Ex parte OGAWA et al. - Page 11




          Appeal No. 1999-0264                                                        
          Application No. 08/573,582                                                  


          stored on the disk to indicate write permission or inhibition               
          (column 3, line 66 to column 4, line 24).  Like Nakajima,                   
          Saldanha does not teach a microprocessor as part of the disk                
          storage device, interposed between a host computer and the                  
          storage medium.                                                             
               We further agree with the Examiner that Kobayashi teaches              
          a microprocessor that informs a higher rank device of a write               
          inhibition error (column 8, lines 25-62).  The microprocessor               
          of Kobayashi determines whether the recording mode specified                
          by the higher rank device is "update write" or "initial                     
          write."  If initial write is requested and information has                  
          previously been recorded in the data field, the microprocessor              
          does not write the data, and informs the higher rank device                 
          that the data field has been written to.                                    
               We disagree with the Examiner that the person having                   
          ordinary skill in the art would have been motivated to combine              
          Nakajima, Saldanha, Kobayashi, (Director, and Purvis) to                    
          achieve the claimed invention.  The Examiner cites column 4,                
          lines 63-68 of Saldanha as motivation for the combination.                  
          Here, Saldanha suggests the advantage of "distinguish[ing]                  
          between erased and written sectors on standard MO media," a                 
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