Disturbing magnetic field generator and card reader
AssigneeNidec Sankyo Corporation
InventorHirotaka SAKAMAKI
Life of this patent
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Abstract
Provided are a disturbing magnetic field generator and a card reader capable of suppressing the generation of noise caused by vibration of a core. A disturbing magnetic field generator that generates a disturbing magnetic field for disturbing unauthorized reading of magnetic data recorded on a card includes a coil to generate the disturbing magnetic field, a bobbin including a tubular body part in which the coil is wound on an outer peripheral side, and a core disposed inside the tubular body part. A first gap is provided between the tubular body part and the core.
Claims20
A disturbing magnetic field generator that generates a disturbing magnetic field for disturbing unauthorized reading of magnetic data recorded on a card, the disturbing magnetic field generator comprising:
- a coil to generate the disturbing magnetic field;
- a bobbin comprising a tubular body part in which the coil is wound on an outer peripheral side;
- and
- a core disposed inside the tubular body part, wherein a first gap is provided between the tubular body part and the core.
A disturbing magnetic field generator that generates a disturbing magnetic field for disturbing unauthorized reading of magnetic data recorded on a card, the disturbing magnetic field generator comprising:
- a coil to generate the disturbing magnetic field;
- a bobbin comprising a tubular body part in which the coil is wound on an outer peripheral side;
- a core disposed inside the tubular body part;
- and
- a circuit board disposed so as to overlap the coil, the circuit board comprising a circuit to feed the coil,
- wherein a second gap is provided between the circuit board and the coil.
A card reader comprising:
- a card insertion part provided with an insertion slot through which a card is inserted;
- and
- a disturbing magnetic field generator that generates a disturbing magnetic field for disturbing unauthorized reading of magnetic data recorded on the card, the disturbing magnetic field generator comprising:
- a coil to generate the disturbing magnetic field;
- and
- a case in which the coil and a core are housed inside, the card insertion part comprising a case housing part in which the case is housed inside,
- wherein the case is housed in the case housing part in such a manner that an outer wall of the case and an inner wall of the case housing part face each other via a third gap in an extending direction of the core.
Dependencies are inferred from the claim text.