Ex Parte SHOJI et al - Page 2



          Appeal No. 2002-1674                                                        
          Application 09/089,901                                                      


               The claimed invention relates to an apparatus and method for           
          recording on or reproducing information from an optical disk in             
          which groove-shaped groove tracks and land tracks present between           
          the groove tracks are alternately connected to each other in a              
          spiral shape.  More particularly, a signal is recorded in both at           
          least one continuous groove track and at least one continuous               
          land track and, thereafter, the signal is reproduced from both              
          the groove track and land track.  Control parameters are                    
          determined based on a detected quality of the recorded and                  
          reproduced signal.  Appellants assert (specification, pages 29              
          and 30) a savings in time and number of disk rotations over the             
          conventional approach in which optimal control settings are                 
          obtained separately for the land and groove tracks.                         
               Claim 1 is illustrative of the invention and reads as                  
          follows:                                                                    
               1.  An optional disk apparatus performing either one of                
          recording and reproduction of an optical disk in which groove-              
          shaped groove tracks and land tracks present between the groove             
          tracks are alternately connected to each other in a spiral shape,           
          comprising:                                                                 
               a recording and reproduction unit for recording a signal in            
          both at least one continuous groove track and at least one con-             
          tinuous land track, and after recording the signal in both the              


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