Reader andor writer apparatus, power feeding syst

专利名称：Reader and/or writer apparatus, power

feeding system, and communication system

发明人：Hayashi, Yoshihiko,Suga, Takashi,Uesaka,

Kouichi,Yoshino, Ryouzou,Igarashi, Keisuke

申请号：EP98111200.6申请日：19980618公开号：EP0886232B1公开日：20070905

摘要：A reader and/or writer apparatus, a power feeding system and a power feedingand communication transmission and/or reception system in a proximate wireless cardsystem arranged so that power which satisfies the requirement of the Radio Law (500 muV/m at a distance of 3 m from the reader and/or writer apparatus) regarding the radiatedelectric field is supplied sufficiently from the reader and/or writer apparatus to theproximate wireless card (IC card). The reader and/or writer apparatus (1) has a spirallyshaped or coil-shaped antenna (101b) for generating electromagnetic fields both tosupply operational power to an IC card (2) and to perform transmission and/or receptionof signals for communication to and/or from the IC card (2) and a conductor member(101c) for forming a mirror image of the antenna on its back side.

申请人：HITACHI LTD,HITACHI INT ELECTRIC INC

地址：JP,JP

国籍：JP,JP

代理机构：Altenburg, Udo

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