Patent Publication Number: US-10778927-B2

Title: Display system, display apparatus, and controlling method thereof

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a Continuation Application of U.S. application Ser. No. 15/393,564, filed Dec. 29, 2016, which claims priority from Korean Patent Application No. 10-2016-0001117, filed on Jan. 5, 2016 in the Korean Intellectual Property Office, the disclosures of which are incorporated herein by reference in their entireties. 
    
    
     BACKGROUND 
     1. Field 
     Apparatuses and methods consistent with exemplary embodiments relate to controlling method thereof, and more particularly, to a display apparatus capable of acquiring apparatus information of an external apparatus, a controlling method thereof, and a display system including the display apparatus. 
     2. Description of the Related Art 
     With the advancement of digital display technology, it has become possible to connect various types of external apparatuses that provide video content, such as a set-top box, a digital versatile disc (DVD) player, an audio player, and the like to a display apparatus. In general, remote controls respectively provided for the external apparatuses are used in order to control the external apparatuses, but as the number of interconnected devices increases, the number of remote controls also increases. 
     Therefore, an integrated or universal remote control has been developed so as to control multiple electronic apparatuses through one remote device. However, a process of setting a correct control code set is required to control an electronic apparatus that is not registered in the integrated remote controller. In other words, a user is expected to input model information, manufacturer information, and the like of an external electronic apparatus one by one in order to pair the integrated remote controller with the appropriate device. 
     However, this process is very complicated and thus is frequently ignored by users, and the users continue to use several dedicated remote controls for individual apparatuses. 
     Therefore, there is a need for a way of conveniently setting up an integrated remote control. 
     SUMMARY 
     Exemplary embodiments overcome the above disadvantages and other disadvantages not described above. Also, the present invention is not required to overcome the disadvantages described above, and an exemplary embodiment may not overcome any of the problems described above. 
     Exemplary embodiments provide a display apparatus capable of acquiring apparatus information of an external apparatus, a controlling method thereof, and a display system including the display apparatus. 
     According to an aspect of an exemplary embodiment, a display system includes a display apparatus configured to display an image, an image providing apparatus configured to provide an image, and a remote control device configured to transmit a control signal for controlling the image providing apparatus. The display apparatus may be further configured to control the remote control device to transmit at least one control signal to the image providing apparatus, and acquire apparatus information of the image providing apparatus by analyzing an image provided by the image providing apparatus to the display apparatus in response the image providing device receiving the at least one control signal transmitted by the remote control device. 
     According to an aspect of another exemplary embodiment, a display apparatus includes a communicator configured to communicate with a remote control device; a display configured to display an image; and a processor configured to control the communicator to transmit, to the remote control device, a control command which controls the remote control device to transmit a control signal to the image providing apparatus, and acquire apparatus information of the image providing apparatus by analyzing an image that is provided by the image providing apparatus in response to the image providing apparatus receiving the control signal transmitted by the remote control device. 
     According to an aspect of another exemplary embodiment, a method of controlling a display apparatus includes transmitting, to a remote control device, a control command, which controls the remote control device to transmit a control signal to an image providing apparatus; and acquiring apparatus information of the image providing apparatus by analyzing an image that is provided to the display apparatus by the image providing apparatus in response to the image providing apparatus receiving the control command transmitted by the remote control device. 
     According to an aspect of another exemplary embodiment, a computer-readable recording medium including a program for performing a method of controlling a display apparatus. The method may include transmitting, to a remote control device, a control command, which enables the remote control device to transmit a control signal, and acquiring apparatus information of the image providing apparatus by analyzing an image provided from the image providing apparatus connected to the display apparatus after transmitting the control command. 
     According to an aspect of another exemplary embodiment, there is provided a non-transitory computer-readable storage medium storing instructions which, when executed by a processor, cause the processor to perform operations comprising: receiving, by a display device, a first image from an image output device connected to the display device, in response to receiving the first image, transmitting, by the display device, a control command for a remote control device to transmit a control signal, the remote control device being associated with the image output device, in response to transmitting the control command, receiving, by the display device, a second image from the image output device, comparing, by the display device, the first image and the second image to identify a difference between the first image and the second image, and determining, by the display device, a device type of the image output device based on the difference between the first image and the second image. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWING FIGURES 
       The above and/or other aspects will be more apparent by describing certain exemplary embodiments with reference to the accompanying drawings, in which: 
         FIG. 1  is a view illustrating a display system according to an exemplary embodiment; 
         FIG. 2  is a block diagram of a configuration of a display apparatus according to an exemplary embodiment; 
         FIGS. 3 and 4  are views illustrating methods of analyzing an image of a display apparatus according to various exemplary embodiments n; 
         FIG. 5  is a view illustrating a method of acquiring apparatus information of an image providing apparatus by using a display apparatus, according to an exemplary embodiment; 
         FIG. 6  is a view illustrating a user interface (UI) screen displaying a process of acquiring apparatus information of an image providing apparatus by using a display apparatus, according to an exemplary embodiment; 
         FIG. 7  is a view illustrating a method of acquiring apparatus information of an image providing apparatus by using a display apparatus, according to another exemplary embodiment; 
         FIG. 8  is a view illustrating image change sensing of a display apparatus according to an exemplary embodiment; 
         FIG. 9  is a view illustrating source list providing of a display apparatus according to an exemplary embodiment; 
         FIGS. 10 through 12  are flowcharts of methods of controlling a display apparatus according to various exemplary embodiments; and 
         FIG. 13  is a block diagram of a detailed configuration of a display apparatus according to an exemplary embodiment. 
     
    
    
     DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Certain exemplary embodiments will now be described in greater detail with reference to the accompanying drawings. 
     In the following description, same drawing reference numerals are used for the same elements even in different drawings. The matters defined in the description, such as detailed construction and elements, are provided to assist in a comprehensive understanding of the invention. Thus, it is apparent that the exemplary embodiments can be carried out without those specifically defined matters. Also, well-known functions or constructions are not described in detail since they would obscure the invention with unnecessary detail. 
     The terms used herein are selected as general terms that are currently widely used in consideration of their functions in the present invention. However, these terms may depend on intentions or legal or technical interpretations of those skilled in the art, emergences of new technologies, and the like. Also, there may be some terms arbitrarily selected by an applicant. These terms may be construed as meanings defined in the present specification and may be construed based on whole contents of the present specification and common technical knowledge of the art as long as there are no detailed definitions of the terms. 
     Also, the same reference numerals or symbols described in the attached drawings denote parts or elements that actually perform the same functions. For convenience of descriptions and understanding, the same reference numerals or symbols are used and described in different exemplary embodiments. In other words, although elements having the same reference numerals are all illustrated in a plurality of drawings, the plurality of drawings do not mean one exemplary embodiment. 
     Also, the terms “first,” “second,” etc. may be used to describe diverse components, but the components are not limited by the terms. The terms are only used to distinguish one component from the others. For example, used orders, arrangement orders, or the like of elements that are combined with these ordinal numbers may not be limited by the numbers. If necessary, the ordinal numbers may be respectively replaced and used. 
     The singular expression also includes the plural meaning as long as it does not differently mean in the context. In the present application, the terms “include” and “comprise” designate the presence of features, numbers, steps, operations, components, elements, or a combination thereof that are written in the specification, but do not exclude the presence or possibility of addition of one or more other features, numbers, steps, operations, components, elements, or a combination thereof. 
     In the exemplary embodiment of the present disclosure, the term “module,” “unit,” or “part” is referred to as an element that performs at least one function or operation, and may be implemented with hardware, software, or a combination of hardware and software. In addition, a plurality of “modules,” a plurality of “units,” a plurality of “parts” may be integrated into at least one module or chip except for a “module,” a “unit,” or a “part” which has to be implemented with specific hardware, and may be implemented with at least one processor (not shown). 
     Also, when any part is connected to another part, this includes a direct connection and an indirect connection through another medium. Unless otherwise defined, when any part includes any element, it may mean that any part further include other elements without excluding other elements. 
     Hereinafter, the present invention will be described in detail with reference to the attached drawings. 
       FIG. 1  is a view illustrating a display system  1000  according to an exemplary embodiment. 
     As shown in  FIG. 1 , the display system  1000  includes a display apparatus  100 , an image providing apparatus  200 , and a remote control device  300 . 
     The display apparatus  100  may be a TV as shown in  FIG. 1 , but this is merely an exemplary embodiment. The display apparatus  100  may be realized as various types of apparatuses such as a smartphone, a tablet personal computer (PC), a desktop PC, a projector, and the like. 
     The image providing apparatus  200  may provide the display apparatus  100  with an image. As shown in  FIG. 1 , the image providing apparatus  200  may be connected to the display apparatus  100  by wire. For example, the image providing apparatus  200  may provide the image through a High Definition Multimedia Interface (HDMI) port of the display apparatus  100 . However, the image providing apparatus  200  is not limited thereto and may be realized to perform a wireless communication so as to provide the display apparatus  100  with the image. 
     The image providing apparatus  200  may be realized as various types of apparatuses such as a digital versatile disc (DVD) player, a Blue-ray disc (BD) player, a PC, a Universal Serial Bus (USB) device, a video game console, a home theater system, an audio player, a set-top box, an over-the-air (OTA) antenna, an over-the-top (OTT) device, and the like. 
     The remote control device  300  may be implemented as various types of devices capable of transmitting a control signal for controlling other apparatuses. For example, the remote control device  300  may be an dedicated remote control capable of controlling only a particular apparatus, an integrated remote control (e.g., Multi-Brand Remote (MBR), otherwise known as a universal remote control) capable of controlling multiple apparatuses, or a portable device such as a smartphone, a Personal Digital Assistant (PDA), or the like. 
     The remote control device  300  may include a direction key button, a number key button, a menu button, a touch pad, and the like. The remote control device  300  may generate various types of control signals corresponding to the direction key button, the touch pad, and other buttons. 
     The display apparatus  100  may perform an analysis with respect to an image provided from the image providing apparatus  200  in order to acquire apparatus information of the image providing apparatus  200  and may perform various operations by using the acquired apparatus information. For example, the display apparatus  100  may set an integrated remote control, which enables the remote control device  300  to control the image providing apparatus  200  by using the acquired apparatus information of the image providing apparatus  200 , with respect to the remote control device  300 . 
     As another example, the display apparatus  100  may update an apparatus name (e.g., apparatus type, model name, etc.) of the image providing apparatus  200  in the display apparatus  100  based on the acquired apparatus information of the image providing apparatus  200 . The apparatus information may be any information that may be used identify the model, type, or manufacturer of the image providing apparatus  200 . 
     Hereinafter, the display apparatus  100  in the display system  1000  described above will be described in more detail. 
       FIG. 2  is a block diagram illustrating the display apparatus  100  according to an exemplary embodiment. 
     As shown in  FIG. 2 , the display apparatus  100  includes a communicator  110 , a display  120 , and a processor  130 . 
     The communicator  110  is an element that performs wireless or wired communications with various types of external apparatuses. Specifically, the communicator  110  may include an input/output (I/O) port for a wired connection to an external apparatus and various types of communication chips such as a Wi-Fi chip, a Bluetooth chip, a near-field communication (NFC) chip, a wireless communication chip, and the like for performing wireless communications. 
     The communicator  110  may communicate with the image providing apparatus  200  to receive an image from the image providing apparatus  200 . Also, the communicator  110  may transmit a control command, which enables the remote control device  300  to transmit a specific control signal to the remote control device  300 . According to as aspect of an exemplary embodiment, the communicator  110  may receive the control signal transmitted from the remote control device  300  in order to control the image providing apparatus  200 . 
     The display  120  is an element that displays various types of screens under control of the processor  130 . 
     For example, the display  120  may be implemented as a Liquid Crystal Display (LCD), a Cathode-Ray Tube (CRT), a Plasma Display Panel (PDP), an Organic Light Emitting Diode (OLED) display, or a Transparent OLED (TOLED) display, or the like. Also, the display  120  may be implemented as a touch screen type capable of sensing a touch manipulation of a user. 
     The display  120  may display an image provided from the image providing apparatus  200 . The display  120  may also display various types of user interface (UI) screens that are preloaded. 
     The processor  130  is an element for controlling an overall operation of the display apparatus  100 . 
     For example, the processor  130  may include a Central Processing Unit (CPU), a Random Access Memory (RAM), a Read-Only Memory (ROM), and a system bus. Here, the ROM is an element that stores a command set for system booting, and the CPU boots a system by copying an operating system (OS) stored in a storage unit of the display apparatus  100  into the RAM and executing the OS according to a command stored in the ROM. Once the system is completely booted, the CPU may perform various operations by copying various types of applications stored in the storage unit into the RAM and executing the applications. The processor  130  has been described above as including merely one CPU but may be implemented as a plurality of CPUs (or Digital Signal Processors (DSPs), System on Chips (SoCs), or the like). 
     In particular, the processor  130  may acquire apparatus information of the image providing apparatus  200  by cooperating with the remote control device  300 . In this case, the processor  130  may acquire information of the image providing apparatus  200  according to a method of complying with attributes of the remote control device  300 . In detail, the processor  130  may acquire the information of the image providing apparatus  200  by using different methods depending on whether the remote control device  300  is an exclusive remote controller of the image providing apparatus  200  or the remote control device  300  is an integrated remote controller (e.g., MBR) and not the exclusive remote controller of the image providing apparatus  200 . 
     Hereinafter, a method of acquiring apparatus information of the image providing apparatus  200  by using the display apparatus  100  when the remote control device  300  is an integrated remote control according to an exemplary embodiment will be described. 
     If the remote control device  300  is the integrated remote control (i.e., a universal remote control), the remote control device  300  may not be able to control the image providing apparatus  200  at first, and thus a setup process for controlling the image providing apparatus  200  may be required. For this, a control code set for controlling the image providing apparatus  200  may be specified. 
     The image providing apparatus  200  may operate by different control code sets according to the specific manufacturer of the image providing apparatus  100 . Here, a control code set refers to a set of information (e.g., a set of waveforms) assigned to respective keys of the remote control device  300  and information about signals generated when the respective keys are selected. Therefore, a manufacturer of the image providing apparatus  200  may need to be identified first in order to control the image providing apparatus  200 . 
     However, the display apparatus  100  may not be able to identify the manufacturer of the image providing apparatus  200  merely through a connection of the image providing apparatus  200  to the display apparatus  100 . Therefore, the processor  130  may control the communicator  110  to transmit a control command, which enables the remote control device  300  to transmit a specific control signal to the remote control device  300 , and may acquire apparatus information of the image providing apparatus  200  by analyzing an image provided from the image providing apparatus  200  after transmitting the control command. Here, the apparatus information may include information about a manufacturer of the image providing apparatus  200 . 
     In detail, the processor  130  may transmit a plurality of different control commands to the remote control device  300  so as to enable the remote control device  300  to sequentially transmit control signals corresponding to different manufacturers. 
     This transmission of a control command may start if an image providing apparatus is newly discovered (i.e., if a new image providing apparatus  200  is sensed by the display apparatus  100 ). If the new image providing apparatus  200  is sensed, the processor  130  may control the communicator  110  to transmit a control command, which enables the remote control device  300  to transmit a specific control code, to the remote control device  300 . Alternatively, this transmission of a control command may start according to a manipulation of the user. This will be described in more detail later with reference to  FIG. 6 . 
     The control signal that the remote control device  300  transmits according to the control command received from the display apparatus  100  may be a control signal that enables the image providing apparatus  200  to provide the display apparatus  100  with a particular image. 
     Here, the particular image may be an image including contents through which the processor  130  may recognize the apparatus information of the image providing apparatus  200  through an image analysis. For example, the particular image may be an image including a manufacturer logo of the image providing apparatus  200 . In general, the manufacturer logo of the image providing apparatus  200  may be included in a menu screen provided by the image providing apparatus  200 . Therefore, the control signal that the remote control device  300  transmits under control of the display apparatus  100  may be a control signal that enables the image providing apparatus  200  to provide the display apparatus  100  with the image of the menu screen. This is merely an example, and the particular image may be any image including contents through which the processor  130  recognizes the apparatus information of the image providing apparatus  200  through an image analysis. 
     For example, acquiring of apparatus information through a logo will be described in more detail with reference to  FIG. 3 . 
       FIG. 3  is a view illustrating a menu screen of the image providing apparatus  200 , according to an exemplary embodiment. 
     In  FIG. 3 , a menu screen  410  of the image providing apparatus  200 , which is provided for the display apparatus  100  according to a control signal transmitted from the remote control device  300 , may include a logo  41 . The processor  130  may determine whether the logo  41  belongs to any known manufacturer, based on the logos of manufacturers preloaded in the display apparatus  100 . Therefore, the processor  130  may acquire apparatus information of the image providing apparatus  200 . 
     As another example, the control signal that the remote control device  300  transmits under control of the display apparatus  100  may be a control signal that enables the image providing apparatus  200  to provide the display apparatus  100  with an image of a particular channel. If the image providing apparatus  200  is a set-top box, the same channel number may provide images of different broadcasting stations according to manufacturers of set-top boxes. For example, CBS may correspond to channel number 1 in a set-top box of company A, and NBC may correspond to channel number 1 in a set-top box of company B. The processor  130  may analyze an image provided from the image providing apparatus  200  after transmitting a control command enabling the remote control device  300  to transmit a control signal enabling an image of channel number 1 to be provided for the display apparatus  100 . If there is a CBS logo in the image, the processor  130  may determine the image providing apparatus  200  as a set-top box of company A and, if there is an NBC logo in the image, determine the image providing apparatus  200  as a set-top box of company B. Hereinafter, acquiring of apparatus information through a particular channel image will be described in more detail with reference to  FIG. 4 . 
       FIG. 4  illustrates an example of a particular channel image of the image providing apparatus  200 . 
     As shown in  FIG. 4 , a particular channel image  420  of the image providing apparatus  200 , which is provided for the display apparatus  100  according to a control signal transmitted from the remote control device  300 , may include a channel number  45  and a channel logo  43 . The processor  130  may detect whether the channel logo  43  is a logo of a known broadcast network, based on logos of known broadcast networks preloaded in the display apparatus  100 . Also, the processor  130  may recognize what number the channel number  45  is, through a character recognition method such as optical character recognition (OCR) or the like. Therefore, the processor  130  may detect that the manufacturer of the image providing apparatus  200  is a manufacturer that associates the channel number  45  to the logo  43 , and thus may acquire apparatus information of the image providing apparatus  200 . 
     In other words, as described above, if an image is provided from the image providing apparatus  200  and thus a change is currently sensed from the image after transmitting a control command, the processor  130  may acquire the apparatus information of the image providing apparatus  200  by analyzing the changed image. 
     As described above, the display apparatus  100  may acquire the apparatus information of the image providing apparatus  200  by controlling the remote control device  300 . Hereinafter, this process will be described in more detail with reference to  FIG. 5 . 
       FIG. 5  is a view illustrating a process of acquiring apparatus information of the image providing apparatus  200  by using the display apparatus  100 , according to an exemplary embodiment. 
     The display apparatus  100  may transmit a control command to a remote control device  300 ′ ({circumflex over ( 1 )}). Here, the control command may be for transmitting a control signal included in a control code set corresponding to a manufacturer of the image providing apparatus  200 . In this case, the display apparatus  100  may transmit a control command, which is to transmit a control signal included in a control code set corresponding to a manufacturer randomly selected from several manufacturers or a control signal included in a control code set of a manufacturer having a highest market share (i.e., most popular brand), to the remote control device  300 ′. A control command that is first transmitted may be referred to as a first control command. 
     The remote control device  300 ′ may include a communicator  310 , a light output unit  320 , and a processor  330 , and receive the control command transmitted from the image providing apparatus  200  through the communicator  310 . 
     The communicator  310  may be an element for performing communications with various types of external apparatuses. For example, the communicator  310  may receive a control command from the display apparatus  100  according to a Bluetooth communication method. Besides the Bluetooth communication method, various types of communication methods such as an NFC method and the like may be used. 
     Also, the remote control device  300 ′ may transmit a control signal corresponding to the received first control command ({circumflex over ( 2 )}). For example, the processor  330  may transmit a control signal through the light output unit  320 . In this case, the light output unit  320  may include an Infrared-Light Emitting Diode (IR-LED) and generate an IR control signal under control of the processor  330 . 
     As described above, a control signal that the remote control device  300 ′ transmits may be a control signal that enables an image including contents for checking apparatus information of the image providing apparatus  200  to be provided for the display apparatus  100 . For example, the control signal may be a control signal that enables a menu screen image including a logo of the image providing apparatus  200  to be provided for the display apparatus  100 . 
     If the image providing apparatus  200  provides the display apparatus  100  with an image in response to the control signal transmitted from the remote control device  300 ′ ({circumflex over ( 3 )}), the display apparatus  100  may acquire apparatus information of the image providing apparatus  200  by sensing an image change caused by the provided image and analyzing the changed image ({circumflex over ( 4 )}). 
     If the image change is not sensed after transmitting the first control command, the display apparatus  100  may transmit a second control command ({circumflex over ( 1 )}) and repeat the operations ({circumflex over ( 2 )}, {circumflex over ( 3 )}) described above. Here, because the first control command is a control command that enables the control signal included in the control code set corresponding to the manufacturer having the highest market share to be transmitted, the second control command may be a control command that enables a control signal included in a control code set corresponding to a manufacturer having a second highest market share to be transmitted. 
     In other words, the display apparatus  100  may sequentially transmit the first control command, the second control command, and so forth, which are different from one another, to the remote control device  300 ′ until a change in an image is sensed. 
     For this, the user may aim the remote control device  300 ′ toward the image providing apparatus  200 . Also, as described above, the display apparatus  100  may display an image including a message such as, “Apparatus information is being acquired,” during a process of acquiring the apparatus information of the image providing apparatus  200 . In other words, the display apparatus  100  may display another image instead of displaying an image provided from the image providing apparatus  200  during a process of acquiring apparatus information. 
     If an image is not received from the image providing apparatus  200  (i.e., an image change is not sensed even after transmitting a control command for the preset number of times), the processor  130  of the display apparatus  100  may control the display  120  to display a UI inducing a direction change of the remote control device  300 ′. The UI may include a button for restarting an apparatus information acquiring process, and if the user selects this button after changing a direction or orientation of the remote control device  300 ′, the processor  130  may repeat the apparatus information acquiring process described above. 
     However, thereafter, even if the apparatus information of the image providing apparatus  200  is not acquired, the processor  130  may be provided with a control code set of a manufacturer, which is not used in a previous process, from an external server so as to retry to acquire the apparatus information. 
     If the apparatus information of the image providing apparatus  200  is not acquired, the processor  130  may display a UI that enables the user to manually input the apparatus information of the image providing apparatus  200 . 
     The display apparatus  100  may perform integrated remote control setup by using the acquired apparatus information as described above. 
       FIG. 6  is a view illustrating a method of setting an integrated remote control of the remote control device  300 ′ by acquiring an apparatus information of the image providing apparatus  200  by using the display apparatus  100 . 
     In  FIG. 6 , the display apparatus  100  may display an integrated remote control setup start screen  610  according to a user manipulation. The integrated remote control setup start screen  610  may include a message for turning on power of a device to be controlled by the remote control device  300 ′. 
     Also, if the user selects a “start” button  61  on the integrated remote control setup start screen  610 , the display apparatus  100  may display a screen  620  for selecting a device type. The user may select a type of the image providing apparatus  200  that is to be controlled by the remote control device  300 ′. A case where the user selects a set-top box  62  will be subsequently described. 
     Also, the display apparatus  100  may display a screen  630  including a message for positioning the remote control device  300 ′ toward a set-top box and a display apparatus. If the user selects a button  63  for going on to a next step on the screen  630 , the display apparatus  100  may perform an operation as described with reference to  FIG. 5 . In other words, the display apparatus  100  sequentially transmits control commands corresponding to control code sets of different manufacturers to the remote control device  300 ′. Therefore, if the remote control device  300 ′ transmits a control signal for displaying a particular image to a set-top box, and the set-top box provides the display apparatus  100  with an image in response to the control signal, the display apparatus  100  acquires apparatus information of the set-top box by analyzing the provided image. 
     If apparatus information acquiring succeeds by a process as described above, the display apparatus  100  displays a setting complete screen  640 . 
     If apparatus information acquiring fails although the display apparatus  100  transmits a control command to the remote control device  300 ′ a specific number of times or more, the display apparatus  100  may display a UI inducing a direction change so as to induce the user to position the remote control device  300 ′ toward the display apparatus  100  and the set-top box. 
     If apparatus information of the image providing apparatus  200  is acquired by the above-described method, the user may control the image providing apparatus  200  through the remote control device  300 ′. In detail, the display apparatus  100  may control the communicator  110  to transmit a control code set corresponding to the acquired apparatus information to the remote control device  300 ′. Also, the remote control device  300 ′ may control the image providing apparatus  200  by using the received control code set. 
     According to another method, the display apparatus  100  may store information about a corresponding relation between a button of the remote control device  300 ′ and a control code for controlling the image providing apparatus  200 . Therefore, the display apparatus  100  may convert a first control signal generated by the remote control device  300 ′ into a second control signal appropriate for controlling the image providing apparatus  200 . In detail, if the user selects a particular button on the remote control device  300 ′, the remote control device  300 ′ may transmit the first control signal corresponding to the selected button. The display apparatus  100  receives the first control signal and transmits a command, which enables the received first control signal and the second control signal corresponding to the apparatus information of the image providing apparatus  200  to be transmitted, to the remote control device  300 ′. Also, the remote control device  300 ′ may control the image providing apparatus  200  by transmitting the second control signal according to the command received from the display apparatus  100 . 
     The apparatus information of the image providing apparatus  200  may be used to set an integrated remote control of the remote control device  300 ′ as described above and may also be used to update a source name of the image providing apparatus  200 . This will be described later with reference to  FIG. 9 . 
     In the above-described exemplary embodiment, the method of acquiring the apparatus information of the image providing apparatus  200  by using the display apparatus  100  if the remote control device  300  is not an exclusive (i.e., dedicated) remote control of the image providing apparatus  200  has been described. Hereinafter, a method of acquiring apparatus information of the image providing apparatus  200  by using the display apparatus  100  if the remote control device  300  is an exclusive remote controller of the image providing apparatus  200  will be described with reference to  FIG. 7 . 
       FIG. 7  is a view illustrating a method of acquiring apparatus information of the image providing apparatus  200  by using the display apparatus  100 , according to another exemplary embodiment. Here, the display apparatus  100  may include a light receiver  140  along with the communicator  110 , the display  120 , and the processor  130 . The light receiver  140  may receive an IR control signal, which is output and transmitted from a light output unit  320 ′ of the remote control device  300 , through a light window. 
     If the user transmits a control signal for controlling the image providing apparatus  200  ({circumflex over ( 1 )}) by pressing and manipulating an arbitrary key of a remote control device  300 ″, the display apparatus  100  may receive the control signal through the light receiver  140  ({circumflex over ( 2 )}). This is referred to as IR sniffing. 
     Also, the image providing apparatus  200  may receive the control signal, and transmit an image to the display apparatus  100  according to the received control signal ({circumflex over ( 3 )}). 
     If the display apparatus  100  also receives the control signal, the image is provided from the image providing apparatus  200 , and an image change is sensed, the display apparatus  100  analyzes the received control signal and a current image ({circumflex over ( 4 )}). 
     In detail, the processor  130  may identify the received control signal based on a waveform of the control signal. Also, the processor  130  may check a control command corresponding to the control signal through an image analysis of comparing an image provided before receiving the control signal with an image provided after receiving the control signal. This will be described in more detail with reference to  FIG. 8 . 
       FIG. 8  is a view illustrating determining a control command corresponding to a received control signal based on an image change by using the display apparatus  100 , according to an exemplary embodiment. 
     As shown in  FIG. 8 , a first image  810  is an image provided before the display apparatus  100  receives a control signal for controlling the image providing apparatus  200  from the remote control device  300 ″, and a second image  820  is an image provided after receiving the control signal. 
     The processor  130  of the display apparatus  100  may determine a control command corresponding to the control signal is a control command for turning a channel up by comparing the first image  810  and the second image  820 . In detail, the processor  130  may determine that a channel is changed from 7 to 8 and determine the control command is for turning the channel up by extracting a channel number area  81  of the first image  810 , extracting a channel number area  82  of the second image  820 , and recognizing channel numbers of the extracted areas through OCR. 
     According to another method, the processor  130  may extract characteristic information of the first image  810  and the second image  820  and transmit the extracted characteristic information to an external server capable of recognizing an image based on characteristic information of the image. Also, the processor  130  may determine that a channel is turned up by receiving channel information corresponding to the first image  810  and channel information corresponding to the second image  820  from the external server. Here, the characteristic information transmitted to the external server may be a watermark or a fingerprint that is unique to an image. 
     As another example, the processor  130  may compare images provided before and after receiving a control signal and, if an object instructing that a volume is changed in the image after receiving the control signal or a volume control on-screen display (OSD) appears, determine that a control command corresponding to the control signal is for adjusting the volume. 
     According to various types of well-known image analysis technologies besides the above-described method, the processor  130  may determine which command the control command corresponding to the received control signal is. 
     Also, the processor  130  may acquire apparatus information of the image providing apparatus  200  based on the determined control command and the received control signal. In detail, the display apparatus  100  may acquire the apparatus information of the image providing apparatus  200  by storing a plurality of control code sets corresponding to image providing apparatuses of known manufacturers and checking a control code set matching with the received control signal and the determined control command among the plurality of preloaded control code sets. 
     Sometimes, even between different manufacturers a control signal corresponding to a particular control command may be the same. For example, if a control signal for turning a channel up in a control code set of manufacturer A and a control signal for turning a channel up in a control code set of manufacturer B are the same as each other, a plurality of pieces of apparatus information of the image providing apparatus  200  may be acquired through a control signal analysis and an image change analysis as described above, and thus one manufacturer may not be specified. 
     Therefore, according to an aspect of an exemplary embodiment, if an image provided from the image providing apparatus  200  includes contents for specifying the image providing apparatus  200 , apparatus information of the image providing apparatus  200  may be acquired through an image analysis. In detail, as described with reference to  FIG. 3 , apparatus information of the image providing apparatus  200  may be acquired by sensing a specific logo from an image provided from the image providing apparatus  200 . 
     Also, if an accuracy of a logo recognition is lowered although an image analysis technology for sensing a logo in an image is used, a plurality of pieces of apparatus information may be acquired, and thus one manufacturer may not be specified. 
     Therefore, in this case, if a method of analyzing a control signal and an image change and a method of analyzing contents indicating a business operator (i.e., manufacturer) in an image are used together, apparatus information of the image providing apparatus  200  may be accurately acquired. In other words, the processor  130  may finally acquire apparatus information of the image providing apparatus  200  by receiving a control signal transmitted from the remote control device  300 ″, determining a control command corresponding to the control signal through a changed image in response to the control signal, and sensing a specific object in an image provided from the image providing apparatus  200 . 
     As described above, the display apparatus  100  may autonomously acquire apparatus information of the image providing apparatus  200 . Alternatively, the display apparatus  100  may acquire apparatus information of the image providing apparatus  200  with assistance from a server. In detail, the processor  130  of the display apparatus  100  may control the communicator  110  to transmit the determined control command and control signal to the server so as to receive apparatus information of the image providing apparatus  200  from the server. Also, the display apparatus  100  may be provided with pieces of data necessary for an image analysis (e.g., information about a manufacturer logo) from the server. 
     A process of acquiring apparatus information of the image providing apparatus  200  as described above may start according to conditions where the image providing apparatus  200  is newly sensed, and a control signal for controlling the image providing apparatus  200  is received. Therefore, merely when the control signal is received, the process of acquiring the apparatus information may be performed, and thus a memory waste may be reduced. Here, the newly sensing the image providing apparatus  200  may indicate that a new image providing apparatus  200  is sensed in the display apparatus  100 . As a detailed example, the newly sensing the image providing apparatus  200  may indicate that the new image providing apparatus  200  is connected to an input port of the display apparatus  100 . 
       FIG. 9  is a view illustrating an example of using acquired apparatus information of the image providing apparatus  200 . 
       FIG. 9  illustrates a source list provided from the display apparatus  100 . In other words,  FIG. 9  illustrates a comparison between a source list  910  provided before acquiring apparatus information of the image providing apparatus  200  and a source list  920  provided after acquiring the apparatus information. A source list as mentioned above may be displayed on the display  120  according to a user command input through the remote control device  300 . 
     In detail, if apparatus information of the image providing apparatus  200  is acquired as in the above-described exemplary embodiment, the processor  130  may update a source name corresponding to the image providing apparatus  200  by using the acquired apparatus information of the image providing apparatus  200 . 
     As shown in  FIG. 9 , before acquiring the apparatus information, a source list including port names (HDMI 1, HDMI 2, AV 1, or the like) of sources are provided in the display apparatus  100  like a source list  910  that is not updated. After acquiring the apparatus information, a source names may be updated, and thus a list including manufacturer information (Samsung, Chromecast, or the like) may be provided like the updated source list  920 . 
     Also, the updated source list  920  may provide manufacturer information and information about device types. For example, the updated source list  920  may include manufacturer information and device types if an image providing apparatus is a set-top box. The updated source list  920  may include device types if the image providing apparatus is a BD player, a digital video recorder (DVR), or a home theater system (HTS). Also, the updated source list  920  may include manufacturer information and a device name if the image providing apparatus is an OTT device or a gaming console. Information about device types may be acquired by using different methods according to devices. For example, the user may acquire information about a device type by directly inputting the information about the device type into the display apparatus  100  or may acquire the information about the device type through a connection to the display apparatus  100 . 
     Apparatus information of the image providing apparatus  200  may be used to update a source name or may be transmitted to an external server to be collected as described above. Therefore, the external server may provide a service appropriate for a business operator of the image providing apparatus  200  through the display apparatus  100 . For example, the external server may provide the display apparatus  100  with an Electronic Program Guide (EPG) corresponding to the business operator of the image providing apparatus  200 . Also, the apparatus information of the image providing apparatus  200  may be used for a statistical purpose. 
       FIG. 10  is a flowchart of a method of controlling the display apparatus  100 , according to an exemplary embodiment. 
     As shown in  FIG. 10 , in operation S 1010 , the display apparatus  100  transmits a control command, which enables the remote control device  300  to transmit a specific control signal, to the remote control device  300 . A control command transmission operation described above may be performed if the image providing apparatus  200  is first connected to the display apparatus  100 . Alternatively, as described with reference to  FIG. 6 , the control command transmission operation may be performed if a user starts setting an integrated remote control in order to control the image providing apparatus  200  by using the remote control device  300 . 
     Also, after transmitting the control command as described above, the display apparatus  100  may acquire apparatus information of the image providing apparatus  200  by analyzing an image provided from the image providing apparatus  200 . 
     Data (e.g., a logo of each manufacturer) for acquiring the apparatus information of the image providing apparatus  200  may be stored (i.e., preloaded) in the display apparatus  100  or may be stored in an external server. If the data is stored in the external server, the display apparatus  100  may acquire the apparatus information of the image providing apparatus  200  from the external server by transmitting the image provided from the image providing apparatus  200  to the external server or may be provided with the data from the external server. If the display apparatus  100  fails to acquire the apparatus information, the display apparatus  100  may be provided with additional data from the external server to update the data of the display apparatus  200  by transmitting the failure result to the external server, and the external server may perform a supplementary work so as to perform an accurate image recognition based on the failure result. 
     The method of acquiring the apparatus information of the image providing apparatus  200  through the image analysis has been described in the above-described exemplary embodiment. According to an aspect of an exemplary embodiment, if the image providing apparatus  200  is an apparatus that is connectable through HDMI, the display apparatus  100  may easily acquire the apparatus information of the image providing apparatus  200  by checking Consumer Electronics Control (CEC) information and the like. If the display apparatus  100  is not capable of checking the CEC information and the like, the display apparatus  100  may acquire the apparatus information through the above-described image analysis. As described above, the display apparatus  100  may drive a multistage process in order to acquire the apparatus information of the image providing apparatus  200 . The present exemplary embodiment will be described in more detail with reference to  FIG. 11 . 
       FIG. 11  is a flowchart of a process of acquiring apparatus information of the image providing apparatus  200  by using the display apparatus  100 , according to an exemplary embodiment. 
     As shown in  FIG. 11 , if the image providing apparatus  200  is connected to the display apparatus  100  through HDMI in operation S 1110 , the display apparatus  100  checks CEC information in operation S 1120 . A CEC may enable devices connected to one another through HDMI to control one another, and if the devices support the CEC function, CEC information may include business operator (e.g., manufacturer) information of the image providing apparatus  200 . 
     However, if the CEC information many not include the manufacturer information or the display apparatus  100  may not be a device supporting the CEC function, in which case the display apparatus  100  may check manufacturer information in an Info-frame in operation S 1130 . 
     If there is no manufacturer information in the Info-frame, the display apparatus  100  may check the geographical location of the display apparatus  100  by checking a GEO IP and check a Multiple Service Operator (MSO) of the area in operation S 1140 . An image providing apparatus (e.g., a set-top box) of a particular manufacturer may be strongly tied to a particular geographical area. Therefore, the MSO of the image providing apparatus  200  may be checked merely by checking the GEO IP to check an area where the display apparatus  100  is located, thereby specifying a manufacturer of the image providing apparatus  200 . 
     However, if the GEO IP is not detected or a plurality of MSOs exist in the corresponding area, the display apparatus  100  may perform an Internet Protocol (IP) trace. In detail, if the image providing apparatus  200  is a set-top box, a business operator associated with the set-top box generally provides an Internet service together, and the set-top box and the Internet service of the same business operator are generally used together. Also, because an IP address includes information for specifying a business operator, the display apparatus  100  may acquire apparatus information of the image providing apparatus  200  by performing the IP trace. 
     However, if acquiring the apparatus information through the IP trace is impossible, an image analysis as described with reference to  FIGS. 5 and 6  may be performed in operation S 1160 . In detail, the display apparatus  100  may store an IR code set of a major manufacturer of an image providing apparatus and transmits a control command including an IR code set of a particular manufacturer through a Bluetooth communication. Also, the remote control device  300 ′ generates an IR signal according to a control command transmitted from the display apparatus  100 . Therefore, if the image providing apparatus  200  operates to provide the display apparatus  100  with an image, the display apparatus  100  may check a type or an IR code set of the image providing apparatus  200  by analyzing a provided UI image. 
     If there is no UI information for specifying a manufacturer of the image providing apparatus  200  or an IR code set is not specified, the display apparatus  100  may update a test code set in operation S 1170 . In other words, the display apparatus  100  may transmit a control command including an IR code set of another manufacturer to the remote control device  300 ′ through a Bluetooth communication. Also, the remote control device  300 ′ transmits an IR signal according to a received control command in operation S 1180 . This process may be repeated until the apparatus information of the image providing apparatus  200  is acquired. 
     Operations S 1140  and S 1150  among above-described operations may be optional operations and may not be performed. 
     Also, an IR code set of each manufacturer has been described as being stored in the display apparatus  100  in the above-described exemplary embodiment but may be stored in the remote control device  300 ′. Alternatively, the display apparatus  100  may be provided with an IR code set of each business operator from an external server. 
       FIG. 12  is a flowchart of a method of controlling the display apparatus  100 , according to another exemplary embodiment. 
     In  FIG. 12 , the display apparatus  100  receives a control signal for controlling an operation of the image providing apparatus  200  in operation S 1210 . The control signal is an IR signal transmitted from the remote control device  300 ″ capable of controlling the image providing apparatus  200 . The display apparatus  100  may receive the IR signal, which is generated for controlling the image providing apparatus  200 , by performing IR sniffing. 
     Also, the display apparatus  100  acquires apparatus information of the image providing apparatus  200  based on an image provided from the image providing apparatus  200  after receiving the control signal and the received control signal in operation S 1220 . 
     According to an exemplary embodiment, the display apparatus  100  may sense an image change type by comparing an image provided from the image providing apparatus  200  before the remote control device  300 ″ transmits the control signal and an image provided from the image providing apparatus  200  after the remote control device  300 ″ transmits the control signal and may acquire the apparatus information of the image providing apparatus  200  based on the sensed image change type and the control signal that the display apparatus  100  receives from the remote control device  300 ″. 
     However, if a plurality of pieces of apparatus information are acquired, the display apparatus  100  may select one of the plurality of pieces of apparatus information by recognizing contents for recognizing a manufacturer of the image providing apparatus  200  (e.g., a logo of the image providing apparatus  200  (refer to  FIG. 3 ), a matching relation between a channel number and a broadcast logo (refer to  FIG. 4 ), and the like) from an image provided from the image providing apparatus  200 . 
     According to an aspect of an exemplary embodiment, the display apparatus  100  may detect contents for recognizing a manufacturer of the image providing apparatus  200  from an image provided from the image providing apparatus  200 . If a plurality of pieces of apparatus information are acquired based on the detected contents, the display apparatus  100  may additionally select one of the plurality of pieces of apparatus information based on an image change type and a control signal as described above. 
     In other words, as a method by which the display apparatus  100  acquires apparatus information of the image providing apparatus  200  by using the remote control device  300 ″, a method performed based on an IR-sniffed control signal and image change sensing, a method of sensing contents for specifying a manufacturer from an image provided from the image providing apparatus  200 , or a method of performing the two methods may be used. 
     In the first and third methods, if the display apparatus  100  sniffs an IR signal, an apparatus information acquiring process may start, and thus a memory waste may be reduced. 
       FIG. 13  is a block diagram of a detailed configuration of the display apparatus  100 , according to an exemplary embodiment. The display apparatus  100  may further include elements, such as a optical receiver  140 , a storage unit  150 , a audio processor  160 , a video processor  170 , an audio output unit  180 , and the like, as well as a communicator  110 , a display  120 , and a processor  130 . 
     Repeated descriptions of the same operations of operations of the communicator  110 , the display  120 , and the processor  130  as the operations described above are omitted. 
     The communicator  110  may include an antenna input port  111 , first through n-th HDMI input ports  112 - 1  through  112 - n , a Universal Serial Bus (USB) port  113 , a component input jack  114 , a PC input port  115  (e.g., a video graphics adapter (VGA) port), a button  116 , a Bluetooth chip  117 , the optical receiver  140 , and the like. 
     The optical receiver  140  may receive a light signal such as an IR signal through a light window. The IR signal received through the optical receiver  140  may be a signal for controlling the display apparatus  100  or a signal received by IR-sniffing a signal for controlling another apparatus. 
     The processor  130  may specify the IR signal by analyzing a waveform of the IR signal received through IR sniffing. Also, the processor  130  may sense an image change corresponding to the IR signal by analyzing an image received through the communicator  110  and determine a control command corresponding to the IR signal by checking a type of the sensed image change. In addition, the processor  130  may acquire apparatus information corresponding to the determined control command and IR signal as apparatus information of the image providing apparatus  200 . 
     The communicator  110  may include a communication chip such as the Bluetooth chip  117 . Besides this, although not shown, the communicator  110  may include various types of communication chips such as a Wi-Fi chip, an NFC chip, a wireless communication chip, and the like. If the Bluetooth chip  117  is used, the communicator  110  may transmit and receive various types of connection information such as a subsystem identification (SSID), a session key, and the like, perform communication connections by using the various types of connection information, and transmit and receive various types of information. 
     The display apparatus  100  may include a tuner to select a broadcast channel received through the antenna input port  111 . 
     The processor  130  may transmit various types of control commands to the remote control device  300  through the communicator  110  according to a Bluetooth communication method. In particular, the processor  130  may transmit a control command including an IR code set to the remote control device  300  according to a Bluetooth method. 
     The button  116  may be a power button, a mute button, a volume change button, or a channel change button. 
     The audio processor  160  is an element that performs processing with respect to audio data. The audio processor  160  may perform various types of processing, such as decoding, amplifying, noise filtering, and the like, with respect to the audio data. 
     The video processor  170  is an element that performs processing with respect to image data received by the communicator  110 . The video processor  170  may perform various types of image processing, such as decoding, scaling, noise filtering, frame rate converting, resolution converting, and the like, with respect to the image data. 
     The audio output unit  180  may include a speaker  181 , a headphones output terminal  182 , or a Sony/Philips Digital Interface (S/PDIF)  183  for outputting the audio data processed by the audio processor  160 . 
     The storage unit  150  may store various types of data, programs, or applications for driving and controlling the display apparatus  100  under control of the processor  130 . 
     The storage unit  150  may include a nonvolatile memory, a volatile memory, a hard disc drive (HDD), or a solid-state drive (SSD). Also, the storage unit  150  includes a memory card (e.g., a micro Secure Digital (SD) card, a USB memory, or the like) installed in the display apparatus  100 . 
     The storage unit  150  may store various types of modules such as an image processing module, an image recognizing module, an IR sniffing module, and the like. Also, the storage unit  150  may store a broadcast receiving module, a channel controlling module, a volume controlling module, a communication controlling module, a voice recognizing module, a motion recognizing module, a light receiving module, a display controlling module, an audio controlling module, an external input controlling module, and a power controlling module. These various modules may be implemented with hardware, software, or a combination thereof. The storage unit  150  may also store IR code sets, business operator logos, broadcast logos, and the like of various business operators of an image providing apparatus. 
     The processor  130  controls an overall operation of the display apparatus  100  by using various types of programs stored in the storage unit  150 . 
     The processor  130  includes a random access memory (RAM)  131 , a read-only memory (ROM)  132 , a graphics processor  133 , a central processing unit (CPU)  134 , first through n-th interfaces  135 - 1  through  135 - n , and a bus  136 . Here, the RAM  131 , the ROM  132 , the graphics processor  133 , the CPU  134 , the first through n-th interfaces  135 - 1  through  135 - n , and the like may be connected to one another through the bus  136 . 
     The ROM  132  stores a command set and the like for system booting. If power is supplied by an input of a turn-on command, the CPU  134  boots a system by copying an OS stored in the storage unit  150  into the RAM  131  and executing the OS according to a command stored in the ROM  132 . If the system is completely booted, the CPU  134  performs various operations by coping various types of application programs stored in the storage unit  150  into the RAM  131  and executing the application programs copied into the RAM  131 . 
     The graphics processor  133  generates a screen including various types of objects such as an icon, an image, a text, and the like by using an operator and a renderer. The operator calculates attribute values such as coordinate values at which objects will be respectively displayed, shapes, sizes, and colors of the objects, and the like according to a layout of the screen. The renderer generates a screen having various types of layouts including objects based on the attribute values calculated by the operator. The screen generated by the renderer is displayed in a display area of the display  120 . 
     The first through n-th interfaces  135 - 1  through  135 - n  are connected to various types of elements as described above. One of interfaces may be a network interface that is connected to an external apparatus through a network. 
     For example, the CPU  134  may copy an image analysis module stored in the storage unit  150  into the RAM  131  and execute the image analysis module. Therefore, the CPU  134  may acquire apparatus information of the image providing apparatus  200  by analyzing an image received from the image providing apparatus  200 . 
     Various exemplary embodiments described above may be embodied in a recording medium that may be read by a computer or a similar apparatus to the computer by using software, hardware, or a combination thereof. According to the hardware embodiment, exemplary embodiments that are described in the present disclosure may be embodied by using at least one selected from Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), processors, controllers, micro-controllers, microprocessors, electrical units for performing other functions. In some cases, exemplary embodiments that are described in the present specification may be embodied as the processor  130 . According to the software embodiment, embodiments such as processes and functions described in the present specification may be embodied as additional software modules. The software modules may respectively perform one or more functions and operations described in the present specification. 
     Methods of controlling a display apparatus according to various exemplary embodiments may be stored on a non-transitory readable medium. The non-transitory readable medium may be installed and used in various types of apparatuses. 
     The non-transitory computer readable medium is a medium which does not store data temporarily such as a register, cash, and memory but stores data semi-permanently and is readable by devices. More specifically, the aforementioned applications or programs including the method of controlling the display apparatus may be stored in the non-transitory computer readable media such as compact discs (CDs), digital video discs (DVDs), hard disks, Blu-ray discs, Universal Serial Bus (USB) memory modules, memory cards, and read-only memory (ROM). 
     The foregoing exemplary embodiments and advantages are merely exemplary and are not to be construed as limiting the present invention. The present teaching can be readily applied to other types of apparatuses. Also, the description of the exemplary embodiments is intended to be illustrative, and not to limit the scope of the claims, and many alternatives, modifications, and variations will be apparent to those skilled in the art.