Image display device and control method therefor

Abstract

The present disclosure relates to an image display device enabling a user to easily set the sound quality of the image display device, and a control method therefor, and may provide an image display device comprising: a display; an audio output unit; and a control unit that generates audio samples of a first group and provides same to the user, generates audio samples of a second group and providing same to the user, after at least one audio sample from among the audio samples of the first group is selected by the user, and controls so as to infer a user-customized sound quality setting on the basis of a plurality of audio samples selected by the user from among the audio samples of the first group and the audio samples of the second group.

Description

Image display device and control method thereof

[0001] The present disclosure relates to a video display device and a method for controlling the same, which enables the use of the video display device with further consideration for user convenience.

[0002] A video display device is, for example, a device equipped with the function of receiving and processing broadcast video that a user can view. For instance, a video display device displays on a display the broadcast selected by the user from among the broadcast signals transmitted by a broadcasting station. Currently, there is a global trend of transitioning from analog to digital broadcasting.

[0003] Digital broadcasting refers to broadcasting that transmits digital video and audio signals. Compared to analog broadcasting, digital broadcasting is more resistant to external noise, resulting in less data loss; it is advantageous for error correction; and it provides high resolution and a clear picture. In addition, unlike analog broadcasting, digital broadcasting enables interactive services.

[0004] In order to utilize digital broadcasting containing various content, the performance and functions of video display devices have been improved and diversified. Through the enhanced performance of video display devices, it has become possible not only to simply receive video signals from broadcasting stations to watch broadcasts, but also to perform various functions through the device, such as playing games, listening to music, and internet shopping using various applications.

[0005] The components constituting the sound quality of a video display device (hereinafter referred to as sound quality components) may be various, such as treble, bass, voice, ambience, etc. The video display device may provide a menu that allows the user to set each sound quality component in the sound quality setting menu.

[0006] However, general users often do not know exactly how to configure each sound quality component in the audio quality settings menu of video display devices to achieve the sound quality they desire.

[0007] In addition, users may find it inconvenient to manually enter the video display device's syllable setting menu to adjust each sound quality component.

[0008] The present disclosure is proposed to solve the aforementioned problems and aims to provide a video display device and a control method thereof that allow a user to easily set the sound quality of the video display device.

[0009] According to one aspect of the present disclosure, to achieve the above objectives, a video display device may be provided comprising a display, an audio output unit, and a control unit that generates and provides a first group of audio samples to a user, generates and provides a second group of audio samples to a user after at least one audio sample among the first group of audio samples is selected by the user, and controls the inference of a user-customized sound quality setting based on a plurality of audio samples selected by the user among the first group of audio samples and the second group of audio samples.

[0010] The control unit can control the display to display a first screen for displaying audio samples of a first group, and after at least one audio sample among the audio samples of the first group is selected, the first screen to switch to a second screen for displaying audio samples of a second group.

[0011] The above control unit can control the generation of a first group of audio samples based on the current sound quality setting of the image display device.

[0012] The control unit can generate a second group of audio samples based on at least one audio sample selected by the user among the first group of audio samples.

[0013] The control unit can output an audio sample according to the user-customized sound quality setting through the audio output unit and control the application of the user-customized sound quality setting to the video display device based on the user's command.

[0014] The control unit can control to generate a first group of audio samples to investigate the user's preference for a first sound quality component and a second sound quality component, and to generate a second group of audio samples to investigate the user's preference for a second sound quality component and a third sound quality component.

[0015] The control unit can control to generate a first group of audio samples for coarse tuning to investigate the user's preference for a first sound quality component and a second sound quality component, and to generate a second group of audio samples for fine tuning to investigate the user's preference for a first sound quality component and a second sound quality component.

[0016] The above control unit can control the inference of the user-customized sound quality settings by inputting numerical values ​​and vectors for the plurality of audio samples selected by the user into a pre-trained artificial intelligence model.

[0017] The control unit can control the display of information regarding at least one of the features and frequency characteristics for each of the first group of audio samples or the second group of audio samples when providing the first group of audio samples or the second group of audio samples to the user.

[0018] The control unit above can control the execution of a sound quality setting application to provide audio samples of a first group or audio samples of a second group to the user.

[0019] Additionally, according to one aspect of the present disclosure, a method for controlling a video display device may be provided, comprising the steps of: generating a first group of audio samples and providing them to a user; generating a second group of audio samples and providing them to the user after at least one audio sample among the first group of audio samples has been selected by the user; and inferring a user-customized sound quality setting based on a plurality of audio samples selected by the user among the first group of audio samples and the second group of audio samples.

[0020] The effects of the image display device and the control method according to the present disclosure are described as follows.

[0021] According to at least one of the embodiments of the present disclosure, there is an advantage that a user can quickly and easily perform sound quality settings in a desired direction on a video display device by selecting at least one sample desired from among several audio samples that can be output through a sound quality setting menu.

[0022] Further scopes of the applicability of the present disclosure will become apparent from the following detailed description. However, since various changes and modifications within the spirit and scope of the present disclosure are clearly understood by those skilled in the art, specific embodiments, such as the detailed description and preferred embodiments of the present disclosure, should be understood as being given merely as examples.

[0023] FIG. 1 is a schematic block diagram of an image display device according to one aspect of the present disclosure.

[0024] FIG. 2 is a drawing illustrating a control method of a remote control device for controlling an image display device according to one aspect of the present disclosure.

[0025] FIG. 3 is a block diagram of a remote control device for controlling an image display device according to one aspect of the present disclosure.

[0026] FIGS. 4 to 6 are execution screens of a sound quality setting application in a video display device according to one aspect of the present disclosure.

[0027] FIG. 7 is a frequency graph for explaining sound quality components that can be considered in an image display device according to one aspect of the present disclosure.

[0028] FIG. 8 is an example of a sound quality component to be investigated in each sound quality preference investigation step of a video display device according to one aspect of the present disclosure.

[0029] FIGS. 9 to 11 are examples of the generation of audio samples that may be provided in each sound quality preference survey step in an image display device according to one aspect of the present disclosure.

[0030] FIG. 12 is an exemplary conceptual diagram of a sound quality setting process in a video display device according to one aspect of the present disclosure.

[0031] FIG. 13 is a flowchart of a sound quality setting process in a video display device according to one aspect of the present disclosure.

[0032] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components, regardless of drawing symbols, are assigned the same reference number, and redundant descriptions thereof will be omitted. The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably solely for the ease of drafting the specification and do not inherently possess distinct meanings or roles. Furthermore, in describing embodiments disclosed in this specification, if it is determined that a detailed description of related prior art could obscure the essence of the embodiments disclosed in this specification, such detailed description will be omitted. Additionally, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification; the technical concept disclosed in this specification is not limited by the attached drawings, and it should be understood that they include all modifications, equivalents, and substitutions that fall within the concept and technical scope of this disclosure.

[0033] The suffixes "module" and "part" for components used in the following description are assigned merely for the ease of drafting this specification, and the terms "module" and "part" may be used interchangeably.

[0034] Furthermore, these components may each be composed of separate individual hardware modules or implemented as two or more hardware modules, or two or more components may be implemented as a single hardware module, and, of course, may also be implemented in software depending on the case.

[0035] Meanwhile, the video display device described in this specification is, for example, an intelligent video display device that adds computer support functions to broadcast reception functions. While faithful to broadcast reception functions, it also includes internet functions, and can be equipped with interfaces that are more convenient to use, such as a handwriting input device, a touch screen, or a spatial remote control. Furthermore, by supporting wired or wireless internet functions, it can be connected to the internet and computers, and can perform functions such as email, web browsing, banking, or games. A standardized general-purpose OS may be used for these various functions.

[0036] Accordingly, the image display device described in this disclosure allows various applications to be freely added or removed, for example, on a general-purpose OS kernel, thereby enabling various user-friendly functions to be performed. More specifically, the image display device may be, for example, a network TV, HBB TV, a smart TV, etc., and may also be applicable to a smartphone depending on the circumstances.

[0037] Furthermore, embodiments of the present disclosure are described in detail below with reference to the attached drawings and the contents described therein, but the present disclosure is not limited or restricted by the embodiments.

[0038] The terms used in this specification have been selected to be as widely used and general as possible, taking into account their functions in this disclosure; however, these may vary depending on the intent or convention of those skilled in the art or the emergence of new technologies. In addition, in specific cases, terms have been arbitrarily selected by the applicant, and in such cases, their meanings will be described in the relevant explanatory section of the disclosure. Therefore, it should be noted that the terms used in this specification should be interpreted based on their actual meaning and the overall content of this specification, rather than merely their names.

[0039] FIG. 1 is a schematic block diagram of an image display device according to one aspect of the present disclosure.

[0040] Referring to FIG. 1, an image 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 shooting unit (not shown). The broadcast receiving unit (105) and the external device interface unit (135) may be collectively referred to as a communication unit.

[0041] The broadcast receiver (105) may include a tuner (110), a demodulator (120), and a network interface (130). Of course, if necessary, it is possible to design it to include the tuner (110) and the demodulator (120) but not include the network interface (130), and conversely, it is also possible to design it to include the network interface (130) but not include the tuner (110) and the demodulator (120).

[0042] The tuner (110) selects an RF (Radio Frequency) broadcast signal corresponding to a channel selected by the user or a pre-stored channel among the RF broadcast signals received through the antenna. Additionally, it converts the selected RF broadcast signal into an intermediate frequency signal or a baseband video or audio signal.

[0043] 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).

[0044] Additionally, the tuner (110) can receive a single-carrier RF broadcast signal according to the ATSC (Advanced Television System Committee) method or a multiple-carrier RF broadcast signal according to the DVB (Digital Video Broadcasting) method.

[0045] Meanwhile, the tuner (110) can sequentially select RF broadcast signals of all broadcast channels stored through the channel memory function among the RF broadcast signals received through the antenna and convert them into intermediate frequency signals or baseband video or audio signals.

[0046] The demodulator (120) receives the digital IF signal (DIF) converted by the tuner (110) and performs a demodulation operation.

[0047] For example, if the digital IF signal output from the tuner (110) is in the ATSC format, the demodulator (120) performs, for example, 8-VSB (8-Vestigal Side Band) demodulation. Additionally, the demodulator (120) may perform channel decoding. To this end, the demodulator (120) may be equipped with a trellis decoder, a de-interleaver, and a Reed Solomon decoder, etc., to perform trellis decoding, de-interleaving, and Reed Solomon decoding.

[0048] For example, if the digital IF signal output from the tuner (110) is in the DVB format, the demodulator (120) performs, for example, COFDMA (Coded Orthogonal Frequency Division Modulation) demodulation. Additionally, the demodulator (120) may perform channel decoding. To this end, the demodulator (120) may be equipped with a convolution decoder, a deinterleaver, and a Reed-Soloman decoder to perform convolution decoding, deinterleaving, and Reed-Soloman decoding.

[0049] The demodulation unit (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 of the MPEG-2 standard, an audio signal of the Dolby AC-3 standard, etc. are multiplexed. Specifically, the MPEG-2 TS may include a 4-byte header and a 184-byte payload.

[0050] Meanwhile, the demodulation unit (120) described above can be provided separately according to the ATSC method and the DVB method, respectively. That is, it can be provided as an ATSC demodulation unit and a DVB demodulation unit.

[0051] The stream signal output from the demodulation unit (120) can be input to the control unit (170). After the control unit (170) performs demultiplexing, video / audio signal processing, etc., it outputs video to the display unit (180) and outputs audio to the audio output unit (185).

[0052] 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).

[0053] The external device interface unit (135) can be connected via wired or wireless connection to external devices such as a DVD (Digital Versatile Disk), Blu-ray, game console, camera, camcorder, computer (laptop), etc. The external device interface unit (135) transmits video, audio, or data signals input from the outside through the connected external device to the control unit (170) of the video display device (100). Additionally, the video, audio, or data signals processed by the control unit (170) can be output to the connected external device. 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).

[0054] 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 into a video display device (100).

[0055] The wireless communication unit can perform short-range wireless communication with other electronic devices. The video display device (100) can be network-connected with other electronic devices according to communication standards such as Bluetooth, RFID (Radio Frequency Identification), infrared communication (IrDA, infrared Data Association), UWB (Ultra Wideband), ZigBee, and DLNA (Digital Living Network Alliance).

[0056] Additionally, the external device interface section (135) may be connected to various set-top boxes through at least one of the various terminals described above, and may perform input / output operations with the set-top boxes.

[0057] Meanwhile, the external device interface unit (135) can receive an application or an application list within an adjacent external device and transmit it to the control unit (170) or storage unit (140).

[0058] The network interface section (130) provides an interface for connecting the video display device (100) to a wired / wireless network including the Internet network. The network interface section (130) may be equipped with, for example, an Ethernet terminal for connection to a wired network, and for connection to a wireless network, communication standards such as WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), and HSDPA (High Speed ​​Downlink Packet Access) may be used.

[0059] The network interface unit (130) can transmit or receive data with other users or other electronic devices through a 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 selected electronic device among other users or other electronic devices that are pre-registered in the video display device (100).

[0060] Meanwhile, the network interface unit (130) can access a specific web page through a connected network or another network linked to the connected network. That is, it can access a specific web page through a 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 related information provided by a content provider or network provider through a network. It can also receive firmware update information and update files provided by a network operator. Furthermore, it can transmit data to the Internet or to a content provider or network operator.

[0061] Additionally, the network interface unit (130) can select and receive a desired application among the applications that are open to the public through the network.

[0062] According to an embodiment, when a game application is executed on a video display device, the network interface unit (130) can transmit or receive certain data with a user terminal connected to the video display device via a network. Additionally, it can transmit or receive certain data with a server that stores game scores.

[0063] The storage unit (140) may store a program for each signal processing and control within the control unit (170), and may also store a signal-processed image, voice, or data signal.

[0064] Additionally, the storage unit (140) may perform the function of temporarily storing video, audio, or data signals input from the external device interface unit (135) or the network interface unit (130). Additionally, the storage unit (140) may store information regarding a predetermined broadcast channel through a channel memory function.

[0065] Additionally, the storage unit (140) can store an application or an application list input from the external device interface unit (135) or the network interface unit (130).

[0066] Additionally, according to an embodiment, the storage unit (140) can store unique information of a user terminal used as a game controller and game play information when providing a game application on a video display device.

[0067] The storage unit (140) may include at least one type of storage medium among, for example, a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory, etc.), RAM, and ROM (EEPROM, etc.). 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.

[0068] FIG. 1 illustrates an embodiment in which the storage unit (140) is provided separately from the control unit (170), but the scope of the present disclosure is not limited thereto. The storage unit (140) may be included within the control unit (170).

[0069] 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.

[0070] For example, the user input interface unit (150) can 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 process to transmit control signals from the control unit (170) to the remote control device (200).

[0071] Additionally, for example, the user input interface unit (150) can transmit control signals input from local keys (not shown), such as a power key, channel key, volume key, and setting value, to the control unit (170).

[0072] Additionally, 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 a 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.

[0073] The control unit (170) can demultiplex the input stream through the tuner (110), the demodulator (120), or the external device interface unit (135), or process the demultiplexed signals to generate and output a signal for video or audio output.

[0074] The image signal processed by the control unit (170) is input to the display unit (180) and can be displayed as an image corresponding to the image signal. Additionally, the image signal processed by the control unit (170) can be input to an external output device through the external device interface unit (135).

[0075] The voice signal processed by the control unit (170) can be output as audio to the audio output unit (185). Additionally, the voice signal processed by the control unit (170) can be input to an external output device through the external device interface unit (135).

[0076] Although not illustrated in FIG. 1, the control unit (170) may include a demultiplexer, an image processing unit, etc.

[0077] 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 (Tuning) an RF broadcast corresponding to a channel selected by the user or a pre-stored channel.

[0078] Additionally, the control unit (170) can control the image display device (100) by means of user commands or internal programs input through the user input interface unit (150). In particular, it can connect to a network to enable the user to download an application or a list of applications desired by the user into the image display device (100).

[0079] For example, the control unit (170) controls the tuner (110) so that a signal of the selected channel is input according to a predetermined channel selection command received through the user input interface unit (150). Then, it processes the video, audio, or data signal of the selected channel. The control unit (170) enables the channel information selected by the user, etc., to be output through the display unit (180) or audio output unit (185) together with the processed video or audio signal.

[0080] In another example, the control unit (170) enables a video signal or audio signal from an external device, such as a camera or camcorder, which is input through the external device interface unit (135), to be output through the display unit (180) or audio output unit (185) in accordance with an external device video playback command received through the user input interface unit (150).

[0081] Meanwhile, the control unit (170) can control the display unit (180) to display an image. For example, it 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) may be a still image or a video, and may be a 2D image or a 3D image.

[0082] Additionally, the control unit (170) can control the playback of content. The content may be content stored in the video display device (100), received broadcast content, or external input content input from the outside. The content may be at least one of broadcast video, external input video, audio file, still image, connected web screen, and document file.

[0083] Meanwhile, in relation to an embodiment of the present disclosure, the control unit (170) can control the display unit (180) to display the home screen in accordance with the input to move to the home screen.

[0084] The home screen may be provided with 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 a 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. Additionally, it 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.

[0085] In addition, the home screen may further include an application menu having at least one executable application item.

[0086] Meanwhile, the control unit (170) can control the card object to be moved and displayed when there is a card object movement input, or to move and display a card object that is not displayed on the display unit (180) on the display unit (180).

[0087] Meanwhile, the control unit (170) can control the display unit (180) to display an image corresponding to the card object when a predetermined card object is selected among a plurality of card objects in the home screen.

[0088] Meanwhile, the control unit (170) can control the display of a received broadcast video and an object representing information related to the broadcast video within a card object that displays the broadcast video. Additionally, the size of the broadcast video can be controlled to be fixed by a lock setting.

[0089] Meanwhile, the control unit (170) can control the display of a setup object for at least one of the following settings within the video display device: video settings, audio settings, screen settings, reservation settings, pointer settings of the remote control device, and network settings within the home screen.

[0090] Meanwhile, the control unit (170) may also control the display of objects for login, help, or exit items in one area of ​​the home screen.

[0091] Meanwhile, the control unit (170) can control the display of an object in one area of ​​the home screen that indicates the total number of card objects or the number of card objects displayed on the display unit (180) among the total card objects.

[0092] Meanwhile, the control unit (170) can control the display unit (180) to display the card object in full screen when a card object name within a predetermined card object among the card objects displayed on the display unit (180) is selected.

[0093] Meanwhile, when an incoming call is received within a connected external device or video display device, the control unit (170) can control the call-related card object among a plurality of card objects to be focused and displayed, or to be moved into the display unit (180) to be displayed.

[0094] Meanwhile, the control unit (170) can control the display of an application or a list of applications that can be downloaded from within the video display device (100) or from an external network when entering the application view item.

[0095] The control unit (170) can control the installation and execution of applications downloaded from an external network, along with various user interfaces. Additionally, it can control the display unit (180) to display images related to the application being executed, based on the user's selection.

[0096] Meanwhile, although not shown in the drawing, it is also possible to further provide a channel browsing processing unit that generates a thumbnail image corresponding to a channel signal or an external input signal.

[0097] The channel browsing processing unit receives a stream signal (TS) output from the demodulation unit (120) or a stream signal output from the external device interface unit (135), and can generate a thumbnail image by extracting an image from the input stream signal. The generated thumbnail image can be input to the control unit (170) as is or encoded. Additionally, the generated thumbnail image can be encoded in a stream form and input to the control unit (170). The control unit (170) can display a thumbnail list containing multiple thumbnail images on the display unit (180) using the input thumbnail image. Meanwhile, the thumbnail images in this thumbnail list can be updated sequentially or simultaneously. Accordingly, the user can easily understand the content of multiple broadcast channels.

[0098] The display unit (180) converts the video signal, data signal, OSD signal processed by the control unit (170) or the video signal, data signal, etc. received from the external device interface unit (135) into R, G, and B signals, respectively, to generate a driving signal.

[0099] The display unit (180) can be a PDP, LCD, OLED, flexible display, 3D display, etc.

[0100] 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.

[0101] The audio output unit (185) receives a voice-processed signal from the control unit (170), for example, a stereo signal, a 3.1 channel signal, or a 5.1 channel signal, and outputs it as voice. The voice output unit (185) can be implemented as a speaker of various types.

[0102] Meanwhile, to detect a user's gesture, a sensing unit (not shown) having at least one of a touch sensor, a voice sensor, a position sensor, and a motion sensor may be further provided in the image display device (100) as described above. A signal detected by the sensing unit (not shown) may be transmitted to a control unit (170) through a user input interface unit (150).

[0103] Meanwhile, a shooting unit (not shown) for shooting the user may be further provided. The video information captured by the shooting unit (not shown) may be input to the control unit (170).

[0104] The control unit (170) may detect a user's gesture by each or in combination with an image captured from a shooting unit (not shown) or a signal detected from a sensing unit (not shown).

[0105] The power supply unit (190) supplies the corresponding power throughout the image display device (100).

[0106] 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.

[0107] To this end, 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 having a plurality of backlight lamps, an inverter (not shown) capable of PWM operation may be further equipped for brightness variation or dimming driving.

[0108] The remote control device (200) transmits user input to the user input interface unit (150). To do this, the remote control device (200) may use Bluetooth, RF (Radio Frequency) communication, infrared (IR) communication, UWB (Ultra Wideband), ZigBee, etc.

[0109] Additionally, the remote control device (200) can receive video, audio, or data signals, etc., output from the user input interface unit (150), and display them on the remote control device (200) or output audio or vibration.

[0110] The above-described video display device (100) may be a fixed type digital broadcast receiver capable of receiving at least one of the following: digital broadcast of the ATSC method (8-VSB method), digital broadcast of the DVB-T method (COFDM method), digital broadcast of the ISDB-T method (BST-OFDM method).

[0111] Meanwhile, the block diagram of the image display device (100) illustrated in FIG. 1 is a block diagram for one aspect of the present disclosure. Each component of the block diagram may be integrated, added, or omitted according to the specifications of the image display device (100) actually implemented. That is, as necessary, two or more components may be combined into one component, or one component may be subdivided into two or more components. Furthermore, the functions performed in each block are intended to explain embodiments of the present disclosure, and the specific operations or devices thereof do not limit the scope of the rights of the present disclosure.

[0112] Meanwhile, unlike as shown in FIG. 1, the video display device (100) may not have the tuner (110) and demodulator (120) shown in FIG. 1, and may receive video content and play it through a network interface unit (130) or an external device interface unit (135).

[0113] Functions related to artificial intelligence according to the present disclosure may be operated through a control unit and memory. The control unit may include one or more processors. In this case, the one or more processors may be general-purpose processors such as CPUs, APs, and DSPs (Digital Signal Processors), graphics-dedicated processors such as GPUs and VPUs (Vision Processing Units), or artificial intelligence-dedicated processors such as NPUs. The one or more processors may be controlled to process input data according to predefined operation rules or artificial intelligence models stored in memory. Alternatively, if the one or more processors are artificial intelligence-dedicated processors, the artificial intelligence-dedicated processors may be designed with a hardware structure specialized for processing a specific artificial intelligence model.

[0114] Artificial intelligence refers to the field of researching artificial intelligence or the methodologies to create it, while machine learning refers to the field of researching methodologies to define and solve various problems addressed within the field of artificial intelligence. Machine learning is also defined as an algorithm that improves performance on a task through continuous experience.

[0115] An Artificial Neural Network (ANN) is a model used in machine learning that can refer to any model capable of problem-solving, composed of artificial neurons (nodes) that form a network through the connection of synapses. An artificial neural network can be defined by connection patterns between neurons in different layers, a learning process that updates model parameters, and an activation function that generates output values.

[0116] An artificial neural network may include an input layer, an output layer, and optionally one or more hidden layers. Each layer may include one or more neurons, and the artificial neural network may include synapses connecting the neurons. In an artificial neural network, each neuron may output a function value of an activation function for input signals, weights, and biases input through the synapses.

[0117] Model parameters refer to parameters determined through learning, including synaptic connection weights and neuron biases. Hyperparameters, on the other hand, refer to parameters that must be set prior to training in a machine learning algorithm, including the learning rate, number of iterations, mini-batch size, and initialization function.

[0118] The objective of training an artificial neural network can be viewed as determining model parameters that minimize the loss function. The loss function can be used as an indicator to determine optimal model parameters during the training process of an artificial neural network.

[0119] Machine learning can be classified into supervised learning, unsupervised learning, and reinforcement learning depending on the learning method.

[0120] Supervised learning refers to a method of training an artificial neural network with labels provided for the training data; a label can refer to the correct answer (or result) that the neural network must infer when the training data is input. Unsupervised learning refers to a method of training an artificial neural network without labels provided for the training data. Reinforcement learning refers to a learning method in which an agent defined within an environment is trained to select an action or sequence of actions that maximizes the cumulative reward in each state.

[0121] Machine learning implemented using a Deep Neural Network (DNN) that includes multiple hidden layers among artificial neural networks is also called Deep Learning, and Deep Learning is a part of Machine Learning. Hereinafter, Machine Learning is used in a sense that includes Deep Learning.

[0122] Object detection models using machine learning include the single-stage YOLO (You Only Look Once) model and the two-stage Faster R-CNN (Regions with Convolutional Neural Networks) model.

[0123] The YOLO (You Only Look Once) model is a model that can predict objects present in an image and their locations by looking at the image only once.

[0124] The YOLO (You Only Look Once) model divides the original image into grids of equal size. Then, for each grid, it predicts the number of bounding boxes specified in a predefined form centered on the grid center, and calculates confidence based on this.

[0125] Subsequently, whether the image contains an object or consists solely of a background is included, and a location with high object confidence is selected so that the object category can be identified.

[0126] The Faster R-CNN (Regions with Convolutional Neural Networks) model is a model that can detect objects faster than the RCNN model and the Fast RCNN model.

[0127] This explains the Faster R-CNN (Regions with Convolutional Neural Networks) model in detail.

[0128] First, feature maps are extracted from the image using a Convolutional Neural Network (CNN) model. Based on the extracted feature maps, multiple Regions of Interest (RoIs) are identified. RoI pooling is performed for each region of interest.

[0129] RoI pooling is a process of setting a grid to fit a predetermined size of H x W for a feature map onto which a region of interest is projected, and extracting the largest value for each cell contained in the grid to extract a feature map with a size of H x W.

[0130] A feature vector is extracted from a feature map having size H x W, and identification information of an object can be obtained from the feature vector.

[0131] FIG. 2 is a drawing illustrating a control method of a remote control device for controlling an image display device according to one aspect of the present disclosure.

[0132] As illustrated in FIG. 2(a), a pointer (205) corresponding to the remote control device (200) is displayed on the display unit (180).

[0133] The user can move or rotate the remote control device (200) up and down, left and right (Fig. 2 (b)), and forward and backward (Fig. 2 (c)). The pointer (205) displayed on the display unit (180) of the image display device corresponds to the movement of the remote control device (200). Since the pointer (205) of the remote control device (200) moves and is displayed according to the movement in 3D space as shown in the drawing, it can be named a spatial remote control.

[0134] Figure 2(b) illustrates that when the user moves the remote control device (200) to the left, the pointer (205) displayed on the display unit (180) of the video display device also moves to the left in response.

[0135] Information regarding the movement of the remote control device (200) detected through the sensor of the remote control device (200) is transmitted to a video display device. The video display device can calculate the coordinates of the pointer (205) from the information regarding the movement of the remote control device (200). The video display device can display the pointer (205) to correspond to the calculated coordinates.

[0136] FIG. 2(c) illustrates a case where, while pressing a specific button within the remote control device (200), the user moves the remote control device (200) away from the display unit (180). By doing so, the selected area within the display unit (180) corresponding to the pointer (205) can be zoomed in and enlarged. Conversely, when the user moves the remote control device (200) closer to the display unit (180), the selected area within the display unit (180) corresponding to the pointer (205) can be zoomed out and reduced. Meanwhile, when the remote control device (200) moves away from the display unit (180), the selected area is zoomed out, and when the remote control device (200) moves closer to the display unit (180), the selected area may be zoomed in.

[0137] Meanwhile, when a specific button within the remote control device (200) is pressed, recognition of up-down and left-right movement may be excluded. That is, when the remote control device (200) moves away from or closer to the display unit (180), up-down, left-right movement is not recognized, and only forward-backward movement is recognized. When the specific button within the remote control device (200) is not pressed, only the pointer (205) moves according to the up-down, left-right movement of the remote control device (200).

[0138] Meanwhile, the movement speed or direction of movement of the pointer (205) can correspond to the movement speed or direction of movement of the remote control device (200).

[0139] Meanwhile, the pointer in the present disclosure refers to an object displayed on the display unit (180) in response to the operation of the remote control device (200). Accordingly, the pointer (205) can be an object of various shapes other than the arrow shape shown in the drawing. For example, it may be a concept including a point, a cursor, a prompt, a thick outline, etc. Furthermore, the pointer (205) can be displayed corresponding to either a point on the horizontal axis or a vertical axis on the display unit (180), and it is also possible to display it corresponding to multiple points, such as a line or a surface.

[0140] FIG. 3 is a block diagram of a remote control device for controlling an image display device according to one aspect of the present disclosure.

[0141] Referring to the drawing, the remote control device (200) may include a wireless communication unit (225), a user input unit (235), a sensor unit (240), an output unit (250), a power supply unit (260), a storage unit (270), and a control unit (280).

[0142] The wireless communication unit (225) transmits and receives signals with any one of the image display devices according to the embodiments of the present disclosure described above. Among the image display devices according to the embodiments of the present disclosure, one image display device (100) will be described as an example.

[0143] The remote control device (200) may be equipped with an RF module (221) capable of transmitting and receiving signals to and from the image display device (100) according to RF communication standards. Additionally, the remote control device (200) may be equipped with an IR module (223) capable of transmitting and receiving signals to and from the image display device (100) according to IR communication standards.

[0144] The remote control device (200) can transmit a signal containing information about the movement of the remote control device (200), etc., to the video display device (100) through the RF module (221).

[0145] Additionally, the remote control device (200) can receive a signal transmitted by the video display device (100) through the RF module (221). Additionally, the remote control device (200) can transmit commands regarding power on / off, channel change, volume change, etc. to the video display device (100) through the IR module (223) as needed.

[0146] The user input unit (235) may be composed of a keypad, buttons, a touchpad, or a touch screen. The user can input commands related to the image display device (100) to the remote control device (200) by operating the user input unit (235). If the user input unit (235) is equipped with a hard key button, the user can input commands related to the image display device (100) to the remote control device (200) by pushing the hard key button. If the user input unit (235) is equipped with a touch screen, the user can input commands related to the image display device (100) to the remote control device (200) by touching the soft keys on the touch screen. Additionally, the user input unit (235) may be equipped with various types of input means that the user can operate, such as a scroll key or a jog key.

[0147] The user input unit (235) may include a microphone for receiving audio signals such as user voice. Voice data collected from the user input unit (235) may be analyzed and processed into user control commands.

[0148] The sensor unit (240) may be equipped with a gyroscope sensor (241) or an accelerometer sensor (243).

[0149] The gyro sensor (241) can sense information regarding the movement of the remote control device (200).

[0150] For example, the gyroscope sensor (241) can sense information regarding the operation of the remote control device (200) based on the x, y, and z axes. The accelerometer sensor (243) can sense information regarding the movement speed of the remote control device (200), etc. Meanwhile, a distance measuring sensor may be further provided, thereby allowing the distance to be sensed from the display unit (180).

[0151] The output unit (250) can output a video or audio signal corresponding to the operation of the user input unit (235) or a signal transmitted from the video display device (100). Through the output unit (250), the user can recognize whether the user input unit (235) is operated or whether the video display device (100) is controlled.

[0152] For example, the output unit (250) may be equipped with an LED module (251) that lights up when the user input unit (235) is operated or when a signal is transmitted and received with the video display device (100) through the wireless communication unit (225), a vibration module (253) that generates vibration, a sound output module (255) that outputs sound, or a display module (257) that outputs video.

[0153] The power supply unit (260) supplies power to the remote control device (200). The power supply unit (260) can reduce power waste by stopping the power supply when the remote control device (200) does not move for a predetermined period of time. The power supply unit (260) can resume the power supply when a predetermined key provided in the remote control device (200) is operated.

[0154] The storage unit (270) may store various types of programs, application data, etc., necessary for the control or operation of the remote control device (200). If the remote control device (200) transmits and receives signals wirelessly through the RF module (221) and the image display device (100), the remote control device (200) and the image display device (100) may transmit and receive signals through a predetermined frequency band. The control unit (280) of the remote control device (200) may store and refer to information regarding the frequency band, etc., for wirelessly transmitting and receiving signals with the image display device (100) paired with the remote control device (200) in the storage unit (270).

[0155] The control unit (280) controls all matters related to the control of the remote control device (200). The control unit (280) can transmit a signal corresponding to a predetermined key operation of the user input unit (235) or a signal corresponding to the movement of the remote control device (200) sensed by the sensor unit (240) to the image display device (100) through the wireless communication unit (225).

[0156] Meanwhile, the sensor unit (240) may further include a voice sensor (245) (e.g., a microphone) for receiving the user's voice. The user's voice input through the voice sensor (245) can be transmitted to the image display device (100) through the wireless communication unit (225).

[0157] Hereinafter, a sound quality setting process in a video display device according to one aspect of the present disclosure will be described with reference to FIGS. 4 to 6. FIGS. 4 to 6 are execution screens of a sound quality setting application in a video display device according to one aspect of the present disclosure.

[0158] The control unit (170) of the video display device (100) can respond to the operation of the user input unit (235) of the user's remote control device (200) (or the operation of the user input unit (not shown) of the video display device (100)) to execute a sound quality setting application (or software) stored in the storage unit (140), and, as shown in FIG. 4, display a first execution screen (1100) of the sound quality setting application on the display (180). The sound quality setting application may be installed at the time of factory shipment of the video display device (100), or it may be installed by the user after factory shipment of the video display device (100) by downloading it directly from an external server.

[0159] By selecting the start menu (1110) of the first execution screen (1100), the sound quality setting application executed by the control unit (170) can initiate a process for user-customized sound quality setting.

[0160] The selection of the start menu of the first execution screen (1100) can be performed by the user moving the pointer (205 in FIG. 2) displayed through the remote control device (200) onto the start menu and operating the user input unit (235) of the remote control device (200) (e.g., pressing the confirmation button). This is merely one example, and it goes without saying that the start menu may be selected in other ways.

[0161] In response to the selection of the start menu of the first execution screen (1100), the sound quality setting application executed by the control unit (170) can display the second execution screen (1200) of the sound quality setting application on the display (180), as shown in (5-1) of FIG. 5.

[0162] The second execution screen (1200) is intended to provide a first group of audio samples to determine the user's sound quality preference (or taste).

[0163] In FIG. 5 (5-1), it is illustrated that audio samples 1-1 to 1-6 (1210, 1220, 1230, 1240, 1250, 1260) may be provided as audio samples of the first group through the second execution screen (1200), but it is obvious that fewer or more audio samples may be provided.

[0164] The process for determining a user's sound quality preference can be carried out through multiple steps, and the audio samples of the first group may be for the first step among the multiple steps.

[0165] One of the first to sixth audio samples (1210, 1220, 1230, 1240, 1250, 1260) can be focused by operating a directional key (not shown) of the remote control device (200) or by moving a pointer (205 in FIG. 2) displayed through the remote control device (200) to position it on one of the first to sixth audio samples (1210, 1220, 1230, 1240, 1250, 1260). This is merely one example, and it goes without saying that the audio sample can be focused in other ways.

[0166] The control unit (170) can play a sample audio corresponding to the audio sample focused by the user and output it through the audio output unit (185). Thus, the user can listen to each of the 1-1 to 1-6 audio samples (1210, 1220, 1230, 1240, 1250, 1260).

[0167] The user may select at least one preferred audio sample from the 1-1 to 1-6 audio samples (1210, 1220, 1230, 1240, 1250, 1260). That is, only one audio sample may be selected, or two or more audio samples may be selected. The selection of an audio sample may be performed by moving a pointer (205 in FIG. 2) displayed through the remote control device (200) onto the start menu and operating the user input section (235) of the remote control device (200) (e.g., pressing the confirmation button). This is also the case for selecting other menus described below. Of course, this is merely an example, and the audio sample or menu may be selected in other ways.

[0168] Meanwhile, an exit menu (1271) and a next menu (1272) may be displayed on the second execution screen (1200). When the exit menu (1271) is selected, the control unit (170) may terminate the execution of the sound quality setting application, and when the next menu (1272) is selected, the control unit (170) may control the process to proceed to the next step.

[0169] As described above, the process for determining a user's sound quality preference can be carried out through a plurality of steps (N). As described below, the present disclosure exemplifies that the process consists of six steps (i.e., N=6), but the present disclosure is not limited thereto and may consist of fewer or more steps.

[0170] That is, the sound quality setting application executed by the control unit (170) can display the third execution screen (1300) of the sound quality setting application on the display (180), as shown in (5-2) of FIG. 5.

[0171] The third execution screen (1300) is the M group (1) for identifying the user's sound quality preference. <M≤N)의 오디오 샘플들을 제공하기 위한 것이다.

[0172] As mentioned above, the process for determining the user's sound quality preference can be carried out through multiple steps, and the audio samples of the M group may be for the M step among the multiple steps.

[0173] In FIG. 5 (5-2), it is illustrated that M-1 to M-6 audio samples (1310, 1320, 1330, 1340, 1350, 1360) may be provided as audio samples of the M group through the third execution screen (1300), but it is obvious that fewer or more audio samples may be provided.

[0174] One of the M-1 to M-6 audio samples (1310, 1320, 1330, 1340, 1350, 1360) can be focused by operating the directional keys (not shown) of the remote control device (200) or by moving the pointer (205 in FIG. 2) displayed through the remote control device (200) to position it on one of the M-1 to M-6 audio samples (1310, 1320, 1330, 1340, 1350, 1360). This is merely one example, and of course, the audio sample can be focused in other ways as well.

[0175] The control unit (170) can play a sample audio corresponding to the audio sample focused by the user and output it through the audio output unit (185). Thus, the user can listen to each of the M-1 to M-6 audio samples (1310, 1320, 1330, 1340, 1350, 1360).

[0176] The user may select at least one preferred audio sample from the M-1 to M-6 audio samples (1310, 1320, 1330, 1340, 1350, 1360). That is, only one audio sample may be selected, or two or more audio samples may be selected. The selection of an audio sample may be made by moving a pointer (205 in FIG. 2) displayed through the remote control device (200) onto the start menu and operating the user input section (235) of the remote control device (200) (e.g., pressing a confirmation button).

[0177] Step M can be repeated until all of the multiple steps (N) for determining the user's sound quality preference are completed.

[0178] Meanwhile, the third execution screen (1300) may display an exit menu (1371), a next menu (1372), a previous menu (1373), and a skip menu (1374). The exit menu (1371) and the next menu (1372) are as described above. When the previous menu (1373) is selected, the control unit (170) may return to the previous step of the process, and when the skip menu (1374) is selected, the control unit (170) may control the M step to be omitted.

[0179] When all of the multiple steps (N) for determining the user's sound quality preference are completed, the control unit (170) can display a fourth execution screen (1400) on the display (180) to infer and present the user's customized sound quality settings by analyzing the audio samples selected by the user and inferring the user's sound quality preference.

[0180] The control unit (170) can display the fourth execution screen (1400) and play sample audio corresponding to the user-customized sound quality setting and output it through the audio output unit (185).

[0181] In response to the user selecting the application menu (1472) displayed on the fourth execution screen (1400), the control unit (170) can control the user-customized sound quality setting to be applied to the video display device (100). This can terminate the user-customized sound quality setting process.

[0182] Meanwhile, the exit menu (1471) and previous menu (1473) displayed on the fourth execution screen (1400) are as described above.

[0183] Below, I will explain the generation of audio samples provided in each of the multiple steps (hereinafter referred to as the sound quality preference survey steps) for identifying the user's sound quality preference described above.

[0184] With reference to FIG. 7, I will explain the components constituting the sound quality of a video display device, namely, the sound quality components. FIG. 7 is a frequency graph for explaining sound quality components that can be considered in a video display device according to one aspect of the present disclosure.

[0185] As illustrated in FIG. 7, the audio quality that can be output by the video display device (100) may include a low frequency range (20–400 Hz), a voice range (280 Hz–6.4 kHz), and a high frequency range (3 kHz–20 kHz) when viewed in the frequency domain. Additionally, the voice range may include a voice thickness range (280 Hz–1 kHz) and a voice brightness range (1.4–6.4 kHz).

[0186] Each of these sections can constitute the corresponding sound quality component.

[0187] Therefore, depending on how the frequency characteristics of each section are set, the sound quality of the audio output by the video display device (100) may vary.

[0188] In addition, the audio quality component that the video display device (100) can output may include an ambience component.

[0189] The sound quality components described above are merely examples, and it goes without saying that the sound quality of the audio that the video display device (100) can output may be determined by other sound quality components.

[0190] Each of the sound quality preference survey steps described above can be understood as intended to investigate each of the previously described voice components. However, each sound quality preference survey step may not necessarily require investigating the user's sound quality preference for all voice components at once. Furthermore, each sound quality preference survey step may not necessarily require investigating the user's sound quality preference for only one voice component. However, each sound quality preference survey step may investigate the user's sound quality preference for two or more partial voice components. This will be explained with further reference to FIG. 8. FIG. 8 is an example of a sound quality component to be investigated in each sound quality preference survey step of a video display device according to one aspect of the present disclosure.

[0191] As illustrated in FIG. 8, in the first step, the user's sound quality preference can be investigated for voice, bass, and treble sound quality components. In the first step, coarse tuning for voice, bass, and treble can be performed.

[0192] In the second stage, user sound quality preferences can be investigated for voice, bass, and treble sound quality components. In the second stage, fine tuning for voice, bass, and treble can be performed.

[0193] In the third stage, user sound quality preferences can be investigated regarding sound quality components of sound field, bass, and treble. In the third stage, more detailed fine-tuning of bass and treble can be performed, while coarse tuning of sound field can be performed.

[0194] In the fourth step, user sound quality preferences can be investigated regarding sound field and voice quality components. In the fourth step, fine-tuning of the sound field and voice can be performed.

[0195] In the fifth step, user sound quality preferences can be investigated regarding sound field and voice quality components. In the fifth step, more detailed fine-tuning of the sound field and voice can be performed.

[0196] In Step 6, user sound quality preferences can be investigated regarding low and high sound quality components. In Step 6, even more detailed fine-tuning of the low and high frequencies can be performed.

[0197] Experiments have shown that users' sound quality preferences are accurately investigated when going through these steps. However, it goes without saying that the sound quality components investigated at each stage may change slightly.

[0198] Hereinafter, with reference to FIGS. 9 and FIGS. 10, the generation of audio samples that may be provided in each sound quality preference survey step of FIGS. 8 will be described. FIGS. 9 and FIGS. 10 are examples of the generation of audio samples that may be provided in each sound quality preference survey step in a video display device according to one aspect of the present disclosure.

[0199] As illustrated in FIG. 9, a sound quality setting application executed by the control unit (170) can generate eight audio samples (audio samples A through H) for a first sound quality preference survey step. As previously mentioned, the first sound quality preference survey step is intended to investigate the user's sound quality preference for voice, bass, and treble sound quality components. Accordingly, the sound quality setting application can generate eight audio samples for the first step in which the target sound quality components (voice, bass, and treble) are at least partially different. The eight audio samples can be set based on the current sound quality setting of the video display device (100). Accordingly, depending on how the current sound quality setting is configured, the eight audio samples (audio samples A through H) for the first step can be generated at least partially differently.

[0200] As shown in Fig. 10, each of the eight audio samples may have different features and frequency characteristics.

[0201] The sound quality setting application may provide six sound quality audio samples out of eight sound quality audio samples to the user through the second execution screen (1200). The six sound quality audio samples may correspond to the 1-1 to 1-6 audio samples (1210, 1220, 1230, 1240, 1250, 1260). Of course, fewer or more audio samples than the six sound quality audio samples may be provided through the second execution screen (1200).

[0202] Although not shown, the sound quality setting application may provide six sound quality audio samples to the user through the second execution screen (1200), and may also provide information on at least one of the features and frequency characteristics of each audio sample to help the user make a selection.

[0203] Hereinafter, with reference to FIG. 11, the generation of audio samples that may be provided in each sound quality preference survey step of FIG. 8 will be explained further. FIG. 11 is an example of the generation of audio samples that may be provided in each sound quality preference survey step in a video display device according to one aspect of the present disclosure.

[0204] When an audio sample is selected by the user in the first sound quality preference survey stage, the sound quality setting application can generate eight audio samples for the second sound quality preference survey stage based on the audio sample selected in the first sound quality preference survey stage.

[0205] For example, let us assume that audio sample D is selected from among the multiple audio quality samples shown in (11-1) of FIG. 11.

[0206] Then, the sound quality setting application can generate eight audio samples (DA to DH) for the second sound quality preference survey step based on audio sample D, as illustrated in (11-2) of FIG. 11.

[0207] The sound quality setting application can provide six sound quality audio samples to the user through the third execution screen (1300) out of eight sound quality audio samples (DA to DH) generated based on audio sample D. The six sound quality audio samples may correspond to the 2-1 to 2-6 audio samples (1310, 1320, 1330, 1340, 1350, 1360). Of course, fewer or more audio samples than the six sound quality audio samples may be provided through the third execution screen (1300).

[0208] On the other hand, let us assume that audio sample F is selected from among the multiple audio samples of sound quality shown in (11-1) of Fig. 11.

[0209] Then, the sound quality setting application can generate eight audio samples (FA to FH) for the second sound quality preference survey step based on audio sample F, as illustrated in (11-3) of FIG. 11.

[0210] The sound quality setting application may provide six sound quality audio samples to the user through the third execution screen (1300) out of eight sound quality audio samples (FA to FH) generated based on audio sample F. The six sound quality audio samples may correspond to the 2-1 to 2-6 audio samples (1310, 1320, 1330, 1340, 1350, 1360). Of course, fewer or more audio samples than the six sound quality audio samples may be provided through the third execution screen (1300).

[0211] In other words, depending on what audio sample was selected by the user in the M-1 sound quality preference survey stage, the sound quality audio samples provided to the user in the M sound quality preference survey stage may differ at least partially. By providing some different sound quality audio samples depending on the user, rather than providing the same sound quality audio samples to all users, the sound quality setting application has the advantage of being able to investigate the user's sound quality preferences more closely.

[0212] Although not shown, the sound quality setting application may provide six sound quality audio samples to the user through the third execution screen (1300), and may also provide information on at least one of the features and frequency characteristics of each audio sample to help the user make a selection.

[0213] Hereinafter, with reference to FIGS. 12 and 13, a sound quality setting process in a video display device according to one aspect of the present disclosure will be described. FIG. 12 is an exemplary conceptual diagram of a sound quality setting process in a video display device according to one aspect of the present disclosure. FIG. 13 is a flowchart of a sound quality setting process in a video display device according to one aspect of the present disclosure.

[0214] First, a sound quality setting application that can be executed on a video display device (100) can generate multiple audio samples to investigate the user's sound quality preference [S1310]. The multiple audio samples can be generated differently according to the current sound quality setting of the video display device (100) and / or the user's preference.

[0215] The sound quality setting application can provide the user with a plurality of audio samples generated above [S1320].

[0216] The sound quality setting application can receive at least one user selection among a plurality of audio samples, as illustrated in (12-1) of FIG. 12 [S1330]. The user can select at least one of the plurality of audio samples according to their preference.

[0217] The audio quality setting application can determine whether the user's audio sample selection across multiple steps has been completed [S1340].

[0218] If the user's audio sample selection across all of the multiple steps is not completed, the audio quality setting application may generate multiple audio samples reflecting the user's audio sample selection so far and repeat steps S1320 and S1330 described above [S1350, S1310, S1320, S1330].

[0219] Once the user's selection of audio samples across all multiple steps is complete, the sound quality setting application can analyze the audio samples selected by the user across all multiple steps, as illustrated in (12-2) of FIG. 12 [S1360]. The sound quality setting application can generate numerical values ​​and vectors for each of the audio samples selected by the user.

[0220] As shown in (12-3) of FIG. 12, the sound quality setting application inputs the analysis results of audio samples selected by the user into a pre-trained deep learning network to infer a user-customized sound quality setting, and as shown in (12-4) of FIG. 12, can provide a user-customized sound quality setting for each user [S1370].

[0221] The foregoing disclosure may be implemented as computer-readable code on a medium on which a program is recorded. A computer-readable medium includes all types of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable media include a Hard Disk Drive (HDD), a Solid State Disk (SSD), a Silicon Disk Drive (SSD), ROM, RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc., and also include implementations in the form of a carrier wave (e.g., transmission over the Internet). Additionally, the computer may include a control unit (170) of an image display device and a control unit (280) of a remote control device. Accordingly, the above detailed description should not be interpreted restrictively in all respects and should be considered exemplary. The scope of the disclosure shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the disclosure are included within the scope of the disclosure.

Claims

1. Display; Audio output section; and Generate audio samples of the first group and provide them to the user, and After at least one audio sample from the first group of audio samples is selected by the user, the second group of audio samples is generated and provided to the user, A video display device comprising: a control unit that controls the inference of user-customized sound quality settings based on a plurality of audio samples selected by the user among audio samples of a first group and audio samples of a second group.

2. In claim 1, the control unit is, A first screen for displaying audio samples of a first group is displayed on the display, and A video display device characterized by controlling the first screen to switch to a second screen for displaying audio samples of a second group after at least one audio sample among the first group of audio samples is selected.

3. In claim 1, the control unit is, A video display device characterized by controlling to generate a first group of audio samples based on the current sound quality setting of the video display device.

4. In claim 1, the control unit is, A video display device characterized by generating a second group of audio samples based on at least one audio sample selected by the user among the first group of audio samples.

5. In any one of claims 1 to 4, the control unit is, An audio sample according to the above user-customized sound quality setting is output through the above audio output unit, and A video display device characterized by controlling the application of the user-customized sound quality settings to the video display device based on the user's command.

6. In claim 1, the control unit, Generating a first group of audio samples to investigate the user's preference for a first sound quality component and a second sound quality component, and A video display device characterized by controlling the generation of a second group of audio samples to investigate the user's preference for a second sound quality component and a third sound quality component.

7. In claim 1, the control unit is, Generating a first group of audio samples for rough tuning to investigate the user's preference for a first sound quality component and a second sound quality component, and A video display device characterized by controlling the generation of a second group of audio samples for fine-tuning to investigate the user's preference for a first sound quality component and a second sound quality component.

8. In claim 1, the control unit is, A video display device characterized by controlling the inference of user-customized sound quality settings by inputting numerical values ​​and vectors for a plurality of audio samples selected by the user into a pre-trained artificial intelligence model.

9. In claim 1, the control unit, A video display device characterized by controlling the display of information regarding at least one of the features and frequency characteristics for each of the first group of audio samples or the second group of audio samples together when providing the first group of audio samples or the second group of audio samples to the user.

10. In claim 1, the control unit is, A video display device characterized by controlling the execution of a sound quality setting application to provide audio samples of a first group or audio samples of a second group to the user.

11. A step of generating audio samples of the first group and providing them to the user; A step of generating and providing a second group of audio samples to the user after at least one audio sample among the first group of audio samples has been selected by the user; and A method for controlling a video display device comprising: a step of inferring a user-customized sound quality setting based on a plurality of audio samples selected by the user among audio samples of a first group and audio samples of a second group.

12. In Paragraph 11, A step of displaying a first screen for displaying audio samples of a first group; and A method for controlling an image display device, characterized by including the step of switching a first screen to a second screen for displaying audio samples of a second group after at least one audio sample among the audio samples of a first group has been selected.

13. In Paragraph 11, A method for controlling a video display device, characterized by including the step of generating a first group of audio samples based on the current sound quality setting of the video display device.

14. In Paragraph 11, A method for controlling a video display device, characterized by including the step of generating a second group of audio samples based on at least one audio sample selected by the user among the first group of audio samples.

15. In Paragraph 11, A step of outputting an audio sample according to the above user-customized sound quality settings through an audio output unit; and A method for controlling a video display device characterized by including the step of applying the user-customized sound quality setting to the video display device in response to the user's command.

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