Ex parte MUIRHEAD - Page 8

          Appeal No. 96-0750                                                          
          Application 07/944,561                                                      

          the rejection of claim 1 nor responds to any of appellants’                 
          arguments regarding this limitation.                                        
          The pulse signal in Rhodes has a very different form                        
          than the RF signal in the invention.  The RF signal of the                  
          invention reaches a maximum value and stays there as shown in               
          appellants’ FIG. 3.  The delay in appellants’ invention is                  
          maintained long enough to ensure that the undelayed signal                  
          will have reached its maximum value for comparison.  The                    
          signals in Rhodes are repetitive as shown in FIGS. 1 and 2.                 
          Rhodes is only interested in detecting the presence of a                    
          signal by computing the initial slope of the signal.                        
          According to appellants, the delay in Rhodes cannot be long                 
          enough to permit the undelayed signal to reach its maximum                  
          value before the subtraction takes place.  The slope in Rhodes              
          must be determined before the signal begins to decrease in                  
          value, that is, before the maximum value is reached.                        
          According to appellants, the system of Rhodes would not                     
          operate if the delay allowed the incoming signal to reach its               
          maximum value and start decreasing again.  We agree.                        
          Every argument appellants make with respect to the                          
          differences in the delay and the maximum value of the                       

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