公开(公告)号：US06606211B1

公开(公告)日：2003-08-12

申请号：US09556884

申请日：2000-04-19

申请人： Tuang Liang Bernard Lim ,  Myint Ngwe ,  Hwee Peng Teo ,  Fong Kheon Chong

发明人： Tuang Liang Bernard Lim ,  Myint Ngwe ,  Hwee Peng Teo ,  Fong Kheon Chong

IPC分类号： G11B509

CPC分类号： G11B20/1816 ,  G11B5/012 ,  G11B20/1883 ,  G11B20/1889 ,  G11B27/36 ,  G11B2220/20

摘要： Apparatus for detecting defect in a recordable medium such as a disc drive is disclosed. The apparatus includes a recording system which write and read test data on the medium. The apparatus also includes a first comparator for comparing the read data to a first threshold. A first and a second counter, operably connected to the first comparator, are incremented when the read data exceeds the first threshold. When the first counter obtains a first count value, a first defect signal is produced. Data domains associated with the recordable medium are marked as bad in response to the first defect signal. When the second counter obtains a second count value, a second defect signal is produced and data sectors associated with the recordable medium are marked as bad in response to the second defect signal. A method for detecting defects in a recordable medium is also disclosed.

摘要翻译： 公开了一种用于检测诸如盘驱动器的可记录介质中的缺陷的装置。 该装置包括在介质上写入和读取测试数据的记录系统。 该装置还包括用于将读取的数据与第一阈值进行比较的第一比较器。 当读取的数据超过第一阈值时，可操作地连接到第一比较器的第一计数器和第二计数器递增。 当第一计数器获得第一计数值时，产生第一缺陷信号。 与可记录介质相关联的数据域响应于第一缺陷信号被标记为不良。 当第二计数器获得第二计数值时，产生第二缺陷信号，并且响应于第二缺陷信号将与可记录介质相关联的数据扇区标记为不良。 还公开了一种用于检测可记录介质中的缺陷的方法。