http://www.freshpatents.com/Dynamic-magnetic-information-storage-or-retrieval-dtnewntc360.php USPTO Class 360 - Dynamic magnetic information storage or retrieval en-us Wed, 3 Jun 2009 14:38:28 -0700 1000 Wednesday Thursday Friday Saturday Sunday 141 31 http://www.freshpatents.com/index.php?rss=true http://www.freshpatents.com/images/freshpatentsnav_rss.gif http://www.freshpatents.com/Electrical-current-as-probe-for-modulation-at-head-disk-interface-dt20090528ptan20090135512.php Wed, 3 Jun 2009 14:38:28 -0700 A system and method for measuring the modulation between a magnetic head and a magnetic storage medium, such as a disk, is disclosed. A magnetic read/write head is positioned above a magnetic storage medium at a given flying height. The magnetic read/write head reads a signal from the magnetic storage... http://www.freshpatents.com/Magnetic-recording-medium-magnetic-storage-and-method-for-reproducing-information-from-magnetic-recording-medium-dt20090528ptan20090135513.php Wed, 3 Jun 2009 14:38:28 -0700 A magnetic recording medium includes a first magnetic layer; and a second magnetic layer formed on the first magnetic layer. The first magnetic layer and the second magnetic layer make exchange coupling therebetween and also, have their magnetizing direction in anti-parallel to one another. A net residual area magnetization of... http://www.freshpatents.com/Disk-apparatus-and-information-recording-disk-dt20090528ptan20090135515.php Wed, 3 Jun 2009 14:38:28 -0700 One aspect of the embodiments utilizes a disk apparatus employing a ramp loading method, which includes a ramp member having an overlapping portion with which a part of a disk having an information recording surface and a lateral side overlaps, and a groove is formed on the entire lateral side... http://www.freshpatents.com/Disk-drive-device-and-servo-control-method-thereof-dt20090528ptan20090135516.php Wed, 3 Jun 2009 14:38:28 -0700 Embodiments of the present invention help to perform appropriate servo control in response to detected vibration in a disk drive device having a vibration sensor. In an embodiment of the present invention, an HDD switches a correction servo mode to perform vibration correction in head positioning and a normal servo... http://www.freshpatents.com/Magnetic-disk-unit-and-manufacturing-method-thereof-dt20090528ptan20090135517.php Wed, 3 Jun 2009 14:38:28 -0700 Embodiments of the present invention relate to a method for manufacturing a magnetic disk unit, the method including a step of writing servo data into the magnetic disk while introducing a low-density gas having a lower density than air into the enclosure. In one embodiment, the magnetic disk unit is... http://www.freshpatents.com/Method-and-apparatus-for-reducing-coupled-hard-disk-drive-vibration-dt20090528ptan20090135514.php Wed, 3 Jun 2009 14:38:28 -0700 Some embodiments of the present invention provide a system that includes a first hard disk drive (HDD) and a second HDD. Within this system, the first HDD is coupled to the second HDD in a non-parallel configuration, which reduces rotational vibration transmitted between the first HDD and the second HDD.... http://www.freshpatents.com/Discrete-track-magnetic-media-with-domain-wall-pinning-sites-dt20090528ptan20090135518.php Wed, 3 Jun 2009 14:38:28 -0700 A magnetic recording medium with domain wall pinning sites including a substrate, a soft magnetic underlayer, and a magnetic recording layer overlying the soft magnetic underlayer. In one embodiment the magnetic recording layer has at least two grooves providing a track having first and second sidewalls formed by the grooves.... http://www.freshpatents.com/Magnetic-recording-medium-method-and-apparatus-for-manufacturing-magnetic-recording-apparatus-dt20090528ptan20090135519.php Wed, 3 Jun 2009 14:38:28 -0700 A magnetic recording medium includes a disk substrate, and recording cells arrayed on the disk substrate in a track direction, the recording cells includes a ferromagnetic pattern and a magnetic pattern formed on one of two sidewalls of the ferromagnetic pattern in the track direction and having a lower crystalline... http://www.freshpatents.com/Magnetic-tape-head-dt20090528ptan20090135520.php Wed, 3 Jun 2009 14:38:28 -0700 A magnetic tape head has a base substrate, a magnetic head layer formed on the base substrate, and a closure piece formed on the magnetic head layer. The distance from a first plane comprising a point on the tape bearing surface of the base substrate to a third plane comprising... http://www.freshpatents.com/Flying-head-slider-and-magnetic-disk-apparatus-dt20090528ptan20090135522.php Wed, 3 Jun 2009 14:38:28 -0700 A pair of side pads, which are arranged to face each other by having a negative pressure generating part in the direction orthogonal to an air flow direction of a slider therebetween, are made to have three or more steps, respectively. Of the respective surfaces having the plural steps, the... http://www.freshpatents.com/Protective-film-forming-method-dt20090528ptan20090135521.php Wed, 3 Jun 2009 14:38:28 -0700 To provide a high-quality protection target by forming a protective film that is thin and excellent in corrosion resistance. Provided is a protective film forming method for forming a protective film at least on a surface of a protection target. The method comprises: a base film forming step for forming... http://www.freshpatents.com/Microactuator-head-gimbal-assembly-and-disk-drive-device-dt20090528ptan20090135523.php Wed, 3 Jun 2009 14:38:28 -0700 Embodiments of the present invention relate to approaches to effectively let noise on a head slider bonded to a silicon substrate of a microactuator, escape to the ground. A head gimbal assembly (HGA) according to an embodiment of the present invention comprises a microactuator bonded to a gimbal tongue. The... http://www.freshpatents.com/Magnetic-head-driving-circuit-magnetic-recording-reproducing-device-and-reproducing-head-protection-method-dt20090528ptan20090135524.php Wed, 3 Jun 2009 14:38:28 -0700 A magnetic recording and reproducing device is a hard disk device which writes information onto a magnetic disk (not shown), or reads information therefrom, and includes: a reproducing head; a recording head; and a magnetic head driving circuit. The magnetic head driving circuit is a circuit, by which driving of... http://www.freshpatents.com/Suspension-head-gimbal-assembly-and-disk-drive-unit-with-the-same-dt20090528ptan20090135525.php Wed, 3 Jun 2009 14:38:28 -0700 A suspension includes a flexure, a load beam, and a deformation-resistant plate positioned between the flexure and the load beam. The deformation-resistant plate has a holding plate portion for holding a slider through the flexure and a pair of beam portions. The beam portions each have a bent portion bent... http://www.freshpatents.com/Magnetic-recording-media-and-method-of-fabricating-the-same-dt20090528ptan20090135527.php Wed, 3 Jun 2009 14:38:29 -0700 A magnetic recording medium and a method of manufacturing the magnetic recording medium are provided. In order to increase the recording density of the magnetic recording medium, the magnetic recording medium is configured to multiple magnetic layers by consecutively forming a first magnetic layer having a thin film shape and... http://www.freshpatents.com/Magnetoresistive-device-dt20090528ptan20090135526.php Wed, 3 Jun 2009 14:38:29 -0700 The device comprises two magnetoresistive elements (10, 20) placed relative to each other in magnetostatic interaction in such a manner that a magnetic flux passing between these elements (10, 20) closes through soft ferromagnetic layers (26, 27) of said elements (10, 20). A write device (15) is associated with the... http://www.freshpatents.com/Magnetic-reader-with-piggybacked-fence-dt20090528ptan20090135528.php Wed, 3 Jun 2009 14:38:29 -0700 A magnetic head comprises a plurality of elements selected from a group consisting of readers and writers. A servo sensor is positioned towards the elements, the servo sensor being adapted for sensing a first servo track of a magnetic medium. A fence is positioned towards the servo sensor and aligned... http://www.freshpatents.com/Magnetic-head-for-perpendicular-magnetic-recording-and-method-of-manufacturing-same-dt20090528ptan20090135530.php Wed, 3 Jun 2009 14:38:29 -0700 A pole layer has an end face located in a medium facing surface, allows a magnetic flux corresponding to a magnetic field generated by a coil to pass therethrough, and generates a write magnetic field. A shield includes a first layer having an end face located in the medium facing... http://www.freshpatents.com/Magneto-resistive-effect-device-of-the-cpp-type-and-magnetic-disk-system-dt20090528ptan20090135529.php Wed, 3 Jun 2009 14:38:29 -0700 The invention provides a magneto-resistive effect device of the CPP (current perpendicular to plane) structure, comprising a magneto-resistive effect unit, and a first shield layer and a second shield layer located and formed such that the magneto-resistive effect unit is sandwiched between them, with a sense current applied in a...