Patent ID: 7213028
Filing Date: 2007-05-01
Classification: G11B,Y10S

Abstract:
1. A recording apparatus for recording desired files on a recording medium, the recording apparatus comprising: index file production means for producing an index file of the flies recorded on the recording medium from extract information of the files and a folder; said index file production means being operable to classify the extract information for individual types of the extract information into groups including a group of property to which property information of the files is allocated and a different group different from the group of property, to allocate, in the different group of the extract information, the extract information of one of the files or the folder to one or a plurality of slots of a fixed length, and to allocate, in the group of property, the extract information of the one file or the folder to one or a plurality of slots of the fixed length so that said group of property has at least slots corresponding to the slots of the different group to produce the index file; said index file production means setting, in the slots of the group of property, management information for managing the groups; said index file production means setting, in the management information of each of the slots of the group of property, valid/invalid information representative of whether the slot is valid or invalid, an extension slot number pointing to an extension slot succeeding the slot, presence/absence information representative of whether a corresponding slot of the different group to which the extract information of the file relating to the slot is allocated is present or absent, a slot number pointing to the corresponding slot of the different group, and extension information representative of whether or not the corresponding slot of the different group is an extension slot; a combination of the slots to which the extract information of the one file or the folder is allocated with the extension slot number, presence/absence information, slot number, and extension information being indicated by the group of property.