Patent ID: 7891544

Claim:
A data communications system configured to execute data communication between three parties of a reader/writer, an integrated circuit card wirelessly communicable with said reader/writer in a non-contact manner, and an information processing terminal connected to said integrated circuit card via a wired interface, said data communications system comprising: said reader/writer having a read/write wireless control block configured to output a signal carrier and control wireless communication with said integrated circuit card; said integrated circuit card having an integrated circuit card wireless control block configured to start and control wireless communication with said reader/writer in accordance with detection of said signal carrier outputted from said read/write wireless control block; and said information processing terminal having a request acceptance block configured to accept a data transfer request from a user, a data storage block configured to store data, and a data transmission block, connected to said integrated circuit card wireless control block via a wired interface, configured to transmit a data transfer request signal and data in said data storage block to said integrated circuit card wireless control block in response to a data transfer request from said request acceptance block; wherein, upon reception of a data transfer request signal and data from said data transmission block, said integrated circuit card wireless control block switches a communication mode of said integrated circuit card wireless control block to a continuous communication mode in which data can be continuously transmitted or received and transmits said data transfer request signal and said data to said read/write wireless control block without waiting for a command from said read/write wireless control block; and said read/write wireless control block switches said communication mode to said continuous communication mode by use of said data transfer request signal from said integrated circuit card wireless control block as a trigger and receives said data from said integrated circuit card wireless control block.