KR101702968B1 - Operating an Image Display Device - Google Patents

Abstract

The present invention relates to an image display apparatus and a control method thereof. According to an embodiment of the present invention, the video display device displays a subtitle corresponding to an image being reproduced. When a pointer corresponding to a signal transmitted from the remote control apparatus selects a predetermined caption, the video display apparatus can reproduce the video from the time point corresponding to the selected caption. The user can adjust the playback time of the video using the caption.

Description

Technical Field [0001] The present invention relates to an image display device,

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 capable of displaying a subtitle corresponding to an image being reproduced, and reproducing an image from a corresponding selected time point by selecting a predetermined subtitle from subtitles and a control method thereof.

 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.

Along with the trend that analog broadcasting is converted into digital broadcasting, there is an increasing tendency to broadcast in response to various demands of users. As the number of channels increases, the time required until the user selects a desired channel from among various channels may increase. Also, it may take a lot of time to switch the channel to display the image of the selected channel.

In addition, the number and type of image signals that can be displayed through the image display device increases, and the number of buttons of the remote control device capable of operating the image display device as the kinds of services that can be provided through the image display device are varied Is increasing. Users often feel the need to use complicated remote control devices. Accordingly, various schemes such as a user interface development that can efficiently control a video display device and enhance user's convenience have been researched.

Accordingly, it is an object of the present invention to provide an image display apparatus and an operation method thereof capable of displaying subtitles of an image being reproduced. It is still another object of the present invention to provide an image display apparatus and a method of operating the image display apparatus to which a user interface capable of displaying a pointer corresponding to the operation of the remote control apparatus and controlling the image display apparatus conveniently using a pointer is applied.

According to an aspect of the present invention, there is provided a method of controlling an image display apparatus including: reproducing an image based on a video signal; Displaying a caption corresponding to the image generated by the caption generation unit on a display unit; Determining whether a video reproduction command corresponding to a predetermined caption among the captions displayed on the display unit is input; And reproducing the video corresponding to the predetermined subtitle if the video reproducing command corresponding to the predetermined subtitle has been input.

According to another aspect of the present invention, there is provided an image display apparatus including: a display unit displaying an image and a subtitle being reproduced; An interface unit receiving a signal transmitted from the remote control device; And a controller that determines whether or not the remote control device transmission signal received through the interface unit includes an image reproduction command corresponding to a predetermined caption, and when the predetermined caption corresponding video reproduction command is included in the remote control device transmission signal And a control unit for processing the video signal output to the display unit so that the predetermined caption corresponding video is reproduced on the display unit.

According to the present invention, a subtitle of an image being reproduced in the image display apparatus can be displayed. In addition, a pointer corresponding to a signal transmitted from the remote control device may be displayed on the video display device, a caption at a predetermined time point may be selected using a pointer, and an image corresponding to the selected caption may be displayed on the video display device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an image display apparatus according to an embodiment of the present invention;
2 and 3 are block diagrams of an image display apparatus according to an embodiment of the present invention,
4A and 4B are front perspective views of a video display device and a spatial remote controller according to an embodiment of the present invention,
FIG. 5 is a flowchart illustrating a method of operating an image display apparatus according to an exemplary embodiment of the present invention.
6 to 10 are views referred to the description of an operation method of an image display apparatus according to an embodiment of the present invention.

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 according to an embodiment of the present invention.

As shown in the figure, the image display apparatus 100 according to an embodiment of the present invention can reproduce an image. The video display apparatus 100 can display the video screen 301 being reproduced and the caption screen 302 corresponding to the video being reproduced. The user can read the caption of the corresponding image through the caption screen 302 while watching the video being reproduced through the video screen 301. [

The image display apparatus 100 may display a pointer 304 corresponding to a signal transmitted from the remote control apparatus of the image display apparatus. The display position of the pointer 304 can be changed so as to correspond to the signal transmitted from the remote control device. For example, the remote control device may be a space remote control capable of sensing a movement of a user. In this case, the remote control device can transmit a signal including information on the motion of the sensed user to the image display device 100. [ The image display apparatus 100 can display the pointer 304 based on the information included in the signal transmitted by the remote control apparatus. Therefore, the display position of the pointer 304 is changed so as to correspond to the movement of the user.

The user can operate the remote control device so that the pointer 304 is positioned on the predetermined caption 303 of the caption screen 302. [ The user can operate an OK button provided on the remote control device in a state where the pointer 304 is positioned on the predetermined caption 303. [ In this case, the remote control apparatus transmits a signal including information on the command corresponding to the OK button to the image display apparatus 100. [

When the remote control device transmits a signal including information on the command corresponding to the OK button in a state where the pointer 304 is positioned on the predetermined caption 303, It is possible to reproduce an image at a time point. That is, the video display device 100 can display the video at the time point corresponding to the predetermined caption 303 selected by the pointer 304. [

Generally, the image display apparatus 100 outputs sound synchronized with an image to be reproduced on the image screen 301. The subtitles displayed on the subtitles screen 302 may be texts representing sounds among sounds synchronized with the video reproduced on the video screen 301. [ Thus, the subtitles may have time information associated with the corresponding video.

The video display device 100 of the present embodiment allows the user to select a subtitle to be displayed on the subtitle screen 302. [ The subtitles displayed on the subtitle screen 302 by the video display device 100 are linked with time information related to the corresponding video. The video display apparatus 100 can refer to the time information of the video corresponding to the caption selected by the user. The image display apparatus 100 can reproduce the image from the time point corresponding to the referenced time information. The image display apparatus 100 can display the image at the time point corresponding to the referenced time information on the image screen 301. [ It can also be displayed in a separate popup window.

<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 remote control device interface 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 remote control device interface unit 140 can transmit and receive signals to and from the remote control device 200 of the video display device 100. For example, the remote control device interface unit 140 can transmit and receive wireless signals according to the IR communication standard with the remote control device 200. [ Also, the remote control device interface unit 140 can transmit and receive wireless signals according to the RF communication standard with the remote control device 200. [

The remote control device interface unit 140 may output the signal transmitted from the remote control device 200 to the control unit 170. [ The control unit 170 receives the signal output from the remote control unit interface unit 140 and controls the image display device 100 to correspond to the video display device control command included in the signal output from the remote control device interface unit 140 Can be controlled. For example, the control unit 170 controls the volume level to change or output a channel of an image to be reproduced in the image display apparatus 100 so as to correspond to a channel change command or a volume up / down command transmitted through the remote controller 200 Can be changed.

The remote control device interface unit 140 may transmit a wireless signal including information on the control state of the video display device 100 output by the control unit 170 to the remote control device 200. [ The remote control apparatus 200 can output information on the control state of the image display apparatus 100 included in the wireless signal transmitted by the remote control apparatus interface unit 140. [ For example, in the case of a remote control device 200 having a display unit, a text or an image related to the control state of the image display device 100 may be displayed on the display unit of the remote control device 200. The user can confirm the control status of the image display apparatus 100 through the text or the image displayed on the display unit of the remote control apparatus 200. [

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.

&Lt; Desc /

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, a subtitle 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 a convolution decoder, a deinterleaver, and a reed-solomon decoder 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.

The 3D image signal format may be determined according to a method of arranging the left eye image and the right eye image generated to implement the 3D image. The manner in which the left eye image and the right eye image are arranged left and right is called a side by side format. The method of arranging the left eye image and the right eye image up and down is called a top / down format. The method of arranging the left eye image and the right eye image in a time-division manner is called a frame sequential format. The method of mixing the left eye image and the right eye image line by line is referred to as an interlaced format. A method of mixing the left eye image and the right eye image on a box basis 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 caption generation unit 174 may generate an OSD (On Screen Display) signal. Specifically, the caption generation unit 174 can generate a caption associated with an image to be displayed on the display unit 180. The caption generation unit 174 may generate a caption related to an image to be displayed on the display unit 180 from a video signal input from the outside or a data signal associated with the video signal output from the demultiplexer 172. [

The data signal may include caption information of an image currently being reproduced by the image display apparatus 100. [ In this case, the caption generation unit 174 can generate the caption by referring to the caption information included in the data signal.

In addition, the data signal may include information about a place where caption information of an image currently being reproduced by the image display apparatus 100 is stored. For example, the caption information may be stored in any network server. In this case, the caption generation unit 174 can generate the caption by referring to the caption information stored in an arbitrary network server through the network interface unit 120. As another example, the caption information may be stored in the memory of the video display device 100. [ In this case, the caption generation unit 174 can generate the caption by referring to the caption information stored in the memory.

The format of the subtitle generated by the subtitle generation unit 174 may be converted to be suitable for output to the display unit 180 through the formatter 175. [ In addition, the formatter 175 can convert the format so that the caption generated by the caption generation unit 174 can be displayed as a 3D object. The display unit 180 can display the subtitles generated by the subtitle generating unit 174.

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.

&Lt; Desc /

4A and 4B are perspective views of an image display apparatus 100 according to an embodiment of the present invention and a spatial remote controller 201 capable of inputting an instruction to an image display apparatus.

The space remote controller 201 is one of the remote control devices 200 that can input commands to the image display device 100. In this embodiment, the spatial remote controller 201 transmits and receives signals in accordance with the RF communication standard with the image display apparatus 100. 4A, a pointer 202 corresponding to the spatial remote controller 201 may be displayed on the image display apparatus 100.

The user can move or rotate the space remote controller 201 up, down, left, right, back and forth. The pointer 202 displayed on the video display device 100 corresponds to the motion of the spatial remote controller 201. [ 4B shows a bar moving on the image display device 100 in response to the movement of the spatial remote controller 201. In FIG.

4B, when the user moves the spatial remote controller 201 to the left, the pointer displayed on the image display device 100 also moves to the left corresponding to the pointer. In the present embodiment, the spatial remote controller 201 has a sensor capable of discriminating a motion. Information on the motion of the spatial remote controller 201 sensed through the sensor of the spatial remote controller 201 is transmitted to the image display apparatus 100. The image display apparatus 100 determines the operation of the spatial remote controller 201 from the information on the motion of the spatial remote controller 201 and calculates the coordinate value of the pointer 202 corresponding thereto.

4A and 4B illustrate an example in which the pointer 200 displayed on the display 170 moves in correspondence with the up, down, left, right, or rotation of the spatial remote controller 201. FIG. The moving speed and the moving direction of the pointer 200 may correspond to the moving speed and the moving direction of the spatial remote controller 201. In this embodiment, the pointer displayed on the video display device 100 is set to move in response to the operation of the spatial remote controller 201. [ As another example, it is possible to set a predetermined command to be inputted to the video display device 100 in response to the operation of the spatial remote controller 201. That is, when moving the remote control 201 back and forth, the size of the image displayed on the image display device 200 can be enlarged or reduced. Therefore, the present embodiments are not intended to limit the scope of the present invention.

5,

5 is a flow chart referred to the explanation of the operation method of the video display device according to the embodiment of the present invention. In the present embodiment, the video display apparatus 100 can display on the display unit 180 the subtitles corresponding to the video being reproduced and the video being reproduced. The user can determine the reproduction time point of the image being reproduced in the image display apparatus 100 by using the caption corresponding to the image being reproduced. The image display apparatus 100 can reproduce the image from the time point selected by the user through the caption and display the related image on the display unit 180. [

When the image is reproduced in the image display apparatus 100, the display unit 180 of the image display apparatus 100 can display the image of the image being reproduced (S110). In addition, the display unit 180 of the image display apparatus 100 may display a screen of the subtitles related to the image being reproduced (S120). The video display apparatus 100 can display the caption screen on the display unit 180 when the caption display command is input to the video display apparatus 100. [ In addition, the video display apparatus 100 can display the caption screen on the display unit 180 when it is determined that the caption information related to the video being reproduced exists. The presence or absence of the caption information related to the image being reproduced can be determined by referring to the data signal associated with the image being reproduced.

The video display apparatus 100 may display an object corresponding to the subtitle time information on the subtitle screen (S130). The object displayed on the display unit 180 of the image display apparatus 100 may be a text or an image indicating the reproduction time point of the image synchronized with the caption. In addition, the object may be a thumbnail of an image synchronized with the caption. Also, the caption included in the caption screen may be a linked object with the playback time of the image synchronized with the caption.

The image display apparatus 100 may determine whether a selection command of a time information corresponding object is input to the image display apparatus 100 (S140). The selection command of the time information corresponding object may be contained in the signal transmitted by the remote control device 200. [ For example, the user can operate the remote control device 200 so that the pointer 202 displayed to correspond to the signal transmitted from the remote control device 200 is located in the time information corresponding object. Thereafter, the user can operate an OK button or the like provided in the remote control device 200. The remote control device 200 can transmit a signal including an instruction corresponding to the OK button to the image display apparatus 100. [ When the pointer 202 is positioned in the time information corresponding object, the image display apparatus 100 determines that the time information corresponding object selection command in which the pointer is located is input when a signal including the command corresponding to the OK button is received .

The image display apparatus 100 can display an image with reference to time information corresponding to the selected object (S150). That is, the control unit 170 of the image display apparatus 100 can process the image signal output to the display unit 180 so that the image is reproduced from the time point corresponding to the time information corresponding to the selected object. The display unit 180 displays an image according to the processed video signal. Accordingly, the display unit 180 displays the image at the time corresponding to the selected object.

6,

6 is a diagram for explaining a screen displayed by the display unit 180 of the image display apparatus 100 according to an embodiment of the present invention.

6A, the display unit 180 of the video display device 100 displays a video screen 311 to be reproduced by the video display device 100. As shown in FIG. In the present embodiment, the image reproduced by the image display apparatus 100 is a moving image. Accordingly, the display unit 180 may display a progress bar 312 indicating the total reproduction time and reproduction time of the currently reproduced image.

The remote control device interface unit 140 of the video display device 100 can receive signals transmitted by the remote control device 200. [ The remote control device interface unit 140 may output information on the motion of the remote control device 200 included in the signal transmitted by the remote control device 200 to the control unit 170. [ The controller 170 generates a video signal capable of displaying a pointer corresponding to the motion of the remote controller 200 based on the information about the motion of the remote controller 200, (180). The display unit 180 may display the pointer 313 corresponding to the motion of the remote control device 200. [

6B, when a caption display command is input to the image display apparatus 100 when the image is reproduced in the image display apparatus 100, the display unit 180 displays the caption screen 314 related to the currently reproduced image, Can be displayed. When the icon 314 corresponding to the caption display command is input as the selection command, the video display device 100 determines that the caption display command is input. The icon 314 selection command corresponding to the subtitle display command is input to the video display device 100 when the OK button or the like of the remote control device 200 is manipulated while the pointer 313 is positioned on the icon 314 .

If the controller 170 determines that the caption display command has been input, the controller 170 may refer to the caption information related to the image to be reproduced. If the video display apparatus 100 can refer to the caption information related to the video currently being reproduced, the caption generation unit 174 generates and outputs a caption related to the video to be reproduced at present. The display unit 180 can display the caption screen 315 including the caption generated by the caption generation unit 174. [

In addition, the display unit 180 may display an object representing time information corresponding to the caption included in the caption screen 315. [ In the present embodiment, the display unit 180 displays time information corresponding to the caption included in the caption screen 315 using the text icon 316. [ The user can confirm the information on the reproduction time point of the image synchronized with the caption displayed on the current caption screen 315 through the text icon 316. [

7,

7 is a diagram for explaining a screen displayed by the display unit 180 of the image display apparatus 100 according to an embodiment of the present invention. In the present embodiment, the user can input an object selection command indicating the time information corresponding to the caption to the video display device 100. [ The image display apparatus 100 may reproduce an image from a time point corresponding to time information represented by the object according to the input selection command and display the related image on the display unit 180. [

As shown in FIG. 7A, the subtitle screen 321 displayed on the display unit 180 may include a scroll bar 322 for scrolling the subtitles. The display unit 180 of the image display apparatus 100 may display a pointer 323 corresponding to the signal transmitted from the remote control apparatus 200. [ The user can display a caption corresponding to an image at a predetermined time on the caption screen 321 using the pointer 323 and the scroll bar 322. [

As shown in FIG. 7B, the user can move the remote control device 200 so that the pointer 323 is located in the text object 324 representing the time information. The text object 324 indicates information on the reproduction timing of the image synchronized with the caption. In this embodiment, the text object 324 is 'Want to watch TV?' Indicates that the reproduction time point of the video corresponding to the caption is '00: 55 '.

When the OK button or the like of the remote control device 200 is operated in a state where the pointer 323 is located in the text object 324, the text object 324 selection command is input to the image display device 100. [ The control unit 170 may process the video signal output to the display unit 180 so that an image corresponding to the time indicated by the text object 324 is reproduced .

In this embodiment, the time information indicated by the text object 324 is 55 minutes. Therefore, the control unit 170 reproduces an image from a point corresponding to 55 minutes. The playback time of the video displayed on the video screen 325 of the display unit 180 is 55 minutes. The user can confirm that the reproduction time of the current image is 55 minutes through the progressive bar 326. [

<Explanation of FIG.

8 is a diagram referred to explain a screen displayed by the display unit 180 of the image display apparatus 100 according to an embodiment of the present invention.

The control unit 170 may process the video signal output to the display unit 180 so that the thumbnail 332 is included in the caption screen 331. In this case, The thumbnail included in the caption screen 331 is a thumbnail of the image corresponding to the time point synchronized with the caption. Accordingly, in this embodiment, the thumbnail 332 included in the caption screen 331 is a thumbnail of a video having a playback time of 55 minutes among the videos currently being played back.

The user can confirm the image synchronized with the predetermined caption through the thumbnail 332 included in the caption screen 331. [ In addition, the user can select the thumbnail 332 and display the image corresponding to the time point on the image screen 333.

&Lt; Desc /

9 is a diagram for explaining a screen displayed by the display unit 180 of the image display apparatus 100 according to an embodiment of the present invention.

In this embodiment, the user can display the bookmark on the subtitle corresponding to the predetermined time information in the subtitle screen 341. [ When the user operates the OK button or the like provided on the remote control device 200 while the pointer 342 is positioned in a predetermined area of the caption screen 341, the remote control device 200 displays a command corresponding to the operated OK button Can be transmitted to the image display apparatus 100. [0050]

The video display apparatus 100 may display the pointer 342 when a command corresponding to an OK button is included in a signal transmitted from the remote control apparatus 200 while the pointer 342 is positioned in a predetermined area of the caption screen 341. [ It can be determined that the bookmark command of the subtitle corresponding to the area where the title is located is input. Accordingly, the controller 170 processes the video signal output to the display unit 180 such that the bookmark icon 343 is displayed in the area where the pointer 342 is located.

<Description of FIG.

10 is a diagram referred to explain a screen displayed by the display unit 180 of the image display apparatus 100 according to an embodiment of the present invention.

In the present embodiment, the video display apparatus 100 can search for the caption corresponding to the text input in the caption search window and display the caption on the caption screen. The user can select the subtitle displayed on the subtitle screen and reproduce the video corresponding to the subtitle corresponding to the predetermined text on the video display device 100. [

10A, when a caption search window display command is input to the video display apparatus 100, the control unit 170 displays the caption search window 351 on the display unit 180 so that the caption search window 351 can be displayed on the display unit 180 Can be processed.

The user can input a text to be searched out of the subtitles by using the keypad 352 included in the subtitle search window 351. [ The text input to the image display device 100 through the keypad 352 may be displayed on the text input bar 353. Also, the display unit 180 may display a search word list 354 matching the text displayed on the text input bar 353.

The user can select an OK icon included in the subtitle search window 351 by using the pointer 355. [ The video display apparatus 100 can search for a subtitle matched with the text input in the subtitle search window 351. [ The caption matched with the text input to the caption search window 351 can be displayed on the caption screen 356 as shown in FIG. 10B. The control unit 170 may shade the caption 357 matching the text input in the caption search window 351. [ Accordingly, the user can easily check the caption matching the caption search term input to the image display apparatus 100 through the caption search window 351.

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.

100: video display device 140: remote control device interface part
170: control unit 200: remote control device
201: Space remote controller 202: Pointer

Claims (15)

Reproducing an image based on a video signal;
Displaying a caption corresponding to the image generated by the caption generation unit and a thumbnail of an image at a time point corresponding to the caption on a display unit;
Determining whether a command for selecting the thumbnail is input; And
And reproducing an image corresponding to the thumbnail when it is determined that an instruction to select the thumbnail is input. delete delete delete delete delete The method according to claim 1,
And displaying a pointer corresponding to a signal transmitted from the remote controller of the image display apparatus on the display unit;
Wherein the thumbnail selected in accordance with the command to select the thumbnail is a thumbnail where the pointer is located if the signal transmitted from the remote controller includes a selection approval command. 8. The method of claim 7,
Wherein the selection approval command is a command included in a signal transmitted from the remote control device to the video display device when an OK button included in the remote control device is operated. The method according to claim 1,
Displaying a subtitle search window on the display unit;
Displaying a text corresponding to a signal transmitted from a remote control device of the video display device on the subtitle search window; And
Searching for a subtitle matching the text displayed on the subtitle search window and displaying the subtitle on the display unit. 10. The method of claim 9,
Further comprising the step of: determining whether a signal transmitted from the remote control device of the video display device includes a subtitle search window display command;
And displaying the subtitle search window on the display unit when it is determined that the subtitle search window display command is included. A display unit for displaying a thumbnail of an image being reproduced, a caption, and a video at a time point corresponding to the caption;
An interface unit receiving a signal transmitted from the remote control device; And
When the command to select the thumbnail is included in the remote control apparatus transmission signal received through the interface unit and the command to select the thumbnail is included in the remote control apparatus transmission signal, And a controller for processing a video signal output to the display unit so that an image corresponding to the thumbnail is reproduced. 12. The method of claim 11,
Wherein the control unit processes a video signal output to the display unit such that a pointer corresponding to a signal transmitted from the video display unit is displayed on the display unit. 12. The method of claim 11,
Wherein the control unit processes the video signal output to the display unit such that an object representing time information corresponding to a subtitle displayed on the display unit is displayed on the display unit. 12. The method of claim 11,
Wherein the control unit processes a video signal output to the display unit such that a thumbnail of an image corresponding to the caption is displayed on the display unit. 12. The method of claim 11,
The control unit determines whether or not a caption search window display command is included in the remote control device transmission signal received through the interface unit. If it is determined that the caption search window display command is included, Wherein the video signal processing unit processes the video signal output to the display unit so as to be displayed on the display unit.

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