公开(公告)号：US06728054B2

公开(公告)日：2004-04-27

申请号：US09999329

申请日：2001-10-31

申请人： Yong Peng Chng ,  Steven Tian Chye Cheok ,  Patrick Tai Heng Wong ,  Ricky Wei Watt Yeo ,  Wesley Wing Hung Chan

发明人： Yong Peng Chng ,  Steven Tian Chye Cheok ,  Patrick Tai Heng Wong ,  Ricky Wei Watt Yeo ,  Wesley Wing Hung Chan

IPC分类号： G11B1512

CPC分类号： G11B20/10 ,  G11B19/02

摘要： A system for adapting head switching sequence in a disc drive includes a method of measuring the time duration for a head switch operation and the time duration of a track switch operation. The system compares the two time durations to determine whether head switching or track switching should be utilized within a zone of tracks on the surface of the data disc. Track switch time durations and head switch time durations may be averaged within a zone and the averages compared to determine whether to use head switching or track switching.

摘要翻译： 用于在盘驱动器中适配头切换序列的系统包括测量头切换操作的持续时间和轨道切换操作的持续时间的方法。 系统比较两个持续时间以确定在数据盘的表面上的磁道区域内是否应使用磁头切换或磁道切换。 轨道切换时间持续时间和头切换时间可以在区域内进行平均，并且平均值进行比较以确定是否使用头切换或轨道切换。

公开(公告)号：US06574723B2

公开(公告)日：2003-06-03

申请号：US09860826

申请日：2001-05-18

申请人： Yong Peng Chng ,  Aik Chuan Lim ,  Patrick Tai Heng Wong ,  Chew Boon Toh ,  Steven Tian Chye Cheok

发明人： Yong Peng Chng ,  Aik Chuan Lim ,  Patrick Tai Heng Wong ,  Chew Boon Toh ,  Steven Tian Chye Cheok

IPC分类号： G06F1210

CPC分类号： G11B27/36 ,  G11B5/012 ,  G11B20/1883 ,  G11B2220/20

摘要： A method of storing values that involves splitting each value into a n-bit value and an overflow value, and storing, in a main table, the n-bit values in order of increasing magnitude of the values. For each overflow value, the position of the smallest n-bit value is stored in an overflow table. To retrieve a value, the position of the corresponding n-bit value is compared to the positions stored in the overflow value to determine the overflow value of the n-bit value. The actual value is then obtained from the n-bit value and its overflow value.

公开(公告)号：US08230190B1

公开(公告)日：2012-07-24

申请号：US09716509

申请日：2000-11-20

申请人： Steven Tian Chye Cheok ,  Yong Peng Chng ,  Eng Kuan Ooi

发明人： Steven Tian Chye Cheok ,  Yong Peng Chng ,  Eng Kuan Ooi

IPC分类号： G06F12/14

CPC分类号： G06F21/80

摘要： A fixed disc drive includes a built-in user level security system. The system includes instructions that create an user interface upon a computer allowing interaction with security features of the drive without relying upon BIOS compatibility. In a specific embodiment, the user level security interface is provided by the disc drive during the system boot sequence. A method of disc drive security includes receiving a request from a computer to provide an operating system, and responsively providing user level security interface instructions. The user level security instructions are then executed by the computer to generate a user level security interface. If the drive is in a locked state, the interface requires an user to provide an acceptable password otherwise access to data on the drive is forbidden or otherwise restricted.

摘要翻译： 固定磁盘驱动器包括内置的用户级安全系统。 该系统包括在计算机上创建用户界面的说明，允许与驱动器的安全功能交互，而不依赖于BIOS兼容性。 在具体实施例中，在系统引导序列期间由盘驱动器提供用户级安全接口。 磁盘驱动器安全性的方法包括从计算机接收提供操作系统的请求，以及响应地提供用户级安全接口指令。 然后由计算机执行用户级安全指令以生成用户级安全接口。 如果驱动器处于锁定状态，则该接口要求用户提供可接受的密码，否则对驱动器上的数据的访问被禁止或以其他方式限制。

公开(公告)号：US06545833B1

公开(公告)日：2003-04-08

申请号：US09561221

申请日：2000-04-28

申请人： Chwee Fern Ee ,  Yong Peng Chng ,  Chew Boon Toh ,  Wing Hung Chan

发明人： Chwee Fern Ee ,  Yong Peng Chng ,  Chew Boon Toh ,  Wing Hung Chan

IPC分类号： G11B509

CPC分类号： G06F3/0601 ,  G06F2003/0697 ,  G11B20/18 ,  G11B2020/183

摘要： A disc drive typically contains at least one disc which is divided into sectors. The method of eliminating reassignments involves copying data stored at one sector (referred to as a moving sector) to another sector (referred to as a moving spare), and assigning the logical address associated with the moving sector to the moving spare. The elimination process is repeated until the reassignments are eliminated. Verification of the data copied is conducted to ensure data integrity. Furthermore, the elimination process is preferably executed only when the disc drive is in an idle mode. Records are kept and updated as the process is carried out so that the process can be continued even if interrupted.

摘要翻译： 磁盘驱动器通常包含至少一个被划分成扇区的盘。 消除再分配的方法涉及将存储在一个扇区（称为移动扇区）的数据复制到另一扇区（称为移动备用），并将与移动扇区相关联的逻辑地址分配给移动备用。 消除过程重复，直到重新分配消除。 进行复制数据的验证以确保数据的完整性。 此外，优选仅当盘驱动器处于空闲模式时执行消除处理。 随着进程的进行，记录被保存和更新，以便即使中断进程也可继续进行。

公开(公告)号：US06985319B2

公开(公告)日：2006-01-10

申请号：US09851767

申请日：2001-05-09

申请人： Ying Ee Yip ,  Aik Chuan Lim ,  Yong Peng Chng ,  Steven TianChye Cheok ,  Wei Loon Ng

发明人： Ying Ee Yip ,  Aik Chuan Lim ,  Yong Peng Chng ,  Steven TianChye Cheok ,  Wei Loon Ng

IPC分类号： G11B5/09

CPC分类号： G11B5/09 ,  G11B5/012 ,  G11B20/18 ,  G11B20/1883 ,  G11B2020/1826 ,  G11B2220/20

摘要： The present invention provides a method of describing defects that requires less memory space than conventional methods. Entries of a first defect table are sorted according to the type of track layout, or zones. They are then grouped into clusters. Each cluster is characterized by a set of new parameters, including a starting sector, a scratch parameter, a span parameter, and an angle parameter. The new parameters are stored in a second table, replacing the corresponding entries in the first table. In this manner, a single entry in the second table replaces one or more entries in the first table with one entry in the first table.

摘要翻译： 本发明提供了一种描述与常规方法相比需要更少存储空间的缺陷的方法。 根据轨道布局或区域的类型对第一个缺陷表的条目进行排序。 然后将它们分组成簇。 每个集群的特征在于一组新的参数，包括起始扇区，划痕参数，跨度参数和角度参数。 新参数存储在第二个表中，替换第一个表中的相应条目。 以这种方式，第二个表中的单个条目将第一个表中的一个或多个条目替换为第一个表中的一个条目。

公开(公告)号：US5951687A

公开(公告)日：1999-09-14

申请号：US866530

申请日：1997-05-30

申请人： Wing Hung Chan ,  Yong Peng Chng

发明人： Wing Hung Chan ,  Yong Peng Chng

IPC分类号： G06F11/22 ,  G06F11/00

CPC分类号： G06F11/2284 ,  G06F11/2289

摘要： A storage device for use with a computer is provided, the device includes self diagnostics and configuration. The device is adapted to recognize when the host computer system requests an operating system from the device, and instead of providing the operating system, provides its own diagnostic and configuration software. When the software executes on the computer, the software causes a user interface to be generated, which provides various configuration and diagnostic options to a user. Upon termination of the self diagnostic and configuration software, the device provides the operating system to the computer such that the start up sequence is resumed.

摘要翻译： 提供了一种用于计算机的存储设备，该设备包括自诊断和配置。 该设备适于识别主计算机系统何时从设备请求操作系统，而不是提供操作系统，提供其自己的诊断和配置软件。 当软件在计算机上执行时，该软件导致生成用户界面，为用户提供各种配置和诊断选项。 在自诊断和配置软件终止时，设备向计算机提供操作系统，使得启动顺序被恢复。