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Magnetic Field patents



      
           
This page is updated frequently with new Magnetic Field-related patent applications. Subscribe to the Magnetic Field RSS feed to automatically get the update: related Magnetic RSS feeds. RSS updates for this page: Magnetic Field RSS RSS


Gradient magnetic field coil device and magnetic resonance imaging device

Hitachi Medical

Gradient magnetic field coil device and magnetic resonance imaging device

Electric bicycle and control method thereof

Mando

Electric bicycle and control method thereof

Electric bicycle and control method thereof

Koninklijke Philips N.v.

Switching-frequency-controlled switch-mode power supply unit for powering magnetic resonance system gradient coils

Date/App# patent app List of recent Magnetic Field-related patents
05/21/15
20150142376
 Perpendicular gradiometric angle sensors, systems and methods patent thumbnailnew patent Perpendicular gradiometric angle sensors, systems and methods
Embodiments relate to magnetic field sensors, such as gradiometric magnetic field angle sensors with generally on-axis arrangements of sensor elements relative to a rotation axis of a magnet. In one embodiment, an angle sensor is arranged on-axis with respect to the rotation axis of a magnet that generates a magnetic field that can be detected by the angle sensor and analyzed to determine an angular position of the magnet.
Infineon Technologies Ag
05/21/15
20150142312
 Method and  estimating moving direction of user and computer-readable storage medium having recorded thereon the method patent thumbnailnew patent Method and estimating moving direction of user and computer-readable storage medium having recorded thereon the method
A method of estimating a moving direction of a user of an apparatus is provided. The method includes obtaining change information of acceleration according to motions of the user from an acceleration sensor mounted in an apparatus for estimating the moving direction of the user, calculating a reaction vector of force applied to a ground surface by feet of the user based on the change information of the acceleration, calculating an included angle between the moving direction of the user based on the reaction vector and an axis of a geomagnetic sensor that is included in the apparatus and detects change information of a magnetic field according to a position of the user, and determining the moving direction of the user based on a moving direction measurement value of the geomagnetic sensor mounted in the apparatus and the included angle..
Seoul National University R&db Foundation
05/21/15
20150142241
 Electric bicycle and control method thereof patent thumbnailnew patent Electric bicycle and control method thereof
Disclosed herein are an electric bicycle and a control method thereof. The electric bicycle includes a hub motor including a motor housing configured to rotate with a wheel, a sprocket connected to a chain so as to rotate by receiving rider pedaling force through the chain, a first speed detector to detect a speed of the hub motor, a second speed detector to detect a speed of the sprocket, a motor driving unit to drive the hub motor, and an electronic control unit to compare the speed of the hub motor with the speed of the sprocket and control the motor driving unit to perform speed control of the hub motor according to a comparison result, wherein the second speed detector includes a magnet provided at the motor housing and disposed adjacent to teeth formed at an outer peripheral surface of the sprocket, a magnetic substance disposed apart from the magnet at a distance corresponding to a gap between the teeth of the sprocket or more gaps, a magnetic substance assembly connected with the magnetic substance and configured to rotate with the motor housing when the motor housing rotates, a pcb substrate fixed to a shaft of the hub motor, and a hall sensor provided at the pcb substrate in order to detect a change of a magnetic field of the magnetic substance assembly..
Mando Corporation
05/21/15
20150142112
 Bone cements containing magnetic calcium phosphate nanoparticles patent thumbnailnew patent Bone cements containing magnetic calcium phosphate nanoparticles
A bone cement formulation comprising: (a) magnetic calcium phosphate nanoparticles present in an amount of 5.0-95 wt. % and having a largest linear dimension of 150 nm to 50 microns; (b) polymerizable acrylate monomer present in an amount of 5.0-95 wt.
Southwest Research Institute
05/21/15
20150141811
 System and  identifying a landmark patent thumbnailnew patent System and identifying a landmark
A field generator for use in a surgical targeting system is disclosed. The field generator includes a mounting structure including elements that are configured to receive components of an electromagnetic field generator.
Smith & Nephew, Inc.
05/21/15
20150141752
 Optical wireless docking system for capsule camera patent thumbnailnew patent Optical wireless docking system for capsule camera
A capsule endoscopic system with wireless docking device is disclosed, where the system comprises a capsule device and a docking device for receiving the data from the capsule device. The docking device supplies power to the capsule device and retrieves data from the capsule device wirelessly.
Capso Vision, Inc.
05/21/15
20150141736
 Generating apparatus of a pulsed magnetic field patent thumbnailnew patent Generating apparatus of a pulsed magnetic field
An apparatus for generating a pulsed magnetic field includes an insulating body, an electrical conductor positioned on the insulating body, and a ferromagnetic body having a hollow portion, wherein the insulating body and the electrical conductor are positioned in the hollow portion. In some embodiments of the present disclosure, the electrical conductor has at least one gap separating the electrical conductor into at least two parts, thereby allowing a current to flow through the at least two parts in parallel to generate a magnetic field in the insulating body..
National Synchrotron Radiation Research Center
05/21/15
20150141735
 Method and device for the desctruction of cells with uncontrolled proliferation patent thumbnailnew patent Method and device for the desctruction of cells with uncontrolled proliferation
The present invention relates to a method and device for the selective destruction of cells that with uncontrolled proliferation in an animal organism, with minimum damage to the surrounding tissue thereby and without needing to perform any kind of surgical operation on the patient: the method consists of the detection of the tumorous area (1) and the sequential and alternate application of at least two alternating magnetic fields with different directions to the treatment area or application until achieving the heating and destruction of the cells. The device used is, therefore, comprised of at least two electromagnets (11, 12) or at least two pairs of electromagnets (11-11′, 12-12′) all being located around the perimeter of a hypothetical circumference or sphere, with the electromagnets in opposing pairs where each opposing pair generates an electromagnetic field in one direction and orientation..
Investigaciones, Desarrollos Innovaciones Tat Iberica, S.l.
05/21/15
20150141050
 Applying indoor magnetic fields for acquiring movement information patent thumbnailnew patent Applying indoor magnetic fields for acquiring movement information
An apparatus caused at least to acquire information indicating first indoor magnetic field vectors measured by a first portable device inside a building; generate a first indoor magnetic field sequence, imfs, on the basis of the first indoor magnetic field vectors; acquire information indicating second indoor magnetic field vectors measured by a second portable device inside the building; generate a second imfs on the basis of the second indoor magnetic field vectors, wherein the first and the second imfss represent at least one of the magnitude and the direction of the earth's magnetic field; perform a comparison between at least part of the first imfs and at least part of the second imfs; and acquire information on the relative movement of the first portable device with respect to the second portable device inside the building on the basis of the comparison result.. .
Indooratlas Oy
05/21/15
20150140633
 System and  proliferation of stem cells in cellular tissue patent thumbnailnew patent System and proliferation of stem cells in cellular tissue
A method and a system are provided for subjecting organic cells in a region of a subject to an extremely low frequency magnetic field. At least one resonance medium is operably connected to a generator.
05/21/15
20150140595
new patent

Formulations for the synthesis of paramagnetic particles and methods that utilize the particles for biochemical applications


A set of paramagnetic particles synthesized by co-precipitation methods wherein an alkaline hydroxide solution is mixed with a metal salt solution. The alkaline hydroxide features ammonium hydroxide, potassium hydroxide, sodium hydroxide, or mixtures thereof.
05/21/15
20150140153
new patent

Inductively heated extruder heater


One embodiment of a heated nozzle for extruding meltable material consists of an electrically conductive nozzle, comprised of an inlet, an outlet, and a passage connecting inlet and outlet. The nozzle fits into a hole or gap cut or formed through a loop of high permeability soft magnetic material such as ferrite or pressed iron powder.
05/21/15
20150139479
new patent

Magnetic circuit and coaxial speaker using the same


A magnetic circuit for coaxial speaker includes a first magnetic unit, at least one second magnetic unit arranged around the first magnetic unit and at least one third magnetic unit arranged around the at least one second magnetic unit. The magnetic pole arrangement of the second magnetic unit is reversed to the magnetic pole arrangement of the first magnetic unit and the second magnetic unit, enabling a first magnetic loop to be established between the first magnetic unit and the at least one second magnetic unit and a second magnetic loop to be established between the at least one second magnetic unit and the at least one third magnetic unit.
Merry Electronics (suzhou) Co., Ltd.
05/21/15
20150138684
new patent

Electric circuit breaker capable of circuit-breaking when detecting arc and over-load


Disclosed is a power off device which includes a micro arc detector for turning on a first switching element, based on a voltage induced in a high frequency choke coil by a high frequency pulse current caused by micro arc at a power line, a high current arc detector for outputting a high current arc detection current during turning-on of a second switching element made based on variation of a magnetic field generated at a coil, a delay unit for accumulatively charging the micro arc detection current or the high current arc detection current in a delay capacitor at a predetermined time constant, a power off unit for electrically disconnecting a load from the power line when an operating voltage is applied, and a first switch for connecting the operating voltage to the power off unit in response to the arc detection signal.. .
05/21/15
20150138672
new patent

Magnetic recording head and disk drive provided therewith


According to one embodiment, a magnetic recording head includes a main pole configured to apply a recording magnetic field to a recording layer of a recording medium, a trailing shield opposed to the main pole with a write gap therebetween, and a high-frequency oscillator between the main pole and the trailing shield in a range of a width of the main pole in a track width direction, and configured to generate a high-frequency magnetic field. The high-frequency oscillator includes a spin injection layer, an intermediate layer, and an oscillation layer, and at least the oscillation layer comprises divided oscillation regions..
Kabushiki Kaisha Toshiba
05/21/15
20150137933
new patent

Arrangement for providing vehicles with energy comprising magnetizable material


The invention relates to an apparatus for providing vehicles with energy by magnetic induction. The apparatus has a primary side electric conductor and a field shaping layer.
Bombardier Transportation Gmbh
05/21/15
20150137922
new patent

Magnetic circuit


A magnetic circuit that forms an arc-shaped magnetic field space is provided. Of two magnets constituting a first magnetic circuit 10, a first magnetic pole 1 is provided with a first yoke 11 that is arc-shaped in planar view, a first magnet 13 that is arc-shaped in planar view and a magnetic pole piece 15.
Hitachi Metals, Ltd.
05/21/15
20150137921
new patent

Wiring assembly and forming a channel in a wiring assembly for receiving conductor and providing separate regions of conductor contact with the channel


A conductor assembly and method for constructing an assembly of the type which, when conducting current, generates a magnetic field or which, in the presence of a changing magnetic field, induces a voltage. In one embodiment the method provides a first insulative layer tubular in shape and including a surface along which a conductor segment may be positioned.
Advanced Magnet Lab, Inc.
05/21/15
20150137920
new patent

Wiring assembly and forming a channel in a wiring assembly for receiving conductor and providing separate regions of conductor contact with the channel


A conductor assembly and method for constructing an assembly of the type which, when conducting current, generates a magnetic field or which, in the presence of a changing magnetic field, induces a voltage. In one embodiment the method provides a first insulative layer tubular in shape and including a surface along which a conductor segment may be positioned.
Advanced Magnet Lab, Inc.
05/21/15
20150137817
new patent

Casing mounted em transducers having a soft magnetic layer


Illustrative permanent electromagnetic (em) monitoring systems and methods have a casing string positioned inside a borehole and equipped with one or more em transducer modules having a layer of soft magnetic material that substantially encircles the casing string to amplify a signal response of a magnetic field transmitting and/or sensing element. The layer preferably has an axial dimension at least twice an axial dimension of the magnetic field sensing element, with a relative permeability at least twice that of the casing material.
Halliburton Energy Services, Inc.
05/21/15
20150137814
new patent

Gradient magnetic field coil device and magnetic resonance imaging device


A gradient magnetic field coil device is provided in which an eddy current magnetic field of an even-ordered component can be reduced. The gradient magnetic field coil device includes a forward coil and a reverse coil which faces the forward coil so as to sandwich a middle surface and through which flows an electric current directed opposite to the forward coil.
Hitachi Medical Corporation
05/21/15
20150137810
new patent

Switching-frequency-controlled switch-mode power supply unit for powering magnetic resonance system gradient coils


A power supply unit (130) for powering at least one gradient coil (128) of a magnetic resonance (mr) examination system (110) with a main magnet (114) having, in at least one state of operation, a substantially static magnetic field strength, and with an mr measurement signal bandwidth, the power supply unit (130) comprising: a switched-mode power converter (134) for powering the at least one gradient coil (128), comprising at least one switching member provided to switch between a conducting state configuration and an essentially non-conducting state configuration at a first fundamental switching frequency (fsw); a pulse control unit (132) designed to provide switching pulses at the first fundamental switching frequency (fsw) for controlling the switching of the at least one switching member; wherein, upon triggering by a trigger signal (142), the pulse control unit (132) is provided to change the first fundamental switching frequency (fsw) to at least a second fundamental switching frequency (fsw).. .
Koninklijke Philips N.v.
05/21/15
20150137806
new patent

Three axis magnetic sensor device and method using flex cables


A method and structure for a three-axis magnetic field sensing device. An ic layer having first bond pads and second bond pads can be formed overlying a substrate/soi member with a first, second, and third magnetic sensing element coupled the ic layer.
Mcube Inc.
05/21/15
20150137804
new patent

Magnetic field sensing module, measurement method, and manufacturing a magnetic field sensing module


A magnetic field sensing module including a plurality of magnetic flux concentrators and a plurality of sensing elements is provided. Each of the magnetic flux concentrators extends along a first extension direction, and the magnetic flux concentrators are arranged along a second direction.
Isentek, Inc.
05/21/15
20150137801
new patent

Method and aligning a vehicle with an inductive charging system


A method and apparatus for aligning a vehicle with an inductive charging system is characterized by the addition of alignment coils to a secondary coil on the vehicle. For efficient inductive charging, it is necessary that the vehicle mounted secondary coil be aligned with a stationary primary coil of a transformer of the inductive charging system.
Evatran Group, Inc.
05/21/15
20150137797
new patent

Off-axis magnetic field angle sensors


Embodiments relate to magnetic field angle sensing systems and methods. In an embodiment, a magnetic field angle sensing system configured to determine a rotational position of a magnetic field source around an axis, comprises n sensor devices arranged in a circle concentric to an axis, wherein n>1 and the sensor devices are spaced apart from one another by about (360/n) degrees along the circle, each sensor device comprising a magnetic field sensing device having a sensitivity plane comprising at least one reference direction of the magnetic field sensing device, wherein the magnetic field sensing device is sensitive to a magnetic field component in the sensitivity plane and configured to provide a signal related to a (co)sine of an angle between the reference direction and the magnetic field in the sensitivity plane; and circuitry coupled to the n sensor devices and configured to provide a signal indicative of a rotational position of a magnetic field source around the axis determined by combining the signals from the magnetic field sensing devices of the n sensor devices..
Infineon Technologies Ag
05/21/15
20150137796
new patent

On-axis magnetic field angle sensors, systems and methods


Embodiments relate to magnetic field sensors, such as magnetic field angle sensors with generally on-axis arrangements of sensor elements relative to a rotation axis of a magnet or shaft. The shaft comprises or is coupled to an end portion that comprises a soft magnetic material, in embodiments, with the end portion having an end surface proximate the sensor that is rotationally asymmetric with respect to the rotation axis running through the length of the shaft.
Infineon Technologies Ag
05/21/15
20150137746
new patent

Wireless power transfer device and wireless charging system having same


The present specification provides a wireless power transfer device formed to transmit power to a wireless power reception device, and a power transfer unit in the wireless power transfer device comprises: a first coil formed to generate a magnetic field so as to transmit power in an induction scheme; and a second coil wound around the first coil and formed to generate a magnetic field vibrating at a resonance frequency so as to transmit power in a resonance scheme.. .
Lg Electronics Inc.
05/21/15
20150137744
new patent

Transmitter apparatus of wireless power transmission system for charging vehicle


A transmitter apparatus of a wireless power transmission system for charging a vehicle includes a parking stopper configured to be fixedly mounted on a ground of a parking space. A transmitter is configured to be connected to the parking stopper and to include a transmitter coil which generates a magnetic field at the time of parking the vehicle..
Hyundai Motor Company
05/21/15
20150137720
new patent

Synchronous machine control device


A synchronous machine control means is provided with a magnet state output means (7) that estimates the magnetic flux of a permanent magnet forming the magnetic field of a synchronous machine (1); in a magnet state correction value calculation mode, the magnet state output means (7) calculates a magnet state correction value (Δφm1); in a magnet state estimation mode, the magnet state output means (7) is provided with a magnet stated estimation device (8) that calculates a magnetic flux estimation value (φm1′) of the permanent magnet under the given condition of a magnetic flux command (φ1) and a δ-axis current command (i1) and a magnet state correction means (9) that corrects the magnetic flux estimation value (φm1′) of the permanent magnet obtained by the magnet stated estimation device (8), by use of the magnet state correction value (Δφm1).. .
Mitsubishi Electric Corporation
05/21/15
20150137625
new patent

Stator device for a linear motor and linear transport system


A stator device for a linear motor comprises an electrically energizable magnetic field generator for forming a magnetic field, the magnetic field generator comprising a stator tooth and a coil wound around the stator tooth and a holding module for holding the magnetic field generator, the holding module having a first and a second holding device, wherein the magnetic field generator is arranged between the two holding devices in that a first end of the stator tooth is fixed to the first holding device and a second end of the stator tooth is fixed to the second holding device.. .
Beckhoff Automation Gmbh
05/21/15
20150137612
new patent

Antenna coil


Provided is an antenna coil capable of forming a magnetic field in a desired direction in an efficient manner, while suppressing leakage of magnetic flux into a space other than the space in which the magnetic field is formed. The antenna coil includes a main coil portion formed by winding a length of conductor wire around a first reference axis and an auxiliary coil portion formed by winding the conductor wire around a second reference axis.
Equos Research Co., Ltd.
05/21/15
20150137525
new patent

Electric generator


An electric generator includes a wheel coupled to an axle of a vehicle which includes battery. A rotator is fixedly mounted to the wheel and includes a series of magnets positioned so that the north pole of one magnet abuts the south pole of an adjacent magnet.
05/21/15
20150137427
new patent

Consolidation of complex contoured thermoplastic structures


A method and apparatus for forming a stiffened thermoplastic panel is presented. The method may comprise placing a number of forming tools within a number of concave areas of a thermoplastic preform.
The Boeing Company
05/21/15
20150137366
new patent

Reactive bonding of a flip chip package


An array of bonding pads including a set of reactive materials is provided on a first substrate. The set of reactive materials is selected to be capable of ignition by magnetic heating induced by time-dependent magnetic field.
International Business Machines Corporation
05/21/15
20150137321
new patent

Apparatus and magnetic-field guided metal-assisted chemical etching


A magnetic field-guided method of metal-assisted chemical etching comprises immersing a structure that comprises a two-dimensional magnetic pattern layer on a surface thereof in an etchant solution. The magnetic pattern layer sinks into the structure as portions of the structure directly under the magnetic pattern layer are etched.
The Board Of Trustees Of The University Of Illinois
05/21/15
20150137292
new patent

Magnetoresistance sensor with perpendicular anisotropy


A nanoscale tunnel magneto-resistance (tmr) sensor comprising an in-plane-magnetized reference layer and a free layer comprising interfacial perpendicular anisotropy, wherein the free layer comprises a sensing layer for sensing resistance as a function of applied magnetic field and is tunable to vary the direction of the sensing layer magnetization to be in-plane, canted, or out-of-plane.. .
The Regents Of The University Of California
05/21/15
20150136979
new patent

Charged particle beam device


When a signal electron is detected by energy selection by combining and controlling retarding and boosting for observation of a deep hole, etc., the only way for focus adjustment is to use a change in magnetic field of an objective lens. However, since responsiveness of the change in magnetic field is poor, throughput reduces.
Hitachi High-technologies Corporation
05/21/15
20150136881
new patent

Method for producing graphene


The invention uses a dispersion (303) of suspended single-layer graphene (201), multilayer graphene (202), and graphite (203), and applies a magnetic field to the dispersion (303) to separate the single-layer graphene (201) from the dispersion (303). In the magnetic field applying step of the graphene producing method, the single-layer graphene (201), the multilayer graphene (202), and the graphite (203) are situated at different locations in solvent by using the difference in the diamagnetism strengths of the single-layer graphene (201), the multilayer graphene (202), and the graphite (203)..
Panasonic Intellectual Property Management Co. Ltd.
05/21/15
20150136860
new patent

Surface sensor


The invention relates to a sensor for detection of properties and structures of an organic tissue and its surface, e.g., a fingerprint sensor comprising a chosen number of sensor electrodes at chosen positions for coupling to a finger tissue and its surface having a size less or comparable to the size of the structures, characteristics or properties of the finger tissue or surface, and a processing unit including electronic circuitry connected to said electrodes for detection of the voltage at, or the current flow in the electrodes, thereby providing for detection and collection of information of related capacitance, impedance, electromagnetic field, fingerprint, tissue aliveness or other biometric, physical, physiological, thermal or optical or characteristics or properties of the tissue or its surface positioned over the electrodes, the processing unit being mounted on one side of a substrate and the electrodes being embedded in said substrate, the substrate including through going first, second and third conductive paths between said sensor electrodes and said measurement circuitry. The substrate is made from a polymer material such as polyimide, implemented as a rigid or a flexible multi layer build-up substrate, said first, second, and third conductive paths are constituted by through going substrate sections of a chosen size and material..
Idex Asa
05/21/15
20150136709
new patent

Water treatment systems and methods


A water treatment device and methods of treating water such as cooling tower water, swimming pool water, and hot tub or spa water, are described. The water treatment device utilizes ultraviolet radiation, a magnetic field, and ozone fortified air to treat the water, typically resulting in reduced microbial contamination and reduced alkalinity in cooling tower water.
Aardvark Ip Holding, Llc
05/21/15
20150136469
new patent

High-frequency signals double-layer flat cable adapter card


A high-frequency signal double-layer flat cable adapter card that is capable of eliminating transmission disorder of a double-layer cable caused by paralleling and overlap of high-frequency signals and a direct current power supply loop. The high-frequency double-layer flat cable adapter card comprises a first connecting end, a second connecting end and a flat cable group formed by at least two strips of flat cables.
05/21/15
20150135852
new patent

Battery-free meter for flowing media


Battery-free meter for flowing media, in which a rotor body (sleeve 4) which is fitted with permanent magnets (6, 7) and is driven in a rotary fashion by the medium is arranged in the pipeline (34) carrying the flowing medium (8) and in which the rotating magnetic field generated by this acts on at least one wiegand sensor (25, 26), which is arranged outside the flowing medium in the area around the meter, wherein a housing part (15) which is open on at least one side sealing to the interior of the pipeline (34) engages with the pipeline (34) and around which the flowing medium at least partially flows, such that the external periphery of the housing part (15) is at least partially embraced by the rotor part (sleeve 4) which is driven in a rotary fashion and generates the rotating magnetic field and that at least one wiegand sensor (25, 26) is arranged in the housing part (15).. .
Hengstler Gmbh
05/21/15
20150135736
new patent

Refrigerator with a configurable space


A refrigerator including a configurable space having a hall effect integrated circuit configured to detect a magnetic field and generate an electrical signal; a function control device configured to control an environment of the configurable space according to predetermined or preset information and the electrical signal from the hall integrated circuit; and a storage bin in the configurable space, having a magnet thereon or therein in a location corresponding to the hall effect integrated circuit.. .
Dongbu Daewoo Electronics Corporation
05/14/15
20150133730

Magnetically guiding system and magnetically guiding method


A magnetically guiding system includes: a capsule medical device that has a magnet provided therein; an information acquiring unit that acquires physical information about magnetic guiding of the capsule medical device; a magnetic field generating unit that generates a magnetic field for magnetically guiding the capsule medical device; and a control unit that sets a magnetic field condition based on the physical information acquired by the information acquiring unit and controls the magnetic field generating unit to generate a magnetic field corresponding to the magnetic field condition.. .
05/14/15
20150133717

Monitoring and detecting magnetic stimulation


A method, system, and apparatus for monitoring a magnetic field related to magnetic stimulation may be provided. A system for monitoring a pulsing magnetic field related to magnetic stimulation therapy may include a magnetic stimulation component, a sensor, and a processor.
05/14/15
20150133303

Electrical generator


An electrical generator is provided. The generator comprises an outer stator coil comprising an input terminals in the outer stator coil, the outer stator coil adapted to provide an electromagnetic field in response to an excitation current applied to the input terminals; a plurality of inner pick-up coils coupled to an electrical output of the electrical generator; and a rotating cage comprising a plurality of shielding members and openings, the plurality of shielding members at least partially shielding the plurality of inner pick-up coils from an electromagnetic field generated by the outer stator coil while the rotating cage is rotating.
05/14/15
20150133030

Electromagnetic field reduction brassiere


As one implementation example, a product is described which comprises at least one protective layer. The at least one protective layer comprises an electromagnetic field resistant material.
05/14/15
20150132505

Plasma processing apparatus and plasma processing method


A plasma processing apparatus is provided. According to the apparatus, a main antenna connected to a high frequency power source and an auxiliary antenna electrically insulated from main antenna is arranged.
05/14/15
20150131990

Optical switch


An optical switch includes: a first birefringent element; a first faraday rotator; a first half-wave plate; a second birefringent element; a second half-wave plate; a second faraday rotator; and a third birefringent element, which are arranged in a forward direction from the front, wherein the first birefringent element splits light in the forward direction from a first optical port into ordinary and extraordinary lights emitted onto first and second optical paths, respectively, the first and second half-wave plates are arranged on the first and second optical paths, respectively, and in the first and second faraday rotators, a permanent magnetic field in a left-right direction and an external magnetic field in a front-back direction in an on state are applied to a faraday element, a bidirectional optical path is formed between the first and second optical ports in an off state, and the optical path is interrupted in the on state.. .
05/14/15
20150131831

Hearing aid with an antenna


A hearing aid with an assembly, the assembly includes: a first side; a second side; a signal processor; a wireless communications unit, the wireless communications unit being connected to the signal processor; and a monopole antenna for electromagnetic field emission and electromagnetic field reception, the antenna being connected to the wireless communications unit, the antenna having an excitation point; wherein at least a part of a first branch of the antenna extends from the excitation point along the first side of the assembly, the first branch having a first end, the first end being free or being coupled with the excitation point via a third branch; and wherein a second branch of the antenna extends from the excitation point, at least a part of the second branch extending in a space located between the first side of the assembly and the second side of the assembly.. .
05/14/15
20150131830

Hearing aid with an antenna


A hearing aid with an assembly, the assembly includes: a microphone; a signal processor for processing a first audio signal into a second audio signal compensating a hearing loss of a user; a wireless communication unit configured for wireless data communication; and an antenna for emission of an electromagnetic field, the antenna being coupled with the wireless communication unit, the antenna having a total length between three quarters of a wavelength of the emitted electromagnetic field and five quarters of the wavelength; wherein a part of the antenna extends from a first side of the assembly to a second side of the assembly; and wherein the antenna has a midpoint located at the part of the antenna extending from the first side to the second side, or a distance between the midpoint of the antenna and the part of the antenna is less than a quarter of the wavelength.. .
05/14/15
20150131829

Hearing aid with an antenna


A hearing aid includes: a signal processor; a wireless communications unit, the wireless communications unit being connected to the signal processor; and an antenna for electromagnetic field emission and electromagnetic field reception, the antenna being connected to the wireless communications unit, the antenna having an excitation point; wherein a first branch of the antenna extends from the excitation point and a second branch of the antenna extends from the excitation point; and wherein the antenna has a first resonant frequency and a second resonant frequency.. .
05/14/15
20150131828

Hearing aid with an antenna


A hearing aid with an assembly, the assembly includes: a first side; a second side; a signal processor; a wireless communications unit, the wireless communications unit being connected to the signal processor; and an antenna for electromagnetic field emission and electromagnetic field reception, the antenna being connected to the wireless communications unit, the antenna having an excitation point; wherein a first branch of the antenna extends from the excitation point and a second branch of the antenna extends from the excitation point, at least a part of the second branch extending from the first side to the second side, and wherein the second branch has at least one ground connection.. .
05/14/15
20150131827

Electronic device having hearing aid compatibility


An electronic device having hearing aid capability is disclosed. The electronic device includes a linear resonance actuator (lra).
05/14/15
20150131183

Microwave-assisted magnetic recording head with high saturation magnetization material side shield


Approaches to improving the signal-to-noise ratio in a microwave-assisted magnetic recording hard disk drive over the entire region from the inner diameter to the outer diameter of the disk, especially in the context of shingled magnetic recording, include a narrower side gap on the side opposing a spin torque oscillator offset direction than the side gap in the offset direction, thereby increasing the gradient of the recording magnetic field in the cross-track direction and reducing the track edge noise of the recording pattern. Embodiments include use of a side shield on the side opposing the offset direction that has a higher saturation magnetization than the side shield on the side in the offset direction, thereby further increasing the gradient of the recording magnetic field in the cross-track direction..
05/14/15
20150131178

Magnetic data eraser


The magnetic data eraser includes: a mounting and immobilizing tray on which a magnetic recording medium is mounted, the mounting tray being inclined at an angle of 60±10 degrees to the horizontal; a magnetizer that is encircled by a magnetizing coil, the magnetizer having a hollow portion into which the mounting and immobilizing tray is inserted; and a controller that causes an electric current to flow as an excitation current through the magnetizing coil, the excitation current generating a magnetic field that erases data stored in the magnetic recording medium.. .
05/14/15
20150130990

Camera module


There is provided a camera module, including: a housing including a lens barrel therein; an actuator including a driving coil wound around an outer surface of the lens barrel and a magnet disposed in the housing to face the driving coil; a substrate disposed on a lower portion of the housing and having an image sensor attached to one surface thereof; and an offset coil provided on the substrate, wherein the driving coil generates a magnetic field in a direction toward the offset coil and the offset coil generates a magnetic field in a direction toward the driving coil.. .
05/14/15
20150130765

Cancelling induced currents in a touch sensing device having an embedded near field communication antenna


A method and system for enabling a near field communication antenna to be disposed adjacent to electrodes of a touch sensing device, the near field communication antenna being operated, and the magnetic field inductance and electric field coupling between the electrodes and the near field communication antenna being minimized in order to substantially reduce or eliminate induced currents on the electrodes.. .
05/14/15
20150130677

Uhf-rfid antenna for point of sales application


A uhf-rfid antenna having a central segmented loop surrounded by passive dipole structures provides shaping of the electric and magnetic fields to reduce the number of false positive reads by a uhf-rfid reader at a point of sale.. .
05/14/15
20150130669

Antenna device and wireless apparatus including same


An antenna device includes a feeding element connected to a feed point, and a radiating element disposed at a distance from the feeding element. The feeding element is coupled with the radiating element by electromagnetic field coupling to feed the radiating element so that the radiating element functions as a radiating conductor..
05/14/15
20150130571

Magnetization magnet of magnetic encoder and method thereof


A magnetization apparatus for a magnet of a magnetic encoder. The magnetization apparatus is configured to alternately form a positive and a negative magnetization areas by moving a magnetic member along a route penetrating a gap of a magnetization yoke while alternately generating positive and negative magnetic fields in the gap of the magnetization yoke.
05/14/15
20150130564

Frequency selective limiter


A selective frequency limiter having a magnetic material and a slow wave structure disposed to magnetically couple a magnetic field, produced by electromagnetic energy propagating through the slow wave structure, into the magnetic material.. .
05/14/15
20150130552

Tunable guard ring for improved circuit isolation


A tunable guard ring for improved circuit isolation is disclosed. In an exemplary embodiment, an apparatus includes a closed loop guard ring formed on an integrated circuit and magnetically coupled by a selected coupling factor to a first inductor formed on the integrated circuit.
05/14/15
20150130550

Materials, devices and methods related to below-resonance radio-frequency circulators and isolators


Materials, devices and methods related to below-resonance radio-frequency (rf) circulators and isolators. In some embodiments, a circulator can include a conductor having a plurality of signal ports, and one or more magnets configured to provide a magnetic field.
05/14/15
20150130480

System and monitoring characteristics of an electrical device


A remote monitoring system is presented. The system includes a sensor unit disposed in the electrical device, and configured to obtain measurement characteristics in response to a measurand of the electrical device, obtain reference characteristics insensitive to the measurand of the electrical device, and communicate the measurement characteristics and the reference characteristics using time varying electromagnetic fields.
05/14/15
20150130467

Transmission antenna apparatus and magnetic resonance imaging device


The transmission antenna apparatus is configured for emitting transmission magnetic fields in magnetic resonance imaging devices and includes one or more flat antennas. A magnetic resonance imaging device includes such a transmission antenna apparatus..
05/14/15
20150130457

Magnetic field measurement apparatus, magnetic field measurement system and magnetic field measurement method


A magnetic field measurement apparatus includes a first gas cell disposed in a +z direction when seen from an object to be measured, a second gas cell disposed in the +z direction when seen from the first gas cell, a first measurement unit which measures a component of a magnetic field in the first gas cell, a second measurement unit which measures a component of a magnetic field in the second gas cell, a magnetic field generation unit which generates the magnetic field toward the second gas cell so as to reduce the component measured by the second measurement unit, and an output unit which outputs a signal in response to the difference in the components respectively measured by the first measurement unit and second measurement unit.. .
05/14/15
20150130455

Magnetoresistive magnetic field gradient sensor


Disclosed is a magnetoresistive magnetic field gradient sensor, comprising a substrate, a magnetoresistive bridge and a permanent magnet respectively disposed on the substrate; the magnetoresistive bridge comprises two or more magnetoresistive arms; each magnetoresistive arm consists of one or more magnetoresistive elements; each magnetoresistive element is provided with a magnetic pinning layer; the magnetic pinning layers of all the magnetoresistive elements have the same magnetic moment direction; the permanent magnet is disposed adjacent to each magnetoresistive arm to provide a bias field, and to zero the offset of the response curve of the magnetoresistive element; the magnetoresistive gradiometer includes wire bonding pads that can be electrically interconnected using wire bonding to an asic or to the lead frame of a semiconductor chip package.. .
05/14/15
20150130453

Magnetic detection device


A magnetic field component in a z direction is guided by a magnetic field guide layer and applied to a magnetic sensor in an x direction that is the same as a sensitivity axis direction thereof, and a detection output is obtained. A bridge circuit is formed with a plurality of magnetic sensors and configured such that an output is not provided for a magnetic field component in the x direction.
05/14/15
20150130450

Energy-self-sufficient multiturn rotary encoder and determining a unique position of an encoder shaft by means of the multiturn rotary encoder


The present invention relates einen energy-self-sufficient multiturn rotary encoder for detecting a number of complete 360° revolutions of an encoder shaft, rotating about a rotational axis and to which an excitation magnet is mounted in a rotationally fixed manner for generating an external magnetic field, as well as for determining an absolute rotational angle indicating a fine-resolved position within one 360° revolution of the encoder shaft, wherein the multiturn rotary encoder for energy-self sufficiently detecting the number of the complete 360° revolutions of the encoder shaft several functional blocks comprises. Further, a corresponding method is taught..
05/14/15
20150130449

Rotational angle sensor


A rotational angle sensor for determining an angular position of a reference component with respect to an axial direction includes a magnet retaining component having a magnet. The magnet retaining component is connectable to the reference component via an interference-fit connection so as to rotate with the reference component while being axially displaceable relative to the reference component.
05/14/15
20150130445

Remote sensing system


Remote sensors and methods of remote sensing are disclosed. A remote sensor includes a first circuit and a second circuit.
05/14/15
20150130443

Magnetometer test arrangement and method


Manufacturing of magnetometer units employs a test socket having a substantially rigid body with a cavity therein holding an untested unit in a predetermined position proximate electrical connection thereto, wherein one or more magnetic field sources fixed in the body provide known magnetic fields at the position so that the response of each unit is measured and compared to stored expected values. Based thereon, each unit can be calibrated or trimmed by feeding corrective electrical signals back to the unit through the test socket until the actual and expected responses match or the unit is discarded as uncorrectable.
05/14/15
20150130407

Three-coil topology for wireless power transfer


A system using a three-coil topology for wireless power transfer is disclosed. The system comprises a primary resonator coupled to a power source, a repeater resonator and a receiver resonator.
05/14/15
20150130390

Electronically controlled universal motor


An electric motor apparatus comprising: a stator component and a rotor component rotationally mounted coaxially with and within the stator component. The stator component and the rotor component each comprise windings configured to generate an electromagnetic field from an electric current.
05/14/15
20150130388

Controller of linear motion device and control the same


The present disclosure relates to controllers of linear motion devices and control methods of the same, in particular, to a controller of a linear motion device and a control method of the same capable of controlling the position of the linear motion device accurately, in a case where a misalignment of the mounting position of a magnetic sensor or a magnetizing variation of a magnet occurs, or in a case where a magnetic field detected by the magnetic sensor receives an interference of the magnetic field generated by a driving coil of the linear motion device.. .
05/14/15
20150130331

Magnetostatic voltage/current limiting system for wind turbine generator comprising the same


A magnetic voltage/current limiting system is mounted in conjunction with a main coil, in a coil assembly of a wind turbine generator, for limiting the outputted voltage (or current) to a predetermined upper value. The limiting system generally comprises at least one limiting coil and a control circuit connected to the main coil.
05/14/15
20150130297

Energy harvesting device


An energy harvesting device comprises a semiconductor device, a first magnet core, and at least one second magnet core. The semiconductor device, disposed in a housing, includes a plurality of first sensors and a plurality of second sensors.
05/14/15
20150130003

Image sensor and fabricating the same


An image sensor includes a substrate including photoelectric conversion regions, a magnetic layer disposed on a back side of the substrate and suitable for generating a magnetic field, and color filters and microlenses disposed on the magnetic layer.. .


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Magnetic Field topics: Magnetic Field, Transverse, Magnetic Separator, Homogeneous, Photovoltaic Cell, Semiconductor, Compliance, Anisotropy, Crystallin, Electrical Machine, Wireless Power, Transmitter, Radial Direction, Eddy Currents, Calibration

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