A magnetic recording medium according to the present technology is a tape-shaped magnetic recording medium including: a base material; and a magnetic layer, the tape-shaped magnetic recording medium being long in a longitudinal direction and short in a width direction, in which the magnetic layer includes a data band long in the longitudinal direction and a servo band long in the longitudinal direction, a data signal being written to the data band, a servo signal being written to the servo band, the degree of perpendicular orientation of the magnetic layer being 65% or more, a full width at half maximum of an isolated waveform in a reproduced waveform of the data signal is 185 nm or less, a thickness of the magnetic layer is 90 nm or less, and a thickness of the base material is 4.2 μm or less.

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.

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.

The present disclosure generally relates to a tape drive comprising a tape head and control circuitry. The tape head comprises a plurality of data elements, each data element including a write transducer and a read transducer. The control circuitry is configured to control the tape head to write at least three different frequency preamble tones prior to writing data to data tracks of a tape. A different preamble tone is written to adjacent data tracks of the tape. The data elements of the tape head are each configured to read one or more preamble tones prior to writing data to or reading data from the tape. The control circuitry is then configured to extract a signal content from each preamble tone read by each data element, and determine an optimized positioning for the tape head with respect to the tape to reduce alignment errors.

An apparatus, according to one approach, includes an inner array of data transducers on a module, the data transducers of the inner array being aligned along a common axis that extends between distal ends of the module. Two outer arrays of data transducers are positioned on the module to sandwich the inner array therebetween. Inner servo readers are positioned between the inner array and the outer arrays. Outer servo readers are positioned toward outer ends of the outer arrays. A method, according to one approach, includes passing a magnetic recording tape having a plurality of data bands over a module as described above. Data on two of the data bands is simultaneously transduced (read and/or written) using the data transducers of the inner and outer arrays. Thus, the bandwidth of the data operation can be increased, e.g., effectively doubled.

A servo writer includes a writing head that writes a servo signal on a long magnetic tape that is traveling and at least two first guide rollers that guide the travel of the magnetic tape, in which the at least two first guide rollers on which a spiral groove is provided have a circumferential surface that has contact with the traveling magnetic tape, tensile forces act on the magnetic tape from the at least two first guide rollers in a width direction of the traveling magnetic tape, and the tensile forces that act on the magnetic tape from the at least two first guide rollers cancel each other.

Embodiments of the present disclosure generally relate to tape drives used for magnetic recording on tapes, and more specifically to tape heads including servo and data head structures. A tape head includes a plurality of servo head structures and one or more piezoelectric devices. The one or more piezoelectric devices are utilized to control the spacing and dimensions between the plurality of servo head and data head structures. The one or more piezoelectric devices further allow the tape head to receive active feedback from the tape drive, allowing the one or more piezoelectric devices to correct any errors during operation.

The present disclosure generally relates to a tape drive. The tape drive comprises a first tape head and a second tape head linearly aligned with one another, where the first tape head and the second tape head are configured to concurrently operate. The first tape head and the second tape head each comprise a plurality of write transducers, a plurality of read transducers, and a plurality of servo transducers. The tape drive further comprises a first actuator coupled to the first tape head and a second actuator coupled to the second tape head. The first and second actuators are configured to independently tilt and move the first and second tape heads, respectively. Tilting and moving the first and second tape heads individually enables the tape drive to compensate for non-linear tape dimensional stability effects.

The present disclosure is generally related to a tape drive comprising a tape head and a controller coupled to the tape head. The tape head comprises one or more modules, each module comprising a plurality of write heads aligned in a first row, a plurality of read heads aligned in a second row parallel to the first row, and at least four first servo heads aligned in the second row. Two or more first servo heads of the at least four first servo heads are configured to concurrently read first servo data from a first servo track. The controller is configured to concurrently process the first servo data, to compute the position of the tape head based on a known spacing between the at least two servo heads, and to dynamically adjust a position of the tape head based on the processed first servo data.

A tape drive allows for an increased track density by partially overlapping adjacent tracks as each successive track is written. Each successive track overwrites a portion of the width of the previous track, thereby reducing the width of the previous track. This process can be applied repeatedly thereby producing an arrangement of shingled data tracks across the width of the tape. In an embodiment, single-pass verification of data written in this manner is accomplished using a head assembly with two read heads per track. A first read head positioned behind the write head verifies that the data written is correct, and a second read head positioned over the previous track verifies that data on the previous track remains intact after being partially overwritten.