Patent Description:
The disclosure relates to a display apparatus and a method of controlling the same, and more specifically, to a display apparatus connected to an audio apparatus in a wired or wireless manner, and a method of controlling the same.

In general, a display apparatus is an output device that visually displays image information received from an external device or stored inside in the display apparatus to a user, and is used in various fields, such as homes and businesses.

In order to assist audio output, the display apparatus may be connected to an audio apparatus in a wired or wireless manner. For example, the display apparatus may transmit an electrical audio signal (or audio data) to the audio apparatus, and the audio apparatus may output sound according to the audio signal received from the display apparatus.

Recent audio apparatuses have a compact size unlike the conventional audio apparatuses. For example, in the audio apparatuses, an input button and a display are minimized and a speaker for outputting sound occupies most area of a main body.

In addition, the interaction between the audio apparatus and the user has been weakened. For example, recent audio apparatuses may represent the operation of the audio apparatus only with a light emitting diode (LED).

With such a configuration, the user may not accurately recognize the operating state of the audio apparatus.

<CIT> discloses a content output apparatus, methods for controlling a content apparatus, and a mobile apparatus. The content output apparatus includes a receiver configured to receive content, a display configured to output a video signal of the content, a speaker configured to output an audio signal of the content, a communicator configured to transmit the audio signal to at least one external speaker, and a controller configured to determine whether the audio signal is related to the video signal, and display a user interface screen for inducing a selection of an output mode which transmits the audio signal to the at least one external speaker with a communication method corresponding to the determination result among a plurality of output modes via the display.

<CIT> discloses an electronic device including a communicator including communication circuitry configured to perform wireless communication with a peripheral device and to receive information indicating at least one audio connection protocol for connecting the peripheral device to the electronic device; a processor; a memory; and one or more programs comprising instructions, stored in the memory, which, when executed by the processor, cause the processor to perform operations corresponding to the instructions, the one or more programs including instructions for selecting one of the at least one audio connection protocol based on pre-set priorities of the audio connection protocols; and instructions for outputting an audio signal to the peripheral device based on the selected audio connection protocol.

Therefore, it is an object of the disclosure to provide a display apparatus capable of displaying information about an operation of an audio apparatus connected thereto, and a method of controlling the same.

It is another object of the disclosure to provide a display apparatus capable of displaying information about an operation of an audio apparatus when an audio apparatus is solely in operation, and a method of controlling the same.

It is another object of the disclosure to provide a display apparatus capable of minimizing power consumption for displaying information about an operation of an audio apparatus and a method of controlling the same.

According to an aspect of the invention, there is provided an electronic component as set out in claim <NUM>. Preferred features of this aspect are set out in claims <NUM> to <NUM>.

These and/or other aspects and advantages will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:.

Accordingly, descriptions of well-known functions and constructions may be omitted for increased clarity and conciseness.

Additionally, exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings. The exemplary embodiments may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete and will fully convey the exemplary embodiments to those of ordinary skill in the art. Like numerals denote like elements throughout.

It will be understood that when an element is referred to as being "connected," or "coupled," to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected," or "directly coupled," to another element, there are no intervening elements present.

Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

The expression, "at least one of a, b, and c," should be understood as including 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.

<FIG> illustrates a display apparatus and an audio apparatus connected to the display apparatus according to an embodiment.

Referring to <FIG>, a display apparatus <NUM> may be connected to an audio apparatus <NUM> in a wired/wireless manner, and may output sound through the audio apparatus <NUM>.

The display apparatus <NUM> is a device capable of processing video data received from the outside and/or video data stored in the display apparatus <NUM>, and visually displaying the processed video (a series of a plurality of images). In the following description, the display apparatus <NUM> is illustrated as a television (TV), but the disclosure is not limited thereto. For example, the display apparatus <NUM> may be implemented in various forms, such as a monitor, a portable multimedia device, a portable communication device, and a portable computing device without limitation of the name and forms as long as it can visually display an image.

In addition, the display apparatus <NUM> may be a large display device (Large Format Display, LFD) installed outdoors, such as a rooftop of a building or a bus stop. Here, the outdoors are not limited to an open-air place, and may include a place where a large number of people enter or exist, even inside of a building, such as subway stations, shopping malls, cinemas, companies, shops, and the like, in which the display apparatus <NUM> according to the embodiment may be installed.

The display apparatus <NUM> may receive video data and audio data from various content sources. For example, the display apparatus <NUM> may receive video/audio data (television broadcast content) through a broadcast reception antenna or a wired cable, receive video/audio data from a content playback device, or receive video/audio data from a content providing server of a content provider.

The display apparatus <NUM> may display an image corresponding to video data and output sound corresponding to audio data. For example, the display apparatus <NUM> may reconstruct a plurality of images included in video data and continuously display the plurality of images. In addition, the display apparatus <NUM> may reconstruct an audio signal included in the audio data and continuously output sound according to the audio signal.

Referring to <FIG>, the display apparatus <NUM> includes a main body <NUM> that accommodates a plurality of parts for displaying an image, and a screen S provided at one side of the main body <NUM> to display an image I.

The main body <NUM> may form the external appearance of the display apparatus <NUM>, and accommodate parts required for the display apparatus <NUM> to display an image I.

The screen S is formed on the front surface of the main body <NUM>, and the image I, which is visual information, may be displayed on the screen S.

The screen S includes a plurality of pixels P, and the image I displayed on the screen S may be formed by a combination of light emitted from the plurality of pixels P. For example, the light emitted by the plurality of pixels P may be combined as a mosaic to form a single image I on the screen S.

The respective pixels P may emit light of various brightness and various colors.

In order to emit light of various brightness, each of the plurality of pixels P may directly emit light (a self-emissive display panel) or may transmit or block light emitted by a backlight unit or the like (a non-emissive display panel). For example, the display apparatus <NUM> may include a liquid crystal display panel (LCD Panel), a light emitting diode panel (LED panel), an organic light emitting diode panel (OLED panel), or a quantum dot (QD) display panel.

In order to display images of various colors, each of the plurality of pixels P may include sub-pixels Psub1, Psub2, and Psub3. For example, the sub-pixels may include a red sub-pixel that may emit red light, a green sub-pixel that may emit green light, and a blue sub-pixel that may emit blue light (an RGB pixel). For example, the sub-pixels may include a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel that may emit white light (an RGBW pixel). For example, the sub-pixels may include a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a yellow sub-pixel that may emit yellow light (an RGBY pixel). However, the sub-pixel structure is not limited to the above, and may include various sub-pixel structures currently disclosed or to be disclosed later.

The display apparatus <NUM> may directly output sound according to audio data, or may transmit audio data to the audio apparatus <NUM> such that the audio apparatus <NUM> outputs sound according to the audio data.

The audio apparatus <NUM> is a device capable of processing audio data received from outside and/or audio data stored therein, and audibly outputting the processed sound. The name and form of the audio apparatus <NUM> are not limited as long as it can audibly output audio. For example, the audio apparatus <NUM> may be referred to as a "speaker", a "sound bar", a "bluetooth speaker", a "WiFi speaker," or an "artificial intelligence speaker".

The audio apparatus <NUM> may receive audio data from various content sources. For example, the audio apparatus <NUM> may receive audio data (radio broadcast) through a broadcast reception antenna, receive audio data from an audio playback device, or receive audio data from an audio providing server.

The audio apparatus <NUM> may reconstruct an audio signal included in the audio data, and continuously output sound according to the audio signal.

Referring to <FIG>, the audio apparatus <NUM> may include a main body <NUM> accommodating a plurality of components for outputting sound, and a speaker provided at one side of the main body <NUM> to output sound.

The audio apparatus <NUM> may include one speaker or a plurality of speakers to output sound of various frequency bands. For example, the audio apparatus <NUM> may include a tweeter capable of outputting high-frequency sound, a mid-range speaker capable of outputting a medium-frequency sound, or a woofer capable of outputting a low-frequency sound.

The audio apparatus <NUM> may transmit operation information of the audio apparatus <NUM> to the display apparatus <NUM> to display an operating state of the audio apparatus <NUM>. The audio apparatus <NUM> may omit a display panel for displaying an image in order to ensure a compact appearance, and may include a light emitting diode (LED) for providing only minimal information about the operation of the audio apparatus <NUM>.

As such, the audio apparatus <NUM> may transmit operation information of the audio apparatus <NUM> to provide a user with detailed information about the operation of the audio apparatus <NUM>.

Hereinafter, the configuration and operation of the display apparatus <NUM> and the audio apparatus <NUM> will be described in detail.

<FIG> illustrates a configuration of the display apparatus according to the embodiment. <FIG> illustrates an example of a display included in the display apparatus according to the embodiment. <FIG> illustrates an example of a display included in the display apparatus according to the embodiment.

Referring to <FIG>, <FIG>, and <FIG>, the display apparatus <NUM> includes a user inputter <NUM> to receive a user input from a user, a content interface <NUM> to receive video data and/or audio data from content sources, a speaker <NUM> to output sound, a display <NUM> to display an image, a communication interface <NUM> to transmit and receive data including video/audio data to and from external devices, a storage <NUM> to store programs and data for controlling the operation of the display apparatus <NUM>, and a controller <NUM> to process video data and/or audio data and control the operation of the display apparatus <NUM>.

The user inputter <NUM> may include an input button <NUM> for receiving a user input. For example, the user inputter <NUM> may include a power button for turning on or off the display apparatus <NUM>, a volume control button for adjusting audio volume, a source selection button for selecting a content source, and the like.

Each of the input buttons <NUM> may receive a user input and may output an electrical signal (voltage or current) corresponding to the user input to the controller <NUM>, and may be implemented as various input devices, such as a push switch, a touch switch, a dial, a slide switch, a toggle switch, etc..

The user inputter <NUM> includes a signal receiver <NUM> for receiving a remote control signal of a remote control 112a. The remote control 112a for acquiring a user input may be provided separately from the display apparatus <NUM>. The remote control 112a may acquire a user input and transmit a wireless signal (e.g., an infrared signal) corresponding to the user input to the display apparatus <NUM>. The signal receiver <NUM> may receive the wireless signal (e.g., an infrared signal) from the remote control 112a and output an electrical signal (voltage or current) corresponding to the user input to the controller <NUM>.

The content interface <NUM> may receive video/audio data from a content source, or transmit and receive video/audio data to and from a peripheral device (e.g., an audio apparatus).

The content interface <NUM> may include a transmission/reception terminal <NUM>. The transmission/reception terminal may include a component YPbPr/RGB terminal, a composite video blanking and sync (CVBS)) terminal, an audio terminal, and the like. In addition, the transmission/reception terminal <NUM> may include a high definition multimedia interface (HDMI) terminal capable of transmitting and receiving video/audio data to and from peripheral devices (e.g. an audio apparatus), a universal serial bus (USB) terminal, and the like.

The content interface <NUM> may include a tuner <NUM>. The tuner <NUM> may receive broadcast signals from a broadcast reception antenna or a wired cable and extract a broadcast signal of a channel selected by a user from the broadcast signals. For example, the tuner <NUM> may pass a broadcast signal having a frequency corresponding to a channel selected by a user among a plurality of broadcast signals received through a broadcast reception antenna or a wired cable, and block broadcast signals having other frequencies.

As such, the display apparatus <NUM> may receive video/audio data from content sources through the content interface <NUM>. In addition, the display apparatus <NUM> may exchange data with the audio apparatus <NUM> through the content interface <NUM>.

The speaker <NUM> may audibly output an audio signal. The speaker <NUM> may convert an audio signal output from the controller <NUM> into sound. For example, the speaker <NUM> may include a thin film that vibrates according to an audio signal, and sound may be generated by the vibration of the thin film.

The speaker <NUM> may include a left surround speaker disposed on the left side of the display apparatus <NUM> and a right surround speaker disposed on the right side of the display apparatus <NUM> in order to output stereo sound.

The display <NUM> includes a display panel <NUM> that visually displays an image and a display driver <NUM> that drives the display panel <NUM>.

As described above, the display apparatus <NUM> may reconstruct a plurality of images included in video data, and may continuously display the plurality of images.

The display driver <NUM> may transmit to the display panel <NUM> an analog signal (a driving signal) for displaying each of the reconstructed plurality of images on the display panel <NUM>.

The display driver <NUM> may transmit a driving signal to each of the plurality of pixels included in the display panel <NUM>. Each of the plurality of pixels of the display panel <NUM> may emit light according to the driving signal, and light emitted from the plurality of pixels may be combined to form a single image.

The display panel <NUM> may emit light according to the driving signal received from the display driver <NUM>, and display an image.

The display panel <NUM> may include pixels each serving as a unit for displaying an image. Each pixel may receive a driving signal for displaying an image from the display driver <NUM> and may output an optical signal corresponding to the received driving signal. In this way, the optical signals output from the plurality of pixels P are combined so that one image may be displayed on the display panel <NUM>.

The display apparatus <NUM> may include various types of display panels <NUM> for displaying images.

For example, the display apparatus <NUM> may include a non-emissive display panel that displays an image by passing or blocking light emitted from a light source (a backlight unit). A liquid crystal display panel is a typical non-emissive display panel.

Referring to <FIG>, the display panel <NUM> may include a liquid crystal panel 152a and a backlight unit 152b. The backlight unit 152b may include a plurality of light sources capable of emitting white light including red light, green light, and blue light. The liquid crystal panel 152a may selectively pass red light, green light, and blue light emitted from the backlight unit 152b. For example, a red sub-pixel of the liquid crystal panel 152a may selectively pass red light and block green light and blue light. A green sub-pixel of the liquid crystal panel 152a may selectively pass green light and block blue light and red light. A blue sub-pixel of the liquid crystal panel 152a may selectively pass blue light and may block red light and green light.

The display driver <NUM> may include a liquid crystal panel driver 151a for driving the liquid crystal panel 152a and a dimming driver 151b for driving the backlight unit 152b. The liquid crystal panel driver 151a may output a driving signal for forming an image to the liquid crystal panel 152a. The intensity (or amount of light) of light passing through each of the plurality of sub-pixels of the liquid crystal panel 152a is adjusted by the driving signal of the liquid crystal panel driver 151a, and an image is formed by the light passing through each of the plurality of sub-pixels. The dimming driver 151b may output a dimming signal for locally adjusting the brightness of the backlight unit 152b to the backlight unit 152b. The intensity (or amount of light) of light emitted from the backlight unit 152b is locally adjusted by the dimming signal, so that the contrast ratio of the image displayed on the liquid crystal panel 152a may be improved.

The dimming driver 151b and the liquid crystal panel driver 151a may operate the display panel <NUM>. For example, the dimming driver 151b and the liquid crystal panel driver 151a may drive the display panel <NUM> to display an image on a portion of the display panel <NUM>. The dimming driver 151b may drive some of light sources included in the backlight unit 152b to locally emit light, and the liquid crystal panel driver 151a may drive the liquid crystal panel 152a to pass light locally.

As another example, the display apparatus <NUM> may include a self-emissive display panel that displays an image using a device that emits light by itself. An OLED panel or a QD display panel is a typical self-emissive display panel.

Referring to <FIG>, the display panel <NUM> includes a light emitting diode (LED) panel 152c. The LED panel 152c may include a red LED capable of emitting red light, a green LED capable of emitting green light, and a blue LED capable of emitting blue light. Each of the LEDs may function as a sub-pixel. The red, green, and blue LEDs may function as a red sub-pixel, a green sub-pixel, and a blue sub-pixel, respectively. The QD display panel may include red, green, and blue quantum dots, and each of the quantum dots may function as a sub-pixel.

The display driver <NUM> includes a LED driver 151c. The LED driver 151c may output a driving signal for forming an image to the LED panel 152c. By the driving signal of the LED panel 152c, driving current is supplied to the red, green, and blue LEDs, and the intensity of light (or amount of light) emitted from each of the red, green, and blue LEDs Is adjusted. An image may be formed by light emitted from the LEDs.

The LED driver 151c may locally operate the display panel <NUM>. For example, the LED driver 151c may drive the display panel <NUM> to display an image on a portion of the display panel <NUM>. The LED driver 151c may supply driving current only to some light emitting diodes in a portion generating an image.

As such, the display panel <NUM> may be locally operated according to a driving signal from the display driver <NUM>. In other words, an image may be displayed on a part of the display panel <NUM>.

The communication interface <NUM> may receive video/audio data from a content source.

The communication interface <NUM> may include a wired communication module <NUM> for receiving video/audio data from a content source in a wired manner, and a wireless communication module <NUM> for receiving video/audio data from a content source in a wireless manner.

The wired communication module <NUM> may receive a data stream from a content source using various communication standards. For example, the wired communication module <NUM> may receive video/audio data from a content source using Ethernet (Ethernet, IEEE <NUM> technology standard).

The wired communication module <NUM> may include a communication circuit (e.g., a network interface controller) including a processor and/or memory that modulates/modulates data for wired communication.

The wireless communication module <NUM> may exchange wireless signals with the audio apparatus <NUM> using various types of wireless communications. In addition, the wireless communication module <NUM> may receive a data stream from a content source via the audio apparatus <NUM>.

For example, the wireless communication module <NUM> may access a wireless repeater using Wi-Fi (WiFi™, IEEE <NUM> technology standard) wireless communication, and receive video/audio data from a content source via the wireless repeater.

The Wi-Fi wireless communication may provide peer-to-peer communication between nodes (e.g., between a display apparatus and an audio apparatus) without passing through a wireless repeater. Such a direct communication using Wi-Fi wireless communication is referred to as "WiFi P2P" or "WiFi direct". The wireless communication module <NUM> may exchange data with the audio apparatus <NUM> using Wi-Fi P2P communication standards.

In addition, the wireless communication module <NUM> may exchange data with the audio apparatus <NUM> using Bluetooth (Bluetooth™, IEEE <NUM>. <NUM> technology standard) or ZigBee (ZigBee™, IEEE <NUM>. <NUM> technology standard) wireless communication. Alternatively, the wireless communication module <NUM> may exchange data with the audio apparatus <NUM> using near field communication (NFC).

The wireless communication module <NUM> may include a communication circuit (e.g., a wireless network interface controller) including a processor and/or memory that decodes/encodes data for wireless communication with an antenna that transmits and receives wireless signals.

As such, the display apparatus <NUM> may exchange data with the audio apparatus <NUM> through the communication interface <NUM>.

The storage <NUM> includes a storage medium <NUM> that stores programs and data for controlling the operation of the display apparatus <NUM>. In addition, the storage <NUM> may include a management circuit including a processor and/or a memory for managing data stored in the storage medium <NUM>.

For example, the storage medium <NUM> may store an operation system (OS) that manages resources (e.g., software and/or hardware of the display apparatus <NUM>) included in the display apparatus <NUM>, a video player for decoding video data/audio data and reconstructing an image, a management application for managing the display apparatus <NUM>, and the like.

The storage medium <NUM> may store video data/audio data displayed by the display apparatus <NUM>. For example, the storage medium <NUM> may store an image file acquired by compressing/encoding video data/audio data.

The storage medium <NUM> may include a nonvolatile memory to retain stored programs and data even when power is cut off. For example, the storage medium <NUM> may include a flash memory, a solid state drive (SSD), a magnetic disk drive (a hard disc drive), or an optical disc drive.

The controller <NUM> may include a processor <NUM> for processing video/audio data, and a memory <NUM> for memorizing/storing programs and data for processing video/audio data. Further, the controller <NUM> may include hardware, such as the processor <NUM> and the memory <NUM>, as well as software, such as an operating system (OS), a video player, and an audio player.

The memory <NUM> may store programs and data for processing video/audio data, and may temporarily store temporary data generated while the video/audio data is being processed.

The memory <NUM> may include non-volatile memories for storing data for a long period of time, such as Read Only Memory (ROM) and flash memory, and volatile memories for temporarily storing data, such as a Static Random Access Memory (S-RAM), a dynamic random access memory (D-RAM), and the like.

The memory <NUM> may include one memory chip including a plurality of memory cores, or may include a plurality of memory chips.

The processor <NUM> may decode video/audio data received through the content interface <NUM> and/or the communication interface <NUM> to reconstruct a plurality of images and audio signals from the video/audio data. The plurality of images may be displayed on the display <NUM>. Sound according to the audio signal may be output through the speaker <NUM>. The processor <NUM> may transmit the audio signal to the audio apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM> so that sound according to the audio signal is output through the audio apparatus <NUM>.

The processor <NUM> may include one processor chip including a plurality of cores, or may include a plurality of processor chips. For example, the processor <NUM> may include an image processor that processes video/audio data, a micro controller that processes a user's touch input and controls an operation of the display apparatus <NUM>, and the like. In addition, the processor <NUM> may be provided separately from the memory <NUM> or may be provided integrally with the memory <NUM>.

With regard to power, the display apparatus <NUM> may be set into three states, and the processor <NUM> may perform different operations depending on the power state of the display apparatus <NUM>.

The display apparatus <NUM> may be set into an "off state" in which a plug of the display apparatus <NUM> is not inserted into a power socket. In the "off state", no power is supplied to the display apparatus <NUM>, and the processor <NUM> may not perform any operation.

The display apparatus <NUM> may be set into a "standby state" in which a plug of the display apparatus <NUM> is inserted into a power socket and a power supply command (or an operation command) from a user is not input.

In the "standby state", power may be supplied to some of the components included in the display apparatus <NUM>. In other words, some components of the display apparatus <NUM> may be activated in the "standby state". For example, in the "standby state", power may not be supplied to the display <NUM> and the speaker <NUM>.

On the other hand, in the "standby state", power may be supplied to the user inputter <NUM> to receive a power supply command from the user. In the "standby state", power may be supplied to the content interface <NUM> and/or the communication interface <NUM> to receive video/audio data.

Power may be supplied to parts of the processor <NUM> to process user input and/or video/audio data. For example, power may not be supplied to an image processor that processes video/audio data, but may be supplied to a microcomputer that generates a control signal for controlling the display apparatus <NUM>. As another example, power may not be supplied to a part of the processor <NUM> that processes video/audio data, but may be supplied to a part that generates a control signal for controlling the display apparatus <NUM>.

In addition, the processor <NUM>, in the standby state of the display apparatus <NUM>, may receive operation information of the audio apparatus <NUM> from the audio apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>, and control the display <NUM> to display the received operation information of the audio apparatus <NUM>. For example, in the "standby state", the microcomputer of the processor <NUM> may acquire operation information of the audio apparatus <NUM> and control the display <NUM> to display an image corresponding to the operation information of the audio apparatus <NUM>. As another example, in the "standby state", some area of the processor <NUM> may acquire operation information of the audio apparatus <NUM> and control the display <NUM> to display an image corresponding to the operation information of the audio apparatus <NUM>.

The display apparatus <NUM> may be set into an "on state" in which a plug of the display apparatus <NUM> is inserted into a power socket and a power supply command (or an operation command) of a user is input. In the "on state", power may be supplied to all of the components included in the display apparatus <NUM>. In the "on state", power may be supplied not only to the user inputter <NUM> and the processor <NUM> but also to the display <NUM> and the speaker <NUM>. In the "on state", the processor <NUM> may reconstruct a plurality of images from video data, and the display <NUM> may display the plurality of images.

The controller <NUM> including the processor <NUM> and the memory <NUM> may perform various operations to be described below.

<FIG> illustrates a configuration of the audio apparatus according to the embodiment.

Referring to <FIG>, the audio apparatus <NUM> includes a user inputter <NUM> to receive a user input from a user, a content interface <NUM> to receive audio data from content sources, a speaker <NUM> to output audio, a display <NUM> to display the operation of the audio apparatus <NUM>, a communication interface <NUM> to transmit and receive data to and from external devices, a storage <NUM> to store programs and data for controlling the operation of the audio apparatus <NUM>, and a controller <NUM> to process audio data and control the operation of the audio apparatus <NUM>.

The user inputter <NUM> may receive a user input from a user and transmit an electrical signal corresponding to the user input to the controller <NUM>. The user inputter <NUM> may include an input button <NUM> and a signal receiver <NUM>, and may have the same configuration as that of the user inputter <NUM> of the display apparatus <NUM>.

The content interface <NUM> may include a transmission/reception terminal <NUM>. The transmission/reception terminal <NUM> may receive audio data from a content source or may transmit/receive audio data to and from a peripheral device (e.g., a display apparatus). The transmission/reception terminal <NUM> may include a HDMI terminal.

The speaker <NUM> may audibly output an audio signal.

The speaker <NUM> may include a plurality of speakers. For example, in order to output surround sound, the speaker <NUM> may include a left surround speaker disposed on the left side of the audio apparatus <NUM> and a right surround speaker disposed on the right side of the audio apparatus <NUM>. In addition, the speaker <NUM> includes a tweeter capable of outputting high-frequency sound, a mid-range speaker capable of outputting intermediate frequency sound, and a woofer capable of outputting a low-frequency sound in order to output sound of various frequency bands.

In addition, the speaker <NUM> may include an audio amplifier that amplifies an audio signal to output sound of various intensities.

The display <NUM> includes a LED <NUM> that displays the operation of the audio apparatus <NUM>. The audio apparatus <NUM> may omit a display panel for displaying an image to ensure a compact appearance.

The LED <NUM> may display the operation of the audio apparatus <NUM> using a color of light or blinking of light. For example, the LED <NUM> may display a "standby state" or an "on state" of the audio apparatus <NUM>. In addition, the LED <NUM> may display a state in which a user input is waited or an operation in which the audio apparatus <NUM> reproduces music.

The communication interface <NUM> may exchange data with an external device, such as the display apparatus <NUM>. The communication interface <NUM> may include a wired communication module <NUM> and a wireless communication module <NUM>, and may be the same as the communication interface <NUM> of the display apparatus <NUM>.

The storage <NUM> may store programs and data for controlling the audio apparatus <NUM>. The storage <NUM> may include a storage medium <NUM> and may be the same as the storage <NUM> of the display apparatus <NUM>.

The controller <NUM> may include a processor <NUM> for processing audio data and a memory <NUM> for memorizing/storing programs and data for processing audio data.

The memory <NUM> may store programs and data for processing audio data, and may be the same as the memory <NUM> of the display apparatus <NUM>.

The processor <NUM> may process an audio signal through the content interface <NUM> and/or the communication interface <NUM>. The audio signal processed by the processor <NUM> may be output through the speaker <NUM>.

With regard to power, the audio apparatus <NUM> may be set into three states including an "off state", a "standby state" and an "on state", and depending on the power state of the audio apparatus <NUM>, the processor <NUM> may perform different operations.

For example, in the "on state", the processor <NUM> may receive an audio signal from the display apparatus <NUM> through the content interface <NUM> and output sound according to the audio signal through the speaker <NUM>.

In addition, in the "on state", the processor <NUM> may transmit operation information indicating detailed operations of the audio apparatus <NUM> to the display apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>. The audio apparatus <NUM> includes the LED <NUM> that displays the operation of the audio apparatus <NUM>, but the LED <NUM> has a limitation in displaying detailed information of the audio apparatus <NUM>. Accordingly, the processor <NUM> may transmit operation information of the audio apparatus <NUM> to the display apparatus <NUM> such that detailed information of the audio apparatus <NUM> is displayed on the display apparatus <NUM>.

<FIG> illustrates operations of the display apparatus and the audio apparatus according to an embodiment. <FIG> illustrates an image displayed on the display apparatus according to the operation shown in <FIG>.

Referring to <FIG> and <FIG>, an operation (<NUM>) of the display apparatus <NUM> and the audio apparatus <NUM> will be described.

The display apparatus <NUM> may be connected to the audio apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>, and the audio apparatus <NUM> may also be connected to the display apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>. In addition, the display apparatus <NUM> may be set into an "on state" or a "standby state". The audio apparatus <NUM> may also be set into an "on state" or a "standby state".

The audio apparatus <NUM> transmits operation information to the display apparatus <NUM> (<NUM>).

In the "on state" or the "standby state", the controller <NUM> of the audio apparatus <NUM> may collect operation information of components included in the audio apparatus <NUM>. For example, the controller <NUM> may collect identification information of the audio apparatus <NUM> (e.g., a model name of the audio apparatus), the volume of the speaker <NUM>, a connection method with the display apparatus <NUM>, a sound output mode (e.g., a surround mode or a mono mode) of the speaker <NUM>, and the like.

In the "on state", the content interface <NUM>, the communication interface <NUM>, and the controller <NUM> of the audio apparatus <NUM> may be activated. Further, in the "standby state", the content interface <NUM> and/or the communication interface <NUM> may be activated, and the controller <NUM> may be partially activated.

The controller <NUM> may transmit the collected operation information of the audio apparatus <NUM> to the display apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>.

The display apparatus <NUM> receives the operation information of the audio apparatus <NUM> (<NUM>).

In the "on state" or "standby state", the controller <NUM> of the display apparatus <NUM> may acquire the operation information of the audio apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>. In the "on state", the content interface <NUM>, the communication interface <NUM>, and the controller <NUM> of the display apparatus <NUM> may be activated. Further, in the "standby state", the content interface <NUM> and/or the communication interface <NUM> may be activated, and the controller <NUM> may also be partially activated.

The display apparatus <NUM> displays the operation information of the audio apparatus <NUM> (<NUM>).

The controller <NUM> of the display apparatus <NUM> may control the display <NUM> to display the operation information of the audio apparatus <NUM>. For example, the microcomputer of the processors <NUM> may control the display <NUM> to display an image corresponding to the operation information of the audio apparatus <NUM>.

The controller <NUM> may control the display <NUM> to display the operation information of the audio apparatus <NUM> on a portion of the display panel <NUM>.

The controller <NUM> may control the display <NUM> to display the operation information of the audio apparatus <NUM> on a lower portion of the display panel <NUM> as shown in <FIG>.

By displaying the operation information of the audio apparatus <NUM> on the lower portion of the display panel <NUM> in the "on state" of the display apparatus <NUM>, the display apparatus <NUM> may prevent display of content on the display panel <NUM> from being interrupted.

In addition, in the "standby state" of the display apparatus <NUM>, the display apparatus <NUM> may control the display <NUM> to display an image having a bright color, such as white, on a background screen of a black in which light is not output, to thereby minimize the amount of power consumed by the display panel <NUM>. For example, the controller <NUM> may control the display <NUM> to emit light only from a lower portion of the backlight unit 152b while passing light through a lower portion of the liquid crystal panel 152a. As another example, the controller <NUM> may control the display <NUM> to emit light only at a lower portion of the LED panel 152c.

Referring to <FIG>, the controller <NUM> may control the display <NUM> to display an image object <NUM> representing identification information of the audio apparatus <NUM>, an image object <NUM> representing the volume of the speaker <NUM> of the audio apparatus <NUM>, an image object <NUM> representing a connection method with the audio apparatus <NUM>, an image object <NUM> representing a sound output mode of the speaker <NUM>, and the like.

The audio apparatus <NUM> acquires a user input (<NUM>).

While the display apparatus <NUM> is displaying the operation information of the audio apparatus <NUM>, a user may input a user input through the user inputter <NUM> of the audio apparatus <NUM>. For example, the user may input a user input for reproducing audio, increasing the volume of the speaker <NUM>, or changing the sound output mode of the speaker <NUM> through the input button <NUM> of the audio apparatus <NUM>.

The controller <NUM> of the audio apparatus <NUM> may acquire the user input from the user inputter <NUM> and may control the audio apparatus <NUM> in response to the user input. For example, the controller <NUM> may reproduce audio, increase the volume of the speaker <NUM>, or change the sound output mode of the speaker <NUM>.

The audio apparatus <NUM> transmits the updated operation information to the display apparatus <NUM> (<NUM>).

The controller <NUM> of the audio apparatus <NUM> may collect operation information updated after a user input, and may transmit the updated operation information of the audio apparatus <NUM> to the display apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>. For example, the controller <NUM> may transmit operation information, which has been changed from reproducing audio, increasing the volume of the speaker <NUM>, or changing the sound output mode of the speaker <NUM>, to the display apparatus <NUM>.

The display apparatus <NUM> receives the updated operation information of the audio apparatus <NUM> (<NUM>), and displays the updated operation information by the audio apparatus <NUM> (<NUM>).

The controller <NUM> of the display apparatus <NUM> may receive the updated operation information of the audio apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>. In addition, the controller <NUM> may control the display <NUM> to display the operation information changed from the reproducing of audio, increasing of the volume of the speaker <NUM>, or changing of the sound output mode of the speaker <NUM>.

As described above, the display apparatus <NUM> may receive operation information of the audio apparatus <NUM> and display the operation information of the audio apparatus <NUM>. Accordingly, the display apparatus <NUM> may provide a user with detailed information about the audio apparatus <NUM> that does not include a display panel. Even when the audio apparatus <NUM> includes a display panel, the display apparatus <NUM> may allow detailed information about the audio apparatus <NUM> to be displayed on the display panel <NUM> with a high visibility. In addition, the user may easily acquire information about the audio apparatus <NUM> through the display apparatus <NUM>.

The display apparatus <NUM> may be connected to the audio apparatus <NUM> and may be set into an "on state" or a "standby state". In addition, the audio apparatus <NUM> may be set into an "on state".

The audio apparatus <NUM> transmits operation information and information about an application related to audio reproduction (hereinafter, referred to as 'audio application information') to the display apparatus <NUM> (<NUM>).

The controller <NUM> of the audio apparatus <NUM> may collect operation information about the audio apparatus <NUM> including identification information of the audio apparatus <NUM>, a volume of the speaker <NUM>, a connection method with the display apparatus <NUM>, and a sound output mode of the speaker <NUM>.

In addition, the controller <NUM> may collect information about an application related to audio reproduction that is stored in the storage <NUM>. The storage <NUM> may store a radio broadcast application that reproduces public radio broadcasts, an internet radio application that plays Internet audio streaming (internet music broadcast), and an audio player that reproduces audio files stored in the storage <NUM> or an external storage, and the like.

The controller <NUM> may transmit the operation information and the audio application information of the audio apparatus <NUM> to the display apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>.

The display apparatus <NUM> receives the operation information and the audio application information of the audio apparatus <NUM> (<NUM>).

The controller <NUM> of the display apparatus <NUM> may acquire the operation information and the audio application information of the audio apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>.

Operation <NUM> may be similar to operation <NUM> illustrated in <FIG>.

The display apparatus <NUM> displays the operation information and the audio application information of the audio apparatus <NUM> (<NUM>).

The controller <NUM> of the display apparatus <NUM> may control the display <NUM> to display the operation information and the audio application information of the audio apparatus <NUM> on a portion of the display panel <NUM>. For example, as shown in <FIG>, the controller <NUM> may display image objects <NUM>, <NUM>, <NUM>, and <NUM> representing operation information of the audio apparatus <NUM>, an image object <NUM> representing a radio application stored in the audio apparatus <NUM>, an image object <NUM> representing an audio streaming application stored in the audio apparatus <NUM>, and a playlist of an audio player stored in the audio apparatus <NUM>, on a lower portion of the display panel <NUM>.

While the display apparatus <NUM> is displaying the operation information and the audio application information of the audio apparatus <NUM>, the display apparatus <NUM> acquires a user input for the audio apparatus <NUM> (<NUM>).

A user may input a user input for the audio apparatus <NUM> through the user inputter <NUM> of the display apparatus <NUM>. A user may input a user input for reproducing audio of the audio apparatus <NUM>, increasing the volume of the speaker <NUM>, or changing the sound output mode of the speaker <NUM> through the remote control 112a of the display apparatus <NUM>. In addition, a user may input a user input for executing a radio application or an audio streaming application of the audio apparatus <NUM> through the remote control 112a of the display apparatus <NUM>.

The user may select the image object <NUM> representing the sound volume of the audio apparatus <NUM> and adjust the sound volume of the audio apparatus <NUM> using the remote control 112a. In addition, the user may execute the radio application of the audio apparatus <NUM> using the remote control 112a. In other words, the image objects <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, and <NUM> displayed on the display <NUM> may serve as a control menu for acquiring a user input. The display apparatus <NUM> may acquire a user input through the image objects (or the control menus) <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, and <NUM> displayed on the display <NUM> and the remote control 112a.

The controller <NUM> of the display apparatus <NUM> may acquire a user input for the audio apparatus <NUM> through the user inputter110.

The display apparatus <NUM> transmits information about the user input (hereinafter, referred to as 'user input information') to the audio apparatus <NUM> (<NUM>).

The controller <NUM> of the display apparatus <NUM> may transmit the user input information to the audio apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM> in response to the user input for the audio apparatus <NUM>.

The audio apparatus <NUM> receives the user input information from the display apparatus <NUM> (<NUM>).

The controller <NUM> of the audio apparatus <NUM> may receive the user input information from the display apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>.

The audio apparatus <NUM> operates in response to the user input inputted to the display apparatus <NUM> (<NUM>).

The controller <NUM> of the audio apparatus <NUM> may receive the user input information, and acquire the user input on the basis of the user input information.

The controller <NUM> may control the audio apparatus <NUM> in response to the user input inputted through the display apparatus <NUM>. For example, the controller <NUM> may reproduce audio, increase the volume of the speaker <NUM>, or change the sound output mode of the speaker <NUM>. Alternatively, the controller <NUM> may execute a radio application stored in the storage <NUM> or an audio streaming app.

As described above, the display apparatus <NUM> may display audio application information of the audio apparatus <NUM> and acquire a user input from a user. Accordingly, the display apparatus <NUM> may allow a user to control the audio apparatus <NUM> through the user inputter <NUM> of the display apparatus <NUM>. The display apparatus <NUM> may display various images through the display <NUM>, so that a user may check various settings and commands that may be imputable to the audio apparatus <NUM> through the display <NUM>. In addition, the user may control the audio apparatus <NUM> using the remote control 112a of the display apparatus <NUM> at a remote site.

<FIG> illustrates an operation of the display apparatus according to an embodiment.

Referring to <FIG>, an operation (<NUM>) of the display apparatus <NUM> will be described.

The display apparatus <NUM> may be connected to the audio apparatus <NUM> and may be set into an "on state" or a "standby state".

The display apparatus <NUM> receives, stores, and displays operation information of the audio apparatus <NUM> (<NUM>).

The display apparatus <NUM> may receive the operation information of the audio apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>, and may also store the operation information of the audio apparatus <NUM>. The controller <NUM> of the display apparatus <NUM> may control the storage <NUM> to store the operation information of the audio apparatus <NUM>.

In addition, in the "standby state" of the display apparatus <NUM>, the controller <NUM> may control the display <NUM> to display the operation information of the audio apparatus <NUM>. Specifically, the controller <NUM> may control the display <NUM> to display the operation information on a portion of the display panel <NUM>.

The display apparatus <NUM> determines whether the time of displaying the operation information of the audio apparatus <NUM> is greater than or equal to a reference time (<NUM>).

The controller <NUM> may operate a timer in response to the operation information being displayed on the portion of the display panel <NUM>, and count the time of displaying the operation information of the audio apparatus <NUM> on the portion of the display panel <NUM>.

The controller <NUM> may compare the time of displaying the operation information of the audio apparatus <NUM> on the portion of the display panel <NUM> with a reference time. The reference time may be set experimentally or empirically.

Based on the comparison of the time for which the operation of the audio apparatus <NUM> is displayed with the reference time, the controller <NUM> may determine whether the time of displaying the operation information of the audio apparatus <NUM> is greater than or equal to the reference time.

In response to the time of displaying the operation information of the audio apparatus <NUM> being less than the reference time (No in operation <NUM>), the display apparatus <NUM> continues to display the operation information of the audio apparatus <NUM>.

In response to the time of displaying the operation information of the audio apparatus <NUM> being greater than or equal to the reference time (YES in operation <NUM>), the display apparatus <NUM> may turn off the display panel <NUM> (<NUM>).

In order to reduce the amount of power consumed for displaying the operation information of the audio apparatus <NUM>, the controller <NUM>, in response to the display time of the operation information of the audio apparatus <NUM> being greater than or equal to the reference time, may turn off the display panel <NUM>.

After the display panel <NUM> is turned off, the display apparatus <NUM> determines whether operation information of the audio apparatus <NUM> has been received (<NUM>).

The audio apparatus <NUM>, in response to the operation thereof being changed according to a user input, may update the operation information based on the changed operation, and transmit the updated operation information. Specifically, the audio apparatus <NUM> may transmit updated operation information whenever the operation information is updated.

The controller <NUM> of the display apparatus <NUM> may determine whether updated operation information has been received from the audio apparatus <NUM>.

In response to operation information of the audio apparatus <NUM> being received (YES in operation <NUM>), the display apparatus <NUM> stores the operation information of the audio apparatus <NUM> (<NUM>).

In response to operation information of the audio apparatus <NUM> being received, it is determined that the operation of the audio apparatus <NUM> has been changed.

The controller <NUM> may store new operation information of the audio apparatus <NUM> or updated operation information of the audio apparatus <NUM> in the storage <NUM>.

Thereafter, the display apparatus <NUM> displays the operation information of the audio apparatus <NUM> (<NUM>).

The controller <NUM> may control the display <NUM> to display the updated operation information of the audio apparatus <NUM> on a portion of the display panel <NUM>.

Thereafter, the display apparatus <NUM> may determine again whether the time of displaying the operation information of the display apparatus <NUM> is greater than or equal to the reference time.

In response to no operation information of the audio apparatus <NUM> being received (No in operation <NUM>), the display apparatus <NUM> determines whether a user input has been acquired (<NUM>).

The controller <NUM> may determine whether a user input has been input through the user inputter <NUM> in an off-state of the display panel <NUM>. In other words, the controller <NUM> may determine whether a user has input a new user input after the display panel <NUM> is turned off.

In response to no user input being acquired (No in operation <NUM>), the display apparatus <NUM> may determine again whether operation information of the audio apparatus <NUM> has been received.

In response to a user input being acquired (YES in operation <NUM>), the display apparatus <NUM> determines whether previously stored operation information of the audio apparatus <NUM> exists in the storage <NUM> (<NUM>).

The controller <NUM> may determine whether operation information of the audio apparatus <NUM> to be displayed on the display panel <NUM> is stored in the storage <NUM> before the acquisition of the user input. In other words, the controller <NUM> may determine whether operation information of the audio apparatus <NUM> is previously stored in the storage <NUM> to display the operation information of the audio apparatus <NUM> in response to the acquisition of the user input.

In response to previously stored operation information of the audio apparatus <NUM> not existing (No in operation <NUM>), the display apparatus <NUM> may determine again whether operation information of the audio apparatus <NUM> has been received.

In response to previously stored operation information of the audio apparatus <NUM> existing (YES in operation <NUM>), the display apparatus <NUM> displays the operation information of the audio apparatus <NUM> (<NUM>).

Thereafter, the display apparatus <NUM> may determine again whether the time of displaying the operation information of the audio apparatus <NUM> on the display apparatus <NUM> is greater than or equal to the reference time.

As described above, the display apparatus <NUM> may display operation information of the audio apparatus <NUM> on a portion of the display panel <NUM>, and may turn off the display panel <NUM> when the time of displaying the operation information of the audio apparatus <NUM> is greater than or equal to the reference time. Accordingly, the display apparatus <NUM> may reduce the amount of power consumed for displaying operation information of the audio apparatus <NUM> in the "standby state".

The display apparatus <NUM>, in response to operation information of the audio apparatus <NUM> being updated during an off-state of the display panel <NUM>, may display the updated operation information of the audio apparatus <NUM> on the display panel <NUM>. Accordingly, the display apparatus <NUM> may immediately notify the user of a change in operation or setting of the audio apparatus <NUM>.

The display apparatus <NUM> may, in response to a user input being input during an off-state of the display panel <NUM>, display updated operation information of the audio apparatus <NUM> on the display panel <NUM>. Accordingly, the display apparatus <NUM> may provide the user with operation information of the audio apparatus <NUM> whenever the user desires.

<FIG> illustrates operations of the display apparatus and the audio apparatus according to an embodiment.

Referring to <FIG>, an operation (<NUM>) of the display apparatus <NUM> and the audio apparatus <NUM> will be described.

The audio apparatus <NUM> transmits operation information to the display apparatus <NUM> (<NUM>). The display apparatus <NUM> receives the operation information of the audio apparatus <NUM> (<NUM>). The display apparatus <NUM> displays the operation information of the audio apparatus <NUM> (<NUM>).

Operations <NUM>, <NUM>, and <NUM> may be the same as operations <NUM>, <NUM>, and <NUM> shown in <FIG>.

The audio apparatus <NUM> reproduces audio (<NUM>).

While the display apparatus <NUM> is displaying the operation information of the audio apparatus <NUM>, the audio apparatus <NUM> may reproduce audio in response to a user input. For example, the user may input a user input (e.g., pressing a play button) for reproducing audio through the input button <NUM> of the audio apparatus <NUM>. The controller <NUM> of the audio apparatus <NUM> may acquire a user input from the user inputter <NUM> and reproduce audio in response to the user input.

As another example, a user may input a user input for reproducing audio through the remote control 112a of the display apparatus <NUM>. In response to the user input for the audio apparatus <NUM> being received, the controller <NUM> of the display apparatus <NUM> may transmit user input information to the audio apparatus <NUM>. The audio apparatus <NUM> may reproduce audio in response to the user input received from the display apparatus <NUM>.

The audio apparatus <NUM> transmits an audio signal based on the reproduction of the audio to the display apparatus <NUM> (<NUM>). The audio apparatus <NUM> outputs sound according to the audio signal (<NUM>).

The controller <NUM> of the audio apparatus <NUM> may reconstruct an audio signal from an audio file or a radio broadcast signal, and transmit the audio signal to the display apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>.

Further, the controller <NUM> of the audio apparatus <NUM> may control the speaker <NUM> to convert the audio signal into sound and output the sound according to the audio signal.

The audio signal transmitted from the audio apparatus <NUM> to the display apparatus <NUM> may be the same as or corresponding to the audio signal output from the audio apparatus <NUM>.

The display apparatus <NUM> receives the audio signal from the audio apparatus <NUM> (<NUM>).

The controller <NUM> of the display apparatus <NUM> may receive the audio signal through the content interface <NUM> and/or the communication interface <NUM>.

The display apparatus <NUM> outputs sound according to the audio signal (<NUM>).

The controller <NUM> of the display apparatus <NUM> may control the speaker <NUM> to convert the audio signal into sound and output the sound according to the audio signal. The sound output from the display apparatus <NUM> may be the same as or correspond to the sound output from the audio apparatus <NUM>. For example, the display apparatus <NUM> may output sound for assisting the output of the sound of the audio apparatus <NUM>. In addition, the display apparatus <NUM> may output sound for enhancing a surround effect of the sound output from the audio apparatus <NUM>.

As described above, the display apparatus <NUM> may receive an audio signal from the audio apparatus <NUM> and output sound according to the audio signal together with the audio apparatus <NUM>. In other words, the display apparatus <NUM> may assist the audio apparatus <NUM>. As the display apparatus <NUM> outputs sound that is the same as or correspond to the sound of the audio apparatus <NUM>, the display apparatus <NUM> and the audio apparatus <NUM> may provide a user with richer sound compared to sound output only by the audio apparatus <NUM>.

The audio apparatus <NUM> reproduces audio (<NUM>). The audio apparatus <NUM> transmits an audio signal based on the reproduction of the audio to the display apparatus <NUM> (<NUM>). The audio apparatus <NUM> outputs sound according to the audio signal (<NUM>).

The display apparatus <NUM> visualizes the audio signal received from the audio apparatus <NUM> (<NUM>).

The controller <NUM> of the display apparatus <NUM> may execute a display application (hereinafter, referred to as a "sound visualization application") for visualize an audio signal or sound in response to a user input. For example, a display application for visualizing an audio signal or a sound may be stored in the storage <NUM>. In the "on state" of the display apparatus <NUM>, the controller <NUM> may control the display <NUM> to display a plurality of display applications that may be executable, and in response to a user's selection by the remote control 112a, may execute the sound visualization application.

When the sound visualization application is executed, the controller <NUM> may control the display <NUM> to display a shape, letter, number, or symbol corresponding to the audio signal or sound. For example, the controller <NUM> may visualize a waveform of sound, a frequency of sound, intensities of sound for each frequency, a rhythm, a melody, and harmony.

The controller <NUM> may visualize a position at which the audio apparatus <NUM> outputs sound and an intensity of the output sound. As shown in <FIG>, the controller <NUM> may control the display <NUM> to display an image <NUM> (e.g., a photographed picture of the audio apparatus) representing the audio apparatus <NUM>.

The controller <NUM> may display an image representing sound output from the audio apparatus <NUM> depending on the audio signal received from the audio apparatus <NUM>. As shown in <FIG>, the controller <NUM> may, depending on the audio signal, control the display <NUM> to display a first image <NUM> representing sound output from a center speaker (e.g., a woofer) of the audio apparatus <NUM>, a second image <NUM> representing sound output from a left speaker of the audio apparatus <NUM>, and a third image <NUM> representing sound output from a right speaker of the audio apparatus <NUM>.

The controller <NUM> may control the speaker <NUM> to output sound according to the audio signal received from the audio apparatus <NUM>. In addition, the controller <NUM> may display an image representing sound output from the speaker <NUM> depending on the audio signal received from the audio apparatus <NUM>. As shown in <FIG>, the controller <NUM> may control the display <NUM> to display a fourth image <NUM> representing sound output from a left speaker and a fifth image <NUM> representing sound output from a right speaker, depending on the audio signal.

As described above, the display apparatus <NUM> may display an image representing sound output of the audio apparatus <NUM>. Accordingly, the display apparatus <NUM> may provide a user with information about a location and/or direction in which sound is output from the audio apparatus <NUM>.

<FIG> illustrates a display apparatus and a plurality of audio apparatuses connected to the display apparatus according to an embodiment.

Referring to <FIG>, a display apparatus <NUM> may be connected to a first audio apparatus 200a and a second audio apparatus 200b in a wired and/or wireless manner. The display apparatus <NUM> may be the same as the display apparatus shown in <FIG>, <FIG>, <FIG>, and <FIG>, and the first and second audio apparatuses 200a and 200b may each be the same as that shown in <FIG> and <FIG>.

The display apparatus <NUM> may be connected to the first and second audio apparatuses 200a and 200b through the content interface <NUM> and/or the communication interface <NUM>. The display apparatus <NUM> may be connected to the first and second audio apparatuses 200a and 200b in a wired manner. For example, the display apparatus <NUM> may be connected to each of the first and second audio apparatuses 200a and 200b through a HDMI terminal.

The display apparatus <NUM> may be wirelessly connected to each of the first and second audio apparatuses 200a and 200b. The display apparatus <NUM> may be connected to each of the first and second audio apparatuses 200a and 200b using the same wireless communication. For example, the display apparatus <NUM> may be independently connected to each of the first audio apparatus 200a and the second audio apparatus 200b using Bluetooth wireless communication.

In addition, the display apparatus <NUM> may be connected to each of the first and second audio apparatuses 200a and 200b using a different wireless communication. For example, the display apparatus <NUM> may be connected to the first audio apparatus 200a using Wi-Fi wireless communication, and may be connected to the second audio apparatus 200b using Bluetooth wireless communication.

The display apparatus <NUM> may be connected to the first audio apparatus 200a in a wired manner, and may be connected to the second audio apparatus 200b through the wireless communication module <NUM> in a wireless manner. For example, the display apparatus <NUM> may be connected to the first audio apparatus 200a through a HDMI terminal, and may be connected to the second audio apparatus 200b through Bluetooth wireless communication.

The display apparatus <NUM> may output sound through the first and second audio apparatuses 200a and 200b. For example, the display apparatus <NUM> may transmit an audio signal to each of the first and second audio apparatuses 200a and 200b through the content interface <NUM> and/or the communication interface <NUM>, and each of the first and second audio apparatuses 200a and 200b may output sound according to the audio signal.

The display apparatus <NUM> transmits the same audio signal to the first and second audio apparatuses 200a and 200b, or may transmit audio signals (a left audio signal and a right side audio signal, e.g., an intermediate frequency audio signal and a low frequency audio signal) corresponding respectively to the first and second audio apparatuses 200a and 200b.

As such, the display apparatus <NUM> outputs sound through the plurality of audio apparatuses 200a and 200b, so that the display apparatus <NUM> may provide a user with a richer sound.

<FIG> illustrates operations of the display apparatus and the plurality of audio apparatuses according to an embodiment. <FIG> illustrates an image displayed on the display apparatus according to the operation shown in <FIG>.

Referring to <FIG> and <FIG>, an operation (<NUM>) of the display apparatus <NUM> and the plurality of audio apparatuses 200a and 200b will be described.

The display apparatus <NUM> may be connected to the first and second audio apparatuses 200a and 200b, and may be set into an "on state" or a "standby state". In addition, the first and second audio apparatuses 200a and 200b may be set into an "on state".

The first audio apparatus 200a transmits operation information to the display apparatus <NUM>, and the display apparatus <NUM> receives the operation information of the first audio apparatus 200a (<NUM>).

Operation <NUM> may be the same as operations <NUM> and <NUM> illustrated in <FIG>.

The second audio apparatus 200b transmits operation information to the display apparatus <NUM>, and the display apparatus <NUM> receives the operation information of the second audio apparatus 200b (<NUM>).

The display apparatus <NUM> displays the operation information of the first audio apparatus 200a and the operation information of the second audio apparatus 200b (<NUM>).

The controller <NUM> of the display apparatus <NUM> may control the display <NUM> such that a portion of the display panel <NUM> is activated, and the operation information of the first audio apparatus 200a and the operation information of the second audio apparatus 200b are displayed in the activated portion of the display panel <NUM>.

Referring to <FIG>, the controller <NUM> may control the display <NUM> such that the operation information of the first audio apparatus 200a and the operation information of the second audio apparatus 200b are displayed on a lower portion of the display panel <NUM>. The controller <NUM> may control the display <NUM> such that image objects <NUM> and <NUM> respectively representing pieces of identification information about the first and second audio apparatuses 200a and 200b, image objects <NUM> and <NUM> respectively representing volumes of the speakers of the first and second audio apparatuses 200a and 200b, image objects <NUM> and <NUM> respectively representing connection methods of the first and second audio apparatuses 200a and 200b, and image objects <NUM> and <NUM> respectively representing sound output modes of the first and second audio apparatuses 200a and <NUM> are displayed.

The first audio apparatus 200a reproduces audio (<NUM>).

Operation <NUM> may be the same as operation <NUM> illustrated in <FIG>.

The first audio apparatus 200a transmits an audio signal based on the reproduction of the audio to the display apparatus <NUM>, and the display apparatus <NUM> receives the audio signal from the first audio apparatus 200a (<NUM>).

The controller of the first audio apparatus 200a may transmit the audio signal to the display apparatus <NUM> through the content interface and/or the communication interface, and the controller <NUM> of the display apparatus <NUM> may receive the audio signal.

The display apparatus <NUM> transmits the audio signal based on the audio production of the first audio apparatus 200a to the second audio apparatus 200b, and the second audio apparatus 200b receives the audio signal from the display apparatus <NUM> (<NUM>).

The controller <NUM> of the display apparatus <NUM> may receive the audio signal based on the audio reproduction from the first audio apparatus 200a, and transmit the audio signal received from the first audio apparatus 200a to the second audio apparatus 200b through the content interface and/or the communication interface. The controller of the second audio apparatus 200b may receive the audio signal based on the audio reproduction of the first audio apparatus 200a.

The first audio apparatus 200a outputs sound according to the reproduced audio signal (<NUM>).

The controller of the first audio apparatus 200a may control the speaker to convert the audio signal into sound and output the sound according to the audio signal.

The display apparatus <NUM> outputs sound according to the audio signal received from the first audio apparatus 200a (<NUM>).

The controller <NUM> of the display apparatus <NUM> may control the speaker <NUM> to convert the audio signal into sound and output the sound according to the audio signal.

The second audio apparatus 200b outputs sound according to the audio signal received from the display apparatus <NUM> (<NUM>).

The controller of the second audio apparatus 200b may control the speaker to convert the audio signal into sound and output the sound according to the audio signal.

As described above, the display apparatus <NUM> may be connected to the plurality of audio apparatuses 200a and 200b to display respective pieces of operation information of the plurality of audio apparatuses 200a and 200b. Accordingly, the display apparatus <NUM> may provide a user with detailed information of the plurality of audio apparatuses 200a and 200b that do not include a display panel.

In addition, the display apparatus <NUM> may receive an audio signal from one of the audio apparatuses 200a and 200b and transmit the received audio signal to another audio apparatus 200b. The display apparatus <NUM> and the plurality of audio apparatuses 200a and 200b may each output sound that is the same as or corresponds to each other between the display apparatus <NUM> and the plurality of audio apparatuses 200a and 200b. As a result, the display apparatus <NUM> and the plurality of audio apparatuses 200a and 200b may provide a user with richer sound compared to sound output by only one audio apparatus 200a.

<FIG> illustrates a display apparatus, an audio apparatus connected to the display apparatus, and a user device connected to the audio apparatus according to an embodiment.

Referring to in <FIG>, a display apparatus <NUM> may be connected to an audio apparatus <NUM> in a wired and/or wireless manner, and may output sound through the audio apparatus <NUM>. The display apparatus <NUM> may be the same as the display apparatus shown in <FIG>, <FIG>, <FIG>, and <FIG>, and the audio apparatus <NUM> may be the same as the audio apparatus shown in <FIG> and <FIG>.

In addition, a user device <NUM> may also be connected to the audio apparatus <NUM> in a wired and/or wireless manner, and may output sound through the audio apparatus <NUM>. The user device <NUM> may be a computing device or a communication device that is provided separately from the display apparatus <NUM> to be carried by a user. For example, the user device <NUM> may be a handy terminal, a multimedia terminal, a personal digital assistant (PDA), a tablet computer, and a lap top computer, a smart watch, smart glasses, or the like.

The user device <NUM> may be connected to the audio apparatus <NUM> in a wireless manner. The user device <NUM> may transmit an audio signal to the audio apparatus <NUM>, and the audio apparatus <NUM> may output sound according to the audio signal received from the user device <NUM>.

The display apparatus <NUM> may be connected to the audio apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>, and the user device <NUM> may be connected to the audio apparatus <NUM> through the communication interface.

The display apparatus <NUM> may be connected to the audio apparatus <NUM> in a wired manner, and the user device <NUM> may be connected to the audio apparatus <NUM> in a wireless manner. For example, the display apparatus <NUM> may be connected to the audio apparatus <NUM> through a HDMI terminal, and the user device 300may be connected to the audio apparatus <NUM> using Wi-Fi wireless communication or Bluetooth wireless communication.

In addition, the display apparatus <NUM> may be connected to the audio apparatus <NUM> in a wireless manner, and the user device <NUM> may be connected to the audio apparatus <NUM> in a wireless manner. For example, the display apparatus <NUM> may be connected to the audio apparatus <NUM> using Wi-Fi wireless communication or Bluetooth wireless communication, and the user device <NUM> may be connected to the audio apparatus <NUM> using Bluetooth wireless communication or Wi-Fi wireless communication. The user device <NUM> may be connected to the audio apparatus <NUM> using short-range wireless communication.

The user device <NUM> may be connected to the audio apparatus <NUM> through heterogeneous wireless communication. For example, the user device <NUM> may authenticate communication with the audio apparatus <NUM> using short-range wireless communication, and transmit an audio signal to the audio apparatus <NUM> using Bluetooth wireless communication.

As such, the audio apparatus <NUM> may be connected to each of the display apparatus <NUM> and the user device <NUM>. The audio apparatus <NUM> may receive an audio signal from the display apparatus <NUM> and output sound according to the received audio signal. In addition, the audio apparatus <NUM> may receive an audio signal from the user device <NUM> and may output sound according to the received audio signal.

<FIG> illustrates operations of the display apparatus, the audio apparatus, and the user device according to an embodiment.

Referring to <FIG>, an operation (<NUM>) of the display apparatus <NUM>, the audio apparatus <NUM>, and the user device <NUM> will be described.

The display apparatus <NUM> may be connected to the audio apparatus <NUM> and may be set into an "on state" or a "standby state". In addition, the audio apparatus <NUM> may be set into an "on state". The user device <NUM> may be connected to the audio apparatus <NUM>.

The audio apparatus <NUM> transmits operation information to the display apparatus <NUM>, and the display apparatus <NUM> receives the operation information of the audio apparatus <NUM> (<NUM>).

The user device <NUM> reproduces audio (<NUM>).

While the display apparatus <NUM> is displaying the operation information of the audio apparatus <NUM>, the user device <NUM> may reproduce audio in response to a user input. For example, the user may input a user input for reproducing audio through a user interface of the user device <NUM>. The user device <NUM> may reproduce audio in response to a user input.

The user device <NUM> transmits an audio signal based on the audio reproduction to the audio apparatus <NUM>, and the audio apparatus <NUM> receives the audio signal from the user device <NUM> (<NUM>).

The user device <NUM> may reconstruct an audio signal from an audio file or reconstruct an audio signal from a radio broadcast signal, and transmit the audio signal to the audio apparatus <NUM> through a communication interface.

The controller <NUM> of the audio apparatus <NUM> may receive the audio signal from the user device <NUM> through the communication interface <NUM>.

The audio apparatus <NUM> outputs sound according to the audio signal (<NUM>).

The controller <NUM> of the audio apparatus <NUM> may control the speaker <NUM> to convert the audio signal received from the user device <NUM> into sound and output the sound according to the audio signal.

The audio apparatus <NUM> transmits the audio signal to the display apparatus <NUM>, and the display apparatus <NUM> receives the audio signal from the audio apparatus <NUM> (<NUM>). In addition, the display apparatus <NUM> outputs sound according to the audio signal (<NUM>).

Operations <NUM> and <NUM> may be the same as operations <NUM>, <NUM> and <NUM> shown in <FIG>.

The audio apparatus <NUM> transmits updated operation information to the display apparatus <NUM>, and the display apparatus <NUM> receives the updated operation information of the audio apparatus <NUM> (<NUM>). In addition, the display apparatus <NUM> dislays yhe updated operation information of the audio apparatus <NUM> (<NUM>).

Operations <NUM> and <NUM> may be the same as operations <NUM>, <NUM>, and <NUM> in <FIG>.

As described above, the display apparatus <NUM> may output sound according to an audio signal reproduced by the user device <NUM> together with the audio apparatus <NUM>. In other words, the display apparatus <NUM> may assist the audio apparatus <NUM> that outputs audio of the user device <NUM>. As the display apparatus <NUM> outputs sound that is the same as or corresponds to sound output by the audio apparatus <NUM>, the display apparatus <NUM> and the audio apparatus <NUM> may provide a user with richer sound compared to sound output by only the audio apparatus <NUM>.

<FIG> illustrates operations of the display apparatus, the audio apparatus, and the user device according to the claimed invention. <FIG> illustrates an image displayed on the display apparatus according to the operation shown in <FIG>.

Referring to <FIG> and <FIG>, an operation (<NUM>) of the display apparatus <NUM>, the audio apparatus <NUM>, and the user device <NUM> will be described.

The display apparatus <NUM> may be connected to the audio apparatus <NUM> and may be set into an "on state" or a "standby state". The audio apparatus <NUM> may be set into an "on state". In addition, the user device <NUM> may be connected to the audio apparatus <NUM>.

The user device <NUM> transmits information about an application related to audio reproduction (hereinafter, referred to as 'user application information') to the audio apparatus <NUM>, and the audio apparatus <NUM> receives the user application information from the user device <NUM> (<NUM>).

The user device <NUM> may collect information (user application information) related to reproduction of audio stored in a storage or memory. The user device <NUM> may store an Internet radio app that reproduces Internet audio streaming (internet music broadcast), an audio player that reproduces an audio file stored in an internal storage or an external storage, and the like.

The user device <NUM> may transmit the user application information to the audio apparatus <NUM> through a communication interface. For example, the user device <NUM> may transmit the user application information using Bluetooth wireless communication.

The controller <NUM> of the audio apparatus <NUM> may receive the user application information of the user device <NUM> through the communication interface <NUM>.

The audio apparatus <NUM> transmits operation information and audio application information of the audio apparatus <NUM>, and user application information to the display apparatus <NUM>, and the display apparatus <NUM> receives the operation information and the audio application information of the audio apparatus <NUM> and the user application information from the audio apparatus <NUM> (<NUM>).

The controller <NUM> of the audio apparatus <NUM> may collect the operation information about the audio apparatus <NUM> including identification information of the audio apparatus <NUM>, a volume of the speaker <NUM>, a connection method with the display apparatus <NUM>, and a sound output mode of the speaker <NUM>. In addition, the controller <NUM> may also collect information (audio application information) related to audio reproduction stored in the storage <NUM> or the memory <NUM>.

The audio apparatus <NUM> may transmit the operation information and the audio application information of the audio apparatus <NUM>, and the user application information received from the user device <NUM> to the display apparatus <NUM> through the content interface <NUM> and/or the communication interface <NUM>.

The controller <NUM> of the display apparatus <NUM> may acquire the operation information and the audio application information of the audio apparatus <NUM>, and the user application information through the content interface <NUM> and/or the communication interface <NUM>.

The display apparatus <NUM> displays the operation information and the audio application information of the audio apparatus <NUM>, and the user application information (<NUM>).

The controller <NUM> of the display apparatus <NUM> may control the display <NUM> to display the operation information and the audio application information of the audio apparatus <NUM>, and the user application information on a portion of the display panel <NUM>. For example, as shown in <FIG>, the controller <NUM> may control the display <NUM> to display image objects (or control menus) <NUM>, <NUM>, <NUM>, <NUM>, <NUM>, and <NUM> representing the operation information/audio application information of the audio apparatus <NUM>, an image object (or a control menu) <NUM> representing an audio player that reproduces an audio file of the user device <NUM>, and a playlist of the audio player on a lower portion of the display panel <NUM>.

While the display apparatus <NUM> is displaying the operation information and the audio application information of the audio apparatus <NUM>, and the user application information, the display apparatus <NUM> acquires a user input for the user device <NUM> (<NUM>).

A user may input a user input for the user device <NUM> through the user inputter <NUM> of the display apparatus <NUM>. For example, the user may input a user input for executing the audio player of the user device <NUM> through the remote control 112a of the display apparatus <NUM>.

The user may select the image object (or control menu) <NUM> representing the audio player indicating the sound volume of the audio apparatus <NUM> and execute the audio player of the user device <NUM> using the remote control 112a. In other words, the image object (or control menu) <NUM> may serve as a control menu for acquiring a user input.

The controller <NUM> of the display apparatus <NUM> may acquire a user input for the user device <NUM> through the user inputter <NUM>.

The display apparatus <NUM> transmits information about the user input (hereinafter, referred to as 'user input information') to the audio apparatus <NUM>, and the audio apparatus <NUM> receives the user input information from the display apparatus <NUM> (<NUM>).

The audio apparatus <NUM> transmits the user input information to the user device <NUM>, and the user device <NUM> receives the user input information from the audio apparatus <NUM> (<NUM>).

The audio apparatus <NUM> may transmit the user input information to the user device <NUM> through the communication interface <NUM>, and the user device <NUM> may receive the user input information from the audio apparatus <NUM>.

The user device <NUM> operates in response to the user input inputted to the display apparatus <NUM> (<NUM>).

The user device <NUM> may receive the user input information and acquire the user input on the basis of the user input information.

The user device <NUM> may execute a user application in response to the user input through the display apparatus <NUM>. For example, the user device <NUM> may execute an audio player in response to the user input through the display apparatus <NUM>. In addition, an audio signal reproduced by the audio player of the user device <NUM> may be transmitted to the audio apparatus <NUM>, and the audio apparatus <NUM> may output sound according to the audio signal.

As such, in order for the display apparatus <NUM> to display the user application information of the user device <NUM> and to control the user device <NUM> using a user input through the display apparatus <NUM>, a specific authentication procedure between the display apparatus <NUM> and the user device <NUM> may be required.

For example, when the user device <NUM> is disposed in a position close to the display apparatus <NUM>, the user device <NUM> may transmit information(hereinafter referred to as 'authentication information'), e.g., an authentication code or a password, for authentication to the display apparatus <NUM> using short-range wireless communication The display apparatus <NUM> may receive the authentication information using short-range wireless communication, and transmit the authentication information to the audio apparatus <NUM> together with the user input information.

As described above, the display apparatus <NUM> may display user application information of the user device <NUM> and acquire a user input from a user. Accordingly, the display apparatus <NUM> may allow a user to control the user device <NUM> through the user inputter <NUM> of the display apparatus <NUM>. In addition, while listening to audio of the user device <NUM>, a user may control an operation related to the audio of the user device <NUM> through the display apparatus <NUM> without directly manipulating the user device <NUM>.

The display apparatus according to the embodiment may include a display, a content interface configured to receive a broadcast signal, a communication interface, and a controller electrically connected to the display, the content interface, and the communication interface, wherein the controller is configured to control the display to display an image corresponding to the broadcast signal received through the content interface, receive operation information of an external audio apparatus through at least one interface selected from the content interface and the communication interface, and control the display to display a control menu for representing the operation information of the external audio apparatus and controlling the external audio apparatus on the basis of the operation information of the external audio apparatus.

Accordingly, the display apparatus may provide a user with detailed information about the audio apparatus that does not include a display panel. Even when the audio apparatus includes a display panel, the display apparatus may display detailed information about the audio apparatus on the display panel with a high visibility, so that the user may easily acquire information about the audio apparatus through the display apparatus.

The controller may be configured to acquire a user input for controlling the external audio apparatus through the control menu displayed on the display and the user input inputter, and transmit the user input to the external audio apparatus through the at least one interface. In detail, the controller may be configured to receive information about an application related to audio reproduction of the external audio apparatus through the at least one interface, display another control menu for representing information about the application of the external audio apparatus and executing the application of the external audio apparatus, acquire another user input for executing the application through the another control menu displayed on the display and the user inputter, and transmit the another user input to the external audio apparatus through the at least one interface.

Accordingly, the display apparatus may allow a user to control the audio apparatus through the user inputter of the display apparatus. The display apparatus may display various images through the display, so that a user may check various settings and commands that may be inputable to the audio apparatus through the display. In addition, the user may control the audio apparatus using the remote control of the display apparatus at a remote site.

The controller may turn off the display in response to a time of displaying the control menu on the display that is longer than or equal to a reference time.

Accordingly, the display apparatus may reduce the amount of power consumed for displaying operation information of the audio apparatus.

The controller may be configured to receive an audio signal from the external audio apparatus through the at least one interface, and control a speaker to output sound according to the received audio signal through the speaker.

Accordingly, the display apparatus may assist the audio apparatus. As the display apparatus outputs sound that is the same as or corresponds to the sound of the audio apparatus, the display apparatus and the audio apparatus may provide a user with sound that is richer than the sound output only by the audio apparatus.

The controller may be configured to receive an audio signal from the external audio apparatus through the at least one interface, and control the display to display an image that visualizes the received audio signal.

Accordingly, the display apparatus may provide a user with information about a location and/or direction in which sound is output from the audio apparatus.

The controller may be configured to receive operation information of another audio apparatus through another interface selected from the content interface and the communication interface, and control the display to display another control menu for representing the operation information of the another audio apparatus and controlling the another audio apparatus. In addition, the controller may be configured to receive an audio signal from the external audio apparatus through the at least one interface, and transmit the received audio signal to the another audio apparatus through the another interface.

Accordingly, the display apparatus may provide a user with detailed information of a plurality of audio apparatuses that do not include a display panel. In addition, the display apparatus and the plurality of audio apparatuses may provide a user with richer sound as compared to the sound output by only one audio apparatus.

The controller may be configured to receive an audio signal of an external user device communicating with the external audio apparatus from the external audio apparatus through the at least one interface; and output sound according to the received audio signal of the external user device through the speaker.

Accordingly, the display apparatus may assist the audio apparatus that outputs audio of the user device. As the display apparatus outputs sound that is the same as or corresponds to sound output by the audio apparatus, the display apparatus and the audio apparatus may provide a user with sound that is richer than the sound output by only the audio apparatus.

The controller may be configured to: receive information about an application related to audio reproduction of an external user device communicating with the external audio apparatus from the external audio apparatus through the at least one interface, display another control menu for representing information about the application of the external user device and executing the application of the external user device, acquire another user input for executing the application of the external user device through the another control menu displayed on the display and the user inputter, and transmit the another user input to the external audio apparatus through the at least one interface such that the another user input is transmitted to the external user device.

Accordingly, the display apparatus may allow a user to control the user device through the user inputter of the display apparatus. In addition, while listening to audio of the user device, a user may control an operation related to the audio of the user device through the display apparatus without directly manipulating the user device.

Exemplary embodiments of the present disclosure have been described above. In the exemplary embodiments described above, some components may be implemented as a "module". Here, the term 'module' means, but is not limited to, a software and/or hardware component, such as a Field Programmable Gate Array (FPGA) or Application Specific Integrated Circuit (ASIC), which performs certain tasks. A module may advantageously be configured to reside on the addressable storage medium and configured to execute on one or more processors.

Thus, a module may include, by way of example, components, such as software components, object-oriented software components, class components and task components, processes, functions, attributes, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The operations provided for in the components and modules may be combined into fewer components and modules or further separated into additional components and modules. In addition, the components and modules may be implemented such that they execute one or more CPUs in a device.

With that being said, and in addition to the above described exemplary embodiments, embodiments can thus be implemented through computer readable code/instructions in/on a medium, e.g., a computer readable medium, to control at least one processing element to implement any above described exemplary embodiment. The medium can correspond to any medium/media permitting the storing and/or transmission of the computer readable code.

The computer-readable code can be recorded on a medium or transmitted through the Internet. The medium may include Read Only Memory (ROM), Random Access Memory (RAM), Compact Disk-Read Only Memories (CD-ROMs), magnetic tapes, floppy disks, and optical recording medium. Also, the medium may be a non-transitory computer-readable medium. The media may also be a distributed network, so that the computer readable code is stored or transferred and executed in a distributed fashion. Still further, as only an example, the processing element could include at least one processor or at least one computer processor, and processing elements may be distributed and/or included in a single device.

Claim 1:
A display apparatus (<NUM>) comprising:
a display (<NUM>);
a content interface (<NUM>);
a communication interface (<NUM>); and
a controller (<NUM>) configured to:
control the display (<NUM>) to display an image (I) corresponding to a broadcast signal received through the content interface (<NUM>);
receive operation information of an external audio apparatus (<NUM>) through at least one interface selected from the content interface (<NUM>) and the communication interface (<NUM>);
control the display (<NUM>) to display a first control menu to provide the operation information of the external audio apparatus (<NUM>) to control the external audio apparatus (<NUM>) based on the operation information of the external audio apparatus (<NUM>) and an operation information of the display apparatus;
control the display (<NUM>) to display a second control menu for representing information about an application of the external audio apparatus for audio reproduction of the external audio apparatus (<NUM>), the second control menu being selectable to control the application of the external audio apparatus (<NUM>); and
control the display (<NUM>) to display a third control menu for representing information about an application of an external user device (<NUM>) communicating with the external audio apparatus (<NUM>) for audio reproduction of the external user device (<NUM>), the third control menu being selectable to control the application of the external user device (<NUM>),
control the audio reproduction of the external audio apparatus and/or the external user device based on the input received through one of the first control menu, the second control menu, and the third control menu, which are displayed simultaneously on the display of the display apparatus,
wherein the controller (<NUM>) is further configured to:
receive the information about the application of the external audio apparatus (<NUM>) through the at least one interface, and
receive the information about the application of the external user device (<NUM>) communicating with the external audio apparatus (<NUM>) from the external audio apparatus (<NUM>) through the at least one interface.