Ex Parte Riesenman et al - Page 3




              Appeal No. 2005-0627                                                                          3               
              Application No. 09/749,432                                                                                    


                     Reference is made to the briefs (paper numbers 13 and 15) and the answer (paper                        
              number 14) for the respective positions of the appellants and the examiner.                                   
                                                          OPINION                                                           
                     We have carefully considered the entire record before us, and we will sustain the                      
              anticipation rejection of claims 1 through 30.                                                                
                     Appellants argue (brief, pages 10 through 12 and 15 through 17; reply brief, page 5)                   
              that Batchelor fails to teach flushing data fetched for a first device from the buffer prior to               
              storing data for another device in the same buffer.                                                           
                     We disagree.  Batchelor teaches (column 3, lines 56 through 64) that:                                  
                     In current PCI [Peripheral Component Interconnect] art, if a read is                                   
                     disconnected and another agent issues an intervening read request, then                                
                     any prefetched data maintained in the PCI buffer for the disconnected agent                            
                     is discarded.  Thus, when the read disconnected agent retries the read                                 
                     request, the PCI bridge will have to again prefetch the data because any                               
                     prefetched data that was not previously returned to the agent prior to the                             
                     disconnect would have been discarded as a result of the intervening read                               
                     request from another agent.  (Emphasis added).                                                         
              In view of the teaching in Batchelor of flushing/discarding the data for a first agent/device                 
              from a shared buffer before inputting the data for a second agent/device, we will sustain                     
              the anticipation rejection of claims 1 through 30.                                                            
                                                         DECISION                                                           
                     The decision of the examiner rejecting claims 1 through 30 under 35 U.S.C.                             
              § 102(b) is affirmed.                                                                                         








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