Electronic apparatus

Abstract

This electronic apparatus according to an embodiment of the present disclosure comprises a charging board, an external device interface including a universal serial bus (USB) port, and at least one processor that switches a power state of the electronic apparatus to a power-on state when the power state of the electronic apparatus is in a power-off state while the electronic apparatus is connected to an external apparatus via the USB port and controls the charging board to supply power to the external apparatus.

Description

electronic devices

[0001] The present disclosure relates to an electronic device, and more particularly, to an electronic device that can be connected to an external device supporting USB-C DP ALT mode.

[0002] Dead battery mode can be defined as a mode in which an electronic device cannot be successfully powered on when not connected to an external power supply (AC adapter or USB PD adapter).

[0003] When connecting an external device that supports USB-C DP ALT Mode (USB-C DisplayPort ALTernate mode) to an electronic device with a USB (Universal Serial BUS)-C Dual Role Port that supports Dead Battery Mode, if the electronic device is turned off or the electronic device is turned off while the external device is connected, Power Delivery Negotiation may be completed in Dead Battery Mode.

[0004] Accordingly, the electronic device operates in a power-receiving state (sink mode), while the external device operates in a power-supplying state (source mode). Consequently, the external device unintentionally consumes power, resulting in an inconvenience of reduced operating time.

[0005] An object of the present disclosure may be to automatically boot up an electronic device and supply power to a connected external device when an external device supporting USB-C DP ALT Mode is connected, even when the electronic device is powered off.

[0006] An object of the present disclosure may be to automatically boot an electronic device when an external device supporting USB-C DP ALT Mode is connected, even when the electronic device is powered off, so that the electronic device does not receive power from the external device.

[0007] An electronic device according to one embodiment of the present disclosure may include a charging board, an external device interface having a USB (Universal Serial Bus) port, and one or more processors that control the charging board to switch the power state of the electronic device to a power-on state and supply power to the external device when the power state of the electronic device is in a power-off state while connected to an external device through the USB port.

[0008] According to another embodiment of the present disclosure, an electronic device includes a stand; and a head supported by the stand, wherein the head includes a display, a battery, a charging board for controlling charging and discharging of the battery, an external device interface having a USB (Universal Serial Bus) port, and one or more processors for controlling the charging board to switch the power state of the electronic device to a power-on state and supply power to the external device when the power state of the electronic device is in a power-off state while connected to an external device through the USB port.

[0009] A method of operating an electronic device including a charging board and an external device interface having a USB (Universal Serial Bus) port according to an embodiment of the present disclosure may include a step of switching the power state of the electronic device to a power-on state when the power state of the electronic device is in a power-off state while connected to an external device through the USB port; and a step of controlling the charging board to supply power to the external device.

[0010] According to an embodiment of the present disclosure, even if the electronic device is turned off while an external device supporting USB C-type DP ALT mode is connected to the electronic device, the problem of the external device becoming a source role and consuming power of the external device can be prevented.

[0011] Additionally, the problem of reduced usage time of external devices can be solved by preventing the problem of power consumption of external devices.

[0012] According to an embodiment of the present disclosure, when an external device supporting USB C-type DP ALT mode is connected to the electronic device, the electronic device can operate in standby mode. Accordingly, power consumption of the electronic device can be minimized, while power consumption of the external device can be prevented. Furthermore, this can also accommodate the user's need to turn off the electronic device.

[0013] FIG. 1A and FIG. 1B are drawings explaining the structure of a display device according to an embodiment of the present disclosure.

[0014] FIG. 2 is a block diagram illustrating the configuration of a display device according to one embodiment of the present disclosure.

[0015] FIG. 3 is a drawing illustrating the configuration of a display system according to one embodiment of the present disclosure.

[0016] FIG. 4 is a drawing for explaining the detailed configuration of a head according to an embodiment of the present disclosure.

[0017] FIG. 5 is a flowchart for explaining an operating method of an electronic device according to an embodiment of the present disclosure.

[0018] FIG. 6 is a flowchart detailing a process of controlling a power transmission path based on the power status of an electronic device to which an external device is connected according to an embodiment of the present disclosure.

[0019] FIG. 7 is a drawing illustrating an example of operating the electronic device in a standby mode when the electronic device is powered off while an external device supporting USB C-type DP ALT mode is connected to the electronic device according to one embodiment of the present disclosure.

[0020] FIG. 8 is a drawing illustrating in more detail the configuration of a head according to an embodiment of the present disclosure.

[0021] FIG. 9 is a diagram illustrating the V-BUS voltage / current measured at the V-BUS of the USB port according to the power off of the electronic device.

[0022] Hereinafter, embodiments related to the present invention will be described in more detail with reference to the drawings. The suffixes "module" and "part" used in the following description for components are assigned or used interchangeably solely for the convenience of writing the specification, and do not in themselves have distinct meanings or roles.

[0023] The direction indications of up (U), down (D), left (Le), right (Ri), front (F), and back (R) shown in the drawings are only for convenience of explanation, and the technical ideas disclosed in this specification are not limited thereby.

[0024] A display device according to an embodiment of the present invention is, for example, an intelligent display device that adds computer-assisted functionality to its broadcast reception function. While faithfully performing the broadcast reception function, it can also be equipped with Internet functionality and other features, providing a more user-friendly interface, such as a manual input device, touch screen, or space remote control. Furthermore, with support for wired or wireless Internet functionality, it can connect to the Internet and a computer, enabling functions such as email, web browsing, banking, or gaming. A standardized, general-purpose operating system can be used for these various functions.

[0025] Accordingly, the display device described in the present invention can perform various user-friendly functions, for example, by allowing various applications to be freely added or deleted on a general-purpose operating system kernel. More specifically, the display device can be a network TV, HBB TV, smart TV, LED TV, OLED TV, etc., and in some cases, it can also be applied to smartphones.

[0026] FIG. 1A and FIG. 1B are drawings explaining the structure of a display device according to an embodiment of the present disclosure.

[0027] Referring to FIGS. 1A and 1B, a display device (1) may include a head (10). The head (10) may include a display panel (11) that displays an image.

[0028] The head (10) may be referred to as a display (10) or a display unit (10).

[0029] The head (10) may include a first long side (LS1), a second long side (LS2) opposite the first long side (LS1), a first short side (SS1) adjacent to the first long side (LS1) and the second long side (LS2), and a second short side (SS2) opposite the first short side (SS1).

[0030] Meanwhile, for convenience of explanation, the lengths of the first and second long sides (LS1, LS2) are illustrated and described as being longer than the lengths of the first and second short sides (SS1, SS2), but it may also be possible for the lengths of the first and second long sides (LS1, LS2) to be approximately equal to the lengths of the first and second short sides (SS1, SS2).

[0031] The direction parallel to the short sides (SS1, SS2) of the head (10) may be referred to as the up-down direction or the first direction (DR1). The direction parallel to the long sides (LS1, LS2) of the head (10) may be referred to as the left-right direction or the second direction (DR2). The direction perpendicular to the short sides (SS1, SS2) and long sides (LS1, LS2) of the head (10) may be referred to as the front-back direction or the third direction (DR3).

[0032] The direction in which the head (10) displays the image may be referred to as the forward (F, z), and the opposite direction may be referred to as the backward (R). The first short side (SS1) may be referred to as the left (Le, x). The second short side (SS2) may be referred to as the right (Ri). The first long side (LS1) may be referred to as the upper side (U, y). The second long side (LS2) may be referred to as the lower side (D).

[0033] The first long side (LS1), the second long side (LS2), the first short side (SS1), and the second short side (SS2) may be referred to as edges of the head (10). The point where the first long side (LS1), the second long side (LS2), the first short side (SS1), and the second short side (SS2) meet may be referred to as a corner. The point where the first short side (SS1) and the first long side (LS1) meet may be a first corner (C1). The point where the first short side (SS1) and the second long side (LS2) meet may be a second corner (C2). The point where the second short side (SS2) and the second long side (LS2) meet may be a third corner (C3). The point where the second short side (SS2) and the first long side (LS1) meet may be a fourth corner (C4).

[0034] The display device (1) may include a stand (20, 30, 40, 50) that supports the head (10).

[0035] The stand (20, 30, 40, 50) may include a base (20), a pole (30), a swivel connector (40), and a support arm (50).

[0036] The stand (20, 30, 40, 50) can be detachably connected to the head (10).

[0037] The base (20) can be placed on the ground. The base (20) can be round or angular. A plurality of wheels (20W) can be provided on the lower surface of the base (20).

[0038] The adapter (CWc) and plug (CWa) connected to the power cable (CW) can be connected to a concentric plug that supplies external power.

[0039] The jack (CWb) of the power cable (CW) can be connected to the base (20).

[0040] The adapter (CWc) can convert external AC power into DC power and supply the converted DC power to the jack (CWb).

[0041] A battery (not shown) may be built into the base (20), pole (30), support arm (50), and / or head (10) and may be charged by power supplied through a power cable (CW). The display device (1) may be powered by the battery and operated while being separated from the power cable (CW).

[0042] The pole (30) can extend vertically from the base (20). The lower end of the pole (30) can be connected to the pole (30) adjacent to the periphery of the base (20).

[0043] The support arm (50) can extend in a direction intersecting the pole (30) and can be coupled to the upper end of the pole (30). The rotary connector (40) can be positioned between the head (10) and the support arm (50) and can be coupled to the head (10) and the support arm (50).

[0044] The head (10) can be supported by a stand (20, 30, 40, 50) and can be spaced upward from the ground.

[0045] The rotary connector (40) can rotate the head (10) up and down or left and right. When an external force is applied to the rotary connector (40), the head (10) can rotate in one or more of the up / down / left / right directions.

[0046] The rotary connector (40) and head (10) may have a detachable structure.

[0047] FIG. 2 is a block diagram illustrating the configuration of a display device according to one embodiment of the present disclosure.

[0048] Referring to FIG. 2, the display device (1) may include an image receiver (130), an external device interface (135), a memory (140), a user input interface (150), a controller (170), a wireless communication interface (173), a display (180), a speaker (185), and a power supply circuit (190).

[0049] Each of the video receiver (130), external device interface (135), memory (140), user input interface (150), controller (170), wireless communication interface (173), display (180), speaker (185), and power supply circuit (190) may be provided on the head (10). However, it is not necessary to be limited thereto, and some components may be provided on the stand (20, 30, 40, 50).

[0050] The video receiver (130) may include a tuner (131), a demodulator (132), and a network interface (133).

[0051] The tuner (131) can select a specific broadcast channel according to a channel selection command. The tuner (131) can receive a broadcast signal for the selected specific broadcast channel.

[0052] The demodulator (132) can separate the received broadcast signal into a video signal, an audio signal, and a data signal related to the broadcast program, and can restore the separated video signal, audio signal, and data signal into a form that can be output.

[0053] The external device interface (135) can receive an application or a list of applications within an adjacent external device and transmit it to the controller (170) or memory (140).

[0054] The external device interface (135) can provide a connection path between the display device (1) and the external device. The external device interface (135) can receive one or more of images and audio output from an external device connected wirelessly or wiredly to the display device (1) and transmit them to the controller (170).

[0055] The external device interface (135) may include a plurality of external input terminals. The plurality of external input terminals may include an RGB terminal, one or more HDMI (High Definition Multimedia Interface) terminals, and a component terminal.

[0056] A video signal of an external device input through an external device interface (135) can be output through a display (180). A voice signal of an external device input through an external device interface (135) can be output through a speaker (185).

[0057] An external device that can be connected to the external device interface (135) may be any one of a set-top box, a Blu-ray player, a DVD player, a game console, a sound bar, a smartphone, a PC, a USB memory, and a home theater, but this is only an example.

[0058] The external device interface (135) may be provided on one or more of the head (10) or the stand (20, 30, 40, 50).

[0059] The network interface (133) can provide an interface for connecting the display device (1) to a wired / wireless network including the Internet.

[0060] The network interface (133) can transmit or receive data to or from other users or other electronic devices via the connected network or another network linked to the connected network.

[0061] The network interface (133) can transmit some content data stored in the display device (1) to a selected user or electronic device among other users or other electronic devices pre-registered in the display device (1).

[0062] The network interface (133) can access a predetermined web page via the connected network or another network linked to the connected network. The network interface (133) can access a predetermined web page via the network and transmit or receive data with the corresponding server.

[0063] The network interface (133) can receive content or data provided by a content provider or network operator. The network interface (133) can receive content such as movies, advertisements, games, VOD, broadcast signals, and other related information provided by a content provider or network provider via a network.

[0064] The network interface (133) can receive firmware update information and update files provided by the network operator, and can transmit data to the Internet or content provider or network operator.

[0065] The network interface (133) can select and receive a desired application from among applications open to the public via a network.

[0066] The memory (140) stores a program for each signal processing and control within the controller (170), and can store signal-processed image, voice, or data signals.

[0067] The memory (140) may perform a function for temporary storage of video, audio, or data signals input from an external device interface (135) or a network interface (133), and may also store information about a specific image through a channel memory function.

[0068] The memory (140) can store an application or a list of applications input from an external device interface (135) or a network interface (133).

[0069] The display device (1) can play content files (video files, still image files, music files, document files, application files, etc.) stored in the memory (140) and provide them to the user.

[0070] The user input interface (150) can transmit a signal input by the user to the controller (170) or transmit a signal from the controller (170) to the user. For example, the user input interface (150) can receive and process control signals such as power on / off, channel selection, and screen setting from the remote control device (200) according to various communication methods such as Bluetooth, Ultra Wideband (WB), ZigBee, Radio Frequency (RF) communication, or infrared (IR) communication, or process the control signals from the controller (170) to be transmitted to the remote control device (200).

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

[0072] An image signal processed by the controller (170) can be input to the display (180) and displayed as an image corresponding to the image signal. An image signal processed by the controller (170) can be input to an external output device through an external device interface (135).

[0073] The voice signal processed by the controller (170) can be output as audio to the speaker (185). The voice signal processed by the controller (170) can be input to an external output device through the external device interface (135).

[0074] In addition, the controller (170) can control the overall operation within the display device (1).

[0075] The controller (170) can control the display device (1) by a user command or an internal program input through the user input interface (150), and can connect to a network to enable the user to download a desired application or application list into the display device (1).

[0076] The controller (170) enables the user-selected channel information, etc. to be output through a display (180) or speaker (185) together with processed video or audio signals.

[0077] The controller (170) allows a video signal or audio signal from an external device, for example, a camera or camcorder, input through the external device interface (135) to be output through the display (180) or speaker (185) in accordance with an external device video playback command received through the user input interface (150).

[0078] The controller (170) can control the display (180) to display an image, for example, a broadcast image input through a tuner (131), an external input image input through an external device interface (135), an image input through a network interface, or an image stored in a memory (140) can be controlled to be displayed on the display (180). In this case, the image displayed on the display (180) can be a still image or a moving image, and can be a 2D image or a 3D image.

[0079] The controller (170) can control the playback of content stored in the display device (1), received broadcast content, or external input content input from outside, and the content can be in various forms such as broadcast video, external input video, audio file, still image, connected web screen, and document file.

[0080] The wireless communication interface (173) can communicate with an external device through wired or wireless communication. The wireless communication interface (173) can perform short-range communication with the external device. To this end, the wireless communication interface (173) can support short-range communication using at least one of Bluetooth™, RFID (Radio Frequency Identification), Infrared Data Association (IrDA), UWB (Ultra Wideband), ZigBee, NFC (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies.

[0081] The wireless communication interface (173) can support wireless communication between the display device (1) and a wireless communication system, between the display device (1) and another display device (1), or between the display device (1) and a network in which the display device (100, or an external server) is located via a wireless area network. The wireless area network can be a wireless personal area network.

[0082] The wireless communication interface (173) can detect (or recognize) a wearable device capable of communication around the display device (1).

[0083] If the detected wearable device is a device certified to communicate with the display device (1) according to the present invention, the controller (170) can transmit at least a portion of the data processed in the display device (1) to the wearable device via the wireless communication interface (173). Accordingly, a user of the wearable device can utilize the data processed in the display device (1) via the wearable device.

[0084] The display (180) can generate a driving signal by converting a video signal, data signal, OSD signal processed by the controller (170) or a video signal, data signal, etc. received from an external device interface (135) into R, G, and B signals, respectively.

[0085] Meanwhile, since the display device (1) illustrated in FIG. 2 is merely an embodiment of the present invention, some of the illustrated components may be integrated, added, or omitted depending on the specifications of the display device (1) actually implemented.

[0086] That is, two or more components may be combined into a single component, or a single component may be subdivided into two or more components, as needed. Furthermore, the functions performed by each block are intended to illustrate embodiments of the present invention, and their specific operations or devices do not limit the scope of the present invention.

[0087] According to another embodiment of the present invention, the display device (1) may receive and play an image through a network interface (133) or an external device interface (135) without having a tuner (131) and a demodulator (132), unlike as shown in FIG. 2.

[0088] For example, the display device (1) may be implemented separately as an image processing device, such as a set-top box, for receiving contents according to broadcast signals or various network services, and a content playback device for playing contents input from the image processing device.

[0089] In this case, the operating method of the display device according to the embodiment of the present invention to be described below may be performed by any one of the display device (1) described with reference to FIG. 2, as well as an image processing device such as the separated set-top box, or a content playback device having a display (180) and a speaker (185).

[0090] FIG. 3 is a drawing illustrating the configuration of a display system according to one embodiment of the present disclosure.

[0091] Referring to FIG. 3, the display system (3) may include an electronic device (300-1) and an external device (300-2).

[0092] The electronic device (300-1) can be connected to an external device (300-2) via the Universal Serial Bus (USB) standard.

[0093] In particular, the electronic device (300-1) and the external device (300-2) can be connected via a USB B-Type port or a USB C-type port.

[0094] The external device (300-2) may be a device that supports USB-C DP ALT (USB-C DisplayPort ALTernate) mode. The USB-C DP ALT mode may be a mode in which the external device (300-2) transmits a video signal or audio signal to the electronic device (300-1) through a USB C-type port.

[0095] The external device (300-2) can receive power from the electronic device (300-1) in USB-C DP ALT (USB-C DisplayPort ALTernate) mode. The USB-C DP ALT (USB-C DisplayPort ALTernate) mode may be referred to as DP ALT mode.

[0096] An external device (300-2) can transmit one or more of a video signal or an audio signal to the electronic device (300-1).

[0097] The electronic device (300-1) can output one or more of a video signal or audio signal received from an external device (300-2).

[0098] The electronic device (300-1) may be the display device (1) illustrated in FIGS. 1A and 1B. The electronic device (300-1) may include all of the components illustrated in FIGS. 1A and 1B.

[0099] The external device (300-2) may be any one of a smartphone, a laptop, a PC, a laptop, and a smart pad.

[0100] Hereinafter, the display device (1) may be referred to as an electronic device (300-1).

[0101] FIG. 4 is a drawing for explaining the detailed configuration of a head according to an embodiment of the present disclosure.

[0102] The head (10) may include a USB port (410), a power delivery integrated chip (PDIC, 430), a system on chip (SOC, 450), a charging board (470), and a battery (490).

[0103] The USB port (410) may be included in the external device interface (135) of FIG. 2.

[0104] The USB port (410) may be a port that supports USB C-type.

[0105] PDIC (430) may be included in the controller (170) of FIG. 2 or may be a separately provided chip.

[0106] PDIC (430) can perform negotiation for power transfer between an electronic device (300-1) and an external device (300-2).

[0107] PDIC (430) can determine whether the power status of the electronic device (300-1) is turned on.

[0108] When the power state of the electronic device (300-1) is turned on, the PDIC (430) can negotiate power transfer with the external device (300-2). Depending on the result of the power transfer negotiation, the PDIC (430) can maintain the role of the electronic device (300-1) as a source role and the role of the external device (300-2) as a sink role. The SOC (450) can control the charging board (470) to supply DC power transferred from a DC adapter or DC power provided in a battery to the external device (300-2).

[0109] PDIC (430) can negotiate power transfer with external device (300-2) when the power state of electronic device (300-1) is in power off state rather than power on state. Since the power of electronic device (300-1) is off, PDIC (430) can switch the role of electronic device (300-1) to sink role and the role of external device (300-2) to source role according to the result of power transfer negotiation.

[0110] Thereafter, the PDIC (430) can execute a power-on sequence of the electronic device (300-1). The power-on sequence may be a sequence for turning on the power of the SOC (450) and resetting the power roll.

[0111] PDIC (430) can renegotiate power delivery with an external device (300-2) according to the execution of the power-on sequence.

[0112] PDIC (430) can set the role of the electronic device (300-1) as a source role and the role of the external device (300-2) as a sink role depending on the result of renegotiation of power transmission.

[0113] PDIC (430) can change the roll of the electronic device (300-1) from a sync roll to a source roll and change the roll of the external device (300-2) from a source roll to a sync roll.

[0114] The SOC (450) can control the charging board (470) so that power provided from a DC adapter or power charged in a battery is supplied to an external device (300-2).

[0115] SOC (450) may be a chip included in the controller (170) of FIG. 2.

[0116] SOC (450) can control the overall operation of the electronic device (300-1).

[0117] The charging board (470) may be a board included in the power supply circuit (190) of FIG. 2.

[0118] The charging board (470) may be a board that controls the power of the head (10).

[0119] The charging board (470) may be a board that controls charging and discharging of the battery (490).

[0120] The charging board (470) may include a charging circuit (471) and an adapter switch (473).

[0121] The charging circuit (471) can supply DC power provided from a DC adapter to components of the head (10) or to a battery (490).

[0122] The charging circuit (471) can control charging and discharging of the battery (490). The charging circuit (471) can include a battery management integrated chip (BMIC).

[0123] The adapter switch (473) can switch power received from a DC adapter or a USB PD (Power Delivery) adapter.

[0124] The adapter switch (473) can charge the battery (490) through power provided from the DC adapter when the DC adapter and the USB PD adapter are connected to the electronic device (300-1) at the same time.

[0125] The adapter switch (473) can charge the battery (490) through power provided from the USB PD adapter when the DC adapter is not connected to the electronic device (300-1) and the USB PD adapter is connected to the electronic device (300-1).

[0126] The battery (490) may be provided in the power supply circuit (190) of Fig. 2 or may be provided separately. The battery (490) may be detachable from the head (10).

[0127] The battery (490) can supply power to an external device (300-2) through discharge or to components of the head (10).

[0128] FIG. 5 is a flowchart for explaining an operating method of an electronic device according to an embodiment of the present disclosure.

[0129] The controller (170) may be referred to as one or more processors (170). The one or more processors (170) may be composed of one or more chips.

[0130] One or more processors (170) may include a PDIC (430) and an SOC (450).

[0131] In addition, it is assumed below that an external device (300-2) is connected to the electronic device (300-1) via an external device interface (135).

[0132] The external device (300-2) can be connected through the external device interface (135) of the electronic device (300-1). For example, the external device (300-2) can be connected through the USB port (410) provided in the external device interface (135) of the electronic device (300-1). The USB port (410) may be a C-type port.

[0133] One or more processors (170) can determine whether an external device (300-2) is connected based on a voltage detected through a USB port (410) provided in an external device interface (135).

[0134] PDIC (430) can determine whether an external device (300-2) is connected based on the voltage detected through the USB port (410) provided in the external device interface (135).

[0135] One or more processors (170) can determine that an external device (300-2) is connected when the voltage detected through the USB C-type port provided in the external device interface (135) is a certain voltage, and can determine that the external device (300-2) is not connected when the voltage is not a certain voltage.

[0136] Referring to FIG. 5, one or more processors (170) of an electronic device (300-1) can obtain the power status of the electronic device (300-1) (S501).

[0137] In one embodiment, one or more processors (170) can acquire the power state of the electronic device (300-1). The power state of the electronic device (300-1) can be in either a power-on state or a power-off state.

[0138] The power status of the electronic device (300-1) can indicate the power status of the SOC (450).

[0139] One or more processors (170) can determine the power status of the electronic device (300-1) based on a signal received from the remote control device (200). One or more processors (170) can determine that the power status of the electronic device (300-1) is in a power-off state based on a power-off signal received from the remote control device (200).

[0140] One or more processors (170) can determine that the power state of the electronic device (300-1) is in the power-on state based on a power-on signal received from the remote control device (200).

[0141] In one embodiment, the PDIC (430) can obtain the power status of the electronic device (300-1). If power is not supplied to the SOC (450), the PDIC (430) can determine that the electronic device (300-1) is turned off, and if power is supplied to the SOC (450), the PDIC (430) can determine that the electronic device (300-1) is turned on.

[0142] That is, the power state of the electronic device (300-1) can be determined according to the power state of the SOC (450). When the power state of the SOC (450) is a power-on state, the power state of the electronic device (300-1) can also be a power-on state, and when the power state of the SOC (450) is a power-off state, the power state of the electronic device (300-1) can also be a power-off state.

[0143] One or more processors (170) of the electronic device (300-1) can control a power transfer path between the electronic device (300-1) and an external device (300-2) based on the power state of the electronic device (300-1) (S503).

[0144] In one embodiment, one or more processors (170) may set the power role of the electronic device (300-1) as a source role and the power role of the external device (300-2) as a sink role when the power state of the electronic device (300-1) is in a power-on state.

[0145] The source roll may be a roll that supplies power, and the sink roll may be a roll that receives power.

[0146] One or more processors (170) can change the role of the electronic device (300-1) to a sync role and the role of the external device (300-2) to a source role when the power state of the electronic device (300-1) is in a power off state while an external device (300-2) is connected.

[0147] According to the prior art, the external device (300-2) has a source role and thus supplies power to the electronic device (300-1) having a sink role. Consequently, power of the external device (300-2) is unintentionally consumed, resulting in the inconvenience of a reduction in the usage time of the external device (300-2).

[0148] In an embodiment of the present disclosure, one or more processors (170) can reset the role of the electronic device (300-1) to a source role and the role of the external device (300-2) to a sync role even if the power of the electronic device (300-1) is turned off while the external device (300-2) is connected.

[0149] The PDIC (430) can perform power transfer negotiation to determine the power role between the electronic device (300-1) and the external device (300-2). The PDIC (430) can negotiate with the external device (300-2) to set the power role, whether the device can receive power, or whether the device can supply power.

[0150] Meanwhile, one or more processors (170) can determine whether the external device (300-2) is a device that supports USB-C DP ALT mode.

[0151] One or more processors (170) may receive power from the external device (300-2) if it is determined that the external device (300-2) does not support the USB-C DP ALT mode. That is, the electronic device (300-1) may be set to sync role.

[0152] FIG. 6 is a flowchart detailing a process of controlling a power transmission path based on the power status of an electronic device to which an external device is connected according to an embodiment of the present disclosure.

[0153] FIG. 6 may be an embodiment specifically explaining step S503 of FIG. 5.

[0154] In Fig. 5, it is assumed that the roll of the electronic device (300-1) is set as a source roll and the roll of the external device (300-2) is set as a sync roll.

[0155] Hereinafter, the power mode of the electronic device (300-1) can operate in either normal mode or dead battery mode.

[0156] Normal mode may be a mode in which the electronic device (300-1) supplies power to an external device (300-2).

[0157] Dead battery mode may be a mode in which an electronic device (300-1) that is not connected to an external power supply (AC adapter or USB PD adapter) cannot be powered on.

[0158] Referring to FIG. 6, the PDIC (430) of the electronic device (300-1) can determine whether the power state of the electronic device (300-1) is in the power-on state (S601).

[0159] PDIC (430) can obtain the power status of SOC (450) that controls the overall operation of the electronic device (300-1) as the power status of the electronic device (300-1).

[0160] PDIC (430) can negotiate power transfer with an external device (300-2) when the power state of the electronic device (300-1) is in the power-on state (S603).

[0161] Negotiating power delivery can be the process of determining who will supply power. Specifically, negotiating power delivery can be the process of determining which device will act as a source, supplying power, or as a sink, receiving power.

[0162] PDIC (430) can maintain the roll of the electronic device (300-1) as a source roll and the roll of the external device (300-2) as a sync roll according to the negotiation result of power transmission (S605).

[0163] Since the power of the electronic device (300-1) is turned on, the controller (170) can maintain the roll of the electronic device (300-1) as a source roll and the roll of the external device (300-2) as a sync roll.

[0164] That is, the controller (170) can operate the power mode of the electronic device (300-1) in normal mode.

[0165] SOC (450) can supply power to an external device (300-2) according to the set role (S607).

[0166] The SOC (450) can control the charging board (470) to supply DC power delivered from a DC adapter or DC power provided in a battery to an external device (300-2).

[0167] When the power state of the electronic device (300-1) is in a power-off state rather than a power-on state, the PDIC (430) can negotiate power transfer with the external device (300-2) (S609), and since the power of the electronic device (300-1) is off, the role of the electronic device (300-1) can be switched to a sync role and the role of the external device (300-2) can be switched to a source role according to the result of the power transfer negotiation (S611).

[0168] PDIC (430) can operate the electronic device (300-1) in dead battery mode when the power of the electronic device (300-1) is turned off.

[0169] After that, the PDIC (430) can execute the power-on sequence of the electronic device (300-1) (S613).

[0170] Turning on the power of the electronic device (300-1) may indicate that the power of the SOC (450) is turned on.

[0171] In one embodiment, the power-on sequence may be a sequence that powers on (or activates) the SOC (450). The power-on sequence may be a sequence in which the SOC (450) boots up as the PDIC (430) activates the SOC (450).

[0172] The PDIC (430) can be in a powered-on state even when the electronic device (300-1) is powered off. In one embodiment, the PDIC (430) can be supplied with a 5V normal voltage even when the SOC (450) is powered off. The PDIC (430) can be supplied with a 5V normal voltage from the charging board (470). The charging board (470) can supply a constant voltage to the PDIC (430) using power supplied from a DC adapter or power charged in a battery (490) so that the PDIC (430) is activated even when the SOC (450) is powered off.

[0173] PDIC (430) can transmit a signal to SOC (450) to turn on the power of SOC (450) when the power of SOC (450) is turned off while an external device (300-2) is connected.

[0174] The signal to power on the SOC (450) may be a signal indicating that a device supporting USB C-type DP ALT mode is connected.

[0175] The SOC (450) can transmit a reset command to the PDIC (430) to reset the power roll setting when the power is turned on according to a signal received from the PDIC (430).

[0176] SOC (450) can transmit a reset command to PDIC (430) via I2C communication.

[0177] That is, the SOC (450) can send a reset command to the PDIC (430) to reset the settings of the power roll as it reboots.

[0178] The SOC (450) can transmit a reset command to the PDIC (430) to reset the power roll between the electronic device (300-1) and the external device (300-2) connected to the electronic device (300-2) as the power state transitions from a power-off state to a power-on state.

[0179] PDIC (430) can renegotiate power transfer with an external device (300-2) according to the execution of the power-on sequence (S615).

[0180] The PDIC (430) can renegotiate power transfer with the external device (300-2) according to a reset command received from the SOC (450). The PDIC (430) can reset the power role of the electronic device (300-1) and the power role of the external device (300-2) according to the reset command.

[0181] PDIC (430) can set the role of the electronic device (300-1) as the source role and the role of the external device (300-2) as the sink role according to the result of renegotiation of power transmission (S617).

[0182] PDIC (430) can change the roll of the electronic device (300-1) from a sync roll to a source roll and change the roll of the external device (300-2) from a source roll to a sync roll.

[0183] SOC (450) can supply power to an external device (300-2) according to the set role (S619).

[0184] The SOC (450) can control the charging board (470) so that power provided from a DC adapter or power charged in a battery is supplied to an external device (300-2).

[0185] In this way, according to an embodiment of the present disclosure, when an external device (300-2) supporting USB C-type DP ALT mode is connected to an electronic device (300-1), even if the power of the electronic device (300-1) is turned off, the power role of the electronic device (300-1) can be maintained as a source role.

[0186] Accordingly, even if the power of the electronic device (300-1) is turned off while an external device (300-2) supporting USB C-type DP ALT mode is connected to the electronic device (300-1), the problem of the external device (300-2) becoming a source role and consuming power of the external device (300-2) can be prevented.

[0187] According to an embodiment of the present disclosure, when the power of the electronic device (300-1) is turned off while an external device (300-2) supporting USB C-type DP ALT mode is connected to the electronic device (300-1), the power role of the electronic device (300-1) and the power role of the external device (300-2) can be reset by rebooting the electronic device (300-1).

[0188] However, whenever the user turns off the power of the electronic device (300-1), the electronic device (300-1) may reboot to reset the power roll, which may result in a situation that is not in accordance with the user's intention.

[0189] For example, even if the user turns off the power of the electronic device (300-1), a situation may occur in which the screen of the display (180) turns on when the electronic device (300-1) is rebooted.

[0190] Accordingly, in an embodiment of the present disclosure, when the power of the electronic device (300-1) is turned off while an external device (300-2) supporting USB C-type DP ALT mode is connected to the electronic device (300-1), the electronic device (300-1) can operate in a standby mode that uses only the minimum power.

[0191] FIG. 7 is a drawing illustrating an example of operating the electronic device in a standby mode when the electronic device is powered off while an external device supporting USB C-type DP ALT mode is connected to the electronic device according to one embodiment of the present disclosure.

[0192] Referring to FIG. 7, the SOC (450) can turn on the power according to a signal received from the PDIC (430) and set the power mode of the electronic device (300-1) to standby mode (S701).

[0193] Standby mode may be referred to as warm standby mode.

[0194] Standby mode may be a mode in which the electronic device (300-1) uses only minimal power.

[0195] SOC (450) can turn off the screen of the display (180) under standby mode.

[0196] The SOC (450) can maintain network connectivity in standby mode. Maintaining the network connection may enable software updates, remote control, and smart home integration.

[0197] The SOC (450) can provide HDMI (High Definition Multimedia Interface)-CEC (Consumer Electronics Control) function under standby mode. The SOC (450) can control the operation of an HDMI device connected through an HDMI port provided in an external device interface (135) according to a command received from a remote control device (200).

[0198] Standby mode has the following advantages:

[0199] 1) Fast Restart: When in standby mode, the electronic device (300-1) is not completely turned off, but remains in a state where it can be quickly turned back on using minimal power. This can reduce the boot time when turning the electronic device (300-1) back on.

[0200] 2) Maintaining Network Connection: In standby mode, the electronic device (300-1) can maintain a network connection. This enables functions such as software updates, remote control, and smart home integration. For example, a user can remotely turn on or change settings of the electronic device (300-1) via an app on a smartphone.

[0201] 3) Power Consumption: Standby mode consumes slightly more power than when completely off, but still allows for energy efficiency. This is to ensure that the electronic device (300-1) can be turned back on quickly.

[0202] 4) Maintaining functionality: The electronic device (300-1) can maintain interaction with other HDMI devices through the HDMI-CEC (Consumer Electronics Control) function in standby mode. Even when the electronic device (300-1) is in standby mode, other devices can turn on or control the electronic device (300-1).

[0203] According to an embodiment of the present disclosure, when the power of the electronic device (300-1) is turned off while an external device (300-2) supporting USB C-type DP ALT mode is connected to the electronic device (300-1), the power mode of the electronic device (300-1) may be operated in a standby mode.

[0204] Accordingly, power consumption of the electronic device (300-1) can be minimized while power can be supplied to the external device (300-2). In addition, the user's need to turn off the electronic device (300-1) can be satisfied.

[0205] FIG. 8 is a drawing illustrating in more detail the configuration of a head according to an embodiment of the present disclosure.

[0206] In Fig. 8, the description of the overlapping portion with that of Fig. 4 is omitted.

[0207] Referring to FIG. 8, the head (10) may include a USB port (410), PDIC (430), SOC (450), charging board (470), battery (490), and microcomputer (491).

[0208] PDIC (430) can transmit an ALT_MODE_NOTICE message (or signal) to the H2_5VDET_ST_GP_34 pin of SOC (450) through the GPIO4 pin, indicating that the external device (300-2) supports DP ALT mode.

[0209] The microcomputer (490) can operate the electronic device (300-1) in a power protection mode. The microcomputer (490) can electrically isolate the battery (490) from the charging board (470).

[0210] FIG. 9 is a diagram illustrating the V-BUS voltage / current measured at the V-BUS of the USB port according to the power off of the electronic device.

[0211] When the power of the electronic device (300-1) is turned on while the external device (300-2) is connected to the electronic device (300-1), the power role of the electronic device (300-1) can be set to the source role, and the power role of the external device (300-2) can be set to the sync role.

[0212] In this case, a first V-BUS waveform (901) indicating that the electronic device (300-1) is operating as a source role can be observed at the USB port (410). The voltage and current of the first V-BUS waveform (901) can be 5 V and 3 A, respectively.

[0213] When the power of the electronic device (300-1) is changed from on to off while the external device (300-2) is connected to the electronic device (300-1), the power role of the electronic device (300-1) can be set to a sync role, and the power role of the external device (300-2) can be set to a source role.

[0214] In this case, a second V-BUS waveform (903) indicating that the electronic device (300-1) is operating as a source role can be observed at the USB port (410). The voltage and current of the second V-BUS waveform (903) can be 5 V and 0.5 A, respectively.

[0215] When an external device (300-2) is connected, power is supplied to the SOC (450) by a signal from the PDIC (430), and the SOC (450) can be turned on. The SOC (450) can transmit a reset command to the PDIC (430), and the PDIC (430) can renegotiate power transfer according to the reset command.

[0216] Accordingly, the power roll of the electronic device (300-1) can be switched from a sync roll to a source roll, and the power roll of the external device (300-2) can be switched from a source roll to a sync roll.

[0217] In this case, a first V-BUS waveform (901) indicating that the electronic device (300-1) is operating as a source role can be re-observed at the USB port (410).

[0218] The applicability of the embodiments of the present disclosure can be determined as follows.

[0219] When an external device (300-2) supporting DP ALT mode is connected to an electronic device (300-1), the electronic device (300-2) is turned off. In this case, if the external device (300-2) is being charged, it can be determined that the embodiment of the present disclosure has been applied.

[0220] In addition, the applicability of the embodiment of the present disclosure may be determined as follows. When an external device (300-2) supporting DP ALT mode is connected to an electronic device (300-1), the electronic device (300-2) is turned off. In this case, if the V-BUS voltage and current measured at the USB port (410) are preset voltages and currents, respectively, it may be determined that the embodiment of the present disclosure has been applied.

[0221] An electronic device (300-1) according to an embodiment of the present disclosure may include a charging board (470), an external device interface (135) having a USB (Universe Serial Bus) port (410), and one or more processors (170) that control the charging board (470) to switch the power state of the electronic device (300-1) to a power-on state and supply power to the external device (300-2) when the power state of the electronic device (300-1) is in a power-off state while connected to the external device (300-2) through the USB port (410).

[0222] The one or more processors (170) may set the power role of the electronic device to a source role and set the power role of the external device to a sink role as the power state of the electronic device is switched to the power-on state.

[0223] The electronic device (300-1) may further include a battery (490), and the one or more processors (170) may control the charging board to supply power charged in the battery to the external device.

[0224] The one or more processors (170) may include a Power Delivery Integrated Circuit (PDIC, 430) and a System On Chip (SOC, 450) that negotiate power transfer between the electronic device and the external device.

[0225] The PDIC (430) can transmit a signal to the SOC for rebooting the SOC when the power state of the electronic device is switched to a power-off state while connected to an external device through the USB port, and the SOC can transmit a reset command to the PDIC for resetting the power roll as it is rebooted based on the signal.

[0226] The above PDIC (430) can set the power role of the electronic device to the source role and the power role of the external device to the sink role according to the reset command.

[0227] The one or more processors (170) may operate the power mode of the electronic device in a standby mode when the power state of the electronic device is turned off while connected to an external device through the USB port. The standby mode is a mode that minimizes power consumption, and under the standby mode, the screen of the display provided in the electronic device may be turned off.

[0228] The above external device (300-2) may be a device that supports USB-C DP ALT (USB-C DisplayPort ALTernate) mode.

[0229] The above SOC (450) determines whether the external device is a device that supports the USB-C DP ALT (USB-C DisplayPort ALTernate) mode, and if it is determined that the external device is not a device that supports the USB-C DP ALT (USB-C DisplayPort ALTernate) mode, power can be supplied from the external device.

[0230] The PDIC (430) can transmit a signal to the SOC indicating whether the external device is a device that supports the USB-C DP ALT (USB-C DisplayPort ALTernate) mode.

[0231] The one or more processors (170) can control the charging board to supply power to the external device when the power state of the electronic device is in the power-on state while connected to the external device through the USB port.

[0232] The above PDIC (430) may be activated when the power of the electronic device is turned off.

[0233] The power state of the above electronic device may indicate the power state of the SOC.

[0234] When the power roll of the electronic device is the source roll, the first V-BUS waveform measured at the USB port may be different from the second V-BUS waveform measured at the USB port when the power roll of the external device is the source roll.

[0235] According to another embodiment of the present disclosure, an electronic device (300-1) includes a stand (20, 30, 40, 50); and a head (10) supported by the stand (20, 30, 40, 50), wherein the head (10) includes a display (180), a battery (490), a charging board (470) for controlling charging and discharging of the battery (490), an external device interface (135) having a USB (Universe Serial Bus) port (410), and one or more processors (170) for controlling the charging board (470) to switch the power state of the electronic device (300-1) to a power-on state and supply power to the external device (300-2) when the power state of the electronic device (300-1) is in a power-off state while connected to an external device (300-2) through the USB port (410).

[0236] According to one embodiment of the present disclosure, the above-described method can be implemented as processor-readable code on a medium in which a program is recorded. Examples of processor-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage devices.

[0237] The display device described above is not limited to the configuration and method of the embodiments described above, and the embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

Claims

1. In electronic devices, charging board; An external device interface having a USB (Universal Serial Bus) port; and When the power state of the electronic device is turned off while connected to an external device through the USB port, one or more processors are included to control the charging board to switch the power state of the electronic device to a power-on state and supply power to the external device. Electronic devices.

2. In paragraph 1, One or more of the above processors When the power state of the electronic device is switched to the power-on state, the power role of the electronic device is set to the source role, and the power role of the external device is set to the sink role. Electronic devices.

3. In paragraph 1, Including more batteries, One or more of the above processors Controlling the charging board to supply power charged in the battery to the external device Electronic devices.

4. In paragraph 1, One or more of the above processors A power delivery integrated circuit (PDIC) that negotiates power transfer between the electronic device and the external device, and Including System On Chip (SOC) Electronic devices.

5. In paragraph 4, The above PDIC is When the power state of the electronic device is switched to the power off state while connected to an external device through the USB port, a signal for rebooting the SOC is transmitted to the SOC, The above SOC is Sending a reset command to the PDIC to reset the power roll based on the above signal and rebooting, The above PDIC is According to the above reset command, the power role of the electronic device is set to the source role, and the power role of the external device is set to the sink role. Electronic devices.

6. In paragraph 1, One or more of the above processors When the power status of the electronic device is turned off while connected to an external device through the USB port, the power mode of the electronic device is operated in standby mode, The above standby mode is a mode that minimizes power consumption, Under the above standby mode, the screen of the display provided in the electronic device is turned off. Electronic devices.

7. In paragraph 1, The above external device Devices that support USB-C DP ALT (USB-C DisplayPort ALTernate) mode Electronic devices.

8. In paragraph 4, The above SOC is Determine whether the above external device supports USB-C DP ALT (USB-C DisplayPort ALTernate) mode, If the external device is determined not to support USB-C DP ALT (USB-C DisplayPort ALTernate) mode, power is supplied from the external device. Electronic devices.

9. In paragraph 8, The above PDIC is Transmitting a signal to the SOC indicating whether the external device supports the USB-C DP ALT (USB-C DisplayPort ALTernate) mode. Electronic devices.

10. In paragraph 4, One or more of the above processors When the power state of the electronic device is turned on while connected to an external device through the USB port, the charging board is controlled to supply power to the external device. Electronic devices.

11. In paragraph 4, The above PDIC is Activated while the above electronic device is powered off Electronic devices.

12. In paragraph 4, The power state of the above electronic device is Indicates the power status of the above SOC Electronic devices.

13. In paragraph 1, When the power roll of the electronic device is the source roll, the first V-BUS waveform measured at the USB port is different from the second V-BUS waveform measured at the USB port when the power roll of the external device is the source roll. Electronic devices.

14. In electronic devices, stand; and including a head supported by the above stand, The above head display, battery, A charging board that controls charging and discharging of the above battery, External device interface with USB (Universal Serial Bus) port and When the power state of the electronic device is turned off while connected to an external device through the USB port, one or more processors are included to control the charging board to switch the power state of the electronic device to a power-on state and supply power to the external device. Electronic devices.

15. A method of operating an electronic device including an external device interface having a charging board and a USB (Universal Serial Bus) port, When the power state of the electronic device is turned off while connected to an external device through the USB port, a step of switching the power state of the electronic device to a power-on state; and A step of controlling the charging board to supply power to the external device. How electronic devices work.

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