公开(公告)号：US12094503B1

公开(公告)日：2024-09-17

申请号：US18364759

申请日：2023-08-03

Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.

Inventor： Guoxiao Guo ,  Jason Laks ,  Charles A. Park ,  Scott A. Ottele ,  Gary Herbst

IPC: G11B5/55

CPC classification number: G11B5/5547

Abstract: Example storage medium servo patterns, data storage devices, and methods to provide servo tracks with continuously varying frequency in a data storage device are described. The data storage device may include storage media, such as magnetic disks, having servo sectors that define servo tracks, where adjacent servo tracks have continuously varying frequency as the head moves from one servo track to the next. As the head is actuated over the storage medium, a target track frequency may be determined based on the radial position of a target servo track and the channel frequency may be set to the target track frequency to follow the target servo track.

公开(公告)号：US09286925B1

公开(公告)日：2016-03-15

申请号：US14669994

申请日：2015-03-26

Applicant: Western Digital Technologies, Inc.

Inventor： Stanley H. Shepherd ,  Yakov M. Lifschitz ,  Min Chen ,  Guoxiao Guo ,  Jason Laks

IPC: G11B5/09 ,  G11B27/36 ,  G11B5/596

CPC classification number: G11B5/59627 ,  G11B5/59688

Abstract: A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of servo tracks defined by servo bursts. The head is positioned at a first radial location over the disk and a first burst correction value is generated by reading at least one of the servo bursts. The head is positioned at a second radial location over the disk and a second burst correction value is generated by reading at least one of the servo bursts. The head is positioned at a third radial location over the disk and the first burst correction value and the second burst correction value are written at the third radial location. The head is servoed over the disk by reading the first and second burst correction values.

Abstract translation: 公开了一种数据存储装置，其包括在盘上致动的磁头，该磁头包括由伺服脉冲串定义的多个伺服磁道。 头部位于盘的第一径向位置，并且通过读取至少一个伺服脉冲串来产生第一突发校正值。 头部位于盘的第二径向位置，并且通过读取至少一个伺服脉冲串来产生第二突发校正值。 头部位于盘的第三径向位置，并且第一突发校正值和第二突发校正值被写入第三径向位置。 通过读取第一和第二突发校正值来将磁头伺服在磁盘上。