Card-shaped memory device incorporating IC card function, adapter for the same and host device

A host device comprising:

• a non-contact communication antenna;
• a power supply circuit configured to generate power;
• an connection portion configured to connect the antenna and a card-shaped memory device with each other, the card-shaped memory device including a chip having a wireless communication-function and an IC card function,
• the card-shaped memory device including:
• a power generating circuit configured to generate power based on a signal from the antenna;
• and
• a switching circuit configured to effect switching between supplying of the power from the power generating circuit and supplying of the power from the power supply circuit;
• and
• a host control section configured to issue a command for controlling the switching circuit.

A host device comprising:

• a non-contact communication antenna;
• a power supply circuit configured to generate power;
• a connection portion configured to connect the antenna and a card-shaped memory device with each other, the card-shaped memory device including a chip having a wireless communication function and an IC card function,
• the card-shaped memory device including:
• a power generating circuit configured to generate power based on,a signal from the antenna;
• and
• a switching circuit configured to effect switching between supplying of the power from the power generating circuit and supplying of the power from the power supply circuit;
• and
• power control means which shuts down the power generated by the power supply circuit, when causing the card-shaped memory device to operate by using the power from the power generating circuit.

An adapter comprising:

• a card-shaped main body;
• a non-contact communication antenna provided in the main body;
• and
• a connector which is connected to the antenna, and allows a card-shaped memory device to be connected to the connector, the card-shaped memory device being allowed to perform non-contact communication.