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31. 发明授权

US07697224B2 Storing AD sampled data of read/write channel into ECC SRAM 有权
标题翻译：将读/写通道的AD采样数据存储到ECC SRAM中
公开(公告)号：US07697224B2
公开(公告)日：2010-04-13
申请号：US11638969
申请日：2006-12-13
申请人： Fuminori Sai , Yasuhiro Takase , Christopher Taylor
发明人： Fuminori Sai , Yasuhiro Takase , Christopher Taylor
IPC分类号： G11B20/10
CPC分类号： G11B20/10527 , G11B20/10009 , G11B20/10037 , G11B20/1833 , G11B2020/10759 , G11B2020/183 , G11B2220/2516
摘要： An embodiment in accordance with the present invention enables storing in a memory, multi-bit data corresponding to analog signals read from a medium before being converted to single-bit data as recorded data. In an embodiment of the present invention, an AD converter is configured to convert analog signals from a magnetic disk to multi-bit data. A buffer circuit holds successively multi-bit data transferred from the AD converter toward a Viterbi decoder, and outputs the held plural multi-bit data in parallel. A SRAM for ECC is used for storing multi-bit data transferred from the buffer circuit.
摘要翻译：根据本发明的一个实施例，能够在存储器中存储对应于从被转换为单位数据之前从介质读取的模拟信号的多位数据作为记录数据。在本发明的实施例中，AD转换器被配置为将来自磁盘的模拟信号转换成多位数据。缓冲电路将从AD转换器传送的连续的多位数据保持为维特比解码器，并且并行输出保持的多位数据。用于ECC的SRAM用于存储从缓冲电路传送的多位数据。

32. 发明申请

US20090086362A1 Recording disk and disk drive 有权
标题翻译：录制磁盘和磁盘驱动器
公开(公告)号：US20090086362A1
公开(公告)日：2009-04-02
申请号：US12008426
申请日：2008-01-10
申请人： Masashi Kisaka , Fuminori Sai , Naoyuki Minami , Sadamichi Sone
发明人： Masashi Kisaka , Fuminori Sai , Naoyuki Minami , Sadamichi Sone
IPC分类号： G11B5/58 , G11B5/82
CPC分类号： G11B5/59688 , G11B5/5547 , G11B5/59633
摘要： Embodiments of the present invention provide a recording disk capable of curtailing the amount of servo data to be stored thereon, and a disk drive. According to one embodiment, servo data area sets each of a first servo data area and plural second servo data areas arranged in that order in a read direction HR are arranged successively on each of tracks of a magnetic disk. Stored in a second sector data section included in the second servo data area is data representing a distance in the read direction HR from the position of the first servo data area to that of the same second servo data area. The amount of data stored in the second sector data section is less than that of data stored in a first sector data section included in the first servo data area.
摘要翻译：本发明的实施例提供一种能够减少要存储在其上的伺服数据量的记录盘和磁盘驱动器。根据一个实施例，伺服数据区域依次布置在磁盘的每个轨道上，依次布置在读取方向HR上按顺序布置的第一伺服数据区域和多个第二伺服数据区域中的每一个。存储在第二伺服数据区域中的第二扇区数据部分中的是表示从第一伺服数据区域的位置到同一第二伺服数据区域的读取方向HR的距离的数据。存储在第二扇区数据部分中的数据量小于存储在包括在第一伺服数据区域中的第一扇区数据部分中的数据量。

33. 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。

34. 发明授权

US07342735B2 Method of writing patterns onto a recording disk, and data storage device 失效
标题翻译：将图案写入记录盘的方法以及数据存储装置
公开(公告)号：US07342735B2
公开(公告)日：2008-03-11
申请号：US11223481
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
CPC分类号： G11B5/59633 , G11B5/59666
摘要： Embodiments of the invention relate to writing servo patterns having aligned phases onto a recording disk in a process to write the servo patterns onto the disk. In one embodiment, time aligned patterns are written onto a magnetic disk on the basis of time intervals between base patterns with timings aligned to each other throughout tracks on the disk. The time aligned patterns are written onto typically servo tracks at time intervals Ts with aligned timings. Then, on the basis of these time aligned patterns, product servo patterns are written onto the disk. A time aligned pattern is written onto the disk after the lapse of a predetermined write time period since detection of a base pattern corresponding to the time aligned pattern. The write time period is determined on the basis of time intervals between base patterns on adjacent tracks.
摘要翻译：本发明的实施例涉及在将伺服模式写入到盘上的过程中将具有排列相位的伺服模式写入到记录盘上。在一个实施例中，基于在盘上的轨迹上彼此对准的定时的基本图案之间的时间间隔，将时间对准图案写入磁盘。时间对准图案以对准的定时以时间间隔Ts被写入典型的伺服轨道。然后，基于这些时间对准图案，将产品伺服模式写入到盘上。在经过预定的写入时间段之后，由于检测到与时间对准图案对应的基本图案，时间对准图案被写入到盘上。基于相邻轨道上的基本图案之间的时间间隔来确定写入时间段。

35. 发明申请

US20070247736A1 Disk drive apparatus and method for writing and/or reading user data thereof 审中-公开
标题翻译：用于写入和/或读取其用户数据的磁盘驱动装置和方法
公开(公告)号：US20070247736A1
公开(公告)日：2007-10-25
申请号：US11788524
申请日：2007-04-19
申请人： Fuminori Sai , Kohji Takasaki , Yutaka Ozawa , Naoki Tajima
发明人： Fuminori Sai , Kohji Takasaki , Yutaka Ozawa , Naoki Tajima
IPC分类号： G11B5/09
CPC分类号： G11B5/59627 , G11B5/59688
摘要： Embodiments in accordance with the present invention suppress an adverse influence on a pattern of a magnetic disk due to its rotational jitter and write the pattern at more accurate timing. In accordance with one embodiment, a hard disk controller/microprocessing unit (HDC/MPU) controls a clock frequency of a data clock generation circuit so that a rotational jitter of the magnetic disk be compensated when writing and reading user data. The HDC/MPU expects a detection timing of next adjacent servo sector using an error between an actual detection timing and an expected detection timing of a servo sector which has already been detected. The HDC/MPU controls the clock frequency using the expected timing and writes and reads user data between current servo sector and next adjacent servo sector according to the clock signal.
摘要翻译：根据本发明的实施例抑制由于其旋转抖动对磁盘的图案的不利影响并且以更准确的定时写入图案。根据一个实施例，硬盘控制器/微处理单元（HDC / MPU）控制数据时钟产生电路的时钟频率，从而在写入和读取用户数据时补偿磁盘的旋转抖动。 HDC / MPU期望使用已经检测到的伺服扇区的实际检测定时和预期检测定时之间的误差来检测下一相邻伺服扇区的检测定时。 HDC / MPU使用预期定时控制时钟频率，并根据时钟信号在当前伺服扇区和下一个相邻伺服扇区之间写入和读取用户数据。

36. 发明申请

US20060262449A1 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：US20060262449A1
公开(公告)日：2006-11-23
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： G11B19/02
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。

37. 发明授权

US07023638B2 Data storage device, data read correction mechanism, and data read control method 失效
标题翻译：数据存储设备，数据读取校正机制和数据读取控制方法
公开(公告)号：US07023638B2
公开(公告)日：2006-04-04
申请号：US10676639
申请日：2003-09-30
申请人： Nobuya Matsubara , Fuminori Sai , Kohji Takasaki , Noboru Yoshida
发明人： Nobuya Matsubara , Fuminori Sai , Kohji Takasaki , Noboru Yoshida
IPC分类号： G11B5/09
CPC分类号： H03L7/091 , G11B5/00 , G11B5/012 , G11B20/1403 , G11B2005/001
摘要： A correction mechanism for use in a data storage system that allows data to be read even if the recorded data has been phase shifted.
摘要翻译：一种在数据存储系统中使用的校正机制，即使记录的数据已被相移也允许读取数据。

38. 发明申请

US20060056098A1 Method of writing patterns onto a recording disk, and data storage device 失效
标题翻译：将图案写入记录盘的方法以及数据存储装置
公开(公告)号：US20060056098A1
公开(公告)日：2006-03-16
申请号：US11223481
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 having aligned phases onto a recording disk in a process to write the servo patterns onto the disk. In one embodiment, time aligned patterns are written onto a magnetic disk on the basis of time intervals between base patterns with timings aligned to each other throughout tracks on the disk. The time aligned patterns are written onto typically servo tracks at time intervals Ts with aligned timings. Then, on the basis of these time aligned patterns, product servo patterns are written onto the disk. A time aligned pattern is written onto the disk after the lapse of a predetermined write time period since detection of a base pattern corresponding to the time aligned pattern. The write time period is determined on the basis of time intervals between base patterns on adjacent tracks.
摘要翻译：本发明的实施例涉及在将伺服模式写入到盘上的过程中将具有排列相位的伺服模式写入到记录盘上。在一个实施例中，基于在盘上的轨迹上彼此对准的定时的基本图案之间的时间间隔，将时间对准图案写入磁盘。时间对准图案以对准的定时以时间间隔Ts被写入典型的伺服轨道。然后，基于这些时间对准图案，将产品伺服模式写入到盘上。在经过预定的写入时间段之后，由于检测到与时间对准图案对应的基本图案，时间对准图案被写入到盘上。基于相邻轨道上的基本图案之间的时间间隔来确定写入时间周期。

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