公开(公告)号：EP1262970A1

公开(公告)日：2002-12-04

申请号：EP01830358.6

申请日：2001-05-31

Applicant: STMicroelectronics S.r.l.

Inventor： Dati, Angelo ,  Tonci, Cecilia ,  Gaducci, Paolo

IPC: G11B20/10

CPC classification number: G11B20/10009

Abstract: This invention relates to a method of optimising a PRML (Partial Response Maximum Likelihood) receiving channel (2) for mass memory data receiving systems comprising an input receiving channel (2), a receiver (3) placed downstream of the channel (2), a detector (4) connected in cascade to the receiver (3), and a summing node (11) being input both the receiver output ( p(D) ) through a delay line (10), and the output from the detector (4) through an impulsive filter (12), which method is characterised by:

performing an indirect estimate of the noise strength p(D) by filtering out the error sequence ( e(D) ), i.e. the output signal from the summing node (11), through a filter (21); and
selecting either the output from the summing node (11) or the output from the filter (21) to obtain an optimisation parameter (ACCout) for feedback to the receiving system.

Abstract translation: 本发明涉及一种优化用于大容量存储器数据接收系统的PRML（部分响应最大似然）接收信道（2）的方法，所述接收信道包括输入接收信道（2），位于信道（2）下游的接收机（3） 检测器（4），其级联连接到所述接收器（3）;以及加法节点（11），其通过延迟线（10）输入所述接收器输出端（p（D）），并且所述检测器 ），该方法的特征在于：通过滤除误差序列（e（D）），即来自求和节点（11）的输出信号来执行噪声强度p（D）的间接估计 ），通过过滤器（21）; 以及选择来自求和节点（11）的输出或来自滤波器（21）的输出，以获得用于反馈给接收系统的优化参数（ACCout）。