Magnetic field generation device, magnetic recording medium processing apparatus, and magnetic field generation method
AssigneeNidec Sankyo Corporation
InventorsKeiji Miyazawa, Yohei Shimizu, Satoru Aoki
Life of this patent
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Abstract
A magnetic field generation device may include a coil generating a magnetic field, a drive part configured to apply a voltage to the coil or supply a current to the coil, a monitoring part configured to acquire state information whose value is varied together with temperature of the coil, and a control part which controls the voltage applied by the drive part or the current supplied by the drive part based on the state information acquired by the monitoring part.
Claims20
A magnetic recording medium processing apparatus for use with a magnetic card, the magnetic recording medium processing apparatus comprising:
- a card insertion port into which the magnetic card is inserted;
- an information reading part structured to read predetermined information from the magnetic card inserted into the card insertion port;
- and
- a magnetic field generation device structured to disturb illegal reading of magnetic data recorded in the magnetic card, the magnetic field generation device comprising:
- a magnetic field generation part structured to generate a magnetic field;
- a drive part configured to apply a voltage to the magnetic field generation part or to supply a current to the magnetic field generation part;
- a monitoring part configured to acquire state information whose value is varied together with temperature of the magnetic field generation part;
- and
- a control part configured to control the voltage which is applied by the drive part, or configured to control the current which is supplied by the drive part based on the state information acquired by the monitoring part.
A magnetic field generation method for using with a magnetic card, the method comprising:
- inserting the magnetic card into a card insertion port;
- reading predetermined information from the magnetic card inserted into the card insertion port;
- disturbing illegal reading of magnetic data recorded in the magnetic card;
- processing applying a voltage to a coil which generates a magnetic field or supplying a current to the coil;
- processing acquiring state information whose value is varied together with temperature of the coil;
- and
- processing controlling a voltage applied to the coil or a current supplied to the coil based on the state information acquired.
Dependencies are inferred from the claim text.