KR101680038B1 - Apparatus for displaying image and method for operating the same - Google Patents

Abstract

The present invention relates to an image display apparatus for displaying a thumbnail image and an operation method thereof. A method of operating an image display apparatus according to an embodiment of the present invention includes receiving thumbnail extraction target area information specifying a portion from which thumbnails are extracted from a multimedia file, extracting a thumbnail image in the thumbnail extraction target area, And storing the thumbnail image. According to the embodiment of the present invention, the user can select a thumbnail image of each file and prevent a meaningless image from being extracted as a thumbnail image.

Description

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

The present invention relates to an image display apparatus and an operation method thereof. More particularly, the present invention relates to a video display device and a method of operating the same that allow a user to select a thumbnail.

A video display device is a device having a function of displaying an image that a user can view. Also, the video display device can display a broadcast selected by the user among the broadcast signals transmitted from the broadcasting station on the display. Currently, the trend is shifting from analog broadcasting to digital broadcasting worldwide.

Such digital broadcasting transmits digital video and audio signals and provides a clear screen with high data resolution and low error rate compared to analog broadcasting, advantageous for error correction, and high resolution. In addition, with the implementation of digital broadcasting, bidirectional services have become possible.

In addition, the video display device is capable of simultaneously providing video and sound, and has an advantage that the satisfaction and convenience of the user can be further improved when the audio is provided. A conventional video display device can reproduce pictures, music, moving pictures, etc. stored in an external storage medium, which is stored in the internal storage device or connected thereto. A thumbnail picture for the multimedia files is generated and a thumbnail picture can do.

However, in the process of generating a thumbnail image of a multimedia file such as a moving image, it is often the case that one of the frames included in the moving image is extracted and used as a thumbnail image. In the past, It was difficult to reflect. In addition, since the arbitrary frame is extracted as the thumbnail image, the thumbnail image does not represent or represent the corresponding multimedia file.

According to an embodiment of the present invention, there is provided an image display apparatus and an operation method thereof, which can reflect a user's intention in extracting a thumbnail image of a multimedia file and effectively display contents of the multimedia file.

According to an aspect of the present invention, there is provided a method for extracting a thumbnail image, the method comprising: inputting thumbnail extraction target region information specifying a portion from which a thumbnail is extracted from a multimedia file; extracting a thumbnail image within the thumbnail extraction target region; A method of operating an image display device including the steps of:

According to another aspect of the present invention, there is provided an image processing apparatus including a remote control interface unit for inputting thumbnail extraction target area information specifying a portion from which a thumbnail is extracted from a multimedia file, a control unit for extracting a thumbnail image in the thumbnail extraction target area, There is provided an image display apparatus including a storage unit for storing a thumbnail image.

According to the embodiment of the present invention, the user can directly set which part of the entire reproduction area of the multimedia file the thumbnail image is to be extracted. Also, when a plurality of thumbnail images are extracted even in the area, the candidate thumbnail images are displayed, and a thumbnail image selected by the user as the most suitable one can be stored as a thumbnail image of the multimedia file. Therefore, a meaningless image can be prevented from being adopted as a thumbnail image. The user can easily grasp the contents or characteristics of the corresponding multimedia file by viewing the list of the thumbnail images.

1 is an internal block diagram of an image display apparatus according to an embodiment of the present invention.
2 is an internal block diagram of the video / audio processing unit of FIG.
3A and 3B are diagrams showing an example of the remote control apparatus of FIG.
4 is an internal block diagram of an example of the remote control apparatus of Fig.
5 is a flowchart illustrating an operation method of an image display apparatus according to an embodiment of the present invention.
6 is a flowchart illustrating an operation method of an image display apparatus according to another embodiment of the present invention.
FIGS. 7 to 9 are views showing a state in which a thumbnail image is selected 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.

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

1, an image display apparatus 100 according to an exemplary embodiment of the present invention includes a broadcast signal receiving unit 110, a network interface unit 120, an external device input / output unit 130, a remote control interface unit 140, A control unit 150, a storage unit 160, a video / audio processing unit 170, a display unit 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 may convert the received RF broadcast signal into an intermediate frequency signal, a baseband image, or a voice signal, and output the converted signal to the video / audio processing unit 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.

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 video / audio processing unit 170 of the video display device 100 through the connected external device. Also, the video / audio processing unit 170 can output the processed video, audio, or data signals 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 other electronic devices. The video display device 100 is connected to other electronic devices in accordance with communication standards such as Bluetooth, Radio Frequency Identification (RFID), IrDA (Infrared Data Association), UWB (Ultra Wideband), ZigBee, Can be connected.

Also, the external device 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 set- To the voice processing unit 170. Also, the video / audio processing unit 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.

Also, the external device input / output unit 130 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 remote control interface unit 140 may include a wireless communication unit capable of transmitting and receiving signals wirelessly with the remote control device and a coordinate calculation unit capable of calculating the coordinates of the pointer corresponding to the motion of the remote control device. The remote control interface unit 140 can wirelessly transmit and receive signals to and from the remote control device through the RF module. Also, the IR module can receive the signal transmitted by the remote control device according to the IR communication standard.

The coordinate calculation unit of the remote control interface unit 140 can correct the camera shake or error from the signal corresponding to the motion of the remote control device received through the wireless communication unit of the remote control interface unit 140. [ The coordinate calculation unit can calculate the coordinates of the pointer to be displayed on the display of the image display device 100 after the camera shake or error is corrected.

The remote control device transmission signal input to the image display device 100 through the remote control interface unit 140 is output to the control unit 150 of the image display device 100. The control unit 150 can discriminate the information about the motion or the key operation of the remote control device from the signal transmitted from the remote control device, and control the image display device 100 accordingly.

As another example, the remote control device may calculate the pointer coordinates corresponding to the motion and output it to the remote control interface unit 140. In this case, the remote control interface unit 140 can transmit information about the coordinates of the received pointer to the control unit without any additional shaking or error correction process.

The control unit 150 controls the overall operation of the image display apparatus 100. The control unit 150 can receive a signal transmitted from the remote control device through the remote control interface unit 140. In addition, a command can be input through the local key provided in the image display apparatus 100. The controller 150 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 150 controls the broadcast signal receiving unit 110 to receive the broadcast signal provided from the selected channel through the broadcast signal receiving unit 110. In addition, the video / audio processing unit 170 is controlled so that the video signal and the audio signal of the selected channel are processed. In addition, the control unit 170 controls the video / audio processing unit 170 so that channel information selected by the user can be output through the display unit 180 or the audio output unit 185 together with the video signal and the audio signal.

As another example, the user can input another kind of video or audio output command through the remote control device. That is, the user may desire to watch a camera or camcorder image signal inputted through the external device input / output unit 130 instead of the broadcast signal. In this case, the control unit 150 controls the video / audio processing unit 170 to output the video or audio signal input through the USB input unit of the external device input / output unit 130 or the like through the display unit 180 or the audio output unit 185 Can be controlled.

The image display apparatus 100 according to the present invention may further include a user interface controller (not shown). The user interface control unit generates a graphic user interface associated with the image display apparatus 100. The graphic user interface generated through the user interface control unit is output to the display unit 180 or the sound output unit 185 through the video / audio processing unit 170. [ The graphic user interface generated by the user interface control unit may include a command included in the signal received through the remote control device, a command input through the local key included in the image display device 100, May be changed.

For example, when a signal is received through the remote controller, the user interface controller may generate a pointer video signal corresponding to the motion of the remote controller and output the pointer video signal to the video / audio processor 170. The control unit 150 may output information on the pointer coordinates calculated from the signal received through the remote control device to the user interface control unit. The user interface control unit can generate a pointer image signal based on the information about the pointer coordinates output from the control unit 150. [ The video / audio processing unit 170 processes the video signal output to the display unit 180 so that a pointer corresponding to the pointer video signal generated by the user interface control unit is displayed on the display unit 180. The pointer displayed on the display unit 180 corresponds to the movement of the remote control device.

As another example, the user interface control unit may generate a video signal of a user interface composed of a command included in a signal received through a remote control device, a command input through a local key, or an object corresponding to an operation of the video display device 100 And output it to the video / audio processing unit 170.

The object includes various kinds of widgets displayed on the display unit 180 so as to be able to input commands to the image display apparatus 100 or to display information related to the image display apparatus 100. [ The widget can be displayed as an OSD (On Screen Display).

The object includes an image or text representing information about the image displayed on the image display apparatus 100 or the image display apparatus 100, such as the sound output (volume) level of the image display apparatus 100, the channel information, do. The object may be displayed in the image display device 100 or may be implemented in a form (ex) movie according to the kind of information to be displayed), and the object of the present embodiment does not limit the scope of the present invention.

A widget is a graphical user interface (GUI) that allows a user to directly change specific data. For example, the widget may be one of a volume control button, a channel control button, a menu, an icon, a navigation tab, a scroll bar, a progress bar, a text box, and a window displayed on the display unit 180 of the image display apparatus 100 . The type of the widget implemented in the image display apparatus 100 may be changed in accordance with the specific specification of the GUI that can be implemented or implemented in the image display apparatus 100 and the widget of the present embodiment does not limit the scope of rights of the present invention No.

The storage unit 160 may store information related to a video signal input to the video display device 100 and a voice signal or a data signal associated with the video signal. For example, when a user records an image being reproduced in the image display apparatus 100, the recorded image data may be stored in the storage unit 160. [ The control unit 150 may control the video / audio processing unit 170 so that the video stored in the storage unit 160 may be displayed on the display unit 180 . In addition, the storage unit 160 may store information necessary for generating a graphic user interface in the user interface unit controller.

The video / audio processing unit 170 controls the video / audio processing unit 170 based on the video signal or audio signal included in the signal received through the broadcast signal receiving unit 110, the network interface unit 120, the external device input / output unit 130, The signal is processed so as to be suitable for the display unit 180 and the sound output unit 185. The video / audio processing unit 170 may be provided in the control unit 150 or may be a separate module electrically connected to the control unit 150. In the embodiment described with reference to FIG. 1, a video / audio processing unit 170 is provided in the control unit 150. The video / audio processing 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.

The video / audio processing unit 170 can process the video signal or the audio signal inputted through the user interface control unit so that the video signal or the audio signal can be output from the display unit 180 or the sound output unit 185. The user can grasp the operation state of the image display apparatus 100 using the graphic user interface displayed on the display unit 180 based on the image signal or the voice signal generated by the user interface control unit. Also, the user can input a command related to the image display apparatus 100 using the graphic user interface displayed on the display unit 180. [

The video / audio processing unit 170 can select a video signal or a voice signal to be processed in response to a user command input through the control unit 150. The video signal or audio signal processed by the video / audio processing unit 170 is a video or audio signal output through the display unit 180 or the audio output unit 185. The command input through the control unit 150 may include a broadcast channel selection command, a content selection command to be reproduced among the contents input to the image display apparatus 100, and the like.

 The video / audio processing 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. [ Also, the video / audio processing unit 170 can process the video signal so that the user interface generated through the user interface control unit is three-dimensionally displayed on the display unit 180. A detailed description of the video / audio processing unit 170 will be given later with reference to FIG.

The display unit 180 displays a video signal, a data signal, an OSD signal processed by the video / audio processing unit 170, a video signal and a data signal received through the external device input / output unit 130 as R, G, B Signal to generate a 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.

2 is an internal block diagram of the video / audio processing unit 170 of the video display device according to the embodiment of the present invention.

The video / audio processing unit 170 may include a demodulating unit 171, a demultiplexing unit 172, a thumbnail generating unit 173, an OSD generating unit 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 thumbnail generating unit 173 generates a thumbnail corresponding to a video signal included in the demultiplexed signal or a video signal input through the network interface unit 120 and the external device input / output unit 130. In this case, the thumbnail generating unit 175 may further include a decoder for decoding the demultiplexed video signal or a scaler for adjusting the resolution of the decoded video signal so that the resolution of the decoded video signal can be displayed on the display unit 180. In this embodiment, the thumbnail consists of a partial image of an image generated based on the video signal. Accordingly, the user can confirm the image based on the video signal input to the video display device 100 through the thumbnail.

As another example, a thumbnail may represent content information composed of an image generated based on a video signal. For example, the content information displayed as a thumbnail may be a channel through which a video signal is transmitted, an external device, a broadcast name, or a title name.

The OSD generation unit 174 may generate an OSD displayed on the display unit 180. [ The OSD may display information related to an image displayed on the display unit 180. [ Also, the user can grasp the operation state of the image display apparatus 100 using the OSD. For example, when a channel browser screen including a thumbnail corresponding to an image is displayed on the display unit 180 through the thumbnail generating unit 173, the OSD generating unit 174 generates a text indicating current channel browser screen related information An icon for inputting the channel switching command, and the like may be generated and displayed on the display unit 180.

The formatter 175 can determine the format of the inputted video signal by referring to the data signal related to the video signal. The formatter 175 converts the input video signal into a format suitable for the display unit 180 and outputs the format to the display unit 180.

The video display device 100 of this embodiment can display a 3D image on the display unit 180. [ In this case, 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 video display device 100 having the user interface control unit separately controls the video signal output from the thumbnail generating unit 173 and the OSD generating unit 174 by a mixer capable of mixing the user interface video signal output from the user interface control unit As shown in FIG. The mixer may be provided in the formatter 175 for mixing the video signals output from the thumbnail generating unit 173 and the OSD generating unit 174.

3A and 3B are diagrams showing an example of the remote control apparatus of FIG.

The video display device can be controlled by a signal transmitted from the remote control device. The user can input commands such as power on / off, channel up / down, volume up / down to the video display device using the remote control device. The remote control device transmits a signal including a command corresponding to the operation of the user to the video display device. The video display device performs an operation according to a command included in the received signal.

The remote control device can transmit signals to the image display device according to the IR communication standard. Also, the remote control device can transmit a signal to the image display device or receive the signal transmitted from the image display device according to another type of wireless communication standard. There may be a remote control device which can detect a movement of a user of the remote control device and transmit a signal including a command corresponding to the motion to the image display device. In the present embodiment, this remote control device is referred to as a space remote control.

3A and 3B are perspective views of an image display apparatus 100 according to an embodiment of the present invention and a space remote controller 201 capable of inputting an instruction to an image display apparatus.

In this embodiment, the spatial remote controller 201 can transmit and receive signals in accordance with the RF communication standard with the image display apparatus 100. 3A, the image display apparatus 100 may display a pointer 202 corresponding to the spatial remote controller 201. [

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. [ FIG. 3B shows a state in which the pointer 202 displayed on the image display device 100 moves in response to the movement of the spatial remote controller 201. FIG.

In FIG. 3B, when the user moves the spatial remote controller 201 to the left, the pointer 202 displayed on the image display device 100 also moves to the left corresponding thereto. In this embodiment, the spatial remote controller 201 may be provided with a sensor capable of detecting movement. 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 can calculate the coordinates of the pointer 202 from the information on the motion of the spatial remote controller 201. [ The image display apparatus 100 can display the pointer 202 so as to correspond to the calculated coordinates.

As shown in FIGS. 3A and 3B, the pointer 202 displayed on the image display device 100 can be moved corresponding to the up, down, right, left, or rotation of the spatial remote controller 201. The moving speed and the moving direction of the pointer 202 may correspond to the moving speed and the moving direction of the spatial remote controller 201.

As another example, a predetermined command may be set to be input to the image display apparatus 100 in response to the movement of the spatial remote controller 201. For example, when moving the remote control 201 back and forth, the size of the image displayed on the image display device 100 may be enlarged or reduced. Therefore, the present embodiments are not intended to limit the scope of the present invention.

4 is an internal block diagram of a spatial remote controller 201 according to an embodiment of the present invention.

The space remote controller 201 includes a wireless communication unit 220, a user input unit 230, a sensor unit 240, an output unit 250, a power supply unit 260, a storage unit 270, a controller 280 ).

The wireless communication unit 220 transmits and receives signals to and from the video display device 100. In this embodiment, the spatial remote controller 201 may include an RF module 221 capable of transmitting and receiving signals to and from the image display apparatus 100 according to the RF communication standard. The spatial remote controller 201 may include an IR module 223 capable of transmitting and receiving signals to and from the image display apparatus 100 according to the IR communication standard.

In the present embodiment, the spatial remote controller 201 transmits a signal containing information on the motion of the spatial remote controller 201 to the image display device 100 through the RF module 221. In addition, the spatial remote controller 201 can receive a signal transmitted from the image display apparatus 100 through the RF module 221. [ Also, the spatial remote controller 201 can transmit commands to the image display apparatus 100 via the IR module 223, such as power on / off, channel change, volume change, and the like, if necessary.

The user input unit 230 may include a keypad or a button. The user can input a command related to the image display apparatus 100 to the space remote controller 201 by operating the user input unit 230. [ When the user input unit 230 includes a hard key button, the user can input a command related to the image display apparatus 100 to the space remote controller 201 through a push operation of the hard key button. When the user input unit 230 has a touch screen, the user can touch a soft key of the touch screen to input a command related to the image display apparatus 100 to the space remote controller 201. In addition, the user input unit 230 may include various types of input means such as a scroll key, a jog key, and the like that can be operated by the user, and the present invention does not limit the scope of the present invention.

The sensor unit 240 may include a gyro sensor 241 or an acceleration sensor 243. The gyro sensor 241 can sense information on the motion of the spatial remote controller 201. [ For example, the gyro sensor 241 can sense information about the operation of the spatial remote controller 201 on the basis of the x, y, and z axes. The acceleration sensor 243 can sense information on the moving speed of the spatial remote controller 201 and the like.

The output unit 250 may output an image or voice signal corresponding to the operation of the user input unit 230 or corresponding to the signal transmitted from the image display apparatus 100. The user can recognize whether the user input unit 230 is operated or whether the image display apparatus 100 is controlled through the output unit 250.

For example, the output unit 250 may include an LED module 251 that is turned on when the user input unit 230 is operated or a signal is transmitted to or received from the image display device 100 through the wireless communication unit 220, a vibration module 253 for outputting sound, an acoustic output module 255 for outputting sound, or a display module 257 for outputting an image.

The power supply unit 260 supplies power to the space remote controller 201. The power supply unit 260 can reduce the power consumption by stopping the power supply when the space remote controller 201 does not move for a predetermined time. The power supply unit 260 may resume power supply when a predetermined key provided in the space remote controller 201 is operated.

The storage unit 270 may store various kinds of programs, application data, and the like necessary for controlling or operating the spatial remote controller 201. If the spatial remote controller 201 wirelessly transmits and receives a signal through the image display device 100 and the RF module 221, the spatial remote controller 201 and the image display device 100 transmit and receive signals through a predetermined frequency band . The control unit 280 of the spatial remote controller 201 stores information on a frequency band or the like capable of wirelessly transmitting and receiving a signal with the video display device 100 paired with the spatial remote controller 201 in the storage unit 270, .

The control unit 280 controls various matters related to the control of the spatial remote controller 201. The control unit 280 transmits a signal corresponding to a predetermined key operation of the user input unit 230 or a signal corresponding to the movement of the spatial remote controller 201 sensed by the sensor unit 240 to the image display apparatus 100).

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

The remote control interface unit 140 receives the thumbnail extraction target area information specifying a portion from which a thumbnail is extracted from the multimedia file (S510). Conventionally, the area from which the thumbnail image is extracted from the entire area of the multimedia file is a fixed area or an arbitrary area, so that the user can not determine from which part the thumbnail image is to be extracted. Therefore, according to the conventional technique, it is often the case that a meaningless scene is extracted as a thumbnail image or a thumbnail image does not represent or represent the corresponding multimedia file according to the thumbnail extraction process. In addition, according to the above-described method, it is needless to say that the taste, intention and convenience of each user can not be reflected in the selection process of the thumbnail image at all.

Therefore, in the embodiment of the present invention, it is desired that the user can directly set which part of the entire playback area of the multimedia file the thumbnail image is to be extracted. In addition, when a plurality of thumbnail images are extracted even in the area, the candidate thumbnail images are displayed, and a thumbnail image, which is most suitable for the user, may be selected as a thumbnail image of the multimedia file.

The thumbnail extraction target area information can be input to the image display device by various methods. First, a user can input thumbnail extraction target area information by inputting a user signal using a remote control device such as a spatial remote controller. For example, when a multimedia file is divided into several chapters, one of the chapters may be selected, or a range of the playback time may be input to set the thumbnail extraction target area. That is, when the thumbnail extraction target area information for setting the reproduction time '15 to 30 minutes to 20 minutes and 40 seconds' as the thumbnail extraction target area is input, the thumbnail image is extracted within the range of the moving image reproduced within the time. Or a progressive bar is displayed, the user may point to a specific location of the progress bar (for example, the start and end portions of the thumbnail extraction target area) with the pointer of the space remote control, or drag a specific portion of the progress bar The thumbnail extraction target area information can be input.

The control unit 150 extracts a thumbnail image within the thumbnail extraction target area (S520). Generally, a thumbnail image is generated by extracting a specific image from a multimedia file. In the embodiment of the present invention, a specific region is designated from the entire playback region of the multimedia file, and an image extracted in the region is used as a thumbnail image. To this end, an area for extracting a thumbnail image is referred to as a thumbnail extraction target area, and information for designating an area for extracting a thumbnail image is referred to as thumbnail extraction target area information.

The storage unit 160 stores the extracted thumbnail image (S530). The display unit 180 may display a thumbnail image extracted before or after the thumbnail image is stored (S540). If the corresponding multimedia file is displayed in the file list, the corresponding multimedia file is played, or a command for displaying the thumbnail image is inputted, the stored thumbnail image may be displayed on the display unit 180. [

6 is a diagram illustrating an operation method of an image display apparatus according to another embodiment of the present invention.

In the embodiment described with reference to FIG. 6, the remote control interface unit 140 receives the thumbnail extraction target area information (S610). The control unit 150 or the video / audio processing unit 170 extracts a thumbnail image within the thumbnail extraction target area set by the thumbnail extraction target area information (S620). Here, the control unit 150 or the video / audio processing unit 170 can extract and generate a thumbnail image by extracting an I frame (Intra frame, I frame) existing in the thumbnail extraction target area.

The types of frames can be classified into three types, I frame, P frame, and B frame. An I frame is a frame that has information corresponding to a complete picture, and therefore is not dependent on other frames. I frames are also referred to as key frames. A Predicted frame (P frame) is a frame that depends on the next frame. That is, it is a frame that has only information about elements that are different from the next frame or changed contents. And a B-frame (Bi-Predictive frame, B frame) is a frame that depends on the previous frame and the next frame. The compressibility of the I frame, the P frame, and the B frame is the order of the I frame <P frame <B frame. This is irrelevant to the fact that the I frame has the most accurate frame information. Therefore, when extracting a thumbnail image, a complete scene can be displayed with only one frame, and an I frame having the most accurate information can be used independently without any other frame.

According to the conventional method of extracting an I frame of a specific area of a multimedia file and using the extracted I frame as a thumbnail image, a thumbnail image of a plurality of multimedia files can be displayed on one screen or one OSD area. However, when the I frame is extracted from an arbitrary area or a fixed specific area, a thumbnail image irrelevant to the intention or taste of the user may be extracted and stored. Therefore, as in the embodiment of the present invention, when a certain restriction is applied to a candidate thumbnail image or a candidate I frame with an I frame existing in a region designated by the user, the user can select a thumbnail image whose representativeity of the multimedia file is guaranteed.

Here, the control unit 150 or the video / audio processing unit 170 determines whether there are two or more I frames available as a thumbnail image in the thumbnail extraction target area (S630). And the display unit 180 may display all of the I frames. That is, the display unit 180 displays two or more candidate thumbnail images. In operation S640, a user command for selecting a thumbnail image from among two or more thumbnail images is input through the remote control interface unit 140. A user command signal designating which thumbnail image from among the plurality of extracted thumbnail images is to be selected as a thumbnail image representing the corresponding multimedia file is referred to as a thumbnail selection signal.

The user can point to a candidate thumbnail image to be selected from among a plurality of candidate thumbnail images displayed on the display unit 180 of the image display apparatus using a spatial remote controller or input a serial number or an identification number of a candidate thumbnail image to be selected A thumbnail selection signal can be input.

The storage unit 160 stores the selected thumbnail image according to the thumbnail selection signal. The thumbnail image may be stored together with the corresponding multimedia file, or the thumbnail image information or the information of the selected I frame may be stored as header information of the corresponding multimedia file. (S650).

In operation S660, the display unit 180 generates a thumbnail image according to the thumbnail selection signal, and displays the selected thumbnail image when reproducing the corresponding multimedia file.

FIGS. 7 to 9 are views showing a state in which a thumbnail image is selected according to an embodiment of the present invention.

7 shows a screen displaying a list of thumbnail images of multimedia files to be extracted as thumbnails. The storage unit 160 of the image display apparatus includes a plurality of folders (Folder A, Folder B, Folder C, Folder D, Folder E), and files are stored in each folder. A list 710 of folders may also be displayed on the screen of the display unit 180. Among them, files stored in 'Folder C (715)' are exemplarily shown. Folder C 715 includes a plurality of files, in which thumbnail images generated by default are displayed for each file. 7, the thumbnail image corresponding to file 1 is "Thumbnail # 1 (720)", the thumbnail image corresponding to file 2 is "Thumbnail # 2 (725) Thumbnail # 4 (735) ", and the thumbnail image corresponding to file 5 is "Thumbnail # 5 (740) ".

Here, it is assumed that the image which can not adequately represent the file 3 is extracted as "Thumbnail # 3 (730) ". In this case, the user may designate a thumbnail extraction target area and store the thumbnail image desired by the user as a thumbnail image of file 3. Accordingly, the user can set the thumbnail extraction target area 750 using the progress bar for the file 3. It has already been described that there are various methods for specifying the thumbnail extraction target area 750.

FIG. 8 shows a screen in which a plurality of candidate thumbnail images for one of the multimedia files are displayed. In FIG. 8, a plurality of candidate thumbnail images are extracted in the thumbnail extraction target area 750 designated by the user. Here, a total of three candidate thumbnail images are extracted in the thumbnail extraction target area 750. The thumbnail images are classified into "Thumbnail # 3-1 (731) "," Thumbnail # ) "And" Thumbnail # 3-3 (733) ".

Thumbnail # 3-1 (731), Thumbnail # 3-2 (732), and Thumbnail # 3-3 (733) are thumbnails made of frames existing in the thumbnail extraction target area The user wants to designate "Thumbnail # 3-2 (732)" as a thumbnail image of file 3, among them. To this end, the user places the pointer 810 of the space remote controller in the " Thumbnail # 3-2 (732) ", and then inputs a thumbnail selection signal, Quot; thumbnail selection "button 820 to input a thumbnail selection signal.

FIG. 9 shows a screen in which a thumbnail image selected according to the description with reference to FIG. 8 is selected as a thumbnail image of the multimedia file. If "Thumbnail # 3-2 (732)" is designated as a thumbnail image of file 3 in accordance with the input of the thumbnail selection signal of the user, the corresponding thumbnail image or I frame information is stored so as to be able to match with file 3. Then, "Thumbnail # 3-2 (732)" can be displayed as a thumbnail image of file 3 in a screen displaying a list of thumbnail images or a file list.

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

Meanwhile, the operation method of the image display apparatus of the present invention can be implemented as a code that can be read by a processor on a recording medium readable by a processor included in the image display apparatus. The processor-readable recording medium includes all kinds of recording apparatuses in which data that can be read by the processor is stored. Examples of the recording medium 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.

110: broadcast signal receiver
120: Network interface unit
130: External device input / output unit
140: remote control interface unit
150:
160:
170: Video / audio processing unit
185:
200: remote control device

Claims (16)

Displaying a plurality of folders;
Displaying a default thumbnail image generated by default for a multimedia file in a first folder among the plurality of folders;
Receiving thumbnail extraction target area information specifying a portion from which the thumbnail is to be extracted from the multimedia file;
Extracting a thumbnail image within the thumbnail extraction target area; And
Storing the extracted thumbnail image as a representative thumbnail of the first folder;
And displaying the extracted thumbnail image as the representative thumbnail when displaying the first folder among the plurality of folders,
Wherein the thumbnail extraction target area information is set using a progress bar for the multimedia file. The method according to claim 1,
Power on based on a power-on signal from the IR module of the spatial remote controller; Receiving a signal including information on the operation of the spatial remote controller from the RF module of the spatial remote controller after pairing with the spatial remote controller;
Displaying a pointer based on a signal including information about an operation of the spatial remote controller;
Further comprising: selecting the extracted thumbnail image using the pointer,
And displaying the selected thumbnail image as the representative thumbnail when displaying the first folder among the plurality of folders. The method according to claim 1,
A thumbnail image generating unit for generating thumbnail images of two or more thumbnails when the two or more thumbnail images are extracted from the thumbnail extraction target area,
Receiving a thumbnail selection signal for one thumbnail image of the at least two thumbnail images,
Wherein the thumbnail image corresponding to the thumbnail selection signal is stored as a representative thumbnail of the first folder. delete The method according to claim 1,
Wherein the thumbnail image extracted in the thumbnail extraction target area is an i-frame in the thumbnail extraction target area. 6. The method of claim 5,
Wherein the information about the eye frame for displaying the thumbnail image is stored as header information of the multimedia file. The method according to claim 6,
Further comprising receiving a thumbnail selection signal for one of the at least two eye frames when the at least two eye frames exist in the thumbnail extraction target area, Information is stored as header information of the multimedia file. The method according to claim 1,
Wherein the multimedia file is a moving image file. A display unit;
A storage unit;
An interface unit that receives thumbnail extraction target area information that designates a portion of the multimedia file from which a thumbnail is to be extracted;
Controlling a display of a plurality of folders so as to display a default thumbnail image generated by default for a multimedia file in a first folder among the plurality of folders and displaying a thumbnail image for specifying a portion from which the thumbnail is extracted from the multimedia file Extracts a thumbnail image in the thumbnail extraction target area based on the extraction target area information and controls to store the extracted thumbnail image as a representative thumbnail of the first folder in the storage unit, And a controller for controlling the display of the extracted thumbnail image by the representative thumbnail when the first folder is displayed,
Wherein the thumbnail extraction target area information is set using a progress bar for the multimedia file. 10. The method of claim 9,
Wherein,
The control unit controls the power supply to be turned on based on a power on signal from the IR module of the spatial remote controller and receives a signal including information on the operation of the spatial remote controller from the RF module of the spatial remote controller after the pairing with the spatial remote controller, Controls to display a pointer based on a signal including information on the operation of the spatial remote controller, controls to select the extracted thumbnail image using the pointer, and controls the selected thumbnail image When the first folder of the folder is displayed, the representative thumbnail is displayed. 10. The method of claim 9,
Wherein the display unit displays two or more thumbnail images when two or more thumbnail images are extracted from the thumbnail extraction target area,
Wherein the interface further receives a thumbnail selection signal for one of the at least two thumbnail images,
Wherein the storage unit stores the thumbnail image corresponding to the thumbnail selection signal as a representative thumbnail of the first folder. delete 10. The method of claim 9,
Wherein the control unit extracts an iframe in the thumbnail extraction target area to extract the thumbnail image. 14. The method of claim 13,
Wherein the storage unit stores information on the eye frame as header information of the multimedia file. 15. The method of claim 14,
Wherein the interface unit receives a thumbnail selection signal for one of the at least two child frames when the at least two eye frames exist in the thumbnail extraction target area,
Wherein the storage unit stores information on an eye frame corresponding to the thumbnail selection signal as header information of the multimedia file. 10. The method of claim 9,
Wherein the multimedia file is a moving image file.

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