公开(公告)号：US6005728A

公开(公告)日：1999-12-21

申请号：US704859

申请日：1996-08-28

申请人： Ho-Yul Bang

发明人： Ho-Yul Bang

IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B20/12 ,  G11B21/08 ,  G11B27/10 ,  G11B27/30 ,  G11B5/09

CPC分类号： G11B27/3027 ,  G11B20/1252 ,  G11B21/085 ,  G11B27/105 ,  G11B5/5526 ,  G11B5/5547 ,  G11B5/59655 ,  G11B2020/1282 ,  G11B2220/20

摘要： A disk recording medium includes a servo track pattern where a gray code field has been deleted, capable of embodying a high capacity hard disk drive. The hard disk drive which uses as a recording medium, a disk having a plurality of servo sectors for each track, includes: a first plurality of servo track patterns on each track, the number of first servo track patterns equal to the total number of first servo sectors existing on each track divided by the number of heads of the hard disk drive, each of the plurality of servo track patterns having a gray code field for providing information for each track; and a second plurality of servo track patterns on each track, the number of second servo track patterns equal to the total number of servo sectors existing on each track minus the number of first servo track patterns, each of the second plurality of servo track patterns corresponding to the first servo track pattern but with the gray code field deleted.

摘要翻译： 磁盘记录介质包括其中灰色代码字段已被删除的伺服磁道图案，其能够体现高容量硬盘驱动器。 使用作为记录介质的硬盘驱动器，具有用于每个磁道的多个伺服扇区的磁盘包括：在每个磁道上的第一多个伺服磁道模式，第一伺服磁道模式的数量等于第一 每个轨道上存在的伺服扇区除以硬盘驱动器的磁头的数量，多个伺服磁道模式中的每一个具有用于为每个磁道提供信息的灰色码字段; 和每个磁道上的第二多个伺服磁道图案，第二伺服磁道图案的数量等于存在于每个磁道上的伺服扇区的总数减去第一伺服磁道模式的数量，第二多个伺服磁道模式中的每一个对应于 到第一个伺服磁道模式，但灰色代码字段被删除。

公开(公告)号：US06172836B2

公开(公告)日：2001-01-09

申请号：US08777136

申请日：1996-12-30

申请人： Ho-Yul Bang

发明人： Ho-Yul Bang

IPC分类号： G11B2102

CPC分类号： G11B27/3027 ,  G11B5/59622 ,  G11B19/04 ,  G11B2220/20

摘要： A method of providing the servo pattern for detecting fine defects in the servo burst signals of a hard disk drive (HDD) comprises the steps of writing a preamble portion for providing a servo sync signal in reading servo data together with a gap to inform of a servo sector, writing a servo address mark (SAM) for notifying the start of the servo to provide a sync signal to read the following gray code, writing the gray code for providing the identification data ID of a track, and writing a burst signal portion consisting of multiple repetition of the position error signal required for even or odd numbered track data and track following.

摘要翻译： 提供用于检测硬盘驱动器（HDD）的伺服突发信号中的精细缺陷的伺服模式的方法包括以下步骤：在读取伺服数据的同时写入用于提供伺服同步信号的前同步码部分与间隙，以通知 伺服扇区，写入用于通知伺服开始的伺服地址标记（SAM）以提供同步信号以读取以下灰度代码，写入用于提供轨道的识别数据ID的灰度代码，以及写入突发信号部分 包括偶数或奇数编号的轨道数据和跟踪跟踪所需的位置误差信号的多次重复。

公开(公告)号：US6151180A

公开(公告)日：2000-11-21

申请号：US60782

申请日：1998-04-15

申请人： Ho-Yul Bang

发明人： Ho-Yul Bang

IPC分类号： G11B25/04 ,  G11B5/00 ,  G11B19/04 ,  G11B19/14 ,  G11B20/18 ,  G11B27/36 ,  G11B5/09 ,  G11B5/02

CPC分类号： G11B27/36 ,  G11B19/04 ,  G11B20/1816 ,  G11B2220/20

摘要： A method and apparatus for determining a number of defects detected on a disk in a hard disk drive. The hard disk drive comprises an actuator arm mounted to a housing and a head mounted to the actuator arm. A spin motor is mounted to the housing and a disk is attached to the spin motor. The disk has a plurality of tracks, each of which has a plurality of sectors. Each of the sectors has a data field. The hard disk drive further comprises a defect detection circuit coupled to the head that detects a number of defects located in the data field. In one embodiment, the hard disk drive comprises a defect size detection circuit coupled to the head, that detects a corresponding size of each defect detected.

摘要翻译： 一种用于确定在硬盘驱动器中的盘上检测到的缺陷的数量的方法和装置。 硬盘驱动器包括安装到壳体的致动器臂和安装到致动器臂的头部。 旋转电机安装到壳体上，并且盘附接到旋转电机。 盘具有多个轨道，每个轨道具有多个扇区。 每个扇区都有一个数据字段。 硬盘驱动器还包括耦合到头的缺陷检测电路，其检测位于数据字段中的多个缺陷。 在一个实施例中，硬盘驱动器包括耦合到头部的缺陷尺寸检测电路，其检测检测到的每个缺陷的对应尺寸。

公开(公告)号：US5982308A

公开(公告)日：1999-11-09

申请号：US946063

申请日：1997-10-07

申请人： Ho-Yul Bang

发明人： Ho-Yul Bang

IPC分类号： G06F3/06 ,  G11B5/02 ,  G11B5/55 ,  G11B5/596 ,  G11B20/10 ,  G11B20/18 ,  G11B27/30 ,  H03M7/14 ,  G11B5/09

CPC分类号： G11B20/10 ,  G11B20/1833 ,  G11B27/3027 ,  G11B5/02 ,  G11B5/5526 ,  G11B5/59688

摘要： A decoding compensation circuit, which compensates for missing pulses when decoding the gray code written in a magnetic disk of a hard disk drive (HDD) includes: a central processing unit (CPU) for controlling the hard disk drive, a positive pulse detection window generator for generating a positive pulse detection window signal, a digital servo data generator for generating a digital servo data, a gray code detection window generator for generating a gray code detection window signal, a first logic gate circuit for logically processing the positive pulse detection window signal, digital servo data and gray code detection window signal so as to produce positive and negative pulse gray codes, a gray sync/data separation circuit for separating gray data and gray sync from the positive and negative pulse gray codes, a second logic gate circuit for logically processing the positive and negative gray data and sync to compensate for missing gray data and sync, a gray sync decision circuit for detecting the gray sync produced from the second logic gate circuit based on the positive pulse detection window signal so as to make a decision to produce an error flag which is transferred to the central processing unit, and a gray data decision circuit for detecting the gray data produced from the second logic gate circuit based on a positive pulse detection window signal to produce binary gray data which is transferred to the central processing unit.

摘要翻译： 一种解码补偿电路，用于补偿写入硬盘驱动器（HDD）的磁盘中的灰度代码时的缺失脉冲，包括：用于控制硬盘驱动器的中央处理单元（CPU），正脉冲检测窗口生成器 用于产生正脉冲检测窗口信号，用于产生数字伺服数据的数字伺服数据发生器，用于产生灰度代码检测窗口信号的灰度检测窗口发生器，用于逻辑处理正脉冲检测窗口信号的第一逻辑门电路 数字伺服数据和灰度代码检测窗口信号，以产生正和负脉冲灰度代码，用于从正和负脉冲灰度代码中分离灰度数据和灰度同步的灰度同步/数据分离电路，第二逻辑门电路 逻辑处理正和负灰度数据并同步以补偿丢失的灰度数据和同步，灰色同步决策电路 r基于正脉冲检测窗信号检测从第二逻辑门电路产生的灰度同步，以便作出产生传送到中央处理单元的错误标志的决定，以及灰度数据判定电路，用于检测灰度 基于正脉冲检测窗口信号从第二逻辑门电路产生的数据，以产生传送到中央处理单元的二进制灰度数据。

公开(公告)号：US6115199A

公开(公告)日：2000-09-05

申请号：US841602

申请日：1997-04-30

申请人： Ho-Yul Bang

发明人： Ho-Yul Bang

IPC分类号： G11B21/10 ,  G11B20/10 ,  G11B27/30 ,  G11B5/09

CPC分类号： G11B20/10 ,  G11B27/3027

摘要： A circuit for preventing servo sectors from being overwritten during write operations due to misdetection of servo address mark (SAM) in a disk drive which includes a CPU, a SAM detection circuit for detecting the SAM, a reference pulse generator for generating reference pulses to obtain a servo detection timing in response to a SAM detection signal, a main counter for counting the system clock signals upon receipt the reference pulses, a data sector end pulse generator for generating a data sector end signal, a SAM detection window generator for generating a SAM detection window signal enabled to a window value loaded by the CPU upon receipt of the end signal and a pseudo SAM upon misdetection of the SAM in the SAM detection window signal, a pseudo SAM counter reset by the SAM detection signal for counting the PSAMs provided by the SAM detection window generator to generate a counting pulse when the counted value exceeds a given value, a delay and search flag bit generator for delaying the servo detection timing in response to the counting pulse generated by the PSAM pulse counter to generate a SAM search select signal and a search flag bit transferred to the CPU, and a SAM search mode control circuit for generating a SAM search start signal and disable signal according to the SAM search select signal provided by the delay and search flag bit generator.

摘要翻译： 一种用于防止伺服扇区由于在包括CPU，用于检测SAM的SAM检测电路的磁盘驱动器中的伺服地址标记（SAM）错误检测而在写操作期间被覆盖的电路，用于产生参考脉冲以获得的参考脉冲发生器 响应于SAM检测信号的伺服检测定时，用于在接收到参考脉冲时对系统时钟信号进行计数的主计数器，用于产生数据扇区结束信号的数据扇区结束脉冲发生器，用于生成SAM的SAM检测窗口生成器 检测窗口信号在SAM检测窗口信号中被接收到结束信号时由CPU加载到窗口值，并且在SAM检测窗信号中错误检测到伪SAM，由SAM检测信号重新设置的伪SAM计数器，用于计数PSAM提供的PSAM SAM检测窗口产生器，当计数值超过给定值时生成计数脉冲，延迟和搜索标志位发生器用于delayin g响应于由PSAM脉冲计数器产生的计数脉冲的伺服检测定时，以产生传送到CPU的SAM搜索选择信号和搜索标志位;以及SAM搜索模式控制电路，用于产生SAM搜索开始信号并禁用 信号根据SAM搜索选择信号由延迟和搜索标志位发生器提供。

公开(公告)号：US6021012A

公开(公告)日：2000-02-01

申请号：US884486

申请日：1997-06-27

申请人： Ho-Yul Bang

发明人： Ho-Yul Bang

IPC分类号： G11B19/02 ,  G11B21/10 ,  G11B5/09

CPC分类号： G11B21/106

摘要： An automatic servo address mark detecting and servo timing compensating circuit of a disk drive includes a servo address mark detection window generating unit for generating a servo address mark detection missing signal and count control signal where the servo address mark is not detected within a range of a servo address mark window of a predetermined servo sector; a servo address mark missing signal counter, which is reset according to a servo address mark detection signal, for generating a servo address mark search signal and pseudo servo address mark where a servo address mark detection missing signal count matches data loaded from the control unit; a servo address mark search controller for selecting the servo address mark search signal and pseudo servo address mark among multiple signals input by the servo address mark missing signal counter according to a select signal input by the control unit; and a servo timing compensation unit for counting system clocks, starting from the data loaded from the control unit and compensating for a delay of servo timing where the count control signal is input.

摘要翻译： 磁盘驱动器的自动伺服地址标记检测和伺服定时补偿电路包括伺服地址标记检测窗口产生单元，用于产生伺服地址标记检测缺失信号和计数控制信号，其中伺服地址标记在 伺服地址标志窗口; 伺服地址标记缺失信号计数器，其根据伺服地址标记检测信号复位，用于产生伺服地址标记搜索信号和伪伺服地址标记，其中伺服地址标记检测缺失信号计数与从控制单元加载的数据相匹配; 伺服地址标记搜索控制器，用于根据由控制单元输入的选择信号，在伺服地址标识缺失信号计数器输入的多个信号中选择伺服地址标记搜索信号和伪伺服地址标记; 以及伺服定时补偿单元，用于从从控制单元加载的数据开始并对输入计数控制信号的伺服定时的延迟进行补偿来对系统时钟进行计数。

公开(公告)号：US5987542A

公开(公告)日：1999-11-16

申请号：US933852

申请日：1997-09-19

申请人： Ho-Yul Bang

发明人： Ho-Yul Bang

IPC分类号： G06F3/06 ,  G11B20/10 ,  G06F13/00

CPC分类号： G06F3/0626 ,  G06F3/0658 ,  G06F3/0676 ,  G11B20/10009

摘要： A serial interface circuit for interfacing serial data between a control unit and a read/write channel circuit of a magnetic disk drive, includes a bit control data loading unit for loading the serial data to interface with the read/write channel circuit of a specified standard and the bit control data related to the transfer control signal of the serial data under the control of the control unit, and a serial interface control circuit for supplying the serial data to the read/write channel circuit by performing the bit conversion to adapt to the serial data, controlling the polarity and edge of the transfer control signal, and controlling the bit conversion by employing the loaded bit control data.

摘要翻译： 用于在控制单元和磁盘驱动器的读/写通道电路之间连接串行数据的串行接口电路包括位控制数据加载单元，用于将串行数据加载到与指定标准的读/写通道电路接口 以及在控制单元的控制下与串行数据的传送控制信号有关的位控制数据，以及串行接口控制电路，用于通过执行位转换来适应于所述读/写通道电路，将串行数据提供给读/写通道电路 串行数据，控制传输控制信号的极性和边缘，以及通过采用加载的位控制数据来控制位转换。

公开(公告)号：US5926333A

公开(公告)日：1999-07-20

申请号：US804001

申请日：1997-02-21

申请人： Ho-Yul Bang

发明人： Ho-Yul Bang

IPC分类号： G11B20/10 ,  G11B27/30 ,  G11B5/09

CPC分类号： G11B27/3027 ,  G11B20/10 ,  G11B2220/20

摘要： A technique for generating sector pulses in a hard disk drive using hardware involves: receiving read reference clocks produced during a read operation of the hard disk drive and producing a byte clock in sync with every byte; outputting the byte clock as an effective production clock in a time interval in which no servo gate signal indicative of a servo zone on a magnetic disk or the hard disk drive is produced, counting the production clocks, and comparing the counted value obtained during the production clock counting step with a previously stored value indicative of a sector length and generating a sector pulse when the counted value is equal to the previously stored value.

摘要翻译： 使用硬件在硬盘驱动器中产生扇区脉冲的技术包括：接收在硬盘驱动器的读取操作期间产生的读取参考时钟并产生与每个字节同步的字节时钟; 在不产生指示磁盘或硬盘驱动器上的伺服区的伺服门信号的时间间隔内输出字节时钟作为有效的生产时钟，对生产时钟进行计数，并比较生产中获得的计数值 时钟计数步骤，其具有指示扇区长度的先前存储的值，并且当计数值等于先前存储的值时产生扇区脉冲。

公开(公告)号：US20050030660A1

公开(公告)日：2005-02-10

申请号：US10638029

申请日：2003-08-08

申请人： Ho-Yul Bang ,  Larry Ro ,  Richard Wang ,  Jong Yun

发明人： Ho-Yul Bang ,  Larry Ro ,  Richard Wang ,  Jong Yun

IPC分类号： G11B20/18 ,  G11B5/00 ,  G11B5/012 ,  G11B5/455 ,  G11B27/36 ,  G11B5/09

CPC分类号： G11B5/012 ,  G11B5/455 ,  G11B27/36 ,  G11B2005/001 ,  G11B2005/0013 ,  G11B2220/20

摘要： A hard disk drive that contains a self-test for generating data on head spikes. The data is stored on a system track of the drive. The self-test may be firmware embedded into a memory device of the drive. The self-test automatically runs when power is provided to the drive. This allows for a 100% spike detection test for disk drives assembled at a manufacturing facility. The self-test includes writing a test waveform, reading the test waveform and comparing the read waveform with a threshold to determine the existence of spikes. Data on the spikes is then stored on the system track. The data is compared with certain criteria to determine whether the disk drive is defective.

摘要翻译： 一个硬盘驱动器，包含用于在头尖上生成数据的自检。 数据存储在驱动器的系统轨道上。 自检可以是固件嵌入到驱动器的存储器设备中。 当给驱动器提供电源时，自检将自动运行。 这允许在制造设备上组装的磁盘驱动器进行100％的峰值检测测试。 自检包括写入测试波形，读取测试波形并将读取波形与阈值进行比较，以确定峰值的存在。 尖峰上的数据然后存储在系统轨道上。 将数据与某些标准进行比较，以确定磁盘驱动器是否有故障。

公开(公告)号：US06671114B2

公开(公告)日：2003-12-30

申请号：US08861157

申请日：1997-05-21

申请人： Ho-Yul Bang

发明人： Ho-Yul Bang

IPC分类号： G11B509

CPC分类号： G11B20/1252 ,  G11B27/3027 ,  G11B2220/20

摘要： A data sector format suitable for a high density hard disk drive includes an ID region for writing ID information for the data sector, and a data region for writing data transferred from an external device. The ID region is formed within the data region and a synchronization signal for reading the ID information is written into the data region. The data sector includes a data sync region for writing a synchronization signal for reading information written on the data sector, the ID region for writing ID information for the data sector, a PAD region for separating the ID region and the data region, a data address mark region for indicating a validity of data written on the data sector, the data region for writing the data transferred from the external device, and an error correction code region for writing an error correction code to automatically correct an error upon occurrence of a defect when data is written on the data region.

摘要翻译： 适用于高密度硬盘驱动器的数据扇区格式包括用于写入数据扇区的ID信息的ID区域和用于写入从外部设备传送的数据的数据区域。 ID区域形成在数据区域内，并且用于读取ID信息的同步信号被写入数据区域。 数据扇区包括用于写入用于读取写入数据扇区的信息的同步信号的数据同步区域，用于写入用于数据扇区的ID信息的ID区域，用于分离ID区域和数据区域的PAD区域，数据地址 标记区域，用于指示写入数据扇区的数据的有效性，用于写入从外部设备传送的数据的数据区域和用于写入纠错码的纠错码区域，以便在出现缺陷时自动校正错误， 数据写入数据区。