KR20150020920A - Image display apparatus and operation method thereof - Google Patents

Abstract

Disclosed are an image display device capable of improving user′s immersion and a method for operating the same. The image display device according to embodiments of the present invention comprises: a back cover; a display unit including a first region and a second region extending from both ends of the first region to bend forward in response to the shape of the back cover and outputting image information to the first and second regions; a photographing unit to recognize the position of a user within a predetermined range based on the display unit; a detection unit to detect a distance value from the display unit and a viewing angle of the user with respect to the display unit based on the recognized position of the user; and a control unit, wherein the control unit differently applies brightness compensation values of the image information output to the first and second regions based on the detected distance value and viewing angle.

Description

[0001] IMAGE DISPLAY APPARATUS AND OPERATION METHOD THEREOF [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display apparatus for outputting images and an operation method thereof, and more particularly to an image display apparatus including a display unit having a structure capable of improving a user's immersion feeling and an operation method thereof.

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 is implemented in the form of, for example, a television, a computer monitor, a projector, a tablet, a navigation device, a digital broadcast receiving device (Digital Television)

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, various attempts have been made to improve the image quality of the image output to the image display device. In recent years, various studies on stereoscopic image technology have been carried out. Particularly, studies on a video display device having a structure capable of improving the user's immersion feeling when viewing an image such as 3D are being actively conducted.

It is therefore an object of the present invention to provide an image display apparatus and a method of operating the image display apparatus in which both ends of the display unit are bent forward in correspondence with the shape of the back cover so as to enhance the user's immersion feeling .

The embodiments of the present invention are capable of nonlinearly correcting the image quality of the distorted image according to the viewing position of the user or the viewing angle of the screen in a structure in which both ends of the display unit are bent forward corresponding to the shape of the back cover The present invention also provides an image display apparatus and an operation method thereof.

To this end, an image display apparatus according to an embodiment of the present invention includes a back cover; A display unit including a first area and a second area extending from both ends of the first area so as to be bent forward corresponding to the shape of the back cover and configured to output image information to the first area and the second area; ; A photographing unit for recognizing a position of a user within a predetermined range based on the display unit; A detector for detecting a distance value between the display units and a viewing angle of the user with respect to the display unit based on the recognized user's position; And a controller for applying the luminance compensation values of the image information output to the first and second areas differently based on the detected distance value and the viewing angle.

In one embodiment, the control unit may set the image information output to the second area as non-linear to correct the distortion of the image information when the detected distance value exceeds a preset threshold range. And compensates for the defects.

In one embodiment, the controller outputs the image information of the first area as it is, and sets the image information output to the second area as an overscan so that the image information is scaled down. The non- And performs an effective compensation.

In one embodiment, the control unit increases the luminance compensation value for the second area as the degree of the detected distance value exceeds the threshold range.

In one embodiment, when the user is positioned on the side of the display unit with respect to the display unit and the viewing angle of the detected user is less than a predetermined threshold value, the controller displays the object displayed in the second area, So as to be output.

In one embodiment, when the user is positioned on the side of the display unit with respect to the display unit and the viewing angle of the detected user is less than a predetermined threshold value, the controller displays the object displayed in the second area, Is displayed in the first area.

In one embodiment, the photographing unit further recognizes the direction of the user's gaze, and the control unit is further configured to cause the photographing unit to photograph the second region when the user is located on the side with respect to the display unit and the viewing angle of the detected user is less than a predetermined threshold And controls the displayed object to be displayed at a position opposite to the direction of the user's eyes.

In one embodiment, the second area includes a plurality of areas separated from each other around the first area, and the control unit may be configured such that when the user is positioned on the side of the display unit with respect to the display unit, And moving the object displayed in the second area closer to the user's position to the second area farther from the user's position when the predetermined threshold is less than the predetermined threshold value.

In one embodiment, the control unit outputs the image information of the second area away from the user's position as it is, and the image information output to the second area near the user's position is dimmed or pixel-controlled to increase the brightness ratio And a control unit.

In one embodiment, the control unit controls the brightness ratio of the dimming control or the pixel control to be larger for the image information output to the plurality of second areas as the detected viewing angle of the user is smaller than the threshold value do.

In one embodiment, when the detected distance value is less than a predetermined threshold range, the control unit displays a GUI for controlling the image information on a lower area of the bezel unit formed along the front edge of the display unit or the display unit User Interface) is displayed.

In one embodiment, the control unit controls the hidden GUI to be displayed when a predetermined touch or proximity touch is detected in the lower area and outputs a light emission effect using the LED device around the GUI do.

In one embodiment, when the detected distance value is out of a preset threshold range or the viewing angle of the detected user is smaller than a predetermined threshold value, And outputs a predetermined alarm for deriving the alarm.

In one embodiment, when the preset user input is applied, the controller enters an image correction mode for correcting the image information output to the display unit, and controls to output an alarm indicating the image correction mode state .

The controller may further include an actuator coupled to the back cover to adjust a degree of warp of the second region, wherein the controller controls the operation of the actuator based on the detected distance value and the viewing angle And outputting a control signal for outputting the control signal.

In one embodiment, the second region includes a plurality of regions separated from each other around the first region, and the second region is connected to the back cover to adjust the degree of warping of the plurality of second regions, 1 actuator and a second actuator, wherein the control unit controls the first and second actuators to respectively control operations of the first and second actuators based on the detected distance value and the detected angle of view of the user, And outputs a control signal.

In one embodiment, when the user is located on the side with respect to the display unit, and the viewing angle of the detected user is less than a predetermined threshold value, the control unit determines that the second region The operation of the first and second actuators is controlled so as to change the degree of warping to the first value and change the degree of warping of the second region away from the position of the user to a second value larger than the first value, .

The display unit may further include a sensing unit for sensing at least one of an amount of light applied to the first and second areas of the display unit, a direction of the light, and a surrounding illuminance, The luminance compensation value of the image information output to the first and second areas is controlled differently based on at least one of the amount of light, the direction of light, and the ambient illuminance, and the detected distance value and viewing angle.

A method of operating an image display apparatus according to an exemplary embodiment of the present invention includes a display region including a first region and a second region extending from both ends of the first region to be bent forward corresponding to the shape of the back cover, The method comprising the steps of: outputting image information to the display unit; recognizing a position of a user within a predetermined range on the basis of the display unit; Detecting a viewing angle of the light source; And controlling the luminance compensation values of the image information output to the first and second areas differently based on the detected distance value and the viewing angle.

Therefore, according to the image display apparatus and the operation method thereof according to the embodiment of the present invention, it is possible to enhance the immersion feeling of the user, and to provide the image quality optimum according to the viewing angle of the user, By applying different luminance compensation values, image quality without deterioration can be provided at any point or at any viewing angle.

In addition, according to the image display apparatus and the operation method thereof according to the embodiment of the present invention, the image outputted to the display unit according to the viewing position of the user can be non-linearly scaled, local dimming control, The distortion-free video can be viewed.

In addition, the objects of the area where the luminance is low according to the viewing angle of the user are moved to another area where secularity is ensured, or the size is changed and output, thereby providing convenience for the user. Furthermore, by adjusting the degree of warpage of the display unit according to the illuminance of the surroundings or the viewing position of the user, it is possible to improve the tactility of the user and improve the immersion feeling.

1 is a diagram illustrating a detailed configuration of an image display apparatus according to an embodiment of the present invention.
2 is an exemplary diagram showing a detailed configuration of an external input device that interacts with the video display device of FIG.
FIGS. 3A to 3C are conceptual views illustrating a display unit of a video display device according to an exemplary embodiment of the present invention viewed from the front, side, and top. FIG.
4 is a flowchart illustrating an operation method of an image display apparatus according to an exemplary embodiment of the present invention.
5 is a conceptual diagram for explaining picture quality compensation values depending on a viewing position of a user in an image display apparatus according to an embodiment of the present invention.
6A to 6C are conceptual diagrams for explaining compensation of a screen by nonlinear scaling when a viewing position of a user is longer than a critical range in an image display apparatus according to an embodiment of the present invention.
7A to 7D are conceptual diagrams for explaining moving or resizing of an object displayed on a screen when a viewing angle of a user is smaller than a threshold value in an image display apparatus according to an embodiment of the present invention.
8A and 8B are conceptual diagrams for explaining a GUI (Graphic User Interface) for controlling a screen when a viewing position of a user is closer than a critical range in an image display apparatus according to an embodiment of the present invention. admit.
9 is a flowchart illustrating an operation method of an image display apparatus according to another 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 the present specification, the video display device is a concept including 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 related to the present invention. The image display apparatus 100 includes a tuner 110, a demodulator 120, a signal input / output unit 130, an interface unit 140, a controller 150, a memory 160, a display unit 170, An image output unit 175, an audio output unit 180, a photographing unit 190, and a detecting unit 195.

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.

Also, the control unit 150 determines whether the image photographed by the photographing unit (hereinafter referred to as 'camera' 190), the sensed signal from the sensing unit (not shown) Or a combination of the input signals transmitted from the gestures of the user.

In addition, the control unit 150 can recognize the position of the user based on the image photographed by the camera 190. [ 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 memory 160 may store a program for signal processing and control of the controller 150 and may store information on a predetermined broadcast channel through a channel memory function such as a video signal, a voice signal, a data signal, And so on. The memory 160 may be a flash memory, a hard disk, a multimedia card micro type, a card type memory (e.g., SD or XD memory), a random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM) And may include at least one storage medium.

In addition, the memory 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.

Meanwhile, the display module is divided into a display unit 170 for outputting an image and a bezel (not shown) formed along the edge of the display unit 170. In addition, a back cover 175 is disposed behind the display module to maintain the shape of the display module.

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.

In addition, the touch sensor may be disposed in an inner area surrounded by the display unit 170 or in proximity to the display unit 170. [ The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays.

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.

It is to be noted that the photographing unit 190 (hereinafter referred to as "photographing unit 190" and "camera" may be used in combination) may be used to photograph an image of a surrounding area to receive an audio signal and a video signal, To the external device or tracks the user. The photographing unit 190 may include at least one image sensor (not shown), and may further include a visible light blocking filter (not shown) and an infrared blocking filter (not shown). In addition, the photographing unit 190 may further include a microphone (not shown).

The photographing unit 190 photographs a user, and the image photographed through the photographing unit 190 is input to the control unit 150. Accordingly, the controller 150 can detect a user's movement, position, gesture, change of gaze, etc. based on the photographed image. The photographing unit 190 can perform both the user tracking function and the general photographing function using one camera. Alternatively, the photographing unit 190 may include a general camera for general photographing and an infrared camera for user tracking.

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.

In addition, the image display apparatus 100 may include an image communication unit (not shown) including a photographing unit 190 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.

In addition, the image display apparatus 100 may include a user tracking unit (not shown) including a photographing unit 190 and a microphone (not shown). The control unit 150 recognizes the position of the user's binocular from the image photographed by the camera and can detect a change in the line of sight corresponding to the movement of the user's binocular. The control unit 150 can acquire the user's gaze information based on the signal transmitted from the user tracking unit (not shown).

The detection unit 195 detects the position of the detected user and the distance value between the display unit 170 and the display unit 170. The detection unit 195 detects the viewing angle of the center of the display unit 170 based on the visual field of the user's eyes recognized through the photographing unit 190.

The sensing unit senses an external device existing in the vicinity of the image display device 100 or senses the ambient environment of the image display device 100, for example, illuminance, humidity, temperature, It senses contact or external force applied.

The actuator 198 adjusts the degree of warp by moving both ends of the display unit 170 in the inward direction or outward direction based on the control signal transmitted from the control unit 150.

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 video display device is used as a mobile terminal, a wireless communication unit (not shown) may be further 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.

A control signal for adjusting the degree of warping of the display unit 170 of the image display apparatus 100 may be provided by inputting a specific key and a directional key of the user input unit 220. The control signal is transmitted to the controller 150. The controller 150 applies the control signal to the actuator 198 to change the shape of the back cover.

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. [

FIGS. 3A to 3C are conceptual views illustrating a display unit of a video display device according to an exemplary embodiment of the present invention viewed from the front, side, and top. FIG. Here, a television receiver is shown as an example of the video display device 100 for the purpose of explanation.

3A, the photographing unit 190, that is, the camera disposed in one area of the frame of the image display device 100, for example, the upper center, i.e., the camera, The angle of view of the camera) of the user or the user.

At this time, the camera may be detachably mounted on a frame of the image display apparatus 100. [ That is, the camera may be embedded in the image display apparatus 100 or may be implemented as an accessory to be detachable from the image display apparatus 100. In addition, the photographing unit 190 may be structured to appear outside when the camera driving signal is applied while hiding in the inside. When the position of both eyes of the user is detected as described above, the camera can acquire gaze information of a user viewing an image output to the image display device 100. [

3A and 3B, the display unit 170 of the image display apparatus 100 may have a curved surface having a predetermined curvature R. Referring to FIG. 3A, a first display area A having a flat shape is present at the center of the display part 170 and a curved surface having a curvature R having a constant curvature R is formed at both ends of the display part 170 And a second display area B may be present.

One image information may be outputted without discrimination between the first display area and the second display area, or different images may be outputted according to a predetermined control command.

Meanwhile, the display unit 170 according to the embodiment of the present invention may be an OLED panel using an organic light emitting device (OLED). Organic light emitting devices (OLEDs) have a structure in which an organic light emitting layer in the form of a functional thin film is inserted between an anode electrode and a cathode electrode, in which holes are injected from the anode and electrons are injected from the cathode, The excitons are formed by bonding holes, and the excitons emit light while recombining light.

Examples of a method of realizing an organic light emitting display in a full color mode include an independent light emitting method, a color filter method, and a color conversion method.

Here, in the independent light emission method, R, G, and B are implemented by thermal deposition using a metal shadow mask in which light emitting materials of R, G, and B are precisely patterned. In the color filter method, R, G, and B are implemented by forming a white light emitting layer and patterning R, G, and B color filters. The color conversion system is a system in which R, G, and B are implemented using a color conversion layer in which a blue light emitting layer is formed and a blue color is changed to green and red.

3C, the display panel of the display unit 170 may be a flat display panel having a curvature close to zero, and such a flat panel display panel may be a separate frame having a curved surface, for example, a back cover (Not shown) and may be maintained in a curved shape having a certain curvature R.

3C, the curved surface shape of the display unit 170 of the image display apparatus 100 is determined such that the distance values d1, d2, and d3 between the viewing position S of the user and the display unit 170 are the same or The curvature R can be determined to have a similar value. Then, the display unit 170 has a curved shape according to the curvature R determined in this way.

Accordingly, the user's feeling of immersion can be improved when viewing an image output to the image display device 100, and in particular, the feeling of immersion of the user when viewing the 3D image can be greatly improved by the curved surface shape of the display portion 170 have.

In the case where the display unit 170 has a curved shape as described above, when the user located on the side faces the display area of the curved surface of the side surface beyond the flat display area, the brightness or brightness ratio of the image deteriorates do.

1) of the image display apparatus 100 according to the embodiment of the present invention corresponds to the shape of the back cover 175 (FIG. 1) extending from both ends of the first region and the first region And a second region formed so as to be bent forward. Predetermined image information is output to the first and second regions of the display unit 170 having the structure of which both ends are bent.

In addition, the photographing unit 190 provided in the image display device 100 recognizes the position of a user within a predetermined range based on the display unit 170. FIG. The detection unit 195 detects the distance between the user and the display unit 170 and the viewing angle of the user with respect to the display unit 170 based on the thus recognized position of the user.

When the detected distance value and viewing angle information are transmitted to the controller 150 (FIG. 1), the controller 150 controls the first and second areas of the display unit 170 based on the detected distance value and the viewing angle The luminance compensation value of the outputted image information is applied differently. In other words, when the user is away from the display unit 170, the user's current position based on the center of the display unit 170, and the viewing angle when the user looks at the display unit 170 at the current position The brightness of the image output to the display unit 170 is compensated differently according to the brightness or the brightness of the second region or the second region, thereby providing a user environment in which the user can view the image without degradation do.

Hereinafter, an operation method of an image display apparatus according to an embodiment of the present invention will be described with reference to FIGS. 4 and 5. FIG.

FIG. 4 is a flowchart illustrating an operation method of an image display apparatus according to an exemplary embodiment of the present invention, and FIG. 4 is a conceptual diagram illustrating an image quality compensation value depending on a viewing position of a user in the image display apparatus.

Referring to FIG. 4, an image display device 100 (FIG. 1) according to an embodiment of the present invention includes a first region having a flat shape and a second region extending from both ends of the first region, And outputs a predetermined image information to the display unit 170 (FIG. 1) including a second area having a curved shape configured to be bent by the first area (step S401).

Here, the image information output to the display unit 170 is not limited. For example, the image information may be an execution screen of a specific application, a broadcast program screen of a specific channel, or a predetermined web page. In addition, the image information may include menu objects related to screen control such as an icon and an indicator.

A back cover 175 having a curved shape is disposed behind the display unit 170 so that the display panel of the second area can be bent to correspond to the curved shape of the back cover. In addition, the back cover 175 may further include a fixing member for maintaining the curved shape, so that the display panel of the second area can maintain a certain curvature R.

In addition, the controller 150 may output the first image information to the first area and output the second image information different from the first image information to the second area. Alternatively, the control unit 150 may be configured to display image information only in the first area or output image information in the first area, and to control image information output in the first area in the second area, May be output.

The control unit 150 of the image display apparatus 100 drives the photographing unit 190 and recognizes the position of the user in a predetermined range with reference to the display unit 170 in operation S402, .

The photographing unit 190 may be embedded in a bezel (not shown) formed along an edge of the display unit 170, or may be implemented as an accessory detachable from the bezel. In addition, the photographing unit 190 is hidden in the bezel, and may be displayed outside when the driving signal is transmitted from the control unit 150. [

In addition, the controller 150 may output a driving signal for driving the photographing unit 190 when entering the image correction mode.

The photographing unit 190 recognizes the position of the user within the angle of view of the photographing unit 190 based on the display unit 170 according to the driving signal.

In addition, the photographing unit 190 may include an infrared sensor (not shown) to recognize the user's eyes. Accordingly, the user's position and the user's gaze can be tracked together. In addition, the photographing unit 190 can recognize the user's face based on the recognized user's pupil and color information.

The position of the user sensed through the photographing unit 190 can be divided into a plurality of regions based on the angle of view range, and may be referred to as a plurality of 'photographing regions' hereinafter. Such a plurality of photographing regions can be distinguished into five regions in the center, the front, the rear, the left, and the right on the basis of the display unit 170, for example.

Here, the number of division of the photographing region is proportional to the size of the display unit 170, and the division criterion may be a viewing angle of the user looking at the display unit 170. Further, the number of division of the shooting region and the division criterion can be changed through user input.

5, an optimal area ('Best Zone') in the center and a left side and right side area (for example, a right side and a left side) are defined within the angle of view of the photographing unit 190 of the display unit 170, (&Quot; A Zone B "), a close region ('D region') and a distant region ('C region').

Concretely, in the best zone ('Best Zone'), the curved surface shape of the second area of the display unit 170 is not felt to the user, so that it is possible to view an image of a flat shape without distortion as a whole. That is, the sense of immersion of the user is further improved.

On the other hand, in the areas A and B, since the viewing angle of the user detected based on the center of the display unit 170, that is, the first area is narrow, the luminance of the image output to the side of the display unit 170, There is a deterioration in which the brightness ratio is lowered.

In the C region, since the curved surface shape of the second area of the display unit 170 is felt by the user as it is, there is a problem that the user views the entirely concave shape image.

In the D area, there is no deterioration of the image relative to the optimal area ('Best Zone'). However, since the image output to the display unit 170 is viewed at a glance, a corresponding screen is output according to the user's intention Control is required.

As described above, the area required to improve the image quality or the scaling of the image output to the display unit 170 is determined by the distance between the user and the display unit 170 and / or the viewing angle of the user viewing the display unit 170 .

1) detects a distance value between the user and the display unit 170 and a distance value between the user and the display unit 170 based on the position of the user recognized by the photographing unit 190 (FIG. 1) (S403).

In addition, the detection unit 195 can detect a distance change amount based on the detected distance value and the current user position. That is, the detection unit 195 may detect that the distance between the user and the display unit 170 changes from the first distance value to the second distance value. The detection unit 195 may detect the viewing angle change amount based on the detected viewing angle and the viewing direction of the current user sensed by the photographing unit 190.

When the distance value and the viewing angle are detected by the detecting unit 195, the controller 150 calculates the luminance compensation values of the image information output to the first and second areas based on the detected distance value and the viewing angle, (S404).

For this, the controller 150 may collect luminance information and color information from a video signal input to the image display device 100. [ The collection of luminance information and color information can be collected, for example, on a pixel-by-pixel basis. That is, when pixel information is expressed by the YCbCr method, it is possible to collect color information by collecting Y values representing luminance, collecting luminance information, and collecting Cb values and Cr values representing colors.

When it is detected that the input image signal indicates a predetermined area, for example, a hand area or a face color area, the controller 150 separately counts the number of pixels corresponding to the area, Can be calculated.

Then, the controller 150 determines the primary luminance correction value based on the luminance information, the color information, and the pixel number information (or ratio information) of the predetermined area.

When the primary luminance correction for the video signal is performed in this way, the controller 150 controls the image information output to the first and second areas based on the detected distance value and the viewing angle, As a result, different secondary luminance corrections are performed.

Hereinafter, specific examples for correcting the images output to the first area having a flat shape and the second area having a curved shape, which are different from each other, will be described with reference to step S404.

If the detected distance value exceeds the predetermined threshold range, that is, if the user is located away from the display unit 170 in step S404, And non-linearly compensates the image information output to the second region having the shape.

Here, the preset threshold range means a range of 'Best Zone' described with reference to FIG. Therefore, if the detected range of the user exceeds the threshold range, the detected position of the user is far away from the display unit 170, and the curved shape of the second area of the display unit 170 is felt by the user as it is, Quot ;, and " view "

In this regard, FIGS. 6A and 6B are diagrams for explaining compensation of a screen by nonlinear scaling when a viewing position of a user is longer than a critical range in an image display apparatus according to an embodiment of the present invention.

For this purpose, the controller 150 outputs the image information of the first area of the display unit 170 as it is, and sets the image information output to the second area having the curved shape to be overscanned so as to be scaled down do.

Accordingly, the controller 150 can non-linearly compensate the scaling of the first area having a flat shape and the scaling of the second area having a curved shape in the display unit 170. [

For example, as shown in FIG. 6A, when the user views the display unit 170 having a curved shape in at least one area from afar, the viewer views the entirely concave shape image. Thus, in the embodiment of the present invention , The number of pixels of the pre-stored scaling look-up table (not shown) is adjusted as shown in Figs. 6B and 6C. Specifically, the pixels of the first area of the flat shape maintain the scaling, and the pixels of the second area of the curved shape set to be scaled down (FIG. 6 (a)). If the non-linear compensation is performed as described above, the whole is seen to be flat and the user's immersion feeling is improved (FIG. 6B (b)).

At this time, as the degree of the detected distance value exceeds the predetermined threshold range, that is, as the user moves away from the display unit 170, the controller 150 calculates the luminance compensation value for the second region having a curved shape Further increase.

To this end, the controller 150 sets the scaling down of the pixels of the second area having a curved shape to be larger as the position of the user moves away from the display unit 170. [ At this time, the degree of scaling down of the second area corresponding to the position of the user may be stored in advance in a predetermined table.

If the user is located on the side of the display unit 170 in the step S404 and the viewing angle of the detected user is less than the predetermined threshold value, the controller 150 controls the display unit 170 to display the image And changes the size of the object displayed in the second area.

In this regard, FIGS. 7A to 7D are conceptual diagrams for explaining how an object displayed on a screen is moved or resized when a viewing angle of a user is smaller than a threshold value in an image display apparatus according to an embodiment of the present invention .

Here, the predetermined threshold is a threshold value at which a brightness ratio of an image is lower than that of another region when a user located on a side of the display unit 170 views the second region of the display unit 170. At this time, the viewing angle of the user becomes smaller as the position of the detected user is on the side and closer to the display unit 170.

Here, the object displayed on the screen includes, for example, an execution icon of an application, a menu, an indicator, and a soft key for controlling the screen.

On the other hand, in another example, in order to correct an image deteriorated when a user located on the side faces the second area of the display unit 170, the controller 150 may display the object displayed in the second area in a flat shape Can be displayed in the first area.

Here, the second region having a curved shape may include a plurality of regions separated from each other around a first region having a flat shape. That is, the plurality of second regions may extend from both ends of the first region and be disposed at positions opposed to each other.

7A, when a user views an image on the first side (left side), a second region (i.e., a left display region having a curved shape) near the first side, The brightness ratio in the corresponding region is lowered. On the other hand, when the user views the image on the second side (right side) as shown in Fig. 7A (B), the user can see the image in the second area close to the second side Since the viewing angle is narrower, the brightness ratio in the corresponding area is lowered.

That is, the control unit 150 determines that the user's position (or face, pupil) recognized through the photographing unit 190 exists on the side of the display unit 170 and the viewing angle of the detected user is greater than a predetermined threshold It is possible to display objects (e.g., application execution icons) output in the second area close to the user's location in the second area far from the user's location. At this time, the objects may be disposed at positions opposed to before the movement.

Referring to FIG. 7B, it can be seen that as the position of the user with respect to the display unit 170 is positioned on the side, the viewing angle becomes narrower, and as the position is located at the center, the viewing angle widens. Accordingly, it can be seen that the dimming control value at a position or a region close to the user's position becomes larger as shown in FIG. 7C. With or without such a dimming control, as shown in FIG. 7D, objects located at a point or area close to the user's location, e.g., application execution icons, Moves away from the user.

On the other hand, in another example, the objects displayed in the second area can be arranged based on the sight direction of the user recognized through the photographing unit 190. [

Specifically, when the user is located on the side of the display unit 170, and the viewing angle of the detected user is less than a predetermined threshold value, the control unit 150 displays the user's gaze The object displayed in the corresponding area is displayed in the " opposed position "

That is, when the user is located on the side of the display unit 170 and gazes at the second region far from the user's position, even if the detected viewing angle of the user is less than the predetermined threshold value, the brightness ratio is not extremely decreased Keep the objects displayed in the area or correct only the degraded image quality.

In order to correct an image deteriorated when a user located on a side of the display unit 170 views the second area of the display unit 170, the controller 150 outputs the image information of the second area far from the user's position as it is , The image information output to the second area close to the user's position may be controlled by local dimming or pixel control to increase the brightness ratio.

Here, the local dimming control is performed by, for example, an LED display module or a backlight unit using a light emitting diode (LED) or the like as a light source on the back surface of a display panel, Thereby compensating for the brightness and the brightness ratio. On the other hand, pixel control refers to changing the pixel data value in which the brightness ratio falls to a value corresponding to gray or black.

In the embodiment according to the present invention, secondary local dimming or pixel control is performed based on the detected viewing position and viewing angle of the user in a state where basic local dimming control is performed through the LED display module or the LED backlight unit.

At this time, the controller 150 may control the brightness ratio of the local dimming control or the pixel control to be larger for the image information output to the plurality of second areas as the detected viewing angle of the user is smaller than the threshold value.

Meanwhile, it is preferable that the size change, the movement display, the local dimming control or the pixel control for the image quality correction or scaling for the image quality correction or the scaling are performed automatically when the above-described conditions are satisfied. However, Command. ≪ / RTI >

If the distance between the user and the display unit 170 is less than a preset threshold range, that is, if the viewing distance of the user is close to the display unit 170 in step S404, (Graphic User Interface) for controlling the image information is displayed on the lower side of the display unit 170 or a bezel (not shown) formed along the front edge of the display unit.

In this regard, FIGS. 8A and 8B show a GUI (Graphic User Interface) for controlling a screen when a viewing position of a user is closer to a preset threshold range in an image display apparatus according to an embodiment of the present invention. .

As shown in FIG. 8A, when the user approaches the display unit 170 very close to the display unit 170, the image displayed on the display unit 170 is not entirely visible. In this case, the control unit 150 may determine that the user wants to control the image output to the display unit 170, or that the image displayed on the display unit 170 shows interest in the specific object.

8B, a GUI (Graphic User Interface) 810 for controlling image information is provided at a lower end of the display unit 170 or at a lower end of a bezel (not shown), for example, A menu icon, an indicator including EPG information, a soft key such as a channel change or volume control key, and the like.

Also, the controller 150 may display a hidden GUI when a predetermined type of touch or proximity touch is detected in the lower area of the display unit 170 or the bezel unit. At this time, a light emission effect using an LED element may be outputted around the GUI.

At this time, the control unit 150 may output the GUI (Graphic User Interface) to a corresponding point or area according to the position of the user recognized through the photographing unit 190. [

When the user's gaze recognized through the photographing unit 190 is fixed to a specific object of the display unit 170 for a predetermined period of time (for example, five seconds), the control unit 150 displays interest It is possible to output a pop-up window or search result for additional search related to the object on the lower or side of the display unit 170. [

Meanwhile, in the embodiment of the present invention, when the distance value between the user and the display unit 170 is out of a predetermined threshold range or the viewing angle of the detected user is smaller than a predetermined threshold value, that is, When the image is distorted or the image quality deteriorates, the controller 170 outputs a predetermined alarm for guiding the user to the area having the smallest luminance compensation value for the image information output to the display unit 170, can do.

Here, the predetermined alarm may be any one of a voice guidance, a vibration to the space remote control 200, a message to the display unit 170, or an image display mode.

Also, the controller 150 may determine whether the image correction mode has been entered before performing the image correction described above.

The control unit 150 controls the display unit 170 to display predetermined image information on the display unit 170 in response to a predetermined user input (e.g., a specific key input, a voice command, or a gesture input using the space remote control 200) The display unit 170 enters an image correction mode for correcting the image information.

At this time, a predetermined alarm for notifying the entry into the image correction mode is outputted, or an alarm indicating that the image correction mode is in operation (for example, an indicator indicating that the image is being corrected or a notification sound) may be output. When the image correction is completed, the controller 150 outputs a corresponding alarm or an indicator indicating that the image correction mode is in the state of disappearing from the screen.

Hereinafter, an operation method of the image display apparatus according to another embodiment of the present invention will be described with reference to FIG. Here, the display unit 170 of the image display apparatus 100 according to the embodiment of the present invention includes a first region having a flat shape and a second region having a curved shape, and the curvature R ) Can be modified by a predetermined control signal.

Referring to FIG. 9, first, in the display unit 170, image information is output to a first area having a flat shape and a second area having a curved shape (S901). At this time, as described above, one image information is output, different image information is output, or image information is output to the first area and is output to the first area in the second area, as described above, in the first and second areas A control key for controlling the video information can be output.

When the predetermined user input is detected, the control unit 150 recognizes that the image correction mode for the image information output to the display unit 170 is entered (S901). At this time, an alarm is displayed on the display unit 170 and the audio output unit 180 indicating that the image is being corrected and the image is being corrected (S903).

In this manner, when the image correction mode is entered, the control unit 150 drives the photographing unit 190 to recognize the position of the user (or the user's face or the user's eyes) (S904). The image display apparatus 100 detects a distance value between the user and the display unit 170 and a viewing angle of the user with respect to the display unit 170 based on the recognized user's position (S905).

Then, the control unit 150 of the image display apparatus 100 adjusts the degree of curvature of the second region having a curved shape on the display unit 170 based on the detected distance value and the viewing angle (S906).

The image display apparatus 100 includes an actuator (not shown) connected to the back cover 175 for supporting the shape of the display unit 170 at the rear of the display unit 170, 198, Figure 1). Further, the control unit 150 outputs a control signal for controlling the operation of the actuator 198 based on the detected distance value and the viewing angle, and provides the control signal to the actuator 198.

In this case, in the case where the second region having a curved shape is a plurality of regions separated from each other around the first region having a flat shape, the image display apparatus 100 according to the embodiment of the present invention may have a degree of curvature The first actuator and the second actuator for respectively adjusting the first and second actuators.

When the plurality of actuators are provided as described above, the controller 150 controls the first and second actuators to control the operations of the first and second actuators, respectively, based on the detected distance value and the viewing angle of the user. .

Specifically, when the user is located on the side with respect to the display unit 170 and the viewing angle of the detected user is less than the predetermined threshold value, the luminance value of the image output to the second region close to the user's position is lowered do.

The control unit 150 changes the degree of warping of the second region closer to the position of the user among the plurality of second regions to a first value (warp can be '0' or 'negative value') And controls the operations of the first and second actuators so as to change the degree of warping of the second region away from the position of the user to a second value larger than the first value. Thereby, the image outputted to the second area far from the user's position can be watched with immersion from the side.

In addition, the control unit 150 may apply different local dimming control or pixel control compensation values to image information output to a second area close to the user's location and a second area remote from the user's location have. That is, a dimming value for an image output to the second area close to the position of the user can be largely applied.

In addition, if the user is located close to the display unit 170, the controller 150 may output a control signal to the first and second actuators so that the plurality of second regions are further bent forward. Thus, the immersion feeling of the user can be further improved.

On the other hand, if the user is located far away from the display unit 170, the controller 150 transmits a control signal to the first and second actuators to control the warping so that the plurality of second regions are similar to or the same as the flat shape Can be output. Thus, the problem that the image is seen concave when the user looks at the display unit 170 can be solved.

The degree of warping of the second area may be determined according to the type of image information output to the display unit 170. [ For example, if the genre of the image information is more important to the user's immersion feeling, such as a movie, the controller 150 can control the second region to be further bent forward.

The degree of curvature of the second area may be determined by the number of users viewing the image output to the display unit 170. [ For example, in the case where one person views an image as a result of recognition by the photographing unit 190, the second region is bent more forward by giving importance to immersion, and when a plurality of people watch an image together, The warpage can be adjusted so as to be similar to or the same as that of the flat shape of FIG.

On the other hand, the adjustment of the degree of warping of the second region having such a curved shape can be made based on other sensor values.

To this end, the image display apparatus 100 according to the embodiment of the present invention includes a sensing unit (not shown) capable of sensing at least one of the amount of light, the direction of light, Time). Alternatively, the image display apparatus 100 may receive a signal corresponding to at least one of an amount of light sensed through an external sensor (not shown), a direction of light, and an ambient illuminance.

Then, the control unit 150 controls the first and second areas to output the first and second areas based on at least one of the detected amount of light, the direction of the light, and the surrounding illuminance, and the detected distance value and the viewing angle. The luminance compensation value of the image information is differently applied.

As described above, according to the image display apparatus and the method of operating the image display apparatus according to the present invention, it is possible to enhance the viewing immersion feeling of the user and to provide the optimum image quality according to the viewing angle of the user or the position of the user It is possible to provide image quality without deterioration at any point or at any viewing angle by applying different luminance compensation values. For this purpose, the image displayed on the display unit is non-linearly scaled or local dimming control or pixel control is performed according to the viewing position of the user. In addition, the objects in the area where the luminance is low are shifted to another area where the cyanity is ensured or the size is changed according to the viewing angle viewed by the user. Alternatively, the degree of warpage of the display unit may be changed in hardware depending on the surrounding illuminance and the viewing position of the user, thereby providing a convenient environment for the user.

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 (19)

Back cover;
A display unit including a first area and a second area extending from both ends of the first area and being bent forward so as to correspond to the shape of the back cover and outputting image information to the first area and the second area;
A photographing unit for recognizing a position of a user in a predetermined range based on the display unit;
A detector for detecting a distance value between the display units and a viewing angle of the user with respect to the display unit based on the recognized user's position;
And a controller for applying different luminance compensation values of the image information output to the first and second areas based on the detected distance value and the viewing angle. The method according to claim 1,
Wherein,
When the detected distance value exceeds a preset threshold range,
And compensates nonlinearly the image information output to the second area to correct the distortion of the image information. 3. The method of claim 2,
Wherein,
Wherein the non-linear compensation is performed by outputting the image information of the first area as it is and setting the image information output to the second area as an over scan so as to be scaled down. Video display device. 3. The method of claim 2,
Wherein,
And increases the luminance compensation value for the second area as the degree of the detected distance value exceeds the threshold range. The method according to claim 1,
Wherein,
When the user is located on the side with respect to the display unit and the viewing angle of the detected user is less than the predetermined threshold value,
Wherein the controller controls to change the size of the object displayed in the second area among the image information output to the display unit and to output the changed size. The method according to claim 1,
Wherein,
When the user is located on the side with respect to the display unit and the viewing angle of the detected user is less than the predetermined threshold value,
And controls the display unit to display an object displayed in the second area of the image information output to the display unit in the first area. The method according to claim 6,
The photographing unit further recognizes the direction of the user's gaze,
Wherein,
When the user is located on the side with respect to the display unit and the viewing angle of the detected user is less than the predetermined threshold value,
And controls the object displayed in the second area to be displayed at a position opposite to a direction of the user's eyes. The method according to claim 1,
Wherein the second region includes a plurality of regions separated from each other around the first region,
Wherein,
When the user is located on the side with respect to the display unit and the viewing angle of the detected user is less than the predetermined threshold value,
And moves an object displayed in a second area close to the user's position to a second area far from the user's location. 9. The method of claim 8,
Wherein,
The image information of the second area far from the user's position is outputted as it is and the image information outputted to the second area close to the position of the user is subjected to dimming control or pixel control so as to increase the brightness ratio. . 10. The method of claim 9,
Wherein,
And controls the brightness ratio according to the local dimming control or the pixel control to be larger for the image information output to the plurality of second areas as the detected viewing angle of the user is smaller than the threshold value. The method according to claim 1,
Wherein,
If the detected distance value is less than a predetermined threshold range,
And controls the display unit to display a graphic user interface (GUI) for controlling the image information in a lower area of a bezel formed along a front edge of the display unit. 12. The method of claim 11,
Wherein,
Wherein the control unit controls the hidden GUI to be displayed when a predetermined touch or proximity touch is detected in the lower area and to output a light emission effect using the LED device around the GUI. The method according to claim 1,
Wherein,
When the detected distance value is out of a preset threshold range or when the detected user's viewing angle is smaller than a predetermined threshold value,
And outputs a predetermined alarm for guiding the user to an area having the smallest luminance compensation value for the image information. The method according to claim 1,
Wherein,
Wherein the control unit controls the display unit to enter an image correction mode for correcting the image information output to the display unit and output an alarm indicating the image correction mode when the predetermined user input is applied. The method according to claim 1,
Further comprising an actuator coupled to the back cover for adjusting a degree of warping of the second region.
Wherein,
And outputs a control signal for controlling the operation of the actuator based on the detected distance value and the viewing angle. 16. The method of claim 15,
Wherein the second region includes a plurality of regions separated from each other around the first region,
Further comprising a first actuator and a second actuator connected to the back cover for respectively adjusting a degree of warping of the plurality of second regions,
Wherein,
And outputs first and second control signals for respectively controlling the operations of the first and second actuators based on the detected distance value and the viewing angle of the detected user. 17. The method of claim 16,
When the user is located on the side with respect to the display unit and the viewing angle of the detected user is less than the predetermined threshold value,
Wherein,
Changing the degree of warping of the second region closer to the position of the user among the plurality of second regions to the first value and changing the degree of warping of the second region farther away from the position of the user to a second value larger than the first value And controls operations of the first and second actuators, respectively. The method according to claim 1,
And a sensing unit for sensing at least one of an amount of light applied to the first and second areas of the display unit, a direction of the light, and a surrounding illuminance,
Wherein,
The luminance compensation value of the image information output to the first and second areas is controlled differently based on at least one of the detected amount of light, the direction of light, and the ambient illuminance, and the detected distance value and viewing angle To be displayed. Outputting image information to a display unit including a first area and a second area extending from both ends of the first area and being bent forward in correspondence with the shape of the back cover;
Recognizing a position of a user within a predetermined range based on the display unit;
Detecting a distance value between the display units and a viewing angle of the user with respect to the display unit based on the recognized user's position; And
And controlling the luminance compensation values of the image information output to the first and second areas differently based on the detected distance value and the viewing angle.

Images