KR101691801B1 - Multi vision system - Google Patents

Abstract

A multivision system according to an embodiment of the present invention includes a plurality of image display devices for displaying a 3D image and a 3D image viewing device for generating a synchronization signal and transmitting the synchronization signal to the plurality of image display devices, And the plurality of image display devices display a plurality of view image constituting the 3D image based on the synchronization signal. Or a synchronizing signal generating unit for generating a synchronizing signal and a transmitting unit for transmitting the synchronizing signal to the plurality of video display devices and the 3D video viewing device, And controlling the synchronization signal of one of the video display devices to be transmitted to the 3D video viewing device.
According to another aspect of the present invention, there is provided a multi-vision system including a master image display device for generating and transmitting a synchronization signal, a slave image display device for receiving the synchronization signal, And a 3D image viewing device for opening and closing the left eye glass part and the right eye glass part based on the synchronization signal, wherein the master image display device and the slave image display device construct a 3D image based on the synchronization signal And a plurality of viewpoint images are displayed.
According to the present invention, a multivision system capable of viewing 3D images using a plurality of video display devices can be easily implemented, and a plurality of video display devices provided in the multivision system and 3D video viewing It is possible to prevent the signal interference and the noise influence of the apparatus and to view the 3D image more accurately and easily.

Description

Multi vision system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multivision system and an operation method thereof, and more particularly, to a multivision system and an operation method thereof that enable accurate and easy viewing of a 3D image.

A video display device is a device having a function of displaying an image that a user can view. The user can view the broadcast through the video display device. A video display device displays a broadcast selected by a user among broadcast signals transmitted from a broadcast station on a display. Currently, broadcasting is changing from analog broadcasting to digital broadcasting around the world.

Digital broadcasting refers to broadcasting in which digital video and audio signals are transmitted. Compared to analog broadcasting, digital broadcasting is strong against external noise and has a small data loss, is advantageous for error correction, has a high resolution, and provides a clear screen. Also, unlike analog broadcasting, digital broadcasting is capable of bidirectional service.

Also. In recent years, various studies on stereoscopic images have been conducted, and stereoscopic image technology has become increasingly common and practical in various other environments and technologies as well as computer graphics.

On the other hand, demand and supply of a video display device which realizes a very large screen without occupying a space is increasing. According to this tendency, a multi-vision system using various image display devices has been implemented and various applications have been made, and studies for accurate and easy stereoscopic image display are underway.

It is an object of the present invention to provide a multivision system and an operation method thereof that can accurately and easily view a 3D image.

It is another object of the present invention to provide a multivision system and a method of operating the multivision system that can prevent a signal interference and a noise of a plurality of video display devices provided in a multivision system to more accurately and easily view a 3D image have.

According to an aspect of the present invention, there is provided a multi-vision system including a plurality of image display devices for displaying a 3D image, a 3D image display device for generating a synchronization signal and transmitting the synchronization signal to the plurality of image display devices, Wherein the plurality of image display devices display a plurality of view-point images constituting a 3D image based on the synchronization signal.

According to another aspect of the present invention, there is provided a multi-vision system including a plurality of image display devices for displaying 3D images, a 3D image viewing device including a left eye glass part and a right eye glass part, And a transmitter for transmitting the synchronization signal to the plurality of video display devices and the 3D video watching device, wherein the plurality of video display devices display a plurality of viewpoint images constituting a 3D video based on the synchronization signal .

According to another aspect of the present invention, there is provided a multi-vision system including a master image display device for generating and transmitting a synchronization signal, a slave image display device for receiving the synchronization signal, And a 3D image viewing device for opening and closing the left eye glass part and the right eye glass part based on the synchronization signal, wherein the master image display device and the slave image display device construct a 3D image based on the synchronization signal And a plurality of viewpoint images are displayed.

According to another aspect of the present invention, there is provided a multi-vision system including a 3D image viewing apparatus including a plurality of image display devices, a left eye glass unit and a right eye glass unit for displaying 3D images, And a controller for controlling the synchronization signal of one of the plurality of video display devices to be transmitted to the 3D video viewing device based on the position of the 3D video viewing device.

According to the present invention, a multi-vision system capable of viewing a 3D image using a plurality of image display devices can be easily implemented.

In addition, it is possible to prevent signal interference and noise from a plurality of video display devices and a 3D video viewing apparatus provided in the multivision system, thereby enabling a 3D video to be viewed more accurately and easily.

1A through 1B are internal block diagrams of a multi-vision system according to an embodiment of the present invention.
2 is a diagram showing an example of a multi-vision system according to an embodiment of the present invention.
3 is an internal block diagram of an image display apparatus according to an embodiment of the present invention.
4 is an internal block diagram of the control unit of the video display device.
5 is a diagram illustrating an operation of a 3D image viewing apparatus according to a frame sequential format.
6 is a diagram showing an example of a 3D video signal format capable of implementing 3D video.
7 is a diagram illustrating various scaling methods of a 3D image signal according to an embodiment of the present invention.
FIG. 8 is a view showing a variation in depth of a 3D image or a 3D object according to an embodiment of the present invention.
FIG. 9 is a view illustrating a manner in which the depth of an image or the like is controlled according to an embodiment of the present invention.
10 is a diagram showing an example of a signal for a 3D video viewing apparatus.
11 is an internal block diagram of a 3D video viewing apparatus according to an embodiment of the present invention.
12 is a diagram referred to explain a 3D multi-vision system.
13 to 16 are views referred to explain a multi-vision system according to an embodiment of the present invention.

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

The suffix "module" and " part "for components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms "module" and "part" may be used interchangeably.

FIGS. 1A and 1B are internal block diagrams of a multi-vision system according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating an example of a multi-vision system according to an embodiment of the present invention.

The multivision control unit 10 controls the plurality of video display devices 100 included in the multivision system to output video and audio according to an input signal.

 The multivision control unit 10 may be configured to display and output video images to be output according to the positions of the video display devices arranged for the video and audio to be output, And to selectively output the audio of the corresponding channel.

Meanwhile, the input signal may be transmitted to the individual image display device through the multivision control unit 10 or directly to the individual image display device.

The multivision control unit 10 may include an interface unit 15 for receiving a broadcasting signal of a broadcasting station or receiving an input signal by being connected to an external device or an external network. The interface unit 15 is capable of transmitting and receiving data and signals to and from the plurality of video display devices 100.

The multivision control unit 10 includes a synchronization signal generation unit 13 for generating a synchronization signal for controlling a plurality of video display devices, a sensor unit 17 for sensing various information such as the position information of the 3D video display device, ). The control unit 11 may include a synchronization signal generation unit 13, an interface unit 15, and a sensor unit 17.

According to an embodiment of the present invention, the image display apparatus may further include a storage unit (not shown) for storing audio or video images to be output from the image display apparatuses, identification information (ID) of each image display apparatus, and the like.

Meanwhile, according to the embodiment, any one of the plurality of video display devices constituting the multi-vision system can be set to perform a master function.

Therefore, the control unit of the video display device performing the master function performs the function of the multi-vision control unit 10 and sets corresponding portions of the video or audio to be output to the other slave video display devices, it is possible to output a control signal to the slave image display apparatus.

The synchronous signal generating unit 13, the interface unit 15 and the sensor unit 17 included in the multivision control unit 10 may be separately included in at least one video display device of the individual video display devices, And may be included in a component that performs a similar function. For example, an interface unit capable of transmitting and receiving data and signals to and from another image display apparatus may be included in the network interface unit, the external device interface unit, and the user input interface unit. On the other hand, the interface unit can be divided into a transmitting unit for transmitting data and signals, and a receiving unit for receiving data and signals.

An image display device for constituting a multivision can be arranged and displayed in various ways.

2 (a) to 2 (c) show an example in which the arrangement of the video display devices 100a, 100b, 100c and 100d for constituting a multivision is 2x2.

2 (a) to 2 (d), all of the image display devices are disposed adjacent to each other. However, the image display devices may be spaced apart at a predetermined interval.

The image display apparatuses 100a, 100b, 100c and 100d constituting the multivision system can display the same image as shown in FIG. 2 (a) So that one video can be displayed as the whole multi-vision system.

2 (d) shows an example in which a plurality of video display devices are arranged in a line.

In this case, the multivision control unit 10 can identify the individual video display devices 100a, 100b, 100c, and 100d and allocate an image to be displayed for each of the video display devices 100a, 100b, 100c, and 100d.

Meanwhile, as shown in FIG. 2C, the image display apparatuses 100a, 100b, 100c, and 100d may display different images and simultaneously provide various images to the user.

In the meantime, although the multi-vision control unit 10 and the plurality of video display devices are independently connected to each other in FIG. 1A, a plurality of video display devices may be connected in a serial manner according to an embodiment.

For example, assuming that the image display apparatus is a multi-vision system arranged in a matrix form as shown in FIG. 2 (a) composed of two rows and two columns, the image display apparatus 100a in the first row, The video display device 100b of one row and two columns is connected to the video display device 100c of two rows and one column and the video display device 100c of two rows and one column is connected to the video display device 100b, And may be connected to the image display device 100d by a serial connection. In this case, the same one signal can be sequentially transmitted.

3 to 4 are internal block diagrams of an individual image display apparatus constituting a multivision system according to an embodiment of the present invention.

3, an image display apparatus 100 according to an exemplary embodiment of the present invention includes a tuner 110, a demodulator 120, an external device interface 130, a network interface 135, A user input interface unit 150, a control unit 170, a display 180, an audio output unit 185, a power supply unit 190, and a 3D image viewing device 195.

The tuner 110 selects a channel selected by the user or an RF broadcast signal corresponding to all previously stored channels among RF (Radio Frequency) broadcast signals received through the antenna. Also, the selected RF broadcast signal is converted into an intermediate frequency signal, a baseband image, or a voice signal.

For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF). If the selected RF broadcast signal is an analog broadcast signal, it is converted into an analog baseband image or voice signal (CVBS / SIF). That is, the tuner 110 can process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS / SIF) output from the tuner 110 can be directly input to the controller 170.

Also, the tuner 110 can receive RF carrier signals of a single carrier according to an Advanced Television System Committee (ATSC) scheme or RF carriers of a plurality of carriers according to a DVB (Digital Video Broadcasting) scheme.

In the present invention, the tuner 110 sequentially selects RF broadcast signals of all broadcast channels stored through a channel memory function among RF broadcast signals received through an antenna, and outputs the selected RF broadcast signals as an intermediate frequency signal, a baseband image, or a voice signal Can be converted.

The demodulator 120 receives the digital IF signal DIF converted by the tuner 110 and performs a demodulation operation.

For example, when the digital IF signal output from the tuner 110 is the ATSC scheme, the demodulator 120 performs an 8-VSB (8-Vestigal Side Band) demodulation. Also, the demodulation unit 120 may perform channel decoding. To this end, the demodulator 120 includes a trellis decoder, a de-interleaver, and a reed solomon decoder to perform trellis decoding, deinterleaving, Solomon decoding can be performed.

For example, when the digital IF signal output from the tuner 110 is a DVB scheme, the demodulator 120 performs COFDMA (Coded Orthogonal Frequency Division Modulation) demodulation. Also, the demodulation unit 120 may perform channel decoding. For this, the demodulator 120 may include a convolution decoder, a deinterleaver, and a reed-solomon decoder to perform convolutional decoding, deinterleaving, and reed solomon decoding.

The demodulation unit 120 may perform demodulation and channel decoding, and then output a stream signal TS. At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed. For example, the stream signal may be an MPEG-2 TS (Transport Stream) multiplexed with an MPEG-2 standard video signal, a Dolby AC-3 standard audio signal, or the like. Specifically, the MPEG-2 TS may include a header of 4 bytes and a payload of 184 bytes.

Meanwhile, the demodulating unit 120 may be separately provided according to the ATSC scheme and the DVB scheme. That is, it can be provided as an ATSC demodulation unit and a DVB demodulation unit.

The stream signal output from the demodulation unit 120 may be input to the controller 170. The control unit 170 performs demultiplexing, video / audio signal processing, and the like, and then outputs an image to the display 180 and outputs audio to the audio output unit 185.

The external device interface unit 130 can connect the external device and the video display device 100. [ To this end, the external device interface unit 130 may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The external device interface unit 130 can be connected to an external device such as a DVD (Digital Versatile Disk), a Blu ray, a game device, a camera, a camcorder, a computer (notebook) The external device interface unit 130 transmits external video, audio or data signals to the controller 170 of the video display device 100 through the connected external device. Also, the control unit 170 can output the processed video, audio, or data signal to the connected external device. To this end, the external device interface unit 130 may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The A / V input / output unit includes a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, an S-video terminal (analog), a DVI (Digital Visual Interface) terminal, an HDMI (High Definition Multimedia Interface) terminal, an RGB terminal, a D-SUB terminal, and the like.

The wireless communication unit can perform short-range wireless communication with other electronic devices. The video display device 100 is connected to other electronic devices in accordance with communication standards such as Bluetooth, Radio Frequency Identification (RFID), IrDA (Infrared Data Association), UWB (Ultra Wideband), ZigBee, Can be connected.

Also, the external device interface unit 130 may be connected to various set-top boxes via at least one of the various terminals described above to perform input / output operations with the set-top box.

The external device interface unit 130 can transmit and receive data and signals to and from the 3D image viewing apparatus 195 according to various communication methods such as a radio frequency (RF) communication method and an infrared (IR) communication method.

Meanwhile, the external device interface unit 130 may be divided into a transmitting unit for transmitting data and signals, and a receiving unit for receiving data and signals.

The network interface unit 135 provides an interface for connecting the video display device 100 to a wired / wireless network including the Internet network. The network interface unit 135 may include an Ethernet terminal and the like for connection with a wired network and may be a WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless) broadband), Wimax (World Interoperability for Microwave Access), and HSDPA (High Speed Downlink Packet Access) communication standards.

The network interface unit 135 can receive, via the network, contents or data provided by the Internet or a content provider or a network operator. That is, it can receive contents such as movies, advertisements, games, VOD, broadcasting signals, and the like, provided from a contents provider through a network. In addition, the update information and the update file of the firmware provided by the network operator can be received. It may also transmit data to the Internet or a content provider or network operator.

The network interface unit 135 is connected to, for example, an IP (Internet Protocol) TV and receives the processed video, audio or data signals from the settop box for IPTV to enable bidirectional communication, And can transmit the signals processed by the controller 170 to the IPTV set-top box.

Meanwhile, the IPTV may include ADSL-TV, VDSL-TV, FTTH-TV and the like depending on the type of the transmission network. The IPTV may include a TV over DSL, a video over DSL, a TV over IP BTV), and the like. In addition, IPTV may also mean an Internet TV capable of accessing the Internet, or a full browsing TV.

The storage unit 140 may store a program for each signal processing and control in the control unit 170 or may store the processed video, audio, or data signals.

In addition, the storage unit 140 may perform a function for temporarily storing video, audio, or data signals input to the external device interface unit 130. [ In addition, the storage unit 140 may store information on a predetermined broadcast channel through a channel memory function such as a channel map.

The storage unit 140 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory) RAM, ROM (EEPROM, etc.), and the like. The image display apparatus 100 can reproduce files (moving picture files, still picture files, music files, document files, etc.) stored in the storage unit 140 and provide them to users.

FIG. 3 shows an embodiment in which the storage unit 140 is provided separately from the control unit 170, but the scope of the present invention is not limited thereto. The storage unit 140 may be included in the controller 170.

The user input interface unit 150 transmits a signal input by the user to the control unit 170 or a signal from the control unit 170 to the user.

For example, the user input interface unit 150 may be configured to turn on / off the power, select the channel, and display the screen from the remote control device 200 according to various communication methods such as a radio frequency (RF) communication method and an infrared Or transmit a signal from the control unit 170 to the remote control device 200. The remote control device 200 may be connected to the remote control device 200 via a network.

For example, the user input interface unit 150 may transmit a user input signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a set value to the controller 170.

For example, the user input interface unit 150 may transmit a user input signal input from a sensor unit (not shown) that senses a gesture of a user to the control unit 170 or a signal from the control unit 170 It is possible to transmit it to the sensor unit (not shown). Here, the sensor unit (not shown) may include a touch sensor, an audio sensor, a position sensor, an operation sensor, and the like.

The control unit 170 demultiplexes the input stream or processes the demultiplexed signals through the tuner 110 or the demodulation unit 120 or the external device interface unit 130 to generate a signal for video or audio output Can be generated and output.

The video signal processed by the controller 170 may be input to the display 180 and displayed as an image corresponding to the video signal. Also, the image signal processed by the controller 170 may be input to the external output device through the external device interface unit 130.

The audio signal processed by the control unit 170 may be output to the audio output unit 185 as an audio signal. The audio signal processed by the controller 170 may be input to the external output device through the external device interface unit 130. [

Although not shown in FIG. 3, the controller 170 may include a demultiplexer, an image processor, and the like. This will be described later with reference to FIG.

In addition, the control unit 170 can control the overall operation in the video display device 100. [ For example, the controller 170 controls the tuner 110 to control the tuner 110 to select an RF broadcast corresponding to a channel selected by the user or a previously stored channel.

In addition, the controller 170 may control the image display apparatus 100 according to a user command or an internal program input through the user input interface unit 150.

For example, the controller 170 controls the tuner 110 to input a signal of a selected channel according to a predetermined channel selection command received through the user input interface unit 150. Then, video, audio, or data signals of the selected channel are processed. The control unit 170 may output the video or audio signal processed by the user through the display 180 or the audio output unit 185 together with the channel information selected by the user.

The control unit 170 may be connected to the external device interface unit 130 through an external device such as a camera or a camcorder through the external device interface unit 130 in accordance with the external device video playback command received through the user input interface unit 150. [ So that the video signal or the audio signal of the display unit 180 or the audio output unit 185 can be outputted.

Meanwhile, the control unit 170 may control the display 180 to display an image. For example, the broadcast image input through the tuner 110, the external input image input through the external device interface unit 130, the image input through the network interface unit 135, or the image stored in the storage unit 140 To be displayed on the display 180 can be controlled.

At this time, the image displayed on the display 180 may be a still image or a moving image, and may be a 2D image or a 3D image.

On the other hand, the controller 170 generates a 3D object for a predetermined object among the images displayed on the display 180, and displays the 3D object. For example, the object may be at least one of a connected web screen (newspaper, magazine, etc.), EPG (Electronic Program Guide), various menus, widgets, icons, still images, moving images, and text.

Such a 3D object may be processed to have a different depth than the image displayed on the display 180. [ Preferably, the 3D object may be processed to be projected relative to the image displayed on the display 180.

On the other hand, the control unit 170 recognizes the position of the user based on the image photographed from the photographing unit (not shown). For example, the distance (z-axis coordinate) between the user and the image display apparatus 100 can be grasped. In addition, the x-axis coordinate and the y-axis coordinate in the video display device 100 corresponding to the user position can be grasped.

Although not shown in the drawing, a channel browsing processing unit for generating a channel signal or a thumbnail image corresponding to an external input signal may be further provided. The channel browsing processing unit receives the stream signal TS output from the demodulation unit 120 or the stream signal output from the external device interface unit 130 and extracts an image from an input stream signal to generate a thumbnail image . The generated thumbnail image may be directly or encoded and input to the controller 170. In addition, the generated thumbnail image may be encoded in a stream format and input to the controller 170. The control unit 170 may display a thumbnail list having a plurality of thumbnail images on the display 180 using the input thumbnail image. At this time, the thumbnail list may be displayed in a simple view mode displayed on a partial area in a state where a predetermined image is displayed on the display 180, or in a full viewing mode displayed in most areas of the display 180.

The display 180 converts a video signal, a data signal, an OSD signal, a control signal processed by the control unit 170, a video signal, a data signal, a control signal, and the like received from the external device interface unit 130, .

The display 180 may be a PDP, an LCD, an OLED, a flexible display, or the like. In particular, according to an embodiment of the present invention, a three-dimensional display (3D display) is preferable.

The display 180 for viewing three-dimensional images can be divided into an additional display method and a single display method.

The single display method can realize a 3D image by the display 180 alone without a separate additional display, for example, glasses or the like. For example, various methods such as a lenticular method, a parallax barrier, Can be applied.

In addition, the additional display method can implement a 3D image using an additional display, that is, a 3D image viewing device in addition to the display 180. For example, various methods such as a head mount display (HMD) type and a glasses type can be applied have. In addition, the glasses type can be further divided into a passive type such as a polarizing glasses type and an active type such as a shutter glass type. On the other hand, head-mounted display type can be divided into a passive type and an active type.

In the practice of the present invention, a 3D video viewing device 195 is provided for viewing 3D video. It is assumed that the 3D video viewing apparatus 195 is an additional display of the active type among various types described above. Hereinafter, the shutter glass will be mainly described.

Meanwhile, the display 180 may be configured as a touch screen and used as an input device in addition to the output device.

The audio output unit 185 receives a signal processed by the control unit 170, for example, a stereo signal, a 3.1 channel signal, or a 5.1 channel signal, and outputs it as a voice. The audio output unit 185 may be implemented by various types of speakers.

In order to detect the gesture of the user, a sensor unit (not shown) having at least one of a touch sensor, a voice sensor, a position sensor, and an operation sensor may be further provided in the image display apparatus 100 have. The signal detected by the sensor unit (not shown) is transmitted to the controller 170 through the user input interface unit 150.

Meanwhile, the sensor unit may sense the position information of the 3D image viewing apparatus 195, and the position information of the 3D image viewing apparatus 195 may be detected by an external device interface unit transmitting and receiving data and signals, have.

The control unit 170 can detect the gesture of the user by combining the images captured from the photographing unit (not shown) or the signals detected from the sensor unit (not shown), respectively.

The power supply unit 190 supplies power to the entire image display apparatus 100. Particularly, it is possible to supply power to a control unit 170 that can be implemented in the form of a system on chip (SOC), a display 180 for displaying an image, and an audio output unit 185 for audio output have. Further, according to the embodiment, power can be supplied to the heat generating portion including the heat ray.

The remote control apparatus 200 transmits the user input to the user input interface unit 150. [ To this end, the remote control device 200 can use infrared (IR) communication, radio frequency (RF) communication, Bluetooth, ultra wideband (UWB), or ZigBee. Also, the remote control apparatus 200 can receive the video, audio, or data signal output from the user input interface unit 150 and display it or output it by the remote control apparatus 200.

The video display apparatus 100 described above can be applied to a digital broadcasting of ATSC system (8-VSB system), digital broadcasting of DVB-T system (COFDM system), digital broadcasting of ISDB-T system (BST-OFDM system) And a digital broadcasting receiver capable of receiving at least one of the digital broadcasting signals. In addition, as a portable type, digital terrestrial DMB broadcasting, satellite DMB broadcasting, ATSC-M / H broadcasting, DVB-H broadcasting (COFDM broadcasting), MediaFoward Link Only And a digital broadcasting receiver capable of receiving at least one of digital broadcasting and the like. It may also be a digital broadcast receiver for cable, satellite communications, or IPTV.

Meanwhile, the video display device described in the present specification can be applied to a TV set, a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player) .

Meanwhile, a block diagram of the image display apparatus 100 shown in FIG. 3 is a block diagram for an embodiment of the present invention. Each component of the block diagram may be integrated, added, or omitted according to the specifications of the image display apparatus 100 actually implemented. That is, two or more constituent elements may be combined into one constituent element, or one constituent element may be constituted by two or more constituent elements, if necessary. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and apparatuses do not limit the scope of the present invention.

FIG. 4 is an internal block diagram of the control unit of FIG. 3, and FIG. 5 is a diagram illustrating an operation of a shutter glass according to a frame sequential format of a 3D image format.

The control unit 170 includes a demultiplexing unit 210, an image processing unit 220, an OSD generating unit 240, a mixer 245, a frame rate converting unit 260, (250), and a formatter (260). A voice processing unit (not shown), and a data processing unit (not shown).

The demultiplexer 210 demultiplexes the input stream. For example, when an MPEG-2 TS is input, it can be demultiplexed into video, audio, and data signals, respectively. The stream signal input to the demultiplexer 210 may be a stream signal output from the tuner 110 or the demodulator 120 or the external device interface 130.

The image processing unit 220 may perform image processing of the demultiplexed image signal. To this end, the image processing unit 220 may include an image decoder 225 and a scaler 235.

The video decoder 225 decodes the demultiplexed video signal and the scaler 235 performs scaling so that the resolution of the decoded video signal can be output from the display 180.

The video decoder 225 may include a decoder of various standards.

For example, if the demultiplexed video signal is an MPEG-2 standard encoded 2D video signal, it can be decoded by an MPEG-2 decoder.

For example, if the demultiplexed 2D video signal is a video signal of the H.264 standard according to a DMB (Digital Multimedia Broadcasting) scheme or DVB-H, a depth video of MPEC-C part 3 Viewpoint video according to MVC (Multi-view Video Coding) or free-view video according to a TV (Free-viewpoint TV), it is decoded by an H.264 decoder, MPEC-C decoder, MVC decoder or FTV decoder, .

On the other hand, the image signal decoded by the image processing unit 220 can be divided into a case where there is only a 2D image signal, a case where a 2D image signal and a 3D image signal are mixed, and a case where there is only a 3D image signal.

Meanwhile, the image processing unit 220 can detect whether the demultiplexed image signal is a 2D image signal or a 3D image signal. Whether or not the 3D video signal is a 3D video signal can be detected based on a broadcast signal received from the tuner 110, an external input signal from an external device, or an external input signal received through a network. In particular, whether the 3D image signal is a 3D image signal is determined by referring to a 3D image flag, 3D image meta data, or format information of a 3D image in a header of a stream, It can be judged.

Meanwhile, the image signal decoded by the image processing unit 220 may be a 3D image signal of various formats. For example, a 3D image signal composed of a color image and a depth image, or a 3D image signal composed of a plurality of view image signals. The plurality of viewpoint image signals may include, for example, a left eye image signal and a right eye image signal.

Here, the format of the 3D video signal is a side-by-side format in which the left-eye video signal L and the right-eye video signal R are arranged left and right, a frame sequential format in which the right- An interlaced format in which a left eye image signal and a right eye image signal are mixed line by line, a checker box in which a left eye image signal and a right eye image signal are mixed box by box, Format, and the like.

The OSD generation unit 240 generates an OSD signal according to a user input or by itself. For example, based on a user input signal, a signal for displaying various information in a graphic or text form on the screen of the display 180 can be generated. The generated OSD signal may include various data such as a user interface screen of the video display device 100, various menu screens, a widget, and an icon. In addition, the generated OSD signal may include a 2D object or a 3D object.

The mixer 245 may mix the OSD signal generated by the OSD generator 240 and the decoded video signal processed by the image processor 220. At this time, the OSD signal and the decoded video signal may include at least one of a 2D signal and a 3D signal. The mixed video signal is supplied to a frame rate converter 250.

A frame rate converter (FRC) 250 converts a frame rate of an input image. For example, a frame rate of 60 Hz is converted to 120 Hz or 240 Hz. When converting the frame rate of 60 Hz to 120 Hz, it is possible to insert the same first frame between the first frame and the second frame, or insert the third frame predicted from the first frame and the second frame. When converting a frame rate of 60 Hz to 240 Hz, it is possible to insert three more identical frames or insert three predicted frames.

The formatter 260 receives the mixed signal, that is, the OSD signal and the decoded video signal in the mixer 245, and separates the 2D video signal and the 3D video signal.

In the present specification, the 3D video signal includes a 3D object. Examples of the 3D object include a picuture in picture (PIP) image (still image or moving picture), an EPG indicating broadcasting program information, various menus, widgets, Icons, texts, objects in images, people, backgrounds, web screens (newspapers, magazines, etc.).

On the other hand, the formatter 260 can change the format of the 3D video signal. For example, it may be changed to any of the various formats illustrated in FIG. Particularly, in the embodiment of the present invention, it is assumed that the frame sequential format is changed from the format of the 3D video signal. That is, the left eye image signal L and the right eye image signal R are alternately arranged in order. Accordingly, it is preferable that the 3D image viewing apparatus 195 of FIG. 3 is a shutter glass.

5 illustrates the operational relationship between the shutter glass 195 and the frame sequential format. 5A illustrates that the left eye glass portion of the shutter glass 195 closes and the right eye glass portion is closed when the left eye image L is displayed on the display 180. FIG. ) Is closed, and the right eye glass part is opened. That is, the left and right inner glass portions of the shutter glass 195 are opened and closed in synchronization with the image displayed on the screen.

The external device interface unit 130 can transmit and receive various data and signals to and from the shutter glass 195 according to various communication methods such as a radio frequency (RF) communication method and an infrared (IR) communication method.

Meanwhile, the formatter 260 may convert a 2D video signal into a 3D video signal. For example, according to a 3D image generation algorithm, an edge or a selectable object is detected in a 2D image signal, and an object or a selectable object according to the detected edge is separated into a 3D image signal and is generated . At this time, the generated 3D image signal can be separated into the left eye image signal L and the right eye image signal R as described above.

On the other hand, the audio processing unit (not shown) in the control unit 170 can perform the audio processing of the demultiplexed audio signal. To this end, the voice processing unit (not shown) may include various decoders.

For example, if the demultiplexed speech signal is a coded speech signal, it can be decoded. Specifically, when the demultiplexed speech signal is an MPEG-2 standard encoded speech signal, it can be decoded by an MPEG-2 decoder. In addition, if the demultiplexed speech signal is a coded voice signal of the MPEG 4 BSAC (Bit Sliced Arithmetic Coding) standard according to a terrestrial DMB (Digital Multimedia Broadcasting) scheme, it can be decoded by an MPEG 4 decoder. Also, if the demultiplexed speech signal is an encoded audio signal of the AAC (Advanced Audio Codec) standard of MPEG 2 according to the satellite DMB scheme or DVB-H, it can be decoded by the AAC decoder. If the demultiplexed speech signal is a Dolby AC-3 standard encoded audio signal, it can be decoded by an AC-3 decoder.

In addition, the audio processing unit (not shown) in the control unit 170 can process a base, a treble, a volume control, and the like.

The data processing unit (not shown) in the control unit 170 can perform data processing of the demultiplexed data signal. For example, if the demultiplexed data signal is a coded data signal, it can be decoded. The encoded data signal may be EPG (Electronic Program Guide) information including broadcast information such as a start time and an end time of a broadcast program broadcasted on each channel. For example, the EPG information may be ATSC-PSIP (ATSC-Program and System Information Protocol) information in the case of the ATSC scheme and DVB-Service Information (DVB-SI) information in case of the DVB scheme . The ATSC-PSIP information or DVB-SI information may be information included in the above-described stream, i.e., the header (4 bytes) of the MPEG-2 TS.

4 shows that the signals from the OSD generating unit 240 and the image processing unit 220 are mixed in the mixer 245 and then 3D processed in the formatter 260. However, May be located behind the formatter. That is, the output of the image processing unit 220 is 3D-processed by the formatter 260. The OSD generating unit 240 performs the 3D processing together with the OSD generation, and then the 3D signals processed by the mixer 245 are mixed It is also possible to do.

Meanwhile, the block diagram of the controller 170 shown in FIG. 4 is a block diagram for an embodiment of the present invention. Each component of the block diagram can be integrated, added, or omitted according to the specifications of the control unit 170 actually implemented.

Particularly, in some embodiments, the frame rate converter 250 and the formatter 260 are not provided in the controller 170, but may be separately provided. In some embodiments, the frame rate converter 250 may include a frame rate converter 250, (260).

6 is a diagram showing an example of a 3D video signal format capable of implementing 3D video. The 3D image signal format may be determined according to a method of arranging the left eye image and the right eye image generated to implement the 3D image.

The 3D image may be a multiple view image. The user can view the multiple view image through the left eye and the right eye. The user can feel the stereoscopic effect of the 3D image through the difference of the images detected through the left eye and the right eye. A multi-view image for implementing a 3D image is composed of a left eye image that the user can recognize through the left eye and a right eye image that can be recognized through the right eye according to an embodiment of the present invention.

As shown in FIG. 6A, the manner in which the left eye image and the right eye image are arranged left and right is referred to as a side by side format. As shown in FIG. 6B, a method of arranging the left eye image and the right eye image up and down is referred to as a top / down format. As shown in FIG. 6C, a method of arranging the left eye image and the right eye image in a time-division manner is called a frame sequential format. As shown in FIG. 6D, a method of mixing the left eye image and the right eye image line by line is referred to as an interlaced format. As shown in FIG. 6E, a method of mixing the left eye image and the right eye image by box is called a Checker Box format.

A video signal included in a signal input from the outside to the image display apparatus 100 may be a 3D image signal capable of implementing a 3D image. In addition, the graphic user interface video signal generated to display information related to the video display device 100 or to input a command related to the video display device 100 may be a 3D video signal. The formatter 260 may mix the 3D image signal included in the signal input from the outside to the image display apparatus 100 and the graphic user interface 3D image signal, and output the mixed image to the display 180.

7 is a diagram illustrating various scaling methods of a 3D image signal according to an embodiment of the present invention. See FIG. 5 for scaling or tilting the 3D object. Figure 7 illustrates scaling of various schemes of 3D video signals.

The 3D object 510 in the 3D image signal or the 3D image signal can be enlarged or reduced 513 as a whole at a certain rate as shown in FIG. 7 (a), and as shown in FIG. 7 (b) It may be partially enlarged or reduced (trapezoidal shape, 516). 7 (c), at least a part of the 3D object may be rotated (parallelogram shape 519). This scaling (size adjustment) or tilt adjustment can emphasize the 3D effect, i.e., the 3D effect, on the 3D object in the 3D image signal or the 3D image signal.

As described above, the increase in the slope is caused by the fact that the difference in length between the parallel sides of the trapezoidal shape 416 increases as shown in Fig. 7B, It can mean bigger.

Here, the scale adjustment of the 3D image signal may be performed by the formatter 260 of the control unit 170 described above. The 3D image signal of FIG. 7 may be a signal obtained by combining a left eye image signal, a right eye image signal, or a left eye image signal and a right eye image signal.

The formatter 260 receives the decoded video signal, separates the 2D video signal or the 3D video signal, and separates the 3D video signal into the left eye video signal and the right eye video signal again. The left eye image signal and the right eye image signal may be scaled into one or more of various examples shown in FIG. 7 and output in a predetermined format as shown in FIG. On the other hand, the scaling may be performed before or after the output format is formed.

The formatter 260 receives the OSD signal of the OSD generating unit 174 or the OSD signal mixed with the decoded video signal, separates the 3D video signal, and separates the 3D video signal into a plurality of viewpoint video signals . For example, the 3D image signal may be separated into a left eye image signal and a right eye image signal, and the separated left eye image signal and right eye image signal may be scaled as shown in FIG. 7 and output in a predetermined format shown in FIG. 6 .

Meanwhile, the OSD generation unit 240 can directly perform the above-described scaling process with respect to the OSD output. When the OSD generating unit 240 directly performs scaling on the OSD, the formatter 260 does not need to perform scaling on the OSD. In this case, the OSD generating unit 240 not only generates the OSD signal, but scales the OSD signal according to the depth or inclination of the OSD, and further outputs the OSD signal in a suitable format. The format of the OSD signal output from the OSD generating unit 240 may be any one of various formats of the left eye image signal, the right eye image signal, or the left eye image and the right eye image, as shown in FIG. At this time, the output format is the same as the output format of the formatter 260.

FIG. 8 is a view showing a variation in depth of a 3D image or a 3D object according to an embodiment of the present invention.

According to the embodiment of the present invention described above, the 3D image is composed of multi-view images, and the multi-view image can be exemplified as the left eye image and the right eye image. In this case, FIG. 8 shows a situation in which the positions recognized as images by the user are changed according to the interval between the left eye image and the right eye image. Referring to FIG. 8, the three-dimensional sensation or the perspective sensation of the image to be felt by the user according to the interval or parallax between the left eye image and the right eye image will be described.

In Fig. 8, a plurality of images or a plurality of objects having different depths are shown. These objects are referred to as a first object 615, a second object 625, a third object 635, and a fourth object 645.

That is, the first object 615 is composed of a first left eye image based on the first left eye image signal and a first right eye image based on the first right eye image signal. That is, the video signal for displaying the first object is composed of the first left eye image signal and the first right eye image signal. 8 shows the position of the display 180 on which the first left eye image based on the first left eye image signal and the first right eye image based on the first right eye image signal are displayed. 8 shows an interval between the first left-eye image and the first right-eye image displayed on the display 180. FIG. The description of the first object may be applied to the second to fourth objects. Hereinafter, for convenience of explanation, the left eye image and the right eye image displayed on the display 180 for one object, the interval set between the two images, and the serial number of the object will be described in unison.

The first object 615 is composed of a first right eye image 613 (indicated by R1 in Fig. 8) and a first left eye image 611 (indicated by L1 in Fig. 8). The interval between the first right eye image 613 and the first left eye image 611 is set to d1. The user recognizes that an image is formed at an intersection of an extension line connecting the left eye 601 and the first left eye image 611 and an extension line connecting the right eye 603 and the first right eye image 603. Accordingly, the user recognizes that the first object 615 is positioned behind the display 180. [ The distance between the display 180 and the first object 615, which is perceived by the user, can be expressed as a depth. In the present embodiment, the depth of the 3D object recognized by the user, which is located behind the display 180, has a negative value (-). Therefore, the depth of the first object 615 has a negative value.

The second object 625 is composed of a second right eye image 623 (represented by R2) and a second left eye image 621 (represented by L2). The second right-eye image 623 and the second left-eye image 621 are displayed at the same position on the display 180 according to the present embodiment. The interval between the second right eye image 623 and the second left eye image 621 is zero. The user recognizes that an extension line connecting the left eye 601 and the second left eye image 621 and an extension line connecting the right eye 603 of the user and the second right eye image 623 intersect with each other. Thus, the user recognizes the second object 625 as if it were displayed on the display 180. In this case, the second object 625 may be referred to as a 2D object and may be referred to as a 3D object. The second object 625 is an object having the same depth as the display 180, and the depth of the second object 625 is zero.

The third object 635 and the fourth object 645 are examples for explaining 3D objects recognized as being projected and positioned toward the user on the display 180. Furthermore, it is possible to explain that the degree of perspective or stereoscopic feeling perceived by the user varies with the change in the interval between the left eye image and the right eye image, with reference to examples of the third object 635 and the fourth object 645.

The third object 635 is composed of a third right eye image 633 (represented by R3) and a third left eye image (represented by 631 and L3). And the interval between the third right eye image 633 and the third left eye image 631 is set to d3. The user recognizes that an image is formed at an intersection of an extension line connecting the left eye 601 and the third left eye image 631 and an extension line of the right eye 603 and the third right eye image 633. Accordingly, the user recognizes that the third object 625 is positioned ahead of the display 180, i.e., nearer to the user. That is, the third object 635 is recognized by the user as if the third object 635 is projected from the display 180 toward the user. In this embodiment, the depth of the 3D object recognized by the user as being located ahead of the display 180 has a positive value (+). Thus, the depth of the third object 635 has a positive value.

The fourth object 645 is composed of a fourth right eye image 643 (represented by R4) and a fourth left eye image (represented by 641 and L4). And the interval between the fourth right eye image 643 and the fourth left eye image 641 is set to d4. Here, an inequality of 'd3 <d4' is established between d3 and d4. The user recognizes that an image is formed at an intersection of an extension line connecting the left eye 601 and the fourth left eye image 641 and an extension line of the right eye 603 and the fourth right eye image 643. Accordingly, the user recognizes that the fourth object 645 is positioned closer to the user than the third object 635, as well as located in front of the display 180, i.e., closer to the user. That is, the fourth object 645 is perceived by the user as if it is projected toward the user than the display 180 and the third object 635. The fourth object 645 has a depth amount value.

The image display apparatus 100 controls the positions of the left eye image and the right eye image displayed on the display 180 so that the user is recognized or positioned as if the object composed of the left eye image and the right eye image are positioned behind the display 180 To be recognized by the user. In addition, the image display apparatus 100 can control the depth sense of the object composed of the left eye image and the right eye image by adjusting the display intervals of the left eye image and the right eye image displayed on the display 180.

That is, according to the description with reference to FIG. 8, it is determined whether the depth of an object composed of a left eye image and a right eye image has a positive value or a negative value (-) according to the left and right display positions of the left eye image and the right eye image Is determined. As described above, an object having a positive value (+) in depth is an object recognized by the user as if it is projected from the display 180. Also, an object whose depth has a negative value (-) is an object that is recognized by the user as if it were located behind the display 180.

Referring to FIG. 8, it is explained that the depth of the object, that is, the distance between the point at which the user is perceived as the 3D image is located, and the display 180 varies according to the absolute value of the interval between the left eye image and the right eye image .

9 is a view illustrating a manner in which a depth of a video image is controlled according to an embodiment of the present invention. Referring to FIG. 9, the depth of the same image or the same 3D object changes depending on the interval between the left eye image 701 and the right eye image 702 displayed on the display 180. In this embodiment, the depth of the display 180 is set to zero. The depth of the image recognized as being projected from the display 180 is set to have a positive value.

An interval between the left eye image 701 and the right eye image 702 shown in FIG. 9A is a. The interval between the left eye image 701 and the right eye image 702 shown in (b) of FIG. 9 is b. Where b is greater than a. That is, the interval between the left eye image 701 and the right eye image 702 in the example shown in FIG. 9 (b) is wider than the example shown in FIG. 9 (a).

In this case, as described with reference to Fig. 8, the depth feeling of the 3D image or 3D object shown in Fig. 9 (b) is greater than the depth feeling of the 3D image or 3D object shown in Fig. 9 . In each case, when the depth sense is expressed numerically and denoted by a 'and b', respectively, it can be understood that the relationship of a '<b' is also established according to the relation of a <b. That is, when it is desired to implement a 3D image which is seen as a protruding, the depth feeling expressed by the widening or narrowing of the interval between the left eye image 701 and the right eye image 702 may become larger or smaller.

10 is a diagram showing an example of a signal for a 3D video viewing apparatus. An example of a driving signal of the 3D image viewing apparatus 195 generated based on a synchronizing signal and a synchronizing signal having synchronization information in an image displayed on a video display device is shown in more detail.

FIG. 10 shows an example of a synchronizing signal and a driving signal when a synchronizing signal is normally received.

Referring to FIG. 10 (a), the 3D image viewing apparatus 195 may receive a synchronization signal having synchronization information in an image displayed on the image display device at a predetermined period. Since the synchronizing signal is normally received without interference or noise, the driving signals of the left and right eyeglass portions are normally generated normally as shown in Fig. 10 (b). In the region indicated by L, the left eye glass portion is opened, and in the region indicated by R, the right eye glass portion is opened.

11 is an internal block diagram of a 3D video viewing apparatus according to an embodiment of the present invention.

Referring to the drawings, a 3D image viewing apparatus according to an embodiment of the present invention includes a left and right eyeglass unit 830, an interface unit 810 for receiving at least one of a synchronizing signal and a driving signal from an image display apparatus, And a control unit 820 for generating a driving signal based on the synchronization signal or controlling the opening and closing operations of the left and right eyeglass unit 830 based on the received driving signal.

The interface unit 810 receives a signal transmitted from the image display apparatus or the multivision control unit, and the control unit 820 outputs the received signal to the left and right eyeglass unit 830 or, based on the received signal, Can be converted into a driving signal for controlling the lens unit 831 and the right eye glass unit 832. FIG.

Although not shown in the drawings, it may further include a mux for signal processing, and a frequency converter for varying the frequency and period of various signals. The left and right eyeglass portions 830 are finally turned on and off, that is, opened and closed according to the driving signals.

When the left eye image L is displayed on the display module 180, the left eye image signal L and the right eye image signal R can be alternately arranged, And the right eye glass portion 832 is closed. When the right eye image R is displayed, the left eye glass portion 831 is closed and the right eye glass portion 832 is opened. That is, the opening and closing operations of the left and right eyeglass portions 830 can be synchronized with the image displayed by the image display device.

The synchronization signal may be a signal synchronized with an image displayed on the image display device. A vertical synchronization signal Vsync, a signal synchronized with the left and right view images displayed on the image display device, or a signal modified to be more efficient in transmission.

12 is a diagram referred to explain a 3D multi-vision system.

In the case of constructing a 3D multi-vision system using a plurality of active (3D) image display devices using, for example, shutter glasses, a plurality of synchronization signals are received from a plurality of IR transmitters (IR emitters) Lt; / RTI &gt;

In the case of the active system, a 3D image display apparatus, for example, a 3D TV and a 3D image viewing apparatus 195 transmit / receive a one-to-one type infrared IR signal. Alternatively, when the number of viewers is n, a signal is transmitted / received in 1: n manner.

The 3D image viewing apparatus 195 may receive a plurality of infrared synchronization signals and cause malfunctions. As shown in FIG. 12, when a multi-vision system is configured with four 3D image display devices, four infrared image signals are transmitted from a plurality of 3D image display devices.

The 3D image viewing apparatus 195 may determine that the input noise component or the four synchronizing signals are all valid synchronizing signals, and an incorrect driving signal may be generated. Accordingly, the user can not smoothly view the 3D image due to the opening / closing operation of the right eye glass in the section where the left eye image is displayed for at least one image display device or the frequent opening / closing operation.

The 3D image viewing apparatus generates driving signals for opening and closing the left eye glass unit and the right eye glass unit, which perform opening and closing operations corresponding to the four synchronizing signals. For example, one image display apparatus displays a left eye image frame, and another image display apparatus can be switched to a right eye image frame and displayed. The 3D image viewing apparatus synchronizes with the image display apparatus switched to the right eye image frame, The glass portion can be opened. However, since the other image display apparatus displays the left eye image frame, the 3D image can not be smoothly viewed. Alternatively, even if the switching of the image is exactly matched, the driving signal is erroneously generated even when the synchronous signal is inconsistent with the transmission environment or noise input, and the 3D image can not be smoothly watched.

13 to 16 are views referred to explain a multi-vision system according to an embodiment of the present invention.

A multivision system according to an embodiment of the present invention includes a plurality of image display devices for displaying a 3D image and a 3D image viewing device for generating a synchronization signal and transmitting the synchronization signal to the plurality of image display devices, And the plurality of image display devices display a plurality of view image constituting the 3D image based on the synchronization signal.

As shown in FIG. 13, a synchronizing signal may be generated in the viewer's 3D image viewing apparatus 195 and transmitted to a plurality of image display apparatuses to synchronize a plurality of 3D images. That is, the image display apparatus can display an image on the basis of the synchronizing signal of the 3D image viewing apparatus, instead of performing the opening and closing operations of the glass unit according to the synchronizing signals of the plurality of image display apparatuses.

On the other hand, the 3D image viewing apparatus 195 can generate a driving signal based on the synchronization signal, and can open and close the left eye glass unit and the right eye glass unit.

On the other hand, the 3D image viewing apparatus 195 can transmit the synchronization signal as an IR infrared signal.

Meanwhile, the 3D image viewing apparatus 195 may include a synchronous signal generating unit for generating the synchronous signal and a transmitting unit for transmitting the synchronous signal. More specifically, the interface unit 810 of the 3D video viewing apparatus described with reference to FIG. 11 includes only a receiving unit for receiving signals and data, but includes a transmitting unit in the present embodiment.

In the embodiment described with reference to FIG. 1B, the synchronization signal generation unit is included in the multi-vision control unit 10, and in some embodiments, the synchronization signal generation unit may be included in at least one of the plurality of video display devices.

13, the synchronization signal generating unit is included in the 3D image viewing apparatus 195, and the synchronization signal generated in the 3D image viewing apparatus 195 is transmitted to a plurality of image display apparatuses constituting the multivision system.

In addition, the plurality of video display devices may include an interface unit capable of transmitting and receiving data and signals, and the interface unit for the 3D video viewing device may be separately provided, or may be included in an external device interface unit and a user input interface unit. Meanwhile, the interface unit can be divided into a transmitting unit for transmitting data and signals, and a receiving unit for receiving data and signals, and the receiving unit can receive the synchronization signal.

As shown in FIGS. 1A, 1B, and 14, the multi-vision system according to another embodiment of the present invention includes a plurality of image display devices for displaying 3D images, a 3D image viewing device including a left eye glass part and a right eye glass part, And a transmission unit for transmitting the synchronization signal to the plurality of video display devices and the 3D video viewing device, wherein the plurality of video display devices constitute a 3D video based on the synchronization signal View-point image is displayed.

That is, the image display apparatus and the 3D image viewing apparatus are provided separately from the synchronizing signal generating section 13 and the transmitting section for transmitting the synchronizing signal, and transmitted to the plurality of image display apparatuses and the 3D image viewing apparatuses.

Meanwhile, the transmission unit may transmit the synchronization signal as an IR infrared signal.

On the other hand, the 3D image viewing apparatus 195 can generate a driving signal based on the synchronization signal, and can open and close the left eye glass unit and the right eye glass unit, and the 3D image viewing apparatus 195 can receive the synchronization signal .

 15, a multi-vision system according to another embodiment of the present invention includes a master image display device 100e for generating and transmitting a synchronization signal, a slave image display device 100f for receiving the synchronization signal, And a 3D image viewing device for receiving the synchronization signal and opening and closing the left eye glass part and the right eye glass part based on the synchronization signal, wherein the master image display device and the slave image display device View image constituting the 3D image is displayed.

That is, any one of the plurality of video display devices 100e constituting the multivision system may be set to perform a master function.

Accordingly, the control unit of the image display device performing the master function can perform the function of the multi-vision control unit 10, and can output the control signal and the synchronization signal to the other slave image display device.

The synchronizing signal generating unit 13, the interface unit 15 and the sensor unit 17 included in the multivision control unit 10 of FIG. 1B may be separately included in at least one of the image display apparatuses , And may be included in components that perform the same or similar functions. For example, an interface unit capable of transmitting and receiving data and signals to and from another video display device may be included in the external device interface unit and the user input interface unit. Meanwhile, the interface unit may be divided into a transmitting unit for transmitting data and signals, and a receiving unit for receiving data and signals.

The master image display apparatus may transmit the synchronization signal to the 3D image viewing apparatus as an IR signal, and the slave image display apparatus may include a receiver for receiving the synchronization signal .

Also, the master video display device and the slave video display device may be connected to a wired / wireless network.

On the other hand, the 3D image viewing apparatus 195 can generate a driving signal based on the synchronization signal, and can open and close the left eye glass unit and the right eye glass unit, and the 3D image viewing apparatus 195 can receive the synchronization signal .

As shown in FIG. 16, the multi-vision system according to another embodiment of the present invention includes a 3D image viewing apparatus including a plurality of image display devices, a left eye glass unit and a right eye glass unit for displaying 3D images, And a controller for controlling the synchronization signal of one of the plurality of video display devices to be transmitted to the 3D video viewing device based on the position of the 3D video viewing device.

In this case, when the 3D video viewing apparatus moves, the video display apparatus automatically synchronized can be handed off.

The plurality of video display devices may include a synchronization signal generator for generating the synchronization signal and a transmitter for transmitting the synchronization signal.

The control unit may control the synchronization signal of the image display device located closest to the 3D image viewing device to be transmitted to the 3D image viewing device. The synchronization signal transmission of the image display device located at the nearest distance is the fastest and the possibility of the noise input in the transmission process is the smallest.

Alternatively, the control unit may set the transmission areas (z1, z2, z3, z4) for each of the plurality of video display devices, and output the synchronizing signal of the video display device corresponding to the transmission area including the position of the 3D video- To the 3D video viewing apparatus. At this time, the transmission areas (z1, z2, z3, z4) are too wide to cause interference or too narrow to prevent signal reception from being disconnected.

Meanwhile, the sensor unit may also detect position information of the 3D image viewing apparatus 195, and the sensor unit may include a camera.

On the other hand, the position information of the 3D image viewing apparatus 195 may be sensed by an external device interface unit transmitting and receiving data and signals according to an embodiment.

FIG. 16 shows that the embodiments applied to the multi-vision system in which the image display apparatuses are arranged in the matrix form of FIGS. 13 to 15 can be applied to the multi-vision system in which a plurality of image display apparatuses are arranged in a line.

According to the present invention, a multi-vision system capable of viewing a 3D image using a plurality of image display devices can be easily implemented. In addition, it is possible to prevent signal interference and noise from a plurality of video display devices and a 3D video viewing apparatus provided in the multivision system, thereby enabling a 3D video to be viewed more accurately and easily.

The multivision system and its operation method according to the present invention are not limited to the configuration and method of the embodiments described above, but the embodiments can be applied to all or some of the embodiments May be selectively combined.

Meanwhile, the operation method of the multivision system of the present invention can be implemented as a code that can be read by a processor in a processor-readable recording medium provided in a video display device. The processor-readable recording medium includes all kinds of recording apparatuses in which data that can be read by the processor is stored. Examples of the recording medium that can be read by the processor include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet . In addition, the processor-readable recording medium may be distributed over network-connected computer systems so that code readable by the processor in a distributed fashion can be stored and executed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

Claims (20)

A plurality of image display devices for displaying 3D images; And
And a 3D image viewing apparatus for generating a synchronization signal for controlling the plurality of image display apparatuses displaying the 3D image and transmitting the synchronization signal to the plurality of image display apparatuses,
Wherein the plurality of image display devices display a plurality of view-point images constituting a 3D image based on the synchronization signal. The method according to claim 1,
Wherein the 3D image viewing apparatus opens and closes the left eye glass unit and the right eye glass unit based on the synchronization signal. The method according to claim 1,
Wherein the 3D video viewing apparatus transmits the synchronization signal as an IR signal. The method according to claim 1,
Wherein the 3D video viewing apparatus comprises: a synchronization signal generator for generating the synchronization signal; and a transmitter for transmitting the synchronization signal. The method according to claim 1,
And the plurality of image display devices include a receiver for receiving the synchronization signal. delete delete delete delete delete A master image display device for generating a synchronization signal and transmitting the generated synchronization signal to another image display device constituting the multivision system;
A slave image display device for receiving the synchronization signal; And
And a 3D image viewing apparatus for receiving the synchronization signal and opening and closing the left eye glass unit and the right eye glass unit based on the synchronization signal,
Wherein the master image display device and the slave image display device display a plurality of view image constituting a 3D image based on the synchronization signal. 12. The method of claim 11,
Wherein the master video display device transmits the synchronization signal as an IR signal to the 3D video viewing device. 12. The method of claim 11,
Wherein the master video display device and the slave video display device are connected to each other via a wired / wireless network. 12. The method of claim 11,
And the 3D video viewing apparatus includes a receiver for receiving the synchronization signal. 12. The method of claim 11,
And the slave image display device includes a receiver for receiving the synchronization signal. A plurality of image display devices for displaying 3D images;
A 3D image viewing device including a left eye glass part and a right eye glass part;
A sensor unit for sensing a position of the 3D image viewing apparatus; And
And a controller for controlling the synchronization signal of one of the plurality of video display devices to be transmitted to the 3D video viewing device based on the position of the 3D video viewing device,
Wherein the image display device synchronized with the 3D image viewing device is automatically changed when the 3D image viewing device moves. 17. The method of claim 16,
Wherein the control unit controls to transmit a synchronization signal of an image display device located closest to the 3D image viewing device to the 3D image viewing device. 17. The method of claim 16,
The control unit sets a transmission area for each of the plurality of video display devices and controls the synchronization signal of the video display device corresponding to the transmission area including the detected position of the 3D video viewing device to be transmitted to the 3D video viewing device Wherein the multi-vision system comprises: 17. The method of claim 16,
Wherein the sensor unit comprises a camera. 17. The method of claim 16,
Wherein the plurality of image display apparatuses include a synchronization signal generation unit for generating the synchronization signal, and a transmission unit for transmitting the synchronization signal.

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