IC CARD AND CARD READER - YOSHIOKA KAZUEI

Title:

IC CARD AND CARD READER

Document Type and Number:

WIPO Patent Application WO/2003/077195

Kind Code:

A1

Abstract:

An IC card (2) receives a high−frequency signal (SC1) transmitted from a card reader (1) through an antenna unit (21) provided on an IC card body (CB), rectifies the high−frequency signal (SC1), thereby generates an operating voltage, and demodulates a modulated signal superimposed on the high−frequency signal (SC1) so as to communicate with the card reader (1). The antenna unit (21) is composed of a pair of electrostatic coupling antennas spaced from each other. The paired electrostatic antennas comprise metallic thin films (21a, 21b) provided on the front of the IC card body (CB) separately from each other and metallic thin films (21c, 21d) provided on the back of the IC card body (CB) separately from each other. The metallic thin films (21a, 21c) are opposed to each other and connected to each other, thus forming one of the paired electrostatic coupling antennas. The metallic thin films (21b, 21d) are opposed to each other and connected to each other, thus forming the other electrostatic coupling antenna.

Inventors:

YOSHIOKA KAZUEI (JP)

Application Number:

PCT/JP2002/002263

Publication Date:

September 18, 2003

Filing Date:

March 11, 2002

Export Citation:

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Assignee:

YOSHIOKA KAZUEI (JP)

International Classes:

B42D15/10; G06K7/08; G06K17/00; G06K19/07; G06K19/077; H01Q1/22; H01Q1/38; H01Q1/40; H01Q9/04; H01Q23/00; H04L29/06; H04M7/00; (IPC1-7): G06K19/077; G06K19/07; G06K17/00; B42D15/10; H01Q1/38

Domestic Patent References:

WO1987006754A1

1987-11-05

Foreign References:

JPH06150079A	1994-05-31
JPH06187514A	1994-07-08

Other References: