公开(公告)号：US20160322074A1

公开(公告)日：2016-11-03

申请号：US14701914

申请日：2015-05-01

Applicant: Seagate Technology LLC

Inventor： Ben Niu ,  Lan Xia ,  Fong Kheon Chong ,  Quek Leong Choo ,  Song Wee Teo

IPC: G11B5/596 ,  G11B5/09

CPC classification number: G11B5/59627 ,  G11B5/09 ,  G11B5/59688 ,  G11B20/1037 ,  G11B20/182 ,  G11B2020/1238 ,  G11B2220/2508

Abstract: The disclosed technology provides techniques for mitigating write-to-write bit error rate fluctuations that decrease accuracy of write precompensation (WPC) tuning According to one implementation, such write-to-write bit error rate fluctuations are mitigated if a predetermined pattern is written at a particular radial offset from a target data track prior to testing a WPC register in association with the target data track. Selection of the particular radial offset can be performed according to an iterative offset track clean-up disclosed herein.

Abstract translation: 所公开的技术提供了用于减轻写入 - 写入误码率波动以降低写入预补偿（WPC）调整精度的技术。根据一个实现方式，如果将预定模式写入，这种写入到写入误码率波动将被缓解 在与目标数据轨道相关联地测试WPC寄存器之前，与目标数据轨道的特定径向偏移。 可以根据本文公开的迭代偏移轨道清理来执行特定径向偏移的选择。

公开(公告)号：US09495987B1

公开(公告)日：2016-11-15

申请号：US14701914

申请日：2015-05-01

Applicant: Seagate Technology LLC

Inventor： Ben Niu ,  Lan Xia ,  Fong Kheon Chong ,  Quek Leong Choo ,  Song Wee Teo

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

CPC classification number: G11B5/59627 ,  G11B5/09 ,  G11B5/59688 ,  G11B20/1037 ,  G11B20/182 ,  G11B2020/1238 ,  G11B2220/2508

Abstract: The disclosed technology provides techniques for mitigating write-to-write bit error rate fluctuations that decrease accuracy of write precompensation (WPC) tuning. According to one implementation, such write-to-write bit error rate fluctuations are mitigated if a predetermined pattern is written at a particular radial offset from a target data track prior to testing a WPC register in association with the target data track. Selection of the particular radial offset can be performed according to an iterative offset track clean-up disclosed herein.

Abstract translation: 所公开的技术提供了减轻写入 - 写入误码率波动的技术，这降低了写入预补偿（WPC）调整的精度。 根据一个实现方式，如果在与目标数据轨道相关联地测试WPC寄存器之前在与目标数据轨道的特定径向偏移上写入预定模式，则可以减轻这种写入到写入误码率波动。 可以根据本文公开的迭代偏移轨道清理来执行特定径向偏移的选择。