公开(公告)号：US20060103972A1

公开(公告)日：2006-05-18

申请号：US10986684

申请日：2004-11-12

申请人： Sang Chu ,  Kang Lee ,  Keung Cho ,  Jong Kim ,  Jung Lee ,  Cheol Park ,  Hae Lee

发明人： Sang Chu ,  Kang Lee ,  Keung Cho ,  Jong Kim ,  Jung Lee ,  Cheol Park ,  Hae Lee

IPC分类号： G11B5/596

CPC分类号： G11B5/5526

摘要： A hard disk drive with a disk that has a plurality of servo sections and a plurality of data sections. At least some of the data sections have a track density different than the track density of the servo sections. The disk drive has a controller that may convert a data track number to a servo track number to compensate for the different densities. The conversion may be required to conduct a seek routine to access a data track associated with the data track number.

摘要翻译： 具有具有多个伺服部分和多个数据部分的盘的硬盘驱动器。 至少一些数据部分具有与伺服部分的轨道密度不同的轨道密度。 磁盘驱动器具有可以将数据磁道号转换为伺服磁道号的控制器，以补偿不同的密度。 可能需要进行转换以进行寻道例程以访问与数据轨道号相关联的数据轨迹。

公开(公告)号：US20070006446A1

公开(公告)日：2007-01-11

申请号：US11464488

申请日：2006-08-14

申请人： Geng Wang ,  Hae Lee ,  Keung Cho ,  Sang Lee

发明人： Geng Wang ,  Hae Lee ,  Keung Cho ,  Sang Lee

IPC分类号： H04R31/00

CPC分类号： G11B5/3136 ,  G11B5/012 ,  G11B5/455 ,  G11B5/4806 ,  G11B5/4833 ,  G11B5/484 ,  Y10T29/49025 ,  Y10T29/49027 ,  Y10T29/49028 ,  Y10T29/49032 ,  Y10T29/49036

摘要： Thermal pole tip protrusion is caused by the materials in and around the head slider expanding during write operations till part of those materials protrude, leading to contact with the rotating disk surface, altering the flying height and often wearing down part of the disk surface. While it is well known that read-write heads expand during writing, the inventors are unaware of anyone else who recognized this situation's significance, particularly as the flying height decreases and the data rates increase, both of which are required for high areal density disk drives. The inventors realized that they could detect the problem at the spin stand level by testing head gimbal assemblies to reliably, and inexpensively, predict the tendency for thermal pole tip protrusion. This leads to selection of head gimbal assemblies, which do not have the thermal pole tip protrusion tendency. The selected head gimbal assemblies have better reliability, as do actuators and disk drives made with the selected head gimbal assemblies.

摘要翻译： 热极尖突起是由写入操作期间头部滑块内和周围的材料引起的，直到这些材料的一部分突出，导致与旋转盘表面接触，改变飞行高度并经常磨损磁盘表面的一部分。 虽然众所周知，读写头在写入期间扩展，但是发明人不知道任何认识到这种情况的人的意义，特别是当飞行高度降低并且数据速率增加时，两者都是高密度磁盘驱动器所需要的 。 本发明人意识到，它们可以通过测试头万向架组件可靠且廉价地预测热极尖端突起的趋势来检测旋转台水平的问题。 这导致了不具有热极尖突起倾向的头万向节组件的选择。 所选择的头万向架组件具有更好的可靠性，与使用所选择的头万向架组件制造的致动器和磁盘驱动器一样。

公开(公告)号：US20050264909A1

公开(公告)日：2005-12-01

申请号：US11176414

申请日：2005-07-06

申请人： Hae Jung Lee ,  Sang Lee ,  Keung Cho

发明人： Hae Jung Lee ,  Sang Lee ,  Keung Cho

IPC分类号： G11B21/02 ,  G11B5/00 ,  G11B5/02 ,  G11B5/455

CPC分类号： G11B5/455 ,  G11B2005/0008

摘要： The invention includes a testing method which may be applied to at least one writer in a disk drive during the self-test phase to generate write parameters, focused on the Over Shoot Control (OSC) of the write current parameter to improve the reliability of write operations by that writer. The Minimum OSC is used for write operations in normal temperatures. The Optimum OSC is used for a first lower temperature range, preferably between essentially 15 degrees Centigrade and essentially 5 degrees Centigrade. The Maximum OSC is preferred below essentially 5 degrees Centigrade. The Minimum OSC should preferably guarantee both an Adjacent Track Write (ATW) criteria, as well as guarantee a Write Induced Instability (WII) criteria. The invention includes the write parameter collection, as well as the disk drive containing the generated write parameter collection. The invention also includes the method of using that write parameter collection to control a writer while writing to tracks belonging to the radial zone collection and program systems implementing the invention's methods.

摘要翻译： 本发明包括测试方法，其可以在自检阶段期间应用于磁盘驱动器中的至少一个写入器以产生写入参数，其集中在写入当前参数的过拍控制（OSC）上，以提高写入的可靠性 作家的作业。 最低OSC用于正常温度下的写入操作。 最佳OSC用于第一较低温度范围，优选在基本上15摄氏度和基本上5摄氏度之间。 最高OSC优选低于基本上5摄氏度。 最小OSC应优选保证相邻轨道写入（ATW）标准，并保证写入诱发不稳定（WII）标准。 本发明包括写入参数集合以及包含生成的写入参数集合的磁盘驱动器。 本发明还包括使用该写入参数集来控制写入器同时写入属于径向区域集合的轨道和实现本发明方法的程序系统的方法。