公开(公告)号：US06747825B1

公开(公告)日：2004-06-08

申请号：US09578235

申请日：2000-05-24

申请人： Wei Loon Ng ,  Beng Wee Quak ,  YongPeng Chng ,  Wesley Wing Hung Chan ,  Patrick Tai Heng Wong

发明人： Wei Loon Ng ,  Beng Wee Quak ,  YongPeng Chng ,  Wesley Wing Hung Chan ,  Patrick Tai Heng Wong

IPC分类号： G11B509

CPC分类号： G11B20/1883 ,  G11B5/09 ,  G11B5/59616 ,  G11B2220/20

摘要： A disc drive includes a base and a disc rotatably attached to the base. The disc drive is formatted by obtaining a list of defective sector entries, determining a first location of selected information based on skipping the defective sectors within the list of defective sector entries, and calculating a second location for selected information. At least one sector to skip is added before the second location of selected information to move the selected information from the first position to the second position. The added sectors may be designated as defective sectors. By adding the at least one sector to skip, the second position of the information is moved or slipped.

摘要翻译： 盘驱动器包括基座和可旋转地附接到基座的盘。 通过获得缺陷扇区条目的列表来格式化盘驱动器，基于跳过缺陷扇区条目列表内的缺陷扇区，以及计算选定信息的第二位置，确定选定信息的第一位置。 在所选择的信息的第二位置之前添加至少一个要跳过的扇区，以将选择的信息从第一位置移动到第二位置。 添加的扇区可以被指定为缺陷扇区。 通过添加要跳过的至少一个扇区，信息的第二位置被移动或滑动。

公开(公告)号：US06725330B1

公开(公告)日：2004-04-20

申请号：US09649106

申请日：2000-08-25

申请人： Patrick Tai Heng Wong ,  Beng Wee Quak ,  YongPeng Chng ,  Wesley Wing Hung Chan ,  WeiLoon Ng

发明人： Patrick Tai Heng Wong ,  Beng Wee Quak ,  YongPeng Chng ,  Wesley Wing Hung Chan ,  WeiLoon Ng

IPC分类号： G06F1200

CPC分类号： G06F12/0866

摘要： According to one embodiment of the present invention a disc controller in a disc drive includes a cache memory and a control circuit. The control circuit is configured to identify an operating system of a host computer coupled to the disc drive, select a segmentation level for the cache memory based on the identified operating system, and store information in the cache memory according to the segmentation level. According to another embodiment of the present invention a cache memory in a disc drive is operated by identifying an operating system of a host computer coupled to the disc drive, selecting a segmentation level for the cache memory based on the identified operating system, and storing information in the cache memory according to the segmentation level. The operating system is identified by reading a partition type from a master boot record stored in a disc in the disc drive.

摘要翻译： 根据本发明的一个实施例，盘驱动器中的盘控制器包括高速缓冲存储器和控制电路。 控制电路被配置为识别耦合到盘驱动器的主计算机的操作系统，基于所识别的操作系统选择高速缓存存储器的分段级别，并根据分段级别将信息存储在高速缓冲存储器中。 根据本发明的另一实施例，盘驱动器中的高速缓冲存储器通过识别耦合到盘驱动器的主计算机的操作系统来操作，基于所识别的操作系统选择高速缓冲存储器的分段级别，并且存储信息 在高速缓冲存储器中根据分段级别。 通过从存储在盘驱动器中的盘中的主引导记录读取分区类型来识别操作系统。

公开(公告)号：US06560052B2

公开(公告)日：2003-05-06

申请号：US09351737

申请日：1999-07-12

申请人： Wei Loon Ng ,  Beng Wee Quak ,  Wing Hung Chan ,  Swee Kieong Choo ,  Choon Wei Ng ,  Teck Khoon Lim

发明人： Wei Loon Ng ,  Beng Wee Quak ,  Wing Hung Chan ,  Swee Kieong Choo ,  Choon Wei Ng ,  Teck Khoon Lim

IPC分类号： G11B509

CPC分类号： G11B20/1258 ,  G11B5/012 ,  G11B5/09 ,  G11B20/1816 ,  G11B27/105 ,  G11B2005/001 ,  G11B2220/20 ,  G11B2220/2516

摘要： The present invention pertains to an apparatus and method for recording data in a variable bit density disc drive. The disc drive includes a recording surfaces, each having a corresponding head for recording data on the recording surface. At least one head is operated at a different recording frequency from the other heads, creating a variable bit density for the different recording surfaces. The combination of head recording frequencies is determined following an error testing operation and a unique physdisc lookup table is created based on the determined recording frequencies. The physdisc lookup table is used to allocate data sectors and to convert between logical and physical block addresses.

摘要翻译： 本发明涉及一种用于在可变位密度盘驱动器中记录数据的装置和方法。 盘驱动器包括记录表面，每个记录表面具有用于在记录表面上记录数据的相应头部。 至少一个头部以与其他头部不同的记录频率操作，为不同的记录表面创建可变位密度。 头部记录频率的组合在​​误差测试操作之后确定，并且基于所确定的记录频率创建唯一的物理查找表。 physdisc查找表用于分配数据扇区，并在逻辑块和物理块地址之间进行转换。

公开(公告)号：US06445653B1

公开(公告)日：2002-09-03

申请号：US09714025

申请日：2000-11-15

申请人： Wei Loon Ng ,  Teck Khoon Lim ,  Beng Wee Quak ,  Wing Hung Chan ,  Myint Ngwe

发明人： Wei Loon Ng ,  Teck Khoon Lim ,  Beng Wee Quak ,  Wing Hung Chan ,  Myint Ngwe

IPC分类号： G11B700

CPC分类号： G11B27/105 ,  G11B5/012 ,  G11B20/10 ,  G11B2005/001 ,  G11B2220/20 ,  G11B2220/2516

摘要： The present invention pertains to an apparatus and method for recording data in a data storage medium. The data storage medium includes a number of discs, each having at least one recording surface. Each recording surface is associated with a read/write head that records and accesses data from the surface. Each recording surface is partitioned into a number of zones. Each zone is vertically aligned with a same zone on each surface of each disc. The zone boundaries on all surfaces of the disc drive are the same. The recording frequency for each zone on all surfaces can differ for each read/write head in order to compensate for a read/write head that cannot meet the BPI error rate threshold.

摘要翻译： 本发明涉及用于在数据存储介质中记录数据的装置和方法。 数据存储介质包括多个盘，每个盘具有至少一个记录表面。 每个记录表面与记录和访问来自表面的数据的读/写头相关联。 每个记录表面被划分成多个区域。 每个区域与每个盘的每个表面上的相同区域垂直对准。 磁盘驱动器的所有表面上的区域边界是相同的。 所有表面上的每个区域的记录频率对于每个读/写头可能不同，以补偿不能满足BPI错误率阈值的读/写头。

公开(公告)号：US06182250B2

公开(公告)日：2001-01-30

申请号：US09167808

申请日：1998-10-07

申请人： Wei Loon Ng ,  Teck Khoon Lim ,  Beng Wee Quak ,  Wing Hung Chan ,  Myint Ngwe

发明人： Wei Loon Ng ,  Teck Khoon Lim ,  Beng Wee Quak ,  Wing Hung Chan ,  Myint Ngwe

IPC分类号： G06F1100

CPC分类号： G11B27/105 ,  G11B5/012 ,  G11B20/10 ,  G11B2005/001 ,  G11B2220/20 ,  G11B2220/2516

摘要： The present invention pertains to an apparatus and method for recording data in a data storage medium. The data storage medium includes a number of discs, each having at least one recording surface. Each recording surface is associated with a read/write head that records and accesses data from the surface. Each recording surface is partitioned into a number of zones. Each zone is vertically aligned with a same zone on each surface of each disc. The zone boundaries on all surfaces of the disc drive are the same. The recording frequency for each zone on all surfaces can differ for each read/write head in order to compensate for a read/write head that cannot meet the BPI error rate threshold.

摘要翻译： 本发明涉及用于在数据存储介质中记录数据的装置和方法。 数据存储介质包括多个盘，每个盘具有至少一个记录表面。 每个记录表面与记录和访问来自表面的数据的读/写头相关联。 每个记录表面被划分成多个区域。 每个区域与每个盘的每个表面上的相同区域垂直对准。 磁盘驱动器的所有表面上的区域边界是相同的。 所有表面上的每个区域的记录频率对于每个读/写头可能不同，以补偿不能满足BPI错误率阈值的读/写头。

公开(公告)号：US06724562B1

公开(公告)日：2004-04-20

申请号：US09538535

申请日：2000-03-30

申请人： Chiap Heok Ang ,  Niroot Jierapipatanakul ,  Beng Theam Ko ,  Myint Ngwe ,  Beng Wee Quak ,  Choonkiat Lim

发明人： Chiap Heok Ang ,  Niroot Jierapipatanakul ,  Beng Theam Ko ,  Myint Ngwe ,  Beng Wee Quak ,  Choonkiat Lim

IPC分类号： G11B5596

CPC分类号： G11B5/59633

摘要： A method for writing servo patterns on at least one disc in a disc drive that has a first set of tracks and a second set of tracks on a major surface of the disc includes stepping between the tracks of the first set of tracks at a first constant angle, and stepping between the tracks of the second set of tracks at a second constant angle. Stepping between tracks in the first group or the second group includes selecting two adjacent tracks from either the first group of tracks or the second group of tracks, and determining the angle through which an actuator assembly must be rotated between the two adjacent tracks selected to produce a selected track pitch. The method produces a disc for a disc drive with a first set of tracks, and a second set of tracks in which the track pitch varies across the set of tracks.

摘要翻译： 一种用于在盘驱动器中的至少一个盘上写入伺服图案的方法，所述盘驱动器具有第一组轨道，并且在所述盘的主表面上的第二组轨道包括在所述第一组轨道的轨道之间以第一常数 角度，并以第二恒定角度在第二组轨道的轨迹之间进行步进。 在第一组或第二组中的轨道之间的步进包括从第一组轨道或第二组轨道中选择两个相邻的轨道，并且确定致动器组件必须在被选择产生的两个相邻轨道之间旋转的角度 选定的音高。 该方法产生用于具有第一组轨道的盘驱动器的盘，以及轨道间距在该组轨道上变化的第二组轨道。

公开(公告)号：US06704159B2

公开(公告)日：2004-03-09

申请号：US09810337

申请日：2001-03-16

申请人： MingZhong Ding ,  KianKeong Ooi ,  YangQuan Chen ,  Jack Ming Teng ,  ShuangQuan Min ,  Beng Wee Quak

发明人： MingZhong Ding ,  KianKeong Ooi ,  YangQuan Chen ,  Jack Ming Teng ,  ShuangQuan Min ,  Beng Wee Quak

IPC分类号： G11B5596

CPC分类号： G11B21/02 ,  G11B19/28

摘要： A method of implementing an automatic acoustic management feature for a disc drive includes receiving an acoustic/performance compromising factor from a host, tuning disc drive performance by applying the factor to a control parameter to generate a modified control parameter, and executing a loop for controlling a disc drive operation using the modified control parameter. In another embodiment, a disc drive has a base, a rotatable disc, an actuator assembly with an arm for carrying a head in transducing relation to the disc in response to a control signal, a receiver for receiving an acoustic/performance compromising factor, and a controller that monitors the position of the arm and generates the control signal. The controller executes a seeking control loop having a control parameter modified by applying a compromising factor to the parameter to tune the acoustic performance of the drive.

摘要翻译： 实现用于盘驱动器的自动声学管理特征的方法包括从主机接收声学/性能损害因子，通过将因子应用于控制参数来产生修改的控制参数来调谐盘驱动器性能，以及执行用于控制的循环 使用修改的控制参数的盘驱动器操作。 在另一个实施例中，盘驱动器具有底座，可旋转盘，具有臂的致动器组件，用于响应于控制信号而承载头与盘转换的关系，接收器用于接收声学/性能损害因子，以及 监控臂的位置并产生控制信号的控制器。 控制器执行寻道控制回路，其具有通过对参数应用折中因子而修正的控制参数，以调节驱动器的声学性能。

公开(公告)号：US06564292B2

公开(公告)日：2003-05-13

申请号：US09903353

申请日：2001-07-11

申请人： Ng Wei Loon ,  Ying Ee Yip ,  Beng Wee Quak

发明人： Ng Wei Loon ,  Ying Ee Yip ,  Beng Wee Quak

IPC分类号： G06F1200

CPC分类号： H04N21/2312 ,  G06F3/0613 ,  G06F3/0656 ,  G06F3/0676 ,  G11B20/10527 ,  H04N21/232 ,  H04N21/23406 ,  H04N21/44004

摘要： Audio or video information is stored as data files in clusters or blocks of sectors on a magnetic disc. The data files are transferred from the disc drive to one or more buffers for respective data streaming applications. Optimal buffer size is calculated using operational parameters such as transfer rates and rotational latencies. The sectors are grouped in blocks having a size equivalent to, or slightly larger than, the size of an associated host buffer for the respective application to avoid fragmentation of the data used in each buffer fill, and thereby minimize the time required to fill the buffer from the disc drive.

摘要翻译： 音频或视频信息作为数据文件存储在磁盘上的扇区或块中。 数据文件从磁盘驱动器传送到用于相应数据流应用的一个或多个缓冲器。 使用诸如传输速率和旋转延迟之类的操作参数来计算最佳缓冲器大小。 这些扇区被分组成具有等于或稍大于相应应用的相关联的主机缓冲器的大小的大小的块，以避免在每个缓冲器填充中使用的数据的分段，从而最小化填充缓冲器所需的时间 从磁盘驱动器。

公开(公告)号：US06288867B1

公开(公告)日：2001-09-11

申请号：US09246330

申请日：1999-02-09

申请人： Niroot Jierapipatanakul ,  Michael Joo Chiang Toh ,  Beng Wee Quak ,  Chee Suan Low

发明人： Niroot Jierapipatanakul ,  Michael Joo Chiang Toh ,  Beng Wee Quak ,  Chee Suan Low

IPC分类号： G11B1708

CPC分类号： G11B17/02 ,  G11B17/038

摘要： An information handling system, such as a disc drive, including a base, a disc stack rotatably attached to the base, and an actuator assembly movably attached to the base. The disc stack assembly includes a spindle hub rotatably coupled to the disc drive. The spindle hub has an axis of rotation about which the disc stack assembly rotates. The spindle hub includes a cylindrical portion. The disc stack assembly also includes a clamp, a disc spacer, and a disc coupled to a spindle hub. The disc spacer has an opening therein dimensioned to receive the cylindrical portion of the spindle hub. The disc spacer is asymmetrical and positioned to counter balance a mass offset in the disc stack assembly. The asymmetrical disc spacer also includes a registration surface. The registration surface is on the outer perimeter of the disc spacer. The disc spacer has a center of mass offset from the axial centerline of the opening. The disc spacer is used to counter the center of mass offset of the disc stack assembly. Typically, balancing the disc stack assembly requires that the center of mass of the spacer is on one side of the axis of rotation of the hub and the center of mass of the disc stack assembly is on the other side of the axis of rotation of the hub. The flat surface of the asymmetrical disc spacer is positioned so the plane of the flat surface intersects a plane defined by the axial centerline of the disc stack assembly and a point associated with the mass offset of the disc assembly.

摘要翻译： 诸如盘驱动器的信息处理系统，包括基座，可旋转地附接到基座的盘堆叠以及可移动地附接到基座的致动器组件。 盘堆组件包括可旋转地联接到盘驱动器的主轴毂。 主轴毂具有旋转轴线，盘组件组件围绕其旋转。 主轴毂包括圆柱形部分。 盘堆叠组件还包括夹具，盘形间隔件和联接到主轴毂的盘。 盘形间隔件具有开口，其尺寸设置成容纳主轴毂的圆柱形部分。 盘形间隔物是不对称的并且定位成抵消盘堆叠组件中的质量偏移。 不对称盘片垫片还包括配准表面。 配准表面位于盘间隔件的外周。 盘形间隔件的质心偏离开口的轴线中心线。 盘片用于抵抗盘片组件的质心偏移。 通常，平衡盘堆组件要求间隔件的质心位于轮毂的旋转轴线的一侧，并且盘堆组件的质心位于旋转轴的另一侧上 枢纽。 非对称盘形间隔件的平坦表面被定位成使得平坦表面的平面与由盘堆叠组件的轴向中心线限定的平面和与盘组件的质量偏移相关联的点相交。

公开(公告)号：US06920001B2

公开(公告)日：2005-07-19

申请号：US10459735

申请日：2003-06-12

申请人： Teng Hou Sebastian Chua ,  Myint Ngwe ,  Lan Xia ,  Beng Wee Quak ,  Quek Leong Choo

发明人： Teng Hou Sebastian Chua ,  Myint Ngwe ,  Lan Xia ,  Beng Wee Quak ,  Quek Leong Choo

IPC分类号： G11B5/00 ,  G11B27/36 ,  G11B5/02

CPC分类号： G11B27/36 ,  G11B2005/0005 ,  G11B2220/20

摘要： A method of categorizing magnitudes of thermal asperities in a read-back signal of a data storage system includes receiving the read-back signal from a location containing a thermal asperity. A peak magnitude signal is generated from the read-back signal. A threshold signal is generated using a variable threshold generator. The peak magnitude signal is compared to the threshold signal and a magnitude of the thermal asperity is categorized as a function of the comparison.

摘要翻译： 对数据存储系统的回读信号中的热凹凸的大小进行分类的方法包括从包含热不均匀性的位置接收回读信号。 从读回信号产生峰值幅度信号。 使用可变阈值生成器生成阈值信号。 将峰值幅度信号与阈值信号进行比较，将热不均匀度的大小分类为比较的函数。