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1. 发明授权

US07068459B1 Adjusting track density by changing PES algorithm when servo writing a disk drive from spiral tracks 失效
标题翻译：当伺服从螺旋轨道写入磁盘驱动器时，通过改变PES算法来调整轨道密度
公开(公告)号：US07068459B1
公开(公告)日：2006-06-27
申请号：US10946462
申请日：2004-09-20
申请人： Robert L. Cloke , Siri S. Weerasooriya , Tehri S. Lee , Edgar D. Sheh , Wing Ying
发明人： Robert L. Cloke , Siri S. Weerasooriya , Tehri S. Lee , Edgar D. Sheh , Wing Ying
IPC分类号： G11B21/02 , G11B5/09 , G11B5/596
CPC分类号： G11B5/59633 , G11B5/59638 , G11B5/59661
摘要： A method and apparatus is disclosed for writing product servo sectors to a disk of a disk drive to define a plurality of data tracks. The disk drive comprises the disk and a head actuated over the disk. The disk comprises a plurality of spiral tracks which are read using the head to synchronize a write clock and to generate a position error signal (PES) according to a PES algorithm used to maintain the head along a first servo track while writing product servo sectors along the first servo track. The PES algorithm is adjusted to seek the head to a second servo track, and the head is used to write product servo sectors along the second servo track.
摘要翻译：公开了一种将产品伺服扇区写入磁盘驱动器的盘以定义多个数据轨道的方法和装置。磁盘驱动器包括磁盘和在盘上启动的磁头。磁盘包括多个螺旋磁道，它们使用磁头读取以同步写时钟，并根据用于沿着第一伺服磁道保持磁头的PES算法产生位置误差信号（PES），同时沿着第一个伺服轨道。调整PES算法以寻找头到第二伺服轨道，并且头用于沿着第二伺服轨道写入乘积伺服扇区。

2. 发明授权

US06965489B1 Using an external spiral servo writer to write reference servo sectors and spiral tracks to a disk to facilitate writing product servo sectors to the disk 有权
标题翻译：使用外部螺旋伺服写入器将参考伺服扇区和螺旋轨迹写入磁盘，以便于将产品伺服扇区写入磁盘
公开(公告)号：US06965489B1
公开(公告)日：2005-11-15
申请号：US10769387
申请日：2004-01-31
申请人： Tehri S. Lee , Robert L. Cloke , Siri S. Weerasooriya
发明人： Tehri S. Lee , Robert L. Cloke , Siri S. Weerasooriya
IPC分类号： G11B5/09 , G11B5/596 , G11B21/02
CPC分类号： G11B5/59633 , G11B5/59661
摘要： A method of writing product servo sectors to a disk of a disk drive is disclosed. An external spiral servo writer writes a plurality of reference servo sectors at an outer diameter of the disk and a plurality of spiral tracks that spiral from an outer diameter to an inner diameter of the disk. At the beginning of the product servo writing process, the reference servo sectors are demodulated to initially synchronize a servo write clock. The spiral tracks are then demodulated to maintain synchronization of the servo write clock as well as maintain the head along a target circumferential path while writing product servo sectors to the disk.
摘要翻译：公开了一种将产品伺服扇区写入磁盘驱动器的盘的方法。外部螺旋伺服写入器在盘的外径处写入多个参考伺服扇区，以及从盘的外径螺旋形到内径的多个螺旋轨道。在产品伺服写入过程开始时，参考伺服扇区被解调为最初同步伺服写入时钟。然后解调螺旋轨道以保持伺服写入时钟的同步，并且在将产品伺服扇区写入盘时沿着目标圆周路径保持头部。

3. 发明授权

US06989954B1 Demodulating servo sectors and spiral tracks using common circuitry 失效
标题翻译：使用公共电路解调伺服扇区和螺旋轨道
公开(公告)号：US06989954B1
公开(公告)日：2006-01-24
申请号：US10769480
申请日：2004-01-31
申请人： Tehri S. Lee , Robert L. Cloke , Siri S. Weerasooriya
发明人： Tehri S. Lee , Robert L. Cloke , Siri S. Weerasooriya
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/59688
摘要： A method of manufacturing a disk drive by demodulating product servo sectors and spiral tracks written on a disk of the disk drive is disclosed. An external spiral servo writer writes a plurality of spiral tracks that spiral from an outer diameter to an inner diameter of the disk. Each spiral track comprises a high frequency signal interrupted at a predetermined interval by a sync mark. The spiral tracks are used to write product servo sectors to the disk during a fill operation. Common circuitry, such as burst demodulation circuitry, is used to demodulate the high frequency signal in the spiral tracks during the fill operation as well as demodulate the product servo sectors.
摘要翻译：公开了一种通过解调写入磁盘驱动器的磁盘上的产品伺服扇区和螺旋磁道来制造磁盘驱动器的方法。外部螺旋伺服写入器写入从盘的内径螺旋形的多个螺旋形轨道。每个螺旋轨道包括通过同步标记以预定间隔中断的高频信号。螺旋轨道用于在填充操作期间将产品伺服扇区写入磁盘。诸如脉冲串解调电路之类的公共电路用于在填充操作期间对螺旋磁道中的高频信号进行解调以及解调产品伺服扇区。

4. 发明授权

US07468855B1 Servo writing a disk drive from a number of spiral tracks equal to a non-integer multiple of product servo wedges 有权
标题翻译：伺服从多个螺旋轨道写入一个等于产品伺服楔的非整数倍的磁盘驱动器
公开(公告)号：US07468855B1
公开(公告)日：2008-12-23
申请号：US11704430
申请日：2007-02-09
申请人： Siri S. Weerasooriya , Tehri S. Lee
发明人： Siri S. Weerasooriya , Tehri S. Lee
IPC分类号： G11B21/02 , G11B5/09 , G11B5/596
CPC分类号： G11B5/59655 , G11B5/59661 , G11B5/59666
摘要： A method is disclosed of writing product servo sectors to a disk of a disk drive to define a plurality of product servo wedges, the disk comprising a plurality of spiral tracks. The spiral tracks are spaced apart circumferentially by a substantially equal spacing, and the number of spiral tracks equals a non-integer multiple of product servo wedges. The head internal to the disk drive is used to read the spiral tracks to generate a read signal, and the sync marks are detected from the read signal to generate a sync mark detect signal. A timing recovery measurement is generated in response to the sync mark detect signal, and a frequency control signal is generated in response to the timing recovery measurement. A servo write clock is generated in response to the frequency control signal which is used to write the product servo sectors to the disk.
摘要翻译：公开了一种将产品伺服扇区写入盘驱动器的盘以限定多个产品伺服楔的方法，该盘包括多个螺旋形轨道。螺旋形轨道周向间隔开大致相等的间隔，并且螺旋轨道的数量等于产品伺服楔的非整数倍。磁盘驱动器内部的头用于读取螺旋轨迹以产生读取信号，并且从读取信号检测同步标记以产生同步标记检测信号。响应于同步标记检测信号产生定时恢复测量，并且响应于定时恢复测量而产生频率控制信号。响应于用于将产品伺服扇区写入盘的频率控制信号产生伺服写入时钟。

5. 发明授权

US07301717B1 Servo writing a disk drive by integrating a spiral track read signal 有权
标题翻译：通过集成螺旋磁道读取信号来伺服写入磁盘驱动器
公开(公告)号：US07301717B1
公开(公告)日：2007-11-27
申请号：US11018554
申请日：2004-12-20
申请人： Tehri S. Lee , Siri S. Weerasooriya
发明人： Tehri S. Lee , Siri S. Weerasooriya
IPC分类号： G11B5/09
CPC分类号： G11B5/59655 , G11B5/59661 , G11B5/59666 , G11B20/10222 , G11B20/12 , G11B20/14 , G11B2020/10916 , G11B2020/1281 , G11B2020/1287 , G11B2020/1484 , G11B2220/2516
摘要： A method of writing product servo sectors to a disk of a disk drive is disclosed. The disk comprises a plurality of spiral tracks, wherein each spiral track comprises a high frequency signal interrupted by a sync mark at a sync mark interval. The head internal to the disk drive is used to read the spiral tracks to generate a read signal. The read signal is integrated to generate a ramp signal, wherein a position error signal is generated from the ramp signal. The position error signal is used to maintain the head internal to the disk drive along a servo track while writing product servo sectors along the servo track.
摘要翻译：公开了一种将产品伺服扇区写入磁盘驱动器的盘的方法。盘包括多个螺旋轨道，其中每个螺旋轨道包括以同步标记间隔由同步标记中断的高频信号。磁盘驱动器内部的磁头用于读取螺旋轨道以产生读取信号。读信号被积分以产生斜坡信号，其中从斜坡信号产生位置误差信号。位置误差信号用于沿着伺服轨道将磁盘驱动器内部保持在磁头内，同时沿着伺服磁道写入产品伺服扇区。

6. 发明授权

US07499236B1 Calibrating correlation between PES and off-track displacement by processing high frequency signal in spiral track 有权
标题翻译：通过处理螺旋轨道中的高频信号来校准PES和偏离轨道位移之间的相关性
公开(公告)号：US07499236B1
公开(公告)日：2009-03-03
申请号：US11101910
申请日：2005-04-08
申请人： Tehri S. Lee , Siri S. Weerasooriya , Harry S. Hvostov
发明人： Tehri S. Lee , Siri S. Weerasooriya , Harry S. Hvostov
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/59661
摘要： A method is disclosed for writing product servo sectors to the disk of a disk drive by demodulating spiral tracks recorded on the disk. Each spiral track comprises a high frequency signal interrupted at a predetermined interval by a sync mark. The high frequency signal is demodulated into a plurality of servo burst signals, and a position error signal is generated from the servo burst signals. A correlation between the position error signal and an off-track displacement of a head is calibrated, for example, by moving the head radially over the disk until the servo burst signals attain a first predetermined relationship, and then calibrating the correlation in response to the corresponding position error signal.
摘要翻译：公开了一种通过解调记录在盘上的螺旋轨道将产品伺服扇区写入磁盘驱动器的盘的方法。每个螺旋轨道包括通过同步标记以预定间隔中断的高频信号。高频信号被解调为多个伺服脉冲串信号，并且从伺服脉冲串信号产生位置误差信号。位置误差信号与头部的偏离轨迹位移之间的相关性被校准，例如通过将磁头径向移动到磁盘上直到伺服脉冲串信号达到第一预定关系，然后响应于对应位置误差信号。

7. 发明授权

US07248426B1 Servo writing a disk drive from spiral tracks by shifting a demodulation window an integer number of sync mark intervals 有权
标题翻译：通过将解调窗口移位整数的同步标记间隔，从螺旋形轨道写入磁盘驱动器
公开(公告)号：US07248426B1
公开(公告)日：2007-07-24
申请号：US10903522
申请日：2004-07-30
申请人： Siri S. Weerasooriya , Tehri S. Lee
发明人： Siri S. Weerasooriya , Tehri S. Lee
IPC分类号： G11B21/02
CPC分类号： G11B5/59655 , G11B5/59661 , G11B5/59666 , G11B20/10222 , G11B20/12 , G11B20/14 , G11B2020/10916 , G11B2020/1281 , G11B2020/1287 , G11B2020/1484 , G11B2220/2516
摘要： A method of writing product servo sectors to a disk of a disk drive is disclosed. The disk comprises a plurality of spiral tracks, wherein each spiral track comprises a high frequency signal interrupted by a sync mark at a sync mark interval. The sync marks in the spiral tracks are detected to synchronize a servo write clock used to open a demodulation window during which the high frequency signal in the spiral tracks is demodulated to generate a position error signal for maintaining the head along a first servo track while writing product servo sectors along the first servo track. The demodulation window is then shifted by an integer number of sync mark intervals to initiate a seek to a second servo track. The head is then used to write product servo sectors along the second servo track.
摘要翻译：公开了一种将产品伺服扇区写入磁盘驱动器的盘的方法。盘包括多个螺旋轨道，其中每个螺旋轨道包括以同步标记间隔由同步标记中断的高频信号。检测螺旋轨道中的同步标记以同步用于打开解调窗口的伺服写入时钟，在该解调窗口期间解调螺旋轨道中的高频信号以产生位置误差信号，用于在写入时沿着第一伺服轨道保持磁头产品伺服扇区沿着第一个伺服轨道。然后将解调窗口移位整数个同步标记间隔，以启动对第二伺服轨道的寻道。然后头部用于沿着第二伺服轨道写入产品伺服扇区。

8. 发明授权

US07068461B1 Servo writing a disk drive by overwriting a harmonic frequency fill pattern in the servo burst area 失效
标题翻译：通过覆盖伺服突发区域中的谐波频率填充模式来伺服写入磁盘驱动器
公开(公告)号：US07068461B1
公开(公告)日：2006-06-27
申请号：US10998978
申请日：2004-11-29
申请人： Jack M. Chue , Siri S. Weerasooriya , Tehri S. Lee
发明人： Jack M. Chue , Siri S. Weerasooriya , Tehri S. Lee
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/59638
摘要： A disk drive is disclosed comprising a disk having a plurality of servo bursts written using perpendicular magnetic recording, wherein each servo burst is written at a servo burst frequency. A fill pattern is written between the servo bursts using perpendicular magnetic recording at a frequency substantially equal to an even harmonic of the servo burst frequency, and a phase shift occurs at the transition between the servo burst and the fill pattern. A head is actuated over the disk, and a sampling device samples a read signal emanating from the head to generate a sequence of read signal sample values. Control circuitry demodulates the servo bursts from the sequence of read signal sample values by computing a single-point Discrete Fourier Transform (DFT) at the servo burst frequency.
摘要翻译：公开了一种磁盘驱动器，其包括具有使用垂直磁记录写入的多个伺服突发的盘，其中以伺服突发频率写入每个伺服脉冲串。使用基本上等于伺服脉冲串频率的偶次谐波的频率的垂直磁记录在伺服脉冲串之间写入填充图案，并且在伺服脉冲串和填充图案之间的转变处发生相移。头部被驱动到盘上，并且采样装置对从头部发出的读取信号进行采样以产生读取信号样本值的序列。控制电路通过在伺服脉冲串频率处计算单点离散傅里叶变换（DFT），从读取信号采样值序列中解调伺服脉冲串。

9. 发明授权

US07433143B1 Adjusting track density by changing slope of spiral tracks used to servo write a disk drive 有权
标题翻译：通过改变用于伺服写入磁盘驱动器的螺旋轨迹的斜率来调整轨道密度
公开(公告)号：US07433143B1
公开(公告)日：2008-10-07
申请号：US10943287
申请日：2004-09-17
申请人： Wing Ying , Jack M. Chue , Siri S. Weerasooriya , Tehri S. Lee
发明人： Wing Ying , Jack M. Chue , Siri S. Weerasooriya , Tehri S. Lee
IPC分类号： G11B5/09
CPC分类号： G11B5/012 , G11B5/5534 , G11B5/59633 , G11B5/59661
摘要： A method and apparatus is disclosed for adjusting the track density by changing the slope of spiral tracks used to servo write a disk drive. A target track density is established for a disk surface, and a plurality of spiral tracks are written to the disk surface in response to the target track density. Each spiral track comprises a high frequency signal interrupted at a predetermined interval by a sync mark, and a slope of the spiral tracks is selected in response to the target track density. The head internal to the disk drive is used to read the spiral tracks in order to write product servo sectors to the disk to define a plurality of data tracks, wherein the slope of the spiral tracks determines the density of the data tracks.
摘要翻译：公开了一种用于通过改变用于伺服写入磁盘驱动器的螺旋磁道的斜率来调整磁道密度的方法和装置。针对磁盘表面建立目标磁道密度，并且响应于目标磁道密度将多个螺旋磁道写入磁盘表面。每个螺旋轨道包括通过同步标记以预定间隔中断的高频信号，并且响应于目标轨道密度选择螺旋轨道的斜率。磁盘驱动器内部的磁头用于读取螺旋磁道，以便将产品伺服扇区写入磁盘以定义多个数据磁道，其中螺旋磁道的斜率决定数据磁道的密度。

10. 发明授权

US07113362B1 Servo writing a disk drive by processing spiral tracks in an interleaved manner 有权
标题翻译：通过以交错方式处理螺旋轨迹来伺服写入磁盘驱动器
公开(公告)号：US07113362B1
公开(公告)日：2006-09-26
申请号：US11208358
申请日：2005-08-19
申请人： Tehri S. Lee , Siri S. Weerasooriya
发明人： Tehri S. Lee , Siri S. Weerasooriya
IPC分类号： G11B5/596
CPC分类号： G11B5/59633 , G11B5/59661
摘要： A disk drive is disclosed having a disk comprising a plurality of spiral tracks, a head actuated over the disk, and control circuitry operable to process the spiral tracks in an interleaved manner to write a plurality of product servo sectors to the disk to define a plurality of radially spaced, concentric data tracks.
摘要翻译：公开了一种磁盘驱动器，其具有包括多个螺旋轨道的磁盘，在盘上致动的磁头，以及控制电路，可操作用于以交错方式处理螺旋磁道，以将多个产品伺服扇区写入磁盘以限定多个的径向间隔的同心数据轨道。

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