Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent
1998-05-05
2000-12-26
Hajec, Donald
Registers
Systems controlled by data bearing records
Credit or identification card systems
235375, 235450, G06K 500
Patent
active
06164532&
ABSTRACT:
The present invention provides a power transmission/communication system for transmitting power from a reader and/or writer to an IC card by an electromagnetic wave and performing transmission or transmission and reception of a communication signal between the reader and/or writer and the IC card by an electromagnetic wave, wherein the intensity of a magnetic field induced by the electromagnetic wave outputted from the reader and/or writer, i.e., the magnitude of power induced thereby and the time required to transmit the power are controlled.
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Hayashi Yoshihiko
Makuuchi Masami
Suga Takashi
Uesaka Kouichi
Yoshino Ryozo
Cyr Daniel St.
Hajec Donald
Hitachi , Ltd.
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