Patent Description:
A display device has a function of receiving, processing, and displaying an image to be viewed by a user. For example, the display device receives a broadcast signal selected by a user among broadcast signals transmitted from a broadcasting station, separates an image signal from the received signal, and re-displays the separated image signal on a display.

Recently, by virtue of development of broadcasting technology and network technology, a function of a display device has been significantly diversified and accordingly the performance of the device has also been enhanced. That is, the display device has developed to provide various different contents as well as simply broadcast content to a user. For example, the display device can provide gameplay, listening to music, Internet shopping, user customized information, or the like using various applications as well as programs received from a broadcasting station. In order to perform such extended functions, the display device is basically connected to other devices or networks using various communication programs and provides a ubiquitous computing environment to a user. That is, the display device has evolved to a smart device for achieving connectivity to a network and ubiquitous computing.

On the other hand, in recent years, a flexible display that has enough elasticity to be greatly deformed has been developed. Such a flexible display is deformable enough to be rolled into a main body of the display apparatus.

The display apparatus may include a flexible display as described above in which an area protruding to the outside of the display is changed by being rolled or unrolled in a direction guided by a roller. By using such a rollable display, the display apparatus may have a more compact structure.

Accordingly, the entire display area may be exposed to the outside to display the content or only a part of the display area may be exposed to display the content in only a partial area.

On the other hand, it takes a certain time until the entire display area is exposed, and since only a part of the content is displayed in a state where only a part of the display area is exposed, there is a problem in that a viewer cannot accurately grasp the contents of the content.

Documents <CIT>, <CIT>, <CIT>, <CIT>, <CIT>, and <CIT> disclose prior art display apparatuses with rollable displays.

An object of the present disclosure is to provide a display apparatus capable of allowing a user to view the entire content even when the display is being extended.

An object of the present disclosure is to provide a display apparatus capable of utilizing a remaining area other than the content when the display is being extended.

An object of the present disclosure is to provide a display apparatus capable of minimizing interference with a user's image viewing when the display is being extended.

The present invention provides a display apparatus according to independent claim <NUM>. The dependent claims define further embodiments of the invention.

The display apparatus according to the embodiment of the present disclosure may comprise a housing, a display, a roller accommodated in the housing to rotate to roll or unroll the display and a control unit configured to control the display such that the entire content is displayed on the display extended from the housing while the display is being extended from the housing.

The control unit is configured to control the display such that the entire content is displayed while an image ratio of the content is being maintained.

The control unit is configured to control the display such that the entire content is displayed while an image size of the content increases when the display is being extended from the housing.

The display is configured to display the entire content such that an image size of the content increases while the image ratio of the content is maintained when the display is being extended from the housing.

The control unit is configured to maintain the image ratio of the content, and adjust the image size of the content to a maximum size according to the extended length of the display.

The control unit is configured to control the display such that a menu is further displayed on the display extended from the housing.

The control unit is configured to control the display such that the menu is displayed in an area other than the content in an extended area of the display which is extended from the housing.

The control unit is configured to control the display to switch content in response to an input signal instead of the content or display a sub-menu corresponding to the input signal instead of the menu when receiving the input signal for selecting any one icon in the menu.

The control unit is configured to control the display to display an image corresponding to a selection command for selecting a specific external device icon, instead of the content when the selection command is received.

The content is a broadcast image, and wherein the menu includes at least one of an application icon, a program icon, and an external device icon.

The control unit is configured to control the roller to stop the extension of the display when an input signal for selecting any one of the menu is received while the display is being extended from the housing.

The control unit is configured to control the roller such that the display is extended to a preset length when an input signal for selecting any one of the menu is received while the display is being extended from the housing is received.

The control unit is configured to control the display to display a screen indicating stop of extension of the display when the extension of the display is stopped before the display is extended to a maximum length.

The screen indicating the stop of extension of the display further includes an icon for selecting whether to extend the display to the maximum length, wherein the control unit is configured to control the roller such that the display is extended to the maximum length when the selection command for the icon is received.

The control unit is configured to control the display such that the content is displayed in a list form when the extended length of the display is less than or equal to a preset first length in a case where the content is displayed while the display is being extended from the housing.

The control unit is configured to control the display such that the content is displayed in a thumbnail form when the extended length of the display is greater than the first length and less than or equal to a second length longer than the first length in a case where the content is displayed while the display is being extended from the housing.

The control unit is configured to control the display such that the content is displayed in a full screen form when the extended length of the display is greater than the second length and less than or equal to a third length longer than the second length in a case where the content is displayed while the display is being extended from the housing.

The control unit is configured to control the display to display user preference information preferentially when displaying the content in a list form or a thumbnail form.

The control unit is configured to fix a position of a pointer is fixed on an icon when the pointer is located on any one icon in a case where an extended length of the display is increasing.

The control unit is configured to fix a position of a pointer displayed on the display when the display is extended from the housing.

According to an embodiment of the present disclosure, there is an advantage in that it is possible to provide a display apparatus capable of allowing a user to grasp the contents of content even when the display is not fully extended. That is, there is an advantage in that it is possible to provide a display apparatus for allowing a viewer to grasp the entire contents of the content even while the display is being extended.

According to an embodiment of the present disclosure, there is an advantage in that it is possible to provide a display apparatus capable of utilizing an area where no content is displayed while the display is being extended, and thus executing various functions as well as displaying content when the display is being extended.

According to an embodiment of the present disclosure, there is an advantage in that it is possible to provide a display apparatus capable of allowing the viewer to focus on the content by minimizing interference with a user's image viewing when the display is being extended.

Hereinafter, embodiments relating to the present disclosure will be described in detail with reference to the accompanying drawings. The suffixes "module" and "unit" for components used in the description below are assigned or mixed in consideration of easiness in writing the specification and do not have distinctive meanings or roles by themselves. In addition, in describing the embodiments disclosed herein, when it is determined that the detailed description of the related known technology may obscure the gist of the embodiments disclosed herein, the detailed description thereof will be omitted. The accompanying drawings are used to help easily understand various technical features and it should be understood that the embodiments presented herein are not limited by the accompanying drawings. As such, the present disclosure should be construed to extend to any alterations, equivalents and substitutes in addition to those which are particularly set out in the accompanying drawings.

It will be understood that although the terms first, second, etc. can be used herein to describe various elements, these elements should not be limited by these terms.

When an element is referred to as being "connected with" another element, the element can be connected with the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly connected with" another element, there are no intervening elements present.

A singular representation can include a plural representation unless it represents a definitely different meaning from the context.

It will be further understood that the terms "comprises," "comprising," "having," "having," "includes," "including" and/or variations thereof, when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

The display device described in this specification refers to a TV, a smart TV, a network TV, a hybrid broadcast broadband television (HBBTV), an Internet TV, a web TV, an Internet protocol television (IPTV), digital signage, a desktop computer, a smartphone, a laptop computer, a digital broadcast terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, a slate PC, a tablet PC, an ultrabook, a wearable device, etc. Including a rollable display. Here, rollable display means that a display can be rolled in the form of a roll and can include a flexible display, a foldable display, etc..

<FIG> is a block diagram illustrating a configuration of a display device according to an embodiment of the present disclosure.

Referring to <FIG>, a display device <NUM> includes a broadcast reception unit <NUM>, an external device interface unit <NUM>, a storage <NUM>, a user input interface unit <NUM>, a controller <NUM>, a wireless communication unit <NUM>, a voice acquisition unit <NUM>, a display <NUM>, an audio output unit <NUM>, and a power supply unit <NUM>.

The broadcast reception unit <NUM> can include a tuner <NUM>, a demodulation unit <NUM>, and a network interface unit <NUM>.

The tuner <NUM> can select a specific broadcast channel according to a channel selection command. The tuner <NUM> may receive broadcast signals for the selected specific broadcast channel.

The demodulation unit <NUM> can divide the received broadcast signals into video signals, audio signals, and broadcast program related data signals and restore the divided video signals, audio signals, and data signals to an output available form.

The network interface unit <NUM> provides an interface for connecting the display device <NUM> to a wired/wireless network including internet network. The network interface unit <NUM> can transmit or receive data to or from another user or another electronic device through an accessed network or another network linked to the accessed network.

Additionally, some content data stored in the display apparatus <NUM> can be transmitted to a user or an electronic device, which is selected from other users or other electronic devices pre-registered in the display apparatus <NUM>.

The network interface unit <NUM> can access a predetermined webpage through an accessed network or another network linked to the accessed network. That is, it may transmit or receive data to or from a corresponding server by accessing a predetermined webpage through network.

Then, the network interface unit <NUM> can receive contents or data provided from a content provider or a network operator. That is, the network interface unit <NUM> can receive contents such as movies, advertisements, games, VODs, and broadcast signals, which are provided from a content provider or a network provider, through network and information relating thereto.

Additionally, the network interface unit <NUM> can receive firmware update information and update files provided from a network operator and transmit data to an internet or content provider or a network operator.

The network interface unit <NUM> can also select and receive a desired application among applications open to the air, through network.

The external device interface unit <NUM> can receive an application or an application list in an adjacent external device and deliver it to the controller <NUM> or the storage <NUM>.

The external device interface <NUM> can also provide a connection path between the display device <NUM> and an external device. The external device interface <NUM> can receive at least one of image and audio output from an external device that is wirelessly or wiredly connected to the display device <NUM> and deliver it to the controller. An external device connectable to the external device interface unit <NUM> may be one of a set-top box, a Blu-ray player, a DVD player, a game console, a sound bar, a smartphone, a PC, a USB Memory, and a home theater system but this is just exemplary.

The storage <NUM> can store signal-processed image, voice, or data signals stored by a program in order for each signal processing and control in the controller <NUM>.

Additionally, the storage <NUM> can perform a function for temporarily store image, voice, or data signals output from the external device interface unit <NUM> or the network interface unit <NUM> and can store information on a predetermined image through a channel memory function.

The storage <NUM> can also store an application or an application list input from the external device interface unit <NUM> or the network interface unit <NUM>.

The display device <NUM> can play content files (for example, video files, still image files, music files, document files, application files, and so on) stored in the storage <NUM> and provide them to a user.

The user input interface unit <NUM> can deliver signals input from a user to the controller <NUM> or deliver signals from the controller <NUM> to a user. For example, the user input interface unit <NUM> can receive or process control signals such as power on/off, channel selection, and screen setting from the remote control device <NUM> or transmit control signals from the controller <NUM> to the remote control device <NUM> according to various communication methods such as Bluetooth, Ultra Wideband (WB), ZigBee, Radio Frequency (RF), and IR.

Additionally, the user input interface unit <NUM> can deliver, to the controller <NUM>, control signals input from local keys (not shown) such as a power key, a channel key, a volume key, and a setting key.

Image signals that are image-processed in the controller <NUM> can be input to the display <NUM> and displayed as an image corresponding to corresponding image signals. Additionally, image signals that are image-processed in the controller <NUM> can be input to an external output device through the external device interface unit <NUM>.

Voice signals processed in the controller <NUM> can be output to the audio output unit <NUM>. Additionally, voice signals processed in the controller <NUM> can be input to an external output device through the external device interface unit <NUM>.

Besides that, the control module <NUM> can control overall operations in the display device <NUM>.

Additionally, the controller <NUM> can control the display device <NUM> by a user command or internal program input through the user input interface unit <NUM> and download a desired application or application list into the display device <NUM> in access to network.

The control unit <NUM> may output channel information selected by a user together with processed image or voice signals through the display <NUM> or the audio output unit <NUM>.

Additionally, according to an external device image playback command received through the user input interface unit <NUM>, the controller <NUM> can output image signals or voice signals of an external device such as a camera or a camcorder, which are input through the external device interface unit <NUM>, through the display <NUM> or the audio output unit <NUM>.

Further, the controller <NUM> can control the display <NUM> to display images and control broadcast images input through the tuner <NUM>, external input images input through the external device interface unit <NUM>, images input through the network interface unit, or images stored in the storage <NUM> to be displayed on the display <NUM>. In this instance, an image displayed on the display <NUM> can be a still image or video and also can be a 2D image or a 3D image.

Additionally, the controller <NUM> can play content stored in the display device <NUM>, received broadcast content, and external input content input from the outside, and the content can be in various formats such as broadcast images, external input images, audio files, still images, accessed web screens, and document files. Further, the wireless communication unit <NUM> can perform a wired or wireless communication with an external electronic device.

The communication unit <NUM> may communicate with an external device through wired or wireless communication. The communication unit <NUM> can perform short-range communication with an external device. For this, the wireless communication unit <NUM> can support short-range communication by using at least one of Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct, and Wireless Universal Serial Bus (USB) technologies. The communication unit <NUM> can support wireless communication between the display device <NUM> and a wireless communication system, between the display device <NUM> and another display device <NUM>, or between networks including the display device <NUM> and another display device <NUM> (or an external server) through wireless area networks. The local area networks may be wireless personal area networks).

Herein, the other display device <NUM> can be a mobile terminal such as a wearable device (for example, a smart watch, a smart glass, and a head mounted display (HMD)) or a smartphone, which is capable of exchanging data (or inter-working) with the display device <NUM>. The wireless communication unit <NUM> can detect (or recognize) a communicable wearable device around the display device <NUM>. Furthermore, if the detected wearable device is a device authenticated to communicate with the display device <NUM>, the controller <NUM> can transmit at least part of data processed in the display device <NUM> to the wearable device through the wireless communication unit <NUM>. Accordingly, a user of the wearable device can use the data processed in the display device <NUM> through the wearable device.

The display <NUM> can convert image signals, data signals, or OSD signals, which are processed in the controller <NUM>, or images signals or data signals, which are received in the external device interface unit <NUM>, into R, G, and B signals to generate driving signals.

The display <NUM> may be a rollable display.

The rollable display may be retracted into the housing <NUM> (see <FIG>) and rolled onto a roller <NUM> (see <FIG>), or extended out of a housing <NUM> (see <FIG>) and unrolled from the roller <NUM> (see <FIG>).

The display apparatus <NUM> may include a rollable display, and an area in which content is displayed may be increased or decreased according to extension or retraction of the rollable display.

Hereinafter, the display <NUM> to be described below may refer to a rollable display.

Furthermore, the display device <NUM> shown in <FIG> is just one embodiment of the present disclosure and thus, some of the components shown can be integrated, added, or omitted according to the specification of the actually implemented display device <NUM>.

That is, if needed, two or more components can be integrated into one component or one component can be divided into two or more components and configured. Additionally, a function performed by each block is to describe an embodiment of the present disclosure and its specific operation or device does not limit the scope of the present disclosure.

According to another embodiment of the present disclosure, unlike <FIG>, the display device <NUM> can receive images through the network interface unit <NUM> or the external device interface unit <NUM> and play them without including the tuner <NUM> and the demodulation unit <NUM>.

For example, the display device <NUM> can be divided into an image processing device such as a set-top box for receiving broadcast signals or contents according to various network services and a content playback device for playing contents input from the image processing device.

In this instance, an operating method of a display device according to an embodiment of the present disclosure described below can be performed by one of the display device described with reference to <FIG>, an image processing device such as the separated set-top box, and a content playback device including the display <NUM> and the audio output unit <NUM>. The audio output unit <NUM> receives the audio processed signal from the controller <NUM> and outputs the sound.

Next, referring to <FIG> and <FIG>, a remote control device is described according to an embodiment of the present disclosure.

<FIG> is a block diagram illustrating a remote control device according to an embodiment of the present disclosure, and <FIG> is a view illustrating an actual configuration of a remote control device according to an embodiment of the present disclosure.

First, referring to <FIG>, a remote control device <NUM> can include a fingerprint recognition unit <NUM>, a wireless communication unit <NUM>, a user input unit <NUM>, a sensor unit <NUM>, an output unit <NUM>, a power supply unit <NUM>, a storage unit <NUM>, a controller <NUM>, and a voice acquisition unit <NUM>.

Referring to <FIG>, the wireless communication unit <NUM> transmits/receives signals to/from an arbitrary any one of display devices according to the above-mentioned embodiments of the present disclosure.

The remote control device <NUM> may include an RF module <NUM> for transmitting/receiving signals to/from the display device <NUM> according to the RF communication standards and an IR module <NUM> for transmitting/receiving signals to/from the display device <NUM> according to the IR communication standards. Additionally, the remote control device <NUM> may include a Bluetooth module <NUM> for transmitting/receiving signals to/from the display device <NUM> according to the Bluetooth communication standards. Additionally, the remote control device <NUM> may include an NFC module <NUM> for transmitting/receiving signals to/from the display device <NUM> according to the Near Field Communication (NFC) communication standards and a WLAN module <NUM> for transmitting/receiving signals to/from the display device <NUM> according to the Wireless LAN (WLAN) communication standards.

Additionally, the remote control device <NUM> can transmit signals containing information on a movement of the remote control device <NUM> to the display device <NUM> through the wireless communication unit <NUM>.

Further, the remote control device <NUM> can receive signals transmitted from the display device <NUM> through the RF module <NUM> and if necessary, can transmit a command on power on/off, channel change, and volume change to the display device <NUM> through the IR module <NUM>.

The user input unit <NUM> can be configured with a keypad button, a touch pad, or a touch screen. Thus, a user can manipulate the user input unit <NUM> to input a command relating to the display device <NUM> to the remote control device <NUM>. If the user input unit <NUM> includes a hard key button, a user can input a command relating to the display device <NUM> to the remote control device <NUM> through the push operation of the hard key button. This will be described with reference to <FIG>.

Referring to <FIG>, the remote control device <NUM> can include a plurality of buttons. The plurality of buttons may include a fingerprint recognition button <NUM>, a power button <NUM>, a home button <NUM>, a live button <NUM>, an external input button <NUM>, a voice adjustment button <NUM>, a voice recognition button <NUM>, a channel change button <NUM>, a check button <NUM>, and a back button <NUM>.

The fingerprint recognition button <NUM> can be a button for recognizing a user's fingerprint. According to an embodiment of the present disclosure, the fingerprint recognition button <NUM> can perform a push operation and receive a push operation and a fingerprint recognition operation. The power button <NUM> can be a button for turning on/off the power of the display device <NUM>. The power button <NUM> can be a button for moving to the home screen of the display device <NUM>. The live button <NUM> can be a button for displaying live broadcast programs. The external input button <NUM> can be a button for receiving an external input connected to the display device <NUM>. The voice adjustment button <NUM> can be a button for adjusting the size of a volume output from the display device <NUM>. The voice recognition button <NUM> can be a button for receiving a user's voice and recognizing the received voice. The channel change button <NUM> can be a button for receiving broadcast signals of a specific broadcast channel. The check button <NUM> can be a button for selecting a specific function and the back button <NUM> can be a button for returning to a previous screen.

If the user input unit <NUM> includes a touch screen, a user can touch a soft key of the touch screen to input a command relating to the display device <NUM> to the remote control device <NUM>. Additionally, the user input unit <NUM> can include various kinds of input mechanisms manipulated by a user, for example, a scroll key and a jog key, and this embodiment does not limit the scope of the present disclosure.

The sensor unit <NUM> can include a gyro sensor <NUM> or an acceleration sensor <NUM> and the gyro sensor <NUM> can sense information on a movement of the remote control device <NUM>.

For example, the gyro sensor <NUM> can sense information on an operation of the remote control device <NUM> based on x, y, and z axes and the acceleration sensor <NUM> can sense information on a movement speed of the remote control device <NUM>. Further, the remote control device <NUM> can further include a distance measurement sensor and sense a distance with respect to the display <NUM> of the display device <NUM>.

The output unit <NUM> can output image or voice signals corresponding to a manipulation of the user input unit <NUM> or corresponding to signals transmitted from the display device <NUM>. A user can recognize whether the user input unit <NUM> is manipulated or the display device <NUM> is controlled through the output unit <NUM>.

For example, the output unit <NUM> can include an LED module <NUM> for flashing, a vibration module <NUM> for generating vibration, a sound output module <NUM> for outputting sound, or a display module <NUM> for outputting an image, if the user input unit <NUM> is manipulated or signals are transmitted/received to/from the display device <NUM> through the wireless communication unit <NUM>.

Additionally, the power supply unit <NUM> supplies power to the remote control device <NUM> and if the remote control device <NUM> does not move for a predetermined time, stops the power supply, so that power waste can be reduced. The power supply unit <NUM> can resume the power supply if a predetermined key provided at the remote control device <NUM> is manipulated.

The storage unit <NUM> can store various kinds of programs and application data necessary for a control or operation of the remote control device <NUM>. If the remote control device <NUM> transmits/receives signals wirelessly through the display device <NUM> and the RF module <NUM>, the remote control device <NUM> and the display device <NUM> transmits/receives signals through a predetermined frequency band.

The controller <NUM> of the remote control device <NUM> can store, in the storage unit <NUM>, information on a frequency band for transmitting/receiving signals to/from the display device <NUM> paired with the remote control device <NUM> and refer to it.

The controller <NUM> controls general matters relating to a control of the remote control device <NUM>. The controller <NUM> can transmit a signal corresponding to a predetermined key manipulation of the user input unit <NUM> or a signal corresponding to a movement of the remote control device <NUM> sensed by the sensor unit <NUM> to the display device <NUM> through the wireless communication unit <NUM>.

Additionally, the voice acquisition unit <NUM> of the remote control device <NUM> can obtain voice.

The voice acquisition unit <NUM> can include at least one microphone <NUM> and obtain voice through the microphone <NUM>.

<FIG> is a view of utilizing a remote control device according to an embodiment of the present disclosure.

<FIG> illustrates that a pointer <NUM> corresponding to the remote control device <NUM> is displayed on the display <NUM>.

In addition, a user can move or rotate the remote control device <NUM> vertically or horizontally. The pointer <NUM> displayed on the display <NUM> of the display device <NUM> corresponds to a movement of the remote control device <NUM>. Since the corresponding pointer <NUM> is moved and displayed according to a movement on a 3D space as show in the drawing, the remote control device <NUM> can be referred to as a spatial remote controller.

<FIG> illustrates that if a user moves the remote control device <NUM>, the pointer <NUM> displayed on the display <NUM> of the display device <NUM> is moved to the left in correspondence thereto.

Information on a movement of the remote control device <NUM> detected through a sensor of the remote control device <NUM> is transmitted to the display device <NUM>. The display device <NUM> can calculate the coordinates of the pointer <NUM> from the information on the movement of the remote control device <NUM>. The display device <NUM> can display the pointer <NUM> to match the calculated coordinates.

<FIG> illustrates that while a specific button in the remote control device <NUM> is pressed, a user moves the remote control device <NUM> away from the display <NUM>. Thus, a selection area in the display <NUM> corresponding to the pointer <NUM> can be zoomed in and displayed largely.

On the contrary, if a user moves the remote control device <NUM> close to the display <NUM>, a selection area in the display <NUM> corresponding to the pointer <NUM> can be zoomed out and displayed reduced.

If the remote control device <NUM> is away from the display <NUM>, a selection area can be zoomed out and if the remote control device <NUM> is close to the display <NUM>, a selection area can be zoomed in.

Additionally, if a specific button in the remote control device <NUM> is pressed, the recognition of a vertical or horizontal movement can be excluded. That is, if the remote control device <NUM> is moved away from or close to the display <NUM>, the up, down, left, or right movement cannot be recognized and only the back and forth movement can be recognized. While a specific button in the remote control device <NUM> is not pressed, only the pointer <NUM> is moved according to the up, down, left or right movement of the remote control device <NUM>.

Further, the moving speed or moving direction of the pointer <NUM> can correspond to the moving speed or moving direction of the remote control device <NUM>.

In addition, a pointer in this specification means an object displayed on the display <NUM> in correspondence to an operation of the remote control device <NUM>. Accordingly, besides an arrow form displayed as the pointer <NUM> in the drawing, various forms of objects are possible. For example, the above concept includes a point, a cursor, a prompt, and a thick outline. Then, the pointer <NUM> can be displayed in correspondence to one point of a horizontal axis and a vertical axis on the display <NUM> and also can be displayed in correspondence to a plurality of points such as a line and a surface.

Next, <FIG> is a cross-sectional view illustrating an internal part of a housing of a display device <NUM> according to the present disclosure.

As shown, the display device <NUM> can include a housing <NUM>, a display <NUM> drawn into or out from the housing <NUM>, and a roller <NUM> that guides the display <NUM> to be wound or unwound.

The roller <NUM> can be received in the housing <NUM>.

The roller <NUM> can be a rotatable guide bar.

The roller <NUM> may be rotatable such that the display <NUM> is wound or unwound. For example, as shown in <FIG>, when the roller <NUM> rotates in the R1 direction, the display <NUM> can be drawn out from the housing <NUM>. In contrast, when the roller <NUM> rotates in the R2 direction, the display <NUM> can be drawn into the housing <NUM>, while being wound around the roller <NUM>. Also, the display <NUM> may be extended or retracted in the left and right directions according to the arrangement of the housing.

The display <NUM> can be drawn out from the housing <NUM> or can be drawn into the housing <NUM> according to rotation of the roller <NUM>.

The controller <NUM> can control the display <NUM> to display content in an area of the display <NUM> drawn out from the housing <NUM>.

According to an embodiment, the display device <NUM> can further include a cover <NUM>. The cover <NUM> may be disposed in the housing <NUM> and protecting the display <NUM> drawn in the housing <NUM>.

As such, as the display <NUM> is drawn out from or drawn into the housing <NUM>, the area where content is displayed can increase or decrease. That is, the display area of the content of the display <NUM> varies as the display <NUM> is drawn out or drawn in.

Next, an extended length of the display <NUM> according to an operation mode of the display apparatus <NUM> will be described with reference to <FIG>.

<FIG> is a view illustrating an appearance of the display device when a mode of the display is the zero view mode according to an embodiment of the present disclosure, <FIG> is a view illustrating an appearance of the display device when a mode of the display is the partial view mode according to an embodiment of the present disclosure, and <FIG> is a view illustrating an appearance of the display device when a mode of the display is the full view mode according to embodiments of the present disclosure.

Meanwhile, terms used in the present disclosure, for example, "zero view mode", "partial view mode" and "full view mode" are merely examples for convenience of description, and thus these terms can be modified. Therefore, the present disclosure is not limited thereto.

The zero view mode is a mode in which the display <NUM> operates in a state in which the display <NUM> is entirely drawn in the housing <NUM>. For example, when operating in a speaker mode, the display device <NUM> can control the mode of the display to be in the zero view mode.

When the display <NUM> is in the zero view mode, the display <NUM> does not display content in the entire area of the display <NUM>. The display <NUM> can also be turned off in the zero view mode.

The partial view mode is a mode in which the display <NUM> operates in a state of being partially drawn out from the housing <NUM>. For example, when the display device <NUM> operates in a menu mode, a mood mode, a music mode, a frame mode, or a clock mode, the mode of the display can be controlled in the partial view mode.

When the display <NUM> is in the partial view mode, the display <NUM> can display content only in an area of the display <NUM> drawn out from the housing <NUM>. That is, in the partial view mode, the content is not displayed in an area of the display <NUM> drawn in the housing <NUM>.

The full view mode is a mode in which the display <NUM> operates in a state of being maximally drawn out from the housing <NUM>. That is, the full view mode is a mode in which a length of the display <NUM> drawn out from the housing <NUM> is a maximum. For example, when the display device <NUM> operates in a normal mode, the display can be controlled in the full view mode, and here, the normal mode can be a mode in which a broadcast image, an input image from the external device interface unit <NUM>, and the like is output.

When the display <NUM> is in the full view mode, content can be displayed in an area of the display <NUM> drawn from the housing <NUM>. In the full view mode, the display <NUM> can display content in the entire area of the display <NUM> available for outputting an image.

According to an embodiment of the present disclosure, the display apparatus <NUM> may include a housing <NUM> and a display <NUM> extendable from and retractable into the housing <NUM>, and may be installed in a such a way that the housing <NUM> is seated on the floor as shown in <FIG>.

In this case, the display <NUM> may be elongated in an upward direction when the display unit <NUM> is extended from the housing <NUM>. For example, when the display <NUM> is extended as shown in <FIG>, content may be displayed on the extended area of the display <NUM>. Further, when the display <NUM> is additionally extended from the housing <NUM> as shown in <FIG>, content may be displayed on the entire extended areas. The extended length L of the display <NUM> may be variable.

According to another embodiment, the display apparatus <NUM> may include a housing <NUM> and a display <NUM> extendable from and retractable into the housing <NUM>, and may be installed in a such a way that the housing <NUM> is fixed to a wall or the like.

In this case, the display <NUM> may be elongated in a left or right direction when the display unit <NUM> is extended from the housing <NUM>.

Meanwhile, the display apparatus <NUM> is not limited to the examples described above, and may be installed in various forms. For example, the display apparatus <NUM> may be installed in such a way that the housing <NUM> is fixed to the ceiling.

As described with reference to <FIG>, the display area of the content may be changed according to the extended length L of the display <NUM>.

In the display display <NUM> according to an embodiment of the present disclosure, when the power is turned off, the display <NUM> may be controlled in a zero-view mode, and when the power is turned on, the display <NUM> may be controlled in a partial-view mode or a full-view mode.

When the display <NUM> is fully retracted into the housing <NUM> and then starts to be extended from the housing <NUM> according to a power-on command, the content is displayed while a part is being cut until the display <NUM> is completely extended, so that a user may need to wait a predetermined time to view the entire content.

In addition, when content is displayed while the display <NUM> is being extended from the housing <NUM>, the entire content is not displayed until the display <NUM> is fully extended, so that there is a problem in that a viewer cannot accurately understand the content.

According to an embodiment of the present disclosure, an object of the present disclosure is to provide a display apparatus <NUM> for allowing a user to grasp the contents of content even when the display <NUM> is not extended fully.

<FIG> is a flowchart showing a method of operating a display apparatus according to an embodiment of the present disclosure.

The control unit <NUM> may receive a command to extend the display <NUM> (S10).

The command to extend the display <NUM> may be a command to extend the display <NUM> from the housing <NUM> or to increase the length of the display <NUM> extended from the housing <NUM>.

For example, the control unit <NUM> may recognize, as the command to extend the display <NUM>, a command that requires additional extension of the display <NUM>, such as a power-on command, a command to enter the partial-view mode from the zero-view mode, and a command to enter the full-view mode from the partial-view mode.

When the control unit <NUM> receives the command to extend the display <NUM>, the control unit <NUM> may display the entire content <NUM> (see <FIG>) on the extended display <NUM> while the display <NUM> is being extended (S20).

The content <NUM> (see <FIG>) may mean an image displayable on a screen through the display <NUM>.

The content <NUM> may be a broadcast image received by the control unit <NUM> through the broadcast receiving unit <NUM>, an external device image received by the control unit <NUM> through the external device interface unit <NUM>, or an image stored in the storage unit <NUM>. This is only an example, and the content <NUM> may mean any content that can be displayed on the display <NUM>, such as pictures, photos, images, and applications.

The control unit <NUM> may reduce the size of the content <NUM> such that the entire content <NUM> is displayed on the extended display <NUM> while the display <NUM> is being extended.

According to an embodiment, the control unit <NUM> may control the display <NUM> such that the image size of the content <NUM> increases while the image ratio of the content <NUM> is being maintained when the display <NUM> is being extended. The image ratio being maintained may mean that the horizontal-vertical ratio of the image is kept constant, and the image size increasing may mean that the size of the image also increases as the area of the extended display <NUM> increases. In this case, the size of the image may increase in proportion to the extent to which the display <NUM> is extended, but it does not mean only that the image size increases proportionally.

Specifically, a method of displaying the entire content <NUM> in the display <NUM> according to an embodiment of the present disclosure will be described with reference to <FIG>.

<FIG> is an exemplary diagram showing an example of a method of displaying entire content in a display apparatus according to an embodiment of the present disclosure.

According to an embodiment of the present disclosure, when a part of the display <NUM> is extended by L1 as shown in (A) of <FIG>, the control unit <NUM> may control the display <NUM> such that the entire content <NUM> is displayed in a reduced size. According to an embodiment, as shown in (B) of <FIG>, the control unit <NUM> may control the display <NUM> such that the image size of the content <NUM> is increasing gradually while the image ratio of the content <NUM> is maintained when the display <NUM> is being extended by L2. In this case, the image ratio of the displayed content <NUM> in a state in which the display <NUM> is extended by L1 may be identical to the image ratio of the displayed content <NUM> in a state in which the display <NUM> is extended by L2, and the image size of the content <NUM> displayed in a state in which the display <NUM> is extended by L1 may be smaller than the image size of the content <NUM> displayed in a state in which the display <NUM> is extended by L2.

On the other hand, as shown in (C) of <FIG>, the control unit <NUM> may control the display <NUM> such that the image ratio of the content <NUM> is maintained and the image size of the content <NUM> is displayed as in (B) of <FIG> while the display <NUM> is being extended by L3. In this case, the control unit <NUM> may further display a menu <NUM> (see <FIG>) in a remaining area, which will be described with reference to <FIG>.

According to another embodiment, unlike the example of <FIG>, the control unit <NUM> may adjust the size of the content <NUM> such that the entire content <NUM> is displayed on the display <NUM> regardless of the image ratio of the content <NUM> and display the content <NUM> on the display <NUM>.

That is, the method of displaying the content <NUM> is not limited to the example shown in <FIG>.

Next, another example of a method of displaying the entire content <NUM> in a display apparatus according to an embodiment of the present disclosure will be described with reference to <FIG>.

<FIG> is another exemplary diagram showing an example of a method of displaying entire content in a display apparatus according to an embodiment of the present disclosure.

Referring to the example of <FIG>, the control unit <NUM> may increase the size of the content <NUM> based on the extended length of the display <NUM> when increasing the size of the content <NUM>.

For example, as shown in (A) and (B) of <FIG>, the control unit <NUM> may control the display <NUM> to display the content <NUM> such that the image size of the content <NUM> increases to the maximum size according to the extended length of the display <NUM> while the image ratio of the content <NUM> is maintained when the extended length of the display <NUM> increases from L1 to L2. In addition, as shown in (C) of <FIG>, the control unit <NUM> may control the display <NUM> to display the content <NUM> such that the image size of the content <NUM> increases to the maximum size according to L3 while the extended length of the display <NUM> increases by L3.

According to the embodiment, an image of the maximum size that can be displayed through the display <NUM> may be provided while the image ratio is maintained when the display <NUM> is being extended.

Meanwhile, the display apparatus <NUM> according to an embodiment of the present disclosure may change a method or scheme of displaying the content <NUM> according to the extended length of the display <NUM>.

Next, a method of displaying the content <NUM> according to the extended length in the display apparatus <NUM> according to an embodiment of the present disclosure will be described with reference to <FIG>.

<FIG> is an exemplary view illustrating a method for displaying content in a display apparatus according to an embodiment of the present disclosure.

When the extended length L1 of the display <NUM> is less than or equal to a preset first length in a case in which the display <NUM> displays the content <NUM>, the control unit <NUM> may control the display <NUM> such that the content <NUM> is displayed in the form of a list.

For example, in (A) of <FIG>, the control unit <NUM> may convert the content <NUM> into text information, and control the display <NUM> to display text information in the form of a list. In this case, the control unit <NUM> may convert the content <NUM> into text information by itself and display text information in the form of a list, or may receive text information and display the text information in the form of a list. In this case, as the extended length L of the display <NUM> increases, items may be added to the list. For example, two items of the list displayed as the content <NUM> may be displayed as shown in (A) of <FIG>, and then the number of items in the list may increase to three or more according to the extension of the display <NUM>.

In addition, as shown in (B) of <FIG>, when the extended length L2 of the display <NUM> is greater than a preset first length and less than or equal to a second length longer than the first length, the control unit <NUM> may control the display <NUM> to display the content <NUM> in the form of a thumbnail.

For example, as shown in (B) of <FIG>, the control unit <NUM> may control the display <NUM> to display the content <NUM> in the form of a thumbnail.

Next, when the extended length L3 of the display <NUM> is greater than a preset second length and less than or equal to a third length longer than the second length, the control unit <NUM> may control the display <NUM> to display the content <NUM> in a full screen form.

For example, as shown in (C) of <FIG>, the control unit <NUM> may control the display <NUM> to display the content <NUM> provided by an application in a full screen form. In this case, the full screen form may mean a basic display form of the content <NUM>.

Also, when the content <NUM> is displayed in the form of a list or thumbnail, the control unit <NUM> may control the display <NUM> to preferentially display user preference information.

For example, when the control unit <NUM> displays the content <NUM> in the form of a list as shown in (A) of <FIG>, the control unit <NUM> may may control the display <NUM> to display the user preference information first and further display posterior information according to the extension of the display <NUM>.

In the above-described embodiment, the control unit <NUM> may control the size and image ratio of the content <NUM> such that the entire content <NUM> is displayed until the display <NUM> is extended to a target length according to a command to extend the display <NUM>. In this case, the target length may vary depending on the type of the command to extend the display <NUM>.

The display apparatus <NUM> according to an embodiment of the present disclosure may further display a menu <NUM> on the extended display <NUM> while the display <NUM> is being extended. That is, the display apparatus <NUM> may display the content <NUM> and the menu <NUM> together while the display <NUM> is being extended.

The menu <NUM> may mean an icon or a collection of icons for receiving a control command of the display apparatus <NUM>.

For example, the menu <NUM> may include icons for allowing a user to select information to be displayed on the display <NUM> such as an application icon <NUM>, a program icon <NUM>, and an external device icon <NUM>. In addition, the menu <NUM> may include an application providing information such as a clock application or a weather application.

Next, a method of further displaying the menu <NUM> on the extended display <NUM> in the display apparatus <NUM> according to an embodiment of the present disclosure will be described with reference to <FIG>.

<FIG> is a flowchart illustrating a method for displaying content and a menu together in a display apparatus according to an embodiment of the present disclosure.

When the control unit <NUM> receives the command to extend the display <NUM>, the control unit <NUM> may display the entire content <NUM> on the extended display <NUM> while the display <NUM> is being extended (S20).

Steps S10 and S20 are the same as those described with reference to <FIG>, and thus redundant descriptions will be omitted.

The control unit <NUM> may further display a menu <NUM> on the extended display <NUM> while the display <NUM> is being extended (S22).

The control unit <NUM> may control the display <NUM> such that the menu <NUM> is displayed in an area other than the content <NUM>, or the menu <NUM> is displayed in an overlapping manner on the content <NUM>.

Next, a method of further displaying the menu <NUM> in the display apparatus <NUM> according to an embodiment of the present disclosure will be described with reference to <FIG>.

<FIG> is an exemplary view illustrating a method for further displaying a menu in a display apparatus according to an embodiment of the present disclosure.

The control unit <NUM> may control the display <NUM> such that the menu <NUM> is displayed together with the content <NUM> of a first size when the display <NUM> is extended by L1 as shown in <FIG>, control the display <NUM> such that the menu <NUM> is displayed together with the content <NUM> of a second size when the display <NUM> is extended by L2 as shown in <FIG>, and control the display <NUM> such that the menu <NUM> is displayed together with the content <NUM> of a third size when the display <NUM> is extended by L3 as shown in <FIG>.

In this case, the first size may be smaller than the second size, and the second size may be smaller than the third size. In addition, the vertical length of the first size may be equal to L1 which is the extended length of the display <NUM>, or smaller than L1 by a predetermined size, the vertical length of the second size may be equal to L2 which is the extended length of the display <NUM>, or smaller than L2 by a predetermined size, and the vertical length of the third size is equal to L3 which is the extended length of the display <NUM>, or smaller than L3 by a predetermined size.

In the example of <FIG>, the control unit <NUM> may display the menu <NUM> in an area other than the content <NUM> of the first size in the extended display <NUM>. In the example of <FIG>, the control unit <NUM> may display the menu <NUM> in an area other than the content <NUM> of the second size in the extended display <NUM>. In the example of <FIG>, the control unit <NUM> may display the menu <NUM> in an area other than the content <NUM> of the third size in the extended display <NUM>. Accordingly, the control unit <NUM> may control the display <NUM> such that the menu <NUM> is displayed while a display position or arrangement method of the menu <NUM>, the number or size of the icons, or the like is being changed as the size of the content <NUM> changes.

In this way, the control unit <NUM> may control display <NUM> such that the display form of the menu <NUM> is changed in an area other than the content <NUM> while increasing the size of the content <NUM> according to the extended length of the display <NUM>, when the display <NUM> is being extended.

As described above, when the menu <NUM> is displayed on the remaining area of the display <NUM> as the size of the content <NUM> increases, it is possible to provide information using an empty space that may occur as the image ratio of the content <NUM> is maintained.

Referring again to <FIG>, the control unit <NUM> may receive an input signal for selecting any one icon in the menu <NUM> (S24).

Any one icon in the menu <NUM> means one of the icons for which the user selects information to be displayed through the display <NUM>, such as the application icon <NUM>, the program icon <NUM>, and the external device icon <NUM>.

When the control unit <NUM> receives an input signal for selecting any one icon in the menu <NUM> (S24), the control unit <NUM> may control the display <NUM> such that the display <NUM> switches to and displays a sub-menu <NUM> corresponding to a received icon selection signal or the content <NUM> corresponding to the received icon selection signal.

Hereinafter, an input signal for selecting any one icon in a menu is referred to as an icon selection signal.

The icon selection signal may be an input signal for controlling the sub-menu <NUM> to be displayed according to the type of a selected icon, or an input signal for controlling the content <NUM> being displayed to be changed.

First, a method of operating the display apparatus <NUM> when the icon selection signal is an input signal for controlling the sub-menu <NUM> to be displayed will be described.

The sub-menu <NUM> may mean a collection of icons for receiving an additional input signal when the additional input signal is required to control the display apparatus <NUM> as a result of receiving the icon selection signal.

For example, the sub-menu <NUM> of the application icon <NUM> is a collection of application icons that can be currently executed on the display apparatus <NUM> among applications, such as a video sharing application icon <NUM> and a TV replay application icon <NUM> and the like.

The sub-menu <NUM> of the program icon <NUM> may mean a collection of icons that provide program information and additional channel information, such as a channel information icon <NUM> or a channel list icon <NUM>.

The sub-menu <NUM> of the external device icon <NUM> may mean a collection of external device icons connected to the display apparatus <NUM>, such as an HDMI icon <NUM>, a smartphone icon <NUM>, and the like.

However, the above-described sub-menus <NUM> are merely exemplary, and there are various sub-menus according to the types of icons.

When the icon selection signal is an input signal for controlling the sub-menu <NUM> to be displayed, the control unit <NUM> may control the display <NUM> to display the sub-menu <NUM> instead of the currently displayed menu <NUM> (S26). Also, the control unit <NUM> may control the display <NUM> to display the sub-menu <NUM> of the selected icon while displaying the currently displayed menu <NUM> as it is.

Next, a method of operating the display apparatus when the icon selection signal is an input signal for controlling the sub-menu <NUM> to be displayed will be described with reference to <FIG>.

<FIG> and <FIG> are exemplary views illustrating a method of operating a display apparatus when the display apparatus receives an input signal for selecting a sub-menu according to an embodiment of the present disclosure.

When the control unit <NUM> receives an input signal for selecting the application icon <NUM> as shown in (A) of <FIG>, the control unit <NUM> may determine whether there is a sub-menu <NUM> of the application icon <NUM>. When there is the sub-menu <NUM> of the application icon <NUM>, the control unit <NUM> may control the display <NUM> to display a video sharing application icon <NUM> and a TV replay application icon <NUM>, which are the sub-menus <NUM> of the application icon <NUM> as shown in (B) of <FIG>. In this case, the control unit <NUM> may display the program icon <NUM> and the external device icon <NUM> among the menu <NUM> being displayed as they are. The video sharing application icon <NUM> and the TV replay application icon <NUM>, which are sub-menus <NUM> of the application icon <NUM>, are merely examples, and sub-menus <NUM> of the application icon <NUM> may be changed according to the type of application that can be executed on the display apparatus <NUM>.

Furthermore, when the control unit <NUM> receives an input signal for selecting the program icon <NUM> as shown in (A) of <FIG>, the control unit <NUM> may determine whether there is a sub-menu <NUM> of the program icon <NUM>. When there is the sub-menu <NUM> of the program icon <NUM>, the control unit <NUM> may control the display <NUM> to display the channel list icon <NUM>, which is the sub-menu <NUM> of the program icon <NUM>, as shown in (B) of <FIG>.

That is, according to an embodiment, when displaying the sub-menu <NUM> of the selected icon, the control unit <NUM> may control display <NUM> such that the remaining unselected icons are displayed as they are, as in the example of <FIG>, or the remaining unselected icons are not displayed as in the example of <FIG>.

As described above, the method of displaying the sub-menu <NUM> in the display apparatus <NUM> according to an embodiment of the present disclosure may be different for each icon.

Also, the method of displaying the sub-menu <NUM> in the display apparatus <NUM> according to an embodiment of the present disclosure may be different depending on the extended length of the display <NUM>.

Next, a method of displaying the sub-menu <NUM> in different manners according to the extended length of the display <NUM> in the display apparatus <NUM> according to an embodiment of the present disclosure will be described with reference to <FIG>.

<FIG> is an exemplary diagram showing a method of displaying a sub-menu in different manners according to the extended length of the display.

For example, as shown in (A) of <FIG>, when the extended length of the display <NUM> is L1, and L1 is less than or equal to a preset length, the sub-menu <NUM> of the program icon <NUM> may be a channel information icon <NUM>. That is, when the control unit <NUM> receives a command to select the program icon <NUM> while the extended length of the display <NUM> is less than or equal to a preset length, the control unit <NUM> may display the channel information icon <NUM> as the sub-menu <NUM> of the program icon <NUM>. The channel information icon <NUM> may mean display of information related to a program, such as channel information, broadcaster information, a broadcast program name, and a broadcast time of the content <NUM> being displayed on the display <NUM>.

On the other hand, as shown in (B) of <FIG>, when the extended length of the display <NUM> is L2, and L2 is greater than the preset length, the sub-menu <NUM> of the program icon <NUM> may be a channel list icon <NUM>. When the control unit <NUM> receives a command to select the program icon <NUM> while the extended length of the display <NUM> is greater than the preset length, the control unit <NUM> may display the channel list icon <NUM> as the sub-menu <NUM> of the program icon <NUM>. The channel list icon <NUM> may mean display of a list of currently aired programs and other channels in the form of thumbnails.

As described above, the method of displaying the sub-menu <NUM> in the display apparatus <NUM> according to an embodiment of the present disclosure may be different according to the extended length of the display <NUM>. That is, the display apparatus <NUM> may display the sub-menu <NUM> including more information as the extended length is longer.

Next, a case in which the icon selection signal is an input signal for changing the content <NUM> will be described.

Referring again to <FIG>, when the icon selection signal is an input signal for changing the content <NUM>, the control unit <NUM> may control the display <NUM> to switch into and display the content <NUM> corresponding to the received icon selection signal.

The input signal for switching the content <NUM> may mean an input signal for switching and displaying the content <NUM> being currently displayed through the display <NUM>.

For example, when the icon selection signal received by the control unit <NUM> is another channel selection signal of the channel list icon <NUM>, the control unit <NUM> may recognize the input signal as a channel change signal for the content <NUM> being currently displayed through the display <NUM>. That is, the control unit <NUM> may control the display <NUM> to switch into and display the content <NUM> of a selected channel, instead of the content <NUM> being currently displayed.

In addition, when the icon selection signal received by the control unit <NUM> is a signal for selecting the video sharing application icon <NUM>, the control unit <NUM> may recognize the input signal as an input signal for switching the content <NUM> being currently displayed through the display <NUM> into content <NUM> corresponding to the video sharing application. That is, the control unit <NUM> may control the display <NUM> to switch into and display the content <NUM> corresponding to the selected video sharing application, instead of the content <NUM> being currently displayed.

Next, a method of operating the display apparatus <NUM> when an input signal for switching the content <NUM> is received will be described with reference to <FIG>.

<FIG> is an exemplary diagram illustrating a method of operating a display apparatus when an input signal for switching content is a channel switch signal.

As shown in (A) of <FIG>, in a case where the content <NUM> being displayed on the display <NUM> is content <NUM> being transmitted on channel "AAA", when an icon selection signal received by the control unit <NUM> is a selection signal for channel "BBB", which is another channel among the channel list icons <NUM>, the control unit <NUM> may recognize the input signal as a channel change signal for the content <NUM> being currently displayed through the display <NUM>. That is, as shown in (B) of <FIG>, the control unit <NUM> may control display <NUM> to switch into and display the content <NUM> of channel "BBB", which is the selected channel, instead of the content <NUM> of <FIG> that was being displayed. In addition, even when the channel information icon <NUM> is displayed as shown in <FIG> according to the extended length of the display <NUM>, the control unit <NUM> may change the content <NUM> according to an input signal for up, down, left, and right keys of the remote control device <NUM>.

<FIG> is an exemplary diagram illustrating a method of operating a display apparatus when an input signal for switching content is a signal for switching into an external device image.

The external device image is an image input from an external device as shown in (A) of <FIG>, a mirroring image of an external device as shown in (B) of <FIG>, or a thumbnail indicating a file stored in an external device as shown in (C) of <FIG>.

As shown in (A) of <FIG>, when the icon selection signal received by the control unit <NUM> is the HDMI icon <NUM> selection signal, the control unit <NUM> may recognize the input signal as an input signal for switching the content <NUM> being currently displayed through the display <NUM> to the content <NUM> corresponding to the image of the external device connected to HDMI, and control the display <NUM> to switch into and display the content <NUM> of the external device connected to HDMI, instead of the content <NUM> being currently displayed.

Also, as shown in (B) of <FIG>, when the icon selection signal received by the control unit <NUM> is the smartphone icon selection signal for a smartphone connected to the display apparatus <NUM>, the control unit <NUM> may recognize the input signal as an input signal for switching the content <NUM> being currently displayed through the display <NUM> to content <NUM> corresponding to the image of the smartphone connected to the display apparatus <NUM>, and control the display <NUM> to switch into and display the content <NUM> which is the mirroring image of the smartphone connected to the display apparatus <NUM>, instead of the content <NUM> being currently displayed.

As shown in (C) of <FIG>, when the icon selection signal received by the control unit <NUM> is the USB icon <NUM> selection signal, the control unit <NUM> may recognize the input signal as an input signal for switching the content <NUM> being currently displayed through the display <NUM> to the content <NUM> corresponding to the image of the external device connected to a USB port, and control the display <NUM> to switch into and display the content <NUM> of the external device connected to the USB port, instead of the content <NUM> being currently displayed.

In the above-described embodiment, the display apparatus <NUM> according to the present disclosure may switch and display the content <NUM> in response to the icon selection signal while the display <NUM> is being extended.

The size, position, and arrangement of the menu <NUM> or sub-menu <NUM> and the content <NUM> shown in the drawings are not fixed, and do not affect the scope of the present disclosure.

Returning again to <FIG>, when receiving an extension stop command (S30), the control unit <NUM> may control the display <NUM> to stop extension of the display <NUM> (S40).

In this case, the extension stop command for the display <NUM> may include an icon selection signal, an extension stop command by a user, a stop command according to the maximum extension of the display <NUM>, and the like.

For example, the control unit <NUM> may recognize the icon selection signal as the extension stop command for the display <NUM>. In this case, the control unit <NUM> may control a roller <NUM> to stop extension of the display <NUM> immediately or to stop extension of the display <NUM> after the display <NUM> is extended to a preset length. The preset length may mean a length that is <NUM>% of the maximum length of the display <NUM>, but this is only given as an example for convenience of description.

In addition, when the extension of the display <NUM> is stopped before the display <NUM> is extended to the maximum length, the control unit <NUM> may control the display <NUM> to display a screen indicating extension stop of the display <NUM>.

<FIG> is an exemplary diagram illustrating a method of receiving a maximum extension command when the extension of the display apparatus is stopped before being extended to a maximum length according to an embodiment of the present disclosure.

For example, when the extension of the display is stopped before reaching the maximum extension length of the display <NUM>, the control unit <NUM> may control the display <NUM> to display a screen indicating extension stop as shown in (A) of <FIG>.

The screen indicating extension stop may be a screen indicating that extension is stopped before reaching the maximum extension length of the display <NUM>. The screen indicating extension stop may include a full screen icon <NUM>. The full screen icon <NUM> may mean an icon for receiving a command to display only the currently displayed content <NUM> excluding the menu <NUM> on the display <NUM>. The full screen icon <NUM> may mean an icon for selecting whether to extend the display <NUM> to the maximum length while displaying only the currently displayed content <NUM> on the display <NUM>.

That is, when the control unit <NUM> receives a command to select the full screen icon <NUM>, the control unit <NUM> may recognize it as receiving the maximum extension command for the display <NUM>.

In addition, the control unit <NUM> may recognize that the maximum extension command is received even when no user input is detected for more than a predetermined time in a state in which extension is stopped at a preset length before the display <NUM> reaches the maximum extension length. For example, when the extension is stopped because the extended length of the display <NUM> reaches <NUM>% of the maximum extension length, the control unit <NUM> may control the roller <NUM> such that the display <NUM> is extended to the maximum extension length if no user input is detected for more than the predetermined time.

Accordingly, when receiving the maximum extension command, the control unit <NUM> may extend the display <NUM> to the maximum extension length as shown in (B) <FIG> and control the display <NUM> to display only the content <NUM> on the display <NUM>. In this case, L2 may be a length corresponding to <NUM>% of the maximum extension length, and L4 may be the maximum extension length of the display <NUM>.

Meanwhile, according to an embodiment of the present disclosure, while the display <NUM> is being extended, the position or arrangement of icons in the menus displayed on the display <NUM> may be changed. In this case, when a user tries to select an icon, it may be difficult for the user to select a desired icon due to a change in the position or arrangement of the icons.

According to an embodiment of the present disclosure, when the pointer <NUM> is located on any one icon, the control unit <NUM> may control the display <NUM> to allow the position of the pointer <NUM> to be fixed on the icon while the display <NUM> is extended or display an icon on which the pointer <NUM> is located to be fixed.

Next, a method of fixing the position of the pointer <NUM> and displaying the pointer <NUM> while the display <NUM> is being extended will be described with reference to <FIG>.

<FIG> is an exemplary diagram illustrating a method of displaying an icon and a pointer positioned on the icon in a display apparatus according to an embodiment of the present disclosure.

For example, as shown in (A) of <FIG>, when the pointer <NUM> is located on any one icon in the menus, the position and arrangement of the icons may be changed as shown in (B) of <FIG>, as the extended length of the display <NUM> increases from L1 to L2. In this case, the control unit <NUM> may control the display <NUM> to change of the position of the pointer <NUM> and display the pointer <NUM>. That is, the control unit <NUM> may recognize an icon being displayed in an area where the pointer <NUM> is located, and control the display <NUM> such that the pointer <NUM> is located on the recognized icon even when the position of the recognized icon is changed.

For example, when the pointer <NUM> is located on the external device icon <NUM> as shown in (A) of <FIG>, the control unit <NUM> may control the display <NUM> such that the pointer <NUM> is located and displayed on the external device icon <NUM> even when the position and arrangement of the icons are changed as shown in (B) of <FIG>.

On the other hand, as another example, even when the position of the icon is changed according to the extension of the display <NUM> as shown in (C) of <FIG>, the control unit <NUM> may control the display <NUM> to fix the position of the displayed pointer <NUM> and display the pointer <NUM>.

On the other hand, when the pointer <NUM> is located on any one icon in the menu, the control unit <NUM> may control the display <NUM> such that the position of the icon is fixed and the icon is displayed according to the extension of the display <NUM>.

Next, a method of fixing and displaying an icon on which the pointer <NUM> is located while the display <NUM> is being extended will be described with reference to <FIG>.

As shown in (A) of <FIG>, when a pointer <NUM> is positioned on any one icon in a menu, the position of the icon may be changed according to the extension of the display <NUM>.

In this case, the control unit <NUM> may control the display <NUM> to display the icon at a fixed position as shown in (B) of <FIG>.

When the icon is fixed, the position or size of the content <NUM> may be adjusted according to the fixed icon position.

According to this embodiment, it is possible to provide the display apparatus <NUM> capable of allowing a user to easily perform selection when the user tries to select an icon displayed on the display <NUM> while the display <NUM> is being extended.

According to another embodiment of the present disclosure, it is possible to provide the display apparatus <NUM> capable of allowing the user to grasp the contents of the content <NUM> even when only a part of the content <NUM> is displayed while the display <NUM> is being extended.

The display apparatus <NUM> according to the embodiment of the present disclosure may control a manner for displaying the content <NUM> so as to allow the user to grasp the contents of the content <NUM> even when only a part of the content <NUM> is displayed while the display <NUM> is being extended.

For example, the control unit <NUM> may display a main part of the content <NUM> first while the display <NUM> is being extended.

The main part of the content <NUM> may mean a partial part of the content <NUM> that enables the user to immediately grasp the contents of the content <NUM> even when the entire content <NUM> is not displayed.

The main part of the content <NUM> may be different depending on the type of the content <NUM>. For example, when the content <NUM> is a news image, a main part may be a subtitle, and when the content <NUM> is a drama, the main part may be an actor/actress's face.

The control unit <NUM> may determine a main part of the content <NUM> being displayed, and control the display <NUM> such that the main part is displayed first in an extended portion of the display <NUM>.

Next, a method of controlling the display form of content <NUM> in the display apparatus <NUM> will be described with reference to <FIG>.

<FIG> is an exemplary diagram illustrating a method of controlling a display form of content in a display apparatus according to an embodiment of the present disclosure.

For example, when the content <NUM> being displayed on the display <NUM> is a news image, the control unit <NUM> may determine the subtitle of the content <NUM> as a main part. In this case, when the display <NUM> is extended by L1 as shown in (A) of <FIG>, the control unit <NUM> may control the display <NUM> to sequentially display the subtitles of the content <NUM> in the extended area. When the display <NUM> is additionally extended by L2 as shown in (B) of <FIG>, the control unit <NUM> may control the display <NUM> to additionally display parts other than the subtitles of the content <NUM> according to the additionally-extended length of the display <NUM>. When the display <NUM> is additionally extended by L3 as shown in (C) of <FIG> and L3 is the maximum extended length of the display <NUM>, the control unit <NUM> may control the display <NUM> to display the entire content <NUM>.

According to the embodiments described above, it is possible to provide the display apparatus <NUM> capable of allowing a user to grasp the contents of the content <NUM> even when the display <NUM> is not fully extended.

Each of the embodiments disclosed herein may be practiced alone, or may be practiced in combination with other embodiments.

The above description is merely illustrative of the technical idea of the present disclosure, and various modifications and variations may be made without departing from the essential characteristics of the present disclosure by those skilled in the art to which the present disclosure pertains.

Claim 1:
A display apparatus (<NUM>) comprising:
a housing (<NUM>);
a display (<NUM>);
a roller (<NUM>) accommodated in the housing to rotate to roll or unroll the display; and
a control unit (<NUM>) configured to
control (S20) the display (<NUM>) such that an entire content (<NUM>) is displayed on the display extended from the housing while the display (<NUM>) is being extended from the housing (<NUM>), and
control (S22) the display (<NUM>) to display a menu (<NUM>) which includes at least one icon (<NUM>, <NUM>, <NUM>, <NUM>, <NUM>) to select selectable information to be displayed on the display extended from the housing,
characterised in that the control unit (<NUM>) is further configured to:
control (S40) the roller (<NUM>) to stop the extension of the display (<NUM>) when an input signal for selecting any one of the at least one icon (<NUM>, <NUM>, <NUM>) is received (S24) while the display is being extended from the housing.