G11B5/584

Servo writer head design for the rotated servo pattern

The present disclosure is generally related to a servo track writer (STW) head for writing a rotated servo pattern. The STW head comprises a first writer stripe having a first length tilted at a first angle and a second writer stripe having a second length tilted at a second angle. The STW head may be tilted at a non-perpendicular angle relative to the edge of a tape configured to pass under the STW head.

Two-dimensional magnetic recording (TDMR) to counter tape dimensional stability (TDS) errors in a tape media

The present disclosure is generally related to a tape drive including a tape head configured to read shingled data on a tape. The tape head comprises a first module head assembly aligned with a second module head assembly. Both the first and second module head assemblies comprises a plurality of data heads. Each data head comprises a write head, a first read head aligned with the write head, a second read head offset from the first read head in both a cross-track direction and a down-track direction, and a third read head offset from the first and/or second read heads in the cross-track and down-track directions. By utilizing three read heads within each data head, data can be read from a tape that has experienced tape dimensional stability, as at least one read head will be near a center of each data track of the tape.

MAGNETIC RECORDING AND REPRODUCING DEVICE
20230169997 · 2023-06-01 · ·

Provided is a magnetic recording and reproducing device including, in a sealed space in the magnetic recording and reproducing device: a magnetic tape; and a magnetic head are provided, in which a relative humidity difference (RH.sub.C-RH.sub.B) between a relative humidity RH.sub.B in the sealed space measured in an environment of a temperature of 21° C. and a relative humidity of 50% and a relative humidity RH.sub.C in the sealed space measured in an environment of a temperature of 60° C. and a relative humidity of 5% is within ±10%.

MAGNETIC TAPE, MAGNETIC TAPE CARTRIDGE, AND MAGNETIC TAPE DEVICE
20230169996 · 2023-06-01 · ·

The magnetic tape has one or more of each of an area A and an area B having different center line average surface roughness Ra measured on a surface of a magnetic layer in a region over a part of the magnetic tape in a longitudinal direction, with a ratio B.sub.Mag/A.sub.Mag of 1.20 to 10.00 and a ratio B.sub.Mag/B.sub.Back of equal to or greater than 2.0 in a case where extraction amounts per unit area of a component selected from the group consisting of fatty acid, fatty acid ester, and fatty acid amide extracted from a magnetic layer side of the area A and the area B are defined as A.sub.Mag and B.sub.Mag respectively, and an extraction amount per unit area of the above component extracted from a back coating layer side of the area B is defined as B.sub.Back.

DETECTION DEVICE, INSPECTION DEVICE, MAGNETIC TAPE CARTRIDGE, MAGNETIC TAPE, MAGNETIC TAPE DRIVE, MAGNETIC TAPE SYSTEM, DETECTION METHOD, INSPECTION METHOD, AND PROGRAM
20230169992 · 2023-06-01 · ·

A detection device includes a processor. The processor compares a servo band signal, which is a result of reading a servo band in which a servo pattern is recorded from a magnetic tape including the servo band by a servo reading element, with a threshold value to detect a servo pattern signal indicating the servo pattern. The threshold value is determined in accordance with an angle formed by the servo pattern and the servo reading element.

Reading data on a storage medium using magnetization map

To read data from a storage medium, a magnetization map of the data stored on at least one portion of the storage medium is obtained. The magnetization map is analyzed to obtain intermediate data corresponding to the data stored on the at least one portion of storage medium. Further, the intermediate data is converted into the user data based on format emulation of a data storage format of the storage medium. The conversion of the intermediate data includes decrypting the intermediate data to obtain the user data.

Data storage device demodulating servo stripes using matched filter

A data storage device is disclosed comprising at least one head configured to access a magnetic tape comprising a plurality of servo frames each comprising a plurality of servo bursts. A first servo burst is read using the head to generate a read signal which is sampled to generate signal samples. A first matched filter matched to the first servo burst is used to generate filtered samples in response to the signal samples, and at least part of the filtered samples are interpolated to generate interpolated samples. The interpolated samples are processed to generate a position error signal (PES), and a position of the head relative to the magnetic tape is controlled based on the PES.

Data storage device demodulating servo stripes using matched filter

A data storage device is disclosed comprising at least one head configured to access a magnetic tape comprising a plurality of servo frames each comprising an A servo burst, a B servo burst, a C servo burst, and a D servo burst. The A servo burst in a first servo frame is read using the head to generate a first read signal which is sampled to generate first signal samples. A first matched filter matched to the A servo burst filters the first signal samples to generate first filtered samples within a first burst window, and the first burst window is updated based on the first filtered samples. The first filtered samples within the first burst window are processed to generate a position error signal (PES), and a position of the head is controlled relative to the magnetic tape based on the PES.

Skiving block for mitigating protruding defects from magnetic tape recording media

An apparatus according to one embodiment includes a block having multiple skiving edges along a tape bearing surface thereof, and a guide mechanism configured to set a wrap angle of a tape approaching the skiving edge. A drive mechanism is configured to cause the tape to move over the block. The block has no transducer coupled directly thereto. A computer-implemented method according to one embodiment includes causing a magnetic recording tape to pass over a block having a skiving edge at a wrap angle of at least one degree for burnishing the tape, wherein the block has an average hardness of at least about 9 Mohs.

Reducing a noise component associated with movement of a moveable part

An output is generated in response to an indication associated with movement of a moveable part in a storage device. The output is for reducing a noise component associated with the movement of the moveable part.