Display device and computer program for controlling a display device

Abstract

Display device comprising: a display; a Bluetooth communication unit configured to communicate with a remote control; and a control unit electrically coupled to the display and the Bluetooth communication unit and configured to: to receive a user's voice input associated with a power-on command when the display device is in a standby mode in which the display device's display is turned off, based on the reception of the user's voice input, to control the display of the display device to turn it on and to execute a Bluetooth stack to communicate with the Bluetooth communication unit, and to control the Bluetooth communication unit to operate in a host controller interface (HCI) mode when the display device is in a normal mode in which the display device's display is turned on.

Description

TECHNICAL FIELDApparatuses and computer program products of the disclosure generally relate to a display device and a computer program product, the computer program product comprising instructions that, when executed by a processor, cause the display device to be controlled, and for example, to a display device having a dual-mode Bluetooth processor and an associated computer program product.PRIOR ARTAs an interface between a display device and a user, a panel key (or a function key) of the display device or a remote controller is often used. With the technology development, the functions of the display device have become more complex (e.g., executing various applications, playing games, or the like) and more versatile. Thus, the display device can execute contents such as externally downloaded video and also enable browsing the Internet.The remote controller may control the display device using optical signals. In recent years, remote controllers with Bluetooth communication are increasingly being used. Thus, the remote controller may control the display device via Bluetooth communication and optical signals. The remote controller may balance the directivity of the optical signals by the omnidirectional characteristic of the Bluetooth communication.DISCLOSURE OF UTILITY MODELTechnical ProblemWith the aid of one or more exemplary embodiments, the above-mentioned disadvantages and other disadvantages not described above can be eliminated.Technical SolutionAccording to an aspect of an exemplary embodiment, there is provided a display device, comprising: a display; Bluetooth communication circuits including a Bluetooth processor and selectively operating in one of host controller interface (HCl) mode and power saving mode; and a control unit configured to control the display and the Bluetooth communication circuits. In a normal mode in which the display is turned on, the controller may be configured to control the Bluetooth communication circuits to operate in the HCl mode, while in a standby mode in which the display is turned off, the controller may be configured to control the Bluetooth communication circuits to operate in the power saving mode.Further, the display device may include a power supply, wherein the controller may be configured to control the power supply to supply power to the Bluetooth communication circuits in the standby mode.According to an aspect of another exemplary embodiment, a computer program product includes instructions that, when executed by a processor, cause the display device to selectively operate in one of HCl mode and power save mode by causing the Bluetooth communication circuits of the display device to operate in HCl mode when the display device is in a normal mode in which the display is on and the Bluetooth communication circuits to operate in power save mode when the display is off in a standby mode, wherein in response to control information received from a remote control by the Bluetooth communication circuits, the display device is switched from standby mode to normal mode.According to an aspect of another exemplary embodiment, a computer program product includes instructions that, when executed by a processor, cause the display device to transition from an HCl mode of a Bluetooth communication circuit associated with a normal mode in which the display is turned on to a power saving mode associated with a standby mode in which the display is turned off in response to turning off a display device, and to receive control information from an external remote controller through the Bluetooth communication circuit, wherein in response to the received control information, the display device is switched from the standby mode to the normal mode, and wherein in response to the switching to the normal mode, content is displayed on the display.According to an aspect of another exemplary embodiment, a computer program product includes instructions that, when executed by a processor, cause the display device to be operated in an HCl mode by the Bluetooth communication circuits in a normal mode in which a display of the display device is turned on, and to transition from the HCl mode to a low power mode by the Bluetooth communication circuits in response to the switching to a standby mode in which the display is turned off.One or more example embodiments provide a display device comprising an HCI-type dual-mode Bluetooth processor operating in a standby mode in the display device, and an associated computer program product for controlling a display device.One or more example embodiments provide a display device including a dual-mode Bluetooth processor operating in a standby mode and an associated computer program product for controlling a display device.One or more example embodiments provide a display device including an HCl-type dual-mode Bluetooth processor operating in a low power mode in response to the display device being in a standby mode, and a computer program product for controlling a display device.One or more example embodiments provide a display device that can reduce power consumption by an HCl-type dual-mode Bluetooth processor operating in an HCl mode and a power saving mode, and a computer program product for controlling a display device.One or more example embodiments provide a display device including an HCl-type dual-mode Bluetooth processor and a computer program product for controlling a display device.Additional and / or other aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be apparent from the description.ILLUSTRATION OF UTILITY MODELThe above and / or other aspects of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which like reference numerals refer to like elements. Shown therein are: FIG. 1 is a schematic diagram illustrating an example operation between a display device and a remote controller according to an example embodiment; FIGS. 2A and 2B are a block diagram illustrating an example display device and remote control according to an example embodiment; FIG. 3 is a flowchart illustrating exemplary steps for display control of the display device according to an exemplary embodiment; FIG. 4 is a sequence diagram illustrating exemplary steps for display control of the display device according to an exemplary embodiment; FIGS. 5A, 5B, 5C, and 5D are schematic diagrams illustrating an example of display control steps of the display device according to an exemplary embodiment; FIG. 6 is a diagram illustrating an example Bluetooth packet format, according to an example embodiment.CONCRETE EMBODIMENTSExemplary embodiments of the present disclosure will be described below with reference to the accompanying drawings. Hereinafter, a computer program product for controlling an electronic device and the electronic device according to the exemplary embodiment will be described in more detail with reference to the accompanying drawings. In the explanation of the drawings, the same reference numerals or characters may be used to designate components or elements that perform substantially the same functions.The terms such as "first" and "second" used in various exemplary embodiments may be used to explain various elements, but do not limit the corresponding elements. These terms may be used to distinguish one element from another element. For example, a first element may be referred to as a second element, and likewise a second element may be referred to as a first element without departing from the scope of various exemplary embodiments of the present disclosure. The term "and / or" includes a combination of a plurality of relevant elements or one of the plurality of relevant elements.In example embodiments, the term "selecting a button (or a button)" on a remote control 200 (see FIG. 1 ) may refer to, for example, "pressing a button (or a button)" or "touching a button (or a button)". Moreover, the term "user input" may be used, for example, as a term that includes selecting a button (or a button) by a user, pressing a button (or a button) by a user, touching a button by a user, a user's touch gesture, a user's voice, the presence of a user (e.g., a user's appearance in the recognition area of a camera), or a user's movement.In various exemplary embodiments, a touch (including a touch gesture) on the remote controller 200 may be input by a user's body or a stylus (not shown) (e.g., a stylus pen).In example embodiments, a screen of the display device may be a display of the display device.In example embodiments, the term "display device screen power off" may have the same meaning as the display device power off. In response to the display device screen being turned off, the plug of the display device power cord may be connected to a power outlet.The terms used in various exemplary embodiments of the present disclosure are used to explain these exemplary embodiments, and are not intended to limit and / or limit the present disclosure. The singular forms used herein may also include their respective plural forms, unless the context clearly indicates otherwise. The terms "comprising", "having", etc. used in the description of exemplary embodiments of the present disclosure indicate the presence of features, numerals, steps, operations, elements, parts set forth in the description, or a combination thereof, and do not exclude the presence or addition of one or more other features, numerals, steps, operations, elements, parts, or a combination thereof.The same reference numerals in the drawings denote elements that substantially perform the same functions.FIG. 1 is a schematic diagram illustrating an example operation between a remote controller and a display device according to an example embodiment.In FIG. 1, the display device and the remote control are shown.The display device 100 receives a control command through short-range communication (e.g., Bluetooth, Bluetooth Low Energy, or the like) under the control of the remote controller 200. Further, the display device 100 may receive the control command from the remote controller 200 via infrared communication.A user may input various commands by selecting a button (including a button) on the remote controller 200 or using various interaction methods (for example, using a touchpad, voice recognition via a microphone, or motion recognition via a sensor). The display device 100 may be controlled in response to a received user command (e.g., turn on / off, boot, channel change, volume control, content playback, or the like). For example, when the screen of the display device 100 is turned off, the user may turn on the screen of the display device 100 using the remote controller 200.The user may input motion using a camera 145 (see FIG. 2 ), which may be mounted on the display device 100 separately from the remote controller 200, or may be implemented separately from the display device 100. The display device 100 may recognize the movement of a user captured by the camera and perform an operation (e.g., turning on / off, booting, channel switching, volume control, content reproduction, or the like) based on the recognition result.The display device 100 may detect the presence of the user using the camera 145. For example, the activated camera 145 may detect the presence of the user in the display device 100 with the screen turned off.Remote control 200 includes buttons 261 (or buttons) associated with the functions and / or operations of display device 100. Buttons 261 include physical buttons and touch buttons. Further, remote control 200 may include single function buttons (e.g., 261a-262b) and / or multi-function buttons (not shown) associated with the functions performed in display device 100.The single function button (e.g., 261 ato 262 b) including the POWER button 261 a, the remote controller 200 may be a button configured to control one of the plurality of functions performed in the display device 100.The multifunction button (e.g., a color button, not shown) of the remote controller 200 may be a button configured to control an additional function provided (or set) differently depending on a function performed in the display device 100. The multifunction buttons may be displayed in different colors (e.g., red, yellow, green, or the like) than the other buttons. The number of multifunction buttons may be increased, changed, or reduced depending on the functions of the display device 100.FIGS. 2A and 2B are a block diagram illustrating an example display device and remote control according to an example embodiment.As shown in FIGS. 2A and 2B, the display device 100 may receive control information transmitted from the remote controller 200. The display device 100 may be connected to an external electronic device (not illustrated) by wired or wireless connection via a communication unit (e.g., including communication circuits) 130 and / or an input / output unit (e.g., including input / output circuits) 160. The external electronic device may include, but is not limited to, a cellular phone (not shown), a smart phone (not shown), a tablet PC (not shown), a PC (not shown), and a server (not shown), or the like.The display device 100 may include a display 170 and additionally at least one of a tuner 120, a communication unit 130, and an input / output unit 160. In FIG. 2A, the display device is shown with all the elements described above. Moreover, the tuner 120 may be implemented as a separate device (e.g., a set-top box or the like (not shown)) from the display device 100 having the display 170. In this example, the display device 100 may be electrically connected to the separate device to receive signals.For example, the display device 100 may be implemented with an analog television, a digital television, a 3D television, a smart television, an LED television, an OLED television, a plasma television, a monitor, a curved television having a fixed curvature screen, a flexible television having a fixed curvature screen, a flexible television having a fixed curvature screen, and / or a variable curvature television capable of adjusting the curvature of a current screen depending on a user input, a monitor, a PC, a laptop PC, a tablet PC, a mobile phone, a slidek, a video wall system, an electronic display panel, or the like. However, it should be understood by those skilled in the art that the present disclosure is not limited thereto.The display device 100 includes the tuner 120, the communication unit 130, a microphone 140, the camera 145, a light receiver 150, the input / output unit 160, the display 170, an audio output device (e.g., including audio output circuits) 175, a memory 180, and a power supply 190. The display device 100 may include a sensor (e.g., an illuminance sensor, a temperature sensor, or the like (not illustrated)) for detecting an internal or external state of the display device 100.A control unit 110 includes a processor 111. Further, the control unit 110 may include a read only memory (ROM) 112 (a nonvolatile memory) storing a control program for controlling the display device 100, and a random access memory (RAM) 113 (or a volatile memory) storing signals or data input from the outside of the display device 100 or serving as a storage area for various tasks performed in the display device 100.The controller 110 may control an overall operation of the display device 100 and a signal flow between the internal elements 110- 190 of the display device 100 and process data. The control unit 110 controls the current supplied from the power supply 190 to the internal elements 110- 190.The processor 111 may include a graphics processing unit (GPU) (not shown) to process graphics associated with an image or video. Here, the processor 111 may be realized by a system-on-chip (SoC) including a core (not shown) and a GPU. Further, the processor 111 may be realized by a SoC including at least one of the ROM 112 and the RAM 113. The processor 111 may be a single-core, dual-core, tri-core, four-core processor or a processor including a multiple of the above cores.The processor 111 may include a plurality of processors. The plurality of processors may include a main processor (not shown) and a sub processor (not shown), the main processor being operated in a pre-power-on mode (a mode between a standby mode and a normal mode) for preparing the operation of the display device 100 representing one of the states of the display device 100, or in a normal mode for displaying a broadcast screen while the sub processor is operated in a standby mode (in this mode, for example, the power supply of the display device is turned off and a power plug is connected to a socket) representing one of the states of the display device 100. In the pre-power-on mode, the display device 100 may be activated and perform a pre-operation for displaying various contents.The control unit 110 including the main processor may be operated in the pre-power-on mode and / or the normal mode. Moreover, the control unit 110 including the subprocessor may be operated in the standby mode.Further, the plurality of processors may include a sensor processor (not shown) to control sensors (not shown). Here, the processor 111, the ROM 112, and the RAM 113 may be connected to each other via an internal bus.The control unit 110 may control the display 170 and a Bluetooth communication unit 133.The control unit 110 may control the display 170 and the Bluetooth communication unit 133 selectively operating in one of host controller interface (HCl) mode and power saving mode, wherein the control unit 110 may control the Bluetooth communication unit 133 to operate in the HCl mode in the normal mode in which the display 170 is turned on, while in the standby mode in which the display 170 is turned off, it is operated in the power saving mode.In addition, the display device 100 may include a power supply 190, and the control unit 110 may control the power supply 190 to supply power to the Bluetooth communication unit 133 in the standby mode.In the normal mode, with the display 170 turned on, the controller 110 may execute and control a Bluetooth stack to cooperate with the dual-mode Bluetooth processor of the Bluetooth communication unit 133 via the HCl of the Bluetooth communication unit 133.The control unit 110 may control the Bluetooth communication unit 133 to be operated in the power saving mode independently of the control unit 110.The control unit 110 may include the main processor and the sub-processor, and control the sub-processor to communicate with the Bluetooth communication unit 133 in the low power mode.The control unit 110 including the sub-processor may receive a wake-up signal associated with receiving the control information from the Bluetooth communication unit 133.The control unit 110 may control the display device 100 to be switched to the normal mode in response to the wake-up signal.In response to the switch to the normal mode, the controller 110 may cause a content to be displayed on the display 170.According to an exemplary embodiment, the term "control unit of the display device 100" may include, for example, the processor 111, the ROM 112, and the RAM 113 of the display device 100.Moreover, the above-described control unit is illustrated and described as including the processor 111, the ROM 112, and the RAM 113 of the display device 100, which should not be considered limiting. For example, the term "control unit of the display device 100" may be an arrangement in which the control unit includes the main processor, the sub-processor, the ROM 112, and the RAM 113 of the display device 100. Further, the term "control unit of the display device 100" may be an arrangement in which the control unit includes the sub-processor, the ROM 112, and the RAM 112 of the display device 100. Further, the term "control unit of the display device 100" may be an arrangement in which the control unit includes the main processor, the sub-processor, the sensor processor, the ROM 112, and the RAM 113 of the display device 100. Moreover, the control unit may be realized by an SoC or an integrated circuit logic (IC).It will be understood by those skilled in the art that the configuration and operation of the control unit 110 may be variously implemented depending on an exemplary embodiment.The tuner 120 may select broadcast signals that are received from the outside in a wired or wireless manner by adjusting to only a frequency of a channel that the display device 100 wants to receive from among various radio wave components by amplification, mixing, resonance, or the like. The broadcast signals include video, audio, and additional data (e.g., an electronic program guide (EPG)).Tuner 120 may receive video, audio, and additional data in a frequency band associated with a channel number (e.g., cable broadcast channel number 506), the channel number corresponding to a user input.The tuner 120 may receive broadcast signals from various sources, such as terrestrial broadcast, cable broadcast, satellite broadcast, or the like. Here, the tuner 120 may receive broadcast signals from sources such as analog broadcast, digital broadcast, or the like.The tuner 120 may be integrated into an all-in-one package with the display device 100 or may be realized by a separate device including a tuner unit (e.g., a set-top box (not shown) electrically connected to the display device 100 or a tuner (not shown) connected to the input / output unit 160).The communication unit 130 may include various communication circuits for connecting the display device 100 to the remote controller 200 or an external electronic device (not illustrated) under the control of the control unit 110. Further, the communication unit 130 may receive control information about the control of the display device 100 transmitted from the remote controller 200 under the control of the control unit 110.The communication unit 130 may include various communication circuits such as, but not limited to, at least one of wired Ethernet 131, wireless local area network (LAN) communication unit 132, and Bluetooth communication unit (e.g., including Bluetooth communication circuits) 133, depending on the performance and configuration of the display device 100. Further, the communication unit 130 may include a combination of communication circuits including the wired Ethernet 131, the wireless LAN communication unit 132, and the Bluetooth communication unit 133. Bluetooth communication is one of short-range communication methods implemented by various Bluetooth circuits, and may include Bluetooth Low Energy (BLE), Ultra Wide Band (UWB), Near Field Communication (NFC), or the like.The Bluetooth communication unit 133 may include Bluetooth circuits configured to perform Bluetooth communication mt of the remote controller 200. Here, the Bluetooth communication unit 133 may receive control information from the remote controller 200. The Bluetooth communication unit 133 may include various communication circuits such as, but not limited to, a Bluetooth processor (which may be a Bluetooth chip (not shown)). The Bluetooth communication unit 133 may include Bluetooth communication circuits having the Bluetooth processor and a first memory (e.g., a ROM (not shown) having an EEPROM) in which a Bluetooth profile is stored.The Bluetooth communication unit 133 may include Bluetooth communication circuits including the Bluetooth processor, the first memory, and an antenna (not shown). Further, the Bluetooth communication unit 133 may include Bluetooth communication circuits including the Bluetooth processor, the first memory (not shown), the antenna, and a filter (not shown) for filtering the noise of the signals received via the antenna.The Bluetooth processor may be a dual-mode Bluetooth processor that supports both Bluetooth classic, a parent version of Bluetooth 4.0, and Bluetooth low energy, a follower version of Bluetooth 4.0. Here, the dual-mode Bluetooth processor may refer to a process selectively operating in either mode, for example. For example, the dual-mode Bluetooth processor may operate in a host controller interface (HCl) mode or in a low power mode.In response to the display device 100 being in the normal mode, the Bluetooth processor may be an HCl-type dual-mode Bluetooth processor that may communicate with the controller 110 of the display device 100. For example, the HCl-type dual-mode Bluetooth processor may communicate with a Bluetooth stack (not shown), which is software for controlling the HCl-type dual-mode Bluetooth processor of the display device 100 via the HCl.The HCl-type dual-mode Bluetooth processor may communicate with the Bluetooth stack, which is software for controlling the HCl-type dual-mode Bluetooth processor in the display device 100 under the control of the control unit 110 via the HCl. In this case, the dual-mode Bluetooth processor of the HCl type can be operated via the communication with the Bluetooth stack. The Bluetooth stack may be executed by the controller 110. In the normal mode, with the display 170 turned on, the controller 110 may execute a Bluetooth stack to cooperate with the dual-mode Bluetooth processor via the HCl of the Bluetooth communication unit 133.When the display device 100 is in the standby mode, the HCl type dual mode Bluetooth processor cannot communicate with the control unit 110 of the display device 100. Here, the HCl-type dual-mode Bluetooth processor cannot communicate with the Bluetooth stack, which is software for controlling the HCl-type dual-mode Bluetooth processor in the display device 100 under the control of the control unit 110 via the HCl. In response to the HCI-type dual-mode Bluetooth processor not communicating with the Bluetooth stack, the HCI-type dual-mode Bluetooth processor may be disabled.According to an exemplary embodiment, the Bluetooth communication unit 133 may include Bluetooth circuits including a switching module (not shown). Moreover, the dual-mode HCI-type Bluetooth processor may include a switching module. Herein, the switching module may include circuits configured to be switched between an HCl mode associated with the display device 100 in the normal mode and a power saving mode associated with the display device 100 in the standby mode.The HCl mode is a mode in which the HCl type dual-mode Bluetooth processor of the Bluetooth communication unit 133 is operated with the Bluetooth stack of the display device 100 in the normal mode. The power saving mode, on the other hand, is a mode in which the HCl-type dual-mode Bluetooth processor of the Bluetooth communication unit 133 is independently operated in the standby mode. The dual-mode Bluetooth HCI-type processor may be operated in the power saving mode independently of the Bluetooth stack of the display device 100.The dual-mode Bluetooth HCI-type processor may operate in the HCI mode associated with the display device 100 in the normal mode and in the power saving mode associated with the display device 100 in the standby mode.The switching module of the Bluetooth communication unit 133 may be switched between the HCl mode associated with the display device 100 in the normal mode and the power saving mode associated with the display device 100 in the standby mode under the control of the control unit 110. Alternatively, the switching module of the Bluetooth communication unit 133 may be switched between the HCl mode associated with the display device 100 in the normal mode and the power saving mode associated with the display device 100 in the standby mode under the control of the HCl type dual mode Bluetooth processor.According to another exemplary embodiment, the HCI-type dual-mode Bluetooth processor may be operated in the HCI mode associated with the display device 100 in the normal mode and the power saving mode associated with the display device 100 changing from the normal mode to the standby mode without the switching module of the Bluetooth communication unit 133.In the low power mode, the HCI-type dual mode Bluetooth processor may perform Bluetooth communication with an external device using a light profile (e.g., a light profile for Bluetooth classic or a light profile for Bluetooth low energy (not shown)) that is independent of a profile used in the normal mode (e.g., a profile for Bluetooth classic and / or a profile for Bluetooth low energy).In the dual mode Bluetooth processor, the profile used in the normal mode may be different from the profile used in the standby mode. Here, the separate light profile (not shown) may be stored in the first memory (not shown) of the Bluetooth communication unit 133.The switching module may be implemented using software or hardware. It is further provided that the switching module can be implemented by a combination of software and hardware.The HCl-type dual-mode Bluetooth processor may communicate with the control unit 110 of the display device 100 in the standby mode. According to an exemplary embodiment, it is further provided that the Bluetooth processor is an HCl-type dual-mode Bluetooth processor that can communicate with the control unit 110 of the display device 100 in the pre-power-on mode.According to an exemplary embodiment, it is contemplated that the Bluetooth communication unit 133 may receive control information transmitted from the remote controller 200 under the control of the control unit 110.The Bluetooth communication unit 133 may receive a packet following the Bluetooth low energy standard and including control information (e.g., an on / off command, channel change, volume control, or the like) transmitted from the remote controller 200. Hereinafter, the packet following the Bluetooth low energy standard will be referred to as "BLE packet" for convenience of explanation. Further, the Bluetooth communication unit 133 may receive a packet including the control information transmitted from the remote controller 200 and following the Bluetooth classic standard. Hereinafter, the packet following the Bluetooth classic standard will be referred to as a "classic packet" for convenience of explanation. A packet including the BLE packet and the classic packet may be referred to as a Bluetooth packet.The power consumption of the Bluetooth communication unit 133 is different depending on the normal mode or the standby mode, each of which modes represents one of the states of the display device 100. For example, the Bluetooth communication unit 133 may consume 100 mW in the HCl mode associated with the display device 100 in the normal mode. On the other hand, in the power saving mode, the Bluetooth communication unit 133 associated with the display device 100 in the standby mode may consume 12.5 mW.The microphone 140 receives a voice of the user. In this case, the microphone 140 can convert the received voice into an electrical signal and output it to the control unit 110. For example, the user voice may include a voice associated with controlling a function or menu of the display device 100. The detection range of the microphone 140 may depend on the volume of the user's voice and the environment (e.g., a speaker sound, an environmental sound, or the like).The microphone 140 may be integrated into an all-in-one package with the display device 100 or may be realized by a separate device independent of the display device 100. The separate microphone 140 may be electrically connected to the display device 100 via the communication unit 130 or the input / output unit 160.The camera 145 may generate a video (e.g., solid frames) in a detection area of the camera. The video can be used to recognize a user movement. The user movement may include, for example, the presence of the user (e.g., the appearance of the user in the detection area of the camera) or a body part of the user, such as the face, the miene, the hand, the thumb or the finger of the user, or a movement of a body part of the user.The camera 145 may include a lens (not shown) and an image sensor (not shown). Here, the camera 145 may support optical or digital zoom using a plurality of lenses and image processing.For example, the camera 145 may be disposed at the top, bottom, left or right side of the display device 100. It is further contemplated that camera 145 may be located at either the center of the top end, right of the bottom end, center of the bottom end, or left of the bottom end of display device 100.According to an exemplary embodiment, it is contemplated that the camera 145 may photograph the user (or user movement) in the display device 100 that is turned off depending on the power supply of the power supply 190 (however, a power plug is connected to a power outlet). It is also contemplated that the camera 145 photograph the user (or user movement) in the display device 100 whose screen is turned off (or in standby mode with the plug of the power cord connected to the socket) in response to the power supply of the power supply 190.The camera 145 may convert the photographed motion into an electric signal under the control of the control unit 110 and transmit it to the control unit 110. Then, the control unit 110 may analyze the photographed motion image and recognize the user's motion. In this case, the control unit 110 can display a menu on the display device 100 or can perform a control (e.g. channel change or volume control) in accordance with the result of the movement detection.When multiple cameras 145 are present, the display device 100 may receive a 3D still image or motion using a first camera (not shown) disposed on the front side of the display device 100 and a second adjacent camera (not shown), wherein a distance between the first camera (not shown) and the second camera (not shown) is, for example, greater than 5 mm and less than 80 mm.The camera 145 may be integrated into an all-in-one package with the display device 100 or may be implemented by a separate device independent of the display device 100. An electronic device (not illustrated) including a separate camera may be electrically connected to the display device 100 via the communication unit 130 or the input / output unit 160.The light receiver 150 may include light receiving circuits configured to receive a light signal (including control information) output from the remote controller 200 through a light window (not shown).The light receiver 150 may receive a light signal from the remote control 200 associated with a user input (e.g., a touch, a press, a touch gesture, a voice, or a motion). The control information may be extracted from the received light signal. The received light signal and / or the extracted light information may be transmitted to the control unit 110.Both the light receiver 150 and the Bluetooth communication unit 133 can be seen in FIG. 2A. However, when the remote controller 200 transmits the control information to the display device 100 via the above-described Bluetooth communication, the light receiver 150 may be omitted.The input / output unit 160 may include various input / output circuits that receive content from outside the display device 100. For example, the content may include a video, an image, a text, or a web document.The input / output unit 160 may include various input / output circuits, such as, but not limited to, one or more high definition multimedia interface (HDMI) ports 161, a component input socket 162, a PC input port 163, and a USB input socket 164 provided for receiving the content. Here, the input / output unit 160 may include a combination of the HDMI input port 162, the component input port 162, the PC input port 163, and the USB input port 164. It will be understood by those skilled in the art that the input / output unit 160 may be added, deleted, and / or changed depending on the performance and configuration of the display device 100.The display 170 displays a video included in a broadcast signal received via the tuner 120 under the control of the control unit 110. Here, the display 170 may display content (e.g., a video) input via the communication unit 130 or the input / output unit 160. The display 170 may output content stored in the memory 180 under the control of the control unit 110. It is further provided that the display 170 can display a voice-controlled or a motion-based user interface (UI) in order to perform a task associated with the voice recognition or the motion recognition. For example, the voice-controlled UI may include a voice command summary, while the motion-based UI may include a motion command summary.According to an exemplary embodiment, it is provided that the screen of the display device 100 can comprise the display 170 of the display device 100.In response to displaying content on the display 170, the display 170 may display visual feedback under control of the controller 110.According to a further exemplary embodiment, it is provided that the display 170 can be configured independently of the display device 100. The display 170 may be electrically connected to the display device 100 via the input / output unit 160 of the display device 100.The audio output device 175 may include various audio output circuits that output an audio included in a broadcast signal received via the tuner 120 under the control of the control unit 110. Here, the audio output device 175 may display an audio (e.g., an audio associated with a voice or a sound) input via the communication unit 130 or the input / output unit 160. Further, the audio output device 175 may output an audio file stored in the memory 180 under the control of the control unit 110.The audio output device 175 may include various audio output circuits, such as, but not limited to, at least one of a speaker 176, a headphone output terminal 177, and an S / PDIF output terminal 178. It is further contemplated that audio output device 175 may include a combination of speaker 176, earphone output port 177, and S / PDIF output port 178.According to an exemplary embodiment, it is contemplated that audio output device 175 may output audible feedback in response to the display of content on display 170 under the control of controller 110 of display device 100.The memory 180 may store various data, programs, or applications for driving and controlling the display device 100 under the control of the control unit 110. Here, the memory 180 may store signals or data input / output in response to driving of the tuner 120, the communication unit 130, the microphone 140, the camera 145, the light receiver 150, the input / output unit 160, the display 170, the audio output device 175, and the power supply 190.The memory 180 may store a control program for controlling the display device 100 and the control unit 110, an application originally provided by a manufacturer or downloaded from the outside, a GUI associated with an application, an object for providing a GUI (e.g., an image, a text, an icon, a button, or the like), user information, documents, databases, or related data.The memory 180 may include various program modules, such as, but not limited to, a broadcast receiving module, a channel control module, a volume control module, a communication control module, a speech recognition module, a motion recognition module, a light receiving module, a display control module, an audio control module, an external input control module, a power control module, a speech database (DB), or a motion database (DB), which are not shown. The modules and database of the memory, which are not illustrated, may be implemented in the form of software to perform a broadcast reception control function in the display device 100, a channel control function, a volume control function, a Bluetooth / Bluetooth low-energy communication control function, a voice recognition function, a motion recognition function, a light reception control function, a display control function, an audio control function, an external input control function, or a power control function (e.g., a standby mode, a pre-power mode, and / or a normal mode). The control unit 110 may perform the function of the display device 100 using the software stored in the memory 180.The memory 180 may store information about the display device or the remote controller.The memory 180 may store control information received from the remote controller 200.The memory 180 may store a wake-up signal received from the remote controller 200.The memory 180 may store a video, image, or text associated with visual feedback.The memory 180 may store a sound associated with acoustic feedback.The memory 180 may store a feedback duration time (e.g., 300 ms) during which the feedback is provided to the user.The term "memory" used in the embodiments may refer to, for example, an arrangement in which the memory includes the memory 180, the ROM 112 of the control unit 110, the RAM 113, a memory (not illustrated) implemented using a SoC (not illustrated), a memory card (not illustrated, e.g., a micro SD card or a USB memory) built in the display device 100, and an external memory (not illustrated) connectable to the USB port 164 of the input / output unit 160 (e.g., a USB memory). It is further contemplated that the memory may include a non-volatile memory, a volatile memory, a hard disk drive (HDD), or a solid state drive (SSD).The power supply 190 may supply power from an external power source to the internal elements 110- 190 of the display device 100 under the control of the control unit 110. Here, the power supply 190 may supply power to the internal elements 110- 190 under the control of the control unit 110, which power is from one or more batteries (not shown) located in the display device 100.The power supply 190 may include a first power supply (not shown) for supplying power to the communication unit 130 of the display device 100 when the latter is turned off (or when the latter is in the standby mode of the display device 100 or the power plug of which is connected to a socket).The power supply 190 may include a first power supply (not shown) for supplying power to the short-range communication unit 133 of the display device 100 when it is turned off (or when it is in the standby mode of the display device 100 or the power plug thereof is connected to a power outlet) and the sub-processor (not shown) for controlling the short-range communication unit 130. The power supply 190 may include a first power supply (not shown) to power the camera 145 of the display device 100 when it is off (however, a power plug is connected to a power outlet) and the sensor processor to control the camera 145.The power supply 190 may include a battery (not shown) to power the short-range communication unit 133 of the display device 100 when it is turned off (however, a power plug is connected to a socket).Of the elements 110- 190 of the display device 100 illustrated in FIGS. 1 and 2A, at least one element (e.g., at least one of the elements illustrated by dashed boxes) may be added, changed, or deleted depending on the performance and / or type of the display device 100. It will be understood by those skilled in the art that the arrangements of elements 110- 190 may be changed depending on the performance or configuration of display device 100.As shown in FIG. 2B, the remote controller 200 remotely controlling the display device 100 may include a control unit 210, a communication unit (e.g., including communication circuits) 230, an input device (e.g., including input circuits) 260, a light output device (e.g., including light output circuits) 250, a display 270, a memory 280, and a power supply 290. Here, the remote controller 200 may include the communication unit 230 or both the communication unit 230 and the light output device 250.Remote control 200 may be, for example, a device with which display device 100 may be controlled. Further, it is contemplated that the remote controller 220 includes a device in which an application (not shown) for controlling the display device 100 may be installed (or may be downloaded from the outside). An electronic device in which an application (not illustrated) for controlling the display device 100 may be installed may include a display, which may be, for example, a display having only a display panel without a touch screen or a touch panel.The electronic device with the display may include, but is not limited to, a cellular phone (not shown), a smart phone (not shown), a tablet PC (not shown), a notebook PC (not shown), other display devices or a home appliance (e.g., a refrigerator, a washing machine, or a vacuum cleaner), or the like. The user may control the display device 100 via a function button (not shown, e.g., a channel button) on a GUI (not shown) provided by the executed application.The control unit 210 may include a processor 211. Further, the control unit 210 may include a ROM 212 (or a nonvolatile memory) storing a control program for controlling the remote controller 200, and a RAM 213 (or a volatile memory) storing signals or data input from the outside of the remote controller 200 or serving as a storage area for various tasks performed in the remote controller 200.The control unit 210 may control an overall operation of the remote controller 200 and a signal flow between the internal elements 220 to 290, and process data. At this time, the control unit 210 may control the current supplied from the power supply 290 to the internal elements 220 to 290.The control unit 210 may control a POWER button 261 a(illustrated in FIG. 1 ) to turn on the display device and the communication unit 230 and perform control to transmit control information associated with user input to the display device 100, the display 170 of which is turned off via the communication unit 230 according to selection of the POWER button 261 a.The control unit 210 may be configured to transmit control information to the display device 100 via the communication unit 230, the control information including one of a BLE packet following the Bluetooth Low Energy standard and a Bluetooth classic packet following the Bluetooth classic standard.According to an exemplary embodiment, the control unit of the remote controller 200 may include, for example, the processor 211, the ROM 212, and the ROM 213 of the remote controller 200.The communication unit 230 may be wirelessly connected to the display device 100 under the control of the control unit 210. Here, the communication unit 230 may include various communication circuits to transmit control information (e.g., control information associated with turning on or moving the remote controller) associated with user input (e.g., a touch, a press, a touch gesture, a voice, or a motion) to the display device 100 under the control of the control unit 210.The communication unit 230 may include various communication circuits, such as, but not limited to, at least one of a wireless LAN communication unit 231 and a Bluetooth communication unit 232, or may include both the wireless LAN communication unit 231 and the Bluetooth communication unit 232.The wireless LAN communication unit 231 may be wirelessly connected to an access point (AP) at a location where the AP is installed under the control of the control unit 210. For example, the wireless LAN communication unit 231 may include WiFi. The wireless LAN communication unit 231 may support the wireless LAN standards (IEEE802.11x) of IEEE.The Bluetooth communication unit 232 may include Bluetooth communication circuits configured to perform short-range wireless communication between the remote controller 200 and the display device 100 without an AP under the control of the control unit 210.The Bluetooth communication unit 232 may include Bluetooth communication circuitry to transmit control information (e.g., first control information) transmitted to the display device 100 using a Bluetooth packet (e.g., one of the Bluetooth classic packet and the Bluetooth low energy packet).FIG. 2B illustrates the Bluetooth communication unit 232. However, short-range communication may also include infrared data association (IrDA), ultra wide band communication (UWB), NFC, or the like.The light output device 250 may include light output circuitry configured to output, under control of the controller 210, a light signal (e.g., including control information) associated with a user input (e.g., a touch, a press, a touch gesture, a voice, or a motion). The output light signal may be received by the light receiver 150 of the display device 100.The remote control code format used in the remote control 200 may be a proprietary remote control code format or a commonly used remote control code format. The remote control code format may include a master code and a data word. The output light signal may be modulated with a carrier wave and output. The control information may be stored in the memory 280 or generated by the control unit 210. The remote control 200 may include an IR emitting diode (IR LED).The remote controller 200 may include one or both of the communication unit 230 and the light output device 250 by which the control information may be transmitted.The control unit 210 may transmit control information associated with a user input and / or a movement of the remote controller 200 to the display device 100 via one of the communication unit 230 and the light output device 250 (e.g., the communication unit 230).The input device 260 may include various input circuits, such as, but not limited to, a button 261 or a touchpad 262 for receiving user input (e.g., a touch or a press) for controlling the display device 100. Here, the input device 260 may include a microphone 263 for receiving a user's voice that is one of the user inputs, a sensor 264 for detecting a motion of the remote control 200 caused by another user input, or a vibration motor (not shown) for providing haptic feedback.The input device 260 may output an electrical signal (e.g., an analog or digital signal) associated with a received user input (e.g., a touch, press, touch gesture, voice, or motion) to the controller 210.The key 261 may include the keys 261 ato 261 eof FIG. 1. The touchpad 262 may receive a touch or touch gesture of the user.The touchpad 262 may be embodied as a direction key 262 aand an input key 262 b. Further, it is contemplated that the touch pad 262 may be formed on the front side of the remote controller 200 where the buttons 261 ato 261 eare not disposed.The microphone 263 receives a voice of the user. At this time, the microphone 263 may convert the received voice into an electric signal and output it to the control unit 210.The sensor 264 may include various sensor circuits by which an internal and / or external state of the remote control 200 may be detected. For example, the sensor 264 may include a motion sensor (not shown) for detecting a motion of the remote controller 200, a gyro sensor (not shown) for detecting a direction using the rotational inertia of the remote controller 200, an acceleration sensor (not shown) for detecting the acceleration of 3 axes (e.g., X axis, Y axis, Z axis) acting on the remote controller 200, or a gravity sensor for detecting the working direction of gravity. In this case, the sensor 264 can measure the acceleration or the gravitational acceleration of the remote control 200.The sensor 264 may include a force sensor (not shown) or a pressure sensor (not shown) to detect user contacting or gripping of the surface of the remote control 200. It is further contemplated that the sensor 264 may include a handle sensor (not shown) for sensing the handle of the remote control 200 by the user.According to an exemplary embodiment, it is contemplated that the sensor 264 may sense movement (or acceleration) of the remote control 200. It is further provided that the sensor 264 can detect contacting of the remote control 200 by the user or a grip of the remote control 200 by the user.The control unit 210 may generate a control signal associated with a movement of the remote controller 200, and transmit this control signal to the display device 100 via the communication unit 230. Furthermore, it is provided that the control unit 210 generates a control signal which is assigned to contacting or a handle by the user, and can transmit this control signal to the display device 100 via the communication unit 230.The vibration motor (not shown) may convert an electrical signal to a mechanical vibration under the control of the controller 210. For example, the vibration motor (not shown) may include a linear vibration motor, a rod-shaped vibration motor, a coin-shaped vibration motor, or a piezoelectric element vibration motor. Inside the remote controller 200, a single vibration motor (not shown) or plural vibration motors (not shown) may be disposed. It is further contemplated that the vibration motor (not shown) may vibrate all or part of the remote control 200.According to an exemplary embodiment, it is contemplated that the vibration motor (not shown) may output haptic feedback corresponding to the transmission of the control information under the control of the control unit 210. Based on the control information transmitted from the controller 210, the vibration motor (not shown) may provide a plurality of haptic feedback stored in the memory 280, with the intensity and dwell time of the vibrations varying, for example, depending on the various haptic patterns.The display 270 may include, for example, but is not limited to, a liquid crystal display (LCD display), an OLED display, a PDP display, a vacuum fluorescent display (VFD display), or the like.The display 270 may display a broadcast channel number, a broadcast channel name, and / or a state of the display device (e.g., a screen power-off, a pre-power-on mode, and / or a normal mode) displayed on the display device 100.For example, in response to the remote controller 200 and the display device 100 being connected to each other via short-range communication, the display 270 may display a text "BT connected" under the control of the control unit 210.In response to an optical signal output from the remote controller 200 to the display device 100, the display 270 may display, under the control of the control unit 210, a text, an icon, or an icon indicating "TV ON" for turning on the display device 100, "TV OFF" for turning off the display device 100, "Ch No." for indicating a tuned channel number, or "Vol. Value" for displaying a set volume is assigned.The memory 280 may store various data, programs, or applications for driving and controlling the remote controller 200 under the control of the control unit 210. Here, the memory 280 may store signals or data input or output according to the driving of the communication unit 230, the light output device 250, and the power supply 290.The memory 280 may store control information associated with a received user input (e.g., a touch, a press, a touch gesture, a voice, or a motion) and / or a motion of the remote control 200 under control of the controller 210.The memory 280 may store remote control information about the remote operation 200. Here, the remote control information may include a model name, a unique device ID, remaining memory capacity, presence / absence of object data, a Bluetooth version, or a Bluetooth profile.The memory 280 may store control information corresponding to a selection of the POWER button 261 a(e.g., a first user input) transmitted to the display device 100.The memory 280 may store one or two or more haptic patterns. Here, the haptic pattern may be expressed by a waveform. The haptic pattern may be expressed by, for example, the vibration time (e.g., in the unit 50 ms) of the vibration motor (not shown) on the horizontal axis and the vibration intensity (e.g., in the unit 500 mV) of the vibration motor (not shown) on the vertical axis. For example, a first haptic pattern may be a vibration that gradually increases from 0 V to 800 mV, then gradually decreases to 100 mV, and then increases again. Furthermore, it is provided that an increasing section and a decreasing section can be symmetrical to one another.When a plurality of haptic patterns are stored in the memory 280, one of them may be set as a preferable haptic pattern by settings. After the preferred haptic pattern is established, the control unit 210 may preferably provide it via the vibration motor (not shown).It will be understood by those skilled in the art that the haptic pattern is added, changed, or deleted depending on the function or configuration of the remote controller 200.The power supply 290 may power the elements 210- 290 of the remote control 200 under the control of the control unit 210. In this case, power supply 290 may supply power to elements 210- 290 from one or two or more batteries (not shown) located in remote control 200. The battery may be disposed inside the remote controller 200 between the front side (e.g., a surface on which the button 261 or the touch pad 262 is formed) and the back side (not shown) of the remote controller 200.Of the elements of the remote controller 200 shown in FIGS. 1 and 2B, at least one element (e.g., at least one of the elements shown by dashed boxes) may be added or deleted depending on the performance of the remote controller 200. It will be understood by those skilled in the art that the arrangements of the elements are changed depending on the performance or configuration of the remote controller 200.Hereinafter, the steps of controlling the screen of the display device will be described in more detail by way of example with reference to the drawings.FIG. 3 is a flowchart illustrating exemplary steps for display control of the display device according to an exemplary embodiment.FIG. 4 is a sequence diagram illustrating exemplary steps for display control of the display device according to an exemplary embodiment.FIGS. 5A to 5D are schematic diagrams illustrating exemplary steps for display control of the display device according to an exemplary embodiment.In step S 310 of FIG. 3, the display device shifts to the standby mode.FIG. 5A illustrates a state in which the display device displays content in the normal mode, while FIG. 5B illustrates a state in which the display device shifts to the standby mode and the screen is turned off.As shown in FIGS. 4, 5A, and 5B, the screen of the display device is turned off based on a control command of the remote controller 200 (401 or 404).The display device 100 and the remote controller 200 may be connected to each other through Bluetooth communication. It will be appreciated by those skilled in the art that the display device 100 and the remote control 200 may be interconnected by Bluetooth communication (e.g., one of Bluetooth Classic and Bluetooth Low Energy).The screen of the display device 100 may be turned off by the user. Control information (not shown) associated with selection of the POWER button 261 aon the remote control 200 may be received by the display device 100.A control signal (not shown) associated with selection of a control panel key (not shown) of the display device 100 may be received by the controller 110 of the display device 100. Here, the operation panel button (not illustrated) may be disposed on the front side, the side surface, or the back side (e.g., a surface of a bottom) of the display device 100. The panel keys (not shown) include physical keys and touch keys.The display device 100 can be connected to an external socket via a plug of a power cable.In response to control information associated with turning off the display device's screen (or turning off the display device 100) being received from the display device 100, the controller 110 may turn off the display 170 ( 402). For example, the control unit 110 may transmit a signal for turning off the content output to the display 170, turn off a power supply to the display 170, or transmit a turn-off signal to the power supply 190.The display 170 is turned off under the control of the control unit 110 (403).In response to the control information associated with turning off the screen of the display device 100 being received from the display device 100, the control unit 110 may transmit a signal representing content 500 to the display 170 to turn off the screen. In response to the screen-off signal, the display 170 may stop displaying the content.In response to the control information associated with turning off the screen of the display device 100 being received from the display device 100, the control unit 110 may control the power supply 190 that supplies power to the display 170 to turn off the power supply to the display 170.In response to the control information associated with turning off the screen of the display device 100 being received from the display device 100, power may be provided to the sub-processor (not shown). Moreover, in response to the control information associated with turning off the screen of the display device 100 being received from the display device 100, power supply to the main processor (not shown) may be turned off.In response to the control information associated with turning off the screen of the display device 100 being received from the display device 100, the display device 100 may switch from the normal mode to the standby mode ( 404).In response to the control information associated with turning off the screen of the display device 100 being received from the display device 100, power supply to most internal elements of the display device 100 may be turned off. In addition, some of the elements may be continuously energized after the screen of the display device 100 is turned off.After the screen of the display device 100 is turned off, the communication unit 130 may be continuously powered. In addition, the control unit 110 (or the sub-processor) may perform control to continuously power the Bluetooth communication unit 133 after the screen of the display device 100 is turned off.After the screen of the display device 100 is turned off, the first power supply may be controlled by the control unit 110 (or the sub-processor) to continuously supply power to the Bluetooth communication unit 133. The Bluetooth communication unit 133 supplied with power may be also in an activation state in the display screen of the display device 100 in the power-off state, so that the Bluetooth communication unit 133 can receive Bluetooth packets from the outside.In FIG. 4, steps (402 to 404) are shown in sequence. However, it will be understood by one of ordinary skill in the art that the order of some steps may be changed (e.g., the display may be turned off after the display device has switched from the normal mode to the standby mode).In step S 320 of FIG. 3, the Bluetooth communication unit receives a low power signal of the display device.As shown in FIGS. 4 and 5B, the control unit 110 (or the sub-processor) may transmit a low power signal associated with the switching to the standby mode to the Bluetooth communication unit 133 in response to the switching of the display device 100 from the normal mode to the standby mode ( 405).The Bluetooth communication unit 133 may receive the low power signal from the control unit 110 via the HCl. Here, the Bluetooth communication unit 133 may store low-power information associated with the low-power signal in the first memory (not illustrated). The stored low power information may include an identifier (ID) for low power information or the reception time of the low power signal for managing the history.In step S 330 of FIG. 3, the Bluetooth communication unit 133 switches from the HCl mode to the power saving mode.As shown in FIGS. 4 and 5B, the Bluetooth communication unit 133 switches from the HCl mode to the power saving mode ( 406) in response to receiving the low power signal.The Bluetooth communication unit 133 switches from the HCl mode to the power saving mode in response to receiving the low power signal via the switching module. At this time, the HCl-type dual-mode Bluetooth processor of the Bluetooth communication unit 133 can be switched from the HCl-mode to the power saving mode.The HCl-type dual-mode Bluetooth processor that has switched to the low power mode can receive Bluetooth packets from the outside in the same manner as in the HCl mode. It is further contemplated that the HCI-type dual mode Bluetooth processor that has switched to the low power mode may receive Bluetooth packets from the outside in the same manner as in the HCI mode, unlike an existing HCI-type dual mode Bluetooth processor.In response to the switch to the low power mode, the HCl-type dual mode Bluetooth processor may store information about the switch to the low power mode in the first memory (not shown). The stored energy saving mode switching information may include an identifier (ID) for the energy saving mode switching information or the time for switching to the energy saving mode for managing the history.In step S 340 of FIG. 3, first control information associated with a first input detected in the remote controller 200 is received.As shown in FIGS. 4 and 5C, the first input (e.g., user input) is received at the POWER key of remote control 200 ( 407).The user selects the POWER key 261a of the remote controller 200. According to an exemplary embodiment, it is contemplated that this operation may be referred to as, for example, first user input 301. Here, the first user input 301 at the POWER key 261 a(or the selection of the POWER key 261 a) may include pressing the POWER key 261 a, touching the POWER key 261 a, and / or a touch gesture at the POWER key 261 a. It is further contemplated that selection of the POWER button 261 amay include a user's voice (e.g., associated with the "turn on" command) input via the microphone 263, or a user's gesture (e.g., drawing a circle upon grasping the remote control 200) detected via the sensor 264.The control unit 210 of the remote controller 200 may store information on selection of the POWER button associated with selection of the POWER button 261 ain the memory 280. The stored information about the selection of the POWER key may include an identifier (ID) for the selection of the POWER key or the selection time of the POWER key for managing the history.The control unit 210 may generate first control information to be transmitted to the display device 100 using the stored information about selection of the POWER button. In response to detecting the first user input 301, the controller 210 may load the first control information stored in the memory 280 or select the first control information from among a plurality of control information. The first control information may be control information for displaying the content 510 (e.g., a broadcast channel or a video) on the screen of the display device 100.FIG. 6 is a diagram illustrating an example Bluetooth packet format, according to an example embodiment.As shown in FIGS. 4 and 5C, the control unit 210 transmits the first control information to the display device 100 ( 408).The control unit 210 may transmit the first control information to the display device 100 via the communication unit 230. Here, the control unit 210 may transmit the first control information to the display device 100 using a Bluetooth packet via the short-range communication unit 232.The Bluetooth packet includes a Bluetooth classic packet and a Bluetooth low energy packet.When the first control information is the Bluetooth low energy packet, the control unit 210 of the remote controller 200 may transmit the first control information to the display device 100 in the form of the Bluetooth packet (1000 of FIG. 6 ).The Bluetooth packet 1000 includes, for example, an access code 1100 (72 bits) for determining the effectiveness of the packet, a header 1200 (54 bits), and a payload 1300 (0-2745 bits). The access code 1100 is used to determine the effectiveness of the packet. The header 1200 includes a media access control (MAC) address and a packet type. The payload may include data to be transmitted and has a size that varies depending on the type of packet to be transmitted. The first control information to be transmitted to the display device 100 may be included in the payload 1300 of the packet.The payload 1300 may include a payload length 1310, an advertisement data type 1320, flags values 1330, an advertisement data length 1340, an advertisement data type 1350, and proprietary data 1360. The first control information may be wholly or partly included in the manufacturer specific data 1360. The payload 1300 may also include CRC data 1370.The vendor specific data 1360 may include a business identifier (ID) 1361, a version 1362, a service ID 1363, and service specific data 1364. The first control information may be included in the service specific data 1364, completely or partially.The service specific data 1364 may include a device type 1364 a, a device status 1364 b, a Bluetooth device address 1364 c, and additional information 1364 d.The control unit 210 may periodically transmit the first control information to the display device 100 via the short-range communication unit 232.The Bluetooth communication unit 133 of the display device 100 whose screen is turned off receives the Bluetooth packet with the first control information transmitted from the remote controller 200. Here, the received first control information may be stored in the first memory under the control of the HCl type dual mode Bluetooth processor of the Bluetooth communication unit 133.In step S 350 of FIG. 3, a "wake-up signal" is transmitted from the Bluetooth communication unit 133 to the sub-processor of the display device 100.As shown in FIGS. 4 and 5C, the "wake-up signal" is transmitted from the Bluetooth communication unit 133 to the sub-processor of the display device 100 ( 409).The HCl-type dual-mode Bluetooth processor may analyze the received first control information. The HCI-type dual-mode Bluetooth processor may analyze the Bluetooth packet associated with the received first control information. According to the analysis result, the HCl type dual mode Bluetooth processor may transmit a wake-up signal for waking up the display device 100 to the sub-processor.In response to receiving the first control information, the HCl-type dual-mode Bluetooth processor may not analyze the first control information and transmit the wake-up signal directly to the sub-processor. After the wake-up signal is transmitted to the sub-processor, the HCl-type dual-mode Bluetooth processor may analyze the received first control information.In response to the wake-up signal transmitted from the Bluetooth communication unit 133 to the sub-processor, the display device 100 may be in the standby mode in which the screen is turned off.In step S 360 of FIG. 3, content is displayed on the display of the display device 100.As shown in FIGS. 4 and 5D, the display device 100 may switch from the standby mode to the normal mode ( 410).In response to the wake-up signal received from the Bluetooth communication unit 133, the sub-processor may wake up the main processor. In this case, the subprocessor may control the power supply 190 to supply power to the main processor.In response to waking up the main processor, the display device 100 may switch from the standby mode to the normal mode. The control unit 110 may control the power supply 190 to supply power to all of the internal elements 110 to 190 of the display device 100. Alternatively, the control unit 110 may control the power supply 190 to supply power to the internal elements 110 to 190 of the display device 100 except for some elements (e.g., the audio output device). It is further contemplated that the controller 110 may control the power supply 190 to sequentially supply power to the internal elements 110 to 190 of the display device 100.In response to the display device 100 being switched from the standby mode to the normal mode, the control unit 110 may output an "on" signal to the display 170 ( 411).The display 170 may be turned on under the control of the controller 110 (412).FIG. 5D illustrates a state in which the display device 100 shifts to the normal mode, turns on the display, and displays content.In response to the display device 100 being switched from the standby mode to the normal mode, the control unit 110 may transmit a screen-on signal representing content to the display 170. In response to the screen-on signal, the display 170 may begin displaying the content.In response to the display device 100 being switched from the standby mode to the normal mode, the control unit 110 may control the power supply 190 to supply power to the display 170.The powered display 170 displays the content 510 (e.g., a broadcast channel or a video). In addition to a broadcast channel, the content displayed on the display device 100 may include a video reproduced via an application installed on the display device 100, an image displayed via an application, or a web page displayed via a web browser.The controller 110 may provide visual feedback, e.g., an animation effect, in response to the content displayed on the display device 100. It is further contemplated that controller 110 may provide audible feedback via audio output device 175 in response to the content displayed on display device 100.As shown in FIGS. 4 and 5D, the control unit 110 may transmit a high-power signal to the Bluetooth communication unit 133 ( 413).The control unit 110 may transmit a high-power signal associated with the switching to the normal mode to the Bluetooth communication unit 133 in response to the switching of the display device 100 from the standby mode to the normal mode. The Bluetooth communication unit 133 may receive the high-power signal from the control unit 110 via the HCl. Here, the Bluetooth communication unit 133 may store high-energy information associated with the received high-energy signal in the first memory (not shown). The stored high-power information may include an ID for high-power information or the reception time of the high-power signal for managing the history.As shown in FIGS. 4 and 5D, the Bluetooth communication unit 133 switches from the power saving mode to the HCl mode in response to receiving the high-power signal (414).The Bluetooth communication unit 133 switches from the low power mode to the HCl mode in response to receiving the high power signal via the switching module. At this time, the HCl-type dual mode Bluetooth processor of the Bluetooth communication unit 133 can be switched from the low power mode to the HCl mode.In response to the HCl mode, the HCl type dual mode Bluetooth processor may store information about the switching to the HCl mode in the first memory (not shown). The stored information about the switching to the HCl mode may include an ID for the information about the switching to the HCl mode or the time for switching to the HCl mode for managing the history.The above-described control of the display device may be repeatedly performed.In step S 360 of FIG. 3, in response to the display of the content on the display device 100, the method of controlling the display device is ended.However, although the display device 100 and the remote controller 200 have been mainly described in the above-described exemplary embodiments, these above-described exemplary embodiments may be applied to various types of electronic devices. For example, the above-described exemplary embodiments may be applied only to a source device having an HCl type dual mode Bluetooth processor, or between a source device having an HCl type dual mode Bluetooth processor and external devices.The methods according to the exemplary embodiments may be implemented in the form of program instructions executable by various computers and recordable on a computer readable medium. The computer readable medium may include program instructions, data files, and data structures, either alone or in combination. The computer-readable medium may be stored, for example, in a volatile or nonvolatile memory such as a ROM, a memory such as a RAM, a memory chip, a device, an integrated circuit, or a storage medium that records optically or magnetically and can be simultaneously read by a machine (e.g., a computer) such as a CD, a DVD, a magnetic disk, or a magnetic tape regardless of whether or not the computer-readable medium can delete or resume data.A memory that may be included in a mobile terminal may be an example of a program including instructions for implementing example embodiments of the present disclosure, or a storage medium suitable for storing programs and readable by a machine. The program instructions recorded on the medium are specifically designed and configured for the present disclosure or may be well known to and used by one of ordinary skill in the art of computer software.In addition to the foregoing, the following enumerated aspects are also relevant to the present disclosure as part of the specification, which is not to be confused with the appended claims (which follow the specification):Aspect 1: A display device comprising a display, Bluetooth communication circuits comprising a Bluetooth processor and configured to be selectively operated in one of host controller interface (HCl) and power saving modes, and a control unit configured to control the display and the Bluetooth communication circuits, wherein in a normal mode in which the display is turned on, the control unit is configured to control the Bluetooth communication circuits to be operated in the HCl mode, while in a standby mode in which the display is turned off, the control unit is configured to control the Bluetooth communication circuits to be operated in the power saving mode.Aspect 2: The display device according to Aspect 1, further comprising a power supply, wherein the control unit is configured to control the power supply to supply power to the Bluetooth communication circuits in the standby mode.Aspect 3: The display device of Aspect 1, wherein the Bluetooth communication circuits are configured to operate as either an HCl mode profile or a power saving mode profile according to a state of the display device.Aspect 4: The display device of Aspect 1, wherein in the HCl mode, the controller is configured to execute a Bluetooth stack and control the Bluetooth stack to cooperate with the Bluetooth processor via an HCl of the Bluetooth communication circuits.Aspect 5: The display device according to Aspect 1, wherein the Bluetooth communication circuits are configured to be operated independently of the control unit in the power saving mode.Aspect 6: The display device according to aspect 1, wherein the control unit includes a main processor and a sub-processor, and wherein the Bluetooth communication circuits are configured to communicate with the sub-processor in the power saving mode.Aspect 7: The display device of aspect 6, wherein the Bluetooth communication circuits are configured to receive control information from a remote controller in the power saving mode.Aspect 8: The display device according to Aspect 7, wherein the Bluetooth communication circuits are configured to transmit a wake-up signal to the sub-processor of the control unit according to receipt of the control information.Aspect 9: The display device according to Aspect 8, wherein the control unit is configured to control the display device to transition to the normal mode in response to the wake-up signal, and wherein the control unit is configured to control the display device to display content on the display in response to the transition to the normal mode.Aspect 10: a method of controlling a display device selectively operating in one of host controller interface (HCl) and power saving modes, the method comprising: operating the Bluetooth communication circuits of the display device in the HCl mode when the display device is operated in a normal mode in which a display of the display device is turned on; operating the Bluetooth communication circuits in the power saving mode when the display device is in a standby mode in which the display is turned off; and switching the display device from the standby mode to the normal mode in response to the Bluetooth communication circuits receiving control information from a remote controller.Aspect 11: The method of aspect 10, wherein operating in the HCl mode comprises cooperating the Bluetooth communication circuitry with a main processor of the display device and allowing a Bluetooth processor of the Bluetooth communication circuitry to cooperate with a Bluetooth stack of the display.Aspect 12: The method of aspect 10, wherein operating in the low power mode comprises communicating, via the Bluetooth communication circuitry, with a sub-processor of the display device and operating a Bluetooth processor of the Bluetooth communication circuitry independent of a Bluetooth stack of the display.Aspect 13: The method of aspect 10, wherein the switching to the HCl mode includes transmitting, through the Bluetooth communication circuits, a wake-up signal to a sub-processor of the display device in response to receiving the control information.Aspect 14: The method of aspect 10, wherein the control information comprises one of a BLE packet following a Bluetooth Low Energy standard and a Bluetooth classic packet following a Bluetooth classic standard.Aspect 15: The method of aspect 10, further comprising outputting feedback to the display.Although the present disclosure has been described in connection with certain exemplary embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as set forth in the appended claims.Therefore, the scope of the disclosure is defined not by the detailed description but by the appended claims, and all differences within the scope are considered to be included in the disclosure.

Claims

A display device comprising: a display; a Bluetooth communication unit configured to communicate with a remote control; A controller electrically coupled to the display and the Bluetooth communication unit and configured to: receive a user's voice input associated with a power-on command when the display device is in a standby mode in which the display of the display device is turned off, control the display of the display device to power it on based on receiving the user's voice input, and execute a Bluetooth stack to communicate with the Bluetooth communication unit, and control the Bluetooth communication unit to operate in a host controller interface (HCl) mode when the display device is in a normal mode in which the display of the display device is turned on.The display device of claim 1, wherein the user's voice input is associated with a command to turn on the display of the display device.The display device according to claim 1, wherein the control unit is further configured to: switch the display device from the standby mode to the normal mode in which the display of the display device is turned on, based on the received voice input of the user.The display device according to claim 1, wherein the control unit is further configured to: receive the voice input of the user in the power saving mode of the Bluetooth communication unit when the display device is in the standby mode in which the display of the display device is turned off.The display device of claim 1, wherein the control unit is further configured to: switch the Bluetooth communication unit from a power saving mode to the HCl mode based on the received voice input of the user.The display device of claim 1, wherein the control unit is further configured to: receive the user's voice input from the remote controller via the Bluetooth communication unit, wherein the user's voice input is based on selection of a key of the remote controller.The display device of claim 1, wherein the user's voice input is via a microphone of the remote control.The display device of claim 1, wherein the Bluetooth communication unit is in an activation state in the power saving mode such that the Bluetooth communication unit receives at least one Bluetooth packet from the remote control.The display device of claim 1, wherein the user input is a first user input, and wherein the controller is further configured to: receive a second user's voice input associated with a power-off command when the display device is in a normal mode in which the display of the display device is powered on, and control the display of the display device to power-off based on the received second user's voice input.The display device of claim 9, wherein the control unit is further configured to: switch the display device from the normal mode to the standby mode and the Bluetooth communication unit from the HCl mode to the power saving mode based on the reception of the second voice input from the user.A computer program product comprising instructions that, when executed by a processor of a display device comprising a display and a Bluetooth communication unit and configured to communicate with a remote control, cause the display device to: receive a user's voice input associated with a power-on command when the display device is in a standby mode in which the display of the display device is turned off, control the display of the display device to turn it on based on receiving the user's voice input, and execute a Bluetooth stack to communicate with the Bluetooth communication unit, and control the Bluetooth communication unit to operate in a host controller interface (HCl) mode when the display device is operated in a normal mode, in which the display of the display device is switched on.The computer program product of claim 11, wherein the user's voice input is associated with a command to turn on the display of the display device.The computer program product of claim 11, wherein the instructions, when executed by the processor, cause the display device to: switch the display device from the standby mode to the normal mode in which the display of the display device is turned on based on the received voice input from the user.The computer program product of claim 11, wherein the instructions, when executed by the processor, cause the display device to: receive the user's voice input in the low power mode of the Bluetooth communication unit when the display device is in the standby mode in which the display of the display device is turned off.The computer program product of claim 11, wherein the instructions, when executed by the processor, cause the display device to: switch the Bluetooth communication unit from a low power mode to the HCl mode based on the received voice input from the user.

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