Ex parte CRANE et al. - Page 3




          Appeal No. 96-2994                                                           
          Application 08/282,413                                                       


          new relative positions of said first object and said second                  
          object as a result of the relative movement of said first                    
          object and said second object to movement of a viewer within                 
          said virtual reality environment by selectively obscuring said               
          first object and said second object according to the relative                
          position of said first                                                       

          object and said second object in said virtual reality                        
          environment to an observation point of said viewer in said                   
          virtual reality environment.                                                 

          The examiner relies on the following references:                             
          Corthout et al. (Corthout)      4,631,690        Dec. 23, 1986               
          Bentley, “Multidimensional Binary Search Trees Used for                      
          Associative Searching,” Communications of the ACM, Volume 18,                
          Number 9, Sept. 1975, pages 509-517.                                         
          Fuchs et al. (Fuchs), “Near Real-Time Shaded Display of Rigid                
          Objects,” Computer Graphics, Volume 17, Number 3, July 1983,                 
          pages 65-72.                                                                 
          Claims 1-26 stand rejected under 35 U.S.C. § 103.  As                        
          evidence of obviousness the examiner offers Corthout in view                 
          of Bentley or Fuchs.                                                         
          Rather than repeat the arguments of appellants or the                        
          examiner, we make reference to the briefs and the answer for                 
          the respective details thereof.                                              
          OPINION                                                                      
          We have carefully considered the subject matter on                           

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