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| Number | Title | Issue Date |
| 7357085 | Machine guideway employing electromagnetic suspension A machine guideway for used in machine processing includes a base (10, 40), a slide block (20, 50) slideably received in a sliding groove of the base, and an electromagnetic suspension system. The electromagnetic suspension system provides a repulsion ... | 04/15/2008 |
| 7359625 | Recording medium with content stream data recorded thereon, recording apparatus, and reproducing apparatus therefor A recording medium having content stream data recorded thereon and a recording and reproducing apparatus provided therefor. On the recording medium, content stream data is recorded as a stream object formed of one or more stream object units, each having a predeterm... | 04/15/2008 |
| 7187517 | Magnetic brake for disk drive A magnetic brake to prevent rotation of the spindle motor and disk(s). The magnetic brake includes two magnets, one attached to the spindle, clamp, disk, or motor, and the other magnet is coupled to the drive housing or to a movable member. Before the drive is insta... | 03/06/2007 |
| 7006758 | Data recording medium, and data reproducing apparatus An information recording medium on which are recorded substantial data and reproduce control information for reproducing the substantial data, wherein the reproduce control information includes first reproduce control information required for reproducing the substan... | 02/28/2006 |
| 6754028 | Control integrated circuit for floppy disk drive A control IC is mounted on a circuit board and is used for driving both a one-inch stepper motor and a half-inch stepper motor. The control IC includes at least a number of pads required for driving the half-inch stepper motor. When the control IC drives the one-inc... | 06/22/2004 |
| 6650961 | Disk cartridge data storage apparatus Methods and apparatus for storing data which employ a hard disk memory media which is operably supported within a cartridge shell to form a disk cartridge. The disk cartridge can be employed in the manner of a tape cartridge wherein the disk cartridge can... | 11/18/2003 |
| 6266677 | System and method for ensuring the integrity of stored data A system and method for determining when data stored in a data storage device is becoming unreliable. A list of trigger events is maintained, either on the media, or on a host processor, and the number of trigger events pertaining to data retrieval errors... | 07/24/2001 |
| 6204995 | Magnetic disc apparatus The present invention provides a magnetic disc apparatus comprising a vertical two-layered magnetic recording (MR) medium and a mono-pole/MR composite head or ID/MR composite head, wherein the vertical two-layered magnetic recording medium includes a vert... | 03/20/2001 |
| 6103404 | Laser textured magnetic disk comprising NiNb A method for manufacturing a magnetic disk comprises the steps of depositing NiP (20) on a substrate (22); depositing NiNb (24) on the NiP; and laser texturing the NiNb. "Sombrero" shaped texture features are more easily formed on the substrate/NiP/NiNb s... | 08/15/2000 |
| 5985403 | Magnetic recording medium and magnetic recording reproducer A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer and a protective layer which are formed on the non-magnetic substrate in that order, wherein a substance(s) as a single component or a plurality of components, which cons... | 11/16/1999 |
| 5748600 | Rotational optical head for optical recording medium A pickup apparatus of an optical card has an improved data transfer efficiency and miniaturization and thin shape of the apparatus can be realized. The length of a line segment connecting a center of an objective lens provided in a rotational optical unit... | 05/05/1998 |
| 5695864 | Electronic device using magnetic components In the present invention, electrons flow through a free or excitable magnet, or reflect from it, to make its magnetization respond. To accomplish this, the spin vectors of the flowing electrons are preferentially polarized by an auxiliary ferromagnet, who... | 12/09/1997 |
| 5627946 | Hard disk format using frames of sectors to optimize location of servo bursts A hard disk format is disclosed which sequentially arranges a number of different sector types, each having a different format, into frames which are repeated around the tracks of a magnetic disk. The sector types and frame arrangements are chosen so that... | 05/06/1997 |
| 5612834 | Servo burst controller for a magnetic disk A novel disk controller and method performed by a disk controller is disclosed which provides a highly efficient means of interrupting the reading or writing of a field in a sector on a magnetic disk for skipping over a servo burst located anywhere within... | 03/18/1997 |
| 5592348 | Method and structure for locating and skipping over servo bursts on a magnetic disk A novel disk controller and method performed by a disk controller is disclosed which provides a highly efficient means of interrupting the reading or writing of a field in a sector on a magnetic disk, for skipping over a servo burst located anywhere withi... | 01/07/1997 |
| 5452161 | Flexible vane latch apparatus for a disk drive An actuator assembly latching apparatus for a disk drive is realized with an elongated flexible vane disposed in proximity to a rotating disk. The rotating disk produces an airflow at different speeds across the flexible vane. Resulting differential ambie... | 09/19/1995 |
| 5331483 | Axially compact direct drive for storage disk hub An axial compact direct drive for a storage disk comprises a stator, a rotor carrying a hub for receiving storage disks and a bearing arrangement. The bearing arrangement is disposed at a radially external edge of the hub to rotatably support the hub agai... | 07/19/1994 |
| 5319511 | Aerodynamic actuator latch with magnetic return spring for hard disk drive An aerodynamic actuator latch for a disk file uses a fringe field from permanent magnets of the actuator assembly to generate a reverse bias torque, in lieu of a separate return spring. The latching mechanism includes a stop arm portion which cooperates w... | 06/07/1994 |
| 5296986 | Rotary intertial latch for disk drive actuator to protect against rotational shock force A rotary inertial latch is disclosed for maintaining the actuator of a disk drive in its proper position when the drive is not in operation.... | 03/22/1994 |
| 5270879 | Magneto-optical disk inspecting method and apparatus This invention relates to a magneto-optical disk inspecting apparatus in which n pairs of a write head and a read head, and the area of the magneto-optical disk to be inspected is divided in n zones, the respective n pairs being assigned to the respective... | 12/14/1993 |
| 5245490 | Disc recording and/or reproducing apparatus including a head positioning mechanism having a spiral cam for positioning a head at a reference position A magnetic disc recording and/or reproducing apparatus in which a magnetic disc cassette containing a magnetic disc provided with a center hub is loaded so that the center hub engages with a rotary shaft of a disc rotating motor to rotate the magnetic dis... | 09/14/1993 |
| 5122914 | Disk drive system with transportable carrier and mounting assembly A computer system providing for quick removal and quick and simple installation of a disk drive unit into the system. A latching and positioning arrangement provides releasable support for the disk drive unit and achieves automatic electric connections wi... | 06/16/1992 |
| 5060106 | Disk cartridge including door opening mechanism and improved hub assembly A disk cartridge having a housing in which a disk is rotatably mounted via a hub assembly. The housing includes two cover plates, each of which has a door aperture that is selectively covered by a door that is controlled by a dedicated door control assemb... | 10/22/1991 |
| 5051677 | Apparatus for processing rotary member An apparatus for processing a rotary member, comprising: a rotational drive for driving the rotary member so as to rotate the rotary member about an axis of the rotary member; an encoder for detecting a rotational position of the rotational drive device; ... | 09/24/1991 |
| 5036416 | Aerodynamically releasable lock for a disk file actuator assembly An actuator lock for a disk drive in which fixed air vanes projecting between a adjacent disks divert air flow, generated by disk rotation, into a narrowing passage adjacent the disks to impinge upon an air vane forming part of a rotatably mounted actuato... | 07/30/1991 |
| 5010426 | Installation mechanism for removable computer drive module An installation mechanism for a removable computer drive module with a handle operated automatically engaging dual rack and pinion device. The pinions are carried by the handle which is pivotally mounted adjacent a module receiving opening in a console. T... | 04/23/1991 |
| 5001700 | Disk clamp and centering apparatus for a beam addressable disk drive system Apparatus for centering and clamping a disk on a spindle-drive is disclosed. A bistable magnetic clamp normally held in an axially offset position from the plane of the disk is preferentially drawn to a coupler washer on the spindle-drive when the spindle... | 03/19/1991 |
| 4959740 | Disc recording and/or reproducing apparatus including means for minimizing the effects of temperature changes A recording and/or reproducing apparatus for recording on and/or reproducing from a recording medium. The apparatus includes a head supported by a head mount movable in the radial direction of the recording medium and a head positioning member for displac... | 09/25/1990 |
| 4912580 | Information storage system with readily removable high capacity disk drive unit A computer system providing for quick removal and quick and simple installation of a disk drive unit into the system. A latching and positioning arrangement provides releasable support for the disk drive unit and achieves automatic electric connections wi... | 03/27/1990 |
| 4890175 | Recording medium mounting means and recording or reproducing apparatus incorporating same A recording or reproducing apparatus has a mounting member arranged at a recording medium receiving member. The mounting member press fits the recording medium onto the drive shaft of the apparatus as the receiving member is moved to place the recording m... | 12/26/1989 |
| 4833556 | Low drag stabilizer device for stabilizing the interface between a transducer and a moving medium A ceramic stabilizer is shown for minimizing the drag experienced in a magnetic interface between the stabilizer and a rapidly moving pliable magnetic disk. The stabilizer includes a stabilizing block with an opening through which a magnetic head protrude... | 05/23/1989 |
| 4823337 | Device for recording information on or reading information from an information disc Clamping device (21) for clamping an optical disc on a turntable comprises a disc-pressure means (23), a support (5) for the disc-pressure means, which support is movable between an operating position and a rest position, and a permanent-magnet system com... | 04/18/1989 |
| 4819100 | Floating head slider device for magnetic disk apparatus In a magnetic disk apparatus adapted such that a magnetic disk made of a hard disk type carrier with a magnetic recording region formed on the surface thereof is rotated in a high speed therein, air is introduced between its slider formed integral with a ... | 04/04/1989 |
| 4794587 | Disk drive lock A virgin disk is exteriorly secured across an open wall of a casing. When the disk is inserted in the slot of a computer and locked inside by a lever, the casing prevents access to the lever and to the disk and to the removal of the latter from the comput... | 12/27/1988 |
| 4792707 | Disk tracking device A tracking device has a linear motor having a driving coil, a speed sensor having a detection coil, and a moving member reciprocated in a predetermined range together with the driving coil and the detection coil. The moving member receives a driving force... | 12/20/1988 |
| 4788671 | Information recording and reproducing apparatus for effecting simultaneous recording and reproduction but at different rates There is disclosed an information recording and reproducing apparatus which is provided with a disk-shaped recording medium having a recording face allowing information recording and reproduction from both sides; a recording head positioned at a side of t... | 11/29/1988 |
| 4764831 | Apparatus and method for retaining a head arm of a disk drive assembly A disk drive which includes an automatic parking brake for retaining the driver arm in a predetermined position when power is removed from the disk drive. The brake is mounted externally to the driver arm, reducing the weight of the driver arm. The brake ... | 08/16/1988 |
| 4754397 | Fault tolerant modular subsystems for computers A fault tolerant computing facility is disclosed. The facility includes a housing array for containing a plurality of hardware element modules such as disk drives, a plurality of modularized power supplies and plural power distribution modules, each being... | 06/28/1988 |
| 4740851 | Disk drive with spicule member A device for aligning a disk contained in a cartridge with a motor and transducer of a disk drive is disclosed. A record disk contained within a rigid apertured cartridge is inserted into a disk drive for use with that disk drive. Insertion of the cartrid... | 04/26/1988 |
| 4739422 | Magnetic recording apparatus A magnetic recording apparatus including a base, a drive shaft mounted on the base for rotating a magnetic disc, a movable member adapted to reciprocate in a radial direction of the magnetic disc while holding a magnetic head, the movable member being urg... | 04/19/1988 |
