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Match Document Document Title
9042207 Magnetic recording laser diode control  
Controlling a laser diode involves activating a first current source in preparation for writing to a magnetic recording medium. The first current source applies a threshold current to a laser...
9036456 Optical device, magnetic head, manufacturing method, and near-field light device  
An near-field light device (100) is provided with: a first electrode layer (123) having a protruding portion (123a); a second electrode layer (121); and a light emitting layer (122), the...
9025420 Self-controlled laser pulsing for thermally assisted recording  
A method of storing data includes providing a write signal for a write head of a hard disk drive, generating a transition pulse signal derived from the write signal using a transition pulse...
9025422 Plasmon generator having flare shaped section  
The present invention relates to a plasmon generator, in which a surface plasmon is excited by application of light. The plasmon generator extends along one direction. The plasmon generator...
9007878 Glass for magnetic recording medium substrate and usage thereof  
An aspect of the present invention relates to glass for a magnetic recording medium substrate, which includes essential components in the form of SiO2, Li2O, Na2O, and one or more alkaline earth...
8982494 Head gimbal assembly and data recording and reproducing apparatus having the same  
A head gimbal assembly has a suspension configured to extend along a surface of a recording medium and to bend and deform in a thickness direction of the recording medium. A slider is provided on...
8982678 Multi-layer recording lamination for solid immersion mirror servo track writing  
A data storage media may have at least a multi-layer recording lamination with a predetermined coercivity. The multi-layer recording lamination can be configured to record at least one servo...
8976633 Data storage device calibrating fly height actuator based on laser power for heat assisted magnetic recording  
A data storage device is disclosed comprising a disk, a head comprising a laser configured to heat the disk while writing data to the disk, and a fly height actuator (FHA) configured to actuate...
8971159 Light delivery apparatus  
A light delivery system in a slider includes a channel waveguide, a mode-index refractive surface, a solid immersion mirror, and a near field transducer. The mode-index refractive surface shapes...
8953421 Submount layers configured to enhance absorption of light proximate a bonding feature  
An apparatus includes a submount having a mounting surface and a top surface opposite the mounting surface. A slider has a bonding feature that interfaces with the mounting surface of the...
8908480 Method and system for providing an energy assisted magnetic recording disk drive using a pulsed laser light  
A method and system provide an energy assisted magnetic recording (EAMR) disk drive. The EAMR disk drive includes a media, at least one laser coupled with the slider, at least one EAMR head on the...
8891340 Heat source management in data storage device  
An apparatus and associated method is presently disclosed for a control circuitry capable of managing a heat source used in data storage applications. Various embodiments of the present invention...
8877358 Method and system for providing a laser cavity for an energy assisted magnetic recording head  
A method for providing a capping layer configured for an energy assisted magnetic recording (EAMR) head including at least one slider. The method comprises etching a substrate having a top surface...
8854928 Differential laser diode driver apparatus and systems  
Apparatus and systems create differential drive signals suitable for HAMR data recording. A laser diode differential driver provides heating current pulses at a time Φ1. The pulses energize a...
8824248 Glass for magnetic recording medium substrate and usage thereof  
An aspect of the present invention relates to glass for a magnetic recording medium substrate, which includes essential components in the form of SiO2, Li2O, Na2O, and one or more alkaline earth...
8787124 Systems and methods for extracting Curie temperature distribution in heat assisted magnetic recording media  
Systems and methods for extracting a Curie temperature distribution in a heat assisted magnetic recording medium are provided. One such method involves saturating a magnetic recording medium by...
8787126 Waveguide with blocking layer  
An apparatus includes a write pole, a waveguide adjacent to the write pole, the waveguide having a truncated end, and a blocking layer positioned adjacent the truncated end and extending from one...
8787127 Near-field light generating element, method of manufacturing near-field light generating element, near-field light head, method of manufacturing near-field light head, and information recording and playback device  
A near-field light generating element has a core that propagates light flux from a light incident side to a light emission side while focusing the propagating light flux. A near-field light...
8760977 Systems and methods for data write loopback based timing control  
Systems and methods related to writing data to a storage medium. In some cases, a heat assisted loopback circuit is used that includes: a read circuit, a magnetic write circuit, a heat write...
8687469 Method for manufacturing an electronic device including a light absorption layer  
A method of manufacturing an electronic device includes a first bonding step of bonding an electronic component and a first member together via a first bonding layer and a second bonding step of...
8675455 Systems and methods for controlling light phase difference in interferometric waveguides at near field transducers  
Systems and methods for controlling light phase difference in interferometric waveguides at near field transducers by selectively heating the light source are provided. One such system for...
8675456 Method of writing data with binary anisotropy media  
A method of writing binary data comprising (i) heating a magnetic microstructure from an initial temperature to an above-ambient temperature that is not less than a transition temperature for the...
8670294 Systems and methods for increasing media absorption efficiency using interferometric waveguides  
Systems and methods for increasing media absorption efficiency using interferometric waveguides in information storage devices are described. One such system for an interferometric waveguide...
8665690 System for providing an energy assisted magnetic recording head having a leading face-mounted laser  
A system for providing energy assisted magnetic recording (EAMR) heads using a substrate is described. The substrate has front and back sides and apertures therein. The apertures are through-holes...
8619511 Heat-assisted magnetic recording head with optical spot-size converter fabricated in 2-dimensional waveguide  
In one embodiment, a magnetic recording head includes a spot size converter having a tapered portion, the tapered portion having at least one of a width and thickness that increases in a direction...
8593913 Magnetic recording device, controller thereof, and magnetic recording method  
According to one embodiment, a magnetic recording device includes: a magnetic recording medium provided with data regions for data recording; a light output module which outputs an optical signal...
8588036 Optical device including interlayer  
A device including a waveguide, the waveguide having a first portion where energy having a wavelength, λ, enters and a second portion where the energy exits, the waveguide including a core layer...
8582416 Heat-assisted magnetic recording medium and magnetic recording and reading apparatus  
The heat-assisted magnetic recording medium of the present invention has a substrate, an under layer formed on the substrate, and a magnetic layer formed on the under layer, in which the magnetic...
8576672 Heat sink layer  
A layer configured for use in a magnetic stack has electrical resistivity greater than about 5×10−8 Ωm and thermal conductivity greater than about 1 W/mK. In some arrangements, the magnetic stack...
8537645 Near field light generating element, thermally assisted magnetic head, thermally assisted magnetic head device and thermally assisted magnetic recording/reproducing apparatus  
A near-field light generating element includes a plasmon generator, and the plasmon generator has a base plate and a protrusion. The protrusion protrudes from one side of the base plate, wherein...
8537644 Heat source management in data storage device  
An apparatus and associated method is presently disclosed for a control circuitry capable of managing a heat source used in data storage applications. Various embodiments of the present invention...
8526275 Systems and methods for dissipating heat from a near-field transducer in an energy assisted magnetic recording assembly  
Embodiments of the present invention are directed to a recording head for energy assisted magnetic recording. The recording head includes a near-field transducer (NFT) having a preselected shape...
8514671 Laser recess head gimbal assembly  
A slider may have a first surface on an air bearing surface (ABS) and a laser recess formed in a second surface of the slider, opposite the first surface. A laser can then be positioned in the...
8514672 Near-field transducer with thermal sensor and system for clocking write data in a patterned-media magnetic recording disk drive  
A near-field transducer (NFT) has a primary tip that concentrates the oscillating charge of the NFT onto a substrate, such as magnetic recording medium, to heat regions of the medium, and a...
8509037 Layered optical waveguide and near field transducer  
A waveguide extends away from a media-facing surface. The waveguide includes top and bottom cladding layers and a core disposed therebetween. The core includes a middle core layer and an outside...
8493820 Matched CTE drive  
A thermally compensated fluid dynamic bearing motor includes a stationary member and a rotatable member rotatable about the stationary member. A hub is coupled with the rotatable member and...
8472298 Optical information recording and reproducing apparatus and optical information recording method  
An optical information recording and reproducing apparatus includes an irradiation unit of a signal light beam and a reference light beam required for data recording, and a cure irradiation unit...
8465658 Method of forming main pole of thermally-assisted magnetic recording head  
In a method of forming a main pole, an initial accommodation layer is etched by RIE using a first etching mask having a first opening, whereby a groove is formed in the initial accommodation...
8424191 Method for manufacturing thermally-assisted magnetic recording head by semi-active alignment  
A method for manufacturing a thermally-assisted magnetic recording head is provided, in which joined are: a light source unit that includes a light source having a surface including a...
8379495 System, method and apparatus for internal polarization rotation for horizontal cavity, surface emitting laser beam for thermally assisted recording in disk drive  
A laser, such as a horizontal cavity surface emitting laser, with internal polarization rotation may be used in thermally assisted recording in hard disk drives. The desired polarization of the...
8345516 Magneto-optical switching device and method for switching a magnetizable medium  
The invention relates to a magneto-optical switching device for switching magnetization in a medium, comprising a magnetizable medium. According to the invention, a radiation system suited for...
8331204 Near-field light generating device, recording head, and recording device  
A near-field light generating device (10) which converts incident light into near-field light, includes: a metallic member (11) made of a metallic material; and a dielectric member (12) made of a...
8243558 Thermally assisted magnetic head, head gimbal assembly, and hard disk apparatus  
A thermally assisted magnetic head includes a main magnetic pole for writing and a near-field light generator provided near the main magnetic pole, the near-field light generator having a...
8218405 Head slider and disk drive  
Embodiments of the present invention provide a technique for projecting both a write element portion in writing and a read element portion in reading, and controlling a projecting distance of each...
8169731 Near-field light transducer comprising propagation edge with predetermined curvature radius  
Provided is a near-field light transducer with a propagation edge in which the generation of defects is suppressed. The transducer is formed of a Ag alloy and comprises an edge, the edge...
8144549 Head stack assembly and information recording apparatus  
An information recording apparatus includes a medium for recording information; a head slider including a device for writing the information onto the medium and a reflective surface for reflecting...
8134897 Current gain control system  
A current gain control system is described and comprises first and second gain blocks respectively associated with the first and second input channels, wherein first and second gain blocks...
8081542 Thermally-assisted recording (TAR) disk drive with patterned multilevel media and laser with power modulation  
A thermally-assisted recording (TAR) patterned-media magnetic recording disk drive has a perpendicular patterned-media disk with multilevel data islands and a laser capable of supplying multiple...
8077557 Multiple aperture VCSEL EAMR heads  
A magnetic recording device comprises a multi-aperture vertical cavity surface emitting laser (VCSEL) operably coupled to a magnetic recording head and a plurality of waveguides disposed in the...
8077556 Thermally assisted magnetic head, head gimbal assembly, and hard disk drive  
A thermally assisted magnetic head has a medium-facing surface facing a magnetic recording medium; a near-field light generator disposed on a light exit face in the medium-facing surface; a...

Matches 1 - 50 out of 149 1 2 3 >