公开(公告)号：US06765744B2

公开(公告)日：2004-07-20

申请号：US10028636

申请日：2001-12-19

申请人： Kevin Arthur Gomez ,  Qiang Bi ,  Aik Chuan Lim ,  Jimmy Tze Ming Pang

发明人： Kevin Arthur Gomez ,  Qiang Bi ,  Aik Chuan Lim ,  Jimmy Tze Ming Pang

IPC分类号： G11B2102

CPC分类号： G11B5/59611

摘要： A method of, apparatus for, and means for controlling pitch of a servowritten track on a disc in a disc drive are disclosed. The disc drive has a head for traversing over a surface of the disc. The head has a read element and a write element separated by a head element offset &Dgr;. A servowriting controller operably connected to the disc drive creates a track k by writing servo information on the disc. The servowriting controller then calculates the head element offset &Dgr; at the track k, [&Dgr;CALC(k)] and determines a skew angle &thgr; at the track k, [&thgr;(k)]. The servowriting controller adjusts a track pitch correction factor based on the &Dgr;CALC(K) and the &thgr;(k) such that the track pitch correction factor is utilized to servowrite a next track.

摘要翻译： 公开了一种用于控制盘驱动器中的盘上的伺服轨道的俯仰的方法，装置和装置。 磁盘驱动器具有用于在盘的表面上移动的磁头。 头部具有读取元素和由头元素偏移量Delta分隔的写入元素。 可操作地连接到盘驱动器的伺服驱动控制器通过在盘上写入伺服信息来创建轨迹k。 伺服驱动控制器然后计算磁道k处的磁头元素偏移量Delta（ΔCALC（k）]，并确定轨道k处的偏斜角θ，θ（k）]。 伺服驱动控制器基于DeltaCALC（K）和θ（k）来调整轨道间距校正因子，使得轨道间距校正因子用于对下一个轨道进行编译。

公开(公告)号：US06317285B1

公开(公告)日：2001-11-13

申请号：US09697002

申请日：2000-10-26

申请人： Qiang Bi ,  Kevin Arthur Gomez ,  Jimmy Tze Ming Pang ,  Stephen Kow Chiew Kuan ,  MengEng Lye ,  BengSee Lim

发明人： Qiang Bi ,  Kevin Arthur Gomez ,  Jimmy Tze Ming Pang ,  Stephen Kow Chiew Kuan ,  MengEng Lye ,  BengSee Lim

IPC分类号： G11B5455

CPC分类号： G11B5/59683 ,  G11B5/012 ,  G11B5/5534 ,  G11B5/59644 ,  G11B7/0945

摘要： A method of calibrating magnetoresistive (MR) head geometry for a product head in a selfservo writing disc drive includes the steps of writing a first burst at an inner diameter of a disc surface using the write head of the product head. Next, the first burst is read using the MR read head of the product head, and a first read amplitude of the first burst is determined. From the first read amplitude of the first burst, it is determined which one of a multiple different sets of subsequent inner diameter steps to perform. Then, the one of the multiple different sets of subsequent inner diameter steps is performed to determine a read head width, a write head width, and a read-write offset between the read head and the write head.

摘要翻译： 在自写入盘驱动器中用于校准磁头（MR）头几何形状的方法包括以下步骤：使用产品头的写入头在盘表面的内径处写入第一脉冲串。 接下来，使用产品头的MR读取头读取第一个突发，并确定第一个突发的第一个读取幅度。 从第一脉冲串的第一读取幅度开始，确定执行多个不同组的后续内径步骤中的哪一个。 然后，执行多个不同组的后续内径步骤中的一个，以确定读头和写头之间的读头宽度，写头宽度和读 - 写偏移。

公开(公告)号：US06741914B1

公开(公告)日：2004-05-25

申请号：US09475720

申请日：1999-12-30

申请人： Jimmy Tze Ming Pang

发明人： Jimmy Tze Ming Pang

IPC分类号： G05B1300

CPC分类号： G11B5/59622 ,  G11B5/5582 ,  G11B21/025

摘要： A method for optimizing the attenuation of mechanical resonances of actuator driving energy of a disc drive is presented. The method generally involves determining a resonant frequency range of the disc drive, comparing the resonant frequency range to a filter coverage limit, failing the disc drive if the resonant frequency range exceeds the filter coverage limit, and storing notch filter constants in servo flash memory of a servo control processor if the filter coverage limit is not exceeded by the range of resonant frequencies. The notch filter constants configure the notch filter to attenuate the frequencies of the driving energy produced by the servo control processor that are within the resonant frequency range. The notch filter is implemented by the servo control processor each time the disc drive is used. Also presented is a disc drive and a program that are capable of implementing the above-described method.

摘要翻译： 提出了一种用于优化盘驱动器的致动器驱动能量的机械共振的衰减的方法。 该方法通常涉及确定磁盘驱动器的谐振频率范围，将谐振频率范围与滤波器覆盖限制进行比较，如果谐振频率范围超过滤波器覆盖限度，则将磁盘驱动器失效，并将陷波滤波器常数存储在伺服闪存中 如果滤波器覆盖限制不超过谐振频率的范围，则伺服控制处理器。 陷波滤波器常数配置陷波滤波器以衰减由谐振频率范围内的伺服控制处理器产生的驱动能量的频率。 陷波滤波器由伺服控制处理器在每次使用磁盘驱动器时实现。 还提出了能够实现上述方法的盘驱动器和程序。