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1. 发明授权

US07733591B2 Data storage device with data recovery process using fixed phase clocking for analog-to-digital conversion 失效
标题翻译：具有数据恢复过程的数据存储设备使用固定相位时钟进行模数转换
公开(公告)号：US07733591B2
公开(公告)日：2010-06-08
申请号：US11641322
申请日：2006-12-18
申请人： Kraig Bottemiller , Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Michael Joseph Ross , Fuminori Sai
发明人： Kraig Bottemiller , Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Michael Joseph Ross , Fuminori Sai
IPC分类号： G11B5/09 , G11B15/52 , G11B19/02 , G11B5/02 , G11B20/18
CPC分类号： G11B5/09 , G11B20/10055 , G11B20/10222 , G11B20/10481 , G11B20/10527 , G11B20/1403 , G11B2020/1062
摘要： The invention includes apparatus and methods that allow a data storage device perform an enhanced data recovery procedure (DRP) that includes obtaining a new digital sampling of the voltages for the failing unit of data by re-reading the analog signal and converting it to digital form using an analog-to-digital conversion (ADC) using a fixed phase clock signal. The data samples are re-interpolated using a programmable delay line. The digital values representing the voltages are stored a buffer so that the data can be processed repeatedly using varying parameters as part of the data recovery procedure. Optionally the samples stored in the buffer can be processed in the reverse direction (from end of sector to beginning of sector) without requiring modification of the standard Viterbi detector since it inherently works on data processed in either direction.
摘要翻译：本发明包括允许数据存储设备执行增强型数据恢复过程（DRP）的装置和方法，其包括通过重新读取模拟信号并将其转换为数字形式来获得用于数据故障单元的电压的新数字采样使用固定相位时钟信号的模数转换（ADC）。使用可编程延迟线重新插值数据采样。表示电压的数字值被存储在缓冲器中，使得可以使用变化的参数重复处理数据，作为数据恢复过程的一部分。可选地，存储在缓冲器中的样本可以在相反方向（从扇区的结束到扇区的开始）进行处理，而不需要修改标准维特比检测器，因为它固有地对在任一方向上处理的数据进行工作。

2. 发明申请

US20080144454A1 Data storage device with data recovery process using fixed phase clocking for analog-to-digital conversion 失效
标题翻译：具有数据恢复过程的数据存储设备使用固定相位时钟进行模数转换
公开(公告)号：US20080144454A1
公开(公告)日：2008-06-19
申请号：US11641322
申请日：2006-12-18
申请人： Kraig Bottemiller , Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Michael Joseph Ross , Fuminori Sai
发明人： Kraig Bottemiller , Richard Leo Galbraith , Weldon Mark Hanson , Travis Roger Oenning , Michael Joseph Ross , Fuminori Sai
IPC分类号： G11B5/09
CPC分类号： G11B5/09 , G11B20/10055 , G11B20/10222 , G11B20/10481 , G11B20/10527 , G11B20/1403 , G11B2020/1062
摘要： The invention includes apparatus and methods that allow a data storage device perform an enhanced data recovery procedure (DRP) that includes obtaining a new digital sampling of the voltages for the failing unit of data by re-reading the analog signal and converting it to digital form using an analog-to-digital conversion (ADC) using a fixed phase clock signal. The data samples are re-interpolated using a programmable delay line. The digital values representing the voltages are stored a buffer so that the data can be processed repeatedly using varying parameters as part of the data recovery procedure. Optionally the samples stored in the buffer can be processed in the reverse direction (from end of sector to beginning of sector) without requiring modification of the standard Viterbi detector since it inherently works on data processed in either direction.
摘要翻译：本发明包括允许数据存储设备执行增强型数据恢复过程（DRP）的装置和方法，其包括通过重新读取模拟信号并将其转换为数字形式来获得用于数据故障单元的电压的新数字采样使用固定相位时钟信号的模数转换（ADC）。使用可编程延迟线重新插值数据采样。表示电压的数字值被存储在缓冲器中，使得可以使用变化的参数重复处理数据，作为数据恢复过程的一部分。可选地，存储在缓冲器中的样本可以在相反方向（从扇区的结束到扇区的开始）进行处理，而不需要修改标准维特比检测器，因为它固有地对在任一方向上处理的数据进行工作。

3. 发明申请

US20070121235A1 Magnetic disk drive, method for registering defective sector, and method for controlling flying height 失效
标题翻译：磁盘驱动器，缺陷扇区的登记方法以及控制飞行高度的方法
公开(公告)号：US20070121235A1
公开(公告)日：2007-05-31
申请号：US11605649
申请日：2006-11-28
申请人： Fuminori Sai , Makoto Takase , Kohji Takasaki , Hiroshi Yanagisawa
发明人： Fuminori Sai , Makoto Takase , Kohji Takasaki , Hiroshi Yanagisawa
IPC分类号： G11B5/09 , G11B21/02
CPC分类号： G11B5/59633 , G11B5/59666
摘要： Embodiments in accordance with the present invention relate to suppressing effects of the rotational jitter of a rotating medium during self-writing of patterns on the medium. In one embodiment, patterns are written on a track TE first. While a clock frequency is modulated using the difference between the readout time and target time of each pattern PE on the track TE, patterns PF are written on a track TF after a calculated delay time from the readout of each pattern PE. During pattern writing on the track TF, any timing errors of the patterns PE are stored into memory. While the target time for each pattern PF on the track TF is being corrected using the stored timing errors of the patterns PE and the clock frequency is being modulated using the difference between the readout time and corrected target time of each pattern PF, patterns PG are written on a track TG after a calculated delay time from the readout of each pattern PF.
摘要翻译：根据本发明的实施例涉及在图案自写入介质时抑制旋转介质的旋转抖动的影响。在一个实施例中，模式首先写在轨道TE上。在使用轨道TE上的每个图案PE的读出时间和目标时间之间的差来调制时钟频率的情况下，在从每个图案PE的读出计算的延迟时间之后，在轨道TF上写入图案PF。在轨道TF上的模式写入期间，模式PE的任何定时错误都被存储到存储器中。虽然使用存储的图案PE的定时误差来校正轨道TF上的每个图案PF的目标时间，并且使用每个图案PF的读出时间和校正的目标时间之间的差来调制时钟频率，但是图案PG是在从每个图案PF的读出计算的延迟时间之后，在轨道TG上写入。

4. 发明申请

US20060056099A1 Method of writing patterns using head with correct phases, and data storage device 失效
公开(公告)号：US20060056099A1
公开(公告)日：2006-03-16
申请号：US11223486
申请日：2005-09-08
申请人： Minoru Hashimoto , Kenji Okada , Fuminori Sai , Satoshi Yamamoto
发明人： Minoru Hashimoto , Kenji Okada , Fuminori Sai , Satoshi Yamamoto
IPC分类号： G11B21/02 , G11B5/09
CPC分类号： G11B5/59633 , G11B5/59666
摘要： Embodiments of the invention relate to writing servo patterns onto a recording disk with a high degree of accuracy and with correct phases in a servo-pattern-writing process. An In-Drive SSW (TSSW) process is processing to write product servo patterns onto a recording disk on the basis of time aligned patterns. In the processing to write product servo patterns onto a recording disk, time intervals between time aligned patterns already written on an ID-side track are measured, and timings to write the product servo patterns onto the recording disk on the basis of the measured time intervals are determined. Product servo patterns are then written onto an OD-side track with the determined timings relative to detections of the time aligned patterns used as references. In this way, circumferential-direction positions of product servo patterns written on a track may be aligned to the corresponding circumferential-direction positions of product servo patterns written on an adjacent track.

5. 发明授权

US06424476B1 Method and apparatus for controlling read and write operations in a storage device 失效
标题翻译：用于控制存储设备中的读写操作的方法和装置
公开(公告)号：US06424476B1
公开(公告)日：2002-07-23
申请号：US09100496
申请日：1998-06-19
申请人： Nobuya Matsubara , Fuminori Sai , Yuzo Nakagawa
发明人： Nobuya Matsubara , Fuminori Sai , Yuzo Nakagawa
IPC分类号： G11B509
CPC分类号： G11B5/09 , G11B5/012 , G11B7/00
摘要： A hard disk drive (HDD) having a control unit that reduces the number of control signals required to control the operation of the channel and amplifier. The HDD includes a control unit for controlling reading or writing data from or to a magnetic head, a preamplifier for amplifying the data from the magnetic head, and a channel module which is controlled by the control unit. The channel module converts digital data signals to data write signals and also converts analog signals from the preamplifier to digital signals. Control information is transmitted to the channel module over the data bus which is used to transmit or receive data read/write signals. The channel module performs control in response to transmitted control information.
摘要翻译：具有控制单元的硬盘驱动器（HDD），其减少控制通道和放大器的操作所需的控制信号的数量。 HDD包括用于控制从磁头读取或写入数据的控制单元，用于放大来自磁头的数据的前置放大器，以及由控制单元控制的通道模块。通道模块将数字数据信号转换为数据写入信号，并将模拟信号从前置放大器转换为数字信号。控制信息通过用于发送或接收数据读/写信号的数据总线传送给通道模块。信道模块响应于发送的控制信息执行控制。

6. 发明授权

US6151183A Disk drive device and method for controlling the same 失效
标题翻译：磁盘驱动装置及其控制方法
公开(公告)号：US6151183A
公开(公告)日：2000-11-21
申请号：US79876
申请日：1998-05-15
申请人： Kenja Ogasawara , Fuminori Sai , Shinji Ueno , Isao Yoneda
发明人： Kenja Ogasawara , Fuminori Sai , Shinji Ueno , Isao Yoneda
IPC分类号： G11B5/02 , G11B5/60 , G11B21/08 , G11B21/12 , G11B21/21 , G11B23/50 , G11B21/02
CPC分类号： G11B21/21 , G11B21/083 , G11B5/6011
摘要： The invention relates to a magnetic recording device which can be used at a reduced atmospheric pressure without having the head/slider assembly stick to the disk. A method of the present invention for controlling the operation of a disk drive device in reduced atmospheric pressure where a read/write head mounted on a head support arm flies above the surface of a rotating recording disk. The head support arm is moved along a radial direction of the recording disk to position the read/write head to one of cylinder positions of the recording disk. The method comprises steps of (i) detecting a value of the reduced atmospheric pressure during a power on reset period before a read/write period, (ii) storing information indicating whether the detected value of atmospheric pressure is lower than a threshold value, and (iii) accessing, during the read/write period, the stored information to determine whether an operation for lowering a flying height of the read/write head to a height which is lower than a height for the read/write operation should be inhibited.
摘要翻译：本发明涉及一种磁记录装置，其可以在降低大气压的情况下使用，而不会使磁头/滑块组件粘到磁盘上。本发明的方法用于控制磁盘驱动装置在降低的大气压下的操作，其中安装在头部支撑臂上的读/写头在旋转记录盘的表面上方飞行。头支撑臂沿着记录盘的径向方向移动，以将读/写头定位到记录盘的圆柱体位置之一。该方法包括以下步骤：（i）在读/写周期之前的上电复位期间检测降低的大气压值，（ii）存储指示检测到的大气压值是否低于阈值的信息，以及（iii）在读/写周期期间访问所存储的信息，以确定是否应禁止将读/写头的飞行高度降低到低于读/写操作的高度的高度。

7. 发明授权

US08190831B2 Methods and apparatus for detecting a syncMark in a hard disk drive 有权
标题翻译：用于检测硬盘驱动器中syncMark的方法和装置
公开(公告)号：US08190831B2
公开(公告)日：2012-05-29
申请号：US12262550
申请日：2008-10-31
申请人： Yuan Xing Lee , Fuminori Sai , Shaohua Yang
发明人： Yuan Xing Lee , Fuminori Sai , Shaohua Yang
IPC分类号： G06F13/00
CPC分类号： G11B20/10009 , G11B5/596 , G11B20/1217 , G11B20/1403 , G11B20/1426 , G11B27/3027 , G11B2020/1287 , G11B2020/1476 , G11B2220/20
摘要： Methods and apparatus are provided for detecting a syncMark in a read channel, such as a hard disk drive. A syncMark is detected in a sector in an iterative read channel by obtaining a sector signal from a storage media, the sector signal comprising a first syncMark, data and a second syncMark substantially at an end of the sector; determining whether the first syncMark is detected in the sector signal; searching for the second syncMark if the first syncMark is not detected in the sector signal; and detecting and decoding the sector signal based on a detection of the second syncMark. The second syncMark may be positioned, for example, following data in the sector signal. The second syncMark can be searched for in a window within the signal sector that is based on an estimated location of the first syncMark.
摘要翻译：提供了用于检测诸如硬盘驱动器之类的读通道中的syncMark的方法和装置。通过从存储介质获得扇区信号，在迭代读通道中的扇区中检测syncMark，扇区信号包括基本上在扇区末端的第一syncMark，数据和第二syncMark; 确定在扇区信号中是否检测到第一syncMark; 如果在扇区信号中未检测到第一syncMark，则搜索第二syncMark; 以及基于所述第二syncMark的检测来检测和解码所述扇区信号。第二syncMark可以被定位在例如扇区信号中的跟随数据之后。可以在基于第一syncMark的估计位置的信号扇区内的窗口中搜索第二syncMark。

8. 发明申请

US20100115209A1 METHODS AND APPARATUS FOR DETECTING A SYNCMARK IN A HARD DISK DRIVE 有权
标题翻译：用于检测硬盘驱动器中的同步的方法和装置
公开(公告)号：US20100115209A1
公开(公告)日：2010-05-06
申请号：US12262550
申请日：2008-10-31
申请人： Yuan Xing Lee , Fuminori Sai , Shaohua Yang
发明人： Yuan Xing Lee , Fuminori Sai , Shaohua Yang
IPC分类号： G06F12/00
CPC分类号： G11B20/10009 , G11B5/596 , G11B20/1217 , G11B20/1403 , G11B20/1426 , G11B27/3027 , G11B2020/1287 , G11B2020/1476 , G11B2220/20
摘要： Methods and apparatus are provided for detecting a syncMark in a read channel, such as a hard disk drive. A syncMark is detected in a sector in an iterative read channel by obtaining a sector signal from a storage media, the sector signal comprising a first syncMark, data and a second syncMark substantially at an end of the sector; determining whether the first syncMark is detected in the sector signal; searching for the second syncMark if the first syncMark is not detected in the sector signal; and detecting and decoding the sector signal based on a detection of the second syncMark. The second syncMark may be positioned, for example, following data in the sector signal. The second syncMark can be searched for in a window within the signal sector that is based on an estimated location of the first syncMark.
摘要翻译：提供了用于检测诸如硬盘驱动器之类的读通道中的syncMark的方法和装置。通过从存储介质获得扇区信号，在迭代读通道中的扇区中检测syncMark，扇区信号包括基本上在扇区末端的第一syncMark，数据和第二syncMark; 确定在扇区信号中是否检测到第一syncMark; 如果在扇区信号中未检测到第一syncMark，则搜索第二syncMark; 以及基于所述第二syncMark的检测来检测和解码所述扇区信号。第二syncMark可以被定位在例如扇区信号中的跟随数据之后。可以在基于第一syncMark的估计位置的信号扇区内的窗口中搜索第二syncMark。

9. 发明授权

US07489463B2 Method of writing patterns using head with correct phases, and data storage device 失效
标题翻译：使用正确相位的头写图案的方法和数据存储设备
公开(公告)号：US07489463B2
公开(公告)日：2009-02-10
申请号：US11223486
申请日：2005-09-08
申请人： Minoru Hashimoto , Kenji Okada , Fuminori Sai , Satoshi Yamamoto
发明人： Minoru Hashimoto , Kenji Okada , Fuminori Sai , Satoshi Yamamoto
IPC分类号： G11B5/09 , G11B27/36 , G11B21/02
CPC分类号： G11B5/59633 , G11B5/59666
摘要： Embodiments of the invention relate to writing servo patterns onto a recording disk with a high degree of accuracy and with correct phases in a servo-pattern-writing process. An In-Drive SSW (TSSW) process is processing to write product servo patterns onto a recording disk on the basis of time aligned patterns. In the processing to write product servo patterns onto a recording disk, time intervals between time aligned patterns already written on an ID-side track are measured, and timings to write the product servo patterns onto the recording disk on the basis of the measured time intervals are determined. Product servo patterns are then written onto an OD-side track with the determined timings relative to detections of the time aligned patterns used as references. In this way, circumferential-direction positions of product servo patterns written on a track may be aligned to the corresponding circumferential-direction positions of product servo patterns written on an adjacent track.
摘要翻译：本发明的实施例涉及在伺服模式写入处理中以高精确度和正确的相位将伺服模式写入到记录盘上。驱动内SSW（TSSW）过程是基于时间对齐图案将产品伺服模式写入记录盘的处理。在将产品伺服模式写入记录盘的处理中，测量已经写入ID侧轨道的时间对齐图案之间的时间间隔，以及基于所测量的时间间隔将产品伺服模式写入记录盘的定时确定。然后将产品伺服模式写入具有相对于用作参考的时间对齐图案的检测的确定的定时的OD侧轨道上。以这种方式，写在轨道上的产品伺服图案的圆周方向位置可以与写在相邻轨道上的乘积伺服图案的相应圆周方向位置对准。

10. 发明授权

US07286316B2 Method and data storage device for writing patterns onto recording disk 失效
标题翻译：用于将图案写入记录盘的方法和数据存储装置
公开(公告)号：US07286316B2
公开(公告)日：2007-10-23
申请号：US11437552
申请日：2006-05-19
申请人： Fuminori Sai , Yutaka Ozawa , Kohji Takasaki , Hiroshi Yanagisawa , Satoshi Yamamoto
发明人： Fuminori Sai , Yutaka Ozawa , Kohji Takasaki , Hiroshi Yanagisawa , Satoshi Yamamoto
IPC分类号： G11B21/02 , G11B5/596 , G11B5/55
CPC分类号： G11B5/59633
摘要： Embodiments of the invention efficiently conduct servo corrections for preventing error propagation during SSW. In an example of the present invention, a servo position signal generator generates a servo position signal indicative of the current position of a read element on the basis of a servo signal from a servo channel. A target position generator generates correction data from multiply and add operations between the PES generated when the track that the read element is following is written, and pre-registered correction coefficients. A correction target position is generated from the correction data and a reference target position, and then output to a position error calculator. The position error calculator generates a position error signal (PES) from the servo position signal and the target position signal, and outputs PES to a servo controller. The servo controller generates a control signal (DACOUT) in accordance with PES, and a motor driver unit supplies an electric current of a required value to a VCM in accordance with the control signal.
摘要翻译：本发明的实施例有效地进行伺服校正，以防止SSW期间的错误传播。在本发明的一个例子中，伺服位置信号发生器基于来自伺服通道的伺服信号产生指示读取元件的当前位置的伺服位置信号。目标位置发生器在读取元件所追踪的轨迹被写入时产生的PES和预先登记的校正系数之间乘法生成校正数据并且在其之间添加操作。从校正数据和参考目标位置产生校正目标位置，然后输出到位置误差计算器。位置误差计算器从伺服位置信号和目标位置信号产生位置误差信号（PES），并将PES输出到伺服控制器。伺服控制器根据PES生成控制信号（DACOUT），并且电动机驱动单元根据控制信号向VCM提供所需值的电流。

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