公开(公告)号：US07020050B2

公开(公告)日：2006-03-28

申请号：US11053229

申请日：2005-02-08

申请人： Peter Mahr

发明人： Peter Mahr

IPC分类号： G11B21/08

CPC分类号： G11B7/08529 ,  G11B7/08588 ,  G11B21/085

摘要： A data player or a method in which a reading and/or writing head is positioned according to anyone of 3 methods or combinations thereof: Calculating a desirable speed curve to position the head from a first to a second position and adjust the speed of the head's movement to the desirable speed, calculating and outputting an amount of energy to a driving mechanism to move the head a determined number of steps, increasing the power applied to a driving mechanism until the head is moved for one step. The positioning may additionally be used to perform coarse positioning while the head is positioned on a track of a data medium using a fine positioning mechanism.

摘要翻译： 一种数据播放器或其中根据3种方法或其组合中的任何一种来定位读取和/或书写头的方法：计算期望的速度曲线以将头部从第一位置到第二位置并且调整头部的速度 运动到期望的速度，计算并输出一定量的能量到驱动机构以使头移动确定的步数，增加施加到驱动机构的功率，直到头移动一步。 当头部使用精细定位机构定位在数据介质的轨道上时，定位可另外用于执行粗略定位。

公开(公告)号：US06985327B2

公开(公告)日：2006-01-10

申请号：US09958782

申请日：2001-10-12

申请人： Gabor Szita

发明人： Gabor Szita

IPC分类号： G11B5/596

CPC分类号： G11B21/085 ,  G11B5/5552

摘要： A compensation element (317) in a feedforward line in a dual stage control system for a data storage system compensates for the undesired transient motion of a first positioning element (i.e., a coarse actuator). The compensation element is a transfer function that is applied from the first positioning element's control signal (Uv) to a second positioning elements's (306) (i.e., microactuator's) input. The transfer function is defined as formula (I) where ^Vnom (z) is a transfer function model of the nominial portion of the first positioning element, ^Vres (z) is a transfer function model of the resonance portion of the first positioning element, and ^M(z) is a transfer function model of the dynamics of the second positioning element. This feedforward transfer function effectively cancels the resonances of the first positioning element without requiring the inversion of the resonance transfer function.

摘要翻译： 用于数据存储系统的双级控制系统中的前馈线中的补偿元件（317）补偿第一定位元件（即，粗略致动器）的不期望的瞬态运动。 补偿元件是从第一定位元件的控制信号（U> V>）施加到第二定位元件（306）（即微致动器）的输入的传递函数。 传递函数被定义为公式（I），其中，？V？nom（z）是第一定位元素的标称部分的传递函数模型， z）是第一定位元件的共振部分的传递函数模型，并且^ M（z）是第二定位元件的动力学的传递函数模型。 该前馈传递函数有效地消除了第一定位元件的谐振，而不需要谐振传递函数的反转。

公开(公告)号：US20030076615A1

公开(公告)日：2003-04-24

申请号：US10055110

申请日：2002-01-22

申请人： Seagate Technology LLC

发明人： Mingzhong Ding ,  KeXiu Liu ,  KianKeong Ooi

IPC分类号： G11B005/596

CPC分类号： G11B5/5556 ,  G11B5/59622 ,  G11B7/0941 ,  G11B21/085 ,  G11B21/106 ,  G11B33/08

摘要： A filter for attenuating a resonance mode without substantial phase margin loss. The filter comprises a transfer function having an additional pole, such that the phase of the input signal is advanced. The phase-advanced filter substantially attenuates all frequencies above a selected center frequency while avoiding substantial phase margin loss.

摘要翻译： 用于衰减谐振模式而没有实质相位裕度损失的滤波器。 滤波器包括具有附加极点的传递函数，使得输入信号的相位提前。 相位超前滤波器基本上衰减所选择的中心频率以上的所有频率，同时避免实质的相位裕度损失。

公开(公告)号：US06442109B1

公开(公告)日：2002-08-27

申请号：US08829974

申请日：1997-04-02

申请人： Michihiko Iida

发明人： Michihiko Iida

IPC分类号： G11B700

CPC分类号： G05B19/19 ,  G11B5/5547 ,  G11B7/08529 ,  G11B11/10563 ,  G11B21/085

摘要： Even if an assumed value of a track pitch and an actual value thereof are different from each other, an optical pickup (2) can be positioned at a target position at high speed, which can realize higher-speed access. A drive-means control apparatus according to the present invention includes a target position calculating means (58) for calculating a target track number based on a head logic address of a track to be accessed, a current position calculating means (60) for calculating a current track number based on a current address, a number-of-tracks calculating means (61) for, based on the target track number and the current track number, calculating the number of tracks by which the optical pickup (2) is to be moved, a step number calculating means (62) for calculating a step number based on the number of tracks, the track pitch (assumed value) and so on, and an assumed value correcting means (65) for correcting the track pitch (assumed value) based on the calculated step number and the number of remaining tracks.

摘要翻译： 即使轨道间距的假定值和其实际值彼此不同，也可以将光学拾取器（2）高速定位在目标位置，从而能够实现高速存取。 根据本发明的驱动装置控制装置包括：目标位置计算装置，用于基于要被访问的磁道的磁头逻辑地址计算目标磁道号;当前位置计算装置， 基于当前地址的当前轨道号，轨道数计算装置（61），用于基于目标轨道号和当前轨道号，计算光学拾取器（2）将被配置的轨道数 用于基于轨道数，轨道间距（假定值）等来计算步数的步数计算装置和用于校正轨道间距（假定值）的假定值校正装置（65） ）基于所计算的步数和剩余轨道的数量。

公开(公告)号：US20020039329A1

公开(公告)日：2002-04-04

申请号：US09956017

申请日：2001-09-20

发明人： Minoru Yonezawa

IPC分类号： G11B007/085

CPC分类号： G11B7/08517 ,  G11B7/08529 ,  G11B7/08541 ,  G11B21/085

摘要： A disk apparatus comprising a precise positioning mechanism for finely displacing the information recording/reproducing mechanism in a radial direction of the disk, a coarse positioning mechanism for positionally displacing the information recording/reproducing mechanism in an information recording region in the radial direction of the disk, a coarse positioning mechanism driving circuit for controlling the drive of the coarse positioning mechanism upon receiving the drive signal in accordance with the drive signal generated by the reference speed generator, and a precise positioning mechanism driving circuit for controlling the drive of the precise positioning mechanism in accordance with a difference between the moving speed detected by the speed detector and the reference speed generated by the reference speed generator.

摘要翻译： 一种盘装置，包括用于在盘的径向方向上精细位移信息记录/再现机构的精确定位机构，用于将信息记录/再现机构位于盘的径向信息记录区域中的位置移位的粗定位机构 粗定位机构驱动电路，用于根据由基准速度发生器产生的驱动信号接收驱动信号来控制粗定位机构的驱动;以及精确定位机构驱动电路，用于控制精确定位机构的驱动 根据由速度检测器检测到的移动速度与基准速度发生器产生的基准速度之差。

公开(公告)号：US20010019521A1

公开(公告)日：2001-09-06

申请号：US09850282

申请日：2001-05-07

发明人： Shigenori Yanagi

IPC分类号： G11B007/00

CPC分类号： G11B7/08517 ,  G11B7/08529 ,  G11B7/08541 ,  G11B7/0901 ,  G11B21/085

摘要： Disclosed is a seek control method in an optical storage device, of seek-moving a light beam of an optical head from a certain track on an optical storage medium to a desired track. This seek control method comprises a step of calculating a target position, a step of detecting a present position from a track error signal indicating a relative position between the light beam and the track, a step of calculating such a feedback control quantity as to zeroize an error between the target position and the present position and a step of controlling a moving mechanism for moving the light beam in accordance with the feedback control quantity. The present position detecting step includes a first present position detecting step of detecting the present position from a signal into which the track error signal is D/A-converted when a velocity of the light beam is low and a second present position detecting step of detecting the present position from a count value obtained by counting track zero-cross signals acquired by slicing the track error signal at a zero level when the velocity of the light beam is high.

摘要翻译： 公开了一种光存储装置中的寻道控制方法，用于将光头的光束从光存储介质上的某个轨道搜索到期望的轨道。 该搜索控制方法包括计算目标位置的步骤，从表示光束与轨道之间的相对位置的轨道误差信号中检测当前位置的步骤，计算这种反馈控制量以使零点变化的步骤 目标位置与当前位置之间的误差以及根据反馈控制量控制用于移动光束的移动机构的步骤。 当前位置检测步骤包括：第一当前位置检测步骤，当光束的速度低时，从轨道误差信号进行D / A变换的信号中检测当前位置;以及第二当前位置检测步骤， 通过计算当光束的速度高时通过将轨道误差信号切割成零电平获得的轨道零交叉信号而获得的计数值的当前位置。

公开(公告)号：US06181506B2

公开(公告)日：2001-01-30

申请号：US08504251

申请日：1995-07-19

申请人： Yukio Shimura ,  Shinichi Yamashita ,  Nobutoshi Takayama

发明人： Yukio Shimura ,  Shinichi Yamashita ,  Nobutoshi Takayama

IPC分类号： G11B5584

CPC分类号： G11B15/4676 ,  G11B5/588 ,  G11B21/085 ,  G11B21/106

摘要： A novel tracking control device and method is disclosed. In the tracking control device and method, digital information is reproduced from a recording medium by a reproducing head, an error contained in the reproduced digital information is detected, and the relative position between the recording medium and the reproducing head is controlled by using the detection result. In addition, an arrangement capable of realizing a high tracking capability with respect to the non-linearity of a track is also disclosed. The arrangement forms a plurality of tracking error signals indicative of positional deviations between the reproducing head and a plurality of divided areas into which each track formed on the recording medium is divided, and selectively uses the plurality of tracking error signals.

摘要翻译： 公开了一种新颖的跟踪控制装置和方法。 在跟踪控制装置和方法中，通过再现头从记录介质再现数字信息，检测再现的数字信息中包含的错误，并且通过使用检测来控制记录介质和再现头之间的相对位置 结果。 此外，还公开了能够实现关于轨道的非线性的高跟踪能力的装置。 该排列形成多个跟踪误差信号，该信号指示再现头与被分割在记录介质上的每个轨道划分成多个划分区域的位置偏差，并选择性地使用多个跟踪误差信号。

公开(公告)号：US6128154A

公开(公告)日：2000-10-03

申请号：US271170

申请日：1999-03-18

申请人： Ho-Yul Bang

发明人： Ho-Yul Bang

IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B20/12 ,  G11B21/08 ,  G11B27/10 ,  G11B27/30

CPC分类号： G11B27/3027 ,  G11B20/1252 ,  G11B21/085 ,  G11B27/105 ,  G11B5/5526 ,  G11B5/5547 ,  G11B5/59655 ,  G11B2020/1282 ,  G11B2220/20

摘要： A servo control method of a hard disk drive includes: providing a disk having a plurality of first servo track patterns, including a gray code field, for providing track information for each track, and a plurality of second servo track patterns which fail to include the gray code field of the first servo track patterns, both the first and second track patterns being positioned on the same track; providing a head for reading data from a given track of the disk or writing data on the given track; checking, in response to a data read/write command received from a host computer, whether or not the head must move to a target track; if it is determined that the head must move to the target track, repeatedly switching from one head to a following head, in a sequential manner, to perform a track seek; after performing the track seek, checking whether or not a velocity of the head is decreasing; and, if it is determined that the velocity of the head is decreasing, fixing the head on the disk including the target track to perform track following.

摘要翻译： 硬盘驱动器的伺服控制方法包括：提供具有多个第一伺服磁道图案的磁盘，包括用于提供每个磁道的磁道信息的灰度字段，以及多个第二伺服磁道图案，其不包括 第一和第二轨道图案位于相同的轨道上; 提供用于从给定磁道的轨道读取数据或在给定轨道上写入数据的头部; 根据从主计算机接收的数据读/写命令，检查头是否必须移动到目标轨道; 如果确定头部必须移动到目标轨道，则以顺序的方式重复地从一个头部切换到后续头部以执行轨迹搜索; 在执行轨迹搜索之后，检查头部的速度是否正在减小; 并且如果确定头部的速度正在减小，则将头固定在包括目标轨道的盘上以执行跟踪。

公开(公告)号：US6101064A

公开(公告)日：2000-08-08

申请号：US21513

申请日：1998-02-10

申请人： Stanley H. Shepherd

发明人： Stanley H. Shepherd

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

CPC分类号： G11B5/5534 ,  G11B21/085 ,  G11B21/106 ,  G11B5/59627 ,  G11B5/59644 ,  G11B5/59655 ,  G11B5/59688 ,  G11B5/5965

摘要： Methods and apparatus for ascertaining a position of a read/write head relative to a reference position on a rotatable disk in a computer disk drive are disclosed. In one aspect of the present invention, a method for determining the position of a read/write head relative to a reference position on a rotatable disk in a computer disk drive includes reading amplitudes of a set of servo bursts embedded in tracks of the disk and classifying the servo bursts into a converging servo burst set and a detection servo burst set around the reference position. The method also includes forming a position error signal by augmenting a detection servo burst signal with a converging servo burst signal as well as a normalization factor. The converging servo burst signal is formed from amplitudes of the converging servo burst set at the position of the read/write head. The detection servo burst signal is formed from amplitudes of the detection servo burst set at the position of the read/write head. The position error signal represents an offset from the reference position.

摘要翻译： 公开了用于确定读/写头相对于计算机磁盘驱动器中的可旋转盘上的参考位置的位置的方法和装置。 在本发明的一个方面，一种用于确定读/写磁头相对于计算机磁盘驱动器中的可旋转磁盘上的参考位置的位置的方法包括：读取嵌入在磁盘轨道中的一组伺服脉冲串的振幅;以及 将伺服脉冲串分类为聚合伺服脉冲组合和围绕参考位置设置的检测伺服脉冲串。 该方法还包括通过利用会聚伺服脉冲串信号增强检测伺服脉冲串信号以及归一化因子来形成位置误差信号。 会聚伺服脉冲串信号由设置在读/写头位置的会聚伺服脉冲串的幅度形成。 检测伺服脉冲串信号由在读/写头位置设置的检测伺服脉冲串的幅度形成。 位置误差信号表示与参考位置的偏移。

公开(公告)号：US6052251A

公开(公告)日：2000-04-18

申请号：US836292

申请日：1997-05-12

申请人： Khosrow Mohajerani ,  Joseph M. Sampietro ,  Anoush M. Fard ,  Jeffrey G. Barina ,  Muhammad A. Hawwa ,  LeRoy A. Volz ,  Tien Q. Le ,  Daniel R. Vigil

发明人： Khosrow Mohajerani ,  Joseph M. Sampietro ,  Anoush M. Fard ,  Jeffrey G. Barina ,  Muhammad A. Hawwa ,  LeRoy A. Volz ,  Tien Q. Le ,  Daniel R. Vigil

IPC分类号： G11B5/54 ,  G11B5/55 ,  G11B21/08 ,  G11B21/24

CPC分类号： G11B5/54 ,  G11B21/085 ,  G11B21/24 ,  G11B5/4873 ,  G11B5/5552 ,  Y10T29/49025

摘要： A system for positioning a transducing head in a disc drive device over a selected track of a rotatable disc includes an actuator arm which is rotatable about an axis, a head suspension mechanism connected to the actuator arm, and a slider carrying a transducing head and supported by the head suspension mechanism. A low resolution motor moves the actuator arm about the axis to effect coarse movement of the head between tracks of the disc. A piezoelectric element is embedded in the actuator arm to distort the arm to effect fine positioning of the head. Control circuitry distributes electrical signals to the low resolution motor and the piezoelectric element to selectively control movement thereof. The piezoelectric element is embedded in the actuator arm by removing a predetermined amount of material from the actuator arm and bonding the piezoelectric element in the resulting space it the actuator arm.

摘要翻译： PCT No.PCT / US97 / 07892 Sec。 371日期：1998年3月19日 102（e）1998年3月19日PCT PCT 1997年5月12日PCT公布。 公开号WO97 / 32044 日期1997年9月4日用于将转换头定位在可旋转盘的选定轨道上的盘驱动装置中的系统包括可围绕轴线旋转的致动器臂，连接到致动器臂的头悬挂机构和承载 转头并由头悬挂机构支撑。 低分辨率马达使致动器臂围绕轴线移动，以使头部在盘的轨道之间进行粗略移动。 压电元件嵌入在致动器臂中以扭曲臂以实现头部的精细定位。 控制电路将电信号分配到低分辨率电动机和压电元件以选择性地控制其运动。 通过从致动器臂移除预定量的材料并将压电元件接合在致动臂的所得空间中，将压电元件嵌入致动器臂中。