公开(公告)号：US06785075B2

公开(公告)日：2004-08-31

申请号：US09915935

申请日：2001-07-26

申请人： Lawrence M. Bryant ,  Gabor Szïta ,  Alan A. Fennema ,  Karl A. Belser ,  Robert D. Murphy

发明人： Lawrence M. Bryant ,  Gabor Szïta ,  Alan A. Fennema ,  Karl A. Belser ,  Robert D. Murphy

IPC分类号： G11B509

CPC分类号： G11B20/1403 ,  G11B5/5534 ,  G11B5/59633 ,  G11B21/083 ,  G11B21/106

摘要： A disc drive with an information portion previously written on a rotatable disc surface, a servo write clock generator phase lock loop circuit controlling timing for writing a reference mark to the rotatable disc surface in substantial time alignment and phase and frequency coherent with the information portion previously written to the rotatable disc surface, a servo write clock generator phase lock loop circuit controlling timing for writing the reference mark, a pulse detector circuit for creating logic level signals from the reference mark, a pattern generator for generating reference mark write signals from the logic level signals, a memory buffer for storing radial position correction tables and values for writing the reference mark, and a self-servo control and sequencing circuit synchronizing timing signals for writing the reference mark to rotatable disc surface of disc drive.

摘要翻译： 具有先前写在可旋转盘表面上的信息部分的磁盘驱动器，伺服写时钟发生器锁相环电路，控制在基本时间对准中将参考标记写入可旋转盘表面的定时，以及与先前信息部分相干的相位和频率 写入可旋转盘表面的伺服写入时钟发生器锁相环电路控制用于写入参考标记的定时，用于从参考标记产生逻辑电平信号的脉冲检测器电路，用于从逻辑产生参考标记写入信号的模式发生器 电平信号，用于存储径向位置校正表的存储器缓冲器和用于写入参考标记的值，以及自伺服控制和排序电路，用于将用于将参考标记写入盘驱动器的可旋转盘表面的定时信号同步。

公开(公告)号：US06345021B1

公开(公告)日：2002-02-05

申请号：US09189234

申请日：1998-11-10

申请人： Karl A. Belser ,  Alan A. Fennema

发明人： Karl A. Belser ,  Alan A. Fennema

IPC分类号： G11B700

CPC分类号： G11B11/10578 ,  G11B5/59677 ,  G11B11/10565 ,  G11B2005/0021

摘要： A system and method for encoding servo sector information in a nonvolatile data storage and retrieval system using rotating recording disks. Servo sectors are angularly-spaced approximately radial regions reserved for position reference and tracking adjustment information. Servo timing marks including means for detecting defects on the recording surface, encoded track address and sector address data, and position error signal blocks are permanently fabricated into a number of servo sectors. The present invention helps the storage system controller locate, certify, and follow any particular track and sector while maximizing the amount of disk surface area available for data storage and retrieval.

摘要翻译： 一种用于使用旋转记录盘在非易失性数据存储和检索系统中对伺服扇区信息进行编码的系统和方法。 伺服扇区为保留位置参考和跟踪调整信息的角度间隔近似径向区域。 包括用于检测记录表面上的缺陷的装置，编码的轨道地址和扇区地址数据以及位置误差信号块的伺服定时标记被永久地制成多个伺服扇区。 本发明有助于存储系统控制器定位，认证和跟踪任何特定的轨道和扇区，同时最大化可用于数据存储和检索的磁盘表面积的量。

公开(公告)号：US5974019A

公开(公告)日：1999-10-26

申请号：US061839

申请日：1998-04-16

申请人： Karl A. Belser ,  Joseph Drake ,  John H. Jerman ,  Alan A. Fennema

发明人： Karl A. Belser ,  Joseph Drake ,  John H. Jerman ,  Alan A. Fennema

IPC分类号： G02B6/35 ,  G02B6/42 ,  G11B7/12 ,  G11B7/135 ,  G11B11/105 ,  G11B7/00

CPC分类号： G02B6/422 ,  G11B11/10543 ,  G11B7/12 ,  G11B7/122 ,  G11B7/1353 ,  G11B7/1384 ,  G02B6/4222 ,  G11B11/1058

摘要： A positioning system for selectively directing a first beam of light towards a destination and a second beam of light towards a first diffractive optic. The first beam of light and the second beam of light traverse a substantially co-linear optical path. The first diffractive optic diffracts the second beam of light into a plurality of optical spots. The second beam of light comprising the plurality of optical spots is directed onto a second diffractive optic. A change in position of the plurality of optical spots relative to the second diffractive optic is sensed in a reflection of the second beam of light by a detection element and representative signals are derived thereof. The signals are coupled to a directing assembly, which directs the first beam of light towards the destination.

摘要翻译： 一种定位系统，用于选择性地将第一光束朝向目的地引导，而第二光束朝向第一衍射光学器件。 第一光束和第二光束穿过基本上共线的光路。 第一衍射光将第二光束衍射成多个光点。 包括多个光点的第二光束被引导到第二衍射光学元件上。 通过检测元件在第二光束的反射中感测到多个光点相对于第二衍射光学器件的位置变化，并且导出代表性的信号。 信号耦合到引导组件，该引导组件将第一光束引向目的地。

公开(公告)号：US07518816B2

公开(公告)日：2009-04-14

申请号：US10870866

申请日：2004-06-16

申请人： Alan A. Fennema ,  Gayle L. Noble

发明人： Alan A. Fennema ,  Gayle L. Noble

IPC分类号： G11B19/04 ,  G11B5/02 ,  G06F12/14 ,  H04K1/00

CPC分类号： G11B20/00086 ,  G11B7/0045 ,  G11B7/00745 ,  G11B19/122 ,  G11B20/00123 ,  G11B20/0021 ,  G11B20/00253 ,  G11B20/00297 ,  G11B20/00449 ,  G11B20/00492 ,  G11B20/00659 ,  G11B2220/2516

摘要： The present invention includes a method and apparatus to write and read copy protected data on a disc drive storage system by encoding and decoding data to be copy protected using servo wedge data as the encoding element. In one aspect, the drive is marked by a number generated from the servo wedge data.

摘要翻译： 本发明包括一种通过使用伺服楔形数据作为编码元件对要进行复制保护的数据进行编码和解码来将读取保护的数据写入和读取在盘驱动器存储系统上的方法和装置。 在一个方面，驱动器由从伺服楔形数据产生的数字标记。

公开(公告)号：US5060210A

公开(公告)日：1991-10-22

申请号：US589706

申请日：1990-09-28

申请人： Alan A. Fennema ,  Reed A. Hancock

发明人： Alan A. Fennema ,  Reed A. Hancock

IPC分类号： G11B5/55 ,  G11B7/085 ,  G11B11/105 ,  G11B21/08

CPC分类号： G11B21/085 ,  G11B11/10556 ,  G11B5/5556 ,  G11B7/08517 ,  G11B7/08588

摘要： In a "piggy-back" head support system, a fine actuator which carries the head (lens or transducer) is controlled to move the head. A coarse actuator or headarm movably supports the fine actuator and is mounted on a frame for movement radially of the signal storage disk. The head scans tracks on the disk. A servo actuates the coarse actuator to follow the movements of the fine actuator. In a seek, the fine coarse actuator may not be able to follow the fine actuator resulting in the fine actuator hitting a safety stop. When this happens, seek errors occur. According to the invention, the relative displacement of the fine actuator with respect to the coarse actuator is limited during predetermined portions of a seek operation, i.e., the high speed accelerate and decelerate portions.

公开(公告)号：US4519553A

公开(公告)日：1985-05-28

申请号：US626948

申请日：1984-07-02

申请人： Jesse L. Campbell ,  Alan A. Fennema ,  Robert B. Henderson ,  William G. Rance, Jr. ,  Paul H. Whittington ,  William O. Wightman, Jr.

发明人： Jesse L. Campbell ,  Alan A. Fennema ,  Robert B. Henderson ,  William G. Rance, Jr. ,  Paul H. Whittington ,  William O. Wightman, Jr.

IPC分类号： B65H19/28 ,  G11B23/113 ,  B31F5/04 ,  B65C3/12

CPC分类号： B65H19/28 ,  G11B23/113

摘要： Winding apparatus for continuously winding tape media upon reels contained within closed cartridges. The winding apparatus includes means for supplying cartridges alternatively to three separate in-line winding channels all of which perform a winding function and then collecting the wound cartridges off the individual lines and presenting an output station for a subsequent packing operation. Each channel includes vacuum extension means for reaching through an opening in each cartridge to apply an adhesive patch to the hub of the reel contained within the cartridge. Each line also includes means for continuously supplying tape media to a wind station for winding upon the reels passing through that line. At the wind station, additional vacuum means bring the leading edge of the media into the cartridge and press it against the adhesive patch, thereby attaching the media to the reel. Means are provided for winding the attached media upon the reel to one of the predetermined category of sizes, and then severing the media while maintaining control of the supply end for feeding it to the next cartridge. At a following station a leader block is applied to the trailing edge of the media associated with each completed reel to complete the winding operation. Cleaning and ID printing stations are also provided, if desired.

摘要翻译： 卷绕装置用于在包含在封闭的盒内的卷轴上连续卷绕带介质。 卷绕装置包括用于将三个单独的在线卷绕通道提供给三个单独的在线卷绕通道的装置，所述三个单独的在线卷绕通道执行卷绕功能，然后将卷绕的筒从各个线路收集并呈现用于随后的打包操作的输出站。 每个通道包括用于到达每个筒中的开口的真空延伸装置，以将粘合贴片施加到容纳在盒中的卷轴的轮毂上。 每条线还包括用于将卷带介质连续地供应到风站以绕过通过该线的卷轴的装置。 在风站，额外的真空装置将介质的前缘带入墨盒中并将其压靠在粘合贴片上，从而将介质附着到卷轴上。 提供了用于将附着的介质卷绕到卷轴上的预定类别的尺寸之一的装置，然后在维持供给端的控制以将其输送到下一个盒的同时切断介质。 在随后的站处，将引导块应用于与每个完成的卷轴相关联的介质的后缘以完成卷绕操作。 如果需要，还提供清洁和ID印刷站。

公开(公告)号：US06912235B2

公开(公告)日：2005-06-28

申请号：US10210039

申请日：2002-07-31

申请人： Douglas W. Anthon ,  Jill D. Berger ,  Alexander A. Tselikov ,  Stephen J. Hrinya ,  Howard S. Lee ,  Alan A. Fennema ,  Man F. Cheung

发明人： Douglas W. Anthon ,  Jill D. Berger ,  Alexander A. Tselikov ,  Stephen J. Hrinya ,  Howard S. Lee ,  Alan A. Fennema ,  Man F. Cheung

IPC分类号： H01S5/042 ,  H01S5/0687 ,  H01S5/14 ,  H01S3/098 ,  H01S3/13

CPC分类号： H01S5/141 ,  H01S5/042 ,  H01S5/0687 ,  H01S5/143

摘要： An apparatus and method for controlling the phase of a tunable laser is provided. Stabilization of the mode of a laser beam is provided as the laser is tuned to a target frequency. For one embodiment, a laser generates a reference beam and an output beam. The power of each of beam is measured by optical detectors, and a ratio thereof is utilized to detect when a mode hop occurs as the laser is coarsely tuned. The average of the pre and post mode hop ratios is utilized as a control setpoint while finely tuning the laser to the target frequency. Wavelength lockers, optical power dividers and optical detectors are utilized to determine power levels of the reference and output beams while also monitoring frequency characteristics thereof. A control unit utilizes the outputs from the wavelength locker to control the operation of the extended cavity laser during and after tuning.

摘要翻译： 提供了一种用于控制可调激光器的相位的装置和方法。 当激光被调谐到目标频率时，提供激光束的模式的稳定性。 对于一个实施例，激光器产生参考光束和输出光束。 每个光束的功率由光学检测器测量，并且其比例用于检测当激光器被粗调谐时何时出现模式跳跃。 将前和后模式跳比的平均值用作控制设定值，同时将激光器精细地调谐到目标频率。 利用波长锁定器，光功率分配器和光学检测器来确定参考和输出光束的功率电平，同时还监视其频率特性。 控制单元利用来自波长锁定器的输出来调节调谐期间和之后的扩展腔激光器的操作。

公开(公告)号：US5289319A

公开(公告)日：1994-02-22

申请号：US960034

申请日：1992-10-13

申请人： Enrique E. Aviles ,  Edwin R. Childers ,  Alan A. Fennema ,  Dave P. McReynolds

发明人： Enrique E. Aviles ,  Edwin R. Childers ,  Alan A. Fennema ,  Dave P. McReynolds

IPC分类号： G11B7/09 ,  G02B7/02 ,  G11B7/00

CPC分类号： G11B7/0925

摘要： A rotary positioner is rotatably mounted upon a reciprocating carriage of a optical disk drive. To detect and indicate one of a plurality of possible orientations of the disk drive, a side bias force is applied to the rotary positioner in a direction orthogonal to the radius of the disk drive. It has been found that each orientation has a side bias at which gravity effects are removed from the rotary positioner. At these points of gravity accommodation, certain instabilities in servo operation occur. Since each orientation requires a different side bias force to create the respective servo instabilities, the side bias force causing such instability indicates the drive orientation. Two modes of testing for orientation are disclosed. The carriage positioner is actuate for causing a momentary uncorrected radial movement of the carriage. The response of the carriage servo is measured in one of two ways. The uncorrected momentary carriage motion is detected either by detecting changes in a position error signal of either the rotary position or the carriage.

摘要翻译： 旋转定位器可旋转地安装在光盘驱动器的往复滑架上。 为了检测并指示盘驱动器的多个可能取向中的一个，在与盘驱动器的半径相垂直的方向上，向旋转定位器施加侧偏压力。 已经发现，每个取向具有从旋转定位器去除重力效应的侧偏压。 在这些重力调节位置，伺服操作发生某些不稳定。 由于每个方向需要不同的侧向偏压力以产生相应的伺服不稳定性，所以引起这种不稳定性的侧偏压力表示驱动方向。 公开了两种取向测试模式。 滑架定位器被致动以引起滑架的瞬时未校正的径向移动。 滑架伺服的响应以两种方式之一测量。 通过检测旋转位置或滑架的位置误差信号的变化来检测未校正的瞬时滑架运动。

公开(公告)号：US5257251A

公开(公告)日：1993-10-26

申请号：US764264

申请日：1991-09-23

申请人： W. Wai-Chung Chow ,  Alan A. Fennema

发明人： W. Wai-Chung Chow ,  Alan A. Fennema

IPC分类号： G11B7/085 ,  G11B7/095

CPC分类号： G11B7/08511

摘要： A single loop servo is used for positioning a lens holding element with respect to an optical disk. The dynamic range of the error signal used in the positioning is dynamically frequency shifted such that the servo summing of the error signal with a reference signal (velocity reference) is always performed within the same dynamic range. This action simplifies circuit operation as the dynamic range of the error signal is compressed at high speeds. Two embodiments of the invention are described.

摘要翻译： 使用单回路伺服器来相对于光盘定位透镜保持元件。 在定位中使用的误差信号的动态范围动态地频移，使得误差信号与参考信号（速度参考）的伺服相加总是在相同的动态范围内执行。 该动作可以在误差信号的动态范围被高速压缩时简化电路运行。 对本发明的两个实施例进行描述。

公开(公告)号：US5220546A

公开(公告)日：1993-06-15

申请号：US589710

申请日：1990-09-28

申请人： Alan A. Fennema

发明人： Alan A. Fennema

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/095 ,  G11B21/10

CPC分类号： G11B7/08505 ,  G11B7/094 ,  G11B7/0941 ,  G11B7/0945

摘要： An optical disk recorder has a fine actuator which holds an objective lens and which is movably mounted on a head carriage. Servo systems connected to the head carriage and the fine actuator cause the fine actuator to seek and track follow based upon signal recovered from a disk while the head carriage is caused to follow the motions of the fine actuator. A tracking error signal is generated indicating the relationship of the beam supplied through the objective lens with respect to tracks on the record medium. An RPE signal (relative position error) is generated by an RPE detector which indicates the relationship of the relative motion of the fine actuator to the head carriage. Both the RPE and TES are calibrated as to offset and as to gain for providing a more precise servo positioning system.