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1. 发明授权

US4724370A Servo system for a disk drive 失效
标题翻译：磁盘驱动器的伺服系统
公开(公告)号：US4724370A
公开(公告)日：1988-02-09
申请号：US918501
申请日：1986-10-14
申请人： Alex Moraru , Kechen Cheng
发明人： Alex Moraru , Kechen Cheng
IPC分类号： G11B21/08 , G11B5/596 , G11B21/10 , G05B13/00
CPC分类号： G11B5/59688
摘要： A servo system intermittently samples servo sectors from a data disk to obtain the position of the read/write head and to maintain an on-track alignment. A glass scale measures the movement of the transducer head and provides a velocity signal. An integrator integrates the velocity signal to produce a fill-in position signal. This fill-in position signal is added to the position signal from the last sampled servo sector to provide a position compensator with position information when the head is in between servo sectors. An on-track detector circuit and a damping circuit heavily damp movement of the transducer head when the head is in the on-track position. A gain circuit modifies the signal going to the position compensator in order to compensate for misclamping and imperfections in the data disk. The position compensator includes a tilt circuit which compensates for tilting of the disk drive from a non-horizontal position.

2. 发明申请

US20060268452A1 APPARATUS AND METHOD FOR DISK-STACK ASSEMBLY AND TRANSFER WITH TA-C COATING TO REDUCE METALLIC PARTICULATES 审中-公开
标题翻译：用于堆叠组装和转移TA-C涂层以减少金属颗粒的装置和方法
公开(公告)号：US20060268452A1
公开(公告)日：2006-11-30
申请号：US11420471
申请日：2006-05-25
申请人： Poh Whye Chan , Kien Lai , Jui-Kiat Goh , Alex Moraru
发明人： Poh Whye Chan , Kien Lai , Jui-Kiat Goh , Alex Moraru
IPC分类号： G11B17/08
CPC分类号： G11B25/043 , G11B5/59633 , G11B17/038
摘要： The present invention provides a system for assembling a disk-stack with multiple disks and spacers and transferring the assembled disk-stack, a media servowriter that comprises a fixed hub for receiving the assembled disk-stack, and a method that comprises assembling a disk-stack with multiple disks and spacers off-line and transferring the assembled disk-stack to the fixed hub of the media servowriter.
摘要翻译：本发明提供了一种用于组装具有多个盘和间隔件并且传送组装的盘堆的盘堆叠的系统，包括用于接收组装的盘堆的固定轮毂的介质伺服驱动器，以及一种方法，将多个磁盘和间隔件离线堆叠，并将组装的磁盘堆栈传输到介质伺服驱动器的固定集线器。

3. 发明授权

US06977791B2 Media servowriting system 失效
标题翻译：媒体伺服系统
公开(公告)号：US06977791B2
公开(公告)日：2005-12-20
申请号：US10395051
申请日：2003-03-22
申请人： Jun Zhu , Alex Moraru , Teodor Zanetti , Franklin Tao , Dan L. Kilmer , Harald Hess , Tom Carr , Matt Bellis , Gustavo A. Pinto , Patrick Rodney Lee
发明人： Jun Zhu , Alex Moraru , Teodor Zanetti , Franklin Tao , Dan L. Kilmer , Harald Hess , Tom Carr , Matt Bellis , Gustavo A. Pinto , Patrick Rodney Lee
IPC分类号： G11B5/596 , G11B21/02
CPC分类号： G11B5/59633
摘要： A system and methods for efficiently performing media writing functions is disclosed. The system and methods include: detecting media movement with respect to a base and heads during reading and writing, and moving the heads in response; using an interferometer, such as a dual beam differential interferometer, to dynamically monitor disk position and address perceived errors; and minimizing repeatable and non repeatable runout error by writing data, such as servo bursts, in multiple revolutions to average adverse runout conditions. The present system has the ability to use an interferometer to enhance media certification and perform on line, in situ monitoring of the media, and includes shrouding, head mounting, disk biasing, and related mechanical aspects beneficial to media writing.
摘要翻译：公开了一种用于有效执行媒体写入功能的系统和方法。该系统和方法包括：在读取和写入期间相对于基座和头部检测媒体移动，并且响应地移动头部; 使用诸如双光束差分干涉仪的干涉仪来动态地监测磁盘位置并解决感知到的错误; 并通过以多次旋转将数据（例如伺服脉冲串）写入平均不利的跳动条件来最小化可重复和不可重复的跳动误差。本系统能够使用干涉仪来增强媒体认证，并在线进行现场监控媒体，并且包括遮蔽，头部安装，磁盘偏置以及有利于媒体写作的相关机械方面。

4. 发明授权

US5404492A Head disk assembly simulator 失效
标题翻译：头盘组装模拟器
公开(公告)号：US5404492A
公开(公告)日：1995-04-04
申请号：US886964
申请日：1992-05-21
申请人： Alex Moraru , Bill R. Baker
发明人： Alex Moraru , Bill R. Baker
IPC分类号： G06F11/26 , G06F9/455
CPC分类号： G06F11/261
摘要： An embodiment of the present invention is a head disk assembly (HDA) simulator that outputs a flexible, totally electronic simulation of an HDA. It outputs a programmable standard HDA signal. As such the HDA simulator generates the head signal that a functioning, already servo-written HDA would provide. This signal can be ideal, eliminating any anomalies and inconsistencies inherent in electromechanical devices. Quantifiable amounts of anomalies can be systematically introduced to allow design margin testing. The HDA simulator is controlled in two ways. First, by allowing a user to choose items from four menus. And second, by allowing the user to use a built-in text editor to edit ASCII files that control the servo patterns and simulator operation. Independent channels of repetitive signals are available to specify sync, servo and data patterns. For any given simulated head position, simulated adjacent tracks are generated and then mixed-in at an appropriate ratio. Signals that are unique to each track are also available, to accommodate special requirements such as Grey code.
摘要翻译：本发明的实施例是一种头盘组件（HDA）模拟器，其输出HDA的灵活的全电子仿真。它输出可编程标准HDA信号。因此，HDA模拟器产生一个功能已经是伺服写入的HDA将提供的头信号。该信号可以是理想的，消除机电设备中固有的任何异常和不一致。可以系统地引入可量化的异常量，以进行设计边际测试。 HDA模拟器由两种方式控制。首先，允许用户从四个菜单中选择项目。其次，允许用户使用内置的文本编辑器编辑控制伺服模式和模拟器操作的ASCII文件。重复信号的独立通道可用于指定同步，伺服和数据模式。对于任何给定的模拟头部位置，产生模拟的相邻轨迹，然后以适当的比例混合。也可以使用每个轨道独有的信号，以满足格雷码等特殊要求。

5. 发明申请

US20060119977A1 Media servowriting system 审中-公开
标题翻译：媒体伺服系统
公开(公告)号：US20060119977A1
公开(公告)日：2006-06-08
申请号：US11239557
申请日：2005-09-28
申请人： Jun Zhu , Alex Moraru , Teodor Zanetti , Franklin Tao , Dan Kilmer , Harald Hess , Tom Carr , Matt Bellis , Gustavo Pinto , Patrick Lee
发明人： Jun Zhu , Alex Moraru , Teodor Zanetti , Franklin Tao , Dan Kilmer , Harald Hess , Tom Carr , Matt Bellis , Gustavo Pinto , Patrick Lee
IPC分类号： G11B5/596 , G11B21/02 , G11B27/36
CPC分类号： G11B5/59633
摘要： A system and methods for efficiently performing media writing functions is disclosed. The system and methods include: detecting media movement with respect to a base and heads during reading and writing, and moving the heads in response; using an interferometer, such as a dual beam differential interferometer, to dynamically monitor disk position and address perceived errors; and minimizing repeatable and non repeatable runout error by writing data, such as servo bursts, in multiple revolutions to average adverse runout conditions. The present system has the ability to use an interferometer to enhance media certification and perform on line, in situ monitoring of the media, and includes shrouding, head mounting, disk biasing, and related mechanical aspects beneficial to media writing.
摘要翻译：公开了一种用于有效执行媒体写入功能的系统和方法。该系统和方法包括：在读取和写入期间相对于基座和头部检测媒体移动，并且响应地移动头部; 使用诸如双光束差分干涉仪的干涉仪来动态地监测磁盘位置并解决感知到的错误; 并通过以多次旋转将数据（例如伺服脉冲串）写入平均不利的跳动条件来最小化可重复和不可重复的跳动误差。本系统能够使用干涉仪来增强媒体认证，并在线进行现场监控媒体，并且包括遮蔽，头部安装，磁盘偏置以及有利于媒体写作的相关机械方面。

6. 发明授权

US5894374A Method and apparatus for providing a clock assembly 失效
标题翻译：用于提供时钟组件的方法和装置
公开(公告)号：US5894374A
公开(公告)日：1999-04-13
申请号：US768558
申请日：1996-12-17
申请人： Alex Moraru
发明人： Alex Moraru
IPC分类号： G11B5/55 , G11B5/596 , G11B21/00 , G11B21/08 , G11B5/48
CPC分类号： G11B5/5534 , G11B21/00 , G11B21/083 , G11B5/59633
摘要： The present invention is a clock head assembly that provides reference clock signals during servo writing of a magnetic disk in a hard drive. The clock head assembly includes a clock head that is pivotably mounted to a housing. The housing encloses a disk mounted to a spindle. The spindle is attached to the spindle motor of a hard disk drive through an opening in the housing. The spindle motor of the disk drive rotates the spindle and disk of the clock head assembly. The clock head is coupled to a cam that is manually actuated by a lever to move the clock head arm assembly between a loaded position and an unloaded position. During servo writing, the clock head is loaded onto the disk so that reference clock signals may be read from the disk and provided to a servo controller which utilizes the clock signals to write servo information onto the disk within the hard disk drive. Upon completion of servo writing, the clock head assembly is detached from the hard disk drive. The clock head assembly may be attached to the hard drive assembly in a non-clean room environment. In addition, the servo writing process may be conducted in a non-clean room environment.
摘要翻译：本发明是一种时钟磁头组件，其在磁盘在硬盘驱动器中的伺服写入期间提供参考时钟信号。时钟头组件包括可枢转地安装到壳体的时钟头。壳体包围安装到主轴的盘。主轴通过外壳中的开口连接到硬盘驱动器的主轴电机。磁盘驱动器的主轴电机旋转时钟磁头组件的主轴和磁盘。时钟头耦合到由杠杆手动致动的凸轮，以将时钟头臂组件移动到加载位置和卸载位置之间。在伺服写入期间，时钟头被加载到盘上，从而可以从盘读取参考时钟信号，并提供给使用时钟信号的伺服控制器将伺服信息写入到硬盘驱动器内的盘上。伺服写入完成后，时钟头组件与硬盘驱动器分离。时钟头组件可以在非洁净室环境中附接到硬盘驱动器组件。此外，伺服写入处理可以在非洁净室环境中进行。

7. 发明授权

US5333140A Servowriter/certifier 失效
标题翻译：伺服器/认证机构
公开(公告)号：US5333140A
公开(公告)日：1994-07-26
申请号：US770642
申请日：1991-10-03
申请人： Alex Moraru , Bill R. Baker , Yechel A. Yassif
发明人： Alex Moraru , Bill R. Baker , Yechel A. Yassif
IPC分类号： G11B5/09 , G11B19/02 , G11B20/18 , G11C29/00 , G06F7/02
CPC分类号： G11B5/09 , G11B19/02 , G11B20/182
摘要： A microcomputer controlled media and disk testing system having a media servowriting subsystem and a certification subsystem. The servowriting subsystem comprises a precision magnetic read/write (R/W) head positioning device based on a laser positioning device and pattern generating and writing circuitry. The certification subsystem comprises of an apparatus to open bit windows and adjust thresholds and to assess the quality and nature of defects from the positions of bits and their analog characteristics when read back relative to such windows.
摘要翻译：具有媒体伺服驱动子系统和认证子系统的微机控制媒体和磁盘测试系统。伺服驱动子系统包括基于激光定位装置和模式生成和写入电路的精密磁读/写（R / W）头定位装置。认证子系统包括打开位窗口并调整阈值的装置，并且当相对于这些窗口读回时，从位的位置及其模拟特性来评估缺陷的质量和性质。

8. 发明授权

US5177651A Magnetic media and servo synchronization method 失效
标题翻译：磁介质和伺服同步方法
公开(公告)号：US5177651A
公开(公告)日：1993-01-05
申请号：US137803
申请日：1987-12-23
申请人： Alex Moraru , Peter Skalon
发明人： Alex Moraru , Peter Skalon
IPC分类号： G11B20/10 , G11B5/596 , G11B20/12
CPC分类号： G11B5/59655
摘要： A flexible data disk has consecutive servo tracks having a synchronization and alternate synchronization mark. The synchronization and alternate synchronization marks in each servo sector are radially aligned. Four magnetic pulses represent a synchronization mark and two magnetic pulses represent an alternate synchronization mark. The disk drive system will read and identify the synchronization marks and alternate synchronization marks and start generating timing pulses as appropriate. The servo bursts can then be read allowing the disk drive system to center the transducer head over the data tracks.

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