MRI acoustic system, acoustic output device, and electro-acoustic transducer
AssigneeSamsung Electronics Co., Ltd.
InventorOh-soo Kwon
Life of this patent
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Abstract
A magnetic resonance imaging (MRI) acoustic system includes a magnet; an electro-acoustic transducer that includes a coil through which a current flows so that an attractive force or a repulsive force is generated with respect to the magnet, and a vibrating plate that vibrates in response to the attractive force or the repulsive force; and a controller that controls an intensity of a current input to the electro-acoustic transducer according to a position of the electro-acoustic transducer in a magnetic field generated by the magnet.
Claims47
A magnetic resonance imaging (MRI) acoustic system comprising:
- a magnet;
- an electro-acoustic transducer that comprises a coil through which a current flows so that an attractive force or a repulsive force is generated with respect to the magnet, and a vibrating plate that vibrates in response to the attractive force or the repulsive force;
- and
- a controller that controls an intensity of a current input to the electro-acoustic transducer according to a position of the electro-acoustic transducer in a magnetic field generated by the magnet.
An acoustic output device that uses a magnetic field of a magnetic resonance imaging (MRI) apparatus, the acoustic output device comprising:
- a coil through which a current for generating an attractive force or a repulsive force with respect to a magnet of the MRI apparatus flows;
- a vibrating plate that vibrates according to the attractive force or the repulsive force;
- and
- a controller that controls an intensity of a current that flows in the coil according to a position of an electro-acoustic transducer with respect to the magnetic field.
An electro-acoustic transducer that uses a magnetic field of a magnetic resonance imaging (MRI) apparatus, the electro-acoustic transducer comprising:
- a first coil through which a first current for generating an attractive force or a repulsive force with respect to the MRI apparatus flows;
- a second coil for reducing a magnetic field generated by the first current that flows in the first coil;
- and
- a vibrating plate that vibrates according to the attractive force or the repulsive force.
An electro-acoustic transducer that uses a magnetic field of a magnetic resonance imaging (MRI) apparatus, the electro-acoustic transducer comprising:
- a vibrating unit that vibrates according to a Lorentz force generated by the magnetic field;
- a supporting unit that fixes both edges of the vibrating unit;
- and
- a first coil that is disposed on the vibrating unit and vibrates together with the vibrating unit.
An electro-acoustic transducer that uses a magnetic field of a magnetic resonance imaging (MRI) apparatus, the electro-acoustic transducer comprising:
- a vibrating unit that vibrates according to an attractive force or a repulsive force with respect to a magnet of the MRI apparatus;
- a first coil that is disposed on the vibrating unit in a repeating pattern and through which a current for generating the attractive force or the repulsive force flows;
- and
- a second coil that is combined with the first coil, and through which a current input to the first coil and output from the first coil flows.
Dependencies are inferred from the claim text.