IP Library › Granted Patent US 6,840,443
Granted Patent B2
US 6,840,443 · App. 10/794,333 · Granted Jan 11, 2005

Dual purpose portable card, a communication system, a communication method, a terminal apparatus, and a computer-readable record medium recording a program

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Quick Facts
Patent No.
US 6,840,443
App. No.
10/794,333
Granted
Jan 11, 2005
Kind
B2
Abstract

An IC card 1 having an integrated device includes a nonvolatile memory 12 and an encryption circuit 10 . The nonvolatile memory 12 after the IC card 1 is placed in a radio wave zone to receive a power supply from a terminal apparatus through a radio wave. The encryption circuit 10 coordinates with a first terminal apparatus to perform a mutual authentication. The integrated device includes a nonvolatile memory 13 and an encryption circuit 11 . The nonvolatile memory 13 is accessed after the IC card 1 is placed at a location close to an antenna in the first terminal apparatus and only after the IC card 1 receives a higher-level power supply from the antenna. The encryption circuit 11 coordinates with the terminal apparatus to perform a mutual authentication. Personal information that requires high security is stored in the nonvolatile memory 13 and the encryption circuit 11 performs a mutual authentication whenever the nonvolatile memory 13 is accessed.

Claims (15)

1. A terminal apparatus which inputs or outputs data to/from a portable card, wherein

the portable card contains an integrated device set to either a first mode or a second mode, wherein in the first mode, a predetermined process is performed and in the second mode, a process that requires higher security than the first mode is performed,

the terminal apparatus includes

a first communicating unit operable to, when a distance between the portable card and the terminal apparatus is in a range of a second distance to a third distance, set the integrated device to the first mode and then input or output data to/from the integrated device by transmitting or receiving a radio wave to/from the integrated device without contacting the integrated device, and

a second communicating unit operable to, when the portable card is a first distance or shorter away from the terminal apparatus, set the integrated device to the second mode and then input or output data to/from the integrated device by transmitting or receiving a radio wave to/from the integrated device without contacting the integrated device.

2. A computer-readable record medium recording a program that allows a computer to input or output data to/from a portable card, wherein

the portable card contains an integrated device set to either a first mode or a second mode, wherein in the first mode, a predetermined process is performed and in the second mode, a process that requires higher security than the first mode is performed, and

the program allows the computer to perform

a first communicating step for, when a distance between the portable card and the computer is in a range of a second distance to a third distance, setting the integrated device to the first mode and then allowing the computer to input or output data to/from the integrated device by allowing the computer to transmit or receive a radio wave to/from the integrated device without contacting the integrated device, and

a second communicating step for, when the portable card is a first distance or shorter away from the computer, setting the integrated device to the second mode and then allowing the computer to input or output data to/from the integrated device by allowing the computer to transmit or receive a radio wave to/from the integrated device without contacting the integrated device.

3. A computer-readable record medium recording a program that allows a computer to input or output data to/from a portable card, wherein

the portable card contains an integrated device set to either a first mode or a second mode, wherein in the first mode, a predetermined process is performed and in the second mode, a process that requires higher security than the first mode is performed, and

the program allows the computer to perform

a first communicating step for, when a distance between the portable card and the computer is in a range of a second distance, setting the integrated device to the first mode and then allowing the computer to input our output data to/from the integrated device by allowing the computer to transmit or receive a radio wave to/from the integrated device without contacting the integrated device, and

a second communicating step for, when the portable card is a first distance or shorter away from the computer, setting the integrated device to the second mode and then allowing the computer to input or output data to/from the integrated device by allowing the computer to transmit or receive a radio wave to/from the integrated device without contacting the integrated device.