Display device, device communicably connected to display device, or system comprising same, or method for power synchronization therefor

Abstract

A display device for performing power synchronization with a connected device, according to one embodiment of the present invention, is presented. The device comprises: a memory for storing a protocol for the power synchronization; and a processor for performing the power synchronization with the connected device according to the protocol for the power synchronization, wherein the processor can detect whether a predetermined condition for the power synchronization is satisfied in response to the display device being powered on, activate a power synchronization mode for a preset time in response to the predetermined condition being satisfied, and transmit a control signal for the power synchronization.

Description

A display device, a device communicated with the display device, or a system composed of the same, or a method for power synchronization for the same.

[0001] The present invention proposes a display device, a device communicated with the display device, a system composed of the same, or a method for power synchronization for the same, and more specifically, a device, system, or method for power synchronization between a device connected to the display device.

[0002] Set-top boxes and OTT devices, which connect to display devices such as TVs to stream content or provide other functions, have established themselves as important elements of modern home entertainment.

[0003] A set-top box is a device that connects to a TV to decode external signals and display them on the screen. It is primarily used to support traditional broadcasting services such as cable TV, satellite TV, and IPTV. Set-top boxes decode broadcast signals to provide broadcast channels viewable on the TV, and feature a DVR (Digital Video Recorder) function that allows recording and playback of broadcasts. Additionally, IPTV set-top boxes provide internet-based functions through an internet connection, such as supporting VOD (Video on Demand), app execution, and web browsing.

[0004] OTT devices are devices that provide streaming content over the Internet. Unlike traditional broadcasting, content can be accessed as long as there is an Internet connection. OTT devices provide streaming content supporting various OTT platforms, such as movies, dramas, and documentaries. They also support apps from each content streaming provider and are typically small and lightweight, making them easy to use on other TVs or in different locations. Additionally, OTT devices are characterized by the ability to add new features through regular software updates.

[0005] Recently, many devices combining set-top boxes and OTT functions have appeared. For example, IPTV set-top boxes are being released with dedicated apps produced or distributed by content streaming companies installed, supported, or included.

[0006] As such, set-top boxes and OTT devices are evolving to meet the diverse needs of users with their respective characteristics and advantages.

[0007] Meanwhile, in the case of a set-top box, the device is configured with an independent power supply, and accordingly, the power can be turned on or off via a remote controller (commonly referred to as a “remote control”). However, since a set-top box is a device used in connection with a display device such as a TV, it is generally desirable for the power on / off to be synchronized (or matched) with the display device.

[0008] Accordingly, the present specification proposes a method for synchronizing the power status of a display device and a device connected thereto (e.g., a set-top box).

[0009] The present invention proposes a device or method for achieving synchronization of the power status of a display device and a device connected thereto.

[0010] In addition, the present invention proposes a method of using a remote controller of the display device, or a peripheral device or device, to achieve synchronization of the power status of the display device and the device connected thereto.

[0011] The problems to be solved by the present invention are not limited to the problems to be solved above, and other problems not mentioned will be clearly understood by those skilled in the art to which the present invention belongs from the description below.

[0012] A display device configured to perform power synchronization with a connected device according to the present invention is proposed, comprising: a memory configured to store a protocol for power synchronization; and a processor configured to perform power synchronization with the connected device according to the protocol for power synchronization, wherein the processor detects whether a predetermined condition for power synchronization is satisfied when the power of the display device is turned on, activates a power synchronization mode for a preset time when the predetermined condition is satisfied, transmits a control signal for power synchronization, and may be configured to ignore an input source switching request to the connected device received from the connected device while the power synchronization mode is activated.

[0013] Additionally or alternatively, the above-determined condition may be when the home screen of the operating system (OS) of the display device is displayed on the display of the display device, or when the user interface of a preset app is displayed.

[0014] Additionally or alternatively, the above-determined condition may be that the connected device is in a powered-off state.

[0015] Additionally or alternatively, the above-determined condition may be a state in which a control signal for power synchronization can be transmitted through a remote controller of the display device or a peripheral device connected to the display device, or a state in which the display device can transmit an HDMI-CEC command to the connected device.

[0016] Additionally or alternatively, the processor may be configured to determine whether the connected device is in a power-off state based on any one of a video signal received from the connected device, information of the connected device retrieved through an external connection interface of the display device, or power status information of the connected device received from a peripheral device connected to the display device.

[0017] Additionally or alternatively, the control signal for power synchronization may include a direct signal or an indirect signal transmitted from the display device.

[0018] Additionally or alternatively, the indirect signal may include a signal transmitted through a device connected to the display device via a wired or wireless method.

[0019] Additionally or alternatively, the processor may be configured to transmit a request for transmission of a control signal for power synchronization with the connected device to a remote controller of the display device.

[0020] Additionally or alternatively, the processor may be configured to check the power status of the connected device after a preset time has passed since the control signal for power synchronization was transmitted.

[0021] According to another embodiment of the present invention, a system is proposed comprising a display device configured to perform power synchronization with a connected device and a remote controller for the display device, wherein the display device comprises a memory configured to store a protocol for power synchronization; and a processor configured to perform power synchronization with the connected device according to the protocol for power synchronization, wherein the processor detects whether a predetermined condition for power synchronization is satisfied when the display device is powered on, activates a power synchronization mode for a preset time when the predetermined condition is satisfied, transmits a request or instruction for the transmission of a control signal for power synchronization, and is configured to ignore an input switching request for the output of video data from the connected device received from the connected device while the power synchronization mode is activated, and the remote controller may be configured to transmit a control signal for power synchronization according to the request or instruction for the transmission of a control signal for power synchronization.

[0022] According to another embodiment of the present invention, a method for performing power synchronization with a connected device is proposed, wherein the method is performed by a display device configured to perform power synchronization with a connected device, and may include the steps of: detecting whether a predetermined condition for power synchronization is satisfied when the power of the display device is turned on; activating a power synchronization mode for a preset time and transmitting a control signal for power synchronization when the predetermined condition is satisfied; and ignoring a request to switch an input source to the connected device received from the connected device while the power synchronization mode is activated.

[0023] In addition, according to another embodiment of the present invention, a computer-readable medium is proposed that stores code configured to be executed by a computer or processor for a method to perform power synchronization with a connected device.

[0024] The above-mentioned problem-solving methods are merely some of the embodiments of the present invention, and various embodiments reflecting the technical features of the present invention can be derived and understood by those skilled in the art based on the detailed description of the present invention to be described below.

[0025] The present invention has the following technical effects.

[0026] The present invention can achieve synchronization of the power status of a display device and a device connected thereto.

[0027] In addition, the present invention can achieve synchronization of the power status of a display device and a device connected thereto by using a remote controller of the display device, or a peripheral device or device.

[0028] This eliminates the need for users to control the power of the display device and the connected device separately, thereby further improving the user experience.

[0029] In addition, the present invention can prevent the input source switching of a display device from being performed unnecessarily.

[0030] The effects according to the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the following detailed description of the invention.

[0031] The accompanying drawings, which are included as part of the detailed description to aid in understanding the present invention, provide embodiments of the present invention and explain the technical concept of the present invention together with the detailed description.

[0032] Figure 1 is a figure for explaining the phenomenon of inconsistency in the power status of a display device and a device connected thereto.

[0033] FIG. 2 is a diagram illustrating a process for achieving synchronization of the power status of a display device and a device connected thereto according to the present invention.

[0034] Figure 3 illustrates a flowchart of a method corresponding to the process shown in Figure 2.

[0035] FIG. 4 is a diagram illustrating a process for achieving synchronization of the power status of a display device and a device connected thereto according to the present invention.

[0036] Figure 5 illustrates a flowchart of a method corresponding to the process shown in Figure 4.

[0037] FIG. 6 is a diagram illustrating a process for achieving synchronization of the power status of a display device and a device connected thereto according to the present invention.

[0038] Figure 7 illustrates a flowchart of a method corresponding to the process shown in Figure 6.

[0039] FIG. 8 illustrates a flowchart of a method for achieving synchronization of the power status of a display device and a device connected thereto according to the present invention.

[0040] FIGS. 9, FIGS. 10 and FIGS. 11 are drawings for explaining the process of transmitting or sending a signal to control the power status of a device connected to a display device, utilizing a display device and a device connected thereto and a peripheral device according to the present invention.

[0041] FIG. 12 shows a block diagram of a display device according to the present invention.

[0042] 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 will be 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 spirit and technical scope of the present invention.

[0043] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0044] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0045] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0046] In this application, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0047]

[0048] Figure 1 is a figure for explaining the phenomenon of inconsistency in the power status of a display device and a device connected thereto.

[0049] The display device (10) can be connected to a device (20) connected thereto via a wired or wireless connection. FIG. 1 illustrates a wired connection via an HDMI interface. An example of a connected device (20) may include a set-top box.

[0050] A remote controller (1) for a display device can transmit a control signal instructing the display device to turn on or off. The display device (10) can turn on or off the power according to the received control signal.

[0051] The power of the connected device (20) can be controlled (turned on or off) via a dedicated remote controller (not shown) for the connected device, but controlling it via a remote controller (1) for the display device (10) can provide a more convenient user environment. This is because the connected device (20) is intended for delivering content to be displayed on the display of the display device (10), so it is natural or necessary for the power state (on or off) of the display device (10) and the power state of the connected device (20) to be synchronized or matched.

[0052] Previously, the power status of the display device (10) and the connected device (20) was controlled using two remote controllers or through the remote controller of the display device (10), but there were some problems.

[0053] For example, they do not determine whether the power state of the display device (10) and the connected device (20) is synchronized or not, but unconditionally transmit a power switching control signal for the two devices or devices (10, 20), so that if the two devices or devices (10, 20) are in opposite power states, this state can be repeated infinitely.

[0054] In addition, the method of controlling the connection device (20) to always turn on together with the display device (10) has the disadvantage that, since the user does not always use the display device (10) to watch content through the connection device (20), user settings must be added or the power state of the connection device (20) must always be synchronized or matched with the display device (10) unnecessarily.

[0055] To solve this, a method is proposed to link the transmission of a control signal for changing the power state of a connected device (20) with the transmission of a control signal for changing the power state of a display device (10) of a remote controller (1).

[0056] That is, when the remote controller (1) transmits a control signal for changing the power state of the display device (10), the transmission of a control signal for changing the power state of the connected device (20) can be configured to follow. In FIG. 1, SS represents a control signal for changing the power state of the connected device (20) transmitted from the remote controller (1).

[0057] In this way, by enabling the transmission of a control signal for changing the power state of the connected device (20) through the remote controller (1), the power state of the display device (10) and the connected device (20) can be synchronized.

[0058] Below, another method for power synchronization between the display device (10) and the connected device (20) is proposed.

[0059]

[0060] FIG. 2 is a diagram illustrating a process for achieving synchronization of the power status of a display device and a device connected thereto according to the present invention. FIG. 2 illustrates a process for synchronizing the power of a connected device (20) with that of a display device (10) after it is detected that the power of the display device (10) is turned ON or after a control command to turn ON the power of the display device (10) is detected.

[0061] Referring to FIG. 2, a remote controller (1), a connecting device (20), and a peripheral device (30) of a display device (10) are shown, centered around a display device (10).

[0062] FIG. 2 explains a method for synchronizing the power state that can be applied when the HDMI-CEC (Consumer Electronics Control) function of the display device (10) is ON.

[0063] The display device (10) can transmit a control signal for power synchronization of the connected device (20) through a direct signal or an indirect signal. It can be configured as follows.

[0064] (a) Transmission of control signals for power synchronization through an interface with a connected device

[0065] As illustrated, the display device (10) can be connected to a connection device (20). For example, the display device (10) can be connected to the connection device (20) via an HDMI interface.

[0066] It can be configured to transmit a control signal for power synchronization through a communication protocol for an interface between a display device (10) and a connected device (20). For example, if an HDMI interface is used, the display device (10) can transmit a control signal for power synchronization to the connected device (20) using a command of the HDMI-CEC (Consumer Electronics Control) function.

[0067] A connected device (20) that receives a control signal for power synchronization may be configured to change its power state accordingly. For example, if the control signal for power synchronization indicates the ON of the power, the connected device (20) may be configured to change its power state to ON.

[0068]

[0069] (b) Transmission of control signals for power synchronization via peripheral devices

[0070] As illustrated, the display device (10) can be connected to a peripheral device (30). The peripheral device (30) may include an IR (infrared) blaster. For example, the peripheral device (30) may include a smartphone wirelessly connected to the display device (10), and the smartphone may be equipped with an IR blaster.

[0071] The display device (10) may be configured to instruct or request the peripheral device (30) to transmit a control signal for power synchronization for the connected device (20). Accordingly, the peripheral device (30) may be configured to transmit a control signal for power synchronization to the connected device (20).

[0072] A connected device (20) that receives a control signal for power synchronization may be configured to change its power state accordingly. For example, when the power of the connected device (20) is OFF, if it receives a control signal for power synchronization, i.e., a control signal for changing the power state, the connected device (20) may be configured to change its power state to ON.

[0073]

[0074] (c) Transmission of control signals for power synchronization via remote controller

[0075] As illustrated, the display device (10) can be connected to a remote controller (1). For example, the display device (10) can be paired with the remote controller (1) via Bluetooth. The display device (10) can instruct or request the remote controller (1) to transmit or send a control signal on its behalf for power synchronization with the connected device (20).

[0076] If the display device (10) is not Bluetooth paired with the remote controller (1) at the time when the sending, transmitting, or sending of a control signal for power synchronization is determined, the display device (10) may attempt to Bluetooth pair with the remote controller (1). Once Bluetooth pairing is completed, the display device (10) may instruct or request the remote controller (1) to send the control signal for power synchronization with the connected device (20) on its behalf.

[0077] Alternatively, if the display device (10) is not Bluetooth paired with the remote controller (1) at the time when the sending, transmitting, or sending of a control signal for power synchronization is determined, the display device (10) may not use or may not be able to use the method of transmitting a control signal for power synchronization with the connected device (20) through the remote controller (1).

[0078] Accordingly, the remote controller (1) can be configured to send a control signal for power synchronization to the connected device (20).

[0079] A connected device (20) that receives a control signal for power synchronization may be configured to change its power state accordingly. For example, when the power of the connected device (20) is OFF, if it receives a control signal for power synchronization, i.e., a control signal for changing the power state, the connected device (20) may be configured to change its power state to ON.

[0080] In addition, the above three control signals or transmission methods may be assigned priorities. For example, priorities may be assigned in the order of (a), (b), and (c). That is, (a) may be assigned the highest priority, and (c) may be assigned the lowest priority. However, the order of priority is merely an example, and priorities may be assigned in other order.

[0081] As one embodiment, as shown in FIG. 2, a method of using (a) and (b) or (c) sequentially is proposed.

[0082] In this method, a method of transmitting a control signal for power synchronization via an HDMI-CEC command corresponding to a direct signal of the display device (10) to the connected device (20) may be used first. However, the HDMI-CEC command transmitted from the display device (10) to the connected device (20) may be configured to be transmitted only a preset number of times. For example, the HDMI-CEC command may be configured to be transmitted only once. This is to perform a power synchronization attempt using another control signal if power synchronization is not achieved through the HDMI-CEC command.

[0083] Additionally, in this method, the transmission of a control signal for IR signal-based power synchronization by a remote controller (1) or a peripheral device (30) may be restricted for a certain period of time after the power of the display device (10) is turned ON. This is to first attempt power synchronization between the display device (10) and the connected device (20) using the HDMI-CEC command described above.

[0084] First, in order to determine whether a power synchronization process is required, the display device (10) may be configured to obtain information regarding the power status of the connected device (20). This information may be obtained through any one of three methods as follows, but the present invention is not limited thereto.

[0085] The device (10) can detect whether there is a video signal output from the connected device (20) through an interface (e.g., an HDMI interface) with the connected device (20).

[0086]

[0087] - Determining the effective resolution of the video signal

[0088] This is a method for checking whether a signal input from a connected device (20) to a display device (10) is a supported resolution. If an input of a supported resolution is detected, the device (10) can determine that there is a video signal output from the connected device (20).

[0089] The device (10) can check whether the signal input from the connected device (20) matches the resolution specified in the EDID (Extended Display Identification Data). The EDID is data that stores information such as supported resolution and refresh rate.

[0090] Additionally, the device (10) can check the resolution and frame rate of the signal input from the connected device (20) to determine the effective resolution of the video signal. This is a process of analyzing the resolution (e.g., 1920x1080) and frame rate (e.g., 60Hz) of the input signal to determine whether it is valid.

[0091] Additionally, the device (10) can verify whether the input signal can be properly decoded by checking timing parameters (e.g., VSync, HSync, clock frequency, etc.) in the signal input from the connected device (20), thereby verifying the effective resolution of the video signal.

[0092]

[0093] - HDMI TMDS (Transition Minimized Differential Signaling) signal detection

[0094] The TMDS (Transition Minimized Differential Signaling) signal used in HDMI is a technology that transmits high-speed digital video and audio data. TMDS signal detection is used to verify the HDMI connection status and signal validity.

[0095] When the device (10) detects a TMDS clock signal used in HDMI, it can determine that there is a video signal output from the connected device (20).

[0096] The device (10) can detect whether the TMDS data channels (D0, D1, D2) are activated, and if it is detected that they are activated, it can determine that there is a video signal output from the connected device (20).

[0097]

[0098] - HDCP Authentication Protocol Detection

[0099] HDCP (High-bandwidth Digital Content Protection) is an encryption protocol designed to prevent the copying of digital content. HDCP authentication is a security authentication process that takes place between a transmitter (source, i.e., the connected device (20)) and a receiver (display, i.e., the display device (10)) when an HDMI connection is established. If authentication is successful through this security authentication process, the device (10) can determine that a video signal is present from the connected device (20).

[0100] When the presence of a video signal input from a connected device (20) is detected, the device (10) may be configured to determine that the power status information of the connected device (20) is ON.

[0101] When the power of the connected device (20) is ON, no further process for power synchronization is required.

[0102] When the power of the connected device (20) is OFF, the display device (10) may attempt to change the power state of the connected device (20) using an HDMI-CEC command. That is, the display device (10) may be configured to transmit an HDMI-CEC command as a control signal for power synchronization to the connected device (20).

[0103] Then, in order to check whether power synchronization of the connected device (20) has been achieved, the display device (10) may be configured to obtain information regarding the power status of the connected device (20). To this end, the method for obtaining information regarding the power status based on the presence or absence of the video signal input of the connected device (20) described above may be used.

[0104] If power synchronization of the connected device (20) is not achieved through the HDMI-CEC command of the display device (10), a method of using a control signal for power synchronization according to the IR signal of the remote controller (1) or peripheral device (30) corresponding to the indirect signal of the display device (10) may be used.

[0105] Accordingly, the display device (10) may be configured to transmit a signal instructing or requesting the transmission of a control signal for power synchronization for the connected device (20) to a remote controller (1) or a peripheral device (30). Upon receiving the instruction or request for transmission of the control signal for power synchronization from the display device (10), the remote controller (1) or the peripheral device (30) may be configured to transmit the control signal for power synchronization.

[0106] Meanwhile, the remote controller (1) or the peripheral device (30) may be used optionally. For example, if the remote controller (1) cannot be used, for example, if the display device (10) and the remote controller (1) are not Bluetooth paired, the peripheral device (30) may be used.

[0107] Meanwhile, if power synchronization between the display device (10) and the connected device (20) is not achieved even through a control signal for power synchronization corresponding to an indirect signal, the display device (10) may be configured to instruct or request the transmission of an additional control signal for power synchronization to the remote controller (1) or peripheral device (30). Additionally, the transmission of the instruction or request for the transmission of the additional control signal for power synchronization may be limited to a preset number of times, and to this end, the display device (10) may be configured to check the power status of the peripheral device (20) after the transmission of the instruction or request.

[0108]

[0109] FIG. 3 illustrates a flowchart of a method corresponding to the process illustrated in FIG. 2. The method for synchronizing power states illustrated in FIG. 3 can be performed by a display device (10). More specifically, the method for synchronizing power states illustrated in FIG. 3 can be performed by a processor of the display device (10). However, for the sake of simplicity of explanation, the device (10) will be described below as performing the procedure of the method.

[0110] The device (10) may be configured to detect that the power state of the device (10) is changed to the ON state or to detect a control command to turn the power of the device (10) ON (S310).

[0111] Then, the device (10) may be configured to check whether the power status of the connected device (20) is OFF (S320). This is to check whether power synchronization with the connected device (20) is required. If the power of the connected device (20) is ON, the process of FIG. 3 may be terminated.

[0112] As the power status of the connected device is OFF, the device (10) may be configured to check whether the HDMI-CEC function of the display device (10) is enabled (ON) (S330). The HDMI-CEC function may be enabled (ON) or disabled (OFF) according to the user's settings. If the HDMI-CEC function of the display device (10) is OFF, the process of FIG. 3 may be terminated.

[0113] As the HDMI-CEC function of the display device (10) is turned ON, the device (10) may be configured to check whether the input source setting of the display of the device (10) is an external input mode for the connected device (20) (S340). If the input source setting of the display is not an external input mode for the connected device (20), the process of FIG. 3 may be terminated.

[0114] As the set input source of the display is an external input mode for the connected device (20), the device (10) may be configured to send an HDMI-CEC command to the connected device (20) to turn on the power of the connected device (20) (S350).

[0115] The device (10) may be configured to check whether the power status of the connected device (20) is ON (S360).

[0116] As previously explained, the number of transmissions of the HDMI-CEC command to the connected device (20) may be limited. Although FIG. 3 illustrates a case limited to one transmission, several HDMI-CEC command transmissions and a procedure to check the power status of the connected device (20) corresponding to those transmissions may be added.

[0117] When the power state of the connected device (20) is ON, the power synchronization between the device (10) and the connected device (20) has been successfully performed, so the process of FIG. 3 can be terminated.

[0118] When the power state of the connected device (20) is not ON, i.e., OFF, the device (10) may be configured to transmit a control signal to turn ON the power of the connected device (20) using a peripheral device, etc. (S370). As previously described, this may include instructing or requesting the remote controller (1) or the peripheral device (30) to transmit a control signal for power synchronization so that the remote controller (1) or the peripheral device (30) transmits a control signal to change the power state of the IR signal-based connected device (20). That is, the device (10) can change the power state of the connected device (20) to ON in an indirect manner.

[0119] After transmitting a control signal to turn on the power of the connected device (20) using a peripheral device, the device (10) may be configured to additionally check whether the power status of the connected device (20) is ON. If the power status of the connected device (20) is not ON, the device (10) may be configured to transmit a control signal to turn on the power of the connected device (20) using a peripheral device. That is, the device (10) may be configured to perform the S360 and S370 processes again. Additionally, the instruction or request for transmitting a control signal for power synchronization may be limited to a preset number of transmissions.

[0120]

[0121] Above, with reference to FIG. 3, power control of the connected device (20) was described in the case where the power state of the display device (10) is changed to an ON state or a control command to turn the power of the device (10) ON is detected. However, a procedure for power control of the connected device (20) can also be performed when the power state of the display device (10) is changed to an OFF state or when a control command to turn the power of the display device (10) OFF is detected. That is, a method for power synchronization to turn the power of the connected device (20) OFF also falls within the scope of the present invention.

[0122]

[0123] FIG. 4 is a diagram illustrating a process for achieving synchronization of the power status of a display device and a device connected thereto according to the present invention. FIG. 4 illustrates a process for synchronizing the power of a connected device (20) with the display device (10) after it is detected that the power of the display device (10) is turned ON or after a control command to turn ON the power of the display device (10) is detected.

[0124] Referring to FIG. 4, a remote controller (1), a connecting device (20), and a peripheral device (30) of a display device (10) are shown, centered around the display device (10).

[0125] FIG. 4 describes a method for synchronizing power status that can be applied when the HDMI-CEC function of the display device (10) is ON. Additionally, FIG. 4 can be applied when the home screen or home hub of the OS (operating system) of the display device (10) is displayed on the display (11) of the display device (10), or when the user interface of a preset app is displayed (or a preset app is executed).

[0126] This is controlled so that when the power state of the display device (10) changes to ON according to the power synchronization procedure between the display device (10) and the connection device (20) described above, the power state of the connection device (20) is also turned ON. When the power of the connection device (20) is turned ON, it may be configured to request the display device (10) to switch the input source to the input source terminal (interface) to which it is connected using an HDMI-CEC command. This is defined in the HDMI-CEC protocol, which stipulates that when the power of the connection device (20) is turned on, it transmits a command, such as Active Source, to the display device (10) to switch the input source.

[0127] In response to an input source switching request, the display device (10) performs a switching operation to an input source for the input source terminal to which the connected device (20) is connected. This results in a user experience that is contrary to the user's intention to use the home screen or home hub of the OS of the display device (10) or to use a pre-configured app. Accordingly, the embodiment illustrated in FIG. 4 describes a process for ignoring an input source switching request transmitted by the connected device (20) when the home screen or home hub of the OS of the display device (10) is displayed on the display or when a pre-configured app is executed.

[0128] Meanwhile, the information or content output to the display (11) of the display device (10) is merely an example, and if it is a specific user interface or information provided by the OS of the display device (10), the process according to FIG. 4 may be performed.

[0129] The display device (10) can transmit a control signal for power synchronization of the connected device (20) through a direct signal or an indirect signal. It can be configured as follows.

[0130]

[0131] (a) Transmission of control signals for power synchronization through an interface with a connected device

[0132] (b) Transmission of control signals for power synchronization via peripheral devices

[0133] (c) Transmission of control signals for power synchronization via remote controller

[0134] That is, it is the same as the transmission or output of a control signal for power synchronization with the embodiment of FIG. 2.

[0135] When the power ON control signal of the display device (10) is detected or the power of the display device (10) is turned ON, the display device (10) can check whether its HDMI-CEC function is ON and whether the home screen or home hub of the OS of the display device (10) is displayed on the display (11) or whether the user interface of a preset app is displayed.

[0136] When its HDMI-CEC function is ON and the home screen or home hub of the OS or the user interface of a preset app is displayed on the display (11), the display device (10) may be configured to determine the power status of the connected device (20) based on a video signal output from the connected device (20) through an interface with the connected device (20) (e.g., an HDMI interface). For a specific method of determining the power status from the video signal, refer to the previously described content.

[0137] Additionally, the display device (10) can check whether a control signal for power synchronization is available. As an example, the display device (10) can check whether the remote controller (1) or the peripheral device (30) is connected to it. Additionally, or alternatively, the display device (10) can check whether it is in a state to transmit a control signal for power synchronization through the remote controller (1) or the peripheral device (30).

[0138] When the conditions for transmitting the control signal for power synchronization mentioned above are satisfied, the display device (10) may be configured to activate the power synchronization mode for a preset time. While the power synchronization mode is activated, the display device (10) may be configured to ignore HDMI-CEC commands received from the connected device (20) as described below. The power synchronization mode may be configured to be deactivated when the preset time has elapsed.

[0139] Additionally, when the conditions for transmitting a control signal for power synchronization mentioned above are satisfied, the display device (10) can transmit a control signal for power synchronization of the connected device (20) through the remote controller (1) or peripheral device (30).

[0140] The transmission of the control signal for power synchronization through the remote controller (1) is available when the remote controller (1) is Bluetooth paired with the display device (10).

[0141] As another example, when the power state of the connected device (20) is OFF, the display device (10) can use the HMDI-CEC command to transmit a control signal for power synchronization to the connected device (20).

[0142] According to the control signal for power synchronization above, the connected device (20) that has been turned on can be configured to send an HDMI-CEC command to the display device (10) for switching the input source to the input source terminal (interface) to which it is connected.

[0143] However, the display device (10) may be configured not to perform an input source switching in response to an HDMI-CEC command received from a connected device (20). That is, the display device (10) may be configured to ignore an input source switching request received while the power synchronization mode is active.

[0144] Accordingly, the display device (10) can continuously output a home screen or a user interface of a preset app, etc., to the display (11).

[0145]

[0146] FIG. 5 illustrates a flowchart of a method corresponding to the process illustrated in FIG. 4. The method for synchronizing power states illustrated in FIG. 5 can be performed by a display device (10). More specifically, the method for synchronizing power states illustrated in FIG. 5 can be performed by a processor of the display device (10). However, for the sake of simplicity of explanation, the device (10) will be described below as performing the procedure of the method.

[0147] The device (10) may be configured to detect that the power state of the device (10) is changed to the ON state or to detect a control command to turn the power of the device (10) ON (S510).

[0148] The device (10) may be configured to check whether the power status of the connected device (20) is OFF (S520). This is to check whether power synchronization with the connected device (20) is required. If the power of the connected device (20) is ON, the process of FIG. 5 may be terminated.

[0149] As the power of the connected device is OFF, the device (10) may be configured to check whether the HDMI-CEC function of the display device (10) is enabled (ON) (S530). The HDMI-CEC function may be enabled (ON) or disabled (OFF) according to the user's settings. If the HDMI-CEC function of the display device (10) is OFF, the process of FIG. 5 may be terminated.

[0150] As the HDMI-CEC function of the display device (10) is turned ON, the device (10) can be configured to check whether the display (11) of the device (10) outputs the home screen or home hub of the OS of the device (10) or outputs the user interface of a preset app (S540).

[0151] If the display (11) of the device (10) does not display the home screen or home hub of the OS of the device (10), or does not display the user interface of a preset app, the process of FIG. 5 may be terminated.

[0152] If all of the previously described S520, S530, and S540 are satisfied, the device (10) may be configured to enable a power synchronization mode for a preset time. While the power synchronization mode is enabled, the display device (10) may be configured to ignore HDMI-CEC commands received from the connected device (20) as described below. The power synchronization mode may be configured to be disabled after the preset time has elapsed.

[0153] As the display (11) of the device (10) outputs the home screen or home hub of the OS of the device (10) or the user interface of a preset app, the device (10) may be configured to send a control signal to turn on the power of the connected device (20) using a remote controller (1) or a peripheral device (30) (S550). Additionally, the device (10) may be configured to ignore an HDMI-CEC command received from the connected device (20) that has turned on the power, i.e., a request to switch the input source to the input source terminal (interface) to which the connected device (20) is connected (S550).

[0154]

[0155] FIG. 6 is a diagram illustrating a process for achieving synchronization of the power status of a display device and a device connected thereto according to the present invention. FIG. 6 illustrates a process for synchronizing the power of a connected device (20) with that of a display device (10) after it is detected that the power of the display device (10) is turned ON or after a control command to turn ON the power of the display device (10) is detected.

[0156] Referring to FIG. 6, a remote controller (1), a connecting device (20), and a peripheral device (30) of a display device (10) are shown, centered around a display device (10).

[0157] FIG. 6 illustrates a method for synchronizing power status that can be applied when the HDMI-CEC function of the display device (10) is OFF.

[0158] The display device (10) may be configured to determine the power status of the connected device (20) based on a video signal output from the connected device (20) through an interface with the connected device (20) (e.g., an HDMI interface). For a specific method of determining the power status from the video signal, refer to the previously described content.

[0159] When the power state of the connected device (20) is OFF, the display device (10) may transmit a control signal for power synchronization of the connected device (20) through the remote controller (1) or peripheral device (30). Transmission of the control signal for power synchronization through the remote controller (1) is available when the remote controller (1) is Bluetooth paired with the display device (10).

[0160] When the HDMI-CEC function of the display device (10) is OFF, a method to turn on the power of the connected device (20) is to use an indirect signal. Therefore, control can be made so that a control signal for IR signal-based power synchronization is transmitted through the remote controller (1) or peripheral device (30).

[0161]

[0162] FIG. 7 illustrates a flowchart of a method corresponding to the process illustrated in FIG. 6. The method for synchronizing the power state illustrated in FIG. 6 can be performed by a display device (10). More specifically, the method for synchronizing the power state illustrated in FIG. 6 can be performed by a processor of the display device (10). However, for the sake of simplicity of explanation, the device (10) will be described below as performing the procedure of the method.

[0163] The device (10) may be configured to detect that the power state of the device (10) has changed to the ON state or to detect a control command to turn the power of the device (10) ON (S710).

[0164] The device (10) may be configured to check whether the power status of the connected device (20) is OFF (S720). This is to check whether power synchronization with the connected device (20) is required. If the power of the connected device (20) is ON, the process of FIG. 7 may be terminated.

[0165] As the power of the connected device is OFF, the device (10) may be configured to check whether the HDMI-CEC function of the display device (10) is disabled (OFF) (S730). The HDMI-CEC function may be enabled (ON) or disabled (OFF) according to the user's settings. When the HDMI-CEC function of the device (10) is ON, the process of FIG. 7 may be terminated.

[0166] As the HDMI-CEC function of the device (10) is disabled (OFF), the device (10) may be configured to send a control signal to turn on the power of the connected device (20) using a remote controller (1) or a peripheral device (30) (S740).

[0167]

[0168] Meanwhile, in FIGS. 3, 5, and 7, each step may be performed in a different order than illustrated. For example, in FIG. 3, S320, S330, and S340 may be set in a different order than illustrated. As another example, in FIG. 5, S520, S530, and S540 may be set in a different order than illustrated. As yet another example, in FIG. 7, S720 and S730 may be set in a different order than illustrated.

[0169]

[0170] FIG. 8 illustrates a flowchart of a method combining the processes of FIG. 3, FIG. 5, and FIG. 7. The method of synchronizing power states illustrated in FIG. 8 can be performed by a display device (10). More specifically, the method of synchronizing power states illustrated in FIG. 8 can be performed by a processor of the display device (10). However, for the sake of simplicity of explanation, the device (10) will be described below as performing the procedure of the method.

[0171] The device (10) may be configured to detect that the power state of the device (10) is changed to the ON state or to detect a control command to turn the power of the device (10) ON (S810).

[0172] Then, the device (10) may be configured to check whether the power status of the connected device (20) is OFF (S820). This is to check whether power synchronization with the connected device (20) is required. If the power of the connected device (20) is ON, the process of FIG. 8 may be terminated.

[0173] As the power status of the connected device is OFF, the device (10) may be configured to check whether the HDMI-CEC function of the display device (10) is enabled (ON) (S830). The HDMI-CEC function may be enabled (ON) or disabled (OFF) according to the user's settings.

[0174] When the HDMI-CEC function of the device (10) is turned OFF, the process of FIG. 8 can proceed to S870. This will be described later.

[0175] When the HDMI-CEC function of the device (10) is ON, the device (10) may be configured to check whether the input source setting of the device (10)'s display is an external input mode for the connected device (20), or whether the device (10)'s display (11) outputs the home screen or home hub of the device (10)'s OS, or outputs the user interface of a preset app (S840).

[0176] When the display input source setting of the device (10) is an external input mode for the connected device (20), the device (10) may be configured to send an HDMI-CEC command to the connected device (20) to turn on the power of the connected device (20) (S850).

[0177] Then, the device (10) may be configured to check whether the power state of the connected device (20) is ON (S860). If the power state of the connected device (20) is ON, the power synchronization between the device (10) and the connected device (20) has been successfully performed, so the process of FIG. 8 may be terminated.

[0178] When the power state of the connected device (20) is not ON, i.e., OFF, the device (10) may be configured to transmit a control signal to turn ON the power of the connected device (20) using a peripheral device, etc. (S870). As previously described, this may include instructing or requesting the remote controller (1) or the peripheral device (30) to transmit a control signal for power synchronization so that the remote controller (1) or the peripheral device (30) transmits a control signal to change the power state of the IR signal-based connected device (20). That is, the device (10) can change the power state of the connected device (20) to ON in an indirect manner.

[0179] When the display (11) of the device (10) outputs the home screen or home hub of the OS of the device (10) or the user interface of a preset app, the device (10) may be configured to send a control signal to turn on the power of the connected device (20) using a remote controller (1) or a peripheral device (30) (S880). Additionally, the device (10) may be configured to ignore an HDMI-CEC command received from the connected device (20) that has turned on the power, i.e., a request to switch the input source to the input source terminal (interface) to which the connected device (20) is connected (S880).

[0180] After transmitting a control signal to turn on the power of the connected device (20) using a peripheral device, the device (10) may be configured to additionally check whether the power status of the connected device (20) is ON. If the power status of the connected device (20) is not ON, the device (10) may be configured to perform the S870 or S880 process again. Additionally, the instruction or request for the transmission of a control signal for power synchronization may be limited to a preset number of times.

[0181]

[0182] Above, with reference to FIG. 8, power control of the connected device (20) was described in the case where the power state of the display device (10) is changed to an ON state or a control command to turn the power of the device (10) ON is detected. However, a procedure for power control of the connected device (20) can also be performed when the power state of the display device (10) is changed to an OFF state or when a control command to turn the power of the display device (10) OFF is detected. That is, a method for power synchronization to turn the power of the connected device (20) OFF also falls within the scope of the present invention.

[0183]

[0184] FIGS. 9, 10, and 11 are diagrams illustrating the process of transmitting, sending, or sending a signal to control the power status of a device connected to a display device, utilizing a display device according to the present invention, a device connected thereto, and a peripheral device. In FIGS. 9 to 11, the dotted line connecting the connected device (20), the peripheral device (40), and the display device (10) indicates that they are connected to each other via a wireless network.

[0185] FIG. 9 presents a total of four (a to d) means for sending, transmitting, or sending "control signals for power synchronization." FIG. 10 also presents a total of four (a to d) means for sending, transmitting, or sending "control signals for power synchronization," with the difference from FIG. 9 being that a smart speaker (11) is placed and used instead of a remote controller (1).

[0186] According to FIG. 9, the display device (10) may use any one of the following four methods as a control signal or transmission method for power synchronization for a connected device (20). In FIG. 9, arrows (a1) and (c1) indicate the transmission direction of the control signal for power synchronization, and wireless signal indicators (b1) and (d1) indicate the transmission direction of the control signal for power synchronization.

[0187] (a1) Transmission of control signals for power synchronization over a wireless network

[0188] As described, the display device (10) can be connected to communicate with a peripheral device (40) via a wireless network. Accordingly, the display device (10) can be configured to transmit a control signal for power synchronization for the connected device (20) to the peripheral device (30) via the wireless network.

[0189] To do this, the connected device (20) must also be in a state where it can be connected within the same wireless network. Upon receiving a control signal for power synchronization, the connected device (20) may be configured to change its power state accordingly. For example, if the control signal for power synchronization indicates the power to be ON, the connected device (20) may be configured to change its power state to ON.

[0190]

[0191] (b1) Transmission of control signals for power synchronization through peripheral devices

[0192] As illustrated, the display device (10) can be connected to a peripheral device (30). The peripheral device (30) may include an IR (infrared) blaster. For example, the peripheral device (30) may include a smartphone wirelessly connected to the display device (10), and the smartphone may be equipped with an IR blaster.

[0193] The display device (10) may be configured to transmit a control signal for power synchronization for the connected device (20) to a peripheral device (30). Accordingly, the peripheral device (30) may be configured to transmit a control signal for power synchronization to the connected device (20).

[0194] A connected device (20) that receives a control signal for power synchronization may be configured to change its power state accordingly. For example, if the control signal for power synchronization indicates the ON of the power, the connected device (20) may be configured to change its power state to ON.

[0195]

[0196] (c1) Transmission of control signals for power synchronization through an interface with a connected device

[0197] As illustrated, the display device (10) can be connected to a connection device (20). For example, the display device (10) can be connected to the connection device (20) via an HDMI interface.

[0198] It can be configured to transmit a control signal for power synchronization through a communication protocol for an interface between a display device (10) and a connection device (20). For example, if an HDMI interface is used, the display device (10) can transmit a control signal for synchronization to the connection device (20) using a command of the HDMI-CEC function.

[0199] A connected device (20) that receives a control signal for power synchronization may be configured to change its power state accordingly. For example, if the control signal for power synchronization indicates OFF of the power, the connected device (20) may be configured to change its power state to OFF.

[0200]

[0201] (d1) Transmission of control signals for power synchronization via remote controller

[0202] As illustrated, the display device (10) can be connected to a remote controller (1). For example, the display device (10) can be paired with the remote controller (1) via Bluetooth. The display device (10) can request the remote controller (1) to transmit a control signal on its behalf for power synchronization with the connected device (20).

[0203] If the display device (10) is not Bluetooth paired with the remote controller (1) at a time when the sending, outputting, or transmission of a control signal for power synchronization is determined, for example, at S261 or S271 of FIG. 2 or in between, the display device (10) may attempt to Bluetooth pair with the remote controller (1). Once Bluetooth pairing is completed, the display device (10) may instruct or request the remote controller (1) to send a control signal for power synchronization with the connected device (20).

[0204] Accordingly, the remote controller (1) can be configured to transmit a control signal for power synchronization to the connected device (20).

[0205] A connected device (20) that receives a control signal for power synchronization may be configured to change its power state accordingly. For example, if the control signal for power synchronization indicates OFF of the power, the connected device (20) may be configured to change its power state to OFF.

[0206]

[0207] In addition, the above four control signals or transmission methods may be assigned priority. For example, priority may be assigned in the order of a1, b1, c1, and d1. That is, a1 may be assigned the highest priority, and d1 may be assigned the lowest priority. However, the order of priority is merely an example, and priority may be assigned in other order. Additionally, as a limitation, if the HDMI-CEC function of the device (10) in FIG. 7 or FIG. 8 is disabled (OFF), c1 cannot be used and must be excluded from the priority setting and transmission method.

[0208]

[0209] In addition, when different priorities are set for four control signals or transmission methods, in the method of FIG. 3, FIG. 5, or FIG. 7, when transmitting a control signal for power synchronization (S271, S252, S243), the control signal or transmission method of the first priority may be used, and then the control signal or transmission method of the second priority may be used.

[0210] Meanwhile, as an additional control signal or transmission method, as a variation of (a1), a peripheral device (40) may be configured to receive a control signal for power synchronization for a connected device (20) from a display device (10) via a wireless network and transmit it to an external server (not shown). The external server may be configured to transmit the control signal for power synchronization to the connected device (20). In this case, the peripheral device (40) or the connected device (20) must be able to communicate with the external server.

[0211]

[0212] FIG. 10 illustrates a case where a smart speaker (11) is used instead of a remote controller (1), as previously described. The smart speaker (11) may be requested to transmit a control signal for power synchronization with a connected device (20) on its behalf, similar to (d) of the remote controller (1) described previously with reference to FIG. 9. The smart speaker (11) may be configured to transmit a control signal for power synchronization to the connected device (20).

[0213] In FIG. 10, arrows (a) and (c) indicate the transmission direction of the control signal for power synchronization, and wireless signal indicators (b) and (d) indicate the transmission direction of the control signal for power synchronization.

[0214]

[0215] FIG. 11 is a diagram illustrating the process of transmitting, sending, or sending a signal to control the power status of a device connected to a display device, utilizing a display device and a device connected thereto and a peripheral device according to the present invention.

[0216] FIG. 11 shows an embodiment in which a smart speaker (11) integrates the peripheral device (40) and the remote controller (1) of FIG. 9 described above. The smart speaker (11) of FIG. 11 may be configured to perform both the role of the peripheral device (40) of FIG. 9 and the role of the remote controller (1). For simplicity of explanation, the part described with reference to FIG. 9 will be referred to.

[0217]

[0218] Meanwhile, although not illustrated, the remote controller (1) may include the user's smartphone. The smartphone may have means to control the power status of the display device (10), such as an IR blaster. Accordingly, the smartphone may transmit a control signal to turn the power ON to the display device (10). As previously described, the display device (10) may determine the power status of the connected device (20), and if the power status of the connected device (20) is OFF, it may be configured to transmit a request for power synchronization to the smartphone. Upon receiving the request for power synchronization, the smartphone may be configured to transmit a control signal for power synchronization, that is, a control signal for turning the power ON, to the connected device (20).

[0219]

[0220] FIG. 12 shows a block diagram of a display device according to the present invention.

[0221] The display device (10) may include a memory (100) and a processor (101). Additionally, the display device (10) may include a transmission / reception interface (102). The transmission / reception interface (102) is an interface that supports wired or wireless communication and may be configured to perform functions such as receiving information from another device or device or transmitting information to another device or device. Furthermore, the display device (10) may include a display (103).

[0222] The memory (100) can store code executable by the processor (101). More specifically, the memory (100) may store a protocol or code for controlling power synchronization between the previously described display device (10) and the connected device (20).

[0223] The processor (101) may be configured to perform power synchronization with the connected device according to the protocol for power synchronization.

[0224] The processor (101) may be configured to detect whether a predetermined condition for power synchronization is satisfied as the display device is powered on.

[0225] The processor (101) may be configured to activate a power synchronization mode for a preset time as a predetermined condition is satisfied. The preset time may be 10 seconds, but the invention is not limited thereto.

[0226] The processor (101) may be configured to transmit a control signal for power synchronization. Here, the control signal for power synchronization may include a signal transmitted directly to the connected device (20) or a signal transmitted indirectly to the connected device (20).

[0227] Here, the directly transmitted signal may include a signal that the display device (10) directly transmits through an interface with the connected device (20).

[0228] Additionally, the indirectly transmitted signal may include a signal transmitted to the display device (10) via a connected device (20) in a wired or wireless manner. Accordingly, the processor (101) may be configured to transmit a request for the transmission of a control signal for power synchronization with the connected device (20) to a remote controller of the display device (10).

[0229] The processor (101) may be configured to ignore an input source switching request to the connected device (20) received from the connected device (20) while the power synchronization mode is active.

[0230] The above predetermined conditions may include cases where the home screen of the OS (operating system) of the display device is displayed on the display of the display device (10) or where the user interface of a preset app is displayed.

[0231] The above predetermined condition may include the case where the connected device is in a powered-off state.

[0232] The above predetermined conditions may include a state in which a control signal for power synchronization can be transmitted through a remote controller of the display device or a peripheral device connected to the display device, or a state in which the display device can transmit an HDMI-CEC command to the connected device.

[0233] The processor (101) may be configured to determine whether the connected device (20) is in a power-off state based on any one of the following: a video signal received from the connected device (20), information of the connected device (20) retrieved through an external connection interface of the display device (10), or power status information of the connected device (20) received from a peripheral device connected to the display device (10).

[0234] The processor (101) may be configured to check the power status of the connected device (20) after a preset time has passed since the control signal for power synchronization was transmitted.

[0235] The display device (10) of the present invention has been described above with reference to FIG. 12. Even without referring to FIG. 12, the display device (10) of the present invention may be able to perform the operation according to the present invention as described above in FIG. 1 to FIG. 11.

[0236]

[0237] In addition, as another aspect of the present invention, the operation of the above-described proposal or invention may be provided as code that can be implemented, practiced, or executed by a "computer" (a comprehensive concept including a system on chip (SoC) or (micro)processor, etc.), or as a computer-readable storage medium or computer program product that stores or contains said code, and the scope of the present invention may be extended to said code or as a computer-readable storage medium or computer program product that stores or contains said code.

[0238]

[0239] In addition, the present invention may be implemented by configuring at least two of the previously described devices or apparatuses (1, 10, 11, 40) into a single system.

[0240] For example, the display device (10) and the remote controller (11) may operate as a single system. In this case, the display device (10) may include a memory (100) configured to store a protocol for power synchronization between the connected device (20) and the display device (10), and a processor (101) configured to perform power synchronization with the connected device according to the protocol for power synchronization. Additionally, the processor (101) may be configured to detect whether a predetermined condition for power synchronization is satisfied when the display device is powered on, activate a power synchronization mode for a preset time when the predetermined condition is satisfied, and transmit a control signal or instruction for power synchronization. Additionally, the processor (101) may be configured to ignore an input switching request for the output of video data from the connected device (20) received from the connected device (20) while the power synchronization mode is activated.

[0241] Accordingly, the remote controller (11) may be configured to transmit the control signal for power synchronization in response to a request or instruction to transmit the control signal for power synchronization.

[0242] Additionally, the operation of the display device (10) or remote controller (11) described with reference to FIGS. 1 to 12 can be performed in the corresponding system.

[0243]

[0244] The detailed description of the preferred embodiments of the present invention disclosed above is provided to enable those skilled in the art to implement and practice the present invention. Although the present invention has been described with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present invention as described in the following claims. Accordingly, the present invention is not intended to be limited to the embodiments shown herein, but to be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

A display device configured to perform power synchronization with a connected device, Memory configured to store the protocol for the above power synchronization; and It includes a processor configured to perform power synchronization with the connected device according to the above-mentioned protocol for power synchronization, and The above processor is: When the power of the display device is turned on, it detects whether a predetermined condition for power synchronization is satisfied, and As the above-determined conditions are satisfied, the power synchronization mode is activated for a preset time, and a control signal for the power synchronization is transmitted. A device configured to ignore an input source switching request to the connected device received from the connected device while the power synchronization mode is enabled. In paragraph 1, the above-determined condition is: A device in which the home screen of the operating system (OS) of the display device is displayed on the display of the display device, or the user interface of a preset app is displayed. In paragraph 2, the above-determined condition is: A device in which the above-mentioned connected device is in a powered-off state. In paragraph 2, the above-determined condition is: A state in which a control signal for power synchronization can be transmitted through a remote controller of the display device or a peripheral device connected to the display device, or A device in which the display device is in a state where it can transmit HDMI-CEC (Consumer Electronics Control) commands to the connected device. In paragraph 3, the processor determines whether the connected device is in a powered-off state, Video signal received from the above-mentioned connected device, Information of the connected device retrieved through the external connection interface of the display device, or A device configured to make a determination based on any one of the power status information of the connected device received from a peripheral device connected to the display device. In paragraph 1, the control signal for power synchronization is: A device comprising a direct signal or an indirect signal transmitted from the above-mentioned display device. In paragraph 6, the above indirect signal is, A device comprising a signal transmitted through a device connected to the above-mentioned display device via a wired or wireless method. In paragraph 6, the above processor is: A device configured to transmit a request for transmission of a control signal for power synchronization with the connected device to a remote controller of the display device. In paragraph 1, the processor is: A device configured to check the power status of the connected device after a preset time has passed since the control signal for power synchronization is transmitted. A system comprising a display device configured to perform power synchronization with a connected device and a remote controller for the display device, The display device comprises a memory configured to store a protocol for power synchronization; and a processor configured to perform power synchronization with the connected device according to the protocol for power synchronization. The above processor is: When the power to the display device is turned on, it detects whether a predetermined condition for power synchronization is satisfied, and When the above-determined conditions are satisfied, the power synchronization mode is activated for a preset time, and a request or instruction for the transmission of a control signal for the power synchronization is transmitted. While the above power synchronization mode is activated, it is configured to ignore an input switching request for the output of video data from the connected device received from the connected device, and A system configured such that the remote controller transmits a control signal for power synchronization in accordance with a request or instruction to transmit a control signal for power synchronization. In Clause 10, the above-determined conditions are: A system in which the home screen of the operating system (OS) of the display device is displayed on the display of the display device, or the user interface of a preset app is displayed. In Clause 11, the above-determined conditions are: A system in which the above-mentioned connected device is in a powered-off state. In Clause 11, the above-determined conditions are: A state in which a control signal for power synchronization can be transmitted through a remote controller of the display device or a peripheral device connected to the display device, or A system in which the display device is in a state where it can transmit an HDMI-CEC command to the connected device. A method for performing power synchronization with a connected device, wherein the method is performed by a display device configured to perform power synchronization with a connected device, and A step of detecting whether a predetermined condition for power synchronization is satisfied as the power of the display device is turned on; A step of activating a power synchronization mode for a preset time as the above-determined condition is satisfied, and transmitting a control signal for the power synchronization; and A method comprising the step of ignoring a request to switch the input source to the connected device received from the connected device while the power synchronization mode is enabled. In Clause 14, the above-determined conditions are: A method in which the home screen of the operating system (OS) of the display device is displayed on the display of the display device, or the user interface of a preset app is displayed. In paragraph 15, the above-mentioned predetermined conditions are: A method in which the above-mentioned connected device is in a power-off (OFF) state. In paragraph 15, the above-mentioned predetermined conditions are: A state in which a control signal for power synchronization can be transmitted through a remote controller of the display device or a peripheral device connected to the display device, or A method in which the display device is in a state where it can transmit an HDMI-CEC command to the connected device. In paragraph 14, the control signal for the power synchronization above is: A method comprising a direct signal or an indirect signal transmitted from the above-mentioned display device. In paragraph 18, the above-mentioned indirect signal is, A method comprising a signal transmitted through a device connected to the above-mentioned display device via a wired or wireless method. A computer-readable medium storing code configured to execute a method according to any one of paragraphs 14 through 19 by a computer or processor.

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