KR101645188B1 - 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 generating a thumbnail image based on a broadcast signal of a received channel, classifying the generated thumbnail image into a predetermined folder and storing the thumbnail image, And displaying a first thumbnail list having a thumbnail image belonging to the selected folder on the display when the folder view input of the list exists. Accordingly, it is possible to improve the usability of the user when viewing the video channel list.

Image, display, thumbnail, folder

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 an operation method thereof that can improve a user's usability.

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

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

In such a digital broadcasting environment, various measures are being taken to increase the convenience of users.

Therefore, an object of the present invention is to provide a video display device and an operation method thereof that can improve the usability of the user.

According to another aspect of the present invention, there is provided a method of operating a video display device including generating a thumbnail image based on a broadcast signal of a received channel, classifying the generated thumbnail image into a preset folder, And displaying a first thumbnail list having a thumbnail image belonging to the selected folder on the display when there is a folder view input of the video channel list.

According to another aspect of the present invention, there is provided an image display apparatus including a display, a tuner for receiving a broadcast signal of a predetermined channel, and a display unit for displaying the generated thumbnail image on the basis of a broadcast signal of the received channel. And a controller for controlling the display of the first thumbnail list including the thumbnail images belonging to the selected folder when the folder view input of the image channel list is present.

According to the embodiment of the present invention, when a folder of a video channel list is viewed, a thumbnail image classified and stored according to the folder is displayed, so that it can be provided according to a user's taste. Therefore, the usability of the user is improved.

In addition, when the entire image is viewed, the selected thumbnail image can be added to a specific folder, or when the folder is viewed, the selected thumbnail image can be deleted from the folder. Thus, the folder configuration can be easily performed.

On the other hand, since the search function is supported in the video channel list, only the thumbnail video corresponding to the channel desired by the user can be separately displayed, thereby improving the usability of the user.

In addition, since various operations such as selection, editing, and sorting can be performed while the thumbnail list is displayed, the user's convenience of use is improved.

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 embodiment of the present invention includes a first tuner 120, a second tuner 125, an external signal input / output unit 128, a first demodulation unit 130, A second demodulating unit 135, an analog / digital converting unit 140, an interface unit 150, a control unit 160, a channel browsing processing unit 170, a storage unit 175, a display 180, And the like.

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. In addition, it is also possible to receive RF broadcast signals mixed with a single carrier system and a plurality of carrier systems according to DTMB (Digital Terrestrial Multimedia Broadcast) system.

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.

Meanwhile, the second tuner 125 sequentially / periodically 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, Signal or a baseband video / audio signal.

In the embodiment of the present invention, the thumbnail list including thumbnail images corresponding to images of other previously stored channels is displayed on at least a part of the display 180, so that the second tuner 125 can display Separately, it is possible to sequentially receive RF broadcast signals of all pre-stored channels.

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

The external signal input / output unit 128 is connected to an external device such as a DVD (Digital Versatile Disk), a Blu ray, a game device, a camcorder, a computer And transmits the external input data signal to the controller 160 in the image display apparatus 100. Also, the video signal, audio signal, and data signal processed in the controller 160 can be output to an external device.

The A / V I / O section has Ethernet, USB, Composite Video Banking Sync (CVBS), component, S-Video (analog) connectors for input and output of video / , 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.

The analog signal input through the CVBS terminal, the S-video terminal, or the like can be converted into a digital signal through the analog / digital conversion unit 140. The digital signal input through other input terminals can be input to the channel browsing processing unit 170 without analog / digital conversion.

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

For example, when the set-top box is a set-top box for an IP (Internet Protocol) TV, the video, audio and data signals processed by the IPTV set-top box can be transmitted to the controller 160 so that bi- , And may transmit signals processed by the control unit 160 to the IPTV set-top box.

Meanwhile, the IPTV may include ADSL-TV, VDSL-TV, FTTH-TV and the like depending on the type of the transmission network. The IPTV may include a TV over DSL, a video over DSL, a TV over IP BTV), and the like. In addition, IPTV may also mean an Internet TV capable of accessing the Internet, or a full browsing TV.

On the other hand, the video display apparatus 100 is connected to the Internet via a network interface such as an Ethernet terminal of the external signal input / output unit 128, a wireless communication unit, or a set-top box for an IP (Internet Protocol) Can be performed.

Also, the external signal input / output unit 128 may be connected to a communication network capable of video or voice communication. The communication network may mean a broadcasting communication network, a public telephone network, a mobile communication network, etc. connected through a LAN.

Although not shown in the figure, when the signal output from the external signal input / output unit 128 is a digital signal, the signal can be input to the channel browsing processing unit 170 and processed.

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 or a DVB scheme, the first demodulator 130 performs 8-VSB (8-Vestigal Side Band) demodulation or And performs CODDMA (Coded Orthogonal Frequency Division Modulation) demodulation. In addition, the first demodulation unit 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.

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.

The stream signal TS 1 is input to the control unit 160 to perform demultiplexing, signal processing, and the like.

The second demodulating unit 135 receives the digital IF signal DIF 2 converted by the second tuner 125 and performs a demodulating operation and outputs the stream signal TS 2 to the channel browsing processing unit 170 . The operation of the second demodulation unit 135 will be omitted with reference to the operation of the first demodulation unit 130 described above.

The analog / digital converter 140 converts the analog baseband video signal CVBS 2 output from the second tuner 125 into a digital signal. For example, sampling and quantization may be performed and converted to 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 control unit 160 demultiplexes the input stream and processes the demultiplexed signals to generate and output a signal for video and audio output. The control unit 160 can control the image display apparatus 100 by a user command or an internal program input through the interface unit 150 and the like. 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, an OSD generating unit, and the like.

The controller 160 controls the tuners 120 and 125 to control the RF broadcasting signal corresponding to the selected channel or the previously stored channel.

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. Also, when the demultiplexed video signal is an AVS-standard-coded video signal according to the DTMB scheme, it can be decoded by the AVS 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 by the control unit 160 is input to the audio 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 an external output device (not shown).

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 program title, program description, start time, end time, and channel information 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 may include DVB-SI information in the DVB scheme . The ATSC-PSIP information or the DVB-SI information may be information included in the above-mentioned stream, i.e., the header (3 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 kinds of information on the display 180 based on at least one of the image-processed video signal and the data-processed data signal, and the user input signal from the remote control device 200 It is possible to generate a signal for display in graphic or 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.

In addition, the controller 160 receives the analog baseband video / audio signal (CVBS / SIF) and performs signal processing. Here, the analog baseband video / audio signal CVBS / SIF input to the controller 160 may be an analog baseband video / audio signal from the tuner 120 or the external signal input unit 128. The signal-processed video signal is input to the display 180 and displayed, and the signal-processed audio signal is input to the audio output unit 185, for example, a speaker and is output as a voice.

On the other hand, when there is an input of a video channel list, the control unit 160 generates a thumbnail list using the thumbnail image generated by the channel browsing processing unit 170, and controls the display unit 180 to display the thumbnail list.

Examples of the types of the video channel list include an entire view, a simplified view, and a folder view.

In the overall view, a thumbnail list including thumbnail images is displayed in most areas of the display 180, and all the thumbnail images generated by the channel browsing processor 170 can be displayed. If the display area of the display 180 is exceeded, it can be displayed through the next page, the previous page function, or the number changing function.

In the simplified view, a thumbnail list including a thumbnail image is displayed in a part of the display area 180 while the main image is displayed in most areas.

In the folder view, a folder list is displayed on the display 180. When one of folders in the folder list is selected, a thumbnail list having thumbnail images classified in the folder is displayed.

In the drawings and the like of this specification, the entire view and the folder view are mainly described.

The control unit 160 controls the thumbnail list to be displayed on the display 180 when the thumbnail list is displayed in the full view, the simple view, or the folder view. Specifically, the control unit 160 demultiplexes the stream generated from the channel browsing processing unit 170 to extract a thumbnail image. This will be described in detail below.

Meanwhile, the controller 160 may generate an updated thumbnail list having the updated thumbnail image to be displayed on the display 180 even when updating the thumbnail image.

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 channel browsing processing unit 170 may perform a channel browsing process on a broadcast signal corresponding to a received channel. Specifically, the demodulation unit 130 or 135 receives the demodulated and channel-decoded stream signal TS 1 or TS 2, or receives the converted digital signal DV from the analog-to-digital conversion unit 140, Demultiplexes the signal TS 1 or TS 2, extracts a part of the demultiplexed video signals, multiplexes the demultiplexed video signal based on the video signal including the extracted video signal, and outputs a new stream signal TSa have. For example, the stream signal TSa or TSb may be an 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 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, at least one image of a plurality of channels of broadcast signals and various external input images is extracted and re-encoded in a stream form through the channel browsing processor 170, Or a mixture of the channel list and the external input list is displayed on the display 180, at least some of the broadcast signals of the plurality of channels and the external input images from the plurality of external input devices are converted into thumbnail images, To display on the display 180 a list of thumbnails. Accordingly, the user can intuitively know contents input from a plurality of channels or an 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.

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

In addition, the storage unit 175 may store the corresponding broadcast channel through the channel memory function. In particular, the pre-stored channels may be stored in the channel map, and the pre-stored channels may be provided to the controller 160 when viewing the video channel list view. The control unit 160 may control the tuner 120 or 125 to sequentially receive a plurality of channels.

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 a video signal, a data signal, an OSD signal processed by the control unit 160 or a video signal and a data signal received from the external signal input / output unit 128 into R, G, and B signals, Signal. 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 audio 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 audio 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.

On the other hand, the remote control device 200 may be a spatial remote controller that can be controlled according to the operation of the x, y, and z axes.

In the figure, two tuners are shown and at least one thumbnail image is displayed on the display 180. However, the present invention is not limited to this, and it is also possible to implement embodiments of the present invention through a single tuner.

The video display apparatus 100 described above can be applied to a digital broadcasting system of the ATSC system (8-VSB system), digital broadcasting of the DVB-T system (COFDM system), DTMB system digital broadcasting, ISDB- Digital broadcasting of the ATSC-M / H type, digital broadcasting of the DVB-H (digital terrestrial DMB) system, (COFDM) digital broadcasting, a Media Foward Link Only (DFL) digital broadcasting, or 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) .

Meanwhile, the block diagram of the image display apparatus 100 shown in FIG. 1 is a block diagram for 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 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.

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 can transmit any one of the input streams TS 1 and TS 2 to the demultiplexer 210. Accordingly, after the demultiplexing unit 210, a thumbnail image can be generated. This method can be performed in the whole view of the video channel list or in the folder view, as described above.

On the other hand, as described above, the switch 205 outputs any one of the input streams TS 1 and TS 2 as it is as it is without any additional operation (Tsb) and outputs the other stream as the main stream To the multiplexing unit 210. The main stream corresponds to the main video signal and can be displayed in most areas on the display 180. [ The sub stream transmitted to the other demultiplexer 210 corresponds to a sub video signal outside the main channel and can be displayed in a partial area of the display 180. [ This method can be performed at the time of a simple viewing of the video channel list, as described above.

The demultiplexer 210 demultiplexes the input stream signal TS 1 or TS 2 into a video signal, an audio 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 MPEG 2, MPEG-4, H.264, AVS 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 a video signal input from the picture decoder 215 or the DV decoder 217. [ 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. [ 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 video signals to different sizes according to a simple view of the video channel list, a full view of the video channel list, and a folder view of the video 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 simple viewing of the video channel list. In addition, for example, the size of the thumbnail image when the folder of the image channel list is viewed may be larger than the size of the thumbnail image when the image channel list is entirely displayed.

Meanwhile, the simple view, full view, and folder view functions described above can be performed even when displaying an external input list on the display 180 in addition to the channel list. Also, the present invention can be performed when displaying the video channel list and the external input list on the display 180 together.

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 thumbnail image of the still image or the thumbnail image of the moving image encoded by the image encoder 230 is displayed in at least one area of the display 180 in the future.

The stream encoder 240 encodes the image encoded by the image encoder 230 into 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.

As a result, the stream (TSa or Tsb) output from the channel browsing processing unit 170 may include a stream of the generated thumbnail image itself or a newly multiplexed stream.

Meanwhile, the block diagram of the channel browsing processor 170 shown in FIG. 2 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 the specification of the actual implemented channel browsing processor 170. [

FIG. 3 is a flowchart illustrating an operation method of an image display apparatus according to an embodiment of the present invention, and FIGS. 4 to 10 are diagrams referred to explain the embodiments of the present invention.

Referring to the drawing, first, a broadcast signal of a predetermined channel is received (S305). Then, a thumbnail image is generated based on the broadcast signal of the received channel (S310).

The tuner 120 or 125 receives a broadcast signal of a predetermined channel. Here, the predetermined channel may be a storage unit 175, specifically, all channels previously stored in the channel map, or a pre-stored favorite channel. The control unit 160 controls the tuner 120 or 125 to receive a broadcast signal of a predetermined channel. On the other hand, for a plurality of channels, each of the tuners 120 or 125 can sequentially receive a broadcast signal.

The channel received by the tuner 120 or 125 is input to the channel browsing processing unit 170 as a stream type (TS 1, TS 2) through the demodulating unit 130 or 135. Then, the channel browsing processing unit 170 generates a thumbnail image.

For example, the channel browsing processing unit 170 demultiplexes a stream (TS 1 or TS 2) inputted through the demodulating unit 130 or 135, decodes the demultiplexed video signal, and outputs the decoded video Converts the format of the signal. Then, it encodes it as a stream and outputs it as a new stream TSa.

On the other hand, in the case of an analog channel, the analog signal is input to the channel browsing processor 170 via the analog-to-digital converter 140 as shown in FIG. 1, instead of the demodulator 130 or 135. Then, a new stream TSa including the thumbnail image generated by the channel browsing processor 170 is output.

Next, it is determined whether there is a video channel list view input (S315). The controller 160 determines whether the video channel list key of the remote controller 200 is operated or the video channel list item is selected from the menu on the display 180. [

Next, it is determined whether it is a whole view (S320) or a folder view (S325). The controller 160 determines whether the entire view item of the image channel list is selected from the menu on the display 180 or the folder view item is selected.

In the case of folder view, a folder list is displayed (S330). The folder list may be a list stored in the storage unit 175 in advance.

For example, the folder list may include at least one of a favorite channel folder for each user, a latest viewing channel folder for each user, a channel folder for each broadcast genre, a channel folder for each viewable age, a deleted folder, .

In addition, the folder list may be displayed on the display 180, including an upper folder or subfolder. That is, it can be displayed in a pull down format or a pop up format.

The display of the folder list can be controlled by the control unit 160. [

Figures 4 to 5 illustrate the display of such a folder list.

4 illustrates that on the display 180 a folder list 410 including a user 1 folder 430 and a user 2 folder 440 is displayed. As described above, by displaying the folder list storing the favorite channels or the like for each user on the display 180, user's convenience of use is increased.

On the other hand, a menu 420 including an item "edit channel", a "search" item, an "arrange" item, a "quick view" item, an "all view" item, and an " do. Accordingly, various operations such as editing, searching, and sorting can be performed in a state that the thumbnail list is displayed, so that user convenience is improved.

5 illustrates that on the display 180 a folder list 510 including the user 1 folder 530 and the user 2 folder 540 is displayed. On the other hand, unlike FIG. 4, the subfolders are displayed in a pull down form. Accordingly, the user can easily recognize the contents in the folder. In this state, folder editing or the like becomes possible. Meanwhile, a menu 520 including a variety of items is illustrated at the lower side of the display 180.

If a specific folder is selected while the folder list is displayed, the first thumbnail list having a thumbnail image belonging to the selected folder is displayed in step S340.

When any one of the folder list stored in the storage unit 175 is selected, the control unit 160 controls the display unit 160 to display a thumbnail image of a channel belonging to the folder.

For example, the controller 1600 demultiplexes the stream TSa including the thumbnail image generated by the channel browsing processor 170. The demultiplexed stream decodes the encoded thumbnail image and outputs the decoded thumbnail image Generates a first thumbnail list and displays the generated first thumbnail list on the display (180).

FIG. 6 illustrates displaying a first thumbnail list in a selected folder on display 180. FIG.

6 (a), when the favorite folder 650 of the folder list 610 is selected while the folder list 610 is displayed, the favorite folder 650 is displayed in the favorite folder 650 as shown in Fig. 6 (b) A first thumbnail list 660 including a thumbnail image belonging to the first thumbnail list 660 is displayed. Accordingly, the user can easily grasp the thumbnail image of the desired channel.

On the other hand, in addition to the first thumbnail list 660, a moving object 670 having an upper folder moving object or a lower folder moving object may be displayed on the display 180. Accordingly, the user can easily move to an upper folder or a lower folder.

Meanwhile, a menu 620 including a variety of items is illustrated at the lower side of the display 180.

Next, at least one thumbnail image of the thumbnail list is updated (S350), and the updated thumbnail list is displayed on the display (S355).

Figure 7 illustrates an update of the thumbnail list. As shown in FIG. 7 (a), the thumbnail image 790 of one of the first thumbnail lists 760 can be updated while the folder view of the video channel list is displayed. 7 (b) shows that one of the thumbnail images 795 in the first thumbnail list 760 is updated. Such an update may be performed on other thumbnail images, and may be performed sequentially.

On the other hand, if it is determined in step 320 (S320) that all the thumbnail images are displayed, a second thumbnail list including all generated thumbnail images is displayed (S360). The provision of all the thumbnail images means that the thumbnail images are displayed in most areas on the display 180. If the thumbnail images can not be displayed on all the pages, the thumbnail images can be displayed through the previous view menu or the next view menu .

Next, it is determined whether any thumbnail image in the thumbnail list is selected in the entire view state of the video channel list (S365). Then, the selected thumbnail image is added to the selected folder (S370).

Figure 8 illustrates the addition of selected thumbnails to a specific folder in the overall view. As shown in FIG. 8 (a), when a second thumbnail list 810 including a plurality of thumbnail images is displayed and one of the thumbnail images 835 is selected or focused, as shown in FIG. 8 (b) A favorite folder or a focused thumbnail image 835 may be added. That is, the corresponding thumbnail image 835 may be added to the first thumbnail list 830. As a result, the folder can be edited according to the user's taste.

Here, the selected folder can be selected by designation of the user. Although not shown in the drawing, the favorite folder 650 can be selected through the remote control device 200 or the like, as shown in Fig. 6 (a).

As a result, the user can edit the folder list according to his or her preference, thereby enhancing the convenience for the user.

On the other hand, after step 370 (S370), the above-described update and display step (S350, S355) may be performed.

Next, in step S340, if a thumbnail image is selected in a state in which the first thumbnail list is displayed according to the folder view of the image channel list (S380), the selected thumbnail image may be deleted from the folder S385).

Fig. 9 illustrates deletion of a thumbnail selected in the folder view. As shown in FIG. 9 (a), when a first thumbnail list 910 including a plurality of thumbnail images is displayed and one of the thumbnail images 915 is selected or focused, as shown in FIG. 9 (b) The selected or focused thumbnail image 915 may be deleted. That is, a new first thumbnail list 950 in which the number of thumbnail images is reduced can be displayed on the display 180. As a result, the folder can be edited according to the user's taste.

On the other hand, after step 385 (S385), the update and display steps (S350, S355) described above may be performed.

Next, in step S340, if the first thumbnail list is displayed according to the folder view of the video channel list, if there is a search input (S390), a thumbnail image corresponding to the searched channel is searched for A third thumbnail list can be displayed (S395).

10 illustrates search and search results in a folder view. 10 (b) and 10 (c), when the search item 1025 of the menu 1020 is selected or focused while the first thumbnail list 1010 including a plurality of thumbnail images is displayed as shown in FIG. 10 The search condition setting menu 1050 is displayed.

The search condition setting menu 1050 may include at least one of a folder name, a genre, a viewable age, a broadcast start time, and broadcast popularity, for example.

In Fig. 10 (b), a folder name, a genre, and a viewable age are illustrated. As a result, the retrieved result is displayed on the display 180 as a third thumbnail list 1060, as shown in FIG. 10 (c). Accordingly, the user can grasp only the thumbnail image of the channel desired by the user.

On the other hand, such search and search result display can be performed not only in the folder view of the video channel list, but also in the whole view or the simple view.

On the other hand, after step 385 (S385), the update and display steps (S350, S355) described above may be performed.

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 that can be read 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 may also be implemented in the form of 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 will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

1 is 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.

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

4 to 10 are drawings referred to explain the embodiment of the present invention.

Claims (20)

Generating a thumbnail image of each channel based on a broadcast signal of a predetermined channel received through a tuner; And The method comprising the steps of: displaying a folder list of a preset video channel list on a display when a folder view input of a video channel list is input; displaying a first thumbnail image of a channel belonging to the selected folder, The thumbnail list is displayed on the display, Displaying a second thumbnail list including all of the generated thumbnail images when there is an entire view input of the video channel list, Displaying a third thumbnail list having a thumbnail image corresponding to a channel searched according to a search condition when there is a search input of the video channel list; And displaying the image on the display device. delete The method according to claim 1, Wherein the folder list is displayed including a subfolder. The method according to claim 1, The folder list includes: Wherein the video display device includes at least one of a favorite channel folder for each user, a latest viewing channel folder for each user, a channel folder for each broadcast genre, a channel folder for each viewable age, a deleted folder, How it works. The method according to claim 1, The upper folder moving object or the lower folder moving object is displayed on the display in addition to the first thumbnail list. delete The method according to claim 1, Wherein the search condition includes at least one of a folder name, a genre, a viewable age, a broadcast start time, and broadcast popularity. The method according to claim 1, And deleting the selected thumbnail image from the folder when the first thumbnail list is displayed. delete The method according to claim 1, And adding the selected thumbnail image to the selected folder in a state that the second thumbnail list is displayed. The method according to claim 1, Wherein the generating the thumbnail image comprises: And sequentially generating a thumbnail image based on a broadcast signal of channels sequentially received. The method according to claim 1, And updating at least one thumbnail image of the first thumbnail list. The method according to claim 1, Wherein the generating comprises: Demultiplexing an input stream; Decoding a video signal among the demultiplexed streams; And And converting the format of the decoded video signal into the format of the decoded video signal. The method according to claim 1, The thumbnail list display step may include: Demultiplexing a stream including the generated thumbnail image; Decoding the encoded thumbnail image of the demultiplexed stream; And And displaying the first thumbnail list having the decoded thumbnail image. display; A tuner for receiving a broadcast signal of a predetermined channel; And Generating a thumbnail image of each channel based on a broadcast signal of the received channel, displaying a folder list of a preset video channel list on the display when a folder view input of the video channel list is present, When a folder is selected, a first thumbnail list having a thumbnail image of a channel belonging to the selected folder is displayed on the display, A second thumbnail list including all of the generated thumbnail images is displayed on the display when all the view entry of the video channel list is input, A controller for controlling the display unit to display a third thumbnail list including a thumbnail image corresponding to the searched channel according to a search condition when there is a search input of the image channel list; And a display unit for displaying the image. delete delete delete 16. The method of claim 15, And a channel browsing unit for generating the thumbnail image based on the received broadcast signal. 16. The method of claim 15, And a demodulator for demodulating the received broadcast signal.

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