To recover a non-registered area in additional registration processing by the same procedure as for additional registration processing.
An IC card 32 has a memory for storing a first area formed into hierarchy structure, performs area generation processing for generating a second area in a lower layer of the area according to an instructional command transmitted from a communication device for instructing the generation of the second area in the lower layer of the area, and when the area generation processing is interrupted, transmits first information indicating whether the second area is already generated according to a request from the communication device. Then, when the instructional command transmitted from the communication device is received according to the transmission of information as the first information indicating that the second area is not yet generated, the IC card 32 performs the same area generation processing again irrespective of the interrupted state of the area generation processing, The present invention can be applied, for instance, to an IC card for performing communication with a reader/writer.
MORITA SUNAO
NAKAMURA MITSUHIRO
Takashi Nishikawa
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