公开(公告)号：US11380356B2

公开(公告)日：2022-07-05

申请号：US17218810

申请日：2021-03-31

Applicant: Seagate Technology LLC

Inventor： Phan Linh Nguyen ,  Chi Sern Georgie Tan ,  Qiang Bi ,  Joshua W. Christensen ,  Song Wee Teo ,  Wei Chen Lau ,  Heather Lee Mallett ,  Renee Depew ,  David Allan Thorsvik ,  Tze Pin Chin ,  Jose Mari Toribio

IPC: G11B5/09 ,  G11B5/596 ,  G11B20/12 ,  G11B20/10 ,  G11B33/12

Abstract: The technology disclosed herein provides a method for generating an on-cylinder limit (OCLIM), the method including performing servo certification of a plurality of drives in a storage device to generate servo adaptive parameters (SAPs) by heads, generating a plurality of read adjust parameters (RAPs) by heads for the plurality of drives, generating an interim OCLIM value based on the SAPs by heads and RAPs by zones, and operating a disc drive write element using the interim OCLIM value.

公开(公告)号：US10997996B1

公开(公告)日：2021-05-04

申请号：US16916786

申请日：2020-06-30

Applicant: Seagate Technology LLC

Inventor： Phan Linh Nguyen ,  Chi Sern Georgie Tan ,  Qiang Bi ,  Joshua W. Christensen ,  Song Wee Teo ,  Wei Chen Lau ,  Heather Lee Mallett ,  Renee Depew ,  David Allan Thorsvik ,  Tze Pin Chin ,  Jose Mari Toribio

IPC: G11B5/09 ,  G11B5/596 ,  G11B20/12 ,  G11B20/10 ,  G11B33/12

Abstract: The technology disclosed herein provides a method for generating an on-cylinder limit (OCLIM), the method including performing servo certification of a plurality of drives in a storage device to generate servo adaptive parameters (SAPs) by heads, generating a plurality of read adjust parameters (RAPs) by heads for the plurality of drives, generating an interim OCLIM value based on the SAPs by heads and RAPs by zones, and operating a disc drive write element using the interim OCLIM value.

公开(公告)号：US09865296B1

公开(公告)日：2018-01-09

申请号：US15263679

申请日：2016-09-13

Applicant: Seagate Technology LLC

Inventor： Tze Pin Chin ,  Tanghe Guo ,  Feng Shen

IPC: G11B11/00 ,  G11B7/1267 ,  G11B5/55 ,  G11B7/1263 ,  G11B20/18 ,  G11B5/00 ,  G11B7/126

CPC classification number: G11B5/5521 ,  G11B7/126 ,  G11B20/10481 ,  G11B2005/0021

Abstract: A storage device performs a background operation involving seeking a read/write head between inner and outer diameters of a disk of the storage device. During the seeking, adjacent test tracks are written at a diameter between the inner and outer diameters of the disk. The adjacent test tracks are written using varying levels of laser power applied to the disk via the read/write head. An optimum value of the laser power is determined based on reading at least one of the adjacent test tracks.