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Match Document Document Title
7440227 Magnetic head having a hall effect sensor and circuit for detecting recorded bits from magnetic recording media  
A magnetic head has a sensor which employs the “Hall effect”. In one illustrative example, the sensor includes a generally planar body made of a semiconductor heterostructure; first and second...
7355813 Method of fabricating a narrow projection such as a write pole extending from a substrate  
An article is formed as a substrate having a projection extending outwardly therefrom. The article may be a magnetic recording head and the projection a write pole. The projection has a width in a...
7253995 Magnetic head and magnetic recording/reproducing device  
A magnetic head includes a first electrode layer, a first ferromagnetic electrode pair that is electrically connected to the first electrode layer, and a second ferromagnetic electrode pair that...
7110216 Magnetic thin film sensor based on the extraordinary hall effect  
A magnetic field sensor, including an insulating substrate and a conductive thin film deposited on the substrate. The thin film consists of a material having an extraordinary Hall coefficient, the...
6937434 Magnetic field sensor utilizing anomalous hall effect magnetic film  
A magnetic field sensor for sensing an applied magnetic field by utilizing a Hall effect. Used, as a sensor portion, are compound materials such as FeN showing a significant anomalous Hall effect,...
6791792 Magnetic field sensor utilizing anomalous hall effect magnetic film  
A magnetic field sensor for sensing an applied magnetic field by utilizing a Hall effect. Used, as a sensor portion, are compound materials such as FeN showing a significant anomalous Hall effect,...
6542068 Vertical hall effect sensor and a brushless electric motor having a vertical hall effect sensor  
A vertical Hall sensor includes a semiconductor crystal with three or more arm sections that are arranged at a uniform angle distance to each other. A central electrode and external current...
6439762 Mainspring device and a winding protection structure  
A timepiece, whose hands move by mechanical energy of a mainspring transmitted through a wheel train, includes a winding-up portion for accumulating energy in the mainspring, an addition and...
6267004 Glide test head assembly with high take-off resolution  
A glide test head assembly optimized for glide avalanche testing. The glide test head assembly of the present invention includes air bearing surfaces formed with a negative crown, or slightly...
6195228 Thin, horizontal-plane hall sensors for read-heads in magnetic recording  
Thin, horizontal-plane Hall sensors for read-head in magnetic recordings and methods for fabricating the sensor provide a novel sensor exhibiting high sensitivity and high spatial resolution.
5657189 Hall-effect magnetic sensor and a thin-film magnetic head using such a hall-effect magnetic sensor  
A thin film magnetic head includes a layered semiconductor body formed of a quantum well layer sandwiched by first and second barrier layers, wherein at least one of the first and second barrier...
5652445 Hybrid hall effect device and method of operation  
A modified Hall Effect device can be used as a memory element for the nonvolatile storage of digital information. The novel device includes a ferromagnetic layer that covers a portion of a Hall...
5577020 Magneto-optical disc with intermediate film layer between a recording film and a dielectric film  
A magneto-optical disc is fabricated by forming a first dielectric film, a recording film of a rare earth element-transition element alloy, and a second dielectric film on a transparent substrate...
5543988 Hall sensor with high spatial resolution in two directions concurrently  
A magnetic sensor, memory, and magnetic imager has been described for sensing a magnetic field in two directions concurrently incorporating a bar of semiconductor material having a rectangular...
5521500 Thin-film magnetic field detector having transverse current and voltage paths intersecting in a common plane  
A magnetic field sensor having a planar element made of a material formed by crystalline magnetoresistive thin layers with an anisotropy of resistivity in the planar element also having, in the...
5266409 Hydrogenated carbon compositions  
A composition of matter having an atomic density between that of pure diamond and at least 0.18 g-atoms per cubic centimeter and the formula: C 1 -z-w Si z A w [H 1 -x F x ] y where:...
5257151 Disc-drive with a rim-motor  
A disk/file for magnetic recording having overall dimensions of one quarter inch thick by about the size of a standard credit card with pin connectors for connecting into a receptacle such as for...
5251082 Miniaturized disk file pluggable into a card terminal  
A disk/file for magnetic recording having overall dimensions of one quarter inch thick by about the size of a standard credit card with pin connectors for connecting into a receptacle such as for...
5166849 Horizontal magnetic head with Hall effect and its embodiment method  
Horizontal magnetic head with Hall effect and including a magnetic circuit composed of a first horizontal polar piece (42) and a second horizontal polar piece (98, 100) separated into two sections...
5136239 Apparatus for measuring flux and other hysteretic properties in thin film recording discs  
Apparatus for measuring hysteretic properties of thin film recording disks is provided which comprises a magnetic field generator for magnetizing a spot on a piece of magnetic material to be...
5093753 Magnetic reading head using the hall effect  
Disclosed is a magnetic reading head using the Hall effect. In this head, the active element comprises a substrate on which the following are epitaxially grown: a layer of a semiconductor material...
5089334 Flux spreading thin film magnetic devices  
A method of flux conduction comprising providing a structure with anisotropy not purely in the transverse in-plane direction such that flux spreading into the transverse in-plane direction can...
4935832 Recording heads with side shields  
Side shields are provided adjacent to the magnetic poles of recording heads. The side shields are used for read and write operations for both longitudinal and vertical recording. During read, the...
4907113 Three-pole magnetic recording head  
The head includes a read pole disposed between a pair of write poles spaced apart to form a gap therebetween. The read pole conducts flux to a flux sensor that is located away from the gap. The...
4828966 Method for producing hall effect sensor for magnetic recording head  
A method of forming a Hall effect sensor for a magnetic recording head including the steps of providing a single crystal substrate having a chemically dissimilar single crystal film thereon,...
4772929 Hall sensor with integrated pole pieces  
A Hall element is formed in one surface of a silicon die. A trench is etched away in the opposite die surface in a region adjacent the Hall element. An insulating silicon dioxide is grown on both...
4736122 Read head for Wiegand wire  
A read head for a Wiegand wire has an E-core with a pick-up coil for the "1" bit wound on one outer leg and a separate pick-up coil for the "0" bit wound on a second outer leg. The E-core is...
4593209 Read head for Wiegand Wire  
A read head for a Wiegand Wire has a low reluctance core on which a pick-up coil is wound. The Wiegand Wires are passed over a face of the core and coil and switch state directly over the core and...
4577250 Hall effect magnetic head  
A Hall effect magnetic head performs predetermined operations such as recording, reproducing and erasing of data on a recording medium which is capable of magnetically recording data therein. The...
4568906 Sensor having a magnetic field-sensitive element with accurately defined weight and thickness dimensions in the nanometer range  
A sensor suitable for measuring magnetic field gradients spanning very small regions has a magnetic field-sensitive element (37, 42) with a very accurately defined height and thickness (even into...
4420781 Magnetic head with an amorphous Hall element  
Disclosed is a magnetic head comprising a support member having a plane faced by a magnetic recording medium; an electromagnetic converter mounted on the support member, and provided with an...
4400752 Magneto-electric transducer for a magnetic recording system and recording system comprising such a transducer  
The invention is directed to transducers for recording on (writing) and playback from (reading) a magnetizable support medium. A single transducer (head) provides both record and playback...
4393427 Multichannel magnetic head  
A multichannel magnetic head has magnetic circuits for respective channels, each positioned to traverse a magnetic flux to be detected and a Hall element disposed in the magnetic circuits and used...
4392166 Magnetoresistance effect type head  
A magnetoresistance effect type head or an MR head which includes a main portion further having a casing with a recess at its one surface, for providing a bonding surface in the casing so as to be...
4388661 Multichannel magnetic head and a manufacturing method therefor  
A multichannel magnetic head has a Hall element which is disposed in a magnetic circuit which is traversed by a magnetic flux to be detected and which is used as magnetic/electric converting means....
RE31211 Magnetically coded identification card  
An identification card, comprising several laminated layers, one of which is of material capable of being magnetized, has 350 spots on it, each of which is capable of having one portion of the spot...
4371905 High resolution hall effect read head  
A differential Hall effect magnetic read head exhibiting improved resolution. The head includes dual Hall elements in which the elements are oriented so that their major surface is perpendicular to...
4320428 Multitrack thin-film magnetic head with stacked electric leads  
Elimination of cross talk in an array of integrated magnetic transducing heads by not arranging the electric input and output leads to which the individual transducing elements are connected in one...
4275428 Multitrack magnetic reading head  
An integrated, multitrack, magnetic reading head in which a Hall effect or magneto-resistive material strip is deposited on a silicon substrate. The voltages produced in this strip are sampled by a...
4253017 Magnetically coded identification card  
An identification card, comprising several laminated layers, one of which is of material capable of being magnetized, has 350 spots on it, each of which is capable of having one portion of the spot...
4218659 Amplifier circuit for a hall-effect head  
A Hall-effect element is connected at one Hall current terminal to ground and at the other Hall current terminal to a DC voltage application circuit. Two Hall voltage terminals of the Hall-effect...
4213039 Dynamic card reader  
A dynamic card reader adapted for use in reading information magnetically recorded on a card in two rows or tracks parallel to the longer dimension of the card. The information is read as the card...
4186481 Method for fabrication of rear chip for hall effect magnetic head  
A method for fabricating a rear core for the magnetic circuit of a Hall effect magnetic head is disclosed. The bottom size of the rear core protrusion is made substantially equal to the size of a...
4179719 Thin film magnetic head  
A magnetic head for reading out the state of magnetization recorded on a magnetic recording medium, in which the magnetic head comprises a substrate of insulating material, an amorphous magnetic...
4155106 Magnetic head using a semiconductor element  
A magnetic head having one or more magneto-electric converting elements, such as Hall elements, and comprising plural leads which are used, when the magnetic head is manufactured, for measuring the...
3987485 Magnetic head with thin film components  
A flux sensitive magnetic head is disclosed which comprises conductive electrodes formed contiguous to the principal surface of a semiconductor substrate at a predetermined spacing, the electrodes...
3943570 Semiconductor magnetic head  
A semiconductor magnetic head in which a polycrystal thin film of a semiconductor material containing at least a crystal particle having a longitudinal diameter of at least 30 μm is employed as a...
3787638 HALL ELEMENT MAGNETIC HEAD HAVING INTEGRAL MEANS FOR DETECTING THE AMOUNT OF HEAD MATERIAL GROUND AWAY DURING A MACHINE OPERATION  
A magnetic head having one or more magneto-electric converting elements, for example, a Hall element, comprises one or more leads which are used, when the magnetic head is manufactured, for...
3715522 MULTI-TRACK MAGNETIC HALL HEAD  
A multi-track magnetic head comprising a plurality of three-terminal T-type Hall elements each having one Hall potential terminal and two current terminals provided at both ends thereof, said Hall...
3710360 HALL GENERATOR SYSTEM FOR READ-OUT OF MAGNETIZED INFORMATION CARRIERS WITH SEVERAL CODE POSITIONS  
A system for reading magnetized information carriers with several code positions comprises a number of Hall generators, a signal input circuit with a capacitor which has a discharge circuit...
Matches 1 - 50 out of 98 1 2 >