公开(公告)号：US09099155B1

公开(公告)日：2015-08-04

申请号：US14448844

申请日：2014-07-31

Applicant: Seagate Technology LLC

Inventor： Abhay Kataria ,  Michael D. Schaff ,  Sandeep Bhushan ,  Kevin M. Bailey ,  Phillip Kevin McGinnis ,  Mai Ghaly

IPC: G11B27/36 ,  G11B5/09 ,  G11B20/10 ,  G11B5/02 ,  G11B5/55 ,  G11B20/18

CPC classification number: G11B20/18 ,  G11B5/02 ,  G11B5/5565 ,  G11B20/10009 ,  G11B27/36

Abstract: Apparatus and method for adaptively mitigating adjacent track interference (ATI) effects on a data recording medium. In some embodiments, a write count value is accumulated for a first track responsive to successive writes to a second track on the data recording medium. For each of the successive writes, the accumulated write count value for the first track is incremented by a different variable amount based on temperature. The first track is refreshed responsive to the accumulated write count reaching a selected threshold value.

Abstract translation: 用于自适应地减轻对数据记录介质的相邻轨道干扰（ATI）影响的装置和方法。 在一些实施例中，响应于对数据记录介质上的第二磁道的连续写入，针对第一磁道累积写入计数值。 对于每个连续写入，基于温度，第一轨道的累积写入计数值增加不同的可变量。 响应于达到所选择的阈值的累积写入次数来刷新第一轨道。

公开(公告)号：US09984256B2

公开(公告)日：2018-05-29

申请号：US14900962

申请日：2014-05-15

Applicant: SEAGATE TECHNOLOGY LLC ,  Hong Liu ,  Abhay Kataria ,  Chao Chen ,  WeiWei Feng ,  Monty Forehand ,  William Erik Anderson

Inventor： Hong Liu ,  Abhay Kataria ,  Chao Chen ,  WeiWei Feng ,  Monty A. Forehand ,  William Erik Anderson

IPC: G06F1/26 ,  G06F11/00 ,  G08B13/00 ,  G08B21/00 ,  G08B29/00 ,  G06F21/73 ,  G06F21/57 ,  G06F21/86 ,  G06F21/79 ,  G06F21/80

CPC classification number: G06F21/73 ,  G06F21/57 ,  G06F21/78 ,  G06F21/79 ,  G06F21/80 ,  G06F21/86

Abstract: Apparatus and method for detecting unauthorized tampering with a data storage device having a housing and a memory. A first identifier value is stored on an external surface of the housing and a second identifier value is stored within the memory. The first and second identifier values are combined in a predetermined order to form a combined identifier value for which a digital signature is generated using a private key, and the digital signature is stored on the storage device. The digital signature, the first and second identifier values, and one or more dummy identification values are retrieved from the storage device and stored in a memory of a verification device, which combines the retrieved first and second identifier values in the predetermined order to generate a retrieved combined identifier value. The storage device is authenticated using the retrieved combined identifier value, the digital signature and a public key.