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1. 发明授权

US07518816B2 Method and apparatus for disc drive data security using fields in servo wedges 有权
标题翻译：用于磁盘驱动器数据安全的方法和装置，使用伺服楔中的磁场
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。

2. 发明授权

US5060210A Controlling head seeking speed in disk storage units by limiting displacement of head with respect to its supporting headarm 失效
标题翻译：通过限制头相对于其支撑头臂的位移来控制磁盘存储单元中的磁头寻道速度
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.

3. 发明授权

US4519553A Multiple spindle winding apparatus 失效
标题翻译：多轴卷绕装置
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。

4. 发明授权

US06912235B2 Apparatus and method for phase control of tunable external cavity lasers 有权
标题翻译：可调外腔激光器的相位控制装置和方法
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。

5. 发明授权

US5289319A Apparatus and method for detecting physical orientation of a position system and for calibrating an optimum control for the system that is usable in optical disk recorders 失效
标题翻译：用于检测位置系统的物理取向并用于校准可用于光盘记录器的系统的最佳控制的装置和方法
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。

6. 发明授权

US5257251A Single loop servo-positioning systems having means for changing the dynamic range of a position-error signal with speed of the relatively movable members 失效
标题翻译：单回路伺服定位系统具有用于通过相对移动的构件的速度改变位置误差信号的动态范围的装置
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。

7. 发明授权

US5220546A Operating optical disk drives including calibrating a tracking error signal 失效
标题翻译：操作光盘驱动器，包括校准跟踪错误信号
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.

8. 发明授权

US5164932A Acquiring a best focus using a focus signal offset 失效
标题翻译：使用聚焦信号获取最佳聚焦
公开(公告)号：US5164932A
公开(公告)日：1992-11-17
申请号：US589708
申请日：1990-09-28
申请人： Alan A. Fennema , Robert A. Klem
发明人： Alan A. Fennema , Robert A. Klem
IPC分类号： G11B7/095 , G11B7/09
CPC分类号： G11B7/094 , G11B7/0945
摘要： A focus acquisition system includes providing a focus offset and changing the offset symmetrically for each measurement cycle. The amplitudes of the readback or tracking error signal are sensed and compared. When the amplitudes of the tracking error or readback signal is different at each of the offsets, then a new measurment cycle is performed after calculating a new offset value. The process is repeated until the temporary measurement offsets result in readback amplitudes that are substantially equal. A best focus is then indicated as being a position in which small defocussing will not substantially degrade the quality of the readback signal.

9. 发明授权

US5425013A Relative position sensing calibration for optical storage device 失效
标题翻译：光存储设备的相对位置传感校准
公开(公告)号：US5425013A
公开(公告)日：1995-06-13
申请号：US151238
申请日：1993-11-12
申请人： Alan A. Fennema , Timothy S. Gardner , Brian G. Goodman , Yoshihiro Hirasaka
发明人： Alan A. Fennema , Timothy S. Gardner , Brian G. Goodman , Yoshihiro Hirasaka
IPC分类号： G11B7/085 , G11B7/00
CPC分类号： G11B7/08505
摘要： A relative position error signal is calibrated in an optical storage device in which a tracking error signal (TES) varies as the light beam shifts its position through the objective lens. The calibration is performed by moving the coarse carriage to a predetermined region of the optical disk and measuring the TES. The fine actuator is adjusted until the tracking error signal equals a predetermined value. Then, the relative position error signal is read and an adjustment to the RPE gain is calculated to bring the gain to a predetermined value. The adjusted gain is used during normal disk access operations.
摘要翻译：相对位置误差信号在光存储装置中被校准，其中跟踪误差信号（TES）随着光束将其位置偏移通过物镜而变化。通过将粗滑架移动到光盘的预定区域并测量TES来执行校准。微调致动器被调整直到跟踪误差信号等于预定值。然后，读取相对位置误差信号，并计算对RPE增益的调整，以使增益达到预定值。在正常磁盘访问操作期间使用调整后的增益。

10. 发明授权

US5138594A Reducing amplitude variations of optical disk readback signals and increasing reliability of track-crossing counts 失效
标题翻译：降低光盘读取信号的幅度变化，提高轨道交叉点的可靠性
公开(公告)号：US5138594A
公开(公告)日：1992-08-11
申请号：US512308
申请日：1990-04-20
申请人： Alan A. Fennema , Benjamin C. Fiorino
发明人： Alan A. Fennema , Benjamin C. Fiorino
IPC分类号： G11B7/085 , G11B7/09 , G11B7/095 , G11B19/04
CPC分类号： G11B7/0948 , G11B19/04 , G11B7/08541
摘要： An optical disk recorder includes disk reflectance calibration means for measuring variations in disk reflectance over the recording area of the disk. Correction factors based on measured reflectance for adjusting sensed signal level and gain reduce the effects of varying reflectance on the sensed signal. In a preferred embodiment, the sensed signal is employed as a signal in quadrature to a tracking error signal for ensuring reliable track counting in a track seeking operation. In a grooved medium, reflectance is calibrated for both grooves and mesas between the grooves.

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