Display device and method for controlling a display device

Abstract

In a display device and a method for driving the same according to an embodiment of the present invention, when a control signal is received from an external device via an external device interface, the display device can adaptively determine whether or not to process the received control signal according to a user's content display environment. A display device according to an embodiment of the present invention may include: an external device interface; a display for displaying content; and a controller that receives a power-off request signal from an external device connected via the interface; and, when it is determined that the content displayed on the display is not from the external device, ignores the power-off request signal received from the external device and does not process it.

Description

Technical area

[0001] The present disclosure relates to a display device and a method for controlling the display device.

[0002] The present disclosure relates to a display device connected to an external device via an external device interface providing an HDMI function, and a method of driving the same.

[0003] The present disclosure relates to a display device connected to a plurality of external devices via an external device interface providing an HDMI function, and a method for driving the same.

[0004] The present disclosure relates to a display device connected to an external device interface providing an HDMI function and a network interface accessing a network, and a method of driving the same. State of the art

[0005] The display device may display content provided by an external device (e.g., a set-top box, a Blu-ray player, a DVD player, or the like) and may also display content provided via a content delivery application of the display device (e.g., live TV; OTT, Over The Top, or the like).

[0006] Displays and external devices can be connected via HDMI (High Definition Multimedia Interface). HDMI is an uncompressed digital video / audio interface standard that provides an uncompressed, all-digital audio / video interface between HDMI-enabled audio / video devices such as set-top boxes, Blu-ray players, DVD players, and A / V receivers.

[0007] HDMI offers HDMI-CEC (Consumer Electronics Control) functionality. HDMI-CEC is a technology that allows simultaneous control of multiple HDMI-connected devices with a single remote control. HDMI-CEC is a bidirectional, single-wire serial bus based on the HDMI protocol.

[0008] One advantage of connecting a display that supports HDMI-CEC and a side-by-side device or Blu-ray player is that things like turning the TV on and off, adjusting the volume, or changing channels can be done simultaneously and conveniently using a single remote control.

[0009] If multiple external devices are connected to the display and the user does not want to use the CEC function, it is inconvenient to disable the CEC function on each external device or to completely disable the CEC function. Furthermore, the CEC function may operate unstably due to functional inconsistencies between product manufacturers or product types.

[0010] When an external device is connected to the display via HDMI, using the HDMI-CEC function may allow the user to use the display and the device more conveniently, but it may also result in errors or unintentional operations by the user, or the display or external device may stop working. RevelationTechnical Problem

[0011] The present disclosure provides a display device capable of preventing an operation unintended by a user from being performed in a display device used by the user due to a control signal input from an external device connected to the display device, and a method for driving the display device.

[0012] The present disclosure relates to a display device that can process a power-on signal input from an external device and an input switching request losslessly in the display device when a user requests power-on of an external device connected to the display device while the display device is turned off, and a method for driving the display device.

[0013] The present disclosure provides a display device that can quickly send a control signal or data from the display device to an external device connected to the display device via a network and HDMI, and a method for driving the display device. Technical solution

[0014] According to a display device and a method for driving the same according to an embodiment of the present disclosure, when a control signal is received from an external device via an external device interface, a decision as to whether or not to process the received control signal for the display device can be made adaptively according to the user's content display environment.

[0015] A display device according to an embodiment of the present disclosure may include an external device interface; a display that displays content; a controller that receives a power-off request signal from an external device connected via the external device interface, and ignores and does not process the power-off request signal received from the external device when it is determined that the content displayed on the display is not provided by the external device.

[0016] According to a display device according to an embodiment of the present disclosure, the controller may process turning off the display device in response to the turn-off request signal received from the external device when it is determined that the content displayed on the display is content provided by the external device.

[0017] According to a display device according to an embodiment of the present disclosure, the external device interface and the external device may be connected using an HDMI protocol, and the power-off request signal may be sent from the HDMI-CEC (Consumer Electronics Control) power synchronization function of the external device.

[0018] According to a display device according to an embodiment of the present disclosure, the external device connected via the external device interface may include a first external device and a second external device, and when the content provided by the first external device is displayed on the display, the controller may ignore and not process the power-off request signal when the power-off request signal is received from the second external device.

[0019] According to a display device according to an embodiment of the present disclosure, when the content provided by the first external device is displayed on the display, the controller may process turning off the display device in response to the power-off request signal when the power-off request signal is received from the first external device.

[0020] According to a display device according to an embodiment of the present disclosure, the content displayed on the display may be displayed as a foreground on the display.

[0021] According to a display device according to an embodiment of the present disclosure, when the content displayed on the display is displayed by a content providing application provided by the display device, the controller may ignore and not process the power-off request signal.

[0022] According to a display device according to an embodiment of the present disclosure, the controller may determine whether to process the received control signal from the external device connected via the external device interface, and filter and process the received control signal according to the manufacturer of the external device or the type of the external device.

[0023] A display device according to an embodiment of the present disclosure may further include a memory that stores an input switching request signal received from the external device connected via the external device interface, wherein, when the display device is turned off, the controller processes initialization of the display device in response to the power-on request signal when a power-on request signal and the input switching request signal are received from the external device, and processes input switching to the external device according to the input switching request signal stored in the memory when initialization of the display device is completed.

[0024] According to an embodiment of the present disclosure, a display device may further comprise a network interface that accesses a network, wherein the controller sends a control signal or data to be sent to the external device via the network interface when the external device connected via the external device interface is also connected via the network interface.

[0025] A method for controlling a display device according to an embodiment of the present disclosure may include receiving a power-off request signal from an external device connected via an external device interface; determining whether the content displayed on the display is content provided by the external device; and ignoring and not processing the power-off request signal received from the external device when the controller determines that the content displayed on the display is not content provided by the external device.

[0026] According to a method for driving a display device according to an embodiment of the present disclosure, the controller may process turning off the display device in response to the power-off request signal received from the external device when it is determined that the content displayed on the display is content provided by the external device.

[0027] According to a method for driving a display device according to an embodiment of the present disclosure, the external device interface and the external device may be connected using an HDMI protocol, and the power-off request signal may be sent from the HDMI-CEC (Consumer Electronics Control) power synchronization function of the external device.

[0028] According to a method for driving a display device according to an embodiment of the present disclosure, when a content provided from a first external device connected via the external device interface is displayed on the display, the controller may ignore the power-off request signal and not process it when the power-off request signal is received from the second external device connected via the external device interface.

[0029] According to a method for driving a display device according to an embodiment of the present disclosure, when the content provided by the first external device is displayed on the display, the controller may process turning off the display device in response to the power-off request signal when the power-off request signal is received from the first external device.

[0030] According to a method for driving a display device according to an embodiment of the present disclosure, the content displayed on the display may be displayed as a foreground on the display.

[0031] According to a method for controlling a display device according to an embodiment of the present disclosure, when the content displayed on the display is displayed by a content providing application provided by the display device, the controller may ignore and not process the power-off request signal.

[0032] According to a method for driving a display device according to an embodiment of the present disclosure, the controller may determine whether to process the received control signal from the external device connected via the external device interface, and filter and process the received control signal according to the manufacturer of the external device or the type of the external device.

[0033] According to a method for driving a display device according to an embodiment of the present disclosure, when the display device is turned off, when a power-on request signal and an input switching request signal are received from the external device, the controller may store the input switching request signal in the memory while processing the initialization of the display device in response to the power-on request signal, and when the initialization of the display device is completed, the controller may process the input switching to the external device according to the input switching request signal stored in the memory.

[0034] According to a method for controlling a display device according to an embodiment of the present disclosure, when the external device connected via the external device interface is also connected via a network interface to access a network, the control may send a control signal or data to be sent via the network interface to the external device. Advantageous effect

[0035] According to the display device and the method for controlling the display device according to the embodiment of the present disclosure, it is possible to prevent an operation unintended by the user from occurring on the display device used by the user due to a control signal input by an external device connected to the display device.

[0036] According to a display device and a method for driving a display device according to an embodiment of the present disclosure, when a user requests to turn on an external device connected to the display device while the display device is turned off, a power-on signal and an input switching request input from the external device can be processed without being lost in the display device.

[0037] According to the display device and the driving method of the display device according to the embodiment of the present disclosure, a control signal or data can be quickly sent from the display device to an external device connected to the display device via a network and HDMI. Description of the drawings Fig. 1 is a block diagram illustrating a configuration of a display device according to an embodiment of the present disclosure. Fig. 2 is a block diagram illustrating a remote control device according to an embodiment of the present disclosure. Fig. 3 is a view illustrating an actual configuration of a remote control device according to an embodiment of the present disclosure. Fig. 4 is a view showing an example of use of the remote control device according to an embodiment of the present disclosure. Fig. 5 is a block diagram illustrating a display device according to an embodiment of the present disclosure. Fig. 6 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure. Fig. 7 is a diagram illustrating an input / output configuration of HDMI according to an embodiment of the present disclosure. Fig. 8 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure. Fig. 9 is a block diagram illustrating a display device according to an embodiment of the present disclosure. Fig. 10 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure. Fig. 11 is a block diagram illustrating a display device according to an embodiment of the present disclosure. Fig. 12 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure. Best mode

[0038] Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The component suffixes "interface," "module," and "unit" used in the description are used or interchanged for convenience of description and do not have a distinct meaning or function in themselves.

[0039] A display device according to an embodiment of the present disclosure, for example, as an artificial display device that provides a computer support function in addition to the broadcast reception function, may have a user-friendly interface such as an input device, a touchscreen, or a spatial remote control that provides an Internet function in addition to the broadcast reception function. Thanks to the support of a wired or wireless Internet function, email, Internet browsing, banking, or gaming can be used via the Internet and computers. A standardized general-purpose operating system can be used for these various functions.

[0040] Since various applications can be arbitrarily added to or removed from a universal operating system kernel, a display device described here, for example, can perform various user-friendly functions. Specifically, the display device can be a network TV, a hybrid broadcast broadband TV (HBBTV), a smart TV, an LED TV, an OLED TV, etc., and in some cases, it can also be applied to a smartphone.

[0041] Fig. 1 is a block diagram illustrating a configuration of a display device according to an embodiment of the present disclosure.

[0042] With reference to Fig. 1, a display device 100 may include a broadcast receiving module 130, an external device interface unit 135, a storage unit 140, a user input unit 150, a control unit 170, a wireless communication interface unit 173, a display unit 180, an audio output unit 185, and a power supply unit 190.

[0043] The broadcast reception module 130 may include a tuner 131, a demodulator 132 and a network interface 133.

[0044] The tuner 131 can select a specific broadcast channel according to a channel selection command. The tuner 131 can receive broadcast signals for the selected specific broadcast channel.

[0045] The demodulation unit 132 may divide the received broadcast signals into video signals, audio signals, and data signals associated with the broadcast program, and restore the divided video signals, audio signals, and data signals into a form available for output.

[0046] The external device interface unit 135 may receive an application or an application list in a neighboring external device and transmit the application or the application list to the control unit 170 or the storage unit 140.

[0047] The external device interface unit 135 can provide a connection between the display device 100 and an external device. The external device interface unit 135 can receive an image and / or audio output from an external device wirelessly or wired to the display device 100 and forward the received image or audio to the controller. The external device interface unit 135 can include a plurality of external input ports. The plurality of external input ports can include an RGB port, at least one HDMI (High Definition Multimedia Interface) port, and a component port.

[0048] An image signal from an external device input via the external device interface unit 135 can be output via the display unit 180. An audio signal from an external device input via the external device interface unit 135 can be output via the audio output unit 185.

[0049] An external device connectable to the external device interface unit 135 may be a set-top box, a Blu-ray player, a DVD player, a game console, a soundbar, a smartphone, a PC, a USB storage device, or a home theater system, but this is only an example.

[0050] The network interface 133 may provide an interface for connecting the display device 100 to a wired / wireless network, including the Internet. The network interface 133 may send or receive data to or from another user or electronic device via an accessed network or another network connected to the network.

[0051] In addition, some of the content data stored on the display device 100 may be sent to a user or electronic device selected from other users or other electronic devices registered in advance on the display device 100.

[0052] The network interface unit 133 can access a predetermined web page via a network or another network connected thereto. That is, the network interface unit 133 can send data to or receive data from a corresponding server by accessing a predetermined web page via the network.

[0053] The network interface unit 133 can receive content or data from a content provider or network operator. That is, the network interface unit 133 can receive content such as movies, advertisements, games, VODs, and broadcast signals provided by the content provider or network operator, as well as related information, via the network.

[0054] In addition, the network interface unit 133 can receive firmware update information and update files provided by the network operator, and can send data to the Internet or the content provider or the network operator.

[0055] The network interface 133 can select and receive a desired application from applications accessible via the network.

[0056] The storage unit 140 can store signal-processed image, voice, or data signals stored by a program in sequence for each signal processing and control in the control unit 170.

[0057] In addition, the storage unit 140 can perform a function of temporarily storing image, voice, or data signals output from the external device interface unit 135 or the network interface unit 133, and can store information about a predetermined image through a channel memory function.

[0058] The storage unit 140 can store an application or an application list input from the external device interface unit 135 or the network interface unit 133.

[0059] The display device 100 can play back content files (e.g., video files, still image files, music files, document files, application files, etc.) stored in the storage unit 140 and provide the content files to a user.

[0060] The user input unit 150 can send signals input by the user to the control unit 170 or can send signals from the control unit 170 to the user. For example, the user input unit 150 can receive or process control signals such as power on / off, channel selection, and screen settings from the remote control 200, or send control signals from the control unit 170 to the remote control 200. This is done via various communication methods such as Bluetooth, ultra-wideband (WB), ZigBee, radio frequency (RF), and infrared communication methods.

[0061] In addition, the user input unit 150 can send control signals input from local buttons (not shown), such as a power button, a channel button, a volume button, and a setting button, to the control unit 170.

[0062] Image signals processed by the control unit 170 can be input to the display unit 180 and displayed as images corresponding to the image signals. Furthermore, image signals processed by the control unit 170 can be input to an external output device via the external device interface unit 135.

[0063] Voice signals processed by the control unit 170 can be output to the audio output unit 185. Furthermore, voice signals processed by the control unit 170 can be input to the external output device via the external device interface unit 135.

[0064] In addition, the control unit 170 can control an overall operation of the display device 100.

[0065] Furthermore, the control unit 170 can control the display device 100 by a user command or an internal program input via the user input unit 150 and can access the network to download a desired application or application list to the display device 100.

[0066] The control unit 170 can output channel information selected by a user along with the processed image or voice signals via the display unit 180 or the audio output unit 185.

[0067] In addition, the control unit 170 can output image signals or voice signals of an external device such as a camera or a camcorder, which are input via the external device interface unit 135, via the display unit 180 or the audio output unit 185 according to an image reproduction command of the external device received via the user input unit 150.

[0068] Furthermore, the control unit 170 can control the display unit 180 to display images, and can control the display unit 180 to display broadcast images input via the tuner 131, images input via the external device interface unit 135, images input via the network interface unit, or images stored in the storage unit 140. In this case, an image displayed on the display unit 180 can be a still image or a video, or a 2D image or a 3D image.

[0069] In addition, the control unit 170 can reproduce contents stored on the display device 100, received broadcast contents, and externally inputted external contents, and the contents can be in various formats such as broadcast images, externally inputted images, audio files, still images, accessed web screens, and document files.

[0070] Furthermore, the wireless communication unit 173 can communicate with an external device via a wired or wireless connection. The wireless communication unit 173 can perform short-range communication with an external device. To this end, the wireless communication unit 173 can support short-range communication using at least one of Bluetooth, Bluetooth Low Energy (BLE), radio frequency identification (RFID), infrared data association (IrDA), ultra-wideband (UWB), ZigBee, near-field communication (NFC), wireless fidelity (Wi-Fi), Wi-Fi Direct, and wireless universal serial bus (USB).The wireless communication unit 173 may support wireless communication between the display device 100 and a wireless communication system, between the display device 100 and another display device 100, or between networks including the display device 100 and another display device 100 (or an external server) via wireless networks. The wireless networks may be wireless personal networks.

[0071] The other display device 100 may be a mobile terminal, such as a wearable device (e.g., a smartwatch, data glasses, or a head-mounted display, HMD), or a smartphone that can exchange data with (or interact with) the display device 100. The wireless communication unit 173 may detect a nearby wearable device capable of communicating with the display device 100.

[0072] If the detected portable device is a device authenticated to communicate with the display device 100, the control unit 170 may further transmit at least part of the data processed in the display device 100 to the portable device via the wireless communication unit 173. Therefore, a user of the portable device may use the data processed by the display device 100 via the portable device.

[0073] The display unit 180 may convert image signals, data signals, or on-screen display (OSD) signals processed in the control unit 170, or image signals or data signals received in the external device interface unit 135, into R, G, and B signals to generate drive signals.

[0074] In addition, the Fig. 1 is only one embodiment of the present disclosure, and therefore, some of the components shown may be integrated, added, or omitted according to the specification of the actually implemented display device 100.

[0075] That is, if necessary, two or more components may be integrated into one component, or one component may be split into two or more components. Furthermore, a function performed by each block is to describe an embodiment of the present disclosure, and its specific operation or device does not limit the scope of the present disclosure.

[0076] According to another embodiment of the present disclosure, the display device 100, unlike Fig. 1, receive images via the network interface unit 133 or the external device interface unit 135 and reproduce them without including the tuner 131 and the demodulation unit 132.

[0077] For example, the display device 100 may be divided into an image processing device, such as a set-top box, for receiving broadcast signals or contents corresponding to various network services and a content playback device for playing contents input from the image processing device.

[0078] In this case, an operation method of a display device according to an embodiment of the present disclosure described below may be implemented by one of the methods described with reference to Fig. 1, an image processing device such as the separate auxiliary device, and a content playback device including the display unit 180 and the audio output unit 185.

[0079] A remote control device according to an embodiment of the present disclosure will be described with reference to Fig. 2 and Fig. 3 described.

[0080] Fig. 2 is a block diagram illustrating a remote control device according to an embodiment of the present disclosure, and Fig. 3 is a view illustrating an actual configuration of a remote control device according to an embodiment of the present disclosure.

[0081] First, with reference to Fig. 2, a remote control device 200 includes a fingerprint recognition unit 210, a wireless communication unit 220, a user input unit 230, a sensor unit 240, an output unit 250, a power supply unit 260, a storage unit 270, a control unit 280, and a sound detection unit 290.

[0082] With reference to Fig. 2, the wireless communication unit 220 sends / receives signals to / from any display device according to the above-mentioned embodiments of the present disclosure.

[0083] The remote control device 200 may include a radio frequency (RF) module that can send and receive signals to and from the display device 100 according to an RF communication standard, and an IR module 223 that can send and receive signals to and from the display device 100 according to an IR communication standard. In addition, the remote control 200 may include a Bluetooth module 225 that can send and receive signals to and from the display device 100 according to a Bluetooth communication standard. In addition, the remote control 200 may include an NFC module 227 that can send and receive signals to and from the display device 100 according to an NFC communication standard, and a WLAN module 229 that can send and receive signals to and from the display device 100 according to a WLAN communication standard.

[0084] Furthermore, the remote control device 200 can send signals containing information about the movement of the remote control device 200 to the display device 100 via the wireless communication unit 220.

[0085] In addition, the remote control device 200 can receive signals sent from the display device 100 via the RF module 221 and can send a command for powering on / off, changing channels, and changing the volume to the display device 100 via the IR module 223 when needed.

[0086] The user input unit 230 may be configured with a keypad, a button, a touchpad, or a touchscreen. A user may operate the user input unit 230 to input a command related to the display device 100 into the remote control 200. If the user input unit 230 has a hard key, a user may input a command related to the display device 100 into the remote control 200 by pressing this hard key. This is illustrated by Fig. 3 explained.

[0087] With reference to Fig. 3, the remote control device 200 may include a plurality of buttons. The plurality of buttons may include a fingerprint recognition button 212, a power button 231, a home button 232, a live button 233, an external input button 234, a volume adjustment button 235, a voice recognition button 236, a channel change button 237, an OK button 238, and a back button 239.

[0088] The fingerprint recognition button 212 may be a button for recognizing a user's fingerprint. According to one embodiment of the present disclosure, the fingerprint recognition button 212 may perform a print operation and receive a print operation and a fingerprint recognition operation.

[0089] The power switch 231 may be a switch for turning the display device 100 on / off.

[0090] The home button 232 may be a button for switching to the home screen of the display device 100.

[0091] The Live button 233 may be a button for displaying live broadcast programs.

[0092] The external input button 234 may be a button for receiving an external input connected to the display device 100.

[0093] The volume adjustment button 235 may be a button for controlling a volume output from the display device 100.

[0094] The voice recognition button 236 may be a button for receiving a user's voice and recognizing the received voice.

[0095] The channel change button 237 may be a button for receiving broadcast signals of a specific broadcast channel.

[0096] The OK button 238 may be a button for selecting a particular function and the Back button 239 may be a button for returning to a previous screen.

[0097] Fig. 2 is described again.

[0098] If the user input unit 230 includes a touchscreen, a user may touch a softkey of the touchscreen to input a command related to the display device 100 into the remote control device 200. Furthermore, the user input unit 230 may include various types of input interfaces operable by a user, such as a scroll key and a rotary knob key, and this embodiment does not limit the scope of the present disclosure.

[0099] The sensor unit 240 may include a gyro sensor 241 or an acceleration sensor 243. The gyro sensor 241 may detect information about the movement of the remote control device 200.

[0100] For example, the gyro sensor 241 may detect information about an operation of the remote control device 200 based on the x-, y-, and z-axes, and the acceleration sensor 243 may detect information about a movement speed of the remote control device 200. Furthermore, the remote control device 200 may further include a distance measuring sensor that detects a distance relative to the display unit 180 of the display device 100.

[0101] The output unit 250 may output image or voice signals in response to the operation of the user input unit 230, or output image or voice signals corresponding to the signals sent from the display device 100.

[0102] A user can recognize whether the user input unit 230 is operated or whether the display device 100 is controlled via the output unit 250.

[0103] For example, the output unit 250 may include an LED module 251 for flashing, a vibration module 253 for generating vibrations, a sound output module 255 for outputting sound, or a display module 257 for outputting an image when the user input unit 230 is operated or signals are sent / received to / from the display device 100 via the wireless communication unit 220.

[0104] In addition, the power supply unit 260 supplies power to the remote control device 200 and cuts off the power supply when the remote control device 200 does not move for a predetermined time, so that power waste can be reduced.

[0105] The power supply unit 260 can resume power supply when a predetermined button provided on the remote control device 200 is pressed.

[0106] The storage unit 270 can store various types of programs and application data required to control or operate the remote control device 200.

[0107] When the remote control device 200 transmits / receives signals wirelessly via the display device 100 and the RF module 221, the remote control device 200 and the display device 100 transmit / receive signals over a predetermined frequency band.

[0108] The control unit 280 of the remote control device 200 may store and reference information on a frequency band for transmitting / receiving signals to / from the display device 100 paired with the remote control device 200 in the storage unit 270.

[0109] The control unit 280 controls general matters related to the control of the remote control device 200. The control unit 280 may send a signal corresponding to a predetermined key operation of the user input unit 230 or a signal corresponding to the movement of the remote control device 200 detected by the sensor unit 240 to the display device 100 via the wireless communication unit 220.

[0110] In addition, the sound detection unit 290 of the remote control device 200 can detect speech.

[0111] The sound capture unit 290 may include at least one microphone and capture speech via the microphone.

[0112] Next, Fig. 4 described.

[0113] Fig. 4 is a view illustrating an example of use of a remote control device according to an embodiment of the present disclosure.

[0114] Fig. 4(a) illustrates that a pointer 205 corresponding to the remote control device 200 is displayed on the display unit 180.

[0115] A user can move or rotate the remote control 200 vertically or horizontally. The pointer 205 displayed on the display unit 180 of the display 100 corresponds to a movement of the remote control 200. Since the corresponding pointer 205 is moved and displayed according to a movement in three-dimensional space, as shown in the drawing, the remote control 200 can be referred to as a spatial remote control.

[0116] Fig. 4(b) illustrates that when a user moves the remote control device 200, the pointer 205 displayed on the display unit 180 of the display device 100 is moved to the left in accordance with the movement of the remote control device 200.

[0117] Information about a movement of the remote control device 200, detected by a sensor of the remote control device 200, is sent to the display device 100. The display device 100 can calculate the coordinates of the pointer 205 from the information about the movement of the remote control device 200. The display device 100 can display the pointer 205 so that it corresponds to the calculated coordinates.

[0118] Fig. 4(c) illustrates that a user moves the remote control device 200 away from the display unit 180 while pressing a specific button on the remote control device 200. This allows a selected area in the display unit 180 corresponding to the pointer 205 to be zoomed in and displayed in an enlarged manner.

[0119] On the other hand, when a user moves the remote control device 200 close to the display unit 180, a selection area in the display unit 180 corresponding to the pointer 205 can be zoomed out and displayed in a reduced size.

[0120] On the other hand, when the remote control device 200 is moved away from the display unit 180, a selection area can be zoomed out, and when the remote control device 200 is moved closer to the display unit 180, a selection area can be zoomed in.

[0121] Furthermore, if a specific button on the remote control 200 is pressed, detection of vertical or horizontal movement can be excluded. This means that if the remote control 200 is moved away from or closer to the display unit 180, up, down, left, or right movement cannot be detected, only forward and backward movement. If a specific button on the remote control 200 is not pressed, only the pointer 205 moves up, down, left, or right according to the movement of the remote control 200.

[0122] Furthermore, the moving speed or moving direction of the pointer 205 may correspond to the moving speed or moving direction of the remote control device 200.

[0123] Furthermore, in this specification, a pointer refers to an object displayed on the display unit 180 in response to an operation of the remote controller 200. Therefore, in addition to the arrow shape of the pointer 205 in the drawing, various object shapes are possible. For example, the above concept includes a dot, a cursor, a prompt, and a bold outline. The pointer 205 can be displayed on the display unit 180 at one point on a horizontal and a vertical axis, or at a plurality of points, such as a line or a plane.

[0124] Various embodiments of the display device 100 and a method for driving the same as described above will be described in more detail with reference to the accompanying drawings.

[0125] First, with reference to the Fig. 5 and Fig. 6 the operation of the display device 100 is examined, which is connected to an external device via an external device interface 135.

[0126] Fig. 5 is a block diagram illustrating a display device according to an embodiment of the present disclosure, and Fig. 6 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.

[0127] The display device 100 according to the embodiment may include an external device interface 135, a controller 170, and a display 180, as shown in Fig. 5 shown.

[0128] The display device 100 can be connected to an external device via an interface 135. The display device 100 can be connected to a plurality of external devices. For example, the display device 100 and the external device can be connected via an HDMI (High Definition Multimedia Interface) protocol.

[0129] Fig. 5 shows a case where a display device 100 is connected to a first external device 510 and a second external device 520 via an external device interface 135. However, the display device 100 may not be connected to an external device, may be connected to one external device, or may be connected to three or more external devices.

[0130] External devices can be independently selected from devices including set-top boxes (STBs), Blu-ray players, DVD players, game consoles, soundbars, and the like.

[0131] The external device interface 135 establishes a connection between the display device 100 and the external device. The external device interface 135 can receive content output from the external device to the display device 100 and send it to the controller 170. The content can include image and / or audio data.

[0132] For example, the first external device 510 connected to the external device interface 135 may be a set-top box, and the second external device 520 connected via the external device interface 135 may be a Blu-ray player.

[0133] The controller 170 may display the received content on the display 180. The controller 170 may display the content received via a first external device 510, such as a set-top box, on the display 180. Furthermore, the controller 170 may display the content received via a second external device 520, such as a Blu-ray player, on the display 180.

[0134] The controller 170 may receive a control request signal for the display device 100 from the first external device 510 or the second external device 520 via the external device interface 135. The control request signal may include a power-off request signal, a power-on request signal, a volume adjustment request signal, a channel change request signal, or the like.

[0135] For example, when using the display device 100, the user can select the “TV” mode or the “external input” mode in the “TV / external input” input signal setting mode.

[0136] When the input signal setting of the display device 100 is selected as an “external input” mode, the user can select an external device for receiving content from the external devices connected via the external device interface 135.

[0137] For example, in the external input mode, if a user selects a set-top box that is a first external device 510, the display device 100 may receive content from the set-top box that is the first external device 510 and display the content on the display 180.

[0138] In external input mode, when a user selects a Blu-ray player, which is a second external device 520, the display device 100 may receive content from the Blu-ray player, which is a second external device 520, and display the content on the display 180.

[0139] When the input signal setting of the display device 100 is set to the "TV" mode, the user can select a "TV channel" or a "content delivery application" provided by the display device 100. The content delivery application may include live TV, OTT (Over The Top), or the like.

[0140] A user can select the Netflix app as an example of OTT. When the user selects the Netflix app, the content provided by the Netflix app can be displayed on the 180-degree display.

[0141] As described above, the display device 100 can display contents provided from an external device according to the input signal setting mode, or can display contents via a content providing application provided by the display device 100 regardless of the connection with the external device.

[0142] As in Fig. 6, in a state where an external device, such as a set-top box, is connected to the display device 100, the user can display content on the display 180 provided via a content providing application of the display device 100, such as a Netflix app.

[0143] If a user in this environment uses content provided through an app provided by Netflix for an extended period of time, the add-on device, which is the first external device 510 connected via the external device interface 135, remains unused for that period.

[0144] The add-on device may have a function for automatically switching to a standby mode or automatically turning off when the user has not used it for a specified period of time. When the add-on device executes the automatic power-off function, it may send a power-off request signal to the display device 100.

[0145] A first external device 510, such as a set-top box, may send a power-off request signal to the display device 100 via the external device interface 135. The power-off request signal may be sent through the HDMI-CEC (Consumer Electronics Control) power synchronization function.

[0146] Fig. 7 is a diagram illustrating an input / output configuration of HDMI according to an embodiment of the present disclosure.

[0147] HDMI is an interface that transmits uncompressed digital video and digital audio signals, sent separately via DVI and S / PDIF, over a single cable. HDMI can include three TMDS (Transition Minimized Differential Signaling) data channels (0, 1, 2), one TMDS clock channel, one DDC channel, one CEC line, and power (+5 V).

[0148] At this time, digital image signals, that is, each image signal component of RGB, YCbCr, and voice signals, are synthesized in the form of a single packet on three TMDS data channels 0, 1, and 2. In addition, the power supply (+5 V) is configured so that an external device can read the EDID (Extended Display Identification Data) information of the display device via the DDC (Display Data Channel), even when the display device is turned off.

[0149] To enable signal synthesis and transmission in the HDMI method, the external device 710 includes an HDMI transmitter for synthesizing and transmitting digital image signals and digital voice signals in packet form, and the display device 720 includes an HDMI receiver for receiving the packets and separating the digital image signals and digital voice signals.

[0150] In conventional display devices, when a power-off request signal is received from a side-mounted device connected to an external device interface through the HDMI-CEC power sync function, the display device turns off in response to the received power-off request signal.

[0151] This is an action against the will of the user viewing the content and causes the display device to automatically turn off in response to the received power-off request signal, causing inconvenience to the user.

[0152] Accordingly, according to the display device 100 and the method for driving the same according to the embodiment of the present disclosure, when a power-off request signal is received from an external device via an external device interface 135, a method for adaptively performing processing on whether to power off the display device 100 according to the user's content display environment is presented.

[0153] When a power-off request signal is received from an external device, such as a set-top box, connected via an external device interface 135, the controller 170 of the display device 100 according to the embodiment determines whether the content displayed on the display 180 is provided by an external device, such as a set-top box.

[0154] The content displayed on the display 180 may be content that is addressed and displayed as a foreground on the display 180.

[0155] An external device interface 135 and an external device, such as a set-top box, are connected via an HDMI protocol. A power-off request signal can be sent via the HDMI-CEC (Consumer Electronics Control) function of an external device, such as a set-top box. The power-off request signal input from the set-top box can also be sent by pressing the power button of a remote control of the set-top box.

[0156] If the controller 170 determines that the content displayed on the display 180 is not content provided by an external device, such as a set-top box, it may ignore and not process a power-off request signal received from the set-top box.

[0157] The display device 100 can continue to display the content currently displayed on the display 180 without interruption, without requiring processing due to a power-off request signal received from an external device, such as a set-top box. Thus, the user can continue to view the content displayed on the display 180.

[0158] For example, if the content displayed on display 180 is displayed by a content delivery application deployed on display device 100, controller 170 may ignore the received power-off request signal and not process it. Controller 170 may continue to display the content provided by the application on display 180.

[0159] If the controller 170 determines that the content displayed on the display 180 is provided by an external device, such as a set-top box, the controller 170 may process the powering down of the display device 100 in response to a powering down request signal received from the external device, such as a set-top box.

[0160] As another method, when a power-off request signal is received from an external device such as a set-top box connected via an external device interface 135, the controller 170 of the display device 100 may check the input signal setting mode “TV / external input” of the display device 100 and adaptively determine whether to process the received power-off request signal according to the input signal setting mode of the display device 100.

[0161] The controller 170 may ignore and not process a power-off request signal received from an external device, such as a set-top box, when the “TV” mode is selected as the input signal setting mode of the display device 100.

[0162] The display device 100 can continue to display the content currently displayed on the display 180 without interruption, without requiring processing according to a power-off request signal received from an external device, such as a set-top box. Thus, the user can continue to view the content displayed on the display 180.

[0163] For example, if the content displayed on display 180 is displayed by a content delivery application deployed on display device 100, controller 170 may ignore the received power-off request signal and not process it. Controller 170 may continue to display the content provided by the application on display 180.

[0164] When the controller 170 determines that the input signal setting mode of the display device 100 is selected as the "external input" mode and that the content displayed on the display 180 is provided by an external device, such as a set-top box, the controller 170 may process a power-off of the display device 100 in response to a power-off request signal received from an external device, such as a set-top box.

[0165] As with reference to Fig. 5, an external device connected via an external device interface 135 may comprise a plurality of external devices, for example a first external device 510 and a second external device 520.

[0166] Regarding the display device and the method for driving the same according to an embodiment of the present disclosure, a case will be further examined in which a first external device (e.g., a set-top box) 510 and a second external device (e.g., a Blu-ray player) 520 are connected to an external device interface 135.

[0167] When the display 180 displays content provided by a first external device 510 connected via an external device interface 135 and receives a power-off request signal from a second external device 520 connected via the external device interface 135, the controller 170 may ignore and not process the received power-off request signal.

[0168] For example, when content provided via a set-top box is displayed on the display 180 and a power-off request signal is received from the Blu-ray player, the controller 170 may not perform processing according to the received power-off request signal and continue to display the content provided via the set-top box on the display 180.

[0169] Accordingly, it is possible to prevent the power supply of the device currently in use from being inadvertently turned off automatically due to a control signal input from another external device.

[0170] When content provided by a first external device 510 is displayed on the display 180, the controller 170 may process turning off the display device 100 in response to a power-off request signal when a power-off request signal is received from the first external device 510.

[0171] For example, when content provided via a set-top box is displayed on a display 180 and a power-off request signal is received from the set-top box, the controller 170 may process a power-off of the display device 100 in response to the received power-off request signal.

[0172] According to a display device and a method for driving the same according to an embodiment, there is an advantage in that turning off the display device can be performed adaptively according to a user's content display environment when a turning off request signal is received from an external device via an external device interface.

[0173] According to a display device and a method for driving the same according to an embodiment, there is an advantage in that the phenomenon that the display device is turned off against the user's intention to use the display device can be prevented when a power-off request signal is received from an external device via an external device interface.

[0174] Next, with reference to the Fig. 5 and Fig. 8 examines in more detail a display device and a method for controlling the same, which can prevent a user from recognizing that a malfunction of the display device 100 has occurred because a volume adjustment or channel change of the display device 100 is performed by a key input from an unauthorized external device.

[0175] Fig. 8 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.

[0176] The display device 100 processes a control request that it receives via an HDMI-CEC packet from an external device connected via an external device interface 135.

[0177] For example, if a volume adjustment or channel change request is received from an external device, such as a set-top box, connected via an external device interface 135, the controller 170 may perform a volume adjustment or channel change of the display device 100 in response to the received control request.

[0178] However, for display devices 100 and external devices that use HDMI, functional compatibility with the display device 100 may vary depending on the manufacturer or type of external device. If functional compatibility between devices that use HDMI is not ensured, the display device 100 may malfunction due to keystrokes from an external device connected to the external device interface 135, which may be inadvertently caused by the user.

[0179] Accordingly, according to the display device and the method of operating the same according to the embodiment, a function for filtering and processing key operations requested from an external device can be provided depending on the manufacturer and type of the external device.

[0180] The controller 170 may determine whether to process the received control signal according to the manufacturer of the external device 510, 520 or the type of the external device 510, 520, and filter and process the control signal received from the external device 510, 520 connected via an external device interface 135.

[0181] For example, the controller 170 may process a volume adjustment or channel change of the display device 100 in response to a volume adjustment or channel change control signal input from an authorized external device such as a set-top box.

[0182] However, if a control signal, for example for volume adjustment or channel change, is received from an unauthorized external device, the controller 170 may ignore the received control signal, for example for volume adjustment or channel change, and not process it.

[0183] According to the display device and the method for driving the same according to the embodiment, the controller 170 can provide a filtering function, which can perform a corresponding operation or ignore the control request for the display device 100 in response to a control request received from the external device, through an authorization process for the manufacturer of the external device or the type of the external device.

[0184] According to the display device and the method for driving the same according to the embodiment, it is possible to prevent volume adjustment or channel switching of the display device 100 from being performed by a key operation from an unauthorized external device.

[0185] According to the display device and the method for driving the same according to the embodiment, it is possible to prevent a malfunction of the display device 100 due to a key operation by an unauthorized external device.

[0186] Next, with reference to the Fig. 9 and Fig. 10, the operation of the display device 100 is examined when a user turns on an external device connected to the display device 100 via an external device interface 135 while the display device 100 is turned off.

[0187] Fig. 9 is a block diagram illustrating a display device according to an embodiment of the present disclosure, and Fig. 10 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.

[0188] A display device 100 according to one embodiment may include a controller 170, an external device interface 135, a memory 140, and a display 180.

[0189] A plurality of external devices, for example a first external device 510, for example a side-by-side device, and a second external device 520, for example a Blu-ray player, can be connected to the display device 100 via the external device interface 135.

[0190] According to one embodiment, as in Fig. 10, a user can turn on the power of an external device, such as a set-top box, in a state where the display device 100 is turned off.

[0191] When a user sends a power-on control signal to the set-top box using the remote control device of the set-top box while the power of the external device (e.g., the set-top box) is turned on, the external device (e.g., the set-top box) sends a power-on and input switching request message to the display device 100 via the HDMI-CEC function.

[0192] The controller 170 of the display device 100 first turns on the display device 100 and performs initialization to perform processing in response to a power-on and input switching request received from an external device (for example, a set-top box).

[0193] Subsequently, the controller 170 performs processing to respond to an input switching request from an external device (e.g., a set-top box) after the initialization of the display device 100 is completed. For example, the display device 100 may provide a connection state in which content, a control signal, etc., can be input from an external device (e.g., a set-top box), or may display a screen on the display 180 to which an external device (e.g., a set-top box) is connected.

[0194] However, if the initialization time of the display device 100 takes a long time, a situation may occur in which an input switching request message sent from an external device (for example, a set-top box) to the display device 100 is partially lost or not completely sent before the initialization of the display device 100 is completed.

[0195] In this way, in a situation where an input switching request message sent from an external device (e.g., a set-top box) to the display device 100 is partially lost or not completely sent, the display device 100 cannot provide a state in which it can respond to the input switching request sent from the external device (e.g., a set-top box).

[0196] For example, the controller 170 of the display device 100 may turn on the display device 100 in response to a received power-on request signal and perform initialization, and then display the screen of the display device 100 in its last state immediately before power-off on the display 180.

[0197] Accordingly, the operating status of the display device 100 and the external device (for example, a set-top box) desired by the user is not normally realized, causing inconvenience to the user.

[0198] According to the display and the method for driving the same according to the embodiment of the present disclosure, as a way to resolve inconvenience to the user, an input switching request message is processed using the memory 140 of the display device 100.

[0199] The controller 170 of the display device 100 may include a memory 140 that stores an input switching request signal received from an external device (e.g., a set-top box) connected via an external device interface 135.

[0200] When the display device 100 is turned off and the controller 170 receives a power-on request signal and an input switching request signal from an external device (e.g., a set-top box), the controller 170 turns on the display device 100 and processes an initialization in response to the power-on request signal. After the initialization of the display device 100 is completed, the controller 170 switches to an external device (e.g., a set-top box) according to the input switching request signal stored in the memory 140.

[0201] Accordingly, even if the initialization of the display device 100 takes a long time, a situation can be prevented in which an input switching request message sent from an external device (for example, a set-top box) to the display device 100 is partially lost or not completely sent before the initialization of the display device 100 is completed.

[0202] A display device 100 according to an embodiment may provide a connection state capable of receiving content or control signals from an external device (e.g., a set-top box) or displaying a screen on the display 180 to which an external device (e.g., a set-top box) is connected.

[0203] Next, with reference to the Fig. 11 and Fig. 12 the operation of the display device 100 is examined when an external device is connected to the display device 100 via both an external device interface 135 and a network interface 133.

[0204] Fig. 11 is a block diagram illustrating a display device according to an embodiment of the present disclosure, and Fig. 12 is a diagram illustrating a method of driving a display device according to an embodiment of the present disclosure.

[0205] A display device 100 according to an embodiment may include a controller 170, an external device interface 135 connected to an external device, a network interface 133 connected to a network, and a display 180 for displaying content, as shown in Fig. 11 shown.

[0206] The network interface 133 may provide an interface for connecting the display device 100 to a wired / wireless network, including the Internet. The network interface 133 may send or receive data to or from another user or electronic device via the accessed network or another network connected to the connected network.

[0207] The display device 100 can be connected to an external device via an external device interface 135. In addition, the display device 100 can be connected to an external device via a network interface 133.

[0208] An external device connected to the display device 100 can be connected to the display device 100 via at least one external device interface 135 and one network interface 133.

[0209] For example, a first external device 510 can be connected to the display device 100 via both an external device interface 135 and a network interface 133. A second external device 520 can be connected to the display device 100 via the network interface 133.

[0210] The controller 170 of the display device 100 may detect an external device (e.g., a first external device 510) connected via an external device interface 135. The controller 170 may detect an external device (e.g., a first external device 510 and a second external device 520) connected via a network interface 133.

[0211] The controller 170 may send a control signal or data to the first external device 510 via the external device interface 135. For example, the controller 170 may send a control signal or data to the first external device 510 via HDMI-CEC.

[0212] Furthermore, the controller 170 may send a control signal or data to the first external device 510 via the network interface 133. For example, the controller 170 may send a control signal or data to the first external device 510 via a wired / wireless network being accessed.

[0213] The control signal or data transmission speed via the wired / wireless network of the network interface 133 is faster than the control signal or data transmission speed via HDMI-CEC of the external device interface 135.

[0214] In the external device interface 135, control signals or data transmissions using HDMI-CEC are processed as one-way receive / transmit communication using a pin. Accordingly, when using HDMI-CEC, reception and transmission cannot be processed simultaneously. Furthermore, in the case of HDMI-CEC, all external devices connected to the external device interface 135 share a CEC line. Therefore, when an external device connected to the external device interface 135 is using the CEC line, other external devices connected to the external device interface 135 cannot use it until the CEC line becomes idle. For example, HDMI-CEC has a transmission speed per byte of 27.7 ms to 28.5 ms. HDMI-CEC can transmit approximately 35.7 bytes per second.

[0215] Control signals or data transmissions using network interface 133 can be sent simultaneously in both directions over the network in use. The transmission speed over network interface 133 may vary depending on the network environment, but if the network provides a transmission speed of 100 Mbps, approximately 12 megabytes per second can be sent.

[0216] The controller 170 of the display device 100 according to the embodiment can send a control signal or data to the first external device 510 via the network interface when the first external device 510 connected via the external device interface 135 is also connected via the network interface 133.

[0217] According to a display device and a method for driving the same according to an embodiment, when an external device connected to the display device is connected not only via an external device interface but also via a network interface, a control signal or data sent via HDMI-CEC of the external device interface can be quickly sent via the network interface.

[0218] According to a display device and a method for controlling the same according to an embodiment as in Fig. 12, the controller 170 of the display device 100 can detect an external device connected not only via the network interface 133 but also via the external device interface 135.

[0219] The display device 100 can receive a unique ID from a first external device connected via HDMI (UniqueID by HDMI) via an external device interface 135.

[0220] The display device 100 can request information from external devices connected to the network via the network interface 133 (network search).

[0221] As an example, the description is based on a case where a first external device is connected to the display device 100 via HDMI and a network, a second external device is connected to the display device 100 only via a network, and a third external device is connected to the display device 100 only via a network.

[0222] External devices connected to the network interface 133 can respond to a request from the display device 100 by sending their own unique ID to the display device 100 (UniqueID by Network).

[0223] Alternatively, external devices connected to the network may transmit their own unique ID as a broadcast or multicast when they are detected to be connected to the network, even without a request from the display device 100.

[0224] The display device 100 can detect external devices connected to the network interface 133 as well as to the external device interface 135 by comparing the unique ID information of each external device that it receives from the external devices connected to the external device interface 135 with the unique ID information of each external device that it receives from the external devices connected to the network interface 133 (Detect Device#1 Device HDMI Connected).

[0225] The display device 100 can confirm that the first external device 510 is connected to the display device 100 not only via the network but also via HDMI by comparing the unique ID (UniqueID by HDMI) of the first external device 510 connected via HDMI with the unique ID (UniqueID by Network) of the first external device 510 connected via the network (for example, the same ID).

[0226] The display device 100 can send network-based commands (e.g., control signals or data) at high speed via the network interface 133 to an external device that had to send limited commands (e.g., control signals or data) based on HDMI via the conventional external device interface 135 (transmission of command data using the network).

[0227] For example, the unique ID information sent from an external device connected to the display device 100 via HDMI may be in the form of a VendorCommand (CEC_HEADER + <vendorcommandwithid> + <vendorid> + <vendoropcode>+ [UUID]) sent from the external device to the display device 100. Furthermore, the unique ID information sent from an external device connected to the display device 100 via a network may be provided in the form of a network packet (using the "MAC" field of the HTTP header) sent from the external device to the display device 100.

[0228] According to one embodiment of the present disclosure, the method described above may be implemented as processor-readable code on a medium on which a program is stored. Examples of processor-readable media include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0229] The display device described above is not limited to the configuration and method of the above-described embodiments, and the embodiments can be configured by selectively combining all or part of the embodiments, so that various modifications can be made.< / vendoropcode> < / vendorid> < / vendorcommandwithid>

Claims

[1] Display device comprising: an external device interface; an ad that displays content; a controller that receives a power-off request signal from an external device connected via the external device interface, and ignores and does not process the power-off request signal received from the external device when it is determined that the content displayed on the display is not provided by the external device. [2] The display device according to claim 1, wherein the controller processes a power-off of the display device in response to the power-off request signal received from the external device when it is determined that the content displayed on the display is content provided by the external device. [3] The display device according to claim 1, wherein the external device interface and the external device are connected using an HDMI protocol, and the power-off request signal is sent from the HDMI-CEC, Consumer Electronics Control, power synchronization function of the external device. [4] Display device according to claim 1, wherein the external device connected via the external device interface comprises a first external device and a second external device, and wherein, when the content provided by the first external device is displayed on the display, the controller ignores the power-off request signal and does not process it when the power-off request signal is received from the second external device. [5] The display device according to claim 4, wherein, when the content provided by the first external device is displayed on the display, the controller processes turning off the display device in response to the power-off request signal when the power-off request signal is received from the first external device. [6] The display device according to claim 1, wherein the content displayed on the display is displayed as a foreground on the display. [7] The display device according to claim 1, wherein, when the content displayed on the display is displayed by a content providing application provided by the display device, the controller ignores and does not process the power-off request signal. [8] The display device according to claim 1, wherein the controller determines whether the received control signal should be processed by the external device connected via the external device interface, and filters and processes the received control signal according to the manufacturer of the external device or the type of the external device. [9] The display device of claim 1, further comprising: a memory that stores an input switching request signal received from the external device connected via the external device interface, wherein the controller, when the display device is turned off, processes initialization of the display device in response to the power-on request signal when a power-on request signal and the input switching request signal are received from the external device, and processes input switching to the external device according to the input switching request signal stored in the memory when initialization of the display device is completed. [10] The display device of claim 1, further comprising: a network interface that accesses a network, wherein the controller sends a control signal or data to be sent to the external device via the network interface when the external device connected via the external device interface is also connected via the network interface. [11] A method for controlling a display device, comprising: Receiving a power-off request signal from an external device connected via an external device interface; Determine whether the content displayed on the display is content provided by the external device; and Ignore and do not process the power-off request signal received from the external device if the controller determines that the content shown on the display is not content provided by the external device. [12] A method for driving a display device according to claim 11, wherein the controller processes a power-off of the display device in response to the power-off request signal received from the external device when it is determined that the content displayed on the display is content provided by the external device. [13] A method of driving a display device according to claim 11, wherein the external device interface and the external device are connected using an HDMI protocol, and the power-off request signal is sent from the HDMI-CEC, Consumer Electronics Control, power synchronization function of the external device. [14] A method for controlling a display device according to claim 11, wherein, when a content provided from a first external device connected via the external device interface is displayed on the display, the controller ignores the power-off request signal and does not process it when the power-off request signal is received from the second external device connected via the external device interface. [15] A method of driving a display device according to claim 14, wherein, when the content provided by the first external device is displayed on the display, the controller processes turning off the display device in response to the turn-off request signal when the turn-off request signal is received from the first external device. [16] A method of driving a display device according to claim 11, wherein the content displayed on the display is displayed as a foreground on the display. [17] A method of controlling a display device according to claim 11, wherein, when the content displayed on the display is displayed by a content providing application provided by the display device, the controller ignores and does not process the power-off request signal. [18] A method for driving a display device according to claim 11, wherein the controller determines whether the received control signal is to be processed by the external device connected via the external device interface, and filters and processes the received control signal according to the manufacturer of the external device or the type of the external device. [19] Method for controlling a display device according to claim 11, wherein, when the display device is turned off, the controller, when a power-on request signal and an input switching request signal are received from the external device, stores the input switching request signal in the memory while processing the initialization of the display device in response to the power-on request signal, and wherein, when the initialization of the display device is completed, the controller processes the input switching to the external device according to the input switching request signal stored in the memory. [20] A method for controlling a display device according to claim 11, wherein, when the external device connected via the external device interface is also connected via a network interface that accesses a network, the controller sends a control signal or data to be sent to the external device via the network interface.

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