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公开(公告)号：US07133237B2
公开(公告)日：2006-11-07
申请号：US10652477
申请日：2003-08-29
IPC分类号： G11B21/02
CPC分类号： G11B5/59666 , G11B5/59633
摘要： The read/write offset between the read head and write head is used to determine the head width ratio between the read head width and write head width. The servo information is written onto the magnetic disk in accordance with the APC value and track pitch that are derived from the determined head with ratio.
摘要翻译： 读头和写头之间的读/写偏移用于确定读头宽度和写头宽度之间的头宽比。 伺服信息根据从确定的磁头的比例导出的APC值和磁道间距写入磁盘。
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2.发明授权Data storage device, recording medium, servo writing method, and data reading/writing method 有权数据存储装置，记录介质，伺服写入方式和数据读/写方式公开(公告)号：US07054090B2
公开(公告)日：2006-05-30
申请号：US10601168
申请日：2003-06-19
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B21/02
摘要： Disclosed is a data storage device to provide servo patterns of a track pitch individually consistent with head characteristics (writing width, and reading width) in a recording medium of a hard disk device. The data storage device is provided with a disk having pitch information indicating a track pitch recorded in a predetermined area, and a head for scanning the disk to read the TPI ID and reading/writing data from/in the disk by being subjected to seeking control based on the TPI ID. The TPI ID is recorded as a part of a servo pattern in a TPI ID embedded area provided in an outer periphery of a data area of the disk.
摘要翻译： 公开了一种数据存储装置，用于提供与硬盘装置的记录介质中的头部特性（写入宽度和读取宽度）独立一致的轨道间距的伺服模式。 数据存储装置设置有具有指示记录在预定区域中的轨道间距的音高信息的盘，以及用于扫描盘以读取TPI ID并通过进行寻道控制从盘读取/写入数据的头 基于TPI ID。 在设置在盘的数据区的外围的TPI ID嵌入区域中记录TPI ID作为伺服模式的一部分。
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公开(公告)号：US06236527B1
公开(公告)日：2001-05-22
申请号：US09103758
申请日：1998-06-24
申请人： Hiroshi Uchiike , Kenji Ogasawara , Yoshiro Amano , Masahiro Shimizu , Shusuke Kurihara , Kazunari Tsuchimto , Nobuyuki Kitazaki , Shinji Ueno , Isao Yoneda , Yuji Yokoe , Fuminori Sai
发明人： Hiroshi Uchiike , Kenji Ogasawara , Yoshiro Amano , Masahiro Shimizu , Shusuke Kurihara , Kazunari Tsuchimto , Nobuyuki Kitazaki , Shinji Ueno , Isao Yoneda , Yuji Yokoe , Fuminori Sai
IPC分类号： G11B2102
摘要： A disk drive with means to prevent accidental landing of a head/slider on the disk surface is described. In one embodiment a shock sensor is provided to sense external shocks received by the mechanism. During loading (positioning) of the actuator bearing the head/slider over the disk, if a shock is sensed, loading is stopped and an immediate unloading is performed to return the actuator to the withdrawn position. In another embodiment the unload operation is performed when the rotational speed of the disk is changed. In another embodiment the unload operation is performed when the rotational speed of the disk drops below a threshold. A circuit and method for detecting when the rotational speed of the disk drops below a threshold is also provided. The unloading in the various embodiments may be performed using velocity control or without velocity control.
摘要翻译： 描述了具有防止头/滑块在盘表面上意外着落的装置的磁盘驱动器。 在一个实施例中，提供了一种震动传感器来感测由机构接收的外部冲击。 在将头/滑块轴承到盘上的执行器的装载（定位）期间，如果感测到冲击，则停止加载，并立即执行卸载以将执行器返回到撤回位置。 在另一个实施例中，当盘的旋转速度改变时执行卸载操作。 在另一个实施例中，当盘的转速下降到阈值以下时，执行卸载操作。 还提供了一种用于检测盘的转速何时下降到阈值以下的电路和方法。 各种实施例中的卸载可以使用速度控制或无速度控制来执行。
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4.发明授权Method for controlling servo information detection timing and rotational speed of disk, and disk drive 失效伺服信息检测定时和磁盘转速以及磁盘驱动器的控制方法公开(公告)号：US06515813B2
公开(公告)日：2003-02-04
申请号：US09764538
申请日：2001-01-17
申请人： Nobuyuki Kitazaki , Kenji Ogasawara , Yutaka Ozawa , Isao Yoneda
发明人： Nobuyuki Kitazaki , Kenji Ogasawara , Yutaka Ozawa , Isao Yoneda
IPC分类号： G11B509
CPC分类号： G11B5/59611 , G11B19/28 , G11B20/14
摘要： A method to enable servo information to be detected surely and stably even when a time interval between servo sectors is changed due to disk shifting. A time interval TS(i) is calculated according to an internal variable value, which is in proportion to a displacement &Dgr;r(i) of a servo area SF(i) in a radial direction of a subject disk (step S6). The displacement &Dgr;r(i) is calculated from already detected servo information[, thereby]. Thereby, a time interval for detecting servo information is adjusted according to the above described time interval TS(i) (steps S7 and S4). The time interval TS(i) is the time interval between passing of a servo sector in the servo area SF(i) under the head H and passing of a servo sector in the servo area SF(i+1) under the head H.
摘要翻译： 即使伺服扇区之间的时间间隔由于盘移动而改变，也能够确保和稳定地检测伺服信息。 时间间隔TS（i）根据内部变量值计算，该内部变量值与目标盘的径向方向上的伺服区域SF（i）的位移量DELTAr（i）成比例（步骤S6）。 从已经检测的伺服信息[由此]计算位移ΔTATA（i）。 由此，根据上述时间间隔TS（i）来调整用于检测伺服信息的时间间隔（步骤S7和S4）。 时间间隔TS（i）是在头部H下的伺服区域SF（i）中的伺服扇区通过之间的时间间隔，并且在头部H下的伺服区域SF（i + 1）中伺服扇区通过之间的时间间隔。
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5.发明授权公开(公告)号：US06891692B2
公开(公告)日：2005-05-10
申请号：US10068602
申请日：2002-02-05
CPC分类号： G11B5/5547
摘要： A position control system for a magnetic head improves servo tracking characteristics in a low frequency range without impairing the stability of seek operations. The position control system is equipped with two integrators: a first integrator 43 and second integrator 45. The gain K3′ of the second integrator 45 is set larger than the gain K3 of the first integrator 43. The first integrator 43 plays the role of offsetting the bias force acting on the magnetic head while the second integrator 45 plays the role of improving the servo tracking characteristics in the low frequency range.
摘要翻译： 用于磁头的位置控制系统可以在低频范围内提高伺服跟踪特性，而不会影响寻道操作的稳定性。 位置控制系统配备有两个积分器：第一积分器43和第二积分器45.第二积分器45的增益K 3'被设置为大于第一积分器43的增益K 3。第一积分器43起作用 抵消作用在磁头上的偏压力，而第二积分器45起到提高低频范围内的伺服跟踪特性的作用。
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6.发明授权公开(公告)号：US06879459B2
公开(公告)日：2005-04-12
申请号：US10652760
申请日：2003-08-29
CPC分类号： G11B5/59622
摘要： A mechanism to allow accurate control of the position of a magnetic head even if the state of the magnetic head has changed due to instability.
摘要翻译： 即使磁头的状态由于不稳定性而改变，也允许精确地控制磁头的位置的机构。
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7.发明授权公开(公告)号：US07170705B2
公开(公告)日：2007-01-30
申请号：US10250755
申请日：2001-12-24
CPC分类号： G11B19/04 , G11B21/106
摘要： A process, apparatus, and system are disclosed for inhibiting erroneous control signals due to disruptive electromagnetic signals. In one embodiment, the invention prevents erroneous information writing in a recording device under the effect of background electromagnetic waves. A conductor pattern is formed on a printed wiring board on which wiring constituting a control circuit of a hard disk drive is formed. Background electromagnetic waves are detected by an electromagnetic wave detection circuit. In the case where an electromagnetic wave signal detected by the electromagnetic wave detection circuit exceeds a predetermined power, voltage, or current threshold, a write gate signal is turned off to inhibit a potential write operation.
摘要翻译： 公开了一种用于抑制由于破坏性电磁信号引起的错误控制信号的过程，装置和系统。 在一个实施例中，本发明防止在背景电磁波的作用下在记录装置中的错误信息写入。 在形成有构成硬盘驱动器的控制电路的布线的印刷布线板上形成导体图案。 电磁波检测电路检测背景电磁波。 在由电磁波检测电路检测到的电磁波信号超过预定功率，电压或电流阈值的情况下，写入门信号被关闭以禁止写入动作。
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8.发明授权Increased and randomized output sampling to reduce positioning noise in a data storage system 有权增加和随机输出采样，以减少数据存储系统中的定位噪声公开(公告)号：US06344943B1
公开(公告)日：2002-02-05
申请号：US09280384
申请日：1999-03-29
IPC分类号： G11B5596
CPC分类号： G11B5/59605 , G11B5/59627 , G11B5/5965
摘要： A method and system for reducing positioning noise in a data storage system are provided. An access device is positioned over a data storage medium using a stream of bursts stored on the medium. The bursts are sensed at a frequency determined by the rate at which the medium is moved relative to a sensing device. Output positioning values are provided to position the access device at a frequency higher than the frequency at which the positioning bursts are sensed, and/or at random times. The random times may be calculated as random advances or delays from time points occurring at a fixed frequency.
摘要翻译： 提供了一种用于降低数据存储系统中定位噪声的方法和系统。 访问设备使用存储在介质上的突发流来定位在数据存储介质上。 以由介质相对于感测装置移动的速率确定的频率感测脉冲串。 提供输出定位值以将访问设备定位在高于感测定位脉冲串的频率的频率处和/或随机时间。 随机时间可以被计算为在固定频率发生的时间点的随机前进或延迟。
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公开(公告)号：US5687042A
公开(公告)日：1997-11-11
申请号：US660629
申请日：1996-06-06
CPC分类号： G11B5/6005 , G11B21/16 , G11B21/21 , G11B21/24 , G11B5/102 , Y10S977/70 , Y10S977/888 , Y10S977/932 , Y10T29/4903 , Y10T29/49041
摘要： For a slider having convex curvature along its length, or "crown", a method for reducing fly height variation due to crown by shifting the peak of the crown toward the leading end, and the resultant slider structure. In a preferred method, peak shifting is accomplished in a slider with symmetrical crown by affixing a suspension to the bonding surface of the slider near the leading end. The bonding process creates a displacement force upon the slider to effect the shift. An alternative approach reshapes a row of sliders prior to rail shaping, e.g., by sand or bead blasting.
摘要翻译： 对于具有沿着其长度具有凸曲率或“冠”的滑块，通过将冠部的顶端朝向前端移位而减小由于冠部引起的飞行高度变化的方法以及所得到的滑块结构。 在优选的方法中，通过将悬架附接到靠近前端的滑块的接合表面，在具有对称冠部的滑块中实现峰值偏移。 接合过程在滑块上产生位移力以实现移位。 替代方法在轨道成形之前，例如通过沙子或珠粒喷砂，重新形成一排滑块。
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公开(公告)号：US07675700B2
公开(公告)日：2010-03-09
申请号：US12079497
申请日：2008-03-26
CPC分类号： G11B5/59688 , G11B5/59633
摘要： Embodiments of the present invention provide a magnetic disk device and a method for production thereof, the magnetic disk device being characterized in that the magnetic disk therein permits a plurality of tracks thereon to record correction data when necessary without decreasing its storage capacity. According to one embodiment, the magnetic disk device is characterized in that the magnetic disk has the first tracks and the second tracks formed thereon, the first tracks having servo data regions arranged cyclically, with a portion of a region between them being the correction data region and the remaining regions being the user data region, and the second tracks having the servo data regions arranged cyclically, with the region between them being the user data regions, and the multiprocessing unit (MPU) switches the servo extraction timing of the position information sampler depending on whether the track for servo reproduction by the magnetic head is the first track or the second track.
摘要翻译： 本发明的实施例提供一种磁盘装置及其制造方法，其特征在于，其中的磁盘允许其上的多个轨道在必要时记录校正数据而不降低其存储容量。 根据一个实施例，磁盘装置的特征在于，磁盘具有形成在其上的第一轨道和第二轨道，第一轨道具有循环布置的伺服数据区域，其间的区域的一部分是校正数据区域 其余区域为用户数据区域，第二轨道具有循环布置的伺服数据区域，其间的区域是用户数据区域，多处理单元（MPU）切换位置信息采样器的伺服提取定时 取决于由磁头进行伺服再现的轨道是第一轨道还是第二轨道。
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