NONCONTACT TYPE IC CARD INFORMATION PROCESSING SYSTEM,申请号JP19900280030-传众专利搜索

NONCONTACT TYPE IC CARD INFORMATION PROCESSING SYSTEM

申请公布号：JPH04153896(A)

申请号：JP19900280030

申请日期：1990.10.18

申请公布日期：1992.05.27

申请人：

HITACHI MAXELL LTD;ENU TEI TEI DEETA TSUUSHIN KK

发明人：KATAYAMA YOSUKE;KOSEKI KIMITAKA;TAKEUCHI TAKASHI;IEGI TOSHIATSU

分类号：B42D15/10;G06K17/00;G06K19/07;H02J17/00

主分类号：B42D15/10

摘要：<p>PURPOSE:To realize compact configuration, good transmission efficiency, and superior reliability by making the diameter of the core of an external device smaller than the diameter of the core in an IC card. CONSTITUTION:The magnetic induction part composed of the thin core 2 which has a diameter phi2 and high magnetic permeability and a coil 4 wound around the core 2 is arranged at the center part of the IC card 5. When the IC card 5 is mounted on the external device, the core 2 of the IC card 2 is inserted into the gap part of the core 1 of the external device and the core 2 and core 1 are arranged in opposition relation. At this time, the diameter phi1 of the core 1 is set smaller than the diameter phi2 of the core 2. Consequently, magnetic coupling which has high efficiency and small leak magnetic flux is realized and the reliability of noncontact transmission and reception of information is improved.</p>