Patent ID: 8145689

Claim:
A folder storage device comprising a processor: the folder storage device further comprising; a folder storage unit arranged to store folders with hierarchy structures; a first folder hierarchy information generation unit arranged to generate first folder hierarchy information including related path information and hierarchical location information of each of the folders stored in the folder storage unit; a second folder hierarchy information generation unit arranged to generate second hierarchy information which indicates the hierarchical location information but not the related path information of each of the folders based on the first folder hierarchy information; a display unit arranged to display the second folder hierarchy information, when a plurality of folders with the same name exists, information of each of the plurality of folders is not included respectively in the displayed second folder hierarchy information; and a folder update unit arranged to specify content of the folders stored in the folder storage system to be updated and to execute updates of the folders stored in the folder storage unit based on the first folder hierarchy information in response to a receipt of update instructions at a prescribed hierarchical location of the second folder hierarchy information; wherein the second hierarchy information of folders located at different hierarchical locations is displayed at the same time on the display; and the folder update unit is one of a folder addition unit and a folder deletion unit.