KR101657564B1 - Apparatus for displaying image and method for operating the same - Google Patents

Abstract

The present invention relates to an image display apparatus and an operation method thereof. A method of operating an image display apparatus according to an exemplary embodiment of the present invention includes detecting whether a 3D image signal is included in at least one of a received broadcast signal and an external input signal from an external device, Generating a 3D image list with the 3D image list, and displaying the 3D image list. As a result, the 3D image list can be easily grasped.

Description

TECHNICAL FIELD [0001] The present invention relates to an image display apparatus and a method of operating the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display apparatus, and more particularly, to an image display apparatus or image display method capable of easily grasping a 3D image list.

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

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

In addition, various studies on stereoscopic images have been conducted recently, and stereoscopic image technology has become more common and practical in various other environments and technologies as well as computer graphics.

It is an object of the present invention to provide an image display apparatus and an operation method thereof that can easily grasp a 3D image list.

According to another aspect of the present invention, there is provided a method of operating a video display device, including: detecting whether a 3D video signal is included in at least one of a received broadcast signal and an external input signal from an external device; Generating a 3D image list based on the 3D image signal, and displaying the 3D image list.

According to another aspect of the present invention, there is provided an image display apparatus including a tuner for receiving a broadcast signal corresponding to a selected broadcast channel or a previously stored broadcast channel, an external device for receiving an external signal from the external device, A controller for detecting whether a 3D image signal is contained in at least one of a broadcast signal and an external input signal and generating a 3D image list based on the detected 3D image signal, and a display for displaying a 3D image list do.

According to the embodiment of the present invention, a 3D image list is generated from at least one of a received broadcast signal and an external input signal from an external device, and by displaying the 3D image list, the 3D image list can be easily grasped.

On the other hand, when a 3D image list is generated, it can be generated according to a priority order and displayed, and a list generated according to a user's taste can be provided.

1 is an internal block diagram of an image display apparatus according to an embodiment of the present invention.
2 is an internal block diagram of the control unit of FIG.
3 is a diagram referred to explain various examples of the 3D image detection method in the control unit of FIG.
4 is a view showing various formats of a 3D image output from the formatter of FIG.
FIG. 5 is a diagram referred to explain the scaling of a 3D image output from the formatter of FIG.
6 is a flowchart illustrating an operation method of an image display apparatus according to an embodiment of the present invention.
FIGS. 7 to 13 are views referred to explain various examples of the operation method of the image display apparatus of FIG.

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

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

1 is an internal block diagram of an image display apparatus according to an embodiment of the present invention.

1, an image display apparatus 100 according to an exemplary embodiment of the present invention includes a tuner 110, a demodulator 120, an external device interface 130, a network interface 135, 140, a user input interface unit 150, a control unit 170, a display 180, and an audio output unit 185.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

For example, the user input interface unit 150 may transmit a user input signal input from a sensing unit (not shown) that senses the gesture of the user to the control unit 170 or a signal from the control unit 170 (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 control unit 170 demultiplexes the input stream or processes the demultiplexed signals through the tuner 110 or the demodulation unit 120 or the external device interface unit 130 to generate a signal for video or audio output Can be generated and output.

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

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

Although not shown in FIG. 1, the controller 170 may include a demultiplexer, an image processor, and the like. This will be described later with reference to FIG.

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

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

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

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

Meanwhile, the control unit 170 may control the display 180 to display an image. For example, a broadcast image input through the tuner 110, an external input image input through the external device interface unit 130, an image input through the network interface unit, or an image stored in the storage unit 140 is displayed 180 As shown in Fig.

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

The control unit 170 detects whether a 3D video signal is contained in at least one of a broadcast signal received from the tuner 110 and an external input signal from an external device, A list is generated, and a 3D image list is displayed. Meanwhile, the control unit 170 may generate a 2D list in addition to the 3D list.

The external input signal may include an input signal from an external device input through the external device interface unit 130 as well as an input signal from a network input through the network interface unit 135. [

The 3D image list and the like will be described later with reference to FIG.

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

On the other hand, the 3D object is processed so as to have a different depth from the image displayed on the display 180. [ Preferably the 3D object is projected relative to the image displayed on the display 180.

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

Although not shown in the drawing, a channel browsing processing unit for generating a channel signal or a thumbnail image corresponding to an external input signal may be further provided. The channel browsing processing unit receives the stream signal TS output from the demodulation unit 120 or the stream signal output from the external device interface unit 130 and extracts an image from an input stream signal to generate a thumbnail image . The generated thumbnail image may be directly or encoded and input to the controller 170. In addition, the generated thumbnail image may be encoded in a stream format and input to the controller 170. The control unit 170 may display a thumbnail list having a plurality of thumbnail images on the display 180 using the input thumbnail image.

The display 180 converts an image signal, a data signal, an OSD signal processed by the control unit 170 or a video signal and a data signal received from the external device interface unit 130 into R, G, and B signals, respectively, Signal.

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

To this end, the display 180 can be divided into an additional display method and a single display method.

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

Meanwhile, the additional display method can implement a 3D image using an additional display in addition to the display 180. For example, various methods such as a head mount display (HMD) type and a glasses type can be applied. The spectacle type may be a polarizing spectacle type, a shutter glass type, a spectral filter type, or the like.

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

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

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

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

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. Also, the remote control apparatus 200 can receive the video, audio, or data signal output from the user input interface unit 150 and display it or output it by the remote control apparatus 200.

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

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

Meanwhile, the 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 actually implemented. That is, two or more constituent elements may be combined into one constituent element, or one constituent element may be constituted by two or more constituent elements, if necessary. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and apparatuses do not limit the scope of the present invention.

FIG. 2 is an internal block diagram of the control unit of FIG. 1, FIG. 3 is a diagram referred to explain various examples of the 3D image detection method in the control unit of FIG. 1, FIG. 5 is a diagram for explaining scaling of a 3D image output from the formatter of FIG. 2. FIG.

The controller 170 according to an exemplary embodiment of the present invention includes a demultiplexer 210, an image processor 220, an OSD generator 240, a mixer 250, a formatter 260, a 3D image detector 270, , And a list generating unit 280. [ A voice processing unit (not shown), and a data processing unit (not shown).

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

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

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

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

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

Also, for example, if the demultiplexed 2D video signal is a video signal of the H.264 standard according to the DMB (Digital Multimedia Broadcasting) scheme or DVB-H, it can be decoded by the H.264 decoder.

Also, for example, if the demultiplexed video signal is a depth image of MPEC-C part 3, it can be decoded by an MPEC-C decoder. Also, the disparity information may be decoded.

For example, if the demultiplexed video signal is a multi-view video according to MVC (Multi-view Video Coding), it can be decoded by an MVC decoder.

Also, for example, if the demultiplexed video signal is a free view image according to FTV (Free-viewpoint TV), it can be decoded by the FTV decoder.

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

Meanwhile, the video signal decoded by the video processing unit 220 may be a 3D video signal in various formats as described above. For example, a 3D image signal composed of a color image and a depth image, or a 3D image signal composed of a plurality of view-point 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 includes a side-by-side format (FIG. 4A) in which the left-eye video signal L and the right-eye video signal R are arranged left and right as shown in FIG. 4, A top / down format (FIG. 4C) in which the left and right eye image signals and the right eye image signals are arranged in an interlaced format (FIG. 4B) 4d), a checker box format (FIG. 4e) for mixing the left eye image signal and the right eye image signal box by box, and the like.

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

The mixer 250 may mix the OSD signal generated by the OSD generator 240 and the decoded video signal processed by the image processor 220. At this time, the OSD signal and the decoded video signal may include at least one of a 2D signal and a 3D signal. The mixed signal is provided to formatter 260.

The formatter 260 receives the mixed signal, i.e., the OSD signal and the decoded video signal, from the mixer 250, and separates the 2D video signal and the 3D video signal. Then, the 3D video signal can be separated into video signals at a plurality of points in time. For example, the left eye image signal and the right eye image signal can be separated.

At this time, the interval between the left eye image signal and the right eye image signal may correspond to the depth of the corresponding 3D image signal. The greater the depth, that is, the more the projection is made to the user, the narrower the gap between the left eye image signal and the right eye image signal can be. For example, the interval may be narrowed and overlapped.

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

In this specification, the depth of the 3D object protruding in the user direction is set to +, and the depth of the 2D image or the 3D image displayed on the display 180 or the display 180 is set to zero. Also, the depth of a 3D object displayed as if it is located behind a 2D image or 3D image set to a depth of 0 is set to -. The depth of the 3D object becomes larger as it is projected toward the viewer direction.

On the other hand, the formatter 260 can determine whether it is a 3D video signal. Whether the 3D video signal is a 3D video signal can be determined by referring to a 3D video flag or 3D video meta data or format information in a header of a stream indicating that the video signal is a 3D video, .

The 3D image flag, the 3D image metadata, or the format information of the 3D image may include position information, area information, or size information of the 3D image in addition to the 3D image information.

On the other hand, the format information of the 3D image flag, the 3D image metadata, or the 3D image can be demultiplexed by the demultiplexing unit 210 and input to the formatter 260.

On the other hand, the formatter 260 can change the format of the 3D image by reassembling the 3D image signal of the predetermined format based on the format information of the 3D image. That is, it can be changed to any one of the various formats illustrated in FIG.

For example, when the format of the 3D video signal input to the formatter 260 is a side-by-side format, it can be changed to a top / down format by the user's choice Do.

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

On the other hand, the depth variation of the formatter 260 corresponds to varying (or varying the degree of overlapping) the distance between the left eye image and the right eye image of the object. On the other hand, the slope may be varied. See FIG. 5 for variables such as tilt.

The 3D image detecting unit 270 detects whether a 3D image signal is contained in the demultiplexed signal in the demultiplexing unit 210. Whether or not the 3D video signal is a 3D video signal can be detected with respect to a broadcast signal received from the tuner 110, an external input signal from an external device, or an external input signal received via a network.

Whether or not the 3D image signal is a 3D image signal may be determined based on a 3D image flag or 3D image metadata in the header of the stream indicating that the corresponding image signal is a 3D image or format information of the 3D image As shown in FIG. This will be described with reference to FIG.

3 is a diagram referred to explain various examples of the 3D image detection method in the control unit of FIG.

3 (a) shows a video format of the MPEG-2 standard (ISO 13818-2 standard). Referring to the drawings, a range of "picture start code", "slice start code", etc. and a value thereof is disclosed. Of these, there are portions that are "reserved ", and at least one of these portions may include information indicating whether the 2D image is a 3D image or not. In the case of a 3D image, 3D format information (see FIG. 4) may also be included. But it is also possible to include it in other parts than those shown in Fig. 3 (a).

As described above, the 3D image detecting unit 270 irradiates a predetermined "reserved" portion of the image signal of the MPEG-2 standard at the time of demultiplexing or demultiplexing to detect whether or not the image is a 3D image can do.

Next, FIG. 3 (b) shows the header packet standard of the HDMI. In the drawing, "HDMI_Video_Format" and the like are disclosed, and in particular, "3D_structure" is disclosed. This can be used to indicate whether it is a 2D or 3D image.

Accordingly, the 3D image detecting unit 270 can detect whether the external input image is a 3D image by examining "3D_structure" in the header packet standard of HDMI when demultiplexing or demultiplexing.

In addition, in the case of a broadcast image, it is possible to determine whether a 3D image is obtained through PSI / PSIP / SI Table Header and Packet Data in Video PES.

Specifically, a 1-bit field for a 2D image or a 3D image can be utilized in the VCT Table constituting the virtual information of the corresponding channel of the PSIP. The 3D image detecting unit 270 detects whether the 3D image is a 3D image or not .

If the service number of the corresponding channel of the SI is available, the 1-bit field for the 2D image or the 3D image can be utilized in the SDT Table constituting the information of the corresponding service. The 3D image detecting unit 270, Or not.

In addition, 3 bits including 2 bits indicating 2d / 3d and 2 bits indicating left and right eye (L / R) video may be utilized in the PMT header of the PSI. It is possible to detect whether the 3D image is a 3D image or not.

3A, the IPTV or the like received through the network interface unit 135 may utilize a portion reserved in the MPEG-2 standard, and the 3D image detection unit 270 may use the " It is possible to detect whether or not it is a 3D image.

The list generating unit 280 generates a list as detected by the 3D image detecting unit 270. When an external signal or a broadcast signal is a 3D signal, the 3D signal is included in the 3D image list to generate a 3D list. It is also possible to separately generate a list for each broadcast signal or each external signal.

It is also possible to generate a 2D image list in addition to the 3D image list. Since the 3D image detecting unit 270 can simultaneously perform 2D image detection in addition to 3D image detection, it is possible to generate a 2D image list based on the 2D image detection. It is also possible to generate a list separately for each broadcast signal or external signal in the 2D image list.

The list display unit 280 may generate a list that is a mixture of a 3D image list and a two-image list.

3D image list creation and the like can be performed by inputting a specific key. For example, the user input interface unit 150 receives an input of a specific key (for example, a color key) in the remote control apparatus 200, 280 can generate the corresponding list.

The generated list is input to the mixer 250 and displayed on the display via the formatter 260. The formatter 260 may process the generated list in 3D and display it.

Although the OSD generator 240 and the list generator 280 are separately shown in the drawing, the OSD generator 240 may generate the 3D image list and the like without the list generator separately.

Figure 5 illustrates scaling of various schemes of 3D video signals.

The 3D object 410 in the 3D image signal or the 3D image signal can be entirely enlarged or reduced 413 at a predetermined ratio as shown in FIG. 5 (a). In addition, as shown in FIG. 5 (b) It may be enlarged or reduced (trapezoidal shape, 416). 5 (c), at least a part of the 3D object may be rotated (parallelogram shape 419). 3D effect can be emphasized on a 3D object in a 3D image signal or a 3D image signal through such scaling (size adjustment) or tilt adjustment.

As described above, increasing the slope is advantageous in that the difference in length between the parallel sides of the trapezoidal shape 416 increases as shown in Fig. 5 (b) It can mean something.

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

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

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

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

2, a mixer 250 mixes signals from the OSD generator 240 and the image processor 220 and performs a 3D process in the formatter 260. However, the present invention is not limited thereto, It is also possible to place it behind the formatter. That is, the output of the image processing unit 220 is 3D-processed by the formatter 260. The OSD generating unit 240 performs 3D processing together with the OSD generation, and then the 3D signals processed by the mixer 250 are mixed It is also possible to do.

Meanwhile, the 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 can be integrated, added, or omitted according to the specifications of the control unit 170 actually implemented.

FIG. 6 is a flowchart showing an operation method of an image display apparatus according to an embodiment of the present invention, and FIGS. 7 to 13 are drawings referred to explain various examples of an operation method of the image display apparatus of FIG.

Referring to FIG. 6, in step S605, it is determined whether there is a 3D channel search input while a predetermined image is displayed.

The predetermined image may be a broadcast image, an external input image, a stored image, or an image input from a content provider. The image may be a still image or a moving image, and may be a 2D image or a 3D image.

Meanwhile, when a predetermined image is displayed on the display 180, it is determined whether the input of the user is a 3D channel search input. The channel search input may be, for example, an automatic channel search input. Or a 3D channel search by a specific key input. Figure 7 illustrates an automatic channel search input.

Next, if there is a 3D channel search input, it is detected whether a 3D video signal is included in the broadcast signal (S610).

FIG. 7 illustrates retrieving a 2D channel and a 3D channel according to an automatic channel search. As shown in FIG. 7 (a), when there is an automatic channel search input while a predetermined broadcast image (DTV 7-1) 710 is displayed, an automatic channel search can be performed as shown in FIG. 7 (b). When the automatic channel search screen 720 is displayed, the automatic channel search progress screen 730 may be displayed in a pop-up format.

It is possible to detect whether the broadcast signal of the corresponding channel includes the 3D video signal or the 2D video signal while performing the automatic channel search.

That is, it is possible to receive broadcast signals corresponding to previously stored channels, and detect whether a 3D video signal is included in the broadcast signal based on a flag, header information, or metadata indicating that the 3D video is included in the received broadcast signal .

Meanwhile, in FIG. 7 (b), the number of 3D channels is five and the number of 2D channels is fifteen among the twenty channels in which automatic channel search is performed.

Next, a 3D image list is generated based on the detected 3D image signal (S615).

The 3D image list can be performed in the list generation unit 280 in the control unit 170 as described above. On the other hand, a 2D image list may be generated in addition to the 3D image list.

FIG. 8 illustrates that a list generated after automatic channel search is displayed. The generated list may be displayed in step 640, which will be described later. However, the present invention is not limited to this, and it is also possible to display the generated list after the 3D image list generation is completed based on the broadcast signal.

8B illustrates a 2D image list 820 and a 3D image list 830 displayed on the display 180 as part of the display 180. FIG. Quot; region "

It is possible to display only the 3D image list 830 according to the input of the specific key. Also, the 3D image list 830 may be displayed as a 3D object. That is, it may be displayed so as to have a different depth from the image 810 displayed on the display.

On the other hand, after the automatic channel search of FIG. 7 (b) is completed, the 3D video list may be displayed in a part of the display area of the previous broadcast video (DTV7-1) as shown in FIG. 8 (b) Alternatively, in a state in which the channel search completion screen is displayed, the 3D image list may be displayed in a pop-up format.

Next, an object indicating whether or not the external apparatus is additionally detected is displayed on the display (S620).

FIG. 9 illustrates whether or not additional detection of a 3D image in an external apparatus is performed. 9A, when an automatic channel search for a broadcast channel is completed, an object 920 indicating whether automatic channel search completion and addition are detected is displayed in a pop-up format in a state in which an automatic channel search screen 910 is displayed .

On the other hand, it is possible to perform additional detection of the external device automatically, unlike the drawing. For example, if the search priority is from the broadcast image, it is also possible that the search for the external input image is performed automatically after the search for the broadcast image is completed.

It is determined whether there is an external device additional search input (S625). If there is the corresponding input, it is detected whether a 3D image signal is included in the external input signal (S630).

It is possible to detect whether or not a 3D video signal is included in the external input signal by the user's specific input. The external input signal at this time may be an external input image signal input through the external device interface unit 130 or the network interface unit 135.

FIG. 9B illustrates retrieving an external input image from an external device according to an external device search input. In the state in which the automatic channel search screen 910 is displayed, the external device search progress screen 930 may be displayed in a pop-up format.

It is possible to detect whether the broadcast signal of the corresponding channel includes the 3D video signal or the 2D video signal while performing the automatic channel search.

That is, it receives external input signals input through the external device interface unit 130 or the network interface unit 135, and outputs a broadcast signal based on a flag, header information or metadata indicating that the 3D image is included in the received external input signal It is possible to detect whether the 3D video signal is included in the signal.

On the other hand, in FIG. 9 (b), the number of 3D images is two and the number of 2D images is three among five external inputs in which external device search is performed.

The 3D image list is generated based on the detected 3D image signal (S635), and the generated 3D image list is displayed (S640).

The 3D image list can be performed in the list generation unit 280 in the control unit 170 as described above. On the other hand, a 2D image list may be generated in addition to the 3D image list.

FIG. 10 illustrates that a list generated after an external device search is displayed.

10 (b) illustrates a 2D image list 1020 and a 3D image list 1030 displayed on the display 180. In this case, As shown in Fig.

It is possible to display only the 3D image list 1030 according to the input of the specific key. In addition, the 3D image list 1030 may be displayed as a 3D object. That is, they may be displayed to have different depths from the image 1010 displayed on the display.

11 illustrates that only a 3D image list 1130 is displayed in a state that a predetermined image 1110 is displayed according to an input of a specific key. The 3D list of FIG. 11 includes a 3D image of a broadcast image corresponding to a broadcast channel and an external input image according to an external apparatus, but it is also possible to separately display a broadcast image or an external input image .

On the other hand, when the 3D image list is displayed and the user has the up / down key input, up / down can be performed in the corresponding list. Thereby, the user can continuously select and view only the 3D image.

In addition, as the user rolls an item in the 3D image list according to the up / down key input, the corresponding image can be displayed as a 3D image.

Fig. 12 exemplifies setting the search order of 3D images.

7 to 10 illustrate that an external input image of an external device is separately searched after an automatic channel search of a broadcast channel to perform a 3D image search, but the user can set priorities in a desired order.

FIG. 12A illustrates that the "3D search order setting" item 1215 is included in the automatic channel search screen 1210. When the user selects this item 1215, priority can be set as shown in Fig. 12 (b).

12 (b) illustrates an object 1225 for setting priorities for each broadcast type and external input type. In addition, the priority can be changed for each preferred channel or preferred external device preset by the user. It is possible to automatically set the highest priority to the channel that has started broadcasting or the channel that has been terminated based on the recently viewed channel or external device or based on the EPG. Accordingly, the list can be provided according to the user's taste.

Figure 13 illustrates displaying a 3D image list on a display via a remote control device.

13 (a), when one of the color keys 1305 in the remote control device 200 is set as a hot key of the 3D image list, The 3D image list 1320 may be displayed in at least one region of the 3D image list 1320. [ In the drawing, it is illustrated that a 3D image list 1320 is displayed in one area in a state where a broadcast image (DTV 7-1) 1310 is displayed. In the drawing, the 3D image list 1320 includes only 3D broadcasts among broadcast channels. However, the present invention is not limited thereto. As described above, it is also possible to further include a 3D image list among external input images.

On the other hand, when there is an input of the up / down keys in the remote control device 200 while the 3D image list 1320 is displayed, items in the 3D image list 1320 can be moved, The corresponding 3D image may be displayed.

Accordingly, the user can easily know the source of the 3D image, and can easily view the image.

Next, when there is a numeric key input in the remote control device 200 while the 3D image list 1320 is displayed, a channel list 1330 other than the 3D image list may be displayed as shown in FIG. 13 (b) . That is, the 3D channel list 1320 is released from the display state, and the broadcast channel list including the 2D video and the 3D video can be displayed. The broadcast channel list at this time may be a recently viewed channel list, a preferred channel list, or a list of channels that have been searched for 3D images as described above.

In the drawing, it is exemplified that whether the channel is a 2D image or a 3D image is displayed in the channel list. Accordingly, the user can easily grasp whether the broadcast is a 2D image or a 3D image.

13B shows that the channel list 1330 is displayed immediately without displaying the 3D image list 1320 of FIG. 13A when there is an input of a specific key in the remote control device 200 It is possible.

On the other hand, if the user selects one of the 3D image lists in step S640, the 3D image list is displayed as a 3D image.

That is, when an input signal, for example, a stream signal is input to the controller 170, the demultiplexer 210 demultiplexes the input signal. By demultiplexing, the input signal can be separated into a video signal, a voice signal, a data signal, and the like. The video decoder 225 in the video processing unit 220 decodes the demultiplexed video signal. The decoded video signal is mixed with the output of the OSD generating unit 240 in the mixer 250 and then input to the formatter 260. The formatter 260 detects a 3D video signal among the input signals and separates the 3D video signal into a plurality of viewpoint video signals in accordance with the 3D video signal. The plurality of viewpoint image signals may include, for example, a left eye image signal and a right eye image signal. The signal processed in the formatter 260 is displayed through the display 180.

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

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

Claims (18)

Detecting whether a 3D image signal is included in at least one of a received broadcast signal and an external input signal from an external device;
Generating a 3D image list based on the detected 3D image signal;
Displaying the 3D image list;
And displaying on the display an object indicating whether the external device is further detected after the detection and list generation step is performed based on the broadcast signal,
Wherein the detection and list generation step is further performed on the basis of an external input signal from the connected external device according to the additional detection input of the external device. The method according to claim 1,
Detecting whether a 2D video signal is included in at least one of a received broadcast signal and an external input signal from an external device; And
And generating a 2D image list based on the detected 2D image signal. The method according to claim 1,
Wherein the detecting step comprises:
The method comprising: receiving broadcast signals corresponding to pre-stored channels; detecting whether a 3D video signal is included in the broadcast signal based on a flag, header information, or metadata indicating 3D video included in the received broadcast signal;
A 3D image signal is included in the external input signal based on a flag, header information, or metadata indicating that the 3D image is included in the received external input signal, and receives an external input signal from an external device connected to the video display device And detecting whether or not the video signal is detected. The method according to claim 1,
The detecting and generating step comprises:
The 3D image search input or the automatic channel setting menu is executed. The method according to claim 1,
Wherein the detecting and generating the list comprises:
Wherein detection and list generation are performed based on an external input signal from the external device after detection and list generation are performed based on the broadcast signal. delete 3. The method of claim 2,
And displaying the 2D image list,
Wherein the 3D image list and the 2D image list are displayed in different areas on the display. 3. The method of claim 2,
In the 3D image list display step,
And displaying the combined image of the 3D image list and the 2D image list. The method according to claim 1,
In the 3D image list display step,
Wherein a 3D image list from the broadcast channel and a 3D image list from the external device are displayed together. The method according to claim 1,
The 3D display stage includes:
Wherein the operation is performed according to an input of a specific key. The method according to claim 1,
Wherein the detecting and generating the list comprises:
And the priority is added to the broadcast channel and the external device. The method according to claim 1,
And displaying a 3D image corresponding to the item by rolling an item in the 3D image list. The method according to claim 1,
Wherein the detecting step comprises:
Demultiplexing a broadcast signal or an external input signal; And
And extracting information representing a 3D image from the demultiplexed signal. A tuner for receiving a broadcast signal corresponding to a selected broadcast channel or a pre-stored broadcast channel;
An external device interface unit for receiving an external signal from an external device;
A controller for detecting whether a 3D image signal is contained in at least one of the broadcast signal and the external input signal and generating a 3D image list based on the detected 3D image signal; And
And a display for displaying the 3D image list,
Wherein,
A control unit configured to control the display unit to display an object indicating whether the external device is additionally detected on a display after the detection and list generation step is performed based on the broadcast signal, And the detection and list generation is further performed based on an external input signal from the image input device. 15. The method of claim 14,
Wherein,
A demultiplexer for demultiplexing at least one of the broadcast signal and the external input signal;
A 3D image detector for detecting whether a 3D image signal is included in the demultiplexed signal; And
And a list generator for generating a 3D image list based on the detected 3D image signal. 15. The method of claim 14,
Wherein,
And controls to display the 3D image list on the display according to an input of a specific key. 15. The method of claim 14,
Wherein,
Wherein the controller performs the detection of the 3D video signal and the generation of the 3D video list based on the detected 3D video signal according to the priority added to the broadcast channel and the external device. 16. The method of claim 15,
Wherein,
An image decoder for decoding the demultiplexed signal; And
Further comprising a formatter for extracting a 3D image signal from the decoded image signal and converting the 3D image signal into a plurality of view image signals.

Images