Ex parte SHIGEYOSHI - Page 6




          Appeal No. 1997-1185                                                        
          Application No. 08/497,845                                                  

          Cir. 1983), cert. denied, 469 U.S. 851 (1984)).                             
                    The Examiner states that Hooper discloses a data                  
          processing system for analyzing timing in the synthesis of                  
          logic circuits and uses a multipath delay analysis based on                 
          worst delay path.  The Examiner reasons that Hooper is                      
          applicable to clock wiring design and analysis because both                 
          Hooper and Appellant’s invention are directed to signal                     
          propagation in a wiring net or media.  The Examiner notes that              
          Hooper discloses a latch circuit to meet timing performance                 
          but does not explicitly disclose inserting a delay gate as                  
          claimed.  The Examiner contends that such a feature is well                 
          known as shown by Hitchcock which uses timing analysis and                  
          timing adjustment to meet circuit performance.  This would                  
          motivate those skilled in the art to use                                    
          gate delay as a means to improve timing performance because                 
          the                                                                         


          gate delay would provide a delay time to meet clock                         
          synchronization.  (Answer-pages 3 and 4.)                                   
                    Appellant agrees that timing considerations are a                 



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