公开(公告)号：US06339512B1

公开(公告)日：2002-01-15

申请号：US09276211

申请日：1999-03-25

申请人： S. M. Sri-Jayantha ,  Hien Dang ,  Arun Sharma ,  Kiyoshi Satoh ,  Tetsuo Ueda ,  Hideki Ohzeki ,  Nayouki Kagami ,  Kiochi Takeuchi

发明人： S. M. Sri-Jayantha ,  Hien Dang ,  Arun Sharma ,  Kiyoshi Satoh ,  Tetsuo Ueda ,  Hideki Ohzeki ,  Nayouki Kagami ,  Kiochi Takeuchi

IPC分类号： G11B5596

CPC分类号： G11B5/6005 ,  G11B5/59627 ,  G11B21/21

摘要： A hard disk has a servo loop and a rotating storage medium. The rotating storage medium has one or more significant flutter modes at frequencies below a zero cross frequency of a rejection transfer function of the servo loop. The effect of the forgoing is to allow the servo loop to better track a rotating medium that is subject to significant flutter. Peak filters with frequency bands that substantially overlap frequency bands of the significant flutter modes can also be added to the servo loop to further improve tracking. Multiple narrow band filters with frequency bands overlap can be used to cover the spectrum of a single flutter mode. Two lag-lead filters, the frequency responses of which overlap can be used to cover two adjacent significant flutter modes. At frequencies intermediate to the two adjacent flutter, modes, the lead caused by one filter, will be cancelled by the lag caused by the second.

摘要翻译： 硬盘具有伺服回路和旋转存储介质。 旋转存储介质在低于伺服环路的拒绝传递函数的零交叉频率的频率下具有一个或多个显着颤振模式。 上述的效果是允许伺服回路更好地跟踪受到显着颤动的旋转介质。 具有基本上与重要抖动模式的频带重叠的频带的峰值滤波器也可以被添加到伺服环路中以进一步改善跟踪。 具有频带重叠的多个窄带滤波器可以用于覆盖单个颤振模式的频谱。 两个滞后引线滤波器，其重叠的频率响应可用于覆盖两个相邻的显着颤振模式。 在两个相邻颤振之间的频率中，模式，由一个滤波器引起的引线将被第二个引起的滞后所抵消。

公开(公告)号：US6097565A

公开(公告)日：2000-08-01

申请号：US594572

申请日：1996-01-31

申请人： Muthuthamby Sri-Jayantha ,  Arun Sharma ,  Hien Dang ,  Hirouki Suzuki

发明人： Muthuthamby Sri-Jayantha ,  Arun Sharma ,  Hien Dang ,  Hirouki Suzuki

IPC分类号： G11B21/10 ,  G11B5/596

CPC分类号： G11B5/59627

摘要： In a direct access storage device including a rotating disk, a head positioned for interaction with said disk, an actuator for carrying said head and a servo system for operating said actuator so as to follow a substantially circular track on said disk by responding to a position error signal, a method for reducing response of the servo system to radial runout of the circular tracks, comprising the steps of obtaining radial runout data; filtering the data; storing the filtered data; subtracting the filtered data from the position error signal to obtain a corrected position error signal; and using the corrected position error signal to control the servo system. A direct access storage device in accordance with the invention includes means for obtaining radial runout data; means for filtering the data; means for storing the filtered data; means for subtracting the filtered data from the position error signal to obtain a corrected position error signal; and means for controlling the servo system using the corrected position error signal.

摘要翻译： 在包括旋转盘的直接存取存储装置中，用于与所述盘相互作用的头部，用于承载所述头部的致动器和用于操作所述致动器的伺服系统，以便通过响应于位置 误差信号，用于减小伺服系统对圆形轨道的径向跳动的响应的方法，包括以下步骤：获得径向跳动数据; 过滤数据; 存储经过滤的数据; 从位置误差信号中减去滤波后的数据，得到校正后的位置误差信号; 并使用校正的位置误差信号来控制伺服系统。 根据本发明的直接存取存储装置包括用于获得径向跳动数据的装置; 用于过滤数据的手段; 用于存储经过滤数据的装置; 用于从所述位置误差信号中减去所述滤波数据以获得校正的位置误差信号的装置; 以及用于使用校正的位置误差信号来控制伺服系统的装置。

公开(公告)号：US07820488B2

公开(公告)日：2010-10-26

申请号：US11932793

申请日：2007-10-31

申请人： Sri M. Sri-Jayantha ,  Gareth Hougham ,  Sung Kang ,  Lawrence Mok ,  Hien Dang ,  Arun Sharma

发明人： Sri M. Sri-Jayantha ,  Gareth Hougham ,  Sung Kang ,  Lawrence Mok ,  Hien Dang ,  Arun Sharma

IPC分类号： H01L21/00

CPC分类号： H01L23/552 ,  H01L23/3677 ,  H01L2924/0002 ,  H01L2924/00

摘要： A microelectronic device is made of a semiconductor substrate, a heat generating component in a layer thereof, and a body within the remaining semiconductor substrate. The body is made of materials which have a high thermal inertia and/or thermal conductivity. When high thermal conductivity materials are used, the body acts to transfer the heat away from the substrate to a heat sink.

摘要翻译： 微电子器件由半导体衬底，其一层中的发热元件和剩余半导体衬底内的主体构成。 主体由具有高热惯性和/或导热性的材料制成。 当使用高导热性材料时，主体用于将热量从基板转移到散热器。

公开(公告)号：US07329948B2

公开(公告)日：2008-02-12

申请号：US10966202

申请日：2004-10-15

申请人： Sri M. Sri-Jayantha ,  Gareth Hougham ,  Sung Kang ,  Lawrence Mok ,  Hien Dang ,  Arun Sharma

发明人： Sri M. Sri-Jayantha ,  Gareth Hougham ,  Sung Kang ,  Lawrence Mok ,  Hien Dang ,  Arun Sharma

IPC分类号： H01L23/10 ,  H01L23/34

CPC分类号： H01L23/552 ,  H01L23/3677 ,  H01L2924/0002 ,  H01L2924/00

摘要： A microelectronic device is made of a semiconductor substrate, a heat generating component in a layer thereof, and a body within the remaining semiconductor substrate. The body is made of materials which have a high thermal inertia and/or thermal conductivity. When high thermal conductivity materials are used, the body acts to transfer the heat away from the substrate to a heat sink.

摘要翻译： 微电子器件由半导体衬底，其一层中的发热元件和剩余半导体衬底内的主体构成。 主体由具有高热惯性和/或导热性的材料制成。 当使用高导热性材料时，主体用于将热量从基板转移到散热器。

公开(公告)号：US06937432B2

公开(公告)日：2005-08-30

申请号：US10655061

申请日：2003-09-03

申请人： Sri M. Sri-Jayantha ,  Vijayeshwar Das Khanna ,  Gerard McVicker ,  Hien Dang ,  Arun Sharma ,  Kiyoshi Satoh ,  Tatsuo Nakamoto

发明人： Sri M. Sri-Jayantha ,  Vijayeshwar Das Khanna ,  Gerard McVicker ,  Hien Dang ,  Arun Sharma ,  Kiyoshi Satoh ,  Tatsuo Nakamoto

IPC分类号： G11B33/12 ,  G11B25/04 ,  G11B33/08 ,  G11B17/00 ,  G11B5/012

CPC分类号： G11B33/08

摘要： A system for mounting a hard disk enclosure (HDE), includes a casing pivotably mounted to minimize at least one of settle-out dynamics, external rotational vibration, and emitted vibration, the casing allowing the HDE to rotate substantially freely, wherein the center of gravity of the HDE is substantially the same as a pivot point of the casing. Further, a computer chassis includes a housing, at least one disk drive assembly for being housed by the housing, and a plurality of theta-mounts integrally built within the housing.

摘要翻译： 一种用于安装硬盘盒（HDE）的系统，包括可枢转地安装的壳体，以最小化至少一个沉降动力学，外部旋转振动和发射的振动，所述壳体允许HDE基本上自由旋转，其中， HDE的重力基本上与壳体的枢转点相同。 此外，计算机机箱包括壳体，至少一个用于由壳体容纳的盘驱动组件以及一体地内置在壳体内的多个θ安装座。

公开(公告)号：US06898046B2

公开(公告)日：2005-05-24

申请号：US10153684

申请日：2002-05-24

申请人： Sri M. Sri-Jayantha ,  Hien Dang ,  Arun Sharma ,  Isao Yoneda

发明人： Sri M. Sri-Jayantha ,  Hien Dang ,  Arun Sharma ,  Isao Yoneda

IPC分类号： G11B21/10 ,  G11B5/55 ,  G11B5/596 ,  G11B25/04

CPC分类号： G11B5/5582 ,  G11B5/596 ,  G11B5/59627 ,  G11B25/043

摘要： A disk drive (HDD) (and method) subject to linear and rotational vibration, includes an independent sensing unit for sensing a rotational velocity component of the rotational vibration in a predetermined frequency range, and an optimal filter combination for receiving an output from the sensing unit.

摘要翻译： 受到线性和旋转振动的磁盘驱动器（和方法）包括用于感测预定频率范围内的旋转振动的旋转速度分量的独立感测单元，以及用于接收来自感测的输出的最佳滤波器组合 单元。

公开(公告)号：US06487028B1

公开(公告)日：2002-11-26

申请号：US09275952

申请日：1999-03-25

申请人： S. M. Sri-Jayantha ,  Hien Dang ,  Arun Sharma ,  Kiyoshi Satoh ,  Tetsuo Ueda ,  Hideki Ohzeki ,  Nayouki Kagami ,  Kiochi Takeuchi

发明人： S. M. Sri-Jayantha ,  Hien Dang ,  Arun Sharma ,  Kiyoshi Satoh ,  Tetsuo Ueda ,  Hideki Ohzeki ,  Nayouki Kagami ,  Kiochi Takeuchi

IPC分类号： G11B502

CPC分类号： G11B5/59633

摘要： In order to handle platter flutter in a hard disk operated at high speed (e.g. 10,000 RPM) and maintain tracking of read/write head, peak filters are added to a head tracking servo feedback loop. In some embodiments, several lag-lead type peak filters centered at a plurality of flutter mode frequencies are provided to process a Position Error Signal (PES) read from the read/write head. The several filter are preferably arranged in series (i.e. to operate on the PES sequentially), alternatively the filters can be arranged in parallel. Phase lags and leads caused by the several filters partially cancel at frequencies intermediate center frequencies of the several filters. According to another embodiment two or more, preferably three narrow band filters are used to cover the spectrum of each flutter mode. In a configuration mode, a spectrum of the flutter modes can be obtained and used to set the center frequencies, and bandwidths of filters used to filter out the flutter modes.

摘要翻译： 为了处理以高速（例如10,000RPM）运行的硬盘中的盘片颤动并且保持对读/写头的跟踪，峰值滤波器被添加到磁头跟踪伺服反馈回路中。 在一些实施例中，提供以多个颤振模式频率为中心的几个滞后引线型峰值滤波器来处理从读/写头读取的位置误差信号（PES）。 多个滤波器优选地串联布置（即，顺序地在PES上操作），或者滤波器可以并联布置。 由几个滤波器引起的相位滞后和引线在几个滤波器的中间中心频率处部分地消除。 根据另一个实施例，两个或更多个，优选地三个窄带滤波器用于覆盖每个颤振模式的频谱。 在配置模式下，可以获得颤振模式的频谱，并用于设置中心频率，以及用于滤除颤振模式的滤波器的带宽。

公开(公告)号：US06574065B1

公开(公告)日：2003-06-03

申请号：US09311307

申请日：1999-05-14

申请人： Sri M. Sri-Jayantha ,  Arun Sharma ,  Hien Dang ,  Tetsuo Ueda ,  Kenji Okada ,  Hideo Asano ,  Tatsuya Endoh ,  Masayuki Takeuchi

发明人： Sri M. Sri-Jayantha ,  Arun Sharma ,  Hien Dang ,  Tetsuo Ueda ,  Kenji Okada ,  Hideo Asano ,  Tatsuya Endoh ,  Masayuki Takeuchi

IPC分类号： G11B2102

CPC分类号： G11B21/083 ,  G11B5/59605

摘要： A method and apparatus for adaptive resonance cancellation in a rotating storage system, includes designing a set of digitally selectable optimum resonance cancellation filters, generating a series of excitation signals for injection into the filters, generating a characteristic resonance frequency based on the excitation signals, and computing an address pointer corresponding to the resonance frequency, to select an optimum resonance cancellation filter.

摘要翻译： 一种用于旋转存储系统中自适应共振消除的方法和装置，包括设计一组数字可选择的最佳共振消除滤波器，产生一系列用于注入滤波器的激励信号，基于激励信号产生特征谐振频率，以及 计算对应于谐振频率的地址指针，以选择最佳谐振消除滤波器。

公开(公告)号：US5608586A

公开(公告)日：1997-03-04

申请号：US327168

申请日：1994-10-21

申请人： Muthuthamby Sri-Jayantha ,  Arun Sharma ,  Hien Dang ,  Satoshi Yamamoto

发明人： Muthuthamby Sri-Jayantha ,  Arun Sharma ,  Hien Dang ,  Satoshi Yamamoto

IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B5/035

CPC分类号： G11B5/5547 ,  G11B5/59627

摘要： A method and apparatus, in a direct access storage device including a head positioned for interaction with a data storage medium mounted on a rotating spindle, an actuator for positioning the head, and a servo control loop for positioning the actuator. The improvement comprises: a narrow band gain enhancing filter for connection in the servo control loop. The filter has a response frequency related to the rotational frequency of the spindle. The filter has programmable initial states. Also provided is a switch for switching in the narrow band filter as the head approaches a target position on the data storage medium. Initial states of the filter are determined and supplied to program the filter. At least one additional filter having a peak response frequency at a harmonic of the frequency of rotation of the spindle, may be provided. Initial states of the additional filters are determined and supplied to program the additional filter. The filter may include successive delay circuits for inputs to the filter, which circuits provide delayed outputs; multipliers for multiplying selected delayed outputs by a constant; and a summer for summing the delay outputs after the delayed outputs are multiplied by the multipliers. The initial states may be stored as phase, frequency and amplitude of a sine function.

摘要翻译： 一种直接存取存储装置中的方法和装置，包括：定位用于与安装在旋转主轴上的数据存储介质相互作用的头部，用于定位头部的致动器，以及用于定位致动器的伺服控制回路。 改进包括：用于在伺服控制回路中连接的窄带增益增强滤波器。 滤波器具有与主轴转速相关的响应频率。 滤波器具有可编程的初始状态。 还提供了当头部接近数据存储介质上的目标位置时用于切换窄带滤波器的开关。 滤波器的初始状态被确定并提供给编程滤波器。 可以提供至少一个具有在主轴的旋转频率的谐波处的峰值响应频率的附加滤波器。 确定并提供附加过滤器的初始状态以编程附加过滤器。 滤波器可以包括用于输入到滤波器的连续延迟电路，这些电路提供延迟的输出; 用于将选定的延迟输出乘以常数的乘法器; 以及用于将延迟输出乘以乘法器之后的延迟输出相加的加法器。 初始状态可以存储为正弦函数的相位，频率和幅度。

公开(公告)号：US20140020885A1

公开(公告)日：2014-01-23

申请号：US13551929

申请日：2012-07-18

申请人： Timothy J. Chainer ,  Hien P. Dang ,  Pritish R. Parida ,  Mark D. Schultz ,  Arun Sharma

发明人： Timothy J. Chainer ,  Hien P. Dang ,  Pritish R. Parida ,  Mark D. Schultz ,  Arun Sharma

IPC分类号： G05D23/00

CPC分类号： H05K7/20836 ,  G06F1/206

摘要： A method aspect for removing heat from a data center may use liquid coolant cooled without vapor compression refrigeration on a liquid cooled information technology equipment rack. The method may also include regulating liquid coolant flow to the data center through a range of liquid coolant flow values with a controller-apparatus based upon information technology equipment temperature threshold of the data center.

摘要翻译： 从数据中心去除热量的方法方面可以使用液体冷却剂冷却而不进行蒸气压缩制冷在液冷信息技术设备机架上。 该方法还可以包括通过使用基于数据中心的信息技术设备温度阈值的控制器装置通过一定范围的液体冷却剂流量来调节流向数据中心的液体冷却剂流。