公开(公告)号：US20020051308A1

公开(公告)日：2002-05-02

申请号：US09984619

申请日：2001-10-30

Applicant: HEWLETT-PACKARD COMPANY

Inventor： Peter Walsh ,  Rafel Jibry

IPC: G11B005/09

CPC classification number: G11B27/32 ,  G11B5/00813 ,  G11B20/10 ,  G11B2220/90 ,  G11B2220/913

Abstract: A data reader arranged to produce a signal on reading a data holding medium (4), said data reader comprising processing circuitry (8) arranged to process said signal, said processing circuitry including a filter (14) having a variable cut-off frequency (FC), a velocity signal generator (23) arranged to produce a signal (21) corresponding to the velocity of the data holding medium (4), and a processor (22), said processor (22) being arranged to read the velocity signal (21) and set the cut-off frequency (FC) of the filter (14) The data reader is generally arranged to be incorporated into a tape drive (2) arranged to be used as a computer data storage device.

Abstract translation: 一种数据读取器，被布置成在读取数据保持介质（4）时产生信号，所述数据读取器包括处理所述信号的处理电路（8），所述处理电路包括具有可变截止频率的滤波器（14） FC），布置成产生对应于数据保持介质（4）的速度的信号（21）的速度信号发生器（23）和处理器（22），所述处理器（22）被布置为读取速度信号 （21）并设置滤波器（14）的截止频率（FC）数据读取器通常被布置成并入布置成用作计算机数据存储装置的磁带驱动器（2）中。

公开(公告)号：US20020051309A1

公开(公告)日：2002-05-02

申请号：US09984625

申请日：2001-10-30

Applicant: Hewlett-Packard Company

Inventor： Rafel Jibry ,  Peter Walsh

IPC: G11B005/09

CPC classification number: G11B20/02 ,  G11B5/00813 ,  G11B20/10009

Abstract: A data reader arranged to produce an output signal on reading a data signal (1), processing circuitry (5) being arranged to produce said output signal, said processing circuitry (5) including at least a first (14) and a second (23) feedback loop, each of the feedback loops (14,23) being arranged to produce a feedback signal, said first feedback loop (14) having a first characteristic and said second feedback loop (23) having a second characteristic, the processing circuitry (5) being arranged to apply more weight to the feedback signal of the feedback loop (14,23) having the appropriate characteristic to control processing of said data signal (1) at a particular instance. The data reader is suitable for any device that is arranged to receive data but is envisaged to have application in tape drives, hard disk drives, mobile telephones, IRDA links, etc.

Abstract translation: 一种数据读取器，被布置为在读取数据信号（1）时产生输出信号，处理电路（5）被布置成产生所述输出信号，所述处理电路（5）至少包括第一（14）和第二（23） ）反馈回路，每个反馈回路（14,23）被布置成产生反馈信号，所述第一反馈回路（14）具有第一特性，所述第二反馈回路（23）具有第二特性，所述处理电路（ 5）被布置为对具有适当特性的反馈回路（14,23）的反馈信号施加更多的权重，以在特定情况下控制所述数据信号（1）的处理。 数据读取器适用于被安排为接收数据但被设想在磁带机，硬盘驱动器，移动电话，IRDA链路等中应用的任何设备。