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1. 发明授权

US08565052B2 Methods, systems, and computer program products for correcting repeatable runout 失效
标题翻译：用于校正可重复跳动的方法，系统和计算机程序产品
公开(公告)号：US08565052B2
公开(公告)日：2013-10-22
申请号：US13528760
申请日：2012-06-20
申请人： Fred R. Hansen , Charles R. Watt
发明人： Fred R. Hansen , Charles R. Watt
IPC分类号： G11B7/00
CPC分类号： G11B7/095 , G11B20/10388 , G11B2220/2537
摘要： Methods and systems are described for correcting repeatable runout. In one aspect, an open loop tracking signal is received and squared. A discrete Fourier transform (DFT) of the squared open loop tracking signal is obtained. A velocity magnitude and an absolute value of the phase of the open loop tracking signal is determined. A RRO correction signal is iteratively constructed by performing a partial correction based on an initial phase selected and an initial velocity amplitude, measuring a relative velocity amplitude, performing a partial control correction using the initial phase and relative velocity amplitude if the amplitude is smaller than an initial amplitude or using the initial phase rotated by one hundred eighty degrees and the relative velocity amplitude if the amplitude is larger than an initial amplitude, and repeating the above steps until a tracking controller can perform closed loop control of the track to optical pickup unit velocity.
摘要翻译：描述了用于校正可重复跳动的方法和系统。一方面，接收开环跟踪信号并进行平方。获得平方开环跟踪信号的离散付里叶变换（DFT）。确定开环跟踪信号的相位的速度幅度和绝对值。通过基于所选择的初始相位和初始速度幅度来执行RRO校正信号，测量相对速度振幅，使用初始相位执行部分控制校正，如果振幅小于初始振幅或使用初始相位旋转了一百八十度，如果幅度大于初始振幅，则相对速度振幅，并且重复上述步骤，直到跟踪控制器可以执行轨道到光学拾取单元速度的闭环控制。

2. 发明授权

US08510766B2 Drum for use in testing optical tape media and method and apparatus for mounting optical tape media on drum 有权
标题翻译：用于测试光带介质的鼓和用于在光盘上安装光带介质的方法和装置
公开(公告)号：US08510766B2
公开(公告)日：2013-08-13
申请号：US13316966
申请日：2011-12-12
申请人： Faramarz Mahnad , Scott D. Wilson , Steve Ray , Charles R. Watt, Jr.
发明人： Faramarz Mahnad , Scott D. Wilson , Steve Ray , Charles R. Watt, Jr.
IPC分类号： G11B7/00
CPC分类号： G11B20/1816 , G11B7/003 , G11B7/268 , G11B2220/90 , G11B2220/93
摘要： Various embodiments herein include utilities that facilitate the substantially flat and aligned mounting of optical tape segments on testing drums to increase testing accuracy of the tape segments. In this regard, a drum for testing optical tape media is disclosed having a substantially planar portion onto which first and second ends of an optical tape segment may be mounted to thereby secure the entire tape segment around an outer testing surface of the drum. Also disclosed is fixture that may be used to precisely mount and secure the tape segment over the outer mounting surface of a drum in a manner that reduces axial run-out and wrinkling of the optical tape.
摘要翻译：本文中的各种实施例包括有利于将光带段基本上平坦和对准地安装在测试滚筒上以提高带段测试精度的效用。在这方面，公开了一种用于测试光带介质的滚筒，其具有基本平坦的部分，光学带段的第一和第二端可以安装在该平面部分上，从而将整个带段固定在滚筒的外部测试表面上。还公开了一种夹具，其可以用于以减少光学带的轴向偏离和起皱的方式将带段精确地安装和固定在滚筒的外部安装表面上。

3. 发明授权

US07551387B2 Servo writing with offset compensation for prewritten reference 有权
标题翻译：具有偏移补偿的伺服写入用于预写参考
公开(公告)号：US07551387B2
公开(公告)日：2009-06-23
申请号：US11740747
申请日：2007-04-26
申请人： Yu Sun , Dave McMurtrey , Bruce Liikanen , Don Brunnett , John W. VanLaanen , Charles R. Watt , Stan Shepherd , S. Craig Smith , Todd Franks , Lin Guo
发明人： Yu Sun , Dave McMurtrey , Bruce Liikanen , Don Brunnett , John W. VanLaanen , Charles R. Watt , Stan Shepherd , S. Craig Smith , Todd Franks , Lin Guo
IPC分类号： G11B21/02
CPC分类号： G11B25/043 , G11B5/59627 , G11B5/59661 , G11B5/59666
摘要： In accordance with various embodiments, a rotatable member is mounted to a spindle hub so that initial servo data previously provided to the rotatable member are eccentrically offset with respect to a rotational center of the spindle hub. Compensation vales are determined to characterize said offset, after which final servo data are provided to the rotatable member in relation to the initial servo data and the determined compensation values. The final servo data are nominally concentric with the rotational center of the spindle hub.
摘要翻译：根据各种实施例，可旋转构件安装到主轴毂，使得先前提供给可旋转构件的初始伺服数据相对于主轴毂的旋转中心偏心偏移。确定补偿值以表征所述偏移，之后相对于初始伺服数据和确定的补偿值将最终伺服数据提供给可旋转构件。最终伺服数据名义上与主轴毂的旋转中心同心。

4. 发明申请

US20070273996A1 REDUCED CONVOLUTION FOR REPETITIVE DISTURBANCE REJECTION 有权
标题翻译：减少反应性干扰的调整
公开(公告)号：US20070273996A1
公开(公告)日：2007-11-29
申请号：US11752684
申请日：2007-05-23
申请人： Charles R. Watt , Xiao Zhang , John W. Vanlaanen
发明人： Charles R. Watt , Xiao Zhang , John W. Vanlaanen
IPC分类号： G11B5/09 , G11B21/02
CPC分类号： G11B5/59616 , G11B5/59633
摘要： Methods according to some embodiments include writing servo patterns on a data storage medium including a plurality of timing patterns in response to phase correction values generated using a phase correction value (PCV) kernel having a length that is less than the number of timing patterns on the data storage medium.
摘要翻译：根据一些实施例的方法包括：响应于使用长度小于所述定时模式的数量的相位校正值（PCV）内核产生的相位校正值，在包括多个定时模式的数据存储介质上写入伺服模式数据存储介质。

5. 发明授权

US07054242B2 System and method for controlling focus in an optical disc drive 有权
公开(公告)号：US07054242B2
公开(公告)日：2006-05-30
申请号：US09951940
申请日：2001-09-10
申请人： Christopher J. Turner , Ron J. Kadlec , Charles R. Watt
发明人： Christopher J. Turner , Ron J. Kadlec , Charles R. Watt
IPC分类号： G11B7/00
CPC分类号： G11B7/1356 , G11B7/08505 , G11B7/08523 , G11B7/08529 , G11B7/08541 , G11B7/08576 , G11B7/09 , G11B7/0901 , G11B7/0912 , G11B7/0938 , G11B7/094 , G11B7/0941 , G11B7/0943 , G11B7/0946 , G11B7/0948 , G11B7/0953 , G11B7/0956 , G11B7/123 , G11B7/131 , G11B19/28
摘要： A system for controlling focus in an optical disc drive for optical media with a premastered area that cannot be overwritten and a user-writeable area that can be overwritten includes instructions for turning focus on and off; and for acquiring focus on the optical media in response to a command to acquire focus. The actuator arm is moved according to a sinusoidal ramp function to prevent exciting resonances in the actuator arm. The amount of push-away force used while moving the actuator arm can be adjusted to avoid overshoot. The integrity of a focus error signal is determined and an attempt to re-acquire focus is made if the focus error signal indicates a bad focus status. The system turns focus off when at least one of the following conditions are met: (1) current state is a ramp focus acquire state and the maximum ramp position was reached; (2) current state is a focus push retry state and best push away value is greater than or equal to a predetermined fraction of a nominal push away value; or (3) a focus problem develops while in a focus active state.

6. 发明授权

US06970410B2 Focus detection in a digital focus servo system 失效
标题翻译：数字聚焦伺服系统中的焦点检测
公开(公告)号：US06970410B2
公开(公告)日：2005-11-29
申请号：US09950394
申请日：2001-09-10
申请人： Ron J. Kadlec , Charles R. Watt
发明人： Ron J. Kadlec , Charles R. Watt
IPC分类号： G11B7/00 , G11B7/09
CPC分类号： G11B7/0948 , G11B7/0908 , G11B7/0946
摘要： A system for determining whether a focus servo system is in focus or out of focus (i.e. open) is disclosed. A sum signal can be compared with a threshold value. If the sum signal is below the threshold value, then a focus open condition (i.e., out-of-focus) can be indicated. In some embodiments, a focus open condition is indicated where the sum signal remains below the threshold value for a predetermined period of time.
摘要翻译：公开了一种用于确定聚焦伺服系统是聚焦还是聚焦（即打开）的系统。和信号可以与阈值进行比较。如果和信号低于阈值，则可以指示聚焦打开状态（即，离焦）。在一些实施例中，指示焦点打开状态，其中总和信号在预定时间段内保持低于阈值。

7. 发明授权

US06963524B2 System and method for controlling interrupts in a control system for an optical disc drive 失效
标题翻译：用于控制光盘驱动器的控制系统中的中断的系统和方法
公开(公告)号：US06963524B2
公开(公告)日：2005-11-08
申请号：US09951947
申请日：2001-09-10
申请人： Christopher J. Turner , Ron J. Kadlec , Charles R. Watt
发明人： Christopher J. Turner , Ron J. Kadlec , Charles R. Watt
IPC分类号： G11B7/085 , G11B7/09 , G11B7/095 , G11B7/12 , G11B7/13 , G11B7/135 , G11B19/28 , G11B7/00
CPC分类号： G11B7/1356 , G11B7/08505 , G11B7/08523 , G11B7/08529 , G11B7/08541 , G11B7/08576 , G11B7/09 , G11B7/0901 , G11B7/0912 , G11B7/0938 , G11B7/094 , G11B7/0941 , G11B7/0943 , G11B7/0946 , G11B7/0948 , G11B7/0953 , G11B7/0956 , G11B7/123 , G11B7/131 , G11B19/28
摘要： A control system for an optical disc for optical media with a premastered area that cannot be overwritten and a user-writeable area that can be overwritten, comprises a first processor operable to communicate with a second processor via a status register. The first processor sequences and monitors functions performed in the second processor and the second processor issues an interrupt when an error condition is detected in the second processor. The first processor detects the interrupt, and disables detecting further interrupts until the interrupt is serviced. Servicing the interrupt includes recording the error state and changing focus and tracking parameters based on the error condition detected.
摘要翻译：一种用于光学介质的光盘的控制系统，其具有不能被覆盖的预制区域和可被覆盖的用户可写入区域，包括可操作以经由状态寄存器与第二处理器通信的第一处理器。当在第二处理器中检测到错误条件时，在第二处理器和第二处理器中执行的第一处理器序列和监视功能发出中断。第一个处理器检测中断，并禁止检测进一步的中断，直到中断服务。维护中断包括根据检测到的错误状况记录错误状态和改变焦点和跟踪参数。

8. 发明授权

US06958963B2 System and method for handling events in an optical disc drive 失效
标题翻译：用于处理光盘驱动器中的事件的系统和方法
公开(公告)号：US06958963B2
公开(公告)日：2005-10-25
申请号：US09951329
申请日：2001-09-10
申请人： Christopher J. Turner , Charles R. Watt , Ron J. Kadlec , Hans B. Wach
发明人： Christopher J. Turner , Charles R. Watt , Ron J. Kadlec , Hans B. Wach
IPC分类号： G11B7/085 , G11B7/09 , G11B7/095 , G11B7/12 , G11B7/13 , G11B7/135 , G11B19/28 , G11B7/00
CPC分类号： G11B7/1356 , G11B7/08505 , G11B7/08523 , G11B7/08529 , G11B7/08541 , G11B7/08576 , G11B7/09 , G11B7/0901 , G11B7/0912 , G11B7/0938 , G11B7/094 , G11B7/0941 , G11B7/0943 , G11B7/0946 , G11B7/0948 , G11B7/0953 , G11B7/0956 , G11B7/123 , G11B7/131 , G11B19/28
摘要： A system and method for handling events issued as a result of error conditions in the operation of an optical disc drive include suspending processing of commanded operations in the disc drive while attempting to recover from the error condition. The recovery attempt can include increasing levels of recovery effort, such as dynamically recalibrating various components in the disc drive. The system can also determine whether a previous notice was received for the same error condition. If so, the system can determine whether excessive recovery attempts have been initiated based criteria such as the time between the notices, and/or the number of notices, for the same error condition. The recovery attempts are aborted when they become excessive. If the recovery attempt is successful, the interrupted operation is resumed at the point where the processing was suspended, such as during a write or read command.
摘要翻译：用于处理由于光盘驱动器的操作中的错误状况而发出的事件的系统和方法包括在尝试从错误状态恢复时暂停对盘驱动器中的命令操作的处理。恢复尝试可以包括提高恢复工作的水平，例如动态重新校准磁盘驱动器中的各种组件。系统还可以确定是否收到了相同错误条件的先前通知。如果是这样，系统可以根据相同错误条件的标准（例如通知之间的时间）和/或通知数量来确定是否启动了过度的恢复尝试。恢复尝试在过多时中止。如果恢复尝试成功，则在处理被暂停的时间点（例如在写入或读取命令期间）恢复中断的操作。

9. 发明授权

US06885619B2 Detector input stray light offset calibration in an optical disk drive 失效
标题翻译：光盘驱动器中的检测器输入杂散光偏移校准
公开(公告)号：US06885619B2
公开(公告)日：2005-04-26
申请号：US09950415
申请日：2001-09-10
申请人： Charles R. Watt
发明人： Charles R. Watt
IPC分类号： G11B7/00 , G11B7/09
CPC分类号： G11B7/0945
摘要： A calibration of input signal offsets for stray light in an optical disk drive is presented. The input signal offsets can be determined by setting a laser power level, receiving digitized input signals, and setting the input signal offsets so that the digitized input signals are zero. The laser power level can be a read power or a write power. In some embodiments, input signal offsets for both read power and write power are determined and stored.
摘要翻译：介绍了光盘驱动器中杂散光输入信号偏移的校准。可以通过设置激光功率电平，接收数字化输入信号和设置输入信号偏移量来确定输入信号偏移量，使得数字化的输入信号为零。激光功率电平可以是读取功率或写入功率。在一些实施例中，确定并存储用于读取功率和写入功率的输入信号偏移。

10. 发明授权

US06847597B2 Optical disk drive with a digital focus and tracking servo system 失效
标题翻译：具有数字对焦和跟踪伺服系统的光盘驱动器
公开(公告)号：US06847597B2
公开(公告)日：2005-01-25
申请号：US09950365
申请日：2001-09-10
申请人： Ron J. Kadlec , Charles R. Watt , Christopher J. Turner , Hans B. Wach
发明人： Ron J. Kadlec , Charles R. Watt , Christopher J. Turner , Hans B. Wach
IPC分类号： G11B7/00 , G11B7/09 , G11B7/095
CPC分类号： G11B7/094 , G11B7/0941
摘要： A device with an optical disk drive with a digital servo system for controlling tracking or focus in an optical disk driver is presented. A servo system according to the present invention includes an optical pick-up with detectors providing optical signals, an analog processor receiving the optical signals and providing a digital signal, and digital processors receiving the digital signal and providing a control signal that controls the position of the optical pick-up unit. The digital processor executes an algorithm that calculates an error signal, provides amplification and biasing to the error signal, provides filtering for the error signal, and computes the control signal. The error signal can be the focus error signal or the tracking error signal. The device can be any device.
摘要翻译：本发明提供一种具有数字伺服系统的光盘驱动器，用于控制光盘驱动器中的跟踪或聚焦。根据本发明的伺服系统包括具有提供光信号的检测器的光学拾取器，接收光信号并提供数字信号的模拟处理器，以及接收数字信号的数字处理器，并提供控制信号，光学拾取单元。数字处理器执行计算误差信号的算法，提供误差信号的放大和偏置，为误差信号提供滤波，并计算控制信号。误差信号可以是聚焦误差信号或跟踪误差信号。该设备可以是任何设备。

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