专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06449110B1 Optimizing operation of a disk storage system by increasing the gain of a non-linear transducer and correcting the non-linear distortions using a non-linear correction circuit 失效
标题翻译：通过增加非线性传感器的增益并使用非线性校正电路校正非线性失真来优化磁盘存储系统的操作
公开(公告)号：US06449110B1
公开(公告)日：2002-09-10
申请号：US09244082
申请日：1999-02-03
申请人： Ronald D. DeGroat , William G. Bliss
发明人： Ronald D. DeGroat , William G. Bliss
IPC分类号： G11B509
CPC分类号： G11B20/10055 , G11B5/012 , G11B5/09 , G11B20/10009 , G11B20/10037
摘要： A sampled amplitude read channel is disclosed for magnetic disk storage systems utilizing a read head exhibiting a non-linear response such as a magneto-resistive (MR) read head. A sensor of the read head is adjusted to operate in a region of its response that provides optimum gain even though it may be a region of higher non-linearity. To compensate for the non-linearity introduced into the read signal, the read channel further comprises an adaptive non-linear correction circuit that is adaptively tuned by a least-mean-square (LMS) adaptation circuit. The analog read signal is sampled and the discrete time samples equalized into a desired partial response prior to sequence detection. The non-linear correction circuit is inserted into the read path prior to the sequence detector in order to attenuate the non-linear distortions that would otherwise degrade the performance of the sequence detector. A channel quality circuit integrated into the read channel measures and accumulates a predetermined error metric, such as a squared sample error or a bit error, that is used to optimize the adjustment of the sensor in the read head. By iteratively adjusting the sensor and adaptively tuning the non-linear correction circuit, an optimum sensor setting that minimizes the accumulated error metric is determined, saved, and then used as the operating setting during normal operation of the magnetic disk storage system.
摘要翻译：公开了采用磁阻（MR）读头的非线性响应的读头的磁盘存储系统的采样振幅读通道。读头的传感器被调整以在其响应的区域中操作，其提供最佳增益，即使其可以是较高非线性的区域。为了补偿引入读信号的非线性，读通道还包括由最小均方（LMS）适配电路自适应调谐的自适应非线性校正电路。模拟读取信号被采样，并且离散时间样本在序列检测之前被均衡为期望的部分响应。非线性校正电路在序列检测器之前插入到读取路径中，以便衰减否则会降低序列检测器的性能的非线性失真。集成到读通道中的通道质量电路测量并累积预定误差度量，例如用于优化读头中的传感器的调整的采样误差或位错误。通过迭代地调整传感器并自适应地调谐非线性校正电路，确定，保存最小化累积误差度量的最佳传感器设置，然后在磁盘存储系统的正常操作期间用作操作设置。

IPRDB

热门服务

关于我们

友情链接

联系方式