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    • 44. 发明授权
    • Method and apparatus of dual stage servo control with dual control paths and decoupling feedback for track following in a hard disk drive
    • 具有双重控制路径的双级伺服控制方法和装置,以及硬盘驱动器中跟踪跟踪的去耦反馈
    • US07583468B2
    • 2009-09-01
    • US11270940
    • 2005-11-10
    • Vinod SharmaHyung Jai LeeDong Jun Lee
    • Vinod SharmaHyung Jai LeeDong Jun Lee
    • G11B5/596
    • G11B5/5552G11B5/596
    • A magnetic head follows a track in a hard disk drive as positioned by micro-actuator and voice coil motor. Embodiments operate two control paths. The micro-actuator control path generates a version of micro-actuator control signal stimulating the micro-actuator. The voice coil motor control path generates a version of voice coil control signal, amplified based upon tuning gain to stimulate voice coil motor. A decoupling feedback filter decouples these control paths, using the micro-actuator control signal version. Either control path may include a notch filter. A track following command, with PES removed, directs the micro-actuator control. The servo-controller may digitally support the invention, which may include the servo-controller program system. An implementation may be optimized within a hard disk drive, possibly as part of the manufacturing process. The hard disk drive is a product of that process.
    • 磁头跟随由微型致动器和音圈电机定位的硬盘驱动器中的轨道。 实施例操作两个控制路径。 微致动器控制路径产生刺激微致动器的微致动器控制信号的形式。 音圈电机控制路径产生一个版本的音圈控制信号,根据调谐增益放大,以刺激音圈电机。 去耦反馈滤波器使用微执行器控制信号版本解耦这些控制路径。 控制路径可以包括陷波滤波器。 一个跟踪命令,取消了PES,指示微执行器控制。 伺服控制器可以数字支持本发明,其可以包括伺服控制器程序系统。 可以在硬盘驱动器内优化实现,可能是制造过程的一部分。 硬盘驱动器是该进程的产物。
    • 45. 发明授权
    • Ischemia detection based on cardiac conduction time
    • 基于心脏传导时间的缺血检测
    • US07415307B2
    • 2008-08-19
    • US10284900
    • 2002-10-31
    • Vinod SharmaWalter H. Olson
    • Vinod SharmaWalter H. Olson
    • A61N1/00
    • A61B5/05A61B5/7203A61N1/362
    • Methods and process for detection of myocardial ischemia involve detection and analysis of changes in electrical conduction velocity within the heart to monitor changes in the condition of the cardiac muscle and indicate possible ischemia. Conduction velocity slows considerably when oxygen supply to the heart is reduced. Analysis of electrical conduction velocity can be used to verify the occurrence of myocardial ischemia in a more reliable manner. Changes in conduction velocity may be monitored based on conduction time between electrodes positioned in the left and right ventricles of the heart. The electrodes may be endocardial or epicardial electrodes. In general, the techniques may involve launching a stimulation waveform at one electrode and sensing a local cardiac depolarization at another electrode to assess conduction time.
    • 用于检测心肌缺血的方法和过程涉及检测和分析心脏内电传导速度的变化,以监测心肌状况的变化并指示可能的缺血。 当心脏供氧减少时,传导速度显着减慢。 电传导速度分析可以更可靠地验证心肌缺血的发生。 可以基于位于心脏左心室和右心室的电极之间的传导时间来监测传导速度的变化。 电极可以是心内膜或心外膜电极。 通常,这些技术可以涉及在一个电极处发射刺激波形并感测另一个电极处的局部心脏去极化以评估传导时间。
    • 47. 发明授权
    • Head gimbal assemblies for very low flying height heads with optional micro-actuators in a hard disk drive
    • 用于非常低飞行高度头的头万向节组件,在硬盘驱动器中具有可选的微执行器
    • US07336436B2
    • 2008-02-26
    • US10903730
    • 2004-07-29
    • Vinod SharmaHaesung KwonHyung Jai Lee
    • Vinod SharmaHaesung KwonHyung Jai Lee
    • G11B5/60G11B21/21
    • G11B5/4826G11B5/4853G11B5/486G11B5/5552G11B5/58Y10T29/49025
    • Head gimbal assembly (HGA) may include a piezo layer mechanically coupled with the slider or include a piezo element mechanically coupled by the flexure to the slider top near the read-write head. A bridge flex circuit is included, providing a piezo-control bundle to at least one piezo layer lead. A flex circuit assembly may further provide a piezo control bundle, shared with piezo control bundles for multiple read-write heads. HGA may include a micro-actuator to position read-write head near track on accessed, rotating disk surface. Flex circuit assembly may provide a source control bundle, shared with the micro-actuator control bundles for multiple read-write heads. When accessing, all micro-actuators perform same positioning action, insuring proper positioning of read-write head. This applies to both co-located and non co-located micro-actuators. Wire bundles may include one or two active signal wires. Voice coil actuators and hard disk drives, and their manufacture, are included.
    • 头部万向节组件(HGA)可以包括与滑块机械耦合的压电层,或者包括通过挠性机构耦合到读写头附近的滑块顶部的压电元件。 包括桥梁柔性电路,为至少一个压电层引线提供压电控制束。 柔性电路组件还可以提供与用于多个读写头的压电控制束共享的压电控制束。 HGA可以包括微致动器以将读写头靠近所访问的旋转盘表面上的轨迹。 Flex电路组件可以提供与多个读写头的微执行器控制束共享的源控制束。 当访问时,所有微执行器执行相同的定位动作,确保读写头的正确定位。 这适用于同位置和非共定位微致动器。 电线束可以包括一个或两个有源信号线。 包括音圈执行器和硬盘驱动器及其制造。