Ex parte HORTON et al. - Page 8





                 Appeal No. 97-2764                                                                                                                     
                 Application No. 08/354,018                                                                                                             


                          Krieg does not describe how an operator's position is                                                                         
                 calculated.  However, Krieg discloses in column 5, lines 42-                                                                           
                 56,                                                                                                                                    


                 that the details of how remote object positioning is                                                                                   
                 accomplished can be found in four additional patents, none of                                                                          
                 which uses averaging signal strengths to calculate the                                                                                 
                 operator's position.   Therefore, by incorporating the four2                                                                                                  

                 patents, Krieg suggests that the position of the object is                                                                             
                 determined by methods other than averaging.  Furthermore, as                                                                           
                 indicated by appellants (Brief, page 3), no prior art of                                                                               
                 record discloses a method of nor a means for averaging signal                                                                          
                 strengths to ascertain the position of an object.                                                                                      
                 Consequently, it is unclear to us how the examiner can                                                                                 
                 conclude that Krieg must be calculating components of the                                                                              


                          2Kuipers, in patent number 3,983,474, describes determining the                                                               
                 orientation of an object using coordinate transformation.  Raab discloses, in                                                          
                 columns 8 and 9 of patent number 4,054,881, that the x, y, and z coordinates                                                           
                 of the object can be calculated by measuring the signal strengths to determine                                                         
                 distances, creating a system of three equations with three unknowns relating                                                           
                 the power measurements, and solving the system of equations to obtain squared                                                          
                 normalized rectangular coordinates.  Kuipers discloses in patent number                                                                
                 4,298,874 an iterative computational method of determining the orientation of                                                          
                 an object.  Raab explains, starting at line 49 of column 31 of patent number                                                           
                 4,314,251, that the position of an object is calculated using squared                                                                  
                 magnitudes and dot products of the sensor output vectors.                                                                              
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