公开(公告)号：US6064541A

公开(公告)日：2000-05-16

申请号：US848138

申请日：1997-04-28

申请人： Tatsuro Sasamoto ,  Isamu Tomita ,  Keiji Aruga

发明人： Tatsuro Sasamoto ,  Isamu Tomita ,  Keiji Aruga

IPC分类号： G11B5/596 ,  G11B21/10

CPC分类号： G11B5/59688

摘要： Disclosed are a servo pattern writing method for magnetic disk drives making it possible to write a high-density and easily controllable servo pattern with high producibility, and a magnetic disk drive in which a servo pattern is written according to the method. The servo pattern writing method for magnetic disk drives in which a servo pattern is written on a plurality of surfaces in a magnetic disk drive having the plurality of surfaces comprises a step of writing a master servo pattern on a master surface that is one of the plurality of surfaces, and a step of writing a servo pattern on the surfaces other than the master surface while performing positioning on the basis of the master servo pattern. The master servo pattern contains a pattern identical to the servo pattern to be written on the surfaces other than the master surface. The master servo pattern is written before the master surface is incorporated in a main unit of the magnetic disk drive. Part of the master servo pattern other than the pattern identical to the servo pattern is deleted after the servo pattern is written on the surfaces other than the master surface.

摘要翻译： 公开了一种用于磁盘驱动器的伺服模式写入方法，其可以以高可生产性写入高密度且容易控制的伺服模式，以及根据该方法写入伺服模式的磁盘驱动器。 在具有多个表面的磁盘驱动器的多个表面上写入伺服图形的磁盘驱动器的伺服图案写入方法包括在主表面上写入主伺服图案的步骤，该主表面是多个 并且在基于主伺服模式执行定位的同时，在主表面以外的表面上写入伺服图案的步骤。 主伺服模式包含与要写在主表面以外的表面上的伺服模式相同的模式。 在将主表面并入磁盘驱动器的主单元之前，写入主伺服模式。 伺服模式写在主表面以外的表面上，删除与伺服模式相同的模式以外的主伺服模式的一部分。

公开(公告)号：US5903411A

公开(公告)日：1999-05-11

申请号：US599808

申请日：1996-02-12

申请人： Isamu Tomita ,  Tatsuro Sasamoto ,  Yoshihiro Nakao

发明人： Isamu Tomita ,  Tatsuro Sasamoto ,  Yoshihiro Nakao

IPC分类号： G11B21/10 ,  G11B5/596

CPC分类号： G11B21/106

摘要： A storage device includes a predetermined number of disks on which servo information is recorded, and a predetermined number of heads. The heads are positioned on target cylinders on the basis of the servo information read from the disks through the heads, so that information recording/reproducing can be performed. The disks include outer guard band areas located further out than data areas and inner guard band areas located further in than the data area. Analysis information concerning disk surfaces are recorded on the outer guard band areas. Each of the outer guard band areas is segmented into first and second outer guard band areas in a radial direction. The analysis information is recorded on the first outer guard band area. The servo information for an off-track correction is recorded on the second outer guard band area.

摘要翻译： 存储装置包括其上记录有伺服信息的预定数量的盘和预定数量的头。 基于通过磁头从磁盘读取的伺服信息，磁头位于目标气缸上，从而可以执行信息记录/再生。 这些磁盘包括比数据区域更远的外部保护带区域和位于数据区域之外的内部保护带区域。 有关磁盘表面的分析信息被记录在外保护带区域上。 每个外部保护带区域沿径向分割成第一和第二外部保护带区域。 分析信息被记录在第一外保护带区域上。 用于偏离磁道校正的伺服信息被记录在第二外保护带区域上。

公开(公告)号：US20090296263A1

公开(公告)日：2009-12-03

申请号：US12408682

申请日：2009-03-21

申请人： Takashi Kida ,  Susumu Yoshida ,  Isamu Tomita ,  Takeyori Hara

发明人： Takashi Kida ,  Susumu Yoshida ,  Isamu Tomita ,  Takeyori Hara

IPC分类号： G11B21/02

CPC分类号： G11B5/5547

摘要： An information storage apparatus includes a disc-shaped recording medium in which control marks aligned in a predetermined rule are recorded, a head contacting or approaching a recording medium surface to reproduce/record information of the recording medium and detecting the control marks, a head driving section holding the head to move the head in a direction of coming near or away to/from a recording medium rotation center, a driving force control section controlling a driving force for head driving section, a driving time control section controlling a driving time for the head driving section using an interval of the detection of the plural control marks as a time unit, and a driving force correcting section obtaining a difference between an ideal interval based on the rule of the control marks and an actual interval of the control marks to correct the control of the driving force based on the difference.

摘要翻译： 信息存储装置包括盘状记录介质，其中记录了以预定规则排列的控制标记，接触或接近记录介质表面的头以再现/记录记录介质的信息并检测控制标记，头驱动 保持头部沿着与记录介质旋转中心靠近或离开的方向移动头部;驱动力控制部分，控制头部驱动部分的驱动力;驱动时间控制部分，控制驱动时间 头部驱动部分，其使用多个控制标记的检测间隔作为时间单位，以及驱动力校正部，其基于控制标记的规则和控制标记的实际间隔获得理想间隔之间的差异，以校正 根据差异控制驱动力。

公开(公告)号：US07492543B2

公开(公告)日：2009-02-17

申请号：US11895464

申请日：2007-08-24

申请人： Nobuyuki Mitsunaga ,  Masahide Kanegae ,  Hiroyuki Tanaka ,  Isamu Tomita ,  Masao Kondo

发明人： Nobuyuki Mitsunaga ,  Masahide Kanegae ,  Hiroyuki Tanaka ,  Isamu Tomita ,  Masao Kondo

IPC分类号： G11B21/02

CPC分类号： G11B19/041 ,  G11B5/6064 ,  G11B5/607

摘要： Upon recording, a clearance control unit performs preheating by an added control value (BR) of a base heater control value B and an adjustment heater control value R and switches that to value B when it reaches a target sector to perform write. Upon reproduction, preheating is performed by the value (BR) and the value (BR) is maintained when it reaches a target sector to perform read. A correction processing unit detects contact between the head and a medium surface while increasing the value R from a predetermined initial value Ro, and sets a new calculated base heater control value B, and value Ro as the adjustment heater control value R. Write assist adjustment in which the measured adjustment heater control value R is adjusted to a heater control value that improves characteristic deterioration immediately after recording is started wherein preheating is switched to write heating is performed.

摘要翻译： 在记录时，间隙控制单元通过基本加热器控制值B的附加控制值（BR）和调节加热器控制值R执行预热，并且当其到达目标扇区以进行写入时切换到值B. 在再现时，通过值（BR）进行预热，并且当其到达目标扇区以进行读取时，维持值（BR）。 校正处理单元在从预定的初始值Ro增加值R的同时，检测头与介质面之间的接触，并将新的计算的基础加热器控制值B和值Ro设置为调节加热器控制值R.写入辅助调整 其中测量的调节加热器控制值R被调节到加热器控制值，该加热器控制值在开始其中预热被切换到写入加热的记录开始之后立即改善特性劣化。

公开(公告)号：US20050088775A1

公开(公告)日：2005-04-28

申请号：US10691336

申请日：2003-10-22

申请人： Kazunori Mori ,  Isamu Tomita ,  Tatsuhiko Kosugi ,  Yoshiyuki Kagami

发明人： Kazunori Mori ,  Isamu Tomita ,  Tatsuhiko Kosugi ,  Yoshiyuki Kagami

IPC分类号： G11B5/55 ,  G11B5/596

CPC分类号： G11B5/5547

摘要： A recording apparatus capable of securely reading out data for causing a head to follow along circular tracks set virtually. Therefore, on-track control along the virtual tracks is possible by the conversion data on the discoid record medium even when, for example, the printed circuit board in a recording apparatus has been replaced.

摘要翻译： 一种记录装置，其能够安全地读出用于使磁头沿着实际设置的圆形轨迹跟随的数据。 因此，即使例如记录装置中的印刷电路板已被更换，通过盘状记录介质上的转换数据也可以沿着虚拟轨道进行磁道轨迹控制。

公开(公告)号：US20050041322A1

公开(公告)日：2005-02-24

申请号：US10920746

申请日：2004-08-18

申请人： Yoshiyuki Kagami ,  Isamu Tomita ,  Shuichi Hashimoto

发明人： Yoshiyuki Kagami ,  Isamu Tomita ,  Shuichi Hashimoto

IPC分类号： G11B20/10 ,  G11B5/55 ,  G11B5/596 ,  G11B21/08 ,  G11B21/10 ,  G11B21/02

CPC分类号： G11B5/5547 ,  G11B5/59633 ,  G11B21/083

摘要： There is provided a head control method controlling move of a head on a discoidal recording medium including the steps of: partitioning the discoidal recording medium which has position information recorded thereon at radially equal spacing into a plurality of zones; and demodulating the position information using a coefficient set for each of the zones.

摘要翻译： 提供了一种控制盘在盘形记录介质上的头的移动的头控制方法，包括以下步骤：将其上记录有位置信息的盘状记录介质以径向相等的间隔划分成多个区; 以及使用针对每个区域设置的系数来解调位置信息。

公开(公告)号：US20060280485A1

公开(公告)日：2006-12-14

申请号：US11345470

申请日：2006-02-01

申请人： Ryuki Kubohara ,  Isamu Tomita

发明人： Ryuki Kubohara ,  Isamu Tomita

IPC分类号： H04N5/00

CPC分类号： G11B19/00 ,  G11B5/5526

摘要： To reduce power consumption of an information storage device, a control circuit for the information storage device stops the supply of a formatter clock or an ECC unit clock simultaneously with a seek operation. When a clock stop time has elapsed by the time obtained by subtracting at least a time required for restarting the formatter or the ECC unit from a seek time, the control circuit restarts the supply of the formatter clock or the ECC unit clock.

公开(公告)号：US07050250B2

公开(公告)日：2006-05-23

申请号：US10787064

申请日：2004-02-25

申请人： Tatsuhiko Kosugi ,  Isamu Tomita ,  Kazunori Mori ,  Yoshiyuki Kagami ,  Ryuki Kubohara

发明人： Tatsuhiko Kosugi ,  Isamu Tomita ,  Kazunori Mori ,  Yoshiyuki Kagami ,  Ryuki Kubohara

IPC分类号： G11B5/09

CPC分类号： G11B27/3027 ,  G11B2220/20

摘要： There are provided a storage apparatus and a computer-readable recording medium, on whose storage areas, servo frames are arranged at uniform intervals in a spoke-like pattern. Each of the servo frames has an index bit storing section storing, as an index bit, part of an index pattern, which is operable to identify a storage area. The apparatus and the recording medium have a storage area recognizing unit for recognizing the storage areas based on the index bits, which are obtained by an index bit obtaining unit. The index bits, stored one in each of the index bit storing sections of the servo frames, are adapted to form, when being sequentially arranged, an index bit string in which such an index pattern repeatedly appears.

摘要翻译： 提供了一种存储装置和计算机可读记录介质，其存储区域以伺服帧以均匀的间隔以轮辐状图案布置。 每个伺服帧具有索引位存储部分，其存储可用于识别存储区域的索引图案的一部分作为索引位。 设备和记录介质具有存储区域识别单元，用于基于由索引位获取单元获得的索引位来识别存储区域。 存储在伺服帧的每个索引位存储部分中的索引位适于在顺序排列时形成重复出现这种索引图案的索引位串。

公开(公告)号：US5926337A

公开(公告)日：1999-07-20

申请号：US824658

申请日：1997-03-24

申请人： Kenji Itou ,  Isamu Tomita ,  Toshiki Kimura

发明人： Kenji Itou ,  Isamu Tomita ,  Toshiki Kimura

IPC分类号： G11B21/10 ,  G11B5/55 ,  G11B5/596

CPC分类号： G11B5/59627 ,  G11B5/5534

摘要： Disclosed is an off-track correcting method for a disk apparatus for measuring an off-track correction value by use of servo data on a data surface. The data surface on a disk medium is recorded with servo data for an off-track measurement. The data head seals a cylinder position recorded with the off-track measurement servo data. It is determined whether or not this cylinder position is a sensitivity abnormal position of the cylinder. The data head reads a first item of servo data after offset-moving the data head by a predetermined quantity on inner and outer sides of the disk medium, corresponding to detecting that the data head is located in the sensitivity abnormal position. An off-track correction value in the cylinder position is calculated from the plural pieces of first servo data read finally in a plurality of reading positions. This, even when enhancing a track density, the precise off-track correction value can be thereby measured.

摘要翻译： 公开了一种用于通过使用数据表面上的伺服数据来测量偏离轨道校正值的盘装置的偏离轨道校正方法。 用磁带测量的伺服数据记录磁盘介质上的数据表面。 数据头密封记录有离轨测量伺服数据的气缸位置。 确定该气缸位置是否是气缸的灵敏度异常位置。 在检测到数据头位于灵敏度异常位置中时，数据头在磁盘介质的内侧和外侧偏移 - 移动数据头之后读取第一项伺服数据。 从多个读取位置中最终读取的多条第一伺服数据计算出气缸位置的偏离轨迹校正值。 这样，即使提高轨道密度，也可以测定精确的越野校正值。

公开(公告)号：US07719788B2

公开(公告)日：2010-05-18

申请号：US12360627

申请日：2009-01-27

申请人： Isamu Tomita

发明人： Isamu Tomita

IPC分类号： G11B5/596

CPC分类号： G11B5/59644 ,  G11B20/10009 ,  G11B20/10361 ,  G11B20/10388 ,  G11B20/1217 ,  G11B2020/10916 ,  G11B2020/1232 ,  G11B2020/1281 ,  G11B2020/183 ,  G11B2220/2516

摘要： A operation of storing a post code, which is read from each servo frame on a target track of a disk recording medium, in a memory if an on-track condition for determining that a head is controlled to be positioned on the target track is satisfied is executed. Next, a operation of using the post code, which is stored in the memory, for a correction of a demodulation position if the post code corresponding to each servo frame is stored in the memory and the on-track condition is satisfied in the correction of the demodulation position in each servo frame is executed.

摘要翻译： 如果满足用于确定头部被控制在目标轨道上的跟踪条件，则存储将从每个伺服帧读取的后代码存储在盘记录介质的目标轨道上的操作在存储器中的操作 被执行。 接下来，如果在对应于每个伺服帧的后期代码被存储在存储器中并且在轨道条件下，则存储在存储器中的用于校正解调位置的后代码的操作在校正 执行每个伺服帧中的解调位置。