Non-contact IC card and method of initializing same

A non-contact IC card comprising:

• power-supply receiving means for receiving power through electromagnetic coupling with a terminal unit;
• signal transmitting/receiving means for transmitting signals to and receiving signals from the terminal unit;
• signal processing means, connected to the power-supply receiving means and the signal transmitting/receiving means, for processing signals;
• and
• resetting means, connected to the signal processing means, for resetting the signal processing means when the power-supply receiving means begins receiving power from the terminal unit.

A non-contact IC card comprising:

• power-supply receiving means for receiving power through electromagnetic coupling with a terminal unit;
• signal transmitting/receiving means for transmitting signals to and receiving signals from the terminal unit;
• signal processing means, connected to the power-supply receiving means and the signal transmitting/receiving means, for processing signals;
• and
• resetting means, connected to the signal processing means, for resetting the signal processing means and comprising a re-trigger circuit receiving a trigger signal from the signal transmitting/receiving means when a signal is transmitted by and when a signal is received by the IC card, the re-trigger circuit for outputting a reset signal to the signal processing means when no trigger signal is received during a predetermined time period after a trigger signal is received from at least one of the signal transmitting/receiving means and the signal processing means.

A non-contact IC card comprising:

• power-supply receiving means for receiving power through electromagnetic coupling with a terminal unit;
• signal transmitting/receiving means for transmitting signals to and receiving signals from the terminal unit;
• signal processing means, connected to the power-supply receiving means and the signal transmitting/receiving means, for processing signals;
• and
• resetting means, connected to the signal processing means, for measuring time following the most recent of transmission of a signal to and reception of a signal from the terminal unit and resetting the signal processing means after a lapse of a predetermined time period without transmission of a signal to the terminal unit.