Ex parte YOON - Page 5




          Appeal No. 1997-2681                                                        
          Application No. 08/211,414                                                  

          modified the APA by replacing the single information data                   
          filter (14) with the plurality of information data filters                  
          (31-34) of Fischler to optimize data reproduction.                          
          Furthermore, the Examiner explains, Fischler’s filter                       
          selection could be predicated on the actual reproduced                      
          information data signal                                                     
          (i.e., picked up signal), since Abbott, in a similar system,                
          teaches filter adaptation based upon the actual information                 
          data signal.                                                                
               Appellant argues, “Appellant’s admitted prior art does                 
          not recognize different information data frequency bands in                 
          data picked up by a pickup means...[a]ccordingly, Appellant’s               
          admitted prior art does not teach or suggest selecting from                 
          among a plurality of filters based upon such recognition.”                  
          (reply brief-page 2).                                                       
               We disagree.  At page 2, lines 11-15, of Appellant’s                   
          specification describing the prior art it states:                           
               Currently, a zone bit recording mode is utilized                       
               to maximize the recording density of the                               
               information data, wherein the servo data has the                       
               same frequency throughout every zone on a disk,                        
               but the data on the region where the information                       
               data is recorded, is recorded and reproduced as                        
               frequencies having different bands for the                             
               respective zones.                                                      
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