公开(公告)号：US6078453A

公开(公告)日：2000-06-20

申请号：US967123

申请日：1997-11-12

Applicant: Rich A. Dziallo ,  Mark Hagen

Inventor： Rich A. Dziallo ,  Mark Hagen

IPC: G11B5/00 ,  G11B5/012 ,  G11B5/55 ,  G11B5/596 ,  G11B5/02

CPC classification number: G11B5/59605 ,  G11B5/012 ,  G11B5/5534 ,  G11B5/59633 ,  G11B2005/0013 ,  G11B2005/0018 ,  G11B5/5547

Abstract: A method of deriving optimum read channel parameters for use in reading servo sector data from a disk drive having a head mounted on an actuator, a read channel including a preamplifier, a disk having a plurality of tracks, each track having multiple sequentially active servo sectors, a sampled signal head positioning servo controller to control the actuator position, a microprocessor, and a memory. The first step is to store default values and variable test values associated with read channel parameters. The microprocessor is programmed to detect certain servo errors which may occur. The read channel parameters are initially set to the default values in order to ensure that the disk drive can properly perform a seek. A series of seeks is then performed in alternating directions over a band of tracks. While performing the seeks, one of the read channel parameters is set to one of the variable test values for a first set of alternating servo sectors; next, the read channel parameters are set back to their default values for a second set of alternating servo sectors; and servo errors which occur during the series of seeks are recorded. This process is repeated for each of a predetermined matrix of test values. At the end, each of the read channel parameter values resulting in the least errors logged is identified as being optimal, and a table of optimized read channel parameter values is stored in the disk drive.

Abstract translation: 一种导出用于从具有头部安装在致动器上的磁盘驱动器读取伺服扇区数据的最佳读取通道参数的方法，包括前置放大器的读取通道，具有多个磁道的磁盘，每个磁道具有多个顺序有效的伺服扇区 ，采样信号头定位伺服控制器来控制致动器位置，微处理器和存储器。 第一步是存储与读通道参数相关联的默认值和变量测试值。 微处理器被编程为检测可能发生的某些伺服误差。 读通道参数最初设置为默认值，以确保磁盘驱动器可以正确执行查找。 然后在一条轨道上的交替方向上执行一系列寻道。 在执行寻道时，将读取通道参数中的一个设置为第一组交替伺服扇区的可变测试值之一; 接下来，将读取的通道参数设置回第二组交替伺服扇区的默认值; 并且记录在一系列寻找期间发生的伺服误差。 针对测试值的预定矩阵中的每一个重复该过程。 最后，将记录的最少错误的每个读取通道参数值标识为最佳，并且将优化的读取通道参数值的表存储在磁盘驱动器中。