Image display device

Abstract

The present disclosure relates to an image display device. An image display device according to an embodiment of the present disclosure comprises: a display; an interface electrically connected to an external battery device or a mobile terminal; a power controller that controls a source mode or a sync mode of the interface; an internal battery; and a charging / discharging circuit device that has a direct-current (DC) voltage input terminal and controls a charging mode or a discharging mode of the internal battery, wherein, in the sync mode, when a DC voltage is not supplied through the DC voltage input terminal, the power controller controls receiving of a first DC voltage from the battery device or the mobile terminal through the interface, and when a second DC voltage is supplied through the DC voltage input terminal, the power controller controls supplying of a third DC voltage to the battery device or the mobile terminal through the interface on the basis of the source mode. Accordingly, a source mode operation for supplying a DC voltage to the external battery device or the mobile terminal can be performed.

Description

Video display device

[0001] The present disclosure relates to a video display device, and more particularly, to a video display device capable of performing source mode operation for supplying direct current voltage to an external battery device or mobile terminal.

[0002] A video display device is a device that displays images through a display.

[0003] Meanwhile, the video display device can receive DC voltage through an interface to which an external battery device, etc. is connected.

[0004] Meanwhile, if a battery is installed in the video display device, a DC voltage supplied from a DC power terminal or a DC voltage through an interface can be received to charge the battery.

[0005] Meanwhile, since the interface within the video display device can only operate in sync mode, it has the disadvantage of only receiving DC voltage through the interface and not being able to supply DC voltage through the interface when charging an external battery device is required.

[0006] The problem of the present disclosure is to provide a video display device capable of performing source mode operation for supplying direct current voltage to an external battery device or mobile terminal.

[0007] Another problem of the present disclosure is to provide a video display device capable of easily charging an internal battery through a sync mode.

[0008] According to one embodiment of the present disclosure for achieving the above-described problem, a video display device includes a display, an interface electrically connected to an external battery device or a mobile terminal, a power controller controlling a source mode or a sink mode of the interface, an internal battery, and a charge / discharge circuit device having a DC voltage input terminal and controlling a charge mode or a discharge mode of the internal battery, wherein the power controller, in the sink mode, controls to receive a first DC voltage from the battery device or the mobile terminal through the interface when a DC voltage is not supplied through the DC voltage input terminal, and controls to supply a third DC voltage to the battery device or the mobile terminal through the interface based on the source mode when a second DC voltage is supplied through the DC voltage input terminal.

[0009] Meanwhile, the power controller can control, in sink mode, to stop receiving the first DC voltage through the interface when the second DC voltage is supplied through the DC voltage input terminal.

[0010] Meanwhile, the power controller can control the supply of the third DC voltage to be interrupted through the interface when the supply of the second DC voltage is interrupted through the DC voltage input terminal while operating in the source mode.

[0011] Meanwhile, the charging / discharging circuit device can supply a current corresponding to the second DC voltage to the internal battery when a second DC voltage is supplied through the DC voltage input terminal.

[0012] Meanwhile, the power controller can control, in a sink mode, to receive a first level of current or a second level of current greater than the first level from the battery device or the mobile terminal through the interface based on voltage information or current information of the battery device or the mobile terminal received through the interface.

[0013] Meanwhile, the charging / discharging circuit device can supply a first level of current or a second level of current from the interface to the internal battery in sink mode.

[0014] Meanwhile, the power controller can be controlled to supply a third level of current, which is smaller than the first level, to the battery device or mobile terminal through the interface in the source mode.

[0015] Meanwhile, an image display device according to one embodiment of the present disclosure further includes a signal processing device that outputs an image signal to a display, and the interface can transmit an image signal received from a mobile terminal to the signal processing device based on a display mode.

[0016] Meanwhile, the interface can continuously transmit a video signal received from the mobile terminal to the signal processing device when a second DC voltage is supplied through the DC voltage input terminal during display mode operation.

[0017] Meanwhile, the interface may include a first port for receiving a first DC voltage in a sink mode or outputting a third DC voltage externally in a source mode, and a second port for receiving voltage information of a battery device or a mobile terminal.

[0018] Meanwhile, an image display device according to one embodiment of the present disclosure further includes a load switch electrically connected to the first port, and the load switch is turned off in a sink mode and turned on in a source mode to supply a third direct current voltage to the first port.

[0019] Meanwhile, the interface can supply a first DC voltage received through the first port in sink mode to the charging / discharging circuit device.

[0020] Meanwhile, an image display device according to one embodiment of the present disclosure further includes a DC / DC converter electrically connected to the first port, and the DC / DC converter can, in a sync mode, lower the level of a first DC voltage received through the first port and supply the lowered level DC voltage to a power controller.

[0021] Meanwhile, a video display device according to one embodiment of the present disclosure further includes a signal processing device that outputs a mode change message when a second direct current voltage is supplied through a direct current voltage input terminal during a sync mode operation, and a power controller can control switching from a sync mode to a source mode based on the mode change message.

[0022] Meanwhile, an image display device according to one embodiment of the present disclosure further includes a load switch electrically connected to the interface, and a power controller can control the load switch to be turned on based on a mode change message, thereby supplying a third DC voltage to the interface through the load switch.

[0023] According to another embodiment of the present disclosure, a video display device includes a display, an interface electrically connected to an external battery device or a mobile terminal, a power controller controlling a source mode or a sink mode of the interface, and a DC voltage input terminal, wherein the power controller controls to receive a first DC voltage from the battery device or the mobile terminal through the interface in the sink mode, and when a second DC voltage is supplied through the DC voltage input terminal during the sink mode operation, controls to stop receiving the first DC voltage through the interface, and controls to switch to the source mode and supply a third DC voltage to the battery device or the mobile terminal through the interface.

[0024] Meanwhile, a video display device according to another embodiment of the present disclosure further includes a signal processing device that outputs a mode change message when a second DC voltage is supplied through a DC voltage input terminal during a sync mode operation, and the power controller can control switching from a sync mode to a source mode based on the mode change message.

[0025] Meanwhile, a video display device according to another embodiment of the present disclosure further includes a load switch electrically connected to the interface, and a power controller can control the load switch to be turned on based on a mode change message, thereby supplying a third DC voltage to the interface through the load switch.

[0026] According to one embodiment of the present disclosure, a video display device includes a display, an interface electrically connected to an external battery device or a mobile terminal, a power controller controlling a source mode or a sink mode of the interface, an internal battery, and a charge / discharge circuit device having a DC voltage input terminal and controlling a charge mode or a discharge mode of the internal battery, wherein the power controller, in the sink mode, controls to receive a first DC voltage from the battery device or the mobile terminal through the interface when a DC voltage is not supplied through the DC voltage input terminal, and controls to supply a third DC voltage to the battery device or the mobile terminal through the interface based on the source mode when a second DC voltage is supplied through the DC voltage input terminal. Accordingly, a source mode operation for supplying a DC voltage to an external battery device or a mobile terminal can be performed.

[0027] Meanwhile, the power controller can control, in sink mode, to stop receiving the first DC voltage through the interface when a second DC voltage is supplied through the DC voltage input terminal. Accordingly, when a second DC voltage is supplied through the DC voltage input terminal, the sink mode operation can be stopped.

[0028] Meanwhile, the power controller can control the supply of the third DC voltage to be interrupted via the interface when the supply of the second DC voltage is interrupted via the DC voltage input terminal while operating in source mode. Accordingly, when the supply of the second DC voltage is interrupted via the DC voltage input terminal, the source mode operation can be interrupted.

[0029] Meanwhile, the charging / discharging circuit device can supply a current corresponding to the second DC voltage to the internal battery when a second DC voltage is supplied via the DC voltage input terminal. This enables easy charging of the internal battery through the sink mode.

[0030] Meanwhile, the power controller can control, in sync mode, to receive a first level of current or a second level of current greater than the first level from the battery device or mobile terminal through the interface based on voltage information or current information of the battery device or mobile terminal received through the interface. Accordingly, it is possible to receive currents of various levels in sync mode.

[0031] Meanwhile, the charging / discharging circuit device can supply a first level of current or a second level of current from the interface to the internal battery in sink mode. Accordingly, the internal battery can be charged based on various levels of current in sink mode.

[0032] Meanwhile, the power controller, in source mode, can control the supply of a third level of current, lower than the first level, to the battery device or mobile terminal via the interface. Accordingly, source mode operation can be performed to supply a direct current voltage to an external battery device or mobile terminal.

[0033] Meanwhile, an image display device according to one embodiment of the present disclosure further includes a signal processing device that outputs an image signal to the display, and the interface can transmit an image signal received from a mobile terminal to the signal processing device based on the display mode. Accordingly, the image signal received from the mobile terminal can be conveniently displayed on the display through the display mode.

[0034] Meanwhile, the interface can continuously transmit an image signal received from a mobile terminal to a signal processing device when a second DC voltage is supplied via the DC voltage input terminal during display mode operation. Accordingly, even when a second DC voltage is supplied via the DC voltage input terminal, the image signal received from the mobile terminal can be stably displayed on the display during display mode.

[0035] Meanwhile, the interface may include a first port for receiving a first DC voltage in sink mode or outputting a third DC voltage externally in source mode, and a second port for receiving voltage information from a battery device or a mobile terminal. Accordingly, the interface enables operation in either source mode or sink mode.

[0036] Meanwhile, a video display device according to one embodiment of the present disclosure further includes a load switch electrically connected to the first port, wherein the load switch is turned off in sink mode and turned on in source mode, thereby supplying a third DC voltage to the first port. Accordingly, in source mode, a DC voltage can be stably supplied to an external battery device or mobile terminal.

[0037] Meanwhile, the interface can supply the first DC voltage received through the first port in sink mode to the charging / discharging circuit device. This enables easy charging of the internal battery through sink mode.

[0038] Meanwhile, an image display device according to one embodiment of the present disclosure further includes a DC / DC converter electrically connected to the first port, and the DC / DC converter can, in a sync mode, lower the level of a first DC voltage received through the first port and supply the lowered level DC voltage to the power controller. Accordingly, the power controller can be stably operated based on a DC voltage from an external battery device or a mobile terminal.

[0039] Meanwhile, a video display device according to one embodiment of the present disclosure further includes a signal processing device that outputs a mode change message when a second direct current voltage is supplied through a direct current voltage input terminal during a sync mode operation, and the power controller can control switching from a sync mode to a source mode based on the mode change message. Accordingly, it is possible to perform a source mode operation for supplying a direct current voltage to an external battery device or a mobile terminal.

[0040] Meanwhile, a video display device according to one embodiment of the present disclosure further includes a load switch electrically connected to the interface, and the power controller can control the load switch to be turned on based on a mode change message, thereby supplying a third DC voltage to the interface through the load switch. Accordingly, a source mode operation for supplying a DC voltage to an external battery device or a mobile terminal can be performed.

[0041] According to another embodiment of the present disclosure, a video display device includes a display, an interface electrically connected to an external battery device or a mobile terminal, a power controller controlling a source mode or a sink mode of the interface, and a DC voltage input terminal, wherein the power controller controls to receive a first DC voltage from the battery device or the mobile terminal through the interface in the sink mode, and when a second DC voltage is supplied through the DC voltage input terminal during the sink mode operation, controls to stop receiving the first DC voltage through the interface, and controls to switch to the source mode and supply a third DC voltage to the battery device or the mobile terminal through the interface. Accordingly, a source mode operation for supplying a DC voltage to an external battery device or the mobile terminal can be performed.

[0042] Meanwhile, a video display device according to another embodiment of the present disclosure further includes a signal processing device that outputs a mode change message when a second DC voltage is supplied through a DC voltage input terminal during a sync mode operation, and the power controller can control switching from the sync mode to the source mode based on the mode change message. Accordingly, it is possible to perform a source mode operation for supplying a DC voltage to an external battery device or a mobile terminal.

[0043] Meanwhile, a video display device according to another embodiment of the present disclosure further includes a load switch electrically connected to the interface, and the power controller can control the load switch to be turned on based on a mode change message, thereby supplying a third DC voltage to the interface through the load switch. Accordingly, a source mode operation for supplying a DC voltage to an external battery device or a mobile terminal can be performed.

[0044] FIG. 1 is a drawing illustrating an image display device according to one embodiment of the present disclosure.

[0045] Figure 2 is an example of an internal block diagram of the video display device of Figure 1.

[0046] Figure 3 is an example of an internal block diagram of the signal processing device of Figure 2.

[0047] Fig. 4a is a drawing illustrating a control method of the remote control device of Fig. 2.

[0048] Figure 4b is an internal block diagram of the remote control device of Figure 2.

[0049] FIGS. 5A and 5B are drawings explaining the operation of a video display device related to the present disclosure.

[0050] FIG. 6 is a flowchart showing an operation method of an image display device according to one embodiment of the present disclosure.

[0051] Figures 7a to 7f are drawings referenced in the operation description of Figure 6.

[0052] FIG. 8 is an example of an internal block diagram of a video display device according to one embodiment of the present disclosure.

[0053] Figures 9a to 10c are drawings referenced in the operation description of Figure 8.

[0054] Hereinafter, the present disclosure will be described in more detail with reference to the drawings.

[0055] The suffixes "module" and "part" used in the following description are given solely for the convenience of writing this specification and do not impart any particularly significant meaning or role to the components themselves. Therefore, the terms "module" and "part" may be used interchangeably.

[0056] FIG. 1 is a drawing illustrating an image display device according to one embodiment of the present disclosure.

[0057] Referring to the drawing, an image display device (100) according to one embodiment of the present disclosure includes a display (180).

[0058] Meanwhile, the video display device (100) may further include a base (FTE) and a support frame (SPT) that supports between the base (FTE) and the display (180).

[0059] Meanwhile, the image display device (100) may be a movable image display device.

[0060] For example, at least one wheel is arranged at the bottom of the base (FTE) and can operate when the image display device (100) moves.

[0061] Meanwhile, the display (180) in the image display device (100) according to one embodiment of the present disclosure may be rotatable.

[0062] For example, the display (180) in the video display device (100) can be rotated from a landscape mode with a screen ratio of Wa:Wb to a portrait mode with a screen ratio of Wb:Wa.

[0063] As another example, the display (180) within the video display device (100) can be rotated from a portrait mode with a screen ratio of Wb:Wa to a landscape mode with a screen ratio of Wa:Wb.

[0064] Meanwhile, the image display device (100) according to one embodiment of the present disclosure can be connected to a peripheral electronic device such as an external battery device (500) or a mobile terminal (600) by wire or wirelessly.

[0065] For example, a video display device (100) according to one embodiment of the present disclosure can receive a video signal from a mobile terminal (600), etc.

[0066] Meanwhile, the image display device (100) according to one embodiment of the present disclosure may be equipped with a battery (BTA of FIG. 2).

[0067] Meanwhile, the power supply unit (190 in FIG. 2) within the video display device (100) can charge the battery (BTA) by supplying charging current to the battery (BTA) when the battery (BTA) is in charging mode.

[0068] Meanwhile, the video display device (100) of FIG. 1 may be a TV, monitor, etc.

[0069] Figure 2 is an example of an internal block diagram of the video display device of Figure 1.

[0070] Referring to FIG. 2, an image display device (100) according to an embodiment of the present disclosure may include an image receiving unit (105), an external device interface unit (130), a storage unit (140), a user input interface unit (150), a sensor unit (not shown), a signal processing unit (170), a display (180), and an audio output unit (185).

[0071] The video receiving unit (105) may include a tuner unit (110), a demodulation unit (120), a network interface unit (130), and an external device interface unit (130).

[0072] Meanwhile, unlike the drawing, the video receiving unit (105) may include only a tuner unit (110), a demodulator unit (120), and an external device interface unit (130). That is, it may not include a network interface unit (130).

[0073] The tuner unit (110) selects an RF broadcast signal corresponding to a channel selected by the user or all pre-stored channels among RF (Radio Frequency) broadcast signals received through an antenna (not shown). In addition, it converts the selected RF broadcast signal into an intermediate frequency signal or a baseband video or audio signal.

[0074] For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF), and if it is an analog broadcast signal, it is converted into an analog baseband video or audio signal (CVBS / SIF). That is, the tuner unit (110) can process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS / SIF) output from the tuner unit (110) can be directly input to the signal processing device (170).

[0075] Meanwhile, the tuner unit (110) may be equipped with multiple tuners to receive broadcast signals of multiple channels. Alternatively, a single tuner that simultaneously receives broadcast signals of multiple channels is also possible.

[0076] The demodulation unit (120) receives the digital IF signal (DIF) converted from the tuner unit (110) and performs a demodulation operation.

[0077] The demodulator (120) can output a stream signal (TS) after performing demodulation and channel decoding. At this time, the stream signal may be a signal in which a video signal, an audio signal, or a data signal is multiplexed.

[0078] The stream signal output from the demodulator (120) can be input to the signal processing device (170). The signal processing device (170) performs demultiplexing, image / audio signal processing, etc., and then outputs an image to the display (180) and outputs an audio to the audio output device (185).

[0079] The external device interface unit (130) can transmit or receive data to or from a connected external device (not shown), for example, a set-top box (50). To this end, the external device interface unit (130) may include an A / V input / output unit (not shown).

[0080] The external device interface unit (130) can be connected to external devices such as a DVD (Digital Versatile Disk), Blu-ray, game device, camera, camcorder, computer (laptop), set-top box, etc., via wired / wireless connection, and can also perform input / output operations with the external devices.

[0081] The A / V input / output unit can receive video and audio signals from an external device. Meanwhile, the wireless communication unit (not shown) can perform short-range wireless communication with other electronic devices.

[0082] Through this wireless communication unit (not shown), the external device interface unit (130) can exchange data with an adjacent mobile terminal (600). In particular, the external device interface unit (130) can receive device information, running application information, application images, etc. from the mobile terminal (600) in mirroring mode.

[0083] The network interface unit (135) provides an interface for connecting the video display device (100) to a wired / wireless network, including the Internet. For example, the network interface unit (135) can receive content or data provided by the Internet, a content provider, or a network operator via a network.

[0084] Meanwhile, the network interface unit (135) may include a wireless communication unit (not shown).

[0085] The storage unit (140) may store programs for each signal processing and control within the signal processing device (170), and may also store signal-processed image, voice, or data signals.

[0086] In addition, the storage unit (140) may also perform a function for temporary storage of video, audio, or data signals input to the external device interface unit (130). In addition, the storage unit (140) may store information regarding a specific broadcast channel through a channel memory function such as a channel map.

[0087] Although the storage unit (140) of FIG. 2 illustrates an embodiment in which the storage unit (140) is provided separately from the signal processing device (170), the scope of the present disclosure is not limited thereto. The storage unit (140) may be included within the signal processing device (170).

[0088] The user input interface unit (150) transmits a signal input by the user to the signal processing device (170) or transmits a signal from the signal processing device (170) to the user.

[0089] For example, a user input signal such as power on / off, channel selection, screen setting, etc. may be transmitted / received from a remote control device (200), a user input signal input from a local key (not shown) such as a power key, a channel key, a volume key, a setting value, etc. may be transmitted to a signal processing device (170), a user input signal input from a sensor unit (not shown) that senses a user's gesture may be transmitted to the signal processing device (170), or a signal from the signal processing device (170) may be transmitted to a sensor unit (not shown).

[0090] The signal processing device (170) can demultiplex an input stream or process demultiplexed signals through a tuner unit (110), a demodulator unit (120), a network interface unit (135), or an external device interface unit (130) to generate and output a signal for video or audio output.

[0091] For example, the signal processing device (170) can receive a broadcast signal or an HDMI signal received from the image receiving unit (105), perform signal processing based on the received broadcast signal or HDMI signal, and output a signal-processed image signal.

[0092] An image signal processed by a signal processing device (170) may be input to a display (180) and displayed as an image corresponding to the image signal. In addition, an image signal processed by a signal processing device (170) may be input to an external output device through an external device interface unit (130).

[0093] The voice signal processed in the signal processing device (170) can be output as sound to the audio output unit (185). In addition, the voice signal processed in the signal processing device (170) can be input to an external output device through the external device interface unit (130).

[0094] Although not illustrated in FIG. 2, the signal processing device (170) may include a demultiplexing unit, an image processing unit, etc. That is, the signal processing device (170) may perform various signal processing operations and, accordingly, may be implemented in the form of a system on chip (SOC). This will be described later with reference to FIG. 3.

[0095] In addition, the signal processing device (170) can control the overall operation within the video display device (100). For example, the signal processing device (170) can control the tuner unit (110) to select (tune) an RF broadcast corresponding to a channel selected by a user or a pre-stored channel.

[0096] In addition, the signal processing device (170) can control the image display device (100) by a user command or internal program input through the user input interface unit (150).

[0097] Meanwhile, the signal processing device (170) can control the display (180) to display an image. At this time, the image displayed on the display (180) may be a still image or a moving image, and may be a 2D image or a 3D image.

[0098] Meanwhile, the signal processing device (170) can cause a predetermined object to be displayed within an image displayed on the display (180). For example, the object can be at least one of a connected web screen (newspaper, magazine, etc.), an EPG (Electronic Program Guide), various menus, widgets, icons, still images, videos, and text.

[0099] Meanwhile, the signal processing device (170) can recognize the user's location based on an image captured from a camera (not shown). For example, the distance (z-axis coordinate) between the user and the image display device (100) can be determined. In addition, the x-axis coordinate and y-axis coordinate within the display (180) corresponding to the user's location can be determined.

[0100] The display (180) generates a driving signal by converting a video signal, data signal, OSD signal, control signal, etc. processed by the signal processing device (170) or a video signal, data signal, control signal, etc. received from the external device interface unit (130).

[0101] Meanwhile, the display (180) is configured as a touch screen and can be used as an input device in addition to an output device.

[0102] The audio output unit (185) receives a signal processed by the signal processing device (170) and outputs it as voice.

[0103] A camera unit (not shown) photographs a user. The camera unit (not shown) may be implemented with a single camera, but is not limited thereto, and may also be implemented with multiple cameras. Image information captured by the camera unit (not shown) may be input to a signal processing device (170).

[0104] The signal processing device (170) can detect the user's gesture based on an image captured from a shooting unit (not shown) or a signal detected from a sensor unit (not shown), or a combination thereof.

[0105] The power supply unit (190) supplies power to the entire video display device (100).

[0106] In particular, the power supply unit (190) can supply power to a signal processing unit (170) that can be implemented in the form of a system on chip (SOC), a display (180) for displaying images, and an audio output unit (185) for audio output.

[0107] Specifically, the power supply (190) may be equipped with a converter that converts the level of the input voltage.

[0108] For example, the power supply (190) may have an ac / dc converter and a dc / dc converter when the input voltage is an alternating voltage.

[0109] As another example, the power supply (190) may have a dc / dc converter when the input voltage is a direct current voltage.

[0110] Meanwhile, the power supply unit (190) is equipped with a battery (BTA).

[0111] The remote control device (200) transmits user input to the user input interface unit (150). To this end, the remote control device (200) may use Bluetooth, RF (Radio Frequency) communication, IR (Infrared) communication, UWB (Ultra Wideband), ZigBee, etc. In addition, the remote control device (200) may receive video, audio, or data signals output from the user input interface unit (150) and display or output the same as audio on the remote control device (200).

[0112] Meanwhile, the above-described video display device (100) may be a digital broadcast receiver capable of receiving fixed or mobile digital broadcasts.

[0113] Meanwhile, the block diagram of the image display device (100) illustrated in FIG. 2 is a block diagram for one embodiment of the present disclosure. Each component of the block diagram may be integrated, added, or omitted depending on the specifications of the image display device (100) actually implemented. That is, two or more components may be combined into one component, or one component may be subdivided into two or more components, as needed. In addition, the functions performed by each block are intended to explain the embodiment of the present disclosure, and the specific operations or devices thereof do not limit the scope of the present disclosure.

[0114] Figure 3 is an example of an internal block diagram of the signal processing device of Figure 2.

[0115] Referring to the drawings, a signal processing device (170) according to an embodiment of the present disclosure may include a demultiplexing unit (310), an image processing unit (320), a processor (330), and an audio processing unit (370). In addition, a data processing unit (not shown) may be further included.

[0116] The demultiplexer (310) demultiplexes the input stream. For example, when MPEG-2 TS is input, it can be demultiplexed to separate it into video, audio, and data signals, respectively. Here, the stream signal input to the demultiplexer (310) may be a stream signal output from the tuner (110), the demodulator (120), or the external device interface (130).

[0117] The image processing unit (320) can perform signal processing on an input image. For example, the image processing unit (320) can perform image processing on an image signal demultiplexed from the demultiplexing unit (310).

[0118] To this end, the image processing unit (320) may include an image decoder (325), a scaler (335), an image quality processing unit (635), an image encoder (not shown), a graphics processing unit (340), a frame rate conversion unit (350), and a formatter (360).

[0119] The video decoder (325) decodes the demultiplexed video signal, and the scaler (335) scales the resolution of the decoded video signal so that it can be output on the display (180).

[0120] The video decoder (325) can be equipped with decoders of various standards. For example, it can be equipped with an MPEG-2, H.264 decoder, a 3D video decoder for color images and depth images, a decoder for multi-view images, etc.

[0121] The scaler (335) can scale an input video signal that has been decoded by a video decoder (325), etc.

[0122] For example, the scaler (335) can upscale when the size or resolution of the input image signal is small, and downscale when the size or resolution of the input image signal is large.

[0123] The image quality processing unit (635) can perform image quality processing on an input image signal for which image decoding has been completed in the image decoder (325), etc.

[0124] For example, the image quality processing unit (635) may perform noise removal processing of an input image signal, expand the resolution of the gradation of an input image signal, perform image resolution enhancement, perform signal processing based on high dynamic range (HDR), vary the frame rate, or perform image quality processing corresponding to panel characteristics, particularly the panel.

[0125] The graphic processing unit (340) generates an OSD signal based on user input or on its own. For example, based on a user input signal, a signal for displaying various information in the form of graphics or text on the screen of the display (180) may be generated. The generated OSD signal may include various data such as the user interface screen of the image display device (100), various menu screens, widgets, and icons. In addition, the generated OSD signal may include a 2D object or a 3D object.

[0126] In addition, the graphic processing unit (340) can generate a pointer that can be displayed on the display based on a pointing signal input from the remote control device (200). In particular, such a pointer can be generated by the pointing signal processing unit, and the graphic processing unit (240) can include such a pointing signal processing unit (not shown). Of course, the pointing signal processing unit (not shown) can also be provided separately rather than being included within the graphic processing unit (240).

[0127] The frame rate converter (FRC) (350) can convert the frame rate of an input video. Meanwhile, the frame rate converter (350) can also output the video as is without a separate frame rate conversion.

[0128] Meanwhile, the formatter (360) can change the format of an input video signal into a video signal for display on a display and output it.

[0129] In particular, the formatter (360) can change the format of the video signal to correspond to the display panel.

[0130] Meanwhile, the formatter (360) can also change the format of the video signal.

[0131] The processor (330) can control the overall operation within the image display device (100) or the signal processing device (170).

[0132] For example, the processor (330) can control the tuner (110) to select (tuning) an RF broadcast corresponding to a channel selected by the user or a pre-stored channel.

[0133] In addition, the processor (330) can control the image display device (100) by a user command or internal program input through the user input interface unit (150).

[0134] Additionally, the processor (330) can perform data transmission control with the network interface unit (135) or the external device interface unit (130).

[0135] Additionally, the processor (330) can control the operation of the demultiplexing unit (310), the image processing unit (320), etc., within the signal processing device (170).

[0136] Meanwhile, the audio processing unit (370) within the signal processing device (170) can perform audio processing of the demultiplexed audio signal. To this end, the audio processing unit (370) can be equipped with various decoders.

[0137] Additionally, the audio processing unit (370) within the signal processing device (170) can process bass, treble, volume control, etc.

[0138] A data processing unit (not shown) within a signal processing device (170) can perform data processing on a demultiplexed data signal. For example, if the demultiplexed data signal is an encoded data signal, it can be decoded. The encoded data signal may be electronic program guide information (EPG) information that includes broadcast information such as the start time and end time of a broadcast program broadcast on each channel.

[0139] Meanwhile, the block diagram of the signal processing device (170) illustrated in FIG. 3 is a block diagram for one embodiment of the present disclosure. Each component of the block diagram may be integrated, added, or omitted depending on the specifications of the signal processing device (170) actually implemented.

[0140] In particular, the frame rate conversion unit (350) and formatter (360) may be provided separately from the image processing unit (320).

[0141] Meanwhile, a signal processing device (170) according to an embodiment of the present disclosure may further include a neural network processor (333) for learning processing, etc.

[0142] Fig. 4a is a drawing illustrating a control method of the remote control device of Fig. 2.

[0143] As shown in (a) of FIG. 4a, a pointer (205) corresponding to a remote control device (200) is displayed on the display (180).

[0144] The user can move or rotate the remote control device (200) up and down, left and right ((b) of FIG. 4a), and forward and backward ((c) of FIG. 4a). The pointer (205) displayed on the display (180) of the video display device corresponds to the movement of the remote control device (200). Since the pointer (205) of this remote control device (200) is moved and displayed according to the movement in 3D space, as shown in the drawing, it can be called a space remote control or a 3D pointing device.

[0145] Figure 4a (b) illustrates that when a user moves the remote control device (200) to the left, the pointer (205) displayed on the display (180) of the video display device also moves to the left in response.

[0146] Information about the movement of the remote control device (200) detected by the sensor of the remote control device (200) is transmitted to the image display device. The image display device can calculate the coordinates of the pointer (205) from the information about the movement of the remote control device (200). The image display device can display the pointer (205) to correspond to the calculated coordinates.

[0147] FIG. 4A (c) illustrates a case where, while pressing a specific button within the remote control device (200), the user moves the remote control device (200) away from the display (180). As a result, the selection area within the display (180) corresponding to the pointer (205) may be zoomed in and displayed in an enlarged manner. Conversely, when the user moves the remote control device (200) closer to the display (180), the selection area within the display (180) corresponding to the pointer (205) may be zoomed out and displayed in a reduced manner. Meanwhile, when the remote control device (200) moves away from the display (180), the selection area may be zoomed out, and when the remote control device (200) moves closer to the display (180), the selection area may be zoomed in.

[0148] Meanwhile, when a specific button within the remote control device (200) is pressed, recognition of up, down, left, and right movements may be excluded. That is, when the remote control device (200) moves away from or toward the display (180), up, down, left, and right movements may not be recognized, and only forward and backward movements may be recognized. When a specific button within the remote control device (200) is not pressed, only the pointer (205) moves in accordance with the up, down, left, and right movements of the remote control device (200).

[0149] Meanwhile, the movement speed or movement direction of the pointer (205) can correspond to the movement speed or movement direction of the remote control device (200).

[0150] Figure 4b is an internal block diagram of the remote control device of Figure 2.

[0151] Referring to the drawing, the remote control device (200) may include a wireless communication unit (425), a user input unit (435), a sensor unit (440), an output unit (450), a power supply unit (460), a storage unit (470), and a control unit (480).

[0152] The wireless communication unit (425) transmits and receives signals with any one of the image display devices according to the embodiments of the present disclosure described above. Among the image display devices according to the embodiments of the present disclosure, one image display device (100) will be described as an example.

[0153] In this embodiment, the remote control device (200) may be equipped with an RF module (421) capable of transmitting and receiving signals with the image display device (100) in accordance with RF communication standards. In addition, the remote control device (200) may be equipped with an IR module (423) capable of transmitting and receiving signals with the image display device (100) in accordance with IR communication standards.

[0154] In this embodiment, the remote control device (200) transmits a signal containing information about the movement of the remote control device (200) to the image display device (100) through the RF module (421).

[0155] In addition, the remote control device (200) can receive a signal transmitted by the image display device (100) through the RF module (421). In addition, the remote control device (200) can transmit commands for power on / off, channel change, volume change, etc. to the image display device (100) through the IR module (423) as needed.

[0156] The user input unit (435) may be configured as a keypad, a button, a touch pad, or a touch screen. The user can input a command related to the image display device (100) to the remote control device (200) by operating the user input unit (435). If the user input unit (435) has a hard key button, the user can input a command related to the image display device (100) to the remote control device (200) by pushing the hard key button. If the user input unit (435) has a touch screen, the user can input a command related to the image display device (100) to the remote control device (200) by touching a soft key of the touch screen. In addition, the user input unit (435) may be equipped with various types of input means that the user can operate, such as a scroll key or a jog key, and the present embodiment does not limit the scope of the present disclosure.

[0157] The sensor unit (440) may be equipped with a gyro sensor (441) or an acceleration sensor (443). The gyro sensor (441) may sense information regarding the movement of the remote control device (200).

[0158] For example, a gyro sensor (441) can sense information about the operation of a remote control device (200) based on the x, y, and z axes. An acceleration sensor (443) can sense information about the movement speed of the remote control device (200). Meanwhile, a distance measuring sensor can be further provided, thereby sensing the distance to the display (180).

[0159] The output unit (450) can output a video or audio signal corresponding to the operation of the user input unit (435) or to a signal transmitted from the video display device (100). Through the output unit (450), the user can recognize whether the user input unit (435) is being operated or whether the video display device (100) is being controlled.

[0160] For example, the output unit (450) may be equipped with an LED module (451) that lights up when the user input unit (435) is operated or a signal is transmitted and received with the image display device (100) through the wireless communication unit (425), a vibration module (453) that generates vibration, an audio output module (455) that outputs audio, or a display module (457) that outputs audio.

[0161] The power supply unit (460) supplies power to the remote control device (200). The power supply unit (460) can reduce power waste by stopping the power supply when the remote control device (200) is not moved for a predetermined period of time. The power supply unit (460) can resume the power supply when a predetermined key provided on the remote control device (200) is operated.

[0162] The storage unit (470) can store various types of programs, application data, etc. required for the control or operation of the remote control device (200). If the remote control device (200) wirelessly transmits and receives signals through the image display device (100) and the RF module (421), the remote control device (200) and the image display device (100) transmit and receive signals through a predetermined frequency band. The control unit (480) of the remote control device (200) can store and refer to information regarding the frequency band through which signals can be wirelessly transmitted and received between the remote control device (200) and the paired image display device (100), etc., in the storage unit (470).

[0163] The control unit (480) controls all matters related to the control of the remote control device (200). The control unit (480) can transmit a signal corresponding to a predetermined key operation of the user input unit (435) or a signal corresponding to the movement of the remote control device (200) sensed by the sensor unit (440) to the image display device (100) via the wireless communication unit (425).

[0164] The user input interface unit (150) of the video display device (100) may be equipped with a wireless communication unit (151) capable of wirelessly transmitting and receiving signals with a remote control device (200), and a coordinate value calculation unit (415) capable of calculating the coordinate value of a pointer corresponding to the operation of the remote control device (200).

[0165] The user input interface unit (150) can wirelessly transmit and receive signals to and from the remote control device (200) via the RF module (412). In addition, the user input interface unit (150) can receive signals transmitted by the remote control device (200) according to the IR communication standard via the IR module (413).

[0166] The coordinate value calculation unit (415) can calculate the coordinate values ​​(x, y) of the pointer (205) to be displayed on the display (170) by correcting hand shake or error from a signal corresponding to the operation of the remote control device (200) received through the wireless communication unit (151).

[0167] A transmission signal of a remote control device (200) input to a video display device (100) through a user input interface unit (150) is transmitted to a signal processing device (170) of the video display device (100). The signal processing device (170) can determine information about the operation and key operation of the remote control device (200) from the signal transmitted from the remote control device (200) and control the video display device (100) in response thereto.

[0168] As another example, the remote control device (200) can calculate pointer coordinate values ​​corresponding to the operation and output them to the user input interface unit (150) of the image display device (100). In this case, the user input interface unit (150) of the image display device (100) can transmit information about the received pointer coordinate values ​​to the signal processing device (170) without a separate hand shake or error correction process.

[0169] In addition, as another example, the coordinate value calculation unit (415) may be provided inside the signal processing device (170) rather than the user input interface unit (150), unlike in the drawing.

[0170] FIGS. 5A and 5B are drawings explaining the operation of a video display device related to the present disclosure.

[0171] FIG. 5a illustrates an example of the operation of a video display device related to the present disclosure.

[0172] Referring to the drawings, the video display device (100x) related to the present disclosure may be equipped with an interface (510) electrically connected to an external battery device (500), a power controller (520), a charging / discharging circuit device (530), and an internal battery (BTA).

[0173] Meanwhile, the interface (510) and the power controller (520) can be mounted on the main circuit board (MDx).

[0174] Meanwhile, FIG. 5a illustrates that a direct current voltage (DC-IN) is not supplied through a direct current voltage input terminal (532) in a charge / discharge circuit device (530).

[0175] Meanwhile, the interface (510) can receive the first current (IPHx) through the interface (510) based on a sink mode.

[0176] Meanwhile, the charge / discharge circuit device (530) can control the internal battery (BTA) to be charged based on the first current (IPHx) input through the interface (510) in a state where the direct current voltage (DC-IN) is not supplied through the direct current voltage input terminal (532).

[0177] FIG. 5b illustrates an example of the operation of a video display device related to the present disclosure.

[0178] Referring to the drawing, Fig. 5b illustrates that, unlike Fig. 5a, a direct current voltage (DC-IN) is supplied through a direct current voltage input terminal (532).

[0179] The image display device (100x) related to the present disclosure of FIG. 5b can control the internal battery (BTA) to be charged based on the second current (IPHy) input through the interface (510) when a direct current voltage (DC-IN) is supplied through the direct current voltage input terminal (532) during the sync mode operation.

[0180] That is, the charge / discharge circuit device (530) in the drawing can control the internal battery (BTA) to be charged based on the second current (IPHy) input through the interface (510) when a direct current voltage (DC-IN) is supplied through the direct current voltage input terminal (532) during sink mode operation.

[0181] As shown in Fig. 5b, even if a DC voltage (DC-IN) is supplied through a DC voltage input terminal (532), the sink mode is continuously performed, so there is a disadvantage in that a DC current or DC voltage cannot be supplied to an external battery device (500) through the interface (510).

[0182] Accordingly, in this disclosure, a method is proposed in which the interface (510) operates in a source mode in addition to a sink mode. This is described with reference to FIG. 6 and below.

[0183] FIG. 6 is a flowchart showing an operation method of an image display device according to one embodiment of the present disclosure.

[0184] Referring to the drawing, a power controller (620) in a video display device (100) according to one embodiment of the present disclosure determines whether an external battery device (500) or a mobile terminal (600) is connected (S610).

[0185] For example, the power controller (620) within the video display device (100) can receive information from an external battery device (500) or mobile terminal (600) through the interface (610).

[0186] The information at this time may include voltage information or current information of an external battery device (500) or mobile terminal (600).

[0187] Specifically, the power controller (620) within the video display device (100) receives voltage information or current information from an external battery device (500) or a mobile terminal (600) through an interface (610), and, based on the voltage information or current information, determines that the external battery device (500) or the mobile terminal (600) is connected.

[0188] Next, the power controller (620) in the video display device (100) according to one embodiment of the present disclosure determines the operation mode of the interface (610) (S615).

[0189] For example, the power controller (620) within the video display device (100) may determine to operate in a sync mode for receiving voltage or current from an external battery device (500) or mobile terminal (600) when the received voltage information or current information is above a reference level.

[0190] As another example, the power controller (620) within the video display device (100) may determine to operate in a source mode for supplying voltage or current to an external battery device (500) or mobile terminal (600) when the received voltage information or current information is below the second reference level.

[0191] The second reference level at this time may be less than the reference level, but, conversely, the second reference level may be equal to the reference level.

[0192] Next, the power controller (620) in the image display device (100) according to one embodiment of the present disclosure can determine whether the interface (610) is determined to be in sync mode (S620), and if so, control to operate in sync mode (S620).

[0193] For example, in the sink mode, the power controller (620) controls to receive a first DC voltage (Vm in FIG. 7a) or a first DC current (IPHm in FIG. 7a) from the battery device (500) or the mobile terminal (600) through the interface (610) when the DC voltage is not supplied through the DC voltage input terminal (632).

[0194] Accordingly, the charge / discharge circuit device (630) can receive a first DC voltage (Vm) or a first DC current through the interface (610) and control the charging of the internal battery (BTA) based on the first DC voltage (Vm) or the first DC current.

[0195] That is, the charge / discharge circuit device (630) receives a first DC voltage (Vm) or a first DC current through the interface (610), and can control the internal battery (BTA) to be charged according to the charging mode based on the first DC voltage (Vm) or the first DC current. Accordingly, the internal battery (BTA) can be easily charged through the sink mode.

[0196] Next, the power controller (620) or signal processing device (170) in the image display device (100) according to one embodiment of the present disclosure determines whether a DC voltage is supplied through the DC voltage input terminal (632) during the sink mode operation (S630), and if so, controls the interface (610) to operate in the source mode (S635).

[0197] For example, the power controller (620) or signal processing device (170) in the video display device (100) can control the reception of the first DC voltage (Vm) or the first DC current to be stopped through the interface (610) when the second DC voltage (DC-IN) or the second DC current corresponding to the second DC voltage is supplied through the DC voltage input terminal (632).

[0198] In addition, the power controller (620) or signal processing device (170) within the video display device (100) can control the source mode to be performed after the reception of the first DC voltage (Vm) or the first DC current is stopped.

[0199] That is, the power controller (620) or signal processing device (170) within the image display device (100) controls, based on the source mode, to supply a third DC voltage (Vn) or a third DC current corresponding to the third DC voltage to the battery device (500) or the mobile terminal (600) through the interface (610) after the reception of the first DC voltage (Vm) or the first DC current is stopped. Accordingly, it is possible to perform a source mode operation for supplying a DC voltage to an external battery device (500) or a mobile terminal (600).

[0200] Meanwhile, the power controller (620) or signal processing device (170) within the image display device (100) can control the supply of the third DC voltage (Vn) or the third DC current to be stopped through the interface (610) when the supply of the second DC voltage (DC-IN) or the second DC current is stopped through the DC voltage input terminal (632) while operating in the source mode. Accordingly, when the supply of the second DC voltage (DC-IN) or the second DC current is stopped through the DC voltage input terminal (632), the source mode operation can be stopped.

[0201] Figures 7a to 7f are drawings referenced in the operation description of Figure 6.

[0202] FIG. 7a illustrates an example of a sync mode operation of an interface of a video display device according to an embodiment of the present disclosure.

[0203] Referring to the drawings, a video display device (100) according to an embodiment of the present disclosure includes a display (180), an interface (610) electrically connected to an external battery device (500), a power controller (620) that controls the operation of the interface (610), an internal battery (BTA), and a charge / discharge circuit device (630) that controls a charge mode or a discharge mode of the internal battery (BTA).

[0204] Meanwhile, the image display device (100) according to the embodiment of the present disclosure may further include a signal processing device (170) that outputs an image signal to the display (180).

[0205] Meanwhile, the interface (610), the power controller (620), and the signal processing device (170) can be mounted on the main circuit board (MD).

[0206] Meanwhile, the charge / discharge circuit device (630) is separated from the main circuit board (MD) and includes a direct current voltage input terminal (632).

[0207] Meanwhile, the charge / discharge circuit device (630) may further include a second interface (634) that supplies voltage or current to the internal battery (BTA) in a charge mode of the internal battery (BTA) and receives voltage or current in a discharge mode of the internal battery (BTA), and a switching device (636) that performs switching to supply voltage or current from the interface (610) to the second interface (634).

[0208] Meanwhile, FIG. 7a illustrates that a direct current voltage (DC-IN) is not supplied through a direct current voltage input terminal (632) in a charge / discharge circuit device (630).

[0209] Meanwhile, the power controller (620) can receive voltage information or current information of the battery device (500) through the interface (610) when the battery device (500) is connected.

[0210] In addition, the power controller (620) can control the interface (610) to operate in a sync mode when the voltage information or current information of the battery device (500) is above a reference level.

[0211] Meanwhile, the power controller (620) controls the interface (610) to receive the first DC voltage (Vm) or the first DC current (IPHm) corresponding to the first DC voltage (Vm) when the second DC voltage (DC-IN) is not supplied through the DC voltage input terminal (632) in the sink mode.

[0212] Meanwhile, the interface (610) can receive a first DC voltage (Vm) or a first DC current (IPHm) corresponding to the first DC voltage (Vm) from the battery device (500) based on a sink mode, since the DC voltage (DC-IN) is not supplied through the DC voltage input terminal (632).

[0213] And, the charge / discharge circuit device (630) can control the switching device (636) to turn on and charge the internal battery (BTA) based on the first DC voltage (Vm) from the interface (610) or the first DC current (IPHm) corresponding to the first DC voltage (Vm).

[0214] FIG. 7b illustrates another example of sync mode operation of an interface of a video display device according to an embodiment of the present disclosure.

[0215] Referring to the drawing, unlike FIG. 7a, the charge / discharge circuit device (630) exemplifies that a second direct current voltage (DC-IN) is supplied through a direct current voltage input terminal (632).

[0216] Meanwhile, the power controller (620) can control the reception of the first DC voltage (Vm) or the first DC current (IPHm) to be stopped through the interface (610) when the second DC voltage (DC-IN) is supplied through the DC voltage input terminal (632) in the sink mode. Accordingly, when the second DC voltage (DC-IN) is supplied through the DC voltage input terminal (632), the sink mode operation can be stopped.

[0217] Meanwhile, the charging / discharging circuit device (630) can turn off the switching device (636) according to the interruption of reception of the first DC voltage (Vm) or the first DC current (IPHm).

[0218] Meanwhile, the charge / discharge circuit device (630) can be controlled to charge the internal battery (BTA) based on a second DC voltage (DC-IN) input through a DC voltage input terminal (632) or a second DC current corresponding to the second DC voltage (DC-IN).

[0219] Specifically, the charge / discharge circuit device (630) can supply a second direct current corresponding to the second direct current voltage (DC-IN) to the internal battery (BTA) when the second direct current voltage (DC-IN) is supplied through the direct current voltage input terminal (632). Accordingly, the internal battery (BTA) can be stably charged in response to the supply of the direct current voltage (DC-IN) input through the direct current voltage input terminal (632).

[0220] FIG. 7c illustrates an example of a source mode operation of an interface of a video display device according to an embodiment of the present disclosure.

[0221] Referring to the drawing, the power controller (620) controls, based on the source mode, to supply a third DC voltage (Vn) or a third DC current (IPHn) corresponding to the third DC voltage (Vn) to the battery device (500) through the interface (610) when a second DC voltage (DC-IN) or a second DC current is supplied through the DC voltage input terminal (632). Accordingly, it is possible to perform a source mode operation for supplying a DC voltage to an external battery device (500).

[0222] At this time, the level of the third DC current in the source mode may be lower than the level of the first DC current in the sink mode.

[0223] Meanwhile, while operating in source mode, a second DC voltage (DC-IN) or a second DC current is supplied through the DC voltage input terminal (632), so that the charge / discharge circuit device (630) can supply the second DC voltage (DC-IN) or the second DC current to the internal battery (BTA). Accordingly, the internal battery (BTA) can be stably charged in response to the supply of the DC voltage (DC-IN) input through the DC voltage input terminal (632).

[0224] FIG. 7d illustrates another example of source mode operation of an interface of a video display device according to an embodiment of the present disclosure.

[0225] Referring to the drawing, the power controller (620) can control the supply of the third DC voltage (Vn) or the third DC current (IPHn) to be stopped through the interface (610) when the supply of the second DC voltage (DC-IN) or the second DC current is stopped through the DC voltage input terminal (632) while operating in the source mode. Accordingly, when the supply of the second DC voltage (DC-IN) is stopped through the DC voltage input terminal (632), the source mode operation can be stopped.

[0226] Meanwhile, while operating in source mode, the supply of the second DC voltage (DC-IN) or the second DC current is interrupted through the DC voltage input terminal (632), so that the charge / discharge circuit device (630) can stop the charging mode of the internal battery (BTA).

[0227] Meanwhile, the charge / discharge circuit device (630) switches the internal battery (BTA) to a discharge mode when an image display is required on the display (180) during the interruption of the source mode and the interruption of the charging mode of the internal battery (BTA), and operates the signal processing device (170) and the display (180) based on the DC voltage or the current from the internal battery (BTA). Accordingly, stable image display is enabled.

[0228] FIG. 7e illustrates an example of a display mode operation of an interface of a video display device according to an embodiment of the present disclosure.

[0229] Referring to the drawing, when a mobile terminal (600) is connected to an interface (610), the interface (610) can operate in display mode based on setting input or mode selection, etc.

[0230] That is, the power controller (620) can receive display mode related information from the mobile terminal (600) and control the interface (610) to operate in display mode based on the received display mode related information.

[0231] In response to this, the interface (610) can receive a video signal (Svd) from the mobile terminal (600) in display mode and transmit the video signal (Svd) to the signal processing device (170).

[0232] Meanwhile, the signal processing device (170) can perform signal processing on the image signal (Svd) and control the image corresponding to the signal-processed image signal (Svd) to be displayed on the display (180).

[0233] Meanwhile, the power controller (620) or signal processing device (170) can control the display mode to continue to be performed when a second DC voltage (DC-IN) or a second DC current is supplied through the DC voltage input terminal (632) during display mode operation.

[0234] FIG. 7f illustrates another example of display mode operation of an interface of a video display device according to an embodiment of the present disclosure.

[0235] Referring to the drawing, as in FIG. 7e, when a mobile terminal (600) is connected to an interface (610), the interface (610) can operate in display mode based on setting input or mode selection, etc.

[0236] However, unlike FIG. 7e, there is a difference in that when operating in display mode, the supply of the second DC voltage (DC-IN) or the second DC current is interrupted through the DC voltage input terminal (632).

[0237] Meanwhile, the power controller (620) or signal processing device (170) can control the display mode to continue to be performed even if the supply of the second DC voltage (DC-IN) or the second DC current is interrupted through the DC voltage input terminal (632) during display mode operation.

[0238] That is, even if the supply of the second direct current voltage (DC-IN) or the second direct current is interrupted, the interface (610), in the display mode, receives the image signal (Svd) from the mobile terminal (600), transmits the image signal (Svd) to the signal processing device (170), and the signal processing device (170) performs signal processing on the image signal (Svd) so that an image corresponding to the signal-processed image signal (Svd) can be controlled to be displayed on the display (180). Accordingly, stable image display becomes possible.

[0239] FIG. 8 is an example of an internal block diagram of a video display device according to one embodiment of the present disclosure.

[0240] Referring to the drawings, an image display device (100) according to one embodiment of the present disclosure includes a display (180), an interface (610) electrically connected to an external battery device (500) or a mobile terminal (600), a power controller (620) that controls a source mode or a sink mode of the interface (610), an internal battery (BTA), and a charge / discharge circuit device (630) that controls a charge mode or a discharge mode of the internal battery (BTA).

[0241] Meanwhile, the interface (610) according to one embodiment of the present disclosure can operate in any one of a sink mode, a source mode, and a display mode.

[0242] For example, when operating in a sync mode, the interface (610) can receive a first DC voltage (Vm) or a first DC current (IPHm) corresponding to the first DC voltage (Vm) from an external battery device (500) or a mobile terminal (600).

[0243] Meanwhile, the interface (610), when operating in source mode, can supply a third DC voltage (Vn) or a third DC current (IPHn) corresponding to the third DC voltage (Vn) to an external battery device (500) or a mobile terminal (600).

[0244] Meanwhile, the interface (610) can receive a video signal (Svd) from the mobile terminal (600) when operating in display mode.

[0245] Meanwhile, the interface (610) may include a USB-C type interface.

[0246] For example, the interface (610) may include a first port (PT1) that receives a first DC voltage (Vm) in a sink mode or outputs a third DC voltage (Vn) to the outside in a source mode, and a second port (PT2) that receives voltage information of a battery device (500) or a mobile terminal (600).

[0247] Meanwhile, the first port (PT1) can be connected to the VBUS line, and the second port (PT2) can be connected to the CC1 / 2 line.

[0248] Meanwhile, the interface (610) may further include a third port (PT3) connected to a separate second bus (SBU1 / 2) line in addition to the first bus VBUS line.

[0249] Meanwhile, the interface (610) may further include a fourth port (PT4) and a fifth port (PT5) for receiving a video signal (Svd) from a mobile terminal (600) or transmitting a video signal to the mobile terminal (600) when operating in display mode.

[0250] Meanwhile, the fourth port (PT4) can be connected to the TX1 / RX1 line, and the fifth port (PT5) can be connected to the TX2 / RX2 line.

[0251] Meanwhile, the interface (610) may further include a fourth port (PT4) and a fifth port (PT5) for receiving a video signal (Svd) from a mobile terminal (600) or transmitting a video signal to the mobile terminal (600) when operating in display mode.

[0252] Meanwhile, the fourth port (PT4) can be connected to the TX1 / RX1 line, and the fifth port (PT5) can be connected to the TX2 / RX2 line.

[0253] Meanwhile, the interface (610) may further include a sixth port (PT6) for a USB 2.0 interface.

[0254] Meanwhile, the sixth port (PT6) can be connected to the USB D+ / D- lines.

[0255] Meanwhile, the charging / discharging circuit device (630) has a direct current voltage input terminal (632).

[0256] Meanwhile, the charge / discharge circuit device (630) may further include a second interface (634) that supplies voltage or current to the internal battery (BTA) in a charge mode of the internal battery (BTA) and receives voltage or current in a discharge mode of the internal battery (BTA), and a switching device (636) that performs switching to supply voltage or current from the interface (610) to the second interface (634).

[0257] Meanwhile, the image display device (100) according to one embodiment of the present disclosure may further include a signal processing device (170) that outputs an image signal to the display (180).

[0258] Meanwhile, the image display device (100) according to one embodiment of the present disclosure may further include a dc / dc converter (644) electrically connected to the first port (PT1).

[0259] Meanwhile, the dc / dc converter (644) can be connected between the first port (PT1) of the interface (610) and the switch (647).

[0260] Meanwhile, the dc / dc converter (644) can, in sink mode, lower the level of the first dc voltage (Vm) received through the first port (PT1) and supply the lowered level dc voltage (5V_TYPE-C) to the power controller (620) via the switch (647).

[0261] For example, the dc / dc converter (644) can lower the level of the first direct current voltage (Vm) of approximately 5 to 20 V and supply a voltage of approximately 5 V to the power controller (620). Accordingly, the power controller (620) can be stably operated based on the direct current voltage from the external battery device (500) or the mobile terminal (600).

[0262] Meanwhile, the switch (647) may supply a level-converted DC voltage (5V_NORMAL) based on the internal battery (BTA) to the power controller (620) when the first DC voltage (Vm) is not supplied through the interface (610).

[0263] Meanwhile, the DC voltage (5V_TYPE-C) output from the DC / DC converter (644) can be input to the signal processing device (170).

[0264] At this time, the signal processing device (170) can receive a USB-C_CHG_DET signal related to the sink mode operation based on the DC voltage (5V_TYPE-C).

[0265] That is, the signal processing device (170) can determine that the operation is in sink mode when the level of the USB-C_CHG_DET signal corresponding to the DC voltage (5V_TYPE-C) is high.

[0266] Meanwhile, the power controller (620) is electrically connected to a plurality of ports (PT2 to PT5) of the interface (610) and can receive signals from the plurality of ports (PT2 to PT5) of the interface (610).

[0267] For example, the power controller (620) can receive voltage information or current information of the battery device (500) or the mobile terminal (600) through the second port (PT2) of the interface (610).

[0268] As another example, the power controller (620) can receive a video signal (Svd) through the fourth port (PT4) or the fifth port (PT5) of the interface (610) in display mode and transmit the video signal (Svd) to the signal processing device (170).

[0269] Meanwhile, the power controller (620) may have multiple ports for signal transmission or reception with the signal processing device (170).

[0270] For example, the power controller (620) may be provided with a VMON port for receiving a TYPE-C_VBUS signal, an MGPIO2 port for transmitting a TYPE-C_CC_DET signal, a GPIO4 port for transmitting an ALT_MODE_NOTICE signal, an I2C_EN / GPIO10 port for transmitting a 5V_USB-C_EN signal, an I2C_INT / GPIO9 port for transmitting a 65W_USB-C_EN signal, an IMON port for transmitting a 100W_USB-C_EN signal, a LOC_PWR_MON port for transmitting a TYPE-C_VBUS_DISCHARGE signal, etc.

[0271] Meanwhile, the TYPE-C_VBUS signal can correspond to a signal input to the first port (PT1) of the interface (610) in source mode.

[0272] Meanwhile, the power controller (620) can output a high level 5V_USB-C_EN signal in source mode, and the load switch (645) can be turned on based on the 5V_USB-C_EN signal.

[0273] Meanwhile, the power controller (620) can determine the first sync mode operation or the second sync mode operation among the sync modes based on voltage information or current information of the battery device (500) or the mobile terminal (600).

[0274] For example, the power controller (620) may output a high-level 65W_USB-C_EN signal for a first sink mode operation based on 65W (20V / 3.25A), or a high-level 100W_USB-C_EN signal for a second sink mode operation based on 100W (20V / 5A), based on voltage information or current information of the battery device (500) or the mobile terminal (600).

[0275] Meanwhile, the power controller (620) can output a high level TYPE-C_VBUS_DISCHARGE signal to discharge TYPE-C_VBUS.

[0276] Meanwhile, between the power controller (620) and the signal processing device (170), a converter (642) for converting a display signal into an HDMI signal in display mode may be further included.

[0277] Meanwhile, the signal processing device (170) can output a reset signal (RESET_N) to reset the converter (642).

[0278] Meanwhile, the image display device (100) according to one embodiment of the present disclosure may further include a load switch (645) electrically connected to the first port (PT1) of the interface (610).

[0279] Meanwhile, the image display device (100) according to one embodiment of the present disclosure may further include a barrier diode connected between the load switch (645) and the first port (PT1) of the interface (610).

[0280] Meanwhile, the load switch (645) is turned off in the sink mode. Accordingly, the barrier diode and the first port (PT1) of the interface (610) are electrically isolated.

[0281] Meanwhile, the load switch (645) is turned on in source mode and can supply a third DC voltage (Vn) to the first port (PT1) based on the conduction of the barrier diode. Accordingly, in source mode, a DC voltage can be stably supplied to an external battery device (500) or a mobile terminal (600).

[0282] Meanwhile, the interface (610) can supply the first DC voltage (Vm) received through the first port (PT1) in the sink mode to the charge / discharge circuit device (630). Accordingly, the internal battery (BTA) can be easily charged through the sink mode.

[0283] Meanwhile, the charge / discharge circuit device (630) may include a DC voltage input terminal (632), a second interface (634) that supplies voltage or current to the internal battery (BTA) in a charge mode of the internal battery (BTA) and receives voltage or current in a discharge mode of the internal battery (BTA), and a switching device (636) that performs switching to supply voltage or current from the interface (610) to the second interface (634).

[0284] Meanwhile, the charge / discharge circuit device (630) can supply a voltage of approximately 13 V to the interface (652) of the main circuit board (MD) when a second direct current voltage (DC-IN) is supplied through the direct current voltage input terminal (632).

[0285] Meanwhile, the charge / discharge circuit device (630) can transmit a high-level power signal (POWER_ACD) to a switching element (653) within the main circuit board (MD) when a second direct current voltage (DC-IN) is supplied through the direct current voltage input terminal (632).

[0286] Meanwhile, the main circuit board (MD) may further include a signal receiving device (656) including a first diode to which a 65W_USB-C_EN signal is applied and a second diode to which a 100W_USB-C_EN signal is applied, a second switching element (658) connected to the signal receiving device (656), and a switching element (653) having one end connected between the signal receiving device (656) and the second switching element (658).

[0287] For example, when a second DC voltage (DC-IN) is supplied through a DC voltage input terminal (632), a high-level power signal (POWER_ACD) is input to the switching element (653), and the switching element (653) is turned off. Accordingly, the second switching element (658) is also turned off.

[0288] Accordingly, the 20V_VBUS_ON / OFF signal output from the second switching element (658) becomes a low level, and the switching device (636) in the charging / discharging circuit device (630) is turned off based on the 20V_VBUS_ON / OFF signal at a low level.

[0289] Accordingly, when the second DC voltage (DC-IN) is supplied through the DC voltage input terminal (632), the supply of the first DC voltage (Vm) or the first DC current (IPHm) to the charge / discharge circuit device (630) is stopped due to the switching device (636) being turned off.

[0290] As another example, when a second DC voltage (DC-IN) is supplied through a DC voltage input terminal (632), a low-level power signal (POWER_ACD) is input to a switching element (653), and the switching element (653) is turned on.

[0291] Meanwhile, depending on the operation of the sink mode, if either the 65W_USB-C_EN signal or the 100W_USB-C_EN signal is at a high level, the signal receiving device (656) is turned on and the second switching element (658) is also turned on.

[0292] Accordingly, the 20V_VBUS_ON / OFF signal output from the second switching element (658) becomes a high level, and the switching device (636) in the charging / discharging circuit device (630) is turned on based on the high level 20V_VBUS_ON / OFF signal.

[0293] Finally, when the second DC voltage (DC-IN) is not supplied through the DC voltage input terminal (632), the first DC voltage (Vm) or the first DC current (IPHm) is supplied to the charge / discharge circuit device (630) due to the switching device (636) being turned on. Accordingly, the internal battery (BTA) can be stably charged.

[0294] Figures 9a to 10c are drawings referenced in the operation description of Figure 8.

[0295] Figure 9a (a) is a diagram illustrating the level of each signal when the second direct current voltage (DC-IN) is supplied and when the supply is interrupted.

[0296] Referring to the drawing, when the second direct current voltage (DC-IN) is supplied, the level of the power signal (POWER_ACD) becomes a high level, the 20V_VBUS_ON / OFF signal becomes a low level, and the switching device (636) within the charge / discharge circuit device (630) is turned off. Accordingly, the sink mode is stopped and the source mode can be performed.

[0297] Meanwhile, when the second direct current voltage (DC-IN) is not supplied, the level of the power signal (POWER_ACD) becomes low, the 20V_VBUS_ON / OFF signal becomes high, and the switching device (636) within the charge / discharge circuit device (630) is turned on. Accordingly, the sink mode can be performed.

[0298] Figure 9a (b) is a drawing exemplifying the first sink mode and the second sink mode among the sink modes.

[0299] Referring to the drawing, the power controller (620) can operate in a sync mode based on voltage information or current information of the battery device (500) or the mobile terminal (600).

[0300] In this sync mode, the USB-C_CHG_DET signal corresponding to the DC voltage (5V_TYPE-C) output from the dc / dc converter (644) electrically connected to the first port (PT1) may be at a high level.

[0301] Meanwhile, the power controller (620) can be controlled to receive a first level of current or a second level of current greater than the first level from the battery device (500) or the mobile terminal (600) through the interface (610) in a sync mode based on voltage information or current information of the battery device (500) or the mobile terminal (600) received through the interface (610).

[0302] Meanwhile, the power controller (620) may determine to operate in either the first sync mode or the second sync mode among the sync modes based on voltage information or current information of the battery device (500) or the mobile terminal (600). Accordingly, it is possible to receive currents of various levels in the sync mode.

[0303] For example, the power controller (620) can control the operation in the first sync mode when the voltage information or current information of the battery device (500) or the mobile terminal (600) is equal to or greater than a reference level and less than a first set level, and can control the operation in the second sync mode when the voltage information or current information of the battery device (500) or the mobile terminal (600) is equal to or greater than a reference level and less than a first set level.

[0304] That is, the power controller (620) can output a high-level 65W_USB-C_EN signal through I2C_INT / GPIO9 when in the first sink mode, and the level of a low-level 100W_USB-C_EN signal through the IMON / GPIO8 port can be a low level.

[0305] Accordingly, in the first sink mode, the first port (PT1) of the interface (610) receives a first level of current from the battery device (500), and the charge / discharge circuit device (630) receives the first level of current from the interface (610) and supplies the first level of current to the internal battery (BTA). The first level at this time may be 0.1 C-rate.

[0306] Meanwhile, the power controller (620) can output a low-level 65W_USB-C_EN signal through I2C_INT / GPIO9 when in the second sink mode, and the level of a high-level 100W_USB-C_EN signal through the IMON / GPIO8 port can be a low level.

[0307] Accordingly, in the first sink mode, the first port (PT1) of the interface (610) receives a second level of current greater than the first level from the battery device (500), and the charge / discharge circuit device (630) receives the second level of current from the interface (610) and supplies the second level of current to the internal battery (BTA). The second level at this time may be 0.4 C-rate.

[0308] Figure 9b is a drawing referenced in the description of the operation of the power controller and signal processing device.

[0309] Referring to the drawing, in the first sink mode, when the second direct current voltage (DC-IN) is not supplied, the USB-C_CHG_DET signal is at a high level, the level of the 100W_USB-C_EN signal output through the IMON / GPIO8 port is at a low level, the level of the 65W_USB-C_EN signal output through the I2C_INT / GPIO9 is at a high level, and the level of the power signal (POWER_ACD) may be at a low level. At this time, the signal processing device (170) does not output a mode change message (PR_Swap).

[0310] Meanwhile, in the second sink mode, when the second direct current voltage (DC-IN) is not supplied, the USB-C_CHG_DET signal is at a high level, the level of the 100W_USB-C_EN signal output through the IMON / GPIO8 port is at a high level, the level of the 65W_USB-C_EN signal output through the I2C_INT / GPIO9 is at a low level, and the level of the power signal (POWER_ACD) may be at a low level. At this time, the signal processing device (170) does not output a mode change message (PR_Swap).

[0311] Meanwhile, the signal processing device (170) can output a mode change message (PR_Swap) when a second direct current voltage (DC-IN) is supplied through the direct current voltage input terminal (632) during the first sink mode or the second sink operation.

[0312] For example, in the first sink mode and when the second direct current voltage (DC-IN) is supplied, the USB-C_CHG_DET signal is at a high level, the level of the 100W_USB-C_EN signal output through the IMON / GPIO8 port is at a low level, the level of the 65W_USB-C_EN signal output through the I2C_INT / GPIO9 is at a high level, and the level of the power signal (POWER_ACD) may be at a high level. At this time, the signal processing device (170) outputs a mode change message (PR_Swap).

[0313] As another example, in the second sink mode, when the second direct current voltage (DC-IN) is not supplied, the USB-C_CHG_DET signal is at a high level, the level of the 100W_USB-C_EN signal output through the IMON / GPIO8 port is at a high level, the level of the 65W_USB-C_EN signal output through the I2C_INT / GPIO9 is at a low level, and the level of the power signal (POWER_ACD) may be at a high level. At this time, the signal processing device (170) outputs a mode change message (PR_Swap).

[0314] Meanwhile, the power controller (620) can control switching from the first sink mode or the second sink mode to the source mode based on the mode change message (PR_Swap).

[0315] Meanwhile, the power controller (620) can control the load switch (645) to be turned on based on the mode change message (PR_Swap), thereby supplying the third DC voltage (Vn) or the third DC current (IPHn) corresponding to the third DC voltage (Vn) to the interface (610) through the load switch (645). Accordingly, it is possible to perform a source mode operation for supplying the DC voltage to an external battery device (500) or a mobile terminal (600).

[0316] Meanwhile, the power controller (620) can be controlled to supply a current of a third level (IPHn) smaller than the first level (IPHm) to the battery device (500) or the mobile terminal (600) through the interface (610) in the source mode.

[0317] For example, the first level of the first direct current (IPHm) in the first sink mode may be approximately 3.25 A, the second level of the first direct current (IPHm) in the second sink mode may be approximately 5 A, and the third level of the third direct current (IPHn) in the source mode may be approximately 3 A.

[0318] Accordingly, it is possible to stably perform source mode operation for supplying DC voltage to an external battery device (500) or mobile terminal (600).

[0319] Figure 10a is a drawing for reference in explaining the operation when the second DC voltage is not supplied through the DC voltage input terminal during operation in sink mode.

[0320] Referring to the drawing, the power controller (620) controls, in the sink mode, to receive a first DC voltage (Vm) or a first DC current (IPHm) corresponding to the first DC voltage (Vm) from the battery device (500) or the mobile terminal (600) through the interface (610) when the second DC voltage (DC-IN) is not supplied through the DC voltage input terminal (632).

[0321] Meanwhile, the power controller (620) can control, in a sync mode, to receive a first level of current or a second level of current greater than the first level from the battery device (500) or the mobile terminal (600) through the interface (610) based on voltage information or current information of the battery device (500) or the mobile terminal (600) received through the interface (610). Accordingly, it becomes possible to receive currents of various levels in the sync mode.

[0322] Meanwhile, the charge / discharge circuit device (630) can supply a first level of current or a second level of current from the interface (610) to the internal battery (BTA) in sink mode. Accordingly, the internal battery (BTA) can be charged based on various levels of current in sink mode.

[0323] Figure 10b is a drawing for reference in explaining the operation when a second DC voltage is supplied through a DC voltage input terminal during operation in sink mode.

[0324] Referring to the drawing, the power controller (620) can control, in the sink mode, to stop receiving the first DC voltage (Vm) through the interface (610) when the second DC voltage (DC-IN) is supplied through the DC voltage input terminal (632). Accordingly, when the second DC voltage (DC-IN) is supplied through the DC voltage input terminal (632), the sink mode operation can be stopped.

[0325] Meanwhile, the charge / discharge circuit device (630) can supply a current corresponding to the second direct current voltage (DC-IN) to the internal battery (BTA) when the second direct current voltage (DC-IN) is supplied through the direct current voltage input terminal (632) in the sink mode. Accordingly, the internal battery (BTA) can be easily charged through the sink mode.

[0326] Figure 10c is a drawing referenced in the description of the operation of the source mode.

[0327] Referring to the drawing, the power controller (620) controls, based on the source mode, to supply a third DC voltage (Vn) to the battery device (500) or the mobile terminal (600) through the interface (610) when a second DC voltage (DC-IN) is supplied through the DC voltage input terminal (632) in the source mode. Accordingly, it is possible to perform a source mode operation for supplying a DC voltage to an external battery device (500) or the mobile terminal (600).

[0328] Meanwhile, the power controller (620) can control the supply of the third DC voltage (Vn) or the third DC current (IPHn) corresponding to the third DC voltage (Vn) to be interrupted through the interface (610) when the supply of the second DC voltage (DC-IN) is interrupted through the DC voltage input terminal (632) while operating in the source mode. Accordingly, when the supply of the second DC voltage (DC-IN) is interrupted through the DC voltage input terminal (632), the source mode operation can be interrupted.

[0329] Meanwhile, the interface (610) can transmit an image signal received from the mobile terminal (600) to the signal processing device (170) based on the display (180) mode. Accordingly, the image signal received from the mobile terminal (600) can be easily displayed on the display (180) through the display (180) mode.

[0330] Meanwhile, the interface (610) can continuously transmit an image signal received from the mobile terminal (600) to the signal processing device (170) when a second direct current voltage (DC-IN) is supplied through the direct current voltage input terminal (632) during display (180) mode operation.

[0331] Accordingly, even if a second DC voltage (DC-IN) is supplied through the DC voltage input terminal (632), the image signal received from the mobile terminal (600) can be stably displayed on the display (180) through the display (180) mode.

[0332] Meanwhile, a video display device (100) according to another embodiment of the present disclosure includes a display (180), an interface (610) electrically connected to an external battery device (500) or a mobile terminal (600), a power controller (620) that controls a source mode or a sink mode of the interface (610), and a DC voltage input terminal (632).

[0333] Meanwhile, the power controller (620) according to another embodiment of the present disclosure controls to receive a first DC voltage (Vm) from a battery device (500) or a mobile terminal (600) through an interface (610) in a sink mode, and when a second DC voltage (DC-IN) is supplied through a DC voltage input terminal (632) during a sink mode operation, controls to stop receiving the first DC voltage (Vm) through the interface (610), and switches to a source mode to supply a third DC voltage (Vn) to the battery device (500) or the mobile terminal (600) through the interface (610). Accordingly, it becomes possible to perform a source mode operation for supplying a DC voltage to an external battery device (500) or a mobile terminal (600).

[0334] Although the preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above, and various modifications may be made by a person skilled in the art to which the present invention pertains without departing from the gist of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present disclosure.

Claims

1. Display; An interface electrically connected to an external battery device or mobile terminal; A power controller controlling the source mode or sink mode of the above interface; internal battery; A charging / discharging circuit device having a DC voltage input terminal and controlling a charging mode or a discharging mode of the internal battery; The above power controller, In the above sink mode, when the DC voltage is not supplied through the DC voltage input terminal, the first DC voltage is controlled to be received from the battery device or the mobile terminal through the interface, An image display device that controls a third DC voltage to be supplied to the battery device or the mobile terminal through the interface based on the source mode when a second DC voltage is supplied through the DC voltage input terminal.

2. In paragraph 1, The above power controller, An image display device that controls, in the above sink mode, the reception of the first DC voltage to be stopped through the interface when the second DC voltage is supplied through the DC voltage input terminal.

3. In paragraph 1, The above power controller, An image display device that controls the supply of the third DC voltage to be stopped through the interface when the supply of the second DC voltage is stopped through the DC voltage input terminal while operating in the source mode.

4. In paragraph 2, The above charging and discharging circuit device, An image display device that supplies current corresponding to the second DC voltage to the internal battery when the second DC voltage is supplied through the DC voltage input terminal.

5. In paragraph 1, The above power controller, An image display device that controls, in the sync mode, to receive a first level of current or a second level of current greater than the first level from the battery device or the mobile terminal through the interface based on voltage information or current information of the battery device or the mobile terminal received through the interface.

6. In paragraph 5, The above charging and discharging circuit device, An image display device that supplies the first level of current or the second level of current from the interface to the internal battery in the above sink mode.

7. In paragraph 5, The above power controller, An image display device that controls, in the above source mode, to supply a third level of current, which is lower than the first level, to the battery device or the mobile terminal through the interface.

8. In paragraph 1, It further includes a signal processing device that outputs a video signal to the above display; The above interface is, A video display device that transmits a video signal received from the mobile terminal to the signal processing device based on the display mode.

9. In paragraph 8, The above interface is, An image display device that continuously transmits an image signal received from the mobile terminal to the signal processing device when the second DC voltage is supplied through the DC voltage input terminal during the display mode operation.

10. In paragraph 1, The above interface is, A first port for receiving the first DC voltage in the sink mode or for outputting the third DC voltage externally in the source mode; An image display device comprising a second port for receiving voltage information of the battery device or the mobile terminal.

11. In paragraph 10, Further comprising a load switch electrically connected to the first port; The above load switch, A display device that is turned off in the sink mode and turned on in the source mode, and supplies the third DC voltage to the first port.

12. In paragraph 10, The above interface is, An image display device that supplies the first DC voltage received through the first port in the above sink mode to the charging / discharging circuit device.

13. In paragraph 10, Further comprising a dc / dc converter electrically connected to the first port; The above dc / dc converter is, An image display device that, in the above sink mode, lowers the level of the first DC voltage received through the first port and supplies the lowered level DC voltage to the power controller.

14. In paragraph 1, Further comprising a signal processing device that outputs a mode change message when the second DC voltage is supplied through the DC voltage input terminal during the sink mode operation; The above power controller, A display device that controls switching from the sink mode to the source mode based on the above mode change message.

15. In paragraph 14, Further comprising a load switch electrically connected to the above interface; The above power controller, An image display device that controls the load switch to be turned on based on the mode change message, and supplies the third DC voltage to the interface through the load switch.

16. Display; An interface electrically connected to an external battery device or mobile terminal; A power controller controlling the source mode or sink mode of the above interface; including a DC voltage input terminal; The above power controller, In the above sink mode, control is provided to receive a first direct current voltage from the battery device or the mobile terminal through the interface, An image display device that, during the sink mode operation, controls to stop receiving the first DC voltage through the interface when a second DC voltage is supplied through the DC voltage input terminal, switches to the source mode, and supplies a third DC voltage to the battery device or the mobile terminal through the interface.

17. In paragraph 16, Further comprising a signal processing device that outputs a mode change message when the second DC voltage is supplied through the DC voltage input terminal during the sink mode operation; The above power controller, A display device that controls switching from the sink mode to the source mode based on the above mode change message.

18. In paragraph 17, Further comprising a load switch electrically connected to the above interface; The above power controller, An image display device that controls the load switch to be turned on based on the mode change message, and supplies the third DC voltage to the interface through the load switch.

Images