Image display device and control method therefor

Abstract

The purpose of the present invention is to make it intuitive and easy to set display quality according to a user's preferences, and the present invention may provide an image display device comprising: a display unit; a storage unit; an interface unit for connecting to at least one of an external device or an external server; and a control unit which displays a plurality of first example images in which a plurality of characteristics of a first image quality component have been respectively applied to a first template image, displays a plurality of second example images in which a plurality of characteristics of a second image quality component have been respectively applied to a second template image, and derives a user-preferred image quality setting value on the basis of a first image quality component characteristic corresponding to a first example image selected by a user from among the plurality of first example images and a second image quality component characteristic corresponding to a second image selected by the user from among the plurality of second example images, and saves the user-preferred image quality setting value.

Description

Video display device and its control method

[0001] The present disclosure relates to a video display device and a control method thereof in which display quality settings can be performed by a user.

[0002] A video display device is a device that has the function of receiving and processing digital images and displaying them, such as a digital TV and monitor.

[0003] Typically, the display quality of a video display device needs to be adjusted to suit the user's preferences. Display quality can be determined by multiple image quality factors, including gamma, contrast, and color temperature.

[0004] A video display device may provide a picture quality setting interface that allows a user to set a display quality level that suits their preferences. The user can set their preferred display quality level on the video display device by selecting settings for each of multiple picture quality components through the picture quality setting interface.

[0005] However, users often lack an intuitive understanding of how each of the multiple image quality components impacts the overall display quality of a video display device. For example, the general public may not understand the meaning of gamma or color temperature.

[0006] Therefore, even if the video display device provides a picture quality setting interface that can be set for each picture quality component, it is often difficult for users to set the display quality they want through this interface.

[0007] Additionally, a user's preferred image quality is significantly influenced by ambient lighting. For example, it's unclear whether image quality settings that suit a user's preferences in a bright environment will also suit a user's preferences in a dark environment.

[0008] In addition, users who use multiple video display devices must set the image quality for each video display device, requiring a lot of time and effort to set the image quality for each of the multiple video display devices.

[0009] The present disclosure is proposed to solve the aforementioned problems, and the purpose is to provide a video display device and a control method thereof that enable a user to intuitively and conveniently perform display quality settings according to his or her preference even if he or she does not know the meaning of each quality component, enable quality setting values ​​derived to suit the user's preference in one ambient light brightness to be utilized in another ambient light brightness, and enable quality setting values ​​derived in one video display device to be utilized in another video display device.

[0010] In order to achieve the above-described object, according to one aspect of the present disclosure, an image display device can be provided, including an interface unit for connecting to at least one of a display unit, a storage unit, an external device, and an external server, and a control unit for displaying a plurality of first example images in which a plurality of characteristics of a first image quality component are respectively applied to a first template image, displaying a plurality of second example images in which a plurality of characteristics of a second image quality component are respectively applied to a second template image, and deriving and storing a user preferred image quality setting value based on a first image quality component characteristic corresponding to a first image selected by a user from among the plurality of first example images and a second image quality component characteristic corresponding to a second image selected by the user from among the plurality of second example images.

[0011] The control unit can control the display of the plurality of second example images in response to the first example image being selected by the user.

[0012] The above plurality of second example images may have the first quality component characteristic corresponding to the selected first example image applied to them.

[0013] The control unit may display a plurality of third example images in which a plurality of characteristics of a third image quality component are each applied to a third template image, and may derive the user preferred image quality setting value further based on the third image quality component characteristic corresponding to a third example image selected by the user from among the plurality of third example images.

[0014] The above control unit can control to display the plurality of third example images in response to the second example image being selected by the user.

[0015] The plurality of third example images may have a first quality component characteristic corresponding to the selected first example image and a second quality component characteristic corresponding to the selected second example image applied thereto.

[0016] The above video display device further includes an ambient light sensor, and the control unit can store the ambient light brightness at the time of deriving the user preferred picture quality setting value as the reference ambient light brightness of the user preferred picture quality setting value.

[0017] The control unit can correct the user preferred picture quality setting value based on a comparison between the ambient light brightness currently detected by the ambient light sensor and the reference ambient light brightness and apply the correction to the display unit.

[0018] The above control unit can store the display specification information of the display unit as the reference display specification information of the user preferred picture quality setting value.

[0019] The control unit can control to upload the user preferred picture quality setting value, the reference ambient light brightness, and the reference display specification information to the external server.

[0020] The above image display device further includes a camera, and the control unit can identify the user by recognizing the user's face captured through the camera, and derive and store the user's preferred image quality settings for each user.

[0021] In addition, according to one aspect of the present disclosure, in order to achieve the above-described purpose, an image display device can be provided, including an interface unit for connecting to at least one of a display unit, a storage unit, an external device, and an external server, and a control unit for downloading a user preferred picture quality setting value and reference display specification information from the external server, and controlling the user preferred picture quality setting value to be corrected and applied to the display unit based on a comparison between the reference display specification information and the specification information of the display unit.

[0022] In addition, according to one aspect of the present disclosure, in order to achieve the above-described object, a method for controlling an image display device can be provided, including a step of displaying a plurality of first example images in which a plurality of characteristics of a first image quality component are respectively applied to a first template image, a step of displaying a plurality of second example images in which a plurality of characteristics of a second image quality component are respectively applied to a second template image, and a step of deriving and storing a user preferred image quality setting value based on a first image quality component characteristic corresponding to a first image selected by a user from among the plurality of first example images and a second image quality component characteristic corresponding to a second image selected by the user from among the plurality of second example images.

[0023] In addition, according to one aspect of the present disclosure, in order to achieve the aforementioned purpose, a method for controlling a video display device may be provided, including the steps of: connecting to an external server; downloading user preferred picture quality settings and reference display specification information from the external server; and correcting the user preferred picture quality settings based on a comparison between the reference display specification information and specification information of the display unit and applying the corrected settings to the display unit.

[0024] The effects of the video display device and its control method according to the present disclosure are described as follows.

[0025] According to at least one aspect of the present invention, there is an advantage in that a user can intuitively and conveniently perform display quality settings according to his / her preference even if he / she does not know the meaning of each of the plurality of quality components that determine the quality.

[0026] Additionally, at least one aspect of the present disclosure provides the advantage of allowing image quality settings derived to suit a user's preference at one ambient light brightness to be utilized at another ambient light brightness, thereby eliminating the need for the user to manually adjust display image quality settings to suit his or her preference each time the ambient light brightness changes.

[0027] In addition, according to at least one aspect of the present disclosure, there is an advantage in that the image quality setting values ​​derived from one image display device can be utilized in other image display devices, thereby eliminating the need for a user of multiple image display devices to individually set the display quality settings for each image display device to suit his or her preference.

[0028] FIG. 1 is a schematic block diagram of a video display device according to an embodiment of the present disclosure.

[0029] FIG. 2 illustrates a video display device and an external device according to one aspect of the present disclosure.

[0030] Figure 3 illustrates an exemplary screen for a user to set display quality in a conventional video display device.

[0031] FIG. 4 illustrates a flowchart for performing display quality setting of a video display device according to one aspect of the present disclosure.

[0032] Figure 5 illustrates a method for initiating the image quality setting process of Figure 4.

[0033] Figures 6 to 13 are examples of image quality setting screens that can be displayed during the image quality setting process of Figure 4.

[0034] FIG. 14 illustrates an exemplary screen for a user to set display quality in a video display device according to one aspect of the present disclosure.

[0035] FIG. 15 is a flowchart for applying user preferred picture quality settings in a video display device according to one aspect of the present disclosure.

[0036] FIG. 16 illustrates a flowchart for performing display quality setting of a video display device according to one aspect of the present disclosure.

[0037] FIG. 17 illustrates a video display device and an external device according to one aspect of the present disclosure.

[0038] FIG. 18 is a flowchart for applying user preferred picture quality settings in a video display device according to one aspect of the present disclosure.

[0039] FIG. 19 illustrates an example of user preference picture quality tendency analysis according to one aspect of the present disclosure.

[0040] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components will be given the same reference numbers, and redundant descriptions thereof will be omitted. The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably only for the convenience of writing the specification, and do not in themselves have distinct meanings or roles. In addition, when describing the embodiments disclosed in this specification, if it is determined that a specific description of a related known technology may obscure the gist of the embodiments disclosed in this specification, a detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention.

[0041] The suffixes “module” and “part” used for components in the following description are given simply for the convenience of writing this specification, and the “module” and “part” may be used interchangeably.

[0042] Additionally, these components may be implemented as separate individual hardware modules, or as two or more hardware modules, or as two or more components may be implemented as one hardware module, and in some cases, they may also be implemented as software.

[0043] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings and the contents described in the attached drawings, but the present invention is not limited or restricted by the embodiments.

[0044] The terms used in this specification have been selected from widely used and current terms, taking into account the functions of the present invention. However, these terms may vary depending on the intentions or practices of those skilled in the art, the emergence of new technologies, etc. Furthermore, in certain cases, terms may be arbitrarily selected by the applicant, in which case their meanings will be described in the description of the relevant invention. Therefore, it should be noted that the terms used in this specification should be interpreted based on their substantive meaning and the overall content of this specification, rather than simply their names.

[0045] Figure 1 is a schematic block diagram of a video display device according to one aspect of the present disclosure. The video display device may be a display device capable of video output, including a display panel. For example, the video display device may include a computer monitor, a TV, a projector, a smartphone, a laptop, or a digital signage device.

[0046] Referring to FIG. 1, a video display device (100) according to one aspect of the present disclosure may include a broadcast receiving unit (105), an external device interface unit (135), a storage unit (140), a user input interface unit (150), a control unit (170), a display unit (180), an audio output unit (185), a power supply unit (190), and a photographing unit (not shown). If the video display device (100) is a computer monitor, it may not include at least one of the broadcast receiving unit (105), the audio output unit (183), and the photographing unit.

[0047] The broadcast receiving unit (105) may include a tuner (110), a demodulator (120), and a network interface unit (130). Of course, if necessary, it may be designed to include a tuner (110) and a demodulator (120) but not a network interface unit (130), and conversely, it may be designed to include a network interface unit (130) but not a tuner (110) and a demodulator (120).

[0048] The tuner (110) selects an RF broadcast signal corresponding to a channel selected by the user or all pre-stored channels among RF (Radio Frequency) broadcast signals received through an antenna. In addition, it converts the selected RF broadcast signal into an intermediate frequency signal or a baseband video or audio signal.

[0049] For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF), and if it is an analog broadcast signal, it is converted into an analog baseband video or audio signal (CVBS / SIF). That is, the tuner (110) can process both digital broadcast signals and analog broadcast signals. The analog baseband video or audio signal (CVBS / SIF) output from the tuner (110) can be directly input to the control unit (170).

[0050] Additionally, the tuner (110) can receive RF broadcast signals of a single carrier according to the ATSC (Advanced Television System Committee) method or RF broadcast signals of multiple carriers according to the DVB (Digital Video Broadcasting) method.

[0051] Meanwhile, the tuner (110) can sequentially select RF broadcast signals of all broadcast channels stored through a channel memory function among RF broadcast signals received through an antenna and convert them into intermediate frequency signals or baseband video or audio signals.

[0052] The demodulation unit (120) receives a digital IF signal (DIF) converted by the tuner (110) and performs a demodulation operation.

[0053] For example, if the digital IF signal output from the tuner (110) is in ATSC format, the demodulation unit (120) performs, for example, 8-VSB (8-Vestigal Side Band) demodulation. In addition, the demodulation unit (120) may also perform channel decoding. To this end, the demodulation unit (120) may be equipped with a Trellis Decoder, a De-interleaver, a Reed-Solomon Decoder, etc., and may perform Trellis decoding, deinterleaving, and Reed-Solomon decoding.

[0054] For example, if the digital IF signal output from the tuner (110) is in the DVB format, the demodulation unit (120) performs, for example, COFDMA (Coded Orthogonal Frequency Division Modulation) demodulation. In addition, the demodulation unit (120) may also perform channel decoding. To this end, the demodulation unit (120) may be equipped with a convolution decoder, a deinterleaver, a Reed-Solomon decoder, and the like, and may perform convolution decoding, deinterleaving, and Reed-Solomon decoding.

[0055] The demodulator (120) can output a stream signal (TS) after performing demodulation and channel decoding. At this time, the stream signal may be a signal in which a video signal, an audio signal, or a data signal is multiplexed. For example, the stream signal may be an MPEG-2 TS (Transport Stream) in which a video signal in the MPEG-2 standard and an audio signal in the Dolby AC-3 standard are multiplexed. Specifically, the MPEG-2 TS may include a 4-byte header and a 184-byte payload.

[0056] Meanwhile, the above-described demodulation unit (120) can be provided separately according to the ATSC method and the DVB method. That is, it can be provided as an ATSC demodulation unit and a DVB demodulation unit.

[0057] The stream signal output from the demodulation unit (120) can be input to the control unit (170). The control unit (170) performs demultiplexing, image / audio signal processing, etc., and then outputs the image to the display unit (180) and outputs the audio to the audio output unit (185).

[0058] The external device interface unit (135) can connect an external device and a video display device (100). To this end, the external device interface unit (135) may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

[0059] The external device interface unit (135) can be connected to external devices such as a DVD (Digital Versatile Disk), Blu-ray, game device, camera, camcorder, computer (laptop), etc., via wired / wireless connection. The external device interface unit (135) transmits a video, audio, or data signal input from the outside through the connected external device to the control unit (170) of the video display device (100). In addition, the video, audio, or data signal processed by the control unit (170) can be output to the connected external device. For this purpose, the external device interface unit (135) may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

[0060] The A / V input / output section may include a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, an S-video terminal (analog), a DVI (Digital Visual Interface) terminal, an HDMI (High Definition Multimedia Interface) terminal, an RGB terminal, a D-SUB terminal, etc., so as to input video and audio signals from an external device to the video display device (100).

[0061] The wireless communication unit can perform short-range wireless communication with other electronic devices. The video display device (100) can be connected to a network with other electronic devices according to communication standards such as Bluetooth, RFID (Radio Frequency Identification), IrDA (Infrared Data Association), UWB (Ultra Wideband), ZigBee, and DLNA (Digital Living Network Alliance), for example.

[0062] In addition, the external device interface unit (135) can be connected to various set-top boxes through at least one of the various terminals described above, and can perform input / output operations with the set-top box.

[0063] Meanwhile, the external device interface unit (135) can receive an application or a list of applications in an adjacent external device and transmit it to the control unit (170) or storage unit (140).

[0064] The network interface unit (130) provides an interface for connecting the video display device (100) to a wired / wireless network including the Internet. The network interface unit (130) may be equipped with, for example, an Ethernet terminal for connection to a wired network, and may use, for example, WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed ​​Downlink Packet Access) communication standards for connection to a wireless network.

[0065] The network interface unit (130) can transmit or receive data to or from other users or other electronic devices via the connected network or another network linked to the connected network. In particular, it can transmit some content data stored in the video display device (100) to a selected user or electronic device among other users or other electronic devices pre-registered in the video display device (100).

[0066] Meanwhile, the network interface unit (130) can access a predetermined web page via the connected network or another network linked to the connected network. That is, it can access a predetermined web page via the network and transmit or receive data with the corresponding server. In addition, it can receive content or data provided by a content provider or network operator. That is, it can receive content such as movies, advertisements, games, VOD, broadcast signals, and other related information provided by a content provider or network provider via the network. In addition, it can receive firmware update information and update files provided by the network operator. In addition, it can transmit data to the Internet or to a content provider or network operator.

[0067] In addition, the network interface unit (130) can select and receive a desired application from among applications open to the public through the network.

[0068] According to an embodiment, the network interface unit (130) may, when a game application is executed on a video display device, transmit or receive predetermined data with a user terminal connected to the video display device through a network. In addition, the network interface unit may transmit or receive predetermined data with a server that stores game scores.

[0069] The storage unit (140) may store programs for each signal processing and control within the control unit (170), and may also store signal-processed images, voices, or data signals.

[0070] In addition, the storage unit (140) may perform a function for temporary storage of video, audio, or data signals input from the external device interface unit (135) or the network interface unit (130). In addition, the storage unit (140) may store information regarding a specific broadcast channel through a channel memory function.

[0071] Additionally, the storage unit (140) can store an application or a list of applications input from the external device interface unit (135) or the network interface unit (130).

[0072] Additionally, according to an embodiment, the storage unit (140) can store unique information and game play information of a user terminal used as a game controller when providing a game application on a video display device.

[0073] The storage unit (140) may include at least one type of storage medium, for example, a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, an SD or XD memory, etc.), RAM, or ROM (for example, an EEPROM). The video display device (100) may play content files (video files, still image files, music files, document files, application files, etc.) stored in the storage unit (140) and provide them to the user.

[0074] Although Fig. 1 illustrates an embodiment in which the storage unit (140) is provided separately from the control unit (170), the scope of the present invention is not limited thereto. The storage unit (140) may also be included within the control unit (170).

[0075] The user input interface unit (150) transmits a signal input by the user to the control unit (170) or transmits a signal from the control unit (170) to the user.

[0076] For example, the user input interface unit (150) may receive and process control signals such as power on / off, channel selection, and screen setting from the remote control device (200) according to various communication methods such as RF (Radio Frequency) communication method and infrared (IR) communication method, or may process control signals from the control unit (170) to be transmitted to the remote control device (200).

[0077] Additionally, for example, the user input interface unit (150) can transmit a control signal input from a local key (not shown) such as a power key, channel key, volume key, or setting key to the control unit (170).

[0078] In addition, for example, the user input interface unit (150) may transmit a control signal input from a sensing unit (not shown) that senses a user's gesture to the control unit (170), or transmit a signal from the control unit (170) to the sensing unit (not shown). Here, the sensing unit (not shown) may include a touch sensor, a voice sensor, a position sensor, a motion sensor, etc.

[0079] The control unit (170) can demultiplex an input stream or process demultiplexed signals through a tuner (110), a demodulator (120), or an external device interface unit (135) to generate and output a signal for video or audio output.

[0080] The image signal processed by the control unit (170) can be input to the display unit (180) and displayed as an image corresponding to the image signal. In addition, the image signal processed by the control unit (170) can be input to an external output device through the external device interface unit (135).

[0081] The voice signal processed in the control unit (170) can be output as audio to the audio output unit (185). In addition, the voice signal processed in the control unit (170) can be input to an external output device through the external device interface unit (135).

[0082] Although not shown in FIG. 1, the control unit (170) may include a demultiplexing unit, an image processing unit, etc.

[0083] In addition, the control unit (170) can control the overall operation within the video display device (100). For example, the control unit (170) can control the tuner (110) to select (tune) an RF broadcast corresponding to a channel selected by a user or a pre-stored channel.

[0084] In addition, the control unit (170) can control the video display device (100) by a user command or internal program input through the user input interface unit (150). In particular, it can connect to a network and enable the user to download a desired application or application list into the video display device (100).

[0085] For example, the control unit (170) controls the tuner (110) to input a signal of a selected channel according to a predetermined channel selection command received through the user input interface unit (150). Then, the control unit processes the video, audio, or data signal of the selected channel. The control unit (170) enables the channel information selected by the user to be output through the display unit (180) or the audio output unit (185) together with the processed video or audio signal.

[0086] As another example, the control unit (170) allows a video signal or audio signal from an external device, for example, a camera or camcorder, input through the external device interface unit (135) to be output through the display unit (180) or the audio output unit (185) in accordance with an external device video playback command received through the user input interface unit (150).

[0087] Meanwhile, the control unit (170) can control the display unit (180) to display an image. For example, the control unit (170) can control the display unit (180) to display a broadcast image input through the tuner (110), an external input image input through the external device interface unit (135), an image input through the network interface unit, or an image stored in the storage unit (140). At this time, the image displayed on the display unit (180) can be a still image or a moving image, and can be a 2D image or a 3D image.

[0088] Additionally, the control unit (170) can control content playback. The content may be content stored within the video display device (100), received broadcast content, or externally input content. The content may be at least one of broadcast video, externally input video, audio files, still images, connected web screens, and document files.

[0089] Meanwhile, in relation to the embodiment of the present invention, the control unit (170) can control the display unit (180) to display the home screen according to an input for moving to the home screen.

[0090] The home screen may include a plurality of card objects classified by content source. The card objects may include at least one of a card object representing a thumbnail list of broadcast channels, a card object representing a broadcast guide list, a card object representing a broadcast reservation list or recording list, and a card object representing a media list within the video display device or within a device connected to the video display device. In addition, the home screen may further include at least one of a card object representing a list of connected external devices and a card object representing a list related to calls.

[0091] Additionally, the home screen may further include an application menu having at least one executable application item.

[0092] Meanwhile, when there is a card object movement input, the control unit (170) can control the card object to be moved and displayed, or a card object not displayed on the display unit (180) to be moved and displayed on the display unit (180).

[0093] Meanwhile, the control unit (170) can control the display unit (180) to display an image corresponding to a card object when a certain card object is selected from among multiple card objects in the home screen.

[0094] Meanwhile, the control unit (170) can control to display an object indicating the received broadcast image and information related to the broadcast image within a card object displaying the broadcast image. In addition, the size of the broadcast image can be controlled to be fixed by a lock setting.

[0095] Meanwhile, the control unit (170) can control to display a setup object for at least one of video settings, audio settings, screen settings, reservation settings, pointer settings of a remote control device, and network settings within the home screen.

[0096] Meanwhile, the control unit (170) may also control to display objects for login, help, or exit items in one area of ​​the home screen.

[0097] Meanwhile, the control unit (170) can control an area of ​​the home screen to display an object indicating the number of total card objects or the number of card objects displayed on the display unit (180) among the total card objects.

[0098] Meanwhile, the control unit (170) can control the display unit (180) to display the card object in full screen mode when a card object name within a given card object is selected among the card objects displayed on the display unit (180).

[0099] Meanwhile, when an incoming call is received within a connected external device or video display device, the control unit (170) can control to focus and display a call-related card object among a plurality of card objects, or to move and display a call-related card object within the display unit (180).

[0100] Meanwhile, when entering the application view item, the control unit (170) can control to display an application or a list of applications that can be downloaded from within the video display device (100) or from an external network.

[0101] The control unit (170) can control the installation and execution of applications downloaded from an external network, along with various user interfaces. Furthermore, it can control the display unit (180) to display images related to the running applications, based on the user's selection.

[0102] Meanwhile, although not shown in the drawing, it is also possible to further include a channel browsing processing unit that generates a thumbnail image corresponding to a channel signal or external input signal.

[0103] The channel browsing processing unit can receive a stream signal (TS) output from the demodulation unit (120) or a stream signal output from the external device interface unit (135), extract an image from the input stream signal, and generate a thumbnail image. The generated thumbnail image can be input to the control unit (170) as is or after being encoded. In addition, the generated thumbnail image can also be encoded in a stream form and input to the control unit (170). The control unit (170) can display a thumbnail list including a plurality of thumbnail images on the display unit (180) using the input thumbnail images. Meanwhile, the thumbnail images in the thumbnail list can be updated sequentially or simultaneously. Accordingly, the user can easily understand the contents of a plurality of broadcast channels.

[0104] The display unit (180) converts the image signal, data signal, OSD signal processed by the control unit (170) or the image signal, data signal, etc. received from the external device interface unit (135) into R, G, and B signals to generate a driving signal.

[0105] The display unit (180) may be a PDP, LCD, OLED, flexible display, 3D display, etc.

[0106] Meanwhile, the display unit (180) is configured as a touch screen and can be used as an input device in addition to an output device.

[0107] The audio output unit (185) receives a signal processed by the control unit (170), for example, a stereo signal, a 3.1 channel signal, or a 5.1 channel signal, and outputs it as audio. The audio output unit (185) can be implemented as various types of speakers.

[0108] Meanwhile, in order to detect a user's gesture, a sensing unit (not shown) including at least one of a touch sensor, a voice sensor, a position sensor, and a motion sensor, as described above, may be further provided in the image display device (100). A signal detected by the sensing unit (not shown) may be transmitted to the control unit (170) via the user input interface unit (150).

[0109] Meanwhile, a camera unit (not shown) for filming a user may be further provided. Image information captured by the camera unit (not shown) may be input to the control unit (170).

[0110] The control unit (170) may detect the user's gesture by using an image captured from a shooting unit (not shown) or a signal detected from a sensing unit (not shown), individually or in combination.

[0111] The power supply unit (190) supplies power to the entire video display device (100).

[0112] In particular, power can be supplied to a control unit (170) that can be implemented in the form of a system on chip (SOC), a display unit (180) for displaying images, and an audio output unit (185) for audio output.

[0113] For this purpose, the power supply unit (190) may be equipped with a converter (not shown) that converts AC power into DC power. Meanwhile, for example, when the display unit (180) is implemented as a liquid crystal panel equipped with a plurality of backlight lamps, an inverter (not shown) capable of PWM operation may be further equipped for brightness variable or dimming operation.

[0114] The remote control device (200) transmits user input to the user input interface unit (150). To this end, the remote control device (200) may use Bluetooth, RF (Radio Frequency) communication, infrared (IR) communication, UWB (Ultra Wideband), ZigBee, etc.

[0115] In addition, the remote control device (200) can receive video, voice or data signals output from the user input interface unit (150) and display them on the remote control device (200) or output voice or vibration.

[0116] The above-described video display device (100) may be a digital broadcast receiver capable of receiving at least one of digital broadcasting in the ATSC format (8-VSB format), digital broadcasting in the DVB-T format (COFDM format), and digital broadcasting in the ISDB-T format (BST-OFDM format) as a fixed type.

[0117] Meanwhile, the block diagram of the image display device (100) illustrated in FIG. 1 is a block diagram for one embodiment of the present invention. Each component of the block diagram may be integrated, added, or omitted depending on the specifications of the image display device (100) actually implemented. That is, two or more components may be combined into one component, or one component may be subdivided into two or more components, as needed. In addition, the functions performed by each block are intended to explain an embodiment of the present invention, and the specific operations or devices thereof do not limit the scope of the present disclosure.

[0118] Hereinafter, with reference to FIG. 2, the image display device (100) of FIG. 1 will be examined in more detail. FIG. 2 illustrates an image display device and an external device according to one aspect of the present disclosure.

[0119] Referring to FIG. 2, the video display device (100) may further include an ambient light sensor (153) and a camera (155) positioned to face the front.

[0120] Although not shown, the video display device (100) may further include a user input unit (not shown) for receiving commands or information from a user. Such a user input unit may include a mechanical input means (e.g., a button located on the front, rear, or side of the video display device (100), a dome switch, a jog wheel, a jog switch, etc.) and / or a touch input means. As an example, the touch input means may include a virtual key, a soft key, or a visual key displayed on the display unit (180) through software processing.

[0121] The video display device (100) can be connected to an external device (300) by wire (or wirelessly) through an external device interface unit (135). For example, the video display device (100) can be connected to the external device (300) by wire using a method such as HDMI (High Definition Multimedia Interface), DP (DisplayPort), USB (Universal Serial Bus), DVI (Digital Visual Interface), or D-SUB (D-subminiature). The video display device (100) can communicate with the external device (300) according to the DDCCI (Display Data Channel Command Interface) standard.

[0122] The video display device (100) may be connected to an external device (300) via a network interface unit (130) via a wired (or wireless) connection.

[0123] The video display device (100) can receive and output video-related signals or data from an external device (300) through an external device interface unit (135) or a network interface unit (130). In addition, the video display device (100) can transmit various types of information or data to an external device (300) through the external device interface unit (135) or a network interface unit (130).

[0124] The external device (300) may be, for example, a computer, a laptop, or a smartphone (but is not limited thereto).

[0125] The external device (300) may include a user input unit (323), an interface unit (330), a storage unit (340), and a control unit (370).

[0126] The user input unit (323) is for receiving commands or information from the user, and may include a mechanical input means and / or a touch input means. As an example, the touch input means may include a virtual key, a soft key, or a visual key displayed through software processing.

[0127] The interface unit (330) serves as a passageway for various types of devices (e.g., video display devices) connected to the external device (300). The interface unit (330) may include at least one of a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, an audio I / O (Input / Output) port, a video I / O (Input / Output) port, an earphone port, and a wired / wireless communication unit. The external device (300) may perform appropriate control related to another connected device in response to another device being connected to the interface unit (330).

[0128] An external device (300) can be connected to the video display device (100) via a wired (or wireless) connection through an interface unit (330).

[0129] The storage unit (340) stores data that supports various functions of the external device (300). The storage unit (340) can store a plurality of application programs (or applications) running on the external device (300), data for the operation of the external device (300), and commands. At least some of these application programs can be downloaded from an external server via wireless communication. The application programs can be stored in the storage unit (340), installed on the external device (300), and driven by the control unit (370) to perform the operation (or function) of the external device.

[0130] In addition to the operations related to the above application program, the control unit (370) typically controls the overall operation of the external device (300). The control unit (370) can provide or process appropriate information or functions to the user by processing various signals, data, information, etc. or by operating an application program stored in the storage unit (340).

[0131] In a broad sense, the video display device (100) and the external device (300) may be understood as one video display device.

[0132] Hereinafter, with reference to FIG. 3, a method for a user to set display quality in a conventional video display device will be described. FIG. 3 illustrates an exemplary screen for a user to set display quality in a conventional video display device.

[0133] As illustrated in (3-1) of FIG. 3, a picture quality setting screen (1000) may be displayed on a video display device. The picture quality setting screen (1000) may be displayed in response to a user command for setting display quality input to the video display device (100). The picture quality setting screen (1000) may be displayed in full screen or partial screen in an OSD (On Screen Display) manner on the display unit (180).

[0134] The image quality setting screen (1000) can display multiple menus, among which we will look at the screen adjustment menu (1100) and the color adjustment menu (1200).

[0135] When the screen adjustment menu (1100) is selected by the user in the image quality setting screen (1000) of (3-1) of FIG. 3, the image quality setting screen (1000) may display submenus for setting a plurality of image quality components, such as a brightness menu (1110), a contrast menu (1120), and a sharpness menu (1130), as shown in (3-2) of FIG. 3.

[0136] When the color adjustment menu (1200) is selected by the user in the image quality setting screen (1000) of (3-1) of FIG. 3, the image quality setting screen (1000) may display submenus for setting a plurality of image quality components, such as a gamma menu (1210), a color temperature menu (1220), etc., as shown in (3-3) of FIG. 3.

[0137] However, since users do not know what each of the multiple picture quality components means, it may be difficult to intuitively know what effect each of these settings has on the overall display quality of the video display device.

[0138] Although not shown, multiple image quality modes (e.g., movie mode, reading mode, etc.) set by the manufacturer of the video display device at the time of shipment from the factory may be displayed on the image quality setting screen (1000), and the display image quality setting may be determined according to the image quality mode selected by the user.

[0139] However, it can be inconvenient for users because there are many cases where none of the multiple picture quality modes satisfactorily matches their preferences.

[0140] Hereinafter, with reference to FIG. 4, a method will be described to enable display quality settings to be performed in a simple manner while better meeting user preferences. FIG. 4 illustrates a flowchart for setting the display quality of a video display device according to one aspect of the present disclosure.

[0141] First, the image quality setting application according to the present disclosure may be executed, and a image quality setting process according to the executed image quality setting application may be initiated. [S4010]. The image quality setting application may be stored in the storage unit (140) of the video display device (100) or may be stored in the storage unit (340) of the external device (300).

[0142] The control unit (170) of the video display device (100) can control the execution of a picture quality setting application and display the execution screen on the display unit (180) of the video display device (100).

[0143] Alternatively, the control unit (370) of the external device (300) may execute a picture quality setting application and transmit the execution screen to the video display device (100), and the control unit (170) of the video display device (100) may receive the execution screen of the picture quality setting application and control it to display it on the display unit (180).

[0144] Since the image quality setting application can be executed on either the video display device (100) or the external device (300), the following will explain the image quality setting application running on either of these from a software perspective.

[0145] The image quality setting application can obtain current ambient light brightness information and / or display specification information of the image display device (100) from the image display device (100) [S4020]. The above step S4020 may be executed before the image quality setting process is initiated.

[0146] The display specification information may include, for example, at least one of display type, resolution, and maximum output brightness. The use of ambient light brightness information and / or display specification information will be described later. If the ambient light brightness information and / or display specification information are not utilized, step S4020 may be omitted.

[0147] The image quality setting application may sequentially provide multiple image quality setting screens to determine the user's preferred image quality (i.e., customized image quality) [S4030 to S4080]. The multiple image quality setting screens may each correspond to multiple image quality components that constitute the image quality. In other words, each image quality setting screen is intended to determine the user's preference for each image quality component.

[0148] First, the image quality setting application can provide an image quality setting screen to determine the user's preference for image quality components mainly related to brightness [S4030, S4040, S4050].

[0149] For this purpose, for example, the image quality setting application may sequentially provide a gamma setting screen, a contrast setting screen, and a low-grayscale setting screen. With respect to brightness, as illustrated in FIG. 4, it is preferable to determine the user's preferences in the order of gamma [S4030], contrast [S4040], and low-grayscale [S4050], but they may be determined in a different order. With respect to brightness, an image quality setting screen may be additionally provided to determine the user's preferences for other image quality components, and of course, at least one of these may be omitted.

[0150] Next, the image quality setting application may provide an image quality setting screen to determine the user's preferences for image quality components mainly related to color [S4060, S4070, S4080].

[0151] For this purpose, for example, the image quality setting application may sequentially provide a color temperature setting screen, a color saturation setting screen, and a sharpness setting screen. With respect to color, as illustrated in FIG. 4, it is preferable to determine the user's preferences in the order of color temperature [S4060], color saturation [S4070], and sharpness [S4080], but they may be determined in a different order. With respect to color, an image quality setting screen may be additionally provided to determine the user's preferences for other image quality components, or at least one of these may be omitted.

[0152] The image quality setting application can derive user preferred image quality settings (i.e., user-customized image quality settings) based on the user's preferences related to brightness and color identified through multiple image quality setting screens and store them in the storage unit (140) of the video display device (100) and / or the storage unit (340) of the external device (300) [S4090]. The user preferred image quality settings can include individual settings for each of multiple image quality components.

[0153] The image quality setting application can apply the user preferred image quality setting values ​​derived above to the image display device (100) [S4100]. The image display device (100) can output a screen according to the applied image quality setting values.

[0154] Meanwhile, in order to enable the user to intuitively recognize the derived user preferred image quality setting value, the image quality setting application may alternately or simultaneously output an image with the derived user preferred image quality setting value applied when the derived user preferred image quality setting value is applied to an example image, and an image with the derived user preferred image quality setting value not applied when the derived user preferred image quality setting value is not applied to the same example image [S4110].

[0155] The order of the above steps S4100 and S4110 may be switched.

[0156] When the image quality setting process described above is repeated by the same user, the image quality component items that the user is expected to prefer are automatically selected by analyzing the user's accumulated image quality tendencies during that time, and the user may input a selection only for image quality component items for which a clear tendency has not been identified.

[0157] Hereinafter, with reference to FIG. 5, the initiation of a quality setting process according to one aspect of the present disclosure will be described. FIG. 5 illustrates a method for initiating the quality setting process of FIG. 4.

[0158] As shown in (5-1) of FIG. 5, when the image quality setting application is executed, the image quality setting application execution screen (2000) can be displayed on the display unit (180) of the video display device (100).

[0159] The image quality setting process of FIG. 4 may be initiated in response to a user command for selecting a custom screen menu (2100) on the image quality setting application execution screen (2000). The user command for selecting the custom screen menu (2100) may be input, for example, through a user input unit (323) of an external device (300).

[0160] Alternatively, as illustrated in (5-2) of FIG. 5, when the user input unit (123) of the image display device (100) is operated, the control unit (170) of the image display device (100) can control the display unit (180) to display a control screen (3000) in OSD mode.

[0161] The image quality setting process of FIG. 4 can be initiated by the user selecting the setting menu (3100) through the user input unit (123) on the control screen (3000). If the screen setting application has not yet been executed when the setting menu (3100) is selected, the control unit (170) of the video display device (100) or the control unit (370) of the external device (300) can control the execution of the screen setting application and immediately initiate the image quality setting process.

[0162] Alternatively, although not shown, when the screen setting application is executed when no user preferred picture quality settings are stored in the storage (140) of the video display device (100) and / or the storage (340) of the external device (300), the screen setting application may automatically initiate the picture quality setting process.

[0163] Hereinafter, the image quality setting process of FIG. 4 will be examined in more detail with reference to FIGS. 6 to 13. FIGS. 6 to 13 are examples of image quality setting screens that may be displayed during the image quality setting process of FIG. 4.

[0164] As illustrated in FIG. 6, when the image quality setting process is initiated, the image quality setting application can display an image quality setting screen (i.e., image quality setting process initiation screen) (4100) on the display unit (180) of the video display device (100).

[0165] The image quality setting process begins in earnest in response to a user command to select the start icon (4110) on the image quality setting process start screen (4100).

[0166] A user command for selecting a start menu (4110) can be input through a user input unit (323) of an external device (300) or a user input unit (123) of a video display device. It goes without saying that the user selection described below can also be performed through the user input unit (323) of an external device (300) or the user input unit (123) of a video display device.

[0167] As illustrated in FIG. 7, the image quality setting application can display an image quality setting screen (i.e., gamma setting screen) (4200) to determine the user's gamma preference on the display unit (180) of the video display device (100).

[0168] The gamma setting screen (4200) may display a plurality of example images (4210 to 4260) in which different gamma characteristics are applied to a template image, as long as changes in the gamma characteristics (or gamma values) can be visually well expressed. In Fig. 7, six example images (4210 to 4260) are shown as being displayed, but it is to be understood that more or fewer example images may be displayed.

[0169] The gamma characteristics corresponding to each of the plurality of example images (4210 to 4260) can be selected by considering the display specification information described above. That is, a plurality of representative gamma characteristics are selected within the gamma characteristic range allowed by the image display device (100), and the plurality of representative gamma characteristics are applied to each of the template images, thereby generating a plurality of example images (4210 to 4260).

[0170] In addition, the gamma characteristic corresponding to each of the plurality of example images (4210 to 4260) may be selected by further considering the current ambient light brightness information described above. That is, each of the plurality of representative gamma characteristics selected based on the display specification information may be modified according to the current ambient light brightness information, and the modified plurality of representative gamma characteristics may be applied to each of the template images, thereby generating the plurality of example images (4210 to 4260).

[0171] In response to a user command to select one of a plurality of example images from the gamma setting screen (4200) and then select the next icon (4270), the image quality setting application can complete the determination of the user's gamma preference.

[0172] The image quality setting application can utilize the gamma characteristics corresponding to the selected example image in deriving the user preference setting value.

[0173] Meanwhile, when the image quality setting process is initiated, the image quality setting screen (i.e., gamma setting screen) of FIG. 7 may be displayed immediately without displaying the image quality setting process initiation screen (4100) of FIG. 6.

[0174] Once the user's gamma preference is determined, the image quality setting application can display a image quality setting screen (i.e., contrast setting screen) (4300) for determining the user's contrast preference on the display unit (180) of the video display device (100), as illustrated in FIG. 8.

[0175] The contrast setting screen (4300) can display a plurality of example images (4310 to 4360) in which changes in contrast characteristics (or contrast values) can be visually well expressed and in which different contrast characteristics are applied to a template image to which a previously selected gamma characteristic has been applied. In Fig. 8, six example images (4310 to 4360) are shown as being displayed, but it is to be understood that more or fewer example images can be displayed.

[0176] The contrast characteristics corresponding to each of the plurality of example images (4310 to 4360) can be selected by further considering the display specification information described above. That is, a plurality of representative contrast characteristics are selected within the contrast characteristic range allowed by the image display device (100), and the plurality of representative contrast characteristics are applied to each of the template images, thereby generating a plurality of example images (4310 to 4360).

[0177] In addition, the contrast characteristic corresponding to each of the plurality of example images (4310 to 4360) may be selected by further considering the current ambient light brightness information described above. That is, each of the plurality of representative contrast characteristics selected based on the display specification information may be modified according to the current ambient light brightness information, and the modified plurality of representative contrast characteristics may be applied to each of the template images, thereby generating the plurality of example images (4310 to 4360).

[0178] Additionally, the contrast characteristics corresponding to each of the plurality of example images (4310 to 4360) may be selected by further considering the previously selected gamma characteristics. That is, contrast characteristics that match the previously selected gamma characteristics may be selected.

[0179] In response to a user command to select one of a plurality of example images from the contrast setting screen (4300) and then select the next icon (4370), the image quality setting application can complete the determination of the user's contrast preference.

[0180] The image quality setting application can utilize the contrast characteristics corresponding to the selected example image in deriving the user preference setting value.

[0181] Once the user's contrast preference is determined, the image quality setting application can display a image quality setting screen (i.e., low-grayscale setting screen) (4400) for determining the user's low-grayscale preference on the display unit (180) of the video display device (100), as illustrated in FIG. 9.

[0182] The low-grayscale distinction setting screen (4400) can display a plurality of example images (4410 to 4460) in which different low-grayscale distinction characteristics are applied to a template image to which previously selected gamma characteristics and contrast characteristics are cumulatively applied, and in which changes in low-grayscale distinction characteristics (or low-grayscale distinction values) can be visually well expressed. In Fig. 9, six example images (4410 to 4460) are shown as being displayed, but it goes without saying that more or fewer example images can be displayed.

[0183] The low-grayscale distinction characteristic corresponding to each of the plurality of example images (4410 to 4460) can be selected by further considering the display specification information described above. That is, a plurality of representative low-grayscale distinction characteristics are selected within the low-grayscale distinction characteristic range allowed by the image display device (100), and the plurality of representative low-grayscale distinction characteristics are applied to each of the template images, thereby generating a plurality of example images (4410 to 4460).

[0184] In addition, the low-grayscale distinction characteristic corresponding to each of the plurality of example images (4410 to 4460) may be selected by further considering the current ambient light brightness information described above. That is, each of the plurality of representative low-grayscale distinction characteristics selected based on the display specification information may be modified according to the current ambient light brightness information, and the modified plurality of representative low-grayscale distinction characteristics may be applied to each of the template images, thereby generating the plurality of example images (4410 to 4460).

[0185] In addition, the low-grayscale distinction characteristic corresponding to each of the plurality of example images (4410 to 4460) may be selected by further considering the previously selected gamma characteristic and contrast characteristic. In other words, the low-grayscale distinction characteristic may be selected as one that matches the previously selected gamma characteristic and contrast characteristic.

[0186] In response to a user command to select one of multiple example images from the low-level distinction setting screen (4400) and then select the next icon (4470), the image quality setting application can complete the identification of the user's low-level distinction preference.

[0187] The image quality setting application can utilize the low-grayscale characteristics corresponding to the selected example image in deriving the user preference setting value.

[0188] Once the user's low-grayscale preference is determined, the image quality setting application can display a image quality setting screen (i.e., color temperature setting screen) (4500) for determining the user's color temperature preference on the display unit (180) of the video display device (100), as illustrated in FIG. 10.

[0189] The color temperature setting screen (4500) can display a plurality of example images (4510 to 4560) in which different color temperature characteristics are applied to a template image to which previously selected gamma characteristics, contrast characteristics, and low-gradation characteristics are cumulatively applied, and in which changes in color temperature characteristics (or color temperature values) can be visually well expressed. In Fig. 10, six example images (4510 to 4560) are shown as being displayed, but it is to be understood that more or fewer example images can be displayed.

[0190] The color temperature characteristics corresponding to each of the plurality of example images (4510 to 4560) can be selected by further considering the display specification information described above. That is, a plurality of representative color temperature characteristics are selected within the color temperature characteristic range allowed by the image display device (100), and a plurality of representative color temperature characteristics are applied to each of the template images, thereby generating a plurality of example images (4510 to 4560).

[0191] In addition, the color temperature characteristic corresponding to each of the plurality of example images (4510 to 4560) may be selected by further considering the current ambient light brightness information described above. That is, each of the plurality of representative color temperature characteristics selected based on the display specification information may be modified according to the current ambient light brightness information, and the modified plurality of representative color temperature characteristics may be applied to each of the template images, thereby generating the plurality of example images (4510 to 4560).

[0192] In addition, the color temperature characteristics corresponding to each of the plurality of example images (4510 to 4560) may be selected by further considering the previously selected gamma characteristics, contrast characteristics, and low-gradation characteristics. That is, the color temperature characteristics may be selected as those that match the previously selected gamma characteristics, contrast characteristics, and low-gradation characteristics.

[0193] In response to a user command to select one of a plurality of example images from the color temperature setting screen (4500) and then select the next icon (4570), the image quality setting application can complete the identification of the user's color temperature preference.

[0194] The image quality setting application can use the color temperature characteristics corresponding to the selected example image in deriving the user preference setting value.

[0195] Once the user's color temperature preference is determined, the image quality setting application can display a image quality setting screen (i.e., color saturation setting screen) (4600) for determining the user's color saturation preference on the display unit (180) of the video display device (100), as illustrated in FIG. 11.

[0196] The color density setting screen (4600) can display a plurality of example images (4610 to 4660) in which different color density characteristics are applied to a template image to which previously selected gamma characteristics, contrast characteristics, low-grayscale characteristics, and color temperature characteristics are cumulatively applied, and in which changes in color density characteristics (or color density values) can be visually well expressed. In Fig. 11, six example images (4610 to 4660) are shown as being displayed, but it goes without saying that more or fewer example images can be displayed.

[0197] The color density characteristics corresponding to each of the plurality of example images (4610 to 4660) can be selected by further considering the display specification information described above. That is, a plurality of representative color density characteristics are selected within the color density characteristic range allowed by the image display device (100), and a plurality of representative color density characteristics are applied to each of the template images, thereby generating a plurality of example images (4610 to 4660).

[0198] In addition, the color density characteristics corresponding to each of the plurality of example images (4610 to 4660) may be selected by further considering the current ambient light brightness information described above. That is, each of the plurality of representative color density characteristics selected based on the display specification information may be modified according to the current ambient light brightness information, and the modified plurality of representative color density characteristics may be applied to each of the template images, thereby generating the plurality of example images (4610 to 4660).

[0199] In addition, the color density characteristics corresponding to each of the plurality of example images (4610 to 4660) may be selected by further considering the previously selected gamma characteristics, contrast characteristics, low-gradation characteristics, and color temperature characteristics. That is, the color density characteristics may be selected as those that match the previously selected gamma characteristics, contrast characteristics, low-gradation characteristics, and color temperature characteristics.

[0200] In response to a user command to select one of a plurality of example images from the color density setting screen (4600) and then select the next icon (4670), the image quality setting application can complete the identification of the user's color density preference.

[0201] The image quality setting application can use the color density characteristics corresponding to the selected example image in deriving the user preference setting value.

[0202] Once the user's color density preference is determined, the image quality setting application can display a image quality setting screen (i.e., a sharpness setting screen) (4700) for determining the user's sharpness preference on the display unit (180) of the video display device (100), as illustrated in FIG. 12.

[0203] The sharpness setting screen (4700) can display a plurality of example images (4710 to 4760) to which different sharpness characteristics are applied to a template image to which previously selected gamma characteristics, contrast characteristics, low-grayscale characteristics, color temperature characteristics, and color saturation characteristics are cumulatively applied, and in which changes in sharpness characteristics (or sharpness values) can be visually well expressed. In Fig. 12, six example images (4710 to 4760) are shown as being displayed, but it is to be understood that more or fewer example images may be displayed.

[0204] The sharpness characteristics corresponding to each of the plurality of example images (4710 to 4760) can be selected by further considering the display specification information described above. That is, a plurality of representative sharpness characteristics are selected within the sharpness characteristic range allowed by the image display device (100), and the plurality of representative sharpness characteristics are applied to each of the template images, thereby generating a plurality of example images (4710 to 4760).

[0205] In addition, the sharpness characteristic corresponding to each of the plurality of example images (4710 to 4760) may be selected by further considering the current ambient light brightness information described above. That is, each of the plurality of representative sharpness characteristics selected based on the display specification information may be modified according to the current ambient light brightness information, and the modified plurality of representative sharpness characteristics may be applied to each of the template images, thereby generating the plurality of example images (4710 to 4760).

[0206] In addition, the sharpness characteristic corresponding to each of the plurality of example images (4710 to 4760) may be selected by further considering the previously selected gamma characteristic, contrast characteristic, low-grayscale characteristic, color temperature characteristic, and color density characteristic. That is, the sharpness characteristics may be selected as those that match the previously selected gamma characteristic, contrast characteristic, low-grayscale characteristic, color temperature characteristic, and color density characteristic.

[0207] In response to a user command to select one of multiple example images from the sharpness setting screen (4700) and then select the next icon (4770), the image quality setting application can complete the determination of the user's sharpness preference.

[0208] The image quality setting application can use the sharpness characteristics corresponding to the selected example image in deriving the user preference setting value.

[0209] Once the user's clarity preference is determined, the image quality setting application can derive the user's preferred image quality setting value (i.e., the user-customized image quality setting value) based on the user's preferred image quality preference determined through the multiple image quality setting screens described above.

[0210] As illustrated in FIG. 13, the image quality setting application can display an image quality setting screen (i.e., image quality setting result screen) (4800) to confirm whether the user's preferred image quality setting value is applied to the display unit (180) of the video display device (100).

[0211] The image quality setting result screen (4800) can display a template image (4810) to which the user preferred image quality setting values ​​derived above are applied.

[0212] The image quality setting result screen (4800) may display an icon before change (4820) and an icon after change (4820).

[0213] When the icon before change (4820) is selected by the user, a template image before the derived user preferred image quality setting value is applied may be displayed, and when the icon after change (4830) is selected by the user, a template image after the derived user preferred image quality setting value is applied may be displayed. The user may compare these two template images to determine whether to apply the user preferred image quality setting value. Of course, the template image before the derived user preferred image quality setting value is applied and the template image after the derived user preferred image quality setting value is applied may be displayed simultaneously.

[0214] In response to a user command to select the Apply icon (4840) on the screen setting result screen (4800), the picture quality setting application can apply the derived user preferred picture quality setting value to the video display device (100).

[0215] The image quality setting application can store the derived user preferred image quality setting value in the storage unit (140) of the video display device (100) and / or the storage unit (340) of the external device (300). If ambient light brightness information and / or display specification information are taken into consideration when the user preferred image quality setting value is derived, the user preferred image quality setting value can be stored together with the ambient light brightness information and / or display specification information. The ambient light brightness information and display specification information stored together with the user preferred image quality setting value will be referred to as reference ambient light brightness information and reference display specification information, respectively.

[0216] One of the template images mentioned in FIGS. 7 to 13 may be the same as at least one of the remaining template images, or they may all be different from each other.

[0217] The utilization of the above-mentioned stored user preferred image quality settings will be further described with reference to FIG. 14. FIG. 14 illustrates an exemplary screen for a user to set the display image quality in a video display device according to one aspect of the present disclosure.

[0218] As illustrated in (14-1) of FIG. 14, a picture quality setting screen (5000) may be displayed on a video display device. The picture quality setting screen (5000) may be displayed in response to a user command for setting display picture quality input to the video display device (100). The picture quality setting screen (5000) may be displayed in full screen or partial screen form in an OSD (On Screen Display) manner on the display unit (180).

[0219] The image quality setting screen (5000) of (14-1) of Fig. 14 can be displayed according to a user command regardless of the execution of the image quality setting application described above, and can be distinguished from the image quality setting screens of Figs. 6 to 13 that are displayed when the image quality setting application is executed.

[0220] The image quality setting screen (5000) can display multiple menus, of which we will look at the image mode menu (5100).

[0221] When the image mode menu (5100) is selected by the user in the image quality setting screen (5000) of (14-1) of FIG. 14, multiple image quality modes (5110, 5120, 5130, 5140, 5150) can be displayed in the image quality setting screen (5000) as shown in (14-2) of FIG. 14.

[0222] The above multiple image quality modes (5110, 5120, 5130, 5140, 5150) may include an image quality mode (5120) according to the stored user line drawing image quality setting value.

[0223] When the image quality mode (5120) according to the saved user line drawing image quality setting value is selected in the image quality setting screen (5000), the control unit (170) of the video display device (1000) can apply the saved user line drawing image quality setting value.

[0224] Accordingly, the user can apply the stored user preferred image quality settings to the video display device (1000) without running the image quality setting application.

[0225] Hereinafter, the application of the user preferred image quality settings described above will be further described with reference to FIG. 15. FIG. 15 is a flowchart illustrating the application of the user preferred image quality settings in a video display device according to one aspect of the present disclosure.

[0226] The control unit (170) of the video display device (100) can read the stored user preferred picture quality setting value and the reference ambient light brightness information stored therewith [S15010].

[0227] The control unit (170) of the video display device (100) can detect the current ambient light brightness through the ambient light sensor (153) [S15020].

[0228] The control unit (170) of the video display device (100) can compare the current ambient light brightness with the reference ambient light brightness information and correct the user preferred picture quality setting value based on the comparison result [S15030].

[0229] For example, if the current ambient light brightness is brighter than the reference ambient light brightness, the user preferred image quality setting value may be corrected so that the image is displayed brighter and in darker colors on the image display device (100). Alternatively, if the current ambient light brightness is darker than the reference ambient light brightness, the user preferred image quality setting value may be corrected so that the image is displayed darker and in lighter colors on the image display device (100).

[0230] The control unit (170) of the video display device (100) can apply the above-mentioned corrected user preferred image quality setting value [S15040].

[0231] The video display device (100) can be used by multiple users, and each user may have different preferred image quality. Referring to FIG. 16, a description will be given of how to set different display image quality settings for each user on the video display device. FIG. 16 illustrates a flowchart for setting the display image quality of the video display device according to one aspect of the present disclosure.

[0232] First, a picture quality setting application according to the present disclosure can be executed [S16010].

[0233] The image quality setting application can identify the current user [S16020]. The image quality setting application can identify the current user by recognizing the user's face captured by the camera (155). Alternatively, the image quality setting application can initiate the image quality setting process described above through login, and identify the current user using login information for each user.

[0234] The image quality setting application can perform the image quality setting process described above for each user [S16030].

[0235] The picture quality setting application can save preferred picture quality settings for each user [S16040].

[0236] After storing the preferred image quality settings for each user, the control unit (180) of the video display device (100) can recognize the user's face captured through the camera (155) or identify the current user using login information entered into the image quality setting application, and read and apply the preferred image quality settings corresponding to the identified user [S16050].

[0237] Preferred picture quality settings derived and stored for one video display device can be shared with other video display devices. This will be further described with reference to FIG. 17. FIG. 17 illustrates a video display device and an external device according to one aspect of the present disclosure.

[0238] Preferred image quality settings for the first image display device (100A) according to the present invention may be uploaded to a cloud server (400). The preferred image quality settings may also be uploaded together with the corresponding standard display specification information.

[0239] A first external device (300A) connected to a first video display device (100A) can connect to a cloud server (400) and upload preferred image quality settings to the cloud server (400). Alternatively, the first video display device (100A) can directly connect to a cloud server (400) and upload preferred image quality settings to the cloud server (400).

[0240] The preferred image quality settings uploaded to the cloud server (400) can be downloaded for the second image display device (100B) according to the present invention. The preferred image quality settings may also be downloaded together with the corresponding reference display specification information.

[0241] A second external device (300B) connected to a second video display device (100B) can connect to a cloud server (400) and download preferred image quality settings to the second external device (300B) and / or the second video display device (100B). Alternatively, the second video display device (100B) can directly connect to a cloud server (400) and download preferred image quality settings to the second external device (300B) and / or the second video display device (100B).

[0242] The utilization of the preferred image quality settings downloaded for the second image display device (100B) will be further described with reference to FIG. 18. FIG. 18 is a flowchart illustrating the application of user preferred image quality settings in the image display device according to one aspect of the present disclosure.

[0243] The control unit (170) of the second video display device (100B) can read the downloaded user preferred picture quality setting value and the standard display specification information downloaded together with it [S18010].

[0244] The control unit (170) of the second video display device (100B) can determine its own display specification information [S18020].

[0245] The control unit (170) of the second video display device (100B) can compare its display specification information with the reference display specification information and correct the user preferred picture quality setting value based on the comparison result [S18030].

[0246] For example, if the maximum output brightness according to the user's display specification information is lower than the maximum output brightness according to the reference display specification information, the user's preferred picture quality setting value may be corrected to adjust the gamma characteristics and / or contrast characteristics to prevent brightness saturation from occurring.

[0247] The control unit (170) of the second video display device (100B) can apply the above-mentioned corrected user preferred image quality setting value [S18040].

[0248] It goes without saying that the control unit (170) of the second video display device (100B) can correct the user preferred picture quality setting value by taking into account not only the standard display specification information but also the standard ambient light brightness information described in FIG. 15.

[0249] Meanwhile, the image quality setting application can analyze the user's preferred image quality tendencies corresponding to the user preferred image quality settings derived from the image quality setting screen (4800) of FIG. 13 and display guidance text (4850) based on the analysis results. The analysis of the user's preferred image quality tendencies will be further described with reference to FIG. 19. FIG. 19 illustrates an example of analysis of user preferred image quality tendencies according to one aspect of the present disclosure.

[0250] The image quality setting application, as illustrated in (19-1) of Fig. 19, can determine the priority of each image quality component for analyzing the user's preferred image quality tendency, and analyze the user's preferred image quality tendency based on the user's preferred setting value for each image quality component according to the priority.

[0251] The image quality setting application may store a list of guidance texts for preset user-preferred image quality tendencies, as illustrated in (19-2) of FIG. 19. The image quality setting application may display guidance texts corresponding to user-preferred image quality tendencies from the guidance text list, as illustrated in FIG. 13.

[0252] The present invention described above can be implemented as computer-readable code on a medium recording a program. Computer-readable media include all types of recording devices that store data that can be read by a computer system. Examples of computer-readable media include hard disk drives (HDDs), solid-state disk drives (SSDs), silicon disk drives (SDDs), read-only memory (ROM), random-access memory (RAM), CD-ROMs, magnetic tapes, floppy disks, and optical data storage devices.

Claims

1. Display section; storage; An interface unit for connecting to at least one of an external device and an external server; and Displaying a plurality of first example images in which a plurality of characteristics of the first quality component are each applied to the first template image, Displaying a plurality of second example images in which a plurality of characteristics of the second quality component are each applied to a second template image, A video display device comprising a control unit that derives and stores a user preferred image quality setting value based on a first image quality component characteristic corresponding to a first example image selected by the user from among the plurality of first example images and a second image quality component characteristic corresponding to a second image selected by the user from among the plurality of second example images.

2. In the first paragraph, the control unit, A display device characterized in that, in response to a user selecting a first example image, it controls the display of a plurality of second example images.

3. In paragraph 2, An image display device characterized in that the plurality of second example images have the first image quality component characteristic corresponding to the selected first example image applied.

4. In the third paragraph, the control unit, Displaying multiple third example images in which multiple characteristics of the third quality component are each applied to the third template image, A video display device characterized in that the user preferred image quality setting value is derived further based on the third image quality component characteristic corresponding to the third example image selected by the user from among the plurality of third example images.

5. In the fourth paragraph, the control unit, A display device characterized in that, in response to a user selecting a second example image, it controls the display of the plurality of third example images.

6. In paragraph 5, An image display device characterized in that the plurality of third example images have a first image quality component characteristic corresponding to the selected first example image and a second image quality component characteristic corresponding to the selected second example image applied thereto.

7. In paragraph 1, Further comprising an ambient light sensor, and the control unit, A video display device characterized in that the ambient light brightness at the time of deriving the user preferred picture quality setting value is stored as the reference ambient light brightness of the user preferred picture quality setting value.

8. In paragraph 7, the control unit, A video display device characterized in that the user preferred picture quality setting value is corrected and applied to the display unit based on a comparison between the ambient light brightness currently detected by the ambient light sensor and the reference ambient light brightness.

9. In paragraph 7, the control unit, A video display device characterized in that the display specification information of the display unit is stored as reference display specification information of the user preferred picture quality setting value.

10. In paragraph 9, the control unit, A video display device characterized in that it controls to upload the user preferred picture quality setting value, the reference ambient light brightness, and the reference display specification information to the external server.

11. In paragraph 1, Further including a camera, the control unit, A video display device characterized in that it identifies a user by recognizing the user's face captured by the camera, and derives and stores the user's preferred image quality settings for each user.

12. Display section; storage; An interface unit for connecting to at least one of an external device and an external server; and Download user preferred picture quality settings and reference display specification information from the external server, A video display device comprising a control unit that controls the user preferred picture quality setting value to be corrected and applied to the display unit based on a comparison between the standard display specification information and the specification information of the display unit.

13. In paragraph 12, Further comprising an ambient light sensor, and the control unit, Download the reference ambient light brightness from the above external server, A video display device characterized in that the user preferred picture quality setting value is further corrected and applied to the display unit based on a comparison between the ambient light brightness currently detected by the ambient light sensor and the reference ambient light brightness.

14. A step of displaying a plurality of first example images, each of which has a plurality of characteristics of a first image quality component applied to a first template image; A step of displaying a plurality of second example images in which a plurality of characteristics of a second image quality component are each applied to a second template image; and A method for controlling a video display device, comprising: a step of deriving and storing a user preferred image quality setting value based on a first image quality component characteristic corresponding to a first example image selected by the user from among the plurality of first example images and a second image quality component characteristic corresponding to a second image selected by the user from among the plurality of second example images.

15. In paragraph 14, A method for controlling a video display device, further comprising: a step of storing the ambient light brightness at the time of deriving the user preferred picture quality setting value as the reference ambient light brightness of the user preferred picture quality setting value.

16. In paragraph 15, A method for controlling a video display device, comprising: a step of correcting the user preferred picture quality setting value based on a comparison between the ambient light brightness currently detected by an ambient light sensor and the reference ambient light brightness and applying the same to a display unit of the video display device.

17. In paragraph 15, A method for controlling a video display device, comprising: a step of storing display specification information of a display unit of the video display device as reference display specification information of the user preferred picture quality setting value.

18. In paragraph 17, A method for controlling a video display device, comprising the step of uploading the user preferred picture quality setting value, the reference ambient light brightness, and the reference display specification information to an external server.

19. Steps to connect to an external server; A step of downloading user preferred picture quality settings and reference display specification information from the external server; and A method for controlling a video display device, comprising: a step of correcting the user preferred picture quality setting value and applying it to the display unit based on a comparison between the above-mentioned standard display specification information and the specification information of the display unit.

20. In paragraph 19, a step of downloading the reference ambient light brightness from the external server; and A method for controlling a video display device, comprising: a step of further correcting the user preferred picture quality setting value and applying it to the display unit based on a comparison between the ambient light brightness currently detected by the ambient light sensor and the reference ambient light brightness.

Images