Display device and output method thereof

Abstract

The present display device comprises a memory in which instructions and configuration information related to an image quality are stored, a display, a first input / output interface including a display port, a second input / output interface, and at least one processor, wherein the instructions, when executed by the at least one processor, cause the display device to: transmit configuration information related to an image quality to a source device through the display port; when image data corresponding to the configuration information related to the image quality is received from the source device through the display port, control the display to display an image corresponding to the image data; identify an output abnormality of the display device on the basis of the received image data; update the configuration information related to the image quality on the basis of the identified output abnormality; and transmit the updated configuration information related to the image quality to the source device through the display port, wherein the configuration information related to the image quality includes information on whether another display device is connected to the second input / output interface.

Description

Display device and output method thereof

[0001] The present disclosure relates to a display device that outputs an image based on changed image data and an output method thereof.

[0002] Thanks to advancements in electronic technology, various types of display devices are now used in everyday life. Some of these display devices may be implemented in a form that connects to other display devices.

[0003] In the past, when the display device was set to MST (Multi-Stream Transport) mode and the HDR (High Dynamic Range) function was used, screen abnormalities sometimes appeared due to various reasons such as compatibility.

[0004] Therefore, the need for a solution to the abnormal screen output symptom of the display device has arisen.

[0005] According to at least one embodiment of the present disclosure, a display device includes a memory storing instructions and setting information related to image quality, a display, a first input / output interface including a display port, a second input / output interface, and at least one processor, wherein the instructions, when executed by the at least one processor, cause the display device to transmit the setting information related to image quality to a source device through the display port, and when image data corresponding to the setting information related to image quality is received from the source device through the display port, control the display to display an image corresponding to the image data, identify an output abnormality of the display device based on the received image data, update the setting information related to image quality based on the identified output abnormality, and transmit the updated setting information related to image quality to the source device through the display port, wherein the setting information related to image quality includes information on whether another display device is connected to the second input / output interface.

[0006] The setting information related to the updated image quality may be setting information that causes the source device to transmit the image data when the settings of the image data are changed.

[0007] The instructions, when executed by the at least one processor, may cause the display device to control the display to display an image based on the image data having changed settings according to the updated image quality-related setting information when the display device receives image data from the source device.

[0008] The instructions, when executed by the at least one processor, identify an output abnormality of the display device based on the received image data when the display device simultaneously uses an MST (Multi-Stream Transport) mode and a function for improving the image quality of the display device, and update setting information related to the image quality based on the identified output abnormality, wherein the MST mode is a mode in which a plurality of streams are received from one port of the first input / output interface, each corresponding to a plurality of images, and a first image corresponding to the display device among the plurality of images can be displayed through the display, and a second image corresponding to the other display device can be displayed through the other display device.

[0009] The instructions, when executed by the at least one processor, cause the display device to change the HBR (High Bit Rate) grade information in the image quality-related setting information to a specification lower than the currently set HBR grade, and the HBR may be information that determines the transmission speed of the image data.

[0010] The above instructions, when executed by the at least one processor, may cause the display device to change the DP (DisplayPort) version information in the image quality-related setting information to a lower version than the currently set DP version.

[0011] The instructions, when executed by the at least one processor, cause the display device to change information supporting the MST (Multi-Stream Transport) mode in the setting information related to the image quality into information supporting the SST (Single-Stream Transport) mode, wherein the SST mode may be a mode in which the display device is set to receive one data stream from the source device.

[0012] The instructions, when executed by the at least one processor, may cause the display device to identify an output abnormality of the other display device based on the image data received from the other display device through the second input / output interface, update setting information related to the image quality based on the identified output abnormality, and transmit the setting information related to the updated image quality to the source device through the display port.

[0013] The instructions, when executed by the at least one processor, may cause the display device to update the image quality-related setting information based on information about an output abnormality received from the other display device through the second input / output interface, and to transmit the updated image quality-related setting information to the source device through the display port.

[0014] The instructions, when executed by the at least one processor, may cause the display device to transmit the received image quality-related setting information to the source device through the display port when the display device receives updated image quality-related setting information from the other display device through the second input / output interface.

[0015] The setting information related to the above image quality may include information on at least one of connection with the other display device, resolution, refresh rate, bandwidth, color, MST mode information, HBR specification information, DP version, and HDR (High Dynamic Range).

[0016] The instructions, when executed by the at least one processor, may cause the display device to identify the received image data as an output abnormality of the display device based on the image quality-related setting information if the received image data is outside the specification range supported by the display device.

[0017] According to at least one embodiment of the present disclosure, an output method of a display device includes, when image data is received from a source device, a step of identifying an output abnormality of the display device based on the image data, a step of updating setting information related to image quality based on the identified output abnormality, a step of transmitting the setting information related to the updated image quality to the source device, and a step of displaying an image corresponding to the received image data corresponding to the setting information related to the updated image quality when image data corresponding to the setting information related to the updated image quality is received from the source device, wherein the setting information related to the image quality includes information on whether another display device is connected.

[0018] The setting information related to the updated image quality may be setting information that causes the source device to transmit the image data when the settings of the image data are changed.

[0019] A non-transitory computer-readable recording medium including a program for executing an output method of a display device according to at least one embodiment of the present disclosure, wherein the output method of the display device comprises: when image data is received from a source device, identifying an output abnormality of the display device based on the image data; updating setting information related to image quality based on the identified output abnormality; transmitting the setting information related to the updated image quality to the source device; and when image data corresponding to the setting information related to the updated image quality is received from the source device, displaying an image corresponding to the received image data corresponding to the setting information related to the updated image quality, wherein the setting information related to the image quality includes information on whether another display device is connected.

[0020]

[0021] FIG. 1 is a drawing for explaining the operation of a display device according to at least one embodiment of the present disclosure.

[0022] FIG. 2 is a block diagram illustrating a configuration of a display device according to at least one embodiment of the present disclosure.

[0023] FIG. 3 is a diagram illustrating an example of a display device updating setting information according to at least one embodiment of the present disclosure.

[0024] FIG. 4 is a diagram illustrating an example of a display device updating setting information according to at least one embodiment of the present disclosure.

[0025] FIG. 5 is a diagram illustrating an example of a display device updating setting information according to at least one embodiment of the present disclosure.

[0026] FIG. 6 is a drawing for explaining the MST mode and the SST mode in a display device according to at least one embodiment of the present disclosure.

[0027] FIG. 7 is a block diagram illustrating a configuration of a source device according to at least one embodiment of the present disclosure.

[0028] FIG. 8 is a diagram illustrating an example of a display device updating setting information according to at least one embodiment of the present disclosure.

[0029] FIG. 9 is a sequence diagram illustrating an operation sequence of a display device and a source device according to at least one embodiment of the present disclosure.

[0030] FIG. 10 is a flowchart for explaining an output method of a display device according to at least one embodiment of the present disclosure.

[0031] The terms used in the various embodiments of this disclosure have been selected from widely used, current terms, taking into account the functions of this disclosure. However, these terms may vary depending on the intentions of those skilled in the art, precedents, the emergence of new technologies, etc. Furthermore, in certain cases, terms may be arbitrarily selected by the applicant, and in such cases, their meanings will be described in detail in the description of the relevant disclosure. Therefore, the terms used in this disclosure should be defined based on the meaning of the terms and the overall content of this disclosure, rather than simply their names.

[0032] It should be understood that the various embodiments of the present disclosure and the terminology used therein are not intended to limit the technical features described in the present disclosure to specific embodiments, but include various modifications, equivalents, or substitutes of the embodiments.

[0033] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0034] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0035] In this disclosure, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all a, b, and c.

[0036] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0037] When a component (e.g., a first component) is referred to as being “coupled” or “connected” to another component (e.g., a second component), with or without the terms “functionally” or “communicatively,” it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0038] Terms such as "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the present disclosure, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0039] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0040] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0041] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0042] In the present disclosure, a "module" or "part" performs at least one function or operation and may be implemented in hardware or software, or a combination of hardware and software. Furthermore, multiple "modules" or multiple "parts" may be integrated into at least one module and implemented as at least one processor, excluding any "modules" or "parts" that need to be implemented as specific hardware.

[0043] Meanwhile, the various elements and areas in the drawings are schematically drawn. Therefore, the technical concept of the present invention is not limited by the relative sizes or spacing depicted in the attached drawings.

[0044] In this disclosure, the term user may refer to a person using an electronic device or a device used by the person.

[0045] An embodiment of the present disclosure will be described in more detail with reference to the attached drawings below.

[0046] FIG. 1 is a drawing for explaining the operation of a display device according to at least one embodiment of the present disclosure.

[0047] Referring to FIG. 1, the display system includes a source device (100), a first display device (100), and a second display device (200). As illustrated, each device can be sequentially connected with a DP cable.

[0048] In FIG. 1, the display device (100) is illustrated as a monitor, but the display device (100) may be implemented as various types of display devices such as a TV, a laptop, a monitor, a kiosk, a tablet PC, an electronic picture frame, a mobile phone, a large format display (LFD), a digital signage, a digital information display (DID), a video wall, a projector display, etc. However, the present invention is not limited thereto, and in some cases, the display device (100) may be implemented as various devices such as an image processing device (e.g., a set-top box, one connected box) that is connected to the display device and provides an image.

[0049] In FIG. 1, the other display device (200) may be an independent device provided separately from the display device (100). In FIG. 1, the other display device (200) is illustrated as being a device of the same type as the display device (100), but is not necessarily limited thereto, and may be implemented as a device of different types, and may be implemented in a form in which three or more display devices are connected.

[0050] In addition, for convenience of explanation, the present disclosure describes the other display device (200), but it may alternatively be described as an external display device or a sub-display device.

[0051] Meanwhile, the various embodiments of the present disclosure to be described below are not necessarily only applicable to a state in which multiple display devices (100, 200) are connected to each other as in FIG. 1, and may also be applicable to a case in which a single display device (100) is connected and used alone. For example, even in a case in which an output abnormality occurs on the screen of the display device (100) while the source device (300) and one display device (100) are connected, the source device (300) may update setting information related to image quality so that the display device (100) transmits image data with changed settings.

[0052] According to FIG. 1, the display device (100) can be directly connected to the source device (300). Accordingly, the display device (100) can receive image data from the source device (300), and if an output abnormality of the display device (100) is identified based on the received image data, setting information related to image quality can be updated based on the identification result and transmitted to the source device (300).

[0053] The setting information related to the updated image quality may refer to setting information that allows the source device (300) to transmit image data with changed settings. Specifically, when the setting information related to the updated image quality is transmitted to the source device (300), the image data with changed settings can be received from the source device (300). The display device (100) can output an image based on the image data with changed settings. Meanwhile, although the change of the setting information so that the source device (300) transmits the image data with changed settings is expressed as an update of the setting information, it refers to a case where the setting information is changed to resolve an output abnormality of the display devices (100, 200), and thus it can be expressed in various ways such as reduction of image data, change of setting information, and update of setting information. Specific examples for receiving image data with changed settings will be described in detail with reference to FIGS. 3 to 5.

[0054] Setting information related to image quality refers to setting information that can determine the quality of the image output by the display device (100), and may also be expressed as specification information, standard information, function information, or specification information. Specifically, it may include information on at least one of the resolution, refresh rate, bandwidth, color, MST mode information, HBR specification information, DP version, and HDR (High Dynamic Range) of the display device (100).

[0055] In FIG. 1, the display device (100) can be directly connected to another display device (200). Accordingly, the display device (100) can receive image data from the other display device (200). In this case, the display device (100) and the other display device (200) can be connected to the source device (300) in MST (Multi-Stream Transport) mode. The MST mode refers to a mode in which multiple streams corresponding to each of multiple images are received from a single port.

[0056] When the display device (100) uses the MST (Multi-Stream Transport) mode and the function for improving the image quality of the display device (100) at the same time, the display device (100) can identify an output abnormality of the display device (100) based on the received image data and update information related to the image quality based on the identification result. Specifically, when the MST (Multi-Stream Transport) mode and the function for improving the image quality of the display device (100) are used at the same time, the required bandwidth between the source device (300) and the display devices (100, 200) may increase, thereby increasing the amount of data transmitted. When the amount of data transmitted between the source device (300) and the display devices (100, 200) increases, an output abnormality may appear in the display device (100) or another display device (200).

[0057] When using the MST mode and HDR function with them turned on at the same time, if compatibility issues occur due to an increase in the amount of data transmitted, a blackout phenomenon may occur on the screen (121) of the display device (100) or the screen (221) of another display device (200). For example, if the HDR specification of the display device (100) is a maximum of 10 bits, if the source device (300) transmits data with an abnormal bit exceeding 10 bits, the display device (100) may not receive data within the normal range, resulting in an abnormal output on the screen.

[0058] Features that enhance video quality include, for example, High Dynamic Range (HDR). HDR refers to the ability to expand the contrast ratio and color range to produce vivid and realistic images. However, this is not the only limitation, and various other features that enhance video quality can be included, such as Wide Color Gamut (WCG), High Frame Rate (HFR), and Motion Smoothing (MEMC).

[0059] When an output abnormality occurs on another display device (200), the display device (100) can receive image data from the other display device (200) and identify the output abnormality of the other display device (200) based on the received image data. Then, based on the identification result, setting information related to image quality can be updated and the setting information related to the updated image quality can be transmitted to the source device (300).

[0060] On the other hand, the display device (100) may identify an output abnormality of another display device (200), but the other display device (200) may also identify the output abnormality itself. The display device (100) may receive information about the output abnormality identified by the other display device (200) and update setting information related to image quality. In this case, the display device (100) may also transmit setting information related to the updated image quality to the source device (300).

[0061] In addition, when an output abnormality occurs in another display device (200), the display device (100) may update the setting information related to image quality based on the output abnormality information of the other display device (200), but the other display device (200) may also update the setting information related to image quality on its own. In this case, the display device (100) may receive the setting information related to the updated image quality from the other display device (200) and transmit the received setting information related to the image quality to the source device (300).

[0062] In Fig. 1, a display device (100) is connected to a source device (300) via a wired cable, and another display device (200) is connected to the display device (100) via a wired cable. Although Fig. 1 illustrates a state of connection via a wired cable, the display device (100) and another display device (200) or the source device (300) may also be connected via wireless communication.

[0063] Specifically, each device may be connected through a wide area network (WAN) such as the Internet, a local area network (LAN) formed around an access point (AP), or a short-range wireless network that does not use an access point (AP). Short-range wireless networks may include, but are not limited to, Bluetooth (IEEE 802.15.1), Zigbee (IEEE 802.15.4), Wi-Fi Direct, Near Field Communication (NFC), Z-Wave, etc.

[0064] The display device (100) may store various programs. For example, various programs may be stored, such as applications for identifying output abnormalities and updating image quality-related setting information. The display device (100) may perform various operations as the programs are executed.

[0065] Meanwhile, the above description assumes that multiple display devices are connected in MST mode, but is not limited thereto. That is, the present invention can also be applied to cases where one display device is connected to a source device (300) or multiple display devices are connected in SST mode.

[0066] FIG. 2 is a block diagram illustrating a configuration of a display device according to at least one embodiment of the present disclosure.

[0067] The display device (100) may include a memory (110), a display (120), an input / output interface (130), and a processor (140).

[0068] The memory (110) may store at least one instruction, an operating system (O / S), a program, and setting information related to image quality for the display device (100). For example, a program may be stored that can identify an output abnormality of the display device based on received image data and update setting information related to image quality to resolve the output abnormality.

[0069] The setting information related to image quality stored in the memory (110) may be updated when receiving received image data or when identifying an output abnormality.

[0070] The memory (110) may be implemented in the form of memory embedded in the display device (100) and / or in the form of memory detachable from the display device (100) depending on the purpose of data storage. For example, data for driving the display device (100) may be stored in the memory (110) embedded in the display device (100), and data for the expansion function of the display device (100) may be stored in the memory (110) detachable from the display device (100).

[0071] In the case of the memory (110) embedded in the display device (100), it may be implemented as at least one of volatile memory (e.g., dynamic RAM (DRAM), static RAM (SRAM), or synchronous dynamic RAM (SDRAM)), non-volatile memory (e.g., one time programmable ROM (OTPROM), programmable ROM (PROM), erasable and programmable ROM (EPROM), electrically erasable and programmable ROM (EEPROM), mask ROM, flash ROM, flash memory (e.g., NAND flash or NOR flash), hard drive, or solid state drive (SSD)).

[0072] The display (120) can display various screens under the control of the processor (140). The display (120) can be implemented as a display including a self-luminous element or a display including a non-luminous element and a backlight. In addition, the display (120) can be implemented as an LFD display. For example, it can be implemented as a display in various forms such as an LCD (Liquid Crystal Display), an OLED (Organic Light Emitting Diodes) display, an LED (Light Emitting Diodes), a micro LED, a Mini LED, a PDP (Plasma Display Panel), a QD (Quantum dot) display, a QLED (Quantum dot light-emitting diodes), etc. The display (120) can also include a driving circuit, a backlight unit, etc., which can be implemented in a form such as an a-si TFT, an LTPS (low temperature poly silicon) TFT, an OTFT (organic TFT), etc.

[0073] For example, when the processor (140) identifies an output abnormality from the display device (100) or another display device (200), the processor (140) updates the setting information related to the image quality based on the identification result, receives image data with changed settings from the source device (300) based on the setting information related to the updated image quality, and controls the display (120) to output an image based on the image data with changed settings.

[0074] The input / output interface (130) includes a circuit and is configured to perform communication with various electronic devices. Specifically, the first input / output interface (130-1) can perform communication with the source device (300), and the second input / output interface (130-2) can perform communication with another display device (200). Specifically, the processor (140) can transmit setting information related to image quality to the source device through the display port included in the first input / output interface. Here, the setting information related to image quality can include information on whether another display device is connected to the second input / output interface. However, the embodiments are not limited thereto, and communication can be performed with various electronic devices in addition to the above-described devices. At this time, when image data corresponding to the setting information is received from the source device through the display port, the image corresponding to the image data can be output.

[0075] The processor (140) can receive various data or information, particularly image data, from another display device (200) or source device (300) connected through the input / output interface (130).

[0076] For example, the processor (140) can receive image data from another display device (200) through the second input / output interface (130-2).

[0077] The processor (140) may transmit various data or information, such as image data, image quality-related setting information, and the like, to another display device (200) or a source device (300) through the input / output interface (130). Specifically, the input / output interface (130) may include a first input / output interface (130-1) that receives image data corresponding to the setting information and a second input / output interface (130-2) that receives image data from another display device (200). However, the present invention is not limited thereto, and may include a plurality of input / output interfaces.

[0078] The input / output interface (130) may include various wired interfaces such as a USB port, an HDMI port, a display port, an RGB port, a DVI (Digital Visual Interface) port, a Thunderbolt, and a component port, as well as various wireless interfaces such as a WiFi module, a Bluetooth module, a wireless communication module, an NFC module, and a UWB module (Ultra Wide Band).

[0079] The processor (140) controls the overall operation of the display device (100). Specifically, the processor (140) is connected to each component of the display device (100) and can control the overall operation of the display device (100). The processor (140) may be composed of one or more processors.

[0080] The processor (140) can perform operations of the display device (100) according to various embodiments by executing one or more commands stored in the memory (110).

[0081] The processor (140) may include one or more of a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), an APU (Accelerated Processing Unit), a MIC (Many Integrated Core), a DSP (Digital Signal Processor), an NPU (Neural Processing Unit), a hardware accelerator, or a machine learning accelerator. The processor (140) may control one or any combination of other components of the display device (100), and may perform operations related to communication or data processing. The processor (140) may execute one or more programs or instructions stored in the memory (110). For example, one or more processors (140) may execute one or more instructions stored in the memory (110), thereby performing a method according to one or more embodiments of the present disclosure.

[0082] In embodiments of the present disclosure, the processor (140) may mean a system on a chip (SoC) in which one or more processors and other electronic components are integrated, a single-core processor, a multi-core processor, or a core included in a single-core processor or a multi-core processor, wherein the core may be implemented as a CPU, a GPU, an APU, a MIC, a DSP, an NPU, a hardware accelerator, or a machine learning accelerator, but embodiments of the present disclosure are not limited thereto.

[0083] In addition, the processor (140) can identify the received image data as being out of the output range of the display device (100) based on setting information related to image quality. The specifications supported by the display device (100) may include setting information related to image quality, such as resolution, refresh rate, bandwidth, color, MST mode information, HBR specification information, DP version, and HDR (High Dynamic Range).

[0084] Hereinafter, a method for updating setting information related to image quality by changing HBR (High Bit Rate) specification information, DP (DisplayPort) version information, and MST mode according to various embodiments of the present disclosure will be specifically described.

[0085] FIG. 3 is a diagram illustrating an example of a display device updating setting information according to at least one embodiment of the present disclosure.

[0086] When the processor (140) identifies an abnormality in the output of the display device based on the received image data, the processor (140) can update the image quality-related setting information by changing the HBR (High Bit Rate) rating information in the image quality-related setting information to a lower rating than the currently set HBR rating. HBR refers to a data transmission speed rating of the DisplayPort standard for transmitting high-resolution video and audio signals, and the transmission speed of image data can be determined according to the HBR rating.

[0087] For example, the processor (140) can reduce the amount of data transmitted by changing the setting information from EDID1 (111) in which the setting information of HBR3, which transmits data at a maximum speed of 8.1 Gbps per lane, is stored to EDID2 (112) in which the setting information of HBR2, which transmits data at a maximum speed of 5.4 Gbps per lane, is stored. EDID refers to a data format that transmits setting information about functions supported by a display device to a source device, and may include information such as resolution, refresh rate, transmission speed, and color depth. However, it is not limited to changing to HBR2, and may be changed to various HBRs that support lower transmission speeds than the currently set HBR, such as HBR and HBR1.

[0088] FIG. 4 is a diagram illustrating an example of a display device updating setting information according to at least one embodiment of the present disclosure.

[0089] If the processor (140) identifies an output abnormality of the display device based on the received image data, the processor (140) can update the image quality-related setting information by changing the DP (DisplayPort) version information in the image quality-related setting information to a lower version than the currently set DP version. DP refers to an interface standard of a display device used to transmit video and audio signals between display devices, and the supported bandwidth and data transmission speed can be determined according to the DP version.

[0090] For example, the processor (140) can change the amount of data transmitted by changing the setting information from EDID1 (113) in which the setting information of DP 1.4 version, which transmits data at a speed of 8.1 Gbps per lane, is stored to EDID2 (114) in which the setting information of DP 1.1 (or 1.2) version, which transmits data at a speed of 5.4 Gbps per lane (or 2.16 Gbps per lane), is stored.

[0091] However, it is not limited to this, and it can be changed to various DP versions that support lower transmission speeds than the currently set DP version, such as DP1.0.

[0092] FIG. 5 is a diagram illustrating an example of a display device updating setting information according to at least one embodiment of the present disclosure.

[0093] When an abnormality in the output of the display device is identified based on the received image data, the processor (140) can update the image quality-related setting information by changing the information supporting the MST mode in the image quality-related setting information to information supporting the SST (Single-Stream Transport) mode. The SST mode refers to a mode that sets the display device (100) to receive a single data stream from the source device (300).

[0094] For example, the bandwidth for processing a display signal can be reduced by changing the setting information from EDID1 (115) where information supporting MST mode is stored to EDID2 (116) where information supporting SST mode is stored.

[0095] FIG. 6 is a drawing for explaining the MST mode and the SST mode in a display device according to at least one embodiment of the present disclosure.

[0096] MST mode is a mode that receives multiple streams corresponding to multiple images from a single port, wherein a first image corresponding to the display device among the multiple images is displayed through the display, and a second image corresponding to the other display device is displayed through the other display device. SST mode refers to a mode that sets the display device (100) to receive one data stream from the source device (300). That is, when set to MST mode, the source device (300) divides multiple images and transmits them through two streams so that different images are output to each display, and when set to SST mode, the source device (300) can transmit image data through one stream so that the same image is output to each display.

[0097] When using the MST mode and HDR function with them turned on at the same time, if compatibility issues occur due to an increase in the amount of data transmitted, a blackout phenomenon may occur on the screen (121) of the display device (100) or the screen (221) of another display device (200). In this case, if the setting information is updated by changing the information supporting the MST mode in the setting information related to image quality to information supporting the SST (Single-Stream Transport) mode, the output abnormality occurring on the display device (100) or another display device (200) is resolved, and a normal screen (122, 222) can be output.

[0098] In the above, examples of converting MST mode to SST mode or changing the DP version are described, but during implementation, changes to various quality settings that can change the amount of data transmitted may be applied in addition to the examples described above.

[0099] FIG. 7 is a block diagram illustrating a configuration of a source device according to at least one embodiment of the present disclosure.

[0100] A source device refers to a device that generates display signals such as image data and transmits them to another electronic device. In FIG. 7, the source device (300) is illustrated as a PC, but the source device (300) may be implemented as various types of electronic devices such as a computer, laptop, tablet, smartphone, game console, etc. However, the source device (300) is not limited thereto, and in some cases, it may be implemented as various devices such as an image processing device (e.g., set-top box, one connected box) that is connected to another electronic device and provides image data.

[0101] The source device (300) may include a memory (310), an input / output interface (320), and a processor (330). Specific examples of the processor (330), the memory (310), and the input / output interface (320) have been described in the section on FIG. 2, and therefore, redundant description is omitted.

[0102] The memory (310) may store various data, programs, commands, etc. used in the source device (300). In addition, the memory (310) may store an application that can control the operation of the source device (300) by performing communication with the above-described display device (100) and other display devices (200). As described above, when setting information related to image quality is received from the display device (100), data can be transmitted with specifications such as full speed and bandwidth in a range corresponding to the set information.

[0103] The memory (310) may store existing or updated setting information of the display device (100). Based on the stored setting information, data may be transmitted at a range of specifications, such as full speed and bandwidth, corresponding to the set information.

[0104] The processor (330) can receive image data or setting information from the display device (100) through the input / output interface (320) and transmit data in a range corresponding to the set information to the display device (100).

[0105] FIG. 8 is a diagram illustrating an example of a display device updating setting information according to at least one embodiment of the present disclosure.

[0106] Referring to FIG. 8, various data can be transmitted one-way or bidirectionally between the source device (300), the display device (100), and the other display device (200).

[0107] For example, when an output abnormality occurs on the screen (221) of another display device (200), information about the output abnormality can be transmitted to the display device (100), and the display device can update setting information related to image quality from EDIE1 to EDID2 based on the information about the output abnormality received. In addition, when the updated setting information is transmitted to the source device (300), data in a range corresponding to the updated setting information can be received from the source device (300). When data in a range corresponding to the updated setting information is transmitted to the other display device (200), the other display device (200) can resolve the output abnormality phenomenon based on the data whose settings have been changed.

[0108] Meanwhile, the embodiments are not limited to cases where the display device (100) detects an output abnormality or updates setting information, and the operation of detecting an output abnormality or updating setting information may be performed in whole or in part by the source device (300) or another display device (200).

[0109] FIG. 9 is a sequence diagram illustrating an operation sequence of a display device and a source device according to at least one embodiment of the present disclosure.

[0110] In FIG. 9, the source device (300) and the display device (100) are illustrated as performing direct communication, but this is not necessarily limited to this. As illustrated in FIG. 1, another display device (200) may be connected to the display device (100), and the display device (100) may relay communication between the source device (300) and the other display device (200).

[0111] Referring to FIG. 9, the source device (300) can generate image data and transmit it to the display device (100). The display device (100) can identify an output abnormality of the display device (100) based on the received image data (S1010).

[0112] Additionally, the display device (100) can update setting information related to image quality based on the identification result to resolve an output abnormality phenomenon (S1020).

[0113] When the setting information is updated, the display device (100) can transmit the updated setting information to the source device (300) (S1030).

[0114] When the source device (300) transmits image data corresponding to the updated setting information to the display device (100), the display device (100) can output an image based on the received image data (S1040). Here, the setting information related to image quality includes information regarding whether another display device is connected.

[0115] FIG. 10 is a flowchart for explaining an output method of a display device according to at least one embodiment of the present disclosure.

[0116] The source device (300) can generate image data and transmit it to the display device (100). The display device (100) can identify an output abnormality of the display device (100) based on the received image data (S1010).

[0117] Additionally, the display device (100) can update setting information related to image quality to resolve output abnormalities based on the identification results (S1020).

[0118] When the setting information is updated, the display device (100) can transmit the updated setting information to the source device (300) (S1030).

[0119] When the source device (300) transmits image data corresponding to the updated setting information to the display device (100), the display device (100) can output an image based on the received image data (S1040). Here, the setting information related to image quality includes information regarding whether another display device is connected.

[0120] Meanwhile, although the above description is based on the case where a display device outputs an image, it is not necessarily limited to a display device, and various electronic devices that have the function of resolving output abnormalities by performing communication with a source device can perform the same operation. For example, in the case of an audio device that outputs voice data, the output abnormality can be resolved by exchanging data with the source device. For these types of electronic devices, if data causing the output abnormality is provided, the output abnormality can be identified, and then setting information related to the voice quality can be updated and the updated setting information can be transmitted to the source device, etc.

[0121] The various embodiments described above may be implemented as a single embodiment, or at least one embodiment may be combined with each other in whole or in part and implemented together in one device.

[0122] According to the various embodiments described above, even if an output abnormality occurs on a display device, the display device can automatically resolve the output abnormality without user intervention. In other words, the display device can automatically resolve the output abnormality, thereby enhancing user convenience. Furthermore, output abnormalities can be prevented based on image data received before the output abnormality occurs.

[0123] Various embodiments of the present disclosure may be implemented as software stored in a machine-readable storage media that can be mounted or connected to a display device, a source device, and other various electronic devices (e.g., a computer).

[0124] Specifically, a non-transitory readable storage medium may be provided in which software is stored for sequentially performing the steps of: when image data is received from a source device, identifying an output abnormality of a display device based on the image data; updating setting information related to image quality; transmitting the updated setting information related to image quality to the source device; and when image data with changed settings is received from the source device, outputting an image corresponding to the image data with changed settings.

[0125] A device equipped with such a non-transitory readable medium can perform various operations, such as identifying outputs beyond those described in the various embodiments described above, updating configuration information, and transmitting updated configuration information.

[0126] In the context of non-transitory readable storage media, 'non-transitory' means that the storage medium does not contain signals and is tangible, but does not distinguish between whether data is stored semi-permanently or temporarily on the storage medium.

[0127] Alternatively, a program for performing the method according to the various embodiments described above may be distributed online through an application store. In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated on a storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0128] Each component (e.g., a module or a program) according to various embodiments may be composed of one or more entities, and some of the aforementioned sub-components may be omitted, or other sub-components may be further included in various embodiments. Alternatively or additionally, some components (e.g., a module or a program) may be integrated into a single entity, which may perform the same or similar functions as those performed by each of the respective components prior to integration. Operations performed by a module, program, or other component according to various embodiments may be executed sequentially, in parallel, iteratively, or heuristically, or at least some operations may be executed in a different order, omitted, or other operations may be added.

[0129] Although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person skilled in the art to which the present disclosure pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present disclosure.

Claims

1. In the display device, Memory that stores instructions and settings related to image quality; display; A first input / output interface including a display port; Second input / output interface; and Contains at least one processor, The above instructions, when executed by the at least one processor, cause the display device to: Transmits setting information related to the image quality to the source device through the display port; When image data corresponding to the setting information related to the image quality is received from the source device through the display port, the display is controlled to display an image corresponding to the image data, Identifying an output abnormality of the display device based on the received image data, and updating setting information related to the image quality based on the identified output abnormality, Transmitting the setting information related to the updated image quality to the source device through the display port; The above video quality related setting information is: A display device including information on whether another display device is connected to the second input / output interface.

2. In paragraph 1, The settings information related to the above updated video quality is: A display device, wherein the source device is setting information that causes the image data to be transmitted when the settings of the image data are changed.

3. In paragraph 1, The above instructions, when executed by the at least one processor, cause the display device to: A display device that, when image data with settings changed according to setting information related to the updated image quality is received from the source device, controls the display to display an image based on the image data with the settings changed.

4. In paragraph 1, The above instructions, when executed by the at least one processor, cause the display device to: When using the MST (Multi-Stream Transport) mode and the function of improving the image quality of the display device at the same time, an output abnormality of the display device is identified based on the received image data, and setting information related to the image quality is updated based on the identified output abnormality. The above MST mode is, A display device in which a plurality of streams corresponding to each of a plurality of images are received from one port of the first input / output interface, and a first image corresponding to the display device among the plurality of images is displayed through the display, and a second image corresponding to the other display device is displayed through the other display device.

5. In paragraph 1, The above instructions, when executed by the at least one processor, cause the display device to: In the HBR (High Bit Rate) grade information in the setting information related to the above video quality, change it to a specification lower than the currently set HBR grade, The above HBR is, A display device, which is information that determines the transmission speed of the above image data.

6. In paragraph 1, The above instructions, when executed by the at least one processor, cause the display device to: A display device that changes the DP (DisplayPort) version information in the setting information related to the above image quality to a version lower than the currently set DP version.

7. In paragraph 1, The above instructions, when executed by the at least one processor, cause the display device to: In the information supporting the MST (Multi-Stream Transport) mode in the setting information related to the above image quality, the information supporting the MST mode is changed to information supporting the SST (Single-Stream Transport) mode. The above SST mode is, A display device, wherein the display device is set to receive one data stream from the source device.

8. In paragraph 1, The above instructions, when executed by the at least one processor, cause the display device to: Identifying an output abnormality of the other display device based on the image data received from the other display device through the second input / output interface, and updating setting information related to the image quality based on the identified output abnormality. A display device that transmits setting information related to the updated image quality to the source device through the display port.

9. In paragraph 1, The above instructions, when executed by the at least one processor, cause the display device to: Update the setting information related to the image quality based on information about an output abnormality received from the other display device through the second input / output interface, A display device that transmits setting information related to the updated image quality to the source device through the display port.

10. In paragraph 1, The above instructions, when executed by the at least one processor, cause the display device to: A display device that, when setting information related to updated image quality is received from the other display device through the second input / output interface, transmits the setting information related to the received image quality to the source device through the display port.

11. In paragraph 1, The above video quality related setting information is: A display device including information on at least one of connection with the above-mentioned other display device, resolution, refresh rate, bandwidth, color, MST mode information, HBR specification information, DP version, and HDR (High Dynamic Range).

12. In paragraph 1, The above instructions, when executed by the at least one processor, cause the display device to: A display device that identifies the received image data as being out of the output range of the display device based on setting information related to the image quality, if the received image data is outside the specification range supported by the display device.

13. In the output method of the display device, When image data is received from a source device, a step of identifying an output abnormality of the display device based on the image data; A step of updating setting information related to image quality based on the identified output abnormality; a step of transmitting setting information related to the updated image quality to the source device; and When image data corresponding to the setting information related to the updated image quality is received from the source device, a step of displaying an image corresponding to the received image data corresponding to the setting information related to the updated image quality is included; The above video quality related setting information is: An output method that includes information about whether another display device is connected.

14. In paragraph 13, The settings information related to the above updated video quality is: An output method, wherein the source device is setting information that causes the image data to be transmitted when the settings of the image data are changed.

15. A non-transitory computer-readable recording medium including a program for executing an output method of a display device, The output method of the above display device is: When image data is received from a source device, a step of identifying an output abnormality of the display device based on the image data; A step of updating setting information related to image quality based on the identified output abnormality; a step of transmitting setting information related to the updated image quality to the source device; and When image data corresponding to the setting information related to the updated image quality is received from the source device, a step of displaying an image corresponding to the received image data corresponding to the setting information related to the updated image quality is included; The above video quality related setting information is: A computer-readable recording medium containing information regarding whether another display device is connected.

Images