Ex parte FREEMAN et al. - Page 5




          Appeal No. 1995-3501                                       Page 5           
          Application No. 07/927,788                                                  


                         If a file directory group runs out of                        
                    space to store any more file directory                            
                    entries for its path, a new file directory                        
                    group is allocated.  The last block of the                        
                    old file directory group points to the                            
                    first block of the new file directory                             
                    group, and vice versa.  This doubly linked                        
                    chain permits searching the file directory                        
                    groups having a common path either                                
                    backwards or forwards.  This technique also                       
                    allows for an unlimited number of data                            
                    files per path on the WORM volume, subject                        
                    only to the physical space limitations of                         
                    the WORM volume. [Specification at page 6.]                       
          The specification discloses that the PVR table contains the                 
          address of the next file directory group and the address of                 
          the previous file directory group, if any, for the path to                  
          allow chaining of all file directory groups per path                        
          (Specification at pages 19 and 20).                                         
               The examiner is of the opinion that the Path Table of                  
          Miki disclosed in Figures 7D and 8C is a PVR table as recited               
          in claims 87 and 90.  In this regard the examiner is of the                 
          opinion that what Miki calls directory files i.e. AAA, BBB,                 
          CCCCC, and A to K are file directory groups.  However,                      
          directories AAA, BBB, CCCCC, and A to K do not comprise a path              
          name and a plurality of file directory blocks each of which                 
          contain a plurality of file directory entries (See Figures 7B               








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