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1. 发明授权

US6014277A Multipath channel apparatus and method using offset parameters to compensate for amplitude and timing errors in data storage devices 失效
标题翻译：多路径信道装置和方法，使用偏移参数来补偿数据存储设备中的幅度和定时误差
公开(公告)号：US6014277A
公开(公告)日：2000-01-11
申请号：US647088
申请日：1996-05-08
申请人： Thomas Charles Christensen , Earl Albert Cunningham
发明人： Thomas Charles Christensen , Earl Albert Cunningham
IPC分类号： G06F13/00 , G11B20/10 , G11B20/18 , G11B5/09
CPC分类号： G11B20/10009 , G11B20/1833 , G11B2020/183
摘要： A multipath channel apparatus for a data storage device wherein data is stored on a storage medium and is read from the storage medium by a transducer or for a data communications system wherein data is transmitted to a receiver. A data channel having a plurality of data paths is operatively connected to the transducer to receive data read from the storage medium by the transducer, or operatively connected to receive data demodulated by the receiver or base band data received by the receiver. Preferably, each of the data paths has a differing parameter value. An error checking unit checks customer and redundancy data from each of the data paths. A selecting unit, which is responsive to the error checking unit, selects data from one of the data paths. In a preferred embodiment, the data stored on a storage medium includes a data field and an error correcting code field, and the customer and redundancy data from each of the data paths is checked using a calculated error correcting code sydrome.
摘要翻译：一种用于数据存储装置的多路径通道装置，其中数据被存储在存储介质上，并且由换能器或数据通信系统从存储介质读取，其中数据被发送到接收器。具有多个数据路径的数据通道可操作地连接到换能器，以接收由换能器从存储介质读取的数据，或可操作地连接以接收由接收器接收的接收器或基带数据解调的数据。优选地，每个数据路径具有不同的参数值。错误检查单元从每个数据路径检查客户和冗余数据。响应于错误检查单元的选择单元从数据路径之一中选择数据。在优选实施例中，存储在存储介质上的数据包括数据字段和纠错码字段，并且使用计算出的纠错码信息来检查来自每个数据路径的客户和冗余数据。

2. 发明授权

US5923502A Magneto-resistive head including a selectively placed low-reluctance path between shields 失效
标题翻译：磁阻头包括在屏蔽之间的选择性放置的低磁阻路径
公开(公告)号：US5923502A
公开(公告)日：1999-07-13
申请号：US576496
申请日：1995-12-21
申请人： Thomas Charles Christensen , Jodie Ann Christner , Earl Albert Cunningham , Jay Michael Mosbrucker
发明人： Thomas Charles Christensen , Jodie Ann Christner , Earl Albert Cunningham , Jay Michael Mosbrucker
IPC分类号： G11B5/11 , G11B5/31 , G11B5/39 , G11B5/48 , G11B23/00 , G11B5/008
CPC分类号： G11B5/3903 , G11B5/11 , G11B23/0007 , G11B5/3143 , G11B5/4806
摘要： A magnetic head including a shielded MR element which incorporates a low reluctance path between the shields to reduce interference picked up by inductive reading of the shields. The low reluctance path is provided outside a conductive loop of material which includes the MR element and its associated leads. The low reluctance path may include a magnetic short between the two shields.
摘要翻译：包括屏蔽MR元件的磁头，其在屏蔽之间包含低磁阻路径，以减少通过屏蔽的感应读数拾取的干扰。低磁阻路径设置在包括MR元件及其相关引线的材料的导电回路外部。低磁阻路径可以包括两个屏蔽之间的磁短路。

3. 发明授权

US06040955A Self servo writing file 失效
标题翻译：自动伺服写入文件
公开(公告)号：US06040955A
公开(公告)日：2000-03-21
申请号：US287477
申请日：1994-08-08
申请人： Dana Henry Brown , Thomas Charles Christensen , Earl A. Cunningham , Wayne A. Rogelstad
发明人： Dana Henry Brown , Thomas Charles Christensen , Earl A. Cunningham , Wayne A. Rogelstad
IPC分类号： G11B5/596 , G11B27/32 , G11B21/10
CPC分类号： G11B5/59633 , G11B27/322
摘要： A self servo writing file and method for writing servo patterns in a direct access storage device are provided. First servo information is written on a data storage media at a first crash stop. The transducer heads are moved offset from the written servo information while reading the last written servo information until the detected servo signal equals a predetermined value. Then servo information is written on the data storage media responsive to the detected servo signal equal to the predetermined value. The moving and writing steps are sequentially repeating until a second crash stop is reached. A quad-burst servo amplitude pattern or phase pattern can be used for the servo information. The servo writing method is adapted easily for many different servo options. When the file uses a hybrid servo or sector servo, the other surfaces can be written by duplicating the servo bursts with a high bandwidth servo system of the file. Alternatively, the servo writing steps can be repeated for each of the other surfaces for providing head dependent pitch. Variable track pitch can be provided by selectively varying the predetermined value compared with the detected servo signal.
摘要翻译：提供一种用于在直接存取存储装置中写入伺服模式的自伺服写入文件和方法。第一伺服信息在第一次碰撞停止时被写入数据存储介质。当读取最后写入的伺服信息直到检测到的伺服信号等于预定值时，传感器头与写入的伺服信息偏移。然后根据检测到的等于预定值的伺服信号将伺服信息写入数据存储介质上。顺序重复移动和写入步骤，直到达到第二次碰撞停止。伺服信息可以使用四脉冲串伺服幅度模式或相位模式。伺服写入方式适用于许多不同的伺服选项。当文件使用混合伺服或扇区伺服时，其他表面可以通过用文件的高带宽伺服系统复制伺服脉冲串来写入。或者，可以针对每个其他表面重复伺服写入步骤，以提供与头部相关的音调。可以通过与检测到的伺服信号相比选择性地改变预定值来提供可变轨道间距。

4. 发明授权

US5949603A Self servo writing file using the widest head 有权
标题翻译：自动写入文件使用最宽的头
公开(公告)号：US5949603A
公开(公告)日：1999-09-07
申请号：US224792
申请日：1999-01-04
申请人： Dana Henry Brown , Thomas Charles Christensen , Earl A. Cunningham , Wayne A. Rogelstad
发明人： Dana Henry Brown , Thomas Charles Christensen , Earl A. Cunningham , Wayne A. Rogelstad
IPC分类号： G11B5/596 , G11B27/32 , G11B21/10
CPC分类号： G11B5/59633 , G11B27/322
摘要： A self servo writing file and method for writing servo patterns in a direct access storage device are provided. First servo information is written on a data storage media at a first crash stop. The transducer heads are moved offset from the written servo information while reading the last written servo information until the detected servo signal equals a predetermined value. Then servo information is written on the data storage media responsive to the detected servo signal equal to the predetermined value. The moving and writing steps are sequentially repeated until a second crash stop is reached. A quad-burst servo amplitude pattern or phase pattern can be used for the servo information. The servo writing method is adapted easily for many different servo options. When the file uses a hybrid servo or sector servo, the other surfaces can be written by duplicating the servo bursts with a high bandwidth servo system of the file. Alternatively, the servo writing steps can be repeated for each of the other surfaces for providing head dependent pitch. Variable track pitch can be provided by selectively varying the predetermined value compared with the detected servo signal.
摘要翻译：提供一种用于在直接存取存储装置中写入伺服模式的自伺服写入文件和方法。第一伺服信息在第一次碰撞停止时被写入数据存储介质。当读取最后写入的伺服信息直到检测到的伺服信号等于预定值时，传感器头与写入的伺服信息偏移。然后根据检测到的等于预定值的伺服信号将伺服信息写入数据存储介质上。顺序重复移动和写入步骤，直到达到第二次碰撞停止。伺服信息可以使用四脉冲串伺服幅度模式或相位模式。伺服写入方式适用于许多不同的伺服选项。当文件使用混合伺服或扇区伺服时，其他表面可以通过用文件的高带宽伺服系统复制伺服脉冲串来写入。或者，可以针对每个其他表面重复伺服写入步骤，以提供与头部相关的音调。可以通过与检测到的伺服信号相比选择性地改变预定值来提供可变轨道间距。

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