Selectable data readout IC card
Assignee501 Toppan Moore Company, Ltd.
InventorHiroshi Watanabe
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Abstract
An IC card has at least a CPU and a memory unit having a plurality of storage areas allocated therein and can write or read information. The IC card includes an indication unit which indicates if the information written in the storage area is the information to be subjected to an updated information readout for reading only the latest information or the information to be subjected to a history information readout for reading the information written in the storage area, sequentially in a predetermined order. In accordance with an indication by the indication unit, a selective readout of the information in the storage area is possible between the updated information readout and the history information readout.
Claims11
An IC card containing an electronic circuit including at least a CPU and memory means in which a plurality of storage areas are allocated, wherein information can be written sequentially in said memory means and said information can be read from said memory means, comprising:
- means for receiving an external indicator at the IC card;
- means for generating a signal at the IC card in response to the external indicator;
- means for selectively indicating in response to said signal that information recorded in a plurality of storage areas of the memory means is either updated information or history information;
- means for reading updated information, including only information recently stored in said storage areas, when said indicating means indicates that the information written in said storage areas is updated information;
- and
- means for reading history information, including the information stored in said storage areas, in a predetermined sequential order when said indicating means indicates that the information written in said storage areas is history information.
Dependencies are inferred from the claim text.