KR101638536B1 - Image Display Device and Controlling Method for the Same - Google Patents

Abstract

The present invention relates to an image display apparatus and a control method thereof. An image display apparatus according to an embodiment of the present invention displays 3D objects. A 3D object is an object to which a stereoscopic effect is applied so that a user who views the image display device can feel stereoscopic effect. The video display device can search content corresponding to the content related information input by the user from the handwriting input window 3D object among the contents stored in the connected external device, the network server, or the video display device. The video display device can display the search result. The user can manually input content related information that he / she wants to search using the handwriting input window 3D object displayed by the video display device.

Video display device, external device, network server, 3D object, content

Description

Technical Field [0001] The present invention relates to an image display device and a control method thereof,

The present invention relates to an image display apparatus and a control method thereof. More particularly, the present invention relates to an image display apparatus and a control method thereof that can display a screen to which a stereoscopic effect is applied so that a user can feel a stereoscopic effect.

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 noise and has low data loss, is advantageous for error correction, has 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 is becoming more common and practical in various other environments and technologies as well as computer graphics. Also, the stereoscopic image can be transmitted in the digital broadcasting described above, and a device for reproducing the stereoscopic image is also under development.

Accordingly, it is an object of the present invention to provide an image display apparatus and a control method thereof that can display an image to which a stereoscopic effect is applied so that a user can feel a stereoscopic effect. It is still another object of the present invention to provide a user interface that can be applied to an image display device for displaying a stereoscopic effect image so that a user can conveniently use the image display device for displaying the stereoscopic effect image.

According to another aspect of the present invention, there is provided a method of controlling an image display apparatus capable of searching for content in an external device or a network server, the method comprising: Displaying a handwriting input window 3D object; Determining a gesture of the user of the image display device; Displaying the text or image corresponding to the handwriting input gesture on the handwriting input window 3D object when the determined gesture is a handwriting input gesture; And displaying the content corresponding to the text or image displayed on the handwriting input window 3D object in the external device, the network server, or the image display device.

According to an aspect of the present invention, there is provided an image display apparatus capable of searching for content in an external device or a network server, the image display apparatus including: a handwriting input window 3D object capable of inputting content- A display unit for displaying the image; A gesture discrimination unit for discriminating a gesture of the user of the image display device; And controlling the display unit to display a text or image corresponding to the handwriting input gesture on the handwriting input window 3D object when the determined gesture is a handwriting input gesture, And a controller for searching the external device, the network server, or the video display device for the corresponding content and displaying the retrieved content on the display unit.

According to the present invention, an image display apparatus can display an image to which a stereoscopic effect is applied so that a user can feel a stereoscopic effect at the time of viewing. Also, the image display apparatus can display a handwriting input window 3D object through which a user can input a command to the image display apparatus through handwriting input. The image display device can identify the user gesture and display the text or image corresponding to the determined gesture on the handwriting input window 3D object. In addition, the video display device can search content from the external device, the network server, or the image display device corresponding to the text or image displayed on the handwriting input window 3D object.

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.

<Description of FIG. 1>

1 is a view illustrating a video display device system according to an embodiment of the present invention.

The image display apparatus 100 according to an embodiment of the present invention can communicate with the broadcasting station 210, the network server 220, or the external device 230.

The image display apparatus 100 may receive a broadcasting signal including a video signal transmitted from the broadcasting station 210. The image display apparatus 100 may process a video signal, a voice signal, or a data signal included in the broadcast signal so as to be suitable for output from the image display apparatus 100. [ The image display apparatus 100 can output an image or sound based on the processed image signal.

The image display apparatus 100 can communicate with the network server 220. The network server 220 is a device capable of transmitting and receiving signals to and from the video display device 100 through an arbitrary network. For example, the network server 220 may be a mobile phone terminal that can be connected to the image display apparatus 100 through a wired or wireless base station. In addition, the network server 220 may be a device capable of providing content to the video display device 100 through the Internet network. The content provider can provide the content to the video display device 100 using the network server.

The image display apparatus 100 can communicate with the external apparatus 230. [ The external device 230 is a device capable of transmitting / receiving signals directly to / from the image display device 100 by wire or wirelessly. For example, the external device 230 may be a media storage or playback device used by a user. That is, the external device 230 may be a camera, a DVD or Blu-ray player, a personal computer, or the like.

The broadcasting station 210, the network server 220, and the external device 230 may transmit a signal including a video signal to the video display device 100. The image display apparatus 100 can display an image based on a video signal included in an input signal. The video display apparatus 100 may transmit a signal transmitted from the broadcasting station 210 and the network server 220 to the video display apparatus 100 to the external apparatus 230. In addition, a signal transmitted from the external device 230 to the video display device 100 may be transmitted to the broadcasting station 210 or the network server 220. That is, the video display device 100 can transmit contents included in the signals transmitted from the broadcasting station 210, the network server 220, and the external device 230, in addition to directly reproducing the video content from the video display device 100.

<Description of FIG. 2>

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

2, an image display apparatus 100 according to an exemplary embodiment of the present invention includes a broadcast signal receiving unit 110, a network interface unit 120, an external device input / output unit 130, a gesture discrimination unit 140, A control unit 170, a display 180, and an audio output unit 185.

The broadcast signal receiving unit 110 may receive an RF broadcast signal corresponding to a channel selected by the user or all pre-stored channels among RF (Radio Frequency) broadcast signals received through the antenna. The broadcast signal receiving unit 110 converts the received RF broadcast signal into an intermediate frequency signal, a baseband image or a voice signal, and outputs the converted signal to the controller 170.

In addition, the broadcast signal receiver 110 may receive an RF broadcast signal of a single carrier according to an Advanced Television System Committee (ATSC) scheme or an RF broadcast signal of a plurality of carriers according to a DVB (Digital Video Broadcasting) scheme. The broadcast signal receiving unit 110 sequentially selects RF broadcast signals of all broadcast channels stored through the channel memory function among the received RF broadcast signals, and converts the RF broadcast signals into an intermediate frequency signal, a baseband image, or a voice signal. This is to show a thumbnail list including a plurality of thumbnail images corresponding to broadcast channels on the display unit 180. [ Therefore, the broadcast signal receiving unit 110 can receive the RF broadcast signals of the selected channel or all the stored channels sequentially / periodically.

The network interface unit 120 provides an interface for connecting the video display device 100 to a wired / wireless network including the Internet network.

The network interface unit 120 may include a wireless communication unit capable of wirelessly connecting the video display device 100 to the Internet. For wireless Internet access, WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access)

The network interface unit 120 may receive content or data provided by a content provider or a network operator through a network. That is, it is possible to receive contents such as broadcasts, games, VOD, broadcasting signals, and the related information 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.

In addition, the network interface unit 120 may be connected to a communication network capable of video or voice communication. The communication network may mean a broadcasting communication network, a public telephone network, a mobile communication network, etc. connected through a LAN.

The external device input / output unit 130 can connect the external device and the video display device 100. [ To this end, the external device input / output unit 130 may include an A / V input / output unit or a wireless communication unit.

The external device input / output unit 130 is 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 input / output unit 130 transmits external video, audio, or data signals to the controller 170 of the video display device 100 through a connected external device. Also, the control unit 170 can output the processed video, audio, or data signal to the connected external device.

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

Further, the wireless communication unit can perform wireless communication with another external device. The image display apparatus 100 is connected to an external device according to a communication standard such as Bluetooth, an RFID (Radio Frequency Identification), an IrDA (Infrared Data Association), an UWB (Ultra Wideband), a ZigBee, Can be connected.

Also, the external device input / output 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.

For example, when the set-top box is a set-top box for an IP (Internet Protocol) TV, the external device input / output unit 130 transmits video, audio, or data signals processed in the IP TV set- 170). In addition, the controller 170 can transmit the processed signals to the IP TV 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 gesture discrimination unit 140 can discriminate the gesture of the user of the image display apparatus 100. [ The user can input the video display device control command to the video display device 100 using the gesture. The gesture discrimination unit 140 may store information related to the video display device control command corresponding to the user gesture. The gesture judging unit 140 judges the user gesture and transmits information on the projection display control command corresponding to the determined gesture to the controller 170. [ The control unit 170 controls the image display apparatus 100 to correspond to the user gesture determined by the gesture discrimination unit 140. [

The gesture discrimination unit 140 may include at least one means for discriminating the gesture of the user. The gesture judging unit 140 of the image display apparatus 100 according to the present embodiment may include a user gesture identification means such as a camera and an infrared sensor. The present invention is not limited to the scope of the present invention.

For example, the gesture judging unit 140 including a camera may photograph a user gesture. The gesture discrimination unit 140 discriminates whether or not the captured gesture pattern is a gesture pattern corresponding to an image display device control command in which the captured user gesture pattern is stored. The gesture judging unit 140 may output to the control unit 170 information related to the video display device control command corresponding to the gesture pattern corresponding to the photographed user gesture. Accordingly, the control unit 170 can control the image display apparatus 100 according to the information output from the gesture judging unit 140. [

A user may use a remote control device or other kind of control command input means capable of transmitting a signal including a control command to the video display device 100. [ In this case, the gesture judging unit 140 can discriminate the user gesture by discriminating the movement of the remote control device used by the user of the video display device 100 or other kinds of control command input means.

The gesture discrimination unit 140 can photograph the movement of a remote control device used by a user of the video display device 100 or other kinds of control command input means through a camera. Also, the movement of the remote control device or other kinds of control command input means can be tracked using an infrared sensor. The gesture discrimination unit 140 can discriminate the user gesture through the movement of a remote control device photographed or tracked or other type of control means input means.

As another example, the remote control device or other type of control command input means can transmit and receive signals to and from the video display device 100. In this case, the signal transmitted from the remote control device or other type of control command input means to the image display device 100 includes information on the motion of the remote control device or other kinds of control command input means. Therefore, the gesture judging unit 140 can discriminate the gesture of the user using the image display device from the signals transmitted from the remote control device or other kinds of control command input means. The remote control device or other type of control command input means may include a gyro sensor, an acceleration sensor, or the like so as to calculate motion information and transmit the motion information to the image display device 100.

In this embodiment, the other type of control command input means may be a pointing device of a type that can be attached to a part of the user's body or a pointing device of a type that the user can move by hand.

The controller 170 controls the overall operation of the image display apparatus 100. The control unit 170 may receive a signal transmitted from a remote control device or another kind of control command input means. In addition, a command can be input through the local key provided in the image display apparatus 100. The controller 170 determines a command included in the received signal or a command corresponding to a local key operation and controls the image display apparatus 100 to correspond to the command.

For example, when the user inputs a predetermined channel selection command, the control unit 170 controls the broadcast signal receiving unit 110 to receive the broadcast signal provided through the selected channel through the broadcast signal receiving unit 110. Also, the video and audio signals of the selected channel can be processed and output to the display unit 180 or the sound output unit 185. In addition, channel information selected by the user can be output through the display unit 180 or the sound output unit 185 together with the video signal and the audio signal.

The control unit 170 may process the video signal or the audio signal based on the information included in the data signal received together with the video signal or the audio signal. That is, the controller 170 may determine the format of the video signal from the data signal related to the video signal input to the video display device 100, and process the video signal input to the video display device 100 according to the format of the video signal .

The controller 170 may generate an OSD signal that can display an OSD related to an image generated based on the video signal from a data signal associated with the video signal. In addition, the user can confirm relevant information in the image display apparatus 100 or generate a graphic user interface so that the image display apparatus 100 can input the image display apparatus control command.

The user can input another kind of video or audio output command through a remote control device or another type of control command input means. For example, the user may wish to view a camera or camcorder image signal input through the external device input / output unit 130 instead of the broadcast signal. In this case, the control unit 170 controls the image display apparatus 100 so that the video signal or the audio signal input through the USB input unit of the external device input / output unit 130 is outputted through the display unit 180 or the audio output unit 185, The video signal or the audio signal can be processed.

The control unit 170 of the present embodiment can process a video signal so that a 2D or 3D video signal input from the outside can be displayed on the display unit 180. [ In addition, the controller 170 may process the image signal so that the generated graphic user interface is three-dimensionally displayed on the display unit 180. A detailed description of the control unit 170 will be described later with reference to FIG.

The display unit 180 converts the video signal, the data signal, the OSD signal processed by the control unit 170 or the video signal and the data signal received through the external device input / output unit 130 into R, G, and B signals, respectively Thereby generating a driving signal. The display unit 180 may display a screen according to the generated driving signal. The display unit 180 may be a PDP, an LCD, an OLED, or a flexible display. In this embodiment, the display unit 180 preferably has a 3D display.

The three-dimensional display can be divided into an additional display method and a single display method according to a method of recognizing a three-dimensional image by a user.

In the single display method, a 3D image can be implemented independently on a display without a separate auxiliary device. A user who views a display using a single display method can view a three-dimensional image even without the additional apparatus (ex) flat glasses). The single display method may be a lenticular method, a parallax barrier, or the like.

The additional display method is a method of implementing a 3D image using an auxiliary device. Additional display methods include a head-mounted display (HMD) system, a glasses system, and the like. Further, polarized glasses, shutter glasses, spectral filters, and the like can be applied to the glasses used in the glasses system.

Meanwhile, the display unit 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 video / audio processing 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 sound output unit 185 may be implemented by various types of speakers.

<Description of Figs. 3 and 4>

3 is an internal block diagram of the controller 170 of the image display apparatus according to an embodiment of the present invention.

The controller 170 may include a demodulator 171, a demultiplexer 172, a decoder 173, an OSD generator 174, and a formatter 175.

The demodulator 171 may demodulate the broadcast signal received by the broadcast signal receiver 110. For example, the demodulator 171 may receive the digital IF signal DIF converted by the broadcast signal receiver 110 and perform a demodulation operation. The demodulator 171 may perform channel decoding. For this, the demodulator 171 may include convolution decoders, deinterleavers, and reed-solomon decoders to perform convolutional decoding, deinterleaving, and reed solomon decoding.

The demodulator 171 can demodulate and decode the channel and output the stream signal TS. 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.

The demodulator 171 may be separately provided according to the ATSC scheme and the DVB scheme. The stream signal output from the demodulator 171 may be input to the demultiplexer 172.

The demultiplexer 172 demultiplexes the received stream signal, for example, the MPEG-2 TS into a video signal, a voice signal, and a data signal. The stream signal input to the demultiplexer 172 may be a stream signal output from the demodulator 171, the network interface unit 120, and the external device input / output unit 130.

The demultiplexed data signal may be an encoded data signal. The encoded data signal may include 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 decoder unit 173 can decode the demultiplexed signal. The decoder unit 173 of the present embodiment may include a video decoder for decoding the demultiplexed video signal and a scaler for adjusting the resolution of the decoded video signal to be output from the video display device 100.

The formatter 175 can determine the format of the inputted video signal by referring to the data signal related to the video signal. In addition, the formatter 175 may convert the input video signal into a format suitable for the display unit 180, and output the converted video signal to the display unit 180.

The video display device 100 of this embodiment can display a 3D image on the display unit 180. [ The formatter 175 may generate a 3D image signal according to a predetermined format by separating the input image signal into a plurality of view image. The formatter 175 outputs the generated 3D video signal to the display unit 180. The display unit 180 displays a 3D image based on the generated 3D image signal.

The 3D image is composed of a plurality of viewpoint images. The user can view the multiple view image through the left eye and the right eye. The user can feel the stereoscopic effect of the 3D image through the difference of the image viewed through the left eye and the right eye. A multi-view image for realizing a 3D image is generally composed of a left eye image that the user can recognize through the left eye and a right eye image that can be recognized through the right eye.

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

As shown in FIG. 4A, a method of arranging the left eye image and the right eye image to left and right is referred to as a side by side format. As shown in FIG. 4B, a method of arranging the left eye image and the right eye image up and down is called a top / down format. As shown in FIG. 4C, the method of arranging the left eye image and the right eye image by time division is called a frame sequential format. As shown in FIG. 4D, a method of mixing the left eye image and the right eye image line by line is referred to as an interlaced format. As shown in FIG. 4E, a method of mixing the left eye image and the right eye image box by box is called a Checker Box format.

A video signal included in a signal input from the outside to the image display apparatus 100 may be a 3D image signal capable of implementing a 3D image. In addition, the graphic user interface video signal generated to display information related to the video display device 100 or to input a command related to the video display device 100 may be a 3D video signal. The formatter 175 may mix the 3D video signal included in the signal inputted from the outside to the video display device 100 and the graphic user interface 3D video signal and output the mixed signal to the display unit 180.

The formatter 175 can determine the format of the mixed 3D video signal by referring to the related data signal. The formatter 175 may process the 3D video signal to fit the determined format and output the processed 3D video signal to the display unit 180. When the 3D image signal format that can be output from the display unit 180 is limited, the formatter 175 converts the received 3D image signal into a 3D image signal format that can be output from the display unit 180 And output it to the display unit 180.

The OSD generation unit 174 may generate an OSD (On Screen Display) signal. Specifically, the OSD generation unit 174 generates various kinds of information (e.g., a variety of information) on the screen of the display unit 180 based on at least one of a video signal and a data signal, or a user input signal input through a remote control device or another kind of control command input means May be generated as a graphic or text signal. The OSD generating unit 174 may generate a signal for displaying a graphic or text capable of inputting a control command to the image display apparatus 100. [ The generated OSD signal may be output to the display unit 180 together with the processed image signal and the processed data signal.

The OSD signal may include information on a user interface screen, various menu screens, widgets, icons, and the like that the display unit 180 can display as a signal generated for graphic or text display. The OSD generation unit 174 may generate the OSD signal as a 2D video signal or a 3D video signal. The OSD signal generated by the OSD generating unit 174 may include a graphical user interface 3D video signal mixed with another video signal in the formatter 175. [

The display unit 180 may display the object according to the OSD signal generated by the OSD generating unit 174. [ The object of this embodiment may be one of a volume control button, a channel control button, an image display device control menu, an icon, a navigation tab, a scroll bar, a progressive bar, a text box, and a window.

The user can recognize information on the image display apparatus 100 or information on the image displayed on the image display apparatus 100 through the object displayed on the display unit 180. [ In addition, a command can be input to the image display apparatus 100 through the object displayed on the image display apparatus 100. [ On the other hand, the 3D object in the present specification is an object to which a stereoscopic effect is applied so as to have a stereoscopic effect. The 3D object may be a PIP image, an EPG indicating broadcast program information, various menus of a video display device, a widget, an icon, and the like.

5,

5 is a flowchart illustrating a method of controlling an image display apparatus according to an exemplary embodiment of the present invention.

The video display device 100 of this embodiment can display the handwriting input window 3D object (S110). A handwriting input window 3D object is an object that three-dimensionally displays a window that a user can write using a hand or a remote control device. In this embodiment, the user can write on the handwriting input window 3D object using his or her hand. In another embodiment, the user can write on the handwriting input window 3D object using the handwriting input means, which is one of the control command input means for inputting the control command to the image display apparatus 100. [ The handwriting input means can shape the pen.

The image display apparatus 100 can display a handwriting input window 3D object when a handwriting input window creation command is input to the image display apparatus 110. [ The image display apparatus 100 can recognize that the handwriting input window creation command is input to the image display apparatus 100 when the first step of the content search process is executed. Also, the user may touch the display unit 180 of the touch screen or input the handwriting input window creation command to the image display apparatus 100 by operating the local key provided in the image display apparatus 100.

The OSD generating unit 174 may generate an OSD signal capable of displaying a handwriting input window 3D object to which a handwriting input window creation command is input and output the generated OSD signal to the formatter 175. [ The formatter 175 may output the 3D video signal according to the OSD signal to the display unit 180. [ The display unit 180 may display a 3D image based on the input 3D image signal. In this embodiment, the 3D image displayed on the display unit 180 is a handwriting input window 3D object.

When the image display apparatus 100 displays the handwriting input window 3D object, the gesture discrimination unit 140 discriminates the gesture of the user of the image display apparatus 100 (S120). In this embodiment, the gesture judging unit 140 photographs the user's hand using a camera and discriminates whether or not the movement pattern of the photographed hand corresponds to the handwriting input gesture pattern (S130).

In the case of the video display device 100 having the handwriting input means such as a separate remote display device, the gesture discrimination unit 140 can discriminate whether the handwriting input means corresponds to the handwriting input gesture. The gesture discrimination unit 140 may store handwriting input gesture information to be referred to in order to determine whether the user gesture corresponds to the handwriting input gesture. The handwriting input gesture information that can be referred to by the gesture recognizing unit 140 may include information on a movement pattern or the like in handwriting input. The gesture discrimination unit 140 may determine whether the gesture of the user of the image display apparatus 100 corresponds to the handwriting input gesture by referring to the stored handwriting input gesture information.

If the gesture judging unit 140 judges that the user gesture corresponds to the handwriting input gesture, the gesture judging unit 140 may output information on the handwriting input gesture corresponding to the user gesture to the control unit 170. [ The control unit 170 may control the display unit 180 to display the text or image corresponding to the handwriting input gesture on the handwriting input window 3D object according to the information output from the gesture determination unit 140 in operation S140. The user can check whether or not the handwriting of the user is recognized by the user through the text or image displayed on the handwriting input window 3D object.

The image display apparatus 100 can search contents corresponding to the text or image displayed on the handwriting input window 3D object (S150). For example, the user may input a predetermined word into the handwriting input window 3D object in order to retrieve contents related to a predetermined word, such as a file name or a predetermined word. The control unit 170 may input text or an image displayed in the handwriting input window 3D object as a search word and search for a content corresponding to the search word.

The control unit 170 can search content corresponding to the search term in an external device or a network server connected to the video display device 100. [ Also, the controller 170 can search whether or not there is content corresponding to the search query among the contents stored in the video display device 100. The control unit 170 may control the display unit 180 to display the content corresponding to the search result or the search result on the display unit 180. [

If the gesture judging unit 140 judges that the user gesture of the image display apparatus 100 does not correspond to the handwriting input gesture, the gesture judging unit 140 judges that the user gesture is a gesture corresponding to another image display device control command, (S160). If there is another video display device control command corresponding to the user gesture, the gesture determination unit 140 may transmit information on another video display device control command to the controller 170. [ The control unit 170 may control the image display apparatus 100 to operate the image display apparatus 100 according to a command included in the information transmitted from the gesture determination unit 140 in operation S170.

6,

FIG. 6 is a flowchart illustrating a method of controlling an image display apparatus according to an exemplary embodiment of the present invention. Referring to FIG. In the present embodiment, when the gesture judging unit 140 judges that the user gesture is a handwriting input gesture, the image display apparatus 100 displays a search setting window for setting a content searching environment as a 3D object, You can search for content in the search environment.

That is, if the gesture discrimination unit 140 determines that the user gesture is a handwriting input gesture (S210), the control unit 170 controls the display unit 180 to display a window for setting the search environment (S220). In the present embodiment, a window for setting a search environment is a 3D object to which a stereoscopic effect is applied. The search environment setting window 3D object may be displayed as if it is projected toward the user of the image display apparatus 100 as a handwriting input window 3D object.

Search setting window The 3D object may include a menu for setting a search environment. The user can select the search environment of the content to be searched using the menu included in the search environment setting window. For example, the user can specify a place to search for the content. That is, the user can select whether to search content from an external device, from a network server, or from within the video display device 100. In addition, the user can select a content provider to search for content using the video display device 100 among the content providers providing content through the network server.

The OSD generating unit 174 may generate an OSD signal constituting a 3D object of the search setting window and output the generated OSD signal to the formatter 175. [ The formatter 175 may generate a 3D video signal based on the OSD signal output from the OSD generating unit 174 and output the generated 3D video signal to the display unit 180. The display unit 180 may display a 3D configuration of the search environment setting window when the 3D image signal constituting the search environment setting window 3D object is input through the formatter 175. [

If a user selects a predetermined external device or a network server using the 3D configuration window (S230), the video display device 100 can search contents corresponding to the handwriting input gesture on the external device or the network server (S240). The content corresponding to the handwriting input gesture may be the content corresponding to the text or the image displayed on the handwriting input window 3D object corresponding to the handwriting input gesture.

On the other hand, if the user does not select a predetermined external device or a network server, the video display device 100 can search content in a default environment (S250). For example, the image display apparatus 100 may include an external device that is currently connected to the image display apparatus 100 through a wired or wireless connection, a network server connected to the image display apparatus 100 through a current network, The content corresponding to the handwriting input gesture can be searched. As another example, the video display apparatus 100 can search contents on a predetermined external device or a network server that is basically set to search for contents.

7,

7 is a flowchart illustrating a method of controlling a video display device according to an embodiment of the present invention. In the present embodiment, when the gesture judging unit 140 judges that the user gesture is a handwriting input gesture in the present embodiment, the video display apparatus 100 displays a query word list window for selecting a search word corresponding to the handwriting input gesture as a 3D object, The content corresponding to the search word selected by the user can be retrieved.

If the gesture judging unit 140 judges that the user gesture is a handwriting input gesture (S310), the control unit 170 controls the display unit 180 to display a search word list window made up of a search word corresponding to the handwriting input control. In the present embodiment, the query word list window is a 3D object to which a stereoscopic effect is applied. The OSD generating unit 174 generates a search word list window 3D object image signal including a search word corresponding to text or an image input to the image display apparatus 100 through the handwriting input gesture and outputs the generated image to a formatter 175 . The formatter 175 may process the OSD signal output from the OSD generating unit 174 into a 3D video signal and output the OSD signal to the display unit 180. [ The display unit 180 may display a 3D image based on the 3D image signal output from the formatter 175. [ In this embodiment, the 3D image displayed by the display unit 180 is a query word list window 3D object.

The control unit 170 determines whether the search word selection command is input to the image display apparatus 100 (S330). The user can select a search word included in the search word list window 3D object through a remote control device or another kind of control command input means. As another example, the user may take a query selection gesture corresponding to a query selection command contained in the query term list window 3D object. The gesture discrimination unit 140 can compare the user gesture photographed through the camera with a gesture corresponding to the search word selection command. If the gesture determination unit 140 determines that the user gesture is a gesture corresponding to the search word selection command, the control unit 170 displays a selection instruction of a search word corresponding to the user gesture among the search words included in the search word list window 3D object, It can be determined that it is input to the apparatus 100.

If the control unit 170 determines that the search word selection command is input to the video display device 100, the control unit 170 may control the display unit 180 to display the selected search word on the handwriting input window 3D object according to the selection command (S340). The search word included in the search word list window 3D object is a search word that at least partially matches the text or image corresponding to the handwriting input gesture determined in step S310. The control unit 170 may control the display unit 180 to display the search word selected by the user among the search words at least partially matched with the text or image corresponding to the handwriting input gesture on the handwriting input window 3D object.

In addition, the control unit 170 may search the content corresponding to the selected search word and display the search result or the retrieved content on the display unit 180 (S350). For example, the control unit 170 may display a list of contents matched with a search word selected by the user on the display unit 180. In addition, the controller 170 may display on the display unit 180 a content that has the highest degree of matching with the search word selected by the user. The image display apparatus 100 may display a content list or contents as a 3D image.

On the other hand, if the user does not select a search word in the search word list window 3D object, the controller 170 displays the text or image corresponding to the handwriting input gesture determined in step S310 on the handwriting input window 3D object, The content corresponding to the image can be retrieved (S360). The control unit 170 may display the searched content list or the content having the highest matching degree among the searched contents on the display unit 180. [

&Lt; Description of Figures 8 to 12 &

8 to 12 are diagrams referred to in explanation of a method of controlling a video display device according to the present invention.

As shown in FIG. 8, the image display apparatus 100 may display a handwriting input window 3D object 302. The handwriting input window 3D object 302 is a 3D image applied with a stereoscopic effect so as to appear to protrude toward the user 301. The handwriting input window 3D object 302 is protruded toward the user 301 from the plane D1 of the display unit 180 in which at least two images constituting the handwriting input window 3D object 302 are displayed As shown in FIG. At least two images constituting the handwriting input window 3D object 302 may be left-eye and right-eye images with parallax. When at least two images constituting the 3D object 302 are displayed on the plane D2 of the display unit 180, the user can view the 3D object 302 appearing to be protruding toward the user.

In the present embodiment, the image display apparatus 100 can identify the position of the user 301 and display the handwriting input window 3D object 302 so as to correspond to the position of the user 301 that has discriminated. The control unit 170 of the image display apparatus 100 can adjust the interval, shape, and display position of at least two images constituting the handwriting input window 3D object 302. [ The control unit 170 can determine the position of the user 301 and change the display state of the handwriting input window 3D object 302 so that it appears to be positioned in front of the user 301 that has determined it.

As another example, the image display apparatus 100 may determine the position of an arbitrary reference point and display the handwriting input window 3D object 302 corresponding to the position. The reference point may be a position where the user stands, a height of the user's eyes, a position of the user's hand, or a handwriting input means that the user can use. When the reference point is set, the image display apparatus 100 can determine the position of the reference point by using a camera or an infrared sensor, process the 3D image signal so that the handwriting input window 3D object can be displayed at the corresponding position have.

9A shows an example in which the handwriting input window 3D object 307 is displayed so as to correspond to the position of the handwriting input means 306 used by the user. As shown in the figure, the image display apparatus 100 can determine the position of the handwriting input means 306. The control unit 170 of the video display device 100 processes the video signal constituting the handwriting input window 3D object 307 so that the handwriting input window 3D object 307 is displayed corresponding to the position in the handwriting input means 306 .

The control unit 170 controls the display unit 180 so that the lower end of the handwriting input window 3D object 307 appears to protrude from the plane D2 of the display unit 180 toward the user, The signal can be processed. The video display device 100 of the present embodiment can be configured so that the user can easily write on the handwriting input window 3D object 307 by using the handwriting input means 306 by tilting the handwriting input window 3D object 307 do.

9B, the image display apparatus 100 may be configured such that the left end of the handwriting input window 3D object 308 appears to protrude from the plane D2 of the display unit 180 toward the user, . That is, the control unit 180 can adjust the display shape and the display interval of the image constituting the handwriting input window 3D object 308 so that the user can view the tilted handwriting input window 3D object 308.

The user can write on the handwriting input window 3D objects 307 and 308 appearing to be tilted using a finger or a separate handwriting input means.

10 is a diagram for explaining an example in which the depth of the handwriting input window 3D object 312 is changed corresponding to the gesture of the user 311 of the image display apparatus 100. [ The gesture judging unit 140 of the video display device 100 compares the user gesture with the gesture corresponding to the control command of the other video display device 100 when the gesture of the user 311 is not a handwriting input gesture . The gesture discrimination unit 140 can discriminate the control command of the image display apparatus 100 corresponding to the user gesture by referring to a database or the like in which information on the gesture per control command is stored.

In this embodiment, the user gesture is a user gesture corresponding to the 3D object depth adjustment command. Accordingly, the controller 170 can change the depth of the 3D object displayed on the image display device 100 according to the 3D object depth adjustment command. The control unit 170 may change the depth of the 3D object by adjusting the interval of the images constituting the 3D object.

10A, the image display apparatus 100 displays the handwriting input window 3D object 312 so as to appear as being projected toward the user 311 by a in the plane D3 of the display unit 180 do. The control unit 170 adjusts the intervals of images constituting the handwriting input window 3D object 312 according to a command corresponding to the gesture of the user 311 determined by the gesture discrimination unit 140. [

FIG. 10B is a diagram for explaining a case where the control unit 170 adjusts the interval of images constituting the handwriting input window 3D object 312. FIG. As shown, the handwriting input 3D object 312 appears to be positioned protruding towards the user 311 by a length b longer than a. According to the present embodiment, the user 311 can change the depth of any 3D object including the handwriting input window 3D object using a gesture.

In another embodiment, the image display device 100 may be configured to cause the handwriting input window 3D object to appear to be extruded towards the user most when the handwriting input window 3D object is displayed with at least one other 3D object have. That is, the control unit 170 can change the interval of the images constituting the 3D object to correspond to the depth of the corresponding 3D object. The control unit 170 may process the image signal so that the intervals of the images constituting the handwriting input window 3D object are larger than the intervals of the images constituting the 3D objects having different handwriting input window 3D objects. In this case, the handwriting input 3D object appears to be located more extruded toward the user than other 3D objects.

11 is a diagram for explaining an example of displaying a search environment setting window 3D object 323 together with a handwriting input window 3D object 322 in an image display apparatus 100 according to an embodiment of the present invention. The control unit 170 displays the handwriting input window 3D object 322 so that the handwriting input window 3D object 322 appears to protrude from the plane D4 of the display unit 180 toward the user's hand 321 as the reference point And processes the constituent video signals.

The control unit 170 outputs the 3D image signal constituting the search environment setting window 3D object 323 to the display unit 180 so that the search environment setting window 3D object 323 can be displayed on the display unit 180. [ The user can select a place where he / she desires to search for the content by using the search setting window.

FIG. 12 is a diagram for explaining an example of displaying a query word list window 3D object 333 together with a handwriting input window 3D object 332 in an image display apparatus 100 according to an embodiment of the present invention. The control unit 170 displays the handwriting input window 3D object 332 so that the handwriting input window 3D object 332 appears to protrude from the plane D5 of the display unit 180 toward the user's hand 331 as the reference point And processes the constituent video signals.

The control unit 170 outputs the 3D image signal constituting the query word list window 3D object 333 to the display unit 180 so that the query word list window 3D object 333 can be displayed on the display unit 180. [ The user can select a search word to search using the search word list window.

In addition, the image display apparatus and its operation or control method according to the present invention are not limited to the configuration and method of the embodiments described above, but the embodiments may be modified in various ways, All or a part of the above-described elements may be selectively combined.

Meanwhile, the present invention can be embodied as a code readable by a processor in a processor-readable recording medium provided in an 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 readable 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 also a carrier wave such as transmission over the Internet. In addition, the processor readable recording medium may be distributed over networked computer systems so that code readable by the processor in a distributed manner 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.

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

2 is an internal block diagram of a video display device according to an embodiment of the present invention.

3 is an internal block diagram of a control unit of the image display apparatus according to an embodiment of the present invention,

4 is a diagram illustrating a 3D image signal format that can be processed in an image display apparatus according to an exemplary embodiment of the present invention.

5 to 7 are flowcharts showing a flow of a method of controlling a video display device according to an embodiment of the present invention.

FIG. 8 to FIG. 12 are diagrams referred to in explanation of a method of controlling an image display apparatus according to an embodiment of the present invention.

Description of the Related Art [0002]

100: video display device 110: broadcast signal receiver

120: network interface unit 130: external device input / output unit

140: Gesture discrimination unit 170:

180: display 185: sound output section

Claims (18)

1. A control method for a video display device capable of searching contents from an external device or a network server, Displaying a handwriting input window 3D object capable of inputting content related information; A gesture discrimination unit including a camera or an infrared sensor discriminates a gesture of the user of the image display apparatus; Determining a position of the reference point; Displaying the text or image corresponding to the handwriting input gesture on the handwriting input window 3D object when the determined gesture is a handwriting input gesture; And Searching the external device, the network server, or the video display device for content corresponding to the text or image displayed on the handwriting input window 3D object, The display position of the image constituting the handwriting input window 3D object corresponds to the position of the discriminated reference point, Wherein the reference point is a handwriting input means used by the user's hand or the user. delete delete The method according to claim 1, The handwriting input window 3D object display step displays the handwriting input window 3D object such that at least one of the lower end, upper end, left end, and right end of the handwriting input window appears to protrude from the other end toward the user A method of controlling a video display device. The method according to claim 1, Displaying at least one 3D object in addition to the handwriting input window 3D object, Wherein the handwriting input window 3D object display step displays the handwriting input window 3D object so that the handwriting input window 3D object appears to be more projected toward the user than other 3D objects. The method according to claim 1, Further comprising changing a depth of the 3D object when the determined gesture is a depth control gesture of the handwriting input window 3D object. The method according to claim 1, Further comprising the step of displaying a search setting window 3D object capable of setting a search environment of the text or image displayed on the handwriting input window 3D object. 8. The method of claim 7, Wherein the search configuration window 3D object includes a menu for selecting an external device or a network server that can search text or images displayed on the handwriting input window 3D object. 9. The method of claim 8, Further comprising the step of determining whether an external device or a network server selection command included in the search configuration window 3D object is input, Wherein the searched content display step searches for content corresponding to a text or an image displayed on the handwriting input window 3D object at an external device or a network server corresponding to the input selection command. Control method. The method according to claim 1, Further comprising the step of displaying a search word list window 3D object including at least one search word at least partially matched with the text or image displayed on the handwriting input window 3D object. 11. The method of claim 10, Further comprising: determining whether a search word selection command included in the search word list window 3D object is input; Wherein the step of displaying the text or the image on the handwriting input window 3D object displays a search word corresponding to the input selection command on the handwriting input window 3D object. 1. A video display device capable of searching contents from an external device or a network server, A display unit for displaying a handwriting input window 3D object for inputting content related information; A gesture discrimination unit that includes a camera or an infrared sensor and discriminates a gesture of the user of the image display device; And When the determined gesture is a handwriting input gesture, controls the display unit to display a text or image corresponding to the handwriting input gesture on the handwriting input window 3D object, and corresponds to the text or image displayed on the handwriting input window 3D object The network server or the video display device and displaying the content on the display unit, The gesture determining unit may determine the position of the reference point, Wherein the control unit controls the display position of the image constituting the handwriting input window 3D object to correspond to the calculated position of the reference point, Wherein the reference point is a handwriting input means used by the user's hand or the user. 13. The method of claim 12, Wherein the display unit displays the handwriting input window 3D object such that at least one of the lower end, the upper end, the left end, and the right end of the handwriting input window 3D object appears to protrude from the other end toward the user. Device. 13. The method of claim 12, Wherein the display unit displays the handwriting input window 3D object such that the handwriting input window 3D object appears to be projected toward the user from other 3D objects. 13. The method of claim 12, Wherein the display unit displays a search setting window 3D object capable of setting a search environment of text or images displayed on the handwriting input window 3D object. 16. The method of claim 15, Wherein the control unit searches for content corresponding to a text or an image displayed on the handwriting input window 3D object at an external device or a network server selected from the 3D configuration object of the search configuration window. 13. The method of claim 12, Wherein the display unit displays a search word list window 3D object including at least one search word at least partially matched with a text or image displayed on the handwriting input window 3D object. 18. The method of claim 17, Wherein the control unit controls the display unit so that a search word selected from the search word list window 3D object is displayed on the handwriting input window 3D object.

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