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1. 发明授权

US5754354A Magnetic disk drive unit with complex magnetic head of variable reading width 失效
标题翻译：具有可变读宽度的复杂磁头的磁盘驱动单元
公开(公告)号：US5754354A
公开(公告)日：1998-05-19
申请号：US345583
申请日：1994-11-28
申请人： Isamu Tomita , Tsuyoshi Furukawa
发明人： Isamu Tomita , Tsuyoshi Furukawa
IPC分类号： G11B5/39 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/48 , G11B5/55 , G11B5/596 , G11B15/12
CPC分类号： G11B5/012 , G11B5/5526 , G11B5/59683 , G11B2005/0016 , G11B5/4886 , G11B5/59627 , G11B5/59688
摘要： A magnetic disk drive unit includes a first read amplifier connected to an inductive head, a second read amplifier connected to a magneto-resistive head, a selective output unit for selecting either an output of the first read amplifier or an output of the second read amplifier and supplying a selected output to a demodulator, and a control unit for supplying a switching control signal. When reading servo information written onto a data surface of a magnetic recording medium, the control unit controls the switching control signal and thus causes the selective output unit to select an output of the first read amplifier associated with the inductive head. By the constitution, servo information can be detected in a wide range using a relatively simple data-surface servo pattern. This realizes high-precision off-tracking compensation.
摘要翻译：磁盘驱动单元包括连接到感应头的第一读取放大器，连接到磁阻头的第二读取放大器，用于选择第一读取放大器的输出或第二读取放大器的输出的选择性输出单元以及将选择的输出提供给解调器，以及用于提供开关控制信号的控制单元。当读取写入到磁记录介质的数据表面上的伺服信息时，控制单元控制切换控制信号，从而使选择输出单元选择与感应头相关的第一读出放大器的输出。通过该结构，可以使用相对简单的数据表面伺服模式在宽范围内检测伺服信息。这实现了高精度偏移补偿。

2. 发明申请

US20090296263A1 INFORMATION STORAGE APPARATUS 审中-公开
标题翻译：信息存储设备
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。

3. 发明授权

US07492543B2 Control device, control method, and storage apparatus for controlling read head and write head clearance 失效
标题翻译：用于控制读头和写头间隙的控制装置，控制方法和存储装置
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。

4. 发明申请

US20050088775A1 Recording apparatus having discoid record mediums 失效
标题翻译：具有盘状记录介质的记录装置
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。

5. 发明申请

US20050041322A1 Head control method and recording apparatus 有权
标题翻译：头控制方法和记录装置
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。

6. 发明授权

US5903411A Method for reliably positioning a head in a disk drive to a guard band area 失效
标题翻译：用于将磁头驱动器中的磁头可靠地定位到保护带区域的方法
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。

7. 发明申请

US20060280485A1 Control circuit for information storage device 有权
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.

8. 发明授权

US07050250B2 Storage apparatus and storage medium 有权
标题翻译：存储设备和存储介质
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。

9. 发明授权

US5926337A Off-track correcting method of disk apparatus and a disk apparatus using the same 失效
标题翻译：磁盘装置的非磁道校正方法和使用其的磁盘装置
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。

10. 发明授权

US07719788B2 Servo information correcting method 有权
标题翻译：伺服信息校正方法
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。

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