Patent ID: 7163154

Claim:
A contactless electronic IC card, comprising: a communication device for communicating with a contactless electronic IC card reader in accordance with the ISO 14443-4 standard; a contact type electronic IC card operating system communicating by APDU (Application Protocol Data Unit) command and response in accordance with the ISO 7816-4 standard; and a protocol conversion interface between the communication device and the operating system, the protocol conversion being made on octets forming the protocol so that the communication device can send APDU responses and receive APDU commands in accordance with the ISO 14443-4 standard wherein the APDU command and the APDU response in accordance with the ISO 7814-4 standard are sent between the communication device and the contactless electronic IC card reader in accordance with an I-Block command format of the ISO 14443-4 standard, the APDU command or APDU response constituting a data zone (INF) of the I-Block command.