IC CARD AND MEMORY CONTROL METHOD IN IC CARD

摘要

PROBLEM TO BE SOLVED: To provide an IC card and memory control method in the IC card that efficiently use a capacitance of an electrically rewritable non-volatile memory such as a flash memory and the like in the IC card.;SOLUTION: An Ic card according to the present invention has an electrically rewritable non-volatile memory in which a memory area is set in any of a rewritable area enabling data to be rewritten and a non-rewritable area disabling the data to be rewritten, and is the IC card, in which an operating system (thereafter, abbreviated as an OS), a first application operative under the operating system (thereafter, abbreviated as an AP), and first AP data are preliminarily written in the non-rewritable area, comprises a status change unit that is operative under the OS, and changes the memory area of the flash memory to the rewritable area or non-rewritable area. When the OS initially boots, after the OS duplicates the first AP data in a writable area enabling writing, the status change unit is configured to change a non-writable area of a duplication source of the first AP to the writable area.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT