| Patent Number |
Title Of Patent |
Date Issued |
| 7553426 |
Apparatus, system, and method for increasing data storage density in patterned media |
June 30, 2009 |
| An apparatus, system, and method are disclosed for increasing data storage density in patterned media. One or more deposition sources may apply magnetic material to one or more recesses formed in a substrate, each recess having opposing sidewalls that are effectively coated by the de |
| 7502193 |
Positioning of a magnetic head in a magnetic data recording device using a multiple sensor array |
March 10, 2009 |
| A system method and apparatus for determining a position error signal (PES) for servo tracking in a data recording system using a data track. The PES is determined using a sensor array that includes a plurality of sensors offset from one another by certain predetermined distances in a |
| 7236324 |
Apparatus, method and system for fabricating servo patterns on high density patterned media |
June 26, 2007 |
| An apparatus, system, and method are disclosed for utilizing a "shadow mask" approach to fabricate servo patterns on high density patterned media. The apparatus may include a deposition mask having a plurality of apertures generated by a conventional lithographic process. Material may |
| 7046476 |
Method apparatus and system for accessing discontinuous media tracks |
May 16, 2006 |
| An apparatus, system, and method are disclosed for accessing discontinuous media tracks. The apparatus, in one embodiment, accesses discontinuous media tracks of a storage medium having one or more independently formed storage regions thereon. Each storage region may include a set of tra |
| 6867942 |
Storage device mounted in portable data storage media type cartridges |
March 15, 2005 |
| A data storage cartridge having an data storage device, such as an encased magnetic disk drive assembly, is, in one embodiment, of generally an exterior dimensional form factor of a tape cartridge having a leader block with a hole therethrough for engagement by a threading pin. To distin |
| 6826004 |
Gripper assembly for interfacing with portable storage devices in a storage library |
November 30, 2004 |
| Provided is a method, system, and storage library for storing data. A data storage cartridge includes a data storage device and the data storage device includes a storage medium and a power supply. A transfer station includes an interface capable of mating with the data storage cartridge |
| 6795278 |
Method of protecting read sensors from electrostatic discharge damage during the manufacture of |
September 21, 2004 |
| Methods and apparatus for protecting read sensors from damage caused by electrostatic discharge (ESD) during manufacturing are described. Two electrical connections are formed and utilized for ESD protection: one primarily for early protection of the sensors (i.e. prior to cutting and |
| 6699102 |
Lapping monitor for monitoring the lapping of transducers |
March 2, 2004 |
| A lapping monitor for monitoring the lapping of a lapping surface of a body having at least one transducer which has a height that has to be lapped. The lapping monitor has a lap unit for lapping the lapping surface, at least one lapping indicator mounted close to the transducer to indic |
| 6650498 |
Actuator retract circuit for dual speed hard disk drive |
November 18, 2003 |
| A dual speed hard drive system with an actuator retract system capable of retracting the actuator at approximately the same speed and power in both speed modes. In one embodiment, the control of resistance is used to control the amount of back-emf current supplied to the voice coil motor |
| 6545865 |
Shock mount for a device packaged in a portable cartridge |
April 8, 2003 |
| A shock mount structure facilitates shock absorption for a device. An outrigger, preferably two wing-like outriggers at diametrically opposite sides of the device, is mounted to the device at an attachment point, and is positioned between two contacting force absorbing members, distribut |
| 6462904 |
Timing based servo system for magnetic tape systems |
October 8, 2002 |
| A track following servo system is disclosed for use with magnetic tape systems in which magnetic servo track patterns contain transitions recorded at more than on azimuthal orientation across the width of the servo track. The timing of a signal derived from reading at any point acros |
| 6344949 |
Flying height adjustment for air bearing sliders |
February 5, 2002 |
| Flying height Adjustment for Air Bearing Sliders An air bearing slider for sliding over a medium surface of a recording medium and having an air bearing surface facing the disk surface, a back surface perpendicular to the air bearing surface and a head at the back surface. During operati |
| 6320719 |
Timing based servo system for magnetic tape systems |
November 20, 2001 |
| A track following servo system is disclosed for use with magnetic tape systems in which magnetic servo track patterns contain transitions recorded at more than on azimuthal orientation across the width of the servo track. The timing of a signal derived from reading at any point acros |
| 6316898 |
Pulse modulated capacitive retract device for a voice coil actuator |
November 13, 2001 |
| A capacitor powered electronic emergency device retracts and parks an actuator into a resistive parking position with a crash stop barrier. Due to variations of the kinetic status of the actuator at the begin of the retraction, the actuator reaches the resistive parking position with |
| 6288876 |
Melting and refreezing method for smothing and load/unloading lift tab for disk drive smoothed l |
September 11, 2001 |
| A lift tab for a load/unload type of data storage hard drive and a method of smoothing the lift tab. The method includes the step of striking the lift tab with short duration (e.g. 10-500 nanosecond) energy pulses to melt a thin surface layer of the lift tab. The melted layer flows under |
| 6282051 |
Timing based servo system for magnetic tape systems |
August 28, 2001 |
| A track following servo system is disclosed for use with magnetic tape systems in which magnetic servo track patterns contain transitions recorded at more than on azimuthal orientation across the width of the servo track. The timing of a signal derived from reading at any point acros |
| 6239685 |
Bistable micromechanical switches |
May 29, 2001 |
| A bistable micromechanical switch that includes a substrate, at least two anchor points formed on the substrate, and a beam structure that includes a two-material beam attached to at least two anchor points. The two-material beam has a first portion, a second portion and a center por |
| 6229664 |
Head-disk interface tester with optically servo controlled rotary voice coil motor actuator |
May 8, 2001 |
| A head-disk interface tester for magnetic recording disk drives uses a rotary voice coil motor (VCM) actuator and a rotating laser beam that rotates with the actuator to accurately move the head to the desired position and with the desired velocity. A diode laser is located on the ro |
| 6118632 |
Magnetic disk stack having laser-bump identifiers on magnetic disks |
September 12, 2000 |
| A magnetic disk with nonmagnetic information encoded under, in or above the magnetic layer of the disk is described along with the disk drive using the magnetic disks. The information may be stored as a series of laser-written marks (e.g., bumps, oxidized spots or spots with altered |
| 6034841 |
Disk drive with composite sheet metal and encapsulated plastic base |
March 7, 2000 |
| A miniature removable disk drive that meets the CompactFlash type II form factor and interface specifications uses a composite sheet metal/plastic tub-shaped base for supporting the disk drive components, e.g., the spindle motor with attached disk, the voice coil motor actuator with |
| 6025968 |
Load/unload disk drive with multistage retract circuit for parking the head carriers on power do |
February 15, 2000 |
| A data recording disk drive uses a circuit responsive to the removal of power to the spindle motor to generate a two-stage torque to retract the actuator and move it to a parking ramp. The spindle motor power removal circuit sends an initial signal to a first switch connected to a full-w |
| 6021013 |
Timing based servo system for magnetic tape systems |
February 1, 2000 |
| A track following servo system is disclosed for use with magnetic tape systems in which magnetic servo track patterns contain transitions recorded at more than on azimuthal orientation across the width of the servo track. The timing of a signal derived from reading at any point acros |
| 5930065 |
Timing based servo longitudinal addressing |
July 27, 1999 |
| Disclosed is a magnetic tape media having addressing data information superimposed on prerecorded track following servo information. The servo information is recorded in magnetic flux transition patterns defining at least one longitudinal servo track. A servo burst pattern of at least tw |
| 5923272 |
Serial bitstream code for timing-based servo |
July 13, 1999 |
| Disclosed is a coding technique which takes advantage of the use of an internal synchronization technique for a timing-based servo which employs alternating 4 and 5 transition bursts of servo to provide a simplified synchronization of the data, and comprises a coding technique which |
| 5729399 |
Contact start/stop disk drive with minimized head-disk wear in textured landing zone |
March 17, 1998 |
| A contact start/stop (CSS) magnetic recording disk drive has a highly textured head easier landing zone on the disk and uses a start/stop precedure that minimize both the time the carrier is in contact with the landing zone and the disk rotational speed during contact. The disk landi |
| 5689384 |
Timing based servo system for magnetic tape systems |
November 18, 1997 |
| A track following servo system is disclosed for use with magnetic tape systems in which magnetic servo track patterns contain transitions recorded at more than one azimuthal orientation across the width of the servo track. The timing of a signal derived from reading at any point acro |
