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    Drive with adaptive data format and head switch sequencing
    1.
    发明授权
    Drive with adaptive data format and head switch sequencing 有权
    驱动器采用自适应数据格式和头切换排序

    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。

    Disc drive with fake defect entries
    3.
    发明授权
    Disc drive with fake defect entries 失效
    带有假缺陷条目的光盘驱动器

    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。

    Adaptable cache for disc drive
    4.
    发明授权
    Adaptable cache for disc drive 有权
    适用于磁盘驱动器的缓存

    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。