Contactless IC card
First Claim
1. A contactless integrated circuit (IC) card that can execute a plurality of application programs, comprising:
- a plurality of antenna coils, each generating an electromotive force by receiving electromagnetic waves from a reader/writer;
an electromotive force measuring unit operable to measure the electromotive force generated by each of the antenna coils when the contactless IC card is passed over the reader/writer;
an electromotive force comparing unit operable to compare characteristics of the electromotive forces which are measured by the electromotive force measuring unit; and
an application selecting/executing unit operable to select one application program based on the comparison made by the electromotive force comparing unit, and execute the selected application program.
2 Assignments
0 Petitions
Accused Products
Abstract
A contactless integrated circuit (IC) card (11) is comprised of the following: a first antenna coil (102) and a second antenna coil (103) for generating an electromotive force by receiving electromagnetic waves from a reader/writer; a first electromotive force measuring unit (311) and a second electromotive force measuring unit (312) for respectively measuring the electromotive force generated by each of the antenna coils; an electromotive force comparing unit (313) for comparing the characteristics of the electromotive forces which are respectively generated by the respective antenna coils and then measured; and an application selecting/executing unit (215) for selecting one application from a program storing unit (216) based on the comparison made by the electromotive force comparing unit (313) and executing the selected application.
11 Citations
15 Claims
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1. A contactless integrated circuit (IC) card that can execute a plurality of application programs, comprising:
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a plurality of antenna coils, each generating an electromotive force by receiving electromagnetic waves from a reader/writer; an electromotive force measuring unit operable to measure the electromotive force generated by each of the antenna coils when the contactless IC card is passed over the reader/writer; an electromotive force comparing unit operable to compare characteristics of the electromotive forces which are measured by the electromotive force measuring unit; and an application selecting/executing unit operable to select one application program based on the comparison made by the electromotive force comparing unit, and execute the selected application program. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An application selection method for a contactless integrated circuit (IC) card that can execute a plurality of application programs,
wherein the contactless IC card has a plurality of antenna coils, each generating an electromotive force by receiving electromagnetic waves from a reader/writer, and the method comprises: -
measuring the electromotive force generated by each of the antenna coils; comparing characteristics of the measured electromotive forces; and selecting one application program based on the comparison and executing the selected application program.
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14. A computer-readable storage medium having stored thereon a program for a contactless integrated circuit (IC) card that can execute a plurality of application programs,
wherein the contactless IC card has a plurality of antenna coils, each generating an electromotive force by receiving electromagnetic waves from a reader/writer, and the program causes a computer to execute the steps of: -
measuring the electromotive force generated by each of the antenna coils; comparing characteristics of the measured electromotive forces; and selecting one application program based on the comparison and executing the selected application program.
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15. An integrated circuit for controlling a contactless integrated circuit (IC) card that can execute a plurality of application programs,
wherein the contactless IC card has a plurality of antenna coils, each generating an electromotive force by receiving electromagnetic waves from a reader/writer, and the integrated circuit comprises: -
an electromotive force measuring unit operable to measure the electromotive force generated by each of the antenna coils; an electromotive force comparing unit operable to compare characteristics of the electromotive forces which are measured by the electromotive force measuring unit; and an application selecting/executing unit operable to select one application program based on the comparison made by the electromotive force comparing unit, and execute the selected application program.
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Specification