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| Patent # | Description |
|---|---|
| US-6,798,627 |
Engine generator set systems and methods providing load power fault
protection An engine-generator set includes a load power fault protector circuit that detects when the power delivered to the load reaches a predetermined maximum power... |
| US-6,798,626 |
Magnetoresistive effect element having a ferromagnetic tunnel junction film
with an oxide or nitride of a... A magnetoresistive effect element which is easy to manufacture and in which a sense current is prevented from bypassing a barrier layer is provided. Also... |
| US-6,798,625 |
Spin-valve magnetoresistance sensor and thin-film magnetic head The present invention provides a spin-valve magnetoresistance sensor in which are formed, on top of the substrate, free layers, and pinned layers, enclosing a... |
| US-6,798,624 |
Magnetization sensor for sensing the write field characteristics of a
perpendicular or longitudinal recording head A magnetization sensor for sensing write field characteristic of a perpendicular or longitudinal recording head such as may be used with a disc drive, and a... |
| US-6,798,623 |
Biased CPP sensor using spin-momentum transfer Disclosed is a magnetoresistive magnetic field sensor wherein the sense current flows perpendicular to the plane of the layers of the sensor. The sensor is... |
| US-6,798,622 |
Magnetoresistive (MR) sensor element with sunken lead structure A method for forming a magnetoresistive (MR) sensor element. There is first provided a substrate. There is then formed over the substrate a seed layer. There is... |
| US-6,798,621 |
Shield electrical connections for tunnel valve sensors A magnetic head includes a tunnel valve sensor, a first shield coupled to a first end of the tunnel valve sensor, and a second shield coupled to a second end of... |
| US-6,798,620 |
Magneto-resistive element, magnetic head, and magnetic recording and
reproduction apparatus A magnetic head including a magnetic substrate for operating as a first electrode, a multi-layer film formed on a portion of the surface of the magnetic... |
| US-6,798,618 |
Head suspension for disk drive A head suspension for a disk drive has support plate means (3, 7) serving as a carriage arm and a load beam (5). The load beam consists of a rigid part (13) and... |
| US-6,798,617 |
Cleaning tape for magnetic head system with magnetoresistance effect head A cleaning tape for a magnetic head system having a magnetoresistance effect head as a reproducing head, comprising a nonmagnetic support, and a cleaning layer... |
| US-6,798,616 |
Write head architecture for improved manufacturability A disk drive write head having in consecutive layers a bottom pole, a write gap layer, a first insulation layer, a coil, a second insulation layer having an... |
| US-6,798,615 |
Perpendicular recording head with return poles which reduce flux antenna
effect A perpendicular magnetic recording head includes a main write pole and multiple return poles. The size of each return pole is controlled in order to provide... |
| US-6,798,614 |
Releasable disc clamping assembly A disc positioning system for releasably securing a disc stack array on a spindle hub in a multi-disc writer system. The system includes a disc clamp with an... |
| US-6,798,613 |
Method of correcting Z-height errors during assembly of a hard disk drive A disk drive includes a drive housing, an actuator arm mounted to the drive housing, a head suspension assembly secured to the actuator arm, a spindle secured to... |
| US-6,798,612 |
Power strip distribution system and method for an automated robotic device
in a data storage system A system and method for distributing electrical power to an automated robotic device for transporting media cartridges in a data storage library. The system and... |
| US-6,798,611 |
Disk storage system employing a discrete-time sliding mode controller for
servo control A discrete-time sliding mode controller (SMC) controls the motion of a read head actuated over a disk storage medium during tracking operations. The discret-time... |
| US-6,798,610 |
Disk drive with self servo writing capability The present invention is directed to utilizing the capabilities of multi-stage actuators in disk drives to do self servo writing on the disk surfaces, thereby... |
| US-6,798,609 |
Magnetic microactuator with capacitive position sensor A disc drive system includes a recording disc rotatable about an axis, a slider supporting a transducing head for transducing data with the disc, and a... |
| US-6,798,608 |
Active detection and acquisition of a servo track subject to lateral motion Initially, from an off-track position at a known side of, and displaced from, a servo track pattern of a tape subject to lateral movement, servo loop logic slews... |
| US-6,798,607 |
Defined signal injection to calibrate servo index positions employing an
independent position sensor Calibration of magnetic tape servo index positions, which are laterally offset from edges and measured by ratios of dissimilar servo signals. A defined signal is... |
| US-6,798,606 |
Position error signal linearization calibration Non-linearity in a position error signal (PES) for a data storage device is precisely characterized during a calibration phase in the manufacturing process. From... |
| US-6,798,605 |
Magnetic disk apparatus and method of controlling the same A magnetic disk apparatus includes a rotation mechanism for driving a magnetic disk, a magnetic head slider being floated in close proximity to a surface of the... |
| US-6,798,604 |
Controller circuit connectable to an actuator designed to position a head
in a recording medium drive according... The controller circuit is designed to generate the positioning control signal based on the positional deviation of the head from a target recording track on a... |
| US-6,798,603 |
Disk drive unlatching an actuator arm at a first spindle speed during a
first spin-up mode and a second spindle... A disk drive is disclosed comprising a disk, a spindle motor for rotating the disk, an actuator arm, and a head coupled to the actuator arm. While powered down... |
| US-6,798,602 |
Window based directory for magnetic tape Directories are provided for data recorded on a magnetic tape in the form of files having data demarcation signals, such as filemarks. Data storage logic... |
| US-6,798,601 |
Impact detecting circuit, impact detecting apparatus, and recording and
reproducing apparatus including same First and second integrating circuits are connected to both terminals of an impact sensor, and a difference between integration outputs of the integrating... |
| US-6,798,600 |
Recording medium reproducing apparatus with retractable lid covering medium
insertion port A recording medium reproducing apparatus includes a mechanical deck, a lid body, a first moving member, a second moving member, and a synchronization member. The... |
| US-6,798,599 |
Disc storage system employing non-volatile magnetoresistive random access
memory An apparatus and method for caching data in a disc storage system are provided. The disc storage system includes a host computer interface adapted to couple to a... |
| US-6,798,598 |
Method for controlling write current to a write head during data write on a
hard disk A method for controlling write current to a write head during data write on a hard disk drive is disclosed. A direct access storage device includes a rotating... |
| US-6,798,597 |
Write channel having preamplifier and non-uniform transmission line A high speed data transmission channel, preferably embodied in a circuit for writing to a read channel for a hard disk drive, is provided. The channel includes a... |
| US-6,798,596 |
Method and apparatus for determining data field fill-in frequency at servo
pack writing A guardband portion is written on a disc surface in a disc drive. A predetermined data pattern is written on at least one data track adjacent to the guardband... |
| US-6,798,595 |
Magnetic recording playback device In a magnetic recording playback device, since minimum redundant bytes required for satisfying a target error rate are added, the addition of more redundant... |
| US-6,798,594 |
Position sensing system for a disc drive using micro-servo sectors and
side-by-side R/W recording elements A transducer position sensing system in a disc drive to take frequent data measurements from micro-servo sectors on the disc and to interpret the information to... |
| US-6,798,593 |
Method and apparatus for reproducing data and method and apparatus for
recording and/or reproducing data A magnetic recording and/or reproducing apparatus which achieves high performance encoding and high efficiency decoding to lower the decoding error rate. A... |
| US-6,798,592 |
Method for reducing position error signal in a disk drive A method and an apparatus for reducing position error signal in a disk drive, which has an actuator and a magnetic medium, write the servo tracks with a servo... |
| US-6,798,591 |
Reference circuit for write driver circuit with programmable write current,
overshoot duration and overshoot... A write current circuit (40) adapted to drive a thin film write head (L0) of a mass media information storage device. The write current circuit includes a write... |
| US-6,798,590 |
Method for contact magnetic transfer of servo pattern to hard magnetic
recording disk A contact magnetic transfer method for forming a pattern of magnetized servo regions in the magnetic recording layer of a rigid magnetic recording disk uses a... |
| US-6,798,589 |
Optical member with handling portion and method for manufacturing optical
member and method for mounting... A lens element 1 is formed by making use of an optical substrate, and includes a lens portion 2, an edge portion 6 in the form of a circular arc provided along... |
| US-6,798,588 |
Method for applying a scale to a carrier In a method for applying a scale (7) to a carrier (1,2), a material layer (11) is applied to the carrier in such a way that the change in length on account of... |
| US-6,798,587 |
Thermal imaging combination and method A thermal imaging instrument and method is disclosed for viewing hot spots within a normally enclosed cabinet, for example, a high voltage electrical power... |
| US-6,798,586 |
Corrector optic compensating spherical and coma aberrations generated by a
prism A corrector optic is provided, for use in a camera system that includes a thick prism in front of the focal plane. The corrector optic includes preferably two... |
| US-6,798,585 |
Reference lens for interferometer and interferometer that uses it A reference lens for an interferometer is constructed so that light transmitted by a partially reflecting reference spherical surface may be converged, toward a... |
| US-6,798,584 |
Lens apparatus for projection A lens apparatus for projection includes a plurality of lenses on an optical axis. A shading plate 11 for covering the peripheral portion of the lens to block... |
| US-6,798,583 |
Projection optical apparatus The invention provides a small-sized projection optical apparatus which uses a decentered prism as a projection optical system and in which some contrivances are... |
| US-6,798,582 |
Reduction gear mechanism A reduction gear mechanism includes at least first and second axes which extend parallel to each other; one of the first and second axes rotatably supports at... |
| US-6,798,581 |
Optical pickup method and apparatus for performing read and write
operations on recording media An optical pickup apparatus, in which the quantity of light incident to an aperture diaphragm of an objective lens and the "rim intensity (RI)" are maintained... |
| US-6,798,580 |
Projection type image display apparatus A projection type image display apparatus includes a light axis moving unit for moving a direction of a light from a light source substantially in parallel... |
| US-6,798,579 |
Real imaging system with reduced ghost imaging A real image display system includes a primary image source for projecting a primary image from the start of a primary light path to an end of the primary light... |
| US-6,798,578 |
Integrated display image intensifier assembly A system (S) for combining multi-spectral images of a scene includes a first detector (18) for transmitting a scene image in a first spectral band. A separate,... |
| US-6,798,577 |
Illumination apparatus with light shielding near an exit plane of an
optical pipe and projection exposure... An illumination apparatus includes an inner-surface reflecting type integrator, an optical system for directing a beam from a light source to a portion of... |
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