公开(公告)号：WO1997039365A1

公开(公告)日：1997-10-23

申请号：PCT/US1997005731

申请日：1997-04-08

Applicant: PHASE METRICS

Inventor： PHASE METRICS ,  POGREBINSKY, Vladimir ,  IOSILEVSKY, Igor ,  BURT, George, A., Jr. ,  FERRY, David

IPC: G01R33/12

CPC classification number: G01R33/1207

Abstract: A method and apparatus (60) for detecting defects on the surface of a data recording medium. In one embodiment the present invention includes a sensor (62) for detecting defects on the surface of a magnetic disk. The sensor (62) generates an analog voltage signal that is representative of a surface anomaly detected on the disk surface. An analog signal processor (64) processes the signal before it is received by a peak detecting circuit (68). The peak detecting circuit (68) detects and converts a peak of the analog signal into digital data. The digital data is received and manipulated by a digital signal processor (70) where the peak amplitude, average peak amplitude and average peak power of the defect may be calculated.

Abstract translation: 一种用于检测数据记录介质表面上的缺陷的方法和装置（60）。 在一个实施例中，本发明包括用于检测磁盘表面上的缺陷的传感器（62）。 传感器（62）产生代表在盘表面上检测到的表面异常的模拟电压信号。 模拟信号处理器（64）在由峰值检测电路（68）接收之前处理该信号。 峰值检测电路（68）检测并将模拟信号的峰值转换为数字数据。 数字数据由数字信号处理器（70）接收和操纵，其中可以计算缺陷的峰值振幅，平均峰值振幅和平均峰值功率。