Electronic device and control method thereof

Abstract

An electronic device is provided. The electronic device includes: a signal receiver that receives a first wireless signal; a signal transmitter that outputs a second wireless signal; and a processor that, when the first wireless signal corresponding to an input key is repeatedly received by the signal receiver, identifies an external device as a target to be operated based on the input key, and controls the signal transmitter to repeatedly output a second wireless signal based on the reception of the first wireless signal, wherein the second wireless signal is used by the identified external device to identify the input key. Each of the first wireless signal and the second wireless signal alternates between a signal portion and an idle portion based on a given cycle, and the processor controls the signal transmitter to output the second wireless signal in the idle portion of the first wireless signal.

Description

Technical Field

[0001] The present disclosure relates to an electronic device, a method of controlling the electronic device, a display device, and a universal remote controller. Background Art

[0002] A display device that displays an image based on an image signal received or generated from the outside includes various parts that can be classified according to the function of a display panel for displaying an image. In addition, the display device can be used together with various peripheral devices.

[0003] For example, the display device can be used together with an external device and an input device such as a remote controller. In this case, a universal remote controller supporting Bluetooth and infrared communication can use infrared communication when paired with the display device, and only uses Bluetooth signals or uses both Bluetooth signals and infrared signals when controlling the display device. When the universal remote controller is paired with the display device and controls the external device, the Bluetooth signal is sent to the display device, the display device receives the Bluetooth signal, and the display device selects the external device to be controlled according to the current display environment. For example, when the display environment of the display device involves a set-top box, the channel button input by the universal remote controller is converted into a set-top box channel button, so that an infrared signal can be transmitted to the set-top box directly or by the universal remote controller. In this case, the Bluetooth signal of the universal remote controller and the infrared signal transmitted from the display device will not interfere with each other, and the operation can be performed normally. However, such a conventional universal remote controller must include both an infrared communication module and a Bluetooth communication module, thus increasing the manufacturing cost. Summary of the invention

[0004] Solution to the problem

[0005] A solution is provided for universally controlling both an electronic device and an external device through an inexpensive infrared interface to reduce costs.

[0006] According to an embodiment of the present disclosure, an electronic device is provided, comprising: a signal receiver configured to receive a first wireless signal; a signal transmitter configured to output a second wireless signal; and a processor configured to identify an external device as a target to be operated based on the input key when the first wireless signal corresponding to an input key is repeatedly received through the signal receiver, and based on the reception of the first wireless signal, control the signal transmitter to repeatedly output a second wireless signal, wherein the second wireless signal is used by the identified external device to identify the input key, each of the first wireless signal and the second wireless signal alternates between a signal portion and an idle portion based on a given period, and the processor controls the signal transmitter to output the second wireless signal in the idle portion of the first wireless signal.

[0007] The first wireless signal includes a first signal portion and a second signal portion in a next cycle after the first signal portion, and the second signal portion is shorter than the first signal portion.

[0008] The first signal portion includes input key data, and the second signal portion includes a preset waveform indicating the same key as the first signal portion but not including the key input data.

[0009] The second signal portion of the first wireless signal is recognized as noise by the external device.

[0010] The first wireless signal includes first to third signal portions, and the third signal portion is shorter than the first and second signal portions.

[0011] The first signal portion and the second signal portion include input key data, and the third signal portion includes a preset waveform indicating the same key as the first signal portion and the second signal portion but not including the key input data.

[0012] The third signal portion is recognized as noise by the external device.

[0013] The second wireless signal includes a second signal portion that is shorter than the first signal portion.

[0014] The signal in the first signal portion includes input key data, and the signal in the second signal portion does not include the input key data and is recognized by the external device as being identical to the signal in the first signal portion.

[0015] The processor performs an operation based on an input key indicated by a first wireless signal in a first mode, and controls output of a second wireless signal to be recognized by an external device based on the first wireless signal in a second mode.

[0016] The processor controls output of a second wireless signal having a longer period than the first wireless signal based on the first wireless signal in the second mode.

[0017] The first wireless signal includes first to third signal portions, the second and third signal portions are shorter than the first signal portion, and the processor controls the output of the second wireless signal based on the third signal portion.

[0018] According to an embodiment of the present disclosure, a method performed by an electronic device is provided, the method comprising: receiving a first wireless signal indicating an input key; identifying an external device as a target to be operated based on the input key when the first wireless signal is repeatedly received; and repeatedly outputting a second wireless signal based on the reception of the first wireless signal, wherein the second wireless signal is used by the identified external device to identify the input key, each of the first wireless signal and the second wireless signal alternates between a signal portion corresponding to the input key and an idle portion based on a given period, and the second wireless signal is output in the idle portion of the first wireless signal.

[0019] According to an embodiment of the present disclosure, a display device is provided, comprising: a display configured to display an image; a signal receiver configured to receive a first wireless signal; a signal transmitter configured to output a second wireless signal; and a processor configured to identify an external device as a target to be operated based on the input key when the first wireless signal corresponding to an input key is repeatedly received through the signal receiver, and based on the reception of the first wireless signal, control the signal transmitter to repeatedly output a second wireless signal, wherein the second wireless signal is used by the identified external device to identify the input key, each of the first wireless signal and the second wireless signal alternates between a signal portion corresponding to the input key and an idle portion based on a given period, and the processor controls the signal transmitter to output the second wireless signal in the idle portion of the first wireless signal.

[0020] According to an embodiment of the present disclosure, a remote controller for controlling an electronic device is provided, the remote controller comprising: a key-input receiver configured to receive key input; a signal transmitter configured to output a wireless signal; and a processor configured to control the signal transmitter to output the wireless signal, the processor controlling the signal transmitter to output the wireless signal that does not include the input key data based on continuous reception of the same key input. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent through the following description in conjunction with the accompanying drawings, in which:

[0022] Figure 1 is a schematic diagram of a universal remote controller, an electronic device, and an external device according to an embodiment;

[0023] Figure 2 is a block diagram of a universal remote controller, a display device, and a set-top box according to an embodiment;

[0024] Figure 3 is a flow chart of outputting a first infrared signal in a universal remote controller according to an embodiment;

[0025] Figure 4shows waveforms of a first infrared signal output from a universal remote controller and a second infrared signal output from a display device according to an embodiment;

[0026] Figure 5 The first signal portion according to an embodiment is shown Figure 4 The waveform of the first infrared signal;

[0027] Figure 6 is a flowchart of operating a display device according to an embodiment; and

[0028] Figures 7 to 11 Waveforms of a first infrared signal output from a universal remote controller and a second infrared signal output from a display device according to an embodiment are shown. DETAILED DESCRIPTION

[0029] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings. In the accompanying drawings, similar numbers or symbols refer to similar elements with substantially the same functions. However, the configurations and functions shown should not be interpreted as limiting. In the following description, details about well-known functions or features may be omitted for the sake of brevity.

[0030] As used herein, the terms "1st" or "first" and "2nd" or "second" may use corresponding components, regardless of their importance or order, and are used to distinguish one component from another without limiting the components. Moreover, it will be understood that the terms "comprise", "include", "have", etc. do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof. In addition, a "module" or "part" can perform at least one function or operation, can be implemented by hardware, software, or a combination of hardware and software, and can be integrated into at least one module. In addition, expressions such as "at least one" modify the entire column of elements when they are after a column of elements, rather than modifying the individual elements in the column. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0031] Figure 1 is a schematic diagram of a universal remote controller 10, an electronic device 2, and an external device 3 according to the first embodiment.

[0032] The universal remote controller 10 is used to control both the electronic device 2 and the external device 3. The electronic device 2 may be a display device 20, a personal computer, a server, a notebook computer, etc. The electronic device 2 and the external device 3 are connected via a connector 4, and exchange data such as image signal data with each other, wherein the connector 4 may include a wired or wireless interface.

[0033] The electronic device 2 and the external device 3 are connected to / access each other through the connector 4. For example, the connector 4 may include a High Definition Multimedia Interface (HDMI) interface. The electronic device 2 receives an audio / video (AV) signal and a control signal from the external device 3 through the connector 4.

[0034] The connector 4 for connecting the external device 3 and the electronic device 2 is not limited to the HDMI interface, but other wired or wireless interfaces of various standards may be adopted.

[0035] For example, the wired interface may be a cable of a predetermined standard. The wireless interface may include at least one of Wi-Fi, Wi-Fi Direct, or Bluetooth.

[0036] In the electronic device 2 according to the embodiment, the external device 3 may be a set top box (STB) 30 that outputs a signal to be displayed by the electronic device 2 as an image of various contents. In the electronic device 2 according to the embodiment, the external device 3 may be a one connect (OC) box connected to the electronic device 2 via a single cable.

[0037] The external device 3 receives contents from a plurality of image sources, ie, signal sources.

[0038] In the present disclosure, the external device 3 is not limited to the STB, but may include, for example, an OC box, a media box, an over-the-top (OTT) box, a Blu-ray, a digital versatile disk (DVD) or other optical disk player, a desktop computer, a laptop computer or other personal computer (PC), a mobile device such as a smart phone, a tablet computer or other smart board, etc. In addition, the external device 3 may receive content provided in the form of a real-time streaming file via a wired or wireless network.

[0039] Figure 2 is a block diagram of a universal remote controller 10, a display device 20, and a STB 30 according to an embodiment.

[0040] like Figure 2 As shown, the universal remote controller 10 transmits a wireless signal, for example, a first infrared (IR) signal, to the electronic device 20 to control the display device 20 and the STB 30. The universal remote controller 10 includes a key-input receiver 11, a first processor 12, and a first wireless signal transmitter 13.

[0041] The key-input receiver 11 may include a TV button 102 for controlling the display device 20 and an STB button 104 for controlling the STB 30. The TV button 102 may, for example, include a power button, a volume button, etc. of the display device 20. The STB button 104 may include a power button, a channel button, etc. of the STB. When the user presses the TV button 102 or the STB button 104, the corresponding key input is received.

[0042] In response to the key input received from the key-input receiver 11, the first processor 12 controls the first wireless signal transmitter 13 to output input-key data, ie, a first IR signal having control target device information and key information.

[0043] The first processor 12 performs control to operate general elements of the universal remote controller 10. The first processor 12 executes a control program (or instruction) to perform such control operation. The first processor 12 includes at least one general processor that loads at least a part of the control program from a non-volatile memory in which the control program is installed into a volatile memory and executes the loaded control program, and may be implemented by, for example, a central processing unit (CPU), an application processor (AP), or a microprocessor.

[0044] In the present disclosure, the first processor 12 may be implemented as included in a main system on chip (SoC) mounted on a built-in printed circuit board (PCB) of the universal remote controller 10 .

[0045] The first wireless signal transmitter 13 transmits a first IR signal of a predetermined frequency band to the display device 20 .

[0046] The first wireless signal transmitter 13 may be implemented as a communication circuit including at least one electronic device for outputting infrared light. According to an embodiment, the first wireless signal transmitter 13 includes one or more IR light emitting diodes (hereinafter, referred to as IR LEDs or IREDs).

[0047] According to an embodiment, the first wireless signal transmitter 13 may include a signal generator to generate the first IR signal. The signal generator may generate an IR signal modulated by a predetermined frequency band (eg, a carrier frequency of 38 kHz, 40 kHz, 56 kHz, etc.).

[0048] The display device 20 may receive and process broadcast content based on at least one of a broadcast signal, broadcast information, or broadcast data received from a transmitter of a broadcast station. The display device 20 may wirelessly receive a radio frequency (RF) signal, i.e., a broadcast signal, from a broadcast station. The display device 20 may include an antenna for receiving a broadcast signal and a tuner to tune to a channel for the broadcast signal.

[0049] The broadcast signal may be received through ground waves, cables, satellites, etc., and the signal source is not limited to a broadcast station. In other words, according to the present disclosure, any device or station capable of transceiving data may be included in the image source.

[0050] The display device 20 can be used as a smart TV or an Internet Protocol (IP) TV. A smart TV refers to a TV that can receive and display broadcast signals in real time, support a web browsing function for searching and consuming various contents through the Internet while displaying the broadcast signals in real time, and provide a convenient user environment. In addition, the smart TV includes an open source software platform to provide interactive services to users. Therefore, the smart TV can provide users with various contents, for example, applications for providing predetermined services through an open source software platform. Such applications refer to applications for providing various services, and may include, for example, applications for providing services such as social networking services, finance, news, weather, maps, music, movies, games, e-books, etc.

[0051] The standard of the signal received in the display device 20 may be configured by various methods corresponding to the type of the device. For example, the image content may be received through a cable based on HDMI, composite video, component video, super video, SCART (Syndicat desConstructeurs d'Appareils Radiorécepteurs et Téléviseurs, Association of Radio Receiver and Television Manufacturers), Universal Serial Bus (USB), or other standards.

[0052] The display device 20 may receive image content from various external devices such as the STB 30 through wired or wireless network communication, and there is no limitation on the kind of communication.

[0053] Specifically, the display device 20 may perform at least one of wireless communication using an access point (AP) or wireless communication for direct connection with other devices without an AP. For example, the display device 20 may receive content from an image source via wireless network communication such as Wi-Fi, Wi-Fi Direct, or Bluetooth. In addition, the display device 20 may receive content via wired network communication such as Ethernet.

[0054] The display apparatus 20 according to the embodiment performs wireless communication with peripheral devices such as the universal remote controller 10. The wireless communication may include IR communication using a predetermined frequency band.

[0055] Refer again Figure 2 The display device 20 includes a first wireless signal receiver 21, a second processor 22, a second wireless signal transmitter 23, an image signal receiver 24, an image signal processor 25, a memory 26 and a display 27.

[0056] The first wireless signal receiver 21 receives Figure 4The first IR signal shown. The first wireless signal receiver 21 may be implemented by a communication circuit including at least one electronic device that detects IR light of a predetermined wavelength and generates an electrical signal. According to an embodiment, the first wireless signal receiver 21 includes an IR photodiode.

[0057] According to an embodiment, the first wireless signal receiver 21 may be installed, for example, in a specific area (e.g., lower portion) of the front edge (i.e., frame) of the display device 20. In this case, the first wireless signal receiver 21 may be installed adjacent to the second wireless signal transmitter 23.

[0058] According to an embodiment, the first wireless signal receiver 21 is provided in the display device 20. According to an alternative embodiment, when the first wireless signal receiver 21 is provided in the STB 30, the electronic device 2 is implemented as the STB 30, and the external device 3 is implemented as the display device 20.

[0059] The second processor 22 performs control to operate general elements of the display device 20. The second processor 22 executes a control program (or instruction) to perform such control. The second processor 22 includes at least one general processor that loads at least a part of the control program from a non-volatile memory in which the control program is installed into a volatile memory and executes the loaded control program, and may be implemented by, for example, a CPU, an application processor (AP), or a microprocessor.

[0060] The second processor 22 may include a single core, a dual core, a triple core, a quad core, and other multiple cores. The second processor 22 may include multiple processors, for example, a main processor and an auxiliary processor that operates in a sleep mode (during this mode, only standby power is provided without operating the display device). In addition, the processor, ROM, and RAM are connected to each other through an internal bus, and the ROM and RAM are included in the memory 26.

[0061] The second processor 22 may be implemented to be included in a main SoC mounted on a PCB provided inside the display device 20. Alternatively, the main SoC may further include an image processor.

[0062] The control program may include a program implemented by at least one of a basic input / output system (BIOS), a device driver, an OS, a firmware, a platform, or an application. According to an embodiment, the application may be pre-installed or stored in the display device 20 when the display device 20 is manufactured, or may be installed in the display device 20 based on application data received from the outside when needed in the future. For example, the application data may be downloaded to the display device 20 from an external server such as an application market. Such an external server is merely an example of a computer program product according to the present disclosure, and the embodiment is not limited thereto.

[0063] According to an embodiment, the operation of the second processor 22 may be implemented by a computer program stored in a computer program product provided separately from the display device 20. In this case, the computer program product includes a memory in which instructions corresponding to the computer program are stored, and a processor. When the instructions are executed by the second processor 22, the third to nth first IR signals SB2, SB3, ..., SBn given in the form of short burst signals of the first IR signal of the universal remote controller 10 may be received in the first wireless signal receiver 21, such as Figure 4 As shown. The first first IR signal IR1 with input key data may precede these first IR signals. Based on the third to nth first IR signals SB2, SB3, ..., SBn, the second wireless signal transmitter 23 may be controlled to output a second wireless signal, such as a second IR signal. In this case, the second processor 22 controls the second wireless signal transmitter to output the second IR signal in the idle portion of the first IR signal. Below, the control operation of the second processor 22 will be described in detail through the operation of the display device 20 described later.

[0064] In order to control the STB 30, the second wireless signal transmitter 23 outputs a second IR signal under the control of the second processor 22. The second wireless signal transmitter 23 can be implemented as a communication circuit including at least one electronic device capable of outputting infrared light. According to an embodiment, the second wireless signal transmitter 23 includes one or more IR light emitting diodes (hereinafter, also referred to as IR LEDs or IREDs).

[0065] According to an embodiment, the second wireless signal transmitter 23 may include a signal generator to generate a second IR signal. The signal generator may generate an IR signal modulated by a predetermined frequency band (eg, a carrier frequency of 38 kHz, 40 kHz, 56 kHz, etc.).

[0066] The image signal receiver 24 receives contents from an image source. The image signal receiver 24 includes a tuner to be tuned to a channel for broadcasting signals.

[0067] The image signal receiver 24 includes a connector 4, such as an HDMI interface, and the display device 20 is connected to an external image source via a wire through the connector 4. The display device 20 can receive content from an image source such as the STB 30 through the wired connection connector.

[0068] The connector 4 may be implemented by a communication circuit including a data input / output interface in which ports corresponding to various communication protocols, communication modules (eg, S / W modules, chips, etc.), and the like are combined.

[0069] Connector 4 receives signals from an image source, but may be configured to send and receive signals interactively.

[0070] According to the embodiment, the connector 4 is connected to the image source through an HDMI cable, but the connection method is not limited to the HDMI method. In addition, the display device 20 and the image source may be wirelessly connected through a communicator including a wireless communication module such as Wi-Fi.

[0071] According to an embodiment, the device connected to the display device 20 via a cable through the connector 4 includes an image source such as STB 30, an optical disc player, a PC, etc., but the present disclosure is not limited thereto. For example, according to an alternative embodiment, the display device 20 can be connected to a mobile device via a cable through the connector 4.

[0072] The image signal processor 25 performs various audio / video processing preset on the image signal of the content. The image signal processor 25 outputs the image signal generated or combined by performing such an image processing process to the display 27, thereby displaying an image based on the image signal. The image signal processed by the image signal processor 25 may be based on data stored in a nonvolatile memory 26 such as a flash memory, a hard disk drive (HDD), or the like.

[0073] The image signal processor 25 includes a decoder for decoding the image signal to correspond to the image format of the display device 20, and a scaler for adjusting the image signal to correspond to the output resolution of the display panel. According to an embodiment, the decoder can be implemented by, for example, a Moving Picture Experts Group (MPEG) decoder. However, there is no limitation on the type of content to be processed by the image signal processor 25. For example, the content to be processed by the image signal processor 25 may include moving images such as video clips, but may also include still images such as JPEG files, pictures, wallpapers, etc.

[0074] There is no limitation on the kind of image processing performed by the image signal processor 25. For example, the image signal processor 25 may also perform at least one of various processes such as deinterlacing, detail enhancement, frame refresh rate conversion, and line scanning for converting an interlaced broadcast signal into a progressive broadcast signal.

[0075] The image signal processor 25 may be implemented by a group of separate elements for independently performing such a process, or may be included in a main system on chip (SoC) in which many functions are integrated. The main SoC may also include at least one microprocessor or central processing unit (CPU) as an example of a second processor 22 (described later).

[0076] According to an embodiment, the image signal processor 25 may be implemented by a video board, in which various chipsets, memories, electronic components, wiring, and other circuit components for performing such a process are mounted to a PCB. In this case, the image signal processor 25 and the second processor 22 of the display device 20 may be provided on a single video board. Of course, this is only an example, and alternatively, the image signal processor 25 and the second processor 22 may be arranged in a plurality of printed circuit boards connectable to each other.

[0077] The memory 26 may be configured to store various data of the display device 20. The memory 26 may be implemented by a non-volatile memory (or a writable ROM) that can mirror changes and retain data even when the display device 20 is powered off. That is, the memory 26 may be set to one of a flash memory, an HDD, an electrically programmable ROM (EPROM), or an electrically erasable programmable ROM (EEPROM). The memory 26 may also include a dynamic RAM (DRAM), a static RAM (SRAM), or other volatile memory, the read or write speed of which is faster than that of a non-volatile memory.

[0078] The data stored in the memory 26 may include, for example, not only an operating system (OS) for driving the display device 20 but also various software, programs, applications, image data, additional data, etc. executable on the OS.

[0079] The memory 26 may be configured to store graphic data as additional data. The graphic data is output to the display 27 as an image signal processed by the image signal processor 25, and may be displayed as a graphic such as an on-screen display (OSD), a graphical user interface (GUI, hereinafter also referred to as a "user interface (UI)"), etc. in a specific area on the screen forming the display panel 27.

[0080] According to an embodiment, the memory 26 is configured to store input key data of the first IR signal received from the first wireless signal receiver 21 , for example, control target device information, key information, etc. of the external device 3 .

[0081] According to an embodiment, the memory 26 is configured to store information about the second IR signal (ie, reference signal) output from the second wireless signal transmitter 23. The second IR signal has a preset length and waveform corresponding to the received first IR signal.

[0082] The display 27 displays an image based on the image signal processed by the image signal processor 25 .

[0083] The display 27 includes a display panel having a screen to display images. The display panel may be implemented in various ways without limitation, for example, by liquid crystal, plasma, light emitting diode, organic light emitting diode, surface conduction electron emitter, carbon nanotube, nanocrystal or other display types.

[0084] In addition to the display panel for displaying images, the display 27 may also include additional elements (e.g., a driver) according to its type. The driver may be implemented by one or more driver integrated circuits (ICs) and outputs electrical signals for driving light sources, electronic components forming a screen or other display surfaces, so that the display panel can display images based on image signals received from the image signal processor 25.

[0085] Refer again Figure 2 , the STB 30 includes a second wireless signal receiver 31 , a third processor 32 , an operation executor 33 , and an image signal transmitter 34 .

[0086] The second wireless signal receiver 31 receives the second wireless signal from the second wireless signal transmitter 23 of the display device 20. Figure 4 The second IR signal shown. The second IR signal includes button information, for example, the channel number of the universal remote controller 10 pressed by the user. The second wireless signal receiver 31 can be implemented by a communication circuit including at least one electronic component that generates an electrical signal by detecting IR light having a predetermined wavelength. According to an embodiment, the second wireless signal receiver 31 includes an IR photodiode.

[0087] The third processor 32 performs control to operate general elements of the STB 30. The third processor 32 executes a control program (or instruction) to perform such control operation. The third processor 32 analyzes the second IR signal received from the second wireless signal receiver 31 and performs control corresponding to the input data. The third processor 32 processes the short pulse signal (i.e., the second to nth first IR signals SB1 to SBn) transmitted from the first wireless signal transmitter 13 of the universal remote controller 10 as a noise signal. As a result, the second to nth first IR signals SB1 to SBn of the universal remote controller 10 and the first to nth second IR signals MBR1, MBR2, ..., MBRn of the display device 20 are processed in the STB 30 without interference.

[0088] The third processor 32 includes at least one general processor that loads at least a portion of a control program from a non-volatile memory in which the control program is installed into a volatile memory and executes the loaded control program, and may be implemented, for example, by a central processing unit (CPU), an application processor (AP), or a microprocessor.

[0089] The operation executor 33 performs various functions under the control of the third processor 32. The operation executor 33 may include, for example, a broadcast reception and signal processor that receives an image signal from a broadcast station and processes the signal. The broadcast reception and signal processor changes a channel for the second IR signal under the control of the third processor 32. In addition, the broadcast reception and signal processor processes the broadcast signal received from the changed channel into video, audio and other data, and then outputs them to the image signal transmitter 34.

[0090] The image signal transmitter 34 outputs the image data processed by the operation executor 33 (eg, broadcast reception and signal processor) to the display device 20 under the control of the third processor 32 .

[0091] Below, we will refer to Figure 3 and Figure 4 The operation of the universal remote controller 10 to output the first IR signal is described in detail.

[0092] Figure 3 is a flow chart of outputting a first IR signal in a universal remote controller, Figure 4 1 shows waveforms of a first IR signal output from a universal remote controller and a second IR signal output from a display device according to a first embodiment, Figure 5 The first signal portion is shown in Figure 4 The waveform of the first IR signal.

[0093] refer to Figure 3 , at operation S11, a key input is received from the key-input receiver 11. The key input includes input key data, that is, information related to a control target device to be controlled by a user who presses the button 102 or 104. For example, the control target device information includes key information about a function of a control target device such as the display device 20 or the STB 30.

[0094] At operation S12, the key input is transmitted to the first processor 12. The first processor 12 controls the first wireless signal transmitter 13 to output a first IR signal having input key data corresponding to the received key input.

[0095] As a non-limiting example, the first IR signal has a period of about 108 milliseconds (ms). However, it may be difficult for a user to accurately touch and press a button in synchronization with about 108 ms, and thus the user presses the button for much longer than about 108 ms.

[0096] In operation S13, the first processor 12 identifies whether the user continuously presses the button 102 or 104, that is, whether the key input is continuously received. For example, the first processor 12 can determine whether the same key input is received within a threshold time period. When the key input is not continuously received, the first processor 12 stops outputting the first IR signal. On the other hand, when the key input is continuously received, the first processor 12 performs operation S14.

[0097] In operation S14, when key inputs are continuously received, the first processor 12 controls the first wireless signal transmitter 13 to output, for example, a short pulse signal.

[0098] refer to Figure 4 , the first IR signal includes first to nth first IR signals IR1, SB1, SB2, ..., SBn. The first to nth first IR signals IR1, SB1, SB2, ..., SBn have first to nth periods T1, T2, T3, ..., Tn, respectively. The first to nth periods T1, T2, T3, ..., Tn have first to nth signal parts SP1, SP2, SP3, ..., SPn and first to nth idle parts IP1, IP2, IP3, ..., IPn. The first period T1 has, for example, a first signal part SP1 of about 60 ms and an idle part IP1 of, for example, 70 ms. The second to nth periods T2, T3, ..., Tn can, for example, have a time length of 180 ms.

[0099] like Figure 4 As shown, the second IR signal includes first to nth second IR signals MBR1, MBR2, ..., MBRn corresponding to the third to nth first IR signals SB2, ..., SBn of the first IR signal. The second IR signal has a blank portion BK, in which the second IR signal corresponding to the first first IR signal IR1 and the second first IR signal SB1 of the first IR signal is not generated. The first to nth second IR signals MBR1, MBR2, ..., MBRn have first to nth periods T1', T2', ..., Tn', respectively. The first to nth periods T1', T2', ..., Tn' have first to nth signal portions SP1', SP2', ..., SPn' and first to nth idle portions IP1', IP2', ..., IPn'. The first to nth periods T1', T2', ..., Tn' may have a time length of 180 ms, for example.

[0100] Figure 5The waveform of the first signal portion SP1 is shown by way of example. As shown therein, the first signal portion SP1 includes a guide code, a custom code, a custom inverse code, a data code, and a data inverse code as a national electrical code. The custom code refers to a code for identifying a control target device such as the display device 20 or the STB 30, and the custom inverse code refers to a custom code for error checking. The data code refers to a code related to key information about functions such as channels, volume, etc. of the display device 20 or the STB 30, and the data inverse code refers to a data code for error checking.

[0101] The first idle portion IP1 is a portion where no signal is transmitted.

[0102] The second to nth signal parts SP2, SP3, ..., SPn include short pulse signals narrower than the first signal part SP1. The short pulse signal does not include input key data, for example, at least one of a custom code, a custom inverse code, a data code, and a data inverse code. Therefore, the short pulse signal is regarded as noise by an external device 3 such as an STB 30. On the other hand, the electronic device 2 such as a display device 20 is pre-set to recognize that the short pulse signal is equivalent to the signal of the first signal part SP1 when receiving the short pulse signal.

[0103] Hereinafter, the operation of the display device 20 receiving and processing the first IR signal of the universal remote controller 10 will be described in detail.

[0104] Figure 6 is a flowchart illustrating the operation of the display device according to the embodiment.

[0105] The first wireless signal receiver 21 receives a first IR signal from the universal remote controller 10 in operation S21 .

[0106] In operation S22, the second processor 22 analyzes the input key data by analyzing the received first IR signal. In this case, the input key data can be used to identify information about the control target device to be controlled and information about the key indicating the function to be controlled.

[0107] In operation S23, the second processor 22 identifies whether the control target device is an external device based on the analyzed input key data. When the control target device is not an external device but itself, that is, an electronic device (e.g., display device 20), operation S24 of the first mode is performed. When the control target device is an external device (e.g., STB 30), operation S25 of the second mode is performed.

[0108] In operation S24, the second processor 22 controls a function of the display device 20, such as volume or power, based on the input key data from the first IR signal.

[0109] In operation S25, in response to the reception of the first IR signal, the second processor 22 controls the second wireless signal transmitter 23 to iteratively output the second IR signal, which allows the identified external device to identify the input key. In this case, each of the first IR signal and the second IR signal alternates between a signal portion and an idle portion based on a given cycle. The second processor 22 controls the second IR signal within the idle portion of the first IR signal so that the first IR signal and the second IR signal do not interfere with each other.

[0110] According to the first embodiment, the iterative first IR signal showing the same input key as the initial IR signal is replaced with a short pulse signal, thereby ensuring a relatively sufficient idle portion. Such a short pulse signal not only ensures a sufficient idle portion, but also allows an external device to recognize the short pulse signal as noise, thereby shortening the time taken to iteratively process the first IR signal. As a result, even if the second IR signal is output immediately upon receiving the short pulse signal, there is no interference.

[0111] Below, we will refer to Figure 4 The first embodiment is described in detail.

[0112] The first IR signal includes first to nth first IR signals IR1, SB1, SB2, ..., SBn. The first to nth first IR signals IR1, SB1, SB2, ..., SBn have first to nth periods T1, T2, T3, ..., Tn, respectively. The first to nth periods T1, T2, T3, ..., Tn have first to nth signal parts SP1, SP2, SP3, ..., SPn and first to nth idle parts IP1, IP2, IP3, ..., IPn. The first period T1 has, for example, a first signal part SP1 of about 60 ms and an idle part IP1 of, for example, 70 ms, and the second to nth periods T2, T3, ..., Tn have second to nth signal parts SP2, SP3, ..., SPn of 30 ms and second to nth idle parts IP2, IP3, ..., IPn of 150 ms.

[0113] The first first IR signal IR1 is a signal having normal input key data, and the second to nth first IR signals SB1, . . . , SBn are short pulse signals having no input key data.

[0114] The second IR signal includes first to nth second IR signals MBR1, MBR2, ..., MBRn corresponding to the third to nth first IR signals SB2, ..., SBn of the first IR signal. The first to nth second IR signals MBR1, MBR2, ..., MBRn have first to nth periods T1', T2', ..., Tn', respectively. The first to nth periods T1', T2', ..., Tn' have first to nth signal parts SP1', SP2', ..., SPn' and first to nth idle parts IP1', IP2', ..., IPn'. The first to nth periods T1', T2', ..., Tn' have a time length of, for example, 180 ms.

[0115] Even if the third to nth first IR signals SB2, ..., SBn, i.e., short pulse signals without input key data, are received, the second processor 22 recognizes that the third to nth first IR signals SB2, ..., SBn are equivalent to the first first IR signal IR1 with input key data, and outputs the first to nth second IR signals MBR1, MBR2, ..., MBRn for controlling the STB 30. In other words, the first to nth second IR signals MBR1, MBR2, ..., MBRn are output within the third to nth idle portions IP3, ..., IPn of the first IR signal, and therefore do not interfere with the third to nth signal portions SP3, ..., SPn.

[0116] The second IR signal has a blank portion BK in which the second IR signal corresponding to the first first IR signal IR1 and the second first IR signal SB1 of the first IR signal is not generated. The first IR signal transmitted from the first wireless signal transmitter 13 of the universal remote controller 10 can be received not only in the display device 20 but also in the STB 30. The blank portion BK refers to a portion that takes into account the time taken for the external device (i.e., the STB 30) to receive and process the first first IR signal IR1 from the universal remote controller 10. In other words, when the first first IR signal IR1 is undesirably received, the STB 30 spends a predetermined period of time, for example, 280ms, in processing the first first IR signal IR1.

[0117] The STB 30 receives the short pulse signal (i.e., the third to nth first IR signals SB2, SB3, ..., SBn) and processes the short pulse signal as noise, and the display device 20 does not require a blank portion to pass before outputting the second to nth second IR signals MBR2, ..., MBRn. As a result, even when the cycles of the second to nth second IR signals MBR2, ..., MBRn are short, the second to nth second IR signals MBR2, ..., MBRn do not interfere with the third to nth first IR signals SB2, SB3, ..., SBn, thereby responding to the user more quickly.

[0118] Figure 7 FIG. 4 shows waveforms of a first IR signal output from a universal remote controller and a second IR signal output from a display device according to a second embodiment. Figure 4 In contrast to the first embodiment discussed, Figure 7 The first IR signal is shown which is output by delaying the second first IR signal SB1 which is a short pulse signal after the first first IR signal IR1 by up to 180 ms.

[0119] like Figure 7 As shown, the first IR signal includes first to nth first IR signals IR1, SB1, SB2, ..., SBn. The first to nth first IR signals IR1, SB1, SB2, ..., SBn have first to nth periods T1, T2, T3, ..., Tn. The first to nth periods T1, T2, T3, ..., Tn have first to nth signal parts SP1, SP2, SP3, ..., SPn and first to nth idle parts IP1, IP2, IP3, ..., IPn. The first period T1 may have, for example, a first signal part SP1 of about 60 ms and an idle part IP1 of, for example, 250 ms, and the second to nth periods T2, T3, ..., Tn have second to nth signal parts SP2~SPn of, for example, about 30 ms and second to nth idle parts IP2~IPn of, for example, 150 ms.

[0120] The first first IR signal IR1 is a signal having normal input key data, and the second to nth first IR signals SB1, ..., SBn are short pulse signals having no input key data. Here, the first first IR signal IR1 ensures a long first idle portion IP1 of about 250ms and delays the output of the second IR signal, thereby avoiding interference between the first first IR signal IR1 and the second IR signal.

[0121] like Figure 7 As shown, the second IR signal includes first to nth second IR signals MBR1, MBR2, ..., MBRn corresponding to the second to nth first IR signals SB1, SB2, ..., SBn of the first IR signal. The second IR signal has a blank portion BK, in which the second IR signal corresponding to the first first IR signal IR1 of the first IR signal is not generated. The blank portion BK refers to a portion for avoiding interference between the first first IR signal IR1 and the first second IR signal MBR1 in the STB 30.

[0122] As described above, the second embodiment eliminates the need for Figure 4In the first embodiment, the second first IR signal SB1 is ignored to ensure processing of the blank portion BK, and when the second first IR signal of the short pulse signal is received from the universal remote controller 10, the first second IR signal MBR1 is immediately output.

[0123] Figure 8 FIG. 4 shows waveforms of a first IR signal output from a universal remote controller and a second IR signal output from a display device according to a third embodiment. Figure 4 and Figure 7 In contrast to the embodiment discussed, only the first IR signal IR1 is a signal having input key data, while the other second to nth first IR signals SB1-SBn are short pulse signals having no input key data. Figure 8 The third embodiment shown shows that the first first IR signal IR1 and the second first IR signal IR2 are successively output as signals having input key data.

[0124] like Figure 8 As shown, the first IR signal includes first to nth first IR signals IR1, IR2, SB1, SB2, ..., SBn. The first to nth first IR signals IR1, IR2, SB1, SB2, ..., SBn have first to nth periods T1, T2, T3, T4, ..., Tn, respectively. The first to nth periods T1, T2, T3, T4, ..., Tn have first to nth signal parts SP1, SP2, SP3, SP4, ..., SPn and first to nth idle parts IP1, IP2, IP3, IP4, ..., IPn. The first period T1 has a first signal portion SP1 of, for example, approximately 60 ms and an idle portion IP1 of, for example, 48 ms, the second period T2 has a first signal portion SP2 of, for example, approximately 60 ms and an idle portion IP2 of, for example, 250 ms, and the third to nth periods T3, ..., Tn have third to nth signal portions SP3~SPn of, for example, approximately 30 ms and third to nth idle portions IP3~IPn of, for example, 150 ms.

[0125] The first first IR signal IR1 and the second first IR signal IR2 are signals with normal input key data, and the third to nth first IR signals SB1, ..., SBn are short pulse signals without input key data. Here, the second first IR signal IR2 ensures a longer first idle portion IP2 of about 250ms, thereby delaying the output of the second IR signal.

[0126] like Figure 8As shown, the second IR signal includes first to nth second IR signals MBR1, MBR2, ..., MBRn corresponding to the third to nth first IR signals SB1, SB2, ..., SBn of the first IR signal. The second IR signal has a blank portion BK, in which the second IR signal corresponding to the second first IR signal IR2 of the first IR signal is not generated. The blank portion BK refers to a portion for avoiding interference between the second first IR signal IR2 and the first second IR signal MBR1 in the STB 30.

[0127] As described above, even when the first IR signal IR1 is not normally transmitted according to the surrounding environment, the display device according to the third embodiment stably outputs the second IR signals MBR1~MBRn corresponding to the third to nth first IR signals SB1,...,SBn with reference to the second first IR signal IR2, thereby improving reliability.

[0128] Fig. 9 The waveforms of the first IR signal output from the universal remote controller and the second IR signal output from the display device according to the fourth embodiment are shown. In the fourth embodiment, the first second IR signal MBR1 and the second to nth second IR signals MBR2'-MBRn' are set differently from the first to third embodiments. In this case, the second to nth second IR signals MBR2'-MBRn' do not have input key data, but are recognized as being equivalent to the first second IR signal MBR1 in the STB 30.

[0129] like Fig. 9 As shown, the first IR signal includes first to nth first IR signals IR1, SB1, SB2, SB3, ..., SBn. The first to nth first IR signals IR1, SB1, SB2, SB3, ..., SBn have first to nth periods T1, T2, T3, T4, ..., Tn, respectively. The first to nth periods T1, T2, T3, T4, ..., Tn have first to nth signal parts SP1, SP2, SP3, SP4, ..., SPn and first to nth idle parts IP1, IP2, IP3, IP4, ..., IPn. The first period T1 has a first signal portion SP1 of, for example, approximately 60 ms and an idle portion IP1 of, for example, 250 ms, the second period T2 has a first signal portion SP2 of, for example, approximately 30 ms and an idle portion IP2 of, for example, 150 ms, and the third to nth periods T3, ..., Tn have third to nth signal portions SP3~SPn of, for example, approximately 30 ms and third to nth idle portions IP3~IPn of, for example, 135 ms.

[0130] The first first IR signal IR1 is a signal with normal input key data, and the second to nth first IR signals SB1-SBn are short pulse signals without input key data. Here, the first first IR signal IR1 ensures a long first idle portion IP1 of about 250ms to delay the output of the second IR signal, thereby avoiding interference.

[0131] like Fig. 9 As shown, the second IR signal includes first to nth second IR signals MBR1, MBR2', MBR3', ..., MBRn' corresponding to the second to nth first IR signals SB1~SBn of the first IR signal. The first to nth second IR signals MBR1, MBR2', MBR3', ..., MBRn' have first to nth periods T1', T2', T3', ..., Tn', respectively. The first to nth periods T1', T2', T3', ..., Tn' have first to nth signal parts SP1', SP2', SP3', ..., SPn' and first to nth idle parts IP1', IP2', IP3', ..., IPn'. The first period T1' has a first signal portion SP1' of, for example, approximately 60 ms and an idle portion IP1' of, for example, 120 ms, and the second to nth periods T2', ..., Tn' have second to nth signal portions SP2'~SPn' of, for example, approximately 45 ms and second to nth idle portions IP2'~IPn' of, for example, 120 ms.

[0132] The first first IR signal IR1 is a signal having normal input key data, and the second to nth first IR signals SB1-SBn are short pulse signals having no input key data. The STB 30 recognizes the second to nth first IR signals SB1-SBn as noise.

[0133] The first second IR signal MBR1 is a signal having normal input key data, and the second to nth second IR signals MBR2'-MBRn' are short pulse signals having no input key data. The STB 30 may be pre-set to recognize that the second to nth second IR signals MBR2'-MBRn' are equivalent to the first second IR signal MBR1 when the second to nth second IR signals MBR2'-MBRn' are received. In addition, the second IR signal has a blank portion BK, in which the second IR signal corresponding to the first first IR signal IR1 of the first IR signal is not generated. The blank portion BK is a portion for avoiding interference between the first first IR signal IR1 and the first second IR signal MBR1.

[0134] As described above, according to the fourth embodiment, the second to nth second IR signals MBR2'MBRn' have a shorter period than the first second IR signal MBR1, thereby providing a control response to the user more quickly without interference.

[0135] Fig.10 The waveforms of the first IR signal output from the universal remote controller and the second IR signal output from the display device according to the fifth embodiment are shown. In contrast to the embodiments discussed above, the fifth embodiment shows that both the first and second IR signals include signals having input key data. In this case, the periods of the first and second IR signals are adjusted to avoid interference with each other.

[0136] like Fig.10 As shown, the first IR signal includes first to nth first IR signals IR1, IR2, IR3, ..., IRn. The first to nth first IR signals IR1, IR2, IR3, ..., IRn have first to nth periods T1, T2, T3, ..., Tn, respectively. The first to nth periods T1, T2, T3, ..., Tn have first to nth signal parts SP1, SP2, SP3, ..., SPn and first to nth idle parts IP1, IP2, IP3, ..., IPn. The first to nth periods T1, ..., Tn have first to nth signal parts SP1~SPn of, for example, about 60 ms and first to nth idle parts IP1~IPn of, for example, 340 ms.

[0137] The first to nth first IR signals IR1, IR2, IR3, ..., IRn are signals with normal input key data. Here, each of the first to nth first IR signals IR1, IR2, IR3, ..., IRn ensures a long first idle portion IP1-IPn of about 340ms to delay the output of the second IR signal, thereby avoiding interference.

[0138] like Fig.10As shown, the second IR signal includes first to nth second IR signals MBR1, MBR2, MBR3, ..., MBRn corresponding to first to nth first IR signals IR1, IR2, IR3, ..., IRn. The first to nth second IR signals MBR1, MBR2, MBR3, ..., MBRn have first to nth periods T1', T2', T3', ..., Tn', respectively. The first to nth periods T1', T2', T3', ..., Tn' have first to nth signal parts SP1', SP2', SP3', ..., SPn' and first to nth idle parts IP1', IP2', IP3', ..., IPn'. The first to nth periods T1', ..., Tn' have first to nth signal parts SP1'~SPn' of, for example, about 60 ms and first to nth idle parts IP1'~IPn' of, for example, 340 ms.

[0139] The first to nth second IR signals MBR1, MBR2, MBR3, ..., MBRn include first to nth idle parts IP1'~IPn' of 340ms respectively, and thus ensure a blank part of, for example, 280ms. The blank part refers to a part for avoiding interference between the first to nth first IR signals IR1, IR2, IR3, ..., IRn and the first to nth second IR signals MBR1, MBR2, MBR3, ..., MBRn by ensuring the time spent by the STB 30 in receiving and processing the first to nth first IR signals IR1, IR2, IR3, ..., IRn.

[0140] As described above, the fifth embodiment prevents interference between the first IR signal and the second IR signal by extending the cycles of both the first IR signal and the second IR signal.

[0141] Fig.11 Waveforms of a first IR signal output from a universal remote controller and a second IR signal output from a display device according to a sixth embodiment are shown. According to the sixth embodiment, odd-numbered first IR signals IR1, IR2, ..., IRn having input key data and even-numbered first IR signals SB1, SB2, ..., SBn having no input key data as short pulse signals are alternately output, and the second IR signal is output corresponding to the even-numbered first IR signals SB1, SB2, ..., SBn.

[0142] like Fig.11As shown, the first IR signal includes the first to nth first IR signals IR1, SB1, IR2, SB2, IR3, ..., SBn. The first to nth first IR signals IR1, SB1, IR2, SB2, IR3, ..., SBn respectively have the first to nth periods T1, T2, T3, T4, T5, ..., Tn. The first to nth periods T1~Tn have the first to nth signal parts SP1~SPn and the first to nth idle parts IP1~IPn. The first, third and fifth periods T1, T3 and T5 respectively have the first, third and fifth signal parts SP1, SP3 and SP5 of, for example, about 60ms and the first, third and fifth idle parts IP1, IP3 and IP5 of, for example, 250ms. The second and fourth periods T2 and T4 respectively have the second and fourth signal parts SP2 and SP4 of, for example, about 30ms and the second and fourth idle parts IP2 and IP4 of, for example, 150ms.

[0143] As described above, the odd-numbered first IR signals IR1, IR3, IR5, ... are signals with normal input key data. The even-numbered first IR signals IR2, IR4, ... are short pulse signals without input key data. Here, each odd-numbered first IR signal IR1, IR3, IR5, ... ensures a longer idle portion IP1, IP3, IP5, ... of about 240ms to delay the output of the second IR signal, thereby avoiding interference.

[0144] like Fig.11 As shown, the second IR signal includes first to nth second IR signals MBR1, MBR2, ..., MBRn corresponding to the odd-numbered first IR signals IR1, IR3, IR5, ... The first to nth second IR signals MBR1, MBR2, ..., MBRn include first to nth idle parts IP1'~IPn' that are long enough to ensure a blank part of, for example, 280ms. The blank part refers to a part that avoids interference between the odd-numbered first IR signals IR1, IR3, IR5... and the first to nth second IR signals MBR1, MBR2, ..., MBRn by ensuring the time spent by the STB 30 in receiving and processing the odd-numbered first IR signals IR1, IR3, IR5...

[0145] As described above, according to the sixth embodiment, odd-numbered first IR signals IR1, IR2, ... having input key data are given alternately, so that even when some first IR signals having input key data are not sent normally according to the surrounding environment, the second IR signals MBR1~MBRn can be stably output with reference to other first IR signals, thereby improving reliability.

[0146] According to the present disclosure, a first IR signal sent from a universal remote controller to an electronic device to control an external device and a second IR signal sent from the electronic device receiving the first IR signal to control the external device are controlled not to interfere with each other, thereby having the effect of preventing abnormal operation.

[0147] Although certain embodiments have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electronic device, comprising: A signal receiver configured to receive a first wireless signal from outside, wherein the first wireless signal includes a first signal portion and a plurality of second signal portions repeatedly received after the first signal portion, each of the plurality of second signal portions being shorter than the first signal portion; A signal transmitter configured to output a second wireless signal; as well as a processor configured to: identify an external device to be operated according to the input key based on the first signal portion of the first wireless signal received by the signal receiver corresponding to the input key, and control the signal transmitter to repeatedly output the second wireless signal based on the plurality of second signal portions of the first wireless signal repeatedly received by the signal receiver, so that the identified external device receives the second wireless signal and operates according to the input key, The first wireless signal further includes a plurality of idle parts alternating with the plurality of second signal parts based on a given period, wherein the processor controls the signal transmitter to output a signal portion of the second wireless signal in the idle portion of the first wireless signal, and The first signal portion includes input key data indicating the input key, and the plurality of second signal portions do not include the input key data.

2. The electronic device according to claim 1, wherein: Each of the plurality of second signal portions of the first wireless signal is recognized as noise by the external device.

3. The electronic device according to claim 1, wherein: The first wireless signal also includes a third signal portion, and Each of the plurality of second signal portions is shorter than the third signal portion.

4. The electronic device according to claim 3, wherein: The third signal portion includes the input key data.

5. The electronic device according to claim 1, wherein: The signal portion of the second wireless signal includes a fourth signal portion and a fifth signal portion that is shorter than the fourth signal portion.

6. The electronic device according to claim 5, wherein: The signal in the fourth signal portion includes input key data identifying the input key, and The signal in the fifth signal portion does not include input key data and is recognized by the external device as being equivalent to the signal in the fourth signal portion.

7. The electronic device according to claim 1, wherein: The processor performs an operation based on the input key indicated by the first wireless signal in a first mode, and controls output of the second wireless signal to be recognized by the external device based on the first wireless signal in a second mode.

8. The electronic device according to claim 7, wherein: The processor controls output of the second wireless signal having a longer period than the first wireless signal based on the first wireless signal in the second mode.

9. The electronic device according to claim 1, wherein: The second wireless signal includes a blank portion in which the second wireless signal corresponding to the first signal portion of the first wireless signal is not generated.

10. A method for controlling an electronic device, comprising: receiving a first wireless signal from outside, the first wireless signal comprising a first signal portion and a plurality of second signal portions repeatedly received after the first signal portion, each of the plurality of second signal portions being shorter than the first signal portion; identifying an external device to be operated according to the input key based on the first signal portion of the first wireless signal corresponding to the input key; as well as Based on the repeated reception of the plurality of second signal parts of the first wireless signal, repeatedly outputting a second wireless signal so that the identified external device receives the second wireless signal and operates according to the input key, The first wireless signal further includes a plurality of idle parts alternating with the plurality of second signal parts based on a given period, wherein a signal portion of the second wireless signal is output in the idle portion of the first wireless signal, and The first signal portion includes input key data indicating the input key, and the plurality of second signal portions do not include the input key data.

11. A display device, comprising: a display configured to display an image; A signal receiver configured to receive a first wireless signal from outside, wherein the first wireless signal includes a first signal portion and a plurality of second signal portions repeatedly received after the first signal portion, each of the plurality of second signal portions being shorter than the first signal portion; A signal transmitter configured to output a second wireless signal; as well as a processor configured to: identify an external device to be operated according to the input key based on the first signal portion of the first wireless signal received by the signal receiver corresponding to the input key, and control the signal transmitter to repeatedly output the second wireless signal based on the plurality of second signal portions of the first wireless signal repeatedly received by the signal receiver, so that the identified external device receives the second wireless signal and operates according to the input key, The first wireless signal further includes a plurality of idle parts alternating with the plurality of second signal parts based on a given period, wherein the processor controls the signal transmitter to output a signal portion of the second wireless signal in the idle portion of the first wireless signal, and The first signal portion includes input key data indicating the input key, and the plurality of second signal portions do not include the input key data.

12. An electronic system comprising: The electronic device according to any one of claims 1 to 9; as well as A remote controller for controlling the electronic device, the remote controller comprising: A key-input receiver configured to receive key input; a signal transmitter, configured to output the first wireless signal; and a processor, configured to control the signal transmitter to output the first wireless signal, Wherein, based on the continuous reception of the same key input as the signal part of the first wireless signal, the processor controls the signal transmitter to output a wireless signal that does not include the input key data.

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