| US 7,487,175 B2 | ||
| Recording apparatus, file management method, program for file management method, and recording medium having program for file management method recorded thereon | ||
| Haruo Yoshida, Kanagawa (Japan); Masaharu Murakami, Tokyo (Japan); Hiroshi Jinno, Tokyo (Japan); Mitsuhiro Hirabayashi, Tokyo (Japan); and Makoto Yamada, Tokyo (Japan) | ||
| Assigned to Sony Corporation, Tokyo (Japan) | ||
| Filed on Aug. 29, 2006, as Appl. No. 11/511,547. | ||
| Application 11/511547 is a division of application No. 10/786849, filed on Feb. 25, 2004, granted, now 7,213,028. | ||
| Prior Publication US 2006/0294135 A1, Dec. 28, 2006 | ||
| Int. Cl. G06F 17/00 (2006.01) | ||
| U.S. Cl. 707—102 [707/3; 707/101; 707/104.1] | 3 Claims |
| 1. A file management method for managing a plurality of files stored in a predetermined region, comprising the steps of:
classifying extract information of the files and a folder 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;
allocating, 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
allocating, 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 slots at least corresponding to the slots of the different group to
produce an index file;
the slots of the group of property having set therein management information for managing the groups being set;
the management information of each of the slots of the group of property having set therein 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.
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