KR101731390B1 - Apparatus for displaying image and method for operating the same - Google Patents

Abstract

The present invention relates to an image display apparatus and an operation method thereof. A method of operating an image display apparatus according to an exemplary embodiment of the present invention includes receiving at least two input signals from an external input apparatus connected to an image display apparatus and a wireless display apparatus and generating at least two thumbnail images based on the input signals Storing the generated thumbnail image, and displaying the stored thumbnail image. As a result, the user can easily grasp and select the files input from the external input device.

Description

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

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display apparatus, and more particularly, to an image display apparatus and a method of operating the same that can recognize files input from an external input apparatus.

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.

Also, the video display device can receive a file to be played back from various external input devices. In the past, there was an inconvenience that when one file was downloaded, the file was played on the entire screen and it was difficult to check the download status of other files. Also, for files that are not currently being downloaded, a thumbnail image can not be newly created or displayed, so that files that can be played back can not be displayed at a glance. Accordingly, there is a need for a method for the user to consider the convenience of the user in selecting and reproducing the file in which the image display apparatus receives the input or the files already input.

Accordingly, it is an object of the present invention to provide an image processing apparatus and method which can easily grasp and select files received from an external input apparatus, and can also intuitively identify files received from a plurality of external input apparatuses or disconnected external input apparatuses A display device and an operation method thereof.

According to another aspect of the present invention, there is provided a method of operating an image display device, the method comprising: receiving two or more input signals from an external input device connected with an image display device; Generating the thumbnail image, storing the generated thumbnail image, and displaying the stored thumbnail image.

According to another aspect of the present invention, there is provided an image display apparatus including an external signal input unit for receiving two or more input signals from an external input device connected with a wire or wireless connection, A control unit for controlling to display two or more thumbnail images, a storage unit for storing the generated thumbnail images, and a display unit for displaying a screen including the thumbnail images.

According to the present invention, a thumbnail image is generated from an input signal received from an external input device and displayed, so that a user can easily select a file to be reproduced.

In addition, by storing the thumbnail image and the corresponding files, files previously downloaded from the disconnected external input device can be easily displayed as a thumbnail image.

In addition, if there is a file downloaded from a plurality of external input devices, a thumbnail image of the files can be grasped at a glance.

Also, while the file is being downloaded, it can be displayed to the user in real time by generating and displaying the thumbnail image.

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 channel browsing 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 the user input / output unit of the interface unit of FIG. 1 and the spatial remote controller of FIG.
5 is a diagram illustrating a state in which a video display device receives a multimedia file from an external input device.
6 is a flowchart illustrating an operation method of an image display apparatus according to an embodiment of the present invention.
7 is a flowchart illustrating an operation method of an image display apparatus according to another embodiment of the present invention.
8 and 9 are views illustrating screens displayed according to 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.

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 first tuner 120, a second tuner 125, an external signal input unit 128, a first demodulation unit 130, The second demodulating unit 135, the analog / digital converting unit 140, the interface unit 150, the control unit 160, the channel browsing processing unit 170, the storage unit 175, the display 180, (Not shown).

The first tuner 120 selects an RF broadcast signal corresponding to a channel selected by a user from among RF (Radio Frequency) broadcast signals received through an antenna, converts the selected RF broadcast signal into an intermediate frequency signal or a baseband video / Signal. For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal DIF1, and if it is an analog broadcast signal, it is converted into an analog baseband video / audio signal CVBS 1 / SIF. That is, the first tuner 120 may be a hybrid tuner capable of processing a digital broadcast signal and an analog broadcast signal. The analog baseband video / audio signal (CVBS 1 / SIF) output from the first tuner 120 may be directly input to the controller 160.

The first tuner 120 receives an RF broadcast signal of a single carrier according to an ATSC (Advanced Television Systems Committee) method or an RF broadcast signal of a plurality of carriers according to a DVB (Digital Video Broadcasting) It is also possible.

Similarly to the first tuner 120, the second tuner 125 selects an RF broadcast signal corresponding to a channel selected by the user among RF (Radio Frequency) broadcast signals received through the antenna, Into an intermediate frequency signal or a baseband video / audio signal.

The second tuner 125 sequentially selects a corresponding RF broadcast signal of all broadcast channels previously stored through the channel memory function among the RF broadcast signals received through the antenna according to the present invention, Or to a baseband video / audio signal. In the embodiment of the present invention, images of other pre-stored channels are also displayed in a thumbnail form on at least a part of the display 180, so that it is possible to receive RF broadcast signals of all pre-stored channels sequentially / periodically.

For example, the first tuner 120 converts a main RF broadcast signal selected by the user into an intermediate frequency signal or a baseband video / audio signal, and the second tuner 125 converts all It is possible to sequentially and periodically select an RF broadcast signal (sub RF broadcast signal) or all RF broadcast signals and to convert it into an intermediate frequency signal or a baseband video / audio signal.

The first demodulator 130 receives the digital IF signal DIF 1 converted by the first tuner 120 and performs a demodulation operation.

For example, when the digital IF signal DIF 1 output from the first tuner 120 is of the ATSC scheme, the first demodulator 130 performs an 8-VSB (8-Vestigal Side Band) demodulation. Also, the first demodulator 130 may perform channel decoding. For this purpose, the first demodulator 130 includes a Trellis decoder, a de-interleaver, and a Reed Solomon decoder. The first demodulator 130 performs trellis decoding, Interleaving, de-interleaving, and reed solomon decoding.

For example, when the digital IF signal DIF 1 output from the first tuner 120 is a DVB scheme, the first demodulator 130 performs CODDMA (Coded Orthogonal Frequency Division Modulation) demodulation. Also, the first demodulator 130 may perform channel decoding. To this end, the first demodulator 130 may include a convolution decoder, a deinterleaver, and a reed-solomon decoder to perform convolutional decoding, deinterleaving, and reed solomon decoding.

The external signal input unit 128 performs signal input with the external input device. To this end, the external signal input unit 128 may include an A / V input / output unit (not shown) and a wireless communication unit (not shown).

The A / V I / O section has an Ethernet terminal, a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, and an S-video terminal (input terminal) for inputting / A digital video interface (DVI) terminal, a high definition multimedia interface (HDMI) terminal, an RGB terminal, a D-SUB terminal, an IEEE 1394 terminal, a SPDIF terminal, and a liquid HD terminal.

The wireless communication unit can perform a wireless Internet connection. For example, WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) .

Further, the wireless communication unit can perform short-range wireless communication with other electronic devices. For example, Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used.

The external signal input unit 128 is connected to an external input device such as a DVD (Digital Versatile Disk), a Blu ray, a game device, a camcorder, a computer And transfers the external input data signal to the controller 160 in the image display apparatus 100 or to the channel browsing processor 170 as shown in FIG. When the external signal input unit 128 transmits an external input signal received from the external input device to a thumbnail image generating / processing unit (not shown) in the channel browsing unit 170, a thumbnail image for the external input signal can be generated or processed .

That is, various input signals input through the external signal input unit 128 may be input to a channel browsing processing unit 170 to be described later, and a thumbnail image extracting process may be performed. For example, an analog signal input through the wireless communication unit by the wireless connection between the A / V input / output unit such as the CVBS terminal and the S-video terminal or the external input device and the image display device is converted into a digital signal And may be input to the channel browsing processing unit 170 after being converted. The digital signal inputted through other input terminals or the like can be directly inputted to the channel browsing processing unit 170 without analog / digital conversion. Here, the digital signal output from the external signal input unit 128 may be a stream signal. For example, an MPEG-2 TS (Digital Versatile Disc) (Transport Stream).

Thereafter, the thumbnail-processed signal in the channel browsing processor 170 is transmitted to the controller 160. Also, the video signal, audio signal, and data signal processed in the controller 160 can be output to another external input device.

Meanwhile, the external signal input unit 128 may be connected to the various set-top boxes through at least one of the various terminals described above to perform input / output operations with the set-top box.

For example, if the set-top box is a set-top box for an IP (Internet Protocol) TV, the video, audio, and data signals processed in the settop box for IPTV can be transmitted to the controller 160, The control unit 160 may transmit the processed signals to the IPTV set-top box. On the other hand, the video, audio, and data signals processed in the IPTV set-top box can be processed by the controller 160 via the channel browsing processor 170.

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 first demodulator 130 performs demodulation and channel decoding, and can output the stream signal TS 1. The stream signal TS 1 at this time may be a signal in which a video signal, an audio signal, and a data signal are multiplexed. For example, the stream signal TS 1 may be an MPEG-2 TS (Transport Stream) in which an MPEG-2 standard video signal, Dolby AC-3 standard audio signal, etc. are multiplexed. Specifically, the MPEG-2 TS may include a header of 4 bytes and a payload of 184 bytes.

The stream signal TS 1 is input to the control unit 160 to perform demultiplexing, signal processing, and the like. In the embodiment of the present invention, before input to the control unit 160, the channel browsing processing unit 170 inputs the channel browsing process. The channel browsing operation will be described later.

Meanwhile, the first demodulating unit 130 may be separately provided according to the ATSC scheme and the DVB scheme. That is, it can be provided as an ATSC demodulation unit and a DVB demodulation unit.

The second demodulation unit 135 receives the digital IF signal DIF 2 converted by the second tuner 125 and performs a demodulation operation and outputs the stream signal TS 2. The operation of the second demodulation unit 135 will be omitted with reference to the operation of the first demodulation unit 130 described above.

On the other hand, when the signal output from the second tuner 125 is the analog baseband video signal CVBS 2, the conversion from the analog / digital converter 140 to the digital signal is required.

The analog / digital conversion unit 140 converts the input analog signal into a digital signal. If the input signal is a video signal, sampling and quantization may be performed and converted into a digital video signal DV. The converted digital signal may be an uncoded signal. The converted digital video signal DV is input to the channel browsing processing unit 170 and processed.

The interface unit 150 transmits an input signal from the user to the control unit 160 or a signal from the control unit 160 to the user. For example, the interface unit 150 may be provided with various functions such as power on / off, channel selection, screen setting, etc. from the remote control device 200 in accordance with various communication methods such as an RF (Radio Frequency) Or may transmit a signal from the control unit 160 to the remote control apparatus 200. The remote control apparatus 200 may be connected to the remote control apparatus 200 via a network.

The control unit 160 demultiplexes the input stream and processes the demultiplexed signals to generate and output a signal for video and audio output. The overall operation of the video display device 100 can be controlled.

Although not shown in the figure, the control unit 160 may include a demultiplexing unit, a video processing unit, a voice processing unit, a user input signal processing unit, and the like.

The control unit 160 demultiplexes an input stream signal, for example, an MPEG-2 TS, into video signals, audio signals, and data signals, respectively.

Also, the control unit 160 can perform image processing of the demultiplexed video signal. For example, if the demultiplexed video signal is a coded video signal, it can be decoded. Specifically, when the demultiplexed video signal is an MPEG-2 standard-coded video signal, it can be decoded by an MPEG-2 decoder. Also, if the demultiplexed video signal is a video signal of the H.264 standard according to the DMB (Digital Multimedia Broadcasting) scheme or DVB-H, it can be decoded by the H.264 decoder.

In addition, the controller 160 may process the brightness, tint, and color of the video signal.

The image signal processed by the controller 160 is input to the display 180 and displayed. It is also possible to input to an external output terminal connected to the external output device.

Also, the control unit 160 can perform the voice processing of the demultiplexed voice signal. For example, if the demultiplexed speech signal is a coded speech signal, it can be decoded. Specifically, when the demultiplexed speech signal is an MPEG-2 standard encoded speech signal, it can be decoded by an MPEG-2 decoder. In addition, if the demultiplexed speech signal is a coded voice signal of the MPEG 4 BSAC (Bit Sliced Arithmetic Coding) standard according to a terrestrial DMB (Digital Multimedia Broadcasting) scheme, it can be decoded by an MPEG 4 decoder. Also, if the demultiplexed speech signal is an encoded audio signal of the AAC (Advanced Audio Codec) standard of MPEG 2 according to the satellite DMB scheme or DVB-H, it can be decoded by the AAC decoder.

In addition, the control unit 160 can process a base, a treble, a volume control, and the like.

The voice signal processed in the control unit 160 is input to the sound output unit 185, for example, a speaker and is output as a voice. It is also possible to input to an external output terminal connected to the external output device.

In addition, the control unit 160 can perform data processing of the demultiplexed data signal. For example, if the demultiplexed data signal is a coded data signal, it can be decoded. The encoded data signal may be EPG (Electronic Program Guide) information including broadcast information such as a start time and an end time of a broadcast program broadcasted on each channel. For example, the EPG information may be ATSC-PSIP (ATSC-Program and System Information Protocol) information in the case of the ATSC scheme and DVB-Service Information (DVB-SI) information in case of the DVB scheme . The ATSC-PSIP information or DVB-SI information may be information included in the above-described stream, i.e., the header (4 bytes) of the MPEG-2 TS.

In addition, the control unit 160 may perform an OSD (On Screen Display) process. Specifically, the control unit 160 displays various information on the display 180 based on at least one of the image-processed image signal and the data-processed data signal, and a user input signal from the remote control apparatus 200, (Graphic) or text (Text). The generated signal may be input to the display 180 together with the processed image signal and the processed data signal.

The signals generated for the graphic or text display described above may include various data such as a user interface screen of the image display apparatus 100, various menu screens, widgets, icons, and the like.

The channel browsing processing unit 170 performs browsing processing on at least one of a broadcast signal corresponding to the received channel and various input video signals inputted through the external signal input unit 128. Specifically, the demodulation unit 130 or 135 receives the demodulated and channel-decoded stream signal TS 1 or TS 2, receives the stream signal from the external signal input unit 128, or the analog-to-digital conversion unit 140 And demultiplexes the stream signal TS 1 or TS 2, extracts a part of the demultiplexed video signals, and outputs a video signal including the extracted video signal And can output a new stream signal TSa. For example, the stream signal TSa or TSb may be an MPEG 2 TS.

In addition, the channel browsing processing unit 170 can output the main stream signal TSb corresponding to the main video signal displayed in the main area of the display 180 without any processing, The sub-stream signal TSa corresponding to the sub-video signal displayed in the sub-area among the video signals displayed in the sub-area 180 may be output by performing the channel browsing process as described above.

In the embodiment of the present invention, when a channel list is displayed on the display 180 by extracting an image of a plurality of channels of broadcast signals through the channel browsing processor 170 and re-encoding them into a stream format, At least a portion of the thumbnail image is converted into a thumbnail image so that a thumbnail list having the thumbnail image can be displayed on the display 180. [ As a result, the user can intuitively know the content broadcast on the other channel.

The channel browsing processing unit 170 extracts a part of images of various external input images input through the external signal input unit 128 and re-encodes them into a stream form so that when displaying an external input list on the display 180, At least a part of the external input image from the external input device is converted into a thumbnail image and a thumbnail list having the thumbnail image can be displayed on the display 180. [ Accordingly, the user can intuitively know the contents input from the external input device.

On the other hand, when the channel browsing processor 170 extracts a broadcast signal of the channel and a partial image of the external input image described above and re-hatches the stream into a stream form, the channel browsing processor 170 displays the channel list and the external input list on the display 180 , A broadcast signal of a plurality of channels, and an external input image from a plurality of external input devices into a thumbnail image, thereby displaying a thumbnail list having a thumbnail image on the display 180. [ Accordingly, the user can intuitively know the contents input from the plurality of channels and the external input device.

The channel browsing processing unit 170 will be described later with reference to FIG.

The storage unit 175 may store a program for each signal processing and control in the control unit 160 or may store a video signal, a voice signal, and a data signal that have undergone signal processing.

In addition, the storage unit 175 may perform a function for temporarily storing video, audio, or data signals input from the external signal input unit 128.

In addition, the storage unit 175 may store the corresponding broadcast channel through the channel memory function.

The storage unit 175 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory) RAM, ROM (EEPROM, etc.), and the like.

Although the storage unit 175 is shown separately from the controller 160 in the drawing, the storage unit 175 is not limited thereto and may be included in the controller 160.

Meanwhile, the video display device 100 may reproduce and provide a file (a moving picture file, a still picture file, a music file, a document file, etc.) stored in the storage unit 175 to a user.

The display 180 converts an image signal, a data signal, an OSD signal processed by the control unit 160 or an image signal and a data signal received from the external signal input unit 128 into R, G, and B signals, respectively, . The display 180 can be implemented in various forms such as a PDP, an LCD, an OLED, a flexible display, and a 3D display. Also, the display 180 may be configured as a touch screen and used as an input device in addition to the output device.

The sound output unit 185 receives a signal processed by the control unit 160, 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.

The remote control device 200 transmits the user input to the interface unit 150. [ To this end, the remote control apparatus 200 can use Bluetooth, RF (radio frequency) communication, infrared (IR) communication, UWB (Ultra Wideband), ZigBee, or the like.

Further, the remote control apparatus 200 may receive a video signal, an audio signal, a data signal, and the like from the interface section 150 and output it.

Meanwhile, the remote controller 200 according to the embodiment of the present invention may be a space remote controller. The description of the spatial remote controller will be described later with reference to FIG. 3 and the following.

When the set-top box connected to the external signal input unit 128 is a cable set-top box (not shown), a separate distributor (not shown) for processing a scramble channel A broadcast signal input to the tuner 120 or 125 and a broadcast signal input to the set-top box may be separately separated.

At this time, the set-top box can be connected through the HDMI terminal of the external signal input unit 128. In such a case, the broadcast signal of the scrambled channel may be processed by the channel browsing processor 170 through the tuner 120 or 125 and converted into a thumbnail image.

At this time, the thumbnail image can not be based on the image of the broadcast signal due to the scrambled image, and may instead include at least one of broadcast information and scramble icons based on EPG (Electronic Program Guide) information, which is data information. Accordingly, the thumbnail image corresponding to the broadcast signal of the scrambled channel is also displayed in the thumbnail list, so that the user can easily select the channel.

On the other hand, the descrambling process of the scrambled channel can be processed in a set-top box for cable broadcasting. That is, when a thumbnail image indicating a scrambled channel is selected from the thumbnail list displayed on the display, the video, audio, and data signals of the descrambled channel in the set-top box for cable broadcasting are directly transmitted to the controller 160 via the external signal input unit 128, Lt; / RTI > As a result, the broadcast signal of the scrambled channel can be descrambled and displayed simply.

Meanwhile, the descrambling process may be performed in the channel browsing processor 170, not in the cable set-top box. This will be described later with reference to FIG.

In the meantime, although two tuners are shown in the drawing, a thumbnail list having a thumbnail image is displayed on the display 180 when viewing a channel list, which is an embodiment of the present invention. However, the present invention is not limited to this, It is also possible to implement embodiments of the present invention.

For example, if there is a channel list view command after receiving a broadcast signal of a selected channel through one tuner, the corresponding broadcast signals of all broadcast channels previously stored through the channel memory function are sequentially / periodically received It is possible. According to this, the channel list view can be performed as a whole view.

The video display apparatus 100 described above can be applied to a digital broadcasting of ATSC system (8-VSB system), digital broadcasting of DVB-T system (COFDM system), digital broadcasting of ISDB-T system (BST-OFDM system) (DMB) type digital broadcasting, ATSC-M / H type digital broadcasting, DVB-H (COFDM) digital broadcasting, A digital broadcasting receiver capable of receiving at least one of broadcasting, media flow-only (Digital Media), and the like. It may also be a digital broadcast receiver for cable, satellite communications, or IPTV.

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

2 is an internal block diagram of the channel browsing processing unit of FIG.

The channel browsing processing unit 170 includes a switch 205, a demultiplexing unit 210, a picture decoder 215, a DV decoder 217, a format conversion unit 220, a video encoder 230 ), And a stream encoder 240.

The switch 205 selects any one of the input streams TS 1 and TS 2 and outputs it as it is without conversion operation to the main stream TSb and transmits the remaining streams to the demultiplexer 210 . The main stream corresponds to the main video signal, and the main video signal is displayed on the display 180 in most areas. The sub stream transmitted to the other demultiplexer 210 corresponds to a sub video signal other than the main channel, and the sub video signal can be displayed in a partial area of the display 180.

This method can be performed in correspondence with the simple view function of the " video channel list "that shows only the channel list in a part of the display area 180, rather than the entire area of the display 180. Meanwhile, And displaying the list on the display 180. It is also possible to display the channel list and the external input list on the display 180 together.

The demultiplexer 210 demultiplexes the received stream signal TS 1 or TS 2 into a video signal, a voice signal and a data signal, respectively. The video signal of the separated signals is transmitted to the picture decoder 215, and the other audio and data signals can be transmitted to the stream encoder 240 for forming a new stream.

The picture decoder 215 decodes at least part of the demultiplexed video signal. Decoding can be performed by an MPEG 2, MPEG-4 or H.264 decoder or the like. The decoded image may be a still image or a moving image. For example, the picture decoder 215 can decode an image of an I picture among input image signals or decode a part of an input image signal.

The DV decoder 217 receives the digital signal DV converted by the analog / digital converter 140, and acquires a digital image.

The format conversion unit 220 converts the format of the video signal input from the picture decoder 215 or the DV decoder 217 or the format of the external input signal input from the external input device. For example, the size (resolution) of an input video signal can be converted. This size conversion may vary depending on the number of thumbnail images displayed on the display 180. [ In particular, when there is a thumbnail image number change input, which is an embodiment of the present invention, the size of the corresponding thumbnail image may vary according to the number of thumbnail images to be displayed. That is, as the number of displayed thumbnail images increases, the size of the corresponding thumbnail image decreases.

On the other hand, the format conversion unit 220 may convert image signals to different sizes according to the simple view of the "image channel list" and the entire view of the "image channel list ". For example, the size of the thumbnail image at the time of full viewing of the "video channel list" may be larger than the size of the thumbnail image at the time of the simple viewing of the "video channel list". The simple view and the full view function described above can also be performed when displaying an external input list on the display 180 in addition to the channel list. It can also be performed when displaying the channel list and the external input list together on the display 180. [

The video encoder 230 encodes the video signal converted by the format converter 220. [ For example, the format transforming unit 220 may encode the size-converted image into JPEG or MPEG-2. The still image or moving image encoded by the image encoder 230 is displayed as a thumbnail image in the thumbnail list on the display 180 in the future.

The stream encoder 230 encodes the image encoded by the image encoder 230 in a stream format. That is, the image can be re-encoded based on the image encoded by the image encoder 230 and the voice and data signals demultiplexed by the demultiplexer 210. [ The re-encoding may be performed in a multiplexing manner. The encoded stream format may be in the form of MPEG 2 TS.

In the embodiment of the present invention, at least some of the broadcast signals of the plurality of channels and the external input image are extracted and re-encoded through the channel browsing processing unit 170, At least some of the plurality of channel broadcast signals and the external input image from the plurality of external input devices can be converted into a thumbnail image and a thumbnail list having the thumbnail image can be displayed on the display 180. [ Accordingly, the user can intuitively know the content broadcasted on another channel or the content input on the external input device.

Meanwhile, the descrambling process may be performed in the channel browsing processor 170, not in the cable set-top box. For example, when the image received through the tuner 120 or 125 is a scrambled channel image, the TS switch 205 in the channel browsing processing unit 170 generates a thumbnail image based on the scramble channel broadcast information , And transmits the stream to the demultiplexing unit 210. Accordingly, a thumbnail image of a scrambled channel is formed through the picture decoder 215, the format conversion unit 220, the video encoder 230, and the stream encoder 240. Such a thumbnail image may include a scramble icon in addition to broadcast information. The scramble icon may be encoded using a predetermined icon in the image encoder 230. [

On the other hand, when a thumbnail image of a scramble channel among the thumbnail list displayed on the display 180 is selected, the TS switch 205 in the channel browsing processing unit 170 does not transmit the input stream to the demultiplexer 210, (Not shown) provided in the channel browsing processing unit 170. The descrambling processing unit (not shown) The descramble processing unit (not shown) performs descramble processing so as to decode the broadcast signal of the scrambled channel and to view it. The descrambled stream Tsb is output and input to the controller 160. [ With this configuration, the thumbnail image corresponding to the broadcast signal of the scrambled channel can be displayed in the thumbnail list, and when a thumbnail image representing the scrambled channel is selected, the user can easily view the broadcast signal of the scrambled channel . Meanwhile, the descramble processing unit (not shown) may be provided in the control unit 160.

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

Referring to the drawings, a spatial remote controller 301 can be used as the remote controller of FIG.

The space remote controller 301 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 301 transmits and receives signals in accordance with the RF communication standard with the image display apparatus 100. 3A, a pointer 302 corresponding to the spatial remote controller 301 may be displayed on the video display device 100. [

The user can move or rotate the space remote controller 301 up and down, left and right, and back and forth. The pointer 302 displayed on the video display device 100 corresponds to the motion of the spatial remote controller 301. [ FIG. 3B shows a bar displayed on the image display device 100 in response to the movement of the spatial remote controller 301. FIG.

As shown in FIG. 3A, when the user moves the spatial remote controller 301 to the left, the pointer displayed on the image display device 100 also moves to the left corresponding thereto. In the present embodiment, the spatial remote controller 301 has a sensor capable of discriminating a motion. Information about the motion of the spatial remote controller 301 sensed through the sensor of the spatial remote controller 301 is transmitted to the image display apparatus 100. [ The image display apparatus 100 determines the operation of the spatial remote controller 301 from the information on the motion of the spatial remote controller 301 and calculates the coordinate value of the pointer 302 corresponding thereto.

3A and 3B illustrate an example in which the pointer 302 displayed on the display 180 moves in correspondence with the up, down, left, right, or rotation of the spatial remote controller 301. Fig. The moving speed and the moving direction of the pointer 302 may correspond to the moving speed and moving direction of the spatial remote controller 301. [

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 301. [ As another example, it is possible to set a predetermined command to be inputted to the image display apparatus 100 in response to the operation of the spatial remote controller 301. That is, when moving the remote controller 301 back and forth, the size of the image displayed on the image display device 100 can 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 the interface unit of FIG. 1 and the spatial remote controller of FIG. 3;

The space remote controller 301 includes a wireless communication unit 320, a user input unit 330, a sensor unit 340, an output unit 350, a power supply unit 360, a memory 370, Lt; RTI ID = 0.0 > 380 < / RTI >

The wireless communication unit 320 transmits and receives signals to and from the image display apparatus 100. The spatial remote controller 301 may include an RF module 321 capable of transmitting and receiving signals to and from the interface unit 310 of the image display apparatus 100 according to the RF communication standard. The spatial remote controller 301 may include an IR module 323 capable of transmitting and receiving signals to and from the interface unit 310 of the image display apparatus 100 according to the IR communication standard.

In this embodiment, the spatial remote controller 301 transmits a signal containing information on the operation of the spatial remote controller 301 to the image display device 100 through the RF module 321. [ In addition, the spatial remote controller 301 can receive the signal transmitted by the image display apparatus 100 through the RF module 321. The spatial remote controller 301 can transmit commands to the video display device 100 via the IR module 323, such as power on / off, channel change, volume change, and the like, as needed.

The user input unit 330 may include a keypad or a button. The user can input a command related to the image display apparatus 100 to the spatial remote controller 301 by operating the user input unit 330. [ When the user input unit 330 includes a hard key button, the user can input a command related to the image display apparatus 100 to the spatial remote controller 301 through the push operation of the hard key button. When the user input unit 330 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 301. [ In addition, the user input unit 330 may include various types of input means such as a scroll key, a jog key, etc., which can be operated by the user, and the present invention is not limited to the scope of the present invention.

The sensor unit 340 may include a gyro sensor 341 or an acceleration sensor 343. The gyro sensor 341 can sense information on the operation of the spatial remote controller 301. [ For example, the gyro sensor 341 can sense information about the operation of the spatial remote controller 301 on the basis of the x, y, and z axes. The acceleration sensor 341 can sense information on the moving speed of the spatial remote controller 301 and the like. The output unit 350 may output a video or audio signal corresponding to an operation to the user input unit 330 or a signal transmitted from the video display device 100. [ The user can recognize whether the user input unit 330 is operated or whether the image display apparatus 100 is controlled through the output unit 350.

For example, the output unit 350 includes an LED module 351 that is turned on when the user input unit 330 is operated or a signal is transmitted and received between the image display device 100 and the image display apparatus 100 through the wireless communication unit 320, 353, an audio output module 355 for outputting sound, or a display module 357 for outputting an image.

The power supply unit 360 supplies power to the space remote controller 301. The power supply unit 360 can reduce power waste by interrupting the power supply when the spatial remote controller 301 has not moved for a predetermined time. The power supply unit 360 can resume power supply when a predetermined key provided in the space remote controller 301 is operated.

The memory 370 may store various types of application data or the like necessary for the control or operation of the spatial remote controller 301. If the spatial remote controller 301 wirelessly transmits / receives a signal through the image display device 100 and the RF module 321, the spatial remote controller 301 and the image display device 100 transmit / receive signals through a predetermined frequency band . The control unit 380 of the spatial remote controller 301 stores information on the frequency band and the like capable of wirelessly transmitting and receiving signals to and from the video display device 100 paired with the spatial remote controller 301 in the memory 370 Can be referenced.

The control unit 380 controls various matters related to the control of the spatial remote controller 301. The control unit 380 transmits a signal corresponding to a predetermined key operation of the user input unit 330 or a signal corresponding to the operation of the spatial remote controller 301 sensed by the sensor unit 340 through the wireless communication unit 320 100 to the interface unit 310 of FIG.

The interface unit 310 of the image display apparatus 100 includes a wireless communication unit 320 capable of wirelessly transmitting and receiving a signal to and from the spatial remote controller 301 and a wireless communication unit 320 capable of transmitting and receiving the coordinate values of the pointer corresponding to the operation of the spatial remote controller 301 And a coordinate value calculation unit 315 that can calculate the coordinate value.

The wireless communication unit 320 can transmit and receive signals wirelessly with the spatial remote controller 301 through the RF module 321. Further, the spatial remote controller 301 can receive a signal transmitted through the RF module 323 according to the IR communication standard.

The coordinate value calculator 315 corrects the camera shake or the error from the signal corresponding to the operation of the spatial remote controller 301 received via the wireless communication unit 320 and outputs the coordinate value of the pointer 302 to be displayed on the display 180 x, y) can be calculated.

The transmission signal of the spatial remote controller 301 inputted to the image display apparatus 100 through the interface unit 310 is transmitted to the controller 160 of the image display apparatus 100. The control unit 160 can determine the information about the operation of the spatial remote controller 301 and the key operation from the signal transmitted from the spatial remote controller 301 and control the image display apparatus 100 accordingly.

A block diagram of the spatial remote controller 301 among the image display apparatus 100 and the remote controller 200 shown in FIGS. 1 and 4 is a block diagram for an embodiment of the present invention. Each component of the block diagram can be integrated, added, or omitted according to specifications of the video display device 100 and the spatial remote controller 301 actually implemented. That is, two or more constituent elements may be combined into one constituent element, or one constituent element may be constituted by two or more constituent elements, if necessary. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and apparatuses do not limit the scope of the present invention.

5 is a diagram illustrating a state in which a video display device receives a multimedia file from an external input device.

Referring to FIG. 5, the external input device is exemplified as a portable terminal. Picture files photographed by the portable terminal and music files stored in the portable terminal are transmitted to the image display device. The thumbnail image extracted from the multimedia file transmitted from the external input device is displayed on the display of the image display device. The thumbnail images are stored in the storage unit 175 of the image display device in the order in which the files are transmitted from the external input device and the thumbnail images are generated.

At this time, the thumbnail images can be generated and displayed in the order in which the multimedia files are transmitted. Also, since the thumbnail image is displayed in real time together with the transmission of the multimedia file, the user can know the progress of transmission of the multimedia file from the display state of the thumbnail image.

That is, the image or audio data downloaded from the external input device is extracted and displayed in a thumbnail in real time, so that the user can intuitively recognize which file is currently being downloaded. Then, the generated thumbnail image is stored, and then a thumbnail image stored for retrieving the file can be used in a state other than the downloading state, i.e., in a state where the download is completed and the connection between the external input apparatus and the image display apparatus is released.

Accordingly, the thumbnail image displayed on the display unit 180 may be thumbnail images of all the files stored in the image display apparatus, which are currently connected or downloaded from an external input apparatus that has been connected in the past. The thumbnail image displayed here may be a thumbnail image displayed at the same time as the file is downloaded, and thumbnail images previously stored and stored after the file is downloaded. These thumbnail images may be displayed together in one screen in a predetermined order .

When the thumbnail images are displayed on the display unit 180, the user inputs a selection signal for selecting at least one thumbnail image using a remote controller or a remote control device such as the above-described spatial remote controller. Then, the multimedia file corresponding to the selected thumbnail image according to the selection signal can be displayed or reproduced through the entire screen.

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

First, the video display device is connected to the external input device wirelessly (S610). For example, the video display device and the external input device can be connected through a wireless Internet. Here, the wireless Internet technology includes a wireless LAN (WLAN) (Wi-Fi), a Wibro (wireless broadband), a Wimax (World Interoperability for Microwave Access) (High Speed Downlink Packet Access) or the like can be used. In addition, the image display apparatus and the external input apparatus can be connected through short-range wireless communication. Here, Bluetooth, RFID, IrDA, Ultra Wideband (UWB) , ZigBee, etc. may be used.

In addition, when the video display device is wired to an external input device, the external input device includes an image display device, an Ethernet terminal, a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, an S- , A DVI (Digital Visual Interface) terminal, an HDMI (High Definition Multimedia Interface) terminal, an RGB terminal, a D-SUB terminal, an IEEE 1394 terminal, a SPDIF terminal, and a Liquid HD terminal.

That is, when the external input device is wirelessly connected to the image display device, the external input device is connected through the wireless communication part of the external signal input part 128. When the external input device is connected with the video display device by wire, Output unit of the signal input unit 128 and transmits the multimedia file to the video display device.

When the image display apparatus is connected to the external input apparatus, the image display apparatus receives the input signal from the external input apparatus through the external signal input unit 128 and receives the multimedia file (S620). The multimedia file may include a still image file such as a picture or a picture, a moving picture file, a voice file, a text file, and a file in which one or more of still image / video / voice / text are combined. The channel browsing processing unit 170 generates a thumbnail image corresponding to each multimedia file based on the input signal (S630). The generated thumbnail image is stored in the storage unit 175 of the image display apparatus.

The control unit 160 sequentially outputs the generated thumbnail video signal to the display unit 180. In accordance with the control of the controller 160, the display unit 180 sequentially displays two or more thumbnail images (S640). The generation and display of the thumbnail image are performed until all the downloadable multimedia files from the external input device are downloaded. Accordingly, the control unit 160 determines whether downloading is completed or whether a multimedia file that has not been downloaded is present in the external input device (S650). If downloading is completed, the control unit 160 causes the thumbnail image to continue to be generated and displayed. If not, the still input signal is received and the remaining multimedia file is input.

The thumbnail image displayed here is composed of thumbnail images corresponding to the files generated and stored at the same time as the download from the currently connected external input device and thumbnail images corresponding to the files downloaded from the external input device Thumbnail images can all be included. A thumbnail image of files downloaded from an external input device which has been previously connected but is disconnected at present is not newly generated each time but a thumbnail image generated when downloading files from the external input device is stored and displayed . Therefore, a storage space for storing the thumbnail image may be separately provided in the storage unit 175. [

When downloading of the files is completed, the control unit 160 receives the user signal through the interface unit 150 (S660). Here, the input user signal may be a selection signal for selecting one or more thumbnail images. The selection signal may be input through the interface unit 150 from the remote control device such as the above-described space remote controller. When the control unit 160 receives the user's selection signal through the interface unit 150, the multimedia file corresponding to the selection signal is reproduced. Since the multimedia file may be a video or audio file as described above, it is reproduced and output through the audio output unit 185 and / or the display 180 (S670).

7 is a flowchart 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. 7, a thumbnail image corresponding to a multimedia file is generated and displayed by receiving an input signal from an external input device currently connected to the image display device, and a second A description will be made of a case where a multimedia file received from an external input device and stored and a thumbnail image generated and stored corresponding thereto are displayed together.

When the connection to the external input device is established through the external signal input unit (S710), the video display device receives the input signal and downloads the multimedia file (S720). Then, a thumbnail image for each multimedia file is generated based on the received input signal, and the display 180 displays thumbnail images (S730). The generated thumbnail images are stored. At the same time, a thumbnail image pre-stored in the storage unit 175 is displayed together with the input signal previously received from another external input device (S740). The newly generated thumbnail image and the previously stored thumbnail image may be displayed on the same screen or may be separately displayed for each list classified according to the type of the external input device and the downloading point. The newly generated thumbnail image may be stored together with other thumbnail images already stored in the storage unit 175, or may be stored in a separate space.

The control unit 160 receives the user signal through the interface unit 150 (S750). Here, the user signal means a selection signal for selecting one or more thumbnail images, and the space remote controller described above can be input through a remote control device. Then, the control unit 160 reproduces the multimedia file corresponding to the selected thumbnail image according to the received selection signal. The selected thumbnail image may be associated with an external input device and correspond to a newly received multimedia file, or may be a previously generated and stored thumbnail image. The multimedia file is reproduced through the display unit 180 and / or the sound output unit 185.

8 and 9 are views illustrating screens displayed according to an operation method of an image display apparatus according to an embodiment of the present invention.

Referring to FIG. 8, when an input signal is received from an external input device, thumbnail images corresponding to multimedia files downloaded according to reception of an input signal as shown in FIG. 8 or 9 are displayed on a display 180 Is displayed. Each file or folder to which the file belongs can be displayed as a thumbnail image. At this time, "download in progress" or "download completed" may be displayed on the upper part of the display 180. In the drawing, the thumbnail image is displayed over the entire area of the display 180. However, the present invention is not limited to this, and some of the thumbnail images may be displayed on the display 180 It may be displayed in some areas.

The list of thumbnail images may be classified according to the type of the external input device, the download date, or the file format. 8 shows an example in which the thumbnail images are sorted according to the file format. The image file is included in the picture list 801, the voice file is included in the music list 803, and the moving picture file is included in the movie list 805. Thumbnail images of the photo list 801, thumbnail images of the music list 803, and thumbnail images of the movie list 805 are separately displayed on the screen.

The thumbnail images shown in FIG. 8 are divided and displayed according to the type of the external input device, the format of the file, and the like. However, the thumbnail images may be a thumbnail image generated at the same time as the thumbnail images are generated for the files currently being downloaded, Thumbnail images of all playable files can be displayed together regardless of whether they are thumbnail images stored together with previously generated files.

That is, a file downloaded from the currently connected external input device, or a file that can be reproduced, if the file is currently stored in the image display device after the connection is disconnected, the thumbnail image corresponding to the file can be reproduced So that it can be displayed in one screen irrespective of the display. In this embodiment of the present invention, the thumbnail image may be generated and the thumbnail image may be stored for this reason. Accordingly, the user can grasp all the files that can be viewed or heard through the current image display device at a glance through a list of thumbnail images, and can select a file.

9 shows that the thumbnail images are divided and displayed according to the type of external input device. If there are two or more external input devices connected to or connected to the video display device, each of the external input devices may be referred to as a first external input device, a second external input device, or the like. Here, the first external input device and the second external input device may be connected to the video display device at the same time, or only one of them may be connected, or both may be connected to disconnect the multimedia file after being connected. The multimedia file and the thumbnail image of the disconnected external input device are stored in the storage unit 175 and then displayed.

Thus, by displaying a screen including a plurality of thumbnail images on the display 180, the user can intuitively know files downloaded from a plurality of external input devices. Of course, all playable files are displayed as thumbnail images irrespective of the download time of the file or the connection of the external input device, so that the user can grasp the files currently being downloaded and the files previously downloaded and stored in the image display device at once . Also, the thumbnail image to be displayed is also stored at the time of creation, and since the thumbnail image stored in the search of the file is used, the thumbnail creation process does not need to be repeated several times. As a result, the operation of the video display device is simplified and the user convenience is increased.

Meanwhile, when thumbnail images are displayed on the display 180, when a cursor or a pointer is moved, the cursor or the pointer moves according to the moving direction of the up, down, left, and right. If there is a selection input after moving the cursor or the pointer, a selection signal for the thumbnail image corresponding to the position of the cursor or the pointer may be input. On the other hand, the movement or selection of the cursor or the pointer can be performed by the direction key of the remote controller, the operation key of the selection key or the spatial remote controller, and the selection input.

Upon receiving the selection signal for selecting one or more thumbnail images, the multimedia file corresponding to the selected thumbnail image is reproduced. If the selected multimedia file is an image or a moving image file, the corresponding multimedia file is displayed on the entire screen instead of the thumbnail images. Of course, the selected multimedia file is displayed on a part of the screen, so that the thumbnail images and the multimedia file being reproduced may be displayed in one screen. On the other hand, if the selected multimedia file is a voice file, the thumbnail images may remain on the whole or part of the screen and the voice may be outputted through the sound output unit 185.

Meanwhile, the thumbnail image may be a still image or a moving image.

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 network-connected computer systems so that code readable by the processor in a distributed fashion can be stored and executed.

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

100: Video display device
120: first tuner
125: Second tuner
128: External input device
150:
160:
170: Channel browsing processor
175:
180: Display
200: remote control device

Claims (14)

A method of operating a video display device controlled by a remote control device,
The method comprising: receiving two or more input signals from an external input device connected to a video display device in a wireless manner;
Generating two or more thumbnail images based on the input signal;
Storing the generated thumbnail image;
Displaying the stored thumbnail image;
Receiving a selection signal for selecting at least one of the thumbnail images; And
And reproducing an input signal corresponding to the thumbnail image selected by the selection signal,
The selection signal,
A remote control device,
Wherein when the thumbnail image is displayed, the thumbnail image is divided and displayed according to the type of the external input device,
Information about movement is received from the remote control device through an RF module, a coordinate value of the pointer is calculated based on the information on the movement, a pointer is displayed based on the calculated coordinate value,
The information on the motion may be,
Information about the operation of the remote control device sensed on the basis of the x, y, and z axes from the gyro sensor in the remote control device and information about the movement speed of the remote control device sensed from the acceleration sensor in the remote control device Based on the information,
Wherein the thumbnail image display step comprises:
A thumbnail image based on an input signal from the first external input device and a thumbnail image based on an input signal from the second external input device are separately displayed,
A thumbnail image based on an input signal from the first external input device corresponds to a previously stored thumbnail image,
And a thumbnail image based on an input signal from the second external input device corresponds to a thumbnail image generated based on a file currently being downloaded. The method according to claim 1,
And storing the generated thumbnail images according to the order in which the input signals are received. 3. The method of claim 2,
And displaying the thumbnail images in the order in which the input signals corresponding to the thumbnail images are received. The method according to claim 1,
And arranging at least two thumbnail images according to the order in which the input signals corresponding to the thumbnail images are received. delete The method according to claim 1,
Wherein the input signal comprises at least one of a moving image signal, a still image signal, a voice signal, and a text signal. The method according to claim 1,
Wherein the thumbnail image is a still image or a moving image. An external signal input unit for receiving two or more input signals from an external input device connected wirelessly or wirelessly;
A control unit for controlling to display two or more thumbnail images generated based on at least two input signals;
A storage unit for storing the generated thumbnail image; And
A display unit for displaying a screen including the thumbnail image;
And an interface unit receiving a selection signal for selecting at least one of the thumbnail images,
Wherein the control unit reproduces an input signal corresponding to the thumbnail image selected by the selection signal,
The selection signal,
Receiving from the remote control device,
Wherein when the thumbnail image is displayed, the thumbnail image is divided and displayed according to the type of the external input device,
Information about movement is received from the remote control device through the RF module in the interface unit, a coordinate value of the pointer is calculated based on the information about the movement, a pointer is displayed based on the calculated coordinate value,
The information on the motion may be,
Information about the operation of the remote control device sensed on the basis of the x, y, and z axes from the gyro sensor in the remote control device and information about the movement speed of the remote control device sensed from the acceleration sensor in the remote control device Based on the information,
Wherein,
Upon displaying the thumbnail image,
A thumbnail image based on an input signal from a first external input device and a thumbnail image based on an input signal from a second external input device are separately displayed,
A thumbnail image based on an input signal from the first external input device corresponds to a previously stored thumbnail image,
Wherein the thumbnail image based on an input signal from the second external input device corresponds to a thumbnail image generated based on a file currently being downloaded. 9. The method of claim 8,
Wherein the storage unit stores the thumbnail image according to the order in which the input signal corresponding to the thumbnail image is received, and the control unit displays the thumbnail image stored in the storage unit through the display unit. . 9. The method of claim 8,
The storage unit stores the input signal and the thumbnail image even after the connection with the external input apparatus is released. The display unit displays the thumbnail image generated and stored based on the input signal received from the disconnected external input apparatus And displays a screen including the image. 9. The method of claim 8,
Wherein the control unit arranges the thumbnail images according to the order in which the input signals corresponding to the thumbnail images are received. delete 9. The method of claim 8,
Wherein the input signal includes at least one of a moving picture signal, a still picture signal, a voice signal, and a text signal. 9. The method of claim 8,
Wherein the thumbnail image is a still image or a moving image.

Images