KR20110137615A - Apparatus for viewing 3d image and method for operating the same - Google Patents

Abstract

PURPOSE: A three-dimensional video viewing apparatus and operation method thereof are provided to prevent the discomfort of a user according to the shutter operation of an unnecessary video viewing apparatus. CONSTITUTION: A communication unit(510) receives a three-dimensional synchronization signal from a video display device. The video display reproduces a three-dimensional image. In case the three-dimensional synchronization signal is detected, a controlling unit(520) determines reproduced content in the three-dimensional image. The controlling unit generates a shutter driving signal. A glass unit(530) includes a left eye glass unit(531) and a right eye glass unit(532).

Description

Apparatus for viewing 3D image and method for operating the same}

The present invention relates to a 3D image viewing apparatus and an operation method thereof, and more particularly, to a 3D image viewing apparatus and an operation method thereof, which can reduce power consumption due to unnecessary shutter driving.

The image display device is a device having a function of displaying an image that a user can watch. The user can watch the broadcast through the image 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 shifting from analog broadcasting to digital broadcasting worldwide.

Digital broadcasting refers to broadcasting for transmitting digital video and audio signals. Digital broadcasting is more resistant to external noise than analog broadcasting, so it has less data loss, is advantageous for error correction, has a higher resolution, and provides a clearer picture. In addition, unlike analog broadcasting, digital broadcasting is capable of bidirectional services.

Also. Recently, various researches on stereoscopic images have been conducted, and stereoscopic imaging techniques are becoming more and more common and practical in computer graphics as well as in various other environments and technologies. Also. There is also an increasing number of studies on the image viewing apparatus capable of viewing stereoscopic images.

An object of the present invention is to provide a 3D image viewing apparatus and an operation method thereof that can reduce unnecessary power consumption through shutter control.

According to an aspect of the present invention, a 3D image viewing apparatus is a 3D image viewing apparatus connected to an image display apparatus capable of displaying a 3D image, and receives a 3D synchronization signal from an image display apparatus that reproduces a 3D image. A communication unit configured to determine that the content being played on the video display device is a 3D image, a controller configured to generate a shutter driving signal, and a left eye glass unit and a right eye glass unit which are opened and closed according to the shutter driving signal. It includes a glass portion to be.

In addition, a method of operating a 3D image viewing apparatus according to another aspect of the present invention for achieving the above object relates to a 3D image viewing apparatus connected to an image display apparatus capable of displaying a 3D image, an image display apparatus for reproducing a 3D image Detecting a 3D synchronization signal from the camera; determining that the content being played on the video display device is a 3D image; generating a shutter driving signal; and left eye glasses according to the shutter driving signal. And opening and closing the portion and the right eye glass portion.

According to an embodiment of the present invention, the 3D image viewing apparatus may detect whether 3D content is being played on the image display device, and may drive the shutter only when 3D content is being played back. Therefore, it is possible to prevent user inconvenience and unnecessary waste of power of the 3D image viewing apparatus due to unnecessary shutter driving of the 3D image viewing apparatus during 2D content reproduction.

1 is an internal block diagram of an image display apparatus according to an embodiment of the present invention.
FIG. 2 is an internal block diagram of the controller of FIG. 1. FIG.
3 shows various formats of 3D video.
FIG. 4 is a diagram illustrating an operation of a 3D image viewing apparatus according to the frame sequential format of FIG. 3. FIG.
5 is an internal block diagram of a 3D image viewing apparatus according to an embodiment of the present invention.
6 is a flowchart illustrating a method of operating a 3D image viewing apparatus according to an embodiment of the present invention.
7 is a flowchart illustrating a method of operating a 3D image viewing apparatus according to another embodiment of the present invention.
8 is a flowchart illustrating a method of operating an image display apparatus connected to a 3D image viewing apparatus according to an exemplary embodiment of the present invention.

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

The suffixes "module" and "unit" for components used in the following description are merely given in consideration of ease of preparation of the present specification, and do not impart any particular meaning or role by themselves. Therefore, the "module" and "unit" may be used interchangeably.

1 to 2 are internal block diagrams of an image display apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the image display apparatus 100 according to an exemplary embodiment of the present invention includes a tuner 110, a demodulator 120, an external device interface unit 130, a network interface unit 135, and a storage unit ( 140, a user input interface unit 150, a controller 170, a display 180, an audio output unit 185, a power supply unit 190, and a 3D image viewing apparatus 195.

The tuner 110 selects an RF broadcast signal corresponding to a channel selected by a user or all pre-stored channels among RF (Radio Frequency) broadcast signals received through an 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 may process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal CVBS / SIF output from the tuner 110 may 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.

Meanwhile, 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 converts them into intermediate frequency signals or baseband video or audio signals. I can convert it.

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. To this end, the demodulator 120 may include a convolutional decoder, a deinterleaver, a reed-soloman decoder, and the like to perform convolutional decoding, deinterleaving, and reed-soloman decoding.

The demodulation unit 120 may perform demodulation and channel decoding, and then output a stream signal TS. In this case, the stream signal may be a signal multiplexed with a video signal, an audio signal, or a data signal. 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.

On the other hand, the demodulator 120 described above can be provided separately according to the ATSC system and the DVB system. That is, it can be provided as an ATSC demodulation unit and a DVB demodulation unit.

The stream signal output from the demodulator 120 may be input to the controller 170. After performing demultiplexing, image / audio signal processing, and the like, the controller 170 outputs an image to the display 180 and outputs audio to the audio output unit 185.

The external device interface unit 130 may connect the external device to the image 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 may be connected to an external device such as a digital versatile disk (DVD), a Blu-ray, a game device, a camera, a camcorder, a computer (laptop), or the like by wire / wireless. The external device interface unit 130 transmits an image, audio or data signal input from the outside to the controller 170 of the image display device 100 through a connected external device. In addition, the controller 170 may output an image, audio, or data signal processed by the controller 170 to a 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), and a DVI so that video and audio signals of an external device can be input to the video display device 100. (Digital Visual Interface) terminal, HDMI (High Definition Multimedia Interface) terminal, RGB terminal, D-SUB terminal and the like.

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

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

Meanwhile, the external device interface unit 130 may transmit / receive data with the 3D image viewing device 195.

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

The network interface unit 135 may receive content or data provided by the Internet or a content provider or a network operator through a network. That is, content such as a movie, an advertisement, a game, a VOD, a broadcast signal, and related information provided from a content provider may be received 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 content provider or network operator.

In addition, the network interface unit 135 is connected to, for example, an Internet Protocol (IP) TV, and receives the video, audio, or data signals processed in the set-top box for the IPTV to enable bidirectional communication. The signal processed by the controller 170 may be transmitted to the set-top box for the IPTV.

Meanwhile, the above-described IPTV may mean ADSL-TV, VDSL-TV, FTTH-TV, etc. according to the type of transmission network, and include TV over DSL, Video over DSL, TV overIP (TVIP), and Broadband TV ( 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 140 may store a program for processing and controlling each signal in the controller 170, or may store a signal-processed video, audio, or data signal.

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

The storage unit 140 may include a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), It may include at least one type of storage medium such as RAM, ROM (EEPROM, etc.). The image display apparatus 100 may reproduce and provide a file (video file, still image file, music file, document file, etc.) stored in the storage 140 to a user.

1 illustrates 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 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 powered on / off, channel selection, and screen from the remote controller 200 according to various communication methods such as a radio frequency (RF) communication method and an infrared (IR) communication method. A user input signal such as a setting may be received, or a signal from the controller 170 may be transmitted to the remote controller 200.

In addition, 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.

In addition, for example, the user input interface unit 150 may transmit a user input signal input from a sensing unit (not shown) that senses a user's gesture to the controller 170 or may transmit a signal from the controller 170. The transmission may be transmitted to a sensing unit (not shown). Here, the sensing unit (not shown) may include a touch sensor, an audio sensor, a position sensor, an operation sensor, and the like.

The controller 170 demultiplexes the input stream or processes the demultiplexed signals through the tuner 110, the demodulator 120, or the external device interface unit 130, and outputs a video or audio signal. You can create and output.

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

The voice signal processed by the controller 170 may be sound output to the audio output unit 185. In addition, the voice 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. 1, the controller 170 may include a demultiplexer, an image processor, and the like. This will be described later with reference to FIG. 2.

In addition, the controller 170 may control overall operations of the image display apparatus 100. For example, the controller 170 may control the tuner 110 to control the tuner 110 to select an RF broadcast corresponding to a channel selected by a user or a pre-stored channel.

In addition, the controller 170 may control the image display apparatus 100 by 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 controller 170 may output the channel information selected by the user together with the processed video or audio signal through the display 180 or the audio output unit 185.

As another example, the controller 170 may, for example, receive an external device image playback command received through the user input interface unit 150, from an external device input through the external device interface unit 130, for example, a camera or a camcorder. The video signal or the audio signal may be output through the display 180 or the audio output unit 185.

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

In this case, the image displayed on the display 180 may be a still image or a video, and may be a 2D image or a 3D image.

Meanwhile, the controller 170 may generate and display a 3D object with respect to a predetermined object in the image displayed on the display 180. For example, the object may be at least one of a connected web screen (newspaper, magazine, etc.), an EPG (Electronic Program Guide), various menus, widgets, icons, still images, videos, 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 appear protruding from the image displayed on the display 180.

The controller 170 recognizes a user's position based on an image photographed by a photographing unit (not shown). For example, the distance (z-axis coordinate) between the user and the image display apparatus 100 may be determined. In addition, the x-axis coordinates and the y-axis coordinates in the image display apparatus 100 corresponding to the user position can be grasped.

On the other hand, although not shown in the figure, it may be further provided with a channel browsing processing unit for generating a thumbnail image corresponding to the channel signal or the external input signal. The channel browsing processor may receive a stream signal TS output from the demodulator 120 or a stream signal output from the external device interface 130, extract a video from the input stream signal, and generate a thumbnail image. Can be. The generated thumbnail image may be input as it is or encoded to the controller 170. In addition, the generated thumbnail image may be encoded in a stream form and input to the controller 170. The controller 170 may display a thumbnail list including a plurality of thumbnail images on the display 180 by using the input thumbnail image. In this case, the thumbnail list may be displayed in a simple viewing manner displayed in a partial region while a predetermined image is displayed on the display 180 or in an overall viewing manner displayed in most regions of the display 180.

The display 180 converts an image signal, a data signal, an OSD signal, a control signal, or an image signal, a data signal, a control signal received from the external device interface unit 130 processed by the controller 170, and generates a driving signal. Create

The display 180 may be a PDP, an LCD, an OLED, a flexible display, or the like, and in particular, according to an embodiment of the present invention, it is preferable that a 3D display is possible.

The display 180 may be divided into an additional display method and a single display method for viewing a 3D image.

The independent display method may implement a 3D image by the display 180 alone without additional display, for example, glasses, and the like. For example, various methods such as a lenticular method and a parallax barrier may be used. Can be applied.

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

In the embodiment of the present invention, a 3D image viewing apparatus 195 is provided for viewing 3D images. The 3D image viewing apparatus 195 is an additional display of the active type among the various types described above. Hereinafter, the description will be based on the shutter glass.

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

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

The controller 170 may detect a gesture of the user by combining or combining the image photographed by the photographing unit (not shown) or the detected signal from the sensing unit (not shown).

The power supply unit 190 supplies the corresponding power throughout the image display apparatus 100. In particular, power may be supplied to the controller 170, which may 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. In addition, according to the exemplary embodiment, power may be supplied to a heat generating unit including a heating wire.

The remote control apparatus 200 transmits the user input to the user input interface unit 150. To this end, the remote control device 200 may use infrared (IR) communication, RF (Radio Frequency) communication, Bluetooth (Bluetooth), UWB (Ultra Wideband), ZigBee (ZigBee) method and the like. In addition, the remote control apparatus 200 may receive an image, an audio or a data signal output from the user input interface unit 150, and display or output the audio from the remote control apparatus 200.

The video display device 100 described above is a fixed type of ATSC (8-VSB) digital broadcasting, DVB-T (COFDM) digital broadcasting, ISDB-T (BST-OFDM) digital broadcasting, and the like. It may be a digital broadcast receiver capable of receiving at least one. In addition, as a mobile type, digital broadcasting of terrestrial DMB system, digital broadcasting of satellite DMB system, digital broadcasting of ATSC-M / H system, digital broadcasting of DVB-H system (COFDM system) and media flow link only system It may be a digital broadcast receiver capable of receiving at least one of digital broadcasts. It may also be a digital broadcast receiver for cable, satellite communications, or IPTV.

On the other hand, the video display device described in the present specification is a TV receiver, a mobile phone, a smart phone (notebook computer), a digital broadcasting terminal, PDA (Personal Digital Assistants), PMP (Portable Multimedia Player), etc. May be included.

Meanwhile, a block diagram of the image display apparatus 100 shown in FIG. 1 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 that is 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.

2 is an internal block diagram of the controller of FIG. 1, FIG. 3 is a diagram illustrating various formats of a 3D image, and FIG. 4 is a diagram illustrating an operation of a shutter glass according to the frame sequential format of FIG. 3.

Referring to the drawings, the control unit 170 according to an embodiment of the present invention, the demultiplexer 210, the image processor 220, the OSD generator 240, the mixer 245, the frame rate converter 250, and a formatter 260. In addition, the apparatus may further include a voice processor (not shown) and a data processor (not shown).

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

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

The image decoder 225 decodes the demultiplexed image signal, and the scaler 235 performs scaling to output the resolution of the decoded image signal on the display 180.

The video decoder 225 may include decoders of various standards.

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

Also, for example, the demultiplexed 2D video signal is a digital video broadcasting (DMB) method or a video signal of H.264 standard according to DVB-H, or a depth video of MPEC-C part 3 , Multi-view video according to Multi-view Video Coding (MVC) or free-view video according to Free-viewpoint TV (TV), respectively, decoded by H.264 decoder, MPEC-C decoder, MVC decoder or FTV decoder Can be.

Meanwhile, the image signal decoded by the image processor 220 may be classified into a case in which only a 2D image signal is present, a case in which a 2D image signal and a 3D image signal are mixed, and a case in which only a 3D image signal is present.

The image processor 220 may detect whether the demultiplexed video signal is a 2D video signal or a 3D video signal. Whether the image is a 3D image signal may 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 video signal is a 3D video signal may be determined by referring to a 3D video flag, 3D video metadata, or 3D video format information in the header of the stream. You can judge.

The image signal decoded by the image processor 220 may be a 3D image signal having various formats. For example, the image may be a 3D image signal including a color image and a depth image, or may be a 3D image signal including 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 (FIG. 3A) in which the left eye video signal L and the right eye video signal R are arranged left and right, as shown in FIG. Frame Sequential format (FIG. 3B), Top / Down format (FIG. 3C) arranged up and down, and Interlaced format for mixing a left eye video signal and a right eye video signal line by line (FIG. 3B). 3d), a checker box format (FIG. 3E) for mixing the left eye image signal and the right eye image signal for each box may be used.

The OSD generator 240 generates an OSD signal according to a user input or itself. For example, a signal for displaying various types of information on a screen of the display 180 as a graphic or text may be generated based on a user input signal. The generated OSD signal may include various data such as a user interface screen, various menu screens, widgets, and icons of the image display apparatus 100. 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 image signal processed by the image processor 220. In this case, the OSD signal and the decoded video signal may each include at least one of a 2D signal and a 3D signal. The mixed video signal is provided to the frame rate converter 250.

The frame rate converter 250 converts the frame rate of the input video. For example, a 60Hz frame rate is converted to 120Hz or 240Hz. When converting a frame rate of 60 Hz to 120 Hz, it is possible to insert the same first frame or insert a third frame predicted from the first frame and the second frame between 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 three predicted frames.

The formatter 260 may receive a mixed signal from the mixer 245, that is, an OSD signal and a decoded video signal, and separate the 2D video signal and the 3D video signal.

Meanwhile, in the present specification, a 3D video signal means a 3D object, and examples of such an object include a picture in picture (PIP) image (still image or a video), an EPG indicating broadcast program information, various menus, widgets, There may be an icon, text, an object in the image, a person, a background, a web screen (newspaper, magazine, etc.).

The formatter 260 may change the format of the 3D video signal. For example, it may be changed to any one of the various formats illustrated in FIG. 3. In particular, in the embodiment of the present invention, changing to the frame sequential format in the format of FIG. 3 is taken as an example. That is, the left eye image signal L and the right eye image signal R are alternately arranged in sequence. Accordingly, the 3D image viewing apparatus 195 of FIG. 1 is preferably a shutter glass.

4 illustrates an operation relationship between the shutter glass 195 and the frame sequential format. 4A illustrates that the left eye glass of the shutter glass 195 is opened and the right eye glass is closed when the left eye image L is displayed on the display 180. The shutter glass of FIG. The left eye glass of 195 is closed, and the right eye glass is opened.

The formatter 260 may convert a 2D video signal into a 3D video signal. For example, an edge or selectable object may be detected within the 2D image signal according to a 3D image generation algorithm, and an object or selectable object according to the detected edge may be separated into a 3D image signal and generated. Can be. In this case, the generated 3D image signal may be separated into a left eye image signal L and a right eye image signal R as described above.

The voice processing unit (not shown) in the controller 170 may perform voice processing of the demultiplexed voice 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 encoded speech signal of MPEG-2 standard, it may be decoded by an MPEG-2 decoder. In addition, when the demultiplexed speech signal is an encoded speech signal of MPEG 4 Bit Sliced Arithmetic Coding (BSAC) standard according to the terrestrial digital multimedia broadcasting (DMB) scheme, it may be decoded by an MPEG 4 decoder. In addition, when 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 may be decoded by the AAC decoder. In addition, when the demultiplexed speech signal is a encoded speech signal of the Dolby AC-3 standard, it may be decoded by the AC-3 decoder.

Also, the voice processing unit (not shown) in the controller 170 may process a base, a treble, a volume control, and the like.

The data processor (not shown) in the controller 170 may perform data processing of the demultiplexed data signal. For example, when the demultiplexed data signal is an encoded data signal, it may be decoded. The encoded data signal may be EPG (Electronic Progtam Guide) information including broadcast information such as a start time and an end time of a broadcast program broadcasted in each channel. For example, the EPG information may be TSC-PSIP (ATSC-Program and System Information Protocol) information in the ATSC scheme, and may include DVB-Service Information (DVB-SI) in the DVB scheme. . The ATSC-PSIP information or the DVB-SI information may be information included in the aforementioned stream, that is, the header (4 bytes) of the MPEG-2 TS.

Meanwhile, although FIG. 2 illustrates that the signals from the OSD generator 240 and the image processor 220 are mixed in the mixer 245 and then 3D processed in the formatter 260, the mixer is not limited thereto. May be located after the formatter. That is, the output of the image processor 220 is 3D processed by the formatter 260, and the OSD generator 240 performs 3D processing together with OSD generation, and then mixes each processed 3D signal by the mixer 245. It is also possible.

Meanwhile, a block diagram of the controller 170 shown in FIG. 2 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 specification of the controller 170 that is actually implemented.

In particular, the frame rate converter 250 and the formatter 260 may not be provided in the controller 170, but may be separately provided.

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

Referring to the drawings, the 3D image viewing apparatus according to the embodiment of the present invention includes a communication unit 510 for receiving a synchronization signal and the like, a control unit 520 for generating a driving signal according to the synchronization signal, and a drive signal of the control unit 520. The glass unit 530 performs an opening and closing operation. In addition, it may further include a voice output unit 540 for outputting various voice signals. In addition, according to the exemplary embodiment, the apparatus may further include a multiplexer (not shown) for signal processing. The glass unit 530 includes a left eye glass unit 531 and a right eye glass unit 532. As the shutters of the left eye glass unit 531 and the right eye glass unit 532 are alternately opened and closed, the user can view a 3D image.

However, the image display device may not only display 3D images, but may also display 2D images. In this case, the shutter opening and closing operation of the glass unit 530 is unnecessary while the 2D image is displayed. Therefore, if the 3D image viewing apparatus can determine whether the content currently being played on the image display apparatus is a 2D image or a 3D image, unnecessary shutter opening and closing operations of the glass unit 530 can be prevented.

Therefore, the controller 520 may operate the glass unit 530 by determining that the 3D image is being played in the image display device only when it is detected that the 3D synchronization signal is received through the communication unit 510. The controller 520 generates a shutter driving signal and outputs the shutter driving signal to the glass unit 530 in order to operate the glass unit 530.

The communication unit 510 receives a control signal for the 3D image viewing apparatus transmitted from the image display apparatus, and the control unit 520 receives the signal received from the image display apparatus through the communication unit 510 from the left eye glass unit 531 and the right eye. The glass unit 520 converts and generates a driving signal for controlling the glass unit 520.

The controller 520 may generate a shutter driving signal using the shutter control signal received from the image display device, or may convert the shutter control signal into a shutter driving signal. The shutter control signal is received by the communication unit 510 from the image display device, and the shutter control signal may be included in the 3D synchronization signal and transmitted. That is, the 3D synchronization signal may be a signal for synchronizing only the synchronization between the 3D image viewing apparatus and the image display apparatus, or may be a signal for controlling the operation of the shutter of the left eye glass unit 531 and the right eye glass unit 532 after synchronization is performed. have. When the 3D synchronization signal includes the content of controlling the operation of the shutter of the left eye glass unit 531 and the right eye glass unit 532, the 3D synchronization signal may be regarded as including the shutter control signal.

Here, the communication unit 510 may be connected to the image display device by Bluetooth communication to transmit and receive various signals. Accordingly, the 3D video viewing device may receive a 3D synchronization signal from the video display device by Bluetooth communication. In addition, various control signals and audio signals between the 3D video viewing device and the video display device may be transmitted by Bluetooth communication. . When the signal is transmitted by Bluetooth communication, the influence of the direction between the 3D viewing device and the image display device is slightly reduced, and the power consumption may be reduced, compared to the method in which the signal is transmitted and received by the IR communication using the conventional IR sensor. have.

On the other hand, the glass unit 530 is on / off (on / off) operation of the left eye glass 531 and the right eye glass 532 according to the shutter driving signal output from the control unit 520, that is, opening and closing operation of the shutter glass Do this. The image display device may alternately align the left eye image signal L and the right eye image signal R sequentially. Accordingly, when the left eye image L is displayed on the display 180, the left eye glass unit 531 It is opened and the right eyeglass portion 532 is closed. When the right eye image R is displayed, the left eye glass unit 531 is closed and the right eye glass unit 532 is opened. The opening and closing operation of the glass unit 530 may be synchronized with an image displayed by the image display device. For the synchronization, as described above, the communication unit 510 receives a synchronization signal from the image display device.

The audio output unit 540 may output a warning sound or an audio signal received from the image display device.

The 3D image viewing apparatus may further include a power supply unit (not shown). The power supply unit may supply power necessary for the operation of the 3D image viewing apparatus, including opening and closing the shutter of the glass unit 530, signal generation, and signal transmission and reception. In addition, the power supply may be controlled by the control unit 520 whether the power supply, in particular, the power supplied to the glass unit 530 can be independently turned on / off. According to an exemplary embodiment of the present invention, when the content played on the image display device is changed and the 2D content is played on the image display device, the controller 520 may detect this and cut off the power supply supplied to the glass unit 530. .

6 is a flowchart illustrating a method of operating a 3D image viewing apparatus according to an embodiment of the present invention.

As described above, the image display apparatus may not only display a 3D image, but may also display a 2D image, and may simultaneously display a 3D image and a 2D image. Therefore, when the 3D image is not displayed on the image display apparatus, the glass unit of the 3D image viewing apparatus does not need to perform the shutter opening and closing operation.

The video viewing apparatus may determine that the content being played on the video display device is 3D content only when the 3D synchronization signal is detected. Therefore, only when the controller 520 detects that the 3D synchronization signal is received through the communication unit 510, the controller 520 may determine that the 3D image is being played on the image display device.

To this end, the communication unit 510 may first receive a 3D synchronization signal from the image display apparatus (S610). Here, the 3D synchronization signal may be transmitted by Bluetooth communication as described above. The controller 520 determines that 3D content is being played back on the image display device only when it is detected that the 3D synchronization signal is received by the communication unit 510 (S620).

In the embodiment of the present invention, a case in which the image display apparatus also transmits a control signal for opening and closing the shutter of the 3D image viewing apparatus together with the 3D synchronization signal will be described as an example. In this case, the control signal for opening and closing the shutter may be included in the 3D synchronization signal. The control signal for opening and closing the shutter received from the image display apparatus will be referred to as a shutter control signal hereinafter. When the shutter control signal is transmitted as being included in the 3D synchronization signal or transmitted separately from the 3D synchronization signal (S630), the controller 520 of the 3D image viewing apparatus uses the 3D synchronization signal or the shutter control signal including the shutter control signal. The shutter driving signal may be generated. According to another embodiment, when the image display apparatus transmits only the 3D synchronization signal to the 3D image viewing apparatus, the control unit 520 of the 3D image viewing apparatus generates a driving signal for opening and closing the shutter using only the synchronization information, and the glass unit 530. ) Can also be driven.

The controller 520 generates a shutter driving signal through the above-described process and outputs the shutter driving signal to the glass unit 530 (S640). The glass unit 530 opens and closes the shutters of the left eye glass unit 531 and the right eye glass unit 532 according to the shutter driving signal (S650).

If the controller 520 does not detect the 3D synchronization signal or detects the 3D synchronization signal, the controller 520 may determine that the 3D content is not being reproduced in the image display apparatus (S620). For example, the playback content of the video display device is changed immediately after the 3D synchronization signal or the power of the video display device is cut off. In this case, the controller 520 may stop the driving of the glass unit 530 to prevent the shutter of the glass unit 530 from being opened or closed (S635). To this end, if it is determined that the 3D content is not being reproduced, the reception of the shutter control signal transmitted from the image display device is blocked, or even if the shutter control signal is received, the shutter driving signal is not generated or supplied to the glass unit 530. Can be turned off. That is, the controller 520 stops driving the glass unit 530 while the 3D image is not reproduced through the image display device, thereby preventing power waste of the 3D image viewing apparatus due to unnecessary shutter opening and closing.

7 is a flowchart illustrating a method of operating a 3D image viewing apparatus according to another embodiment of the present invention.

FIG. 7 illustrates that the 3D synchronization between the image display apparatus and the 3D image viewing apparatus is already performed by Bluetooth communication, etc., and thus the content is changed due to a channel change or the like while the 3D image viewing apparatus is driven. It is a figure referred for explaining an embodiment in the case of change.

The image display apparatus reproduces the 3D content, and accordingly transmits a signal for controlling the shutter to drive the shutter of the 3D image viewing apparatus (S710).

The content played back on the video display device is changed (S720). It is assumed that the content currently being played on the image display apparatus is a 3D image. The content reproduced in the image display apparatus may be changed from 3D image to another 3D image or from 3D image to 2D image.

The controller 520 determines whether the changed content is a 3D image or a 2D image according to whether the 3D synchronization signal is detected again after the content is changed. If the content is changed but there is no 3D synchronization signal received from the image display apparatus to the communication unit 510, the controller 520 determines that the 2D image is being played on the image display apparatus (S730). When the 2D image is reproduced on the image display apparatus, the 3D image viewing apparatus stops driving the shutter (S740). In order to stop the driving of the shutter, the controller 520 may stop the generation or output of the shutter driving signal, or may output a separate control signal to the glass unit 530 to stop opening or closing the shutter. Alternatively, the controller 520 may cut off the power supplied to the glass unit 530 to open and close the shutters of the left eye glass unit 531 and the right eye glass unit 532.

On the other hand, if the content is changed from the 3D image to another 3D image, and the controller 520 detects that the 3D synchronization signal for the new content is received by the communication unit 510, the controller 520 may display another 3D image in the 3D image. It may be determined that the content has been changed. (S730). In this case, the 3D image viewing apparatus resynchronizes with the image display apparatus according to the newly received 3D synchronization signal corresponding to the changed contents. The controller 520 generates a shutter driving signal to open and close the shutters of the left eye glass unit 531 and the right eye glass unit 532 (S750).

8 is a flowchart illustrating a method of operating an image display apparatus connected to a 3D image viewing apparatus according to an exemplary embodiment of the present invention.

The image display apparatus outputs a 3D synchronization signal to the 3D image viewing apparatus (S810). The 3D synchronization signal may include a shutter control signal for shutter control of the 3D image viewing apparatus.

After outputting the 3D synchronization signal, when playing the 3D content for a predetermined time (S820)

If the 3D synchronization signal is output but the content is changed to the 2D image or the ratio of the 3D image is low in the reproduced image, the image display device may determine that the 3D content is not reproduced (S820). If the image display device is controlling the opening and closing of the shutter of the 3D image viewing device, the image display device stops the shutter control of the 3D image viewing device (S840).

Thereafter, the type of content played by the video display device may be changed (S850). When the content to be reproduced is changed from the 3D image to the 2D image, or the content is changed but changed from the 3D image to another 3D image, the description will be divided into two types.

When the content is changed from the 3D image to the 2D image, the image display device stops the existing shutter control (S860S). Of course, when the image display apparatus stops the shutter control, it is assumed that the image display apparatus transmits the shutter control signal for controlling the shutter of the 3D image viewing apparatus to the 3D image viewing apparatus. Also, since the image display apparatus does not need to perform synchronization with the 3D image viewing apparatus again, the image display apparatus does not output the 3D synchronization signal. Accordingly, the 3D image viewing apparatus does not detect the 3D synchronization signal, and the image display apparatus determines that the 2D image is being played. If the image display apparatus does not control the shutter of the 3D image viewing apparatus, since the 3D synchronization signal is not detected after the content change, the 3D image viewing apparatus according to the embodiment of the present invention stops the shutter opening and closing operation by itself.

When the content is changed from the 3D image to another 3D image, the image display apparatus again outputs a 3D synchronization signal for resynchronization with the 3D image viewing apparatus (S870). In addition, the shutter control signal for opening and closing the shutter of the 3D image viewing apparatus may be output (S880). According to the exemplary embodiment, the shutter control signal may not be output by the image display device or may be included in the 3D synchronization signal and transmitted.

According to the exemplary embodiment of the present invention, the necessary shutter opening and closing operation of the 3D image viewing apparatus may be stopped. Therefore, the time or cost required for supplying power to the 3D video viewing device is saved, and the inconvenience of the user for replacing or charging the battery of the 3D video viewing device can be reduced. In addition, since the 3D image viewing apparatus is driven only when the 3D image is displayed on the image display apparatus, dizziness of the user can be reduced. In addition, when the 2D image and the 3D image are alternately reproduced, even when the 2D image and the 3D image are simultaneously displayed on one screen, the user can enjoy various contents without having to remove the 3D image viewing apparatus every time.

3D image viewing apparatus and its operation method according to the present invention is not limited to the configuration and method of the embodiments described as described above, the embodiments are all or all of the embodiments so that various modifications can be made Some may be optionally combined.

Meanwhile, the operating method of the 3D image viewing apparatus of the present invention may be embodied as processor readable codes on a processor readable recording medium included in the image display apparatus. The processor-readable recording medium includes all kinds of recording devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, 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. . The processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.

In addition, while the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

100: video display device
200: remote control device
195: 3D video viewing device
510: communication unit
520: control unit
530: glass part

Claims (12)

In the 3D image viewing device connected to the image display device capable of displaying a 3D image,
A communication unit which receives a 3D synchronization signal from an image display apparatus that reproduces a 3D image;
A controller configured to determine that the content being played on the video display device is a 3D image when the 3D synchronization signal is detected, and generate a shutter driving signal; And
And a glass unit including a left eye glass unit and a right eye glass unit which are opened and closed according to the shutter driving signal. The method of claim 1,
The communication unit receives a shutter control signal from the image display device,
And the controller generates the shutter driving signal according to the shutter control signal. The method of claim 2,
And the communication unit receives at least one of the synchronization signal and the shutter control signal by Bluetooth communication. The method of claim 2,
And the shutter control signal is included in the synchronization signal and transmitted. The method of claim 1,
Further comprising a power supply for supplying power necessary for opening and closing the glass,
And when the content is changed and 2D content is played on the image display device, the controller cuts off power supply of the power supply unit. The method of claim 1,
Further comprising a power supply for supplying power necessary for opening and closing the glass,
And the controller stops outputting the shutter driving signal when the content is changed and the 2D content is reproduced on the image display device. A method of operating a 3D image viewing apparatus connected to an image display apparatus capable of displaying a 3D image,
Detecting a 3D synchronization signal from an image display apparatus on which a 3D image is reproduced;
Determining that the content being played on the video display device is a 3D video when the 3D synchronization signal is detected;
Generating a shutter driving signal; And
And operating the left eye glass unit and the right eye glass unit according to the shutter driving signal. The method of claim 7, wherein
Receiving a shutter control signal from the image display device;
And operating the shutter driving signal according to the shutter control signal. The method of claim 8,
And at least one of the synchronization signal and the shutter control signal by Bluetooth communication. The method of claim 8,
And the shutter control signal is included in the synchronization signal to be transmitted. The method of claim 7, wherein
And when the content is changed and 2D content is reproduced on the image display device, blocking supply of power required to open and close the left eye glass unit and the right eye glass unit. The method of claim 7, wherein
And when the 2D content is reproduced on the image display device by changing the content, the output of the shutter driving signal is stopped to stop the opening and closing of the left eye glass and the right eye glass.

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