Patent application number | Description | Published |
20080304184 | WRITE TRANSDUCER AND SYSTEM IMPLEMENTING SAME - A magnetic, head in one embodiment includes a substrate; a write transducer; leads coupled to the write transducer; and a resistor coupled between one of the leads and the substrate or a common line. A magnetic storage system in another embodiment includes a cable having a characteristic impedance associated with a pair of conductors; a write signal generator coupled to the pair of conductors; at least one first device coupled to the cable in series with the write signal generator and at least one of the cable conductors, the at least one first device providing a first impedance; at least one second device providing a second impedance and coupled to a second end of the cable in series with at least one of the cable conductors and the first device; and a head having a write transducer coupled to the at least one second device. | 12-11-2008 |
20090316291 | TANDEM MAGNETIC WRITER - A magnetic head in one embodiment comprises a pole; a first write gap in the pole; a first coil for generating a magnetic flux across the first write gap; a second write gap in the pole having at least a portion thereof aligned with the first write gap in a direction parallel to a direction of media travel thereover; and a second coil for generating a magnetic flux across the second write gap, the second coil being addressable independently of the first coil. A method in one embodiment comprises forming a first write coil; forming a first write gap; forming a second write gap having at least a portion thereof aligned with the first write gap in a direction parallel to a direction of media travel thereover; forming a second coil for generating a magnetic flux across the second write gap, the second coil being addressable independently of the first coil; and forming one or more write poles, wherein a write pole region adjacent the first and second write gaps is formed concurrently. | 12-24-2009 |
20110047785 | METHODS FOR FABRICATING MAGNETIC TRANSDUCERS USING POST-DEPOSITION TILTING - In one general embodiment, a method is provided for fabricating magnetic structures using post-deposition tilting. A thin film magnetic transducer structure is formed on a substantially planar portion of a substrate such that a plane of deposition of the thin film transducer structure is substantially parallel to a plane of the substrate. Additionally, the thin film transducer structure is caused to tilt at an angle relative to the plane of the substrate. The thin film transducer is fixed at the angle after being tilted. | 03-03-2011 |
20110051284 | SYSTEMS AND METHODS FOR FABRICATING MAGNETIC WRITER STRUCTURES USING POST-DEPOSITION TILTING - A method according to one embodiment includes forming a first portion of a thin film writer structure on a substantially planar portion of a substrate such that planes of deposition of the first portion of the writer structure are substantially parallel to a plane of the substrate; forming a portion of a write gap of the writer structure at an angle of greater than 0° relative to the substantially planar portion of the substrate; and causing the writer structure to tilt at an angle relative to the plane of the substrate such that a plane of deposition of the write gap is oriented about perpendicular to a final media-facing surface of the writer structure. A system according to one embodiment includes a first portion comprising at least a portion of a coil structure and at least a portion of a magnetic yoke, the first portion being oriented at an angle of greater than 0° and less than 90° relative to a substantially planar portion of an underlying substrate; a first pole; a second pole; and a write gap, a portion of the write gap having a plane of deposition oriented about perpendicular to a final media-facing surface of the write gap. | 03-03-2011 |
20110058271 | SYSTEMS AND METHODS FOR REDUCING CROSSTALK BETWEEN ADJACENT WRITERS - In one general embodiment, a recording system controller includes a controller controlling a timing of flux switching of adjacent pairs of writers such that the writers in a given pair do not switch substantially concurrently, and reducing a current of one of the writers in the pair while the adjacent writer is writing a transition. In another general embodiment, a recording system controller includes a controller controlling a timing of pulse writing of adjacent pairs of writers such that the writers in a given pair do not pulse substantially concurrently. In yet another general embodiment, a method includes controlling a timing of pulse writing or flux switching of adjacent pairs of writers such that the writers in a given pair do not pulse or switch substantially concurrently. | 03-10-2011 |
20110085265 | MAGNETICALLY SHIELDED WRITE TRANSDUCERS - A magnetic head according to one embodiment includes at least two write transducers for writing to a magnetic medium; and a shield structure having at least two magnetically connected shields which at least partially cover two opposite sides of the writer. A magnetic head according to another embodiment includes at least two write transducers for writing to a magnetic medium, the at least two write transducers being positioned adjacent each other and aligned along a line; and a shield structure having shields adjacent at least three sides of each of the at least two write transducers, the shields being formed of a magnetically permeable material. Additional devices, systems, and methods are also presented. | 04-14-2011 |
20110102116 | MAGNETIC WRITER HAVING MULTIPLE GAPS WITH MORE UNIFORM MAGNETIC FIELDS ACROSS THE GAPS - A magnetic device according to one embodiment includes a source of flux; a magnetic pole coupled to the source of flux, the magnetic pole having two or more gaps; and a low reluctance path positioned towards at least one of the gaps and not positioned towards at least one other of the gaps for affecting a magnetic field formed at the at least one of the gaps when the source of flux is generating flux. Other disclosed embodiments include devices having coil turns with a non-uniform placement in the magnetic yoke for altering a magnetic field formed at the at least one of the gaps during writing. In further embodiments, a geometry of the magnetic pole near or at one of the gaps is different than a geometry of the magnetic pole near or at another of the gaps to help equalize fields formed at the gaps when the source of flux is generating flux. | 05-05-2011 |
20110109988 | SYSTEMS AND METHODS FOR COMPENSATING FOR CROSSTALK BETWEEN NEARBY WRITERS - A recording system controller according to one embodiment includes a controller capable of selecting a level of a current or voltage applied to a first writer during the creation of a magnetic transition based on a current in at least one nearby writer. A recording system controller according to another embodiment includes a controller capable of selecting a timing of a current change applied to a first writer based on a current in at least one nearby writer for compensating for an effect of crosstalk from the at least one nearby writer. A method according to yet another embodiment includes selecting a level of a current or voltage applied to a first writer or selecting a timing of a current change applied to the first writer based on a current in at least one nearby writer for compensating for an effect of crosstalk from the at least one nearby writer. | 05-12-2011 |
20110109998 | RECORDING HEAD WITH TILTED ORIENTATION - In one embodiment, a read sensor for a recording head for a magnetic media storage system, has first and second shields, and a magneto-resistive sensor disposed between and shielded by the first and second shields in which the sensing axis of the sensor is tilted with respect to the recording surface of the head. In one embodiment, the sensing axis is oriented at an angle between 10 and 60 degrees with respect to the normal of the recording surface. Other embodiments are described and claimed. | 05-12-2011 |
20110273796 | Magnetic Write Head with Flux Diverting Structure - A magnetic write head with a flux diverting structure for diverting stray flux received from an external source. The write head includes a yoke with two poles and a non-magnetic gap formed there between, and functions to write data to a magnetic storage medium. The flux diverting structure is proximate to the first pole and has a magnetic connection toward the back of the structure, and a non-magnetic separation toward the front of the structure. The flux diverting structure is comprised of a magnetic permeable material such that stray flux is diverted away from portions of the write head. | 11-10-2011 |
20110273797 | Write Head Having a Device for Reducing the Effects of Stray Flux - A magnetic write head with a flux opposing structure for opposing stray flux from an external source. The write head includes a yoke with two poles and a non-magnetic gap formed there between, and functions to write data to a magnetic storage medium. The flux opposing structure is proximate to the first pole and has a separation from an exterior surface of the first pole. A current applied to the secondary coil to create a secondary flux field with an opposite polarity of a first magnetic flux. The secondary flux field opposes the stray flux associated with the primary flux field of the magnetic write head and/or a neighboring magnetic write head. | 11-10-2011 |
20120206832 | TAPE HEAD ACTUATOR - An assembly according to one embodiment includes a first module and a second module each having multiple transducers, wherein the first module is movable relative to the second module; a tape dimensional stability compensation mechanism for tilting the modules to control a transducer pitch presented to a tape; and an actuator adapted to exert a force on both modules for causing the relative movement of the first module with respect to the second module for aligning the transducers of the first module with the transducers of the second module in a direction of tape travel thereacross. | 08-16-2012 |
20120260496 | METHODS FOR FABRICATING MAGNETIC TRANSDUCERS USING POST-DEPOSITION TILTING - In one general embodiment, a method is provided for fabricating magnetic structures using post-deposition tilting. A thin film magnetic transducer structure is formed on a substantially planar portion of a substrate such that a plane of deposition of the thin film transducer structure is substantially parallel to a plane of the substrate. Additionally, the thin film transducer structure is caused to tilt at an angle relative to the plane of the substrate. The thin film transducer is fixed at the angle after being tilted. | 10-18-2012 |
20120287527 | HYBRID TAPE HEAD ASSEMBLY AND DRIVE FOR ACCEPTING THE SAME - A head assembly according to one embodiment includes at least one module having magnetic transducers for reading and/or writing to a magnetic tape; electronics electrically coupled to the transducers, the electronics comprising at least one of amplifiers; bias circuitry; write drivers; write resistors; a memory device; and a chip with at least one of identification information about the head assembly, customization data, and firmware; and a connector for detachably interfacing to a drive having a head region for receiving the head assembly. A magnetic tape drive according to one embodiment includes a head region for removably receiving a head assembly; a mechanical interface to facilitate alignment of the head assembly when inserted in the head region; and a connector for detachably interfacing with the head assembly. Additional systems and methods are also presented. | 11-15-2012 |
20120323934 | Rendering Tape File System Information in a Graphical User Interface - A mechanism is provided for rendering tape file system information. The mechanism obtains a list of one or more files residing on a tape in the tape file system from a file directory. The mechanism obtains location information associated with at least one file of the one or more files. Finally, the mechanism renders a representation of the location information with the at least one file. | 12-20-2012 |
20120327532 | TANDEM MAGNETIC WRITER - A magnetic head in one embodiment includes a pole; a first write gap in the pole; a first coil for generating a magnetic flux across the first write gap; a second write gap in the pole having at least a portion thereof aligned with the first write gap in a direction parallel to a direction of media travel thereover; and a second coil for generating a magnetic flux across the second write gap, the second coil being addressable independently of the first coil. A method in one embodiment includes forming a first write coil; forming a first write gap; forming a second write gap; forming a second coil for generating a magnetic flux across the second write gap, the second coil being addressable independently of the first coil; and forming one or more write poles, wherein a write pole region adjacent the first and second write gaps is formed concurrently. | 12-27-2012 |
20130052340 | METHODS FOR FABRICATING MAGNETIC WRITER STRUCTURES USING POST-DEPOSITION TILTING - A method according to one embodiment includes forming a first portion of a thin film writer structure on a substantially planar portion of a substrate such that planes of deposition of the first portion of the writer structure are substantially parallel to a plane of the substrate; forming a portion of a write gap of the writer structure at an angle of greater than 0° relative to the substantially planar portion of the substrate; and causing the writer structure to tilt at an angle relative to the plane of the substrate such that a plane of deposition of the write gap is oriented about perpendicular to a final media-facing surface of the writer structure. | 02-28-2013 |
20130086799 | METHOD OF MAKING MAGNETICALLY SHIELDED WRITE TRANSDUCERS - A method according to one embodiment includes forming a lower shield of a shield structure; forming a portion of a magnetic yoke for each of at least two write transducers above the lower shield of the shield structure; and forming an upper shield of the shield structure above the portions of the yokes of each of two of the at least two write transducers, the shields being formed of a magnetically permeable material, wherein the upper and lower shields are magnetically connected. | 04-11-2013 |
20130106552 | INDUCTOR WITH MULTIPLE POLYMERIC LAYERS | 05-02-2013 |
20130120872 | MAGNETIC WRITER HAVING MULTIPLE GAPS WITH MORE UNIFORM MAGNETIC FIELDS ACROSS THE GAPS - A magnetic device according to one embodiment includes a source of flux; a magnetic pole coupled to the source of flux, the magnetic pole having two or more gaps; and a low reluctance path positioned towards at least one of the gaps and not positioned towards at least one other of the gaps for affecting a magnetic field formed at the at least one of the gaps when the source of flux is generating flux. Other disclosed embodiments include devices having coil turns with a non-uniform placement in the magnetic yoke for altering a magnetic field formed at the at least one of the gaps during writing. In further embodiments, a geometry of the magnetic pole near or at one of the gaps is different than a geometry of the magnetic pole near or at another of the gaps to help equalize fields formed at the gaps when the source of flux is generating flux. | 05-16-2013 |
20130176095 | INDUCTOR WITH LAMINATED YOKE - A thin film inductor having yokes, one or more of which is laminated, and one or more conductors passing between the yokes. The laminated yoke or yokes help reduce eddy currents and/or hysteresis losses. | 07-11-2013 |
20130314192 | INDUCTOR WITH STACKED CONDUCTORS - A thin film coupled inductor, a thin film spiral inductor, and a system that includes an electronic device and a power supply or power converter incorporating one or more such inductors. A thin film coupled inductor includes a wafer substrate; a bottom yoke comprising a magnetic material above the wafer substrate; a first insulating layer above the bottom yoke; a first conductor above the bottom yoke and separated therefrom by the first insulating layer; a second insulating layer above the first conductor; a second conductor above the second insulating layer; a third insulating layer above the second conductor; and a non-planar top yoke above the third insulating layer, the top yoke comprising a magnetic material. | 11-28-2013 |
20140059842 | METHOD OF FORMING MAGNETIC RECORDING HEAD HAVING PROTECTED READER SENSORS AND NEAR ZERO RECESSION WRITER POLES - A method according to one embodiment includes applying a coating to a media facing side of a module, the module having first and second transducers of different magnetic transducer types positioned towards the media facing side of the module, wherein the different transducer types are selected from a group consisting of data reader transducers, servo reader transducers, write transducers, piggyback read-write transducers and merged read-write transducers; wherein the coating forms at least a portion of a first protection structure for protecting the first transducer; and wherein the second transducer has either no protection or is protected by a second protection structure that is different than the first protection structure. | 03-06-2014 |
20140063645 | MAGNETIC RECORDING HEAD HAVING PROTECTED READER SENSORS AND NEAR ZERO RECESSION WRITER POLES - A magnetic head according to one embodiment includes a module, the module having first and second transducers of different transducer types positioned towards a media facing side of the module, wherein the different transducer types are selected from a group consisting of data reader transducers, servo reader transducers, write transducers, piggyback read-write transducers and merged read-write transducers; a first protection structure for protecting the first transducer; and wherein the second transducer has either no protection or is protected by a second protection structure that is different than the first protection structure. | 03-06-2014 |
20140126078 | MAGNETIC WRITER HAVING MULTIPLE GAPS WITH MORE UNIFORM MAGNETIC FIELDS ACROSS THE GAPS - A magnetic device according to one embodiment includes a source of flux; a magnetic pole having two or more gaps; and a low reluctance path positioned towards at least one of the gaps and riot positioned towards at least one other of the gaps for affecting a magnetic field formed at the at least one of the gaps when the source of flux is generating flux. Other disclosed embodiments include devices having coil turns with a non-uniform placement in the magnetic yoke for altering a magnetic field formed at the at least one of the gaps during writing. In further embodiments, a geometry of the magnetic pole near or at one of the gaps is different than a geometry of the magnetic pole near or at another of the gaps to help equalize fields formed at the gaps when the source of flux is generating flux. | 05-08-2014 |
20140190003 | INDUCTOR WITH LAMINATED YOKE - A method for forming a thin film inductor having yokes, one or more of which is laminated, and one or more conductors passing between the yokes. The laminated yoke or yokes help reduce eddy currents and/or hysteresis losses. | 07-10-2014 |
20140216939 | LAMINATING MAGNETIC CORES FOR ON-CHIP MAGNETIC DEVICES - A laminating structure includes a first magnetic layer, a second magnetic layer, a first spacer disposed between the first and second magnetic layers and a second spacer disposed on the second magnetic layer. | 08-07-2014 |
20140216943 | LAMINATING MAGNETIC CORES FOR ON-CHIP MAGNETIC DEVICES - A laminating structure includes a first magnetic layer, a second magnetic layer, a first spacer disposed between the first and second magnetic layers and a second spacer disposed on the second magnetic layer. | 08-07-2014 |
20140320997 | MULTIPLE WRITERS WITH REDUCED CROSSTALK - A system according to one embodiment includes at least two write transducers for writing to a magnetic medium; and a low reluctance path from a first pole of a first of the write transducers to a second pole of a second of the write transducers. | 10-30-2014 |
20140327987 | MAGNETIC HEAD AND SYSTEM HAVING OFFSET ARRAYS - In one general embodiment, an apparatus includes at least two modules, each of the modules having an array of transducers, wherein the at least two modules are fixed relative to each other, wherein an axis of each array is defined between opposite ends thereof, wherein the axes of the arrays are oriented about parallel to each other, wherein the array of a first of the modules is offset from the array of a second of the modules in a first direction parallel to the axis of the array of the second module such that the transducers of the first module are about aligned with the transducers of the second module in an intended direction of tape travel thereacross; and a mechanism for orienting the modules about an axis orthogonal to the plane in which the arrays reside to control a transducer pitch presented to a tape. | 11-06-2014 |
20150061815 | PLANAR INDUCTORS WITH CLOSED MAGNETIC LOOPS - A planar closed-magnetic-loop inductor and a method of fabricating the inductor are described. The inductor includes a first material comprising a cross-sectional shape including at least four segments, at least one of the at least four segments including a first edge and a second edge on opposite sides of an axial line through the at least one of the at least four segments. The first edge and the second edge are not parallel. | 03-05-2015 |
20150064362 | PLANAR INDUCTORS WITH CLOSED MAGNETIC LOOPS - A planar closed-magnetic-loop inductor and a method of fabricating the inductor are described. The inductor includes a first material comprising a cross-sectional shape including at least four segments, at least one of the at least four segments including a first edge and a second edge on opposite sides of an axial line through the at least one of the at least four segments. The first edge and the second edge are not parallel. | 03-05-2015 |