KR20120030829A - Image display apparatus, and method for operating the same - Google Patents

Abstract

PURPOSE: An image display apparatus and a method for operating the same are provided to perform asymmetrical alignment by converting left eye frame rate and right eye frame rate. CONSTITUTION: A video display device receives 3D image(S1110). The apparatus changes the frame rate of the 3D image(S1120). The apparatus allocates more frame between the changed 3D images of left eye video frame and right eye video frame(S1130). The apparatus displays the asymmetrically aligned left eye image frame and the right eye image frame on the display(S1140).

Description

Image display apparatus, and method for operating the same}

The present invention relates to an image display apparatus and an operation method thereof, and more particularly, to an image display apparatus and a method of operating the plurality of viewers can simultaneously view 2D and 3D images according to whether the 3D viewing apparatus is worn. .

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.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image display apparatus and a method of operating the same, which allow a plurality of viewers to simultaneously view a 2D image and a 3D image according to whether a 3D viewing apparatus is worn.

Another object of the present invention is to provide an image display apparatus and a method of operating the same, which can be notified when displaying a 3D image.

According to an aspect of the present invention, there is provided a method of operating an image display apparatus, the method including receiving a 3D image, converting a frame rate of the 3D image, and a left eye image frame of the frame rate converted 3D image. And asymmetrically arranging one or more of the right eye image frame and displaying the left eye image frame and the right eye image frame which are asymmetrically aligned on the display.

In addition, the image display device according to an embodiment of the present invention for achieving the above object, the frame rate converter for converting the frame rate of the received 3D image, the left eye image frame and the right eye image of the frame rate-converted 3D image A formatter for asymmetrically aligning and arranging any one of the frames, and a display for displaying an asymmetrically aligned 3D image.

According to an exemplary embodiment of the present invention, the left eye image frame and the right eye image frame of the 3D image are frame rate converted, asymmetrically aligned, and the asymmetrically aligned left eye image frame and the right eye image frame are displayed on the display, thereby wearing the 3D viewing device. The viewer can watch the 3D image, and the viewer who is not wearing the 3D viewer can watch the 2D image.

In particular, crosstalk is improved by opening the left eye glass and the right eye glass of the 3D viewing apparatus in synchronization with any one of the left eye image frame and the right eye image frame that are repeatedly aligned.

Meanwhile, for the viewer who does not wear the 3D viewing apparatus, an object indicating that the displayed image is displayed as a 3D image may be displayed. Therefore, it is possible to induce the viewer to wear the 3D viewing device.

1 is a block diagram illustrating an image display apparatus according to an exemplary embodiment of the present invention.
2A to 2B are internal block diagrams of a set-top box and a display device according to an embodiment of the present invention.
3 is an internal block diagram of the controller of FIG. 1.
4 is a diagram illustrating various formats of a 3D image.
5 is a diagram illustrating an operation of a 3D viewing apparatus according to the format of FIG. 4.
6 is a diagram illustrating various scaling methods of 3D video signals according to an embodiment of the present invention.
FIG. 7 is a diagram illustrating an image formed by a left eye image and a right eye image.
8 is a diagram illustrating depth of a 3D image according to a distance between a left eye image and a right eye image.
9 is a diagram illustrating a 3D viewing apparatus and an image display apparatus according to an exemplary embodiment of the present invention.
FIG. 10 is a block diagram illustrating the 3D viewing apparatus and the image display apparatus of FIG. 9.
11 is a flowchart illustrating a method of operating an image display apparatus according to an embodiment of the present invention.
12 to 16 are diagrams for describing various examples of an operation method of the image display apparatus of FIG. 11.

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

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 is a block diagram illustrating an image display apparatus according to an exemplary 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 unit 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 sensor unit (not shown), a controller 170, a display 180, an audio output unit 185, and a 3D viewing device 195.

The tuner unit 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.

In addition, the tuner unit 110 may receive a single broadcast RF broadcast signal according to an ATSC (Advanced Television System Committee) scheme or a multiple broadcast RF broadcast signal according to a digital video broadcasting (DVB) scheme.

Meanwhile, the tuner unit 110 sequentially selects RF broadcast signals of all broadcast channels stored through a channel memory function among RF broadcast signals received through an antenna in the present invention, and converts them to intermediate frequency signals or baseband video or audio signals. Can be converted to

On the other hand, the tuner unit 110 may be provided with a plurality of tuners in order to receive broadcast signals of a plurality of channels. Alternatively, a single tuner may be used to receive broadcast signals of multiple channels simultaneously.

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 unit 110 is an ATSC scheme, the demodulator 120 performs 7-VSB (7-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 unit 110 is a DVB scheme, the demodulator 120 performs coded orthogonal frequency division modulation (COFDMA) 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. 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 transmit or receive data with the connected external device 190. 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 the external device 190 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 or wireless. . The external device interface unit 130 transmits an image, audio, or data signal input from the outside through the connected external device 190 to the controller 170 of the image display apparatus 100. 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 apparatus 100 may communicate with Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and Digital Living Network Alliance (DLNA). Depending on the specification, it can be networked with other electronic devices.

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.

The external device interface unit 130 may transmit / receive data with the 3D 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 the Internet, a content provider, etc. 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.

The sensor unit (not shown) may detect the location of the user or the location of the user's gesture, touch, or 3D viewing device 195. To this end, the sensor unit (not shown) may include a touch sensor, a voice sensor, a position sensor, an operation sensor, a gyro sensor, and the like.

The detected user's location, user's gesture, touch, or location signal of the 3D viewing device 195 may be input to the controller 170. Alternatively, unlike the drawing, it may be input to the controller 170 through the user input interface unit 150.

The controller 170 may demultiplex the input stream or process the demultiplexed signals through the tuner unit 110, the demodulator 120, or the external device interface unit 130. Signals can be generated 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. 3.

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 channel selected according to a predetermined channel selection command received through the user input interface 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 output an external device 190, eg, a camera, input through the external device interface unit 130 according to an external device image playback command received through the user input interface unit 150. Alternatively, the video signal or the audio signal from the camcorder 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, the broadcast image input through the tuner unit 110, the external input image input through the external device interface unit 130, or the image input through the network interface unit 135 or stored in the storage unit 140. The image 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 display 180 corresponding to the user position may be determined.

Meanwhile, the controller 170 may perform signal processing to enable viewing of a corresponding video according to the viewing device.

For example, when the sensor unit (not shown) or the photographing unit (not shown) detects the presence, operation, or number of the viewing device 195, the controller 170 performs pairing with the viewing device 195. Signal processing can be performed. That is, the display device 195 may control to output the pairing signal to the viewing device 195 and to receive the response signal from the viewing device 195.

The controller 170 may control the tuner 110 to receive a broadcast image according to the number of detected viewing devices 195. For example, if the number of detected viewing devices is three, the tuner 110 including the plurality of tuners may be controlled to receive broadcast images of different channels. In addition, the controller 170 may control to display each broadcast video at different times in synchronization with each viewing device.

The controller 170 may also receive an input external input image according to the number of detected viewing devices. For example, when the number of detected viewing apparatuses is three, each of the plurality of viewing apparatuses may be controlled to receive an external input image from an optical device such as a broadcast image or a DVD and an external input image from a PC. In addition, the controller 170 may control to display each video (broadcast video, DVD video, PC video) at different times in synchronization with each viewing device.

Meanwhile, the controller 170 may increase the vertical synchronization frequency Vsync of the displayed image and control the corresponding images to be displayed whenever the number of the viewing apparatuses detected during image display increases. For example, for 1/60 seconds, the first image and the second image are displayed in synchronization with the first viewing device and the second 3D viewing device, respectively, and when the third viewing device is used, for 1/60 seconds, The first to third images may be controlled to be displayed in synchronization with the first to third viewing devices, respectively. That is, the first image and the second image may be displayed at 120 Hz, and the first to third images may be displayed at 180 HZ.

On the other hand, the control unit 170 may set different viewing targets, for example, channel searching targets of broadcast images, for each viewing apparatus. For example, a channel search target may be set differently for each age such as an adult and a child, and the search target may be different when the channel is searched. In addition, it is also possible to provide by classification by taste, gender, recent viewing channel, or program grade.

On the other hand, when the first viewing device and the second viewing device select the same image from each other, the controller 170 may control to notify a message indicating that it is a duplicate. Such a message may be displayed in the form of an object on the display 180 or may be transmitted as a wireless signal to each viewing device.

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 thumbnail images in the thumbnail list may be updated sequentially.

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 a 3D display. In order to view the 3D image, the display 180 may be divided into an additional display method and a single display method.

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, a lenticular method, a parallax barrier, or the like. Various methods can be applied.

Meanwhile, the additional display method may implement 3D images by using the additional display as the 3D viewing apparatus 195 in addition to the display 180. For example, various methods such as a head mounted display (HMD) type and glasses type may be used. Can be applied.

On the other hand, the spectacle type may be divided into a passive system such as a polarized glasses type and an active system such as a shutter glass type. In addition, the head mounted display can be divided into a passive type and an active type.

The 3D viewing apparatus 195 may be 3D glasses capable of viewing stereoscopic images. The 3D glass 195 may include a passive polarized glass or an active shutter glass, and is described with the concept of including the aforementioned head mount type.

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 voice output unit 185 may be implemented by various types of speakers.

The photographing unit (not shown) photographs the user. The photographing unit (not shown) may be implemented by one camera, but is not limited thereto and may be implemented by a plurality of cameras. Meanwhile, the photographing unit (not shown) may be disposed above the display 180. The image information photographed by the photographing unit (not shown) is input to the controller 170.

The controller 170 may detect a user's gesture by combining or combining an image captured by a photographing unit (not shown) or a detected signal from a sensor unit (not shown).

The remote control apparatus 200 transmits the user input to the user input interface unit 150. To this end, the remote control apparatus 200 can use Bluetooth, RF (radio frequency) communication, infrared (IR) communication, UWB (Ultra Wideband), ZigBee, or 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 image display device described in the present specification is a TV receiver, a projector, a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, PDA (Personal Digital Assistants), PMP (Portable) Multimedia Player) 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.

On the other hand, the image display apparatus 100 does not include the tuner 110 and the demodulator 120 shown in FIG. 1, unlike the illustrated in FIG. 1, but the network interface 130 or the external device interface unit ( Through 135, image content may be received and played back.

The image display apparatus 100 is an example of an image signal processing apparatus that performs signal processing of an image stored in an apparatus or an input image. Another example of the image signal processing apparatus is the display 180 illustrated in FIG. 1. And a set top box in which the audio output unit 185 is excluded, the above-described DVD player, Blu-ray player, game device, computer, etc. may be further illustrated. Among these, the set top box will be described with reference to FIGS. 2A to 2B below.

2A to 2B are internal block diagrams of a set-top box and a display device according to an embodiment of the present invention.

First, referring to FIG. 2A, the set-top box 250 and the display apparatus 300 may transmit or receive data by wire or wirelessly. Hereinafter, a description will be given focusing on differences from FIG. 1.

The set top box 250 may include a network interface unit 255, a storage unit 258, a signal processor 260, a user input interface unit 263, and an external device interface unit 265.

The network interface unit 255 provides an interface for connecting to a wired / wireless network including an internet network. It is also possible to transmit or receive data with other users or other electronic devices via the connected network or another network linked to the connected network.

The storage unit 258 may store a program for processing and controlling signals in the signal processing unit 260, and may include an image, audio, or data input from the external device interface unit 265 or the network interface unit 255. It may also serve as a temporary storage of the signal.

The signal processor 260 performs signal processing on the input signal. For example, demultiplexing or decoding of an input video signal may be performed, and demultiplexing or decoding of an input audio signal may be performed. To this end, a video decoder or an audio decoder may be provided. The signal processed video signal or audio signal may be transmitted to the display apparatus 300 through the external device interface unit 265.

The user input interface unit 263 transmits a signal input by the user to the signal processor 260 or transmits a signal from the signal processor 260 to the user. For example, various control signals, such as power on / off, operation input, setting input, etc., which are input through a local key (not shown) or the remote control apparatus 200, may be received and transmitted to the signal processor 260.

The external device interface unit 265 provides an interface for data transmission or reception with an external device connected by wire or wirelessly. In particular, an interface for transmitting or receiving data with the display apparatus 300 is provided. In addition, it is possible to provide an interface for transmitting or receiving data with an external device such as a game device, a camera, a camcorder, a computer (laptop), or the like.

The set top box 250 may further include a media input unit (not shown) for reproducing a separate media. An example of such a media input unit may be a Blu-ray input unit (not shown). That is, the set top box 250 can be provided with a Blu-ray player or the like. The input media such as a Blu-ray disc may be transmitted to the display apparatus 300 through the external device interface unit 265 for display after signal processing such as demultiplexing or decoding in the signal processing unit 260. .

The display apparatus 300 includes a tuner unit 270, an external device interface unit 273, a demodulator 275, a storage unit 278, a controller 280, a user input interface unit 283, and a display 290. , And an audio output unit 295.

The tuner 270, the demodulator 275, the storage 278, the controller 280, the user input interface 283, the display 290, and the audio output unit 295 are described with reference to FIG. 1. The tuner 110, the demodulator 120, the storage 140, the controller 170, the user input interface 150, the display 180, and the audio output unit 185 are described. Omit the description.

The external device interface unit 273 provides an interface for data transmission or reception with an external device connected by wire or wirelessly. In particular, it provides an interface for transmitting or receiving data with the set-top box 250.

Accordingly, the video signal or the audio signal input through the set top box 250 is output through the display 290 or the audio output unit 295 via the control unit 290.

Next, referring to FIG. 2B, the set-top box 250 and the display apparatus 300 are the same as the set-top box 250 and the display apparatus 300 of FIG. 2A, except that the tuner 270 and the demodulator ( The difference is that the position of 275 is located in the set-top box 250 and not in the display apparatus 300. Only the differences are described below.

The signal processor 260 may perform signal processing of a broadcast signal received through the tuner 270 and the demodulator 275. In addition, the user input interface unit 263 may receive an input such as channel selection and channel storage.

Meanwhile, although the audio output unit 185 of FIG. 1 is not illustrated in the set top box 250 of FIGS. 2A to 2B, it is also possible to have separate audio output units.

3 is an internal block diagram of the controller of FIG. 1, FIG. 4 is a diagram illustrating various formats of a 3D image, and FIG. 5 is a diagram illustrating an operation of a 3D viewing apparatus according to the format of FIG. 4.

Referring to the drawings, the control unit 170 according to an embodiment of the present invention, the demultiplexer 310, the image processor 320, the OSD generator 340, the mixer 345, the frame rate converter 350, and a formatter 360. The audio processing unit (not shown) and the data processing unit (not shown) may be further included.

The demultiplexer 310 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 310 may be a stream signal output from the tuner 110, the demodulator 120, or the external device interface 130.

The image processor 320 may perform image processing of the demultiplexed image signal. To this end, the image processor 320 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, the image decoder 225 may include at least one of an MPEG-2 decoder, an H.264 decoder, an MPEC-C decoder (MPEC-C part 3), an MVC decoder, and an FTV decoder.

Meanwhile, the image signal decoded by the image processor 320 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.

For example, when the external video signal input from the external device 190 or the broadcast video signal of the broadcast signal received by the tuner 110 includes only the 2D video signal, the 2D video signal and the 3D video signal are mixed. , And 3D video signals, the signal may be processed by the controller 170, in particular, the image processor 320, and the like, and thus, mixed signals of 2D video signals, 2D video signals, and 3D video signals, respectively. The 3D video signal may be output.

The image signal decoded by the image processor 320 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. 4A) in which the left eye video signal L and the right eye video signal R are disposed left and right, as shown in FIG. 4, and up and down. Top / Down format (FIG. 4B) to arrange, Frame Sequential format (FIG. 4C) to arrange by time division, Interlaced format which mixes left-eye video signal and right-eye video signal line by line (FIG. 4B) 4d), a checker box format (FIG. 4E) for mixing the left eye image signal and the right eye image signal for each box may be used.

The OSD generator 340 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 345 may mix the OSD signal generated by the OSD generator 340 and the decoded image signal processed by the image processor 320. 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 350.

The frame rate converter (FRC) 350 converts the frame rate of the input video. For example, a frame rate of 60 Hz is converted to 120 Hz or 240 Hz or 480 Hz. 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. When converting a frame rate of 60 Hz to 480 Hz, it is possible to insert seven more identical frames or insert seven predicted frames.

The frame rate converter 350 may output the input frame rate as it is without additional frame rate conversion. Preferably, when the 2D video signal is input, the frame rate can be output as it is. On the other hand, when a 3D video signal is input, the frame rate can be varied as described above.

The formatter 360 may arrange the left eye image frame and the right eye image frame of the frame rate-converted 3D image. In addition, the synchronization signal Vsync for opening the left eye glass and the right eye glass of the 3D viewing apparatus 195 may be output.

Meanwhile, the formatter 360 may receive a mixed signal from the mixer 345, 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, the 3D video signal is meant to include a 3D object. Examples of the 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 360 may change the format of the 3D video signal. For example, it may be changed to any one of various formats illustrated in FIG. 4. Accordingly, according to the format, as shown in FIG. 5, the operation of the glasses-type 3D viewing apparatus may be performed.

FIG. 5 illustrates the operation of the 3D glasses 195, in particular the shutter glass 195, when the formatter 360 arranges and outputs the frame sequential format among the formats of FIG.

That is, FIG. 5A illustrates that when the left eye image L is displayed on the display 180, the left eye glass of the shutter glass 195 is opened and the right eye glass is closed. FIG. 5B illustrates the display ( When the right eye image R is displayed at 180, the left eye glass of the shutter glass 195 is closed and the right eye glass is opened.

Meanwhile, the formatter 360 may convert the 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 divided into a left eye image signal L and a right eye image signal R, as described above, and may be aligned.

Although not shown in the figure, a 3D processor (not shown) for processing a 3D effect signal may be further disposed after the formatter 360. The 3D processor (not shown) may process brightness, tint, and color adjustment of an image signal to improve 3D effects. For example, signal processing may be performed to sharpen the near distance and blur the far distance. Meanwhile, the functions of the 3D processor may be merged into the formatter 360 or merged into the image processor 320. This will be described later with reference to FIG. 6 and the like.

Meanwhile, the audio processor (not shown) in the controller 170 may perform voice processing of the demultiplexed voice signal. To this end, the audio processor (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 audio processor (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 ATSC-PSIP (ATSC-Program and System Information Protocol) information in the case of the ATSC scheme, and may include DVB-Service Information (DVB-SI) in the case of the DVB scheme. . The ATSC-PSIP information or the DVB-SI information may be information included in the aforementioned stream, that is, the header (2 bytes) of the MPEG-2 TS.

In FIG. 3, the signals from the OSD generator 340 and the image processor 320 are mixed in the mixer 345 and then 3D processed in the formatter 360, but the present invention is not limited thereto. May be located after the formatter. That is, the output of the image processor 320 is 3D processed by the formatter 360, and the OSD generator 340 performs 3D processing together with OSD generation, and then mixes each processed 3D signal by the mixer 345. It is also possible.

Meanwhile, a block diagram of the controller 170 shown in FIG. 3 is a block diagram for one 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 350 and the formatter 360 are not provided in the controller 170, but may be provided separately.

6 is a diagram illustrating various scaling methods of 3D video signals according to an embodiment of the present invention.

Referring to the drawings, in order to increase the 3D effect, the controller 170 may perform 3D effect signal processing. Among them, in particular, the size or tilt of the 3D object in the 3D image may be adjusted.

As shown in FIG. 6A, the 3D image signal or the 3D object 510 in the 3D image signal may be enlarged or reduced 512 as a whole at a predetermined ratio, and as shown in FIGS. 6B and 6C. The 3D object may be partially enlarged or reduced (trapezoidal shapes 514 and 516). In addition, as illustrated in FIG. 6D, at least a part of the 3D object may be rotated (parallel quadrilateral shape) 518. Through such scaling (scaling) or tilting, it is possible to emphasize a three-dimensional effect, that is, a three-dimensional effect, of a 3D image or a 3D object in the 3D image.

On the other hand, as the slope becomes larger, as shown in FIG. 6 (b) or 6 (c), the length difference between the parallel sides of the trapezoidal shapes 514 and 516 increases, or as shown in FIG. 6 (d), the rotation angle is increased. It gets bigger.

Meanwhile, the size adjustment or the tilt adjustment may be performed after the 3D video signal is aligned in a predetermined format in the formatter 360. Alternatively, it may be performed by the scaler 235 in the image processor 320. On the other hand, the OSD generation unit 340, it is also possible to create the object in the shape as shown in Figure 6 to generate the OSD to emphasize the 3D effect.

On the other hand, although not shown in the figure, as a signal processing for a three-dimensional effect, in addition to the size adjustment or tilt adjustment illustrated in Figure 6, the brightness (brightness), tint (Tint) and It is also possible to perform signal processing such as color adjustment. For example, signal processing may be performed to sharpen the near distance and blur the far distance. Meanwhile, the signal processing for the 3D effect may be performed in the controller 170 or may be performed through a separate 3D processor. In particular, when performed in the controller 170, it may be performed in the formatter 360 together with the above-described size adjustment or tilt adjustment, or may be performed in the image processor 320.

FIG. 7 is a diagram illustrating an image formed by a left eye image and a right eye image, and FIG. 8 is a diagram illustrating a depth of a 3D image according to an interval between a left eye image and a right eye image.

First, referring to FIG. 7, a plurality of images or a plurality of objects 615, 625, 635, and 645 are illustrated.

First, the first object 615 includes first left eye images 611 and L based on the first left eye image signal and first right eye images 613 and R based on the first right eye image signal. An interval between the first left eye image 611 and L and the first right eye image 613 and R is illustrated to be d1 on the display 180. In this case, the user recognizes that an image is formed at an intersection point of the extension line connecting the left eye 601 and the first left eye image 611 and the extension line connecting the right eye 603 and the first right eye image 603. Accordingly, the user recognizes that the first object 615 is located behind the display 180.

Next, since the second object 625 includes the second left eye images 621 and L and the second right eye images 623 and R and overlaps each other, the second object 625 is displayed on the display 180. do. Accordingly, the user recognizes that the second object 625 is located on the display 180.

Next, the third object 635 and the fourth object 645 are the third left eye image 631 and L, the second right eye image 633 and R, and the fourth left eye image 641 and L and the fourth object, respectively. The right eye images 643 and R are included, and the intervals are d3 and d4, respectively.

According to the above-described method, the user recognizes that the third object 635 and the fourth object 645 are positioned at the positions where the images are formed, respectively, and in the drawing, each of them is located in front of the display 180.

In this case, it is recognized that the fourth object 645 is projected ahead of the third object 635, that is, more protruding from the fourth object 635, which is the distance between the fourth left eye images 641 and L and the fourth right eye images 643 and R. d4) is larger than the distance d3 between the third left eye images 631 and L and the third right eye images 633 and R.

Meanwhile, in the exemplary embodiment of the present invention, the distance between the display 180 and the objects 615, 625, 635, and 645 recognized by the user is expressed as a depth. Accordingly, the depth when the user is recognized as if it is located behind the display 180 has a negative value (-), and the depth when the user is recognized as if it is located before the display 180. (depth) is assumed to have a negative value (+). That is, the greater the degree of protrusion in the direction of the user, the greater the size of the depth.

Referring to FIG. 8, the distance a between the left eye image 701 and the right eye image 702 of FIG. 8A is the distance between the left eye image 701 and the right eye image 702 shown in FIG. 8B. When (b) is smaller, it can be seen that the depth b 'of the 3D object of FIG. 8 (b) is larger than the depth a' of the 3D object of FIG. 8 (a).

As such, when the 3D image is exemplified as the left eye image and the right eye image, a position recognized as image formation from the user's point of view varies depending on the distance between the left eye image and the right eye image. Therefore, by adjusting the display interval of the left eye image and the right eye image, it is possible to adjust the depth of the 3D image or 3D object composed of the left eye image and the right eye image.

9 is a diagram illustrating a 3D viewing apparatus and an image display apparatus according to an exemplary embodiment of the present invention, and FIG. 10 is an internal block diagram of the 3D viewing apparatus and the image display apparatus of FIG. 9.

9 and 10, the 3D viewing apparatus 195 according to an embodiment of the present invention includes a power supply unit 910, a switch 918, a controller 920, a wireless communication unit 930, and a left eye glass 940. ), The right eye glass 960 may be included.

The power supply unit 910 supplies power to the left eye glass 940 and the right eye glass 960. 4 to 6, the driving voltage VthL is applied to the left eye glass 940, and the driving voltage VthR is applied to the right eye glass 960. According to the driving voltages VthL and VthR applied, the liquid crystal arrays in the left eye glass 940 and the right eye glass 960 may be changed, and accordingly, the left eye glass 940 and the right eye glass 960 are open. Can be.

The power supply unit 910 may supply operation power for the operation of the controller 920 and the wireless communication unit 930 in the 3D viewing apparatus 195.

The switch 918 is used to turn on or off the operation of the 3D viewing apparatus 195. In particular, it is used to turn on or off the operating power supply. When the switch 918 is turned on, the power supply unit 910 operates to supply the corresponding power to the controller 920, the wireless communication unit 930, the left eye glass 940, and the right eye glass 960.

The controller 920 synchronizes the left eye image frame and the right eye image frame displayed on the display 180 of the image display apparatus 100 with the left eye glass 940 and the right eye glass 960 of the 3D viewing apparatus 195. It can be controlled to open and close. In this case, the left eye glass 940 and the right eye glass 960 may be opened and closed in synchronization with the synchronization signal Vsync received from the wireless communication unit 198.

On the other hand, when the image displayed on the image display apparatus 100 is a 3D image, the controller 920 alternately opens the left eye glass 940 and the right eye glass 960 in synchronization with the received synchronization signal Vsync. Can be controlled or closed.

In addition, the controller 920 may control operations of the power supply unit 910 and the wireless communication unit 930. When the switch 918 is turned on, the controller 920 may control the power supply 910 to operate to supply power to each component.

The controller 920 may control the wireless communication unit 930 to transmit the pairing signal to the image display apparatus 100 for pairing with the image display apparatus 100. Alternatively, the pairing signal may be received from the image display apparatus 100.

The wireless communication unit 930 may transmit or receive data to and from the wireless communication unit 198 of the image display apparatus 100 using the image display apparatus 100 and the IR (InfraRed) or RF (Radio Frequency) scheme. Can be. In particular, the synchronization signal Vsync for opening and closing the left eye glass 940 and the right eye glass 960 may be received from the wireless communication unit 198 of the image display apparatus 100. According to the synchronization signal Vsync, the opening and closing operations of the left eye glass 940 and the right eye glass 960 are controlled.

The wireless communication unit 930 may transmit or receive a pairing signal with the video display device 100. In addition, the synchronization signal Vsync may be received from the image display apparatus 100. In addition, it is also possible to transmit a signal whether the 3D viewing apparatus 195 is used to the image display apparatus 100.

The left eye glass 940 and the right eye glass 960 may be active left eye glasses and active right eye glasses that open according to an electric signal (voltage or current) applied thereto. The 3D viewing apparatus 195 may be a shutter glass type as described above.

As described above, the image display apparatus 100 may include a wireless communication unit 198, a controller 170, a display 180, and the like. Hereinafter, the operation with the 3D viewing apparatus 195 will be described.

When the 3D viewing apparatus 195 is detected, the wireless communication unit 198 in the image display apparatus 100 may transmit a pairing signal for pairing with the 3D viewing apparatus 195. In addition, a response signal may be received from the 3D viewing apparatus 195.

The wireless communication unit 198 in the image display apparatus 100 may transmit a synchronization signal Vsync to the 3D viewing apparatus 195. In addition, a signal indicating whether the type of the displayed image is a 2D image or a 3D image may be transmitted. As a result, the left eye glass 940 and the right eye glass 960 of the 3D viewing apparatus 195 may be opened or closed simultaneously.

Meanwhile, when there are a plurality of 3D viewing apparatuses, the wireless communication unit 198 in the image display apparatus 100 may transmit corresponding sync signals. In addition, audio signals for audio output of each 3D viewing apparatus may be transmitted.

On the other hand, the control unit 170 in the video display device 100 controls to output the above-described pairing signal, synchronization signal, or audio signal.

Meanwhile, in the wireless communication between the image display apparatus 100 and the 3D viewing apparatus 195, various methods such as infrared communication, RF communication, and Bluetooth communication may be used.

11 is a flowchart illustrating a method of operating an image display apparatus according to an exemplary embodiment of the present invention, and FIGS. 12 to 16 are views for explaining various examples of the method of operating the image display apparatus of FIG. 11.

Referring to FIG. 11, first, a 3D image is received (S1110). The external image input to the image display device 100 may be a broadcast image from a broadcast signal received by the tuner 110, an external input image from an external device, an image stored in the storage 140, or a content provider through a network. It may be an input image.

The input image may be demodulated by the demodulator 120 to be signal processed by the controller 170 or may be directly input to the controller 170. As described above, the controller 170 performs demultiplexing, decoding, and the like.

The controller 170 is input by referring to 3D video flag or 3D video metadata or format information of the 3D video in the header of the stream indicating that the 3D video is a 3D video. It may be determined whether the image is a 3D image.

If it is not a 3D image, the following frame rate conversion step (S1120) or asymmetric alignment (S1130) or less is not performed.

In the case of a 3D image, the controller 170 processes the 3D image.

12A illustrates image frames of a 3D image processed by the image processor 320. In this case, it can be seen that the format of the 3D image frame 1210 is a top / down format (refer to FIG. 4B).

Next, when the received video is a 3D video, the frame rate is converted (S1120). The frame rate converter 350 converts the frame rate of the 3D video. For example, a frame rate of 60 Hz is converted to 120 Hz or 240 Hz or 480 Hz.

12B illustrates that the frame rate converter 350 increases the frame rate of the 3D image. The frame rate converter 350 increases the frame rate by repeatedly inserting the 3D image frame 1220. At this time, the format of the 3D image is maintained as the top-down format.

12B illustrates an example in which the frame rate is increased by 8 times, but is not limited thereto, and may be increased by various settings.

Next, the left eye image frame and the right eye image frame of the 3D image are asymmetrically aligned (S1130). The formatter 360 arranges any one of the left eye image frame and the right eye image frame of the 3D image more asymmetrically. The asymmetric alignment is based on the premise that the left eye image frame and the right eye image frame are alternately arranged in time. That is, it converts to the frame sequential format illustrated in FIG.

12 (c) shows that the formatter 360 converts the format of the 3D video frame, which is frame rate converted 8 times by the frame rate converter 350, into a 3D video frame having a frame sequential format, and includes a left eye video frame and a right eye. An example of arranging image frames asymmetrically is illustrated.

12 (c) shows a first left eye video frame L1 1230, a first left eye video frame L1, a first left eye video frame L1, a first left eye video frame L1, and The first right eye image frame R1, the first left eye image frame L1, the first left eye image frame L1, and the first left eye image frame L1 are arranged in this order. That is, seven identical left eye image frames are arranged and the remaining one right eye image frame is arranged. In this way, the number of left eye image frames and right eye image frames are arranged asymmetrically.

In the asymmetrical arrangement, unlike in FIG. 12C, six identical left eye image frames may be arranged and two identical right eye image frames may be arranged.

In the asymmetrical arrangement used in the embodiment of the present invention, even if the user who does not wear the 3D viewing device 195 is arranged and displayed as a 3D video frame in a frame sequential format, the asymmetric array is not recognized and recognized as a 2D video frame. The purpose is to do that. Therefore, it is preferable that the difference between the number of left eye image frames and right eye image frames is at least three or more. Alternatively, the number ratio of the left eye image frame to the right eye image frame is preferably 1: 3 or more.

On the other hand, when frame rate conversion is performed four times by the frame rate converter 350, three identical left eye image frames may be arranged and one right eye image frame may be arranged.

Meanwhile, the arrangement order of the right eye image frame R1 illustrated in FIG. 12C may be disposed anywhere regardless of the drawing.

On the other hand, it is also possible to arrange a black frame between the frame rate-converted frames.

FIG. 12 (d) exemplifies disposition of even-numbered frames as black frames, compared with FIG. 12 (c). Accordingly, as shown in the drawing, the first left eye image frame (L1) 1240, the black frame (B), the first left eye image frame (L1), the black frame (B), the first right eye image frame (R1), black It shows arrangement in the order of the frame (B), the first left eye image frame (L1), the black frame (B). That is, three identical left eye image frames are arranged, three black frames B and one remaining eye image frame are arranged. In this way, the number of left eye image frames and right eye image frames are arranged asymmetrically.

Meanwhile, the arrangement order of the right eye image frame R1 illustrated in FIG. 12 (d) may be disposed anywhere regardless of the drawing.

Next, asymmetrically aligned left eye images and right eye images are displayed (S1140). In operation S1150, a synchronization signal according to the asymmetrically aligned left eye image and right eye image is transmitted.

The formatter 360 outputs asymmetrically aligned left eye image frames and right eye image frames, and the display 180 sequentially displays asymmetrically aligned left eye image frames and right eye image frames. For example, when the display 180 includes a liquid crystal panel and a backlight lamp, the backlight lamp is turned on for each image frame. As a result, both the left eye image frame and the right eye image frame are asymmetrically aligned.

The formatter 360 may output a synchronization signal Vsync for opening the left eye glass and the right eye glass of the 3D display apparatus 195. The synchronization signal Vsync can be output in synchronization with the frame rate. For example, when the frame rate is 480 Hz, a synchronization signal may be output every 1/480 seconds. Alternatively, a synchronization signal for synchronizing with the left eye image frame and the right eye image frame may be output. That is, the left eye image frame synchronization signal may be output every 1/480 seconds, and the right eye image frame synchronization signal may be output every 1/480 seconds. Accordingly, the interval of the entire synchronization signal may be 1/240 seconds.

13 and 14 illustrate the display of asymmetrically aligned left eye image frames and right eye image frames, and accordingly output of a synchronization signal.

First, FIG. 13A illustrates that a left eye image frame and a right eye image frame are output every 1/480 second within a 1/60 second reference frame as shown in FIG. 12C. In particular, 7 left eye image frames L1 are displayed for 1/60 second, and one right eye image frame R1 is displayed for 5/480 seconds.

Accordingly, the formatter 360 outputs a synchronization signal synchronized with the first left eye image frame L1 and the right eye image frame R1, respectively, as shown in FIG. 13 (b).

Accordingly, the 3D viewing apparatus 195 illustrates opening the left eye glass in synchronization with the first left eye image frame L1 and opening the right eye glass in synchronization with the right eye image frame R1. In other video frames, both the left eye glass and the right eye glass of the 3D viewing apparatus 195 are closed to prevent crosstalk.

Accordingly, a user wearing the 3D viewing apparatus 195 may watch a 3D image.

On the other hand, a user who does not wear a 3D viewing device displays seven left eye image frames and one right eye image frame for 1/60 seconds, that is, the left eye image frame and the right eye image frame are displayed asymmetrically. It may be recognized that only the left eye image frame is displayed. In particular, the left eye image frame and the right eye image frame differ only in the positions of some objects, and since they are mostly overlapping images, there is little heterogeneity, making it difficult to recognize the difference. That is, it can be recognized that eight left eye image frames are displayed for 1/480 seconds. Meanwhile, the viewer wearing the 3D viewing apparatus recognizes that the 3D image frame (including the left eye image frame and the right eye image frame) is displayed for 1/480 seconds.

On the other hand, as the frame rate increases, the frequency of the synchronization signal increases, thereby reducing the opening time of the left eye glass and the right eye glass. To alleviate this phenomenon, a technique of inserting a black frame between image frames may be used, as shown in FIG. 12 (d).

FIG. 14A illustrates that the left eye image frame and the right eye image frame are output every 2/480 seconds within the 1/60 second reference frame as shown in FIG. 12 (d). In addition, a black frame is output between each image frame, that is, every 2/480 seconds. Specifically, three left eye image frames L1 are displayed, four black brains B are displayed, and one right eye image frame R1 is displayed at 5/480 seconds for 1/60 second. do.

Accordingly, the formatter 360 outputs a synchronization signal synchronized with the first left eye image frame L1 and the right eye image frame R1, respectively, as shown in FIG. 14 (b).

Accordingly, the 3D viewing device 195 opens the left eye glass in synchronization with the period of the first left eye image frame L1 and the first black frame B, and synchronizes with the right eye image frame R1 and the third black frame B. FIG. Illustrate opening the right eye glass. In other video frames, both the left eye glass and the right eye glass of the 3D viewing apparatus 195 are closed to prevent crosstalk.

In comparison with FIG. 13, the opening time of the left eye glass or the opening time of the right eye glass can be increased due to the insertion of the black frame. Accordingly, the open time error can be reduced as compared with FIG. 13.

Meanwhile, a user wearing the 3D viewing device 195 may watch a 3D image, and a user who does not wear the 3D viewing device displays three left eye image frames and four black frames for 1/60 seconds. Since one right eye image frame is displayed, that is, the left eye image frame and the right eye image frame are displayed asymmetrically, it can be recognized that only the left eye image frame is displayed.

FIG. 15 illustrates that eight image frames (including a left eye image frame and a right eye image frame) are displayed during a reference frame, that is, 1/60 second. That is, an example of displaying an image frame every 1/480 seconds. This may correspond to FIG. 13.

As shown in FIG. 13, seven left eye image frames 1510, 1520, 1530, 1540, 1560, 1570, and 1580 are displayed during the first to eighth periods t1 to t8, and one right eye image frame 1550. ) May be displayed. In detail, the right eye image frame 1550 may be displayed in the fifth period t5.

In this case, the 3D viewing device 195 opens the left eye glass in synchronization with the first period t1, and opens the right eye glass in synchronization with the fifth period t5. Accordingly, the user wearing the 3D viewing apparatus views the 3D image by combining the left eye image frame 1510 and the right eye image frame 1550.

On the other hand, a user who does not wear the 3D viewing apparatus 195 may view a 2D image because only the left eye image frame is displayed due to the seven left eye image frames.

Meanwhile, an object indicating that the displayed image is a 3D image is displayed (S1160).

When the 3D image is displayed, the display unit 180 displays an object indicating that the displayed image is a 3D image to inform the user of the 3D image.

As described above, when the received image is a 3D image, the image is asymmetrically arranged and displayed so that it is difficult for a user who does not wear the 3D viewing device 195 to recognize it. Therefore, in order to induce the user to wear the 3D viewing apparatus 195, an object indicating that the displayed image is a 3D image may be displayed.

Such an object may be generated in the OSD generator 340 in the controller 170.

FIG. 16 illustrates that when the image 1610 and the 3D object 1615 are displayed on the display 180, the object 1610 indicating that the image is a 3D image is displayed. As a result, the user can wear the 3D viewing apparatus. On the other hand, the object 1610 may be displayed in the form of an icon, unlike the figure. It is also possible to notify this by audio output.

The image display apparatus and the operation method thereof according to the present invention are not limited to the configuration and method of the embodiments described above, but the embodiments may be applied to all or some of the embodiments May be selectively combined.

Meanwhile, the operation method of the image display apparatus of the present invention can be implemented as a code that can be read by a processor on a recording medium readable by a processor 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, although the preferred embodiment of the present invention has 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.

Claims (12)

Receiving a 3D image;
Converting a frame rate of the 3D image;
Asymmetrically aligning any one of a left eye image frame and a right eye image frame of the frame rate-converted 3D image; And
And displaying the asymmetrically aligned left eye image frame and right eye image frame on a display. The method of claim 1,
The asymmetrical alignment step,
And one of the left eye image frame and the right eye image frame is repeatedly arranged. The method of claim 1,
And transmitting a synchronization signal synchronized with any one of the asymmetrically aligned left eye image frame and the right eye image frame, respectively, to the left eye image frame and the right eye image frame. The method of claim 1,
The display step,
And turning on a backlight lamp of the display for each of the image frames. The method of claim 1,
The asymmetrical alignment step,
And disposing a black frame between each of the image frames. The method of claim 1,
And displaying an object indicating that the displayed image is a 3D image on the display. A frame rate converter for converting a frame rate of the received 3D image; And
A formatter arranged to asymmetrically arrange one or more of a left eye image frame and a right eye image frame of the frame rate-converted 3D image; And
And a display for displaying the asymmetrically aligned 3D image. The method of claim 7, wherein
The formatter,
And one of the left eye image frame and the right eye image frame is repeatedly arranged. The method of claim 7, wherein
The formatter,
And outputting a synchronization signal synchronized with one of the asymmetrically aligned left eye image frame and right eye image frame, respectively. The method of claim 7, wherein
The display,
Equipped with a backlight lamp,
And the backlight lamp is turned on for each of the image frames. The method of claim 7, wherein
The formatter,
And a black frame further disposed between each of the image frames. The method of claim 7, wherein
The display,
And displaying on the display an object indicating that the displayed image is a 3D image.

Images