PORTABLE STORAGE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a content display type portable storage medium for storing and retrieving a document.

SOLUTION: A portable storage medium document card is a portable unit having: a nonvolatile storage means for storing information in a digital form; a control processor for processing a function and a request started by a user and for accessing a document stored inside; an input/output port used as an interface with an external device for reading and writing digital information; and a user interface 601 allowing the user to directly interact with the document card. The user interface includes: a plurality of traversal keys 606-609 for allowing the user to traverse lists of functions and documents; a selection key 610 for allowing the user to select a highlight function or a document; a processing means for processing the function generated by the user; and a display 603 for displaying the lists of functions and documents and information in response to the function generated by the user.

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