KR20110064554A - Image display device and its operation method - Google Patents

Abstract

The present invention relates to an image display apparatus and an operation method thereof. An operating method of an image display apparatus according to an exemplary embodiment of the present invention may include receiving a broadcast signal, generating a plurality of thumbnail images based on the received broadcast signal, and a channel including a video signal among the plurality of thumbnail images. And sorting the thumbnail images included in at least one of the first thumbnail image group corresponding to the second thumbnail image group corresponding to the channel not including the image signal and displaying the thumbnail images on the display.

As a result, the thumbnail image is displayed by distinguishing the image channel from the non-image channel so that the user can easily grasp the broadcast signal of the channel which is intuitively received, thereby increasing the user's convenience. In addition, only the thumbnail image corresponding to the image channel may be updated to improve the update speed of the thumbnail image.

Description

Apparatus for displaying image and method for operating the same}

The present invention relates to a method of operating an image display apparatus, and more particularly, to an image display apparatus and an operation method capable of grasping a broadcast signal of a channel received intuitively and efficiently.

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.

In addition to the trend of switching to digital broadcasting, broadcasting broadcasts are increasing in response to various needs of users. In order to recognize each increased broadcast in the current video display device, each broadcast must be selected through channel switching, which causes a lot of time-consuming inconvenience.

Accordingly, an object of the present invention is to provide an image display apparatus and an operation method thereof, which can grasp information about a non-video channel that does not include a broadcast signal and an image signal of a channel that is intuitively received.

An operating method of an image display apparatus according to an exemplary embodiment of the present invention may include receiving a broadcast signal, generating a plurality of thumbnail images based on the received broadcast signal, and a channel including a video signal among the plurality of thumbnail images. And sorting the thumbnail images included in at least one of the first thumbnail image group corresponding to the second thumbnail image group corresponding to the channel not including the image signal and displaying the thumbnail images on the display.

In addition, the image display device according to an embodiment of the present invention for achieving the above object, a display that displays at least one thumbnail image, a tuner for receiving a broadcast signal and a channel corresponding to a channel including the video signal of the broadcast signal And a controller configured to control thumbnail images included in at least one group of the first thumbnail image group and the second thumbnail image group corresponding to the channel not including the image signal to be displayed on the display.

As a result, the thumbnail image is displayed by distinguishing the image channel from the non-image channel so that the user can easily grasp the broadcast signal of the channel that is intuitively received, thereby increasing user convenience. In addition, only the thumbnail image corresponding to the image channel may be updated to improve the update speed of the thumbnail image.

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 audio 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 part of the screen, 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 an RF broadcast signal (sub RF broadcast signal) or all RF broadcast signals sequentially and periodically, and convert them into 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 device. To this end, the external signal input unit 128 may include an A / V input / output unit and a wireless communication unit.

The external signal input unit 128 is connected to an external device such as a digital versatile disk (DVD), a Blu-ray, a game device, a camcorder, a computer (laptop), or the like to receive an external input video signal, an external input audio signal, and an external device. The input data signal is transmitted to the controller 160 in the image display apparatus 100. In addition, the video signal, the audio signal, and the data signal processed in the controller 160 may be output to another external device.

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

Although not shown in the drawing, 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 thumbnail image extraction processing. For example, the analog signal input through the CVBS terminal and the S-video terminal may be converted into a digital signal and then input to the channel browsing processor 170 as described above. The digital signal 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. (Transprt Stream).

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.

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 Internet Protocol (IP) 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. The stream signal TS 1 at this time 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 TS (Transprt Stream) 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 TS1 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 digital video broadcasting (DMB) method or a coded video signal of H.264 standard according to DVB-H, it may be decoded by an 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 voice 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 Progtam 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. In detail, the controller 160 is configured to display various types of information on the screen of 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. It can generate a signal for displaying a 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 the received channel and various input video signals input through the external signal input unit 128. Specifically, the demodulation unit 130 or 135 receives the demodulated and channel decoded stream signal TS 1 or TS 2, receives the stream signal from the external input signal input unit 128, or receives an analog / digital converter ( An image signal including the digital signal DV converted in operation 140, demultiplexing the stream signal TS 1 or TS 2, extracting some of the demultiplexed image signals, and including the extracted image signal The new stream signal TSa may be output by multiplexing on the basis of. 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.

In the exemplary embodiment of the present invention, when the channel list is displayed on the display 180 by extracting a partial image of the broadcast signal of the plurality of channels through the channel browsing processing unit 170 and re-coding the stream in the form of a stream, the broadcast signal of the multiple channel At least a part of the image may be displayed on a screen in the form of a thumbnail. Accordingly, the user can intuitively know the contents broadcast in the other channel.

When the channel browsing processor 170 extracts a partial image 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 part of the external input image from the external input device may be displayed on the screen in the form of a thumbnail. Accordingly, the user can intuitively know the content input from the external input device.

Meanwhile, the channel browsing processor 170 extracts the broadcast signal image of the above-described channel and the partial image of the above-described external input image and re-encodes the image in a stream form to display the channel list and the external input list on the display 180. In this case, at least a part of a broadcast signal image of a plurality of channels and an external input image from a plurality of external input devices may be displayed on a screen in a thumbnail form. 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 voice 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 the voice. The voice 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.

On the other hand, the remote control device 200 according to an embodiment of the present invention may be a spatial remote control. A description of the spatial remote controller will be provided later with reference to FIG. 3.

Meanwhile, in the drawing, two tuners are shown to display a thumbnail image on a screen when viewing a channel list, which is an embodiment of the present invention. However, the present invention is not limited thereto, and an embodiment of the present invention is implemented through one tuner. It is also possible.

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. 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 TS1 or TS 2 and divide the received stream signal TS1 or TS 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 part 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 the format of the video signal input from the picture decoder 215 or the DV decoder 217. For example, the magnitude (resolution) of the input video signal may be converted. This size conversion is performed such that when shown in thumbnail form on the display 180, it is shown at an appropriate size.

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 image shown in thumbnail form in the entire view of the "image channel list" may be larger than 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 in a thumbnail form 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 processor 170 extracts and re-encodes at least some of the broadcast signal image and the external input image of the plurality of channels to display the “channel list view” or “external input list view”. At least a portion of the plurality of channel broadcast signal images and the external input images from the plurality of external input devices may be displayed on the screen in thumbnail form. Accordingly, the user can intuitively know the content broadcast on another channel or the content input from the external input device.

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 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 signals 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 provided 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 corrects a hand shake or an error from a signal corresponding to the operation of the spatial remote controller 301 received through the wireless communication unit 320 to display 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 an example of a screen on which a thumbnail image is displayed on a display.

Referring to FIG. 5, a screen 500 including a thumbnail image list displayed on a display is shown. In addition to the thumbnail image 510 of a general broadcast channel including a video signal, the controller includes a data broadcast channel 520 and a radio channel 530. In the case of a channel that does not include an image signal, such as an audio channel (not shown), broadcast information may be displayed, or it may be controlled to be replaced by a preset thumbnail image. FIG. 5 illustrates a case where a preset thumbnail image including an icon 540 representing a radio channel is displayed.

The size of the thumbnail images may vary depending on the setting, but in order not to interfere with the increase in the number of channels and the viewing of the channel being viewed, it may be preferable to display the images at a small size and to enlarge them when there is a selection or focusing command.

When there is a selection command of one of the plurality of displayed thumbnail images, an input image screen corresponding to the selected channel is displayed on the display 180. The selection command may be selected by moving the pointer 505 displayed corresponding to the operation of the spatial remote controller as well as the movement of the cursor through the direction key of the remote controller.

Meanwhile, before the selection command, it is possible to focus any one of the displayed thumbnail images. For example, when there is a focusing command for any one of the displayed plurality of channel numbers and thumbnail images, the corresponding thumbnail image may be focused and displayed.

The focusing command may be performed by inputting a direction key of a remote controller or a pointer input of a spatial remote controller. The thumbnail image focused by the direction key input or the pointer input may be focused by at least one of cursor display, highlight display, and enlarged display. Can be displayed. When the focused thumbnail image is moved by a direction key input or a pointer input, the focused thumbnail image may be moved and displayed continuously.

Meanwhile, when the thumbnail image list screen 500 including the thumbnail image is displayed on the display 180, when there is an editing command, the displayed thumbnail image may be edited.

For example, when any one of a plurality of displayed thumbnail images is focused, if there is an editing command, the focused thumbnail image may be edited. The editing operation may be performed in various forms, such as "favorite registration", "delete registration", and "lock registration" of the focused thumbnail image.

However, as shown in FIG. 5, when the video channel and the non-video channel are not aligned and mixed, the eyes of the user may be distributed to the video channel or the non-video channel.

In addition, when tuning while increasing the full-band frequency, the update update rate of the thumbnail image is proportional to the tuning rate. It takes time as many as the number of thumbnail images displayed on the screen in order for a user to see a plurality of thumbnail images included in the screen updated and displayed. Therefore, although only the thumbnail image of the channel having the change of image needs to be updated, the mixed non-image channel is also tuned, so that the time for updating the thumbnail image displayed on the screen may be increased.

Accordingly, the present invention distinguishes and displays a video channel from a non-video channel so that a user may intuitively recognize not only a thumbnail image of a general channel including a video signal but also channel information of a channel not including a video signal on one screen. To provide a video display device that can be. In addition, according to the user's selection or setting, the thumbnail image corresponding to the channel of the type that the user does not want is displayed as the folder menu, and only after the folder menu is selected, the update rate of the thumbnail image can be increased.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 6 to 9.

6 is a flowchart illustrating a method of operating an image display apparatus according to an exemplary embodiment of the present invention, and FIGS. 7 to 9 illustrate various examples of screens displayed on a display according to the method of operating the image display apparatus according to the present invention. .

According to an embodiment of the present invention, a method of operating an image display apparatus includes receiving a broadcast signal (S610), generating a plurality of thumbnail images based on the received broadcast signal (S620), and among the plurality of thumbnail images. Sorting and displaying a thumbnail image included in at least one group of a first thumbnail image group corresponding to a channel including an image signal and a second thumbnail image group corresponding to a channel not including the image signal (S630) ).

As illustrated in FIG. 7, the controller 160 displays thumbnail images 710 of a first thumbnail image group corresponding to a channel including an image signal in a first area of the display and does not include an image signal. The thumbnail images 720 of the second thumbnail image group corresponding to may be controlled to be displayed in alignment with a second region different from the first region.

Since the image channel and the non-image channel are arranged to be distinguished from each other, the user can watch the thumbnail image of interest among the plurality of thumbnail images, and the visibility and the user's convenience can be increased. The user can intuitively recognize the aligned video channel and the non-video channel and select a channel that he / she wants to watch.

In addition, the displayed thumbnail image may be a current input image or a pre-stored image. These thumbnail images may be images that are processed by the channel browsing processor 170 and are extracted.

The method of operating an image display apparatus according to an exemplary embodiment of the present invention may include updating a thumbnail image list including at least one of the thumbnail images of the first thumbnail image group (S640) and the updated thumbnail image. It may further comprise a step (S650).

The thumbnail image may be updated periodically or randomly, or part or all of the thumbnail image may be updated. Here, the updated thumbnail image may be based on the image updated by the channel browsing processor 170 described above.

That is, by periodically or randomly updating only thumbnail images of the first thumbnail image group in which there is an image change, it is not necessary to tune a non-image channel in which there is no image change. Therefore, the time required for updating the entire thumbnail image is reduced, and the user can check the latest thumbnail image within a shorter time, thereby more conveniently selecting a viewing channel.

The controller may be configured to display a thumbnail image list including thumbnail images of the first thumbnail image group on the display and to display a folder menu of the second thumbnail image group on the display.

Referring to FIG. 8A, a thumbnail image list including a thumbnail image 810 of the first thumbnail image group is displayed, and a folder menu 820 of the second thumbnail image group is displayed on at least a portion of the display. Only a thumbnail image corresponding to a channel having a change in image is displayed on the screen, and a non-image channel is not displayed on the screen unless the folder menu 820 is selected. The thumbnail image list may be displayed on a portion of the display.

Since users often watch video channels with video changes through the video display device, the non-video channels are displayed only when the user selects them, and the thumbnail video list is sorted and displayed mainly on the video channels to increase user convenience. .

On the other hand, since thumbnail images of the first thumbnail image group in which there is a video change are displayed on the screen, thumbnail images of non-image channels that are not updated between the thumbnail images being updated are not mixed. Therefore, the update of the entire thumbnail image is performed naturally without interruption sequentially. In addition, the time required for updating the entire thumbnail image is reduced, and the user can check the latest thumbnail image within a shorter time, thereby more conveniently selecting a viewing channel.

In addition, when the folder menu 820 of the second thumbnail image group is selected, the controller controls to display a thumbnail image list or a subfolder menu including the thumbnail image of the second thumbnail image group on the display.

FIG. 8B illustrates an embodiment in which sub-folder menus are displayed when the folder menu 820 of the second thumbnail image group is selected.

Referring to FIG. 8B, a radio channel folder menu 830, a data broadcasting channel folder menu 840, an audio channel folder menu 850, and the like are displayed as subfolder menus of the non-video channel folder menu 820. In FIG. 8B, a case in which a radio channel, a data broadcast channel, and an audio channel are set as submenus of a non-image channel is illustrated. However, the number of upper and lower menus, item setting, and the like may be changed.

Meanwhile, when one of the sub folder menus is selected, a thumbnail image included in the selected sub folder menu may be displayed on the display.

The user may display on the screen as a folder menu according to the characteristics of the channel, and if necessary, select it to check a thumbnail image or a subfolder menu inside the folder menu. Therefore, it is possible to selectively check the content and determine whether to watch.

In addition, the controller may control to display the first thumbnail image group on the display as a folder menu and display a thumbnail image list including the thumbnail image of the second thumbnail image group in the display operation (S630). Can be.

As illustrated in FIG. 9, the thumbnail images 910 of the second thumbnail image group may be aligned and displayed, and the image channel folder menu 920 may be displayed on a portion of the display of the first thumbnail image group.

In this case, since the thumbnail image of the second thumbnail image group corresponding to the non-image channel is not required to be updated, the image display device does not need to perform an update operation of the thumbnail image displayed on the screen. Therefore, unnecessary operation and load of the system of the image display apparatus can be eliminated.

The thumbnail image of the second thumbnail image group may be an image including at least one of broadcast information and an icon representing a type of broadcast.

In the digital broadcasting, there may be a channel that does not include an image signal, such as an audio broadcasting carrying only voice and a data broadcasting carrying only data such as radio broadcasting and text.

That is, in the case of a channel that does not include a video signal, the icon that displays the characteristics of the channel, a service provider name, a channel name, a channel logo, and the like are displayed by replacing a thumbnail image including a character or an image that displays broadcast information. will be. Here, the character or the image for displaying the icon and the broadcast information is not limited to the above example, and may be variously set according to a user's preference.

Accordingly, the user can intuitively recognize not only the thumbnail image of the general channel including the video signal but also the channel information of the channel not including the video signal on one screen, thereby increasing user convenience.

In addition, when the folder menu 920 of the first thumbnail image group is selected, a thumbnail image list or a subfolder menu including the thumbnail image of the first thumbnail image group may be displayed on the display.

Meanwhile, the thumbnail image based on the broadcast signal image of the received channel may be a thumbnail image corresponding to a broadcast signal of a previously stored channel. That is, through the channel memory function, the stored broadcast channel may be received through the second tuner 125, converted into a thumbnail image, and displayed on the display 180. Accordingly, the thumbnail image of the channel having the channel number including the input number among the thumbnail images of the broadcast signal image of the pre-stored channel may be displayed together with the corresponding channel number list.

On the other hand, the operation method of the image display device according to the present invention is to store the channel with the image change of the broadcast signal in the first channel map of the storage unit, and the channel without the image change is stored in the second channel map of the storage unit It may further include. In this case, the first thumbnail image group may correspond to the first channel map, and the second thumbnail image group may correspond to the second channel map.

The thumbnail image may be a still image or a moving image.

The image display apparatus and its operation method according to the present invention are not limited to the configuration and method of the embodiments described as described above, but the embodiments are all or part of each embodiment so that various modifications can be made. May be optionally 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.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

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 an example of a screen on which a thumbnail image is displayed on a display.

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

7 to 9 illustrate various examples of screens displayed on a display according to an operating method of an image display apparatus of the present invention.

Claims (20)

Receiving a broadcast signal; Generating a plurality of thumbnail images based on the received broadcast signal; And Sort and display thumbnail images included in at least one group of a first thumbnail image group corresponding to a channel including an image signal among the plurality of thumbnail images and a second thumbnail image group corresponding to a channel not including an image signal. Displaying on the; operating method of an image display device comprising a. The method of claim 1, Updating at least one of the thumbnail images of the first thumbnail image group; And And displaying a list of thumbnail images including the updated thumbnail image. The method of claim 1, The display step, And displaying a thumbnail image list including thumbnail images of the first thumbnail image group on the display, and displaying a folder menu of the second thumbnail image group on the display. The method of claim 3, wherein When the folder menu of the second thumbnail image group is selected, And displaying a thumbnail image list or a subfolder menu including the thumbnail images of the second thumbnail image group. The method of claim 1, The display step, And displaying the first thumbnail image group on the display as a folder menu, and displaying a thumbnail image list including the thumbnail image of the second thumbnail image group on the display. The method of claim 5, And a thumbnail image of the second thumbnail image group is an image including at least one of broadcast information and an icon representing a broadcast type. The method of claim 5, When the folder menu of the first thumbnail image group is selected, And displaying a thumbnail image list or a subfolder menu including the thumbnail images of the first thumbnail image group. The method of claim 1, And storing a channel having an image change among the broadcast signals in a first channel map, and storing a channel having no image change in a second channel map. The method of claim 8, And wherein the first thumbnail image group corresponds to the first channel map, and the second thumbnail image group corresponds to the second channel map. The method of claim 1, And the plurality of thumbnail images is a still image or a moving image. A display on which at least one thumbnail image is displayed; A tuner for receiving a broadcast signal; And, The thumbnail images included in at least one group of the first thumbnail image group corresponding to the channel including the video signal among the broadcast signals and the second thumbnail image group corresponding to the channel not including the video signal are arranged on the display. And a control unit which controls to display the video display device. The method of claim 11, The control unit, And control to display, on the display, a list of thumbnail images in which at least one thumbnail image of the first thumbnail image group is updated. The method of claim 11, The control unit, And displaying a thumbnail image list including thumbnail images of the first thumbnail image group on the display, and displaying a folder menu of the second thumbnail image group on the display. The method of claim 13, When the folder menu of the second thumbnail image group is selected, And the controller controls to display a thumbnail image list or a subfolder menu including thumbnail images of the second thumbnail image group on the display. The method of claim 11, The control unit, And displaying the first thumbnail image group on the display as a folder menu, and displaying a thumbnail image list including the thumbnail image of the second thumbnail image group on the display. The method of claim 15, When the folder menu of the first thumbnail image group is selected, And the control unit controls to display a thumbnail image list or a subfolder menu including the thumbnail images of the first thumbnail image group on the display. The method of claim 11, And a thumbnail image of the second thumbnail image group is an image including at least one of broadcast information and an icon representing a broadcast type. The method of claim 11, Further comprising; The controller may control to store a channel having an image change among the broadcast signals in a first channel map of the storage unit, and store a channel having no image change in a second channel map of the storage unit. . The method of claim 18, And the first thumbnail image group corresponds to the first channel map, and the second thumbnail image group corresponds to the second channel map. The method of claim 11, And a channel browsing processor for extracting the plurality of thumbnail images.

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