KR20110081595A - Apparatus for displaying image and method for operating the same - Google Patents

Abstract

PURPOSE: An Image display device and an operation method thereof are provided for a user to intuitively confirm even files received from a plurality of external input devices or a connection-released external input device. CONSTITUTION: An image display device receives two or more input signals from an external input device connected to the image display device by wire/wireless(S620). The image display device creates two or more thumbnail images on the basis of the input signal(S630). The image display device stores the created thumbnail image. The image display device displays the stored thumbnail image(S640).

Description

Apparatus for displaying image and method for operating the same}

The present invention relates to a method of operating an image display device, and more particularly, to an image display device and an operation method of which a user can easily recognize files input from an external input device.

The image display device is a device having a function of displaying an image that a user can watch. In addition, the image display apparatus may 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 broadcasts transmit digital video and audio signals, and are more resistant to external noise than analog broadcasts, and thus have low data loss, are advantageous for error correction, provide high resolution, and provide a clear picture. In addition, with the implementation of digital broadcasting, interactive services have become possible.

Also, the image display device may receive a file to be played back from various external input devices. Previously, when one file is downloaded, the file is played on the entire screen, and it is difficult to check the download status of other files. In addition, there is a problem in that the files that are not currently being downloaded cannot be created to display or reproduce the thumbnail files because they cannot be newly created or displayed. Therefore, there is a need for a method for considering a user's convenience in selecting and playing a file received by an image display device or files already received.

Therefore, an object of the present invention, the user can easily identify and select the files received from the external input device, and the image to intuitively check the files received from a plurality of external input device or disconnected external input device A display device and an operation method thereof are provided.

According to an 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 to the image display device by wire or wirelessly; Generating at least one thumbnail image, storing the generated thumbnail image, and displaying the stored thumbnail image.

In addition, the image display device according to an embodiment of the present invention for achieving the above object, an external signal input unit for receiving two or more input signals from an external input device connected by wire, wireless, generated based on the two or more input signals A control unit for controlling to display two or more thumbnail images, a storage unit for storing the generated thumbnail image, and a display unit for displaying a screen including the thumbnail image.

According to the present invention, by generating and displaying a thumbnail image from an input signal received from an external input device, a user can easily select a file to play.

In addition, by storing the thumbnail image and the corresponding files, files downloaded in advance from the disconnected external input device may also be displayed as a thumbnail image for easy viewing.

Also, when there are files downloaded from a plurality of external input devices, thumbnail images of the files can be grasped at a glance.

Also, while the file is being downloaded, it can be shown to the user in real time by creating and displaying thumbnail images.

1 is a block diagram illustrating an image display apparatus according to an exemplary embodiment of the present invention.
FIG. 2 is an internal block diagram of the channel browsing processor of FIG. 1.
3A to 3B are diagrams illustrating an example of the remote control apparatus of FIG. 1.
4 is an internal block diagram of a user input / output unit of the interface unit of FIG. 1 and the spatial remote controller of FIG. 3.
5 is a diagram illustrating a situation in which a video display device receives a multimedia file from an external input device.
6 is a flowchart illustrating a method of operating an image display apparatus according to an exemplary embodiment of the present invention.
7 is a flowchart illustrating a method of operating an image display apparatus according to another exemplary embodiment.
8 and 9 illustrate screens displayed according to an operating method of an image display apparatus according to an exemplary embodiment of the present invention.

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

The suffixes "module" and "unit" for components used in the following description are merely given in consideration of ease of preparation of the present specification, and do not impart any particular meaning or role by themselves. Therefore, the "module" and "unit" may be used interchangeably.

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

Referring to FIG. 1, the image display device 100 according to an exemplary embodiment of the present invention may include a first tuner 120, a second tuner 125, an external signal input unit 128, a first demodulator 130, Second demodulation unit 135, analog / digital conversion unit 140, interface unit 150, control unit 160, channel browsing processing unit 170, storage unit 175, display 180, and sound output unit 185.

The first tuner 120 selects an RF broadcast signal corresponding to a channel selected by a user from among radio frequency (RF) broadcast signals received through an antenna, and converts the selected RF broadcast signal into an intermediate frequency signal or a baseband video / audio. Convert to a 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 digital broadcast signals and analog broadcast signals. The analog baseband video / audio signal CVBS 1 / SIF output from the first tuner 120 may be directly input to the controller 160.

Also, as described below, the first tuner 120 receives an RF broadcast signal of a single carrier according to an Advanced Television Systems Committee (ATSC) scheme or an RF broadcast signal of multiple carriers according to a digital video broadcasting (DVB) scheme. It is also possible.

Similar to the first tuner 120, the second tuner 125 selects an RF broadcast signal corresponding to a channel selected by a user from a radio frequency (RF) broadcast signal received through an antenna and selects the selected RF broadcast signal. Converts to an intermediate frequency signal or a baseband video / audio signal.

Meanwhile, the second tuner 125 sequentially and periodically selects corresponding RF broadcast signals of all stored broadcast channels through the channel memory function among the RF broadcast signals received through the antenna in the present invention, and the intermediate frequency signal. Alternatively, it can be converted to a baseband video / audio signal. In an embodiment of the present invention, since images of other pre-stored channels are also shown in thumbnail form on at least a portion of the display 180, it is possible to sequentially / periodically receive RF broadcast signals of all pre-stored channels.

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

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 an ATSC scheme, the first demodulator 130 performs 8-VSB (8-Vestigal Side Band) demodulation. In addition, the first demodulator 130 may perform channel decoding. To this end, the first demodulator 130 includes a trellis decoder, a de-interleaver, a reed solomon decoder, and the like. De-interleaving and Reed Soloman decoding may be performed.

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

The external signal input unit 128 performs signal input with an 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 input / output unit includes an Ethernet terminal, a USB terminal, a Composite Video Banking Sync (CVBS) terminal, a component terminal, and an S-video terminal for input / output of video / audio signals with an external input device. Analog (DVI), Digital Visual Interface (DVI) terminal, High Definition Multimedia Interface (HDMI) terminal, RGB terminal, D-SUB terminal, IEEE 1394 terminal, SPDIF terminal, Liquid HD terminal and the like.

The wireless communication unit may perform a wireless internet connection. For example, for wireless Internet access, a wireless local area network (WLAN) (Wi-Fi), a wireless broadband (Wibro), a world interoperability for microwave access (Wimax), a high speed downlink packet access (HSDPA), or the like may be used. .

In addition, the wireless communication unit may perform near field communication with other electronic devices. For example, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, etc. may 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 (Blu ray), a game machine, a camcorder, a computer (laptop), and the like, and an external input video signal, an external input audio signal, and The external input data signal is transmitted to the controller 160 in the image display apparatus 100 or to the channel browsing processor 170 as illustrated in FIG. 1. When the external signal input unit 128 transmits an external input signal received from the external input device to a thumbnail image generation / processing unit (not shown) in the channel browsing processor 170, a thumbnail image of the external input signal may be generated or processed. Will be.

That is, various input signals input through the external signal input unit 128 may be input to the channel browsing processor 170 to be described later to perform a thumbnail image extraction process. For example, an analog signal input through a wireless communication unit by a wireless connection between an A / V input / output unit such as a CVBS terminal and an S-video terminal or an external input device and an image display device may be a digital signal as described above. After the conversion, it may be inputted to the channel browsing processor 170. Digital signals input through other input terminals may be directly input to the channel browsing processor 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 multiplexed with an MPEG-2 standard video signal, a Dolby AC-3 standard audio signal, or the like. It may be (Transport Stream).

Thereafter, the thumbnail processed signal from the channel browsing processor 170 is transmitted to the controller 160. In addition, the video signal, the audio signal, and the data signal processed in the controller 160 may be output to another external input device.

Meanwhile, the external signal input unit 128 may be connected through at least one of the various set top boxes and 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, video, audio, and data signals processed by the set-top box for IPTV may be transmitted to the controller 160 to enable bidirectional communication. Signals processed by the controller 160 may be transferred to the set-top box for IPTV. Meanwhile, the video, audio, and data signals processed by the IPTV set-top box may be processed by the controller 160 via the channel browsing processor 170.

Meanwhile, the above-described IPTV may mean ADSL-TV, VDSL-TV, FTTH-TV, etc. according to the type of transmission network, and include TV over DSL, Video over DSL, TV overIP (TVIP), and Broadband TV ( 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 may perform demodulation and channel decoding and output a stream signal TS 1. In this case, the stream signal TS 1 may be a signal multiplexed with a video signal, an audio signal, and a data signal. For example, the stream signal TS 1 may be an MPEG-2 Transport Stream (TS) multiplexed with an MPEG-2 standard video signal, a Dolby AC-3 standard audio signal, and the like. In more detail, 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 controller 160 to perform demultiplexing, signal processing, and the like. In the exemplary embodiment of the present invention, the input is input to the channel browsing processing unit 170 before the input to the control unit 160 to perform a process for channel browsing. Channel browsing operations will be described later.

In addition, the above-described first demodulation unit 130 may be provided separately according to the ATSC method and the DVB method. That is, it can be provided as an ATSC demodulation unit and a DVB demodulation unit.

The second demodulator 135 receives the digital IF signal DIF 2 converted by the second tuner 125 to perform a demodulation operation, and outputs a stream signal TS 2. The operation of the second demodulator 135 is omitted with reference to the operation of the first demodulator 130.

On the other hand, when the signal output from the second tuner 125 is an analog baseband video signal CVBS 2, it is necessary to convert the analog / digital converter 140 into a digital signal.

The analog / digital converter 140 converts an input analog signal into a digital signal. When the input signal is an image signal, sampling and quantization may be performed and converted into a digital image signal DV. The converted digital signal may be an uncoded signal. The converted digital image signal DV is input to the channel browsing processor 170 and processed.

The interface unit 150 transmits an input signal from the user to the controller 160 or transmits a signal from the controller 160 to the user. For example, the interface unit 150 may power on / off, channel selection, screen setting, etc. from the remote control apparatus 200 according to various communication schemes such as RF (Radio Frequency) communication scheme and infrared (IR) communication scheme. Receives a user input signal, or transmits a signal from the control unit 160 to the remote control device 200.

The controller 160 may demultiplex the input stream and perform signal processing on the demultiplexed signals to generate and output signals for video and audio output. In addition, the overall operation of the image display apparatus 100 may be controlled.

Although not illustrated, the controller 160 may include a demultiplexer, an image processor, a voice processor, and a user input signal processor.

The controller 160 may demultiplex the input stream signal, for example, MPEG-2 TS, and divide the stream signal into a video signal, an audio signal, and a data signal, respectively.

In addition, the controller 160 may perform image processing of the demultiplexed image signal. For example, when the demultiplexed video signal is an encoded video signal, it may be decoded. Specifically, when the demultiplexed video signal is an encoded video signal of MPEG-2 standard, it may be decoded by an MPEG-2 decoder. In addition, when the demultiplexed video signal is a video signal of the H.264 standard according to the Digital Multimedia Broadcasting (DMB) scheme or DVB-H, it may be decoded by the H.264 decoder.

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

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

In addition, the controller 160 may perform 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 encoded speech signal of MPEG-2 standard, it may be decoded by an MPEG-2 decoder. In addition, when the demultiplexed speech signal is an encoded speech signal of MPEG 4 Bit Sliced Arithmetic Coding (BSAC) standard according to the terrestrial digital multimedia broadcasting (DMB) scheme, it may be decoded by an MPEG 4 decoder. In addition, when 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 may be decoded by the AAC decoder.

In addition, the controller 160 may process a base, a treble, a volume control, and the like.

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

In addition, the controller 160 may perform data processing of the demultiplexed data signal. For example, when the demultiplexed data signal is an encoded data signal, it may 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 in each channel. For example, the EPG information may be TSC-PSIP (ATSC-Program and System Information Protocol) information in the ATSC scheme, and may include DVB-Service Information (DVB-SI) in the DVB scheme. . The ATSC-PSIP information or the DVB-SI information may be information included in the aforementioned stream, that is, the header (4 bytes) of the MPEG-2 TS.

In addition, the controller 160 may perform an on screen display (OSD) process. Specifically, the controller 160 may graphically display various types of information on the display 180 based on at least one of an image processed image signal, a data processed data signal, and a user input signal from the remote controller 200. You can create a signal to display in either Graphic or Text. The generated signal may be input to the display 180 together with the image processed image signal and the data processed data signal.

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

The channel browsing processor 170 performs a browsing process on at least one of a broadcast signal corresponding to a received channel and various input image signals input through the external signal input unit 128. In detail, the demodulator 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 receives the analog / digital converter 140. Receiving the converted digital signal DV, demultiplexing the stream signal TS 1 or TS 2, extracting some of the demultiplexed video signals, and extracting a video signal including the extracted video signal. The new stream signal TSa may be output by multiplexing on the basis of the multiplexing. For example, the stream signal TSa or TSb may be MPEG 2 TS.

In addition, the channel browsing processor 170 may output the main stream signal TSb corresponding to the main video signal displayed in the main area among the video signals displayed on the display 180 without any additional processing, and displays the display ( The sub stream signal TSa corresponding to the sub video signal displayed in the sub region among the video signals displayed on 180 may be output by performing channel browsing processing as described above.

According to an exemplary embodiment of the present invention, when the channel list is displayed on the display 180 by extracting an image of a broadcast signal of a plurality of channels through the channel browsing processor 170 and re-coding the stream in a form of a stream, among the broadcast signals of the multiple channel. By converting at least a portion into a thumbnail image, a thumbnail list having a thumbnail image can be shown on the display 180. Accordingly, the user can intuitively know the contents broadcast in the other channel.

When the channel browsing processor 170 extracts some images of various external input images input through the external signal input unit 128 and re-encodes them in a stream form, the channel browsing processor 170 displays a plurality of external input lists on the display 180. At least a portion of an external input image from the external input device may be converted into a thumbnail image, and a thumbnail list including the thumbnail image may be displayed on the display 180. Accordingly, the user can intuitively know the content input from the external input device.

On the other hand, when the channel browsing processor 170 displays the channel list and the external input list on the display 180 by extracting the broadcast signal of the channel and the partial image of the above-described external input image and re-encapsulating them in a stream form. In addition, at least a part of a broadcast signal of a plurality of channels and an external input image from a plurality of external input devices may be converted into a thumbnail image, and a thumbnail list including the thumbnail image may be displayed 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 processor 170 will be described later with reference to FIG. 2.

The storage unit 175 may store a program for processing and controlling each signal in the controller 160, or may store a signal processed video signal, an audio signal, and a data signal.

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

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

The storage unit 175 may include a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), It may include at least one type of storage medium such as RAM, ROM (EEPROM, etc.).

In the drawing, the storage unit 175 is illustrated as being provided separately from the control unit 160, but is not limited thereto. The storage unit 175 may be included in the control unit 160.

On the other hand, the image display apparatus 100 may play back files (video files, still image files, music files, document files, etc.) stored in the storage unit 175 and provide them to the user.

The display 180 converts an image signal, a data signal, an OSD signal, or an image signal, data signal, etc. received from the external signal input unit 128 into R, G, and B signals, respectively, and is driven by the controller 160. Create The display 180 may be implemented in various forms such as a PDP, an LCD, an OLED, a flexible display, a 3D display, and the like. In addition, 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 controller 160, for example, a stereo signal, a 3.1 channel signal, or a 5.1 channel signal, and outputs a voice signal. The sound output unit 185 may be implemented by various types of speakers.

The remote control apparatus 200 transmits a 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.

In addition, the remote control apparatus 200 may receive a video signal, an audio signal, a data signal, etc. from the interface unit 150 and output the same.

Meanwhile, the remote control apparatus 200 according to the embodiment of the present invention may be a spatial remote controller. A description of the spatial remote controller will be provided later with reference to FIG. 3.

Meanwhile, according to an embodiment of the present invention, when the set top box connected to the external signal input unit 128 is a cable broadcasting set top box (not shown), a separate distributor (not shown) for processing of a scramble channel H), a broadcast signal input to the tuner 120 or 125 and a broadcast signal input to the set-top box may be separately separated.

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

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

Meanwhile, the descrambling of the scrambled channel may be processed in the set top box for cable broadcasting. That is, when a thumbnail image indicating the scrambled channel is selected from the thumbnail list displayed on the display, the controller 160 directly transmits the video, audio, and data signals of the descrambled channel in the cable broadcasting set-top box via the external signal input unit 128. Can be processed in 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 instead of the above-described cable broadcasting set-top box. This will be described later with reference to FIG. 2 and below.

Meanwhile, in the drawing, two tuners are shown to display a thumbnail list having a thumbnail image on the display 180 when viewing a channel list according to an embodiment of the present invention, but the present invention is not limited thereto. It is also possible to implement embodiments of the invention.

For example, when a broadcast signal of a selected channel is received through one tuner, and there is a channel list view command, the channel storage function sequentially and periodically receives corresponding broadcast signals of all previously stored broadcast channels. It is possible. According to this, the channel list view may be performed in full view.

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

On the other hand, the video display device described in the present specification is a TV receiver, a mobile phone, a smart phone (notebook computer), a digital broadcasting terminal, PDA (Personal Digital Assistants), PMP (Portable Multimedia Player), etc. Included.

FIG. 2 is an internal block diagram of the channel browsing processor of FIG. 1.

Referring to the drawings, the channel browsing processor 170 includes a switch 205, a demultiplexer 210, a picture decoder 215, a DV decoder 217, a format converter 220, and an image encoder 230. ), Stream encoder 240.

The switch 205 selects one of the plurality of input streams TS 1 and TS 2 and outputs it as it is (TSb) without a separate conversion operation to the main stream, and transfers the remaining streams to the demultiplexer 210. . The main stream corresponds to the main video signal, and the main video signal is displayed in most areas on the display 180. The other sub-streams transmitted to the demultiplexer 210 correspond to sub image signals other than the main channel, and the sub image signals may be displayed in some areas of the display 180.

This method may be performed in correspondence with the quick view function of the “video channel list” showing the channel list only in a part of the display 180 instead of the entire area of the display 180. Meanwhile, the simple view function may include an external input in addition to the channel list. This may be performed when the list is displayed on the display 180. Also, the list may be performed when the channel list and the external input list are displayed together on the display 180.

The demultiplexer 210 may demultiplex the received stream signal TS 1 or TS 2 and divide the stream signal TS 1 or TS 2 into a video signal, an audio signal, and a data signal, respectively. The video signal among the separated signals is transmitted to the picture decoder 215, and other audio and data signals may be transmitted to the stream encoder 240 to form a new stream.

The picture decoder 215 decodes at least a portion of the video signal which is demultiplexed and input. Decoding may 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 may decode an image of an I picture among the input video signals or may decode some sections of the input video signals.

The DV decoder 217 receives a digital signal DV converted by the analog / digital converter 140 to obtain a digital image.

The format converter 220 converts a format of a video signal input from the picture decoder 215 or the DV decoder 217 or an external input signal input from an external input device. For example, the magnitude (resolution) of the input video signal may be converted. This size conversion may vary according to the number of thumbnail images displayed on the display 180. In particular, when there is an input of changing the number of thumbnail images according to 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 thumbnail images displayed increases, the size of the corresponding thumbnail image decreases.

Meanwhile, the format converter 220 may convert the video signal into different sizes according to the simple view of the "video channel list" and the entire view of the "video channel list". For example, the size of the thumbnail image in the full view of the "image channel list" may be larger than the size of the thumbnail image in the simple view of the "image channel list". The above-described simple view and full view function may be performed even when the external input list is displayed on the display 180 in addition to the channel list. In addition, the channel list and the external input list may be displayed together on the display 180.

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

The stream encoder 230 encodes in a stream form based on the image encoded by the image encoder 230. That is, the video may be re-encoded based on an image encoded by the image encoder 230 and an audio signal and a data signal demultiplexed by the demultiplexer 210. Recoding may be performed in a multiplexed manner. The encoded stream form may be an MPEG 2 TS form.

In the exemplary embodiment of the present invention, the channel browsing processing unit 170 extracts and re-encodes at least some of the broadcast signals and the external input images of the plurality of channels, so as to “view the channel list” or “external input list”. At least a part of the plurality of channel broadcast signals and the external input images from the plurality of external input apparatuses may be converted into thumbnail images, and a thumbnail list having the thumbnail images may be displayed on the display 180. Accordingly, the user can intuitively know the content broadcast on another channel or the content input from the external input device.

Meanwhile, the descrambling process may be performed in the channel browsing processor 170 instead of the above-described cable broadcasting set-top box. For example, the TS switch 205 in the channel browsing processing unit 170 may generate a thumbnail image based on broadcast information of the scrambled channel when the image received through the tuner 120 or 125 is an image of the scrambled channel. The demultiplexer 210 transmits the corresponding stream. Accordingly, a thumbnail image of the scrambled channel is formed through the picture decoder 215, the format converter 220, the video encoder 230, and the stream encoder 240. The thumbnail image may include a scrambled icon in addition to broadcast information. The scrambled icon may be encoded using an icon preset in the image encoder 230.

On the other hand, when the thumbnail image of the scrambled channel is selected from the thumbnail list displayed on the display 180, the TS switch 205 in the channel browsing processing unit 170 does not transmit the input stream to the demultiplexer 210, Input to the descrambler (not shown) provided in the channel browsing processor 170. The descrambler (not shown) descrambles the broadcast signal of the scrambled channel to perform a descramble process to enable viewing. The descrambled stream Tsb is output and input to the controller 160. By such a configuration, the thumbnail image corresponding to the broadcast signal of the scrambled channel can be included in the thumbnail list and displayed, and when the thumbnail image representing the scrambled channel is selected, the user can easily watch the broadcast signal of the scrambled channel. Will be. On the other hand, the descramble processing unit (not shown) may be provided in the control unit 160.

3A to 3B are diagrams illustrating an example of the remote control apparatus of FIG. 1.

Referring to the drawings, the remote controller of FIG. 1 may be used as the remote controller 301.

The spatial remote controller 301 is one of the remote controllers 200 capable of inputting a command to the image display apparatus 100. In the present embodiment, the spatial remote controller 301 transmits and receives a signal with the image display device 100 according to the RF communication standard. As shown in FIG. 3A, a pointer 302 corresponding to the spatial remote controller 301 may be displayed on the image display apparatus 100.

The user may move or rotate the space remote controller 301 up, down, left, and right. The pointer 302 displayed on the image display apparatus 100 corresponds to the movement of the spatial remote controller 301. 3B illustrates a bar in which the pointer displayed on the image display apparatus 100 moves in response to the movement of the spatial remote controller 301.

As shown in FIG. 3A, when the user moves the spatial remote controller 301 to the left side, the pointer displayed on the image display apparatus 100 also moves to the left side correspondingly. In the present embodiment, the spatial remote controller 301 is provided with a sensor that can determine the movement. Information about the movement of the spatial remote controller 301 detected by 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 about the movement of the spatial remote controller 301 and calculates a 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 response to up, down, left, or right rotation of the spatial remote controller 301. The moving speed or the moving direction of the pointer 302 may correspond to the moving speed or the moving direction of the spatial remote controller 301.

In the present exemplary embodiment, the pointer displayed on the image display apparatus 100 is set to move in response to the operation of the spatial remote controller 301. As another example, a predetermined command may be input to the image display apparatus 100 in response to an operation of the spatial remote controller 301. That is, when moving back and forth of the spatial remote controller 301, the size of the image displayed on the image display apparatus 100 may be enlarged or reduced. Therefore, this embodiment does not 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.

Referring to the drawings, the spatial 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, and a control unit. 380 may include.

The wireless communication unit 320 transmits and receives a signal with the image display device 100. In the present exemplary embodiment, the spatial remote controller 301 may include an RF module 321 capable of transmitting and receiving a signal with the interface unit 310 of the image display apparatus 100 according to the RF communication standard. In addition, the spatial remote controller 301 may include an IR module 323 capable of transmitting and receiving a signal with the interface unit 310 of the image display apparatus 100 according to an IR communication standard.

In the present embodiment, the spatial remote controller 301 transmits a signal containing information about the operation of the spatial remote controller 301 to the image display apparatus 100 through the RF module 321. In addition, the spatial remote controller 301 may receive a signal transmitted from the image display apparatus 100 through the RF module 321. In addition, the spatial remote controller 301 may transmit a command regarding power on / off, channel change, volume change, etc. to the image display device 100 through the IR module 323 as necessary.

The user input unit 330 may be configured as a keypad or a button. The user may input a command related to the image display apparatus 100 to the spatial remote controller 301 by manipulating the user input unit 330. When the user input unit 330 includes a hard key button, the user may input a command related to the image display apparatus 100 to the spatial remote controller 301 through a push operation of the hard key button. When the user input unit 330 includes a touch screen, the user may input a command related to the image display apparatus 100 to the spatial remote controller 301 by touching a soft key of the touch screen. In addition, the user input unit 330 may include various kinds of input means that the user can operate, such as a scroll key or a jog key, and the present embodiment does not limit 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 may sense information about an operation of the spatial remote controller 301. For example, the gyro sensor 341 may sense information about an operation of the spatial remote controller 301 based on the x, y, and z axes. The acceleration sensor 341 may sense information about a moving speed of the spatial remote controller 301. The output unit 350 may output an image or audio signal corresponding to a manipulation or a signal transmitted from the image display apparatus 100 to the user input unit 330. The user may recognize whether the user input unit 330 is manipulated or whether the image display apparatus 100 is controlled through the output unit 350.

For example, the output unit 350 is an LED module 351 that is turned on when the user input unit 330 is manipulated or a signal is transmitted and received with the image display device 100 through the wireless communication unit 320, and a vibration module generating vibration. 353), an audio output module 355 for outputting audio or a display module 357 for outputting an image may be provided.

The power supply unit 360 supplies power to the space remote controller 301. The power supply unit 360 may reduce power waste by stopping power supply when the space remote controller 301 does not move for a predetermined time. The power supply unit 360 may resume power supply when a predetermined key included in the space remote controller 301 is operated.

The memory 370 may store various types of application data required for controlling or operating the spatial remote controller 301. If the spatial remote controller 301 transmits and receives a signal wirelessly through the image display apparatus 100 and the RF module 321, the spatial remote controller 301 and the image display apparatus 100 transmit and receive signals through a predetermined frequency band. . The controller 380 of the spatial remote controller 301 stores information on a frequency band or the like that can transmit and receive a signal wirelessly with the image display apparatus 100 paired with the spatial remote controller 301 in the memory 370. Reference may be made.

The controller 380 controls various items related to the control of the spatial remote controller 301. The controller 380 may receive a signal corresponding to a predetermined key operation of the user input unit 330 or a signal corresponding to an operation of the spatial remote controller 301 sensed by the sensor unit 340 through the wireless communication unit 320. It may be transmitted to the interface unit 310 of the 100.

The interface unit 310 of the image display apparatus 100 may determine a coordinate value of a pointer corresponding to the operation of the spatial remote controller 301 and the wireless communication unit 320 capable of transmitting and receiving a signal wirelessly with the spatial remote controller 301. A coordinate value calculator 315 that can be calculated may be provided.

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

The coordinate value calculator 315 may correct a hand shake or an error from a signal corresponding to an operation of the spatial remote controller 301 received through the wireless communication unit 320 to adjust the coordinate value of the pointer 302 to be displayed on the display 180. x, y) can be calculated.

In addition, the spatial remote controller 301 transmission signal input to the image display apparatus 100 through the interface unit 310 is transmitted to the controller 160 of the image display apparatus 100. The controller 160 may determine the information on the operation and the key operation of the spatial remote controller 301 from the signal transmitted from the spatial remote controller 301 and control the image display apparatus 100 correspondingly.

1 and 4 are block diagrams of the spatial remote controller 301 of the image display apparatus 100 and the remote control apparatus 200 according to an embodiment of the present invention. Each component of the block diagram may be integrated, added, or omitted according to the specifications of the image display apparatus 100 and the spatial remote controller 301 that are 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 situation in which a video display device receives a multimedia file from an external input device.

Referring to FIG. 5, the external input device is illustrated as a portable terminal. Photo files taken by the portable terminal or 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 that the files are transmitted from the external input device and the thumbnail images are generated.

In this case, the thumbnail image may be generated and displayed in the order in which the multimedia file is transmitted. In addition, since the thumbnail image is displayed in real time together with the transmission of the multimedia file, in this case, the user can know the state in which the multimedia file is being transmitted from the display state of the thumbnail image.

That is, since thumbnails are extracted and displayed in real time from a video or audio data downloaded from an external input device, the user can intuitively recognize which file is being downloaded. The stored thumbnail image may be stored so that the stored thumbnail image may be used for retrieval of the file even when the download is completed and the download is completed and the connection between the corresponding external input device and the image display device is released.

Therefore, the thumbnail images displayed on the display unit 180 may be thumbnail images of all files that are downloaded from an external input device that is currently connected or previously connected and stored in the image display device. The thumbnail images displayed here may be thumbnail images displayed at the same time as the file is downloaded and thumbnail images previously generated and stored. The thumbnail images may be displayed together in one screen in a predetermined order. Can be.

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

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

First, the image display device is connected to the external input device by wire or wirelessly (S610). For example, the video display device and the external input device may be connected through the wireless Internet, where the wireless Internet technologies include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), and HSDPA. (High Speed Downlink Packet Access) and the like can be used. In addition, the video display device and the external input device may be connected through short-range wireless communication, where short-range communication technologies include Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), and Ultra Wideband (UWB). , ZigBee and the like can be used.

In addition, when the video display device is wired to an external input device, the external input device includes the video display device, an Ethernet terminal, a USB terminal, a Composite Video Banking Sync (CVBS) terminal, a component terminal, and an S-video terminal (analog). It may be connected through a DVI (Digital Visual Interface) terminal, HDMI (High Definition Multimedia Interface) terminal, RGB terminal, D-SUB terminal, IEEE 1394 terminal, SPDIF terminal, 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 unit of the external signal input unit 128, and when the external input device is wired to the image display device, the external input device is externally connected. The A / V input / output unit of the signal input unit 128 is connected to transmit the multimedia file to the image display device.

When the image display device is connected to the external input device, the image display device receives an input signal from the external input device through the external signal input unit 128 to receive a multimedia file (S620). The multimedia file may include a still image file such as a picture or a picture, a video file, an audio file, a text file, and a file in which one or more of still image / video / audio / text are combined. The channel browsing processor 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 device.

In addition, the controller 160 sequentially outputs the image signal of the generated thumbnail image to the display unit 180. Under 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 proceeds until all of the multimedia files downloadable from the external input device are downloaded. Therefore, the controller 160 determines whether the download is completed or whether there are more multimedia files not downloaded to the external input device (S650). When the download is completed, the control unit 160 continues to generate and display a thumbnail image, and the download is completed. If not, it continues to receive an input signal and receive the remaining multimedia files.

The thumbnail images displayed here are thumbnail images corresponding to files created and stored simultaneously with downloading from an externally connected external input device, and files downloaded from an externally input device previously connected but currently disconnected. All thumbnail images may be included. Thumbnail images of files downloaded from an external input device that were previously connected but are now disconnected are displayed, indicating that thumbnail images created when downloading files from the corresponding external input device are not newly created each time. . Therefore, a storage space for storing the thumbnail image may be separately provided in the storage 175.

When downloading of the files is completed, the controller 160 receives a user signal through the interface unit 150 (S660). 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 a remote control device such as the spatial remote controller described above. When the controller 160 receives the user's selection signal through the interface unit 150, the controller 160 plays a multimedia file corresponding to the selection signal. Since the multimedia file may be a video or audio file as described above, the multimedia file is reproduced and output through the sound output unit 185 and / or the display 180 (S670).

7 is a flowchart illustrating a method of operating an image display apparatus according to another exemplary embodiment. In the exemplary embodiment described with reference to FIG. 7, a second image that is previously connected while generating and displaying a thumbnail image corresponding to a multimedia file by receiving an input signal from an external input apparatus currently connected to the image display apparatus A case where a multimedia file received from an external input device and stored therein and a thumbnail image generated and stored corresponding thereto are displayed together.

When the image display device is connected to the external input device through the external signal input unit (S710), the image display device receives the input signal and downloads the multimedia file (S720). Then, a thumbnail image of each multimedia file is generated based on the received input signal, and the display 180 displays the thumbnail images (S730). The generated thumbnail images are stored. In addition, a thumbnail image generated based on an input signal previously received from another external input device and previously stored in the storage unit 175 is also displayed (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 or download time of the external input device. The newly generated thumbnail image may be stored together in the storage unit 175 and other thumbnail images previously generated and stored, or may be stored in a separate space.

The controller 160 receives a 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 controller and the above-described remote controller may be input through a remote control device. Then, the controller 160 plays the multimedia file corresponding to the selected thumbnail image according to the input selection signal. The selected thumbnail image may correspond to a newly received multimedia file connected to an external input device or may be a thumbnail image previously generated and stored. The multimedia file is played through the display unit 180 and / or the sound output unit 185.

8 and 9 illustrate screens displayed according to an operating method of an image display apparatus according to an exemplary embodiment of the present invention.

Referring to the drawings, when an input signal is received from an external input device, as shown in FIG. 8 or 9, thumbnail images corresponding to multimedia files downloaded according to the reception of the input signal are displayed on the display 180. Is displayed. Each file or a folder to which the file belongs may be displayed as a thumbnail image. In this case, the upper portion of the display 180 may be displayed as “downloading in progress” or “downloading completion”. Meanwhile, in the drawing, the entire view function in which the thumbnail images are displayed over the entire area of the display 180 is performed, but the present invention is not limited thereto. Some of the thumbnail images of the entire thumbnail images may be displayed by list. It is also possible to display 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 thumbnail images are arranged according to a file format. The image file is included in the photo list 801, the audio file is included in the music list 803, and the video file is included in the movie list 805. The thumbnail images of the photo list 801, the thumbnail images of the music list 803, and the thumbnail images of the movie list 805 are separately displayed on the screen.

The thumbnail images shown in FIG. 8 are classified according to the type of the external input device, the file format, and the like. The thumbnail images are thumbnail images that are generated and displayed simultaneously with the files being downloaded, or previously downloaded files. The thumbnail images of all the files that can be played back may be displayed regardless of whether the thumbnail images are stored together with the files previously generated for the files.

That is, if the file is downloaded from an external input device that is currently connected, or if the file is disconnected after being connected previously but can be stored and played back in the video display device, or if it is a playable file, the corresponding thumbnail image is generated at the time of creation. It can be displayed in one screen regardless. It may be for this reason that the storage of the thumbnail image is performed together with the generation of the thumbnail image in the embodiment of the present invention. Accordingly, the user can grasp all the files that can be viewed or heard through the video display device at a glance through the list of thumbnail images and select the files.

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

As such, by displaying a screen including a plurality of thumbnail images on the display 180, the user may intuitively know files downloaded from a plurality of external input devices. Of course, all files that can be played back are shown as thumbnail images, regardless of the file download time or whether the external input device is connected, so that the user can grasp all the files currently being downloaded and files previously downloaded and stored in the video display device at once. . In addition, the displayed thumbnail image is also stored at the time of creation, and since the thumbnail image stored in the search for a file is used, the generation process of the thumbnail tomorrow does not need to be repeated many times. As a result, the operation of the video display device is simplified and user convenience is increased.

In the state where thumbnail images are displayed on the display 180, when there is a movement input of the cursor or the pointer, the cursor or the pointer moves according to a moving direction of up, down, left, and right. In addition, when there is a selection input after moving the cursor or the pointer, a selection signal for a thumbnail image corresponding to the position of the cursor or the pointer may be input. Meanwhile, the movement or selection of the cursor or the pointer may be performed by using a direction key of the remote controller, a selection key or an operation input or a selection input of the spatial remote controller.

When a selection signal for selecting one or more thumbnail images is received, the multimedia file corresponding to the selected thumbnail image is played. If the selected multimedia file is a video or video file, the corresponding multimedia file is displayed on the full screen instead of thumbnail images. Of course, since the selected multimedia file is displayed on a part of the screen, the thumbnail images and the multimedia file being played may be displayed in one screen. On the other hand, if the selected multimedia file is an audio file, thumbnail images may be maintained on the whole or part of the screen and the audio may be output through the sound output unit 185.

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 may 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 devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and also include a carrier wave such as transmission through the Internet. The processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.

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: interface unit
160: control unit
170: channel browsing processing unit
175: storage unit
180: display
200: remote control device

Claims (14)

Receiving two or more input signals from an external input device connected to the image display device in a wired or wireless manner;
Generating at least two thumbnail images based on the input signal;
Storing the generated thumbnail image; And
And displaying the stored thumbnail image. The method of claim 1,
And storing the generated thumbnail image in the order in which the input signal is received. 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 of claim 1,
And displaying at least two thumbnail images in the order in which the input signals corresponding to the thumbnail images are received. The method of claim 1,
Receiving a selection signal for selecting one or more of the thumbnail images; And
And reproducing an input signal corresponding to the thumbnail image selected by the selection signal. The method of claim 5,
And the input signal comprises at least one of a video signal, a still image signal, an audio signal, and a text signal. The method of claim 1,
And 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 by wire or wireless;
A controller configured to display at least two thumbnail images generated based on at least two input signals;
A storage unit for storing the generated thumbnail image; And
And a display unit which displays a screen including the thumbnail image. The method of claim 8,
The storage unit stores the thumbnail image in the order in which the input signal corresponding to the thumbnail image is received, and the controller displays the thumbnail image stored in the storage unit through the display unit. . The method of claim 8,
The storage unit stores the input signal and the thumbnail image even after the connection with the external input device is released, and the display generates a thumbnail image generated and stored based on the input signal received from the disconnected external input device. And an image display device including a screen. The method of claim 8,
And the controller lists the thumbnail images in the order in which the input signals corresponding to the thumbnail images are received. The method of claim 8,
An interface unit for receiving a selection signal for selecting one or more of the thumbnail image,
And the control unit reproduces an input signal corresponding to the thumbnail image selected by the selection signal. The method of claim 12,
And the input signal comprises at least one of a video signal, a still image signal, an audio signal, and a text signal. The method of claim 8,
And the thumbnail image is a still image or a moving image.

Images