Image display device

Abstract

The invention relates to an image display device. An image display device according to an embodiment of the present invention comprises: a display; the interface is electrically connected with an external battery device or a mobile terminal; the power controller is used for controlling a pull current mode or a sink current mode of the interface; an internal battery; and a charging / discharging circuit device which has a DC voltage input terminal and controls a charging mode or a discharging mode of the internal battery. In the sink current mode, if the supply of the DC voltage through the DC voltage input terminal is stopped, the power controller controls to receive a first DC voltage from the battery device or the mobile terminal through the interface; if the second DC voltage is supplied through the DC voltage input terminal, the power controller controls to supply a third DC voltage to the battery device or the mobile terminal through the interface based on the pull current mode. As a result, it is possible to perform a pull current mode operation for supplying a DC voltage to an external battery device or a mobile terminal.

Description

TECHNICAL FIELD

[0001] The present invention relates to an image display apparatus, and more particularly, to an image display apparatus capable of performing a sink current mode operation for supplying a direct current voltage to an external battery device or a mobile terminal. BACKGROUND

[0002] An image display apparatus is an apparatus that displays an image through a display.

[0003] On the other hand, the image display apparatus can receive a direct current voltage through an interface connected to an external battery device or the like.

[0004] On the other hand, in a case where a battery is provided in the image display apparatus, in order to charge the battery, a direct current voltage supplied from a direct current power terminal or a direct current voltage supplied through the interface can be received.

[0005] On the other hand, since the interface in the image display apparatus operates only in a sink current mode, there is a disadvantage that a direct current voltage can be received only through the interface, and a direct current voltage cannot be supplied through the interface when an external battery device needs to be charged. SUMMARY

[0006] An object of the present invention is to provide an image display apparatus capable of performing a sink current mode operation for supplying a direct current voltage to an external battery device or a mobile terminal.

[0007] Another object of the present invention is to provide an image display apparatus capable of conveniently charging an internal battery through a sink current mode.

[0008] An image display apparatus according to an embodiment for solving the above object includes a display, an interface electrically connected to an external battery device or a mobile terminal, a power controller controlling a sink current mode or a sink current mode of the interface, an internal battery, and a charge and discharge circuit device having a direct current voltage input terminal, controlling a charge mode or a discharge mode of the internal battery; in the sink current mode, if a supply of a direct current voltage through the direct current voltage input terminal is stopped, the power controller is controlled to receive a first direct current voltage from the battery device or the mobile terminal through the interface, and if a second direct current voltage is supplied through the direct current voltage input terminal, the power controller is controlled to supply a third direct current voltage to the battery device or the mobile terminal through the interface based on the sink current mode.

[0009] On the other hand, in the sink current mode, if the second direct current voltage is supplied through the direct current voltage input terminal, the power controller can be controlled to interrupt the reception of the first direct current voltage through the interface.

[0010] On the other hand, in the operation in the pull current mode, if the second direct current voltage is supplied through the direct current voltage input terminal, the power controller can be controlled to interrupt the supply of the third direct current voltage through the interface.

[0011] On the other hand, if the second direct current voltage is supplied through the direct current voltage input terminal, the charge-discharge circuit device can supply a current corresponding to the second direct current voltage to the internal battery.

[0012] On the other hand, the power controller can be controlled to receive, in the charge current mode, a current of a first level or a current of a second level 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] On the other hand, in the charge current mode, the charge-discharge circuit device can supply the current of the first level or the current of the second level from the interface to the internal battery.

[0014] On the other hand, the power controller can be controlled to supply, in the pull current mode, a current of a third level smaller than the first level to the battery device or the mobile terminal through the interface.

[0015] On the other hand, the image display device of an embodiment of the present application further includes a signal processing device outputting an image signal to the display, and the interface can transmit the image signal received from the mobile terminal to the signal processing device or the power controller based on the display mode.

[0016] On the other hand, in the operation in the display mode, if the second direct current voltage is supplied through the direct current voltage input terminal, the interface can continue to transmit the image signal received from the mobile terminal to the signal processing device or the power controller.

[0017] On the other hand, the interface can include a first port receiving the first direct current voltage in the charge current mode or outputting the third direct current voltage to the outside in the pull current mode, and a second port receiving voltage information of the battery device or the mobile terminal.

[0018] On the other hand, the image display device of an embodiment of the present application further includes a load switch electrically connected to the first port, and the load switch can be turned off in the charge current mode and turned on in the pull current mode to supply the third direct current voltage to the first port.

[0019] On the other hand, in the charge current mode, the interface can supply the first direct current voltage received through the first port to the charge-discharge circuit device.

[0020] In another aspect, the image display apparatus of one embodiment of the present application further includes a dc / dc converter (direct current-direct current converter) electrically connected to the first port, and the dc / dc converter can reduce a level of the first direct current voltage received through the first port and supply the reduced level of the direct current voltage to the power controller in the current-filling mode.

[0021] In another aspect, the image display apparatus of one embodiment of the present application further includes a signal processing apparatus, and the signal processing apparatus outputs a mode change message if the second direct current voltage is supplied through the direct current voltage input terminal in the current-filling mode operation, and the power controller can be controlled to switch from the current-filling mode to the current-drawing mode based on the mode change message.

[0022] In another aspect, the image display apparatus of one embodiment of the present application further includes a load switch electrically connected to the interface, and the power controller can be controlled to turn on the load switch and supply the third direct current voltage to the interface through the load switch based on the mode change message.

[0023] The image display apparatus of another embodiment of the present application includes a display, an interface electrically connected to an external battery apparatus or a mobile terminal, a power controller controlling a current-drawing mode or a current-filling mode of the interface, and a direct current voltage input terminal, and the power controller can be controlled to receive a first direct current voltage from the battery apparatus or the mobile terminal through the interface in the current-filling mode, and the power controller can be controlled to interrupt the reception of the first direct current voltage through the interface and switch to a current-drawing mode to supply a third direct current voltage to the battery apparatus or the mobile terminal through the interface if a second direct current voltage is supplied through the direct current voltage input terminal in the current-filling mode operation.

[0024] In another aspect, the image display apparatus of another embodiment of the present application further includes a signal processing apparatus, and the signal processing apparatus outputs a mode change message if the second direct current voltage is supplied through the direct current voltage input terminal in the current-filling mode operation, and the power controller can be controlled to switch from the current-filling mode to the current-drawing mode based on the mode change message.

[0025] In another aspect, the image display apparatus of another embodiment of the present application further includes a load switch electrically connected to the interface, and the power controller can be controlled to turn on the load switch and supply the third direct current voltage to the interface through the load switch based on the mode change message.

[0026] In another aspect, an image display apparatus according to a further embodiment of the present application includes a display, an interface electrically connected with an external device, a power controller that determines a pull current mode or a sink current mode or a display mode as an operation mode whenever the external device is connected with the interface, a signal processing apparatus that outputs an image signal to the display, a resistance element between the power controller and the signal processing apparatus, and a direct current voltage input terminal, and if a direct current voltage is supplied through the direct current voltage input terminal, the power controller is controlled to output a high level signal to the resistance element and to operate in the pull current mode based on the high level signal.

[0027] In the operation in the pull current mode, if the supply of the direct current voltage through the direct current voltage input terminal is interrupted, the power controller can be controlled to operate in the sink current mode.

[0028] An image display apparatus according to an embodiment of the present application includes a display, an interface electrically connected with an external battery device or a mobile terminal, a power controller that controls a pull current mode or a sink current mode of the interface, an internal battery, and a charge-discharge circuit apparatus having a direct current voltage input terminal that controls a charge mode or a discharge mode of the internal battery, and in the sink current mode, if the supply of a direct current voltage through the direct current voltage input terminal is stopped, the power controller is controlled to receive a first direct current voltage from the battery device or the mobile terminal through the interface, and if a second direct current voltage is supplied through the direct current voltage input terminal, the power controller is controlled to supply a third direct current voltage to the battery device or the mobile terminal through the interface based on the pull current mode. Thereby, the pull current mode operation for supplying the direct current voltage to the external battery device or the mobile terminal can be performed.

[0029] In another aspect, in the sink current mode, if the second direct current voltage is supplied through the direct current voltage input terminal, the power controller can be controlled to interrupt the reception of the first direct current voltage through the interface. Thereby, in the case where the second direct current voltage is supplied through the direct current voltage input terminal, the sink current mode operation can be interrupted.

[0030] In another aspect, in the operation in the pull current mode, if the supply of the second direct current voltage through the direct current voltage input terminal is interrupted, the power controller can be controlled to interrupt the supply of the third direct current voltage through the interface. Thereby, in the case where the supply of the second direct current voltage through the direct current voltage input terminal is interrupted, the pull current mode operation can be interrupted.

[0031] In another aspect, if the second direct current voltage is supplied through the direct current voltage input terminal, the charge-discharge circuit apparatus can supply a current corresponding to the second direct current voltage to the internal battery. Thereby, the internal battery can be conveniently charged through the sink current mode.

[0032] On the other hand, the power controller can be controlled to receive, in the charge current mode, a first level of current from the battery device or the mobile terminal through the interface or a second level of current greater than the first level based on the voltage information or the current information of the battery device or the mobile terminal received through the interface. Thereby, various levels of current can be received in the charge current mode.

[0033] On the other hand, in the charge current mode, the charge and discharge circuit device can supply the internal battery with the first level of current or the second level of current from the interface. Thereby, in the charge current mode, the internal battery can be charged based on various levels of current.

[0034] On the other hand, the power controller can be controlled to supply, in the discharge current mode, a third level of current less than the first level to the battery device or the mobile terminal through the interface. Thereby, the discharge current mode operation for supplying the direct current voltage to the external battery device or the mobile terminal can be performed.

[0035] On the other hand, the image display device according to an embodiment of the present application further includes a signal processing device outputting an image signal to the display, and the interface can transmit the image signal received from the mobile terminal to the signal processing device or the power controller based on the display mode. Thereby, the image signal received from the mobile terminal can be conveniently displayed on the display through the display mode.

[0036] On the other hand, in the display mode operation, if the second direct current voltage is supplied through the direct current voltage input terminal, the interface can continue to transmit the image signal received from the mobile terminal to the signal processing device or the power controller. Thereby, even if the second direct current voltage is supplied through the direct current voltage input terminal, the image signal received from the mobile terminal can be stably displayed on the display through the display mode.

[0037] On the other hand, the interface can include a first port receiving the first direct current voltage in the charge current mode or outputting the third direct current voltage to the outside in the discharge current mode, and a second port receiving the voltage information of the battery device or the mobile terminal. Thereby, the operation of the discharge current mode or the charge current mode can be performed through the interface.

[0038] On the other hand, the image display device according to an embodiment of the present application further includes a load switch electrically connected to the first port, and the load switch can be turned off in the charge current mode and turned on in the discharge current mode to supply the third direct current voltage to the first port. Thereby, in the discharge current mode, the direct current voltage can be stably supplied to the external battery device or the mobile terminal.

[0039] On the other hand, in the charge current mode, the interface can supply the first direct current voltage received through the first port to the charge-discharge circuit device. Thus, the internal battery can be conveniently charged through the charge current mode.

[0040] On the other hand, the image display device of one embodiment of the present application further includes a dc / dc converter electrically connected to the first port, and in the charge current mode, the dc / dc converter can reduce the level of the first direct current voltage received through the first port and supply the direct current voltage of the reduced level to the power controller. Thus, the power controller can stably operate based on the direct current voltage from the external battery device or the mobile terminal.

[0041] On the other hand, the image display device of one embodiment of the present application further includes a signal processing device, and in the charge current mode operation, if the second direct current voltage is supplied through the direct current voltage input terminal, the signal processing device outputs a mode change message, and the power controller can be controlled to switch from the charge current mode to the discharge current mode based on the mode change message. Thus, the discharge current mode operation for supplying the direct current voltage to the external battery device or the mobile terminal can be performed.

[0042] On the other hand, the image display device of one embodiment of the present application further includes a load switch electrically connected to the interface, and the power controller can be controlled to turn on the load switch and supply the third direct current voltage to the interface through the load switch based on the mode change message. Thus, the discharge current mode operation for supplying the direct current voltage to the external battery device or the mobile terminal can be performed.

[0043] The image display device of another embodiment of the present application includes a display, an interface electrically connected to an external battery device or a mobile terminal, a power controller that controls a discharge current mode or a charge current mode of the interface, and a direct current voltage input terminal, in the charge current mode, the power controller can be controlled to receive a first direct current voltage from the battery device or the mobile terminal through the interface, and in the charge current mode operation, if a second direct current voltage is supplied through the direct current voltage input terminal, the power controller can be controlled to interrupt the reception of the first direct current voltage through the interface and switch to the discharge current mode to supply a third direct current voltage to the battery device or the mobile terminal through the interface. Thus, the discharge current mode operation for supplying the direct current voltage to the external battery device or the mobile terminal can be performed.

[0044] On the other hand, the image display device of another embodiment of the present application further includes a signal processing device, and in the charge current mode operation, if the second direct current voltage is supplied through the direct current voltage input terminal, the signal processing device outputs a mode change message, and the power controller can be controlled to switch from the charge current mode to the discharge current mode based on the mode change message. Thus, the discharge current mode operation for supplying the direct current voltage to the external battery device or the mobile terminal can be performed.

[0045] In another aspect, the image display apparatus of another embodiment of the present application further includes a load switch electrically connected to the interface, and the power controller can be controlled to turn on the load switch and supply the third DC voltage to the interface through the load switch based on the mode change message. Thereby, the pull current mode operation for supplying the DC voltage to the external battery apparatus or the mobile terminal can be performed.

[0046] In another aspect, the image display apparatus of another embodiment of the present application includes a display, an interface electrically connected to an external apparatus, a power controller that determines a mode of operation of a pull current mode or a sink current mode or a display mode whenever the external apparatus is connected to the interface, a signal processing apparatus that outputs an image signal to the display, a resistance element between the power controller and the signal processing apparatus, and a DC voltage input terminal, and if a DC voltage is supplied through the DC voltage input terminal, the power controller is controlled to output a high level signal to the resistance element and operates in the pull current mode based on the high level signal. Thereby, the pull current mode operation for supplying the DC voltage to the external apparatus can be performed.

[0047] In the operation in the pull current mode, if the supply of the DC voltage through the DC voltage input terminal is interrupted, the power controller can be controlled to operate in the sink current mode. Thereby, the sink current mode operation for receiving the DC voltage from the external apparatus can be performed. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 FIG. 1 is a diagram illustrating an image display apparatus of an embodiment of the present application.

[0049] Figure 2 FIG. 2 is an internal block diagram of the image display apparatus of FIG. 1. Figure 1

[0050] Figure 3 FIG. 3 is an internal block diagram of a signal processing apparatus of FIG. 2. Figure 2

[0051] Figure 4a FIG. 4 is a diagram illustrating a control method of a remote control apparatus of FIG. 2. Figure 2

[0052] Figure 4b FIG. 5 is an internal block diagram of the remote control apparatus of FIG. 4. Figure 2

[0053] Figures 5a to 5b FIG. 6 is a diagram illustrating an operation of an image display apparatus related to the present application.

[0054] Figure 6 FIG. 7 is a flowchart illustrating an operation method of an image display apparatus of an embodiment of the present application. FIG. 8 is a diagram illustrating an operation method of an image display apparatus of another embodiment of the present application.​​​

[0055] Figures 7a to 7f is a diagram referred to when explaining Figure 6 the operation.

[0056] Figure 8 is an internal block diagram of an image display apparatus according to an embodiment of the present application.

[0057] Figures 9a to 10c is a diagram referred to when explaining Figure 8 the operation.

[0058] Figure 11 is an internal block diagram of an image display apparatus according to another embodiment of the present application.

[0059] Figure 12 is an example of a flowchart showing a method of operation of the image display apparatus of Figure 11

[0060] is a diagram referred to when explaining Figures 13a to 13d or Figure 11 the operation. Figure 12 DETAILED DESCRIPTION

[0061] Hereinafter, the present application will be described in further detail with reference to the accompanying drawings.

[0062] The suffixes "module" and "part" used in the following description of constituent elements are merely intended to facilitate writing of the present specification and do not have any particular meaning or role in themselves. Therefore, the above "module" and "part" can be used in combination.

[0063] Figure 1 is a diagram showing an image display apparatus according to an embodiment of the present application.

[0064] Referring to the drawings, an image display apparatus 100 according to an embodiment of the present application includes a display 180.

[0065] On the other hand, the image display apparatus 100 can further include a stand FTE, and a support frame SPT supporting between the stand FTE and the display 180.

[0066] On the other hand, the image display apparatus 100 can be a mobile image display apparatus.

[0067] For example, at least one wheel can be provided at a lower portion of the stand FTE, and can operate when the image display apparatus 100 moves.

[0068] On the other hand, the display 180 in the image display apparatus 100 according to an embodiment of the present application can be rotatable.

[0069] ​For example, the display 180 in the image display device 100 can rotate in a horizontal mode with a screen ratio of Wa:Wb to switch to a vertical mode with a screen ratio of Wb:Wa.

[0070] As another example, the display 180 in the image display device 100 can rotate in portrait mode with a screen ratio of Wb:Wa and switch to landscape mode with a screen ratio of Wa:Wb.

[0071] On the other hand, the image display device 100 of one embodiment of the present invention can be wired or wirelessly connected to external peripheral electronic devices such as battery device 500 or mobile terminal 600.

[0072] For example, an image display device 100 according to an embodiment of the present invention can receive image signals from a mobile terminal 600 or the like.

[0073] On the other hand, an image display device 100 according to an embodiment of the present invention may include a battery ( Figure 2 (BTA).

[0074] On the other hand, the power supply device in the image display device 100 ( Figure 2 (190) can supply charging current to the battery BTA in the battery BTA charging mode to charge the battery BTA.

[0075] on the other hand, Figure 1 The image display device 100 can be a TV, a monitor, etc.

[0076] Figure 2 yes Figure 1 An example of an internal block diagram of an image display device.

[0077] Reference Figure 2 An image display device 100 according to an embodiment of the present invention 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 device 170, a display 180, and an audio output unit 185.

[0078] The image receiving unit 105 may include a tuning unit 110, a demodulation unit 120, a network interface unit 135, and an external device interface unit 130.

[0079] On the other hand, unlike the accompanying drawings, the image receiving unit 105 may also include only the tuning unit 110, the demodulation unit 120, and the external device interface unit 130. That is, the network interface unit 135 may not be included.

[0080] The tuning part 110 selects a channel selected by a user or an RF broadcast signal corresponding to all channels pre-stored among RF (Radio Frequency) broadcast signals received through an antenna (not shown). Also, the selected RF broadcast signal is converted into an intermediate frequency signal or a baseband image or voice signal.

[0081] 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 image or voice signal (CVBS / SIF). That is, the tuning part 110 can process a digital broadcast signal or an analog broadcast signal. The analog baseband image or voice signal (CVBS / SIF) output from the tuning part 110 can be directly input to the signal processing device 170.

[0082] On the other hand, in order to receive broadcast signals of a plurality of channels, the tuning part 110 can have a plurality of tuners. Or, it can also be a single tuner that receives broadcast signals of a plurality of channels at the same time.

[0083] The demodulation part 120 receives the digital IF signal (DIF) converted in the tuning part 110 and performs a demodulation action.

[0084] The demodulation part 120 can output a stream media signal (TS) after performing demodulation and channel decoding. At this time, the stream media signal can be a signal in which an image signal or a voice signal or a data signal is multiplexed.

[0085] The stream media signal output from the demodulation part 120 can be input to the signal processing device 170. The signal processing device 170 outputs an image on the display 180 and outputs a voice to the audio output part 185 after performing demultiplexing, image / voice signal processing, etc.

[0086] The external device interface part 130 can transceive data with an external device (not shown) connected, for example, a set-top box 50. To this end, the external device interface part 130 can include an A / V input / output part (not shown).

[0087] The external device interface part 130 can be connected with an external device, such as a DVD (Digital Versatile Disk), a Blu ray, a game device, a camera, a camcorder, a computer (a notebook computer), a set-top box, etc. in a wired / wireless manner, and can also perform input / output actions with the external device.

[0088] The A / V input / output part can receive an image and a voice signal of the external device. On the other hand, the wireless communication part (not shown) can perform close-range wireless communication with other electronic devices.

[0089] The external device interface portion 130 can exchange data with the adjacent mobile terminal 600 through such a wireless communication portion (not shown). In particular, in the mirroring mode, the external device interface portion 130 can receive device information, running application information, application images, etc. from the mobile terminal 600.

[0090] The network interface portion 135 provides an interface for connecting the image display apparatus 100 with a wired / wireless network including the Internet. For example, the network interface portion 135 can receive content or data provided by an Internet or a content provider or a network operator through a network.

[0091] On the other hand, the network interface portion 135 can include a wireless communication portion (not shown).

[0092] The storage portion 140 can store programs for processing and controlling various signals within the signal processing apparatus 170, and can store image or voice or data signals processed by the signal processing apparatus 170.

[0093] In addition, the storage portion 140 can further perform a function for temporarily storing image or voice or data signals input through the external device interface portion 130. In addition, the storage portion 140 can store information related to a prescribed broadcast channel through a channel memory function such as a channel map.

[0094] Figure 2 An embodiment in which the storage portion 140 is provided separately from the signal processing apparatus 170 is shown, but the scope of the present application is not limited thereto. The storage portion 140 can be included within the signal processing apparatus 170.

[0095] The user input interface portion 150 delivers a signal input by a user to the signal processing apparatus 170, or delivers a signal from the signal processing apparatus 170 to the user.

[0096] For example, a user input signal of power on / off, channel selection, screen setting, etc. can be transmitted / received from a remote control apparatus 200, or a user input signal input by a local key (not shown) such as a power key, a channel key, a volume key, a setting key, etc. can be delivered to the signal processing apparatus 170, or a user input signal input by a sensor portion (not shown) that senses a user's gesture can be delivered to the signal processing apparatus 170, or a signal from the signal processing apparatus 170 can be transmitted to the sensor portion (not shown).

[0097] The signal processing apparatus 170 can demultiplex a stream input through the tuning portion 110 or the demodulation portion 120 or the network interface portion 135 or the external device interface portion 130, or generate and output a signal for image or voice output by processing the demultiplexed signal.

[0098] For example, the signal processing device 170 can receive a broadcast signal or an HDMI signal or the like received from the image receiving section 105, perform signal processing based on the received broadcast signal or HDMI signal, and output the image signal of the signal-processed image.

[0099] The image signal processed in the signal processing device 170 can be input to the display 180 and displayed as an image corresponding to the respective image signal. In addition, the image signal processed in the signal processing device 170 can be output to an external output device through the external device interface section 130.

[0100] The voice signal processed in the signal processing device 170 can be output as sound to the audio output section 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 section 130.

[0101] Although not shown in Figure 2 , the signal processing device 170 can include a demultiplexing section, an image processing section, and the like. That is, the signal processing device 170 can perform various signal processing, and thus can be implemented in the form of a System On Chip (SOC). In this regard, a description will be made later with reference to Figure 3 .

[0102] In addition to this, the signal processing device 170 can control the overall operation within the image display device 100. For example, the signal processing device 170 can control the tuning of the RF broadcast corresponding to a channel selected by a user or a pre-stored channel by controlling the tuning section 110.

[0103] In addition, the signal processing device 170 can control the image display device 100 according to a user instruction input through the user input interface section 150 or an internal program.

[0104] On the other hand, the signal processing device 170 can control the display 180 to display an image. At this time, the image displayed on the display 180 can be a still image or a video, and can be a 2D image or a 3D image.

[0105] On the other hand, the signal processing device 170 can display a prescribed object within the image displayed on the display 180. For example, the object can be at least one of a connected web page screen (newspaper, magazine, and the like), an EPG (Electronic Program Guide), various menus, a widget, an icon, a still image, a video, and text.

[0106] On the other hand, the signal processing device 170 can recognize the position of the user based on an image photographed by a photographing section (not shown). For example, the distance (z-axis coordinate) between the user and the image display device 100 can be grasped. In addition thereto, the x-axis coordinate and the y-axis coordinate within the display 180 corresponding to the position of the user can be grasped.

[0107] The display 180 generates a driving signal by converting an image signal, a data signal, an OSD signal, a control signal processed in the signal processing device 170 or an image signal, a data signal, a control signal, etc. received from the external device interface section 130.

[0108] On the other hand, the display 180 is configured as a touch screen and can be used as an input device in addition to an output device.

[0109] The audio output section 185 receives a signal processed in the signal processing device 170 and outputs it as a voice.

[0110] The photographing section (not shown) photographs the user. The photographing section (not shown) can be implemented by one camera, but is not limited thereto and can be implemented by a plurality of cameras. Image information photographed by the photographing section (not shown) can be input to the signal processing device 170.

[0111] The signal processing device 170 can detect the posture of the user based on each of an image photographed by the photographing section (not shown) or a signal detected by the sensor section (not shown) or a combination thereof.

[0112] The power supply device (power supply section) 190 can supply a corresponding power source to the entire image display device 100.

[0113] In particular, the power supply device 190 can supply power to the signal processing device 170 which can be implemented in the form of a system on chip (SOC), the display 180 for image display, the audio output section 185 for audio output, etc.

[0114] Specifically, the power supply device 190 can have a converter which converts the level of an input voltage.

[0115] For example, in the case where the input voltage is an alternating voltage, the power supply device 190 can have an ac / dc converter and a dc / dc converter.

[0116] As another example, in the case where the input voltage is a direct voltage, the power supply device 190 can have a dc / dc converter.

[0117] On the other hand, the power supply device 190 has a battery BTA.

[0118] The remote control device 200 can transmit a user input to the user input interface section 150. To this end, the remote control device 200 can use Bluetooth, RF (Radio Frequency) communication, IR (Infrared Ray) communication, UWB (Ultra Wideband), ZigBee, etc. In addition, the remote control device 200 receives an image or voice or a data signal, etc. output from the user input interface section 150, and displays or voice-outputs the same in the remote control device 200.

[0119] On the other hand, the image display device 100 described above can be a digital broadcast receiver capable of receiving a fixed-type or mobile-type digital broadcast.

[0120] On the other hand, Figure 2 The block diagram of the image display device 100 shown is a block diagram for an embodiment of the present application. Each constituent element of the block diagram can be integrated or added or omitted according to the specifications of the image display device 100 actually implemented. That is, two or more constituent elements can be combined into one constituent element, or one constituent element can be split into two or more constituent elements, as needed. In addition, the functions performed in each block are for explaining the embodiment of the present application, and the specific actions or devices thereof do not limit the scope of the present application.

[0121] Figure 3 is Figure 2 an example of an internal block diagram of the signal processing device.

[0122] Referring to the drawings, the signal processing device 170 of an embodiment of the present application can include a demultiplexing section 310, an image processing section 320, a processor 330, and an audio processing section 370. In addition thereto, a data processing section (not shown) can be further included.

[0123] The demultiplexing section 310 demultiplexes an input stream media. For example, in the case of inputting an MPEG-2 TS, it can be demultiplexed to separate into an image, a voice, and a data signal, respectively. Here, the stream media signal input to the demultiplexing section 310 can be a stream media signal output from the tuning section 110 or the demodulating section 120 or the external device interface section 130.

[0124] The image processing section 320 can perform signal processing on an input image. For example, the image processing section 320 can perform image processing of an image signal demultiplexed by the demultiplexing section 310.

[0125] To this end, the image processing section 320 can include an image decoder 325, a scaler 335, a picture quality processing section 635, an image encoder (not shown), a graphics processing section 340, a frame rate conversion section 350, and a formatter 360, etc.

[0126] The image decoder 325 decodes the demultiplexed image signal, and the scaler 335 performs scaling to enable output of the resolution of the decoded image signal on the display 180.

[0127] The image decoder 325 can have various types of decoders. For example, an MPEG-2, H.264 decoder, a 3D image decoder for a color image and a depth image, a decoder for a plurality of viewpoint images, etc.

[0128] The scaler 335 can scale the input image signal on which image decoding is completed in the image decoder 325 or the like.

[0129] For example, the scaler 335 can perform up scaling in the case where the size or resolution of the input image signal is small, and can perform down scaling in the case where the size or resolution of the input image signal is large.

[0130] The image quality processing unit 635 can perform image quality processing on the input image signal on which image decoding is completed in the image decoder 325 or the like.

[0131] For example, the image quality processing unit 635 can perform noise removal processing of the input image signal, or can expand the resolution of the gray scale level of the input image signal, or can perform image resolution enhancement, or can perform signal processing based on a high dynamic range (HDR), or can change a frame rate, or can perform panel characteristics, particularly, image quality processing corresponding to a panel, etc.

[0132] The graphic processing unit 340 generates an OSD signal according to a user input or spontaneously. For example, a signal for displaying various information in a graphic or a text on a screen of the display 180 can be generated based on a user input signal. The generated OSD signal can include various data such as a user interface screen of the image display apparatus 100, various menu screens, a window widget, an icon, etc. In addition, the generated OSD signal can include a 2D object or a 3D object.

[0133] In addition, the graphic processing unit 340 can generate a cursor that can be displayed on the display based on a cursor signal input from the remote control apparatus 200. In particular, such a cursor can be generated in a cursor signal processing unit, and the graphic processing unit 240 can include such a cursor signal processing unit (not shown). Of course, the cursor signal processing unit (not shown) can be separately provided without being provided in the graphic processing unit 240.

[0134] A frame rate converter 350 can convert a frame rate of an input image. On the other hand, the frame rate converter 350 can also be directly outputted without a separate frame rate conversion.

[0135] On the other hand, a formatter 360 can convert a format of an input image signal into an image signal for display on a display and output the same.

[0136] In particular, the formatter 360 can change a format of an image signal to correspond to a display panel.

[0137] On the other hand, the formatter 360 can also change a format of an image signal.

[0138] The processor 330 can control the overall operation within the image display apparatus 100 or within the signal processing apparatus 170.

[0139] For example, the processor 330 can control an RF broadcast tuned to correspond to a channel selected by a user or a pre-stored channel by controlling the tuner 110.

[0140] In addition, the processor 330 can control the image display apparatus 100 according to a user command input through the user input interface 150 or an internal program.

[0141] In addition, the processor 330 can perform data transmission control with the network interface 135 or the external device interface 130.

[0142] In addition, the processor 330 can control the operation of the demultiplexer 310, the image processing section 320, etc. within the signal processing apparatus 170.

[0143] On the other hand, the audio processing section 370 within the signal processing apparatus 170 can perform voice processing of a demultiplexed voice signal. To this end, the audio processing section 370 can have various decoders.

[0144] In addition, the audio processing section 370 within the signal processing apparatus 170 can process base, treble, volume adjustment, etc.

[0145] A data processing section (not shown) within the signal processing apparatus 170 can perform data processing of a demultiplexed data signal. For example, in the case where the demultiplexed data signal is an encoded data signal, it can be decoded. The encoded data signal can be an Electronic Program Guide (EPG) information including broadcast information such as a start time, an end time, etc. of a broadcast program shown in each channel.

[0146] On the other hand, Figure 3 The block diagram of the signal processing apparatus 170 shown is a block diagram for an embodiment of the present application. Each constituent element of the block diagram can be integrated or added or omitted according to the specifications of the signal processing apparatus 170 actually implemented.

[0147] In particular, the frame rate conversion section 350 and the formatter 360 can also be separately provided outside the image processing section 320.

[0148] On the other hand, the signal processing apparatus 170 of an embodiment of the present application can also include a neural network processor 333 for learning processing or the like.

[0149] Figure 4a is a diagram showing Figure 2 a control method of the remote control apparatus.

[0150] As shown in (a) of Figure 4a , an example is illustrated in which a cursor 205 corresponding to the remote control apparatus 200 is displayed on the display 180.

[0151] The user can move or rotate the remote control apparatus 200 up and down (b) of Figure 4a , left and right (c) of Figure 4a . The cursor 205 displayed on the display 180 of the image display apparatus corresponds to the movement of the remote control apparatus 200. As shown in the figure, since the corresponding cursor 205 of such a remote control apparatus 200 moves the display according to the movement on the 3D space, it can be called a spatial remote controller or a 3D cursor apparatus.

[0152] Figure 4a (b) of

[0153] Information related to the movement of the remote control apparatus 200 detected by the sensor of the remote control apparatus 200 is transmitted to the image display apparatus. The image display apparatus can calculate the coordinates of the cursor 205 from the information related to the movement of the remote control apparatus 200. The image display apparatus can display the cursor 205 to correspond to the calculated coordinates.

[0154] Figure 4aThe (c) illustrates a case where the user moves the remote control device 200 away from the display 180 in a state where a specific button in the remote control device 200 is pressed. Thus, a selection area in the display 180 corresponding to the cursor 205 can be zoomed in and enlarged. In contrast, in a case where the user moves the remote control device 200 close to the display 180, the selection area in the display 180 corresponding to the cursor 205 can be zoomed out and reduced. On the other hand, the selection area can be zoomed out in a case where the remote control device 200 is moved away from the display 180, and the selection area can be zoomed in in a case where the remote control device 200 is moved close to the display 180.

[0155] On the other hand, in a state where a specific button in the remote control device 200 is pressed, recognition of the up-down and left-right movements can be excluded. That is, in a case where the remote control device 200 is moved away from or close to the display 180, only the front-back movement can be recognized, and the up-down and left-right movements can not be recognized. In a state where the specific button in the remote control device 200 is not pressed, the cursor 205 is moved only according to the up-down, left-right movement of the remote control device 200.

[0156] On the other hand, the moving speed or moving direction of the cursor 205 can correspond to the moving speed or moving direction of the remote control device 200.

[0157] Figure 4b is Figure 2 An internal block diagram of the remote control device.

[0158] Referring to the drawings, the remote control device 200 can include a wireless communication section 420, a user input section 430, a sensor section 440, an output section 450, a power supply section 460, a storage section 470, and a control section 480.

[0159] The wireless communication section 420 transmits and receives signals with any of the image display devices of the embodiments of the present application described above. In the image display device of the embodiments of the present application, one image display device 100 is described as an example.

[0160] In the present embodiment, the remote control device 200 can have an RF module 421 that transmits and receives signals with the image display device 100 according to an RF communication specification. In addition, the remote control device 200 can have an IR module 423 that transmits and receives signals with the image display device 100 according to an IR communication specification.

[0161] In the present embodiment, the remote control device 200 transmits a signal including information related to the movement of the remote control device 200 or the like to the image display device 100 through the RF module 421. In the present embodiment, the remote control device 200 transmits a signal including information related to the movement of the remote control device 200 or the like to the image display device 100 through the RF module 421.

[0162] In addition, the remote control apparatus 200 can receive a signal transmitted by the image display apparatus 100 through the RF module 421. In addition, the remote control apparatus 200 can transmit a command related to power on / off, channel change, volume change, etc. to the image display apparatus 100 through the IR module 423 as needed.

[0163] The user input part 430 can be constituted by a keyboard, a button, a touch pad, or a touch screen, etc. A user can operate the user input part 430 to input a command related to the image display apparatus 100 to the remote control apparatus 200. In the case where the user input part 430 has a hard key button, the user can input a command related to the image display apparatus 100 to the remote control apparatus 200 through a press action of the hard key button. In the case where the user input part 430 has a touch screen, the user can input a command related to the image display apparatus 100 to the remote control apparatus 200 by touching a soft key of the touch screen. In addition, the user input part 430 can have various types of input means which a user can operate, such as a scroll key, a jog key, etc., and the present embodiment does not limit the scope of the present application.

[0164] The sensor part 440 can have a gyro sensor 441 or an acceleration sensor 443. The gyro sensor 441 can sense information related to a movement of the remote control apparatus 200.

[0165] As an example, the gyro sensor 441 can sense information related to a motion of the remote control apparatus 200 with x, y, z axes as a reference. The acceleration sensor 443 can sense information related to a moving speed of the remote control apparatus 200, etc. On the other hand, there can be a distance measurement sensor, and thus a distance between the display 180 can be sensed.

[0166] The output part 450 can output an image or a voice signal corresponding to an operation of the user input part 430 or a signal transmitted from the image display apparatus 100. Through the output part 450, a user can recognize whether to operate the user input part 430 or to control the image display apparatus 100.

[0167] As an example, the output part 450 can include an LED module 451 which is lighted when the user input part 430 is operated or signals are transceived with the image display apparatus 100 through the wireless communication part 420, a vibration module 453 which generates vibration, a sound output module 455 which outputs sound, or a display module 457 which outputs an image.

[0168] The power supply unit 460 supplies power to the remote control device 200. In a case where the remote control device 200 is not moved during a prescribed time period, the power supply unit 460 interrupts the power supply, so that power waste can be reduced. In a case where a prescribed key provided in the remote control device 200 is operated, the power supply unit 460 can resume the power supply.

[0169] The storage unit 470 can store various types of programs, application data, and the like required for the control or action of the remote control device 200. If the remote control device 200 wirelessly transmits and receives signals with the image display device 100 through the RF module 421, the remote control device 200 and the image display device 100 transmit and receive signals through a prescribed frequency band. The control unit 480 of the remote control device 200 can store information related to the frequency band and the like in which the image display device 100 that can be paired with the remote control device 200 wirelessly transmits and receives signals, to the storage unit 470 and refer to the same.

[0170] The control unit 480 controls the overall matters related to the control of the remote control device 200. The control unit 480 can transmit a signal corresponding to the operation of a prescribed key of the user input unit 430 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 through the wireless communication unit 420.

[0171] The user input interface unit 150 of the image display device 100 can include a wireless communication unit 411 capable of wirelessly transmitting and receiving signals with the remote control device 200, and a coordinate value calculation unit 415 capable of calculating the coordinate values of a cursor corresponding to the action of the remote control device 200.

[0172] The user input interface unit 150 can wirelessly transmit and receive signals with the remote control device 200 through the RF module 412. In addition, through the IR module 413, a signal transmitted from the remote control device 200 can be received according to an IR communication specification.

[0173] The coordinate value calculation unit 415 corrects hand shake or error in a signal corresponding to the action of the remote control device 200 received through the wireless communication unit 411, so that the coordinate values x, y of the cursor 205 to be displayed on the display 170 can be calculated.

[0174] The transmission signal of the remote control device 200 input to the image display device 100 through the user input interface unit 150 is transmitted to the signal processing device 170 of the image display device 100. The signal processing device 170 discriminates information related to the action and key operation of the remote control device 200 from the signal transmitted from the remote control device 200, and can control the image display device 100 corresponding to the information.

[0175] As still another example, the remote control device 200 can calculate the cursor coordinate value corresponding to its motion and output to the user input interface section 150 of the image display device 100. In this case, the user input interface section 150 of the image display device 100 can transmit information related to the received cursor coordinate value to the signal processing device 170 without an additional process of correcting hand shake or error.

[0176] In addition, as another example, unlike the drawing, the coordinate value calculation section 415 can also be provided inside the signal processing device 170 instead of the user input interface section 150.

[0177] Figures 5a to 5b FIG. 1 is a diagram illustrating an operation of an image display device related to the present application.

[0178] Figure 5a FIG. 1 is a diagram illustrating an operation of an image display device related to the present application.

[0179] Referring to the drawing, an image display device 100x related to the present application can include an interface 510 electrically connected with an external battery device 500, a power controller 520, a charge-discharge circuit device 530, and an internal battery BTA.

[0180] On the other hand, the interface 510 and the power controller 520 can be mounted on a main circuit board MDx.

[0181] On the other hand, Figure 5a A case where the supply of the direct-current voltage DC-IN through the direct-current voltage input terminal 532 inside the charge-discharge circuit device 530 is stopped is exemplified.

[0182] On the other hand, the image display device 100x can receive the first current IPHx through the interface 510 based on a sink mode.

[0183] On the other hand, the charge-discharge circuit device 530 can be controlled to charge the internal battery BTA based on the first current IPHx input through the interface 510 in a state where the supply of the direct-current voltage DC-IN through the direct-current voltage input terminal 532 is stopped.

[0184] Figure 5b FIG. 1 is a diagram illustrating an operation of an image display device related to the present application.

[0185] Referring to the drawing, an image display device 100x related to the present application can include an interface 510 electrically connected with an external battery device 500, a power controller 520, a charge-discharge circuit device 530, and an internal battery BTA. Figure 5a Unlike the drawing, Figure 5b A case where the direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 532 is exemplified.

[0186] Figure 5bThe image display apparatus 100x related to the present application can be controlled so that, in the charge current mode operation, if the direct current voltage DC-IN is supplied through the direct current voltage input terminal 532, the internal battery BTA is charged based on the second current IPHy input through the interface 510.

[0187] That is, the charge and discharge circuit apparatus 530 in the figure can be controlled so that, in the charge current mode operation, if the direct current voltage DC-IN is supplied through the direct current voltage input terminal 532, the internal battery BTA is charged based on the second current IPHy input through the interface 510.

[0188] As shown in Figure 5b , there is a disadvantage that even if the direct current voltage DC-IN is supplied through the direct current voltage input terminal 532, the direct current or the direct current voltage cannot be supplied to the external battery apparatus 500 through the interface 510 because the charge current mode is continuously performed.

[0189] Therefore, in the present application, a scheme in which the interface 510 operates in a source mode in addition to the charge current mode is proposed. For this, reference is made to Figure 6 and the subsequent figures.

[0190] Figure 6 is a flowchart showing an operation method of an image display apparatus according to an embodiment of the present application.

[0191] Referring to the drawings, the power controller 620 in the image display apparatus 100 according to an embodiment of the present application determines whether the external battery apparatus 500 or the mobile terminal 600 is connected (S610).

[0192] For example, the power controller 620 in the image display apparatus 100 can receive information from the external battery apparatus 500 or the mobile terminal 600 through the interface 610.

[0193] The information at this time can include voltage information or current information of the external battery apparatus 500 or the mobile terminal 600.

[0194] Specifically, the power controller 620 in the image display apparatus 100 can receive voltage information or current information from the external battery apparatus 500 or the mobile terminal 600 through the interface 610, and can determine that the external battery apparatus 500 or the mobile terminal 600 is connected based on the voltage information or the current information.

[0195] Next, the power controller 620 in the image display apparatus 100 according to an embodiment of the present application determines the operation mode of the interface 610 (S615).

[0196] For example, if the received voltage information or current information is above the reference level, the power controller 620 in the image display apparatus 100 can determine to operate in a sink current mode for receiving voltage or current from the external battery apparatus 500 or mobile terminal 600.

[0197] As another example, if the received voltage information or current information is less than a second reference level, the power controller 620 in the image display apparatus 100 can determine to operate in a sink current mode for supplying voltage or current to the external battery apparatus 500 or mobile terminal 600.

[0198] The second reference level at this time can be less than the reference level, but unlike this, the second reference level can also be the same as the reference level.

[0199] Next, the power controller 620 in the image display apparatus 100 of an embodiment of the present application can determine whether the interface 610 is determined to operate in the sink current mode (S620), and if it is determined to be so, can control to operate in the sink current mode (S620).

[0200] For example, in the sink current mode, if the supply of the direct current voltage through the direct current voltage input terminal 632 is stopped, the power controller 620 can control to receive the first direct current voltage (Vm) or first direct current (IPHm) from the battery apparatus 500 or mobile terminal 600 through the interface 610. Figure 7a Figure 7a

[0201] Thus, the charge / discharge circuit apparatus 630 can control to receive the first direct current voltage Vm or first direct current through the interface 610 and charge the internal battery BTA based on the first direct current voltage Vm or first direct current.

[0202] That is, the charge / discharge circuit apparatus 630 can control to receive the first direct current voltage Vm or first direct current through the interface 610 and charge the internal battery BTA according to the charging mode based on the first direct current voltage Vm or first direct current. Thus, the internal battery BTA can be conveniently charged through the sink current mode.

[0203] Next, the power controller 620 or signal processing apparatus 170 in the image display apparatus 100 of an embodiment of the present application determines whether a direct current voltage is supplied through the direct current voltage input terminal 632 in the sink current mode operation (S630), and if it is determined to be so, controls the interface 610 to operate in the sink current mode (S635).

[0204] ​​For example, if the second direct-current voltage DC-IN or the second direct-current corresponding to the second direct-current voltage is supplied through the direct-current voltage input terminal 632, the power controller 620 or the signal processing device 170 within the image display apparatus 100 can be controlled to interrupt the reception of the first direct-current voltage Vm or the first direct-current through the interface 610.

[0205] Also, the power controller 620 or the signal processing device 170 within the image display apparatus 100 can be controlled to perform the pull current mode after interrupting the reception of the first direct-current voltage Vm or the first direct-current.

[0206] That is, the power controller 620 or the signal processing device 170 within the image display apparatus 100 is controlled to supply the third direct-current voltage Vn or the third direct-current corresponding to the third direct-current voltage to the battery device 500 or the mobile terminal 600 through the interface 610 based on the pull current mode after interrupting the reception of the first direct-current voltage Vm or the first direct-current. Thereby, the pull current mode operation for supplying the direct-current voltage to the external battery device 500 or the mobile terminal 600 can be performed.

[0207] On the other hand, the power controller 620 or the signal processing device 170 within the image display apparatus 100 can be controlled to interrupt the supply of the third direct-current voltage Vn or the third direct-current through the interface 610 if the supply of the second direct-current voltage DC-IN or the second direct-current through the direct-current voltage input terminal 632 is interrupted in the pull current mode operation. Thereby, the pull current mode operation can be interrupted in the case where the supply of the second direct-current voltage DC-IN or the second direct-current through the direct-current voltage input terminal 632 is interrupted.

[0208] Figures 7a to 7f is a diagram referred to in explaining Figure 6 the operation.

[0209] Figure 7a An example of the pull current mode operation of the interface of the image display apparatus of the embodiment of the present application is shown.

[0210] Referring to the drawings, the image display apparatus 100 of the embodiment of the present application includes a display 180, an interface 610 electrically connected to an external battery device 500, a power controller 620 controlling the operation of the interface 610, an internal battery BTA, and a charge-discharge circuit device 630 controlling the charge mode or the discharge mode of the internal battery BTA.

[0211] On the other hand, the image display apparatus 100 of the embodiment of the present application can further include a signal processing device 170 outputting an image signal to the display 180.

[0212] On the other hand, the interface 610, the power controller 620, and the signal processing device 170 can be mounted on the main circuit board MD.

[0213] On the other hand, the charge-discharge circuit device 630 is separated from the main circuit board MD, and includes a direct-current voltage input terminal 632.

[0214] On the other hand, the charge-discharge circuit device 630 can further include a second interface 634 that supplies a voltage or a current to the internal battery BTA in a charging mode of the internal battery BTA, and receives a voltage or a current in a discharging mode of the internal battery BTA, and a switching device 636 that performs switching to supply the voltage or the current from the interface 610 to the second interface 634.

[0215] On the other hand, Figure 7a A case where supply of the direct-current voltage DC-IN through the direct-current voltage input terminal 632 in the charge-discharge circuit device 630 is stopped is exemplified.

[0216] On the other hand, in a case where the battery device 500 is connected, the power controller 620 can receive voltage information or current information of the battery device 500 through the interface 610.

[0217] And, if the voltage information or the current information of the battery device 500 is a reference level or more, the power controller 620 can be controlled to cause the interface 610 to operate in a sink mode.

[0218] On the other hand, in the sink mode, if supply of the second direct-current voltage DC-IN through the direct-current voltage input terminal 632 is stopped, the power controller 620 is controlled to receive the first direct-current voltage Vm or the first direct-current current IPHm corresponding to the first direct-current voltage Vm through the interface 610.

[0219] On the other hand, since supply of the direct-current voltage DC-IN through the direct-current voltage input terminal 632 is stopped, the interface 610 can receive the first direct-current voltage Vm or the first direct-current current IPHm corresponding to the first direct-current voltage Vm from the battery device 500 on the basis of the sink mode.

[0220] And, the charge-discharge circuit device 630 can be controlled to charge the internal battery BTA on the basis of the first direct-current voltage Vm or the first direct-current current IPHm corresponding to the first direct-current voltage Vm from the interface 610 by turning on the switching device 636.

[0221] Figure 7b Another example of sink mode operation of an interface of an image display device according to an embodiment of the present application is shown.

[0222] Referring to the drawings, and Figure 7aOn the other hand, in the case where the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the power controller 620 can be controlled to interrupt the reception of the first direct-current voltage Vm or the first direct-current current IPHm through the interface 610. Thus, in the case where the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the operation in the charge current mode can be interrupted.

[0223] On the other hand, in the case where the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the power controller 620 can be controlled to interrupt the reception of the first direct-current voltage Vm or the first direct-current current IPHm through the interface 610. Thus, in the case where the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the operation in the charge current mode can be interrupted.

[0224] On the other hand, in the case where the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the power controller 620 can be controlled to interrupt the reception of the first direct-current voltage Vm or the first direct-current current IPHm through the interface 610. Thus, in the case where the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the operation in the charge current mode can be interrupted.

[0225] On the other hand, in the case where the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the power controller 620 can be controlled to interrupt the reception of the first direct-current voltage Vm or the first direct-current current IPHm through the interface 610. Thus, in the case where the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the operation in the charge current mode can be interrupted.

[0226] On the other hand, in the case where the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the power controller 620 can be controlled to interrupt the reception of the first direct-current voltage Vm or the first direct-current current IPHm through the interface 610. Thus, in the case where the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the operation in the charge current mode can be interrupted.

[0227] Figure 7c An example of the operation in the pull current mode of the interface of the image display apparatus according to the embodiment of the present application is shown.

[0228] Referring to the drawings, if the second direct-current voltage DC-IN or the second direct-current current is supplied through the direct-current voltage input terminal 632, the power controller 620 can be controlled to supply the third direct-current voltage Vn or the third direct-current current IPHn corresponding to the third direct-current voltage Vn to the battery apparatus 500 through the interface 610 on the basis of the pull current mode. Thus, the operation in the pull current mode for supplying the direct-current voltage to the external battery apparatus 500 can be performed.

[0229] At this time, the level of the third direct-current current in the pull current mode can be smaller than the level of the first direct-current current in the charge current mode.

[0230] On the other hand, when operating in the pull current mode, since the second direct current DC-IN or the second direct current is supplied through the direct current voltage input terminal 632, the charge-discharge circuit device 630 can supply the second direct current voltage DC-IN or the second direct current to the internal battery BTA. Thereby, the internal battery BTA can be stably charged in correspondence with the supply of the direct current voltage DC-IN input through the direct current voltage input terminal 632.

[0231] Figure 7d Another example of the pull current mode operation of the interface of the image display apparatus of the embodiment of the present application is shown.

[0232] Referring to the drawings, in the pull current mode operation, if the supply of the second direct current voltage DC-IN or the second direct current through the direct current voltage input terminal 632 is interrupted, the power controller 620 can be controlled to interrupt the supply of the third direct current voltage Vn or the third direct current IPHn through the interface 610. Thereby, in the case where the supply of the second direct current voltage DC-IN through the direct current voltage input terminal 632 is interrupted, the pull current mode operation can be interrupted.

[0233] On the other hand, when operating in the pull current mode, since the second direct current voltage DC-IN or the second direct current is supplied through the direct current voltage input terminal 632, the charge-discharge circuit device 630 can supply the second direct current voltage DC-IN or the second direct current to the internal battery BTA. Thereby, the internal battery BTA can be stably charged in correspondence with the supply of the direct current voltage DC-IN input through the direct current voltage input terminal 632.

[0234] On the other hand, in the pull current mode interruption and the interruption of the charging mode of the internal battery BTA, if it is required to display an image on the display 180, the charge-discharge circuit device 630 can switch the internal battery BTA to the discharging mode and operate the signal processing device 170, the display 180, and the like based on the direct current voltage or the direct current from the internal battery BTA. Thereby, an image can be stably displayed.

[0235] Figure 7e An example of the display mode operation of the interface of the image display apparatus of the embodiment of the present application is shown.

[0236] Referring to the drawings, in the case where the mobile terminal 600 is connected to the interface 610, the interface 610 can operate in the display mode based on a set input or a mode selection, and the like.

[0237] That is, the power controller 620 can be controlled to receive the display mode related information from the mobile terminal 600 and operate the interface 610 in the display mode based on the received display mode related information.

[0238] Correspondingly thereto, the interface 610 can receive the image signal Svd from the mobile terminal 600 and transmit the image signal Svd to the signal processing device 170 or the power controller 620 in the display mode.

[0239] On the other hand, the signal processing device 170 can be controlled to perform signal processing on the image signal Svd and cause an image corresponding to the signal-processed image signal Svd to be displayed on the display 180.

[0240] On the other hand, if the second direct-current voltage DC-IN or the second direct-current current is supplied through the direct-current voltage input terminal 632 while the display mode operation is performed, the power controller 620 or the signal processing device 170 can be controlled to continue the display mode operation.

[0241] Figure 7f Another example of the display mode operation of the interface of the image display device according to an embodiment of the present application is shown.

[0242] Referring to the drawings, as Figure 7e In this case, the interface 610 can operate in the display mode based on a setting input or a mode selection, etc. in the mobile terminal 600.

[0243] However, unlike Figure 7e The difference is that the supply of the second direct-current voltage DC-IN or the second direct-current current through the direct-current voltage input terminal 632 is interrupted while the display mode operation is performed.

[0244] On the other hand, even if the supply of the second direct-current voltage DC-IN or the second direct-current current through the direct-current voltage input terminal 632 is interrupted while the display mode operation is performed, the power controller 620 or the signal processing device 170 can be controlled to continue the display mode operation.

[0245] That is, even if the supply of the second direct-current voltage DC-IN or the second direct-current current is interrupted, the interface 610 can receive the image signal Svd from the mobile terminal 600 and transmit the image signal Svd to the signal processing device 170 or the power controller 620 in the display mode, and the signal processing device 170 can be controlled to perform signal processing on the image signal Svd and cause an image corresponding to the signal-processed image signal Svd to be displayed on the display 180. Thus, the image can be stably displayed.

[0246] Figure 8 An internal block diagram of an image display device according to an embodiment of the present application is shown.

[0247] Referring to the drawings, an image display device 100 according to an embodiment of the present application includes a display 180, an interface 610 electrically connected to an external battery device 500 or a mobile terminal 600, a power controller 620 controlling a pull current mode or a sink current mode of the interface 610, an internal battery BTA, and a charge-discharge circuit device 630 controlling a charge mode or a discharge mode of the internal battery BTA.

[0248] On the other hand, the interface 610 of one embodiment of the present application can act in any one of a sink current mode, a sink current mode, and a display mode.

[0249] For example, when acting in the sink current mode, the interface 610 can receive the first direct current Vm or a first direct current IPHm corresponding to the first direct current Vm from the external battery device 500 or the mobile terminal 600.

[0250] On the other hand, when acting in the sink current mode, the interface 610 can supply the third direct current Vn or a third direct current IPHn corresponding to the third direct current Vn to the external battery device 500 or the mobile terminal 600.

[0251] On the other hand, when acting in the display mode, the interface 610 can receive the image signal Svd from the mobile terminal 600.

[0252] On the other hand, the interface 610 can include a USB-C type interface.

[0253] For example, the interface 610 can include a first port PT1 receiving the first direct current Vm in the sink current mode or outputting the third direct current Vn to the outside in the sink current mode, and a second port PT2 receiving voltage information of the battery device 500 or the mobile terminal 600.

[0254] On the other hand, the first port PT1 can be connected with the VBUS line, and the second port PT2 can be connected with the CC1 / 2 line.

[0255] On the other hand, the interface 610 can include a third port PT3 connected with another second bus SBU1 / 2 line in addition to the VBUS line as a first bus.

[0256] On the other hand, the interface 610 can further include a fourth port PT4 and a fifth port PT5 for receiving the image signal Svd from the mobile terminal 600 or transmitting the image signal to the mobile terminal 600 when acting in the display mode.

[0257] On the other hand, the fourth port PT4 can be connected with the TX1 / RX1 line, and the fifth port PT5 can be connected with the TX2 / RX2 line.

[0258] On the other hand, the interface 610 can further include a sixth port PT6 for a USB 2.0 interface.

[0259] On the other hand, the sixth port PT6 can be connected with the USB D+ / D- line.

[0260] On the other hand, the charge-discharge circuit device 630 has a direct current voltage input terminal 632.

[0261] On the other hand, the charge-discharge circuit device 630 can further include a second interface 634 which supplies a voltage or a current to the internal battery BTA in a charging mode of the internal battery BTA and receives a voltage or a current in a discharging mode of the internal battery BTA, and a switching device 636 which performs switching to supply the voltage or the current from the interface 610 to the second interface 634.

[0262] On the other hand, the image display device 100 according to an embodiment of the present application can further include a signal processing device 170 which outputs an image signal to the display 180.

[0263] On the other hand, the image display device 100 according to an embodiment of the present application can further include a dc / dc converter 644 which is electrically connected to the first port PT1.

[0264] On the other hand, the dc / dc converter 644 can be connected between the first port PT1 of the interface 610 and the switch 647.

[0265] On the other hand, the dc / dc converter 644 can reduce a level of the first direct current voltage Vm received through the first port PT1 in a trickle charging mode, and supply the reduced level direct current voltage 5V_TYPE-C to the power controller 620 via the switch 647.

[0266] For example, the dc / dc converter 644 can reduce 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. Thereby, the power controller 620 can stably operate based on the direct current voltage from the external battery device 500 or the mobile terminal 600.

[0267] On the other hand, in a case where the supply of the first direct current voltage Vm through the interface 610 is stopped, the switch 647 can also supply the level-converted direct current voltage 5V_NORMAL to the power controller 620 based on the internal battery BTA.

[0268] On the other hand, the direct current voltage 5V_TYPE-C output from the dc / dc converter 644 can be input to the signal processing device 170.

[0269] At this time, the signal processing device 170 can receive a USB-C_CHG_DET signal related to a trickle charging mode operation based on the direct current voltage 5V_TYPE-C.

[0270] That is, if the level of the USB-C_CHG_DET signal corresponding to the direct current voltage 5V_TYPE-C is a high level, the signal processing device 170 can determine that it is the current-filling mode operation.

[0271] On the other hand, the power controller 620 is electrically connected with the plurality of ports PT2~PT5 of the interface 610, and can receive signals from the plurality of ports PT2~PT5 of the interface 610.

[0272] 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.

[0273] As another example, in the display mode, the power controller 620 can receive the image signal Svd through the fourth port PT4 or the fifth port PT5 of the interface 610, and transmit the image signal Svd to the signal processing device 170 or the power controller 620.

[0274] On the other hand, the power controller 620 can have a plurality of ports to transceive signals with the signal processing device 170.

[0275] For example, the power controller 620 can have 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, and the like.

[0276] On the other hand, in the current-drawing mode, the TYPE-C_VBUS signal can correspond to a signal input to the first port PT1 of the interface 610.

[0277] On the other hand, in the current-drawing mode, the power controller 620 can output a 5V_USB-C_EN signal of a high level, and based on the 5V_USB-C_EN signal, the load switch 645 can be turned on.

[0278] On the other hand, the power controller 620 can determine a first current-filling mode operation or a second current-filling mode operation in the current-filling mode based on voltage information or current information of the battery device 500 or the mobile terminal 600.

[0279] For example, the power controller 620 can output a high-level 65W_USB-C_EN signal for acting based on a first CC / CV mode of 65W (20V / 3.25A) or output a high-level 100W_USB-C_EN signal for acting based on a second CC / CV mode of 100W (20V / 5A) based on voltage information or current information of the battery device 500 or the mobile terminal 600.

[0280] On the other hand, the power controller 620 can output a high-level TYPE-C_VBUS_DISCHARGE signal for discharge of the TYPE-C_VBUS.

[0281] On the other hand, a converter 642 for converting a display signal into an HDMI signal in a display mode can be further included between the power controller 620 and the signal processing device 170.

[0282] On the other hand, the signal processing device 170 can output a reset signal RESET_N to reset the converter 642.

[0283] On the other hand, the image display device 100 according to an embodiment of the present disclosure can further include a load switch 645 electrically connected to the first port PT1 of the interface 610.

[0284] On the other hand, the image display device 100 according to an embodiment of the present disclosure can further include a barrier diode connected between the load switch 645 and the first port PT1 of the interface 610.

[0285] On the other hand, the load switch 645 is turned off in the CCV mode. Thereby, the barrier diode and the first port PT1 of the interface 610 are electrically insulated.

[0286] On the other hand, the load switch 645 can be turned on in the CC mode, and supply a third direct current voltage Vn to the first port PT1 based on conduction of the barrier diode. Thereby, in the CC mode, a direct current voltage can be stably supplied to the external battery device 500 or the mobile terminal 600.

[0287] On the other hand, in the CCV mode, the interface 610 can supply the first direct current voltage Vm received through the first port PT1 to the charge / discharge circuit device 630. Thereby, the internal battery BTA can be conveniently charged through the CCV mode.

[0288] On the other hand, the charge-discharge circuit device 630 can include a direct current voltage input terminal 632, a second interface 634 that supplies a voltage or a current to the internal battery BTA in a charge mode of the internal battery BTA and receives a voltage or a current in a discharge mode of the internal battery BTA, and a switching device 636 that performs switching to supply the voltage or the current from the interface 610 to the second interface 634.

[0289] On the other hand, if the second direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the charge-discharge circuit device 630 can supply a voltage of approximately 13 V to the interface 652 of the main circuit board MD.

[0290] On the other hand, if the second direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the charge-discharge circuit device 630 can transmit a high-level power signal POWER_ACD to the switching device 653 within the main circuit board MD.

[0291] On the other hand, the main circuit board MD can further include a signal receiving device 656 including a first diode to which a 65 W USB-C_EN signal is applied and a second diode to which a 100 W USB-C_EN signal is applied, a second switching device 658 connected to the signal receiving device 656, and the switching device 653 connected at one end between the signal receiving device 656 and the second switching device 658.

[0292] For example, in a case where the second direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the high-level power signal POWER_ACD is input to the switching device 653, and thus the switching device 653 is turned off. Thereby, the second switching device 658 is also turned off.

[0293] Thereby, the 20V_VBUS_ON / OFF signal output from the second switching device 658 becomes a low level, and the switching device 636 within the charge-discharge circuit device 630 is turned off based on the low-level 20V_VBUS_ON / OFF signal.

[0294] Therefore, in a case where the second direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, since the switching device 636 is turned off, the first direct current voltage Vm or the first direct current current IPHm is interrupted from being supplied to the charge-discharge circuit device 630.

[0295] As another example, in a case where the second direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the low-level power signal POWER_ACD is input to the switching device 653, and thus the switching device 653 is turned on.

[0296] On the other hand, in the operation according to the charge current mode, in a case where either of 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 device 658 is also turned on.

[0297] As a result, the 20V VBUS ON / OFF signal output from the second switching device 658 becomes a high level, and the switching device 636 in the charge / discharge circuit device 630 is turned on based on the high-level 20V VBUS ON / OFF signal.

[0298] As a result, in a case where the supply of the second direct-current voltage DC-IN through the direct-current voltage input terminal 632 is stopped, the first direct-current voltage Vm or the first direct-current current IPHm is supplied to the charge / discharge circuit device 630 due to the turning on of the switching device 636. As a result, the internal battery BTA can be stably charged.

[0299] Figures 9a to 10c is a graph illustrating the levels of the respective signals at the time of the operation of the Figure 8 .

[0300] Figure 9a (a) of FIG. 10 is a graph illustrating the levels of the respective signals at the time of the supply and interruption of the supply of the second direct-current voltage DC-IN.

[0301] Referring to the drawings, in a case where the second direct-current voltage DC-IN is supplied, the level of the power signal POWER ACD becomes a high level, and the 20V VBUS ON / OFF signal becomes a low level, and the switching device 636 in the charge / discharge circuit device 630 is turned off. As a result, the charge current mode is interrupted, and the discharge current mode can be executed.

[0302] On the other hand, in a case where the second direct-current voltage DC-IN is not supplied, the level of the power signal POWER ACD becomes a low level, and the 20V VBUS ON / OFF signal becomes a high level, and the switching device 636 in the charge / discharge circuit device 630 is turned on. As a result, the charge current mode can be executed.

[0303] Figure 9a (b) of FIG. 10 is a graph illustrating the first charge current mode and the second charge current mode in the charge current mode.

[0304] Referring to the drawings, the power controller 620 can operate in the charge current mode based on voltage information or current information of the battery device 500 or the mobile terminal 600.

[0305] In this charge current mode, the USB-C CHG DET signal corresponding to the direct-current voltage 5V TYPE-C output from the dc / dc converter 644 electrically connected to the first port PT1 can be a high level.

[0306] On the other hand, 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 in the charge current mode, based on the voltage information or the current information of the battery device 500 or the mobile terminal 600 received through the interface 610.

[0307] On the other hand, the power controller 620 can determine to operate in a first charge current mode or a second charge current mode in the charge current mode, based on the voltage information or the current information of the battery device 500 or the mobile terminal 600. Thereby, various levels of current can be received in the charge current mode.

[0308] For example, if the voltage information or the current information of the battery device 500 or the mobile terminal 600 is greater than or equal to a reference level and less than a first set level, the power controller 620 can be controlled to operate in the first charge current mode, and if it is greater than or equal to the reference level and greater than or equal to the first set level, it can be controlled to operate in the second charge current mode.

[0309] That is, in the case of the first charge current mode, the power controller 620 can output a 65W_USB-C_EN signal of a high level through the I2C_INT / GPIO9, and the level of a 100W_USB-C_EN signal of a low level through the IMON / / GPIO8 port can be low.

[0310] Thereby, in the case of the first charge current mode, the first port PT1 of the interface 610 can receive a first level of current from the battery device 500, and the charge and discharge circuit device 630 can receive the first level of current from the interface 610 and supply the first level of current to the internal battery BTA. The first level at this time can be 0.1C-rate.

[0311] On the other hand, in the case of the second charge current mode, the power controller 620 can output a 65W_USB-C_EN signal of a low level through the I2C_INT / GPIO9, and the level of a 100W_USB-C_EN signal of a high level through the IMON / / GPIO8 port can be low.

[0312] Thereby, in the case of the second charge current mode, the first port PT1 of the interface 610 can receive a second level of current greater than the first level from the battery device 500, and the charge and discharge circuit device 630 can receive the second level of current from the interface 610 and supply the second level of current to the internal battery BTA. The second level at this time can be 0.4C-rate.

[0313] Figure 9bFIG. 1 is a diagram referred to in explaining the operation of the power controller and the signal processing device.

[0314] Referring to the drawings, in the first current-filling mode, in the case where the second DC voltage DC-IN is not supplied, the USB-C_CHG_DET signal can be high, the level of the 100W_USB-C_EN signal output through the IMON / / GPIO8 port can be low, the level of the 65W_USB-C_EN signal output through the I2C_INT / GPIO9 can be high, and the level of the power signal POWER_ACD can be low. At this time, the signal processing device 170 will not output the mode change message PR_Swap.

[0315] On the other hand, in the second current-filling mode, in the case where the second DC voltage DC-IN is not supplied, the USB-C_CHG_DET signal can be high, the level of the 100W_USB-C_EN signal output through the IMON / / GPIO8 port can be high, the level of the 65W_USB-C_EN signal output through the I2C_INT / GPIO9 can be low, and the level of the power signal POWER_ACD can be low. At this time, the signal processing device 170 will not output the mode change message PR_Swap.

[0316] On the other hand, in the first current-filling mode or the second current-filling operation, if the second DC voltage DC-IN is supplied through the DC voltage input terminal 632, the signal processing device 170 can output the mode change message PR_Swap.

[0317] For example, in the first current-filling mode, in the case where the second DC voltage DC-IN is supplied, the USB-C_CHG_DET signal can be high, the level of the 100W_USB-C_EN signal output through the IMON / / GPIO8 port can be low, the level of the 65W_USB-C_EN signal output through the I2C_INT / GPIO9 can be high, and the level of the power signal POWER_ACD can be high. At this time, the signal processing device 170 will output the mode change message PR_Swap.

[0318] As another example, in the second charge current mode, in a case where the second DC voltage DC-IN is not supplied, the USB-C_CHG_DET signal can be a high level, the level of the 100W_USB-C_EN signal output through the IMON / / GPIO8 port can be a high level, the level of the 65W_USB-C_EN signal output through the I2C_INT / GPIO9 can be a low level, and the level of the power signal POWER_ACD can be a high level. At this time, the signal processing device 170 changes the output mode to the swap message PR_Swap.

[0319] On the other hand, the power controller 620 can be controlled to switch from the first charge current mode or the second charge current mode to the pull current mode based on the mode change message PR_Swap.

[0320] On the other hand, the power controller 620 can be controlled to turn on the load switch 645 based on the mode change message PR_Swap, and can be controlled to supply the third DC current IPHn corresponding to the third DC voltage Vn or the third DC voltage Vn to the interface 610 through the load switch 645. Thereby, the pull current mode operation for supplying the DC voltage to the external battery device 500 or the mobile terminal 600 can be performed.

[0321] On the other hand, the power controller 620 can be controlled to supply the third level IPHn of the current smaller than the first level IPHm to the battery device 500 or the mobile terminal 600 through the interface 610 in the pull current mode.

[0322] For example, the first level of the first DC current IPHm in the first charge current mode can be approximately 3.25A, the second level of the first DC current IPHm in the second charge current mode can be approximately 5A, and the third level of the third DC current IPHn in the pull current mode can be approximately 3A.

[0323] Thereby, the pull current mode operation for supplying the DC voltage to the external battery device 500 or the mobile terminal 600 can be stably performed.

[0324] Figure 10a is a figure referred to when explaining the operation of stopping the supply of the second DC voltage through the DC voltage input terminal in the charge current mode.

[0325] Referring to the drawings, in the charge current mode, if the supply of the second DC voltage DC-IN through the DC voltage input terminal 632 is stopped, the power controller 620 is controlled to receive the first DC voltage Vm or the 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.

[0326] On the other hand, the power controller 620 can control to receive, in the charge current mode, 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 the voltage information or the current information of the battery device 500 or the mobile terminal 600 received through the interface 610. Thereby, various levels of current can be received in the charge current mode.

[0327] On the other hand, in the charge current mode, the charge and discharge circuit device 630 can supply the first level of current or the second level of current from the interface 610 to the internal battery BTA. Thereby, in the charge current mode, the internal battery BTA can be charged based on various levels of current.

[0328] Figure 10b is a view referred to in explaining an operation of the charge current mode.

[0329] Referring to the drawings, in the charge current mode, if the second direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the power controller 620 can be controlled to interrupt the reception of the first direct current voltage Vm through the interface 610. Thereby, in the case where the second direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the charge current mode operation can be interrupted.

[0330] On the other hand, in the charge current mode, if the second direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the charge and discharge circuit device 630 can supply a current corresponding to the second direct current voltage DC-IN to the internal battery BTA. Thereby, the internal battery BTA can be conveniently charged through the charge current mode.

[0331] Figure 10c is a view referred to in explaining an operation of the charge current mode.

[0332] Referring to the drawings, in the charge current mode, if the second direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the power controller 620 can be controlled to interrupt the reception of the first direct current voltage Vm through the interface 610. Thereby, in the case where the second direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the charge current mode operation can be interrupted.

[0333] On the other hand, in the sink current mode operation, if the second DC voltage DC-IN is not supplied through the DC voltage input terminal 632, the power controller 620 can be controlled to interrupt the supply of the third DC voltage Vn or the third DC current IPHn corresponding to the third DC voltage Vn through the interface 610. Thus, in the case where the supply of the second DC voltage DC-IN through the DC voltage input terminal 632 is interrupted, the sink current mode operation can be interrupted.

[0334] On the other hand, the interface 610 can transmit the image signal received from the mobile terminal 600 to the signal processing device 170 or the power controller 620 based on the display mode. Thus, the image signal received from the mobile terminal 600 can be conveniently displayed on the display 180 through the display mode.

[0335] On the other hand, in the display mode operation, if the second DC voltage DC-IN is supplied through the DC voltage input terminal 632, the interface 610 can continue to transmit the image signal received from the mobile terminal 600 to the signal processing device 170.

[0336] Thus, even if the 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 mode.

[0337] On the other hand, the image display device 100 according to another embodiment of the present application includes the display 180, the interface 610 electrically connected to the external battery device 500 or the mobile terminal 600, the power controller 620 controlling the sink current mode or the sink current mode of the interface 610, and the DC voltage input terminal 632.

[0338] On the other hand, the power controller 620 according to another embodiment of the present application is controlled to receive the first DC voltage Vm from the battery device 500 or the mobile terminal 600 through the interface 610 in the sink current mode, to interrupt the reception of the first DC voltage Vm through the interface 610 and switch to the sink current mode if the second DC voltage DC-IN is supplied through the DC voltage input terminal 632 in the sink current mode operation, and to supply the third DC voltage Vn to the battery device 500 or the mobile terminal 600 through the interface 610. Thus, the sink current mode operation for supplying the DC voltage to the external battery device 500 or the mobile terminal 600 can be performed.

[0339] Figure 11 is an example of an internal block diagram of an image display device according to another embodiment of the present application.

[0340] Referring to the drawings, an image display apparatus 100b of another embodiment of the present application includes a display 180, an interface 610 electrically connected with an external apparatus 1200, a power controller 620 determining an action mode of a sink current mode or a source current mode or a display mode whenever the external apparatus 1200 is connected with the interface 610, a signal processing apparatus 170b outputting an image signal to the display 180, a resistance element Ro between the power controller 620 and the signal processing apparatus 170b, and a direct current voltage input terminal 632.

[0341] On the other hand, if a direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the power controller 620 is controlled to output a high level signal to the resistance element Ro, and to act in the sink current mode based on the high level signal. Thereby, the sink current mode action for supplying the direct current voltage to the external apparatus 1200 can be performed.

[0342] On the other hand, in the sink current mode action, if the supply of the direct current voltage DC-IN through the direct current voltage input terminal 632 is interrupted, the power controller 620 can be controlled to act in the source current mode. Thereby, the source current mode action for receiving the direct current voltage from the external apparatus 1200 can be performed.

[0343] At this time, the external apparatus 1200 can be a battery apparatus 500 or a mobile terminal 600 or a tablet or a notebook computer, etc.

[0344] On the other hand, the interface 610 of an embodiment of the present application can act in any one of the source current mode, the sink current mode, and the display mode.

[0345] For example, the interface 610 can receive information from the external apparatus 1200 whenever the external apparatus 1200 is connected.

[0346] On the other hand, the power controller 620 can determine whether the interface 610 of the image display apparatus 100b acts in the sink current mode or in the source current mode or in the display mode based on the information received from the external apparatus 1200 whenever the external apparatus 1200 is connected.

[0347] For example, the power controller 620 can determine whether the interface 610 of the image display apparatus 100b acts in the sink current mode or in the source current mode or in the display mode based on a power delivery negotiation with the external apparatus 1200.

[0348] For example, the interface 610 can receive a first direct current voltage Vm or a first direct current current IPHm corresponding to the first direct current voltage Vm from the external apparatus 1200 whenever the interface 610 acts in the source current mode.

[0349] On the other hand, the charge-discharge circuit device 630 can receive the second direct current voltage DC-IN through the direct current voltage input terminal 632.

[0350] On the other hand, when operating in the pull current mode, the interface 610 can supply the third direct current voltage Vn or a third direct current corresponding to the third direct current voltage Vn to the external device 1200 outside.

[0351] On the other hand, when operating in the display mode, the interface 610 can receive the image signal Svd from the external device 1200.

[0352] On the other hand, the interface 610 can include a USB-C type interface.

[0353] For example, the interface 610 can have a first port PT1 to a sixth port PT6, etc.

[0354] The description of the first port PT1 to the sixth port PT6, etc. is referred to Figure 8 Here, it is omitted.

[0355] On the other hand, the charge-discharge circuit device 630 has a direct current voltage input terminal 632.

[0356] On the other hand, the charge-discharge circuit device 630 can further include a second interface 634 that supplies a voltage or a current to the internal battery BTA in a charging mode of the internal battery BTA and receives a voltage or a current in a discharging mode of the internal battery BTA, and a switching device 636 that performs switching to supply a voltage or a current from the interface 610 to the second interface 634.

[0357] On the other hand, the image display device 100b of another embodiment of the present application can further include a dc / dc converter 644 electrically connected to the first port PT1.

[0358] On the other hand, the operation of the dc / dc converter 644 is referred to Figure 8 Here, it is omitted.

[0359] On the other hand, the direct current voltage 5V_TYPE-C output from the dc / dc converter 644 can be input to the signal processing device 170b.

[0360] At this time, the signal processing device 170b can receive a USB-C_CHG_DET signal related to the charge current mode operation based on the direct current voltage 5V_TYPE-C.

[0361] That is, if the level of the USB-C_CHG_DET signal corresponding to the direct current voltage 5V_TYPE-C is a high level, the signal processing device 170b can determine that it is in the charge current mode operation.

[0362] On the other hand, the power controller 620 is electrically connected with the plurality of ports PT2~PT5 of the interface 610, and can receive signals from the plurality of ports PT2~PT5 of the interface 610.

[0363] For example, the power controller 620 can receive voltage information or current information of the external device 1200 through the second port PT2 of the interface 610.

[0364] As another example, in the display mode, the power controller 620 can receive the image signal Svd through the fourth port PT4 or the fifth port PT5 of the interface 610, and transmit the image signal Svd to the signal processing device 170b or the power controller 620.

[0365] On the other hand, the power controller 620 can have a plurality of ports to transceive signals with the signal processing device 170b.

[0366] For example, the power controller 620 can have 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 / MGPIO8 port for transmitting a 100W_USB-C_EN signal, a LOC_PWR_MON port for transmitting a TYPE-C_VBUS_DISCHARGE signal, and the like.

[0367] On the other hand, a resistance element Ro can be configured between the I2C_EN / GPIO10 port of the power controller 620 and the signal processing device 170b.

[0368] For example, the 5V_USB-C_EN signal output from the I2C_EN / GPIO10 port of the power controller 620 can be output to the load switch 645 and the resistance element Ro, respectively.

[0369] On the other hand, the 5V_USB-C_EN signal input to the resistance element Ro can be converted into a 5V_SOURCE_ON signal and input to the signal processing device 170b.

[0370] For example, in the case where the 5V_USB-C_EN signal output from the I2C_EN / GPIO10 port of the power controller 620 is a high level, the load switch 645 is turned on, and the 5V_SOURCE_ON signal of the high level can be input to the signal processing device 170b.

[0371] On the other hand, the signal processing device 170b can be controlled to operate the image display device 100b in a current-pull mode based on a high-level 5V_SOURCE_ON signal.

[0372] On the other hand, in current-pull mode, the TYPE-C_VBUS signal can correspond to the signal input to the first port PT1 of interface 610.

[0373] On the other hand, in the current-pull mode, the power controller 620 can output a high-level 5V_USB-C_EN signal, and based on the 5V_USB-C_EN signal, the load switch 645 can be turned on.

[0374] On the other hand, the power controller 620 can determine whether to operate in the first current sinking mode or the second current sinking mode based on the voltage or current information of the external device 1200.

[0375] For example, the power controller 620 may output a high-level 65W_USB-C_EN signal for a first sinking current mode operation based on voltage or current information from the external device 1200, or output a high-level 100W_USB-C_EN signal for a second sinking current mode operation based on 100W (20V / 5A).

[0376] On the other hand, the power controller 620 can output a high-level TYPE-C_VBUS_DISCHARGE signal for TYPE-C_VBUS discharge.

[0377] On the other hand, a converter 642 may also be included between the power controller 620 and the signal processing device 170b, the converter 642 being used to convert the display signal into an HDMI signal in display mode.

[0378] On the other hand, the signal processing device 170b can output a reset signal RESET_N to reset the converter 642.

[0379] On the other hand, such as Figure 8 As shown, the image display device 100b of another embodiment of the present invention may further include a load switch 645 and a barrier diode.

[0380] On the other hand, the load switch 645 is disconnected in current-sinking mode. As a result, the barrier diode and the first port PT1 of the interface 610 are electrically isolated.

[0381] On the other hand, the load switch 645 can be turned on in current-pull mode, and based on the conduction of the barrier diode, a third DC voltage Vn is supplied to the first port PT1. Thus, in current-pull mode, a stable DC voltage can be supplied to the external device 1200.

[0382] On the other hand, in sinking current mode, interface 610 can supply the first DC voltage Vm received through the first port PT1 to the charging / discharging circuit device 630. Thus, the internal battery BTA can be conveniently charged in sinking current mode.

[0383] On the other hand, the charging and discharging 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 the charging mode and receives voltage or current in the discharging mode of the internal battery BTA; and a switching device 636 that performs a switch to supply voltage or current from the interface 610 to the second interface 634.

[0384] On the other hand, if a second DC voltage DC-IN is supplied through the DC voltage input terminal 632, the charging and discharging circuit device 630 can supply approximately 13V to the interface 652 of the main circuit board MD.

[0385] On the other hand, if a second DC voltage DC-IN is supplied through the DC voltage input terminal 632, the charging and discharging circuit device 630 can transmit a high-level power signal POWER_ACD to the switching device 653 in the main circuit board MD.

[0386] On the other hand, such as Figure 8 As shown, the main circuit board MD may further include: a signal receiving device 656; a second switching device 658 connected to the signal receiving device 656; and a switching device 653, one end of which is connected between the signal receiving device 656 and the second switching device 658.

[0387] For example, if a second DC voltage DC-IN is provided through the DC voltage input terminal 632, a high-level power signal POWER_ACD is input to the switching device 653, thereby turning off the switching device 653. Consequently, the second switching device 658 also turns off.

[0388] As a result, the 20V_VBUS_ON / OFF signal output from the second switching device 658 becomes low, and the switching device 636 in the charging and discharging circuit device 630 disconnects based on the low-level 20V_VBUS_ON / OFF signal.

[0389] Therefore, in a case where the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the first direct-current voltage Vm or the first direct-current current IPHm is interrupted from being supplied to the charge-discharge circuit device 630 due to the switch device 636 being turned off.

[0390] As another example, if the second direct-current voltage DC-IN is supplied through the direct-current voltage input terminal 632, the power signal POWER_ACD of a low level is input to the switch device 653, so that the switch device 653 is turned on.

[0391] On the other hand, in a case where either of the 65W_USB-C_EN signal or the 100W_USB-C_EN signal is at a high level in accordance with the operation in the charge current mode, the signal receiving device 656 is turned on, and the second switch device 658 is also turned on.

[0392] As a result, the 20V_VBUS_ON / OFF signal output from the second switch device 658 becomes at a high level, and the switch device 636 in the charge-discharge circuit device 630 is turned on based on the 20V_VBUS_ON / OFF signal at the high level.

[0393] As a result, in a case where the supply of the second direct-current voltage DC-IN through the direct-current voltage input terminal 632 is stopped, the first direct-current voltage Vm or the first direct-current current IPHm is supplied to the charge-discharge circuit device 630 due to the switch device 636 being turned on. As a result, the internal battery BTA can be stably charged.

[0394] The power controller 620 in the image display device 100b of another embodiment of the present application can determine the operation mode based on information from the external device 1200 when the external device 1200 is connected.

[0395] For example, if the external device 1200 operates in the charge current mode, the power controller 620 in the image display device 100b can be controlled to cause the interface 610 to operate in the charge current mode to supply the direct-current voltage to the external device 1200.

[0396] As another example, if the external device 1200 operates in the charge current mode, the power controller 620 in the image display device 100b can be controlled to cause the interface 610 to operate in the charge current mode to supply the direct-current voltage to the external device 1200.

[0397] As another example, if the external device 1200 operates in the display mode, the power controller 620 in the image display device 100b can be controlled to cause the interface 610 to operate in the display mode to receive the image signal from the external device 1200.

[0398] On the other hand, the power controller 620 in the image display apparatus 100b of another embodiment of the present application can be controlled to supply the third DC voltage Vn or the third DC current IPHn corresponding to the third DC voltage Vn to the external apparatus 1200 through the interface 610 if the second DC voltage DC-IN is supplied through the DC voltage input terminal 632 in the sink current mode operation of the interface 610.

[0399] On the other hand, the power controller 620 in the image display apparatus 100b of another embodiment of the present application can be controlled to supply the third DC voltage Vn or the third DC current IPHn corresponding to the third DC voltage Vn to the external apparatus 1200 through the interface 610 if the second DC voltage DC-IN is supplied through the DC voltage input terminal 632 in the sink current mode operation of the interface 610.

[0400] Figure 12 is an example of a flowchart showing an operation method of the image display apparatus. Figure 11

[0401] Referring to the drawings, the power controller 620 in the image display apparatus 100b of another embodiment of the present application determines whether the external apparatus 1200 is connected to the interface 610 (S1110).

[0402] For example, the power controller 620 in the image display apparatus 100b can receive information from the external apparatus 1200 through the interface 610.

[0403] For example, the information can include voltage information or current information of the connected external apparatus 1200.

[0404] On the other hand, the interface 610 of an embodiment of the present application can operate in any one of the sink current mode, the sink current mode, and the display mode.

[0405] For example, the interface 610 can receive information from the external apparatus 1200 whenever the external apparatus 1200 is connected.

[0406] On the other hand, the power controller 620 can determine whether the interface 610 of the image display apparatus 100b operates in the sink current mode, the sink current mode, or the display mode based on the information received from the external apparatus 1200 whenever the external apparatus 1200 is connected (S1115).

[0407] For example, the power controller 620 can determine whether the interface 610 of the image display apparatus 100b operates in the sink current mode, the sink current mode, or the display mode according to a power delivery negotiation based on the information received from the external apparatus 1200.​

[0408] On the other hand, the power controller 620 in the image display apparatus 100b judges whether it is the display mode (S1120), and if it judges that it is, it can receive the image signal Svd from the external apparatus 1200 and transmit the image signal Svd to the signal processing apparatus 170b.

[0409] On the other hand, in the step S1120, if it is not the display mode, the power controller 620 or the signal processing apparatus 170b in the image display apparatus 100b judges whether it is the pull current mode (S1125), and if it judges that it is, it can judge whether the direct current voltage DC-IN is supplied through the direct current voltage input terminal 632 (S1130).

[0410] For example, in the state where the interface 610 is in the pull current mode, if the direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the charge / discharge circuit apparatus 630 can output the power signal POWER_ACD at a high level and continue to operate in the pull current mode based on this.

[0411] On the other hand, in the step S1130, if the supply of the direct current voltage DC-IN through the direct current voltage input terminal 632 is stopped or interrupted, in order to prevent the voltage of the internal battery BTA from being lowered, etc., the signal processing apparatus 170b can output the mode change message PR_Swap (S1135).

[0412] On the other hand, the interface 610 can switch from the pull current mode to the charge current mode based on the mode change message PR_Swap (S1138).

[0413] On the other hand, in the step S1125, if it is not the pull current mode, the interface 610 of the image display apparatus 100b can operate in the charge current mode.

[0414] On the other hand, in the operation of the interface 610 of the image display apparatus 100b in the charge current mode, the power controller 620 or the signal processing apparatus 170b in the image display apparatus 100b can judge whether the direct current voltage DC-IN is supplied through the direct current voltage input terminal 632 (S1140).

[0415] On the other hand, in the operation of the interface 610 of the image display apparatus 100b in the charge current mode, if the direct current voltage DC-IN is supplied through the direct current voltage input terminal 632, the signal processing apparatus 170b can output the mode change message PR_Swap (S1145).

[0416] On the other hand, interface 610 can switch from current sinking mode to current sourcing mode based on the mode change message PR_Swap (S1148).

[0417] Figures 13a to 13d It is explaining Figure 11 or Figure 12 The action is referenced in the diagram.

[0418] first, Figure 13a Examples Figure 11 or Figure 12 The image display device 100b operates in current sinking mode.

[0419] Referring to the attached diagram, if the power information of the external device 1200 is less than the first reference value, then as follows: Figure 13a As shown in (c), the image display device 100b can interrupt the operation of the current sinking mode.

[0420] On the other hand, if the power information of the external device 1200 is above the first reference value and below the second reference value, then... Figure 13a As shown in (b), the image display device 100b can operate in a first sinking current mode, supplying a first level of current to the internal battery BTA. The first level in this case can be 0.1C-rate.

[0421] On the other hand, if the power information of the external device 1200 is above the second reference value and below the third reference value, then... Figure 13a As shown in (a), the image display device 100b can operate in a second current-sinking mode, supplying a second-level current to the internal battery BTA. The second level in this case can be 0.4C-rate.

[0422] On the other hand, the first reference value, the second reference value, and the third reference value can be 65W, 85W, and 100W respectively, but are not limited to these and can be modified in various ways.

[0423] then, Figure 13b Examples are shown in Figure 11 or Figure 12 In various modes of operation, the image display device 100b interrupts the supply of DC voltage DC-IN through the DC voltage input terminal 632.

[0424] like Figure 13bAs shown in (a), when the DC voltage DC-IN supply is interrupted in the second current-sinking mode, the IMON / / GPIO8 port can output a high-level signal, the I2C_INT / GPIO9 port can output a low-level signal, and the GPIO4 port can output a high-level ALT_MODE_NOTICE signal, a low-level 5V_SOURCE_ON signal, and a low-level POWER_ACD power signal. Therefore, the image display device 100b will continue to operate in the second current-sinking mode.

[0425] like Figure 13b As shown in (b), when the DC voltage DC-IN supply is interrupted in the first current-sinking mode, the IMON / / GPIO8 port can output a low-level signal, the I2C_INT / GPIO9 port can output a high-level signal, and the GPIO4 port can output a high-level ALT_MODE_NOTICE signal, a low-level 5V_SOURCE_ON signal, and a low-level POWER_ACD power signal. Therefore, the image display device 100b will continue to operate in the first current-sinking mode.

[0426] like Figure 13b As shown in (c), when the DC-IN supply is interrupted in display mode, the IMON / / GPIO8 port can output a low-level signal, the I2C_INT / GPIO9 port can output a low-level signal, and the GPIO4 port can output a low-level ALT_MODE_NOTICE signal, a high-level 5V_SOURCE_ON signal, and a low-level POWER_ACD power signal. Therefore, the image display device 100b will continue to operate in display mode.

[0427] like Figure 13b As shown in (d), when the DC voltage DC-IN is interrupted in the current-pull mode, the IMON / / GPIO8 port can output a low-level signal, the I2C_INT / GPIO9 port can output a low-level signal, and the GPIO4 port can output a high-level ALT_MODE_NOTICE signal, a high-level 5V_SOURCE_ON signal, and a low-level power signal POWER_ACD.

[0428] At this time, the signal processing device 170b can output a mode change message PR_Swap. Therefore, the image display device 100b can switch from a current-sinking mode to a first current-sinking mode or a second current-sinking mode based on the mode change message PR_Swap.

[0429] then, Figure 13c Examples are shown in Figure 11 or Figure 12The image display device 100b operates in various modes, and a DC voltage DC-IN is supplied through the DC voltage input terminal 632.

[0430] like Figure 13c As shown in (a), when DC voltage DC-IN is supplied in the second current sinking mode, the IMON / / GPIO8 port can output a high-level signal, the I2C_INT / GPIO9 port can output a low-level signal, and the GPIO4 port can output a high-level ALT_MODE_NOTICE signal, a low-level 5V_SOURCE_ON signal, and a high-level power signal POWER_ACD.

[0431] At this time, the signal processing device 170b can output a mode change message PR_Swap. Therefore, the image display device 100b can switch from the second current sinking mode to the current sourcing mode based on the mode change message PR_Swap.

[0432] like Figure 13c As shown in (b), when DC voltage DC-IN is supplied in the first current sinking mode, the IMON / / GPIO8 port can output a low-level signal, the I2C_INT / GPIO9 port can output a high-level signal, and the GPIO4 port can output a high-level ALT_MODE_NOTICE signal, a low-level 5V_SOURCE_ON signal, and a high-level power signal POWER_ACD.

[0433] At this time, the signal processing device 170b can output a mode change message PR_Swap. Therefore, the image display device 100b can switch from the first current sinking mode to the current sourcing mode based on the mode change message PR_Swap.

[0434] like Figure 13c As shown in (c), when a DC voltage DC-IN is supplied in display mode, the IMON / / GPIO8 port can output a low-level signal, the I2C_INT / GPIO9 port can output a low-level signal, and the GPIO4 port can output a low-level ALT_MODE_NOTICE signal, a high-level 5V_SOURCE_ON signal, and a high-level POWER_ACD power signal. Therefore, the image display device 100b will continue to operate in display mode.

[0435] like Figure 13cAs shown in (d), when a DC voltage DC-IN is supplied in the current-pull mode, the IMON / / GPIO8 port can output a low-level signal, the I2C_INT / GPIO9 port can output a low-level signal, and the GPIO4 port can output a high-level ALT_MODE_NOTICE signal, a high-level 5V_SOURCE_ON signal, and a high-level power signal POWER_ACD. Therefore, the image display device 100b will continue to operate in the current-pull mode.

[0436] Figure 13d An example is provided to illustrate the actions taken when changing modes based on the mode change message PR_Swap from the signal processing device 170b.

[0437] Refer to the attached diagram, as follows Figure 13d As shown in (a), if the DC voltage DC-IN is interrupted, the image display device 100b operates in the second current sinking mode, and can output a low-level power signal POWER_ACD, the IMON / / GPIO8 port can output a high-level signal, and the I2C_INT / GPIO9 port can output a low-level signal and a low-level 5V_SOURCE_ON signal.

[0438] like Figure 13d As shown in (b), if the DC voltage DC-IN is interrupted, the image display device 100b operates in the first sinking current mode, and can output a low-level power signal POWER_ACD. The IMON / / GPIO8 port can output a low-level signal, and the I2C_INT / GPIO9 port can output a high-level signal and a low-level 5V_SOURCE_ON signal.

[0439] like Figure 13d As shown in (c), if a DC voltage DC-IN is supplied, the image display device 100b operates in current-pull mode and can output a high-level power signal POWER_ACD. The IMON / / GPIO8 port can output a low-level signal, and the I2C_INT / GPIO9 port can output a low-level signal and a high-level 5V_SOURCE_ON signal.

[0440] The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments described above. It will be apparent to those skilled in the art that various modifications can be made without departing from the spirit of the invention as claimed in the claims. Such modifications should not be understood separately from the technical concept or prospect of the present invention.

Claims

1. An image display device, wherein, comprises: a display; an interface electrically connected to an external battery device or a mobile terminal; a power controller that controls a sink current mode or a sink current mode of the interface; an internal battery; and a charge / discharge circuit device having a direct current voltage input terminal that controls a charging mode or a discharging mode of the internal battery; in the sink current mode, if supply of a direct current voltage through the direct current voltage input terminal is stopped, the power controller controls to receive a first direct current voltage from the battery device or the mobile terminal through the interface; if a second direct current voltage is supplied through the direct current voltage input terminal, the power controller controls to supply a third direct current voltage to the battery device or the mobile terminal through the interface based on the sink current mode.

2. The image display device according to claim 1, wherein in the sink current mode, if the second direct current voltage is supplied through the direct current voltage input terminal, the power controller controls to interrupt reception of the first direct current voltage through the interface.

3. The image display device according to claim 1, wherein in the sink current mode operation, if supply of the second direct current voltage through the direct current voltage input terminal is interrupted, the power controller controls to interrupt supply of the third direct current voltage through the interface.

4. The image display device according to claim 2, wherein if the second direct current voltage is supplied through the direct current voltage input terminal, the charge / discharge circuit device supplies a current corresponding to the second direct current voltage to the internal battery.

5. The image display device according to claim 1, wherein the power controller controls 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 in the sink current mode, based on voltage information or current information of the battery device or the mobile terminal received through the interface.

6. The image display device according to claim 5, wherein in the sink current mode, the charge / discharge circuit device supplies the first level of current or the second level of current from the interface to the internal battery.

7. The image display device according to claim 5, wherein the power controller controls to supply a third level of current less than the first level to the battery device or the mobile terminal through the interface in the sink current mode.

8. The image display device according to claim 1, wherein further comprising a signal processing device that outputs an image signal to the display; the interface transmits an image signal received from the mobile terminal to the signal processing device or the power controller based on a display mode.

9. The image display device according to claim 8, wherein in the display mode operation, if the second direct current voltage is supplied through the direct current voltage input terminal, the interface continues to transmit the image signal received from the mobile terminal to the signal processing device or the power controller. ​ 10.The image display apparatus according to claim 1, wherein the interface comprises: a first port that receives the first DC voltage in the charge current mode or that externally outputs the third DC voltage in the discharge current mode; and a second port that receives voltage information of the battery apparatus or the mobile terminal. 11.The image display apparatus according to claim 10, wherein it further comprises a load switch electrically connected to the first port; the load switch is turned off in the charge current mode and is turned on in the discharge current mode to supply the third DC voltage to the first port. 12.The image display apparatus according to claim 10, wherein in the charge current mode, the interface supplies the charge and discharge circuit apparatus with the first DC voltage received through the first port. 13.The image display apparatus according to claim 10, wherein it further comprises a DC-DC converter electrically connected to the first port; in the charge current mode, the DC-DC converter reduces the level of the first DC voltage received through the first port and supplies the reduced level DC voltage to the power controller. 14.The image display apparatus according to claim 1, wherein it further comprises a signal processing apparatus that outputs a mode change message if the second DC voltage is supplied through the DC voltage input terminal in the charge current mode operation; the power controller is controlled to switch from the charge current mode to the discharge current mode based on the mode change message. 15.The image display apparatus according to claim 14, wherein it further comprises a load switch electrically connected to the interface; the power controller is controlled to turn on the load switch based on the mode change message and to supply the third DC voltage to the interface through the load switch. comprises: a display; an interface electrically connected to an external battery apparatus or a mobile terminal; a power controller that controls a discharge current mode or a charge current mode of the interface; and a DC voltage input terminal; in the charge current mode, the power controller is controlled to receive a first DC voltage from the battery apparatus or the mobile terminal through the interface; in the charge current mode operation, if a second DC voltage is supplied through the DC voltage input terminal, the power controller is controlled to interrupt the reception of the first DC voltage through the interface and to switch to the discharge current mode to supply a third DC voltage to the battery apparatus or the mobile terminal through the interface. 17.The image display apparatus according to claim 16, wherein it further comprises a signal processing apparatus that outputs a mode change message if the second DC voltage is supplied through the DC voltage input terminal in the charge current mode operation; the power controller is controlled to switch from the charge current mode to the discharge current mode based on the mode change message. 18.The image display apparatus according to claim 17, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ 16. An image display device, wherein, ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ a load switch electrically connected to the interface; the power controller is controlled to turn on the load switch and supply the third direct-current voltage to the interface through the load switch based on the mode change message.

19. An image display device, wherein, comprises: a display; an interface electrically connected to an external device; a power controller that determines an operation mode of a pull-up current mode or a pull-down current mode or a display mode whenever the external device is connected to the interface; a signal processing device that outputs an image signal to the display; a resistive element between the power controller and the signal processing device; and a direct-current voltage input terminal; if a direct-current voltage is supplied through the direct-current voltage input terminal, the power controller is controlled to output a high-level signal to the resistive element and operate in the pull-up current mode based on the high-level signal.

20. The image display device according to claim 19, wherein in the operation in the pull-up current mode, if the supply of the direct-current voltage through the direct-current voltage input terminal is interrupted, the power controller is controlled to operate in the pull-down current mode. ​

Images