NON-CONTACT CARD READER HAVING DUAL COIL MAGNETIC FIELD GENERATOR

摘要

PURPOSE: A non-contact card reader is provided to improve region and distribution of a magnetic field by having a magnetic field generator of dual type of an external coil and an inner coil in a card reader. CONSTITUTION: In a card reader(10), a signal processor(11) stores a program actually used in a predetermined space, a radio frequency module(12) conducts a radio communication, and a power controller(15) is supplied with a driving power for a magnetic field generation from the exterior. A magnetic field generator(13) receives a driving voltage from the power controller(15) to generate magnetic field. The magnetic field generator(13) has a dual structure of an inner coil(A) and an external coil(B).