公开(公告)号：US06628471B1

公开(公告)日：2003-09-30

申请号：US09798801

申请日：2001-03-02

申请人： ShuangQuan Min ,  Ricky WeiWatt Yeo ,  KianKeong Ooi ,  Xiong Liu ,  BengWee Quak ,  ChiapHeok Ang

发明人： ShuangQuan Min ,  Ricky WeiWatt Yeo ,  KianKeong Ooi ,  Xiong Liu ,  BengWee Quak ,  ChiapHeok Ang

IPC分类号： G11B2102

CPC分类号： G11B5/59627 ,  G11B5/59633

摘要： The magnitude and frequency of runout due to vibration of the cage of the spindle motor is detected. A plurality of servo patterns are written to a reference track having a clock pattern on the disc, and the plurality of servo patterns are then read over a plurality of revolutions of the disc using a clock head. The magnitude of position error of the clock head relative to the reference track is identified for each of the read servo patterns. The magnitude and frequency of runout due to cage vibration is identified from the position errors. Servo patterns are written to user tracks on the disc by identifying periods of low magnitude runout due to cage vibration, and writing the servo patterns to the user track during those periods of low magnitude runout.

摘要翻译： 检测到由主轴电机的保持架振动引起的跳动的幅度和频率。 将多个伺服模式写入到具有盘上的时钟图案的参考轨道，然后使用时钟头在盘的多个转圈上读取多个伺服模式。 为每个读取的伺服模式识别时钟磁头相对于参考磁道的位置误差的大小。 从位置误差中确定由于保持架振动引起的跳动的幅度和频率。 通过识别由于笼振动引起的低幅度跳动的周期，并且在低幅度跳动期间将伺服模式写入用户轨迹，将伺服模式写入盘上的用户轨道。

公开(公告)号：US06721120B2

公开(公告)日：2004-04-13

申请号：US09844159

申请日：2001-04-27

申请人： Shuang Quan Min ,  Kian Keong Ooi ,  Ricky WeiWatt Yeo ,  Chiap Heok Ang ,  Ming Zhong Ding ,  Beng Wee Quak

发明人： Shuang Quan Min ,  Kian Keong Ooi ,  Ricky WeiWatt Yeo ,  Chiap Heok Ang ,  Ming Zhong Ding ,  Beng Wee Quak

IPC分类号： G11B2102

CPC分类号： G11B5/59633

摘要： A method for writing servo information to a disc rotatably mounted to a spindle motor. A measured cage frequency is obtained from a written reference track, from which an actual cage frequency is predicted. The predicted cage frequency is then used to derive compensated position commands. During a servo write interval, the compensated position commands are used to control the head such that the head follows the disc movements caused by the cage frequency.

摘要翻译： 一种将伺服信息写入可旋转地安装在主轴电动机上的盘的方法。 测量的笼式频率从预测实际笼频率的书写参考轨迹获得。 然后使用预测的笼式频率来导出补偿位置命令。 在伺服写入间隔期间，补偿位置命令用于控制磁头，使得磁头跟随由磁盘笼频率引起的磁盘运动。