Patent Publication Number: US-2022221161-A1

Title: Range hood and method for controlling the range hood

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application is a continuation application of prior application Ser. No. 15/852,926, filed on Dec. 22, 2017, which claims priority under 35 U.S.C. § 119(a) of a Korean patent application filed on Jun. 26, 2017 in the Korean Intellectual Property Office and assigned Serial number 10-2017-0080642, the entire disclosure of which is hereby incorporated by reference. 
    
    
     TECHNICAL FIELD 
     The present disclosure relates to a range hood and a method for controlling the range hood. More particularly, the present disclosure relates to a range hood having a camera photographing through a bottom surface facing a cook top positioned under the range hood, and a method for controlling the range hood. 
     BACKGROUND 
     More and more families are installing cook tops and range hoods in their kitchens. The cook top may mean an electric range and/or a gas range for heating the cooking container (or the object to be cooked) through one or a plurality of burners. The cook top may be referred to as a cooking apparatus. The cook top described above can be implemented in standalone or in an oven range including an oven under the cook top. 
     The range hood located above the cook top (e.g., in the opposite direction of gravity) can discharge the smoke and/or odor generated from the cooking container (or the object to be cooked) to the outside through the fan. The range hood is one of the ventilators that can be installed in the kitchen and can be installed with the cook top. 
     Until the cooking is completed, the user must continuously check whether the cooking container (or the object to be cooked) placed on the cook top is overheated or overcooked. 
     The above information is presented as background information only to assist with an understanding of the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the present disclosure. 
     SUMMARY 
     Aspects of the present disclosure are to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the present disclosure is to provide a range hood which includes a main body, a camera disposed in the main body and configured to capture an image of an upper plate of a cook top that is positioned below the main body, and a processor configured to control the camera to capture an image of a cooking process that is being performed on the upper plate. 
     In accordance with an aspect of the present disclosure, the range hood may include a transceiver disposed in the main body, wherein the processor is further configured to control the transceiver to transmit the image to an external destination. 
     In accordance with an aspect of the present disclosure, the main body may include an opening in a bottom surface for capturing the image. 
     In accordance with an aspect of the present disclosure, a method for controlling a range hood is provided. The method includes supplying power to a range hood which includes a camera configured to capture images of a cook top on which a cooking container is to be placed, capturing an image of a cooking process that is being performed on the cook top, connecting with an external device through a transceiver, and transmitting the image to the external device, wherein, while capturing the image, the range hood is configured to provide illumination through an auxiliary light source. 
     In accordance with an aspect of the present disclosure, the method further comprises, in response to the transceiver being connected to a second transceiver disposed in the cook top, the second transceiver is configured to transmit the image to the external device. 
     In accordance with another aspect of the present disclosure, a cook top is provided. The cook top includes a main body, a transceiver disposed in the main body and configured to connect with a range hood that is positioned above the main body, a heating unit configured to heat a cooking container placed on an upper plate of the main body, and a processor configured to control the transceiver to receive an image that is captured by the range hood while heating the cooking container. 
     In accordance with an aspect of the present disclosure, the controller may control the communicator at least one from among the video and the image to an external device. 
     In accordance with another aspect of the present disclosure, a portable device is provided. The portable device includes a display, a communicator which is connected with at least one of a cook top and a range hood which is positioned above the cook top and has a camera photographing the cook top, and a processor configured to control the display and the communicator, wherein the processor controls to receive at least one of a video and image corresponding to a cooking process performed on the cook top photographed through the camera via the communicator and to display the received video or image on the display. 
     In accordance with another aspect of the present disclosure, a display device is provided. The display device includes a display, a communicator which is connected with at least one of a cook top and a range hood which is positioned above the cook top and has a camera photographing the cook top, and a processor configured to control the display and the communicator, wherein the processor controls to receive at least one of a video and image corresponding to a cooking process performed on the cook top photographed through the camera via the communicator and to display the received video or image on the display. 
     In accordance with another aspect of the present disclosure, a home appliance is provided. The home appliance includes a display, a communicator which is connected with at least one of a cook top and a range hood which is positioned above the cook top and has a camera photographing the cook top, and a processor configured to control the display and the communicator, wherein the processor controls to receive at least one of a video and image corresponding to a cooking process performed on the cook top photographed through the camera via the communicator and to display the received video or image on the display. 
     In accordance with another aspect of the present disclosure, a server is provided. The server includes a communicator which is connected with at least one of a cook top and a range hood which is positioned above the cook top and has a camera photographing the cook top, a storage, and a processor configured to control the communicator and the storage, wherein the processor controls to receive at least one of a video and image corresponding to a cooking process performed on the cook top photographed through the camera via the communicator and to store the received video or image on the storage. 
     A range hood at which a camera capable of photographing through a bottom surface facing an upper plate of a cook top is positioned may be provided. 
     A range hood which is capable of photographing a cooking process performed on an upper plate of a cook top by using a camera capable of photographing through a bottom surface facing the upper plate of the cook top and transmitting the photographed cooking process to an external destination may be provided. 
     A range hood which is capable of transmitting a state of a cook top and a state of a cooking container (or object to be cooked) placed on an upper plate of the cook top to an external destination by using a camera capable of photographing through a bottom surface facing the upper plate of the cook top may be provided. 
     A range hood which is capable of photographing a cooking process performed on an upper plate of a cook top by using a camera capable of photographing through a bottom surface facing the upper plate of the cook top, and transmitting the photographed cooking process to an external destination so that the user may identify it, and a method for controlling the range hood may be provided. 
     A range hood which is capable of transmitting a state of a cook top and a state of a cooking container (or object to be cooked) placed on an upper plate of the cook top to an external destination by using a camera capable of photographing through a bottom surface facing the upper plate of the cook top so that the user may identify it, and a method for controlling the range hood may be provided. 
     A range hood which is capable of photographing a cooking process performed on an upper plate of a cook top by using a camera capable of photographing through a bottom surface facing the upper plate of the cook top, and transmitting the photographed cooking process to an external destination so that the user may identify it through a peripheral electronic device (e.g., portable terminal or display device), and a method for controlling the range hood may be provided. 
     A range hood which is capable of transmitting a state of a cook top and a state of a cooking container (or object to be cooked) placed on an upper plate of the cook top by using a camera capable of photographing through a bottom surface facing the upper plate of the cook top so that the user may identify it through a peripheral electronic device (e.g., portable terminal or display device), and a method for controlling the range hood may be provided. 
     A range hood which is capable of photographing a cooking process performed on an upper plate of a cook top by using a camera capable of photographing through a bottom surface facing the upper plate of the cook top, and transmitting the photographed cooking process to an external destination so that a third party may share it through a peripheral electronic device (e.g., portable terminal or display device), and a method for controlling the range hood may be provided. 
     A range hood which is capable of transmitting a state of a cook top and a state of a cooking container (or object to be cooked) placed on an upper plate of the cook top by using a camera capable of photographing through a bottom surface facing the upper plate of the cook top so that a third party may share it through a peripheral electronic device (e.g., portable terminal or display device), and a method for controlling the range hood may be provided. 
     According to the various example embodiments described above, a range hood which is capable of photographing at least one of a state of a cooking container (or object to be cooked) placed on an upper plate of a cook top and a cooking process performed on the upper plate of the cook top through a camera positioned on a bottom surface facing the upper plate of the cook top and transmitting it to an external destination, and a method for controlling the range hood may be provided. 
     Other aspects, advantages, and salient features of the disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses various embodiments of the present disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other aspects, features, and advantages of certain embodiments of the present disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, in which: 
         FIG. 1A  is a perspective view illustrating a range hood having a camera and a cook top according to an embodiment of the present disclosure; 
         FIG. 1B  is a perspective view illustrating a range hood having a camera and a cook top according to an embodiment of the present disclosure; 
         FIG. 1C  is a perspective view illustrating a range hood having a camera positioned on a bottom surface and a cook top according to an embodiment of the present disclosure; 
         FIG. 2A  is a diagram illustrating a range hood having a camera and a cook top according to an embodiment of the present disclosure; 
         FIG. 2B  is a block diagram of the range hood in  FIG. 2A  according to an embodiment of the present disclosure; 
         FIG. 2C  is a diagram illustrating a range hood having a camera and a cook top, according to another embodiment of the present disclosure; 
         FIG. 2D  is a block diagram of the range hood in  FIG. 2C  according to another embodiment of the present disclosure; 
         FIG. 3  is a sectional view illustrating a range hood having a camera according to various embodiments of the present disclosure; 
         FIG. 4  is a flowchart illustrating a method for controlling a range hood having a camera according to an embodiment of the present disclosure; 
         FIG. 5  is a flowchart illustrating a method for controlling a range hood having a camera and a cook top according to an another embodiment of the present disclosure; 
         FIGS. 6A, 6B, 6C, 6D, 6E, and 6F  are diagrams illustrating an example of a method of controlling a range hood having a camera, according to an embodiment of the present disclosure; 
         FIGS. 7A, 7B, 7C, 7D, and 7E  are diagrams illustrating an example of a method for controlling a range hood having a camera and an external device, according to another embodiment of the present disclosure; 
         FIGS. 8A and 8B  are diagrams illustrating a method for controlling a range hood having a camera according to an embodiment of the present disclosure; and 
         FIGS. 9A and 9B  are sectional views illustrating a range hood having a camera according to another embodiment of the present disclosure. 
     
    
    
     Throughout the drawings, like reference numerals will be understood to refer to like parts, components, and structures. 
     DETAILED DESCRIPTION 
     The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness. 
     The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only and not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents. 
     It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to “a component surface” includes reference to one or more of such surfaces. 
     Terminology including an ordinal number such as “first,” “second,” and so on may be used to describe a variety of constituent elements, but the elements are not limited by the terminology. In embodiments of 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. For example, a first element may be named a second element without departing from the scope of right of various example embodiments, and similarly, a second element may be named a first element. As used herein, the term “and/or,” includes any and all combinations of one or more of the associated listed items. 
     According to an example embodiment, the application refers to an operation system (OS) for computers or software executed on a mobile OS to be used by a user. For example, the application may include a web browser, a camera application, a mobile payment application (or, electronic payment application or payment application), a photo album application, a word processor, a spread sheet, a contacts application, a calendar application, a memo application, an alarm application, a social network system (SNS), a call application, a game store, a game application, a chatting application, a map application, a music player or a video player. 
     According to an example embodiment, an application may refer to a range hood or software which is executed in an electronic device (e.g., portable device, display device, home appliance, wearable device or server) connected to the range hood via wire or wirelessly. According to an example embodiment, an application may refer to software which is executed in a range hood in response to a user input that is received. 
     A content may be executed or displayed through an application which is executed correspondingly. For example, a content may include a video file or audio file which is executed in a video player, which is one of the application, a video file or audio file which is photographed by a camera application, a game file which is executed in a game application, a music file which is reproduced in a music player, a photo file which is displayed in a photo album application, a web page file which is displayed in a web browser, or payment information (e.g., mobile card number, payment amount, product name, service name or store name) which is displayed on an electronic payment application. In addition, a content may include a call screen (e.g., including caller ID, caller name, call start time, or caller video (or caller image) by a video call) which is displayed in a call application. 
     A content may include a screen of an application (or widget) being executed and a user interface which configures the application screen. In addition, a content may include one or a plurality of contents as well. 
     The widget refers to a mini application which is one of the graphical user interfaces (GUIs) for facilitating an interaction between a user and an application or between the user and an OS. For example, the widget may include a weather widget, a calculator widget, a clock widget, etc. 
     In an example embodiment, a “user input” may be a term which includes, for example, selection of a button (or key) by a user, depress (or click) of a button (or key) by a user, touch of a soft button (or soft key) by a user, a touch (including non-contact such as hovering) received (or detected) in a touch screen by a user, a touch gesture (including non-contact such as hovering, a user voice, a user presence (e.g., a user appears within a recognition range of a camera) received (or detected) in a touch screen by a user, or a user motion. In addition, a ‘selection of a button (or key)’ may be used to refer to a press (or click) of a button (or key) or a touch of a soft button (or soft key). 
     Terms used in the present specification are used only in order to describe specific embodiments rather than limiting the present disclosure. It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise. Throughout this specification, it will be understood that the term “comprise” and variations thereof, such as “comprising” and “comprises”, specify the presence of features, numbers, operations, components, parts, or combinations thereof, described in the specification, but do not preclude the presence or addition of one or more other features, numbers, operations, components, parts, or combinations thereof. Like reference numerals in the drawings denote members performing substantially the same function. 
       FIG. 1A  is a perspective view illustrating a range hood having a camera and a cook top according to an embodiment of the present disclosure,  FIG. 1B  is a perspective view illustrating a range hood having a camera and a cook top according to an embodiment of the present disclosure, and  FIG. 1C  is a perspective view illustrating a range hood having a camera positioned on a bottom surface and a cook top according to an embodiment of the present disclosure. 
     Referring to  FIGS. 1A, 1B, and 1C , a range hood  100  which is positioned on top of an upper plate  200   a  (for example, +z-axis direction) may include a main body  10 , a duct cover  11 , a control box  12  inside the duct cover  11 , a light emitting diode (LED)  176 , which can be implemented as any suitable auxiliary light source, and/or a first driver  180 ′ (see  FIG. 2 ). Buttons  170   a - 170   k  (or functional buttons) and/or a touch screen  170  (or a display) displaying a content may be positioned on a front surface  10   a  (e.g., +y-axis direction) of the main body  10 . The number and function of the buttons  170   a - 170   k  listed above may be added, changed, or deleted according to a structure (or function) of the range hood  100 . 
     A touch screen  170  which is capable of receiving a user input (e.g., touch or selection of a button  170   a - 170   k ) and displaying a screen of an application (or widget) may be positioned. The buttons  170   a - 170   k  may be displayed in the touch screen  170  or may be positioned separately from the touch screen  170 . The buttons  170   a - 170   k  may be buttons which are displayed in a touch screen, touch buttons or physical buttons. 
     A camera  150  may be positioned at a bottom surface  10   b  (e.g., −z-axis direction) of the main body  10 . One camera or two or more cameras may be provided. The camera  150  may be positioned in a center area (e.g., area including a half position of the width of the bottom surface  10   b ) of the bottom surface  10   b  of the main body  10 . The camera  150  may be positioned in a center area (e.g., area including a half position of the width of the bottom surface  10   b ) excluding a baffle filter  13  area in the bottom surface  10   b  of the main body  10 . 
     The LED  176  may be respectively positioned on at least one of the left side and right side of the camera  150 . In an example embodiment, the LED  176  may be referred to as an auxiliary light source. 
     The speaker  175  may be positioned in one of an area adjacent to the camera  150  (e.g., within a radius of 300 mm) and an area adjacent to the touch screen  170  (e.g., within a radius of 300 mm). In addition, one speaker or two or more speakers  175  may be provided. 
     A cook top  200  which is positioned under (e.g., −z-axis direction) the range hood  100  may include one of an electric range, a gas range and an induction range. In addition, the cook top  200  may include a combination of an electric range, a gas range, and an induction range. 
     An oven range  1000  may include an integral oven  300  and the cook top  200 . However, the oven  300  and the cook top  200  may be configured as separate appliances. The oven  300  may generate heat by using gas or electricity and cook the food material inside the cavity by convection of air. A door  311  which is positioned on the front surface of the main body  310  of the oven  300  including the cook top  200  may be rotated based on a hinge axis (not illustrated). An operation panel  330  for controlling (or inputting) an operation and/or function of the oven  300  and a display unit  340  may be positioned on the upper surface of the door  311 . 
     The range hood  100  may absorb a smoke, cooking paper and/or odor which are generated in the cooking process through a cooking container  1  placed on the upper plate  200   a  of the cook top  200  by using a first driver  180 ′. 
       FIG. 2A  is a diagram illustrating a range hood having a camera and a cook top according to an embodiment of the present disclosure,  FIG. 2B  is a block diagram of the range hood in  FIG. 2A  according to an embodiment of the present disclosure,  FIG. 2C  is a diagram illustrating a range hood having a camera and a cook top according to another embodiment of the present disclosure, and  FIG. 2D  is a block diagram of the range hood in  FIG. 2C  according to another embodiment of the present disclosure. 
     Referring to  FIGS. 2A and 2B , the range hood  100  may be directly connected with an external device  400  by using a communicator  120 . The range hood  100  may be connected with the external device  400  by using an access point (AP) (not illustrated) and/or peer-to-peer (P2P) method. The external device  400  may include a portable device  410  including a smart phone, a display device  420  including a television (TV), a home appliance  430  such as an air conditioner and a washing machine, or a server  440 . 
     The range hood  100  may transmit operation information corresponding to an operation (e.g., fan rotation speed) of the range hood or state information corresponding to a state (e.g., normal and abnormal) of the range hood to the range hood via the communicator  120 , or may receive control information (e.g., control command corresponding to a fan rotation speed of the range hood  100 ) from an external source. 
     The range hood  100  may include a controller  110 , a communicator  120 , a camera  150 , a sensor  160 , a touch screen  170 , a speaker  175 , an LED  176 , a first driver  180 ′ including a first motor  180  and a first fan  181 , a storage  190  and a power manager  195 . The range hood  100  may include a sensor  160  (e.g., temperature sensor  161  and/or smoke sensor  162 ). In addition, the range hood  100  may further include a microphone (not illustrated) which receives a user voice. 
     The controller  110  may include the processor  111 . The controller  110  may include a non-volatile memory which includes read only memory (ROM)  112  that stores a control program for controlling the range hood  100  and a signal or data received from a source outside the range hood  100 , or may include a volatile memory which includes random access memory (RANI)  113  that is used as a storage area with respect to various operations performed in the range hood  100 . 
     The RAM  113  may be used as a storage area with respect to control information received from an external source, operation information of the range hood  100  or state information of the range hood  100 . The processor  111  may include at least one of the ROM  112  and the RAM  113 . 
     The controller  110  serves to control a signal flow between the overall operation of the range hood  100  and the internal components  110  to  195  of the range hood  100  and process data. The controller  110  may control the power supply to the internal elements  110  to  195  by using the power manager  195 . The processor  111 , the ROM  112 , and the RAM  113  may be connected with one another by a bus. 
     The controller  110  may control the communicator  120 , the camera  150 , the sensor  160 , the touch screen  170 , the speaker  175 , the LED  176 , the first driver  180 ′, the second driver  182 ′, the storage  190 , and the power manager  195 . 
     The controller  110  may control a camera which is positioned inside the main body and photographs an upper plate of a cook top positioned under the main body through a bottom surface of the main body, so that a cooking process performed on the upper plate of the cook top is photographed. 
     The range hood may include a communicator which is positioned inside the main body and connects to an external device, and the controller  110  may control to transmit at least one of a photographed video and image to outside in response to the cooking process. 
     The main body may further include a duct and a first driver which absorbs at least one of smoke, cooking steam and cooking odor generated in the cooking process through the duct, and the controller may control to operate the first driver in response to photographing of the camera. 
     The main body may further include an auxiliary light source, and the controller  110  may control to operate the auxiliary light source in response to photographing of the camera. 
     The main body may further include a second driver, and the controller  110  may operate the second driver to control the camera to be cooled down. 
     The main body may further include a display on the front side, and the display may include a plurality of buttons. In addition, the controller may control the first driver to be operated in response to selection of a power button which is one of the plurality of buttons. 
     The main body may further include a display on the front side, and the display may include a plurality of buttons. In addition, the controller may control to wirelessly connect with the external device by using the communicator in response to selection of a wireless connection button which is one of the plurality of buttons. 
     The controller  110  may control the camera to photograph at least one of a state of the cook top and a state of a cooking container to be placed on the cook top. 
     The controller  110  may control to recognize at least one of a position and size of the cook top by using at least one of the photographed video and image. 
     The controller  110  may control to recognize at least one of a flame position and flame area of the cook top by using at least one of the photographed video and image. 
     The controller  110  may control to recognize a cooking container which is placed on the cook top by using at least one of the photographed video and image. 
     The controller  110  may control to recognize smoke generated from a cooking container placed on the cook top by using at least one of the photographed video and image. 
     The controller  110  may control to recognize a foreign substance that is attached to a glass positioned on the front side of the camera by using at least one of the photographed video and image. 
     The controller  110  may control to recognize the boiling water of the cooking container by using at least one of the photographed video and image. 
     According to an example embodiment, the term “controller of the range hood” may be a term which includes the processor  111 , the ROM  112 , and the RAM  113 . In addition, “controller of the range hood” may refer to the processor  111 . 
     The communicator  120  may connect with an external device  400  and  410 - 440  via a mobile communication network, a wireless local area network (LAN) communication network, or a near field communication network by using one antenna or two or more antennas under the control of the controller  110 . The communicator  120  may be wirelessly connected with an external device  400  under the control of the controller  110 . The external device  400  may include a portable device  410  including a smart phone, a display device  420  including a TV, home appliance  430  including an air conditioner and a washing machine, or a server  440 . 
     The wireless LAN communication may be wirelessly connected with an access point (AP) at a location where the AP is installed under the control of the controller  110 . For example, the wireless LAN communication may include a Wi-Fi communication. The near field communication may include a Bluetooth communication, a Bluetooth low energy communication, an infrared data association (IrDA) communication, a ultra-wideband (UWB) communication, a Wi-Fi direct, a magnetic security transmission (MST) communication and/or an near field communication (NFC) communication. 
     According to the various example embodiments, the term “communicator” may be connect with an external device via a mobile communication, a wireless LAN communication and/or near field communication. 
     The camera  150  may photograph a still image or record a video under the control of the controller  110 . In an example embodiment, the term “image” may include a single image or multiple images (i.e., a video). In an example embodiment, a recorded image may include a series of images which are photographed at predetermined intervals (e.g., 100 ms, 1 sec, 3 sec, etc.) that may be modified or configured by a user. 
     The camera  150  may photograph a still image and a video in the direction from a bottom surface  10   b  of the range hood toward the upper plate  200   a  of the cook top  200  under the control of the controller  110 . 
     The camera  150  may include a glass (or heat-resistant glass  151   a , see  FIG. 3 ) which is positioned on the front side of the lens and insulates from external heat and/or maintains camera photographing quality, a glass holder  151   b  (see  FIG. 3 ) which fixes the glass  151   a  and forms an air insulation pocket layer, and/or a camera holder  151   c  (see  FIG. 3 ) which fixes the camera  150 . 
     The camera  150  may be positioned inside the main body  10 . An opening may be formed in the bottom surface  10   b . The camera  150  may photograph the upper plate  200   a  of the cook top  200  via the opening of the main body  10 . The glass  151   a  may cover the opening. The camera  150  may photograph the upper plate  200   a  of the cook top  200  via the glass  151   a  which covers the opening of the main body  10 . 
     A portion of the camera  150  may be exposed outside from the main body  10 . In addition, the camera  150  may be protruded outside from the bottom surface  10   b  of the main body  10 . The glass  151   a  may be fixed to at least one of the main body  10  and the glass holder  151   b  to correspond to the camera  150  projected outside the bottom surface  10   b  of the main body  10 . The second driver  182 ′ may be positioned on the rear side of the camera  150 . A cooling tube  10   c  which is connected with the duct  14  may be positioned on the rear side of the camera  150 . The opening of the bottom surface  10   b  to which the glass  151   a  is not added may be connected with the duct  14  via the cooling tube  10   c.    
     The camera  150  may photograph a cooking process and/or a cooking situation using at least one of a still image and a video. The camera  150  may include a first camera  150  which is positioned on the bottom surface  10   b  of the range hood  100  and a second camera (not illustrated) which photographs an appearance of the user from the front surface  10   a  of the range hood  100 . 
     An optical axis of the camera  150  may be inclined at a setting angle (e.g., 65 degrees or less, see  FIG. 3 ) in the counterclockwise direction with respect to the bottom surface  10   b  of the range hood  100 . The above-mentioned setting angle may be 75 degrees or less or may be 10 degrees or more. In addition, the above-mentioned setting angle may be 60 degrees or less or may be 3 degrees or more. 
     The camera  150  may include an auxiliary light source (e.g., flash (not illustrated)) which provides an amount of light required for photographing. In addition, the camera  150  may be provided with an amount of light required for photographing via the LED  176 . 
     The controller  110  may provide power supply to the LED  176  in response to photographing of the camera  150 . In addition, the controller  110  may provide power supply (LED auto on) to the LED  176  in response to a photographing start time of the camera  150 . 
     The controller  110  may control the storage  190  to store at least one of a video and image photographed through the camera  150 . The controller  110  may control the storage  190  to store a video and image photographed through the camera  150  together or individually. 
     The controller  110  may transmit at least one of a video and an image photographed to a portable device  410  by using the communicator  120 . The controller  110  may transmit at least one of a pre-stored video and image to an external device  400  by using the communicator  120 . 
     The sensor  160  may detect a peripheral state (e.g., illuminance) of the range hood  100  and/or an internal state (e.g., temperature of storage chamber) of the range hood  100  through one or a plurality of sensors. 
     The sensor  160  may include a temperature sensor  161  which detects a temperature of a cooking container  1  (or an object to be cooked) placed on the upper plate  200   a  of the cook top  200  and/or a smoke sensor  162  which senses smoke and/or vapors generated from a cooking container  1  (or an object to be cooked) placed on the upper plate  200   a  of the cook top  200 . In addition, the sensor  160  may include an illuminance sensor (not illustrated) corresponding to a brightness change of the touch screen  170  and/or lighting (or off) of the LED  176 . It would be easily understood by those skilled in the art that a sensor type included in the sensor  160  may be added, modified or deleted according to a performance of the range hood  100 . 
     A touch screen may provide (or display) a GUI corresponding to various services (e.g., data transmission, displaying of an application, broadcast reception, viewing a photographed video (or image), viewing a video content or electronic payment including mobile payment). In an example embodiment, a display may be a concept which includes a touch screen. 
     The touch screen  170  may include a touch panel  172  which receives a user input (e.g., touch) and a display panel  171  for displaying a screen. In the touch screen  170 , the display panel  171  and the touch panel  172  may be implemented as integral-type (e.g., in-cell type touch screen or on-cell type touch screen). 
     The touch screen  170  may include an edge touch screen (not illustrated) having a curvature. The edge touch screen may include an edge touch panel (not illustrated) which receives a user input and an edge display panel (not illustrated) for displaying a screen. The edge touch panel and the edge display panel may be implemented as integral-type as described above. 
     The touch screen  170  may transmit an analog signal corresponding to a single touch (or multi-touch) that is input through a home screen (not illustrated) or GUI to a touch screen controller (not illustrated). The touch screen  170  may receive a single touch or multi-touch through a body (e.g., fingers including a thumb) of the user or an input pen (e.g., stylus, not illustrated). 
     According to an example embodiment, a touch screen  170  (or a display) may output visual feedback corresponding to photographing of at least one of a cooking process, a state of a cook top and a state of a cooking container through the camera  150 . In an example embodiment, the display may be a concept which includes the touch screen  170 . 
     A touch screen controller (not illustrated) converts an analog signal corresponding to a touch (single touch or multi-touch) received from the touch screen  170  into a digital signal, and transmits the digital signal to the controller  110 . The controller  110  may calculate a position (e.g., x coordinate and y coordinate) of a touch received by the touch screen  170  by using the digital signal received from the touch screen controller (not illustrated). 
     The controller  110  may control the touch screen  170  by using the digital signal received from the touch screen controller (not illustrated). For example, in response to an input touch, the controller  110  may display a shortcut icon (or referred to as icon) selected from among shortcut icons corresponding to applications displayed on the touch screen  170  distinctively from other shortcut icons that are not selected, or may display an application (e.g., video application) corresponding to the selected shortcut icon. 
     The speaker  175  may output sound corresponding to various signals (e.g., broadcast signal, audio source, video file or photo photographing) decoded by an audio codec under the control of the controller  110 . One speaker  175  or two or more speakers  175  may be provided. 
     According to an example embodiment, the speaker  175  (or touch screen) may output auditory feedback corresponding to photographing of at least one of a cooking process, a state of a cook top and a state of a cooking container through the camera  150 . 
     The first driver  180 ′ may include a first motor  180  which is operated under the control of the controller  110 , and a first fan  181 . The first driver  180 ′ may be positioned within a duct  14  of the range hood  100 . The smoke, cooking steam and/or cooking odor which are generated in the process of cooking may be absorbed by the first driver  180 ′ and discharged outside. 
     A rotating speed of the first motor  180  (or first fan  181 ) may be modified under the control of the controller  110 . 
     The second driver  182 ′ may include a second motor  182  and a second fan  183 . The second driver  182 ′ may be positioned on the rear side (e.g., z-axis direction) of the camera  150 . A cooling tube  10   c  which is connected with the duct  14  may be positioned on the rear side of the camera  150 . The second driver  182 ′ may be positioned between the camera  150  and the cooling tube  10   c . A sectional shape, length and/or the degree of bending of the cooling tube  10   c  may be modified according to a structure (or performance) of the range hood  100 . 
     A temperature of the camera  150  and/or a temperature of glass may be cooled by the second driver  182 ′. A rotating speed of the second motor  182  (or second fan  183 ) may be modified under the control of the controller  110 . The second driver  182 ′ may be implemented as a direct current (DC) fan. In addition, the second driver  182 ′ may be selectively installed or may not be installed in the range hood  100  (e.g., see  FIG. 8A ). 
     The storage  190  may store a signal or data (e.g., corresponding to an image (or video) of a cooking process) that is inputted or outputted to correspond to an operation of elements  110 - 195  under the control of the controller  110 . The storage  190  may store a control program for controlling the range hood  100  or the controller  110  and an application (e.g., camera application, etc.) provided by the manufacturer or downloaded from an external source, a GUI related to the application, images corresponding to the GUI, user information, document, database or relevant data. 
     The storage  190  may store an image (or video) of a cooking process photographed by the camera  150 . The image (or video) of a cooking process may be a concept which includes a binary file corresponding to one or a plurality of images displayed on the touch screen  170  and/or one or a plurality of images stored in the storage  190 . 
     The storage  190  may store visual feedback (e.g., video source, etc.) which may be outputted to correspond to photographing of at least one of a cooking process, a state of the cook top and a state of a cooking container and recognized by the user and auditory feedback (e.g., sound source, etc.) which is outputted from speaker  175  and recognized by the user. 
     The storage  190  may store a feedback providing time (for example, 500 ms) of the feedback provided to a user. 
     In an example embodiment, the term “storage” includes the storage  190 , the ROM  112  within the controller  110 , the RAM  113  or a memory card (e.g., micro secure digital (SD) card, etc., not illustrated) which is mountable in a slot (not illustrated) of the main body  10  of the range hood  100 . The storage  190  may include the non-volatile memory, the volatile memory, a hard disk drive (HDD) or a solid state drive (SSD). 
     The power manager  195  may provide power supply to elements  110 - 195  of the range hood  100  under the control of the controller  110 . The power manager  195  may supply power which is input from an external power source to each element of the range hood  100  via a power code (not illustrated) under the control of the controller  110 . 
     A microphone (not illustrated) may generate (or convert) a voice or sound which is received from an external source to an electric signal under the control of the controller  110 . The electric signal which is generated by the microphone may be converted in an audio codec under the controller of the controller  110  and stored in the storage  190  or outputted through the speaker  175 . The controller  110  may control such that a self-voice recognition application or an external voice recognition application (or external server) performs voice recognition by using the received voice (or sound). 
     The portable device  410  and the display device  420  may be connected to the range hood  100  via a communicator (not illustrated). The external device  400  may, directly or via another device (e.g., cook top, etc.), receive a video (or image) corresponding to a cooking process and/or cooking situation photographed by the range hood  100  through the communicator (not illustrated). The external devices  410 - 440  are merely examples, and any entity which is capable of receiving a video (or image) corresponding to a cooking process and/or cooking situation photographed by the range hood  100  through a communicator (not illustrated) would work similarly. 
     The external device  400  may display the received video (or image) on a display (not illustrated). The external device  400  may include elements (e.g., controller (not illustrated), communicator (not illustrated), display (not illustrated), speaker (not illustrated), storage (not illustrated), power manager (not illustrated), etc.) for receiving and/or reproducing (or displaying) a video (or image). The above-listed elements of the external device  400  are similar to the elements  110 - 195  of the range hood  100  and thus, detailed description thereof may be omitted herein. 
     The above-listed elements of the external device  400  are merely examples, and those skilled in the art would understand that at least one of the elements may be added, deleted or modified according to a structure, function and performance of the external device. 
     In addition, those skilled in the art would understand that at least one of the elements of the range hood  100  illustrated in  FIGS. 1A to 2A  may be added, deleted or modified according to a performance of the range hood  100 . 
     Referring to  FIGS. 2C and 2D , the range hood  100  may be connected with the external device  400  via the cook top  200  by using the communicator  120 . The range hood  100  may transmit a video (or image) which is photographed by the cook top  200  by using the communicator  120 , and the cook top  200  may transmit the received video (or image) to the external device  400 . 
     The range hood of  FIG. 2C  is substantially the same as the range hood of  FIG. 2A  and thus, detailed description thereof will be omitted herein. The external device of  FIG. 2C  is substantially the same as the external device of  FIG. 2A  and thus, detailed description thereof will be omitted herein. 
     The range hood  100  may transmit a photographed (or pre-stored) video (or image) to the cook top  200  by using the communicator  120 . The range hood  100  may directly transmit a photographed (or pre-stored) video (or image) to the cook top  200  by using the communicator  120  without passing through an external device. 
     The cook top  200  may be positioned under the range hood  100 . The cook top  200  may be implemented alone or may be implemented as an oven range which includes an oven at the bottom. 
     Referring to  FIG. 2C , the cook top  200  may be directly connected with an external device  400  by using a communicator  220 . The cook top  200  may be connected with the external device  400  by using an AP (not illustrated) and/or P2P method. The external device  400  may include a portable device  410  including a smart phone, a display device  420  including a TV, home appliance  430  including an air conditioner and a washing machine, or a server  440 . 
     The cook top  200  may transmit operation information corresponding to an operation (e.g., cooking through a heating unit  280 , etc.) or state information corresponding to corresponding to a state (e.g., normal, abnormal, etc.) of the cook top  200  to the range hood  100  and/or the external device  400 , or may receive control information (e.g., control command corresponding to an operation of the heating unit  280  of the cook top  200 ) from an external source. 
     The cook top  200  may have a main body and accommodate a part of elements (e.g.,  210  to  295 ) in the main body. A part of the elements (e.g.,  210  to  295 ) may be exposed outside the main body. 
     The cook top  200  may include a controller  210 , a communicator  220 , a camera  250 , a temperature sensor  260 , a touch screen  270 , a speaker  275 , a heating unit  280 , a storage  290 , and a power manager  295 . The main body of the cook top  200  may include a controller  210 , a communicator  220 , a camera  250 , a temperature sensor  260 , a touch screen  270 , a speaker  275 , a heating unit  280 , a storage  290 , and a power manager  295 . The cook top  200  may include a sensor (e.g., overheating sensor (not illustrated), etc.). In addition, the cook top  200  may further include a microphone (not illustrated) which receives a user voice. 
     The controller  210  may include a processor  211 . The controller  210  may store a non-volatile memory which includes ROM that stores a control program for controlling the cook top  200  and a volatile memory which includes RAM  213  that stores a signal or data inputted from outside the cook top  200  or is used as a storage area with respect to various operations performed on the cook top  200 . 
     The RAM  213  may be used as a storage area with respect to control information received from an external source, operation information of the cook top  200  or state information of the cook top  200 . The processor  211  may include at least one of the ROM  212  and the RAM  213 . Further, the processor  211  may include at least one of the ROM  212  and the RAM  213 . 
     The controller  110  serves to control a signal flow between the overall operation of the cook top  200  and the internal components  210  to  295  of the cook top  200  and process data. The controller  210  may control the power supply to the internal elements  210  to  295  by using the power manager  295 . The processor  211 , the ROM  212 , and the RAM  213  may be connected with one another by a bus. 
     The controller  210  may control a controller  210 , a communicator  220 , a camera  250 , a temperature sensor  260 , a touch screen  270 , a speaker  275 , a heating unit  280 , a storage  290 , and a power manager  295 . 
     According to an example embodiment, the term “controller of a cook top” as used herein may be a concept which includes the processor  211 , the ROM  212 , and the RAM  213 . In addition, “controller of a cook top” may refer to the processor  211 . 
     The communicator  220  may connect with the range hood  100  and the external devices  400  and  410 - 440 , respectively, via a mobile communication network, a wireless LAN communication network, or a near field communication network by using one antenna or two or more antennas under the control of the controller  210 . 
     The wireless LAN communication may be wirelessly connected with an AP at a location where the AP is installed under the control of the controller  210 . For example, the wireless LAN communication may include a Wi-Fi communication. The near field communication may include a Bluetooth communication, a Bluetooth low energy communication, an infrared data association (IrDA) communication, a ultra-wideband (UWB) communication, a Wi-Fi direct, a magnetic security transmission (MST) communication and/or an NFC communication. 
     According to the various example embodiments, the term “communicator” may be connect with an external device via a mobile communication, a wireless LAN communication and/or near field communication. 
     The camera  250  may photograph a still image or video corresponding to a cooking process and/or cooking situation on the upper plate  200   a  of the cook top  200  under the control of the controller  110 . The camera  250  may be positioned in the front of the operation panel  330 . 
     The camera  250  may include an auxiliary (e.g., flash (not illustrated) which provides an amount of light required for photographing. In addition, the camera  250  may be provided with an amount of light required for photographing via an LED  176  of the range hood  100 . 
     The controller  210  may control the storage  290  to store a video (or image) which is photographed through the camera  250 . 
     The temperature sensor  260  may detect a temperature of a cooking container  1  (or object to be cooked) placed on the upper plate  200   a  of the cook top  200 . A smoke sensor (not illustrated) which detects smoke generated from a cooking container  1  (or object to be cooked) placed on the upper plate  200   a  of the cook top  200  may be included. It would be easily understood by those skilled in the art that a sensor type included in the cook top  200  may be added, modified or deleted according to a performance of the cook top  200 . 
     A touch screen  270  (or a display) may provide (or display) a GUI corresponding to various services (e.g., data transmission, displaying of an application or viewing of a photographed video (or image). In an example embodiment, a display may be a concept which includes a touch screen. 
     The touch screen  270  may include a touch panel  272  which receives a user input (e.g., touch) and a display panel  271  for displaying a screen. In the touch screen  270 , the display panel  271  and the touch panel  272  may be implemented as integral-type (e.g., in-cell type touch screen or on-cell type touch screen). 
     The touch screen  270  may include an edge touch screen (not illustrated) having a curvature. The edge touch screen may include an edge touch panel (not illustrated) which receives a user input and an edge display panel (not illustrated) for displaying a screen. The edge touch panel and the edge display panel may be implemented as integral-type as described above. 
     The touch screen  270  may transmit an analog signal corresponding to a single touch (or multi-touch) inputted through a GUI to a touch screen controller (not illustrated). The touch screen  270  may receive a single touch or multi-touch through a body (e.g., fingers including a thumb) of the user or an input pen (e.g., stylus, not illustrated). 
     A touch screen controller (not illustrated) converts an analog signal corresponding to a touch (single touch or multi-touch) received from the touch screen  270  into a digital signal, and transmits the digital signal to the controller  210 . The controller  210  may calculate a position (e.g., x coordinate and y coordinate) of a touch received by the touch screen  270  by using the digital signal received from the touch screen controller (not illustrated). 
     The controller  210  may control the touch screen  270  by using the digital signal received from the touch screen controller (not illustrated). For example, in response to an input touch, the controller  210  may display a shortcut icon (or referred to as icon) selected from among shortcut icons corresponding to applications displayed on the touch screen  270  distinctively from other shortcut icons that are not selected, or may display an application (e.g., video application) corresponding to the selected shortcut icon. 
     The speaker  275  may output sound corresponding to various signals (e.g., broadcast signal, audio source, video file or photo photographing) decoded by an audio codec under the control of the controller  110 . One speaker  275  or two or more speakers  175  may be provided. 
     The heating unit  280  may include a burner (a gas burner or an electric burner, not illustrated) and/or an induction coil (not illustrated) which heats a cooking container  1  placed on the upper plate  200   a  of the cook top  200  under the control of the controller  110 . A burner or induction coil for heating the cooking container  1  described above may be referred to as a fuel intake. 
     The storage  290  may store a signal or data (e.g., corresponding to a video (or image) of a cooking process) which is inputted or outputted to correspond to an operation of the elements  210  to  295  under the control of the controller  210 . The storage  190  may store a control program for controlling the cook top  200  or the controller  110  and an application (e.g., camera application, etc.) provided by the manufacturer or downloaded from an external source, a GUI related to the application, images corresponding to the GUI, user information, document, database or relevant data. 
     The storage  290  may store a video (or image) of a cooking process which is photographed by using the camera  250 . The video (or image) of a cooking process may be a concept which includes a binary file corresponding to one or a plurality of images displayed on the touch screen  270  and/or one or a plurality of images stored in the storage  290 . In addition, the storage  290  may store a video (or image) of a cooking process which is received from the range hood  100 . 
     According to an example embodiment, the term “storage” may include the storage  290 , ROM  212  and RAM  213  of the controller  210 , and a memory card (e.g., micro SD card and universal serial bus (USB) memory, not illustrated) which is mountable in a slot of the operation panel  330  of the range hood  100 . The storage  290  may include the non-volatile memory, the volatile memory, an HDD or an SSD. 
     The power manager  295  may provide power supply to the elements  210  to  295  of the cook top  200  under the control of the controller  110 . The power manager  295  may supply power which is input from an external power source to each element of the cook top  200  via a power code (not illustrated) under the control of the controller  210 . 
     A microphone (not illustrated) may generate (or convert) a voice or sound which is received from an external source to an electric signal under the control of the controller  210 . The electric signal which is generated by the microphone may be converted in an audio codec under the controller of the controller  210  and stored in the storage  290  or outputted through the speaker  275 . The controller  210  may control such that a self-voice recognition application or an external voice recognition application (or external server) performs voice recognition by using the received voice (or sound). 
     In addition, it would be easily understood by those skilled in the art that at least one of the elements of the range hood  100  illustrated in  FIGS. 1A to 2B  may be added, deleted or modified according to a performance of the cook top  200 . 
       FIG. 3  is a sectional view illustrating a range hood having a camera according to various embodiments of the present disclosure. 
     Referring to  FIG. 3 , a bottom surface  10   b  of the range hood  100  may be positioned at a distance H away from the upper plate  200   a  of the cook top  200 . The spaced distance H may be greater than 60 cm. In addition, the spaced distance H may be less than 99 cm. The spaced distance H may be different according to at least one of a type of the cook top (e.g., a gas range, an electric range, an induction range or a hybrid range which is a combination of electric range and induction range) and a first driver  180 ′. 
     When a virtual vertical line is drawn from the front surface  10   a  of the range hood  100  to the upper plate  200   a  of the cook top  200 , the front surface  10   a  of the range hood  100  may be positioned on top of the upper plate  200   a  of the cook top  200 . 
     A distance L 3  from a rear surface  10   d  (or wall (not illustrated)) of the range hood  100  to a front surface  10   a  of the range hood  100  is longer (larger) than a distance L 2  from a rear surface (or wall) of the range hood  100  to a camera  150  of the range hood  100 . A distance L 4  from a rear surface  200   c  (or wall) of the cook top  200  to a front surface  200   b  of the cook top  200  is longer (larger) than a distance L 3  from a rear surface  10   d  (or wall) of the range hood  100  to a front surface  10   a  of the range hood  100 . 
     A distance L 2  from a rear surface  10   d  (or wall) of the range hood  100  to a camera  150  of the range hood  100  is longer (larger) than a distance L 1  from a front surface  10   a  of the range hood  100  to a front surface  200   b  of the cook top  200 . A front surface  10   a  of the range hood  100  may be positioned behind (e.g., in the −y-axis direction) a front surface  200   b  of the cook top  200  with respect to a wall (not illustrated). 
     When a front surface  200   b  of the cook top  200  is positioned behind a front surface  10   a  of the range hood  100 , an optical axis of the camera  150  may be inclined with respect to an upper plate  200   a  of the cook top  200 . 
     An optical axis of the camera  150  may correspond to a center point C that is a half of a distance L 4  from a rear surface  200   c  (or wall) of the cook top  200  to a front surface  200   b  of the cook top  200 . In addition, an optical axis of the camera  150  may correspond to a center point (e.g., an intersection of the straight lines connecting four corners of the upper plate  200   a  (not illustrated)) of the upper plate  200   a  of the cook top  200 . A center point C which is a half of a distance L 4  from a rear surface  200   c  (or wall) of the cook top  200  to a front surface  200   b  of the cook top  200  and a center point of the upper plate  200   a  of the cook top  200  may be at different positions. 
     An optical axis inclination (θ) of the camera  150  may be represented by the following mathematical equation. 
     
       
         
           
             
               
                 
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                       [ 
                       
                         
                           
                             L 
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                             2 
                           
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                               L 
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                   Equation 
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     Here, H refers to a distance from an upper plate  200   a  of the cook top  200  to a bottom surface  10   b  of the range hood  100 , and L 2  refers to a distance from a rear surface (or wall) of the range hood  100  to a camera  150  of the range hood  100 . In addition, L 4  refers to a distance from a rear surface (or wall) of the cook top to a front surface  200   b  of the cook top  200 . 
     When a front surface  200   b  of the cook top  200  is positioned behind a front surface  10   a  of the range hood  100 , an optical axis of the camera  150  may be inclined by a setting angle θ (e.g., 15° or less) with respect to a virtual line vertically extending from an upper plate  200   a  of the cook top  200 . An optical axis inclination θ of the camera  150  may be changed according to at least one of a value of H, a value of L 2  and a value of L 4  described above. 
       FIG. 4  is a flowchart illustrating a method for controlling a range hood having a camera according to an embodiment of the present disclosure. 
       FIGS. 6A, 6B, 6C, 6D, 6E, and 6F  are diagrams illustrating an example of a method of controlling a range hood having a camera, according to an embodiment of the present disclosure. 
     Referring to  FIG. 4 , in operation S 410  of  FIG. 4 , cooking starts in the cooking device and the power of a range hood are turned on (or power is supplied to the range hood). 
     Referring to  FIG. 6A , a user may start cooking with respect to a cooking container  1  placed on an upper plate  200   a  of a cook top  200  (or cooking device) by using an operation panel  330 . The user may input a cooking option (e.g., select at least one burner, an intensity of the burner (or thermal power of the burner, timer, etc.) with respect to the cooking container  1  through the operation panel  330 . 
     The user may supply power to the range hood  100 . The user may select  173   a  (or touch) a power button  171   a  of a touch screen  170 . A controller  110  of a range hood  100  may detect a user selection  173   a  (touch) by using a touch screen  170  and a touch screen controller (not illustrated). The controller  110  may supply power to the range hood  100  in response to the user input  173   a.    
     In operation S 420  of  FIG. 4 , a cooking process is photographed by a camera of the range hood. 
     Referring to  FIG. 6B , the camera  150  of the range hood  100  may photograph (at least one of a still image and video) a cooking process performed on the cook top  200  positioned at the bottom. In response to power supply of the range hood  100 , the controller  110  may control the camera  150  to start photographing (e.g., automatically). In addition, the controller  110  of the range hood  100  powered on may manually control the camera  150  to start photographing according to a selection of a button  170   k  by the user. 
     The camera  150  may have an angle of view capable of photographing an upper plate  200   a  of the cook top  200 . The camera  150  may have an angle of view which is capable of photographing an upper plate  200   a  and operation panel  330  of the cook top  200 . 
     The camera  150  may photograph a part (e.g., a few seconds after cooking starts, a few seconds after a periodic time interval (e.g., 1 min or 30 sec), a few seconds before cooking completes, some seconds after cooking completes) of a cooking process or a whole cooking process as a still image or a video. The camera may photograph a cooking situation (e.g., overheating of a cooking container (or object to be cooked), over cook, or whether or not smoke is generated) as a still image or a video. 
     During photographing of the camera  150 , the controller  110  may detect a temperature of a cooking container  1  (or object to be cooked) placed on the upper plate  200   a  of the cook top and/or smoke which is generated from the cooking container  1  (or object to be cooked) placed on the upper plate  200   a  of the cook top. When a sensor  160  detects an abnormality (e.g., over heat, detection of smoke, etc.) during a cooking process and/or a cooking situation, the controller  110  may provide the user a warning (or alarm) through a touch screen  170  and/or a speaker  175 . 
     The controller  110  may perform a video recognition (or image recognition) using a photographed video (or image). 
     According to an example embodiment, the controller  110  may recognize a position size and/or boundary of the cook top  200  by using a photographed video (or image). The controller  110  may recognize a position, size and/or boundary of an upper plate  200   a  of the cook top  200  by using a photographed video (or image). Regarding a video (or image) photographed through the camera  150 , the controller  110  may differently recognize a relative size, position (e.g., tilt) and/or shape (e.g., rectangle or trapezoid) of the cook top  200  (or upper plate ( 200   a ) according to an optical axis inclination θ. 
     The controller  110  may determine (or recognize) a position, size and/or boundary of the cook top  200  (or upper plate  200   a ) by matching a photographed video (or image) and an image of the cook top  200  that is pre-stored. The controller  110  may determine (or recognize) a position, size and/or boundary of the cook top  200  (or upper plate  200   a ) by using a contour detection algorithm. 
     When a position of the cook top  200  (or upper plate  200   a ) is determined, the controller  110  may correct (e.g., crop a background due to tilting) tilting of the cook top  200 . When a position of the cook top  200  (or upper plate  200   a ) is determined, the controller  110  may correct (e.g., rotational correction) an angle of the cook top  200 . When a position of the cook top  200  (or upper plate  200   a ) is determined, the controller  110  may correct (e.g., correct a trapezoid to a rectangle) a shape of the cook top  200 . In addition, when a position of the cook top  200  (or upper plate  200   a ) is determined, the controller  110  may notify (e.g., sound such as an alarm, etc.) the user of “the cook top  200  is invisible” in the photographed video (or image). 
     According to an example embodiment, the controller  110  may recognize a position of a fuel intake (e.g., a heating area (not illustrated) corresponding to a burner or an induction coil) and/or a fuel intake area of the cook top  200  by using a photographed video (or image). 
     The controller  110  may recognize (or distinguish) a burner and a metal grate supporting a cooking container on the burner, respectively, by using a photographed video (or image). In addition, the controller  110  may recognize (or distinguish) a heating area guide located on an upper plate of an induction range (which, for example, is located on an upper plate on an induction coil and indicates a heating area heated by the induction area in a circular (or polygonal) shape) by using a photographed video (or image). The controller  110  may determine the number of flame intakes of the cook top  200  by using a photographed video (or image). 
     According to an example embodiment, the controller  110  may recognize a cooking container  1  which is placed on the upper plate  200   a  of the cook top  200  by using a photographed video (or image). 
     The controller  110  may recognize (or distinguish) a flame intake and a cooking container  1  on the flame intake (or on a metal grate) by using a photographed video (or image). For example, the controller  110  may recognize (or distinguish) an opening or closing (e.g., whether a cooking container is placed on a flame intake) of a flame intake from a photographed video (or image). The controller  110  may recognize (or distinguish) an opening or closing of a flame intake by matching a photographed video (or image) with an image of the flame intake that is pre-stored. In addition, the controller  110  may recognize (or distinguish) the placement of a cooking container  1  by using a photographed video (or image) of the cooking container  1  that is pre-stored. 
     According to an example embodiment, the controller  110  may recognize whether or not a flame intake (e.g., corresponding to heating of a cooking container  1 ) of the cook top  200  is operated by using a photographed video (or image). In addition to the photographing of the camera  150 , the controller  110  may receive operation information corresponding to an operation (e.g., burner on/off) of a knob (see  FIG. 1 ) in an operation panel  330  of the cook top  200  via a communicator  120 . 
     The controller  110  may confirm whether or not a cooking operation (e.g., boiling of water, steam generation or smoke generation) is performed in the cook top  200  through the received operation information. For example, the controller  110  may recognize boiling of water contained in the cooking container  1  by using a photographed video (or image). The controller  110  may recognize the boiling of water contained in the cooking container  1  by using (e.g., bubble generation detection algorithm) a photographed video (or image). In addition, the controller  110  may recognize the boiling of water contained in the cooking container  1  by using (e.g., detecting a difference of a red, green, blue (RGB) value of a pixel corresponding to a foam generation) a photographed video (or image). 
     The controller  110  may control a first driver  180 ′ and/or a second driver  182 ′ to be operated in response to the boiling of water. 
     According to an example embodiment, the controller  110  may recognize (or distinguish) whether or not smoke is generated in the cook top  200  by using a photographed video (or image). The colors of smoke include white, gray or black. In addition, the colors of smoke may include a combination of white, gray and black. The controller  110  may recognize (or distinguish) whether or not smoke is generated in the cook top  200  by using a difference (or color difference) of a RGB value of a pixel in a photographed video (or image). The controller  110  may recognize (or distinguish) whether or not smoke is generated in the cook top  200  by using a photographed video (or image) or a smoke detection algorithm. 
     The controller  110  may control a first driver  180 ′ and/or a second driver  182 ′ in response to the generation of smoke. 
     According to an example embodiment, the controller  110  may recognize (or distinguish) fogging of a glass  151   a  positioned on the front side of the camera  150  by using a photographed video (or image). The controller  110  may recognize fogging by comparing Laplacian values with respect to a foggy (or blurred) area in a photographed video (or image). 
     The controller  110  may control at least one of the first driver  180 ′ and the second driver  182 ′ to be operated in response to the generation of fogging in the glass  151   a . When the fogging generated in the glass  151   a  is removed by an operation of a driver (at least one of  180 ′ and  182 ′), the controller  110  may control a driver ( 180 ′ or  182 ′) that is operated to stop operating. 
     According to an example embodiment, the controller  110  may recognize (or distinguish) a foreign object in a glass  151   a  positioned on a front side of the camera  150  by using a photographed video (or image). The recognition (or distinguishing) of a foreign object attached to a glass  151   a  is similar to the recognition (or distinguishing) of fogging of the glass described above, and thus, detailed description thereof will be omitted herein. 
     The controller  110  may perform video recognition (image recognition) by using an external device  400 . The controller  110  may perform video recognition (image recognition) by using a part (e.g.,  410 ,  440 , etc.) of an external device  400 . In addition, the controller  110  may perform a voice recognition (or image recognition) by using a combination of external devices  410  to  440 . 
     The storage  190  may store a video (or image) which is photographed through the camera  150  under the control of the controller  110 . 
     In operation S 430  of  FIG. 4 , an external device is connected. 
     Referring to (a) of  FIG. 6C , a shortcut icons  419   b  corresponding to applications selectable by a user touch (e.g., including hovering) and/or a widget (not illustrated) may be displayed on a home screen  419   a  of a touch screen  419  of a portable device  410 . A status bar  419   c  for displaying a status of the portable device  410 , such as a battery charging state, an intensity of a reception signal, and a current time, may be displayed on an upper end of the home screen  419   a . In addition, a home screen  419   a  of the portable device  410  may be positioned on a lower end of the status bar  419   c  or the status bar  419   c  may not be displayed and only the home screen  419   a  may be displayed. 
     A user input  460   a  (e.g., touch or hovering) may be received in a shortcut icon  419   b   1  corresponding to an application (e.g., ‘smart home’) capable of controlling a range hood  100  and/or a cook top  200  from among shortcut icons  419   b  of applications that are selectable. The application (‘smart phone’) which is capable of controlling the range hood  100  and/or the cook top  200  may be pre-installed (or installed) in the portable device  410  or may be downloaded by a user. 
     Referring to (b) of  FIG. 6C , a controller (not illustrated) of the portable device  410  may detect a user input  460   a  by using a touch screen  419  and a touch screen controller (not illustrated). A controller (not illustrated) of the portable device  410  may calculate a position  460   a   1  (e.g., X1 coordinate and Y1 coordinate) of a user input corresponding to a user input  460   a  by using an electric signal received from a touch screen controller (not illustrated). 
     A controller (not illustrated) of the portable device  410  may display an application screen  470  which corresponds to the shortcut icons  419   b  in response to receiving a user input  460   a . The name of the application screen  470  may be ‘Add Device  470   b ’. The application screen  470  may display shortcut icons  470   a , which correspond to an electronic device that is to be added (or controlled) to the application (‘smart home’). 
     A user input  460   b  (e.g., touch or hovering) may be received in a shortcut icon  470   a   1  corresponding to the range hood  100  from among the shortcut icons  470   a  of an application that are selectable. 
     Referring to  FIG. 6D , a controller of the portable device  410  may detect a user input  460   b  by using a touch screen  419  and a touch screen controller (not illustrated). A controller of the portable device  410  may calculate a position  460   b   1  (e.g., X2 coordinate and Y2 coordinate) of a user input corresponding to a user input  460   b  by using an electric signal received from a touch screen controller (not illustrated). 
     A controller of the portable device  410  may display a pop-up  470   c  corresponding to a selection  460   b  of a shortcut icon  470   a   1  in response to receiving the user input  460   b . The name of the pop-up  470   c  may be ‘Select Add  470   c   1 ’. A text  470   c   2  corresponding to an electronic device (e.g., a range hood) that may be selected (or added) by a user may be displayed in the pop-up  470   c.    
     A user input  470   c   2  (e.g., touch or hovering) may be received in the name  470   c   2  of home appliance to be selected. 
     Referring to  FIG. 6E , a controller of the portable device  410  may detect a user input  460   c  by using a touch screen  419  and a touch screen controller (not illustrated). A controller of the portable device  410  may calculate a position  460   c   1  (e.g., X2 coordinate and Y2 coordinate) of a user input corresponding to a user input  460   c  by using an electric signal received from a touch screen controller (not illustrated). 
     A controller of the portable device  410  may display a pop-up  470   d  corresponding to a selection  460   b  of a shortcut icon  470   a   1  in response to receiving the user input  460   c.    
     The pop-up  470   d  may be ‘Connecting. Please press a Wi-Fi button in the range hood.’  470   d   1 . In addition, a position of a Wi-Fi button  171   j  (or wireless connection button) of the range hood  100  may be displayed in the pop-up  470   d.    
     The user may select  173   b  (or touch) a wireless connection button  171   j  of a touch screen  170 . A controller  110  of a range hood  100  may detect a user selection  173   b  (touch) by using a touch screen  170  and a touch screen controller (not illustrated). The controller  110  may retrieve an external device  400  which is connectable by using a communicator  120  in response to a user selection  173   b.    
     A user input  173   b  (e.g., touch) may be received in a Wi-Fi button  171   j  on the touch screen  170  of the range hood  100 . 
     The portable device  410  (or application (‘smart home’) may authenticate a range hood  100  through a user input  173   b  in the range hood  100 . 
     When authentication of the range hood  100  is completed, a Wi-Fi password (not illustrated) connecting the range hood  100  and a wireless router (not illustrated) may be input to an application screen (not illustrated) by a user. 
     By the input Wi-Fi password, the range hood  100  and the wireless router (not illustrated) may be connected to each other. In addition, authentication for connecting the range hood  100  and the server  440  may be additionally performed. Through connection between the server  440  and the range hood  100 , the server  440  may provide upgrade of the range hood  100  and/or additional service (e.g., maintenance). In addition, through the connection between the server and the range hood  100 , the server  440  may receive at least one of a video and image photographed from the range hood  100  via a communicator (not illustrated) and store it in a storage (not illustrated). 
     When the range hood  100  is connected to a wireless router, an application (‘smart home’) installed in the portable device  410  may remotely control the range hood  100 . 
     The operation S 430  of  FIG. 4  described above may be carried out between the operation S 410  of  FIG. 4  and the operation S 420  of  FIG. 4 . 
     Referring back to  FIG. 4 , in operation S 440 , a photographed image (or video) may be transmitted to an external device that is connected. 
     When the communicator  120  of the range hood  100  and the wireless router (not illustrated) are connected, the controller  110  may transmit a photographed (stored) video (or image) to the wireless router (not illustrated) via the communicator  120 . The wireless router (not illustrated) may transmit the received video (or image) to a communicator (not illustrated) of the portable device  410 . A controller (not illustrated) of the portable device  410  may receive a video (or image) which is transmitted from the wireless router (not illustrated). 
     After the portable device  410  and the range hood  100  are connected for the first time, the portable device  410  may receive a video  475   d  (or image) photographed by the camera  150  of the range hood  100  and display it on a screen. 
     The portable device  410  and the range hood  100  may be connected using a P2P method. When the portable device  410  and the range hood  100  are connected using the P2P method, the controller  110  may directly transmit a photographed (stored) video (or image) to the portable device  410  via the communicator  120 . 
     Referring to  FIG. 6F , a name  471   a  of a product to be photographed and a video  471   b  (or image) photographed by the camera  150  of the range hood  100  may be displayed on an application screen  471 . 
     In operation S 440  of  FIG. 4 , when a video (or image) photographed by a connected external device is transmitted, a method for controlling a range hood is ended. 
       FIGS. 7A, 7B, 7C, 7D, and 7E  are diagrams illustrating an example of a method for controlling a range hood having a camera and an external device according to another example embodiment. 
     In operation S 430  of  FIG. 4 , an external device is connected. 
     Referring to  FIG. 7A , shortcut icons  429   b  corresponding to applications that are selectable by a user input (e.g., using a remote control device  450 ) may be displayed at a bottom end of a screen  429  (e.g., liquid crystal display (LCD), LED, quantum dot (QDOT), QDOT LED (QLED), etc.) of a display device  420 . The shortcut icons  429   b  may be overlapped with a content screen  429   a  and displayed. 
     The wireless connection between a display device  420  and a range hood  100  of  FIG. 7  may be substantially similar (e.g., difference in external device) to the wireless connection between a portable device  410  and a range hood  100  of  FIG. 6 . In addition, a wireless connection between another external device (e.g., home appliance  430  or server  440 ) and a range hood  100  may be substantially similar to the above. For example, when a communicator  120  of a range hood  100  is connected to a communicator (not illustrated) of a home appliance  430 , at least one of a video and image photographed by a camera of the range hood  100  may be received via the communicator (not illustrated) of the home appliance  430 . A controller (not illustrated) of the home appliance  430  may be control a display (not illustrated) of the home appliance  430  to display at least one of a video and image that are received. In addition, when the communicator  120  of the range hood  100  is connected to a communicator (not illustrated) of a server  440 , at least one of a video and image photographed by a camera of the range hood  100  may be received via the communicator (not illustrated) of the server  440 . A controller (not illustrated) of the server  440  may control such that at least one of the received video and image is stored in a storage (not illustrated). 
     A user input (e.g., remote control device  450 , user voice, user motion, etc.) may be received in a shortcut icon  429   b   1  corresponding to an application (e.g., ‘range hood’) capable of controlling the range hood  100  from among the shortcut icons  429   b  of applications that are selectable. In addition, a user input (e.g., remote control device  450 , user voice, user motion, etc.) may be received in a shortcut icon (not illustrated) corresponding to an application (e.g., ‘smart home’) capable of controlling the range hood  100  and/or the cook top  200  from among the shortcut icons  429   b  of applications that are selectable. 
     An application (e.g., ‘range hood’) capable of controlling the range hood  100  may be pre-installed (or installed) or downloaded by a user and installed. In addition, an application (‘smart phone’) which is capable of controlling the range hood  100  and/or the cook top  200  may be pre-installed (or installed) in the display device  420  or may be downloaded by a user. The above-described application (‘range hood’) may be a sub application included in an application (‘smart home’) or may be a separate application. 
     A user may select a shortcut icon  429   b   1  corresponding to an application (e.g., ‘range hood’) capable of controlling the range hood  100  by using the remote control device  450 . 
     Referring to  FIG. 7B , a controller (not illustrated) of the display device  420  may receive (or detect) a selection of a shortcut icon  429   b   1  by the remote control device  450  by using a communicator (not illustrated) and/or optical receiver (not illustrated). 
     The controller (not illustrated) of the display device  420  may display a pop-up  475  in response to a selection of the shortcut icon  429   b   1  by the remote control device  450 . 
     A name of the pop-up  470   c  may be ‘Select range hood’  475   a . A text  475   b  corresponding to an electronic device (e.g., a range hood) that may be selected (or added) by a user may be displayed in the pop-up  475 . 
     A user input (e.g., one of a remote control device, user voice and user motion) may be received in a text  475   b  corresponding to an electronic device to be selected. 
     Referring to  FIG. 7C , a controller of the display device  420  may receive (or detect) a selection of a text  475   b  by the remote control device  450  by using a communicator (not illustrated) and/or optical receiver (not illustrated). 
     The controller of the display device  420  may display a pop-up  475   c  in response to receiving a selection of the text  475   b . The pop-up  475   c  may be ‘Connecting. Please press a Wi-Fi button in the range hood’  470   c   1 . In addition, a position of a Wi-Fi button  171   j  of the range hood  100  may be displayed in the pop-up  475   c.    
     A user input  173   f  (e.g., touch) may be received in a Wi-Fi button  171   j  on the touch screen  170  of the range hood  100 . 
     The portable device  410  (or application (‘range hood’ or ‘smart home’) may authenticate a range hood  100  through a user input  173   f  in the range hood  100 . 
     When authentication of the range hood  100  is completed, a Wi-Fi password (not illustrated) connecting the range hood  100  and a wireless router (not illustrated) may be input to an application screen (not illustrated) by a user. 
     By the input Wi-Fi password, the range hood  100  and the wireless router (not illustrated) may be connected to each other. In addition, authentication for connecting the range hood  100  and the server  440  may be additionally performed. Through connection between the server  440  and the range hood  100 , the server  440  may provide upgrade of the range hood  100  and/or additional service (e.g., maintenance). 
     When the range hood  100  is connected to a wireless router, an application (‘range hood’ or ‘smart home’) installed in the display device  420  may remotely control the range hood  100 . 
     In operation S 440  of  FIG. 4 , a photographed video (or image) may be transmitted to an external device that is connected. 
     When the communicator  120  of the range hood  100  and the wireless router (not illustrated) are connected, the controller  110  may transmit a photographed (stored) video (or image) to the wireless router (not illustrated) via the communicator  120 . The wireless router (not illustrated) may transmit the received video (or image) to a communicator (not illustrated) of the display device  420 . A controller (not illustrated) of the display device  420  may receive a video (or image) which is transmitted from the wireless router (not illustrated). 
     The display device  420  and the range hood  100  may be connected using a P2P method. When the display device  420  and the range hood  100  are connected using the P2P method, the controller  110  may directly transmit a photographed (stored) video (or image) to the display device  420  via the communicator  120 . 
     Referring to  FIG. 7D , a video  475   d  (or image) which is photographed by a camera  150  of the range hood  100  may be displayed on a screen  429  of the display device  420 . After the display device  420  and the range hood  100  are connected for the first time, the display device  420  may receive a video  475   d  (or image) photographed by the camera  150  of the range hood  100  and display it on a screen. 
     Referring to  FIG. 7E , when the display device  420  and the range hood  100  are wirelessly connected to each other (e.g., after operation S 430  of  FIG. 4  is carried out), the display device  420  may display a video (or image) which is photographed from the range hood  100  on a screen of the display device  420  through a button (or a combination of a plurality of buttons) in a remote control device  450 . 
     When a user selects one button (e.g.,  450   a ) or a plurality of buttons (e.g.,  450   a  and  450   b  in combination) in the remote control device  450 , a controller of the display device  420  may receive (or detect) a selection of the button using the remote control device  450  by using a communicator (not illustrated) and/or an optical receiver (not illustrated). 
     The controller (not illustrated) of the display device  420  may request the range hood  100  to transmit a photographed video (or image) in response to the selection of the button using the remote control device  450  by using the communicator (not illustrated). 
     The controller  110  of the range hood  100  may transmit a video (or image) which is photographed by the camera  150  to the portable device  410  via the communicator  120  according to the request of the display device  420 . 
     A controller of the display device  420  may display the video (or image) which is received from the range hood  100  on an additional screen  429   d  of the display device  420 . The additional screen  429   d  may be displayed using a picture-in-picture (PIP) method. The additional screen  429   d  may be displayed as being overlapped with a screen  429   c  (or content screen) of the display device  420 . The additional screen  429   d  may be disposed on one side (e.g., a corner area or a random area) of the screen  429   c  of the display device  420 . An area of the additional screen  429   d  may be smaller than an area of a screen  429   c  (or content screen) of the display device  420 . 
     The controller of the display device  420  may change an area (or size) of the additional screen  429   d  by operating (e.g., drag-and-drop) the remote control device  450 . The controller of the display device  420  may change a position of the additional screen  429   d  by operating (e.g., drag-and-drop) the remote control device  450 . The controller of the display device  420  may enlarge a video (or image) which is displayed on the additional screen  429   d  to the screen  429   c  of the display device  420  by operating (e.g., double click or double touch) the remote control device  450 . In addition, the controller of the display device  420  may reduce the video (or image) which is displayed on the screen  429   c  of the display device  420  again to the additional screen  429   d  by operating (e.g., additional double click or additional double touch) the remote control device  450 . 
       FIGS. 8A and 8B  are diagrams illustrating a method for controlling a range hood having a camera according to an embodiment of the present disclosure. 
     Referring to  FIGS. 8A and 8B , a user may remotely check a video (or image) which is photographed in the range hood  100  by using an application installed in the portable device  410 . The controller  110  of the range hood  100  may transmit a video (or image) which is photographed by the camera  150  to the portable device  410  via an external device or directly in accordance with a request of a portable terminal (or application). In additional, various home appliances  430  which are positioned at home (e.g., refrigerator, air conditioner, washing machine, robot cleaner, air purifier, dehumidifier, humidifier, etc.) as well as the range hood  100  may transmit a video (or image) photographed by a camera (not illustrated) positioned in the home appliance to the portable device  410  via an external device or directly in accordance with a request of the portable terminal (or application). 
     Referring to (a) of  FIG. 8A , a user input  460   d  may be received in a shortcut icon  427   a   1  from among a plurality of shortcut icons  472   a  that are selectable from an application screen  472  of the portable device  410 . 
     The controller (not illustrated) of the portable device  410  may detect the user input  460   d  by using a touch screen  419  and a touch screen controller (not illustrated). The controller (not illustrated) of the portable device  410  may calculate a position  460   d   1  (e.g., X1 coordinate and Y1 coordinate) of a user input corresponding to a user input  460   d  by using an electric signal received from a touch screen controller (not illustrated). 
     Referring to (b) of  FIG. 8A , the controller (not illustrated) of the portable device  410  may display an application screen  473  (e.g., ‘home view’) corresponding to the shortcut icon  472   a   1  in response to receiving the user input  460   d.    
     Videos (or images) which are photographed by a camera (not illustrated) may be respectively displayed  473   a  to  473   f  on the application screen  473 . The videos (or images) may be respectively displayed as being smaller than an area of the touch screen  419  to correspond to the number of external devices  400  wirelessly connected to the portable device  410 . For example, when the number of external devices  400  wirelessly connected to the portable device  410  is one, the number of videos (or images) displayed on the application screen  473  may be one. When the number of external devices  400  wirelessly connected to the portable device  410  is six, the number of videos (or images) displayed on the application screen  473  may be six. 
     A size (or area) of the videos (or images) displayed on the application screen  473  may differ according to the number of external devices  400  wirelessly connected to the portable device  410 . For example, an area of videos (or images) in which the number of external devices wirelessly connected to the portable device  410  is one may be larger than an area of videos (or images) in which the number of external devices  400  wirelessly connected to the portable device  410  is six. 
     A user input  460   e  may be received in a video (or image) corresponding to the range hood  100  in the application screen  473 . 
     A controller of the portable device  410  may detect a user input  460   e  by using a touch screen  419  and a touch screen controller (not illustrated). The controller (not illustrated) of the portable device  410  may calculate a position  460   e   1  (e.g., X5 coordinate and Y5 coordinate) of a user input corresponding to a user input  460   e  by using an electric signal received from a touch screen controller (not illustrated). 
     The controller of the portable device  410  may display an application screen  474  (e.g., ‘range hood view’) corresponding to a video (or image) photographed from the range hood  100  in response to receiving the user input  460   e.    
     Referring to (c) and (d) of  FIG. 8B , the controller of the portable device  410  may display a video (or image, one of  474   a  and  474   a ′) which is photographed from the range hood  100  on the application screen  474  in response to receiving the user input  460   e . The controller of the portable device  410  may display a video (or image, one of  474   a  and  474   a ′) which is photographed from the range hood  100  on the application screen  474  corresponding to reception of the user input  460   e  and an orientation of the portable device  410 . 
       FIG. 5  is a flowchart illustrating a method for controlling a range hood having a camera and a cook top according to another embodiment of the present disclosure. 
     Referring to  FIG. 5 , a schematic flowchart illustrates a method for controlling a range hood having a camera and a cook top may be substantially similar (e.g., a cook top is added) to the schematic diagram illustrating a method for controlling a range hood having a camera of  FIG. 4 . 
     In operation S 510  of  FIG. 5 , cooking starts in the cooking device and the power of a range hood is turned on. The operation S 510  of  FIG. 5  is substantially similar to the operation S 410  of  FIG. 4  and, thus, the redundant description is omitted herein. 
     In operation S 520  of  FIG. 6 , a range hood is connected. 
     A cook top  200  (or cooking device) and the range hood  100  may be wirelessly connected to each other. When it is difficult to transmit a video (or image) photographed in the range hood  100  to an external device  400  (or when transmission of wireless data to an external device is in bad quality), the video (or image) photographed in the range hood  100  may be transmitted (via wired communication or wireless communication) to the cook top via the communicator  120 . When it is difficult to transmit a video (or image) photographed in the range hood  100  to an external device  400  (or when transmission of wireless data to an external device is in bad quality), the video (or image) photographed in the range hood  100  may be transmitted to the cook top via the communicator  120  using a Bluetooth method or a Bluetooth low energy. 
     The cook top  200  may be always connected to the range hood  100  via wireless communication (e.g., Bluetooth low energy or Bluetooth), or may be automatically connected  171   i  (by selecting an auto connectivity button, see  FIG. 1B ) to the touch screen  170 . 
     A storage  290  of the cook top  200  and/or a storage  190  of the range hood  100  may respectively store wireless connection information (e.g., a service set identifier (SSID), an internet protocol (IP) address, a connection password, etc.). 
     In operation S 530  of  FIG. 5 , a video (or image) corresponding to a cooking process photographed by a camera of the range hood is received. 
     When the cook top  200  and the range hood  100  is connected wirelessly (or via cable), a controller  110  of the range hood  100  may transmit a video (or image) corresponding to a cooking process photographed through a camera  150  to a communicator  220  of the cook top via a communicator  120 . When no additional user input is received, a controller  110  of the range hood  100  may continuously transmit a video (or image) corresponding to a cooking process photographed through a camera  150  to a communicator  220  of the cook top via a communicator  120 . 
     A controller  210  of the cook top  200  may store the received video (or image) in a storage  290 . 
     In operation S 540  of  FIG. 5 , an external device is connected. 
     In operation S 540  of  FIG. 5 , the cook top  200  and an external device  400  may be connected to each other, and in operation S 430  of  FIG. 4 , the range hood  100  and the external device  400  may be connected to each other. 
     The connection between the cook top  200  and the external device  400  is substantially similar to the connection between the range hood  100  and the external device  400  and thus, redundant description will be omitted herein. For example, in (a) of  FIG. 6C  corresponding to the operation S 430  of  FIG. 4 , a shortcut icon  470   a   1  corresponding to the range hood  100  in a home screen  419   a  displayed on a touch screen  419  (or referred to as ‘display’) of a portable device  410  may be selected by a user, and in the operation S 540  of  FIG. 5 , a shortcut icon (not illustrated) corresponding to the cook top  200  in the home screen  419   a  displayed on the touch screen  419  of the portable device  410  may be selected by a user. 
     A process after a short icon (not illustrated) corresponding to the cook top  200  is selected by a user in the operation S 540  of  FIG. 5  is substantially similar to a process after a shortcut icon  470   a   1  corresponding to the range hood  100  in the operation S 430  of  FIG. 4  is selected by a user and thus, redundant description will be omitted herein. 
     In operation S 550  of  FIG. 5 , a photographed image (or video) may be transmitted to an external device that is connected. 
     A controller (not illustrated) of the cook top  200  may transmit the video (or image) received from the range hood  100  to external devices  410  to  440  via a communicator (not illustrated). 
     The transmission of a video (or image) received from the cook top  200  to the external device  400  in the operation S 550  of  FIG. 5  is substantially similar to the transmission of a video (or image) received from the range hood  100  to the external device  400  and thus, redundant description will be omitted herein. 
     In operation S 550  of  FIG. 5 , when a video (or image) is transmitted to a connected external device, a method for controlling a range hood and a cook top is ended. 
       FIGS. 9A and 9B  are sectional views illustrating a range hood having a camera, according to another embodiment of the present disclosure. 
     Referring to  FIG. 9A , a range hood  100 - 1  according to another example embodiment is illustrated. In  FIG. 9A , a second driver  182 ′ is removed from the range hood  100 - 1  unlike the range hood  100  of  FIG. 3 . The range hood  100 - 1  from which the second driver  182 ′ is removed is substantially similar to the range hood  100  of  FIG. 3  and thus, redundant description will be omitted herein. 
     The range hood  100 - 1  from which the second driver  182 ′ is removed of  FIG. 9A  may absorb a smoke, cooking paper and/or odor which are generated in the cooking process through a cooking container  1  placed on the upper plate  200   a  of the cook top  200  by using a first driver  180 ′. 
     Referring to  FIG. 9B , a range hood  100 - 2  according to another example embodiment is illustrated. In  FIG. 9B , a camera  150  is removed from the range hood  100 - 2  unlike the range hood  100  of  FIG. 3 . The range hood  100 - 2  from which the camera  150  is removed is substantially similar to the range hood  100  of  FIG. 3  and, thus, a redundant description will be omitted herein. 
     The range hood  100 - 2  from which the camera  150  is removed of  FIG. 9B  may photograph a video (or image) of a cooking process of a cooking container  1  placed on an upper plate  200   a  of the cook top  200  by using a camera (not illustrated) of an additional portable device  410 - 1 . The additional portable device  410  may come in contact with a bottom surface  10   b  of the range hood  100  by one or a plurality of magnets  10   f.    
     A communicator (not illustrated) of the additional portable device  410  may be connected to a communicator (not illustrated) of the range hood  100 - 2  wirelessly (or via cable). In addition, the communicator (not illustrated) of the additional portable device  410  may be connected to a communicator  220  of the cook top  200  wirelessly (or via cable). The additional portable device  410 - 1  may transmit the photographed video (or image) to at least one of the range hood  100 - 2  and the cook top  200 . 
     The methods according to various embodiments of the present disclosure may be implemented as a program instruction type that may be performed through various computer units and may be recorded in a non-transitory computer readable medium. The computer-readable medium may include a program command, a data file, a data structure or the like, alone or a combination thereof. For example, the computer-readable medium may be stored in a volatile or non-volatile storage device such as a ROM, a memory such as a RAM, a memory chip, and a device or an integrated circuit, or a storage medium which may be read with a machine (for example, computer) simultaneously with being optically or magnetically recorded like a compact disc (CD), a digital versatile disc (DVD), a magnetic disk, a magnetic tape, or the like, regardless of whether it is deleted or again recorded. 
     In additional, the computer-readable medium may be stored in a computer-readable storage medium of a server, and the computer program may be downloaded to a computing device via network. 
     The memory which may be included in a range hood may be one example of a storage medium which may be read with programs including instructions implementing the various embodiments of the present disclosure or a machine appropriate to store the programs. The program commands recorded in the computer-readable medium may be designed for the various embodiments or be known to those skilled in a field of computer software. 
     While the present disclosure has been shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope and spirit of the present disclosure as defined by the appended claims and their equivalents.