公开(公告)号：US5434719A

公开(公告)日：1995-07-18

申请号：US215122

申请日：1994-03-18

申请人： Jeffrey A. Miller ,  Mark H. Groo ,  Prafulla B. Reddy ,  Stanley M. Schekall

发明人： Jeffrey A. Miller ,  Mark H. Groo ,  Prafulla B. Reddy ,  Stanley M. Schekall

IPC分类号： G11B19/04 ,  G11B20/18 ,  G11B27/30 ,  G11B5/09

CPC分类号： G11B27/3027 ,  G11B19/04 ,  G11B20/1833

摘要： An apparatus for correcting header information includes a transducer for reading and writing encoded information to a magnetic storage medium. A serial/deserializer provides a deserialized output. Header information from the deserializer is stored in a header storage register. The deserialized header information is also provided to a header error correction circuit. The header error correction circuit provides an output indicating location and value of errors in the header memory. This information is used to correct errors in the header memory. The corrected header information is compared with predetermined header information and used to determine whether subsequent data associated with the header should be written to or read from the magnetic storage medium.

摘要翻译： 用于校正标题信息的装置包括用于将编码信息读取和写入磁存储介质的换能器。 串行/解串器提供反序列化输出。 来自解串器的报头信息存储在报头存储寄存器中。 反序列化报头信息也提供给报头纠错电路。 报头纠错电路提供指示报头存储器中的位置和错误值的输出。 该信息用于纠正头部存储器中的错误。 将校正后的头信息与预定标题信息进行比较，并用于确定与标题相关联的后续数据是否应写入磁存储介质或从磁存储介质读取。

公开(公告)号：US06295176B1

公开(公告)日：2001-09-25

申请号：US08857535

申请日：1997-05-16

申请人： Prafulla B. Reddy ,  Jimmie R. Shaver ,  Sean R. Atsatt ,  Mark H. Groo ,  Timothy V. Gates ,  William K. Weberg

发明人： Prafulla B. Reddy ,  Jimmie R. Shaver ,  Sean R. Atsatt ,  Mark H. Groo ,  Timothy V. Gates ,  William K. Weberg

IPC分类号： G11B509

CPC分类号： G11B20/1883 ,  G11B27/3027 ,  G11B2220/20

摘要： A memory medium has a plurality of tracks arranged in a plurality of sectors with each track sector having a format which does not include header fields identifying sectors or sector defects or defect management procedures. Track management apparatus identifies the track sector currently confronting a transducer; the track management being based on sector pulses (in the case of a dedicated servo system), or being calculated based on track information, an index pulse and data wedge information from previous wedges (in the case of embedded servo systems), or being derived from a lookup table. To accommodate sector defects, a defect bank contains the identity and type of each defective or spare sector. Defect management apparatus is connected to the defect bank and track management apparatus to indicate when the sector confronting the transducer is a defective or spare sector to halt data transfer to thereby skip the defective sector, or to generate an interrupt signal to the processor to transfer data between the processor and an alternate sector.

摘要翻译： 存储器介质具有布置在多个扇区中的多个轨道，每个轨道扇区具有不包括标识扇区或扇区缺陷或缺陷管理过程的报头字段的格式。 轨道管理装置识别目前面对换能器的轨道扇区; 轨道管理基于扇区脉冲（在专用伺服系统的情况下），或者基于轨迹信息计算，索引脉冲和来自先前楔形（在嵌入式伺服系统的情况下）的数据楔形信息，或被导出 从查找表。 为了适应部门缺陷，缺陷库包含每个有缺陷或备用扇区的身份和类型。 缺陷管理装置连接到缺陷库和跟踪管理装置，以指示何时面向传感器的扇区是有缺陷的或备用的扇区，以停止数据传输，从而跳过缺陷扇区，或者产生一个中断信号给处理器传送数据 处理器和备用扇区之间。

公开(公告)号：US5818654A

公开(公告)日：1998-10-06

申请号：US869041

申请日：1997-06-04

申请人： Prafulla B. Reddy ,  Jimmie R. Shaver ,  Sean R. Atsatt ,  Mark H. Groo ,  Timothy V. Gates ,  William K. Weberg

发明人： Prafulla B. Reddy ,  Jimmie R. Shaver ,  Sean R. Atsatt ,  Mark H. Groo ,  Timothy V. Gates ,  William K. Weberg

IPC分类号： G11B20/18 ,  G11B27/30 ,  G11B5/09 ,  G11B5/596

CPC分类号： G11B20/1883 ,  G11B27/3027 ,  G11B2020/1234 ,  G11B2220/20

摘要： A memory medium has a plurality of tracks arranged in a plurality of sectors with each track sector having a format which does not include header fields identifying sectors or sector defects or defect management procedures. Track management apparatus identifies the track sector currently confronting a transducer; the track management being based on sector pulses (in the case of a dedicated servo system), or being calculated based on track information, an index pulse and data wedge information from previous wedges (in the case of embedded servo systems), or being derived from a lookup table. To accommodate sector defects, a defect bank contains the identity and type of each defective or spare sector. Defect management apparatus is connected to the defect bank and track management apparatus to indicate when the sector confronting the transducer is a defective or spare sector to halt data transfer to thereby skip the defective sector, or to generate an interrupt signal to the processor to transfer data between the processor and an alternate sector.

摘要翻译： 存储器介质具有布置在多个扇区中的多个轨道，每个轨道扇区具有不包括标识扇区或扇区缺陷或缺陷管理过程的报头字段的格式。 轨道管理装置识别目前面对换能器的轨道扇区; 轨道管理基于扇区脉冲（在专用伺服系统的情况下），或者基于轨迹信息计算，索引脉冲和来自先前楔形（在嵌入式伺服系统的情况下）的数据楔形信息，或被导出 从查找表。 为了适应部门缺陷，缺陷库包含每个有缺陷或备用扇区的身份和类型。 缺陷管理装置连接到缺陷库和跟踪管理装置，以指示何时面向传感器的扇区是有缺陷的或备用的扇区，以停止数据传输，从而跳过缺陷扇区，或者产生一个中断信号给处理器传送数据 处理器和备用扇区之间。