Patent ID: 11940526
Assignee: LG ELECTRONICS INC.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G

Claim 11:
12. The method according to claim 11, wherein a relation between the coordinates of (x1, x2) is represented as, x
    i
   
   =
   
    
     (
     
      
       
        
         x
         i
        
       
      
      
       
        
         y
         i
        
       
      
      
       
        
         z
         i
        
       
      
     
     )
    
    =
    
     (
     
      
       
        
         
          
           (
           
            
             z
             i
             
              (
              
               ℓ
               1
              
              )
             
            
            -
            
             z
             i
             
              (
              
               ℓ
               2
              
              )
             
            
           
           )
          
          +
          
           (
           
            
             
              x
              i
              
               (
               
                ℓ
                2
               
               )
              
             
             ⁢
             
              tan
              ⁡
              (
              
               θ
               
                (
                
                 ℓ
                 2
                
                )
               
              
              )
             
            
            -
            
             
              x
              i
              
               (
               
                ℓ
                1
               
               )
              
             
             ⁢
             
              tan
              ⁡
              (
              
               θ
               
                (
                
                 ℓ
                 1
                
                )
               
              
              )
             
            
           
           )
          
         
         
          
           θ
           
            (
            
             ℓ
             2
            
            )
           
          
          -
          
           θ
           
            (
            
             ℓ
             1
            
            )
           
          
         
        
       
      
      
       
        
         
          y
          i
          
           (
           
            ℓ
            1
           
           )
          
         
         ⁢
            
         or
         ⁢
            
         
          y
          i
          
           (
           
            ℓ
            2
           
           )
          
         
        
       
      
      
       
        
         
          z
          i
          
           (
           
            ℓ
            1
           
           )
          
         
         +
         
          tan
          ⁢
          
           θ
           
            (
            
             ℓ
             1
            
            )
           
          
          ⁢
          
           (
           
            
             x
             i
            
            -
            
             x
             i
             
              (
              
               ℓ
               1
              
              )
             
            
           
           )
          
         
        
       
      
     
     )
    
   
  
  ,
 

 
  
   i
   =
   1
  
  ,
  2
  ,, wherein θ(l) denote the directed angle from the x-axis to the virtual line between (x1(l) and x1) or (x2(l) and x2).