-
公开(公告)号：US20160284376A1
公开(公告)日：2016-09-29
申请号：US15078285
申请日：2016-03-23
发明人： Jae Hyun KIM
IPC分类号： G11B7/1392 , G11B21/02 , G11B19/20
CPC分类号： G11B7/13927 , G11B7/0941 , G11B7/0948 , G11B7/0956 , G11B19/2009 , G11B21/02
摘要： An optical disc apparatus is disclosed. The optical disc apparatus includes: a driver configured to rotate an optical disc having a recording surface for data; an optical pick-up configured to emit a light beam to the optical disc rotated by the driver; and at least one processor configured to operate the optical pick-up to focus the light beam emitted from the pick-up unit to perform one of recording and reproducing the data on the recording surface and track curvature of the recording surface within a preset allowable range, and to process the light beam reflected from the recording surface, the at least one the processor further configured to increase the allowable range if it is determined that the focus of the light beam cannot track the curvature of the recording surface in a section of the recording surface.
摘要翻译： 公开了一种光盘装置。 光盘装置包括：驱动器，被配置为旋转具有用于数据的记录表面的光盘; 光拾取器，被配置为向由所述驾驶员旋转的所述光盘发射光束; 以及至少一个处理器，其被配置为操作所述光学拾取器以聚焦从所述拾取单元发射的光束，以执行在记录表面上记录和再现数据之一以及在预设允许范围内记录所述记录表面的曲率 并且处理从记录表面反射的光束，所述至少一个处理器还被配置为如果确定光束的焦点不能跟踪记录表面的一部分中的记录表面的曲率，则增加允许范围 记录表面。
-
22.发明授权Method and system to monitor magnetic head loading and unloading stability for a data storage system 有权监控数据存储系统磁头加载和卸载稳定性的方法和系统公开(公告)号：US09401165B1
公开(公告)日：2016-07-26
申请号：US14303955
申请日：2014-06-13
发明人： Jifang Tian , Alain Chahwan
CPC分类号： G11B5/5582 , G11B5/54
摘要： A method and system to monitor stability of magnetic head loading and unloading beside media for a data storage system is described. A shock sensor is utilized to detect shock during preloading of a magnetic head beside recording media, during loading of a magnetic head beside recording media, during pre-unloading of a magnetic head from the recording media, and/or during unloading of a magnetic head from the recording media. In an aspect, a desired pitch static attitude (PSA) and roll static attitude (RSA) of a slider is determined. In an aspect, the stability of a magnetic head is assessed and screened while on the fly and during head gimbal assembly (HGA) design and testing to improve overall data storage device reliability.
摘要翻译： 描述了一种用于监测数据存储系统的介质旁边的磁头加载和卸载的稳定性的方法和系统。 在将磁头从记录介质预先卸载期间和/或在磁头卸载期间，使用冲击传感器来在记录介质旁边的磁头预加载期间，在记录介质旁边的磁头加载期间检测冲击 从录音媒体。 在一方面，确定滑块的期望的俯仰静止姿态（PSA）和滚动静态姿态（RSA）。 在一方面，磁头的稳定性在飞行和头部万向节组装（HGA）设计和测试期间进行评估和筛选，以提高整体数据存储设备的可靠性。
-
公开(公告)号：US09343083B2
公开(公告)日：2016-05-17
申请号：US14753370
申请日：2015-06-29
CPC分类号： G11B5/09 , G11B5/6029 , G11B19/048 , G11B27/36
摘要： A system including a write head, a read head, a mixer, and a filter. The write head is configured to write a pattern on a track of a medium of a hard disk drive, wherein the pattern has a first frequency. The read head is configured to read the pattern written on the track of the medium of the hard disk drive. The mixer is configured to mix a first signal generated by reading the pattern with a second signal to obtain a mixed signal. The second signal has a second frequency, and wherein the second frequency is different than the first frequency. The filter is configured to filter the mixed signal to determine a relative head-to-disk speed. The filter has a parameter selected based on a difference between the first frequency and the second frequency.
摘要翻译： 一种包括写入头，读取头，混合器和滤波器的系统。 写入头被配置为在硬盘驱动器的介质的轨道上写入图案，其中图案具有第一频率。 读头被配置为读取写在硬盘驱动器的介质的轨道上的模式。 混频器被配置为将通过读取模式生成的第一信号与第二信号混合以获得混合信号。 第二信号具有第二频率，并且其中第二频率不同于第一频率。 滤波器被配置为过滤混合信号以确定相对的磁盘到磁盘的速度。 滤波器具有基于第一频率和第二频率之间的差异选择的参数。
-
公开(公告)号：US09311944B2
公开(公告)日：2016-04-12
申请号：US14070066
申请日：2013-11-01
CPC分类号： G11B5/6076 , G11B5/6058
摘要： Example embodiments include an apparatus that has a piezoelectric contact sensor. The piezoelectric contact sensor includes a semiconductor device having a semiconductor material that defines a channel through which current can flow. The piezoelectric contact sensor also includes a piezoelectric element coupled to the semiconductor material. The semiconductor material is configured to modulate the current channel in response to compressive stress waves at the contact sensor. Other example embodiments include an apparatus that has a slider having an air-bearing surface, a write head integral to the slider, and a piezoelectric contact sensor that includes a semiconductor device and a piezoelectric element.
摘要翻译： 示例性实施例包括具有压电接触传感器的装置。 压电接触传感器包括具有半导体材料的半导体器件，该半导体器件限定电流可流过的沟道。 压电接触传感器还包括耦合到半导体材料的压电元件。 半导体材料被配置为响应于接触传感器处的压应力波来调制电流通道。 其他示例性实施例包括具有滑动器的装置，其具有空气轴承表面，与滑块一体的写入头和包括半导体器件和压电元件的压电接触传感器。
-
25.发明授权公开(公告)号：US09311940B1
公开(公告)日：2016-04-12
申请号：US14810635
申请日：2015-07-28
发明人： Evgeny Kharisov , Kenneth Haapala
CPC分类号： G11B5/59627
摘要： First and second position error signals (PES) are measured from respective first and second read heads that are simultaneously reading two different surfaces of a recording medium. A common repeatable runout (RRO) compensation signal and a differential RRO signal are determined based on the first and second PES. A voice coil motor that drives the first and second read heads is adjusted using the common RRO compensation signal, and first and second microactuators that respectively position the first and second read heads are adjusted based on the differential RRO signal.
摘要翻译： 从同时读取记录介质的两个不同表面的相应的第一和第二读取头测量第一和第二位置误差信号（PES）。 基于第一和第二PES确定常见的可重复跳动（RRO）补偿信号和差分RRO信号。 使用公共RRO补偿信号来调整驱动第一和第二读取头的音圈电动机，并且基于差分RRO信号调整分别定位第一和第二读取头的第一和第二微致动器。
-
公开(公告)号：US09251824B1
公开(公告)日：2016-02-02
申请号：US14607671
申请日：2015-01-28
CPC分类号： G11B20/10268 , G11B5/4826 , G11B5/483 , G11B5/5552 , G11B5/5573
摘要： An apparatus and associated method employing a bridge circuit having first and second microactuators attached to the apparatus. An excitation source is configured to independently drive each of the microactuators. A computation module is connected to the bridge circuit and is configured to independently measure an electrical output of each microactuator. The computation module uses the electrical outputs to characterize a bimodal modulation of the apparatus.
摘要翻译： 一种使用桥接电路的装置和相关方法，该桥接电路具有连接到该装置的第一和第二微致动器。 激励源被配置为独立地驱动每个微致动器。 计算模块连接到桥式电路，并被配置为独立地测量每个微型致动器的电输出。 计算模块使用电气输出来表征装置的双模式调制。
-
公开(公告)号：US09236087B1
公开(公告)日：2016-01-12
申请号：US14539138
申请日：2014-11-12
发明人： Eric J. Dahlberg
IPC分类号： G11B21/02
CPC分类号： G11B21/02 , G11B5/012 , G11B5/59688
摘要： A method for off track prediction comprises predicting a position error signal (PES) of a write head, comparing the predicted PES to an adaptive threshold, and preventing a write operation of the write head if the predicted PES exceeds the adaptive threshold. The adaptive threshold is a function of an on-cylinder limit, a smoothed standard deviation of an actual PES, and a smoothed standard deviation of the predicted PES.
摘要翻译： 一种用于偏离轨迹预测的方法包括预测写入头的位置误差信号（PES），将预测的PES与自适应阈值进行比较，并且如果预测的PES超过自适应阈值，则防止写入头的写入操作。 自适应阈值是缸内极限，实际PES的平滑标准偏差和预测PES的平滑标准偏差的函数。
-
28.发明授权公开(公告)号：US09202497B2
公开(公告)日：2015-12-01
申请号：US14097457
申请日：2013-12-05
发明人： Chris Rea , Raul Horacio Andruet
CPC分类号： G11B5/6041 , G11B5/3133
摘要： A media-facing surface of a magnetic head is positioned proximate a moving magnetic recording medium. A current is applied to an electromagnet of the magnetic head. The current induces a magnetic force between the magnetic head and the magnetic recording medium that adjusts a clearance therebetween.
摘要翻译： 磁头的面向介质的表面位于移动磁记录介质附近。 电流施加到磁头的电磁体。 电流在磁头和磁记录介质之间引起磁力，从而调整它们之间的间隙。
-
29.发明授权Hard disk drive and method for controlling flying height of magnetic head thereof 有权硬盘驱动器及其磁头的飞行高度的控制方法公开(公告)号：US09177583B2
公开(公告)日：2015-11-03
申请号：US13538735
申请日：2012-06-29
申请人： Kwang Hyun Jang
发明人： Kwang Hyun Jang
CPC分类号： G11B5/6029 , G11B5/56 , G11B5/6011 , G11B5/6076 , G11B27/36
摘要： There is disclosed a hard disk drive and a method of controlling a flying height of a magnetic head of the hard disk drive. A method of controlling a flying height of the magnetic head in a hard disk drive according to an embodiment of the present invention may include (a) providing a FOD sensitivity through a FOD test; (b) reading a preamble signal of a servo pattern; (c) calculating a flying height of the magnetic head from the preamble signal; and (d) applying FOD power for adapting the flying height of the magnetic head to a target flying height of the magnetic head based on the calculated flying height of the magnetic head and the FOD sensitivity.
摘要翻译： 公开了一种硬盘驱动器和控制硬盘驱动器的磁头的飞行高度的方法。 根据本发明的实施例的控制硬盘驱动器中的磁头的飞行高度的方法可以包括（a）通过FOD测试提供FOD灵敏度; （b）读取伺服模式的前导码信号; （c）根据前置信号计算磁头的飞行高度; 以及（d）基于计算出的磁头飞行高度和FOD灵敏度，应用FOD功率以使磁头的飞行高度适应于磁头的目标飞行高度。
-
公开(公告)号：US09159348B2
公开(公告)日：2015-10-13
申请号：US14109603
申请日：2013-12-17
发明人： Jianhua Li , Junguo Xu , Toshiya Shiramatsu , Takehiro Sato
CPC分类号： G11B5/6017 , G11B5/6011
摘要： A method for measuring the head-disk clearance between a slider and a disk includes measuring a first resistance with a first bias applied to an embedded contact sensor of the slider, measuring a second resistance with a second bias applied to the embedded contact sensor of the slider, and determining the head-disk clearance based at least in part on a difference between the first resistance and the second resistance. A system includes a disk drive, a slider comprising an embedded contact sensor, and circuitry to apply at least two bias voltages to the embedded contact sensor, measure at least two resistances of the embedded contact sensor based on the application of the at least two bias voltages, and to determine the head-disk clearance based at least in part on a difference between the at least two resistances.
摘要翻译： 用于测量滑块和盘之间的头盘间隙的方法包括：利用施加到滑块的嵌入式接触传感器的第一偏压来测量第一电阻，以施加到嵌入式接触传感器的第二偏压来测量第二电阻 滑块，并且至少部分地基于第一阻力和第二阻力之间的差异来确定头盘间隙。 一种系统包括盘驱动器，包括嵌入式触点传感器的滑块以及向嵌入式触点传感器施加至少两个偏置电压的电路，基于至少两个偏压的应用来测量嵌入式触点传感器的至少两个电阻 电压，并且至少部分地基于所述至少两个电阻之间的差异来确定磁头盘间隙。
-
-
-
-
-
-
-
-
-
搜索结果
4152 条记录 (耗时 0.027 秒)
