Patent Application
20150067540
This application claims priority from Korean Patent Application No. 10-2013-0104965, filed on Sep. 2, 2013 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.
1. Field
Methods and apparatuses consistent with the exemplary embodiments relate to a display apparatus, a portable device and screen display methods thereof, and more particularly to a display apparatus, a portable device and screen display methods which enable mutual sharing of a screen.
2. Description of the Related Art
In recent years, portable devices, including smartphones and tablet personal computers (PCs), which provide a variety of extended services and functions have been developed, and are used widely. For example, technologies which enable one portable device to share data, such as music and videos, with other portable devices or enable one portable device to control other portable devices, for example, to play back a video, have been developed in response to the improvement of wireless networks and diverse user demands. Accordingly, there are increasing demands for techniques for sharing data between a plurality of portable devices or between a portable device and a communal control device, or techniques for displaying a screen on a main controller or another portable device for controlling a portable device and using the screen displayed on the other portable device.
Further, as interests in building a smart education environment using an interactive whiteboard and portable equipment rise, demands for the interactive whiteboard and portable equipment also increase accordingly. However, inconvenience in manipulating the equipment may interrupt a class and thus improvement in manipulation is increasingly needed.
An aspect of one or more exemplary embodiments provides a screen display method of a display apparatus connectable to a portable device, the method comprising: displaying a collaborative screen comprising a plurality of operation areas on the display apparatus; allocating at least one of the operation areas to the portable device; displaying the collaborative screen with the allocated operation area; and giving a notification so that the allocated operation area is displayed on a corresponding portable device.
The method may further comprise storing collaborative screen information including information on the allocated operation area.
The collaborative screen information may be stored in a storage of the display apparatus or a server connectable to the display apparatus.
The method may further comprise receiving operation information on the collaborative screen from the portable device, and updating the stored collaborative screen information based on the received operation information.
The method may further comprise setting a size of the collaborative screen, and generating the collaborative screen with the set size.
According to an aspect of the exemplary embodiment, the operation area may be allocated to a plurality of portable devices, and a plurality of users corresponding to the portable devices may be included in one group.
The method may further comprise detecting a user touch on a screen of a touchscreen of the display apparatus, and controlling the collaborative screen corresponding to the touch.
According to an aspect of the exemplary embodiment, the controlling of the collaborative screen may include enlarging or reducing the collaborative screen on the display corresponding to a zoom in/out manipulation when the user touch is the zoom in/out manipulation using a multi-touch operation.
According to an aspect of the exemplary embodiment, the controlling of the collaborative screen may include moving the collaborative screen on the display corresponding to a moving direction of the user touch when the user touch is a flick or a drag.
According to an aspect of the exemplary embodiment, the controlling of the collaborative screen comprises moving or copying an operation area set in a first location to a second location when the user touch is a drag and drop of the operation areas from the first location to the second location different from the first location.
According to an aspect of the exemplary embodiment, the operation area set in the first location may be copied to the second location when the user touch is a drag and drop from the first location to the second location while holding the touch at the first location.
According to an aspect of the exemplary embodiment, the controlling of the collaborative screen may comprise displaying a first area as a full screen of the display apparatus when the user touch is a tap on the first area among the operations areas.
According to an aspect of the exemplary embodiment, the method may further comprise displaying the collaborative screen including the operation areas on the display apparatus when a menu at a preset location is selected in the first area displayed as the full screen.
Another aspect of one or more exemplary embodiments provides a screen display method of a portable device connectable to a display apparatus and another portable device, the method comprising: displaying a collaborative screen including a plurality of operation areas on the portable device; allocating at least one of the operation areas to the other portable device; displaying the collaborative screen with the allocated operation area being distinguishable; and giving notification so that the allocated operation area is displayed on the corresponding other portable device.
According to an aspect of the exemplary embodiment, the method may further include transmitting collaborative screen information including information on the allocated operation area.
According to an aspect of the exemplary embodiment, the collaborative screen information may be transmitted to the display apparatus or a server managing the collaborative screen information.
According to an aspect of the exemplary embodiment, the method may further comprise receiving operation information on the collaborative screen, updating the pre-stored collaborative screen information based on the received operation information, and transmitting the updated collaborative screen information.
According to an aspect of the exemplary embodiment, the method may further comprise setting a size of the collaborative screen, and generating the collaborative screen with the set size.
According to an aspect of the exemplary embodiment, the operation area may be allocated to a plurality of other portable devices, and a plurality of users corresponding to the portable devices may be included in one group.
According to an aspect of the exemplary embodiment, the method may further comprise detecting a user touch on a touchscreen of the portable device, and controlling the collaborative screen corresponding to the detected user touch.
According to an aspect of the exemplary embodiment, the controlling of the collaborative screen may comprise enlarging or reducing the collaborative screen on a display corresponding to a zoom in/out manipulation when the user touch is the zoom in/out manipulation using a multi-touch.
According to another aspect of the exemplary embodiment, the controlling of the collaborative screen may comprise moving the collaborative screen on the display corresponding to a moving direction of the user touch when the user touch is a flick or a drag.
According to an aspect of the exemplary embodiment, the controlling of the collaborative screen may include moving or copying an operation area set in a first location to a second location when the user touch is a drag and drop of the operation areas from the first location to the second location different from the first location.
According to another aspect of the exemplary embodiment, the operation area set in the first location may be copied to the second location when the user touch is a drag and drop operation from the first location to the second location while holding the touch at the first location.
According to another aspect of the exemplary embodiment, the controlling of the collaborative screen may include displaying a first area as a full screen of the touch screen when the user touch is a tap on the first area among the operations areas.
According to an aspect of the exemplary embodiment, the method may further include reducing the screen on the display so that part of the operation areas adjacent to the first area is displayed on the touchscreen when a back operation is selected from a menu at a location of the first area displayed as the full screen.
According to an aspect of the exemplary embodiment, the method may further comprise receiving a user input on a second area among the operation areas, selecting a menu icon disposed at a location of the screen of the touch screen, and registering the second area as a bookmark.
According to an aspect of the exemplary embodiment, the method may further include displaying a plurality of bookmark items corresponding to the selecting of the menu icon, and the registering as the bookmark may comprise conducting a drag operation from the menu icon to one of the bookmark items.
According to another aspect of the exemplary embodiment, the method may further comprise selecting the menu icon disposed at a location of the screen of the touch screen, displaying the plurality of bookmark items corresponding to the selecting of the menu icon, selecting one of the displayed bookmark items, and displaying an operation area corresponding to the selected bookmark item on the screen of the touchscreen.
According to an aspect of the exemplary embodiment, the method may further comprise receiving a user input on a third area among the operation areas, detecting that a front side and a rear side of the portable device are overturned, and transmitting a command to lock the third area.
According to an aspect of the exemplary embodiment, the method may further comprise receiving a user input on a fourth area among the operation areas, detecting that the transmission of light to a luminance sensor of the portable device is blocked, and transmitting a command to hide the fourth area.
The foregoing and/or other aspects may be achieved by providing a display apparatus connectable to a portable device, the display apparatus comprising: a communication device configured to conduct communications with an external device; a display configured to display a collaborative screen comprising a plurality of operation areas; an input configured to allocate at least one of the operation areas to the portable device; and a controller configured to control the display to display the collaborative screen with the allocated operation area being distinguishable and configured to control the communication device to give a command to display the allocated operation area on a corresponding portable device.
According to an aspect of the exemplary embodiment, the display apparatus may further comprise a storage configured to store collaborative screen information including information on the allocated operation area.
According to an aspect of the exemplary embodiment, the communication device is configured to receive operation information on the collaborative screen from the portable device, and the controller is configured to update the collaborative screen information stored in the storage based on the received operation information.
According to an aspect of the exemplary embodiment, the controller is configured to control the communication device to transmit the collaborative screen information including the information on the allocated operation area to a server connectable to the display apparatus.
According to an aspect of the exemplary embodiment, the input is configured to receive a set size of the collaborative screen, and the controller is configured to generate the collaborative screen with the set size.
According to an aspect of the exemplary embodiment, the operation area may be allocated to a plurality of portable devices, and a plurality of users corresponding to the portable devices may be included in one group.
According to an aspect of the exemplary embodiment, the controller is configured to detect a user touch on a touchscreen of the display and is configured to control the display to control the collaborative screen corresponding to the touch.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to enlarge or reduce the collaborative screen on the display corresponding to a zoom in/out manipulation when the user touch is the zoom in/out manipulation using a multi-touch operation.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to move the collaborative screen on the display corresponding to a moving direction of the user touch when the user touch is a flick operation or a drag operation.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to move or copy an operation area set in a first location to a second location when the user touch is a drag and drop of the operation areas from the first location to the second location different from the first location.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to copy the operation area set in the first location to the second location when the user touch is a drag and drop from the first location to the second location while holding the touch at the first location.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to display a first area as a full screen of the display when the user touch is a tap operation on the first area among the operations areas.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to display the collaborative screen including the operation areas on the display apparatus when a menu disposed at a preset location is selected in the first area displayed as the full screen.
Another aspect of one or more exemplary embodiments provides a portable device connectable to a display apparatus and another portable device, the portable device comprising: a communication device configured to conduct communications with an external device; a display configured to display a collaborative screen including a plurality of operation areas; an input configured to allocate at least one of the operation areas to the portable device; and a controller configured to control the display to display the collaborative screen with the allocated operation area being distinguishable and configured to control the communication device to give a command to display the allocated operation area on a corresponding portable device.
According to an aspect of the exemplary embodiment, the communication device is configured to transmit collaborative screen information including information on the allocated operation area.
According to an aspect of the exemplary embodiment, the collaborative screen information may be transmitted to the display apparatus or a server managing the collaborative screen information.
According to an aspect of the exemplary embodiment, the input is configured to receive operation information on the collaborative screen, and the controller is configured to control the display to update and display the pre-stored collaborative screen information based on the received operation information and configured to control the communication device to transmit the updated collaborative screen information.
According to an aspect of the exemplary embodiment, the input is configured to set a size of the collaborative screen, and the controller is configured to generate the collaborative screen with the set size.
According to an aspect of the exemplary embodiment, the operation area may be allocated to a plurality of other portable devices, and a plurality of users corresponding to the portable devices may be included in one group.
According to an aspect of the exemplary embodiment, the controller comprises a touchscreen controller configured to detect a user touch on a screen of a touchscreen of the display and configured to control the collaborative screen corresponding to the touch.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to enlarge or reduce the collaborative screen on the display corresponding to a zoom in/out manipulation when the users touch is the zoom in/out manipulation using a multi-touch.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to move the collaborative screen on display corresponding to a moving direction of the user touch when the user touch is a flick operation or a drag operation.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to move or copy an operation area set in a first location to a second location when the user touch is a drag and drop of the operation areas from the first location to the second location different from the first location.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to copy the operation area set in the first location to the second location when the user touch is a drag and drop from the first location to the second location while holding the touch at the first location.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to display a first area as a full screen of the touch screen when the user touch is a tap on the first area among the operations areas.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to reduce the screen on display so that part of operation areas adjacent to the first area is displayed on the touchscreen when a back is selected through the input from a menu disposed at a location of the first area displayed as the full screen.
According to an aspect of the exemplary embodiment, the controller is configured to register a second area as a bookmark when a user input on the second area among the operation areas is received from the input and a menu icon disposed at a location of the screen of the touch screen is selected.
According to an aspect of the exemplary embodiment, the controller is configured to display a plurality of bookmark items on the display corresponding to the selected, detect a drag operation from the menu icon to one of the bookmark items menu icon, and register the bookmark.
According to an aspect of the exemplary embodiment, the controller is configured to control the display to display the plurality of bookmark items corresponding to the selected menu icon when the menu icon disposed at the location of the screen of the touch screen is selected through the input, and control the display to display an operation area corresponding to the selected bookmark item on the screen of the touchscreen when one of the displayed bookmark items is selected through the input.
According to an aspect of the exemplary embodiment, the controller is configured to control the communication device to transmit a command to lock the operation area displayed on the display when it is detected that a front side and a rear side of the portable device are overturned.
According to an aspect of the exemplary embodiment, the controller is configured to control the communication device to transmit a command to hide the operation area displayed on the display when it is detected that transmission of light to a luminance sensor of the portable device is blocked.
The above and/or other aspects will become apparent and more readily appreciated from the following description of the exemplary embodiments, taken in conjunction with the accompanying drawings, in which:
Below, exemplary embodiments will be described in detail with reference to the accompanying drawings.
The cooperative learning system enables individual students in a classroom, or small groups of students in the classroom to work on classroom activities together, that is, to perform cooperative learning or collaborative learning as an educational method, so as to complete tasks collectively towards achieving academic goals. As shown in
The display apparatus 100 is configured as an interactive whiteboard (IWB) and displays a collaborative screen for cooperative learning on a display 130 as shown in
The display apparatus 100 is a collaborative device that monitors operations according to the cooperative learning, displays a status of the entire collaborative screen, provides an interface for managing the collaborative screen including each operation area and may provide a presentation function after a cooperative learning class.
The portable devices 300 are configured as a digital device including a tablet PC, and display an allocated operation area of the collaborative screen on a display 390, which includes a touchscreen 391 as shown in
The portable devices 300, which act as personal devices for performing cooperative work according to the cooperative learning, are allocated an operation area of the collaborative screen to manipulate and manage the operation area according to an instruction from a user, and move the operation area on the display to enable the cooperative learning.
The display apparatus 100, the teacher portable device 301 and the student portable device 302 are connected to one another via a cable or wireless communication.
As compared with the cooperative learning system of
As shown in
The server 200, as an administrator server to manage the collaborative screen, generates, modifies and deletes the collaborative screen corresponding to a user manipulation, and provides information for displaying the collaborative screen to the display apparatus 100. Also, the server 200 allocates an operation area within the collaborative screen to a personal device, that is, the portable devices 300, in a classroom. However, the location of the portable devices is not limited to classrooms. The portable devices may be utilized in other locations such as, for example, offices.
The display apparatus 100, the server 200, the teacher portable device 301 and the student portable device 302 are connected to one another via cable or wireless communication.
Information in the server 200 or a first storage 160 is stored and managed by file type and history according to a progression of cooperative learning. Thus, a teacher loads the stored information onto the display apparatus 100 or the teacher portable device 301 to look back into the progression of the cooperative learning on a time axis or to monitor each particular operation area.
In the cooperative learning system shown in
As shown in
The display apparatus 100 may be provided, for example, as a television (TV) or computer monitor including the display 130, without being limited particularly. In the present exemplary embodiment, however, the display apparatus 100 is provided as an IWB adopting a display 130 including a plurality of display panels 131 to 139 so as to realize a large-sized screen.
The display panels 131 to 139 may be disposed to stand upright against a wall or on a ground, being parallel with each other in a matrix form.
Although
In this instance, a communication device 140 in a form of a dongle or module may be mounted on the image processor 120, and the display apparatus 100 may communicate with an external device including a server 200 and a portable device 300 through the communication device 140. Further, the communication device 140 may communicate with the input device 150 so as to receive a user input through the input device 150.
However, the foregoing configuration may be changed and modified in designing the apparatus, for example, the image processor 120 and the display 130 may be accommodated in a single housing (not shown). In this case, the communication device 140 may be embedded in the housing.
As shown in
Here, the first storage 160 may store various types of information for cooperative learning as described above in the cooperative learning system of
The first storage 160 may store a graphic user interface (GUI) associated with a control program for controlling the display apparatus 100 and applications provided by a manufacturer or downloaded externally, images for providing the GUI, user information, a document, databases or relevant data. The first controller 110 may implement an operating system (OS) and a variety of applications stored in the first storage 160.
The display 130 includes a touchscreen to receive an input based on a user's touch. Here, the user's touch includes a touch made by a user's body part, for example, a finger including a thumb or a touch made by touching the input device 151. In the present exemplary embodiment, the touchscreen of the first display 130 may receive a single touch or multi-touch input. The touchscreen may include, for instance, a resistive touchscreen, a capacitive touchscreen, an infrared touchscreen and an acoustic wave touchscreen, but is not limited thereto.
The input device 150 transmits various preset control commands or information to the first controller 110 according to a user input including a touch input. The input device 150 according to the present exemplary embodiment may include the input device 150 which enables a touch input. The input device 150 may include a pointing device, a stylus, and a haptic pen with an embedded pen vibrating element, for example, a vibration motor or an actuator, vibrating using control information received from the communication device 140. The vibrating element may also vibrate using sensing information detected by a sensor (not shown) embedded in the input device 150, for instance, an acceleration sensor, instead of the control information received from the display apparatus 100. The user may select various GUIs, such as texts and icons, displayed on the touchscreen for user's selection using the input device 150 or a finger.
The first controller 110 displays the collaborative screen for cooperative learning on the touchscreen of the first display 130, and controls the first image processor 120 and the first display 130 to display an image corresponding to a user manipulation or a user touch on the displayed collaborative screen.
In detail, the first controller 110 detects a user touch on the touchscreen of the first display 130, identifies a type of a detected touch input, derives coordinate information on x and y coordinates of a touched position and forwards the derived coordinate information to the image processor 120. Subsequently, an image corresponding to the type of the touch input and the touched position is displayed by the image processor 120 on the first display 130. Here, the image processor 120 may determine a display panel, for example, panel 135, is touched by the user among the display panels 131 to 139, and displays the image on the touched display panel 135.
The user touch includes a drag, a flick, a drag and drop, a tap and a long tap. However, the user touch is not limited thereto, and other touches such as a double tap and a tap and hold may be applied.
A drag refers to a motion of the user holding a touch on the screen using a finger or the touch input device 151 while moving the touch from one location to another location on the screen. A selected object may be moved by a drag motion. Also, when a touch is made and dragged on the screen without selecting an object on the screen, the screen is changed or a different screen is displayed based on the drag.
A flick is a motion of the user dragging a finger or the touch input device 151 at a threshold speed or higher, for example, 100 pixel/s. A flick and a drag may be distinguished from each other by comparing a moving speed of the finger or the input device with the threshold speed thereof, for example, 100 pixel/s.
A drag and drop operation is a motion of the user dragging a selected object using a finger or the touch input device 150 to a different location on the screen and releasing the object. A selected object is moved to a different location by a drag and drop operation.
A tap is a motion of the user quickly touching the screen using a finger or the touch input device 151. A tap is a touching motion made with a very short gap between a moment when the finger or the touch input device 150 comes in contact with the screen and a moment when the finger or the touch input device 150 touching the screen is separated from the screen.
A long tap is a motion of the user touching the screen for a predetermined period of time or longer using a finger or the touch input device 150. A long tap is a touching motion made with a gap between a moment when the finger or the touch input device 150 comes in contact with the screen and a moment when the finger or the touch input device 150 touching the screen is separated from the screen longer than the gap of the tap. The first controller 110 may distinguish a tap and a long tap by comparing a preset reference time and a touching time (a gap between a moment of touching the screen and a moment of the touch being separated from the screen).
The foregoing user touch including a drag, a flick, a drag and drop, a tap and a long tap is also applied to a portable device 300, which will be described. A touchscreen controller 395 (
The first controller 110 displays the collaborative screen including a plurality of operation areas on the display 130, that is, the touchscreen, allocates at least one of the operation areas to a portable device of the user, for example, a portable device 302 of a student or students in a group participating in the cooperative learning, and displays the collaborative screen so that the allocated operation area is identified. The first controller 110 may control the communication device 140 to give a command to display the allocated operation area on the corresponding portable device 302.
Here, one operation area may be allocated to one portable device or may be allocated to a plurality of portable devices. When one operation area is allocated to a plurality of portable devices, a plurality of users corresponding to the portable devices may be included in a single group.
The first controller 110 may conduct first allocation of operation areas to each group including a plurality of students, and subdivide the operation areas allocated to the particular group to conduct second allocation of the operation areas to portable devices of students in the group.
Accordingly, the allocated operation areas are displayed on the portable devices 302 of the corresponding users, for example, a student or a group of a plurality of students participating in the cooperative learning. When the first and the second allocations are completed, a first allocated operation area or a second allocated operation area resulting from subdivision of the first allocated operation area may be selectively displayed on the portable device 302 of the user included in the first allocated group. The first controller 110 stores collaborative screen information including information on the allocated operation area in the first storage 160 or the server 200. To store the collaborative screen information in the server 200, the first controller 110 transmits the information to the server 200 through the communication device 140. The user, that is, a student or a teacher, may conduct an operation on the collaborative screen using the portable device thereof (the student portable device 302 or the teacher portable device 301), and the information on the conducted operation is transmitted to the display apparatus 100 or the server 200 to update the collaborative screen information previously stored in the first storage 160 or the server 200.
The first controller 110 detects a user touch on the first display 130, that is, the touchscreen, on which the collaborative screen is displayed, and controls the collaborative screen corresponding to the detected touch. For example, when the user touch is a zoom in/out manipulation using a multi-touch, the first controller 110 may control the first display to enlarge or reduce the collaborative screen corresponding to the manipulation. Here, the zoom in/out manipulation is also referred to as a pinch zoom in/out. Further, when the user touch is a flick or a drag, the first controller 110 may control the first display 130 to move and display the collaborative screen corresponding to a moving direction of the user touch. Additional exemplary embodiments of detecting the user touch and controlling the touchscreen will be described in detail with reference to the following drawings.
The display apparatus 100 may be configured to derive coordinate information on a location on the display panel 135 touched by the input device 150 among the display panels 131 to 139 and to wirelessly transmit the derived coordinate information to the image processor 120 through the communication device 140. Here, the image processor 120 displays an image on the display panel 135 touched by the input device 150 among the display panels 131 to 139.
As shown in
An application refers to software implemented on a computer version of an operating system (OS) or a mobile version of an OS and used by the user. For example, the application includes a word processor, a spreadsheet, a social networking system (SNS), a chatting application, a map application, a music player and a video player.
A widget is a small application as a GUI to ease interactions between the user and applications or the OS. Examples of the widget include a weather widget, a calculator widget and a clock widget. The widget may be installed in a form of a shortcut icon on a desktop or a portable device as a blog, a web café or a personal homepage and enables direct use of a service through a click not via a web browser. Also, the widget may include a shortcut to a specified path or a shortcut icon for running a specified application.
The application and the widget may be installed not only on the portable device 300 but on the display apparatus 100. In the present exemplary embodiment, when the user may select and execute an application, for example, an education application, installed on the portable device 300 or the display apparatus 100, a collaborative screen for cooperative learning may be displayed on the first display 130 or the second display 390.
A status bar 392 indicating a status of the portable device 300, such as a charging status of a battery, a received signal strength indicator (RSSI) and a current time, may be displayed at a bottom of the home screen 393. Further, the portable device 300 may dispose the home screen 393 above the status bar 392 or not display the status bar 392.
A first camera 351, a plurality of speakers 363a and 363b, a proximity sensor and a luminance sensor 372 may be disposed at an upper part of the front side 300a of the portable device 300. A second camera 352 and an optional flash 353 may be disposed on a rear side 300c of the portable device 300.
A home button 361a, a menu button (not shown) and a back button 361c are disposed at the bottom of the home screen 393 on the touchscreen 391 on the front side 300a of the portable device 300. A button 361 may be provided as a touch-based button instead of a physical button. Also, the button 361 may be displayed along with a text or other icons within the touchscreen 391.
A power/lock button 361d, a volume button 361e and at least one microphone may be disposed on an upper lateral side 300b of the portable device 300. A connector provided on a lower lateral side of the portable device 300 may be connected to an external device via a cable. In addition, an opening into which an input device 367 having a button 367a is inserted may be formed on the lower lateral side of the portable device 300. The input device 367 may be kept in the portable device 300 through the opening and be taken out from the portable device 300 for use. The portable device 300 may receive a user touch input on the touchscreen 391 using the input device 367, and the input device 367 is included in an input/output device 360 of
Referring to
As shown in
The sub-communication device 330 includes at least one of a wireless local area network (LAN) device 331 and a short-range communication device 332, and the second image processor 340 includes at least one of a broadcast communication device 341, an audio playback device 342 and a video playback device 343. The camera 350 includes at least one of the first camera 351 and a second camera 352, the input/output device 360 includes at least one of the button 361, the microphone 362, a speaker 363, a vibrating motor 364, the connector 365, the keypad 366 and the input device 367, and the sensor 370 includes the proximity sensor 371, the luminance sensor 372 and a gyro sensor 373.
The second controller 310 may include an application processor 311, a read only memory (ROM) to store a control program for controlling the portable device 300 and a random access memory 313 to store a signal or data input from an outside of the portable device 300 or to store various operations implemented on the portable device 300.
The second controller 310 controls general operations of the portable device and flow of signals between internal elements 320 to 395 of the portable device 300 and functions to process data. The second controller 310 controls supply of power from the power supply 380 to the internal elements 320 to 395. Further, when a user input is made or a stored preset condition is satisfied, the second controller 310 may conduct an OS or various applications stored in the second storage 375.
In the present exemplary embodiment, the second controller 310 includes the AP 311, the ROM 312 and the RAM 313. The AP 311 may include a graphic processor (not shown) to conduct graphic processing. The AP 311 may be provided as a system on chip (SOC) of a core (not shown) and the GPU. The AP 311 may include a single core, a dual core, a triple core, a quad core and multiple cores thereof. Further, the AP 311, the ROM 312 and the RAM 313 may be connected to each other via an internal bus.
The second controller 310 may control the mobile communication device 320, the sub-communication device 330, the second image processor 340, the camera 350, the GPS device 355, the input/output device 360, the sensor 370, the second storage 375, the power supply 380, the touchscreen 391 and the touchscreen controller 395.
The mobile communication device 320 may be connected to an external device using mobile communications through at least one antenna (not shown) according to control by the second controller 310. The mobile communication device 320 conducts transmission/reception of wireless signals for a voice call, a video call, a short message service (SMS), a multimedia message service (MMS) and data communications with a mobile phone, a smartphone, a tablet PC or other portable devices having a telephone number connectable to the portable device 300.
The sub-communication device 330 may include at least one of the wireless LAN device 331 and the short-range communication device 332. For example, the sub-communication device 330 may include the wireless LAN device 331 only, include the short-range communication device 332 only, or include both the wireless LAN device 331 and the short-range communication device 332.
The wireless LAN device 331 may be wirelessly connected to an access point according to control by the second controller 310 in a place where the access point is installed. The wireless LAN device 332 supports an Institute of Electrical and Electronics Engineers (IEEE) standard, IEEE 802.11x. The short-range communication device 332 may implement wireless short-range communications between the portable device 300 and an external device according to control by the second controller 310 without any access point. The short-range communications may be conducted using Bluetooth, Bluetooth low energy, infrared data association (IrDA), Wi-Fi, Ultra Wideband (UWB) and Near Field Communication (NFC).
The portable device 300 may include at least one of the mobile communication device 320, the wireless LAN device 331 and the short-range communication device 332 based on a performance thereof. For example, the portable device 300 may include a combination of the mobile communication device 320, the wireless LAN device and the short-range communication device 332 based on performance thereof.
In the present exemplary embodiment, the sub-communication device 330 may be connected to another portable device, for example, the teacher portable device 301 and the student portable device 302, or to the IWB 100 according to control by the second controller 310. The sub-communication device 330 may transmit and receive the collaborative screen information including a plurality of operation areas according to control by the second controller 310. The sub-communication device 330 may conduct transmission and reception of control signals with another portable device, for example, the teacher portable device 301 and the student portable device 302, or with the IWB 100 according to control by the second controller 310. In the present exemplary embodiment, the collaborative screen may be shared by the transmission and reception of data.
The second image processor 340 may include the broadcast communication device 341, the audio playback device 342 or the video playback device 343. The broadcast communication device 341 may receive a broadcast signal, for example, a TV broadcast signal, a radio broadcast signal or a data broadcast signal, and additional broadcast information, for example, an electronic program guide (EPG) or an electronic service guide (ESG), transmitted from an external broadcasting station through a broadcast communication antenna (not shown) according to control by the second controller 310. The second controller may process the received broadcast signal and the additional broadcast information using a video codec device and an audio codec device to be played back by the second display 390 and the speakers 363a and 363b.
The audio playback device 342 may process an audio source, for example, an audio file with a filename extension of .mp3, .wma, .ogg or .wav, previously stored in the second storage 375 of the portable device 300 or externally received to be played back by the speakers 363a and 363b according to control by the second controller 310.
In the present exemplary embodiment, the audio playback device 342 may also play back an auditory feedback, for example, an output audio source stored in the second storage 375, corresponding to a touch or consecutive movements of a touch detected on the touchscreen 391 through the audio codec device according to control by the second controller 310.
The video playback device 343 may play back a digital video source, for example, a file with a filename extension of .mpeg, .mpg, .mp4, .avi, .mov or .mkv, previously stored in the second storage 375 of the portable device 300 or externally received using the video codec device according to control by the second controller 310. Most applications installable in the portable device 300 may play back an audio source or a video file using the audio codec device or the video codec device.
In the present exemplary embodiment, the video playback device 343 may play back a visual feedback, for example, an output video source stored in the second storage 375, corresponding to a touch or consecutive movements of a touch detected on the touchscreen 391 through the video codec device according to control by the second controller 310.
It should be understood by a person skilled in the art that different types of video and audio codec devices may be used in the exemplary embodiments.
The second image processor 340 may include the audio playback device 342 and the video playback device 343, excluding the broadcast communication device 341, in accordance with the performance or structure of the portable device 300. Also, the audio playback device 342 or the video playback device 343 of the second image processor 340 may be included in the second controller 310. In the present exemplary embodiment, the term “video codec device” may include at least one video codec device. Also, the term “audio codec device” may include at least one audio codec device.
The camera 350 may include at least one of the first camera 351 on the front side 300a and the second camera 352 on the rear side 300c to take a still image or a video according to control by the second controller 310. The camera 350 may include one or both of the first camera 351 and the second camera 352. The first camera 351 or the second camera 352 may include an auxiliary light source, for example, the flash 353, to provide a needed amount of light for taking an image.
When the first camera 351 on the front side 300a is adjacent to an additional camera disposed on the front side, for example, a third camera (not shown), for instance, when a distance between the first camera 351 on the front side 300a and the additional camera is greater than 2 cm and shorter than 8 cm, the first camera 351 and the additional camera may take a 3D still image or a 3D video. Also, when the second camera 352 on the rear side 300c is adjacent to an additional camera disposed on the front side, for example, a fourth camera (not shown), for instance, when a distance between the second camera 352 on the rear side 300c and the additional camera is greater than 2 cm and shorter than 8 cm, the second camera 352 and the additional camera may take a 3D still image or a 3D video. In addition, the second camera 352 may take wide-angle, telephotographic or close-up picture using a separate adaptor (not shown).
The GPS device 355 periodically receives information, for example, accurate location information and time information on a GPS satellite (not shown) received by the portable device 300, from a plurality of GPS satellites (not shown) orbiting around the earth. The portable device 300 may identify a location, speed or time of the portable device 300 using the information received from the GPS satellites.
The input/output device 360 may include at least one of the button 361, the microphone 362, the speaker 363, the vibrating motor 364, the connector 365, the keypad 366 and the input device 367.
Referring to the portable device 300 shown in
The microphone 362 externally receives an input of a voice or a sound to generate an electric signal according to control by the second controller 310. The electric signal generated in the microphone 362 is converted in the audio codec device and stored in the second storage 375 or output through the speaker 363. The microphone 362 may be disposed on at least one of the front side 300a, the lateral side 300b and the rear side 300c of the portable device 300. Alternatively, at least one microphone 362 may be disposed only on the lateral side 300b of the portable device 300.
The speaker 363 may output sounds corresponding to various signals, for example, wireless signals, broadcast signals, audio sources, video files or taken pictures, from the mobile communication device 320, the sub-communication device 330, the second image processor 340 or the camera 350 out of the portable device 300 using the audio codec device according to control by the second controller 310.
The speaker 363 may output a sound corresponding to a function performed by the portable device, for example, a touch sound corresponding to input of a telephone number and a sound made when pressing a photo taking button. At least one speaker 363 may be disposed on the front side 300a, the lateral side 300b or the rear side 300c of the portable device 300. In the portable device 300 shown in
In addition, at least one speaker (not shown) may be disposed on the lateral side 300b. The portable device 300 having the at least one speaker disposed on the lateral side 300b may provide the user with different sound output effects from a portable device (not shown) having speakers disposed on the front side 300a and the rear side 300c only without any speaker on the lateral side 300b.
In the present exemplary embodiment, the speaker 363 may output the auditory feedback corresponding to a touch or consecutive movements of a touch detected on the touchscreen 391 according to control by the second controller 310.
The vibrating motor 364 may convert an electric signal to mechanical vibrations according to control by the second controller 310. For example, the vibrating motor 364 may include a linear vibrating motor, a bar-type vibrating motor, a coin-type vibrating motor or a piezoelectric vibrating motor. When a voice call request is received from another portable device, the vibrating motor 364 of the portable device 300 in vibration mode operates according to control by the second controller 310. At least one vibrating motor 364 may be provided for the portable device. 300. Also, the vibrating motor 364 may vibrate the entire portable device 300 or only part of the portable device 300.
The connector 365 may be used as an interface to connect the portable device to an external device (not shown) or a power source (not shown). The portable device may transmit data stored in the second storage 375 to the external device or receive data from the external device through a cable connected to the connector 365 according to control by the second controller 310. The portable device 300 may be supplied with power from the power source, or a battery (not shown) of the portable device 300 may be charged through the cable connected to the connector 365. In addition, the portable device 300 may be connected to an external accessory, for example, a keyboard dock (not shown), through the connector 365.
The keypad 366 may receive a key input from the user so as to control the portable device 300. The keypad 366 includes a physical keypad (not shown) formed on the front side 300a of the portable device 300, a virtual keypad (not shown) displayed within the touchscreen 391 and a physical keypad (not shown) connected wirelessly. It should be readily noted by a person skilled in the art that the physical keypad formed on the front side 300a of the portable device 300 may be excluded based on the performance or structure of the portable device 300.
The input device 367 may touch or select an object, for example, a menu, a text, an image, a video, a figure, an icon and a shortcut icon, displayed on the touchscreen of the portable device 300. The input device 367 may touch or select content, for example, a text file, an image file, an audio file, a video file or a reduced student personal screen, displayed on the touchscreen 391 of the portable device 300. The input device 367 may input a text, for instance, by touching a capacitive touchscreen, a resistive touchscreen and an electromagnetic induction touchscreen or using a virtual keyboard. The input device may include a pointing device, a stylus and a haptic pen with an embedded pen vibrating element, for example, a vibration motor or an actuator, vibrating using control information received from the communication device 330 of the portable device 300. The vibrating element may also vibrate using sensing information detected by a sensor (not shown) embedded in the input device 367, for instance, an acceleration sensor, instead of the control information received from the portable device 300. It should be readily noted by a person skilled in the art that the input device 367 to be inserted into the opening of the portable device 300 may be excluded based on the performance or structure of the portable device 300.
The sensor 370 includes at least one sensor to detect a status of the portable device 300. For example, the sensor 370 may include the proximity sensor 371 disposed on the front side 300a of the portable device 300 and detecting approach to the portable device 300, the luminance sensor 372 to detect an amount of light around the portable device 300, the gyro sensor 373 to detect a direction using rotational inertia of the portable device 300, an acceleration sensor (not shown) to detect a slope on three x, y and z axes to the portable device 300, a gravity sensor to detect a direction in which gravity is exerted or an altimeter to detect an altitude by measuring atmospheric pressure.
The sensor 370 may measure an acceleration resulting from addition of an acceleration of the portable device 300 in motion and acceleration of gravity. When the portable device 300 is not in motion, the sensor 370 may measure the acceleration of gravity only. For example, when the front side of the portable device 300 faces upwards, the acceleration of gravity may be in a positive direction. When the rear side of the portable device 300 faces upwards, the acceleration of gravity may be in a negative direction.
At least one sensor included in the sensor 370 detects the status of the portable device 300, generates a signal corresponding to the detection and transmits the signal to the second controller 310. It should be readily noted by a person skilled in the art that the sensors of the sensor 370 may be added or excluded based on the performance of the portable device 300.
The second storage 375 may store signals or data input and output corresponding to operations of the mobile communication device 320, the sub-communication device 330, the second image processor 340, the camera 350, the GPS device 355, the input/output device 360, the sensor 370 and the touchscreen 391 according to control by the second controller 310. The second storage 375 may store a GUI associated with a control program for controlling the portable device 300 or the second controller 310, and applications provided by a manufacturer or downloaded externally, images for providing the GUI, user information, a document, databases or relevant data.
In the present exemplary embodiment, the second storage 375 may store the collaborative screen received from the first storage 160 of the IWB 100 or the server 200. When an application for cooperative learning, for instance, an educational application, is implemented on the portable device 300, the second controller 310 controls the sub-communication device 330 to access the first storage 160 or the server 200, receives information including the collaborative screen from the first storage 160 or the server, and stores the information in the second storage 375. The collaborative screen stored in the second storage 375 may be updated according to control by the second controller 310, and the updated collaborative screen may be transmitted to the first storage 160 or the server 200 through the sub-communication device 330 to be shared with the IWB 100 or other portable devices 301 and 302.
The second storage 375 may store touch information corresponding to a touch and/or consecutive movements of a touch, for example, x and y coordinates of a touched position and time at which the touch is detected, or hovering information corresponding to a hovering, for example, x, y and z coordinates of the hovering and hovering time. The second storage 375 may store a type of the consecutive movements of the touch, for example, a flick, a drag, or a drag and drop, and the second controller 310 compares an input user touch with the information in the second storage 375 to identify a type of the touch. The second storage may further store a visual feedback, for example, a video source, output to the touchscreen 391 to be perceived by the user, an auditory feedback, for example, a sound source, output from the speaker 363 to be perceived by the user, and a haptic feedback, for example, a haptic pattern, output from the vibrating motor 364 to be perceived by the user, the feedbacks corresponding to an input touch or touch gesture.
In the present exemplary embodiment, the term “second storage” includes the second storage 375, the ROM 312 and the RAM 313 in the second controller 310, and a memory card (not shown), for example, a micro secure digital (SD) card and a memory stick, mounted on the portable device 300. The second storage may include a nonvolatile memory, a volatile memory, a hard disk drive (HDD) or a solid state drive (SSD).
The power source 380 may supply power to at least one battery (not shown) disposed in the portable device 300 according to control by the second controller 310. The at least one battery is disposed between the touchscreen 391 on the front side 300a and the rear side 300c of the portable device 300. The power supply 380 may supply power input from an external power source (not shown) through a cable (not shown) connected to the connector to the portable device 300 according to control by the second controller 310.
The touchscreen 391 may provide the user with GUIs corresponding to various services, for example, telephone calls, data transmission, a broadcast, taking pictures, a video or an application. The touchscreen 391 transmits an analog signal corresponding to a single touch or a multi-touch input through the GUIs to the touchscreen controller 395. The touchscreen 391 may receive a single-touch or a multi-touch input made by a user's body part, for example, a finger including a thumb, or made by touching the input device 367.
In the present exemplary embodiment, the touch may include not only contact between the touchscreen 391 and a user's body part or the touch-based input device 367 but noncontact therebetween, for example, a state of the user's body part or the input device 367 hovering over the touchscreen 391 at a detectable distance of 30 mm or shorter. It should be understood by a person skilled in the art that the detectable noncontact distance from the touchscreen 391 may be changed based on the performance or the structure of the portable device 300.
The touchscreen 391 may include, for instance, a resistive touchscreen, a capacitive touchscreen, an infrared touchscreen and an acoustic wave touchscreen.
The touchscreen controller 395 converts the analog signal corresponding to the single touch or the multi-touch received from the touchscreen 391 into a digital signal, for example, x and y coordinates of a detected touched position, and transmits the digital signal to the second controller 310. The second controller 310 may derive the x and y coordinates of the touched position on the touchscreen 391 using the digital signal received from the touchscreen controller 395. In addition, the second controller 310 may control the touchscreen 391 using the digital signal received from the touchscreen controller 395. For example, the second controller 310 may display a selected shortcut icon 391e to be distinguished from other shortcut icons 391a to 391d on the touchscreen 391 or implement and display an application, for example, an education application, corresponding to the selected shortcut icon 391e on the touchscreen 391 in response to the input touch.
In the present exemplary embodiment, one or more touchscreen controllers may control one or more touchscreens 391. The touchscreen controller 395 may be included in the second controller 310 depending on the performance or structure of the portable device 300.
The second controller 310 displays the collaborative screen including the plurality of operation areas on the display 390, that is, the touchscreen 391, allocates at least one of the operation areas to the user, for example, a student or a group participating in the cooperative learning, and displays the collaborative screen with the allocated operation area being distinguishable. Here, the allocated operation area is displayed on the portable device of the user, the student or the group participating in the cooperative learning.
The second controller 310 stores collaborative screen information including information on the allocated operation area in the first storage 160 of the display apparatus or the server 200. To this end, the second controller 310 transmits the collaborative screen information to the display apparatus 100 or the server 200 through the sub-communication device 330. The user, that is, the student or teacher, may perform an operation on the collaborative screen using the own portable device (the student portable device 302 or the teacher portable device 301), and information on the performed operation may be transmitted to the display apparatus 100 or the server 200, thereby updating the collaborative screen information previously stored in the first storage 150 or the server 200.
The second controller 310 detects a user touch on the second display 330, that is, the touchscreen 391, on which the collaborative screen is displayed and controls the collaborative screen corresponding to the detected touch. For example, when the user touch is a zoom in/out manipulation using a multi-touch, the second controller 310 may control the second display 330 to enlarge or reduce the collaborative screen corresponding to the manipulation. Here, the zoom in/out manipulation is also referred to as a pinch zoom in/out. Further, when the user touch is a flick or a drag, the second controller 310 may control the second display 330 to move and display the collaborative screen corresponding to a moving direction of the user touch. Additional exemplary embodiments of detecting the user touch and controlling the touchscreen will be described in detail with reference to the following drawings.
At least one component may be added to the components of the portable device 300 shown in
Hereinafter, screen control processes based on a user manipulation performed by the display apparatus 100 or the portable device 300 according to exemplary embodiments will be described in detail with reference to
Referring to
As shown in
The user may tap the collaborative screen 12 to enable the collaborative screen to be displayed as a full screen
The operation areas 13, 14, 15 and 16 may be allocated to each group or team including one student or a plurality of students. Here, the portable device 300 may use the camera 350 to perform group allocation. For example, an identification mark of a group allocated in advance to students is photographed using the rear camera 351, and students corresponding to the identification mark are set into one group and allocated an operation area.
As shown in
Although
Referring to
To this end, the display apparatus 100, the server 200, the display apparatus 100, and the portable device 300 are linked.
As shown in
When the user input for generating the collaborative screen is received through the teacher portable device 301 and the collaborative screen information is stored in the first storage 160 of the display apparatus 100, the teacher portable device 301 and the display apparatus 100 are linked to each other by respectively having opponents' lists through a reciprocal investigation. When the teacher portable device 301 receives a user input to set the size of the collaborative panel 12 and initial states of the operation areas 13, 14, 15 and 16, received setting information on the collaborative panel 12 (the size and initial states of the operations areas) and device information on the teacher portable device 301 are transmitted to the display apparatus 100 through the communication device 330. The display apparatus 100 stores collaborative panel information generated based on the received information in the first storage 160.
In the same manner, the setting information on the collaborative panel of the teacher portable device 301 and the device information on the teacher portable device 301 may be transmitted to the server 200 and stored.
The user may delete the collaborative panel generated in
The collaborative screen including the operation areas shown in
Hereinafter, a process of controlling a touchscreen based on a user touch according to an exemplary embodiment will be described with reference to
The user may select an operation area by touching the area on the collaborative screen displayed on the displays 130 and 390 and deselect the area by touching the area again.
As shown in
In the present exemplary embodiment, as shown in
To this end, the portable device 300 communicates with the server 200 and/or the display apparatus to transmit and receive data.
As shown in
The server 200 provides pre-stored area information (screen and property information) corresponding to the user instruction to the portable device 300 and updates the pre-stored collaborative panel information corresponding to the received user instruction. The updated collaborative panel information is provided to the portable device 300 and the display apparatus 100. Here, the updated collaborative panel information may be provided to all devices registered for the cooperative learning, for example, the display apparatus 100, the teacher portable device 301 and the student portable devices 302.
When the collaborative panel information is stored in the first storage 160 of the display apparatus 100, the coordinate information based on the user instruction input through the portable device 300 is transmitted to the display apparatus 100, and the display apparatus 100 may update the collaborative panel information pre-stored in the first storage and provide the collaborative panel information to the portable device 300. In the same manner, information (including coordinate information) based on a user manipulation on the collaborative panel performed in the display apparatus 100 may be transmitted and updated to be provided to both the portable device 300 and the display apparatus 100.
As shown in
As shown in
As shown in
The user may conduct a drag operation from the menu icon 41 to one bookmark 43, for example, a bookmark 2, among the bookmark items 42
As illustrated in
The user may conduct a drag operation from the menu icon 41 to one bookmark 45, for example, a bookmark 3, among the bookmark items 42
As shown in
As shown in
Accordingly, the user may move or copy an area through a simple manipulation using a drag and drop on the touchscreen 391.
As shown in
Accordingly, since the area B is placed in a read only state in which a change is unallowable, access to the region B via other devices is restricted, thereby preventing a change due to access by a teacher or student other than a student allocated the area B.
As shown in
When the luminance sensor 372 detects that the light is blocked, the second controller 310 transmits a command to hide the area B to adjacent devices, for example, the other portable devices and the display apparatus, through the communication device 330. Hidden information on the area B is stored in the first storage 160 or the server 200 as operation area information.
Accordingly, displaying the area B on other devices is restricted, thereby preventing a teacher or student, other than a student allocated the area B, from checking details of the operation.
As shown in
The server 200 changes the pre-stored area information (screen and property information) corresponding to the user instruction and updates the pre-stored collaborative panel information. The server 200 retrieves personal devices 301 and 302 registered in the collaborative panel including the touched area and transmits the updated collaborative panel information to the retrieved devices 301 and 302. The updated collaborative panel information is provided to the portable device 300 and the display apparatus 100. Here, the updated collaborative panel information may be provided to all devices registered for the cooperative learning, for example, the display apparatus 100, the teacher portable device 301 and the student portable devices 302.
The portable device 300 or the display apparatus 100 updates the collaborative panel on the touchscreen 391 based on the received updated collaborative panel information.
When the collaborative panel information is stored in the first storage 160 of the display apparatus 100, the area control signal based on the user instruction through the portable device 300 is transmitted to the display apparatus 100, and the display apparatus 100 may update the collaborative panel information pre-stored in the first storage 160 and provides the updated collaborative panel information to the portable device 300. In the same manner, an area control signal on the collaborative panel performed in the display apparatus may be transmitted and updated, thereby providing updated information to both the portable device 300 and the display apparatus 100.
As shown in
When the user touches or taps an operation area A (operation 92), the first controller 110 enlarges the touched area A to be displayed as a full screen on the first display
With the operation area B being displayed as the full screen as shown in
As shown in
The user may conduct a drag operation from the menu icon 91 to one bookmark, for example, a bookmark 2, among the bookmark items 92
Hereinafter, a screen display method according to an exemplary embodiment will be described with reference to
As shown in
The controllers 110 and 310 allocate the operation areas on the collaborative screen to the portable device 302 according to a user instruction (operation S404). Here, operations S402 and S404 may be carried out in the process of generating and allocating the collaborative screen shown in
The display apparatus 100 or the portable device 300 receives a user touch input on the collaborative screen including the operation areas from the user (operation S406). Here, the received user touch input include inputs based on various user manipulations described above in
The controllers 110 and 310 or touchscreen controller 395 detects a touch based on the user input received in operation S406, controls the collaborative screen corresponding to the detected touch, and updates the information on the stored collaborative screen accordingly (operation S408).
The updated information is shared between registered devices 100, 301 and 302, which participate in cooperative learning (operation S410).
As described above, the exemplary embodiments may share data between a plurality of portable devices or between a portable device and a collaborative display apparatus, display a screen on the display apparatus or a portable device for controlling another portable device, and use the displayed screen of the other portable device.
In detail, the exemplary embodiments may generate a collaborative screen for cooperative learning in an educational environment, detect a touch input to a portable device or display apparatus to control the collaborative screen, and share controlled information between devices, thereby enabling efficient learning.
For example, a teacher may conduct discussions about an area involved in cooperative learning with other students or share an exemplary example of the cooperative learning with the students, thereby improving quality of the cooperative learning. A student may ask for advice on the student's own operation from the teacher or the operation of other students. Also, the teacher may monitor an operation process of a particular area conducted by a student using a teacher portable device, while the student may seek advice on the operation process from the teacher.
In addition, the screen may be controlled in different manners based on various touch inputs to a portable device or a display apparatus, thereby enhancing user convenience.
Although a few exemplary embodiments have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these exemplary embodiments without departing from the principles and spirit of the inventive concept, the scope of which is defined in the appended claims and their equivalents.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2013-0104965 | Sep 2013 | KR | national |
