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31. 发明授权

US07995305B1 Calibrating voice coil motors 有权
标题翻译：校准音圈电机
公开(公告)号：US07995305B1
公开(公告)日：2011-08-09
申请号：US12192973
申请日：2008-08-15
申请人： Luan Ton-That , David Rutherford
发明人： Luan Ton-That , David Rutherford
IPC分类号： G11B5/55
CPC分类号： G11B5/5534
摘要： Methods, systems, and apparatus, including computer program products, are described for calibrating voice coil motors. In one aspect, a method is provided that includes seeking toward an outer diameter of a machine readable medium from a target servo track to a blank portion of the machine readable medium. A radial velocity of an actuator is determined after accelerating the actuator to a target radial velocity. The radial velocity is compared to the target radial velocity, and a current, that is used to controllably modify the radial velocity of the actuator if the radial velocity is different from the target radial velocity, is calibrated.
摘要翻译：描述了用于校准音圈电机的方法，系统和装置，包括计算机程序产品。在一个方面，提供了一种方法，其包括从目标伺服轨迹到机器可读介质的空白部分寻求机器可读介质的外径。在将致动器加速到目标径向速度之后确定致动器的径向速度。将径向速度与目标径向速度进行比较，并且如果径向速度与目标径向速度不同，则用于可控地修改致动器的径向速度的电流被校准。

32. 发明申请

US20110190638A1 Illumination Apparatus for Use in Examining a Body of Living Tissues 审中-公开
标题翻译：用于检查活体组织的照明装置
公开(公告)号：US20110190638A1
公开(公告)日：2011-08-04
申请号：US12997328
申请日：2009-06-12
申请人： Ken Devlin , Andy Mcdaid , Craig Whitehill , Robin Sayer , David Rutherford
发明人： Ken Devlin , Andy Mcdaid , Craig Whitehill , Robin Sayer , David Rutherford
IPC分类号： A61B6/00
CPC分类号： A61B5/4387 , A61B5/0091 , A61B5/4312
摘要： An illumination apparatus for use in examining a body of living tissues, the apparatus comprising a head for contacting the body of living tissues, a light source mounted in the head for illuminating the tissues, and an annular switch disposed around the light source, the annular switch being adapted automatically to permit illumination of the light source at an examination intensity when the head contacts the body at least around an annular contact area on the head corresponding to the annular switch.
摘要翻译：一种用于检查活组织体的照明装置，该装置包括用于接触活组织体的头部，安装在头部中用于照射组织的光源和设置在光源周围的环形开关，所述环形开关被自动适应，以允许当头部至少围绕对应于环形开关的头部上的环形接触区域接触身体时以检查强度照射光源。

33. 发明授权

US07773335B1 Calibrating servos 有权
标题翻译：校准伺服
公开(公告)号：US07773335B1
公开(公告)日：2010-08-10
申请号：US12192981
申请日：2008-08-15
申请人： Jason Adler , David Rutherford , Man Cheung , Perry Neos , Luan Ton-That
发明人： Jason Adler , David Rutherford , Man Cheung , Perry Neos , Luan Ton-That
IPC分类号： G11B21/02 , G11B5/596 , G11B5/09
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666 , G11B2020/1281 , G11B2220/2516
摘要： Methods, systems, and apparatus, including computer program products, are described for calibrating servos, and in some implementations for calibrating spiral servos for use in self-servo-write processes. In one aspect, a method is provided that includes determining a measured slope of a spiral, and calibrating radial spacing between servo tracks using the measured slope and a target slope.
摘要翻译：描述了包括计算机程序产品在内的方法，系统和装置，用于校准伺服系统，并且在一些实施例中用于校准用于自伺服写入过程的螺旋伺服。在一个方面，提供了一种方法，其包括确定螺旋的测量斜率，以及使用所测量的斜率和目标斜率校准伺服轨道之间的径向间距。

34. 发明授权

US07737793B1 Calibrating control loops 有权
标题翻译：校准控制回路
公开(公告)号：US07737793B1
公开(公告)日：2010-06-15
申请号：US12239568
申请日：2008-09-26
申请人： Edward Ying , Pantas Sutardja , David Rutherford
发明人： Edward Ying , Pantas Sutardja , David Rutherford
IPC分类号： G11B5/09 , H03L7/085
CPC分类号： G11B5/59688 , G11B5/09 , G11B5/59616 , G11B5/59666 , H03L7/08
摘要： Methods, systems, and apparatus, including computer program products, are described for calibrating control loops, specifically phase-locked loops. In one aspect, an apparatus is provided that includes an oscillator model that generates a predicted phase based on an input, a first averaging submodule that generates an average predicted phase over a predetermined number of samples, and a first summing submodule that receives a first corrected phase error and generates a predicted repetitive phase disturbance using the first corrected phase error, the predicted phase, and the average predicted phase.
摘要翻译：描述了包括计算机程序产品在内的方法，系统和装置，用于校准控制回路，特别是锁相环。一方面，提供了一种装置，其包括基于输入生成预测相位的振荡器模型，产生预定数量样本的平均预测相位的第一平均子模块和接收第一校正后的第一求和子模块相位误差，并使用第一校正相位误差，预测相位和平均预测相位产生预测的重复相位干扰。

35. 发明授权

US07440224B2 Disk drive servo 有权
标题翻译：磁盘驱动伺服
公开(公告)号：US07440224B2
公开(公告)日：2008-10-21
申请号：US11338359
申请日：2006-01-23
申请人： Richard M. Ehrlich , David Rutherford
发明人： Richard M. Ehrlich , David Rutherford
IPC分类号： G11B5/596 , G11B21/02
CPC分类号： G11B5/59688
摘要： A disk drive includes a disk having a first servo burst written with advancing phase as a radial distance on the disk increases, and a second servo burst written with decreasing phase as a radial distance on the disk increases, and a transducing head, and a read channel. The disk drive also includes an element for shifting the phase of the signal produced by the first burst pattern with respect to the signal produced by the second burst pattern by an amount sufficient to substantially cancel distortion in a signal produced by the first servo burst with distortion in a signal produced by the second servo burst when the signal from the first servo burst is added to the signal from the second servo burst.
摘要翻译：磁盘驱动器包括具有当前进相位写入的第一伺服脉冲串的盘，其中盘上的径向距离增加，并且随着盘上的径向距离而以递减相位写入的第二伺服脉冲串增加，并且传感头和读取渠道。磁盘驱动器还包括用于将由第一突发模式产生的信号的相位相对于由第二突发模式产生的信号相位相移的元素，该量足以基本上消除由具有失真的第一伺服脉冲串产生的信号中的失真当来自第一伺服脉冲串的信号被加到来自第二伺服脉冲串的信号时，由第二伺服脉冲串产生的信号。

36. 发明申请

US20070195450A1 Method for improved insitu spiral writing 有权
标题翻译：改进本体螺旋写作的方法
公开(公告)号：US20070195450A1
公开(公告)日：2007-08-23
申请号：US11541977
申请日：2006-10-02
申请人： David Rutherford
发明人： David Rutherford
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666
摘要： A system includes a self-servo-write (SSW) module and a control module. The SSW module generates servo signals and a control signal. The control module generates a first current to bias an actuator arm against a spring when the control signal is received and discontinues the first current to release the spring and accelerate the actuator arm when the SSW module generates the servo signals.
摘要翻译：系统包括自伺服写（SSW）模块和控制模块。 SSW模块产生伺服信号和控制信号。当控制信号被接收时，控制模块产生第一电流以使致动器臂抵抗弹簧偏置，并且当SSW模块产生伺服信号时，中断第一电流以释放弹簧并加速致动器臂。

37. 发明申请

US20060215306A1 Systems and methods for multipass servowriting with a null burst pattern 失效
标题翻译：具有零脉冲串模式的多通道伺服驱动的系统和方法
公开(公告)号：US20060215306A1
公开(公告)日：2006-09-28
申请号：US11090608
申请日：2005-03-25
申请人： Richard Ehrlich , David Rutherford
发明人： Richard Ehrlich , David Rutherford
IPC分类号： G11B21/02 , G11B5/596
CPC分类号： G11B5/59655
摘要： Embodiments of the present invention enables the trimming and writing of servo bursts in a null burst servo pattern as multiple portions in multiple passes while still demodulating each of the servo bursts as a single burst to obtain PES. Alternatively, the servo bursts can be trimmed and written using different currents in different passes respectively so that a gap can be created in the radial direction between the servo bursts. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.
摘要翻译：本发明的实施例能够将零脉冲串伺服模式中的伺服脉冲串的修整和写入作为多遍的多个部分，同时将每个伺服脉冲串解调为单个脉冲串以获得PES。或者，可以分别使用不同电流中的不同电流来修剪和写入伺服脉冲串，使得可以在伺服脉冲串之间的径向上产生间隙。本说明书不是对本发明的完整描述或限制本发明的范围。本发明的其它特征，方面和目的可以通过对说明书，附图和权利要求的评述来获得。

38. 发明授权

US3225012A Carbohydrate derived polyamides 失效
标题翻译：碳水化合物衍生的聚酰胺
公开(公告)号：US3225012A
公开(公告)日：1965-12-21
申请号：US22516862
申请日：1962-09-20
申请人： BLACK WILLIAM A P , DEWAR ERIC T , DAVID RUTHERFORD
发明人： BLACK WILLIAM A P , DEWAR ERIC T , DAVID RUTHERFORD
IPC分类号： C07D493/04 , C07H9/04 , C08B37/00 , C08F16/12 , C08F20/30 , C08G69/26
CPC分类号： C07D493/04 , C07H9/04 , C08B37/00 , C08F16/12 , C08F20/30 , C08G69/26

39. 发明授权

US08284510B1 Detecting and recovering timing slips in a self servo write (SSW) system 有权
标题翻译：在自动伺服写入（SSW）系统中检测和恢复时序
公开(公告)号：US08284510B1
公开(公告)日：2012-10-09
申请号：US12539474
申请日：2009-08-11
申请人： David Rutherford , Man Cheung
发明人： David Rutherford , Man Cheung
IPC分类号： G11B5/09 , G11B21/02
CPC分类号： G11B5/59666
摘要： Embodiments of the present disclosure provide a method including recording time stamps for a repeating characteristic of a spindle back electromotive force (BEMF) signal and comparing one or more of the recorded time stamps for the repeating characteristic of the spindle BEMF signal with an expected value for the one or more recorded time stamps to detect a timing error associated with writing a servo pattern on a machine readable medium of a self-servo write (SSW) system. Other embodiments may be described and/or claimed.
摘要翻译：本公开的实施例提供了一种方法，包括记录用于主轴反电动势（BEMF）信号的重复特性的时间戳，并将用于主轴BEMF信号的重复特性的记录时间戳的一个或多个与用于所述一个或多个记录的时间标记用于检测与自动伺服写入（SSW）系统的机器可读介质上写入伺服模式相关联的定时误差。可以描述和/或要求保护其他实施例。

40. 发明申请

US20090091855A1 METHOD FOR IMPROVED INSITU SPIRAL WRITING 有权
标题翻译：改进的椎弓根螺钉书写方法
公开(公告)号：US20090091855A1
公开(公告)日：2009-04-09
申请号：US12336771
申请日：2008-12-17
申请人： David Rutherford
发明人： David Rutherford
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666
摘要： A system includes a first current generator generating a first current to bias an actuator arm against a spring when a control signal is received and discontinues said first current to release said spring and accelerate said actuator arm when servo signals are generated. A second current generator generates a second current biasing said actuator arm away from said spring when said first current is discontinued.
摘要翻译：一种系统包括第一电流发生器，当接收到控制信号时，产生第一电流以使致动器臂抵抗弹簧偏置，并且中断所述第一电流以释放所述弹簧并且在产生伺服信号时加速所述致动器臂。当所述第一电流停止时，第二电流发生器产生偏置所述致动器臂远离所述弹簧的第二电流。

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