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1. 发明授权

US08291190B2 Disk drive including a host interface supporting different sizes of data sectors and method for writing data thereto 有权
标题翻译：磁盘驱动器包括支持不同大小的数据扇区的主机接口和用于向其写入数据的方法
公开(公告)号：US08291190B2
公开(公告)日：2012-10-16
申请号：US12545788
申请日：2009-08-21
申请人： Yoshiju Watanabe , Toshio Kakihara , Koichi Arai , Terumi Takashi , Yuzo Nakagawa
发明人： Yoshiju Watanabe , Toshio Kakihara , Koichi Arai , Terumi Takashi , Yuzo Nakagawa
IPC分类号： G06F13/00 , G06F13/28
CPC分类号： G11B5/012 , G11B5/09 , G11B27/11 , G11B27/36 , G11B2220/2516
摘要： A method for writing data to a disk drive. The method includes: receiving a write command; and, determining whether a beginning and an end of a rewrite area specified by the write command agree with boundaries of large-sized data sectors on a disk. The method also includes: reading head and tail data sectors and making a backup of the head and tail data sectors in first and second non-volatile memory areas, respectively, if the beginning of the rewrite area does not agree with the boundaries. The method includes starting a rewrite of the rewrite area after completing backups into first and second non-volatile memory areas. Moreover, the method includes: determining a state stage by using data in first, second, third and fourth non-volatile memory areas if a power shut-down occurs during execution of the write command; and, executing a recovery process in accordance with the determined state stage.
摘要翻译：一种将数据写入磁盘驱动器的方法。该方法包括：接收写命令; 并且确定由写入命令指定的重写区域的开始和结束是否与盘上的大尺寸数据扇区的边界一致。该方法还包括：如果重写区域的开始与边界不一致，则分别读取头部和尾部数据扇区并分别在第一和第二非易失性存储区域中备份头尾数据扇区。该方法包括在完成对第一和第二非易失性存储器区域的备份之后重新开始重写区域的重写。此外，该方法包括：如果在写入命令的执行期间发生电源关闭，则通过使用第一，第二，第三和第四非易失性存储器区域中的数据来确定状态级; 以及根据所确定的状态阶段执行恢复处理。

2. 发明申请

US20110072232A1 DISK DRIVE INCLUDING A HOST INTERFACE SUPPORTING DIFFERENT SIZES OF DATA SECTORS AND METHOD FOR WRITING DATA THERETO 有权
标题翻译：磁盘驱动器，包括支持数据区的不同大小的主机接口和写入数据的方法
公开(公告)号：US20110072232A1
公开(公告)日：2011-03-24
申请号：US12545788
申请日：2009-08-21
申请人： Yoshiju Watanabe , Toshio Kakihara , Koichi Arai , Terumi Takashi , Yuzo Nakagawa
发明人： Yoshiju Watanabe , Toshio Kakihara , Koichi Arai , Terumi Takashi , Yuzo Nakagawa
IPC分类号： G06F12/02
CPC分类号： G11B5/012 , G11B5/09 , G11B27/11 , G11B27/36 , G11B2220/2516
摘要： A method for writing data to a disk drive. The method includes: receiving a write command; and, determining whether a beginning and an end of a rewrite area specified by the write command agree with boundaries of large-sized data sectors on a disk. The method also includes: reading head and tail data sectors and making a backup of the head and tail data sectors in first and second non-volatile memory areas, respectively, if the beginning of the rewrite area does not agree with the boundaries. The method includes starting a rewrite of the rewrite area after completing backups into first and second non-volatile memory areas. Moreover, the method includes: determining a state stage by using data in first, second, third and fourth non-volatile memory areas if a power shut-down occurs during execution of the write command; and, executing a recovery process in accordance with the determined state stage.
摘要翻译：一种将数据写入磁盘驱动器的方法。该方法包括：接收写命令; 并且确定由写入命令指定的重写区域的开始和结束是否与盘上的大尺寸数据扇区的边界一致。该方法还包括：如果重写区域的开始与边界不一致，则分别读取头部和尾部数据扇区并分别在第一和第二非易失性存储区域中备份头尾数据扇区。该方法包括在完成对第一和第二非易失性存储器区域的备份之后重新开始重写区域的重写。此外，该方法包括：如果在写入命令的执行期间发生电源关闭，则通过使用第一，第二，第三和第四非易失性存储器区域中的数据来确定状态级; 以及根据所确定的状态阶段执行恢复处理。

3. 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。

4. 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。

5. 发明授权

US07256953B2 Data synchronizing signal detector, signal processing device using the detector, information recording and reproducing apparatus having the detector and the device, data synchronizing signal detecting method, and information recording medium for using in the method 失效
标题翻译：数据同步信号检测器，使用检测器的信号处理装置，具有检测器和装置的信息记录和再现装置，数据同步信号检测方法和用于该方法的信息记录介质
公开(公告)号：US07256953B2
公开(公告)日：2007-08-14
申请号：US10910532
申请日：2004-08-03
申请人： Yoshiju Watanabe , Terumi Takashi
发明人： Yoshiju Watanabe , Terumi Takashi
IPC分类号： G11B5/09 , G11B5/035
CPC分类号： H04L1/0047 , G11B5/012 , G11B5/09 , G11B20/10009 , G11B27/10 , G11B27/3027 , H04L1/0041 , H04L1/0054 , H04L7/0008 , H04L7/04
摘要： A data discriminating unit includes a data discriminator and a sync signal discriminator. A data sync signal is detected for the bit string discriminated from the output of the sync signal discriminator, and the data is demodulated for the bit string discriminated from the output of the data discriminator, thereby optimizing the signal to a form suitable for discrimination and detection of the data sync signal and demodulation for data reproduction. As a result, the detection performance of the data sync signal can be improved while maintaining the data discrimination performance. A Viterbi decoder is used for discrimination by the data discriminator and the sync signal discriminator for the optimization thereby to optimize the number of states, the number of paths for state transition and the path memory length. A signal having no continuous inversions of the recording data is used as the data sync signal.
摘要翻译：数据识别单元包括数据鉴别器和同步信号鉴别器。针对从同步信号鉴别器的输出识别的比特串检测数据同步信号，并且对于与数据鉴别器的输出鉴别的比特串对数据进行解调，从而将信号优化为适合于鉴别和检测的形式的数据同步信号和解调用于数据再现。结果，可以在保持数据辨别性能的同时提高数据同步信号的检测性能。维特比解码器用于由数据鉴别器和用于优化的同步信号鉴别器进行鉴别，从而优化状态数量，状态转换路径数和路径存储器长度。作为数据同步信号，使用没有连续反转记录数据的信号。

6. 发明授权

US06661594B2 Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit 有权
标题翻译：信号处理电路和使用该信号的信息记录/再现装置，以及用于优化均衡器电路的系数的方法
公开(公告)号：US06661594B2
公开(公告)日：2003-12-09
申请号：US10277695
申请日：2002-10-23
申请人： Naoki Satoh , Seiichi Mita , Shoichi Miyazawa , Terumi Takashi , Yosuke Hori , Yoshiju Watanabe , Akihiko Hirano , Satoshi Minoshima , Hideki Miyasaka , Toshihiro Nitta , Tomoaki Hirai , Ryushi Shimokawa , Koji Shida , Yasuhide Ouchi
发明人： Naoki Satoh , Seiichi Mita , Shoichi Miyazawa , Terumi Takashi , Yosuke Hori , Yoshiju Watanabe , Akihiko Hirano , Satoshi Minoshima , Hideki Miyasaka , Toshihiro Nitta , Tomoaki Hirai , Ryushi Shimokawa , Koji Shida , Yasuhide Ouchi
IPC分类号： G11B535
CPC分类号： G11B20/10055 , G11B5/035 , G11B5/09 , G11B20/10009 , G11B20/10481
摘要： A signal processing circuit for a magnetic recording/reproducing apparatus, including at least an AGC, a PLL, a LPF, an equalizer circuit and a detection circuit, wherein a coefficient compensation circuit is formed by defining a constitution of the equalizer circuit, an error detection circuit is provided which operates by receiving input from the detection circuit, and the LSI is formed by a plurality of analog and digital chips, and the analog and digital chips are connected by current-output type D/A converters connected to at least the AGC and the PLL.
摘要翻译：一种用于至少包括AGC，PLL，LPF，均衡器电路和检测电路的磁记录/再现装置的信号处理电路，其中通过定义均衡器电路的结构形成系数补偿电路，错误提供检测电路，其通过接收来自检测电路的输入而工作，并且LSI由多个模拟和数字芯片形成，并且模拟和数字芯片通过电流输出型D / A转换器连接至少至少 AGC和PLL。

7. 发明申请

US20060227451A1 Magnetic disk drive and magnetic disk medium 失效
公开(公告)号：US20060227451A1
公开(公告)日：2006-10-12
申请号：US11400579
申请日：2006-04-07
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： G11B21/02 , G11B5/09 , 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.

8. 发明申请

US20050007684A1 Data synchronizing signal detector, signal processing device using the detector, information recording and reproducing apparatus having the detector and the device, data synchronizing signal detecting method, and information recording medium for using in the method 失效
标题翻译：数据同步信号检测器，使用检测器的信号处理装置，具有检测器和装置的信息记录和再现装置，数据同步信号检测方法和用于该方法的信息记录介质
公开(公告)号：US20050007684A1
公开(公告)日：2005-01-13
申请号：US10910532
申请日：2004-08-03
申请人： Yoshiju Watanabe , Terumi Takashi
发明人： Yoshiju Watanabe , Terumi Takashi
IPC分类号： G11B20/14 , G11B5/012 , G11B5/09 , G11B20/10 , G11B20/18 , G11B27/10 , G11B27/30 , H04L1/00 , H04L7/04 , H04L7/08
CPC分类号： H04L1/0047 , G11B5/012 , G11B5/09 , G11B20/10009 , G11B27/10 , G11B27/3027 , H04L1/0041 , H04L1/0054 , H04L7/0008 , H04L7/04
摘要： A data discriminating unit includes a data discriminator and a sync signal discriminator. A data sync signal is detected for the bit string discriminated from the output of the sync signal discriminator, and the data is demodulated for the bit string discriminated from the output of the data discriminator, thereby optimizing the signal to a form suitable for discrimination and detection of the data sync signal and demodulation for data reproduction. As a result, the detection performance of the data sync signal can be improved while maintaining the data discrimination performance. A Viterbi decoder is used for discrimination by the data discriminator and the sync signal discriminator for the optimization thereby to optimize the number of states, the number of paths for state transition and the path memory length. A signal having no continuous inversions of the recording data is used as the data sync signal.
摘要翻译：数据识别单元包括数据鉴别器和同步信号鉴别器。针对从同步信号鉴别器的输出识别的比特串检测数据同步信号，并且对于与数据鉴别器的输出鉴别的比特串对数据进行解调，从而将信号优化为适合于鉴别和检测的形式的数据同步信号和解调用于数据再现。结果，可以在保持数据辨别性能的同时提高数据同步信号的检测性能。维特比解码器用于由数据鉴别器和用于优化的同步信号鉴别器进行鉴别，从而优化状态数量，状态转换路径数和路径存储器长度。作为数据同步信号，使用没有连续反转记录数据的信号。

9. 发明授权

US06791777B2 DATA SYNCHRONIZING SIGNAL DETECTOR, SIGNAL PROCESSING DEVICE USING THE DETECTOR, INFORMATION RECORDING AND REPRODUCING APPARATUS HAVING THE DETECTOR AND THE DEVICE, DATA SYNCHRONIZING SIGNAL DETECTING METHOD, AND INFORMATION RECORDING MEDIUM FOR USING IN THE METHOD 有权
标题翻译：数据同步信号检测器，使用检测器的信号处理装置，具有检测器和设备的信息记录和再现装置，数据同步信号检测方法和用于方法的信息记录介质
公开(公告)号：US06791777B2
公开(公告)日：2004-09-14
申请号：US09784555
申请日：2001-02-16
申请人： Yoshiju Watanabe , Terumi Takashi
发明人： Yoshiju Watanabe , Terumi Takashi
IPC分类号： G11B509
CPC分类号： H04L1/0047 , G11B5/012 , G11B5/09 , G11B20/10009 , G11B27/10 , G11B27/3027 , H04L1/0041 , H04L1/0054 , H04L7/0008 , H04L7/04
摘要： A data discriminating unit includes a data discriminator and a sync signal discriminator. A data sync signal is detected for the bit string discriminated from the output of the sync signal discriminator, and the data is demodulated for the bit string discriminated from the output of the data discriminator, thereby optimizing the signal to a form suitable for discrimination and detection of the data sync signal and demodulation for data reproduction. As a result, the detection performance of the data sync signal can be improved while maintaining the data discrimination performance. A Viterbi decoder is used for discrimination by the data discriminator and the sync signal discriminator for the optimization thereby to optimize the number of states, the number of paths for state transition and the path memory length. A signal having no continuous inversions of the recording data is used as the data sync signal.
摘要翻译：数据识别单元包括数据鉴别器和同步信号鉴别器。针对从同步信号鉴别器的输出识别的比特串检测数据同步信号，并且对于与数据鉴别器的输出鉴别的比特串对数据进行解调，从而将信号优化为适合于鉴别和检测的形式的数据同步信号和解调用于数据再现。结果，可以在保持数据辨别性能的同时提高数据同步信号的检测性能。维特比解码器用于由数据鉴别器和用于优化的同步信号鉴别器进行鉴别，从而优化状态数量，状态转换路径数和路径存储器长度。作为数据同步信号，使用没有连续反转记录数据的信号。

10. 发明授权

US5818655A Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit 失效
公开(公告)号：US5818655A
公开(公告)日：1998-10-06
申请号：US506635
申请日：1995-07-25
申请人： Naoki Satoh , Seiichi Mita , Shoichi Miyazawa , Terumi Takashi , Yosuke Hori , Yoshiju Watanabe , Akihiko Hirano , Satoshi Minoshima , Hideki Miyasaka , Toshihiro Nitta , Tomoaki Hirai , Ryushi Shimokawa , Koji Shida , Yasuhide Ouchi
发明人： Naoki Satoh , Seiichi Mita , Shoichi Miyazawa , Terumi Takashi , Yosuke Hori , Yoshiju Watanabe , Akihiko Hirano , Satoshi Minoshima , Hideki Miyasaka , Toshihiro Nitta , Tomoaki Hirai , Ryushi Shimokawa , Koji Shida , Yasuhide Ouchi
IPC分类号： G11B5/035 , G11B5/09 , G11B20/10
CPC分类号： G11B20/10055 , G11B20/10009 , G11B20/10481 , G11B5/035 , G11B5/09
摘要： A signal processing circuit for a magnetic recording/reproducing apparatus, including at least an AGC, a PLL, a LPF, an equalizer circuit and a detection circuit, wherein a coefficient compensation circuit is formed by defining a constitution of the equalizer circuit, an error detection circuit is provided which operates by receiving input from the detection circuit, and the LSI is formed by a plurality of analog and digital chips, and the analog and digital chips are connected by current-output type D/A converters connected to at least the AGC and the PLL.

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