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Vehicular Impact Signaling Device
An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.
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| Number | Title | Issue Date |
| 7515377 | Storage apparatus and control method for detecting vibration produced during seeking An actuator supports a head at one end of a rotatably supported shaft unit and supports a coil of a voice coil motor at the other end, and moves the head to an arbitrary track position of a recording medium. A sensor, attached to a coil support unit of the actuator,... | 04/07/2009 |
| 7468858 | Information recording apparatus An information recording apparatus comprises a recording medium, a swing arm driven by an actuation unit, the swing arm swinging over a surface of the medium in response to driving by the actuation unit, a recording head carried by the swing arm and scanning over th... | 12/23/2008 |
| 7361456 | Method of manufacturing master disk, apparatus of manufacturing master disk, method of detecting moving distance difference of master disk, and apparatus of detecting moving distance difference of master disk A method is provided for manufacturing a master disk in which there is precise feeding accuracy of the master disk by using a horizontally moving device which moves with curvature. The method of manufacturing a master disk includes the steps of rotating a resist mas... | 04/22/2008 |
| 7274532 | Base member of disk drive having clock window to write servo track information A base member of a disk drive having a bottom plate, on which a spindle motor to rotate a disk is mounted, and a side wall positioned along an edge of the bottom plate. The base member has a clock window positioned on the side wall, through which a clock head to wri... | 09/25/2007 |
| 7256586 | Method and device for measuring the repeatable and non-repeatable runout of rotating components of a spindle motor The method and a device to measure the repeatable and non-repeatable runouts of a rotating component of a spindle motor with the aid of at least one probe measuring changes in the distance between the probe and the rotating component depending on the angle of rotati... | 08/14/2007 |
| 7215504 | Disk drive using an optical sensor to detect a position of an actuator arm A disk drive is disclosed comprising a disk, an actuator arm, a head coupled to the actuator arm, a base, and an optical sensor operable to detect a position of the actuator arm. The optical sensor comprises a light source that is stationary relative to the base, a ... | 05/08/2007 |
| 7154699 | High bandwidth large stroke spin-stand A high bandwidth, large stroke spin-stand for testing components of a disc drive includes a coarse positioning stage and a rotary micropositioning stage. The spin-stand is capable of positioning a transducer head relative to the data storage disc based on one or bot... | 12/26/2006 |
| 7139152 | Servo methods and systems using existing data structures and optical masks In one example, a method is provided for detecting the relative position of a transducer head with respect to a storage medium utilizing existing or previously written data structures on a magnetic storage tape and optically diffractive media. The method includes ge... | 11/21/2006 |
| 7082006 | Compact optical tracking system for magnetic tape A compact optical tracking system for magnetic tape is disclosed which is independent of the magnetic format and head structure which can generate a position error signal without encoding on the servo track. A plurality of optical servo modules is arranged in a line... | 07/25/2006 |
| 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 |
| 7054095 | Displacement detection apparatus, and magnetic recording apparatus and encoder using the displacement detection apparatus To detect the position of an object in a non-contact state at high reliability, high accuracy, and high resolving power, a linearly polarized light beam from a semiconductor laser source is converted into an almost parallel light beam by a collimator lens, transmitt... | 05/30/2006 |
| 7051159 | Method and system for cache data fetch operations A cache controller structure and method are provided for managing cache access for a computer system. The computer system has a processor having a direction flag and configured to run a repetitive string operation, wherein the string operation is configured to seque... | 05/23/2006 |
| 7043741 | Adjustment apparatus for a spindle motor of an optical disk drive An adjustment apparatus for regulating the inclination angle of a spindle motor of an optical disk drive is disclosed. The spindle motor is mounted on a driving circuit board which is mounted in a traverse module. The adjustment apparatus comprises an optic axis reg... | 05/09/2006 |
| 7012777 | Disk drive with capacitance sensing of disk vibration and feedforward control for removal of read/write head track misregistration A data recording disk drive has a plurality of capacitive sensors, each sensor facing a surface of an associated disk, a capacitance sensing circuit for converting the sensed capacitance to a voltage representative of the distance between the sensor and the disk sur... | 03/14/2006 |
| 6980504 | Diffractive optical element with a pair of opposite surfaces projecting light on a photodetector An optical pickup device is adapted to read information signals from optical recording media of two different types such as a “DVD” and a “CD” for which two light beams with different wavelengths are used and comprises a photodetector having a single light r... | 12/27/2005 |
| 6977791 | Media servowriting system A system and methods for efficiently performing media writing functions is disclosed. The system and methods include: detecting media movement with respect to a base and heads during reading and writing, and moving the heads in response; using an interferometer, suc... | 12/20/2005 |
| 6950270 | Adaptive index reference position qualification Method and apparatus for performing a seek operation to move a data transducing head from an initial track to a destination track on a rotatable recording surface. A servo control circuit operates to sweep the head across the recording surface. Servo data from an in... | 09/27/2005 |
| 6924958 | Read/write transducer for hard disk drives with optical position measuring system, and manufacturing process thereof Described herein is a read/write transducer for a hard disk drivewith dual actuation stage, comprising at least one hard disk and at least one suspension carrying the read/write transducer. The read/write transducer comprises a supporting body having a substantially... | 08/02/2005 |
| 6920010 | Magnetic recording apparatus A magnetic recording apparatus which, even when crosstalk occurs between signals from three photosensitive parts of a photodetector, can detect a high-precision tracking error signal with stability. In a signal processing unit which processes electrical signals outp... | 07/19/2005 |
| 6910365 | Suspension shock characteristic test method and apparatus An apparatus and method for determining the shock characteristic of a suspension having a proximate portion, a distal portion and a spring portion therebetween has a rotatable structure having a mount for the suspension base portion such that the suspension distal p... | 06/28/2005 |
| 6898046 | Method and system for rotational velocity-based algorithm for vibration compensation in disk drives A disk drive (HDD) (and method) subject to linear and rotational vibration, includes an independent sensing unit for sensing a rotational velocity component of the rotational vibration in a predetermined frequency range, and an optimal filter combination for receivi... | 05/24/2005 |
| 6856484 | Magnetic servo of a recording head A method of aligning a magnetic read/write head to data tracks on a magnetic surface of a digital linear tape. The method includes writing a signal over a track of optical servo marks located on the magnetic surface of the tape with a servo channel writer, generatin... | 02/15/2005 |
| 6829118 | Optical rotational position information detecting apparatus An apparatus for optically detecting rotational position information of a rotating object, includes a light source, a detector which is located at a position to receive scattered light from the rotating object when the rotating object is irradiated with a light beam... | 12/07/2004 |
| 6829115 | Method and apparatus for measuring half frequency whirl in a spindle motor An apparatus and method of indirectly measuring half frequency whirl in a spindle motor having a rotor adapted to rotate a disc having a track which is followed by a transducer head that is actuated by a control system is provided. Vibration signals produced at the ... | 12/07/2004 |
| 6747832 | Disk apparatus and head position control method A disk drive has a data recording medium such as a disk, a spindle motor for rotating the disk, disk rotation speed controlling logics for supplying a spindle current to the above described spindle motor to rotate the disk at a constant speed, a head unit for access... | 06/08/2004 |
| 6735036 | Control of data sensor fly height A data storage device includes a head suspension assembly having an attached airfoil. The airfoil is coupled to an active (i.e., movable) element that responds to signals from height control circuitry. A method of controlling a height of an air bearing surface inclu... | 05/11/2004 |
| 6721113 | Method of recognizing master disk positioning mark A positioning mark of a soft magnetic film is provided at the center of a master disk, and a beam from a light source irradiates the position of the mark. When a optical reception sensor using a CCD recognizes the mark, the recognizability of the positioning mark ca... | 04/13/2004 |
| 6683744 | Magnetic disk evaluation apparatus and method A magnetic-disk evaluation apparatus includes a magnetic head positioned relative to a magnetic disk including temporary servo signals. Fluctuation of a magnetic head in a seek direction is measured using a measurement device. A measuring rotating arm mov... | 01/27/2004 |
| 6631047 | Interference device, position detecting device, positioning device and information recording apparatus using the same An apparatus having a first system for forming a composite light beam of two light beams to be made to interfere with each other, a splitting member for amplitude-splitting the composite light beam into three or more split light beams in the same area, an... | 10/07/2003 |
| 6580581 | Recovery of lateral position of a servo system with respect to longitudinal servo bands of a magnetic tape A servo system and method position a head laterally with respect to magnetic tape longitudinal defined servo bands arranged in a longitudinally shifted pattern for identification, and separated by data tracks. A servo controller responds to a loss of late... | 06/17/2003 |
| 6549360 | Magnetic recording medium with laser-formed servo-marks A magnetic recording medium is formed with a distribution of laser micromachined servo-marks in the form of pits or indentations with an attendant reduction in servo-tracking area and increased data-recording speed. Embodiments include laser texturing to ... | 04/15/2003 |
| 6535347 | Head controlling device in a disk apparatus A head-controlling device of a disk apparatus is provided that can precisely move a head stepwise to the position of each track on a recording surface of a disk. When detection output values A1 and B1 of phases A and B that are out of phase satisfy a rela... | 03/18/2003 |
| 6504667 | Magnetic disk unit and method of manufacture thereof A magnetic disk unit which can provide a sufficient PD output of laser beams for optical tracking. The magnetic disk unit comprises a diffraction grating for splitting laser beams from a laser source into a plurality of beams; an aperture for narrowing a ... | 01/07/2003 |
| 6476995 | Method and apparatus for reducing track misregistration from servo track writing An HDA includes a base, a disc stack coupled to a spindle rotatably attached to the base by a spindle shaft and spindle bearing. An actuator assembly is pivotally attached to the base at a pivot shaft. Attached to one end of the actuator assembly proximal... | 11/05/2002 |
| 6421195 | Magnetic disk media with patterned sections A magnetic disk medium patterned linear magnetic channels in a radial direction of the disk is employed in a magnetic disk drive unit. The magnetic channels are patterned by high-resolution patterning techniques and are separated by channel boundaries to ... | 07/16/2002 |
| 6414807 | Method and apparatus for optically sensing accurate clock patterns A disk drive system is described for forming and reading precise optically detectable patterns on rotating members of a disk and spindle assembly used in data storage system. In particular the invention describes a magnetic disk drive employing a laser sy... | 07/02/2002 |
| 6407877 | Recording/reproducing method and apparatus in which head driver is unlocked when medium is loaded and when track position information formulation based on optical signal input has been completed In a recording/reproducing apparatus, a controller includes a counter responsive to incoming track feed requesting pulses to count the number of the pulses, a head movable state detection unit for detecting a movable state of a magnetic head, and a track ... | 06/18/2002 |
| 6324026 | Readable indelible mark on storage media A storage media is disclosed and comprises a storage body and a readable indelible mark formed in the body such that portions thereof are indelibly altered. The mark is read by writing first data to the body in the region of the mark, and reading second d... | 11/27/2001 |
| 6307702 | Method of writing servo tracks on magnetic disc and device for the same The method of the present invention is capable of shortening the time required for positioning an inner actuator and writing servo track signals on a magnetic disc, and improving the quality of the written servo track signals. The amount of displacement b... | 10/23/2001 |
| 6304404 | Recording medium driving apparatus and tracking method A recording/reproducing method and apparatus having the function of tracking a head on a data track formed on a recording medium of a lower-order specifications and on a data track formed on a recording medium of the upper-order specifications. During cal... | 10/16/2001 |
