公开(公告)号：US06738205B1

公开(公告)日：2004-05-18

申请号：US09903445

申请日：2001-07-08

申请人： Patrick Moran ,  Tim Everett ,  Peter McEwen ,  Mike Moser ,  Stan Shepherd ,  Eduardo Gentile Veiga ,  Murat Erkocevic ,  Bill Baker

发明人： Patrick Moran ,  Tim Everett ,  Peter McEwen ,  Mike Moser ,  Stan Shepherd ,  Eduardo Gentile Veiga ,  Murat Erkocevic ,  Bill Baker

IPC分类号： G11B586

CPC分类号： G11B5/865 ,  G11B5/59633

摘要： A method and system for self-servo writing a disk drive by transferring a servo reference pattern by magnetic printing onto at least one storage surface of a reference disk, wherein a resulting printed reference pattern includes embedded servo information providing servo timing and transducer head position information; assembling the disk drive including the steps of installing at least said disk into the disk drive and enclosing said disk and the data transducers within a housing sealed against particulate contamination from an eternal ambient environment; reading the printed reference pattern from said disk via at least one transducer head to generate a readback signal; sampling the readback signal at a sampling rate to generate a sampled signal; processing the sampled signal waveform specturm to generate a recovered signal including the embedded servo information and a fundamental frequency of the sampled signal; using the servo information from the recovered signal to precisely position and maintain the data transducers at concentric track locations of disk storage surfaces; and self-writing disk drive servo patterns onto the storage surfaces at the concentric track locations with the data transducers in accordance with disk drive servo pattern features.

摘要翻译： 一种用于通过磁性印刷将伺服参考图案转移到参考盘的至少一个存储表面上来自动伺服写入磁盘驱动器的方法和系统，其中所得到的打印参考图案包括提供伺服定时和换能器头部位置信息的嵌入式伺服信息 ; 组装磁盘驱动器包括以下步骤：至少将所述磁盘安装到磁盘驱动器中，并将所述磁盘和数据传感器封装在壳体内，密封以防止来自永恒环境环境的颗粒污染物; 经由至少一个换能器头从所述盘读取打印的参考图案以产生回读信号; 以采样率对回读信号进行采样以产生采样信号; 处理采样信号波形谱以产生包括嵌入伺服信息和采样信号的基频的恢复信号; 使用来自恢复信号的伺服信息来精确地将数据传感器定位并保持在盘存储表面的同心轨迹位置; 以及根据磁盘驱动器伺服模式特征，使用数据传感器在同心轨道位置的存储表面上自写盘驱动器伺服模式。

公开(公告)号：US07382564B1

公开(公告)日：2008-06-03

申请号：US10858846

申请日：2004-06-02

申请人： Tim Everett ,  John VanLaanen ,  Howard Barlow ,  Robert L. Metz

发明人： Tim Everett ,  John VanLaanen ,  Howard Barlow ,  Robert L. Metz

IPC分类号： G11B21/02 ,  G11B5/596 ,  G11B5/09

CPC分类号： G11B5/5556 ,  G11B5/59616 ,  G11B5/59661 ,  G11B5/59688

摘要： Various embodiments of the present invention are generally directed to processing servo data on a storage surface by detecting a time difference between consecutive read signal envelopes from spiral servo information on the surface.

摘要翻译： 本发明的各种实施例一般涉及通过从表面上的螺旋伺服信息检测连续的读取信号包络之间的时间差来在存储表面上处理伺服数据。

公开(公告)号：US07248427B1

公开(公告)日：2007-07-24

申请号：US10858845

申请日：2004-06-02

申请人： Tim Everett ,  Brian Rigney

发明人： Tim Everett ,  Brian Rigney

IPC分类号： G11B21/02 ,  G11B5/596

CPC分类号： G11B5/59633 ,  G11B5/59622 ,  G11B5/59638 ,  G11B5/59661

摘要： The present invention is directed to a method and apparatus for reducing velocity errors when writing spiral servo information onto a disk surface of a disk drive. In one embodiment, a servo track writer is provided for moving a write head at a controlled velocity. The write head is used to write spiral servo information onto a disk surface. The write head is moved, using the servo track writer, at an actual velocity trajectory to simulate writing one spiral of spiral servo information. Differences between the actual velocity trajectory and a desired velocity trajectory are measured on a control sample by control sample basis over a window of control samples. The differences are integrated over the window. A gain, associated with the servo track writer controlling the velocity of the write head, is adjusted using the integrated differences.

摘要翻译： 本发明涉及一种在将螺旋伺服信息写入磁盘驱动器的磁盘表面时减少速度误差的方法和装置。 在一个实施例中，提供了用于以受控速度移动写入头的伺服轨迹写入器。 写头用于将螺旋伺服信息写入磁盘表面。 使用伺服轨迹写入器以实际速度轨迹移动写头，以模拟写入螺旋伺服信息的一个螺旋。 实际速度轨迹与所需速度轨迹之间的差异通过对照样本窗口上的控制样本在对照样本上进行测量。 差异集成在窗口上。 使用积分差调整与控制写入头速度的伺服轨迹写入器相关联的增益。

公开(公告)号：US07561359B1

公开(公告)日：2009-07-14

申请号：US10859061

申请日：2004-06-02

申请人： Jay Jeong ,  Tim Everett ,  Stan Shepherd

发明人： Jay Jeong ,  Tim Everett ,  Stan Shepherd

IPC分类号： G11B5/09 ,  G11B5/596

CPC分类号： G11B5/59633 ,  G11B5/59661

摘要： The present invention is directed to a method and apparatus for providing an absolute reference point on a disk surface of a disk drive. A write head associated with the disk surface is used to write spirals of servo information thereon, for example, under control of a servo track writer. The spirals of servo information include standard spirals and special spirals. In one embodiment, the special spirals are shorter than the standard spirals and the special spirals are rotationally non-symmetric. For example, an unequal number of standard spirals are interposed between one pair of adjacent special spirals relative to the number of standard spirals interposed between other pairs of adjacent special spirals. The special spirals may take a variety of other forms to distinguish themselves from standard spirals.

摘要翻译： 本发明涉及一种用于在盘驱动器的盘表面上提供绝对参考点的方法和装置。 与磁盘表面相关联的写头用于在伺服信息写入器的控制下写入伺服信息的螺旋线。 伺服信息的螺旋包括标准螺旋和特殊螺旋。 在一个实施例中，特殊螺旋比标准螺旋短，并且特殊螺旋旋转地不对称。 例如，相对于插入在其他相邻的特殊螺旋对之间的标准螺旋的数量，在一对相邻的特殊螺旋之间插入不等数量的标准螺旋。 特殊的螺旋可能采取各种其他形式来区别于标准螺旋。

公开(公告)号：US07149048B1

公开(公告)日：2006-12-12

申请号：US10859068

申请日：2004-06-02

申请人： Bill Ray ,  Tim Everett

发明人： Bill Ray ,  Tim Everett

IPC分类号： G11B5/596 ,  G11B5/09 ,  G11B21/02

CPC分类号： G11B5/59627

摘要： The present invention is directed to a method and apparatus for improving spiral-based position correction system stability via kernel frequency component modification. In one embodiment, a disk drive includes a disk surface with servo information written thereon, wherein the servo information includes repeatable runout. The disk drive includes a servo system having an error transfer function. Frequencies, where the error transfer function may experience phase changes, are determined and the direction of such phase changes are also determined. A kernel, which is used to calculate position correction values to compensate for repeatable runout, is provided. Phases of frequency components in the kernel, which correspond to the frequencies where the error transfer function may experience phase changes, are rotated.

摘要翻译： 本发明涉及一种用于通过核心频率分量修改改善基于螺旋的位置校正系统稳定性的方法和装置。 在一个实施例中，盘驱动器包括其上写有伺服信息的盘表面，其中伺服信息包括可重复的跳动。 磁盘驱动器包括具有错误传递功能的伺服系统。 确定误差传递函数可能经历相位变化的频率，并确定这种相位变化的方向。 提供了用于计算位置校正值以补偿可重复跳动的内核。 旋转与内核中频率分量相对应的误差传递函数可能经历相位变化的频率相位。