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21. 发明授权

US08117518B2 Signal processing apparatus and a data recording and reproducing apparatus including local memory processor 有权
标题翻译：信号处理装置和包括本地存储处理器的数据记录和再现装置
公开(公告)号：US08117518B2
公开(公告)日：2012-02-14
申请号：US12003270
申请日：2007-12-21
申请人： Terumi Takashi , Seiichi Mita , Atsushi Saito
发明人： Terumi Takashi , Seiichi Mita , Atsushi Saito
IPC分类号： G06F11/00
CPC分类号： G11B20/10009 , G11B20/00086 , G11B20/10055 , G11B20/10074 , G11B20/10481 , G11B20/18 , G11B2020/10638 , G11B2020/183
摘要： In a data recovery processing, the conventional overhead, primarily, latency due to a rotational recording media is removed. Secondary, in a signal processing or in a recording and reproducing apparatus, reliability of data reproduction is improved by repeatedly processing data. These processing are achieved that input signal, i.e., raw analog signal read from the recording media is digitized to be stored in a secondary storage such as a memory or a FIFO memory. The apparatus includes a signal processing circuit to repeatedly process the stored digital signal in the secondary storage. When detecting data, operation of the circuit is efficiently controlled by a change over detector parameters, in which characteristics for the detecting performance. Resultantly, data recovery processing speed is increased and reliability of data reproduced is improved.
摘要翻译：在数据恢复处理中，传统的开销，主要是由旋转记录介质引起的等待时间被去除。在信号处理或记录和再现装置中，通过重复处理数据来提高数据再现的可靠性。实现这些处理，即将从记录介质读取的原始模拟信号的输入信号数字化以存储在诸如存储器或FIFO存储器的辅助存储器中。该装置包括信号处理电路，用于重复处理二次存储器中存储的数字信号。当检测到数据时，通过改变检测器参数来有效地控制电路的操作，其中检测性能的特性。从而提高数据恢复处理速度，提高数据再现的可靠性。

22. 发明申请

US20070030588A1 Calibration of reader/writer offset in hard disk drive using shingled recording 失效
标题翻译：硬盘驱动器中读写器偏移校准
公开(公告)号：US20070030588A1
公开(公告)日：2007-02-08
申请号：US11497975
申请日：2006-08-01
申请人： Hiroyuki Tsuchinaga , Terumi Takashi
发明人： Hiroyuki Tsuchinaga , Terumi Takashi
IPC分类号： G11B5/596
CPC分类号： G11B5/5534
摘要： Embodiments of the invention provide a disk drive that is capable of determining the offset of a magnetic head position through simple and easy processing in a case where the shingle write method is adopted, and that is capable of increasing the accuracy. In one embodiment, a disk drive comprises: a recording medium including data tracks, each of which is formed with part of the data track being overwritten by an adjacent data track on the inner circumferential side or by an adjacent data track on the outer circumferential side; a head assembly including a write head for writing information to the recording medium, and a read head for reading out information from the recording medium; and a control device for controlling a position of the head assembly relative to the recording medium. Position-error detection signals whose phases differ from each other are repeatedly written to the recording medium in the track direction with written positions of the position-error detection signals being deviated from each other by a track pitch in the track width direction; and the control device controls a position of the head assembly on the basis of a burst signal read by the read head.
摘要翻译：本发明的实施例提供一种磁盘驱动器，其能够通过在采用瓦兹写入方法的情况下通过简单且容易的处理来确定磁头位置的偏移，并且能够提高精度。在一个实施例中，磁盘驱动器包括：包括数据磁道的记录介质，每个记录介质形成有数据磁道的一部分被内周侧的相邻数据磁道或外周侧的相邻数据磁道覆盖 ; 包括用于将信息写入记录介质的写入头的头组件和用于从记录介质读出信息的读头; 以及用于控制头组件相对于记录介质的位置的控制装置。相位不同的位置误差检测信号在轨迹方向被重复地写入到记录介质上，其中位置误差检测信号的写入位置在轨道宽度方向上彼此偏离轨道间距; 并且控制装置基于由读取头读取的突发信号来控制头部组件的位置。

23. 发明申请

US20060232888A1 Disk drive with side erase control 失效
标题翻译：具有侧面擦除控制的磁盘驱动器
公开(公告)号：US20060232888A1
公开(公告)日：2006-10-19
申请号：US11404978
申请日：2006-04-13
申请人： Naoki Satoh , Hiroyuki Tsuchinaga , Terumi Takashi
发明人： Naoki Satoh , Hiroyuki Tsuchinaga , Terumi Takashi
IPC分类号： G11B5/48
CPC分类号： G11B5/59633 , G11B5/012 , G11B2005/0029
摘要： Embodiments of the invention provide a disk drive that is capable of effectively controlling a side erase, which is one of the problems with the use of the perpendicular recording technology. In one embodiment, tracks on a recording medium are formed concentrically or spirally by overwriting a primary side track, which is either an inner track or outer track, onto part of a secondary side track, which is on the side away from the primary side track. A head unit is installed so that a magnetic head positioned at one end of the head unit relatively may move over the recording medium and that the yaw angle prevailing at an end track of the primary side on the recording medium may be substantially zero.
摘要翻译：本发明的实施例提供一种能够有效地控制侧面擦除的盘驱动器，这是使用垂直记录技术的问题之一。在一个实施例中，记录介质上的轨道通过将作为内轨道或外轨道的一次侧轨道覆盖在远离初级侧轨道的一侧的次级侧轨道的一部分上而同心地或螺旋形地形成。安装头单元，使得位于头单元的一端的磁头相对可以在记录介质上移动，并且在记录介质上的初级侧的终端轨道处的偏航角度可以基本上为零。

24. 发明申请

US20060114137A1 Data processing method and circuit for data recording and reproducing and data recording and reproducing apparatus 有权
标题翻译：用于数据记录和再现的数据处理方法和电路以及数据记录和再现装置
公开(公告)号：US20060114137A1
公开(公告)日：2006-06-01
申请号：US11280435
申请日：2005-11-15
申请人： Morishi Izumita , Terumi Takashi , Yasuyuki Itou , Masaharu Kondou
发明人： Morishi Izumita , Terumi Takashi , Yasuyuki Itou , Masaharu Kondou
IPC分类号： H03M7/46
CPC分类号： G11B20/10009 , G11B20/1426 , G11B20/1833 , G11B20/1866
摘要： Embodiments of the invention a signal processing method capable of realizing low decoding error ratio by using a simple configuration free from unnecessary redundant bits. In one embodiment, user data (512 bytes+additional data) input to an input terminal is RLL-encoded by a RLL encoder 1. The data from the RLL encoder—1 is entered into a symbol error correction encoder where 9-bit symbol encoding is done. Its RS code portion is RLL-encoded by a RLL encoder—2. Signal read from a magnetic disk is entered into a RLL decoder—2 where the RS code portion is RLL-decoded. The signal from the RLL decoder—2 is then entered into a symbol error correction decoder where random read/write errors, burst errors attributable to defects and other errors are corrected to produce a (user data+RLL) signal. This data is output to an output terminal after being decoded by a RLL decoder—1.
摘要翻译：本发明的实施例能够通过使用没有不必要的冗余位的简单配置来实现低解码错误率的信号处理方法。在一个实施例中，输入到输入端的用户数据（512字节+附加数据）被RLL编码器1 RLL编码。来自RLL编码器1的数据被输入到符号错误校正 9位符号编码完成的编码器。其RS码部分由RLL编码器 2 RLL编码。从磁盘读取的信号被输入到RLL解码器2，其中RS码部分被RLL解码。然后将来自RLL解码器2的信号输入到符号纠错解码器，其中随机读/写错误，归因于缺陷和其他错误的突发错误被校正以产生（用户数据+ RLL）信号。该数据在被RLL解码器1解码之后被输出到输出端。

25. 发明授权

US06980385B2 Apparatus for information recording and reproducing 失效
标题翻译：用于信息记录和再现的装置
公开(公告)号：US06980385B2
公开(公告)日：2005-12-27
申请号：US10914243
申请日：2004-08-10
申请人： Takatoshi Kato , Takushi Nishiya , Hideyuki Yamakawa , Takashi Nara , Nobuaki Nakai , Hiroshi Ide , Shintaro Suzumura , Terumi Takashi
发明人： Takatoshi Kato , Takushi Nishiya , Hideyuki Yamakawa , Takashi Nara , Nobuaki Nakai , Hiroshi Ide , Shintaro Suzumura , Terumi Takashi
IPC分类号： G11B5/012 , G11B5/09 , G11B20/10 , G11B20/14
CPC分类号： G11B20/10009 , G11B5/012 , G11B5/09 , G11B20/1403
摘要： In order to generate a sampling clock having a higher accuracy, a synchronous signal generating circuit is provided with a phase error detector, detecting a phase error of a read out signal digitized on the basis of FDTS algorithm, and a VCO, controlling an oscillation frequency on the basis of a phase error detected by the phase error detector, to generate a synchronous signal by the VCO. On the basis of the synchronous signal generated by the synchronous signal generating circuit, an ADC digitizes the read out signal. The digitized read out signal is then converted to binary data by a detection circuit.
摘要翻译：为了产生具有更高精度的采样时钟，同步信号发生电路设置有相位误差检测器，检测基于FDTS算法数字化的读出信号的相位误差和控制振荡频率的VCO 基于由相位误差检测器检测到的相位误差，由VCO产生同步信号。基于由同步信号发生电路产生的同步信号，ADC对读出的信号进行数字化。然后，数字化读出信号由检测电路转换成二进制数据。

26. 发明授权

US06791776B2 Apparatus for information recording and reproducing 失效
标题翻译：用于信息记录和再现的装置
公开(公告)号：US06791776B2
公开(公告)日：2004-09-14
申请号：US09793924
申请日：2001-02-28
申请人： Takatoshi Kato , Takushi Nishiya , Hideyuki Yamakawa , Takashi Nara , Nobuaki Nakai , Hiroshi Ide , Shintaro Suzumura , Terumi Takashi
发明人： Takatoshi Kato , Takushi Nishiya , Hideyuki Yamakawa , Takashi Nara , Nobuaki Nakai , Hiroshi Ide , Shintaro Suzumura , Terumi Takashi
IPC分类号： G11B509
CPC分类号： G11B20/10009 , G11B5/012 , G11B5/09 , G11B20/1403
摘要： In order to generate a sampling clock having a higher accuracy, a synchronous signal generating circuit is provided with a phase error detector, detecting a phase error of a read out signal digitized on the basis of FDTS algorithm, and a VCO, controlling an oscillation frequency on the basis of a phase error detected by the phase error detector, to generate a synchronous signal by the VCO. On the basis of the synchronous signal generated by the synchronous signal generating circuit, an ADC digitizes the read out signal. The digitized read out signal is then converted to binary data by a detection circuit.
摘要翻译：为了产生具有更高精度的采样时钟，同步信号发生电路设置有相位误差检测器，检测基于FDTS算法数字化的读出信号的相位误差和控制振荡频率的VCO 基于由相位误差检测器检测到的相位误差，由VCO产生同步信号。基于由同步信号发生电路产生的同步信号，ADC对读出的信号进行数字化。然后，数字化读出信号由检测电路转换成二进制数据。

27. 发明授权

US06215744B1 Information recording/reproducing method and apparatus using EPRML connection processing system 失效
标题翻译：使用EPRML连接处理系统的信息记录/再现方法和装置
公开(公告)号：US06215744B1
公开(公告)日：2001-04-10
申请号：US09504796
申请日：2000-02-15
申请人： Seiichi Mita , Terumi Takashi , Naoki Satoh
发明人： Seiichi Mita , Terumi Takashi , Naoki Satoh
IPC分类号： G11B7005
CPC分类号： G11B20/10009 , G11B5/012 , G11B5/09
摘要： An information recording/reproducing apparatus includes first and second data demodulators having different data discriminating capabilities. The first data demodulator has a lower data discriminating capability and the second data demodulator has a higher data discriminating capability. When the reliability of reliability information for demodulation data generated by the first data demodulator, the second data demodulator is operated so that demodulation data generated by the first data demodulator is replaced by demodulation data generated by the second data demodulator during a period of time when the reliability of the reliability information is deteriorated.
摘要翻译：信息记录/再现装置包括具有不同数据鉴别能力的第一和第二数据解调器。第一数据解调器具有较低的数据鉴别能力，第二数据解调器具有较高的数据识别能力。当由第一数据解调器产生的解调数据的可靠性信息的可靠性操作时，第二数据解调器被操作，使得由第一数据解调器产生的解调数据被第二数据解调器产生的解调数据替换为在第可靠性信息的可靠性恶化。

28. 发明申请

US20090015960A1 Magnetic disk drive and magnetic disk medium 审中-公开
标题翻译：磁盘驱动器和磁盘介质
公开(公告)号：US20090015960A1
公开(公告)日：2009-01-15
申请号：US12217075
申请日：2008-06-30
申请人： Naoki Satoh , Yoshiteru Ishida , Yoshiju Watanabe , Terumi Takashi
发明人： Naoki Satoh , Yoshiteru Ishida , Yoshiju Watanabe , Terumi Takashi
IPC分类号： G11B15/46
CPC分类号： G11B19/26
摘要： Embodiments of the invention increase the convenience of a magnetic disk drive for portable use by shortening a period of time required to record a large amount of data, and by increasing the reproduction time, in the magnetic disk drive. In one embodiment, an area between servo data parts is interpolated by servo data parts, each of which stores a burst signal, so that the allocation density of a burst signal is made k times. At the time of write operation in which data is written, only the servo data parts are made use of to perform the servo control while a disk is driven at high rotational speed so as to reduce the recording time. At the time of read operation in which data is reproduced, the servo data parts are made use of to ensure the required precision of the servo control at low rotational speed that is 1/k of the rotational speed at the time of write operation. The reproduction at low rotational speed enables the reduction in power consumption.
摘要翻译：本发明的实施例通过缩短记录大量数据所需的时间周期以及通过增加磁盘驱动器中的再现时间来增加用于便携式使用的磁盘驱动器的便利性。在一个实施例中，伺服数据部分之间的区域由伺服数据部分内插，每个伺服数据部分存储脉冲串信号，使得脉冲信号的分配密度为k次。在写入数据的写入操作时，仅利用伺服数据部分来执行伺服控制，同时以高转速驱动盘，以便减少记录时间。在再现数据的读取操作时，利用伺服数据部分来确保在写入操作时转速为1 / k的低转速下的伺服控制所要求的精度。在低转速下的再现能够降低功耗。

29. 发明授权

US07372656B2 disk drive with side erase control 失效
标题翻译：具有侧面擦除控制的磁盘驱动器
公开(公告)号：US07372656B2
公开(公告)日：2008-05-13
申请号：US11404978
申请日：2006-04-13
申请人： Naoki Satoh , Hiroyuki Tsuchinaga , Terumi Takashi
发明人： Naoki Satoh , Hiroyuki Tsuchinaga , Terumi Takashi
IPC分类号： G11B15/18
CPC分类号： G11B5/59633 , G11B5/012 , G11B2005/0029
摘要： Embodiments of the invention provide a disk drive that is capable of effectively controlling a side erase, which is one of the problems with the use of the perpendicular recording technology. In one embodiment, tracks on a recording medium are formed concentrically or spirally by overwriting a primary side track, which is either an inner track or outer track, onto part of a secondary side track, which is on the side away from the primary side track. A head unit is installed so that a magnetic head positioned at one end of the head unit relatively may move over the recording medium and that the yaw angle prevailing at an end track of the primary side on the recording medium may be substantially zero.
摘要翻译：本发明的实施例提供一种能够有效地控制侧面擦除的盘驱动器，这是使用垂直记录技术的问题之一。在一个实施例中，记录介质上的轨道通过将作为内轨道或外轨道的一次侧轨道覆盖在远离初级侧轨道的一侧的次级侧轨道的一部分上而同心地或螺旋形地形成。安装头单元，使得位于头单元的一端的磁头相对可以在记录介质上移动，并且在记录介质上的初级侧的终端轨道处的偏航角度可以基本上为零。

30. 发明授权

US07268707B2 Coding device and decoding device 有权
标题翻译：编码设备和解码设备
公开(公告)号：US07268707B2
公开(公告)日：2007-09-11
申请号：US11394531
申请日：2006-03-30
申请人： Terumi Takashi , Yoshiju Watanabe , Morishi Izumita , Yasuyuki Itou
发明人： Terumi Takashi , Yoshiju Watanabe , Morishi Izumita , Yasuyuki Itou
IPC分类号： H03M7/00
CPC分类号： H03M5/145 , G11B20/10175 , G11B20/10296 , G11B20/1426 , G11B20/1833 , G11B20/1866 , G11B2220/2516
摘要： Embodiments of the invention allow relatively simple circuits to provide a coding device capable of coding longer bit-length data suitably for disk apparatus and a decoding device capable of decoding the data coded by the coding device. In one embodiment, a coding device comprises: a coder which, based on an M bits code string, produces an (M+1) bits coded string where each of the plural bits which may appear in the M bits code string is limited in run length; a preprocessor which produces an M bits code string by removing (N−M) bits respectively from predefined (N−M) positions of an incoming N bits code string and outputs the M bits code string to the coder; and a postprocessor which produces and outputs an (N+1) bits code string by inserting the (N−M) bits, which are removed by the preprocessor, into predefined (N−M) respective insertion positions of the (M+1) bits coded string output from the coder.
摘要翻译：本发明的实施例允许相对简单的电路提供能够适当地对盘装置编码较长位长数据的编码装置和能够对由编码装置编码的数据进行解码的解码装置。在一个实施例中，编码装置包括：编码器，其基于M比特码串产生（M + 1）比特编码串，其中可能出现在M比特码串中的多个比特中的每一个在运行中被限制长度; 通过从输入N位代码串的预定义（N-M）位移除（N-M）位来产生M位代码串的预处理器，并将M位代码串输出到编码器; 以及后处理器，其通过将由预处理器移除的（NM）位插入到（M + 1）位编码串输出的预定义（NM）相应插入位置中来产生并输出（N + 1）位代码串从编码器。

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