KR20160073742A - Display device and method for controllingthe same - Google Patents

Abstract

Disclosed are a display device and a method for controlling the same, which enable resolution of a display device to be variably applied based on an input image. A display device according to an embodiment of the present invention comprises: a reception unit which receives image data; a display unit which includes unit pixels each constituted by four sub-pixels; and a control unit. The control unit detects a pattern of an object in an image frame corresponding to the received image data, determines a direction of arrangement of the four sub-pixels constituting each of the unit pixels in the display unit to be any one of a first direction and a second direction different from the first direction based on the detected pattern of the object, and renders the image data so that the four sub-pixels arranged in the determined direction constitute each of the unit pixels.

Description

DISPLAY DEVICE AND METHOD FOR CONTROLLING THERE "

The present invention relates to a display device and a control method thereof.

A display device such as a liquid crystal display device comprises R (Red) subpixel, G (Green) subpixel, and B (Blue) subpixel for color representation. Recently, a module in which W (White) subpixels are added to RGB subpixels is also used for display devices. When W subpixels are added to the existing RGB subpixels, the power consumption of the display device can be reduced when a gray level image is displayed. Since four subpixels can be divided into four subpixels, Low consumption. However, since the size of a unit pixel is increased by adding a W subpixel, there is a problem that the resolution in a predetermined direction is reduced in a display device of the same inch than in a case of using only a conventional RGB subpixel.

The present invention is directed to solving the above-mentioned problems and other problems. Another object of the present invention is to provide a display device and a control method thereof that can variably apply a resolution of a display device according to an input image.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

A display device according to an embodiment of the present invention includes a receiving unit for receiving image data, a display unit including unit pixels composed of four sub-pixels, and a control unit, The method comprising the steps of: detecting a pattern of an object in a corresponding video frame; and based on the detected object pattern, arranging directions of four sub-pixels constituting each unit pixel in the display unit in a first direction or in a first direction And the image data is rendered so that four subpixels arranged in the determined direction constitute the unit pixel.

A method of controlling a display device according to an embodiment of the present invention includes receiving image data, detecting a pattern of an object in an image frame corresponding to the received image data, Determining a direction of arrangement of four subpixels constituting each unit pixel in the display unit as either a first direction or a second direction different from the first direction; And rendering the image data such that subpixels constitute the unit pixel.

Effects of the display and the control method according to the present invention will be described as follows.

Embodiments of the present invention can provide a display device and a control method thereof that can variably apply the resolution of a display device according to an input image.

Further scope of applicability of the present invention will become apparent from the following detailed description. It should be understood, however, that the detailed description and specific examples, such as the preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art.

FIG. 1 is a schematic diagram illustrating a service system including a display device according to an exemplary embodiment of the present invention. Referring to FIG.
2 is a block diagram illustrating a display device according to an exemplary embodiment of the present invention.
3 is a block diagram illustrating a detailed configuration of the controller of FIG. 2 according to an embodiment of the present invention.
Figure 4 is a diagram illustrating input means coupled to the display device of Figure 2 in accordance with one embodiment of the present invention.
5 is a block diagram showing an example of a configuration module of a control unit of a display device according to an embodiment of the present invention.
6 is a diagram illustrating a structure of a pixel of a display unit included in a display device according to an embodiment of the present invention.
7 is a flowchart illustrating an example of a method of rendering input image data in a display device according to an exemplary embodiment of the present invention.
8 is a view for explaining an example of a method of adjusting a resolution of a display unit according to a pattern of an object in input image data in a display device according to an embodiment of the present invention.
9 is a view for explaining another example of a method of adjusting a resolution of a display unit according to a pattern of an object in input image data in a display device according to an embodiment of the present invention.
10 is a diagram for explaining another example of a method of adjusting a resolution of a display unit according to a pattern of an object in input image data in a display device according to an embodiment of the present invention.
11 is a view for explaining another example of a method of adjusting a resolution of a display unit according to a pattern of an object in input image data in a display device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

FIG. 1 is a schematic diagram illustrating a service system including a display device according to an exemplary embodiment of the present invention. Referring to FIG.

1, a service system includes a content provider 10, a service provider 20, a network provider 30, and a Home Network End User (HNED) (40). Here, the HNED 40 includes, for example, a client 100, i.e., a display device according to the present invention.

The content provider 10 produces and provides various contents. As shown in FIG. 1, the content provider 10 may include a terrestrial broadcast sender, cable SO (System Operator) or MSO (Multiple SO), satellite broadcast sender, various Internet broadcast senders, Content providers, and the like. On the other hand, the content provider 10 can produce and provide various services and applications in addition to the broadcast content.

The service provider 20 provides service packetizing the content produced by the content provider 10 to the HNED 40. [ For example, the service provider 20 packages at least one of the first terrestrial broadcast, the second terrestrial broadcast, the cable MSO, the satellite broadcast, various Internet broadcasts, 40).

The service provider 20 provides services to the client 100 in a uni-cast or multi-cast manner. Meanwhile, the service provider 20 can simultaneously transmit data to a plurality of clients 100 registered in advance, and an Internet Group Management Protocol (IGMP) protocol or the like can be used for this purpose.

The above-described content provider 10 and the service provider 20 may be the same entity. For example, the service provider 20 may also perform the functions of the service provider 20 by providing the content produced by the content provider 10 in a service package to the HNED 40, or vice versa.

The network provider 30 provides a network for exchanging data between the content provider 10 and / or the service provider 20 and the client 100.

The client 100 is a consumer belonging to the HNED 40. The client 100 constructs a home network through the network provider 30 to receive data and transmits data related to various services and applications such as VoD and streaming It can also transmit / receive.

On the other hand, the content provider 10 and / or the service provider 20 in the service system can use conditional access or content protection means to protect the transmitted content. Accordingly, the client 100 can use a processing means such as a cable card (or a POD: Point of Deployment), a DCAS (Downloadable CAS) or the like in response to the restriction reception or the content protection.

In addition, the client 100 can use the two-way service through the network. Accordingly, the client 100 may rather perform the role or function of the content provider, and the service provider 20 may receive it and transmit the same to another client or the like.

In FIG. 1, the content provider 10 and / or the service provider 20 may be a server that provides a service described later in this specification. In this case, the server may also mean to own or include network provider 30 as needed. The service or service data includes an internal service or an application as well as a service or an application received from the outside, and the service or the application data may mean service or application data for the client 100 .

2 is a block diagram illustrating a display device according to an exemplary embodiment of the present invention.

2, the display device 200 includes a broadcast receiving unit 205, an external device interface unit 235, a storage unit 240, a user input interface unit 250, a control unit 270, a display unit 280 An audio output unit 285, a power supply unit 290, and a photographing unit (not shown). The broadcast receiver 205 may include at least one tuner 210, a demodulator 220, and a network interface 230. In some cases, the broadcast receiver 205 may include the tuner 210 and the demodulator 220, but may not include the network interface 230, or vice versa. Although not shown, the broadcast receiver 205 includes a multiplexer to receive a signal demodulated by the demodulator 220 via the tuner 210 and a signal received via the network interface 230 May be multiplexed. In addition, although not shown, the broadcast receiver 225 may include a demultiplexer to demultiplex the multiplexed signals or to demultiplex the demodulated signals or the signals transmitted through the network interface 230 .

The tuner 210 tunes a channel selected by a user or all pre-stored channels among RF (Radio Frequency) broadcast signals received through an antenna and receives RF broadcast signals. Also, the tuner 210 converts the received RF broadcast signal into an intermediate frequency (IF) signal or a baseband signal.

For example, if the received RF broadcast signal is a digital broadcast signal, the signal is converted into a digital IF signal (DIF). If the received RF broadcast signal is an analog broadcast signal, the signal is converted into an analog baseband image or a voice signal (CVBS / SIF). That is, the tuner 210 can process both a digital broadcast signal and an analog broadcast signal. The analog baseband video or audio signal (CVBS / SIF) output from the tuner 210 can be directly input to the controller 270.

Also, the tuner 210 can receive RF broadcast signals of a single carrier or a multiple carrier. Meanwhile, the tuner 210 sequentially tunes and receives RF broadcast signals of all the broadcast channels stored through the channel memory function among the RF broadcast signals received through the antenna, converts the RF broadcast signals into intermediate frequency signals or baseband signals (DIF: Digital Intermediate Frequency or baseband signal).

The demodulation unit 220 may receive and demodulate the digital IF signal DIF converted by the tuner 210 and perform channel decoding. For this, the demodulator 220 may include a trellis decoder, a de-interleaver, a Reed-Solomon decoder, or a convolution decoder, a deinterleaver, - Solomon decoder and the like.

The demodulation unit 220 can demodulate and decode the channel, 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 may be an MPEG-2 TS (Transport Stream) multiplexed with an MPEG-2 standard video signal, a Dolby AC-3 standard audio signal, or the like.

The stream signal output from the demodulation unit 220 may be input to the controller 270. The control unit 270 controls demultiplexing, video / audio signal processing, and the like through the display unit 280 and audio output through the audio output unit 285.

The external device interface unit 235 provides an interface environment between the display device 200 and various external devices. To this end, the external device interface unit 235 may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The external device interface unit 235 is connected to the external device interface unit 235 through a communication unit such as a DVD (Digital Versatile Disk), a Blu-ray, a game device, a camera, a camcorder, a computer (notebook), a tablet PC, a smart phone, device, an external device such as a cloud, or the like. The external device interface unit 235 transmits a signal including data such as image, image, and voice input through the connected external device to the controller 470 of the digital device. The control unit 270 may control the processed image, video, audio, and the like to be output to an external device to which the data signal is connected. To this end, the external device interface unit 435 may further include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The A / V input / output unit includes a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, an S-video terminal (analog) terminal, A DVI (Digital Visual Interface) terminal, an HDMI (High Definition Multimedia Interface) terminal, an RGB terminal, a D-SUB terminal, and the like.

The wireless communication unit can perform short-range wireless communication with another external device. The display device 200 may be implemented in a wireless communication system such as Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, Digital Living Network Alliance (DLNA) Lt; RTI ID = 0.0 > and / or < / RTI > other communication protocols.

Also, the external device interface unit 235 may be connected to the set-top box (STB) through at least one of the various terminals described above to perform input / output operations with the set-top box (STB).

Meanwhile, the external device interface unit 235 may receive an application or an application list in an adjacent external device, and may transmit the received application or application list to the control unit 270 or the storage unit 240.

The network interface unit 230 provides an interface for connecting the display device 200 to a wired / wireless network including the Internet network. The network interface unit 230 may include an Ethernet terminal or the like for connection to a wired network and may be a WLAN (Wireless LAN) (Wi- Fi, Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), and HSDPA (High Speed Downlink Packet Access) communication standards.

The network interface unit 230 can transmit or receive data to another user or another external device via the network to which it is connected or another network linked to the connected network. Particularly, it is possible to transmit a part of content data stored in the display device 200 to another user registered in the display device 200 or a selected one of the other external devices or a selected external device.

On the other hand, the network interface unit 230 can access a predetermined web page through the connected network or another network linked to the connected network. That is, it is possible to access a predetermined web page through a network and transmit or receive data with the server. In addition, content or data provided by a content provider or a network operator may be received. That is, it can receive content and related information of a movie, an advertisement, a game, a VOD, a broadcast signal, and the like provided from a content provider or a network provider through a network. In addition, it can receive update information and an update file of firmware provided by the network operator. It may also transmit data to the Internet or a content provider or network operator.

In addition, the network interface unit 230 can select and receive a desired application from the open applications through the network.

The storage unit 240 may store a program for each signal processing and control in the control unit 270 or may store a signal-processed video, audio, or data signal.

The storage unit 240 may also function to temporarily store video, audio, or data signals input from the external device interface unit 235 or the network interface unit 230. The storage unit 240 may store information on a predetermined broadcast channel through the channel memory function.

The storage unit 240 may store a list of applications or applications input from the external device interface unit 235 or the network interface unit 230.

In addition, the storage unit 240 may store various platforms described later.

The storage unit 240 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD Memory, etc.), RAM (RAM), and ROM (EEPROM, etc.). The digital device 400 may reproduce and provide a content file (a moving image file, a still image file, a music file, a document file, an application file, etc.) stored in the storage unit 240 to a user.

FIG. 2 illustrates an embodiment in which the storage unit 440 is provided separately from the controller 270, but the present invention is not limited thereto. In other words, the storage unit 240 may be included in the control unit 270.

The user input interface unit 250 transfers a signal input by the user to the controller 270 or a signal from the controller 270 to the user.

For example, the user input interface unit 250 may control power on / off, channel selection, and screen setting from the remote control device 400 according to various communication methods such as an RF communication method and an infrared (IR) And may transmit the control signal of the control unit 270 to the remote control device 400. [

The user input interface unit 250 may transmit a control signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a set value to the controller 270.

The user input interface unit 250 transmits a control signal input from a sensing unit (not shown) that senses a gesture of a user to the control unit 270, (Not shown). Here, the sensing unit (not shown) may include a touch sensor, an audio sensor, a position sensor, an operation sensor, and the like.

The control unit 270 generates a signal for video or audio output by demultiplexing or demultiplexing a stream input through the tuner 210, the demodulation unit 220, or the external device interface unit 235 And can output.

The video signal processed by the control unit 270 may be input to the display unit 280 and displayed as an image corresponding to the video signal. In addition, the image signal processed by the controller 270 can be input to the external output device through the external device interface unit 235.

The audio signal processed by the control unit 270 may be audio-output to the audio output unit 285. Also, the voice signal processed by the control unit 270 can be input to the external output device through the external device interface unit 235.

Although not shown in FIG. 2, the control unit 270 may include a demultiplexing unit, an image processing unit, and the like.

The control unit 270 can control the overall operation of the display device 200. [ For example, the control unit 270 may control the tuner 210 to control tuning of a RF broadcast corresponding to a channel selected by the user or a previously stored channel.

The control unit 270 can control the display device 200 according to a user command or an internal program input through the user input interface unit 250. In particular, the user can access a network and allow a user to download a desired application or application list into the display device 200.

For example, the controller 270 controls the tuner 210 to input a signal of a selected channel according to a predetermined channel selection command received through the user input interface unit 250. And processes video, audio or data signals of the selected channel. The control unit 270 allows the display unit 280 or the audio output unit 285 to output the video or audio signal processed by the user through the channel information or the like selected by the user.

The control unit 270 controls the operation of the external device via the external device interface unit 235 according to an external device video playback command received through the user input interface unit 250. For example, So that the video signal or the audio signal of the audio signal output through the display unit 280 or the audio output unit 285 can be outputted.

Meanwhile, the control unit 270 may control the display unit 280 to display an image. For example, a broadcast image input through the tuner 210, an external input image input through the external device interface unit 235, an image input through the network interface unit, or an image stored in the storage unit 240 , And display on the display unit 280. At this time, the image displayed on the display unit 280 may be a still image or a moving image, and may be a 2D image or a 3D image.

Also, the control unit 270 can control to reproduce the content. The content at this time may be content stored in the display device 200, received broadcast content, or external input content input from the outside. The content may be at least one of a broadcast image, an external input image, an audio file, a still image, a connected web screen, and a document file.

On the other hand, when entering the application view item, the control unit 270 can control to display a downloadable application or a list of applications from the display device 200 or an external network.

The control unit 270 can control, in addition to various user interfaces, to install and operate an application downloaded from an external network. Further, it is possible to control the display unit 280 to display an image related to the executed application by the user's selection.

Although not shown in the drawing, a channel browsing processing unit for generating a channel signal or a thumbnail image corresponding to an external input signal may be further provided.

The channel browsing processing unit receives a stream signal TS output from the demodulation unit 220 or a stream signal output from the external device interface unit 235 and extracts an image from an input stream signal to generate a thumbnail image . The generated thumbnail image may be encoded as it is or may be input to the controller 270. In addition, the generated thumbnail image may be encoded in a stream format and input to the controller 270. The control unit 270 may display a thumbnail list including a plurality of thumbnail images on the display unit 280 using the input thumbnail images. On the other hand, the thumbnail images in this thumbnail list can be updated in sequence or simultaneously. Accordingly, the user can easily grasp the contents of a plurality of broadcast channels.

The display unit 280 converts an image signal, a data signal, an OSD signal processed by the control unit 270 or a video signal and a data signal received from the external device interface unit 235 into R, G, and B signals, respectively Thereby generating a driving signal.

The display unit 280 may be a PDP, an LCD, an OLED, a flexible display, a 3D display, or the like.

On the other hand, the display unit 280 may be configured as a touch screen and used as an input device in addition to the output device.

The audio output unit 285 receives a signal processed by the control unit 270, for example, a stereo signal, a 3.1 channel signal, or a 5.1 channel signal, and outputs it as a voice. The audio output unit 285 may be implemented by various types of speakers.

Meanwhile, in order to detect the user's gesture, a sensing unit (not shown) having at least one of a touch sensor, an audio sensor, a position sensor, and an operation sensor may be further included in the display device 200 . The signal sensed by the sensing unit (not shown) may be transmitted to the controller 270 through the user input interface unit 250.

On the other hand, a photographing unit (not shown) for photographing a user may be further provided. The image information photographed at the photographing unit (not shown) may be input to the control unit 270. [

The control unit 270 may sense a gesture of the user by combining the images captured by the photographing unit (not shown) or the signals sensed by the sensing unit (not shown).

The power supply unit 290 supplies the corresponding power supply throughout the display device 200.

Particularly, it is possible to supply power to a control unit 270 that can be implemented in the form of a system on chip (SoC), a display unit 280 for displaying an image, and an audio output unit 285 for audio output .

To this end, the power supply unit 290 may include a converter (not shown) for converting AC power to DC power. For example, when the display unit 280 is implemented as a liquid crystal panel having a plurality of backlight lamps, an inverter (not shown) for PWM (Pulse Width Modulation) operation for variable luminance or dimming driving and an inverter (not shown).

The remote control device 400 transmits the user input to the user input interface unit 250. To this end, the remote control device 400 may use Bluetooth, RF (radio frequency) communication, infrared (IR) communication, UWB (Ultra Wideband), ZigBee, or the like.

Also, the remote control device 400 can receive the video, audio, or data signal output from the user input interface unit 250, display it on the remote control device 400, or output sound or vibration.

The display device 200 may be a digital broadcasting receiver capable of processing digital broadcasting signals of fixed or mobile type ATSC or DVB.

In addition, the display device according to the present invention may further include a configuration that omits some of the configuration shown in FIG. On the other hand, the display device may not receive the tuner and the demodulator, and may receive and reproduce the content through the network interface unit or the external device interface unit.

3 is a block diagram illustrating a detailed configuration of the controller of FIG. 2 according to an embodiment of the present invention.

One example of the control unit 270 includes a demultiplexing unit 310, an image processing unit 320, an OSD generating unit 340, a mixer 350, a frame rate converter (FRC) 355 ), And a formatter 360. The formatter 360 may be any type of device. The control unit may further include a voice processing unit and a data processing unit.

The demultiplexer 310 demultiplexes the input stream. For example, the demultiplexer 310 demultiplexes the input MPEG-2 TS video, audio, and data signals. Here, the stream signal input to the demultiplexer 310 may be a stream signal output from a tuner, a demodulator, or an external device interface.

The image processing unit 320 performs image processing of the demultiplexed image signal. To this end, the image processing unit 320 may include a video decoder 325 and a scaler 335.

The video decoder 325 decodes the demultiplexed video signal, and the scaler 335 scales the decoded video signal so that the resolution of the decoded video signal can be output from the display unit.

The video decoder 325 may support various standards. For example, the video decoder 325 performs the function of the MPEG-2 decoder when the video signal is encoded in the MPEG-2 standard, and the video decoder 325 encodes the video signal in the DMB (Digital Multimedia Broadcasting) It can perform the function of the H.264 decoder.

On the other hand, the video signal decoded by the image processing unit 320 is input to the mixer 350.

The OSD generating unit 340 generates OSD data according to a user input or by itself. For example, the OSD generating unit 340 generates data for displaying various data in the form of graphic or text on the screen of the display unit 280 based on the control signal of the user input interface unit. The generated OSD data includes various data such as a user interface screen of a digital device, various menu screens, a widget, an icon, and viewing rate information. The OSD generating unit 340 may generate data for displaying broadcast information based on a caption of a broadcast image or an EPG.

The mixer 350 mixes the OSD data generated by the OSD generator 340 and the image signal processed by the image processor, and provides the mixed image to the formatter 360. Since the decoded video signal and the OSD data are mixed, the OSD is overlaid on the broadcast image or the external input image.

A frame rate conversion unit (FRC) 355 converts the frame rate of an input image. For example, the frame rate conversion unit 355 may convert the frame rate of the input 60 Hz image to have a frame rate of 120 Hz or 240 Hz, for example, in accordance with the output frequency of the display unit. As described above, there are various methods for converting the frame rate. For example, when the frame rate is converted from 60 Hz to 120 Hz, the frame rate conversion unit 355 may insert the same first frame between the first frame and the second frame, Three frames can be inserted. In another example, when the frame rate is converted from 60 Hz to 240 Hz, the frame rate conversion unit 355 may insert and convert three or more identical or predicted frames between existing frames. On the other hand, if the frame conversion is not performed, the frame rate conversion unit 355 may be bypassed.

The formatter 360 changes the output of the input frame rate conversion unit 355 to match the output format of the display unit. For example, the formatter 360 may output R, G, and B data signals. The R, G, and B data signals may be output as low voltage differential signals (LVDS) or mini-LVDS . If the output of the frame rate conversion unit 355 is a 3D video signal, the formatter 360 may configure the 3D format according to the output format of the display unit and output the 3D format to support the 3D service through the display unit.

On the other hand, the voice processing unit (not shown) in the control unit can perform the voice processing of the demultiplexed voice signal. Such a voice processing unit (not shown) may support processing various audio formats. For example, even when a voice signal is coded in a format such as MPEG-2, MPEG-4, AAC, HE-AAC, AC-3, or BSAC, a corresponding decoder can be provided.

In addition, the voice processing unit (not shown) in the control unit can process the base, the treble, the volume control, and the like.

A data processing unit (not shown) in the control unit can perform data processing of the demultiplexed data signal. For example, the data processing unit can decode the demultiplexed data signal even when it is coded. Here, the encoded data signal may be EPG information including broadcast information such as a start time and an end time of a broadcast program broadcasted on each channel.

On the other hand, the above-described digital device is an example according to the present invention, and each component can be integrated, added, or omitted according to specifications of a digital device actually implemented. That is, if necessary, two or more components may be combined into one component, or one component may be divided into two or more components. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and devices thereof do not limit the scope of rights of the present invention.

Meanwhile, the digital device may be a video signal processing device that performs signal processing of an image stored in the device or an input image. Other examples of the video signal processing device include a set-top box (STB), a DVD player, a Blu-ray player, a game device, a computer Etc. can be further exemplified.

Figure 4 is a diagram illustrating input means coupled to the display device of Figure 2 in accordance with one embodiment of the present invention.

A front panel (not shown) or a control means (input means) provided on the display device 200 may be used to control the display device 200.

The control means includes a remote controller 410, a keyboard 430, a pointing device 420, and a remote controller 410, which are mainly implemented for the purpose of controlling the display device 200, as a user interface device (UID) A touch pad, or the like, but may also include control means dedicated to external input connected to the display device 200. [ In addition, a control device may include a mobile device such as a smart phone, a tablet PC, or the like that controls the display device 200 through a mode switching or the like but is not a control object of the display device 200. In the following description, a pointing device will be described as an example, but the present invention is not limited thereto.

The input means may be a communication protocol such as Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (UDA), Ultra Wideband (UWB), ZigBee, Digital Living Network Alliance (DLNA) At least one can be employed as needed to communicate with the digital device.

The remote controller 410 is a conventional input unit having various key buttons necessary for controlling the display device 200. [

The pointing device 420 may include a gyro sensor or the like to implement a pointer corresponding to a screen of the display device 200 based on a user's motion, The control command is transmitted. Such a pointing device 420 may be named with various names such as a magic remote controller, a magic controller, and the like.

Since the display device 200 provides a variety of services such as a web browser, an application, and a social network service (SNS) as an intelligent integrated digital device beyond the conventional display device 200, It is not easy, and it is implemented to complement input and realize input convenience such as text by implementing similar to PC keyboard.

On the other hand, the control means such as the remote controller 410, the pointing device 420, and the keyboard 430 may be equipped with a touch pad as required to provide more convenient and various control purposes such as text input, pointer movement, .

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 5 to 11. FIG. The display device described in this specification may be a concept including a TV, a digital TV, a smart TV, an IPTV, an HBBTV, a mobile phone, a smart watch, a tablet PC, a personal computer, a notebook, a netbook, a PDA,

5 is a block diagram showing an example of a configuration module of a control unit of a display device according to an embodiment of the present invention.

The controller 270 of the display device 200 according to an exemplary embodiment of the present invention may include an image supply unit 510, a timing controller 520, a gate driver 530, and a data driver 540. The control unit 270 may further include other configuration modules and at least one of the image supply unit 510, the timing control unit 520, the gate driver 530, and the data driver 540, May be implemented as a configuration module other than the configuration module 270 shown in FIG.

The image supply unit 510 analyzes the input image data and outputs image frame data to the timing controller 520. [ The image frame data includes brightness data of the input image data, pixel data, and the like, and may be analyzed in units of image frames and output to the timing controller 520. The image supply unit 510 also outputs timing signals, such as a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, and a dot clock, to the timing control unit 520.

The image supply unit 510 includes a subpixel rendering unit 511 and a pattern detection unit 512. At least one of the subpixel rendering unit 511 and the pattern detection unit 512 may be implemented separately from the image supply unit 510 according to the embodiment.

The pattern detector 512 analyzes a pattern of an object in an image frame corresponding to the input image data. The pattern detector 512 may analyze an object pattern of all the image frames constituting the image data or may detect an object pattern at predetermined time intervals or at predetermined frames. An object in an image frame may be a concept including a person, an object, a background, or the like expressed through an image frame. The pattern of the object may mean the shape, shape and position of the object. For example, the pattern detector 512 may analyze a pattern of an object in an image frame through an edge detection algorithm. The pattern detector 512 outputs the pattern detection result of the object to the subpixel rendering unit 511.

The subpixel rendering unit 511 converts the input image data to fit the structure of the unit pixels included in the display unit 280 and outputs the converted image data to the image data of each of the subpixels included in the unit pixel Lt; / RTI > For example, when the unit pixel is composed of four subpixels of R / G / B / W, the subpixel rendering unit 511 renders the converted image data as image data of R / G / B / can do.

The subpixel rendering unit 511 varies the array structure of the unit pixels included in the display unit 280 based on the pattern of the detected object input from the pattern detection unit 512, . According to an embodiment of the present invention, the display unit 280 includes unit pixels composed of four subpixels, and the structure of the four subpixels constituting the unit pixels can be varied. For example, according to the embodiment, four subpixels (R / G / B / W subpixels) arranged consecutively in the horizontal direction may constitute one unit pixel, four pixels arranged consecutively in the vertical direction (R / G / B / W subpixels) may constitute one unit pixel. That is, the subpixel rendering unit 511 determines the structure of the four subpixels constituting the unit pixel (for example, four subpixels of the four subpixels) based on the pattern of the detected object input from the pattern detector 512 Array direction) and render the image data according to the determined structure of the subpixel.

The subpixel rendering unit 511 varies the arrangement structure of the unit pixels included in the display unit 280 based on the pattern of the detected object input from the pattern detection unit 512 periodically or aperiodically, The resolution of portion 280 may then vary.

The operation of the subpixel rendering unit 511 will be described later in more detail with reference to FIG. 7 to FIG.

The R / G / B / W image data rendered by the subpixel rendering unit 511 is output to the timing control unit 520 on a frame-by-frame basis.

The timing control unit 520 uses the R / G / B / W image data and the timing signal input from the image supply unit to generate a gate control signal for controlling the driving timing of the gate driver 530, Generates a data control signal for controlling the driving timing, and outputs the generated gate control signal and data control signal to the gate driver 530 and the data driver 540, respectively. According to the embodiment, in order to improve the response speed of the liquid crystal of the display unit 280, the timing controller 520 adds an overshoot value or an undershoot value according to a data difference between adjacent frames, Driving circuit (not shown) for modulating the driving signal.

The gate driver 530 sequentially drives the gate line GL of the display unit 280 according to the gate control signal input from the timing controller 520. [

The data driver 540 selects a reference voltage of the R / G / B / W image data input in response to the data control signal input from the timing controller 520, and supplies the selected reference voltage to the data line (DL) and applied to each sub-pixel, the rotation angle of the liquid crystal molecules can be controlled.

6 is a diagram illustrating a structure of a pixel of a display unit included in a display device according to an embodiment of the present invention.

The display portion 280 of the display device 200 according to an embodiment of the present invention includes a first color subpixel (e.g., R subpixel), a second color subpixel (e.g., a G subpixel ), A third color subpixel (e.g., B subpixel), and a fourth color subpixel (e.g., W subpixel). According to an embodiment, the unit pixel may comprise more or fewer subpixels than four subpixels.

The subpixels of the respective colors included in the display unit 280 may be arranged to be shifted with respect to each other. Means that the subpixels of the same color are arranged in the horizontal direction and / or the vertical direction in the display unit 280, respectively.

In addition, the display unit 280 according to the embodiment of the present invention is not fixed in the arrangement structure of the unit pixels, but may be varied according to the pattern of the object in the image frame corresponding to the input image data. For example, the four subpixels (R / G / B / W) constituting each unit pixel are displayed on the display unit 280 in accordance with the pattern of the object in the image frame corresponding to the input image data. (For example, the longitudinal direction) or a second direction different from the first direction (for example, the lateral direction). That is, four subpixels successively arranged in the first direction may constitute a unit pixel, and four subpixels arranged consecutively in the second direction may constitute a unit pixel.

 According to the embodiment, according to the pattern of the object in the image frame corresponding to the input image data, the four subpixels constituting each unit pixel are arranged in the first direction, and the four subpixels The subpixels may be arranged in a second direction. Alternatively, according to the embodiment, four subpixels constituting each of at least some unit pixels may be arranged diagonally in the display unit 280 according to a pattern of an object in an image frame corresponding to input image data.

Since the resolution of the display unit 280 is determined according to the number of unit pixels, according to the embodiment of the present invention, the arrangement structure of the unit pixels is varied according to the pattern of the object in the image frame corresponding to the input image data, The resolution of the unit 280 can also be varied.

7 is a flowchart illustrating an example of a method of rendering input image data in a display device according to an exemplary embodiment of the present invention.

The control unit 270 of the display device 200 controls the receiving unit 205 to receive the image data (S710). The receiving unit 205 may be a tuner 210 or a network interface unit 230. According to an embodiment, when image data is received from an external device connected through the external device interface unit 235, the external device interface unit 235 may serve as the receiving unit 205. The image data may correspond to at least one of moving image data, still image data, image, panoramic image, and graphic.

The pattern detector 512 of the image supply unit 510 in the controller 270 analyzes the pattern of the object in the image frame corresponding to the received image data (S720). The pattern detector 512 may analyze an object pattern of all the image frames constituting the image data or may detect an object pattern at predetermined time intervals or at predetermined frames.

The subpixel rendering unit 512 of the image supply unit 510 determines the arrangement direction of the four subpixels constituting each of the unit pixels included in the display unit 280 based on the detected pattern of the object (S730).

For example, the subpixel rendering unit 512 may generate a subpixel rendering pattern based on the detected pattern of the object in a first direction (e.g., a vertical direction) or a second direction (e.g., a vertical direction) Horizontal direction) of the sub-pixels may be configured as unit pixels. The subpixel rendering unit 512 may include a subpixel rendering unit that sequentially arranges subpixels in the first direction among the subpixels of the display unit 280 when the pattern of the first direction among the patterns of the detected object is more dominant than the pattern of the second direction If a pattern in the second direction among the patterns of the detected object is more dominant than a pattern in the first direction, it is possible to form a unit pixel using the four subpixels, The unit pixels can be configured using the first subpixel successively arranged along the first subpixel. If the pattern of the detected object has many patterns in the vertical direction, it is necessary to increase the resolution in the horizontal direction in order to utilize the detail of the image. If there are many patterns in the horizontal direction in the detected object pattern, It is necessary to increase the resolution in the vertical direction. This will be described in more detail with reference to FIGS. 8 to 10. FIG.

In another example, when the pattern of the detected object includes both the pattern of the first direction and the pattern of the second direction, the subpixel rendering unit 512 may calculate the pattern of the first direction among the patterns of the detected object A unit pixel is formed by using four sub-pixels continuously arranged along a first direction among the sub-pixels corresponding to the sensed first area, The second region of the display unit 280 corresponding to the pattern of the second direction among the patterns of the detected objects is sensed and the second region of the second region of the detected object is consecutively arranged along the second direction The unit pixel can be constructed using four subpixels. When the pattern of the detected object includes patterns in various directions, the resolution of each region of the display unit 280 is varied in order to maximize the detail of the image. This will be described in more detail with reference to FIG.

The subpixel rendering unit 512 renders the received image data so that four subpixels arranged in the determined direction form unit pixels (S740). That is, the subpixel rendering unit 512 converts the received image data to fit the structure of the unit pixel, and outputs the converted image data to the image data of each of the subpixels arranged in the specific direction in the unit pixel . ≪ / RTI >

Depending on the embodiment, steps S720 through S740 may be repeated periodically or aperiodically.

8 is a view for explaining an example of a method of adjusting a resolution of a display unit according to a pattern of an object in input image data in a display device according to an embodiment of the present invention.

8A, it is assumed that an object having a pattern in a vertical direction is included in an image frame corresponding to input image data. Since the image frame corresponding to the input image data mainly includes the object having the pattern in the vertical direction, the horizontal resolution of the display unit 280 must be high in order to express the detail of the image.

Referring to FIG. 8B, the subpixel rendering unit 511 of the image supply unit 510 includes four subpixels sequentially arranged in the vertical direction among the subpixels of the display unit 280, So that the input image data can be rendered.

Conventionally, when W subpixels are added to the RGB subpixels arranged in the horizontal direction, there is a problem that the resolution of the horizontal pixels decreases as the size of the unit pixels increases. However, according to the present embodiment, when a W sub-pixel is added to an RGB display module having a resolution of 3,840 * 2,160 pixels (width * length) as an example, Since the resolution in the horizontal direction is increased to 11,520 pixels by forming the unit pixel, the detail of the image can be realized without degrading the resolution in the horizontal direction.

9 is a view for explaining another example of a method of adjusting a resolution of a display unit according to a pattern of an object in input image data in a display device according to an embodiment of the present invention.

Referring to FIG. 9A, it is assumed that an image frame corresponding to input image data includes an object having a pattern in the horizontal direction. Since the image frame corresponding to the input image data mainly includes the object having the pattern in the horizontal direction, in order to display the detail of the image, the resolution of the display unit 280 in the vertical direction must be high.

9B, the subpixel rendering unit 511 of the image supply unit 510 includes four subpixels arranged consecutively in the horizontal direction among the subpixels of the display unit 280, So that the input image data can be rendered.

10 is a diagram for explaining another example of a method of adjusting a resolution of a display unit according to a pattern of an object in input image data in a display device according to an embodiment of the present invention.

Referring to FIG. 10A, it is assumed that an image frame corresponding to input image data includes an object having an oblique directional pattern. Since the image frame corresponding to the input image data mainly includes the object having the oblique directional pattern, the resolution of the oblique direction of the display unit 280 must be high in order to display the detail of the image.

Referring to FIG. 10B, the subpixel rendering unit 511 of the image supply unit 510 includes a subpixel rendering unit 530, a subpixel rendering unit 530, The input image data may be rendered to form unit pixels of the input image data.

11 is a view for explaining another example of a method of adjusting a resolution of a display unit according to a pattern of an object in input image data in a display device according to an embodiment of the present invention.

11A, it is assumed that an image frame corresponding to inputted image data includes both an object having a pattern in the vertical direction and an object having the pattern in the horizontal direction. In order to express the detail of the image, the first area 1110 of the display unit 280 corresponding to the image data including the object having the pattern in the vertical direction must have a high resolution in the horizontal direction, The second area 1120 of the display unit 280 corresponding to the image data including the object must have a high resolution in the vertical direction.

Referring to FIG. 10B, the subpixel rendering unit 511 of the image supply unit 510 generates a pattern of a first direction and a pattern of a second direction in an image frame corresponding to input image data, The first area 1110 of the display unit 280 corresponding to the pattern in the vertical direction among the patterns of the object is sensed and among the subpixels corresponding to the sensed first area 1110, The second region 1120 of the display unit 280 corresponding to the pattern of the horizontal direction among the patterns of the object, And the image data may be rendered to form a unit pixel using four sub-pixels continuously arranged along the horizontal direction among the sub-pixels corresponding to the sensed second area 1120 The.

A processing path for rendering the image data and displaying the rendered image data so as to form a unit pixel using four sub pixels continuously arranged along the vertical direction among the sub pixels of the display unit 280, A processing path for rendering the image data and displaying the rendered image data to form a unit pixel using four sub pixels continuously arranged along the horizontal direction among the sub pixels of the display unit 280 is provided in the controller 270 As shown in FIG.

According to the embodiments of the present invention described above, it is possible to provide a display device and a control method thereof that can variably apply the resolution of a display device according to an input image.

The present invention described above can be embodied as computer-readable codes on a medium on which a program is recorded. The computer readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the computer readable medium include a hard disk drive (HDD), a solid state disk (SSD), a silicon disk drive (SDD), a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, , And may also be implemented in the form of a carrier wave (e.g., transmission over the Internet). Also, the computer may include a control unit of the terminal. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

200: Display device
270:
280:
510:
511: Subpixel rendering unit
512: pattern detector

Claims (14)

A receiving unit for receiving image data;
A display unit including unit pixels composed of four subpixels, the four subpixels constituting each unit pixel are arranged in a first direction or a second direction different from the first direction in the display unit Arranged; And
And a control unit,
Wherein,
Detecting a pattern of an object in an image frame corresponding to the received image data,
Determining an arrangement direction of four subpixels constituting each unit pixel in the display unit as either the first direction or the second direction based on the pattern of the detected object,
And the image data is rendered so that four subpixels arranged in the determined direction constitute the unit pixel. The method according to claim 1,
Wherein,
When a pattern in the first direction among the patterns of the detected object is more dominant than a pattern in the second direction, four sub-pixels successively arranged along the first direction among the sub- And render the image data to configure. The method according to claim 1,
Wherein,
When the pattern of the second direction among the patterns of the detected object is more dominant than the pattern of the first direction, four sub-pixels continuously arranged along the first direction among the sub- And render the image data to configure. The method according to claim 1,
When the pattern of the detected object includes both the pattern in the first direction and the pattern in the second direction,
Detecting a first region of the display unit corresponding to the pattern of the first direction among the patterns of the detected objects and detecting a first region of the display unit corresponding to the pattern of the first direction, Rendering the image data so that the subpixels constitute a first unit pixel,
Detecting a second region of the display unit corresponding to the pattern of the second direction among the patterns of the detected object and detecting a second region of the display unit corresponding to the pattern of the first region among the subpixels corresponding to the sensed second region, And the subpixels constitute a second unit pixel. 3. The method of claim 2,
Wherein the display unit has a resolution in the second direction larger than a resolution in the first direction. The method of claim 3,
Wherein the display unit has a resolution in the first direction larger than a resolution in the second direction. The method according to claim 1,
Wherein,
Detecting a pattern of an object in an image frame corresponding to the received image data every predetermined time or a predetermined frame,
Determines again the arrangement direction of the four subpixels constituting each unit pixel based on the pattern of the re-detected object in either the first direction or the second direction,
And the image data is rendered so that four subpixels arranged in the redetermined direction form the unit pixel. Receiving image data;
Detecting a pattern of an object in an image frame corresponding to the received image data;
Determining an array direction of four subpixels constituting each unit pixel in the display unit as a first direction or a second direction different from the first direction based on the pattern of the detected object; And
And rendering the image data so that four subpixels arranged in the determined direction form the unit pixel. 9. The method of claim 8,
When a pattern in the first direction among the patterns of the detected object is more dominant than a pattern in the second direction, four sub-pixels successively arranged along the first direction among the sub- Wherein the image data is rendered so as to configure the display device. 9. The method of claim 8,
When the pattern of the second direction among the patterns of the detected object is more dominant than the pattern of the first direction, four sub-pixels continuously arranged along the first direction among the sub- Wherein the image data is rendered so as to configure the display device. 9. The method of claim 8,
Determining an array direction of the four subpixels when the pattern of the detected object includes both the pattern in the first direction and the pattern in the second direction,
Detecting a first area of the display unit corresponding to the pattern of the first direction among the patterns of the detected object,
Rendering the image data so that four subpixels successively arranged along the first direction constitute a first unit pixel among the subpixels corresponding to the sensed first region;
Detecting a second region of the display portion corresponding to the pattern of the second direction among the patterns of the detected objects, and
And rendering the image data so that four subpixels consecutively arranged along the second direction among the subpixels corresponding to the sensed second area constitute a second unit pixel Control method. 10. The method of claim 9,
Wherein the display unit has a resolution in the second direction larger than a resolution in the first direction. 11. The method of claim 10,
Wherein the display unit has a resolution in the first direction larger than a resolution in the second direction. 9. The method of claim 8,
Re-detecting a pattern of an object in an image frame corresponding to the received image data every predetermined time or a predetermined frame,
Re-determining the arrangement direction of the four sub-pixels constituting each unit pixel in either the first direction or the second direction based on the pattern of the re-detected object, and
And rendering the image data so that four subpixels arranged in the re-determined direction constitute the unit pixel.

Images