KR101585693B1 - Display apparatus and channel browser offer method thereof - Google Patents

Abstract

According to another aspect of the present invention, there is provided a method of providing a channel browser of a display device, the method comprising: generating a thumbnail image based on a broadcast signal received through at least one channel; And displaying a channel browser including at least a part of the generated thumbnail images, wherein the thumbnail images included in the channel browser are arranged according to a surrounding viewing environment.

Description

[0001] The present invention relates to a display apparatus and a channel browser providing method,

The present invention relates to a display apparatus, and more particularly, to a display apparatus and a channel browser providing method for arranging channel information included in a channel browser according to a surrounding environment.

The display device is a device having a function of displaying an image that the user can view. In addition, the display device can display a broadcast selected by the user among the broadcast signals transmitted from the broadcasting station on the display. Currently, there is a tendency to switch from analog broadcasting to digital broadcasting worldwide.

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

In addition to the tendency to switch to digital broadcasting, there is an increasing tendency to broadcast in response to various demands of users. In order to recognize each of the broadcasts increased by the user on the current display device, it is necessary to select each broadcast through channel switching, so that much time is inconvenient.

Accordingly, recently, a channel browser including information on a program broadcast through each channel is provided.

The channel browser displays a thumbnail image of a program being broadcasted at the current time through each channel. Accordingly, the user checks a thumbnail image provided in the channel browser, Can be easily grasped.

The present invention provides a display device and a method of providing a channel browser of the present invention in which channel information included in a channel browser can be sorted according to the surrounding environment.

According to another aspect of the present invention, there is provided a method of providing a channel browser of a display device, the method comprising: generating a thumbnail image based on a broadcast signal received through at least one channel; And displaying a channel browser including at least a part of the generated thumbnail images, wherein the thumbnail images included in the channel browser are arranged according to a surrounding viewing environment.

According to another aspect of the present invention, there is provided a display device including: a channel browsing processor for generating a channel browser using a thumbnail image based on an input signal; A display unit for displaying a channel browser generated by the channel browsing unit; And a controller for aligning a thumbnail image included in the channel browser according to a predetermined condition, wherein the controller specifies to sort the thumbnail image according to a surrounding environment in which the display device is installed.

According to the embodiment of the present invention, the channel information included in the channel browser is sorted according to the surrounding environment, thereby improving the user satisfaction by providing the channel browser arranged in the order preferred by the user.

The proposed embodiment will be described.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It should be understood, however, that there is no intention to limit the scope of the present invention to the embodiment shown, and other embodiments which are degenerative by adding, changing or deleting other elements or other embodiments falling within the spirit of the present invention Can be proposed.

Although the term used in the present invention is a general term that is widely used at present, there are some terms selected arbitrarily by the applicant in a specific case. In this case, since the meaning is described in detail in the description of the corresponding invention, It is to be understood that the present invention should be grasped as a meaning of a non-term.

That is, in the following description, the word 'comprising' does not exclude the presence of other elements or steps than those listed.

1 is an internal block diagram of a display device according to an embodiment of the present invention.

1, a display apparatus 100 according to an embodiment of the present invention includes a first tuner 120, a second tuner 125, an external signal input unit 128, a first demodulation unit 130, 2 demodulation unit 135, an analog / digital conversion unit 140, an interface unit 150, a control unit 160, a channel browsing processing unit 170, a storage unit 175, a display 180, 185).

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

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

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

The second tuner 125 sequentially selects a corresponding RF broadcast signal of all broadcast channels previously stored through the channel memory function among the RF broadcast signals received through the antenna according to the present invention, Or to a baseband video / audio signal. In the embodiment of the present invention, since the image of another previously stored channel is displayed in a thumbnail form on at least a part of the screen, it is possible to sequentially receive RF broadcasting signals of all channels previously stored.

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

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

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

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

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

The external signal input 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 (notebook computer), etc. and outputs an external input video signal, And transmits the input data signal to the control unit 160 in the display device 100. [ Further, the video signal, audio signal, and data signal processed in the control unit 160 can be output to another external device.

A / V input / output unit (not shown) includes an Ethernet terminal, a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, and an S - Can include video (analog), DVI (Digital Visual Interface), HDMI, RGB, D-SUB, IEEE 1394, SPDIF, Liquid HD have.

Though not shown in the figure, various input signals input through the external signal input unit 128 may be input to a channel browsing processing unit 170 to be described later, and a thumbnail image extracting process may be performed. For example, the analog signal input through the CVBS terminal and the S-video terminal may be converted into a digital signal and input to the channel browsing processing unit 170, as described above. The digital signal inputted through the other input terminal can be directly inputted to the channel browsing processing unit 170 without analog / digital conversion. Here, the digital signal output from the external signal input unit 128 may be a stream signal. For example, an MPEG-2 TS (Digital Versatile Disc) (Transport Stream).

A wireless communication unit (not shown) 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) .

In addition, the wireless communication unit (not shown) 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.

Meanwhile, the external signal input unit 128 may be connected to the various set-top boxes through at least one of the various terminals described above to perform input / output operations with the set-top box. For example, if the set-top box is a set-top box for an IP (Internet Protocol) TV, the video, audio, and data signals processed in the settop box for IPTV can be transmitted to the controller 160, The control unit 160 may transmit the processed signals to the IPTV set-top box. On the other hand, the video, audio, and data signals processed in the IPTV set-top box can be processed by the controller 160 via the channel browsing processor 170.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

In addition, the control unit 160 may perform an OSD (On Screen Display) process. Specifically, the control unit 160 displays various types of information on the screen of 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 To generate graphics for displaying graphics or text. The generated signal may be input to the display unit 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 display device 100, various menu screens, widgets, icons, and the like.

In particular, the controller 160 confirms a channel browser display condition corresponding to the ambient illuminance level sensed by a sensing unit 190, which will be described later, and controls the channel browsing processor 170, which will be described later, And the thumbnail images generated through the thumbnails are aligned. A detailed description thereof will be given later.

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

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

In the embodiment of the present invention, when a channel list is displayed on the display unit 180 by extracting a partial image of a plurality of channels through the channel browsing processor 170 and re-encoding the selected image into a stream, And generates a thumbnail image of at least a portion of the broadcast signals and displays a channel browser having a plurality of thumbnail images on the display unit 180. [ As a result, the user can intuitively know the content broadcast on the other channel.

The channel browsing processing unit 170 extracts a part of images of various external input images input through the external signal input unit 128 and re-encodes them into a stream form so that when displaying an external input list on the display unit 180, It is possible to display at least a part of the external input image from the external input device of the display unit 180 as a thumbnail image and to display a channel browser having a plurality of generated thumbnail images. Accordingly, the user can intuitively know the contents input from the external input device.

On the other hand, when the channel browsing processor 170 extracts a broadcasting signal image of the channel and a partial image of the external input image described above and re-hatches the stream in the form of a stream to display the channel browser on the display unit 180, The display unit 180 can display a channel browser having a plurality of thumbnail images generated by generating at least a part of a broadcast signal image of a channel and an external input image from a plurality of external input devices as a thumbnail image. Accordingly, the user can intuitively know the contents input from the plurality of channels and the external input device.

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

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

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

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

The display unit 180 converts an image 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 unit 128 into R, G, and B signals, respectively, Signal. The display unit 180 may be implemented in various forms such as a PDP, an LCD, an OLED, a flexible display, and a 3D display. Also, the display unit 180 may be configured as a touch screen and used as an input device in addition to the output device.

The audio output unit 185 receives a signal processed by the 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 voice output unit 185 may be implemented by various types of speakers.

The sensing unit 190 senses the ambient illuminance level at which the display device 100 is installed and transmits data corresponding to the sensed ambient illuminance level to the controller 160.

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 unit 150 and output it.

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

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

Meanwhile, the display device described in this specification includes a TV receiver, a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a PDA (personal digital assistant), and a portable multimedia player (PMP) do.

2 is a simplified block diagram of the control unit of FIG.

The control unit 160 may include a thumbnail image extracting unit 210, an error detecting unit 220, and a channel browsing control unit 230. Referring to FIG. The control unit 160 may further include a video signal processing unit, an audio signal processing unit, and the like as described above.

The thumbnail image processed by the channel browsing processing unit 170 may cause an error during stream transmission to the controller 160 or due to various other reasons. In this case, it is necessary to stably process the updated thumbnail image.

The thumbnail image extracting unit 210 extracts a thumbnail image corresponding to the input signal. For example, when a thumbnail image corresponding to an input signal is extracted from the channel browsing processing unit 170 and encoded into a stream, and the thumbnail stream is transmitted to the controller 160, the thumbnail image extracting unit 210 extracts A thumbnail image can be extracted from the thumbnail stream.

To this end, the thumbnail image extracting unit 210 can demultiplex the thumbnail stream. In addition, a part of the thumbnail image can be extracted by parsing the demultiplexed thumbnail stream.

Here, the input signal may include at least one of a broadcast signal of a channel to be received, and an external input signal from an external input device, as described above.

Meanwhile, the thumbnail image extracting unit 210 may generate a thumbnail list including the extracted thumbnail images. Accordingly, the thumbnail image extracting unit 210 may control the display unit 180 to display the generated thumbnail list.

Meanwhile, the thumbnail image extracting unit 210 may generate a thumbnail list having the updated thumbnail image.

In addition, the thumbnail image extracting unit 210 may perform database management. For example, a database can be created for terrestrial broadcasting, cable broadcasting, digital broadcasting, analog broadcasting, and external input signals. In addition, various functions such as adding, removing, changing, searching, and the like of the thumbnail image may be provided.

The error detecting unit 220 checks an error of the thumbnail image extracted by the thumbnail image extracting unit 210. When an error occurs in the thumbnail image, the thumbnail image in which an error has occurred is prevented from being displayed in a broken form. To this end, the error detector 220 may check at least one of the size information of the extracted thumbnail image, syntax information, checksum information, continuous information, and content information .

When the thumbnail image extracting unit 210 extracts the thumbnail image in units of packets, the error detector 220 checks the size information of the thumbnail image on a packet-by-packet basis to restore the thumbnail image, Checksum information can be checked. When a continuous thumbnail image is extracted for each packet, it is also possible to check the continuity of the received packet unit thumbnail by checking information indicating the order of the packet unit, for example, the packet order bit.

As a content information check, it is also possible to temporarily decode at least a part of the encoded thumbnail image to check whether or not there is an error in the original thumbnail image itself.

When an error is not detected by the error detector 220, the error detector 220 transmits a control signal to the thumbnail image extractor 210 and displays a channel browser screen including the extracted thumbnail image on the display 180 .

When an error is detected by the error detector 220, the error detector 220 transmits a control signal to the channel browsing processor 230 or the thumbnail image extractor 210 to stop updating the thumbnail image, To stop the extraction operation. It is also possible to delete the thumbnail image in which an error is detected from the thumbnail list.

On the other hand, the channel browsing control unit 230 controls the channel browsing processing unit 170 to operate according to a user's command through the interface unit 150. [ For example, when there is a channel list view command, which is a command to display a screen including a thumbnail image, the channel browsing controller 230 receives a thumbnail image corresponding to a broadcast signal image of a channel received by the channel browsing processor 170 As shown in FIG.

In addition, the channel browsing control unit 230 may control the channel browsing processing unit 170 to perform the updating operation. At this time, the channel browsing controller 230 may control operations of the first tuner 120, the second tuner 125, the first demodulator 130, and the second demodulator 135.

For example, a thumbnail image of a channel selected by a user, a thumbnail image of a search cursor, a thumbnail image corresponding to a favorite channel, or a thumbnail image of a channel corresponding to a favorite genre, In the case of a thumbnail image corresponding to the viewing channel, the channel browsing control unit 230 controls operations of the corresponding modules to generate a thumbnail image for the channel corresponding to the user selection, the search cursor position, the preferred channel, the favorite genre, Can be set higher than the refresh rate of other thumbnail images. Thereby, the user can easily select the input image. In particular, when the channel is selected, user convenience is increased.

In addition, the channel browsing control unit 230 controls the channel browsing processing unit 170 to operate. The thumbnail image extracting unit 210 may generate a thumbnail list having the updated thumbnail image.

In addition, the channel browsing control unit 230 may suspend the updating of the thumbnail image in the channel browsing processing unit 170 when an error is detected in the error detecting unit 220.

Meanwhile, the channel browsing control unit 230 controls the operations of the corresponding modules, including the channel browsing control unit 230, to generate a thumbnail image by receiving corresponding broadcasting signals of all broadcasting channels stored in the storage unit 175 can do.

In addition, the channel browsing controller 230 may receive a broadcasting signal corresponding to a predetermined number of channels, rather than all the broadcasting channels, to control the generation of a thumbnail image. The predetermined number of channels may be a channel corresponding to a thumbnail image included in the thumbnail list, and the thumbnail list may be a thumbnail list or the like recently displayed on the display unit 180. [

In addition, the channel browsing control unit 230 may control the display unit 180 to display a thumbnail list including the thumbnail images extracted by the thumbnail image extracting unit 210, unlike the drawing.

Meanwhile, the storage unit 175 may store the thumbnail image extracted by the thumbnail image extracting unit 210. The thumbnail image stored in the storage unit 175 can be displayed through the display unit 180 when there is a channel browser display command through the interface unit 150, for example.

The thumbnail image extracting unit 210, the error detecting unit 220, and the channel browsing processing unit 230 may be implemented as an independent module or a combination of two or more without being included in the controller 160.

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

The channel browsing processing unit 170 includes a switch 305, a demultiplexing unit 310, a picture decoder 315, a DV decoder 317, a format conversion unit 320, a video encoder 330 ), And a stream encoder 340.

The switch 305 selects any one of a plurality of input streams TS 1 and TS 2 and outputs it as it is without conversion operation to the main stream TSb and the remaining streams are transmitted to the demultiplexer 310 do. The main stream corresponds to the main video signal, and the main video signal is displayed on the display 180 in most areas. The sub-stream transmitted to the other demultiplexer 310 corresponds to a sub-video signal other than the main channel, and the sub-video signal can be displayed in a partial area of the display unit 180.

This method can be performed in correspondence with the simple viewing function of the " channel browser " which shows the channel browser only in a part of the area other than the entire area of the display part 180. On the other hand, And displaying the list on the display unit 180. It is also possible to display the channel list and the external input list on the display 180 together.

The demultiplexer 310 demultiplexes the received stream signal TS 1 or TS 2 into a video signal, a voice signal, and a data signal, respectively. Of the separated signals, the video signal is transmitted to the picture decoder 315, and the other audio and data signals can be transmitted to the stream encoder 340 for forming a new stream.

The picture decoder 315 decodes at least part of the demultiplexed video signal. Decoding can be performed by an MPEG 2, MPEG-4 or H.264 decoder or the like. The decoded image may be a still image or a moving image. For example, the picture decoder 315 can decode an image of an I picture among input image signals or decode a part of an input image signal.

The DV decoder 317 receives the digital signal DV converted by the analog / digital converter 140, and acquires a digital image.

The format conversion unit 320 converts the format of a video signal input from the picture decoder 315 or the DV decoder 317. [ For example, the size (resolution) of an input video signal can be converted. This size conversion can be set according to the number of thumbnail images in the thumbnail list displayed on the display unit 180. [ For example, the larger the number of thumbnail images, the smaller the size of the thumbnail image.

On the other hand, the format conversion unit 320 may convert video signals to different sizes according to the simple view of the "channel browser " and the entire view of the" channel browser ". For example, the size of the thumbnail image at the time of full viewing of the "channel browser" may be larger than the size of the thumbnail image at the time of the simple viewing of the "channel browser". The simple view and the full view function described above can be performed even when displaying an external input list on the display unit 180 in addition to the broadcast channel list. The broadcast channel list and the external input list may be displayed on the display unit 180 together.

The video encoder 330 encodes the video signal converted by the format converter 320. [ For example, the size transformed image in the format transforming unit 320 can be encoded by JPEG or MPEG-2. The still image or moving image encoded by the image encoder 330 is displayed on the display unit 180 as a thumbnail image in the future.

The stream encoder 330 encodes the image encoded by the image encoder 330 in a stream format. That is, the image can be re-encoded based on the image encoded by the image encoder 330 and the voice and data signals demultiplexed by the demultiplexer 310. [ The re-encoding may be performed in a multiplexing manner. The encoded stream format may be in the form of MPEG 2 TS.

In the embodiment of the present invention, at least some images of the broadcast signal image and the external input image of a plurality of channels are extracted and re-encoded through the channel browsing processing unit 170 to display the "broadcast channel list view" or "external input list view" A plurality of channel broadcast signal images and an external input image from a plurality of external input devices may be generated as a thumbnail image and a thumbnail list including a plurality of generated thumbnail images may be displayed on the display unit 180 do. Accordingly, the user can intuitively know the content broadcasted on another channel or the content input on the external input device.

4 and 5 are views showing an example of the remote control apparatus of FIG.

Referring to the drawings, a space remote controller 401 can be used as the remote controller of FIG.

The space remote controller 401 is one of the remote control devices 200 that can input commands to the display device 100. [ In this embodiment, the space remote controller 401 transmits and receives signals according to the RF communication standard with the display apparatus 100. [ 4, a pointer 402 corresponding to the space remote controller 401 may be displayed on the display device 100.

The user can move or rotate the space remote control 401 up, down, left, right, back and forth. The pointer 402 displayed on the display device 100 corresponds to the movement of the space remote controller 401. [ FIG. 5 shows a bar on which the pointer displayed on the display device 100 moves in response to the movement of the space remote controller 401.

As shown in FIG. 4, when the user moves the space remote controller 401 to the left, the pointer displayed on the display device 100 also moves to the left corresponding thereto. In the present embodiment, the space remote controller 401 has a sensor capable of discriminating a motion. Information about the movement of the space remote controller 401 detected through the sensor of the space remote controller 401 is transmitted to the display device 100. [ The display device 100 determines the operation of the spatial remote controller 401 from the information on the motion of the spatial remote controller 401 and calculates the coordinate value of the pointer 402 corresponding thereto.

4 and 5 show an example in which the pointer 402 displayed on the display 180 moves in correspondence with the up, down, left, right, or rotation of the space remote control 401. Fig. The moving speed and moving direction of the pointer 402 may correspond to the moving speed and the moving direction of the space remote controller 401.

In this embodiment, the pointer displayed on the display device 100 is set to move in response to the operation of the space remote controller 401. [ As another example, in response to the operation of the space remote controller 401, a predetermined command may be set to be input to the display device 100. That is, the size of the image displayed on the display device 100 can be enlarged or reduced when the remote controller 401 is moved back and forth. Therefore, the present embodiments are not intended to limit the scope of the present invention.

6 is an internal block diagram of the interface unit of FIG. 1 and the spatial remote controller of FIG.

The space remote controller 401 includes a wireless communication unit 420, a user input unit 430, a sensor unit 440, an output unit 450, a power supply unit 460, a memory 470, (480). ≪ / RTI >

The wireless communication unit 420 transmits and receives signals to and from the display device 100. The spatial remote controller 401 may include an RF module 421 capable of transmitting and receiving signals to and from the interface unit 410 of the display device 100 according to the RF communication standard. The spatial remote controller 401 may include an IR module 423 capable of transmitting and receiving signals to and from the interface unit 410 of the display device 100 according to the IR communication standard.

In this embodiment, the spatial remote controller 401 transmits a signal containing information on the operation of the spatial remote controller 401 to the display device 100 through the RF module 421. In addition, the spatial remote controller 401 can receive the signal transmitted by the display device 100 through the RF module 421. [ In addition, the space remote controller 401 can transmit commands to the display device 100 via the IR module 423, such as power on / off, channel change, volume change, and the like, as needed.

The user input unit 430 may include a keypad or a button. The user can input a command related to the display apparatus 100 to the space remote controller 401 by operating the user input unit 430. [ When the user input unit 430 includes a hard key button, the user can input a command related to the display device 100 to the space remote controller 401 through the push operation of the hard key button. When the user input unit 430 has a touch screen, the user can touch a soft key of the touch screen to input a command related to the display device 100 to the space remote controller 401. [ In addition, the user input unit 430 may include various types of input means such as a scroll key, a jog key, etc., which can be operated by the user, and the present invention does not limit the scope of the present invention.

The sensor unit 440 may include a gyro sensor 441 or an acceleration sensor 443. The gyro sensor 441 can sense information on the operation of the spatial remote controller 401. [ For example, the gyro sensor 441 can sense information about the operation of the spatial remote controller 401 on the basis of the x, y, and z axes. The acceleration sensor 441 can sense information on the moving speed of the spatial remote controller 401 and the like. The output unit 450 may output an image or voice signal corresponding to an operation to the user input unit 430 or a signal transmitted from the display device 100. [ The user can recognize whether the user input unit 430 is operated or whether the display device 100 is controlled through the output unit 450.

For example, the output unit 450 may include an LED module 451 that is turned on when the user input unit 430 is operated or a signal is transmitted to and received from the display device 100 through the wireless communication unit 420, a vibration module 453 An audio output module 455 for outputting audio, or a display module 457 for outputting an image.

The power supply unit 460 supplies power to the space remote controller 401. The power supply unit 460 can reduce power waste by interrupting the power supply when the space remote controller 401 has not moved for a predetermined time. The power supply unit 460 can resume power supply when a predetermined key provided in the space remote controller 401 is operated.

The memory 470 may store various types of application data required for control or operation of the space remote controller 401. If the spatial remote controller 401 transmits and receives a signal wirelessly through the display device 100 and the RF module 421, the spatial remote controller 401 and the display device 100 transmit and receive signals through a predetermined frequency band. The control unit 480 of the spatial remote controller 401 stores information on the frequency band and the like capable of wirelessly transmitting and receiving signals to and from the display device 100 paired with the spatial remote controller 401 in the memory 470, can do.

The control unit 480 controls various matters related to the control of the spatial remote controller 401. The control unit 480 transmits a signal corresponding to a predetermined key operation of the user input unit 430 or a signal corresponding to an operation of the spatial remote controller 401 sensed by the sensor unit 440 to the display device 100 To the interface unit 410 of FIG.

The interface unit 410 of the display apparatus 100 includes a wireless communication unit 420 capable of wirelessly transmitting and receiving a signal to and from the spatial remote controller 401 and a wireless communication unit 420 for calculating coordinate values of a pointer corresponding to the operation of the spatial remote controller 401 And a coordinate value calculation unit 415 that can calculate the coordinate value

The wireless communication unit 420 can wirelessly communicate with the space remote controller 401 through the RF module 421. And can receive signals transmitted by the space remote controller 401 according to the IR communication standard through the RF module 423. [

The coordinate value calculation unit 415 corrects the camera shake or error from the signal corresponding to the operation of the spatial remote controller 401 received via the wireless communication unit 420 and outputs the coordinate value of the pointer 402 to be displayed on the display unit 180 (x, y) can be calculated.

The transmission signal of the spatial remote controller 401 input to the display device 100 through the interface unit 410 is transmitted to the control unit 160 of the display device 100. The controller 160 can determine the information about the operation of the spatial remote controller 401 and the key operation from the signal transmitted from the spatial remote controller 401 and control the display device 100 in accordance therewith.

A block diagram of the spatial remote controller 401 among the display device 100 and the remote control device 200 shown in FIGS. 1 and 6 is a block diagram for an embodiment of the present invention. Each component of the block diagram can be integrated, added, or omitted according to specifications of the display device 100, the spatial remote controller 401 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.

FIG. 7 is a diagram illustrating an example of a screen displayed according to the operation of the channel browsing unit of FIG. 3. Referring to FIG.

7, a thumbnail image screen (channel browser) 700 including a thumbnail image corresponding to a broadcast signal image of a received channel is displayed on the display 180 ). At this time, a "video channel list" may be displayed at the upper part of the display unit 180. [ On the other hand, in the figure, the thumbnail image is displayed over the entire area of the display unit 180, and the entire view function is performed.

As described above, by displaying the thumbnail image screen 700 including a plurality of thumbnail images on the display unit 180, the user can intuitively know contents broadcasted on other channels.

On the other hand, the thumbnail image screen 700 displayed on the display unit 180 may further include an edit menu based on the displayed thumbnail image. The editing menu includes, as shown in the figure, a "lock" item for performing a lock function so that a selected thumbnail image can not be edited, an "edit" item for editing a selected thumbnail image, A " next "item for displaying a next thumbnail image other than the displayed thumbnail image, and a" next " item for displaying a previous thumbnail image other than the displayed thumbnail image, Quot; exit "and the like.

When a thumbnail image screen 700 is displayed on the display unit 180 as shown in FIG. 7, when one of the thumbnail images is selected, the broadcast signal image of the channel corresponding to the selected thumbnail image is displayed on the display unit 180 .

When a thumbnail image screen 700 is displayed on the display unit 180 as shown in FIG. 7, when a certain thumbnail image is focused, the focused thumbnail image is displayed on a cursor display, a pointer display, a highlight display, And can be displayed by focusing. In addition, when focused, the corresponding program information may be displayed.

5, when a thumbnail image screen 700 is displayed on the display unit 180 and there is an edit command, the broadcast signal image corresponding to the selected thumbnail image is referred to as "preference registration", "deletion registration", " Lock Registration "and so on.

7, the thumbnail image screen 700 may be displayed on the display unit 180 including a thumbnail image registered in advance, and may be displayed on the display unit 180 at least among the brightness, contrast, fade, and transparency of the thumbnail image By changing one, it can be displayed separately from other thumbnail images.

7, when a thumbnail image screen 700 is displayed on the display unit 180 and there is a next screen view or a previous screen view command, the next or previous screen is dragged, scrolled, or rotated three-dimensionally It can also be displayed.

When a thumbnail image screen 700 is displayed on the display unit 180 as shown in FIG. 7, when a cursor or a pointer is moved, a cursor or a pointer is moved in accordance with the upward, .

The thumbnail image is displayed over the entire area of the display unit 180. However, the present invention is not limited to this, and the thumbnail image may be displayed on another area of the display unit 180 in a state in which a predetermined selected screen is displayed on the display unit 180 It is also possible to display a thumbnail screen including a thumbnail image.

On the other hand, the thumbnail image screen 700 includes a menu item called channel alignment, and the user can change the display order of the thumbnail images included in the thumbnail image screen 700. [

8 is a diagram illustrating an example of a channel sorting selection screen formed by an embodiment of the present invention.

8, the channel alignment selection screen 800 includes a channel number, a preferred channel, a recent viewing channel, a deletion channel, and a surrounding environment 810. [ In particular, the peripheral environment 810 is an item for changing the sort order of the thumbnail images displayed on the thumbnail image screen 700 according to the ambient illuminance level sensed by the sensing unit 190.

In order to do this, the entire surrounding illuminance level should first be divided into detailed areas, and a preferred channel corresponding to each of the divided areas should be set.

For example, the entire surrounding illumination level (0 to 255) may be divided into two areas (0 to 128, 129 to 255), and a preferred channel may be set for each of the divided areas. Accordingly, the controller 160 can identify a favorite channel corresponding to the currently sensed ambient illuminance level, and provide a thumbnail image screen in which thumbnails corresponding to the identified preferred channels are sorted in priority. In addition, the genre information may be set instead of the channel information. That is, when a sports genre is set in the first area (0 to 128), the controller 160 controls the display of the thumbnail image of the channel that broadcasts the sports genre program when the illuminance level corresponding to the first area is sensed The thumbnail image of the channel that broadcasts another genre program is preferentially displayed.

That is, for example, when the current ambient illumination level is 220 and the preferred channels corresponding to 220 are DTV 10-1, CADTV 30-1, CADTV 35-1 and TV 13, the controller 160 controls the thumbnail picture Thumbnail images of the DTV 10-1, CADTV 30-1, CADTV 35-1, and TV 13 on the screen can be provided in priority order to thumbnail images of other channels. If the current ambient illumination level is 220, the genre information corresponding to the 220 is sports, and the channel in which the current sports genre is broadcast is the DTV 10-1, the CADTV 30-1, the CADTV 35-1, and the TV 13, The control unit 160 allows the thumbnail images of the DTV 10-1, the CADTV 30-1, the CADTV 35-1, and the TV 13 to be provided on the thumbnail image screen in priority order to the thumbnail images of the other channels on the thumbnail image screen.

9, the controller 160 may display thumbnails of the favorite channels (DTV 10-1, CADTV 30-1, CADTV 35-1, and TV 13) corresponding to the ambient illuminance levels rather than thumbnail images of other channels So that a thumbnail image screen 900 in which images are preferentially displayed is provided. That is, the controller 160 places the thumbnail image position of the favorite channel corresponding to the ambient illumination level before the thumbnail image position of the other channel.

At this time, the controller 160 may display a thumbnail image corresponding to the ambient illuminance level on the thumbnail image screen 900 and a thumbnail image of another channel. That is, the border of the thumbnail image corresponding to the ambient illuminance level is compared with the border of another thumbnail image, or displayed with different colors, so that the user can easily distinguish the other channel and the preferred channel.

 Also, as shown in FIG. 10, the controller 160 may control a thumbnail image screen 1000 including only a thumbnail image corresponding to the ambient illumination level to be displayed.

That is, the controller 160 extracts only the thumbnail image of the favorite channel corresponding to the currently sensed ambient illuminance level, and displays the thumbnail image screen 100 including only the extracted thumbnail image.

As described above, according to the embodiment of the present invention, the channel information included in the channel browser is sorted according to the surrounding environment, thereby improving the user satisfaction by providing the channel browser sorted in the order preferred by the user.

11 is a flowchart illustrating a method of providing a channel browser of a display apparatus according to the first embodiment of the present invention.

Referring to the drawings, a plurality of thumbnail images are generated based on input signals (S100). The input signal may be a broadcast signal or an external input signal. The channel browsing processing unit 170 generates a plurality of thumbnail images from the inputted broadcast signal in accordance with the input of the channel browser viewing command.

Next, the controller 160 determines whether there is an error in the generated thumbnail image (S110). The control unit 160, particularly the error detector 220, can determine whether the thumbnail image is erroneous or not. For example, at least one of the size information, the syntax information, the checksum information, the continuous information, and the content information of the thumbnail image may be checked to determine whether the thumbnail image is erroneous have.

Next, if there is an error in the generated thumbnail image, the corresponding thumbnail image is removed (S120). The error thumbnail image can be removed from the thumbnail list, and the update can be stopped accordingly. On the other hand, if an error occurs in the update process after the generated thumbnail image, it is also possible to maintain the original thumbnail image that has not been updated in the thumbnail list.

Next, if there is no error in the generated thumbnail image, a thumbnail image screen including at least a part of the generated thumbnail image is displayed on the display unit 180 (S130). When a thumbnail image is generated for all the channels as shown in FIG. 7, the thumbnail image is displayed on the display unit 180 only to the number that can be included in the thumbnail list. For example, the number may be 25, as shown in FIG.

In step S140, the controller 160 determines whether a channel alignment item according to the surrounding environment is selected in a state that the thumbnail image screen is displayed. Here, the channel alignment item selection can be performed by selecting the 'channel alignment' item existing in the thumbnail image screen and then selecting the 'surrounding environment' item in the submenu screen.

In step S150, the controller 160 determines preferred channel information corresponding to the ambient illuminance level sensed by the sensing unit 190 when a channel alignment item according to the surrounding environment is selected. Here, the information corresponding to the ambient illuminance level may be genre information other than the preferred channel information as described above.

When the preferred channel information is confirmed, the controller 160 changes the sort order of the thumbnail images included in the thumbnail image screen so that the thumbnail image of the determined preferred channel is displayed prior to the thumbnail images of the other channels (S160 ).

Then, the controller 160 displays a thumbnail image screen in which the sort order of the thumbnail images is changed (S170). At this time, the thumbnail image of the favorite channel existing on the thumbnail image screen is displayed separately from the thumbnail image of the other channel.

12 is a flowchart illustrating a method of providing a channel browser of a display apparatus according to a second embodiment of the present invention.

Referring to the drawings, a plurality of thumbnail images are generated based on input signals (S200). The input signal may be a broadcast signal or an external input signal. The channel browsing processor 170 generates a plurality of thumbnail images from the inputted broadcast signals in accordance with the input of the channel browser view command.

Next, the controller 160 determines whether there is an error in the generated thumbnail image (S210). The control unit 160, particularly the error detector 220, can determine whether the thumbnail image is erroneous or not. For example, at least one of the size information, the syntax information, the checksum information, the continuous information, and the content information of the thumbnail image may be checked to determine whether the thumbnail image is erroneous have.

Next, if there is an error in the generated thumbnail image, the corresponding thumbnail image is removed (S220). The error thumbnail image can be removed from the thumbnail list, and the update can be stopped accordingly. On the other hand, if an error occurs in the update process after the generated thumbnail image, it is also possible to maintain the original thumbnail image that has not been updated in the thumbnail list.

Next, if there is no error in the generated thumbnail image, a thumbnail image screen including at least a part of the generated thumbnail image is displayed on the display unit 180 (S230). When a thumbnail image is generated for all the channels as shown in FIG. 7, the thumbnail image is displayed on the display unit 180 only to the number that can be included in the thumbnail list. For example, the number may be 25, as shown in FIG.

In step S240, the controller 160 determines whether a channel alignment item according to the surrounding environment is selected in the state that the thumbnail image screen is displayed. Here, the channel alignment item selection can be performed by selecting the 'channel alignment' item existing in the thumbnail image screen and then selecting the 'surrounding environment' item in the submenu screen.

In step S250, the controller 160 determines preferred channel information corresponding to the ambient illuminance level sensed by the sensing unit 190 when the channel alignment item according to the surrounding environment is selected. Here, the information corresponding to the ambient illuminance level may be genre information other than the preferred channel information as described above.

In step S260, the controller 160 deletes a thumbnail image of another channel except for the thumbnail image of the identified preferred channel on the displayed thumbnail image screen.

Accordingly, the controller 160 displays a thumbnail image screen in which a thumbnail image of another channel other than the thumbnail image of the preferred channel is deleted (S270). That is, the controller 160 displays a thumbnail image screen including only the thumbnail image of the preferred channel.

According to the embodiment of the present invention, the channel information included in the channel browser is sorted according to the surrounding environment, thereby improving the user satisfaction by providing the channel browser arranged in the order preferred by the user.

1 is an internal block diagram of a display device according to an embodiment of the present invention;

2 is a simplified block diagram of the inside of the control unit of Fig.

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

4 and 5 are views showing an example of the remote control device of FIG. 1;

6 is a view showing a detailed configuration of the remote control device of FIG.

7 to 10 are diagrams for explaining a channel browser formed by an embodiment of the present invention;

FIG. 11 is a flowchart illustrating a method of providing a channel browser of a display apparatus according to a first embodiment of the present invention.

FIG. 12 is a flowchart illustrating a method of providing a channel browser of a display device according to a first embodiment of the present invention.

Claims (14)

Generating a thumbnail image based on a broadcast signal received via at least one channel; Displaying a channel browser including at least a portion of the generated thumbnail images; Storing preference channel information set according to the ambient illumination level, The thumbnail images included in the channel browser are arranged according to a surrounding viewing environment, Wherein the surrounding viewing environment corresponds to a surrounding illuminance level. delete delete The method according to claim 1, Wherein the thumbnail image of the favorite channel set in accordance with the current ambient illumination level is preferentially displayed in the channel browser. The method according to claim 1, Wherein the thumbnail image of the preferred channel included in the channel browser is displayed separately from the thumbnail image of the other channel. The method according to claim 1, Wherein the channel browser includes only a thumbnail image of a favorite channel currently set in accordance with a surrounding illuminance level. The method according to claim 1, Wherein the preference channel set according to the ambient illumination level corresponds to genre information of the program. In the display device, A channel browsing processor for generating a channel browser using a thumbnail image based on an input signal; A display unit for displaying a channel browser generated by the channel browsing unit; And A controller for aligning a thumbnail image included in the channel browser according to a predetermined condition; A sensing unit for sensing an ambient illuminance level of the display device; And And a memory unit for storing preference channel information corresponding to a predetermined ambient illuminance level, Wherein the controller arranges the thumbnail image according to a surrounding environment in which the display device is installed, Wherein the ambient environment corresponds to the ambient illuminance level sensed by the sensing unit. delete delete 9. The method of claim 8, Wherein the control unit confirms the preference channel information according to the perceived ambient illumination level by the sensing unit and controls the thumbnail image corresponding to the preference channel information to be preferentially displayed on the channel browser. 12. The method of claim 11, Wherein the control unit processes the thumbnail image corresponding to the preference channel information on the channel browser so as to be distinguished from the thumbnail image of the other channel. 9. The method of claim 8, Wherein the control unit confirms the preferred channel information according to the ambient illumination level sensed by the sensing unit and controls only the thumbnail image corresponding to the determined preferred channel information to be included in the channel browser. 9. The method of claim 8, Further comprising a tuner for receiving a broadcast signal of a selected channel, Wherein the input signal is a broadcast signal received through the tuner.

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