interface unit 340 connected to at least one or more devices 410-460 via wire, a memory 350 storing various information for controlling each device, and screen information for controlling the device. The display unit 360 to display and a command input unit 370 for receiving a command for controlling any device in the indoor device is configured.

The wireless communication unit 310 is used by the integrated controller 200 to perform wireless communication with the set-top box 300, and is linked with the wireless communication unit 240 of the integrated controller 200. Here, preferably, the wireless communication unit 310 is configured using UWB (Ultra Wideband) wireless technology. The wireless communication unit 310 is connected to the signal processing unit 330 through a USB 2.0 interface or an IEEE 1394 interface.

In this case, the signals received from the integrated controller 200 through the UWB wireless communication in the wireless communication unit 310 are signals that are compressed and transmitted according to the USB 2.0 protocol or the IEEE 1394 protocol.

Accordingly, the wireless communication unit 310 converts the wireless signal received from the integrated controller 200 into a baseband signal conforming to the USB 2.0 protocol or the IEEE 1394 protocol, and delivers the signal to the signal processing unit 340.

When a control command is input from the integrated controller 200 through the wireless communication unit 310, the control unit 320 interprets the corresponding command, and then corresponds to the corresponding device connected to the set-top box 300 by wire. A control signal of the corresponding device is generated to control the electronic device 410-460, and the generated device control signal is transmitted to the corresponding device through the network interface unit 340.

In addition, when the user selects a control command for controlling a particular device by combining keypads of the command input unit 370, the controller 320 generates a signal for the command and then generates the signal through the network interface unit 340. Deliver to the device.

In addition, the controller 320 provides screen information for controlling the device to the display unit 360 using a GUI, and displays a process of executing a command input through the integrated controller 200 or the command input unit 370.

The signal processor 330 receives and decodes multimedia data of the PC 110, the notebook 120, the real imager 130, the VTR / DVD 140, and the copyboard 150 transmitted through the wireless communication unit 310. Process.

In this case, the signal processor 330 is connected to the wireless communication unit 310 through a USB 2.0 interface or an IEEE 1394 interface.

Accordingly, the data received by the signal processor 230 through the USB 2.0 interface or the IEEE 1394 interface from the wireless communication unit 310 is multimedia data or a control signal compressed according to the USB 2.0 protocol or the IEEE 1394 protocol format.

To this end, the signal processor 330 performs MPEG decoding on multimedia data or control signals compressed according to the USB 2.0 protocol or the IEEE 1394 protocol format, for example, and the signals processed by the signal processor 330 are obtained from VTR / DVD. The video image signal is input and divided into RGB signals input from the PC 110, the notebook computer 120, and the real imager 130.

The network interface unit 340 connects the projector 410, the indoor lighting 420, the electric banner 430, the electric curtain 440, the electric screen 450, and the electric elevator 460 to the set top box 300. It is a wired interface.

The network interface unit 340 includes a PLC module for transmitting a control signal transmitted from the integrated controller 200 to the corresponding devices 410-460 connected to the set top box 300.

In this case, the network interface unit 340 may perform the interface between the set-top box 300 and each device 410 460 using not only a PLC but also an IEEE1394, HPNA, and RS 232 interface.

For example, when the control signal provided from the integrated controller 200 is a signal for controlling the projector 410, the corresponding control signal is transmitted to the projector 410 by using the RS 232 interface, so that the corresponding projector 410 may transmit the control signal. It is possible to select whether to play a video image signal or an RGB signal.

Meanwhile, when the control signal provided from the integrated controller 200 is a signal for controlling other devices 420-460 other than the projector 410, the device is transmitted to the corresponding devices 420-460 using the RS 232 interface. An output port of the network interface unit 340 may be configured to control the plurality of electronic devices 420 to 460.

The memory 350 stores a program and various data driven by the controller 320. This data includes information about each device connected to the set-top box. Specifically, the ID, product number, manufacturer, serial number, etc. of each device may correspond.

The memory 350 is also used to store information on the keypad for the user to use various functions for controlling the device through the command input unit 270. In addition, the set-top box 300 stores information on the devices that can be controlled. In addition, various device control information to be displayed on the display unit 360 is also stored.

The display unit 360 may display various device information and menu information for device control according to the development of liquid crystal technology. That is, the information received about the various devices connected through the network interface unit 340 is displayed, and the information stored in the memory 350 is displayed.

The command input unit 370 is a module for receiving a command for controlling an arbitrary device among the devices in the classroom. An exemplary embodiment for receiving a command may be a keypad. In addition, a command for controlling the device may be input by using a touch screen using liquid crystal.

5 is a configuration diagram of a command input unit provided in the integrated controller according to an embodiment of the present invention.

Referring to FIG. 5, the command input unit 270 included in the integrated controller may include an indoor lighting operation unit 271 for controlling the indoor lighting 420, a banner operation unit 272 for controlling the electric banner 430, and A curtain operation unit 273 for operating the electric curtain 440, a screen operation unit 274 for controlling the electric screen 450, an elevation operation unit 275 for controlling the electric elevator 460, PC operation unit 276 for controlling the operation of the PC, projector operation unit 277 for controlling the projector 410, lecture mode operation unit 278 for selecting the lecture mode, and operation of the VTR / DVD A VTR / DVD operation unit 279 is included.

In addition, an operation unit 1 for performing partial recovery, an operation unit 2 for performing a complete recovery, and a USB port 3 for connecting a separate keyboard or storage medium or communication device to the command input unit 270; 4) is provided.

Therefore, the lecturer can operate the indoor lighting operation unit 271 to turn on or off the indoor lighting. For example, when the lamp 1 is to be turned on, pressing the button labeled lamp 1 turns on the corresponding indoor lamp, and the indicator lamp provided in the indoor lamp operating unit 271 is turned on.

In addition, the lecturer may operate the banner operation unit 272 to raise or lower the electric banner 430.

In addition, the lecturer may operate the curtain operation unit 273 to open or close the electric curtain 440.

In addition, the lecturer may operate the screen operation unit 274 to control the electric screen 450 to raise, lower or stop the electric screen 450.

In addition, the lecturer may operate the elevator operation unit 275 to control the electric elevation 460 to raise or lower the electric elevation 460.

In addition, the lecturer may operate the PC operation unit 276 to turn on or reset the power of the PC 110.

In addition, the lecturer may operate the projector operator 277 to control the projector 410 to turn on or turn on the projector 410. In addition, the multimedia data to be projected through the projector 410 is selected. That is, it is possible to select whether to output RGB data or video data.

In addition, the lecturer operates the lecture mode operation unit 278 to select whether to use the PC 110, the notebook 120, the real imager 130, or the VTR / DVD 140. .

In addition, the lecturer can operate the VTR / DVD operation unit 279 to control the operations of the VTR and the DVD. That is, the power button can be turned on or off by pressing the power button, the playback mode can be set to VTR or DVD, and a CD or video tape can be ejected.

In addition, operations such as fast forward, play / pause, stop, rewind, etc. of the VTR / DVD can be operated, recording can be performed, and subtitles can be selected or selected if the video supports subtitles. Can also be.

The present invention has been described with reference to preferred embodiments and many specific variations. However, those skilled in the art will understand that many other embodiments other than those specifically described also fall within the spirit and scope of the invention.

According to the present invention, it is easy to install various multimedia devices required to perform a lecture in a lecture room, and the lecturer can perform integrated control of various devices for conducting the lecture in the classroom.

In addition, when the integrated controller is installed in the lecturer's lecture table, the lecturer can wirelessly communicate between the integrated controller installed in the lecture table and the set-top box even if the lecturer moves from place to place in the lecture table, allowing the lecturer to freely position the lecture in the classroom. You can change the course and proceed.

In addition, in the present invention, a wire is used between the device and the integrated controller for providing the multimedia data necessary for the lecture, and a wire is also used between the set-top box and the various devices for supporting the lecture connected to the set-top box. It is implemented through wireless communication between set-top boxes only.

In other words, by reducing the interval using wireless communication as much as possible, but by unifying the wireless communication between the integrated controller and the set-top box, each device to be controlled does not need to be equipped with a module for wireless communication, thereby reducing the cost. It is easy to expand the system because there is no need to install the wireless communication module even when expanding.

Claims (10)

An integrated controller connected via wired line with at least one of a PC, a notebook computer, a real imager, a VTR / DVD, and an electronic blackboard; Projector, indoor lighting, electric banner, electric curtain, electric screen, electric elevator at least one of the set-top box connected by wired communication method of at least one of PLC, IEEE1394, HPNA, RS 232, The integrated controller, A signal processor configured to process an MPEG signal or a video signal multimedia data inputted from the at least one first device to an MPEG encoded signal for ultra wideband (UWB) wireless transmission; A controller configured to generate a control signal for controlling an operation of the at least one second device connected to the set top box; And a wireless communication unit for wirelessly transmitting the multimedia data processed by the signal processing unit and the control signal of the control unit to the set top box using a UWB wireless communication method. The set top box, Receives the multimedia data and the control signal from the integrated controller using the UWB wireless communication method, and controls the operation of the selected device among the at least one second device according to the received control signal or the multimedia data to the device Lecture support system using wireless communication to output the. delete The method according to claim 1, wherein the integrated controller, And a display unit for displaying screen information for controlling the first device and the second device. delete delete The method according to claim 1, wherein the control unit, An input / output selection unit for selecting a device for receiving multimedia data from the at least one first device; A control command execution unit that executes a corresponding command when a control command for at least one second device connected to the set top box is input; And a display control unit configured to display an operation state of a corresponding device connected to the set-top box according to execution of the control command execution unit. delete The method of claim 1, wherein the set top box, A wireless communication unit performing wireless communication with the integrated controller; A network interface unit connected to the at least one second device via a wire; A signal processor configured to decode and process multimedia data of the first device received by the wireless communication unit; A memory for storing various information for controlling the second device; A lecture support system using a wireless communication including a control unit controlling a second device connected to the set top box via a wire in response to an input command or outputting multimedia data decoded by the signal processing unit to the second device; . delete delete

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