公开(公告)号：EP0884727B1

公开(公告)日：2006-02-01

申请号：EP98304383.7

申请日：1998-06-03

Applicant: STMicroelectronics, Inc.

Inventor： Brambilla, Massimiliano ,  Nguyen, Chinh Dac ,  Lee, Eugene C.

IPC: G11B19/22 ,  H02P6/24

CPC classification number: G11B19/22

公开(公告)号：EP1003155A1

公开(公告)日：2000-05-24

申请号：EP99309211.3

申请日：1999-11-18

Applicant: STMicroelectronics, Inc.

Inventor： Patti, Giuseppe ,  Lee, Eugene C. ,  Alini, Roberto

IPC: G11B5/012 ,  G11B20/24 ,  G11B20/10

CPC classification number: G11B5/012 ,  G11B2005/0016

Abstract: To reduce thermal interference in the read signal of a disk drive, a variable or programmable resistance is used to change the transfer function of a filter (112) in the read channel of the disk drive to filter the read signal. The filter has a first cut-off frequency related to the programmed resistance during normal operation of the disk drive. When thermal interference is detected in the read signal, the resistance is programmed to another value resulting in the filter having a second cut-off frequency. The resistance element is variable or programmable to different values resulting in one of a multitude of cut-off frequencies for the filter.

Abstract translation: 为了减少在磁盘驱动器的读信号的热干扰，可变的或可编程的电阻被用来改变在盘驱动器的读通道的过滤器（112）的传递函数来过滤的读取信号。 该过滤器具有磁盘驱动器的正常手术期间相关的编程电阻的第一截止频率。 当在所读取的信号中检测到热干扰，电阻被编程为anotherValue导致过滤器具有第二截止频率。 电阻元件是可变的或可编程的，以在截止频率为所述过滤器的多个中的一个所得到的不同的值。