KR20140142589A - Image display device and operation method of the image display device - Google Patents

Abstract

Disclosed are an image display device and an operating method thereof. According to embodiments of the present invention, the image display device includes: a wireless communication unit which accesses an external input device; a sensing unit which senses the first gesture input of a user who exists within a predetermined range based on a main body; and a control unit which controls a broadcast channel to be changed based on conditions corresponding to the sensed first gesture input and direction information included in a received signal if the first gesture input is sensed and a signal corresponding to a second gesture input is received from the accessed external input device within preset time in a broadcast mode.

Description

TECHNICAL FIELD [0001] The present invention relates to an image display apparatus and an image display apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display apparatus and a method of operating the image display apparatus, and more particularly, to an image display apparatus and a method of operating the image display apparatus capable of recognizing a user's gesture input.

The image display device includes both a device for receiving and displaying a broadcast, a device for recording and reproducing a moving image, and a device for recording and reproducing audio. Such a video display device may be, for example, a television, a computer monitor, a projector, a tablet, a navigation device, a digital broadcast receiving device (Digital Television), or the like.

Such a video display device has a variety of functions, so that it can be used as a multimedia player having a complex function such as photographing, video shooting, game, broadcast reception in addition to broadcasting, music or video file playback function . Furthermore, in recent years, video display devices have been implemented as smart devices (for example, smart television). Accordingly, the video display device may operate in conjunction with a mobile terminal or a computer as well as the Internet. In addition, the image display device receives digital broadcasting and takes charge of functions of a server in a home network environment or a ubiquitous environment.

Meanwhile, in recent years, when viewing a broadcast through such a video display device, there have been several hundreds of channels that can be selected by the user. Accordingly, it has become more and more difficult for a user to easily and quickly move to a desired channel in a method of sequentially increasing or decreasing channel numbers by using a key provided in the video display device or an external input device connected to the video display device.

Embodiments of the present invention provide an operation method of an image display apparatus and an image display apparatus implemented so that movement to a desired broadcast channel or a broadcast channel belonging to a specific group can be effectively switched through a user's complex gesture input It has its purpose.

An image display apparatus according to an embodiment of the present invention includes a wireless communication unit for connecting to an external input device; A sensing unit for sensing a first gesture input of a user existing within a predetermined range based on the body; In the broadcast mode, when the first gesture input is sensed and a signal corresponding to the second gesture input is received from the connected external input device within a predetermined time, the condition corresponding to the sensed first gesture input and the received And controlling the broadcasting channel to be changed based on the direction information included in the signal.

In one embodiment, the signal corresponding to the second gesture is one of a scroll signal, a pointing signal, and a key input signal, and the controller controls to channel up or down the broadcast channel according to the direction information .

In one embodiment, the controller enters the preferred channel mode in response to the first gesture input being recognized as a predetermined first shape, and changes the broadcast channel in units of pre-registered preferred channels according to the direction information And a control unit.

In one embodiment, when the third gesture input is recognized in the broadcast mode, the control unit registers the broadcast channel corresponding to the screen information currently output to the display unit in the map of the preferred channel, When the fourth gesture input is recognized in a state in which the screen information corresponding to the first gesture input is output to the display unit, the broadcast channel is released from the map of the preferred channel.

In one embodiment, the control unit controls to output a notification corresponding to the generated event when at least one of registration of the preferred channel in the map and release of the preferred channel map occurs.

In one embodiment, the control unit enters a group channel mode based on EPG information in response to the first gesture input recognized as a predetermined second shape, and based on the direction information, classifies And changing the broadcast channel in units of the group.

In one embodiment, in response to the recognition that the first gesture indicates a specific number, the control unit detects a broadcast channel representing a group or a recognized number band corresponding to the recognized number, The broadcast channel is changed in the group or the broadcast channel is changed in units of the recognized number band.

In one embodiment, the controller determines whether a predetermined initial gesture input is detected before the first gesture input is sensed, and determines whether the first gesture input is recognized according to a determination result.

In one embodiment, the control unit displays the first icon corresponding to the first gesture input in one area of the display unit when the first gesture input is recognized, and displays the first icon corresponding to the second gesture input within a predetermined time When the signal is received and recognized, the first icon is changed to the second icon and displayed.

According to another aspect of the present invention, there is provided a video display device including: a wireless communication unit connected to an external input device; A sensing unit sensing a voice command of the user; In the broadcast mode, when the voice command is detected and a signal corresponding to the second gesture is received from the connected external input device within a predetermined time, a condition corresponding to the detected voice command and a direction And a control unit for controlling to change the broadcast channel based on the information.

In one embodiment, if the voice command is a control command for entering the preferred channel mode, the control unit controls the broadcasting channel to be changed in units of pre-registered preferred channels according to the direction information.

In one embodiment, if the voice command is a control command for entering the group channel mode, the control unit controls to change the broadcast channel in units of groups classified on the basis of the EPG information based on the direction information .

In one embodiment, when the voice command is recognized as a specific number of voice, the control unit detects a broadcast channel representing a group corresponding to the recognized number or a recognized number band, and based on the direction information, Or to change the broadcast channel while skipping in the numeric band unit.

According to another aspect of the present invention, there is provided a method of operating a video display device, including: sensing a first gesture input of a user within a predetermined range based on a main body; Receiving, in the broadcast mode, a signal corresponding to a second gesture input from an external input device in which the first gesture input is recognized and connected within a predetermined time; And changing a broadcast channel based on the condition corresponding to the first gesture input and the direction information included in the received signal.

Therefore, according to the method of operating the image display apparatus and the image display apparatus according to the embodiment of the present invention, movement to a desired broadcast channel or a broadcast channel belonging to a specific group and a channel movement unit can be effectively performed through a user's complex gesture input Thus providing user convenience.

In addition, according to the method of operating the image display apparatus and the image display apparatus according to the embodiment of the present invention, by using the input by the user operation and the input using the external input apparatus when the channel is moved, Intuitive control is possible, and the key to the external input device can be more easily configured.

1 is a block diagram showing an image display apparatus and an external input apparatus according to the present invention.
FIG. 2 is a block diagram showing the external input device of FIG. 1 in detail.
FIG. 3 is a conceptual diagram showing the mutual operation of the video display apparatus and the external input apparatus according to the present invention.
4 is a flowchart illustrating an operation of a video display device according to an exemplary embodiment of the present invention.
5 is a conceptual diagram for explaining a complex gesture input for switching a broadcast channel on a per-preferred channel basis, according to an embodiment of the present invention.
6A and 6B are conceptual diagrams for explaining how to register or release a current broadcast channel as a favorite channel through a gesture input according to an embodiment of the present invention.
FIG. 7 is a conceptual diagram for explaining a complex gesture input for switching a broadcast channel in a group channel unit according to an embodiment of the present invention. Referring to FIG.
8 is a conceptual diagram for explaining a complex gesture input for switching a broadcast channel in a specific number band unit according to an embodiment of the present invention.
9 is a conceptual diagram for explaining a start gesture related to a complex gesture input for channel switching and a method for indicating whether or not a complex gesture input is recognized according to an embodiment of the present invention.
FIG. 10 is a conceptual diagram for explaining a case where a composite gesture input for channel switching is performed by voice commands of a user according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the technical idea of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention, parts not related to the description are omitted, and like parts are denoted by similar reference numerals throughout the specification.

In this specification, an image display apparatus includes both a device for receiving and displaying a broadcast, a device for recording and reproducing a moving image, and a device for recording and reproducing audio.

1 is a block diagram showing an image display apparatus 100 and an external input apparatus 200 according to the present invention. The video display apparatus 100 includes a tuner 110, a demodulator 120, a signal input / output unit 130, an interface unit 140, a control unit 150, a storage unit 160, a display unit 170, And an output unit 180. The external input device 200 may be a separate device from the image display device 100 or may be included as a component of the image display device 100.

1, a tuner 110 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 RF broadcast signal into an intermediate frequency signal or a baseband image / Convert to voice signal. For example, if the RF broadcast signal is a digital broadcast signal, the tuner 110 converts the RF broadcast signal into a digital IF signal (DIF). On the other hand, if the RF broadcast signal is an analog broadcast signal, the tuner 110 converts the RF broadcast signal into an analog baseband video / audio signal (CVBS / SIF). As described above, the tuner 110 may be a hybrid tuner capable of processing a digital broadcasting signal and an analog broadcasting signal.

The digital IF signal DIF output from the tuner 110 is input to the demodulator 120 and the analog baseband video / audio signal CVBS / SIF output from the tuner 110 is input to the controller 160 .

The tuner 110 can receive an RF broadcast signal of a single carrier according to an Advanced Television Systems Committee (ATSC) scheme or an RF broadcast signal of a plurality of carriers according to a DVB (Digital Video Broadcasting) scheme.

Although one tuner 110 is shown in the drawing, the present invention is not limited thereto. The video display device 100 may include a plurality of tuners, for example, first and second tuners. In this case, the first tuner may receive the first RF broadcast signal corresponding to the broadcast channel selected by the user, and the second tuner may sequentially or periodically receive the second RF broadcast signal corresponding to the previously stored broadcast channel . The second tuner can convert the RF broadcast signal into a digital IF signal (DIF) or an analog baseband video / audio signal (CVBS / SIF) in the same manner as the first tuner.

The demodulator 120 receives the converted digital IF signal DIF from the tuner 110 and performs a demodulation operation.

If the digital IF signal DIF output from the tuner 110 is of the ATSC scheme, the demodulation unit 120 performs 8-VSB (8-Vestigal Side Band) demodulation. 8-VSB (8-Vestigal Side Band) demodulation is a residual sideband modulation of a single carrier amplitude modulation using the NTSC (National Television System Committee) frequency band. At this time, the demodulator 120 may perform channel decoding such as trellis decoding, de-interleaving, and Reed-Solomon decoding. For this, the demodulator 120 may include a trellis decoder, a de-interleaver, and a Reed Solomon decoder.

If the digital IF signal DIF output from the tuner 110 is of the DVB scheme, the demodulator 120 performs COFDMA (Coded Orthogonal Frequency Division Modulation) demodulation. At this time, the demodulator 120 may perform channel decoding such as convolutional decoding, deinterleaving, and Reed-Solomon decoding. For this, the demodulator 120 may include a convolution decoder, a deinterleaver, and a Reed-Solomon decoder.

The demodulation unit 120 may perform the demodulation and channel decoding and output the stream signal TS. At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed. For example, the stream signal TS may be an MPEG-2 TS (Transprt Stream) multiplexed with an MPEG-2 standard video signal, a Dolby AC-3 standard audio signal, or the like. Here, the MPEG-2 TS may include a header of 4 bytes and a payload of 184 bytes.

The signal output from the demodulator 120 is input to the controller 170, and demultiplexing and video / audio signal processing can be performed.

The signal input / output unit 130 may be an external device such as a digital versatile disk (DVD), a Blu ray, a game device, a camera, a camcorder, a computer (notebook), a set- And is wirelessly connected to perform signal input and output operations. For this, an A / V input / output unit for connection with a wired network and a wireless communication unit for connection with a wireless network may be included.

The A / V I / O section is composed of an Ethernet terminal, a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, an S- video terminal (analog), a DVI (digital visual interface) terminal, , A Mobile High-definition Link (MHL) terminal, an RGB terminal, a D-SUB terminal, an IEEE 1394 terminal, a SPDIF terminal, and a liquid HD terminal. The digital signal input through these terminals may be transmitted to the control unit 150. At this time, the analog signal inputted through the CVBS terminal and the S-video terminal may be converted into a digital signal through an analog-digital converter (not shown) and transmitted to the controller 150.

The wireless communication unit can perform a wireless Internet connection. For example, the wireless communication unit performs wireless Internet access using a WLAN (Wi-Fi), a Wibro (wireless broadband), a Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) can do. In addition, the wireless communication unit can perform short-range wireless communication with other electronic devices. For example, the wireless communication unit can perform near field wireless communication using Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee have.

The signal input / output unit 130 can access a predetermined web page and transmit / receive data to / from the server through a wired / wireless network. In addition, the signal input / output unit 130 can transmit content or data provided by a content provider or a network operator, , An advertisement, a game, a VOD, a broadcasting signal, and related information. The signal input / output unit 130 can receive update information and an update file of the firmware provided by the network operator through the wired / wireless network, and can select and receive a desired application among the applications open to the public have.

The signal input / output unit 130 may transmit a video signal, an audio signal, and a data signal provided from the external device to the control unit 150. Also, the signal input / output unit 130 may transmit a video signal, a voice signal, and a data signal of various media files stored in an external storage device such as a memory device, a hard disk, etc. to the control unit 150. Also, the signal input / output unit 130 can transmit the video signal, audio signal, and data signal processed by the controller 150 to the external device or other external device.

More specifically, the signal input / output unit 130 may be connected to a set-top box, for example, a set-top box for IPTV (Internet Protocol TV) through at least one of the various terminals described above to perform signal input and output operations . In addition, the signal input / output unit 130 can transmit a video signal, a voice signal, and a data signal processed by the settop box for IPTV to the control unit 150 so that bidirectional communication can be performed, and the signals processed by the control unit 150 It can also be passed back to the set-top box for IPTV. In this case, the IPTV may include ADSL-TV, VDSL-TV, FTTH-TV, and the like which are classified according to the transmission network, and may include TV over DSL, Video over DSL, TV over IP (TVIP) An Internet TV capable of accessing the Internet, and a full browsing TV.

The digital signal output from the signal input / output unit 130 may also include a stream signal TS. Such a stream signal TS may be a signal in which a video signal, an audio signal, and a data signal are multiplexed as described above.

The interface unit 140 may transmit a signal input by the user to the control unit 150 or may transmit the signal transmitted from the control unit 150 to the user.

The interface unit 140 may transmit a user input signal to the controller 150, such as a power key, a channel key, a volume key, a setting key, and the like. In addition, the interface unit 140 may include a sensor unit (not shown) for sensing a user's gesture, a user's position, a touch, and the like. To this end, the sensor unit may include a touch sensor, a voice sensor, a position sensor, a motion sensor, a gyro sensor, and the like. In this case, the interface unit 140 may transmit the input signal input from the sensor unit to the controller 150 or may transmit the signal from the controller 150 to the sensor unit.

The interface unit 140 receives an input signal input by the user for power control of the external input device 200, for example, power supply control from the spatial remote controller, channel selection, screen setting, or the like, To the external input device (200). At this time, the interface unit 140 and the external input device 200 may be connected by wire or wirelessly.

In addition, the interface unit 140 can receive personal information from the external input device 200 and / or receive web server information that is being accessed through such personal information. For example, when the mobile terminal accesses the external input device 200 within a predetermined distance to perform near field communication (NFC), the external input device 200 can receive the personal information stored in the mobile terminal . Here, the personal information may be information necessary for logging into a predetermined account to access the electronic device or use the service.

The control unit 150 controls the overall operation of the image display apparatus 100. The control unit 150 demultiplexes the stream signal TS received through the tuner 110, the demodulator 120, and / or the signal input / output unit 130, processes the demultiplexed signals, It is possible to generate and output signals for video or audio output. For example, the controller 150 may control the tuner 110 to tune an RF broadcast signal corresponding to a channel selected by the user or a previously stored channel.

The video signal processed by the controller 150 is transmitted to the display unit 170 and can output an image corresponding to the resolution video signal and the audio signal processed by the controller 150 is transmitted to the audio output unit 180 So that the sound can be outputted. The video signal and / or audio signal processed by the controller 150 may be input to an output device of an external device through the signal input /

For example, the controller 150 demultiplexes the stream signal TS or processes the demultiplexed signals to generate and output a signal for video or audio output. Although not shown in the figure, the controller 150 may include a demultiplexer, An OSD (On Screen Display) generating unit, a voice processing unit, a data processing unit, a channel browsing processing unit, and the like.

A demultiplexer (not shown) demultiplexes the input stream signal TS. For example, when the MPEG-2 stream signal TS is input, the demultiplexing unit demultiplexes the MPEG-2 stream signal TS into a video signal, a voice signal, and a data signal, respectively. Here, the stream signal TS may be output from the tuner 110, the demodulator 120, and / or the signal input / output 130, as described above.

The image processing unit (not shown) may perform image processing, for example, decoding, of the demultiplexed image signal. More specifically, the image processing unit decodes an MPEG-2 standard-encoded video signal using an MPEG-2 decoder, and outputs a DMB (Digital Multimedia Broadcasting) or DVB-H (Digital Video Broadcast- It is possible to decode the encoded video signal of the H.264 standard according to the handheld method. In addition, the image processing unit may perform image processing such that the brightness, tint, and color of the image signal are adjusted. In addition, the image processing unit may scaling the demultiplexed image signal so that the demultiplexed image signal can be output from the display unit 170. [ The image signal processed by the image processing unit may be transmitted to the display unit 170 or to an external output device (not shown) through an external output terminal.

The OSD generator (not shown) may generate an OSD signal according to user input or by itself. In more detail, the OSD generation unit may display various information on a screen of the display unit 170 based on at least one of an image signal and a data signal or an input signal received from the external input apparatus 200, ) Or text (Text) can be generated. The generated OSD signal may include various data such as a user interface screen of the video display device 100, various menu screens, a widget, an icon, and a pointer corresponding to a pointing signal transmitted from the external input device 200. In addition, the generated OSD signal may include a 2D object or a 3D object.

The control unit 150 may mix the OSD signal generated by the OSD generation unit and the decoded video signal processed by the image processing unit. The mixed video signal can change the frame rate of an image through a frame rate converter (FRC). In addition, the mixed video signal may be output by changing the format of a video signal through a formatter, or may separate a 2D video signal and a 3D video signal for 3D video display or may convert a 2D video signal into a 3D video signal .

The voice processing unit (not shown) can perform a voice signal, for example, decryption on the demultiplexed voice signal. More specifically, the voice processing unit can decode an encoded voice signal of the MPEG-2 standard using an MPEG-2 decoder and use the MPEG 4 decoder to perform a bit sliced arithmetic coding (MPEG4) And decodes the encoded audio signal of the AAC (Advanced Audio Codec) standard of MPEG 2 according to the satellite DMB method or DVB-H (Digital Video Broadcast-Handheld) method using an AAC decoder . Further, the voice processing unit can process a base, a treble, a volume control, and the like. The voice signal processed in the voice processing unit may be transmitted to the audio output unit 180, for example, a speaker, or to an external output device.

A data processing unit (not shown) may perform data processing, for example, decoding, on the demultiplexed data signal. Here, the data signal may include electronic program guide (EPG) information including broadcast information such as a start time and an end time of a broadcast program broadcasted on each channel. The EPG information may include, for example, ATSC-PSIP (ATSC-Program and System Information Protocol) information in the ATSC scheme and DVB-Service Information (DVB-SI) information in the DVB scheme. Here, the ATSC-PSIP information or the DVB-SI information may be included in the header (4 bytes) of the MPEG-2 stream signal TS.

The channel browsing processor (not shown) receives the stream signal TS output from the demodulator 120 or the stream signal TS output from the signal input / output unit 130, extracts an image therefrom, and generates a thumbnail image . The generated thumbnail image can be directly or encoded and input to the controller 150. In such a case, the controller 150 may display a thumbnail list having a plurality of thumbnail images on the display unit 170 using the input thumbnail images. At this time, the thumbnail image in the thumbnail list may be displayed in the entire area of the display unit 170 or in a part of the display unit 170 in a simple view mode. In addition, the thumbnail images in the thumbnail list can be sequentially updated.

Meanwhile, the controller 150 may perform signal processing on the analog baseband video / audio signal (CVBS / SIF). For example, the analog baseband video / audio signal CVBS / SIF input to the controller 150 may be an analog baseband video / audio signal output from the tuner 110 or the signal input / output unit 130. The control unit 150 processes the input analog baseband video / audio signal CVBS / SIF, displays the processed video signal through the display unit 170, and outputs the processed audio signal to the audio output unit 180).

The control unit 150 may control the operation of the image display apparatus 100 based on a user command or an internal program input through the signal input / output unit 130 or the interface unit 140. More specifically, the control unit 150 receives device information of a nearby external device in the vicinity of the video display device 100, remote controllable channel information of another external device, received from the signal input / output unit 130 or the interface unit 140, Based on the personal information from the external input device 200, based on the frequency information or the code information, determines whether or not each external device is connected, and controls the display 170 to display an object indicating that the external device is connected can do.

In addition, the controller 150 may display at least one object displayed on the display unit 170 as a 3D object. Here, the object may be at least one of a connected web screen (newspaper, magazine, etc.), an EPG (Electronic Program Guide), various menus, widgets, icons, still images, moving images, and text.

In addition, the control unit 150 may control the gesture of the user by combining the image photographed by the photographing unit (not shown), the sensed signal from the sensing unit (not shown), or the input signal transmitted from the external input device 200, Can be detected.

Further, the control unit 150 can recognize the position of the user based on the image photographed from the photographing unit (not shown). For example, the distance (z-axis coordinate) between the user and the image display apparatus 100 can be grasped, and the x-axis coordinate and y-axis coordinate in the display unit 170 corresponding to the user position can be grasped .

The storage unit 160 may store a program for signal processing and control of the control unit 150 and may store programs for controlling a predetermined broadcast channel through a channel memory function such as a video signal, Information and the like. The storage unit 160 may be a flash memory, a hard disk, a multimedia card micro type, a card type memory (for example, SD or XD memory), a random access (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM) Or at least one storage medium.

In addition, the storage unit 160 may store IR format key codes for controlling other external devices, and may store an IR format key database of a plurality of external devices.

The display unit 170 converts a video signal, a data signal, an OSD signal processed by the controller 150 or a video signal, a data signal, a control signal, and the like received from the signal input / output unit 130 or the interface unit 140 into RGB Signal to generate a driving signal, thereby outputting an image. The display unit 170 may be a plasma display panel (PDP), a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT-LCD), an organic light emitting diode Light emitting diodes (OLED), flexible displays, 3D displays (3D displays), and electronic ink displays (e-ink displays)

For example, when the display unit 170 is a 3D display, the display unit 170 may be implemented by an additional display method or a single display method for viewing 3D images. The single display method can implement a 3D image without a separate display, for example, without a glass or the like, and the display unit 170 can be realized by a method such as a lenticular method, a parallax barrier, Can be applied. In addition, the additional display method can implement a 3D image using a 3D viewing apparatus in addition to the display unit 170. For example, a head-mounted display (HND) type, a glasses type, or the like can be applied.

In addition, when the display unit 170 is implemented as a touch screen having a touch sensor, it may perform an input device function in addition to an output device.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display unit 170 or a capacitance generated in a specific portion of the display unit 170 into an electrical input signal. The touch sensor can be configured to detect not only the position and area where the touch object is touched on the touch sensor but also the pressure at the time of touch. Here, the touch object may be a finger, a touch pen, a stylus pen, a pointer, or the like as an object to which a touch is applied to the touch sensor. If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and then transmits the corresponding data to the controller. Thus, the control unit 150 can know which area of the display unit 170 is touched or the like.

The audio output unit 180 receives the audio signal processed by the control unit 150, for example, a stereo signal or a 5.1 channel signal, and outputs a sound corresponding thereto. To this end, the audio output unit 180 may be implemented by various types of speakers.

The sensing unit 190 receives an audio signal and / or an image signal from the outside, and can sense the user's gesture using the received signal. For this, a camera (not shown), a microphone (not shown), an infrared sensor (not shown), and the like may be included.

A camera (not shown) photographs a user and generally has one, but two or more cameras may be provided depending on the use environment. The image information photographed through the camera may be input to the controller 150, and the controller 150 may detect the user's gesture based on the photographed image.

A microphone (not shown) may receive a predetermined voice command from the user. The microphone (not shown) may include various noise elimination algorithms for eliminating noise generated when an external acoustic signal is input.

An infrared sensor (not shown) can be used to recognize the user's eyes and track the user's gaze.

In addition, the image display apparatus 100 may include an image communication unit (not shown) including a camera (not shown) and a microphone (not shown). The control unit 150 processes the image information photographed by the camera and the audio information collected by the microphone and transmits the image information to the image communication apparatus of the other party through the signal input / output unit 130 or the interface 140.

A power supply unit (not shown) supplies power to the entire video display device 100. Particularly, it is possible to supply power to a control unit 150 that can be implemented in the form of a system on chip (SOC), a display unit 170 for displaying an image, and an audio output unit 180 for audio output .

To this end, the power supply unit (not shown) may include a converter (not shown) for converting AC power to DC power. On the other hand, for example, when the display unit 170 is implemented as a liquid crystal panel having a plurality of backlight lamps, an inverter (not shown) capable of PWM operation is further provided for driving a variable luminance or dimming You may.

The external input device 200 is connected to the interface 140 via a wired or wireless connection and transmits an input signal generated according to a user input to the interface 140. The external input device 200 may include a remote controller (e.g., a space remote controller), a mouse, a keyboard, a wheel, and the like. The remote controller can transmit an input signal to the interface unit 140 through Bluetooth, RF communication, infrared communication (IR communication), UWB (Ultra Wideband), ZigBee, or the like. When the external input device 200 is implemented with a spatial remote controller, the operation of the main body can be sensed to generate a predetermined input signal.

Meanwhile, the image display apparatus 100 may be implemented as a fixed digital broadcast receiver or a portable digital broadcast receiver.

When the video display device 100 is implemented as a fixed digital broadcast receiver, it is possible to use digital broadcasting of ATSC (8-VSB) using a single carrier, terrestrial DVB-T (COFDM) using a plurality of carriers, Digital broadcasting of an ISDB-T system (BST-OFDM system) in which different broadcasting channels can be used according to a user's authority, and the like.

When the video display apparatus 100 is implemented as a mobile digital broadcasting receiver, the terrestrial DMB type digital broadcasting, the satellite DMB type digital broadcasting, the ATSC-M / H type digital broadcasting, the Digital Video Broadcast-Handheld ) Type digital broadcasting, and a media flow (Media Foward Link Only) type digital broadcasting.

Meanwhile, the video display device 100 may be implemented as a digital broadcast receiver for cable, satellite communication, and IPTV.

Also, the video display device 100 described above can be applied to a mobile terminal. The mobile terminal may be a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC, tablet PCs, ultrabooks, and the like.

When the image display apparatus is used as a mobile terminal, a wireless communication unit may be added in addition to the above-described configuration. The wireless communication unit enables wireless communication between the mobile terminal and the wireless communication system or between the mobile terminal and the network in which the mobile terminal is located.

To this end, the wireless communication unit may include at least one of a broadcast receiving module, a mobile communication module, a wireless Internet module, a short distance communication module, and a location information module.

The broadcast receiving module can receive broadcast signals and / or broadcast-related information from a broadcast management server through a broadcast channel.

Here, the broadcast channel may include a satellite channel, a terrestrial channel, and the like. Here, the broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast-related information, or a server for receiving broadcast signals and / or broadcast-related information generated and transmitted to the terminals. In addition, the broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal .

Here, the broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider, and the broadcast-related information may be provided through a mobile communication network. In addition, the broadcast-related information may exist in various forms. For example, an EPG (Electronic Program Guide) of DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) of Digital Video Broadcast-Handheld (DVB-H).

For example, the broadcast receiving module may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only (DVF-H), a Digital Video Broadcast- , DVB-CBMS (Convergence of Broadcasting and Mobile Service), OMA-BCAST (Open Mobile Alliance-Broadcast), CMMB (China Multimedia Mobile Broadcasting), MBBMS (Mobile Broadcasting Business Management System), ISDB- Terrestrial) or the like can be used to receive a digital broadcast signal. Of course, the broadcast receiving module may be configured to be suitable for other broadcasting systems as well as the digital broadcasting system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module may be stored in a memory.

The mobile communication module transmits and receives radio signals to and from at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The mobile communication module is configured to implement a video communication mode and a voice communication mode. The video call mode refers to a state of talking while viewing a video of the other party, and the voice call mode refers to a state in which a call is made without viewing the other party's video. The mobile communication module is configured to transmit and receive at least one of voice and image to implement a video communication mode and a voice communication mode.

The wireless Internet module is a module for wireless Internet access, and can be embedded in a mobile terminal or externally. Wireless Internet technologies include WLAN (Wireless LAN), WiFi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) GSM, CDMA, WCDMA, Long Term Evolution (LTE), or the like may be used.

The short-range communication module is a module for short-range communication. It is possible to use short range communication technology such as Bluetoot, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), UWB (Ultra Wideband), ZigBee, Near Field Communication (NFC), Wi- Etc. may be used.

The location information module is a module for acquiring the location of the mobile terminal, and representative examples thereof include a Global Position System (GPS) module or a Wireless Fidelity (WiFi) module.

FIG. 2 is a block diagram showing the external input device 200 shown in FIG. 1 in detail. The external input device 200 includes a wireless communication unit 210, a user input unit 220, a sensing unit 230, an output unit 240, a power supply unit 250, a storage unit 260, .

Referring to FIG. 2, the wireless communication unit 210 transmits a signal to the image display apparatus 100 or receives a signal from the image display apparatus 100. For this, the wireless communication unit 210 may include an RF module 211 and an IR module 212. The RF module 211 is connected to the interface unit 140 of the video display device 100 according to the RF communication standard to transmit and receive a signal and the IR module 212 is connected to the interface of the video display device 100 according to the IR communication standard. Receiving unit 140 can transmit and receive signals. For example, the wireless communication unit 210 may transmit a signal including information such as the motion of the external input apparatus 200 to the image display apparatus 100 through the RF module 211.

On the other hand, the external input device 200 further includes an NFC module (not shown) for short-range magnetic field communication with an external device, Server information and the like and transmit the received information to the image display apparatus 100 through the RF module 211 or the IR module 212. [

In addition, the external input device 200 may be connected to the interface unit of the image display device 100 using Bluetooth, infrared (IR) communication, UWB (Ultra Wideband), ZigBee, Near Field Communication (NFC) (140). ≪ / RTI >

The external input device 200 can receive video, audio, or data signals output from the interface unit 140 of the video display device 100. The external input device 200 can display or output audio on the external input device 200 based on the received video, audio, or data signal.

The external input device 200 may also receive device information of other external devices, channel information capable of remotely controlling other external devices, frequency information, code information, and the like from neighboring external devices in the vicinity, Based on the information, a channel, frequency, or code may be assigned to the external device to perform remote control.

The user input unit 220 may include, for example, a keypad, a key button, a touch screen, a scroll key, a jog dial, etc. as input means. The user can input a control command related to the image display apparatus 100 by operating the user input unit 220. [ This control command can be input through, for example, a push operation of the hard key button of the user input unit 200 by the user. In addition, for example, when the user input unit 220 has a touch screen, the command may be entered by the user touching the soft key of the touch screen.

The user input unit 220 may include, for example, an Okay key, a menu key, a direction key, a channel adjustment key, a volume adjustment key, a back key, a home key, have. An OK key (not shown) is available when a menu or item is selected, and a menu key (not shown) is available for displaying a predetermined menu. The four directional keys (not shown) may be used to move the pointer or indicator displayed on the display unit 170 of the image display device 100 up, down, left, or right. The channel adjustment key (not shown) can be used for adjusting the channel up and down, and the volume adjustment key (not shown) can be used for adjusting the volume up and down. Also, a back key (not shown) can be used when moving to a previous screen, and a home key (not shown) can be used when moving to a home screen.

The confirmation key can be implemented by adding a scroll function. For this purpose, the confirmation key may be implemented in the form of a wheel key. That is, when the user pushes the confirmation key up / down or left / right, it can be used as a corresponding menu or item selection. In case of rotating the provided wheel up / down, The screen displayed on the display unit 170 of the display unit 100 may be scrolled or switched to the next list page. For example, when only a part of the screen to be output as a whole screen is displayed on the display unit 170, if the wheel of the confirmation key is scrolled to search the screen of the desired part, Area may be output to the display unit 170. [ As another example, when the list page is displayed on the display unit 170, the previous page or the next page of the current page displayed on the display unit 170 can be displayed by scrolling the wheel of the confirmation key.

Also, by using the scroll function of the confirmation key, it is possible to increase or decrease the channel by the number corresponding to the rotation of the wheel when the broadcast channel is switched, and adjust the volume The output can be made high or the volume can be made small.

In addition, the scroll function of the confirmation key may be realized by a separate key.

The sensing unit 230 may include a gyro sensor 231 and an acceleration sensor 232. The gyro sensor 231 can sense the spatial movement of the external input device 200 on the basis of the x-axis, the y-axis, and the z-axis. The acceleration sensor 232 can sense the moving speed of the external input device 200 or the like.

In addition, the sensing unit 230 may further include a distance measuring sensor, thereby sensing the distance to the display unit 170.

The output unit 240 outputs information corresponding to the operation of the user input unit 220 and information corresponding to the transmission signal of the image display apparatus 100. [ The user can recognize the operation state of the user input unit 220 or the control state of the image display apparatus 100 through the output unit 240. The output unit 240 outputs an LED module 241 that is turned on, a vibration module 242 that generates vibration, and a sound output unit 242 in response to an operation of the user input unit 220 or a signal transmitted and received through the wireless communication unit 210. [ And a display module 244 for outputting an image.

The power supply unit 250 supplies power to various electronic devices of the external input device 200. When the external input device 200 does not move for a predetermined period of time, the power supply unit 250 may reduce power consumption by stopping the power supply. When the predetermined key of the external input device 200 is operated, Can be resumed.

The storage unit 260 may store various programs, applications, frequency band information, and the like related to the control or operation of the external input device 200. In addition, the storage unit 260 may store IR format key codes for controlling other external devices using an IR signal, and may store an IR format key database of a plurality of external devices.

The control unit 270 controls overall matters related to the control of the external input device 200. The control unit 270 can transmit a signal corresponding to a predetermined key operation of the user input unit 220 to the image display apparatus 100 through the communication unit 210. [ The control unit 270 may transmit a signal corresponding to the movement of the external input device 200 sensed by the sensing unit 230 to the image display device 100 through the wireless communication unit 210, 100 can calculate the coordinate value of the pointer corresponding to the movement of the external input device 200. [

FIG. 3 is a conceptual diagram showing the mutual operation of the image display apparatus 100 and the external input apparatus 200 according to the present invention. Here, for the purpose of explanation, a TV receiver is shown as an example of the video display device 100, and a space remote controller is shown as an example of the external input device 200. [

Referring to FIG. 3, the external input apparatus 200 can transmit and receive signals to and from the image display apparatus 100 according to the RF communication standard. A control menu may be displayed on the screen of the video display device 100 in accordance with the control signal of the external input device 200. To this end, the external input device 200 may include a plurality of buttons, and may generate an external input signal according to the operation of the user's button. In addition, the external input apparatus 200 can transmit information about the motion of the external input apparatus 200 sensed through the sensing unit in the 3D space to the image display apparatus 100.

3, in response to the user moving or rotating the external input apparatus 200 up / down, left / right, front / back, or the like, the screen of the image display apparatus 100 displays, on the movement of the external input apparatus 200, The corresponding pointer 101 is displayed. In the external input device 200, the pointer 101 is moved according to the movement in the 3D space and is displayed on the screen of the image display device 100, so that it can be called a space remote controller.

Information on the motion of the external input device 200 sensed by the sensing unit of the external input device 200 is transmitted to the image display device 100. [ Then, the image display apparatus 100 can calculate the X and Y coordinates of the pointer from the information on the motion of the external input apparatus 200. [ The image display apparatus 100 can display the pointer 101 corresponding to the calculated coordinates.

If the user moves the external input device 200 away from the screen of the video display device 100 while pressing the specific button provided on the external input device 200, (Zoomed out) and enlarged (zoomed out) can be displayed on the screen. On the other hand, when the user moves the external input device 200 closer to the screen of the video display device 100, the selected area in the screen corresponding to the pointer 101 displayed on the screen is zoomed out (zoomed in) ) Can be displayed.

On the other hand, when the specific button provided on the external input device 200 is pressed, the recognition of the upward / downward and left / right movement of the external input device 200 can be excluded. That is, when the external input apparatus 200 moves away from or approaches the screen of the image display apparatus 100, only the forward / backward movement can be recognized without recognizing the upward, downward, leftward, and rightward movement.

In addition, depending on the moving speed and / or the moving direction of the external input device 200, the moving speed of the pointer 101 displayed on the screen of the image display device 100, the moving direction, have. Here, the pointer 101 may have various shapes other than the arrow shapes shown in FIG. 3, such as a point, a cursor, a prompt, and an outline.

In the embodiment of the present invention, the image display apparatus 100 may sense the first gesture input of a user existing within a predetermined range based on the body, for example, through the sensing unit 190. [ The control unit 150 of the video display device 100 receives the first gesture input from the external input device that is recognized as the first gesture input and is connected to the video display device 100 within a predetermined period of time The broadcast channel can be changed based on the condition corresponding to the detected first gesture input and the direction information included in the received signal.

According to the present invention, it is possible to provide a convenient control environment for the user because the movement to the desired broadcast channel or the broadcast channel belonging to the specific group and the channel movement unit can be performed more effectively through the user's complex gesture input.

Hereinafter, with reference to FIG. 4, a method of switching a broadcast channel through a user's complex gesture input according to an embodiment of the present invention will be described. In this regard, FIG. 4 is an exemplary flowchart for explaining a method of operating a video display device according to an embodiment of the present invention.

4, the controller 150 of the image display apparatus 100 according to the exemplary embodiment of the present invention can detect a first gesture input of a user existing within a predetermined range on the basis of the main body S410).

To this end, the image display apparatus 100 senses the position of the user and the gesture of the user through the sensing unit 190, and transmits the sensed result to the controller 150.

Here, the sensing unit 190 may be a variety of devices capable of capturing an image, such as a digital camera, a CMOS camera, and a CCD (Charged Coupled Device) camera, or various sensor modules capable of sensing a subject. For example, at the boundary region of the display unit 170 or at the periphery thereof.

Specifically, the sensing unit 190 photographs an image related to a gesture of a hand such as a hand shape or an operation of a user existing within a predetermined range based on the main body, in particular, the display unit 151, It is possible to recognize the hand motion of the user.

For example, the sensing unit 190 may distinguish a hand region of a user from a user's image photographed through a camera, extract a color of the user's hand and background colors other than the hand, . In addition, the sensing unit 190 may track the movement path of the specific hand based on the hand region extracted through the camera.

Herein, the first gesture input means a user operation related to the condition of channel change in the broadcast mode. For example, when the user inputs a gesture of the "first shape " using his or her hand, the broadcast channel can be changed according to the corresponding first condition, and when the user inputs a gesture of the & The broadcast channel can be changed according to the corresponding second condition. The operation of the user corresponding to the condition of the channel change can be stored in advance in the storage unit 160. [

Meanwhile, the display unit 170 may output a broadcast program corresponding to a specific broadcast channel. In the broadcast mode in which at least one broadcast program is output to the display unit 170, the controller 150 determines whether the first gesture input is recognized and the external gesture input is detected within a predetermined time (e.g., 1 to 2 seconds) A signal corresponding to the second gesture input may be received from the input device 200 (e.g., a space remote controller) (S420).

Here, the signal corresponding to the second gesture may be, for example, a scroll signal, a pointing signal, or a key input signal.

Specifically, if the received signal is a scroll signal, it includes direction information and speed information corresponding to the rotation of the wheel provided in the external input apparatus 200. If the received signal is a pointing signal, the direction information and the moving speed information of the pointer displayed on the display unit 150 according to the motion information sensed through the sensor unit 230 of the external input device 200 are included. If the received signal is a key input signal, it senses the position of the touched key and includes information on corresponding functions (increase in channel number, decrease in channel number).

Also, the controller 150 may recognize the function or operation of the video display device 150 corresponding to the first gesture input. For this, a user gesture corresponding to a specific function or operation of the image display device 150 may be stored in the storage unit 160 in advance.

When the first gesture input of the user is recognized and the signal corresponding to the second gesture input input to the external input device 200 is received, the controller 150 determines that the condition corresponding to the first gesture input The operation of the image display apparatus 100 is controlled to change the broadcast channel based on the direction information included in the received signal (S430).

Specifically, the control unit 150 controls to channel up or down a broadcast channel currently output to the display unit 150 according to the condition corresponding to the first gesture input and the direction information included in the received signal .

That is, when the first gesture input and the signal are combined and the first gesture input is maintained and the signal is continuously received from the external input device 200, the controller 150 controls the first gesture input And controls the channel up or channel down according to the direction information of the received signal while satisfying the channel moving condition corresponding to the input.

At this time, the channel number of the broadcast channel switched according to the combined operation of the first gesture input of the user and the second gesture input may not necessarily increase sequentially or sequentially.

For example, the channel may be switched by skipping a plurality of broadcast channels registered in the entire channel map according to a condition corresponding to the first gesture input. Also, for example, the channel may be switched while repeatedly increasing and decreasing the channel number according to a predetermined pattern.

The image display apparatus 100 according to an embodiment of the present invention may be configured such that when either the first gesture input or the second gesture input is recognized, the display unit 170 or the audio output unit 180 may input an unrecognized gesture And the like. Alternatively, if the recognition of at least one of the first gesture input and the second gesture input continuously fails, the image display apparatus 100 may output a notification requesting to perform the first gesture input again.

As described above, according to the method of operating the image display apparatus according to the embodiment of the present invention, movement to a desired broadcast channel and a channel movement unit can be effectively performed through a user's operation and a complex gesture input using an external input device have.

Hereinafter, an operation method of a video display device corresponding to a user's composite gesture input for switching a broadcast channel on a preferred channel-by-channel basis will be described with reference to FIGS. 5 to 6A and 6B. FIG.

In this regard, FIG. 5 is a conceptual diagram for explaining a complex gesture input for switching a broadcast channel on a per-preferred-channel basis, according to an embodiment of the present invention. 6A and 6B are conceptual diagrams for explaining how to register or release a current broadcast channel as a favorite channel through a gesture input according to an embodiment of the present invention.

Here, the external input device 200 connected to the image display apparatus 100 according to the present invention, for example, a space remote controller may be configured such that when a key for performing a preferred channel mode, for example, It will be particularly useful.

The control unit 150 of the video display device 100 detects a first gesture input of a user existing within a predetermined range on the basis of the main body in a state where a broadcast program corresponding to a specific broadcast channel is output to the display unit 170 can do. For this, the image display apparatus 100 can sense the user's position and the gesture of the user through the camera of the sensing unit 190. [

The control unit 150 may enter the preferred channel mode in response to the detected first gesture input being recognized as a predetermined first shape. Here, the preferred channel mode refers to a mode for changing a channel on a preferred channel map composed only of channels desired by the user among broadcast channels registered in the entire channel map.

For example, referring to FIG. 5, the first shape may be a shape (e.g., a gesture of a shape indicating "OK ") that the user 900 collects his or her thumb and index finger, 510). The first shape is not limited to this, and may be, for example, an operation of moving a user's hand pointing to the first shape in a predetermined direction or changing the shape to a second shape. Such a shape may be stored in the storage unit 160 and may be changed to another shape through a user input.

When the controller 150 enters the preferred channel mode according to recognition of the first shape and receives a signal corresponding to the second gesture input input to the external input device 200, And changes the broadcast channel in units of the pre-registered preferred channel according to the direction information of the broadcast channel.

For example, referring to FIG. 5, it is assumed that the user 900 takes a gesture of a shape indicating "OK " and, at the same time as entering the preferred channel mode, When the second gesture input 520 for rotating the key in the first direction is performed, the controller 150 may change the preferred channel based on the first direction. For example, when the first direction is a direction ('+') in which the channel increases, the controller 150 can change the registered preferred channel sequentially while increasing the number corresponding to the movement of the wheel key. On the other hand, if the first direction is the direction of decreasing the channel ('-'), the controller 150 may switch channels while decreasing the registered favorite channel in order corresponding to the movement of the wheel key.

Although not shown in FIG. 5, when the second gesture input 520 is performed by touching another hard key provided in the external input device 200 together with the first gesture input of the first shape, Similarly, channel switching can be accomplished.

6A and 6B, the process of editing the preferred channel map will be described in detail as follows. In the embodiment of the present invention, the process of registering and releasing the preferred channel to the preferred channel map is convenient only for the user since it is performed only by the user's operation.

In a state where a broadcast program corresponding to a specific broadcast channel is output to the display unit 170 of the video display device 100 according to the embodiment of the present invention, that is, in the broadcast mode, It is possible to detect the gesture input of the user existing within the range.

If the sensed gesture input is the third gesture input, the controller 150 may register the broadcast channel corresponding to the screen information currently output to the display unit in the map of the preferred channel. Here, the third gesture input may be a user gesture indicating a shape different from the first to second gesture input.

For example, referring to FIG. 6A, when a broadcast screen corresponding to a specific broadcast channel, for example, channel '77' is output to the display unit 170, a predetermined gesture input from the user 900, If there is a gesture input of the shape 610a indicating '0' using both hands, the controller 150 can register the channel '77' in the preferred channel map.

On the other hand, if the sensed gesture input is the fourth gesture input, the control unit 150 can release the broadcast channel corresponding to the screen information currently output to the display unit 170 from the map of the preferred channel. Here, the fourth gesture input may be a user gesture indicating a shape different from the first to third gesture input.

For example, referring to FIG. 6B, in a state where a broadcasting channel corresponding to a specific broadcasting channel registered in the preferred channel map, for example, channel 77, is displayed on the display unit 170, If there is a gesture input of a set gesture input, for example, a shape 610a representing 'X' using two hands, the controller 150 can release the channel '77' from the preferred channel map.

Here, the shape corresponding to the third gesture input and the fourth gesture input is a shape previously stored in the storage unit 160, and the shape corresponding to the previously stored third gesture input and the fourth gesture input is input through the user input It can be changed into another shape.

In addition, in the embodiment of the present invention, when a user's fifth gesture input (the gesture input different from the first to fourth gesture input) is sensed, a portion of the display unit 170 of the control unit 150 A list of broadcast channels registered in the channel map can be displayed. If the gesture input is recognized in a state where the list is displayed, the controller 150 can release a specific broadcast channel from the preferred channel map without changing the channel, or transmit a new broadcast channel to the preferred channel map It is possible to register.

In this manner, when an event occurs in which a specific broadcast channel is registered in the preferred channel map or released from the preferred channel, the controller 150 can output a notification corresponding to the generated event.

For example, as shown in FIG. 6A, when the channel '77' is registered in the preferred channel map, a message indicating that the channel '77' is registered in the preferred channel map, for example, Can be output to one area. Also, for example, as shown in FIG. 6B, when the channel '77' is released from the preferred channel map, a message such as 'released from the preferred channel' is displayed on the display unit 170 ). ≪ / RTI > Meanwhile, in another example, such notification messages may be output through the audio output unit 180.

As described above, the broadcasting channel corresponding to the screen currently displayed on the display unit 170 can be registered in the preferred channel map or released from the preferred channel map with only a simple user gesture input.

Hereinafter, with reference to FIG. 7, an operation method of a video display device corresponding to a user's compound gesture input for switching a broadcast channel in a pre-classified group channel unit will be described.

In this regard, FIG. 7 is a conceptual diagram for explaining a complex gesture input for switching a broadcast channel in a group channel unit according to an embodiment of the present invention.

Herein, the group channel refers to a case where a plurality of broadcast channels are grouped into a plurality of groups based on the EPG information input through the tuner 110. For example, when the group channels are classified according to broadcasting genres, the group channels may be broadcast channels belonging to each group classified into drama, sports, news, education, and the like.

The control unit 150 of the video display device 100 detects a first gesture input of a user existing within a predetermined range on the basis of the main body in a state where a broadcast program corresponding to a specific broadcast channel is output to the display unit 170 can do. For this, the image display apparatus 100 can sense the user's position and the gesture of the user through the camera of the sensing unit 190. [

The control unit 150 may enter a group channel mode based on the EPG information in response to the detected first gesture input being recognized as a predetermined second shape.

The EPG information is broadcast-related information periodically provided to a user who watches a broadcast through the video display device 100, and includes, for example, a title, a channel number, a broadcast time, can do. The EPG information may be output through the display unit 170 through a predetermined control command.

At this time, the criteria for grouping a plurality of broadcast channels into a plurality of groups based on the EPG information may vary. That is, the broadcast channels may be grouped according to a specific broadcast time zone based on the broadcast time included in the EPG information. Alternatively, broadcast channels may be grouped by genre or frequently broadcasted by the user based on the broadcast program information included in the EPG information Can be classified. It is also possible to set a specific criterion for classifying a plurality of broadcast channels based on the EPG information through user input.

For example, referring to FIG. 7, the second shape may be a 'fist' shape 710 with the user 900 wrapping all of his or her fingers. The second shape is not limited thereto, and may be, for example, an operation of moving the user's hand pointing to the second shape in a predetermined direction or changing the shape to a third shape. In addition, such a shape may be stored in the storage unit 160 and may be changed to another shape through user input.

If the second gesture input is inputted to the external input device 200, the controller 150 controls the controller 150 to include the signal in the received signal, And changes the broadcast channel in units of group channels classified based on the EPG information according to the direction information. That is, it is possible to switch to a specific broadcast channel belonging to the first group, and then to a specific broadcast channel belonging to the second group.

For example, referring to FIG. 7, when the user 900 takes a hand-shaped gesture indicating "fist " and enters the group channel mode, or at a predetermined time interval, When the second gesture input 520 for rotating the wheel key in the first direction is performed, the controller 150 can change the broadcast channel on a group channel basis based on the first direction. At this time, if the first direction is a direction ('+') in which the channel increases, the controller 150 changes the broadcast channel while skipping in the direction of increasing the group number corresponding to the movement of the wheel key. On the other hand, if the first direction is a direction ('-') in which the channel is decreasing, the controller 150 changes the broadcast channel by skipping in the direction of decreasing the group number corresponding to the movement of the wheel key.

Meanwhile, the control unit 150 may display a classification criterion of a group or a group to which the converted broadcast channel belongs, in one area of the display unit 170. [ For example, in FIG. 7, when the switched channel '77' is a channel belonging to the drama group, an indicator indicating the corresponding group, for example, 'drama' For example, in an area adjacent to the channel display area 301. [

In addition, the EPG information is displayed on the display unit 170 according to the EPG information display request input from the user, and the control unit 150 changes the classification criteria of the group or edits a plurality of groups It is possible.

For example, the control unit 150 displays a group list of channels classified based on the EPG information through the sixth gesture input of the user, and displays the group using the predetermined gesture Deleted, added, or changed.

Also, although not shown in FIG. 7, when the second gesture input 520 is performed by touching another hard key included in the external input device 200 together with the first gesture input of the second shape, Channel switching can be done in the same way as.

Hereinafter, with reference to FIG. 8, an operation method of an image display apparatus corresponding to a complex gesture input for switching a broadcast channel within a group or a specific number band corresponding to a specific number will be described.

8 is a conceptual diagram for explaining a complex gesture input for switching a broadcast channel in a specific number band unit according to an embodiment of the present invention.

In a preferred embodiment of the present invention, the controller 150 of the image display apparatus 100 displays a broadcast program corresponding to a specific broadcast channel on the display unit 170, The first gesture input of the user can be sensed. For this, the image display apparatus 100 can sense the user's position and the gesture of the user through the camera of the sensing unit 190. [

The control unit 150 may detect a broadcast channel representing a group or a recognized number band corresponding to the recognized number in response to the recognized first gesture indicating a specific number.

For example, referring to FIG. 8, when the user 900 expands his / her detection and stop (or thumb and forefinger) and the remaining finger is a folded shape (i.e., a gesture indicating the number '2' ) Can recognize it as the number '2'. Such a shape may be stored in the storage unit 160 and may be changed to another shape through a user input.

When a broadcast channel representative of a recognized number or a recognized number band is detected and a signal corresponding to a second gesture input input to the subsidiary input device 200 is received, Changes the broadcast channel in the corresponding group or changes the broadcast channel in units of the recognized number band based on the direction information of the received signal. At this time, whether the recognized number is to be associated with a specific group or a specific number band can be selected through user input.

Here, the representative broadcast channel may be, for example, a channel having the smallest channel number in the corresponding group or a corresponding number band.

8, when the recognized number is mapped to a specific number band, the first channel corresponding to the second digit, i.e., the channel '20' 301 corresponding to the recognized number '2' A broadcast screen is output to the display unit 170. [ Then, the broadcasting channel of the 20th band is sequentially switched according to the second gesture input for rotating the wheel key provided in the external input apparatus 200. [ That is, when performing the second gesture input 520 that rotates the wheel key provided in the external input apparatus 200 in the first direction, the controller 150 determines the broadcasting channel based on the recognized number Change the channel by '2' band unit.

At this time, if the first direction is a direction ('+') in which the channel increases, the controller 150 controls the direction in which the group number increases corresponding to the movement of the wheel key, for example, '20, 21, 22, ... 29, 200, 201 ... ', the broadcasting channel can be switched while skipping the channel. On the other hand, if the first direction is a direction ('-') in which the channel is decreasing, the controller 150 may decrease the group number corresponding to the movement of the wheel key, for example, '29, 28, 27,. ... 20, 2 ', the broadcast channel can be switched while skipping the channel.

In addition, if another specific number is recognized while changing the channel in units of the number '2' band, that is, when the gesture input indicating the number is changed, the broadcast channel of the changed number band is displayed on the display channel 170 The channel can be changed to the nearest channel.

Although not shown in FIG. 8, recognition of two or more digits may be performed by inputting a gesture input indicating a second digit within a few seconds after the gesture input indicating the first digit is displayed, if the digit is two or more digits .

In another embodiment, when the recognized number is mapped to a specific group, a broadcast screen corresponding to the first broadcast channel belonging to a group (e.g., a sports related channel group) corresponding to the recognized number '2' . Then, the wheel key provided in the external input device 200 is switched to a second broadcast channel belonging to the sports related channel group according to the second gesture input to rotate. At this time, when a signal of a direction of decreasing the channel ('-') is received while the broadcasting screen corresponding to the first broadcasting channel of the group is displayed, the broadcasting channel can be switched to the last broadcasting channel of the group. On the other hand, if a signal of '+' increasing the channel is received while the broadcasting screen corresponding to the last broadcasting channel of the group is displayed, it is possible to switch to the first broadcasting channel of the corresponding group.

Although not shown in FIG. 8, when the second gesture input 520 is performed by touching another hard key provided in the external input device 200 together with the first gesture input indicating a specific number, Channel switching can be done in the same way as.

As described above, it is possible to change the channel by a condition unit related to the recognized number through the user gesture input through the user gesture input and the key operation of the external input device.

Hereinafter, a method of displaying the recognition of the user's compound gesture input for channel switching on the outside will be described with reference to FIG.

In this regard, FIG. 9 is a conceptual diagram for explaining a start gesture related to a complex gesture input for channel switching and a method for indicating whether or not a complex gesture input is recognized, in accordance with an embodiment of the present invention.

The control unit 150 of the video display device 100 may be configured to display a broadcast program corresponding to a specific broadcast channel on the display unit 170 of the video display device 100, The first gesture input of a user existing within a predetermined range can be sensed. For this, the image display apparatus 100 can sense the user's position and the gesture of the user through the camera of the sensing unit 190. [

Meanwhile, in the embodiment of the present invention, the initial gesture input may be requested before the channel change is performed by the user's compound gesture input.

For this, the controller 150 may determine whether a predetermined initial gesture input has been detected before the user's first gesture input is sensed.

For example, referring to FIG. 9 (a), a user performs a gesture (i.e., a 'crepe' type gesture input) of a shape shown by the user's palm facing the display unit 170, Next, it is possible to control the channel change by the first gesture input and the second gesture input. Here, the initial gesture may be stored in the storage unit 160 and may be changed through user input.

The controller 150 may determine whether the first gesture input is recognized according to the determination result.

That is, when a predetermined initial gesture is input as a result of the determination, a notification message such as 'an initial gesture detected' is displayed in one area of the display unit 170, for example, It can be popped up.

As a result of the determination, if the predetermined initial gesture is not input, a message requesting input of the initial gesture may be popped up or the channel change by the user's composite gesture may not be performed.

Meanwhile, in another example, the control unit 150 outputs a notification of at least one of the input of the initial gesture, the input request of the initial gesture, and the recognition or recognition failure of the initial gesture through the audio output unit 180 .

After the initial gesture is input, the first gesture input sensed through the sensing unit 190 is recognized, and the external input device 200 (e.g., The control unit 150 can change the broadcast channel based on the condition corresponding to the first gesture input and the direction information included in the received signal .

At this time, the controller 150 may display that the input of the first gesture and the input of the second gesture are recognized, respectively.

Specifically, when the first gesture input is recognized, the controller 150 may display a first icon corresponding to the first gesture input in one area of the display unit 170. [ In addition, the controller 150 recognizes the first gesture input and outputs a signal corresponding to the second gesture input (input to the external input device 200) within a predetermined time (e.g., 1 to 2 seconds) The first icon displayed on the display unit 170 can be changed to the second icon. Here, the first icon and the second icon may be in any form. That is, the first icon and the second icon may be an image of an indicator indicating the recognition result, an image, or a combination thereof.

For example, referring to FIG. 9B, if there is a first gesture input indicating a number '2' within a few seconds after the user's initial gesture input, and the control unit 150 recognizes the first gesture input, The display unit 150 may display the text 340 indicating the number '2' on the front of the display unit 170. At the same time, the screen output to the display unit 170 is channel-shifted to a broadcast channel, for example, a channel '20' representing the recognized number band.

9C, a signal corresponding to the second gesture input is received from the external input device 200 after the first gesture input of the user, and the control unit 150 receives the signal corresponding to the second gesture input If it is recognized, the control unit 150 displays a text 350 in the form of a reduced text 340 indicating the number '2' shown in FIG. 9B, in one area of the display unit 170, for example, It can be displayed at the top. In addition, the screen displayed on the display unit 170 can be moved from the channel '20' to the channel '21' according to the direction information of the received signal. 9 (c), when the first gesture input and / or the second gesture input is recognized as being changed, the shape of the icons displayed on the display unit 170 corresponding thereto is also changed.

In the case where the channel change is performed by considering the gesture input of the user who recognized the change of the channel and the signal received through the external input device 200, it is necessary to memorize a variety of gesture inputs and to recognize gestures It is possible to overcome the limitation of the key resources to be provided to the external input apparatus 200.

Hereinafter, with reference to FIG. 10, an operation method of an image display apparatus in which channel switching corresponding to a complex user gesture input is performed by voice commands and signals input to an external input apparatus will be described.

FIG. 10 is a conceptual diagram for explaining a case where a composite gesture input for channel switching is performed by voice commands of a user according to an embodiment of the present invention.

The control unit 150 of the image display apparatus 100 according to the embodiment of the present invention can sense a voice command of a user existing within a predetermined range based on the main body. To this end, the image display apparatus 100 senses a user's approximate position through a camera (not shown) and a microphone (not shown) of the sensing unit 190, detects a user's voice through a microphone, And may transmit the sensed result to the controller 150. [

Meanwhile, the display unit 170 may output a broadcast program corresponding to a specific broadcast channel. In the broadcasting mode in which at least one broadcasting program is output to the display unit 170, the controller 150 recognizes the voice command of the user and inputs the external input (e.g., 1 to 2 seconds) A signal corresponding to the second gesture input may be received from the device 200 (e.g., a space remote) (S420).

When the user's voice command is recognized and a signal corresponding to the second gesture input input to the external input apparatus 200 is received, the controller 150 determines whether the condition corresponding to the inputted voice command and the reception And controls the operation of the video display device 100 to change the broadcast channel based on the direction information included in the received signal. The above embodiments can be applied equally here except that the first gesture input is switched to the voice command of the user.

For example, if the voice command is a control command for entering the preferred channel mode, the control unit 150 may control the broadcasting channel to be changed in units of a pre-registered preferred channel according to the direction information of the received signal.

Alternatively, if the voice command is a control command for entering the group channel mode based on the EPG information, the control unit 150 controls the control unit 150 based on the direction information of the received signal in units of groups classified on the basis of the EPG information And to change the broadcast channel.

In another example, if the voice command is recognized as a specific number of sounds, the controller 150 may detect a broadcast channel representing a group corresponding to the recognized number or a recognized number band. Then, the control unit 150 may control to change a broadcast channel belonging to the group based on the direction information of the received signal or to change a broadcast channel while skipping in the number band.

10, when the user 900 shouts' 2 'and the controller 150 recognizes the voice as a voice for the number' 2 ', the broadcast channel' 20 '. ≪ / RTI > Then, in response to the rotation of the external input device 200, for example, the wheel of the space remote controller in the direction of increasing the number, the channel change as much as the movement of the wheel can be made. For example, a channel change can be made in a pattern like '21, 22, 23, ... 29, 200, 201'.

10, when the channel is changed through the combined user gesture input of the user's voice command and the operation of the external input device 200, the text 340 indicating the voice recognition is displayed, May be displayed on one area of the display unit 170, for example, on the lower right side.

In this way, when the channel change is performed by the combined operation of the voice command of the user and the gesture input through the external input device 200, the channel movement in the unit desired by the user is performed by one hand (input to the external input device 200) The user's hand action for the user), thereby providing user convenience.

As described above, according to the method of operating the image display apparatus and the image display apparatus according to the present invention, movement to a desired broadcast channel or a broadcast channel belonging to a specific group and a channel movement unit are effectively performed through a user's complex gesture input Thereby providing user convenience. In addition, by using the input by the user operation and the input by using the external input device when the channel is moved, intuitive control is possible through the input by the user operation and the key to the external input device can be more easily configured .

Further, it will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

Claims (14)

A wireless communication unit for connecting with an external input device;
A sensing unit for sensing a first gesture input of a user existing within a predetermined range based on the body; And
In the broadcast mode, if the first gesture input is sensed and a signal corresponding to the second gesture input is received from the connected external input device within a predetermined time,
And controlling the broadcasting channel to be changed based on a condition corresponding to the sensed first gesture input and direction information included in the received signal. The method according to claim 1,
Wherein the signal corresponding to the second gesture is one of a scroll signal, a pointing signal, and a key input signal,
Wherein the control unit controls to channel up or down the broadcast channel according to the direction information. The method according to claim 1,
Wherein,
Wherein the controller is configured to enter a preferred channel mode in response to the first gesture input being recognized as a predetermined first shape and to control a broadcast channel to be changed in units of pre-registered preferred channels according to the direction information. Device. The method of claim 3,
Wherein the control unit, in the broadcast mode,
If the third gesture input is recognized, the broadcast channel corresponding to the screen information currently output to the display unit is registered in the map of the preferred channel,
And controls to release the broadcast channel from the map of the preferred channel when the fourth gesture input is recognized while the screen information corresponding to the broadcast channel registered in the preference channel is output to the display unit. 5. The method of claim 4,
Wherein,
Wherein the controller controls to output a notification corresponding to the generated event when at least one of registration of the favorite channel in the map and release of the map from the map of the preferred channel occurs. The method according to claim 1,
Wherein,
In response to the first gesture input being recognized as a predetermined second shape, enters a group channel mode based on EPG information, and based on the direction information, broadcasts the broadcast channel in groups divided on the basis of the EPG information And the video display device. The method according to claim 1,
Wherein,
Detecting a broadcast channel representing a group or a recognized number band corresponding to the recognized number in response to recognizing that the first gesture represents a specific number, Or changes the broadcasting channel in units of the recognized number band. The method according to claim 1,
Wherein,
Wherein the controller determines whether a predetermined initial gesture input is detected before the first gesture input is sensed and determines whether the first gesture input is recognized according to a determination result. The method according to claim 1,
Wherein,
When the first gesture input is recognized, a first icon corresponding to the first gesture input is displayed in one area of the display unit, and when a signal corresponding to the second gesture input is received and recognized within a predetermined time, 1 icon to the second icon and displays the second icon. A wireless communication unit for connecting with an external input device;
A sensing unit for sensing a voice command of the user; And
In the broadcast mode, if the voice command is sensed and a signal corresponding to the second gesture is received from the connected external input device within a predetermined time,
And controlling the broadcasting channel to be changed based on the condition corresponding to the detected voice command and the direction information included in the received signal. 11. The method of claim 10,
Wherein,
And controls to change a broadcast channel in units of pre-registered preferred channels according to the direction information if the voice command is a control command for entering the preferred channel mode. 11. The method of claim 10,
Wherein,
If the voice command is a control command for entering the group channel mode based on the EPG information, control to change the broadcast channel in units of groups classified on the basis of the EPG information based on the direction information Display device. 11. The method of claim 10,
Wherein,
Detecting a broadcast channel representing a group corresponding to the recognized number or a recognized number band when the voice command is recognized as a specific number of voice, changing the broadcast channel belonging to the group based on the direction information, And controls to change a broadcast channel while skipping in a unit of a number band. Sensing a first gesture input of a user within a predetermined range based on the body;
Receiving, in a broadcast mode, a signal corresponding to a second gesture input from an external input device in which the first gesture input is recognized and connected within a predetermined time; And
And changing a broadcast channel based on a condition corresponding to the first gesture input and direction information included in the received signal.

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