Display device and image quality control method thereof

Abstract

The present invention relates to a display device capable of effectively controlling image quality when providing a multi-view function, the display device being capable of displaying a multi-view screen including a plurality of divided screens, determining an image quality control path for each input source on the basis of the priority order of each of a plurality of input sources corresponding to each of the plurality of divided screens, and controlling the image quality of each input source in accordance with the determined image quality control path. An image quality processing is performed on each of a plurality of input images provided by each of the input sources, and each of the plurality of input images after the image quality processing is displayed on each of the plurality of split screens.

Description

Technical Field

[0001] The present invention relates to a display device for controlling image quality while providing a multi-view function. Background Art

[0002] Digital TV services using wired or wireless communication networks are becoming increasingly popular. Digital TV services can provide a variety of services that were not available in previous analog broadcasting services.

[0003] For example, Internet Protocol Television (IPTV) and smart TV, both types of digital TV services, offer two-way services, allowing users to actively select the type of programs they want to watch and when. Building on this two-way service, IPTV and smart TV also offer a variety of additional services, such as online search, online shopping, and online gaming.

[0004] The multi-view function is a function of dividing the entire screen of a display into a plurality of screens and reproducing an image on each of the divided screens.

[0005] Currently, when providing a multi-view function, image quality control is divided into a main path and a sub path. However, there is a problem in that the main path and the sub path are determined according to the order of the input sources.

[0006] In this case, there occurs a problem that the image quality of the input source input through the sub path is degraded compared to the input source input through the main path, contrary to the user's intention.

[0007] Furthermore, when the multi-view function is used, there is also the problem that it is not easy to switch between the main screen and the sub-screen and change the size. Summary of the Invention

[0008] Technical problems to be solved

[0009] The purpose of the present invention is to provide a main path and a sub-path according to the type of input source, so as to provide the best image quality when providing a multi-view function.

[0010] An object of the present invention is to divide the image quality control path of an image provided from an input source into a main path and a sub-path according to the size of the screen when providing a multi-view function, thereby preventing unnecessary power consumption.

[0011] An object of the present invention is to facilitate switching and resizing of multiple screens when providing a multi-view function.

[0012] Means of solving technical problems

[0013] According to an embodiment of the present invention, a display device can display a multi-view screen including multiple split screens, determine the image quality control path of each input source based on the priority of each of the multiple input sources corresponding to each of the above-mentioned multiple split screens, perform image quality processing on each of the multiple input images provided by the above-mentioned input sources according to the determined image quality control path, and display each of the above-mentioned multiple input images after image quality processing on the above-mentioned multiple split screens respectively.

[0014] According to an embodiment of the present invention, a method for controlling image quality of a display device may include: a step of displaying a multi-view screen including a plurality of split screens; a step of determining an image quality control path for each input source based on the priority of each of the plurality of input sources corresponding to each of the plurality of split screens; a step of performing image quality processing on each of the plurality of input images provided by the plurality of input sources according to the determined image quality control path; and a step of displaying each of the plurality of input images after image quality processing on the plurality of split screens.

[0015] Effects of the Invention

[0016] According to various embodiments of the present invention, when providing multi-view functionality, image quality control of the input source image can be selectively performed based on the input source type. This allows selective image quality control to be performed on images where all image quality elements do not need to be controlled, thereby reducing power consumption.

[0017] According to the embodiments of the present invention, the screen size correlation and priority of each input source are taken into consideration, and when providing a multi-view function, images with optimal quality can be output through each split screen.

[0018] Furthermore, when a user uses a multi-view function with two or more screens, the user can freely change the position or size of the main screen and the sub-screen, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure of a display device according to an embodiment of the present invention is shown in a block diagram.

[0020] Figure 2 is a block diagram of a remote control device according to an embodiment of the present invention.

[0021] Figure 3 A practical structural example of a remote control device according to an embodiment of the present invention is shown.

[0022] Figure 4 An example using a remote control device according to an embodiment of the present invention is shown.

[0023] Figure 5A diagram for illustrating an image quality control method for a display device according to an embodiment of the present invention.

[0024] Figures 6a to 6f is a multi-view schematic diagram of various modes according to an embodiment of the present invention.

[0025] Figure 7 FIG. 1 is a diagram illustrating an example of a multi-view setting screen according to an embodiment of the present invention.

[0026] Figure 8 is a diagram illustrating a first reference table according to an embodiment of the present invention.

[0027] Figure 9a as well as Figure 9b 2 is a diagram illustrating an image quality control path according to an embodiment of the present invention.

[0028] Figure 10 is a diagram illustrating a second reference table according to an embodiment of the present invention.

[0029] Figures 11 to 14 These are diagrams for explaining various embodiments of changing the position of an input image displayed on a split screen when the multi-view function is activated.

[0030] Figure 15 This is a diagram illustrating an example of changing the image quality control path in accordance with a change in the size of the divided screens on a multi-view screen.

[0031] Figure 16a as well as Figure 16b This is a schematic diagram of the process of outputting each input source on the display screen through the image quality control path when providing multi-view function.

[0032] Figures 17a to 17d This diagram illustrates the image quality control path that an input source passes through according to a change in the position of the input source when providing a multi-view function. DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in more detail with reference to the accompanying drawings. The suffixes "module" and "unit" used in the following description are simply added or used interchangeably for the convenience of writing the specification and do not have different meanings or functions.

[0034] The display device according to an embodiment of the present invention is, for example, an intelligent display device that adds computer support to its broadcast reception functionality. While maintaining the broadcast reception functionality, it also adds network functionality and can include more user-friendly interfaces such as handwriting input devices, touch screens, or spatial remote controls. Furthermore, with the support of wired or wireless Internet access, it can access the Internet and computers to perform functions such as email, web browsing, online banking, and gaming. These functions can be implemented using a standardized, general-purpose operating system.

[0035] Therefore, the display device described in the present invention can freely add or remove various applications on a universal OS kernel, thereby being able to perform a variety of user-favorite functions. More specifically, the display device can be, for example, an Internet TV, HBB TV, smart TV, LED TV, OLED TV, etc., and can also be used in smartphones.

[0036] Figure 1 The structure of a display device according to an embodiment of the present invention is shown in a block diagram.

[0037] Reference Figure 1 The display device 100 may include a broadcast receiving unit 130 , an external device interface 135 , a memory 140 , a user input interface 150 , a controller 170 , a wireless communication interface 173 , a display 180 , a speaker 185 , and a power supply circuit 190 .

[0038] The broadcast receiving unit 130 may include a tuner 131 , a demodulator 132 , and a network interface 133 .

[0039] The tuner 131 may select a specific broadcast channel according to a channel selection instruction and may receive a broadcast signal for the selected specific broadcast channel.

[0040] The demodulator 132 may separate the received broadcast signal into a video signal, an audio signal, and a data signal related to the broadcast program, and restore the separated video signal, audio signal, and data signal into an outputtable form.

[0041] The external device interface 135 may receive an application or an application list in an adjacent external device and transmit the received application or application list to the controller 170 or the memory 140 .

[0042] The external device interface 135 may provide a connection path between the display device 100 and an external device. The external device interface 135 may receive one or more of images and audio output from an external device connected wirelessly or wired to the display device 100 and transmit the received audio to the controller 170. The external device interface 135 may include multiple external input terminals. The multiple external input terminals may include RGB terminals, one or more HDMI (High Definition Multimedia Interface) terminals, and component terminals.

[0043] An image signal of an external device input through the external device interface 135 may be output through the display 180 . A voice signal of an external device input through the external device interface 135 may be output through the speaker 185 .

[0044] The external device that can be connected to the external device interface 135 may be any of a set-top box, a Blu-ray player, a DVD player, a game console, a sound bar, a smartphone, a PC, a USB memory, and a home theater, but these are just examples.

[0045] The network interface 133 may provide an interface for connecting the display device 100 to a wired / wireless network including the Internet. The network interface 133 may send or receive data with other users or other electronic devices via the connected network or other networks linked to the connected network.

[0046] Furthermore, the display apparatus 100 may transmit a portion of content data stored in the display apparatus 100 to a selected user or electronic device from among other pre-registered users or other electronic devices.

[0047] The network interface 133 can access a predetermined web page through the accessed network or other networks linked to the accessed network. That is, by accessing the predetermined web page through the network, data can be sent or received with the corresponding server.

[0048] In addition, the network interface 133 can receive content or data provided by a content provider or a network operator. That is, the network interface 133 can receive content such as movies, advertisements, games, VOD, broadcast signals, and related information provided by a content provider or a network operator through the network.

[0049] Furthermore, the network interface 133 may receive firmware update information and update files provided by a network operator, and may also send data to the Internet, content providers, or network operators.

[0050] The network interface 133 can select and receive a desired application from a plurality of applications open to the public via the network.

[0051] The memory 140 stores programs for various signal processing and control in the controller 170 and can store image, voice or data signals after signal processing.

[0052] Furthermore, the memory 140 may also temporarily store an image, voice, or data signal input from the external device interface 135 or the network interface 133 , and may store information on a predetermined image through a channel memory function.

[0053] The memory 140 may store an application program or an application program list input from the external device interface 135 or the network interface 133 .

[0054] The display device 100 can reproduce and provide content files (moving image files, still image files, music files, document files, application files, etc.) stored in the memory 140 to the user.

[0055] The user input interface 150 can transmit user input signals to the controller 170, or can transmit signals from the controller 170 to the user. For example, the user input interface 150 receives and processes control signals such as power on / off, channel selection, and screen setting from the remote control device 200 using various communication methods, such as Bluetooth, WB (Ultra Wideband), ZigBee, RF (Radio Frequency), or IR communication, or processes and transmits control signals from the controller 170 to the remote control device 200.

[0056] Furthermore, the user input interface 150 may transmit control signals inputted through local keys (not shown) such as a power key, a channel key, a volume key, and a setting key to the controller 170 .

[0057] The image signal processed by the controller 170 is input to the display 180 and displayed in an image format corresponding to the image signal. In addition, the image signal processed by the controller 170 can be input to an external output device through the external device interface 135.

[0058] The voice signal processed by the controller 170 may be output in an audio manner to the speaker 185. Also, the voice signal processed by the controller 170 may be input to an external output device through the external device interface 135.

[0059] In addition, the controller 170 may control the overall operations within the display device 100 .

[0060] Furthermore, the controller 170 may control the display device 100 through a user command input via the user input interface 150 or an internal program, and may download a user-desired application or application list into the display device 100 after accessing a network.

[0061] The controller 170 may output the channel information or the like selected by the user together with the processed image or voice signal through the display 180 or the speaker 185 .

[0062] Furthermore, according to an external device image reproduction instruction received through the user input interface 150 , the controller 170 may output an image signal or a voice signal from an external device such as a camera or a video recorder input through the external device interface 135 through the display 180 or the speaker 185 .

[0063] On the other hand, the controller 170 can control the display 180 to display an image, and can control the display 180 to display, for example, a broadcast image input through the tuner 131, an external input image input through the external device interface 135, an image input through the network interface unit, or an image stored in the memory 140. In this case, the image displayed on the display 180 can be a still image or a moving image, and can be a 2D image or a 3D image.

[0064] In addition, the controller 170 can control the reproduction of content stored in the display device 100, or received broadcast content, external input content input from the outside, and the above content can be in various forms such as broadcast images, external input images, audio files, static images, accessed website screens, and document files.

[0065] The wireless communication interface 173 can communicate with external devices through wired or wireless communication. The wireless communication interface 173 can communicate with external devices in a short range. To this end, the wireless communication interface 173 uses Bluetooth. TMAt least one of the technologies of RFID (Radio Frequency Identification), Infrared Data Association (IrDA), UWB (Ultra Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) can support short-range communication. This wireless communication interface 173 can support wireless communication between the display device 100 and a wireless communication system, between the display device 100 and other display devices 100, or between the display device 100 and a network where the display device 100 (or an external server) is located through a short-range wireless communication network (Wireless Area Networks). The short-range wireless communication network can be a short-range wireless personal communication network (Wireless Personal Area Networks).

[0066] The other display devices 100 may be wearable devices (e.g., smartwatches, smartglasses, HMDs (head mounted displays)), mobile terminals such as smartphones, etc., that can exchange data or interact with the display device 100 according to the present invention. The wireless communication interface 173 can sense or identify wearable devices capable of communication around the display device 100.

[0067] Furthermore, if the sensed wearable device is authenticated as a device capable of communicating with the display apparatus 100 according to the present invention, the controller 170 may transmit at least a portion of the data processed by the display apparatus 100 to the wearable device via the wireless communication interface 173. Thus, the user of the wearable device may utilize the data processed by the display apparatus 100 via the wearable device.

[0068] The display 180 may convert the image signal, data signal, OSD signal processed by the controller 170 or the image signal, data signal, etc. received from the external device interface 135 into R, G, B signals and generate driving signals.

[0069] on the other hand, Figure 1The display device 100 shown is only one embodiment of the present invention. According to the actual specifications of the display device 100 , some of the structural elements shown in the drawings may be combined, added or omitted.

[0070] That is, as needed, two or more structural elements can be combined into one structural element, or one structural element can be split into two or more structural elements. In addition, the functions performed in each module are only used to illustrate the embodiments of the present invention, and the specific actions or devices thereof are not intended to limit the scope of protection of the present invention.

[0071] According to another embodiment of the present invention, it is also possible to Figure 1 In contrast, the display device 100 does not include the tuner 131 and the demodulator 132 , and receives and reproduces images through the network interface 133 or the external device interface 135 .

[0072] For example, the display device 100 can be configured to be divided into an image processing device and a content reproduction device, wherein the image processing device is a set-top box, etc. for receiving broadcast signals or content based on various network services, and the content reproduction device is used to reproduce the content input from the above-mentioned image processing device.

[0073] In this case, the operation method of the display device according to the embodiment of the present invention described below can be explained in addition to the reference Figure 1 In addition to being executed by the display device 100 described above, the process may be executed by any of the image processing devices categorized as set-top boxes, etc., or the content playback device including the display 180 and the audio output unit 185 .

[0074] Secondly, refer to Figures 2 to 3 , describing a remote control device according to an embodiment of the present invention.

[0075] Figure 2 is a block diagram of a remote control device according to an embodiment of the present invention, Figure 3 FIG. 2 shows an actual structural example of the remote control device 200 according to an embodiment of the present invention.

[0076] First, refer to Figure 2 The remote control device 200 may include a fingerprint identifier 210 , a wireless communication circuit 220 , a user input interface 230 , a sensor 240 , an output interface 250 , a power supply circuit 260 , a memory 270 , a controller 280 , and a microphone 290 .

[0077] Reference Figure 2 The wireless communication circuit 220 transmits and receives signals with any one of the display devices according to the above-mentioned multiple embodiments of the present invention.

[0078] The remote control device 200 includes an RF circuit 221 capable of transmitting and receiving signals with the display device 100 according to the RF communication protocol, and may include an IR circuit 223 capable of transmitting and receiving signals with the display device 100 according to the IR communication protocol. Furthermore, the remote control device 200 may include a Bluetooth circuit 225 capable of transmitting and receiving signals with the display device 100 according to the Bluetooth communication protocol. Furthermore, the remote control device 200 may include an NFC (Near Field Communication) circuit 227 capable of transmitting and receiving signals with the display device 100 according to the NFC communication protocol, and may include a WLAN (Wireless LAN) circuit 229 capable of transmitting and receiving signals with the display device 100 according to the WLAN communication protocol.

[0079] Furthermore, the remote control device 200 transmits a signal including information on the activity of the remote control device 200 and the like to the display device 100 via the wireless communication circuit 220 .

[0080] On the other hand, the remote control device 200 can receive signals transmitted by the display device 100 through the RF circuit 221 and transmit instructions on power on / off, channel change, volume change, etc. to the display device 100 through the IR circuit 223 as needed.

[0081] The user input interface 230 may be composed of a keyboard, buttons, a touch panel, or a touch screen. The user may operate the user input interface 230 to input instructions related to the display device 100 to the remote control device 200. In the case where the user input interface 230 includes a hard key button, the user may input instructions related to the display device 100 to the remote control device 200 by pushing the hard key button. Figure 3 Explain this point.

[0082] Reference Figure 3 The remote control device 200 may include a plurality of buttons. The plurality of buttons may include a fingerprint recognition button 212, a power button 231, a home button 232, a live button 233, an external input button 234, a volume adjustment button 235, a voice recognition button 236, a channel change button 237, an OK button 238, and a return button 239.

[0083] The fingerprint recognition button 212 may be a button for recognizing a user's fingerprint. As an embodiment, the fingerprint recognition button 212 may perform a push action, and may also receive a push action and a fingerprint recognition action.

[0084] The power button 231 may be a button for turning on or off the power of the display apparatus 100 .

[0085] The home button 232 may be a button for moving to a home screen of the display device 100 .

[0086] The live button 233 may be a button for displaying a real-time broadcast program.

[0087] The external input button 234 may be a button for receiving an external input connected to the display apparatus 100 .

[0088] The volume adjustment button 235 may be a button for adjusting the volume of the sound output by the display device 100 .

[0089] The voice recognition button 236 may be a button for receiving a user's voice and recognizing the received voice.

[0090] The channel change button 237 may be a button for receiving a broadcast signal of a specific broadcast channel.

[0091] The OK button 238 may be a button for selecting a specific function, and the return button 239 may be a button for returning to a previous screen.

[0092] Again Figure 2 .

[0093] When the user input interface 230 includes a touch screen, the user can touch the soft keys on the touch screen to input commands related to the display device 100 to the remote control device 200. Furthermore, the user input interface 230 can include various user-operable input means such as scroll keys or work keys, and this embodiment does not limit the scope of protection of the present invention.

[0094] The sensor 240 may include a gyro sensor 241 or an acceleration sensor 243 , and the gyro sensor 241 may detect information about the movement of the remote control apparatus 200 .

[0095] For example, the gyro sensor 241 can detect information about the movement of the remote control device 200 based on the x, y, and z axes, and the acceleration sensor 243 can detect information about the movement speed of the remote control device 200. Furthermore, the remote control device 200 may further include a distance measuring sensor that can detect the distance between the remote control device 200 and the display 180 of the display device 100.

[0096] The output interface 250 may output an image or voice signal corresponding to an operation of the user input interface 230 or a signal transmitted from the display apparatus 100 .

[0097] The user can identify the output interface 250 by whether the user input interface 230 is operated or not or whether the display device 100 is controlled or not.

[0098] For example, the output interface 250 may include an LED 251 that lights up when the user input interface 230 is operated or signals are transmitted and received with the display device 100 via the wireless communication unit 225 , a vibrator 253 that generates vibrations, a speaker 255 that outputs sounds, or a display 257 that outputs images.

[0099] Furthermore, the power supply circuit 260 supplies power to the remote control device 200 and stops the power supply when the remote control device 200 is inactive for a predetermined period of time, thereby being able to reduce power waste.

[0100] The power supply circuit 260 resumes supplying power when a predetermined key provided in the remote control device 200 is operated.

[0101] The memory 270 may store various programs, application data, and the like required for controlling or operating the remote control device 200 .

[0102] When the remote control device 200 and the display device 100 wirelessly transmit and receive signals through the RF circuit 221 , the remote control device 200 and the display device 100 transmit and receive signals using a predetermined frequency band.

[0103] The controller 280 of the remote control apparatus 200 may store information on a frequency band and the like in which the display apparatus 100 paired with the remote control apparatus 200 can wirelessly transmit and receive signals in the memory 270 for reference.

[0104] Controller 280 controls all matters related to the control of remote control device 200. Controller 280 can transmit a signal corresponding to the operation of a predetermined key of user input interface 230 or a signal corresponding to the movement of remote control device 200 detected by sensor 240 to display device 100 via wireless communication unit 225.

[0105] Also, the microphone 290 of the remote control device 200 may acquire voice.

[0106] A plurality of microphones 290 may be provided.

[0107] Next, let’s explain Figure 4 .

[0108] Figure 4 An example of using a remote control device according to an embodiment of the present invention is shown.

[0109] Figure 4 (a) shows an example in which the pointer 205 corresponding to the remote control device 200 is displayed on the display 180 .

[0110] The user can move the remote control device 200 up, down, left, right, or rotate it. The pointer 205 displayed on the display 180 of the display device 100 corresponds to the movement of the remote control device 200. As shown in the figure, the pointer 205 of the remote control device 200 moves and is displayed according to the movement in the 3D space, so it can be called a spatial remote control.

[0111] Figure 4 (b) shows an example in which when the user moves the remote control device 200 to the left, the pointer 205 displayed on the display 180 of the display device 100 also moves to the left in response thereto.

[0112] The information about the movement of the remote control device 200 sensed by the sensor of the remote control device 200 is transmitted to the display device 100. The display device 100 can calculate the coordinates of the pointer 205 based on the information about the movement of the remote control device 200. The display device 100 can display the pointer 205 in a manner corresponding to the calculated coordinates.

[0113] Figure 4 (c) shows an example in which the user moves the remote control device 200 away from the display 180 while pressing a specific button in the remote control device 200. As a result, the selected area in the display 180 corresponding to the pointer 205 is zoomed in and can be displayed in an enlarged manner.

[0114] On the contrary, when the user moves the remote control device 200 close to the display 180 , the selection area in the display 180 corresponding to the pointer 205 is zoomed out and can be displayed in a reduced size.

[0115] On the other hand, when the remote control device 200 is far away from the display 180 , the selection area may be zoomed out, and when the remote control device 200 is close to the display 180 , the selection area may be zoomed in.

[0116] Furthermore, when a specific button on the remote control device 200 is pressed, recognition of up, down, left, and right movement can be disabled. Specifically, when the remote control device 200 is moved away from or toward the display 180, up, down, left, and right movement cannot be recognized, and only forward and backward movement can be recognized. When a specific button on the remote control device 200 is not pressed, only the pointer 205 moves in response to the up, down, left, and right movement of the remote control device 200.

[0117] On the other hand, the movement speed or movement direction of the pointer 205 may correspond to the movement speed or movement direction of the remote control apparatus 200 .

[0118] Meanwhile, the term "pointer" as used herein refers to an object displayed on display 180 in response to an action of remote control device 200. Therefore, pointer 205 may be an object of various shapes, in addition to the arrow shape shown in the drawings. For example, it may be a point, a cursor, a tooltip, a thick outline, and so on. Furthermore, pointer 205 may be displayed in correspondence with any point on the horizontal or vertical axis of display 180, and may also be displayed in correspondence with multiple points, such as a line or a surface.

[0119] Figure 5 FIG. 1 is a diagram for explaining an image quality control method of a display device according to an embodiment of the present invention.

[0120] Reference Figure 5 , the controller 170 of the display device 100 implements a multi-view function ( S501 ).

[0121] In one embodiment, the multi-view function may be a function of dividing the entire screen of the display 180 into a plurality of divided screens and viewing an image through each divided screen.

[0122] The controller 170 may execute the multi-view function in the case of receiving an instruction to select an icon displayed on the display 180 or an instruction generated when a predetermined button provided on the remote control device 200 is selected.

[0123] The controller 170 receives a multi-view layout instruction on the multi-view setting screen displayed along with the execution of the multi-view function ( S503 ).

[0124] As the multi-view function is executed, a multi-view setting screen may be displayed on the display 180 .

[0125] The multi-view setting screen may be a screen for setting the number of split screens, the size of each split screen, and an input source matched with each split screen.

[0126] The input source may be any one of an application program provided in the display device 100 and an external input interface such as HDMI. The application program may be named as an application.

[0127] The multi-view layout instruction may be an instruction for setting the number of split screens and the size of each split screen.

[0128] Figures 6a to 6f is a diagram showing multiple views of various aspects according to an embodiment of the present invention.

[0129] Reference Figures 6a to 6f , showing various ways of multi-view that can be set on the multi-view setting screen according to user input.

[0130] Figure 6a This is a multi-view display in which the entire screen of the display device 100 is divided into two divided screens 601 and 603 of the same size.

[0131] Figure 6b The entire screen of the display device 100 is composed of three split screens of the same size, which may include a left center split screen 611 , a right upper split screen 613 , and a right lower split screen 615 .

[0132] Figure 6c The multi-view display is a display in which the entire screen of the display device 100 is divided into four divided screens 621 , 623 , 625 , and 627 of the same size.

[0133] Figure 6d This is a multi-view display in which the entire screen of the display device 100 is divided into two divided screens 631 and 633 of different sizes.

[0134] The size of the left split screen 631 may be larger than the size of the right split screen 633 .

[0135] Figure 6e The multi-view is composed of the entire screen 641 of the display device 100 and a PIP screen 643 located within the entire screen 641 in a PIP manner.

[0136] Figure 6f The multi-view display is a display in which the entire screen of the display device 100 is divided into three divided screens 653 , 655 , and 657 of different sizes and a divided screen 651 having a size larger than the three divided screens 653 , 655 , and 657 .

[0137] As described above, the number and size of split screens can be set on the multi-view setting screen.

[0138] Again Figure 5 .

[0139] The controller 170 determines whether the sizes of the divided screens are the same based on the received multi-view layout instruction ( S505 ).

[0140] The controller 170 may determine whether the sizes of the divided screens are the same using information on the size of each of the plurality of divided screens set on the multi-view setting screen.

[0141] After determining that the sizes of the split screens are the same, the controller 170 receives instructions indicating a plurality of candidate applications for input sources of the split screens ( S507 ).

[0142] Each of the plurality of candidate applications may be an application that outputs an input image to each divided screen.

[0143] The multiple candidate applications can be any one of a live TV application that provides real-time broadcast program images, a streaming application that provides real-time streaming images, an HDMI application that provides external input images through HDMI, a browser application that provides website images through an Internet browser, and a camera application that provides images captured by a camera.

[0144] The controller 170 may receive an instruction to select an application matching each split screen on the multi-view setting screen.

[0145] Reference Figure 7 Explain this point.

[0146] Figure 7 FIG. 1 is a diagram illustrating an example of a multi-view setting screen according to an embodiment of the present invention.

[0147] Reference Figure 7 , which shows a multi-view setting screen 700 displayed on the display 180 by the display device 100.

[0148] It is assumed that two split screens of the same size are selected on the multi-view setting screen 700 .

[0149] The multi-view setting screen 700 may include a guide text 710 guiding selection of two input sources, a first split screen item 711 , a first input list 730 , a second split screen item 713 , and a second input list 750 .

[0150] The first split screen item 711 may be an item indicating a preview image to be displayed on the first split screen.

[0151] The first input list 730 may be a list of input sources for selecting the first split screen item 711 .

[0152] The second split screen item 713 may be an item indicating a preview image to be displayed on the second split screen.

[0153] The second input list 750 may be a list of input sources for selecting the second split screen item 713 .

[0154] The first input list 730 and the second input list 750 may each include a plurality of candidate application items corresponding to a plurality of candidate applications representing input sources.

[0155] The user may select a candidate application displayed on the first split screen through the first input list 730 , and may select a candidate application displayed on the second split screen through the second input list 750 .

[0156] Again Figure 5 .

[0157] The controller 170 determines an image quality control path according to the priority order of each of the plurality of candidate applications selected based on the received instruction ( S509 ).

[0158] In the case where the sizes of the split screens are the same, the controller 170 may determine the image quality control path according to a predetermined priority order of the selected candidate applications.

[0159] The priority order of each candidate application may be preset according to the performance of the controller 170 or a SoC (System On Chip) provided in the controller 170 .

[0160] The memory 140 of the display apparatus 100 may store a first reference table that matches each candidate application with a priority value of each candidate application.

[0161] The controller 170 may determine the priority order of the selected candidate applications using the first reference table stored in the memory 140 .

[0162] Figure 8 is a diagram illustrating a first reference table according to an embodiment of the present invention.

[0163] Reference Figure 8 , the first reference table 800 may include candidate applications for providing a multi-view function and priority values matching the candidate applications.

[0164] Candidate applications can be named as input sources.

[0165] For example, the priority value of the Live TV application is 1, the priority value of the HDMI application is 3, the priority value of the Tube application providing live streaming service is 2, the priority value of the browser application is 3, and the priority value of the camera application is 3.

[0166] The smaller the priority value, the higher the priority can be.

[0167] When the priority value is 1, the image quality control path of the candidate application can be determined as the main image quality control path.

[0168] When the priority value is 2, the image quality control path of the candidate application may be determined as a sub-image quality control path.

[0169] When the priority value is 3, the image quality control path of the candidate application may be determined as a graphics path or a path in which all image quality control blocks are disabled.

[0170] For the image quality control path, the higher the priority of the candidate application, the more likely it is to be set as the main image quality control path in order to provide better image quality.

[0171] Again Figure 5 .

[0172] The image quality control path may be any one of the main image quality control path, the sub-image quality control path, and the graphics path.

[0173] The main picture quality control path (Main Picture Quality Control Path) may be a path for performing control of multiple picture quality elements.

[0174] The main picture quality control path may be a path passing through a plurality of picture quality control blocks corresponding to each of a plurality of picture quality elements.

[0175] A sub-picture quality control path (Sub Picture Quality Control Path) may be a path for controlling a portion of a plurality of picture quality elements.

[0176] The sub-picture quality control path may be a path passing through a portion of picture quality control blocks corresponding to each of a portion of picture quality elements among a plurality of picture quality elements.

[0177] A graphic path may be a path used to generate a user interface.

[0178] The controller 170 may determine the image quality control path of the candidate application with the highest priority among the selected candidate applications as the main image quality control path.

[0179] The controller 170 may determine the image quality control path in the order of the main image quality control path, the sub-image quality control path, and the graphic path according to the priority order of the plurality of candidate applications.

[0180] Figure 9a as well as Figure 9b 2 is a diagram illustrating an image quality control path according to an embodiment of the present invention.

[0181] Reference Figure 9a The video engine 950 may output the video received from each of the first to fourth input sources 910 to 940 to any one of the main image quality control path 960 , the sub-image quality control path 970 , and the graphics path 980 .

[0182] The video engine 950 may be included in Figure 1 within the controller 170.

[0183] The video engine 950 and the main image quality control path 960, the sub-image quality control path 970 and the graphics path 980 may be included in Figure 1 within the controller 170.

[0184] In one embodiment, the video engine 950 may determine the image quality control path of each candidate application based on the priority order of the selected candidate applications.

[0185] In yet another embodiment, the video engine 950 may determine the image quality control path for each candidate application based on the priority of each of the selected candidate applications and the size of the split screen matching each candidate application.

[0186] The video engine 950 may decode an image received from an input source and output the decoded image to any one of a plurality of image quality control paths.

[0187] Each of the plurality of input sources 910 to 940 may correspond to each of the plurality of candidate applications.

[0188] Each input source may represent a candidate application and may also represent a source related to the candidate application.

[0189] In case the candidate application is a Live TV application, the input source may be the tuner 131 .

[0190] In the case where the candidate application is an HDMI application, the input source may be an external device connected to the HDMI terminal of the external device interface 135 .

[0191] In the case where the candidate application is an application that provides a real-time streaming service, the input source may be an external server connected through the network interface 133 .

[0192] In the case where the candidate application is an application providing an Internet website browser, the input source may be an Internet server connected through the network interface 133 .

[0193] In a case where the candidate application is an application providing a camera service, the input source may be a camera connected through the external device interface 135 .

[0194] Figure 9b Detailed description of each of the main image quality control path 960 , the sub-image quality control path 970 , and the graphics path 980 .

[0195] Reference Figure 9b The video engine 950 stores multiple images input through various input sources in the buffer DDR, and can output the stored multiple images to any image quality control path.

[0196] The cache DDR may be included in the memory 140 or may be a separate structural element.

[0197] There may be more than one DDR cache.

[0198] The main image quality control path 960 may include an HDR processing unit 961 , a noise removal unit TDR 962 , a contour edge improvement unit DNR 963 , a sharpness adjustment unit SHP 964 , a resolution adjustment unit 965 , a frame rate control unit 966 , and an output scaler OSC 967 .

[0199] The HDR processing unit 961 can perform HDR (High Dynamic Range) processing on an image.

[0200] The noise removal unit TDR 962 can remove temporal noise from the image after HDR processing (Temporal Noise Reduction).

[0201] The edge improvement unit DNR 963 can improve the boundary of the image from which noise is removed.

[0202] The sharpness adjustment unit SHP 964 may adjust the sharpness of an image with improved boundaries.

[0203] The resolution adjustment unit 965 may adjust the resolution of the image whose definition is adjusted. The resolution adjustment unit 965 may perform a Super Resolution operation of converting a low-resolution image into a high-resolution image.

[0204] The frame rate control section 966 may adjust the frame rate of the image with the adjusted resolution.

[0205] The output scaler OSC 967 may amplify the image after adjusting the frame rate, and output the amplified image to the screen synthesis unit 990 .

[0206] In this way, the main image quality control path 960 can control multiple image quality elements through each image quality control block.

[0207] The sub-image quality control path 970 may include an HDR processing unit 971 , a sharpness adjustment unit 974 , a resolution adjustment unit 975 , and an output scaler 976 .

[0208] The HDR processing unit 971 can perform HDR (High Dynamic Range) on the image.

[0209] The clarity adjustment unit 974 may adjust the clarity of the image after HDR processing.

[0210] The resolution adjustment unit 975 may convert the low-resolution image whose definition has been adjusted into a high-resolution image.

[0211] The output scaler 976 may scale up the resolution of the converted image.

[0212] In one embodiment, compared with the main image quality control path 960 , the sub-image quality control path 970 may not include some image quality control blocks.

[0213] For example, the sub-image quality control path 970 may not include the noise removal unit 972 , the edge enhancement unit 973 , and the frame rate control unit.

[0214] In another embodiment, the sub-image quality control path 970 may include the noise removal unit 972 and the edge enhancement unit 973 but bypass the noise removal unit 972 and the edge enhancement unit 973. That is, the image input to the sub-image quality control path 970 is output to the output scaler 976 after undergoing HDR processing, sharpness adjustment, and resolution adjustment.

[0215] In this way, compared with the main image quality control path 960, the sub-image quality control path 970 may not control some image quality elements.

[0216] That is, when providing a multi-view function, the image quality control of the input source can be selectively performed according to the type of the input source.

[0217] Thus, selective image quality control is performed on an image for which control of all image quality elements is not required, thereby preventing power consumption.

[0218] The graphics path 980 may include an HDR processing unit 981 , a sharpness adjustment unit 982 , and a GPU 983 .

[0219] The graphics path 980 may be a path for image quality processing of a user interface image.

[0220] When a UI image is input through an input source, the video engine 950 may determine the image quality control path of the UI image as a graphic path.

[0221] The HDR processing unit 981 may perform HDR processing on the UI image.

[0222] The clarity adjustment unit 982 may adjust the clarity of the UI image after HDR processing.

[0223] The GPU 983 is a graphics processing unit that can perform graphics processing of UI images with adjusted clarity.

[0224] The screen composition unit 990 may combine the image that has passed through the main image quality control path 960 , the image that has passed through the sub-image quality control path 970 , and the UI image that has passed through the graphics path 980 .

[0225] The post definition adjustment unit 991 can adjust the definition of the synthesized image.

[0226] The local contrast adjustment unit 992 may locally adjust the contrast of the synthesized image with adjusted clarity, and the synthesized image with adjusted contrast may be output to the display 180 .

[0227] The display 180 may display a plurality of images that have passed through the main image quality control path and the sub image quality control path on each split screen.

[0228] Again Figure 5 .

[0229] The controller 170 controls the image qualities of a plurality of images provided through a plurality of candidate applications based on the determined image quality control path ( S511 ).

[0230] The controller 170 can control the image quality of each image according to the image quality control path corresponding to each of the multiple images. Figure 9a as well as Figure 9b Instructions.

[0231] The controller 170 displays the plurality of images of which image quality is controlled on each divided screen of the display 180 ( S513 ).

[0232] On the other hand, after determining that the sizes of the divided screens are different, the controller 170 receives an instruction to select a plurality of candidate applications representing input sources of the divided screens ( S515 ).

[0233] The controller 170 may receive an instruction to select an application matching each split screen of different sizes on the multi-view setting screen.

[0234] exist Figure 7 In the example, assuming that the first split screen item 711 and the second split screen item 713 are of different sizes, the remaining description can be applied. Figure 7 Example of .

[0235] The controller 170 determines an image quality control path according to the size of each of the plurality of split screens and the priority of each of the plurality of selected candidate applications ( S517 ), and executes steps S511 and S513 .

[0236] In one embodiment, when the size of the first split screen displaying the first image of the first candidate application is larger than the size of the second split screen displaying the second image of the second candidate application, regardless of the priority order of the first candidate application and the second candidate application, the controller 170 may determine the path of the first image as the main image quality control path and the path of the second image as the sub-image quality control path.

[0237] That is, the controller 170 may determine the image quality control path by giving greater priority to the size of the split screen than to the priority order of each candidate application.

[0238] This is because users are more concerned about images with larger screen sizes.

[0239] In the case where there is an application that has no influence on the screen size among the selected plurality of candidate applications, the controller 170 may determine the image quality control path considering only the priority order of each candidate application.

[0240] For example, assuming that the priority value of the first candidate application whose screen size is not the object under consideration is 2, and the priority value of the second candidate application whose screen size is the object under consideration is 1, the size of the first split screen displaying the first candidate application is larger than the size of the second split screen displaying the second candidate application.

[0241] The first candidate application does not consider screen size, so even if the size of the first split screen displaying the first candidate application is larger than the size of the second split screen displaying the second candidate application, the controller 170 may only consider the priority order of the first candidate application and the second candidate application.

[0242] In this case, the priority of the first candidate application is lower than that of the second candidate application, so the controller 170 can determine the path of the second image of the second candidate application as the main image quality control path, and determine the path of the first image of the first candidate application as the sub-image quality control path.

[0243] The controller 170 may determine an image quality control path for each candidate application using a second reference table matched with candidate applications, screen size relevance of the candidate applications, and priority values of the candidate applications.

[0244] The second reference table may be stored in the memory 140 of the display apparatus 100 .

[0245] Figure 10 is a diagram illustrating a second reference table according to an embodiment of the present invention.

[0246] Reference Figure 10 The second reference table 1000 may include candidate applications for providing a multi-view function, presence or absence of screen size correlation of each candidate application, and a priority value matched with each candidate application.

[0247] The Live TV app has screen size dependency, and its priority value is 1.

[0248] HDMI applications have no screen size dependency and the priority value is 3.

[0249] Tube applications that provide live streaming services are screen size-dependent and have a priority value of 2.

[0250] Browser applications have no screen size dependency and their priority value is 3.

[0251] The camera application has screen size dependency, with a priority value of 3.

[0252] The smaller the priority value, the higher the priority can be.

[0253] For example, assuming that a browser application and a Tube application are selected, the size of the first split screen matching the browser application is larger than the size of the second split screen matching the camera application.

[0254] According to the second reference table 1000 , there is no screen size correlation for the browser application, so the controller 170 may consider only the priority order of each of the browser application and the Tube application.

[0255] The priority value of the browser application is greater than that of the Tube application, so the controller 170 may determine the path of the Tube application's image as the main image quality control path and determine the path of the browser application's image as the sub-image quality control path.

[0256] In this way, according to the embodiment of the present invention, the screen size correlation and priority of each candidate application are considered simultaneously, so that when providing a multi-view function, images with optimal image quality can be output through each split screen.

[0257] This can reduce the power consumption of the SoC and significantly improve the user's multi-view viewing quality.

[0258] On the other hand, after determining the image quality control path of the input source image input to each divided screen, the user has a need to change the position of the input source image.

[0259] Various methods of changing the position of the input source image (or input image) on the split screen will be described below.

[0260] Figures 11 to 14 These are diagrams for explaining various embodiments of changing the position of an input image displayed on a split screen when the multi-view function is activated.

[0261] First, explain Figure 11 .

[0262] Reference Figure 11 , the display device 100 can respectively display the first input image 1111 and the second input image 1131 on two split screens 1110 and 1130 of the same screen size.

[0263] The display apparatus 100 may receive an instruction to select the first input image 1111 displayed on the first split screen 1110 through the pointer 205 (or cursor) from the remote controlling apparatus 200 .

[0264] That is, the user may press the wheel button 239 a provided on the remote control device 200 to select the first input image 1111 .

[0265] The display apparatus 100 may receive an instruction to move the pointer 205 to the second split screen 1130 from the remote control apparatus 200. As a result, the first input image 1111 may be moved to the right.

[0266] That is, the user can move the remote control device 200 to the right while pressing the scroll button 239 a provided on the remote control device 200 .

[0267] When more than half of the entire area of the first input image 1111 is located on the second split screen 1130 , the display device 100 may display the first input image 1111 on the second split screen 1130 and the second input image 1131 on the first split screen 1110 .

[0268] That is, when more than half of the entire area of the first input image 1111 is located on the second divided screen 1130 , the display device 100 may change the relative positions of the first input image 1111 and the second input image 1131 .

[0269] In this way, when the user utilizes the multi-view function, the position of the input image can be changed by a simple operation of the remote control device 200 .

[0270] On the other hand, the input source (or candidate application) matching the first split screen 1110 can be set as the main image quality control path, and the input source matching the second split screen 1130 can be set as the sub-image quality control path.

[0271] In the display device 100 , the image quality control path of each image may not change as the positions of the first input image 1111 and the second input image 1131 change.

[0272] Secondly, explain Figure 12 .

[0273] Reference Figure 12 , the display device 100 can respectively display the first input image 1211, the second input image 1221, the third input image 1231 and the fourth input image 1241 on the first to fourth split screens 1210, 1220, 1230 and 1240 with the same screen size.

[0274] The display apparatus 100 may receive an instruction to select the third input image 1231 displayed on the third split screen 1230 through the pointer 205 or the cursor from the remote controlling apparatus 200 .

[0275] That is, the user may press the wheel button 239 a provided on the remote control device 200 to select the third input image 1231 .

[0276] The display device 100 may receive an instruction to move the pointer 205 to the second split screen 1220 from the remote control device 200. As a result, the third input image 1231 may be moved to the upper right side.

[0277] That is, the user can move the remote control device 200 to the upper right side while pressing the scroll button 239 a provided on the remote control device 200 .

[0278] The display device 100 may determine the second divided screen 1220 having the largest overlap area with other screens in the entire area of the third input image 1231 as the display position of the third input image 1231 .

[0279] The display device 100 may display the third input image 1231 on the second split screen 1220 , in which the entire area of the third input image 1231 has the largest overlap area compared with other screens, and display the second input image 1221 on the third split screen 1230 .

[0280] That is, the display device 100 may change the relative positions of the second input image 1221 and the third input image 1231 .

[0281] In this way, when the user utilizes the multi-view function, the position of the input image can be changed by a simple operation of the remote control device 200 .

[0282] Secondly, explain Figure 13 .

[0283] Reference Figure 13 , the display device 100 can display the first input image 1311 on the first split screen 1310 , the second input image 1321 on the second split screen 1320 , the third input image 1331 on the third split screen 1330 , and the fourth input image 1341 on the fourth split screen 1340 .

[0284] The second to fourth split screens 1320 , 1330 , and 1340 have the same size, and the first split screen 1310 has the largest size among the four screens.

[0285] That is, the user may press the wheel button 239 a provided on the remote control device 200 to select the fourth input image 1341 .

[0286] The display apparatus 100 may receive an instruction to move the pointer 205 onto the first split screen 1310 from the remote control apparatus 200. As a result, the fourth input image 1341 may move to the left.

[0287] The display device 100 may determine the first divided screen 1310 having the largest overlap area with other screens in the entire area of the fourth input image 1341 as the display position of the fourth input image 1341 .

[0288] The display device 100 may display the fourth input image 1341 on the first split screen 1310 having the largest overlap area among the entire area of the fourth input image 1341 compared with other screens, and may display the first input image 1311 on the fourth split screen 1340 .

[0289] That is, the display device 100 may change the relative positions of the first input image 1311 and the fourth input image 1341 .

[0290] In this way, when the user utilizes the multi-view function, the position of the input image can be changed by a simple operation of the remote control device 200 .

[0291] On the other hand, the input source (or candidate application) matching the first split screen 1310 may be set as the main image quality control path, and the input source matching the fourth split screen 1340 may be set as the sub-image quality control path.

[0292] Under the assumption that there is a screen size correlation between each candidate application corresponding to the first input image 1311 and the fourth input image 1341, according to Figure 5 In an embodiment, a higher priority is given to a candidate application with a larger split screen size.

[0293] As the positions of the first input image 1311 and the fourth input image 1341 change, the display device 100 may change the image quality control path of each image.

[0294] Since the size of the first split screen 1310 is larger than the size of the fourth split screen 1340, the display device 100 can determine the path of the fourth input image 1341 input into the first split screen 1310 as the main image quality control path, and determine the path of the first input image 1311 input into the fourth split screen 1340 as the sub-image quality control path.

[0295] Thus, according to an embodiment of the present invention, when providing multi-view functionality, the image quality control path for the input image can be automatically changed as the position of the input image changes. This allows the user to view the desired input image at optimal quality without having to make separate image quality control settings.

[0296] Secondly, Figure 14 .

[0297] Figure 14This is a diagram illustrating an embodiment in which the position of an input image is changed based on a user's gesture when providing a multi-view function.

[0298] The display device 100 may include a camera 1400 and may recognize a user's gesture based on an image captured by the camera 1400 .

[0299] Reference Figure 14 , the display device 100 can display the first input image 1311 on the first split screen 1310 , the second input image 1321 on the second split screen 1320 , the third input image 1331 on the third split screen 1330 , and the fourth input image 1341 on the fourth split screen 1340 .

[0300] The second to fourth split screens 1320 , 1330 , and 1340 have the same size, and the first split screen 1310 has the largest size among the four screens.

[0301] The display apparatus 100 may display a pointer 205 on the display 180 when recognizing the palm image of the user's open hand.

[0302] The display apparatus 100 may recognize the movement of the palm image and move the pointer 205 according to the movement direction of the palm image.

[0303] Afterwards, when the display device 100 recognizes the fist image, it can select the fourth input image 1341 where the pointer 205 is located.

[0304] The display apparatus 100 may move the selected fourth input image 1341 according to recognizing the movement of the fist image.

[0305] The display device 100 may determine the first divided screen 1310 having the largest overlap area with other screens in the entire area of the fourth input image 1341 as the display position of the fourth input image 1341 .

[0306] When the palm image is recognized, the display device 100 may display the fourth input image 1341 on the first split screen 1310 and the first input image 1311 on the fourth split screen 1340 .

[0307] That is, the display device 100 may change the relative positions of the first input image 1311 and the fourth input image 1341 .

[0308] In this way, when the user utilizes the multi-view function, the position of the input image can be changed with only a simple gesture of the user.

[0309] Figure 15This is a diagram illustrating an example of changing the image quality control path in accordance with a change in the size of a split screen on a multi-view screen.

[0310] Reference Figure 15 , the multi-view screen 1500 may include a first split screen 1510 and a second split screen 1530 having the same size as the first split screen 1510 .

[0311] Assume that the image quality control path of the input source of the first split screen 1510 is set as the main PQ path, and the image quality control path of the input source of the second split screen 1530 is set as the sub-PQ path.

[0312] Also, it is assumed that the input source of the first split screen 1510 and the input source of the second split screen 1530 each have screen size correlation.

[0313] A first input image 1511 is displayed on the first split screen 1510 , and a second input image 1531 is displayed on the second split screen 1530 .

[0314] The display apparatus 100 may receive a zoom-in instruction to enlarge the size of the second split screen 1530 from the remote control apparatus 200 .

[0315] According to the zoom-in instruction, the display device 100 may reduce the size of the first split screen 1510 and enlarge the size of the second split screen 1530 .

[0316] The size of the second split screen 1530 becomes larger than the size of the first split screen 1510, so the display device 100 can change the image quality control path of the first split screen 1510 from the main PQ path to the sub-PQ path, and change the image quality control path of the second split screen 1530 from the sub-PQ path to the main PQ path.

[0317] The screen size of the first split screen 1510 is reduced, so even if the image quality control path of the first split screen 1510 is changed from the main PQ path to the sub-PQ path, the image quality difference perceived by the user is not significant.

[0318] On the other hand, it is assumed that a main PQ path is set for each of the first split screen 1510 and the second split screen 1530 , and the size of the second split screen 1530 is enlarged.

[0319] The display device 100 may turn off or bypass a portion of the image quality control blocks included in the main PQ path of the first split screen 1510 within a range that is not perceptible to the user.

[0320] Figure 16a as well as Figure 16b This is a schematic diagram of the process of each input source passing through the image quality control path and outputting the image on the display when providing multi-view function.

[0321] Figure 16a Here are two examples of split screens of the same size. Figure 16b Here are three examples of split screens of different sizes.

[0322] Reference Figure 16a , the video engine 950 receives two input sources A and B, and temporarily stores the received input sources A and B in the buffer DDR.

[0323] The video engine 950 may determine input source B as a main PQ control path and input source A as a sub-PQ control path.

[0324] Input source B can be processed through the main PQ control path for image quality, and input source A can be processed through the sub-PQ control path for image quality.

[0325] The buffer DDR can store image data after image quality processing. That is, the buffer DDR can store the first output image B (M_PQ) after image quality processing along the main PQ control path and the second output image A (S_PQ) after image quality processing along the sub-PQ control path.

[0326] The first output image B(M_PQ) and the second output image A(S_PQ) may each be displayed on the display 180 .

[0327] Secondly, Figure 16b .

[0328] Reference Figure 16b The video engine 950 receives four input sources A, B, C, and D, and temporarily stores the received input sources A, B, C, and D in the buffer DDR.

[0329] The video engine 950 may determine input source B as a main PQ control path, input source A as a sub-PQ control path, and input sources C and D as graphic paths.

[0330] Input source B can be processed through the main PQ control path for image quality processing, input source A can be processed through the sub-PQ control path for image quality processing, and input sources C and D can be processed through the graphics path for image quality processing.

[0331] The DDR buffer can store image data after image quality processing. Specifically, the DDR buffer can store the first output image B (M_PQ) after image quality processing along the main PQ control path, the second output image A (S_PQ) after image quality processing along the sub-PQ control path, and the third output image C / D (G_PQ) after image quality processing along the graphics path.

[0332] Each of the first output image B (M_PQ), the second output image A (S_PQ), and the third output image C / D (G_PQ) may be displayed on the display 180 in a divided screen manner.

[0333] Figures 17a to 17d This diagram illustrates the image quality control path that the input source passes through as the input source position changes when providing multi-view functionality.

[0334] Figures 17a to 17d Can correspond to Figure 15 Example of .

[0335] Next, the input source can be stored in the buffer DDR in units of lines or frames. Interval can represent the time point used to distinguish consecutive frames.

[0336] Assume that the time point of selecting the split screen for the user to adjust the size of the split screen is Interval K, and the time point of ending setting of the desired size is Interval K+L.

[0337] Furthermore, it is assumed that the multi-view screen includes two split screens of the same size, the input source B is controlled via the main PQ path, and the input source A is controlled via the sub-PQ path.

[0338] Furthermore, it is assumed that the user performs an action to enlarge the size of the split screen output by the input source A.

[0339] Reference Figure 17a The output images B(M_PQ) and A(S_PQ) at the Interval K time point are displayed on the display 180 .

[0340] At Interval K+1, the user is setting the screen size, and multiple input sources are undergoing image quality processing along the main PQ control path and the sub-QP control path.

[0341] The Interval K+2 time point is the time point before the image quality processing of the input sources A and B is performed.

[0342] Secondly, Figure 17b .

[0343] An input for adjusting the screen size is received at the Interval K time point, so at the Interval K+1 time point, the output images B(M_PQ)_scaling and A(S_PQ)_scaling after image quality processing and size adjustment can be displayed on the display 180.

[0344] Furthermore, the size of the second split screen for displaying the output image A(S_PQ)_scaling may be enlarged, and the size of the first split screen for displaying the output image B(M_PQ)_scaling may be reduced.

[0345] Secondly, Figure 17c .

[0346] Before the screen size setting is completed, the input source only undergoes image quality processing, and the output images B(M_PQ)_scaling and A(S_PQ)_scaling at the Interval K+1 time point can be displayed on the display 180 .

[0347] As another example, before the setting of the screen size is completed, a black image may be displayed on the display 180 .

[0348] At the Interval K+L time point, the image quality control paths can be switched between each other according to the image size.

[0349] Secondly, Figure 17d .

[0350] At the Interval K+L time point, the adjustment of the image size is completed.

[0351] At the Interval K+L time point, the output image B(A_PQ)_scaling can be displayed on the reduced first split screen via the sub-PQ control path, and the output image A(M_PQ)_scaling can be displayed on the enlarged second split screen via the main PQ control path.

[0352] In this way, according to the embodiment of the present invention, when adjusting the screen size in a multi-view screen, the user cannot detect the delay caused by switching the image quality control path.

[0353] As a result, users can experience a seamless experience.

[0354] According to an embodiment of the present invention, the above method can be implemented in a processor-readable code format in a medium storing a program. Examples of processor-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

[0355] The application of the display device described above is not limited to the structures and methods of the multiple embodiments described above. The multiple embodiments described above can also be selectively combined with all or part of the structures of each embodiment to achieve various modifications.

Claims

1. A display device comprising: a display that displays a multi-view picture including a plurality of split pictures; as well as A controller that determines an image quality control path for each input source based on the priority of each of the multiple input sources corresponding to each of the multiple split screens, performs image quality processing on each of the multiple input images provided by the multiple input sources according to the determined image quality control path, and displays each of the multiple input images after image quality processing on the multiple split screens.

2. The display device according to claim 1, wherein The above-mentioned image quality control path includes: a main image quality control path, which performs image quality processing by controlling a plurality of image quality control blocks of each of a plurality of image quality elements; and The sub-image quality control path performs image quality processing by controlling a part of the image quality control blocks of a part of the image quality elements among the plurality of image quality elements.

3. The display device according to claim 2, wherein: The plurality of split screens include a first split screen and a second split screen. The multiple input sources include a first input source and a second input source, When the priority of the first input source corresponding to the first split screen is higher than the priority of the second input source corresponding to the second split screen, the controller determines the image quality control path of the first input source as the main image quality control path and determines the image quality control path of the second input source as the sub-image quality control path.

4. The display device according to claim 3, wherein Also includes: a memory for storing a first reference table, wherein the first reference table matches the plurality of input sources and a priority value corresponding to each of the plurality of input sources; The controller determines the priority order of the first input source and the second input source using the first reference table.

5. The display device according to claim 3, wherein The controller receives an instruction to enlarge the second split screen, and when the size of the second split screen is larger than the size of the first split screen, changes the image quality control path of the first input source from the main image quality control path to the sub-image quality control path, and changes the image quality control path of the second input source from the sub-image quality control path to the main image quality control path. The display device according to claim 3 , wherein: The controller receives an instruction for changing a position between a first input image displayed on the first split screen and a second input image displayed on the second split screen, According to the received instruction, the first input image is displayed on the second split screen, and the second input image is displayed on the first split screen.

7. The display device according to claim 1, wherein When the sizes of the plurality of split screens are the same, the controller determines an image quality control path for each input source based on a priority order of each of the plurality of input sources.

8. The display device according to claim 2, wherein: When the sizes of the plurality of divided screens are different, the controller determines the image quality control path of each input source based on the size of each divided screen and the priority order of each of the plurality of input sources.

9. The display device according to claim 8, wherein The plurality of split screens include a first split screen and a second split screen smaller in size than the first split screen. The plurality of input sources include a first input source and a second input source, wherein a priority of the first input source is lower than a priority of the second input source. The controller determines the image quality control path of the first input source as the main image quality control path, and determines the image quality control path of the second input source as the sub-image quality control path.

10. The display device according to claim 8, further comprising: a memory for storing a second reference table, wherein the second reference table matches the plurality of input sources, the screen size correlation of each input source, and the priority value corresponding to each of the plurality of input sources; The controller determines the image quality control path of each input source using the second reference table.

11. The display device according to claim 1, wherein The multi-view screen includes an input list for setting input sources for each split screen.

12. The display device according to claim 11, wherein The controller sets the size of each split screen according to the instruction received through the multi-view screen.

13. The display device according to claim 1, wherein Each of the input sources mentioned above represents an application program provided on the display device.

14. The display device according to claim 2, wherein: The image quality control path further includes a graphics path for image quality processing of the user interface image.

15. A method for controlling image quality of a display device, comprising: a step of displaying a multi-view picture including a plurality of split pictures; a step of determining an image quality control path for each input source based on a priority order of each of the plurality of input sources corresponding to each of the plurality of split screens; a step of performing image quality processing on each of the plurality of input images provided by the above-mentioned input sources according to the determined image quality control path; as well as The step of displaying each of the plurality of input images after image quality processing on the plurality of split screens.

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