Patent ID: 7437526

Claim:
A method of information processing comprising: receiving a command from a provider apparatus; processing the command by utilizing a memory section that allocates to a first area and a second area, the first area including a plurality of area definition blocks each of which stores (i) information relating to a predetermined area in the second area which is used by one or more provider apparatuses and (ii) access right data for one of the plurality of provider apparatuses associated with the area definition block which defines access rights to the predetermined area, wherein the area definition blocks define the information and the access rights data so that the predetermined area of the second area associated with the provider apparatus can be accessed by another provider apparatus, the second area being based on subtracting the first area from the memory section and the first area being based on the number of provider apparatuses, the second area including a plurality of user blocks managed in a block unit having a predetermined size, wherein each of the plurality of area definition blocks has the predetermined size, the block unit being used by a plurality of provider apparatuses, wherein processing the command includes accessing one of the plurality of area definition blocks associated with the provider apparatus; and transmitting results of said processing, wherein the second area includes a purse block, the purse block being reserved for storing data that is subtracted and added and has a plurality of access levels associated with the plurality of provider apparatuses.