Patent ID: 11946650
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC F  G  H | IPC F  G  H

Claim 17:
18. A method performed by a range hood that includes a main body including a bottom surface and a front surface, a first driver assembly disposed in the main body and including a first motor configured to rotate a first fan of the first driver assembly to cause air to move through an intake opening in a downward facing portion of the main body, a first camera disposed in the bottom surface of the main body and configured to capture a first image of an upper plate of a cook top that is positioned below the main body, a second camera disposed on the front surface of the main body and configured to capture a second image of an user, a second driver assembly disposed in the main body and including a second motor configured to rotate a second fan of the second driver assembly to cause air to move in an unenclosed free space in front of the first camera beneath the bottom surface of the main body, and a display disposed in the front surface of the main body, the method comprising:
capturing, through the first camera, the first image of the upper plate of the cook top;
displaying a graphical user interface (GUI) for viewing the first image;
displaying, through the display, the first image;
identifying whether smoke is generated on the cook top from the first image;
based on the smoke being identified from the first image, absorbing the smoke through the intake opening in the main body by controlling operation of the first motor that is configured to rotate the first fan to cause air to move through the intake opening in the downward facing portion of the main body;
identifying whether there is fogging of the first camera from the first image;
based on the fogging of the first camera being identified from the first image, mitigating the fogging of the first camera by controlling operation of the second motor that is configured to rotate the second fan to cause air to move in the unenclosed free space in front of the first camera beneath the bottom surface of the main body;
based on the fogging of the first camera not being identified from the first image while mitigating the fogging of the first camera, discontinuing the mitigating of the fogging of the first camera;
capturing the second image of the user through the second camera; and
transmitting the first image to an external device,
wherein an optical axis of the first camera is inclined counterclockwise by a setting degree with reference to a virtual line extended at right angles from the upper plate of the cook top,
wherein the setting degree is obtained based on a mathematical equation as below,, equation:, θ
   =
   
    
     tan
     
      -
      1
     
    
    [
    
     
      
       L
       ⁢
       2
      
       
      -
      
       (
       
        L
        ⁢
        
         4
         /
         2
        
       
       )
      
     
     H
    
    ]
   
  
  ,
 

wherein the θ is the setting degree,
wherein the H is a distance from the upper plate of the cook top to the bottom surface of the range hood,
wherein the L2 is a distance from a rear surface of the range hood to the first camera of the range hood, and
wherein the L4 is a distance from a rear surface of the cook top to a front surface of the cook top.