公开(公告)号：US10061088B1

公开(公告)日：2018-08-28

申请号：US15831722

申请日：2017-12-05

Applicant: Seagate Technology LLC

Inventor： Chubing Peng

IPC: G11B11/00 ,  G02B6/35 ,  G11B5/48 ,  G11B11/105 ,  G11B13/04 ,  G02B6/02 ,  G02B6/26 ,  G11B5/00

CPC classification number: G02B6/3532 ,  G02B6/02076 ,  G02B6/1226 ,  G02B6/14 ,  G02B6/262 ,  G02B6/2813 ,  G11B5/314 ,  G11B5/4866 ,  G11B5/6088 ,  G11B11/10539 ,  G11B11/10595 ,  G11B13/045 ,  G11B2005/0021

Abstract: A first waveguide portion receives light from an energy source in a fundamental transverse electric (TE00) mode. A mode converter converts a portion of the light to higher-order transverse electric (TE10) mode. A second waveguide portion receives the light at the TE10 mode and delivers the light to a near-field transducer that heats a recording medium in response thereto. An optical spatial mode filter prevents remnant light in the TE00 mode from affecting the recording medium while passing the light at the TE10 mode.

公开(公告)号：US09741364B2

公开(公告)日：2017-08-22

申请号：US14806417

申请日：2015-07-22

Applicant: Seagate Technology LLC

Inventor： Tim Rausch ,  Minjie Ma ,  Kaizhong Gao ,  Edward Gage

IPC: G11B5/02 ,  G11B5/09 ,  G11B5/012 ,  G11B20/18 ,  G11B11/105 ,  G11B5/00 ,  G11B20/12 ,  G11B5/596 ,  G11B5/60

CPC classification number: G11B20/1889 ,  G11B5/012 ,  G11B5/09 ,  G11B5/59633 ,  G11B5/59638 ,  G11B5/6088 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10521 ,  G11B11/10595 ,  G11B20/12 ,  G11B20/1217 ,  G11B20/1833 ,  G11B27/3027 ,  G11B2005/0021 ,  G11B2020/1222 ,  G11B2020/1232 ,  G11B2020/1238 ,  G11B2020/1292

Abstract: A storage device disclosed herein stores data on a storage media using interlaced magnetic recording (IMR) and it includes a storage controller configured to determine power levels applied to the power source such that power levels applied to heat various tracks can be different from each other. An implementation of the storage device determines the track density, linear densities and power levels for even and odd tracks in IMR HAMR for the storage media.

公开(公告)号：US09472212B2

公开(公告)日：2016-10-18

申请号：US14624089

申请日：2015-02-17

Applicant: Seagate Technology LLC

Inventor： Minjie Ma ,  Edward Charles Gage ,  Kaizhong Gao

IPC: G11B11/00 ,  G11B5/09 ,  G11B7/1263 ,  G11B20/12 ,  G11B5/00 ,  G11B11/105 ,  G11B7/126

CPC classification number: G11B7/1263 ,  G11B5/02 ,  G11B7/126 ,  G11B11/10515 ,  G11B11/10595 ,  G11B20/1217 ,  G11B2005/0021 ,  G11B2020/1232

Abstract: An apparatus comprises a controller configured to apply a writing configuration (WC) to a heat-assisted magnetic recording head to write data to a recording medium. The recording medium includes a plurality of sectors. The controller is further configured to determine an optimized WC for each of the plurality of sectors and initiate a write operation to one of the plurality of sectors. The write operation is configured to be performed by the head utilizing the optimized WC for the respective sector.

Abstract translation: 一种装置包括：控制器，被配置为将写入配置（WC）应用于热辅助磁记录头以将数据写入记录介质。 记录介质包括多个扇区。 所述控制器还被配置为为所述多个扇区中的每一个确定优化的WC，并且启动对所述多个扇区之一的写入操作。 写入操作被配置为由头部使用针对相应扇区的优化的WC执行。

公开(公告)号：US09454986B2

公开(公告)日：2016-09-27

申请号：US14834140

申请日：2015-08-24

Applicant: Seagate Technology LLC

Inventor： Michael Thomas Johnson ,  Manuel Charles Anaya-Dufresne ,  Zoran Jandric

IPC: G11B11/00 ,  G11B7/1263 ,  G11B5/02 ,  G11B5/31 ,  G11B5/40 ,  G11B5/455 ,  G11B5/60 ,  G11B13/08 ,  G11B11/105 ,  G11B5/00

CPC classification number: G11B7/1263 ,  G11B5/02 ,  G11B5/3136 ,  G11B5/40 ,  G11B5/455 ,  G11B5/607 ,  G11B11/10515 ,  G11B11/10595 ,  G11B13/08 ,  G11B2005/0021

Abstract: A light source is configured to produce light, a waveguide is optically coupled to the light source and configured to direct the light to an intended focus location, and a slider is configured to use the light as an energy source for heating a region of a magnetic recording medium. A thermal sensor is situated on the slider at a location outside of a light path that includes the intended focus location. The thermal sensor is configured for sensing a short time constant change in temperature resulting from light source heating of the thermal sensor, wherein the sensed change in thermal sensor temperature is representative of optical intensity of the light delivered to the intended focus location.

公开(公告)号：US20160148641A1

公开(公告)日：2016-05-26

申请号：US14686456

申请日：2015-04-14

Applicant: Seagate Technology LLC

Inventor： Kaizhong Gao ,  Wenzhong Zhu ,  Edward Gage

IPC: G11B20/12 ,  G11B5/09

CPC classification number: G11B20/1889 ,  G11B5/012 ,  G11B5/09 ,  G11B5/59633 ,  G11B5/59638 ,  G11B5/6088 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10521 ,  G11B11/10595 ,  G11B20/12 ,  G11B20/1217 ,  G11B20/1833 ,  G11B27/3027 ,  G11B2005/0021 ,  G11B2020/1222 ,  G11B2020/1232 ,  G11B2020/1238 ,  G11B2020/1292

Abstract: A storage device includes a controller that implements an interlaced magnetic recording scheme with prioritized random access. According to one implementation, a controller is configured to write data at a first linear density to alternating data tracks and write data at a second linear density to one or more data tracks interlaced with the alternating data tracks.

Abstract translation: 存储设备包括实现具有优先随机访问的隔行磁记录方案的控制器。 根据一个实施方案，控制器被配置为以第一线性密度将数据写入交替数据轨道，并以第二线性密度将数据写入与交替数据轨道交错的一个或多个数据磁道。

公开(公告)号：US20160148636A1

公开(公告)日：2016-05-26

申请号：US14806358

申请日：2015-07-22

Applicant: Seagate Technology LLC

Inventor： Minjie Ma ,  Kaizhong Gao ,  Edward Gage ,  Tim Rausch

IPC: G11B7/1263 ,  G11B20/18 ,  G11B20/12 ,  G11B5/09

CPC classification number: G11B20/1889 ,  G11B5/012 ,  G11B5/09 ,  G11B5/59633 ,  G11B5/59638 ,  G11B5/6088 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10521 ,  G11B11/10595 ,  G11B20/12 ,  G11B20/1217 ,  G11B20/1833 ,  G11B27/3027 ,  G11B2005/0021 ,  G11B2020/1222 ,  G11B2020/1232 ,  G11B2020/1238 ,  G11B2020/1292

Abstract: A storage device disclosed herein stores data on a storage media using interlaced magnetic recording (IMR) and it includes a storage controller configured to determine power levels applied to the power source such that power levels applied to heat various tracks can be different from each other. An implementation of the storage device determines the track density, linear densities and power levels for even and odd tracks in IMR HAMR for the storage media.

Abstract translation: 本文公开的存储装置使用隔行磁记录（IMR）将数据存储在存储介质上，并且其包括存储控制器，其被配置为确定施加到电源的功率电平，使得施加到加热各种轨道的功率电平可以彼此不同。 存储设备的实现确定用于存储介质的IMR HAMR中的偶数和奇数轨道的轨道密度，线密度和功率水平。

公开(公告)号：US09093085B1

公开(公告)日：2015-07-28

申请号：US14336610

申请日：2014-07-21

Applicant: Kabushiki Kaisha Toshiba

Inventor： Hiroshi Isokawa

IPC: G11B11/00 ,  G11B7/1263 ,  G11B11/105

CPC classification number: G11B11/10595 ,  G11B5/02 ,  G11B11/10506 ,  G11B11/1053 ,  G11B2005/0021

Abstract: According to one embodiment, there is provided a magnetic disk device including a light source, a light irradiation element, and a controller. The light irradiation element is configured to receive light from the light source to irradiate light onto a magnetic disk. The controller is configured to switch between a first control and a second control according to a pulse width of data to be written onto the magnetic disk. The first control keeps an output of the light source at a first value. The second control makes the output of the light source change periodically between the first value and a second value lower than the first value.

Abstract translation: 根据一个实施例，提供一种包括光源，光照射元件和控制器的磁盘装置。 光照射元件被配置为从光源接收光以将光照射到磁盘上。 控制器被配置为根据要写入磁盘的数据的脉冲宽度在第一控制和第二控制之间切换。 第一控制将光源的输出保持在第一值。 第二控制使得光源的输出在第一值和低于第一值的第二值之间周期性地改变。

公开(公告)号：US07684308B2

公开(公告)日：2010-03-23

申请号：US12164537

申请日：2008-06-30

Applicant: Kuo-Ding Shin ,  Kun-Hung Hsieh

Inventor： Kuo-Ding Shin ,  Kun-Hung Hsieh

IPC: G11B7/24

CPC classification number: G11B7/006 ,  G11B7/00718 ,  G11B7/126 ,  G11B11/10504 ,  G11B11/10578 ,  G11B11/10595

Abstract: A system controlling recording on an optical disc is provided. A first counter performs a bit count according to provided channel bit clock signals. A second counter performs a sector count responsive to the bit count obtained by the first counter. The Land/Groove switch predicts machine uses the result of bit count and sector count to predict the land/groove switch point. The processor uses the physical ID (PID) to determine the track type of a sector at which a recording operation initiates. The power controller determines a recording power for the recording operation according to the Land/Groove switch predict machine.

Abstract translation: 提供了一种在光盘上控制记录的系统。 第一计数器根据提供的通道位时钟信号执行位计数。 第二计数器响应于由第一计数器获得的位计数器执行扇区计数。 Land / Groove开关预测机器使用位计数和扇区计数的结果来预测焊盘/凹槽切换点。 处理器使用物理ID（PID）来确定记录操作启动的扇区的轨道类型。 功率控制器根据Land / Groove开关预测机确定记录操作的记录功率。

公开(公告)号：USRE40687E1

公开(公告)日：2009-03-31

申请号：US10017973

申请日：2001-12-07

Applicant: Mitsuaki Oshima ,  Yoshiho Gotoh

Inventor： Mitsuaki Oshima ,  Yoshiho Gotoh

IPC: H04K1/00

CPC classification number: G11B27/24 ,  G06F21/80 ,  G06K1/126 ,  G06K19/04 ,  G06K19/06028 ,  G06K19/08 ,  G06K19/14 ,  G06K2019/06271 ,  G11B5/86 ,  G11B7/0037 ,  G11B7/005 ,  G11B7/0053 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/24038 ,  G11B7/26 ,  G11B11/10595 ,  G11B13/04 ,  G11B13/045 ,  G11B19/04 ,  G11B19/12 ,  G11B19/122 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00123 ,  G11B20/00144 ,  G11B20/00152 ,  G11B20/0021 ,  G11B20/00268 ,  G11B20/00586 ,  G11B20/0071 ,  G11B20/00876 ,  G11B20/10 ,  G11B20/1217 ,  G11B20/1252 ,  G11B20/1403 ,  G11B23/0042 ,  G11B23/281 ,  G11B23/284 ,  G11B23/30 ,  G11B23/38 ,  G11B27/105 ,  G11B2007/0013 ,  G11B2220/2545 ,  G11B2220/2562

Abstract: An object of the present invention is to provide a marking forming apparatus, a method of forming a laser marking on an optical disk, a reproduction apparatus, an optical disk, and a method of manufacturing an optical disk, capable of providing a greatly improved copy prevention capability as compared to prior known construction. To achieve this object, in the optical disk of the invention, for example, a marking is formed by a laser on a reflective film of a disk holding data written thereon and at least position information of the marking or information concerning the position information is written on the disk in an encrypted form or with a digital signature appended thereto.

公开(公告)号：US20090034391A1

公开(公告)日：2009-02-05

申请号：US12065059

申请日：2006-07-31

Applicant: Kazuhiko Aoki ,  Takeharu Shibatoko

Inventor： Kazuhiko Aoki ,  Takeharu Shibatoko

IPC: G11B7/00

CPC classification number: G11B7/24 ,  G11B7/005 ,  G11B7/1263 ,  G11B7/1267 ,  G11B11/10515 ,  G11B11/10584 ,  G11B11/10595

Abstract: [Problems] To provide an optical information reproducing device capable of performing excellent super resolution reproduction at all times without complicating the hardware structure.[Means for Solving Problems] An optical information reproducing device (10) irradiates a laser beam to an optical information recording medium (16) in which effective spot size of the irradiated laser beam changes in accordance with intensity of the laser beam and reproduces information. The optical information reproducing device (10) includes: an asymmetry detection unit (13) as asymmetry detection device for obtaining asymmetry from a reproduction signal obtained by reproducing the information; and a laser power adjusting unit (14) as laser power adjusting device for controlling the laser beam intensity according to the asymmetry obtained by the asymmetry detection unit (13).

Abstract translation: [问题]提供一种能够一直执行优异的超分辨率再现的光学信息再现装置，而不会使硬件结构复杂化。 解决问题的手段光信息再现装置（10）将激光束照射到光信息记录介质（16），其中照射的激光束的有效光点尺寸根据激光束的强度而变化并再现信息。 光信息再现装置（10）包括：作为不对称检测装置的不对称检测单元（13），用于通过再现信息获得的再现信号获得不对称性; 以及激光功率调整单元（14），其作为用于根据由不对称检测单元（13）获得的不对称来控制激光束强度的激光功率调节装置。