Ex parte GUNTHER et al. - Page 6




          Appeal No. 97-0280                                                          
          Application 08/192,839                                                      


          and the majority voting circuit will select the output                      
          corresponding to these two outputs for transmission to the output           
          terminal 8.  In column 2, line 61, through column 4, line 7,                
          Steven discloses an isolating circuit 20 that detects a processor           
          which is producing erroneous outputs at a rate above a first                
          predetermined level and then produces an alarm signal or isolates           
          the processor from the processing arrangement.  Therefore,                  
          Stevens provides a simple method of isolating the source of                 
          errors.                                                                     
               On the other hand, Dooley teaches a highly complex signature           
          detecting system for isolating source of correctable errors in a            
          computer system.  In column 1, lines 57-62, Dooley teaches that             
          their invention is concerned with maintenance of a computer                 
          system constructed of a large number of field replaceable units.            
          Examples of these field replaceable units are edge-connected                
          circuit boards, quick-disconnect cables, rack-mounted replacement           
          boxes and other easily-replaceable components.  Dooley teaches in           
          column 5, lines 15-20, that the system provides a signature                 
          collection and analysis method which helps field engineers to               
          make more intelligent decisions regarding which field replaceable           
          units is most likely to be responsible for causing an unusual               
          high number of self-correctable errors.  We note that Dooley is             

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