公开(公告)号：US6005059A

公开(公告)日：1999-12-21

申请号：US996459

申请日：1997-12-23

申请人： Christopher Edward Scott ,  John C. Morris ,  James Rodney Bradley

发明人： Christopher Edward Scott ,  John C. Morris ,  James Rodney Bradley

IPC分类号： C08L67/02 ,  C08L69/00

CPC分类号： C08L67/02 ,  C08L69/00

摘要： A blend of polycarbonates of dihydroxydiphenyl cycloalkanes and optionally 4,4'-isopropylidenediphenol with polyesters from terephthalic acid, isophthalic acid, neopentyl glycol and 2,2,4,4-tetramethyl-1,3-cyclobutanediol, having the advantage of being colorless and providing an unexpected amount of impact strength, hardness and heat resistance. The polymer blends are especially suitable for the manufacture of clear molded articles, fibers, sheeting, and film.

摘要翻译： 二羟基二苯基环烷烃的聚碳酸酯和任选的4,4'-异丙基二苯酚与来自对苯二甲酸，间苯二甲酸，新戊二醇和2,2,4,4-四甲基-1,3-环丁二醇的聚酯的共混物，其优点是无色和 提供了突出的冲击强度，硬度和耐热性。 聚合物共混物特别适用于制造透明模制品，纤维，片材和薄膜。

公开(公告)号：US4904747A

公开(公告)日：1990-02-27

申请号：US288896

申请日：1988-12-23

申请人： John C. Morris ,  Winston J. Jackson

发明人： John C. Morris ,  Winston J. Jackson

IPC分类号： C08J5/18 ,  C08L67/00 ,  C08L67/02 ,  C08L69/00 ,  D01F6/92

CPC分类号： C08L67/02 ,  C08L69/00

摘要： Disclosed are compositions of matter characterized by having improved tensile strength comprising a blend of(a) about 30-95 weight % of a polyester containing repeating units from biphenyldicarboxylic acid 1,6-hexanediol, and(b) about 70-5 weight % of a polycarbonate of 4,4'-isopropylidenediphenol.

公开(公告)号：US4525504A

公开(公告)日：1985-06-25

申请号：US544034

申请日：1983-10-24

申请人： John C. Morris ,  Joseph S. Zannucci

发明人： John C. Morris ,  Joseph S. Zannucci

IPC分类号： C08G63/199 ,  C08K5/00 ,  C08K5/3435 ,  C08K5/3462 ,  C08L33/20 ,  C08K5/34 ,  C08K5/07 ,  C08K5/10

CPC分类号： C08K5/3435 ,  C08G63/199 ,  C08K5/005 ,  C08K5/3462 ,  C08L33/20

摘要： Disclosed are stabilized polyester compositions having significantly improved weatherability, said polyesters consisting of homopolyesters derived from a dicarboxylic acid component wherein at least a major portion of which is 1,4-cyclohexanedicarboxylic acid (or ester) having a trans isomer content of at least 65% and a glycol component wherein at least a major portion of which is 2,2,4,4-tetramethyl-1,3-cyclobutanediol and copolyesters thereof with modifying aliphatic glycols and/or aliphatic dicarboxylic acids, said polyesters being stabilized with the combination of at least one ultraviolet light stabilizing compound compatible with said polyester and at least one hindered amine light stabilizer having the formulae ##STR1## the groups shown as R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently selected from various substituents.

摘要翻译： 公开了具有显着改善的耐候性的稳定的聚酯组合物，所述聚酯由衍生自二羧酸组分的均聚酯组成，其中至少大部分是具有至少65％的反式异构体含量的1,4-环己烷二羧酸（或酯） 和二醇组分，其中至少大部分为2,2,4,4-四甲基-1,3-环丁二醇及其与改性脂族二醇和/或脂族二羧酸的共聚酯，所述聚酯通过 与所述聚酯相容的至少一种紫外线稳定化合物和具有式I或II的至少一种受阻胺光稳定剂，所示的R1，R2，R3和R4所示的基团各自独立地选自各种取代基。

公开(公告)号：US07038876B2

公开(公告)日：2006-05-02

申请号：US10353602

申请日：2003-01-29

申请人： John C. Morris

发明人： John C. Morris

IPC分类号： G11B5/596

CPC分类号： G11B5/5552

摘要： A control system for a data storage device including a constraint or weight to control stroke utilization and/or closed loop response of the control system. In particular, in one embodiment described, the weight or constraint is used to limit stroke utilization for a microactuator having a smaller stroke than a primary actuator. As described, the constraint or weight is used in conjunction with a mathematical synthesis to synthesize a controller to optimize system performance.

公开(公告)号：US06744589B2

公开(公告)日：2004-06-01

申请号：US09847758

申请日：2001-05-02

申请人： John C. Morris ,  Reed D. Hanson

发明人： John C. Morris ,  Reed D. Hanson

IPC分类号： G11B5596

CPC分类号： G11B5/5552

摘要： A disc drive including a rotatable data track, a dual-stage actuator with a primary actuator motor supporting an actuator arm, a read/write head supported by the actuator arm and communicating with a secondary actuator motor, and steps for controlling range of motion of the secondary actuator motor. The controlling steps include supplying and sustaining a bias signal to a single-sided unipolar device driver that then apply a bias voltage the secondary actuator motor to induce the secondary actuator motor to expand substantially one half of its expansion capabilities. And, confining correction signals provided by a control circuit of the disc drive, used in correcting mechanical position of the secondary actuator motor, to a voltage ranging substantially between a positive “+” and negative “−” voltage substantially equal to the applied bias voltage.

摘要翻译： 包括可旋转数据轨道的磁盘驱动器，具有支持致动器臂的主执行器电动机的双级致动器，由致动器臂支撑并与辅助致动器电动机连通的读/写头以及用于控制运动范围的步骤 二次执行器电机。 控制步骤包括向单面单极器件驱动器提供和维持偏置信号，然后施加偏置电压次级致动器电动机以使二次致动器电动机基本上扩大其扩展能力的一半。 并且，将用于校正次级致动器电动机的机械位置的盘驱动器的控制电路提供的校正信号限制在基本上等于所施加的偏置电压的正“+”和“负”电压之间的电压 。

公开(公告)号：US06606215B1

公开(公告)日：2003-08-12

申请号：US09370823

申请日：1999-08-09

申请人： Kyle K. Eddy ,  John C. Morris

发明人： Kyle K. Eddy ,  John C. Morris

IPC分类号： G11B5596

CPC分类号： G11B5/59627 ,  G11B21/10

摘要： A disc drive having a servo loop for positioning a head over a disc includes a servo controller which generates a servo control signal in response to a received position error signal. An actuator, coupled to the servo controller, moves the head in response to the servo control signal. A sensor, located in the head, senses servo information located on the disc and produces a servo signal therefrom. The servo signal is combined with a reference signal to produce the position error signal. A compensation storage device stores decimated compensation values and a servo compensator expands the decimated compensated values and injects the expanded compensation values into the servo loop.

摘要翻译： 具有用于将盘头定位在盘上的伺服回路的盘驱动器包括伺服控制器，该伺服控制器响应于所接收的位置误差信号产生伺服控制信号。 耦合到伺服控制器的致动器响应伺服控制信号移动头部。 位于头部的传感器感测位于盘上的伺服信息，并产生伺服信号。 伺服信号与参考信号组合以产生位置误差信号。 补偿存储装置存储抽取的补偿值，并且伺服补偿器扩展抽取的补偿值，并将扩展的补偿值注入伺服循环。

公开(公告)号：US06490119B1

公开(公告)日：2002-12-03

申请号：US09473264

申请日：1999-12-27

申请人： Samir Mittal ,  John C. Morris

发明人： Samir Mittal ,  John C. Morris

IPC分类号： G11B5596

CPC分类号： G11B5/5552 ,  G11B5/596

摘要： A method and apparatus are provided for positioning a head over a disc in a disc drive while maintaining servo loop stability. The apparatus includes an actuator-head assembly having a large scale actuator and a micro-actuator that are both able to move the head over the disc. An anti-windup compensation component detects when a micro-actuator controller is producing a micro-actuator control value that will saturate the micro-actuator. Using the micro-actuator control value, the anti-windup compensation component generates a saturation tracking error signal. A summing component then combines a position value that the head generates based on its position over the disc with the saturation tracking error signal to form a position error value that masks the saturation of the micro-actuator.

摘要翻译： 提供了一种方法和装置，用于将磁头定位在磁盘驱动器中的磁盘上，同时保持伺服环路的稳定性。 该装置包括具有能够将磁头移动到磁盘上的大型致动器和微致动器的致动器头组件。 防饱和补偿部件检测微致动器控制器何时产生将使微致动器饱和的微致动器控制值。 使用微执行器控制值，防饱和​​补偿分量产生饱和跟踪误差信号。 然后，求和分量基于其在盘上的位置产生的位置值与饱和度跟踪误差信号组合，以形成屏蔽微致动器的饱和度的位置误差值。

公开(公告)号：US06449116B2

公开(公告)日：2002-09-10

申请号：US09781363

申请日：2001-02-12

申请人： John C. Morris ,  Thomas C. Zirps

发明人： John C. Morris ,  Thomas C. Zirps

IPC分类号： G11B5596

CPC分类号： G11B5/59627 ,  G11B5/59605 ,  G11B21/106

摘要： A method and apparatus for compensating for repeatable run-out errors in a disc drive is provided in which transfer function values for a servo loop in the disc drive are first determined. A sequence of repeatable run-out values for a portion of the disc drive is then determined. A transform is applied to the sequence of repeatable run-out values to obtain frequency-domain repeatable run-out values. Each frequency-domain repeatable run-out value is divided by a respective transfer function value to produce a sequence of frequency-domain compensation values which are then stored. An inverse transform is applied to the frequency-domain compensation values to obtain a sequence of time-domain compensation values. The sequence of time-domain compensation values is inserted into the servo loop.

摘要翻译： 提供了用于补偿盘驱动器中可重复的跳动误差的方法和装置，其中首先确定盘驱动器中的伺服环路的传递函数值。 然后确定盘驱动器的一部分的可重复耗尽值的序列。 将变换应用于可重复耗尽值的序列，以获得频域可重复的耗尽值。 每个频域可重复跳出值被相应的传递函数值除以产生频域补偿值序列，然后存储该序列。 对频域补偿值进行逆变换，以获得时域补偿值的序列。 时域补偿值序列插入到伺服回路中。

公开(公告)号：US06341048B1

公开(公告)日：2002-01-22

申请号：US09488377

申请日：2000-01-20

申请人： John C. Morris ,  Dustin M. Cvancara

发明人： John C. Morris ,  Dustin M. Cvancara

IPC分类号： G11B2110

CPC分类号： G11B5/5965 ,  G11B5/59611

摘要： A method and apparatus are provided for positioning a head based on a control signal and a cancellation signal. In the method and apparatus, a sensor located in the disc drive is capable of generating sensor data samples at a sensor data rate that is different from a servo data rate. A data enlarger inserts additional data samples between the sensor data samples to produce enlarged data that is filtered to produce filtered data, which is decimated to form decimated sensor data at the servo data rate. A cancellation component converts the decimated sensor data into a cancellation signal that may be combined with a control signal to control the actuator. A sensor chip is also provided that includes a sensing element and a sigma-delta circuit that cooperate to generate sensor samples at a sensor data rate and a buffer that stores sensor samples at the sensor data rate.

摘要翻译： 提供了一种基于控制信号和消除信号来定位头的方法和装置。 在该方法和装置中，位于盘驱动器中的传感器能​​够以不同于伺服数据速率的传感器数据速率生成传感器数据采样。 数据放大器在传感器数据样本之间插入附加数据样本，以产生被过滤以产生滤波数据的放大数据，其被抽取以以伺服数据速率形成抽取的传感器数据。 取消组件将抽取的传感器数据转换成可与控制信号组合的消除信号，以控制致动器。 还提供了一种传感器芯片，其包括感测元件和Σ-Δ电路，其协作以传感器数据速率生成传感器样本，以及以传感器数据速率存储传感器样本的缓冲器。

公开(公告)号：US6011124A

公开(公告)日：2000-01-04

申请号：US997433

申请日：1997-12-23

申请人： Christopher Edward Scott ,  John C. Morris ,  James Rodney Bradley

发明人： Christopher Edward Scott ,  John C. Morris ,  James Rodney Bradley

IPC分类号： C08G63/199 ,  C08L67/02 ,  C08L69/00 ,  C08G63/40

CPC分类号： C08L67/02 ,  C08L69/00 ,  C08G63/199

摘要： Disclosed are clear blends comprising:(A) from 1 to 99 percent by weight of a polycarbonate comprising a diol component comprising from 90 to 100 mol percent 4,4'-isopropylidenediphenol units and from 0 to 10 mol percent modifying diol units having 2 to 16 carbons, wherein the total mol percent of diol units is equal to 100 mol percent; and(B) from 1 to 99 percent by weight of a polyester comprising(a) a dicarboxylic acid component comprising from 80 to 100 mol percent dicarboxylic acid units selected from the group consisting of terephthalic acid units, isophthalic acid units, and mixtures thereof; and from 0 to 20 mol percent modifying dicarboxylic acid units having about 2 to 20 carbons, wherein the total mol percent of dicarboxylic acid units is equal to 100 mol percent; and(b) a glycol component comprising from 30 to 99 mol percent 2,2,4,4-tetramethyl-1,3-cyclobutanediol units, from 1 to 70 mol percent ethylene glycol units, and from 0 to 10 mol percent modifying glycol units having from 3 to 16 carbons, wherein the total mol percent of glycol units is equal to 100 mol percent;wherein the total units of said polyester is equal to 200 mol percent;wherein said blend is clear and the total weight percent of said polycarbonate (A) and said polyester (B) is equal to 100 weight percent.

摘要翻译： 公开了一种透明共混物，其包含：（A）1至99重量％的包含二醇组分的聚碳酸酯，其包含90至100摩尔％的4,4'-异丙基二苯酚单元和0至10摩尔％的修饰二醇单元，其具有2至 16个碳，其中二醇单元的总摩尔百分比等于100摩尔％; 和（B）1〜99重量％的聚酯，其包含（a）包含80至100摩尔％的选自对苯二甲酸单元，间苯二甲酸单元及其混合物的二羧酸单元的二羧酸组分; 和0至20摩尔％改性具有约2至20个碳的二羧酸单元，其中二羧酸单元的总摩尔百分数等于100摩尔％; 和（b）二醇组分，其包含30至99mol％的2,2,4,4-四甲基-1,3-环丁二醇单元，1至70mol％的乙二醇单元和0至10mol％的改性二醇 具有3至16个碳的单元，其中二醇单元的总摩尔百分比等于100摩尔％; 其中所述聚酯的总单元等于200摩尔％; 其中所述共混物是透明的，并且所述聚碳酸酯（A）和所述聚酯（B）的总重量百分比等于100重量％。