Ex parte MACIAS-GARZA et al. - Page 6




          Appeal No. 1997-2399                                                        
          Application No. 08/355,104                                                  


               Claims 14 and 25 stand rejected under 35 U.S.C.  103 as               
          being unpatentable over Kimura in view of Cutts.                            
               Claims 27 and 28 stand rejected under 35 U.S.C.  103 as               
          being unpatentable over Kimura in view of Best.                             
               Reference is made to the brief and the answer for the                  
          respective positions of the appellants and the examiner.                    
                                       OPINION                                        
               The obviousness rejections of claims 1 through 28 is                   
          reversed.                                                                   
               Kimura discloses a microprocessor system (Figure 1) that               
          uses a functionally redundant mode (FRM) to check for errors                
          in the operation of two microprocessors.  One of the                        
          microprocessors operates in a normal mode to drive the buses                
          to output an address, fetch instructions via the bus, execute               
          the fetched instructions, and drive the buses to read or write              
          operand data (column 1, lines 23 through 27).  In FRM, the                  
          other microprocessor operates in synchronism with the normal                
          mode microprocessor, but does not drive the buses (column 1,                
          lines                                                                       
          27 through 30).  The FRM microprocessor simultaneously fetches              
          the same instruction and operand data fetched by the normal                 
                                          6                                           





Page:  Previous  1  2  3  4  5  6  7  8  9  10  11  Next 

Last modified: November 3, 2007