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1. 发明申请

US20130173995A1 METHOD AND APPARATUS FOR READING A DISC 有权
公开(公告)号：US20130173995A1
公开(公告)日：2013-07-04
申请号：US13722007
申请日：2012-12-20
申请人： Marvell World Trade Ltd.
发明人： Mats OBERG , Jin XIE
IPC分类号： H03M13/05
CPC分类号： H03M13/29 , G06F11/1076 , G11B20/1813 , G11B20/1833 , H03M13/05
摘要： Aspects of the disclosure provide a circuit that includes a decoder, an error checking module, and a controller. The decoder is configured to receive codewords, and decode the codewords based on an error correcting code. The error checking module is configured to error-check sectors using an error detecting code in the sectors. Each sector is formed of a plurality of decoded codewords. The controller is configured to store in a memory, when the error checking fails for at least one sector, the decoded codewords and corresponding flags indicative of pass or fail of the decoding of the codewords.

2. 发明申请

US20150092289A1 GENERATING POSITION ERROR SIGNAL BASED ON DATA TRACKS FOR MAGNETIC DATA STORAGE 有权
标题翻译：基于用于磁数据存储的数据跟踪产生位置错误信号
公开(公告)号：US20150092289A1
公开(公告)日：2015-04-02
申请号：US14499819
申请日：2014-09-29
申请人： Marvell World Trade Ltd.
发明人： Mats OBERG , Gregory BURD
IPC分类号： G11B20/10 , G11B5/596
CPC分类号： G11B5/59622 , G11B5/5547 , G11B5/59611 , G11B5/59627 , G11B5/5965 , G11B20/10212 , G11B20/10305
摘要： A hard disk drive circuit includes first and second inter-track interference detection modules. The first inter-track interference detection module is configured to generate a first measured inter-track interference value based on a first read signal from a first read sensor positioned over a magnetic medium. The second inter-track interference detection module is configured to generate a second measured inter-track interference value based on a second read signal from a second read sensor positioned over the magnetic medium. A position error signal generation module is configured to generate a position error signal based on the first measured inter-track interference value and the second measured inter-track interference value. An arm control module is configured to control rotation of an arm in response to the position error signal. The first read sensor and the second read sensor are located at a distal end of the arm.
摘要翻译：硬盘驱动电路包括第一和第二轨道间干扰检测模块。第一轨道间干扰检测模块被配置为基于位于磁介质上的第一读取传感器的第一读取信号产生第一测量的轨道间干扰值。第二轨道间干扰检测模块被配置为基于位于磁介质上的第二读取传感器的第二读取信号产生第二测量的轨道间干扰值。位置误差信号生成模块被配置为基于第一测量的轨道间干扰值和第二测量的轨道间干扰值来产生位置误差信号。臂控制模块被配置为响应于位置误差信号来控制臂的旋转。第一读取传感器和第二读取传感器位于臂的远端。

3. 发明申请

US20150155887A1 METHOD AND APPARATUS FOR READING A DISC 审中-公开
标题翻译：读取光盘的方法和装置
公开(公告)号：US20150155887A1
公开(公告)日：2015-06-04
申请号：US14617070
申请日：2015-02-09
申请人： MARVELL WORLD TRADE LTD.
发明人： Mats OBERG , Jin XIE
IPC分类号： H03M13/29 , G06F11/10
CPC分类号： H03M13/29 , G06F11/1076 , G11B20/1813 , G11B20/1833 , H03M13/05
摘要： Aspects of the disclosure provide a circuit that includes a decoder, an error checking module, and a controller. The decoder is configured to receive codewords, and decode the codewords based on an error correcting code. The error checking module is configured to error-check sectors using an error detecting code in the sectors. Each sector is formed of a plurality of decoded codewords. The controller is configured to store in a memory, when the error checking fails for at least one sector, the decoded codewords and corresponding flags indicative of pass or fail of the decoding of the codewords.
摘要翻译：本公开的方面提供了包括解码器，错误检查模块和控制器的电路。解码器被配置为接收码字，并且基于纠错码解码码字。错误检查模块被配置为使用扇区中的错误检测代码错误检查扇区。每个扇区由多个解码码字组成。控制器被配置为在至少一个扇区的错误检查失败时存储在存储器中，解码的码字和指示码字的解码的通过或失败的相应标志。

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