Patent ID: 6594727
Filing Date: 2003-07-15
Classification: G06F,G06K

Abstract:
An entertainment system comprising a portable storage device; and an information processing unit to which said portable storage device is detachably connected, wherein:said portable storage device includes a first storage unit whose storage contents are held when said portable storage device is disconnected from said information processing unit; and a second storage unit whose storage contents are not held when said portable storage device is disconnected from said information processing unit, said first storage unit has a plurality of storage regions, and holds storage unit information containing storage contents identification information to show what kind of information is held in each of said storage regions, and information related to an address where information specified by said storage contents identification information is stored, said information processing unit includes means for writing information to said second storage unit indicating that said information processing unit and said portable storage device are connected;means for referring to said second storage unit and determining whether referred information coincides with said information written by said means for writing; and means for reading said storage unit information when said determination by said means for referring does not indicate a coincidence.