Files and folders in the form of hierarchy can be confirmed visually easily to enhance the operability of search or content confirmation. An artist reading group 101, an album reading group 102, and a content (each music within an album) reading group 103 are displayed on a display screen. The groups...http://www.google.com/patents/US6880132?utm_source=gb-gplus-sharePatent US6880132 - Method and apparatus for arranging and displaying files or folders in a three-dimensional body
