G11B21/006

Hybrid Dedicated and Dynamic Servo for Tape

The present disclosure generally relates to a tape head and a tape drive including a tape head. The tape head comprises servo heads configured to read servo data from a tape, a plurality of write heads configured to: write user data to a plurality of data tracks of the tape and write embedded servo data into one or more data fields of the tape, the embedded servo data comprising servo positioning information, and a plurality of read heads configured to read the user data and the embedded servo data from the tape. The embedded servo data may be embedded servo fields or embedded servo tracks. The embedded servo data allows the tape head to be accurately controlled and positioned above the tape, and for new data to be accurately appended to the tape.

Hybrid dedicated and dynamic servo for tape

The present disclosure generally relates to a tape head and a tape drive including a tape head. The tape head comprises servo heads configured to read servo data from a tape, a plurality of write heads configured to: write user data to a plurality of data tracks of the tape and write embedded servo data into one or more data fields of the tape, the embedded servo data comprising servo positioning information, and a plurality of read heads configured to read the user data and the embedded servo data from the tape. The embedded servo data may be embedded servo fields or embedded servo tracks. The embedded servo data allows the tape head to be accurately controlled and positioned above the tape, and for new data to be accurately appended to the tape.

Data storage device using laterally offset read element to compensate for tape stretch

A data storage device configured to access a magnetic tape is disclosed, wherein the data storage device comprises at least one head configured to access the magnetic tape, wherein the head comprises a write element, a first read element substantially aligned with the write element, and a second read element laterally offset from the first read element. Data is written to a data track and read-after-write verify is performed using the write element and the first read element. In response to a read command received from a host, the data track is read using the second read element to compensate for a stretching of the magnetic tape.

DATA STORAGE DEVICE USING LATERALLY OFFSET READ ELEMENT TO COMPENSATE FOR TAPE STRETCH
20220108725 · 2022-04-07 ·

A data storage device configured to access a magnetic tape is disclosed, wherein the data storage device comprises at least one head configured to access the magnetic tape, wherein the head comprises a write element, a first read element substantially aligned with the write element, and a second read element laterally offset from the first read element. Data is written to a data track and read-after-write verify is performed using the write element and the first read element. In response to a read command received from a host, the data track is read using the second read element to compensate for a stretching of the magnetic tape.

Method and system for facilitating low-cost high-throughput storage for accessing large-size I/O blocks in a hard disk drive
10923156 · 2021-02-16 · ·

A system is provided to receive a first request to write data to an HDD which comprises a plurality of platters with corresponding heads, wherein a respective platter includes a plurality of tracks. The system aligns the heads at a same first position on a first track of each platter, and distributes the data as a plurality of data sectors to track sectors located at the same first position on the first track of each platter. The system then receives a second request to read the data from the HDD, and aligns the heads at a same random position on the first track of each platter. Subsequently, the system reads, during a single rotation of the platters, all data stored on the first track of each platter, stores the read data in a data buffer, and reshuffles the read data in the data buffer to obtain the requested data.

Data recording method and apparatus

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.

Data stored using perpendicular and longitudinal magnetic fields over more than two adjacent tracks

A first reader spans first and second tracks of a recording medium and provides a first signal responsive to a first total longitudinal field of the first and second tracks. A second read spans two other tracks, at least one of the two other tracks being different from the first and second tracks. The second reader provides a second signal responsive to a second total longitudinal field of the two other tracks. A third reader spans two or more of the tracks and provides a third signal responsive to a total perpendicular field of the two or more tracks. User data is decoded from the first, second, and third signals.

Data storage device extending servo burst field by alternating servo field processing during writes

A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of servo tracks and a plurality of data tracks defined by the servo tracks. Each servo track is defined by a first set of servo sectors interleaved with a second set of servo sectors, wherein each servo sector comprises a servo burst field. The servo burst field of the first set of servo sectors has a first length and the servo burst field of the second set of servo sectors has a second length longer than the first length. Data is written to a first data track by reading at least one of the second set of servo sectors and skipping the read of at least part of one of the first set of servo sectors, and servoing the head over the first data track in response to reading the second set servo sector.

Portable turntable device, system, and method
09672844 · 2017-06-06 · ·

A turntable device, comprising: a spindle and two arms. The two arms may comprise: a housing; one or more buttons; a spindle engagement portion; a stylus cartridge; a power supply; one or more wireless communication devices; a linear actuator; a motor; and a vertical solenoid. The spindle may receive a phonographic record, and the spindle engagement portion may engage with the spindle, such that the arms are entirely supported via said spindle and only the spindle.

PORTABLE TURNTABLE DEVICE, SYSTEM, AND METHOD
20170125039 · 2017-05-04 ·

A turntable device, comprising: a spindle and two arms. The two arms may comprise: a housing; one or more buttons; a spindle engagement portion; a stylus cartridge; a power supply; one or more wireless communication devices; a linear actuator; a motor; and a vertical solenoid. The spindle may receive a phonographic record, and the spindle engagement portion may engage with the spindle, such that the arms are entirely supported via said spindle and only the spindle.