Portable electronic apparatus and method of controlling a portable electronic apparatus

摘要

According to one embodiment, a portable electronic apparatus executing performing process based on command input from an external apparatus, and storing a plurality of TLV data objects, the apparatus includes, a storage unit configured to store the data class and data character of each TLV data object, respectively in two storage areas spaced apart from each other, and to store addresses of a fixed length, representing the positions of the data characters, in association with the each data classes.

主权项

1. An IC Card executing a process based on command input from an external apparatus, and storing a plurality of Tag, Length, Value (TLV) data objects, the IC card comprising:
a storage unit configured to have a first storage area that stores an unfixed-length data character of each TLV data object, and to have a second storage area that stores a fixed-length data class of each TLV data object in association with a fixed-length address representing positions of the data characters; a transmission/reception unit configured to transmit and receive data to and from the external apparatus; and a control unit configured to:
retrieve the data class from the second storage area, the data class being identical to designation data contained in a read command for reading a TLV data object, if the read command is received by the transmission/reception unit, andread the data character stored in the first storage area based on the address in association with the data class retrieved, wherein the storage unit is configured to store in the first storage area an unfixed-length data length representing the length of the data character stored in the first storage area, in association with the data character stored in the first storage area.