| Patent Number |
Title Of Patent |
Date Issued |
| 7522506 |
Memory |
April 21, 2009 |
| A memory that includes a controller and a media including first information is provided. A first read/write mechanism is provided including an electron emitter configured to read the first information. The controller is configured to receive a first signal generated in response to th |
| 7380050 |
Parallel data storage device |
May 27, 2008 |
| A parallel data storage device includes a data storage medium having a first cluster and a second cluster. The first cluster includes a first patch and the second cluster includes a second patch. The parallel data storage device also includes a first reader for reading the first patch |
| 7333291 |
System and method for reducing tracking noise in a tape drive |
February 19, 2008 |
| There is provided a system and a method for reducing noise in a tape drive. More specifically, in accordance with one embodiment, there is provided a method of writing servo stripes comprising energizing a left servo gap while not energizing a right servo gap; energizing the left ser |
| 7280779 |
Image banding compensation method |
October 9, 2007 |
| An image forming method includes measuring an electrical potential on a surface of a developer roller and adjusting a time varying component of a voltage applied to the developer roller using a measurement of the electrical potential. |
| 7268970 |
Method and apparatus for storing data on magnetic tape |
September 11, 2007 |
| Electromagnetic tape head position is adjusted according to vibration indicative information received from vibration sensor secured to tape transport mechanism that supports the tape head. |
| 7208857 |
Drive calibration method and system |
April 24, 2007 |
| A method and system of calibrating a drive includes changing an electrode voltage between a first set of electrodes and a second set of electrodes in the drive divided by an electrode gap, determining a threshold voltage for the electrode voltage at which an electrostatic attractive forc |
| 7148549 |
Data storage module suspension system |
December 12, 2006 |
| A micro-electro-mechanical device includes a moveable mass supported within a frame. To support the mass within the frame, a first flexure extends between the mass and the frame. An angle softening element is positioned between a first end of the first flexure and the frame to allow |
| 7142500 |
Sensor with varying capacitance based on relative position between objects |
November 28, 2006 |
| A position sensor for use in connection with a movable system having a pair of objects that are configured to move relative to one another along an axis through an operative range of motion. The position sensor includes a first plate secured to one of the objects and a pair of second |
| 7057301 |
Semiconductor wafer |
June 6, 2006 |
| A semiconductor wafer is disclosed. The semiconductor wafer includes a wafer body. The wafer body includes an electrostatic force generating arrangement for assisting in an alignment of the wafer body with respect to another wafer body. |
| 6996051 |
Data storage module suspension system having primary and secondary flexures |
February 7, 2006 |
| A micro-electro-mechanical device includes a moveable mass supported within a frame. To support the mass within the frame, a first flexure extends between the mass and the frame. An angle softening element is positioned between a first end of the first flexure and the frame to allow |
| 6911792 |
System and method for controlling movement |
June 28, 2005 |
| A system and method for controlling movement of a body includes a position-based velocity profile, at least one mover, a data processor for calculating a next position of the at least one mover using data from the position-based velocity profile and passing a next position signal to the |
| 6775223 |
Systems for controlling storage device emitters |
August 10, 2004 |
| Memory storage devices that employ atomic resolution storage technology are provided. A preferred memory storage device includes a storage medium that defines one or more coverage areas. Each of the coverage areas incorporates a storage area that is configurable in one of a plurality of |
| 6747863 |
Electrostatic drive |
June 8, 2004 |
| An electrostatic drive having a plurality of mover electrodes operatively secured to a mover, and a plurality of stator electrodes operatively secured to a stator. The mover and stator are configured to move relative to each other via electrostatic force generated between the mover e |
| 6747462 |
Method and system for determining position of a body |
June 8, 2004 |
| A method for determining the position of a rotor with respect to a stator. The method includes generating offset N and Q signals when the rotor moves with respect to the stator and sampling the N and Q signals at a predetermined time interval. A section of a polar plot in which the N and |
| 6657444 |
Capacitance-based position sensor with integrating demodulator |
December 2, 2003 |
| A capacitance-based position sensor configured to sense relative position of a pair of objects. The sensor includes capacitor circuitry having a capacitor that varies in capacitance with relative position of the pair of objects. A source is coupled to the capacitor circuitry, and is conf |
| 6600616 |
Method for reduction of off-track errors or write failures in data storage tape systems |
July 29, 2003 |
| Embodiments of a data storage tape control system and methods are disclosed that may work to correct off-track errors, reduce the frequency of off-track errors, and/or reduce the negative effects of off-track errors in writing performance. The invented method slows tape speed in response |
| 6563659 |
Method and apparatus for servo code based tape tension measurement |
May 13, 2003 |
| A tape drive for use with a magnetic recording tape, the tape drive including a system for determining the amount of tension on the magnetic recording tape, the magnetic recording tape having a length in the direction of tape travel and a width in the direction perpendicular to the l |
| 6509620 |
Flexure coupling block for motion sensor |
January 21, 2003 |
| A microelectromechanical system (MEMS) device is disclosed for determining the position of a mover. The MEMS device has a bottom layer connected to a mover layer. The mover layer is connected to a mover by flexures. The mover moves relative to the mover layer and the bottom layer. The fl |
| 6504385 |
Three-axis motion sensor |
January 7, 2003 |
| A microelectromechanical system (MEMS) motion sensor is disclosed for detecting movement in three dimensions of a semiconductor wafer structure. The MEMS device has top, middle, and bottom layers, with a mover attached to the middle layer by a flexure that allows the mover to move in thr |
| 6411460 |
Postponable servo code selection |
June 25, 2002 |
| A servo writer for writing servo code to a magnetic tape having a width, the servo writer comprising a tape head including a plurality of write elements and being configured to write servo code to a plurality of bands across substantially the entire width of the tape. A method comprising |
| 6172837 |
Postponable servo code selection |
January 9, 2001 |
| A servo writer for writing servo code to a magnetic tape having a width, the servo writer comprising a tape head including a plurality of write elements and being configured to write servo code to a plurality of bands across substantially the entire width of the tape. A method comprising |
| 6169640 |
Servo band identification in linear tape systems having timing based servo formats |
January 2, 2001 |
| Disclosed herein is a method of formatting timing based servo bands, as used in linear data tape systems, in a way that allows differentiation between different adjacent pairs of servo bands. Each servo band is recorded with a similar or identical timing based pattern. However, the p |
| 6124996 |
Servo system and method with multiple phase clock |
September 26, 2000 |
| A timing-based servo system for positioning a magnetic head relative to a magnetic storage medium, the magnetic storage medium having a servo pattern written thereon, the system comprising a head including a servo read element configured to read the servo pattern and produce a signal, |
| 6122124 |
Servo system and method with digitally controlled oscillator |
September 19, 2000 |
| An adaptive media speed drive unit for use with a magnetic storage medium, the magnetic storage medium having a timing based servo pattern written thereon, the servo pattern including transitions, the drive unit including a magnetic head including a servo read element configured to read |
| 6111719 |
Linear speed measurement independent of lateral position in linear tape systems |
August 29, 2000 |
| A linear tape system has a tape head to read and write a linear data storage tape. As the tape moves in a longitudinal direction, the tape head senses magnetic transition stripes in longitudinal servo bands to control the lateral position of the tape head relative to the tape. The system |
| 6031673 |
Servo band verification in linear tape systems having timing-based servo formats |
February 29, 2000 |
| A device for formatting a linear data storage tape includes a servo write head configured to write a pattern of magnetic transition stripes along a servo band of the linear data storage tape. The servo write head is configured to produce stripes having lateral widths that are significant |
| 5999359 |
Head positioning system with photosensor |
December 7, 1999 |
| A head positioning system achieves higher track alignment accuracy for audio, video, or data recording or playback. In a digital tape drive embodiment, the positioning system includes a servo read head for receiving conventional servo code from the tape, a voice coil motor that moves |
| 5995315 |
Servo system for following a magnetic track having identifying pulse widths |
November 30, 1999 |
| A servo system positions a read head for following a magnetic tape track by determining position information from a composite signal read from the tape by the read head. The servo system includes the read head, a discriminator circuit that provides a drive signal in response to the c |
| 5982711 |
Device for reading data from or writing data to magnetic storage media and a method of positioni |
November 9, 1999 |
| A device for reading data from or writing data to magnetic storage media, the device comprising a head having a plurality of read/write elements for reading data from or writing data to magnetic storage media in respective tracks, and a plurality of servo elements for reading servo code |
| 5939707 |
Circuit for lateral photoeffect position sensor |
August 17, 1999 |
| A circuit provides a normalized position signal in response to a position of an illuminated spot on a lateral effect photosensor. The photosensor provides a concurrent pair of analog signals. The spot is illuminated by a light emitting diode. The circuit includes a summing circuit that p |
| 5880456 |
Circuit provides a normalized position signal for lateral photoeffect position sensor |
March 9, 1999 |
| A circuit provides a normalized position signal in response to a position of an illuminated spot on a lateral effect photosensor. The photosensor provides a concurrent pair of analog signals. The spot is illuminated by a light emitting diode. The circuit includes a summing circuit that p |
| 5041926 |
Track position syncopation cancellation in a disk drive |
August 20, 1991 |
| A linear or rotary disk memory drive having provision for compensating or cancelling track position syncopation. Due to interference among the magnetic fields of magnetic dibits recorded in and adjacent to a servo code field in a magnetic memory disk, magnetic field intensities are d |
| 4700244 |
Process and system for compensating for information shifts on disc storage media |
October 13, 1987 |
| An improved system and process is provided in a disc drive for determining and for compensating head/track offsets when a data (target) head is moved to a new data (target) track position. Such disc drives typically include an armstack with transducer heads thereon, either pivotally or l |
