Bizarre Patents
Pillow with retractable umbrella
A pillow assembly having a supporting assembly and a retractable umbrella assembly that is easily transportable and allows a user to support his/her head while covering their face from sunlight.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7746594 | Disk drive comprising slanted line servo burst sets offset radially A disk drive is disclosed comprising a disk having servo data defining a plurality of servo tracks. The servo data comprises a preamble, and a plurality of slanted line servo bursts recorded at a tilt angle with respect to the preamble. The slanted line servo bursts... | 06/29/2010 |
| 7688542 | Method to identify short spirals A method for writing servo onto a disk of a hard disk drive with a servo writer. The method includes writing a plurality of spiral servo signals onto a disk. The spiral servo signals include a plurality of short spirals separated by unequal distances. The short spir... | 03/30/2010 |
| 7423835 | Method and apparatus for servo control using spiral servo information in a disk drive According to one embodiment, in a disk drive using a disk medium storing spiral servo information, a CPU generates virtual servo information having assumed virtual track centers corresponding to centers of concentric data tracks. The CPU performs control to position... | 09/09/2008 |
| 7403355 | Information recording medium, recording/reproducing apparatus, and stamper On an information recording medium, a data track pattern and a servo pattern composed of a concave/convex pattern including a plurality of convex parts are formed on at least one surface of a substrate and respective concave parts in the concave/convex pattern are f... | 07/22/2008 |
| 7382566 | Magnetic disk protection mechanism, computer system comprising protection mechanism, protection method for magnetic disk, and program for protection method A mechanical transport device includes a system for transport; and a hard disk drive attached to the system. The hard disk drive comprises a magnetic recording disk to record data, a head to read or write the data to or from the disk, and a drop sensor designed to s... | 06/03/2008 |
| 7359133 | Magnetic recording medium and drive apparatus therefor A flexible recording medium, which has a track width in the range of approximately 1-3 μm, capable of facilitating good tracking control. A magnetic pattern bearing servo signals is provided on the guard bands formed on both sides of a data track of a magnetic reco... | 04/15/2008 |
| 7355808 | Method and apparatus for partial self-servo writing using servo wedge propagation A method and apparatus for partial self-servo writing a disk surface in a disk drive using servo wedge propagation is provided. In one embodiment, servo information is written by a servo track writer near an outer diameter of the disk surface. The servo information ... | 04/08/2008 |
| 7333292 | Seek servo control method for adapting to supply voltage variation and disk drive using the same A seek servo control method and device for a disk drive device for performing seek servo control according to a variation in a power supply voltage for the disk drive. The seek servo control method includes: detecting a supply voltage for the disk drive; and adjusti... | 02/19/2008 |
| 7334165 | Signal processing apparatus and a data recording and reproducing apparatus including local memory processor In a data recovery processing, the conventional overhead, primarily, latency due to a rotational recording media is removed. Secondary, in a signal processing or in a recording and reproducing apparatus, reliability of data reproduction is improved by repeatedly pro... | 02/19/2008 |
| 7317588 | Storage device, data-assurance control device, and data assurance method A data reading unit reads inner offset data from an offset reading in an inner direction toward a center of a storage medium and outer offset data from an offset reading in an outer direction toward a circumference of the storage medium. A data comparing unit compar... | 01/08/2008 |
| 7283320 | Magnetic recording medium including servo and data bands in the magnetic layer A magnetic recording medium having a magnetic layer containing magnetic powder provided on a support is disclosed. The magnetic layer possesses a servo band in which a servo signal for controlling tracking of a magnetic head, and a data band on which a data is recor... | 10/16/2007 |
| 7280294 | Tri-state servowriter driver with slow return to zero A method and apparatus for writing timing-based magnetic servo band patterns on magnetic storage media. The apparatus includes a magnetic head and a tri-state driver. The driver is adapted to control three magnetic head states including two writes states having posi... | 10/09/2007 |
| 7265933 | Disk drive computing repeatable run out while actuator arm is pressed against crash stop A disk drive is disclosed comprising a voice coil motor (VCM) for rotating an actuator arm about a pivot in order to actuate a head over a disk. The disk is rotated by a spindle motor, and a feed-forward compensation value is computed that compensate for a non-centr... | 09/04/2007 |
| 7265931 | Apparatus to reject disk drive disturbance Track mis-registration (TMR) correction is conditionally made in a hard disk drive using servo data in a closed loop servo control scheme, along with one or more alternative sensing schemes when an external shock or vibration occurs. The alternative sensing schemes ... | 09/04/2007 |
| 7250738 | Nonlinear hysteresis control system A nonlinear hysteresis control system for controlling an actuator with nonlinear hysteresis effect is disclosed. An improved extended hysteresis effect profile further stores the displacement when a applied voltage of the actuator is from 0 voltage to a specific vol... | 07/31/2007 |
| 7245448 | Information recording apparatus and data writing control device therefor A plurality of recording media combined integrally having a plurality of recording surfaces; and a plurality sets of reading heads and writing heads, combined integrally, provided for the respective ones of the plurality of recording surfaces, are provided. Upon wri... | 07/17/2007 |
| 7242546 | Determining a location based on a cyclic bit sequence containing consecutively-placed identical bit-groups A location within a cycle is determined by reading a portion of a cyclic bit sequence, the bit sequence containing several interspersed bit-group sets that each contain a plurality of series that each consist of several consecutively-placed identical bit-groups. On ... | 07/10/2007 |
| 7212372 | Magnetic tape and magnetic tape cartridge There is provided a magnetic tape, to be used at a running speed of at least 4,000 mm/sec., wherein servo signals for controlling tracking are recorded on the magnetic layer or the backcoat layer, and wherein the difference between the recording track width and the ... | 05/01/2007 |
| 7209314 | Disk drive with phase-quadrature servo pattern and demodulated position error signal insensitive to timing and phase-misalignment errors A magnetic recording disk drive uses a phase-quadrature position-error-signal (PES) pattern and a servo signal demodulator that is insensitive to clock errors and phase-misalignment errors. The disk has angularly-spaced servo sectors, with each servo sector having r... | 04/24/2007 |
| 7203023 | Magnetic recording unit and magnetic recording medium The present invention provides a magnetic recording unit, including: a magnetic head; a magnetic recording medium having a servo pattern for adjusting a position of the magnetic head; a frequency detecting element for detecting a frequency in the servo pattern on a ... | 04/10/2007 |
| 7199956 | Disk drive self-servo writing using fundamental and higher harmonics of a printed reference pattern Disk drive self-servo writing includes transferring a reference pattern by magnetic printing onto a reference disk, wherein the resulting printed reference pattern includes embedded servo information that provides servo timing and head position information, installi... | 04/03/2007 |
| 7177246 | Optical disk drive focusing apparatus using sum signal A system provides a signal to an actuator within an optical pickup unit of an optical disk drive. In one implementation, SUM signal data (an output from the quad sensors typically present in the optical pickup unit) is recorded within a SUM table. An error term gene... | 02/13/2007 |
| 7164552 | Method for self-servo writing a disk drive with dual-stage actuator A technique for setting the initial servo track pitch for a servo system of a hard disk drive (HDD) is based on using a secondary actuator, such as a microactuator or a milliactuator. The actuator of the HDD is positioned against a crash stop and a burst pattern is ... | 01/16/2007 |
| 7158328 | Multi-phase acceleration of a data storage disc A disc drive having a multi-phase acceleration procedure is disclosed. The multi-phase acceleration procedure accelerates a data storage disc in the disc drive from an initial rotational velocity to a final rotational velocity. As the disc reaches the final rotation... | 01/02/2007 |
| 7158336 | Window timing adjustment for spiral bursts A method for writing servo information onto a disk of a hard disk drive with a servo writer. The method includes writing a plurality of spiral servo signals with a head. The spiral servo signals are used to write servo patterns using at least one timing window. The ... | 01/02/2007 |
| 7154697 | Vertically-oriented servo track writer and method A vertically-oriented servo track writer assembly and method for recording servo pattern on a disc surface includes a spindle hub assembly that rotates one or more discs in a substantially vertical plane and an actuator assembly that pivots an E-block about a substa... | 12/26/2006 |
| 7136243 | Method and apparatus for correcting for systematic errors in timing pattern generation Improvements in placement of timing patterns in self-servowriting include correcting for systematic errors due to geometric effects. A correction is made for varying systematic errors, such as when the recording head has spatially separate read and write elements. F... | 11/14/2006 |
| 7133233 | Disk drive with read while write capability A disk drive includes recording media having one or more recording surfaces, one or more transducer heads positionable relative to the recording surfaces by an actuator operating within a head position servo loop, and a data transfer driver. A preamplifier in the da... | 11/07/2006 |
| 7130142 | Magnetic disk apparatus, method of controlling a magnetic disk, and program for controlling a magnetic disk A magnetic disk apparatus comprising a magnetic disk 1, a head, a servo-information detecting unit 3, a servo-information position calculating unit 4, a write-permission determining unit 15, a data-writing unit 6, and a head-drive ... | 10/31/2006 |
| 7126780 | Method, system, and article of manufacture for self-servowriting a disk A compound actuator self-servo writes a hard disk. The compound actuator moves to track n+1. A first head on the compound actuator track follows on track n. The other heads servo write on track n+2. One of the other heads track follow on track n. The first head serv... | 10/24/2006 |
| 7109701 | Method for testing magnetic hard disk or magnetic head A testing method for a magnetic hard disk or a magnetic head in a test system includes a moving step in which the magnetic head, which moves to fly closely over the magnetic disk, moves to a predetermined radial position corresponding to the position data of the mag... | 09/19/2006 |
| 7106545 | Method and apparatus for servowriting in a disk drive An additive self-servowriting method that records a servo pattern on a disk surface in a disk drive is disclosed. A servowriting method according to the present invention writes an initial servo pattern with a head moved to the inner circumference of the disk at the... | 09/12/2006 |
| 7102840 | Disc apparatus and servo pattern write method thereof Disclosed are a disc apparatus and a servo pattern write method thereof. The disc apparatus includes a disc having: a first servo pattern formed of burst patterns and written to have predetermined repetition patterns in a radial direction; and second servo pattern h... | 09/05/2006 |
| 7092182 | Marker-zone to determine gross positioning on a reference surface of a media Template patterns in accordance with the present invention can include one or more marker-zones printed to a reference surface of a disk for determining gross-position along a stroke of a read head connected with a rotary actuator. The one or more marker-zones can b... | 08/15/2006 |
| 7092184 | Monitoring a sensor's output using a target window that is based on a longitudinal offset's position-dependent indicator Using a “reference” sensor, a reference position is detected in a frame of reference that is moving along a predetermined path relative to the reference sensor. The reference position is used to derive a position-dependent indicator of a position-dependent “lo... | 08/15/2006 |
| 7088546 | Method to reject disk drive disturbance Track mis-registration (TMR) correction is conditionally made in a hard disk drive using servo data in a closed loop servo control scheme, along with one or more alternative sensing schemes when an external shock or vibration occurs. The alternative sensing schemes ... | 08/08/2006 |
| 7082007 | Method to achieve higher track density by allowing only one-sided track encroachment A disc drive includes a transducer having a separate element for writing information and a separate element for reading information to and from the disc. In a disc drive designated to read and write long sequential records, the track misregistration budget is reduce... | 07/25/2006 |
| 7075748 | Disk drive with a dual-stage actuator and failure detection and recovery system for the secondary actuator A dual-stage actuator disk drive has calibration tracks located in a nondata band, and uses a secondary-actuator failure detection and calibration test run by the servo control processor. The calibration tracks contain a pattern of pre-written magnetized test blocks... | 07/11/2006 |
| 7057844 | Method and apparatus for head positioning control in a disk drive A disk drive is disclosed which performs a head positioning operation capable of coping with a variation of an offset caused by a disk runout. A CPU of a head positioning control system calculates a second position offset amount by correcting a first position offset... | 06/06/2006 |
| 7057842 | Method, medium, and apparatus for offline self servo writing and disk drive using the same An offline self servo writing method capable of improving servo writing accuracy and reducing copying time by designing a servo pattern of a reference disk to have the same resolution as a final servo pattern, and a disk drive using the method. The offline self serv... | 06/06/2006 |
