Patent Publication Number: US-2018039371-A1

Title: Electronic apparatus and controlling method thereof

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is based on and claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2016-0098322, filed in the Korean Intellectual Property Office on Aug. 2, 2016, the disclosure of which is incorporated by reference herein in its entirety. 
     BACKGROUND 
     1. Field 
     The present disclosure relates generally to an electronic apparatus and a controlling method thereof, and for example, to an electronic apparatus that can easily control a panoramic image displayed on a display apparatus and a controlling method thereof. 
     2. Description of Related Art 
     Thanks to electronics development, various types of electronic products are developed and supplied. Specifically, various photographing apparatuses such as a cell phone, a laptop computer, a personal digital assistant (PDA) and the like are used in most homes. 
     As use of photographing apparatus has been increased, user needs for more various functions also has been increased. Accordingly, products with new functions are coming out according to many manufacturers&#39; efforts to meet the user needs. 
     Recently, photographing apparatuses with a function of generating a panoramic image by using images photographed at a plurality of viewpoints are developed. Regarding such a panoramic image, it is normal for a user to appreciate the panoramic image by moving viewpoints through a virtual reality (VR) apparatus or a mobile phone. 
     Meanwhile, even though it is normal to use a remote controller when a user watches a panoramic image on a big screen such as a TV screen, there are difficulties in moving to a desired viewpoint of a panoramic image, minimizing and/or reducing an image and enlarging an image with a remote controller having four direction keys, etc. 
     SUMMARY 
     Various example embodiments relate to an electronic apparatus that can easily control a panoramic image displayed on a display apparatus and a controlling method thereof. 
     As aspect of an example embodiment relates to an electronic apparatus, including: a communicator comprising communication circuitry configured to communicate with a display apparatus configured to display an image of a viewpoint of a panoramic image; a touch screen configured to display a substantially circular user interface (UI); and a processor, in response to a point on the substantially circular UI being touched, configured to transmit a control signal to display an image of a viewpoint of the panoramic image corresponding to the touched point to the display apparatus through the communicator. 
     The processor, in a state that an image of a first viewpoint corresponding to a first point of the substantially circular UI is displayed on the display apparatus, in response to a second point of the substantially circular UI being touched, may transmit a control signal to display an image of a second viewpoint that is moved from the first viewpoint by as much as an angle between the first point and the second point with reference to a center of the substantially circular UI, to the display apparatus through the communicator. 
     The substantially circular UI may be divided into a plurality of areas respectively corresponding to a plurality of viewpoints. 
     The processor may control the touch screen such that, among the plurality of areas, an area corresponding to a viewpoint of an image which is displayed on the display apparatus is displayed distinctively from another area. 
     The processor, in response to a point of the substantially circular UI being touched for more than a pre-set period of time, may display an image of a viewpoint corresponding to the touched point of the panoramic image through the touch screen. 
     The processor, in a state that the display apparatus and the touch screen respectively display an image of a viewpoint of the panoramic image, in response to a control authority over the electronic apparatus being set on the substantially circular UI and a point of the circular UI being touched, may control the touch screen to display an image of a viewpoint corresponding to the touched point. 
     The processor, in a state that an image of a first viewpoint of the panoramic image is displayed on the display apparatus and an image of a second viewpoint of the panoramic image is displayed on the touch screen, in response to an image of a second viewpoint displayed on the touch screen being touched and a dragging manipulation in an outside direction of the electronic apparatus being sensed, may control the touch screen to display the image of the first viewpoint and control the communicator to transmit a control signal to display the image of the second viewpoint, to the display apparatus. 
     The processor, in response to the dragging manipulation being sensed, through the communicator, may receive the image of the first viewpoint from the display apparatus and transmit viewpoint information corresponding to the image of the second viewpoint to the display apparatus. 
     The processor may control the touch screen to further display a second substantially circular UI in addition to the substantially circular UI and, in response to a point on the second substantially circular UI being touched, display an image of a viewpoint corresponding to the touched point of the panoramic image on the touch screen. 
     The processor, in response to a dragging manipulation being sensed on a second area that is distinguished from a first area displaying the substantially circular UI, may transmit a control signal to move a viewpoint of the panoramic image displayed on the display apparatus based on a direction in which the dragging manipulation is made, to the display apparatus through the communicator. 
     The processor, in response to two points being touched on the second area and a manipulation of changing a distance between the two points being sensed, may control the communicator to transmit a control signal to zoom in or zoom out an image which is displayed on the display apparatus based on the changed distance, to the display apparatus. 
     The processor, in response to a center of the substantially circular UI being touched, may control the communicator to transmit a control signal to display an image of a default viewpoint of the panoramic image to the display apparatus. 
     The apparatus may further include a sensor configured to sense a movement of the electronic apparatus, wherein the processor controls the communicator to transmit a control signal to move a viewpoint of the panoramic image displayed on the display apparatus based on a movement change of the electronic apparatus sensed by the sensor, to the display apparatus. 
     The processor may control the communicator to receive state information from the display apparatus and, in response to determining that an image of a viewpoint of the panoramic image is displayed on the display apparatus based on the received state information, control the touch screen to display the circular UI. 
     According to an aspect of another example embodiment, method of controlling an electronic apparatus is provided, including: connecting a display apparatus which displays an image of a viewpoint of a panoramic image with the electronic apparatus; displaying a substantially circular UI; and in response to a point of the circular UI being touched, transmitting a control signal to display an image of a viewpoint corresponding to the touched point of the panoramic image to the display apparatus. 
     The transmitting may include, in a state that an image of a first viewpoint corresponding to a first point of the substantially circular UI is displayed on the display apparatus, in response to a second point of the substantially circular UI being touched, transmitting a control signal to display an image of a second viewpoint that is moved from the first viewpoint by as much as an angle between the first point and the second point with reference to a center of the substantially circular UI, to the display apparatus through the communicator. 
     The method of controlling the electronic apparatus may further include, in response to a point of the substantially circular UI being touched for more than a pre-set period of time, displaying an image of a viewpoint corresponding to the touched point of the panoramic image on the electronic apparatus. 
     The method of controlling the electronic apparatus may further include, in a state that an image of a first viewpoint of the panoramic image is displayed on the display apparatus and an image of a second viewpoint of the panoramic image is displayed on the electronic apparatus, in response to an image of a second viewpoint displayed on the electronic apparatus being touched and a dragging manipulation in an outside direction of the electronic apparatus being sensed, displaying the image of the first viewpoint on the electronic apparatus and transmitting a control signal to display the image of the second viewpoint, to the display apparatus. 
     The method of controlling the electronic apparatus may further include receiving state information from the display apparatus and the displaying the substantially circular UI may include, in response to determining that an image of a viewpoint of the panoramic image is displayed on the display apparatus based on the received state information, controlling the touch screen to display the substantially circular UI. 
     According to an aspect of another example embodiment, a computer-readable recording medium is provided, including a program which, when executed by a processor, causes an electronic apparatus to perform operations comprising: connecting a display apparatus which displays an image of a viewpoint of a panoramic image with the electronic apparatus; displaying a substantially circular UI; and in response to a point of the circular UI being touched, transmitting a control signal to display an image of a viewpoint corresponding the touched point of the panoramic image to the display apparatus. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above aspects, features and attendant advantages of the present disclosure will be more readily understood and appreciated from the following detailed description, taken in conjunction with the accompanying drawings, in which like reference numerals refer to like elements, and wherein: 
         FIG. 1  is a diagram illustrating an example display system according to an example embodiment of the present disclosure; 
         FIG. 2  is a block diagram illustrating an example configuration of an electronic apparatus according to an example embodiment of the present disclosure; 
         FIGS. 3 and 4  are diagrams illustrating example UI(s) provided by an electronic apparatus according to various example embodiments of the present disclosure; 
         FIG. 5  is a diagram illustrating example images of various viewpoints of a panoramic image; 
         FIGS. 6, 7 and 8  are diagrams illustrating example methods of moving a viewpoint of a panoramic image displayed on a display apparatus using a substantially circular UI of an electronic apparatus according to various example embodiments of the present disclosure; 
         FIGS. 9, 10 and 11  are diagrams illustrating example methods of moving a viewpoint of a panoramic image displayed on a display apparatus according to various touch manipulations on the electronic apparatus according to various example embodiments of the present disclosure; 
         FIGS. 12 and 13  are diagrams illustrating example methods of displaying a viewpoint of a panoramic image on an electronic apparatus according to various example embodiments of the present disclosure; 
         FIG. 14  is a diagram illustrating an example exchange of images between a display apparatus and an electronic apparatus according to an example embodiment of the present disclosure; 
         FIG. 15  is a diagram illustrating an example movement to a default viewpoint of a panoramic image according to an example embodiment of the present disclosure; 
         FIG. 16  is a flowchart illustrating an example method of controlling an electronic apparatus according to an example embodiment of the present disclosure; and 
         FIG. 17  is a diagram illustrating an example method of displaying various viewpoints of a panoramic image on a display apparatus and a plurality of electronic apparatuses according to an example embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, the terms used in describing the various example embodiments will be briefly explained, and example embodiments are described in greater detail with reference to the accompanying drawings. 
     Although the terms used in the example embodiments are general terms, which are widely used at the present time considering the functions in the present disclosure, the terms may be changed depending on an intention of a person skilled in the art, a precedent, and introduction of new technology. In addition, in a special case, terms that are arbitrarily selected may be used. In this case, the meaning of the terms will be explained in detail in the corresponding detailed descriptions. Accordingly, the terms used in the description should not necessarily be construed as simple names of the terms, but be defined based on meanings of the terms and overall contents of the present disclosure. 
     The example embodiments may vary, and may be provided in different example embodiments. Various example embodiments are described with reference to accompanying drawings. However, this is not intended to limit the scope to an example embodiment, and therefore, it should be understood that all the modifications, equivalents or substitutes included under the spirit and technical scope are encompassed. While describing example embodiments, if it is determined that the specific description regarding a known technology might obscure the gist of the disclosure, the specific description may be omitted. 
     In the present disclosure, relational terms such as first and second, and the like, may be used to distinguish one entity from another entity, without necessarily implying any actual relationship or order between such entities. 
     It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. The terms, “include”, “comprise”, “is configured to”, etc. of the description are used to indicate that there are features, numbers, steps, operations, elements, parts or combination thereof, and they do not exclude the possibilities of combination or addition of one or more features, numbers, steps, operations, elements, parts or combination thereof. 
     In an example embodiment, ‘a module’ or ‘a unit’ performs at least one function or operation, and may be realized as hardware (e.g., circuitry), firmware, software, or combination thereof. In addition, a plurality of ‘modules’ or ‘units’ may be integrated into at least one module and may be realized as at least one process or processor (not shown) except for ‘modules’ or ‘units’ that should be realized in specific hardware. 
     The example embodiments of the disclosure will be described in greater detail below in a manner that will be understood by one of ordinary skill in the art. However, example embodiments may be realized in a variety of different configurations, and not limited to descriptions provided herein. Further, those descriptions that are irrelevant to the disclosure may be omitted so as to describe example embodiments more clearly, and similar drawing reference numerals are used for the similar elements throughout the description. 
     Hereinafter, the present disclosure will be explained in further detail with reference to the drawings attached. 
       FIG. 1  is a diagram illustrating an example display system  1000  according to an example embodiment of the present disclosure. 
     Referring to  FIG. 1 , the display system  1000  includes an electronic apparatus  100  and a display apparatus  200  controlled by the electronic apparatus  100 . The electronic apparatus  100  and the display apparatus  200  may be operably connected with each other and transcieve a control signal, an image, etc. 
     For example, the electronic apparatus  100  may be an apparatus including a manipulation part to control an image that is displayed on the display apparatus  200  and may be embodied as various electronic apparatuses such as a smartphone, a tablet personal computer (PC), a laptop computer, a desktop PC, a remote controller, a wearable device and the like, but is not limited thereto. The electronic apparatus  100  may include at least one of a touch screen, a physical button, a keyboard, a mouse, a motion sensing sensor, a pressure sensing sensor and the like that can receive a user manipulation to control an image displayed on the display apparatus  200 , but is not limited thereto. 
     The display apparatus  200  may refer, for example, to an apparatus to display an image and the display apparatus  200 , for example, may be a TV, a tablet PC, a laptop computer, a desktop PC, a projector or the like, but is not limited thereto. 
     The display apparatus  200  may receive a control signal based on a user manipulation made on the electronic apparatus  100  and execute an operation based on the control signal. According to an example embodiment, the display apparatus  200  may display a panoramic image and move a viewpoint of the panoramic image based on the control signal received from the electronic apparatus  100 . 
     The panoramic image may refer, for example, to an image having various viewpoints and the panoramic image, for example, may be an image which is generated by combining a plurality of images that are photographed by one camera being moved, an image generated by combining a plurality of images photographed by many cameras at different viewpoints in an identical space, or an image photographed by a camera which have a wide view angle, or the like, but is not limited thereto. In addition, the panoramic image is not limited to an image photographed by a camera. For example, artificially produced content such as a game image may also be the panoramic image. Meanwhile, an image includes a still image and a video. 
     The panoramic image also includes a 360 degree panoramic image. The 360 degree panoramic image may refer, for example, to an image whose start and end are the same and the 360 degree panoramic image may be referred to using various names such as a spherical image, an omni-directional image and the like. For example, in case that a user watches a 360 degree panoramic image through the display apparatus  200 , the user may easily move a viewpoint to a desired viewpoint by using a UI provided on the electronic apparatus  100 . 
     An example configuration of the electronic apparatus  100  may be explained in more detail with reference to  FIG. 2 . 
     Referring to  FIG. 2 , the electronic apparatus  100  includes a communicator (e.g., including communication circuitry)  110 , a touch screen  120  and a processor (e.g., including processing circuitry)  130 . 
     The communicator  110  may include various communication circuitry for a communication between the electronic apparatus  100  and an external apparatus. The communicator  110  may connect the electronic apparatus  100  with an external apparatus in a wireless communication method or a wired communication method. The communicator  110  may include various communication circuitry, such as, for example, and without limitation, a WiFi chip, a Bluetooth chip, a Near Field Communication (NFC) chip, a wireless communication chip, and/or the like. In this case, the WiFi chip, the Bluetooth chip, the NFC chip respectively perform communication by using WiFi, Bluetooth, and NFC. The NFC chip may correspond to a chip which operates with the Near Field Communication (NFC) method using 13.56 MHz, from among various RF-ID frequency bands such as 135 kHz, 13.56 MHz, 433 MHz, 860-960 MHz, and 2.45 GHz, and/or the like. In case of using the WiFi chip or the Bluetooth chip, various connection information such as a Service Set Identification (SSID), a session key, and/or the like may be transceived first, and by using the connection information, communication is connected, and then various information may be transceived. A wireless communication chip may refer, for example, to a chip that communicates according to various communication protocols, such as an IEEE, a ZigBee, a 3rd Generation (3G), a 3rd Generation Partnership (3GP), a Long Term Evolution (LTE), and the like. 
     In order to control a panoramic image displayed on the display apparatus  200 , it is necessary that the electronic apparatus  100  and the display apparatus  200  are operably connected with each other. Example methods of connecting the electronic apparatus  100  with the display apparatus  200  are as follows. 
     For example, in case that an NFC communication between the display apparatus  200  and the electronic apparatus  100  is possible, if the electronic apparatus  100  approaches (is detected by) the display apparatus  200 , the electronic apparatus  100  may be automatically connected with the display apparatus  200 . 
     As another example, the electronic apparatus  100  and the display apparatus  200  may be connected through an authentication via ultrasonic waves and the Bluetooth. For example, the display apparatus  200  may include an apparatus which can generate ultrasonic waves. It is difficult for ultrasonic waves to pass through a wall and accordingly, the electronic apparatus  100  may recognize that the display apparatus  200  is in a space where the electronic apparatus  100  is present by receiving ultrasonic waves generated by the display apparatus  200 . As such, if it is certain that the electronic apparatus  100  and the display apparatus  200  are in one space, the electronic apparatus  100  may be connected with the display apparatus  200  via Bluetooth. 
     In addition to the display apparatus  200 , the electronic apparatus  100  may also control another external apparatus. In this case, the electronic apparatus  100  may display a list of apparatuses that can be controlled by the electronic apparatus  100 , and if the display apparatus  200  is selected among the apparatuses, the electronic apparatus  100  may be connected with the display apparatus  200  in a pre-set wireless communication method. 
     In addition to the NFC and the Bluetooth connecting methods, the electronic apparatus  100  may be connected with the display apparatus  200  through various wireless communication methods such as a WiFi connection, a WiFi direct connection method and the like. In addition to the wireless communication methods, the electronic apparatus  100  may also be connected with the display apparatus  200  through a wired connection method. 
     As another example, the electronic apparatus  100  may control the display apparatus  200  using an infrared (IR) signal. 
     The touch screen  120  can receive a touch manipulation of a user by displaying a screen. A touch sensor included in the touch screen  120  may be embodied in various ways, such as, for example, and without limitation, a capacitive touch sensor or a resistive touch sensor. A capacitive touch sensor, when a part of a user&#39;s body touches a surface of the touch screen  120 , senses imperceptible electricity caused by the body of the user and calculates (determines) touch coordinates. A resistive touch sensor including two electrode plates, when a user touches the touch screen  120 , senses electricity flowing by an upper plate and a lower plate of the touched point contacting each other and calculates (determines) touch coordinates. 
     In addition, the touch screen  120  may include a pressure sensor and sense an intensity of a touch by a user. The pressure sensor may be included in the touch screen  120  and include a piezo film to output an electric signal corresponding to the intensity of the pressure. Meanwhile, if the touch sensor is embodied as a resistive touch sensor, the resistive touch sensor may also function as a pressure sensor. 
     The touch screen  120  may display various UIs and receive a touch manipulation with respect to a UI. For example, the touch screen  120  may display a circular (e.g., substantially circular) UI to control a panoramic image displayed on the display apparatus  200 . Descriptions of the circular UI will be described in greater detail hereinafter. It will be understood that the term “substantially circular” when used in connection with the UI herein encompasses both a circular UI and/or a UI that is not perfectly circular, but has a curved appearance, or is more or less circular. Moreover, the term “circular” when used in connection with the UI herein encompasses “substantially circular.” It will also be understood that while a substantially circular UI is described in detail herein, that there is no limitation to the shape, size and/or appearance of the UI, and that any form of UI is contemplated and may be used. 
     Meanwhile, as set forth above the electronic apparatus  100  may include the touch screen  120  as a manipulation part but it is not limited thereto and the electronic apparatus  100  may include another manipulation part instead of the touch screen. For example, the electronic apparatus  100  may receive a user manipulation with respect to a UI displayed on a display included in the electronic apparatus  100  through various input circuitry, such as, for example, and without limitation, a physical button, a touch pad or the like included in the electronic apparatus  100 . 
     The processor  130  may include various processing circuitry that controls overall operation of the electronic apparatus  100 . The processor  130  may include various processing circuitry, including, for example, and without limitation, a central processing unit (CPU), a RAM, a ROM and a system bus. Hereinabove, it is described that the processor  130  includes one CPU but the processor  130  may include a plurality of CPUs (or may be embodied as a dedicated processor, a digital signal processor (DSP) or a System on chip (SoC), etc.), but is not limited thereto. 
     The processor  130  may control the touch screen  120  to display a substantially circular UI to control the display apparatus  200 . 
     According to an example embodiment, the processor  130  may control the touch screen  120  to display the substantially circular UI based on a user manipulation. 
     According to another example embodiment, it is possible to automatically display the substantially circular UI without a user manipulation. For example, when the electronic apparatus  100  is connected with the display apparatus  200 , the processor  130  may control the communicator  110  to receive state information of the display apparatus  200  and if it is determined that an image of a viewpoint of a panoramic image is displayed on the display apparatus  200  based on the received state information, the processor  130  may control the touch screen  120  to display the substantially circular UI. 
     For example, when the display apparatus  200  is connected with electronic apparatus  100 , metadata of an image displayed on the display apparatus  200  is checked and if it is determined that the displayed image is an image of a viewpoint of a panoramic image, state information indicating that the viewpoint of the panoramic image is being displayed may be transmitted to the electronic apparatus  100 . The electronic apparatus  100  may receive the state information and determine what viewpoint of image of the panoramic image is being displayed on the display apparatus  200 . 
       FIGS. 3 and 4  are diagrams illustrating various example embodiments of screen configurations including a substantially circular UI(s) provided by the electronic apparatus  100  according to example embodiments of the present disclosure. 
     The electronic apparatus  100  may display a substantially circular UI  10  as illustrated in  FIG. 3  on the touch screen  120 . The substantially circular UI  10  is a touch sensing UI and the electronic apparatus  100  may transfer a different control signal according to a touch point, to the display apparatus  200 . 
     The electronic apparatus  100  may further display another substantially circular UI  20  to control the electronic apparatus  100  as illustrated in  FIG. 4  on the touch screen  120  in addition to the substantially circular UI  10  to control the display apparatus  200 . It is possible to display the plurality of substantially circular UIs to control the respective display apparatus  200  and electronic apparatus  100  but the electronic apparatus  100  may display only one substantially circular UI and have a control authority over the display apparatus  200  or over the electronic apparatus  100  based on a situation. 
       FIG. 5  is a diagram illustrating an example panoramic image that the display apparatus  200  displays and more particularly illustrating a 360 degree panoramic image (e.g., a spherical image). 
     Referring to  FIG. 5 , the display apparatus  200  may display images of some viewpoints of the entire panoramic image  500 . For example, as illustrated in  FIG. 5 , an image of a first viewpoint  500 A, an image of a second viewpoint  500 B, an image of a third viewpoint  500 C and an image of a fourth viewpoint  500 D may be displayed on the display apparatus  200 . As an example of an actual place, if a panoramic image  500  is photographed on a mound of a baseball park, a home plate is photographed in the image of first viewpoint  500 A, a third base is photographed in the image of the second viewpoint  500 B, a second base is photographed in the image of the third viewpoint  500 C and a first base is photographed in the image of the fourth viewpoint  500 D. 
       FIGS. 6, 7 and 8  are diagrams illustrating example methods of moving a viewpoint of a panoramic image displayed on the display apparatus  200  using the electronic apparatus  100  according to various example embodiments of the present disclosure. In describing drawings of  FIGS. 6 to 8 ,  FIG. 5  is also referred to. 
       FIG. 6  is a diagram illustrating a situation of moving a viewpoint in order to display the image of the second viewpoint  500 B using the substantially circular UI  10  of the electronic apparatus  100  in a state that the display apparatus  200  displays the image of the first viewpoint  500 A of the panoramic image  500 . 
     Referring to  FIG. 6 , in a state that the display apparatus  200  displays the image of first viewpoint  500 A of the panoramic image  500 , in response to a second point  10 B of the substantially circular UI  10  displayed on the electronic apparatus  100  being touched, the processor  130  controls the communicator  110  to transmit a control signal to display an image of a viewpoint matching (e.g., corresponding to) the touched point, or the image of the second viewpoint  500 B, to the display apparatus  200 . Accordingly, a viewpoint displayed of the display apparatus  200  is moved from the image of the first viewpoint  500 A to the image of the second viewpoint  500 B. 
     Meanwhile, in order to notify or inform a user of a viewpoint of an image displayed on the display apparatus  200 , a part corresponding to the viewpoint may be displayed distinctively from other parts of the substantially circular UI  10  displayed on the electronic apparatus  100 . For example, as illustrated in  FIG. 6 , while the image of the first viewpoint  500 A is displayed on the display apparatus  200 , a first part  10 A of the substantially circular UI  10  of the electronic apparatus  100  may be highlighted and while the image of the second viewpoint  500 B is displayed on the display apparatus  200 , the second point  10 B of the substantially circular UI  10  may be highlighted. 
     For example, if the electronic apparatus  100  is connected with the display apparatus  200  in a situation that the display apparatus  200  displays the image of the first viewpoint  500 A, the display apparatus  200  may transmit state information including information regarding a viewpoint of the image which is currently displayed. As illustrated in  FIG. 6 , the processor  130  may highlight the first point  10 A corresponding to the first viewpoint based on the received state information. If a touch on the second point  10 B is sensed, the processor  130  may highlight the second point  10 B based on the sensed result. 
     The panoramic image  500  may be stored in the display apparatus  200  or in a memory (not illustrated) of the electronic apparatus  100 . Referring to  FIG. 6 , if a panoramic image is stored only in the electronic apparatus  100  and not stored in the display apparatus  200 , the electronic apparatus  100  transmits the image of the second viewpoint  500 B and a control signal to display the image of the second viewpoint  500 B to the display apparatus  200 . If the panoramic image is stored in the display apparatus  200 , the electronic apparatus  100  does not transmit the image of the second viewpoint  500 B. Instead, the electronic apparatus  100  transmits information regarding the second viewpoint and a control signal to the display the image of the second viewpoint  500 B to the display apparatus  200 . The processor  130  may determine whether the panoramic image is stored in the display apparatus  200  based on the state information received from the display apparatus  200 . 
       FIG. 7  is a diagram illustrating an example of moving a viewpoint to the image of the third viewpoint  500 C using the substantially circular UI  10  of the electronic apparatus  100  in a state that the display apparatus  200  displays the image of the second viewpoint  500 B of the panoramic image  500 . 
     Referring to  FIG. 7 , in a state that the display apparatus  200  displays the image of the second viewpoint  500 B of the panoramic image  500 , if a third point  10 C of the substantially circular UI  10  displayed on the electronic apparatus  100  is touched, the processor  130  controls the communicator  110  to transmit a control signal to display an image of a viewpoint matching (e.g., corresponding to) the touched point, or the image of the third viewpoint  500 C, to the display apparatus  200 . Accordingly, a viewpoint of the display apparatus  200  is changed by the image of the second viewpoint  500 B being changed to the image of the third viewpoint  500 C. 
     More detailed explanations on a process of transmitting a control signal according to an example embodiment with reference to  FIG. 7  are as follows. 
     If the third point  10 C of the substantially circular UI  10  is touched in a state that the image of the second viewpoint  500 B matching the second point  10 B of the substantially circular UI  10  is displayed on the display apparatus  200 , the processor  130  transmits a control signal to display the image of the third viewpoint  500 C which is moved from the second viewpoint by, for example, as much as an angle between the second point  10 B and the third point  10 C with reference to a center  11  of the substantially circular UI  10 , to the display apparatus  200  through the communicator  110 . In other words, in  FIG. 7 , the image of the third viewpoint  500 C that is about  90  degrees moved in a clockwise direction from the image of the second viewpoint  500 B is displayed on the display apparatus  200  because the angle between the second point  10 B and the third point  10 C with reference to the center  11  is about 90 degrees in a clockwise direction. 
       FIG. 8  is a diagram illustrating an example moving a viewpoint to the image of the fourth viewpoint  500 D using the substantially circular UI  10  of the electronic apparatus  100  in a state that the display apparatus  200  displays the image of the third viewpoint  500 C of the panoramic image  500  according to an example embodiment of the present disclosure. 
     Referring to  FIG. 8 , in a state that the display apparatus  200  displays the image of the third viewpoint  500 C of the panoramic image  500 , if the fourth point  10 D of the substantially circular UI  10  displayed on the electronic apparatus  100  is touched, the processor  130  controls the communicator  110  to transmit a control signal to display an image of a viewpoint matching (e.g., corresponding to) the touched point, or the image of the fourth viewpoint  500 D, to the display apparatus  200 . Accordingly, a viewpoint of the display apparatus  200  is moved from the image of the third viewpoint  500 C to the image of the forth viewpoint  500 D. 
     More detailed explanations on a process of transmitting a control signal according to an example embodiment with reference to  FIG. 8  are as follows. 
     The substantially circular UI  10  may be divided into a plurality of areas respectively matching (e.g., corresponding to) a plurality of viewpoints. Referring to  FIG. 8 , the substantially circular UI  10  is divided into four areas. Each of the plurality of areas matches at least one of a plurality of respective viewpoints of the panoramic image  500 . In other words, a first area  10 - 1  matches the image of the first viewpoint  500 A, a second area  10 - 2  matches the image of the second viewpoint  500 B, a third area  10 - 3  matches the image of the third viewpoint  500 C and a fourth area  10 - 4  matches the image of the fourth viewpoint  500 D. In  FIG. 8 , since a fourth point  10 D of the fourth area  10 - 4  is touched, the processor  130  may control the communicator  110  to transmit a control signal to display the image of the fourth viewpoint  500 D matching the touched fourth area  10 - 4 , to the display apparatus  200 . 
     As illustrated in  FIG. 8 , if the display apparatus  200  displays the image of the fourth viewpoint  500 D, the processor  130  may control the touch screen  120  to display the fourth area  10 - 4  matching the viewpoint of the image  500 D displayed on the display apparatus  200  distinctively from the other areas  10 - 1 ,  10 - 2 ,  10 - 3 . For example, as illustrated in  FIG. 8 , the fourth area  10 - 4  may be highlighted. Accordingly, a user may easily recognize a viewpoint of a panoramic image displayed on the display apparatus  200 . 
     According to the various example embodiments, a user may readily move a viewpoint of a panoramic image displayed on the display apparatus  200  through the circular UI provided by the electronic apparatus  100 . 
     Meanwhile, according to another example embodiment, a viewpoint of a panoramic image displayed on the display apparatus  200  may be moved even without using the substantially circular UI. Regarding this, explanations are described below with reference to  FIGS. 9 and 10 . 
     Referring to  FIG. 9 , if, for example, a dragging (or swiping) manipulation is sensed on a second area  920  that is distinguished from the a first area  910  where the substantially circular UI  10  is displayed on the electronic apparatus  10 C, the processor  130  may transmit a control signal to move a viewpoint of the panoramic image displayed on the display apparatus  200  based on a direction in which the dragging manipulation is made, to the display apparatus  200  through the communicator  110 . In other words, as illustrated in  FIG. 9 , if a drag in a right direction is sensed in a situation that the image of the first viewpoint  500 A is displayed on the display apparatus  100 , a control signal to display the image of the fourth viewpoint  500 D that is moved as much as a distance corresponding to a distance moved by the drag from the image of the first viewpoint  500 A of the panoramic image  500  in a clockwise direction may be transmitted, from the electronic apparatus  100  to the display apparatus  200 . 
     Referring to  FIG. 10 , if, for example, a dragging manipulation in a downward direction is sensed on the second area  920  distinguished from the first area  910  where the substantially circular UI  10  is displayed on the electronic apparatus  100 , the processor  130  may control the communicator  110  to transmit a control signal to display an image of a fifth viewpoint  500 E that is upwardly moved as much as a distance moved by a drag from the image of the first viewpoint  500 A of the panoramic image  500  illustrated in  FIG. 5 , to the display apparatus  200 . In other words, as illustrated in  FIG. 10 , in a state that an image of a viewpoint looking at a baseball park, if there is a dragging manipulation in a downward direction, an image of a viewpoint looking at sky may be displayed on the display apparatus  200 . 
     For an exact or more precise viewpoint movement, it may be beneficial to use a dragging manipulation instead of using the substantially circular UI as explained with reference to  FIGS. 9 and 10 . For a quick viewpoint change (a direct movement), it may be beneficial to use a touch manipulation on the circular UI as explained with reference to  FIGS. 6 to 8 . 
     The electronic apparatus  100  may further include a sensing unit (not illustrated) which senses a movement of the electronic apparatus  100  and may move a viewpoint of the panoramic image displayed on the display apparatus  200  based on a movement of the electronic apparatus  100  sensed by the sensing unit. 
     The sensing unit may include various sensing circuitry, such as, for example, and without limitation, at least one of a gravity sensor, a geomagnetic sensor, a gyro sensor, an acceleration sensor, etc. and may sense a movement characteristic of the electronic apparatus  100  such as a rotation direction, a rotation angle, a tilt or the like. 
     For example, the processor  130  may control the communicator  110  to transmit a control signal to move a viewpoint of a panoramic image displayed on the display apparatus  200  based on a movement change, sensed by the sensing unit, of the electronic apparatus  100 , to the display apparatus  200 . 
     For example, instead of inputting a dragging manipulation to the right as explained with reference to  FIG. 9 , even in case that the sensing unit senses the electronic apparatus  100  moving to the left, the processor  130  may transmit a control signal to display from the image of the first viewpoint  500 A of the panoramic image  500  illustrated in  FIG. 5  to the image of the fourth viewpoint  500 D that is moved by as much as a distance that the electronic apparatus  100  moved to the left in a clockwise direction, to the display apparatus  200 . 
     As another example embodiment, instead of inputting a dragging manipulation in a downward direction with reference to  FIG. 10 , even in case that the sensing unit senses the electronic apparatus  100  being uplifted, the processor  130  may control the communicator  110  to transmit a control signal to display the image of the fifth viewpoint  500 E that is moved in a upward direction by as much as the electronic apparatus  100  was moved in a upward direction from the image of the first viewpoint  500 A of the panoramic image  500  of  FIG. 5 . 
       FIG. 11  is a diagram illustrating example operations of zooming in and zooming out a panoramic image displayed on the display apparatus  200  using gesture inputs to the electronic apparatus  100  according to various example embodiments of the present disclosure. 
     An example gesture used in zooming in/out will be described herein. For example, after two points are touched on the second area  920 , if a manipulation of changing a distance of the two points is sensed, the processor  130  may control the communicator  110  to transmit a control signal to zoom in or zoom out an image which is displayed on the display apparatus  100  according to the changed distance. 
     As illustrated in  FIG. 11 , if two points are touched on the second area  920  are touched and a manipulation of increasing a distance between the touched two points is sensed, the processor  130  transmits a control signal to zoom in an image displayed on the display apparatus  100 , to the display apparatus  200 . In this case, since the operation of zooming in the image is carried out, a highlighted area which indicates the viewpoint of the panoramic image displayed on the display apparatus  200  is decreased from d 1  to d 2 . On the other hand, if an operation of zooming out the image is carried out, the width may increase. 
     Meanwhile, according to an example embodiment, a user may watch image of different viewpoints because the display apparatus  200  and the electronic apparatus  100  may display panoramic images of respectively different viewpoints. 
     Specifically, if a point on the substantially circular UI displayed on the touch screen  120  is touched for more than a pre-set period of time, the processor  130  may display an image of a viewpoint of the panoramic image matching the point touched for more than the pre-set period of time, on the touch screen  120 . These example operations will be described in greater detail below with reference to  FIG. 12 . 
     Referring to  FIG. 12 , if the third point  10 C of the substantially circular UI  10  is touched for more than a pre-set period of time, a thumbnail  12  of the image of the third viewpoint  500 C matching (e.g., corresponding to) the third point  10 C appears and if the thumbnail  12  is dragged and dropped on the second area  920 , the image of the third viewpoint  500 C may be displayed on the entire area of the touch screen  120 . The thumbnail appearance may be omitted and the drag and drop may also not be requested. Thus, with, for example, a manipulation of touching the third point  10 C for more than a pre-set period of time, the touch screen may display the image of the third viewpoint  500 C on the entire area. 
     In case that a panoramic image is stored in the display apparatus  200  but not stored in the electronic apparatus  100 , if a manipulation of touching the third point  10 C is sensed for more than a pre-set period of time, the electronic apparatus  100  may request the display apparatus  200  to provide the image of the third viewpoint  500 C, receive the image of the third viewpoint  500 C from the display apparatus  200  and display the image of the third viewpoint  500 C. 
     The above description is limited to use a touch manipulation for more than a pre-set period of time on the substantially circular UI but it is not limited thereto. If the touch screen  120  is composed of a pressure sensor, it is also possible to use a manipulation of pressing with power greater than a pre-set power. 
     Referring to  FIG. 12 , regarding the substantially circular UI  10 , the first area  10 - 1  of the circular UI  10  may be highlighted to indicate a viewpoint displayed on the display apparatus  200  and the third area  10 - 3  of the circular UI  10  may be highlighted to indicate a viewpoint displayed on the electronic apparatus  100 . Each of the highlighted areas may have different forms for a user to easily discern that one area is for the display apparatus  200  and the other area is for the electronic apparatus  100 . 
     According to the example embodiment, the user may watch the images of respectively different viewpoints of the panoramic image through the display apparatus  200  and the electronic apparatus  100 . 
     If only one substantially circular UI  10  is displayed as illustrated in  FIG. 12 , the substantially circular UI may be used in controlling each of the images on the display apparatus  200  and the electronic apparatus  100 . For example, in a state that the display apparatus  200  and the touch screen  120  respectively display an image of a viewpoint of a panoramic image, if a point of the substantially circular UI  10  is touched and a control authority over the electronic apparatus  100  is set on the substantially circular UI  10 , the touch screen  120  may be controlled to display an image of a viewpoint matching the touched point. Alternatively, if a control authority over the display apparatus  200  is set on the substantially circular UI  10 , the processor  130  may transmit a control signal to display an image of a viewpoint matching a touch point, to the display apparatus  200 . 
     The processor  130  may set a control authority over the electronic apparatus  100  on the circular UI  10  or set a control authority over the display apparatus  200  based on a user manipulation. 
     For example, as illustrated in  FIG. 12 , in a state that the display apparatus  200  displays the image of the first viewpoint  500 A of the panoramic image and the touch screen  120  displays the image of the third viewpoint  500 C of the panoramic image, if a touch is recognized on the second area  920 , the processor  130  sets a control authority over the electronic apparatus  100  on the substantially circular UI  10 . Then, a touch manipulation made on the circular UI  10  may be recognized as a manipulation to control an image on the touch screen  120 . 
     On the other hand, if the third area  10 - 3  of the substantially circular UI  10  corresponding to the image of the third viewpoint  500 C displayed on the electronic apparatus  100  is touched, the processor  130  sets a control authority over the electronic apparatus  100  on the substantially circular UI  10 . In the same method, if the first area  10 - 1  of the substantially circular UI  10  corresponding to the image of the first viewpoint  500 A displayed on the display apparatus  200  is touched, the processor  130  sets a control authority over the display apparatus  200  on the substantially circular UI  10 . Accordingly, a follow-up touch manipulation made on the substantially circular UI  10  may be recognized as a manipulation to control an image of the display apparatus  200 . 
       FIG. 13  is a diagram illustrating an example method of displaying an image of a viewpoint of a panoramic image on the electronic apparatus  100  in a method different from the method described with reference to  FIG. 12 . 
     Referring to  FIG. 13 , the processor  130  may control the touch screen  120  to further display a second substantially circular UI  20  to control electronic apparatus  200  in addition to the first substantially circular UI  10  to control the display apparatus  200 . In this example, if a third point  20 C of the second substantially circular UI  20  is touched, the processor  130  may display the image of the third viewpoint  500 C matching (e.g., corresponding to) the third point  20 C that is touched on the panoramic image, on the touch screen  120 . 
     For example, if the third point  20 C of the second substantially circular UI  20  is touched, the processor  130  may transmit information regarding the third point  20 C to the display apparatus  200  and the display apparatus  200  storing the panoramic image may transmit the image of the third viewpoint  500 C matching (e.g., corresponding to) the third point  20 C to the electronic apparatus  100 . The processor  130  may control the touch screen  120  to display the received image of the third viewpoint  500 C. If the panoramic image is stored in the electronic apparatus  100 , the electronic apparatus  100  may directly display the image of the third viewpoint  500 C matching the third point  20 C without receiving the image from the display apparatus  200 . 
     In addition, the processor  130  controls the touch screen  120  to display the third area  20 - 3  of the second substantially circular UI  20  to be highlighted so that a user may recognize a viewpoint of an image displayed on the touch screen  120  and the processor  130  controls the touch screen  120  to display the first area  10 - 1  of the first substantially circular UI  10  to be highlighted so that the user may recognize a viewpoint of an image displayed on the display apparatus  100 . 
     According to the example embodiment explained with reference to  FIG. 13 , since the plurality of substantially circular UIs respectively corresponding to the display apparatus  200  and the electronic apparatus  100  are displayed, it is possible to control an image of the display apparatus  200  and an image of the electronic apparatus  100  at the same time. 
     According to an example embodiment, in a situation that display apparatus  200  and the electronic apparatus  100  display images of different viewpoints at the same time, the images of the display apparatus  200  and the electronic apparatus  100  may be exchanged based on a user manipulation. 
     For example, in a state that the display displays an image of the first viewpoint of the panoramic image and the touch screen  120  displays an image of the second viewpoint of the panoramic image, if the image of the second viewpoint displayed on the touch screen  120  is touched and a dragging manipulation in an outside direction of the electronic apparatus  100  is sensed, the communicator  110  may be controlled to display the image of the first viewpoint on the touch screen  120  and to transmit a control signal to display the image of the second viewpoint to the display apparatus  200 . Descriptions regarding this operation will be further described in greater detail below with reference to  FIG. 14 . 
     Referring to  FIG. 14 , in a state that the image of the first viewpoint  500 A of the panoramic image is displayed on the display apparatus  200  and the image of the third viewpoint  500 C of the panoramic image is displayed on the touch screen  120  of the electronic apparatus  100 , if the image of the third viewpoint  500 C displayed on the touch screen  120  is touched and a dragging manipulation in an outside direction of the electronic apparatus or the outside direction in which the display apparatus  200  is located is sensed, the processor  130  controls the communicator  110  to transmit a control signal to display the image of the third viewpoint  500 C on the display apparatus  200 , to the display apparatus  200  and controls the touch screen  120  to display the image of the first viewpoint  500 A. 
     In this example, according to an example embodiment, if the image of the third viewpoint  500 C is simply touched and a dragging manipulation in an outside direction is sensed, the above described operation may be operated. According to another example embodiment, if the image of the third viewpoint  500 C is touched for more than a pre-set period of time and a dragging manipulation to an outside direction is sensed when the image of the third image  500 C is a movable state, the above described operation may be performed. If the image of the third viewpoint  500 C is touched for more than a pre-set period of time to notify a user that the image of the third viewpoint  500 C is in the movable state, a size of the image of the third viewpoint  500 C may be decreased as illustrated in  FIG. 14 . 
     In the above example, it is explained that the touch manipulation for more than the pre-set period of time is used for exchanging images but it is not limited thereto. If the touch screen  120  includes a pressure sensor, it is also possible to use a manipulation of pressing with power greater than a pre-set power. 
     After the image exchange, as illustrated in  FIG. 14 , a highlight form (a light pattern) applied on the first area  10 - 1  of the substantially circular UI  10  corresponding to the display apparatus  200  is applied to the third area  10 - 3  and a form (a dark pattern) applied on the third area  10 - 3  corresponding to the electronic apparatus  100  is applied to the first area  10 - 1 . 
     If an entire panoramic image is stored in one of the display apparatus  200  and the electronic apparatus  100 , when images are exchanged, an apparatus storing the entire panoramic image may transmit an image that the apparatus itself was displaying to the other apparatus and receive information of a viewpoint of the image which was being displayed on the other apparatus. In other words, it is not necessary for the apparatuses to transmit an image to each other and it is only necessary for one of the apparatuses to transmit viewpoint information to the other apparatus. Therefore, an amount of data to be transferred may be decreased. 
     For example, in a situation that the entire panoramic image is stored only in the display apparatus  200  and the entire panoramic image is not stored in the electronic apparatus  100 , if a dragging manipulation illustrated in  FIG. 14  is sensed, the processor  130  may receive the image of the first viewpoint  500 A displayed on the display apparatus  200 , from the display apparatus  200  and transmit information regarding a viewpoint corresponding to the image of the third viewpoint  500 C (or information regarding an angle) displayed on the touch screen  120 , to the display apparatus  200 . 
     On the other hand, in a state that the entire panoramic image is stored only in the electronic apparatus  100  and the entire panoramic image is not stored in the display apparatus  200 , if a dragging manipulation illustrated in  FIG. 12  is sensed, the processor  130  may receive information regarding a viewpoint corresponding to the image of the first viewpoint  500 A displayed on the display apparatus  200 , from the display apparatus  200  through the communicator  110 , and may transmit the image of the third viewpoint  500 C displayed on the touch screen  120  to the display apparatus  200 . 
     The above example embodiments may be readily used when a user desires to watch an image that was displayed on the electronic apparatus  100  with a small screen, on the display apparatus  200  with a big screen. 
       FIG. 15  is a diagram illustrating an example method of moving an image viewpoint according to another example embodiment of the present disclosure. 
     Referring to  FIG. 15 , if the center  11  of the substantially circular UI is touched, the processor  130  may control the communicator  110  to transmit a control signal to display an image of a default viewpoint of a panoramic image, to the display apparatus  200 .  FIG. 15  illustrates that the default viewpoint is set as a first viewpoint and if the center  11  of the substantially circular UI  10  is touched in a state that the image of the third viewpoint  500 C is displayed on the display apparatus  200 , a control signal to display the image of the first viewpoint  500 A is transmitted to the display apparatus  200 . 
     According to the example embodiment, with a manipulation of selecting the center of the substantially circular UI, an image of the panoramic image may return exactly to the image of the default viewpoint. 
       FIG. 16  is a flowchart illustrating an example method of controlling the electronic apparatus  100  according to an example embodiment. Meanwhile, the example method of controlling the electronic apparatus  100  includes the various example embodiments explained with reference to  FIGS. 1 to 15 and 17  in addition to the example embodiments explained with reference to  FIG. 16 . Therefore, repetitive explanations are omitted. 
     Referring to  FIG. 16 , the display apparatus  200  displaying an image of a viewpoint of a panoramic image is operably connected with the electronic apparatus  100  in operation S 1610 . 
     In this case, the connection may be carried out through various wireless communication methods such as a Bluetooth, NFC, WiFi Direct and the like. 
     For example, if a panoramic image being displayed on the display apparatus  200  is sensed, the display apparatus  200  may request for a connection to the electronic apparatus  100  and the display apparatus  200  may be automatically connected with the electronic apparatus  100 . 
     If the display apparatus  200  is connected with the electronic apparatus  100 , the display apparatus  200  may transmit state information to the electronic apparatus  100 . The state information may include information regarding a viewpoint of an image displayed on the display apparatus  200 . 
     When the display apparatus  200  is connected with the electronic apparatus  100 , the electronic apparatus  100  displays a substantially circular UI in operation S 1620 . 
     Meanwhile, it is not necessary for the UI to be circular and the UI may have various shapes. For example, the UI may be a polygon such as a tetragon, a pentagon and the like. It is unnecessary for the UI to have a closed shape and the UI may be a circular shape or a polygon part of which is opened. In other words, if the UI has a shape appropriate for a panoramic image manipulation, the UI is not limited to a certain shape. In addition, a UI may be called “a mini map” to control the panoramic image in addition to being called “a substantially circular UI.” 
     If a point on the substantially circular UI is touched, the electronic apparatus  100  transmits a control signal to display an image of a viewpoint matching a touch point of the panoramic image, to the display apparatus  200  in operation S 1630 . 
     In this example, the electronic apparatus  100  may transmit information regarding a viewpoint matching the touch point and the control signal to the display apparatus  200  and the display apparatus  200  may display an image of a viewpoint corresponding to the received information regarding the viewpoint of the panoramic image pre-stored in the display apparatus  200 . Alternatively, if the panoramic image is not stored in the display apparatus  200  but stored in the electronic apparatus  100 , the electronic apparatus  100  may transmit the image of the viewpoint matching the touch point and a control signal or transmit an entire panoramic image, the information regarding the viewpoint matching the touch point and the control signal to the display apparatus  200 . 
       FIG. 17  is a diagram illustrating an example method of displaying images of various viewpoints of a panoramic image on a plurality of apparatuses according to an example embodiment of the present disclosure. 
     Referring to  FIG. 17 , a plurality of electronic apparatuses  100 - 1 ,  100 - 2 ,  100 - 3  may be operably connected with the display apparatus  200  at the same time. 
     In a state that the panoramic image is stored in the display apparatus  200  and the image of the first viewpoint  500 A of the panoramic image is displayed on the display apparatus  200 , the display apparatus  200  may transmit state information to each of the plurality of electronic apparatuses  100 - 1 ,  100 - 2 ,  100 - 3 , and accordingly, a mode of the plurality of electronic apparatuses  100 - 1 ,  100 - 2 ,  100 - 3  may be converted to a panoramic image display mode. 
     According to a request of the plurality of electronic apparatuses  100 - 1 ,  100 - 2 ,  100 - 3 , the display apparatus  200  may transmit an image of a viewpoint of the panoramic image to the plurality of electronic apparatuses  100 - 1 ,  100 - 2 ,  100 - 3 . For example, the plurality of electronic apparatuses  100 - 1 ,  100 - 2 ,  100 - 3  may request for an image to the display apparatus  200  through a manipulation on the circular UI. 
     The plurality of electronic apparatuses  100 - 1 ,  100 - 2 ,  100 - 3  display the received image. For example, as illustrated in  FIG. 17 , the first electronic apparatus  100 - 1  may display the image of the second viewpoint  500 B received from the display apparatus  200 , the second electronic apparatus  100 - 2  may display the image of the third viewpoint  500 C received from the display apparatus  200  and the third electronic apparatus  100 - 3  may display the image of the fourth viewpoint  500 D received from the display apparatus  200 . 
     Therefore, a user may watch images of various viewpoints of the panoramic image at once through the plurality of electronic apparatuses  100 - 1 ,  100 - 2 ,  100 - 3  and the display apparatus  200 . 
     In the case that the plurality of electronic apparatuses  100 - 1 ,  100 - 2 ,  100 - 3  are connected with the display apparatus  200 , only one apparatus among these may have a control authority over the display apparatus  200 . The apparatus having the control authority may move a viewpoint of the panoramic image displayed on the display apparatus  200  through a manipulation on the substantially circular UI or enlarge or minimize and/or reduce an image. The other electronic apparatuses without the control authority may receive an image from the display apparatus  200  only. 
     According to the various example embodiments, when a user watches a panoramic image on a big screen such as a TV screen, various functions such as converting a viewpoint by a mobile apparatus, directly moving to a desired viewpoint, enlarging/minimizing an image, watching images of different viewpoints at the same time and the like may be readily controlled. 
     Meanwhile, the example embodiments may be embodied in a memory medium which can be read by a computer or the like using software, hardware or a combination thereof. By a hardware-based embodiment, the example embodiments may be embodied by using at least one of processing circuitry including, but not limited to a dedicated processor, a CPU, Application Specific Integrated Circuits (ASICs), digital signal processors (DSPs), digital signal processing apparatuses (DSPDs), programmable logic apparatuses (PLDs), field programmable gate arrays (FPGAs), processors, controllers, micro-controllers, microprocessors and an electronic unit for performing another function. In some cases, the example embodiments may be embodied as the processor  130  itself. By a software-based embodiment, the procedures and functions explained in the example embodiments may be respectively embodied as separate software modules. Each of the software modules may perform at least one of the functions and operations explained in the disclosure. 
     Meanwhile, the method of controlling the electronic apparatus according to the various example embodiments may be stored in a non-transitory readable medium. The non-transitory readable medium may be used by being installed in various apparatuses. 
     The non-transitory computer readable medium is readable by an apparatus. For example, programs of performing the above-described various methods can be stored in a non-transitory computer readable medium such as a CD, a DVD, a hard disk, a Blu-ray disk, universal serial bus (USB), a memory card, ROM, or the like, and can be provided. 
     The foregoing example embodiments are merely examples and are not to be construed as limiting the present disclosure. The present disclosure can be readily applied to other types of apparatuses. Also, the description of example embodiments are intended to be illustrative, and not to limit the scope of the claims and their equivalents, and many alternatives, modifications, and variations will be apparent to those skilled in the art.