公开(公告)号：US07593179B2

公开(公告)日：2009-09-22

申请号：US12105868

申请日：2008-04-18

申请人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

发明人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

IPC分类号： G11B21/02

CPC分类号： G11B19/042

摘要： A control apparatus detects positional information of a head performing writing processing every predetermined time interval, and computes next-sample projected positional information of the head based on the difference between the positional information detected the previous time and the positional information detected the current time, and the current detected positional information for every position information detected. The control apparatus determines whether the computed next-sample projected positional information is greater than a next-sample projected position threshold which is a predetermined threshold. Following this, in the case that determination is made that the next-sample projected positional information is greater than the projected position threshold, the disk control apparatus controls a storage device to stop the writing processing after the writing processing is performed through the end of the sector wherein the writing processing is currently being performed.

摘要翻译： 控制装置每隔预定时间间隔检测执行写入处理的头部的位置信息，并且基于前一时间检测到的位置信息与检测到的当前时间的位置信息之间的差异来计算头部的下一样本投影位置信息，以及 当前检测到的每个位置信息的位置信息。 控制装置确定所计算的下一样本投影位置信息是否大于作为预定阈值的下一样本投影位置阈值。 接下来，在确定下一个样本投影位置信息大于投影位置阈值的情况下，盘控制装置控制存储装置在执行写入处理之后停止写入处理 其中当前正在执行写入处理。

公开(公告)号：US20090059415A1

公开(公告)日：2009-03-05

申请号：US12121101

申请日：2008-05-15

申请人： Takeshi Hara ,  Yoshifumi Obara ,  Yukio Abe ,  Shigenori Yanagi ,  Mitsuo Kamimura

发明人： Takeshi Hara ,  Yoshifumi Obara ,  Yukio Abe ,  Shigenori Yanagi ,  Mitsuo Kamimura

IPC分类号： G11B21/02

CPC分类号： G11B5/59633 ,  G11B5/59688

摘要： A storage device receives and holds a storage medium that is subjected to first servo writing processing for writing servo information, a Gray code of which is offset, from an inner cylinder or an outer cylinder to a predetermined cylinder and, after the first servo writing processing, subjected to second servo writing processing for writing servo information from an opposite direction to the predetermined cylinder and in which Gray codes are written to be offset not to overlap in the first or second servo writing processing and the pieces of servo information having different mark patterns are written in the first servo writing processing and the second servo writing processing. The storage device acquires cylinder information and mark patterns from the servo information written in the held storage medium and controls a position of a head based on the acquired cylinder information and mark patterns.

摘要翻译： 存储装置接收并保持经历了第一伺服写入处理的存储介质，用于将格雷码从内圆筒或外圆筒写入预定圆柱体，并且在第一伺服写入处理之后 经过第二伺服写入处理，用于将伺服信息从与预定气缸相反的方向写入，并且其中格雷码被写入以在第一或第二伺服写入处理中不重叠，并且具有不同标记图案的伺服信息 写入第一伺服写入处理和第二伺服写入处理。 存储装置从记录在保持的存储介质中的伺服信息中取得圆筒信息和标记图案，并根据获取的圆筒信息和标记图案来控制头部的位置。

公开(公告)号：US07468854B2

公开(公告)日：2008-12-23

申请号：US11645189

申请日：2006-12-22

申请人： Satoshi Yamashita ,  Syunji Saitou ,  Yukio Abe ,  Shigenori Yanagi

发明人： Satoshi Yamashita ,  Syunji Saitou ,  Yukio Abe ,  Shigenori Yanagi

IPC分类号： G11B21/02 ,  G11B5/00

CPC分类号： G11B5/607

摘要： An amplitude measurement unit measures an amplitude of a read signal from a preamble unit in a servo area of a predetermined frame number m per one rotation of the recording medium for a predetermined cycle number n while increasing an electric power amount distributed to the heater in the state in which the head is positioned to a track on the recording medium, and a mean amplitude calculating unit calculates a mean amplitude from an amplitude measurement value which is measured by the number which is the frame number m multiplied by the cycle number n. A contact determination unit calculates a mean amplitude variation amount per a unit heater electric power amount as a contact determination value, and determines that the head is in contact with the recording medium when the contact determination value is lower than a predetermined threshold value, and a flying height calculating unit which calculates a flying height of the head with respect to the surface of the recording medium from the heater electric power amount at the point when contact is determined.

摘要翻译： 幅度测量单元在预定周期数n的每一记录介质旋转的预定帧数m的伺服区域中的前导码单元中测量读取信号的幅度，同时增加分配给加热器的电力量 头部位于记录介质上的轨迹的状态，平均幅度计算单元根据作为帧数m乘以周期数n的数量测量的振幅测量值来计算平均振幅。 接触确定单元计算每单位加热器电力量的平均幅度变化量作为接触确定值，并且当接触确定值低于预定阈值时，确定头与记录介质接触，并且 飞行高度计算单元，其根据确定接触点处的加热器电力量，计算头部相对于记录介质表面的飞行高度。

公开(公告)号：US07706094B2

公开(公告)日：2010-04-27

申请号：US12121101

申请日：2008-05-15

申请人： Takeshi Hara ,  Yoshifumi Obara ,  Yukio Abe ,  Shigenori Yanagi ,  Mitsuo Kamimura

发明人： Takeshi Hara ,  Yoshifumi Obara ,  Yukio Abe ,  Shigenori Yanagi ,  Mitsuo Kamimura

IPC分类号： G11B21/02 ,  G11B5/596 ,  G11B20/20 ,  G11B5/09

CPC分类号： G11B5/59633 ,  G11B5/59688

摘要： A storage device receives and holds a storage medium that is subjected to first servo writing processing for writing servo information, a Gray code of which is offset, from an inner cylinder or an outer cylinder to a predetermined cylinder and, after the first servo writing processing, subjected to second servo writing processing for writing servo information from an opposite direction to the predetermined cylinder and in which Gray codes are written to be offset not to overlap in the first or second servo writing processing and the pieces of servo information having different mark patterns are written in the first servo writing processing and the second servo writing processing. The storage device acquires cylinder information and mark patterns from the servo information written in the held storage medium and controls a position of a head based on the acquired cylinder information and mark patterns.

摘要翻译： 存储装置接收并保持经历了第一伺服写入处理的存储介质，用于将格雷码从内圆筒或外圆筒写入预定圆柱体，并且在第一伺服写入处理之后 经过第二伺服写入处理，用于将伺服信息从与预定气缸相反的方向写入，并且其中格雷码被写入以在第一或第二伺服写入处理中不重叠，并且具有不同标记图案的伺服信息 写入第一伺服写入处理和第二伺服写入处理。 存储装置从记录在保持的存储介质中的伺服信息中取得圆筒信息和标记图案，并根据获取的圆筒信息和标记图案来控制头部的位置。

公开(公告)号：US20080291565A1

公开(公告)日：2008-11-27

申请号：US12105868

申请日：2008-04-18

申请人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

发明人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

IPC分类号： G11B21/02

CPC分类号： G11B19/042

摘要： A control apparatus detects positional information of a head performing writing processing every predetermined time interval, and computes next-sample projected positional information of the head based on the difference between the positional information detected the previous time and the positional information detected the current time, and the current detected positional information for every position information detected. The control apparatus determines whether the computed next-sample projected positional information is greater than a next-sample projected position threshold which is a predetermined threshold. Following this, in the case that determination is made that the next-sample projected positional information is greater than the projected position threshold, the disk control apparatus controls a storage device to stop the writing processing after the writing processing is performed through the end of the sector wherein the writing processing is currently being performed.

摘要翻译： 控制装置每隔预定时间间隔检测执行写入处理的头部的位置信息，并且基于前次检测到的位置信息与检测到的当前时间的位置信息之间的差异来计算头部的下一样本投影位置信息，以及 当前检测到的每个位置信息的位置信息。 控制装置确定所计算的下一样本投影位置信息是否大于作为预定阈值的下一样本投影位置阈值。 接下来，在确定下一个样本投影位置信息大于投影位置阈值的情况下，盘控制装置控制存储装置在执行写入处理之后停止写入处理 其中当前正在执行写入处理。

公开(公告)号：US07321477B2

公开(公告)日：2008-01-22

申请号：US11335127

申请日：2006-01-19

申请人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

发明人： Atsushi Suzuki ,  Yukio Abe ,  Shigenori Yanagi

IPC分类号： G11B19/04 ,  G11B19/02 ,  G11B5/596

CPC分类号： G11B19/20 ,  G11B19/04

摘要： A disk control apparatus controls a disk driving unit that performs read/write of data with a head. A vibration detecting unit detects a vibration of the disk driving unit. A disk control unit controls the disk driving unit based on the detected vibration.

摘要翻译： 盘控制装置控制用头执行数据读/写的盘驱动单元。 振动检测单元检测盘驱动单元的振动。 磁盘控制单元基于检测到的振动来控制磁盘驱动单元。

公开(公告)号：US20070291397A1

公开(公告)日：2007-12-20

申请号：US11588767

申请日：2006-10-27

申请人： Takao Abe ,  Yukio Abe ,  Shigenori Yanagi

发明人： Takao Abe ,  Yukio Abe ,  Shigenori Yanagi

IPC分类号： G11B21/02

CPC分类号： G11B19/042 ,  G11B5/6005 ,  G11B5/6029

摘要： A head-slap detecting device detects a head slap. The head slap causes a storage medium to be slapped by at least one storage-medium driving unit that performs at least one of reproduction and recording of data from and to the storage medium. The head-slap detecting device includes a detecting unit that detects the head slap by determining whether a first variable gain obtained from a variable gain amplifier that amplifies an output of data reproduced by the storage-medium driving unit exceeds a predetermined threshold.

摘要翻译： 头拍检测装置检测头拍。 头枕使得存储介质被至少一个存储介质驱动单元打印，该存储介质驱动单元执行从存储介质再现和记录数据中的至少一个。 头拍检测装置包括检测单元，其通过确定从可变增益放大器获得的放大由存储介质驱动单元再现的数据的输出的第一可变增益是否超过预定阈值来检测头拍。

公开(公告)号：US07623314B2

公开(公告)日：2009-11-24

申请号：US11998326

申请日：2007-11-29

申请人： Satoshi Yamashita ,  Shunji Saitoh ,  Yukio Abe ,  Shigenori Yanagi

发明人： Satoshi Yamashita ,  Shunji Saitoh ,  Yukio Abe ,  Shigenori Yanagi

IPC分类号： G11B21/02 ,  G11B27/36

CPC分类号： G11B5/607 ,  G11B5/6076

摘要： A head control device for controlling, through thermal expansion of a heater, a position of a head for reading and writing data from and to a storage medium, includes a heater control unit that increases a current supplied to the heater stepwise; and an external-force sample retrieving unit that retrieves sampling values of signals each indicating a magnitude of an external force acting on the head in a moving direction of a head support mechanism. The head control device also includes an external-force evaluating unit that calculates a representative value of the sampling values retrieved by the external-force sample retrieving unit to evaluate the magnitude of the external force every time the heater control unit increases the current; and a contact detecting unit that detects contact between the head and the storage medium by comparing each evaluation result by the external-force evaluating unit with a predetermined threshold value.

摘要翻译： 一种头控制装置，用于通过加热器的热膨胀来控制用于从存储介质读取和写入数据的头部的位置，其包括加热器控制单元，其逐步增加供应给加热器的电流; 以及外力取样单元，其检索各自表示在头部支撑机构的移动方向上作用在头部上的外力的大小的信号的采样值。 头部控制装置还包括外力评估单元，其计算由外力抽样检索单元检索出的取样值的代表值，以便每当加热器控制单元增加电流时评估外力的大小; 以及接触检测单元，其通过将外力评估单元的每个评估结果与预定阈值进行比较来检测头部和存储介质之间的接触。

公开(公告)号：US07477468B2

公开(公告)日：2009-01-13

申请号：US11586833

申请日：2006-10-26

申请人： Takahiro Aoki ,  Takeshi Hara ,  Shigenori Yanagi ,  Yukio Abe ,  Takao Abe

发明人： Takahiro Aoki ,  Takeshi Hara ,  Shigenori Yanagi ,  Yukio Abe ,  Takao Abe

IPC分类号： G11B21/02

CPC分类号： G11B21/12 ,  G11B5/54

摘要： A retraction control unit controls a retraction of a head of a storage device to a retraction position apart from a ramp by a predetermined distance. When the head is retracted from the retraction position to the ramp, a speed control unit controls a speed of the head to ascend the ramp to be constant by outputting a preset control signal.

摘要翻译： 退避控制单元控制存储装置的头部到远离斜坡的缩回位置缩回预定距离。 当头部从缩回位置缩回到斜坡时，速度控制单元通过输出预设控制信号来控制头部的速度上升到斜坡以恒定。

公开(公告)号：US20080218898A1

公开(公告)日：2008-09-11

申请号：US11998326

申请日：2007-11-29

申请人： Satoshi Yamashita ,  Shunji Saitoh ,  Yukio Abe ,  Shigenori Yanagi

发明人： Satoshi Yamashita ,  Shunji Saitoh ,  Yukio Abe ,  Shigenori Yanagi

IPC分类号： G11B5/596 ,  G11B21/02

CPC分类号： G11B5/607 ,  G11B5/6076

摘要： A head control device for controlling, through thermal expansion of a heater, a position of a head for reading and writing data from and to a storage medium, includes a heater control unit that increases a current supplied to the heater stepwise; and an external-force sample retrieving unit that retrieves sampling values of signals each indicating a magnitude of an external force acting on the head in a moving direction of a head support mechanism. The head control device also includes an external-force evaluating unit that calculates a representative value of the sampling values retrieved by the external-force sample retrieving unit to evaluate the magnitude of the external force every time the heater control unit increases the current; and a contact detecting unit that detects contact between the head and the storage medium by comparing each evaluation result by the external-force evaluating unit with a predetermined threshold value.

摘要翻译： 一种头控制装置，用于通过加热器的热膨胀来控制用于从存储介质读取和写入数据的头部的位置，其包括加热器控制单元，其逐步增加供应给加热器的电流; 以及外力取样单元，其检索各自表示在头部支撑机构的移动方向上作用在头部上的外力的大小的信号的采样值。 头部控制装置还包括外力评估单元，其计算由外力抽样检索单元检索出的取样值的代表值，以便每当加热器控制单元增加电流时评估外力的大小; 以及接触检测单元，其通过将外力评估单元的每个评估结果与预定阈值进行比较来检测头部和存储介质之间的接触。