公开(公告)号：US09001446B1

公开(公告)日：2015-04-07

申请号：US14194069

申请日：2014-02-28

申请人： LSI Corporation

发明人： Bruce A. Wilson ,  Richard Rauschmayer ,  Peter J. Windler ,  Jefferson E. Singleton ,  Shaohua Yang ,  Jeffrey P. Grundvig

IPC分类号： G11B5/09 ,  G11B5/596 ,  G11B20/10

CPC分类号： G11B5/59616 ,  G11B5/09 ,  G11B19/00 ,  G11B20/10037 ,  G11B2005/0008

摘要： A system and method for power management in a hard disk drive (HDD) assembly incorporating two or more read sensors includes directing a read/write head to follow a track; depowering one or more read sensors and readpath circuits associated with the read sensors; reading an analog readback signal through the first read sensor; processing the signal through an analog front-end to generate an input signal; sampling the input signal through an analog to digital converter at a first frequency to generate a first sampling signal; sampling the input signal through a second analog to digital converter at a second frequency to generate a second sampling signal; and generating a digital output signal from either or both sampling signals at a third sampling frequency through a digital signal processor. The method may additionally comprise adjusting a sampling frequency when power level reaches a threshold.

摘要翻译： 包含两个或更多个读取传感器的硬盘驱动器（HDD）组件中的电源管理的系统和方法包括引导读/写头跟随轨道; 降低与读取的传感器相关联的一个或多个读取传感器和读取路径电路; 通过第一个读取传感器读取模拟回读信号; 通过模拟前端处理信号以产生输入信号; 以第一频率通过模数转换器对输入信号进行采样，以产生第一采样信号; 以第二频率通过第二模数转换器对输入信号进行采样，以产生第二采样信号; 以及通过数字信号处理器以第三采样频率从一个或两个采样信号产生数字输出信号。 该方法还可以包括当功率电平达到阈值时调整采样频率。