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7436621 Azimuth compensation using combination bump pes detection  
An example embodiment provides for an apparatus and method, for use in a tape drive system, that supplies tape azimuth error information transduced from servo read elements that are located on...
7420758 Head system, recording and reproduction system, and magnetic recording method  
Disclosed is a head system including a plurality of recording heads for azimuth recording. The system includes a first recording head having a plurality of magnetic gaps having a first azimuth...
7379257 Magnetic disk drive  
A magnetic disk drive includes an actuator arm, a suspension fixed to a tip end of the actuator arm, and a head slider having at least two electromagnetic transducers mounted at a tip end of the...
7239472 Method and apparatus for writing data in a disk drive  
According to one embodiment, there is to provide a data write method which is applied to a disk drive, for recording data on a disk medium by a head mounted on a rotary type actuator. The method...
7193807 Method and apparatus for reducing effective track width through highly skewed head angles  
A disk drive provides increased read and write element widths and tolerances, and also provides reduced track widths. The head with the read and write elements has a large skew angle relative to...
7173785 Data storage device and servo information writing method  
Provided is a data storage device in which read and write heads can be desirably located with respect to servo tracks from the viewpoint of linearity of a PES on the premise that a read write...
7158338 Servo track having periodic frames of tone field and embedded synchronization marks  
Methods and systems for sensing a position of a transducer head with respect to a storage medium. One method includes generating a read signal from a servo track stored on a magnetic storage...
7142389 Tape drive  
A tape drive of the present invention records data on a tape having a plurality of servo bands, where a servo signal is recorded in advance along a longitudinal direction, and a data band...
7123432 Servo writer with adjustment mechanism  
Disclosed is a low-cost servo writer with a simple adjusting mechanism, which can record/reproduce servo signals on or from magnetic tapes precisely, and which makes it possible to shorten the...
7095582 Magnetic tape drive  
A magnetic tape drive has a servo head for performing the tracking control and a head unit. The head unit includes a recording head group composed of a plurality of recording heads, which are lined...
7092198 Access performance adjusting method and storage apparatus  
An access performance adjusting method is adapted to a storage apparatus having a storage to prestore a skew quantity that is used to shift a data write starting position of each track of a...
7072136 Method and apparatus for dynamically establishing pitch static attitude in hard disk drive  
A hard disk drive dynamically establishes a pitch static attitude (PSA) of a slider as appropriate to be higher during load and unload and lower during operation. Also, the PSA may be dynamically...
7009801 Method and apparatus for dynamically establishing roll static attitude in hard disk drive  
A hard disk drive establishes a roll static attitude (RSA) of a slider during operation to be zero during normal operation and to be non-zero during load/unload from a ramp. Specifically, a RSA...
7009794 Magnetic recording and reproducing device  
In a magnetic recording and reproducing device having a 1 ch head and a 2 ch head, an azimuth recording operation is carried out on an obliquely evaporated magnetic tape. Angles θ 1 and θ 2 ...
6989949 Performance test method of head gimgal assembly with precise positioning actuator  
A method of testing a performance of the HGA has a step of writing information from the at least one thin-film magnetic head element onto a magnetic disk with driving the actuator for displacement...
6987637 Magnetic recording system which eliminates skew angle effect  
A perpendicular magnetic recording system is provided which eliminates unwanted side writing to adjacent recording tracks due to the skew angle effect. The system includes a perpendicular magnetic...
6967810 System and method for writing HDD depending on direction of head skew  
Data is written to a hard disk drive using shingled writing principles, i.e., each data track is partially overwritten when an immediately contiguous data track is written. Two or more contiguous...
6965490 Multi-channel head position controlling apparatus and method of controlling position of multi-channel head  
A multi-channel head position control apparatus and a method of controlling the position of the multi-channel head in which even if the width of a tape-like recording medium is changed, each of...
6950256 Magnetic storage medium, method for controlling track pitch thereof, and magnetic recorder for medium  
A magnetic storage medium is configured to store data along tracks on a disk-shaped storage medium. A distance between the tracks adjacent to each other in a radius direction of the storage medium...
6947247 Large angle azimuth recording and head configurations  
Large angle azimuth recording methods and devices. In one aspect of the invention methods of recording one or data tracks having data transitions oriented at a large azimuth angle are provided. In...
6943969 Method of detecting protrusion on recording medium and detecting apparatus therefor  
An acoustic emission sensor is mounted on a flying slider opposed to a rotating recording medium, for example. The acoustic emission sensor outputs a detection signal in response to the sound of...
6937425 Head-track alignment  
A head-track alignment system and method. An embodiment of the system comprises: a head assembly capable of detecting arrival of servo frames in a first and second servo track of a tape; an...
6937421 Patterned media having offset tracks  
An information recording system includes a storage medium, such as a magnetic or an optical medium, that is formed to have a plurality of adjacent tracks. Each track includes a plurality of storage...
6922301 Positioner of a disk drive that positions a data transducer with reduced vibration  
A disk drive includes a head stack assembly having a storage disk, a data transducer, an actuator pivot center and a positioner. The positioner includes a magnet assembly, a primary coil array that...
6898045 Media with pre-recorded alignment transitions  
A device for precision alignment of a write element of a tape head to a transport direction of a media that is transported across the tape head is disclosed. The tape head includes at least one...
6873488 Enhanced MR offset with dynamic tuning range  
A reader-to-writer offset for a head positioned over a track on a disc in a disc drive having a plurality of tracks is generated by using two iterations. A first iteration is used to determine a...
6839193 Method and apparatus for determining read-to-write head offset of a disk drive  
A method for optimizing the read-to-write offset of a disk drive system in respect of a track is provided. In one aspect the method includes the step of determining a first read position amongst a...
6781784 Reading tape with transverse distortion  
Magnetic tape experiencing transverse distortion may be read by selecting between longitudinally offset read elements to read a data track. The read elements are part of a tape head having an...
6778343 Method, apparatus and storage system having storage media with different track pitch based upon a width of a write element associated therewith  
A method and apparatus is disclosed for providing a track pitch on a recording surface that is associated with the width of the tracks written by the write element of a head therefore reducing the...
6754030 Optimal reader-to-writer offset measurement of a head in a disc drive for reduced track misregistration  
A method of and apparatus for generating a reader-to-writer offset for a head positioned over a track on a disc in a disc drive having a plurality of tracks is disclosed. A reader and a writer are...
6728054 Drive with adaptive data format and head switch sequencing  
A system for adapting head switching sequence in a disc drive includes a method of measuring the time duration for a head switch operation and the time duration of a track switch operation. The...
6724561 Apparatus and method for compensating for environmental effects on media  
An apparatus and method for compensating for environmental effects on media. The apparatus includes an array of servo readers that are positioned at a non-zero azimuth angle relative to a medium....
6724559 Magnetic tape unit  
A magnetic tape unit includes a magnetic tape provided with a plurality of tracks, a magnetic head for writing or reading data from the tape, a position determiner for monitoring the relative...
6714369 Method and apparatus for writing clock data to a storage medium  
A first clock track is written to a data storage region of a storage medium at a first position between first and second boundaries. A first set of further clock tracks is written to other...
6700729 Alignment marks for tape head positioning  
A device for precision alignment of a write element of a tape head to a transport direction of a media that is transported across the tape head is disclosed. The tape head includes at least one...
6687069 Methods, apparatus and program products for determining off-track time shift estimates to be used in writing timing patterns on a storage medium  
Off-track time shift estimates are determined and used in order to write subsequent trigger patterns on a storage medium at different track pitches. Various procedures for determining an off-track...
6671790 Optimizing reader to writer offset compensation for a disc drive  
A method for optimizing logical track to physical track offset compensation of a data storage device includes steps of: associating each of a plurality of logical tracks to one of a plurality of...
6650496 Fully integrated matrix magnetic recording head with independent control  
A matrix array of recording heads, wherein each head is independent from another both in terms of its magnetic circuit and excitation conductors. Each individual head has a planar magnetic circuit...
6545837 Method and apparatus for servo controlled azimuth data recording  
A system for increasing areal recording density in linear magnetic recording systems employs a continuous servo track and an azimuth recording technique. The system comprises multiple motors that...
6538836 Microactuator for fine positioning in a disc drive  
An actuator arm assembly is provided in a disc drive. The disc drive includes a disc with a surface for storing information and a first actuator for moving the actuator arm assembly relative to the...
6437947 Magnetic disk, magnetic recording and reproducing method and magnetic disk unit  
Signals are recorded on and reproduced from a magnetic disk by a head with an azimuth angle which changes depending on a radial position on the magnetic disk. The magnetic disk includes a first...
6424485 Adaptive skew settings for a disk drive  
A method for improving disk drive performance by adaptively calculating skew values for each drive. During a production phase of the disk drive manufacturing process, skew values are calculated...
6412058 Adaptive head address re-map for data storage devices  
A system, method, and article of manufacture for adaptive re-mapping of head addresses in a data storage device. A logical address received by the data storage device is converted into a...
6411453 Methods, apparatus and program products for determining off-track time shaft estimates to be used in writing timing patterns on a storage medium  
Off-track time shift estimates are determined and used in order to write subsequent trigger patterns on a storage medium at different track pitches. Various procedures for determining an off-track...
6404572 Circuit and method for generating a write precompensation signal  
A circuit that generates a write precompensation delay signal includes a precoder, a delayed clock pulse selector, a delayed clock pulse generator, and a non-return-to-zero (NRZ) modulator. A...
6366422 Helical scan tape drive error recovery using track profile mapping  
It is difficult to read data from curved helical data tracks in a helical scan tape drive. Curved helical tracks can be caused by improper tape tension, tape damage, tape path misalignment, tape...
6341102 Data writing/reading apparatus  
A data handling apparatus is provided which includes a rotatable disk provided with at least an innermost track and an outermost track for storing data, and a disk cartridge for housing the disk....
6331920 Backward compatible head and head positioning assembly for a linear digital tape drive  
A tape recording and playback unit records and reads back data from tape either in a high track density standard format or alternatively reads back data from a tape previously recorded on another...
6292320 Disk drive with dual stage actuator radial offset calibration  
In a disk drive having a dual stage actuator, a method to improve head switching time by aligning a target head with a target track before a head switch occurs by using a second stage actuator...
6285519 Flat servo bursts for arcuate track scanner  
To control operations of an arcuate scanning head assembly, servo signals are written in one or more designated servo regions along a recording tape, for example along one or both edges of the...
Matches 1 - 50 out of 177 1 2 3 4 >