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1. 发明授权

US07782721B2 Digital focus and tracking servo system with multi-zone calibration 有权
标题翻译：具有多区域校准功能的数字对焦跟踪伺服系统
公开(公告)号：US07782721B2
公开(公告)日：2010-08-24
申请号：US09950398
申请日：2001-09-10
申请人： Ron J. Kadlec , Christopher J. Turner , Charles R. Watt , Hans B. Wach
发明人： Ron J. Kadlec , Christopher J. Turner , Charles R. Watt , Hans B. Wach
IPC分类号： G11B7/095
CPC分类号： G11B7/0945 , G11B2007/0006
摘要： A multi-zone calibration system is disclosed. The multi-zone calibration system calibrates the operating parameters of an optical disk drive over a plurality of zones over an optical media. The optical media, in addition, can have writeable and premastered portions. The operating parameters can be calibrated for each of the media types in each of the zones. Additionally, the operating parameters can be calibrated for each type of operation (e.g., read or write) in each zone.
摘要翻译：公开了一种多区域校准系统。多区域校准系统通过光学介质校准多个区域上的光盘驱动器的操作参数。此外，光学介质可以具有可写入和预处理的部分。可以为每个区域中的每种介质类型校准操作参数。此外，可以针对每个区域中的每种类型的操作（例如，读取或写入）校准操作参数。

2. 发明授权

US07196979B2 Calibration storage methods for a digital focus and tracking servo system with calibration 有权
标题翻译：用于校准的数字对焦和跟踪伺服系统的校准存储方法
公开(公告)号：US07196979B2
公开(公告)日：2007-03-27
申请号：US09950360
申请日：2001-09-10
申请人： Ron J. Kadlec , Christopher J. Turner , Charles R. Watt , Hans B. Wach
发明人： Ron J. Kadlec , Christopher J. Turner , Charles R. Watt , Hans B. Wach
IPC分类号： G11B7/00
CPC分类号： G11B7/0945
摘要： A method of storing calibrated optical parameters is presented. In some embodiments, calibrated optical parameters are stored in place of stored parameters. In some embodiments, averages between the calibrated operating parameters and stored optical parameters are stored. In other embodiments, the stored optical parameters are allowed to vary only by a maximum amount. In some embodiments, if the calibrated parameters vary by more than threshold values, then the calibrated parameters are not stored.
摘要翻译：介绍了存储校准光学参数的方法。在一些实施例中，存储校准的光学参数来代替存储的参数。在一些实施例中，存储校准的操作参数和存储的光学参数之间的平均值。在其他实施例中，允许所存储的光学参数仅改变最大量。在一些实施例中，如果校准参数变化超过阈值，则校准参数不被存储。

3. 发明授权

US07057983B2 System and method for controlling tracking and seeking in an optical disc drive 失效
公开(公告)号：US07057983B2
公开(公告)日：2006-06-06
申请号：US09951331
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 control system for controlling tracking and seeking in an optical disc drive for optical media with a pitted premastered area that cannot be overwritten and a grooved user-writeable area that can be overwritten. The control system determines whether an optical pickup unit is over the premastered or the writeable areas of the optical media by measuring peak to peak amplitude of a tracking error signal. Gains and calibration values are selected based on whether an optical pickup unit is over the premastered or the writeable areas of the optical media. Reading from and writing to the optical media is disabled while jumping tracks. Control of jumping tracks on the optical media includes controlling: jumping a single track on the optical media; jumping a specified number of tracks every specified number of revolutions of the optical media; auto jumpbacks, and jumping in forward or reverse directions. Parameters for controlling jumps include at least one of: jump type, number of tracks to jump, time delay between track jumps, number of revolutions of the optical media between jumps, and whether it is not safe to read from or write to the optical media. The control system performs long seeks by predicting whether the tracking actuator arm will be positioned over the premastered area or the writeable area at the end of the long seek, and to load calibration parameters corresponding to the type of media over which the tracking actuator arm will be positioned at the end of the long seek.

4. 发明授权

US07023776B2 Calibration initiation methods for a tracking and focus servo system 失效
公开(公告)号：US07023776B2
公开(公告)日：2006-04-04
申请号：US09950541
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
CPC分类号： G11B7/0945 , G11B2007/0006
摘要： A calibration method for an optical disk drive is presented. The operating parameters of an optical disk drive are initially calibrated when the disk drive is produced or during a repair step. The disk drive is then field calibrated during normal operation. Operating parameters can be field calibrated during power up. Further, operating parameters can be field calibrated when a new optical media is inserted into the optical disk drive. Additionally, operating parameters can be field calibrated during error recovery.

5. 发明授权

US07680004B2 Digital servo system with inverse non-linearity compensation 失效
标题翻译：数字伺服系统具有反向非线性补偿
公开(公告)号：US07680004B2
公开(公告)日：2010-03-16
申请号：US09950397
申请日：2001-09-10
申请人： Ron J. Kadlec , Christopher J. Turner , Charles R. Watt
发明人： Ron J. Kadlec , Christopher J. Turner , Charles R. Watt
IPC分类号： G11B7/00
CPC分类号： G11B7/094 , G11B7/0941
摘要： A servo system with in an optical disk drive with an inverse non-linearity compensation is disclosed. An error signal calculated from signals received from an optical pick-up unit can be offset by an offset value and amplified by a gain in the early stages of a calculation of a control signal for controlling a position of the optical pick-up unit. The non-linearity compensation adjusts the gain based on the offset value so that the response of the servo system to changes in the error signal is substantially linear. The error signal can be the tracking error signal in a tracking servo system and can be the focus error signal in a focus servo system.
摘要翻译：公开了具有逆非线性补偿的光盘驱动器的伺服系统。从光学拾取单元接收的信号计算的误差信号可以偏移偏移值，并且在用于控制光学拾取单元的位置的控制信号的计算的早期阶段被增益放大。非线性补偿基于偏移值来调整增益，使得伺服系统对误差信号的变化的响应基本上是线性的。误差信号可以是跟踪伺服系统中的跟踪误差信号，并且可以是聚焦伺服系统中的聚焦误差信号。

6. 发明授权

US07672199B2 Close focus algorithm in a digital focus servo system 失效
标题翻译：数字聚焦伺服系统中的近距离对焦算法
公开(公告)号：US07672199B2
公开(公告)日：2010-03-02
申请号：US09950329
申请日：2001-09-10
申请人： Ron J. Kadlec , Charles R. Watt , Christopher J. Turner
发明人： Ron J. Kadlec , Charles R. Watt , Christopher J. Turner
IPC分类号： G11B7/00
CPC分类号： G11B7/08511
摘要： A focus servo system with a focus close algorithm is disclosed. The focus close algorithm provides a bias control effort to the focus servo system when focus is closed. A method of closing focus includes positioning an optical pick-up unit at a first position away from an optical medium, moving the optical pick-up unit towards a second position by altering a focus control effort, monitoring a sum signal obtained from signals received from the optical pick-up unit, and setting the bias control effort to the focus control effort when a closure criteria is satisfied. In some embodiments, the closure criteria includes that a sum signal exceeds a threshold value. In some embodiments, the closure criteria includes that a focus error signal is below a FES threshold.
摘要翻译：公开了一种具有聚焦关闭算法的聚焦伺服系统。聚焦关闭算法在聚焦关闭时为聚焦伺服系统提供偏压控制。关闭焦点的方法包括将光学拾取单元定位在远离光学介质的第一位置处，通过改变聚焦控制力将光学拾取单元移动到第二位置，监测从从光学拾取单元，并且当满足关闭标准时，将偏置控制力设置为聚焦控制力。在一些实施例中，关闭标准包括和信号超过阈值。在一些实施例中，闭合准则包括聚焦误差信号低于FES阈值。

7. 发明授权

US07020054B2 Digital servo system with biased feed-forward 失效
公开(公告)号：US07020054B2
公开(公告)日：2006-03-28
申请号：US09950395
申请日：2001-09-10
申请人： Ron J. Kadlec , Charles R. Watt , Christopher J. Turner
发明人： Ron J. Kadlec , Charles R. Watt , Christopher J. Turner
IPC分类号： G11B7/095
CPC分类号： G11B7/08517 , G11B7/0946 , G11B7/0948 , G11B7/0953
摘要： A digital servo system with a biased feed-forward control is disclosed. The biased feed-forward control determines the low frequency component of a control signal from the digital servo system. The low frequency component can then be added to a future control signal to form an adjusted control signal. In some embodiments, the low frequency component is then removed from the future control signals. In some embodiments, a bias signal is incremented or decremented in response to the low frequency component, the bias signal being added to future control signals.

8. 发明授权

US06977873B2 System and method to adjust the level of re-calibration effort based on disc drive performance 失效
标题翻译：基于磁盘驱动器性能的系统和方法来调整重新校准的水平
公开(公告)号：US06977873B2
公开(公告)日：2005-12-20
申请号：US09951850
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 dynamically re-calibrating an optical disc drive during operation is provided. The optical media includes a pitted premastered area that cannot be overwritten and a grooved user-writeable area that can be overwritten. The system can attempt several increasing levels of effort to recalibrate the disc drive until the disc drive reaches a desired level of performance, or the recalibration effort levels are exhausted. During each level of recalibration effort, various calibration values are determined for the optical media and the servo actuator, along with a notch frequency for a notch filter; a focus actuator offset; a tracking actuator offset; a focus control loop gain; and a tracking control loop gain. The optical media disc is divided into zones, and zone calibration tables for each of the zones are generated. Each zone is recalibrated using the corresponding zone calibration table. The calibration values can be stored and used during subsequent recalibration efforts, such as adjusting the focus control loop gain and/or the tracking control loop gain.
摘要翻译：提供了一种用于在操作期间动态地重新校准光盘驱动器的系统和方法。光学介质包括不能被覆盖的凹坑预制区域和可被覆盖的带槽的用户可写区域。该系统可以尝试几个不断增加的努力来重新校准磁盘驱动器，直到磁盘驱动器达到所需的性能水平，或重新校准工作级别耗尽。在每个重新校准水平期间，为光学介质和伺服致动器确定各种校准值以及陷波滤波器的陷波频率; 焦点致动器偏移; 跟踪致动器偏移; 聚焦控制环路增益; 和跟踪控制环增益。光学介质盘被分成区域，并且产生每个区域的区域校准表。每个区域使用相应的区域校准表重新校准。校准值可以在随后的重新校准努力期间被存储和使用，诸如调整聚焦控制环路增益和/或跟踪控制环路增益。

9. 发明授权

US06950380B2 Detector input dark current offset calibration in an optical disk drive digital servo 失效
标题翻译：检测器在光盘驱动器数字伺服中输入暗电流偏移校准
公开(公告)号：US06950380B2
公开(公告)日：2005-09-27
申请号：US09950512
申请日：2001-09-10
申请人： Charles R. Watt , Ron J. Kadlec , Christopher J. Turner
发明人： Charles R. Watt , Ron J. Kadlec , Christopher J. Turner
IPC分类号： G11B7/09 , G11B7/095 , G11B20/00
CPC分类号： G11B7/0945
摘要： A calibration of input signal offset in an optical disk drive is presented. The input signal offsets the input signals received from an optical pick-up unit before digitization. In some embodiments, the input signal offset is set such that the digitized input signals are zero when laser power is off. Further, a thermal drift correction is presented.
摘要翻译：介绍了光盘驱动器中输入信号偏移的校准。在数字化之前，输入信号抵消从光学拾取单元接收的输入信号。在一些实施例中，输入信号偏移被设置为使得当激光功率关闭时数字化的输入信号为零。此外，提出了热漂移校正。

10. 发明授权

US06930963B2 Tracking and focus servo system with head load 失效
标题翻译：跟踪和聚焦伺服系统与头负载
公开(公告)号：US06930963B2
公开(公告)日：2005-08-16
申请号：US09950540
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： G11B7/0945 , G11B7/08517
摘要： A head load algorithm for an optical disk drive is presented. On startup, the optical media can be spun up. Then an optical pick-up unit can be positioned at an extreme position, for example at the inner diameter, and focus can be closed. The optical pick-up unit then can be incrementally moved away from the extreme position while the tracking error signal is monitored to locate an area of the optical media with tracks. Once the area is located, a tracking servo system can close on one of the tracks.
摘要翻译：提出了一种用于光盘驱动器的头负载算法。启动时，光学介质可以旋转。然后，光学拾取单元可以位于例如在内径处的极限位置，并且可以关闭聚焦。然后，光拾取单元可以递增地移动远离极限位置，同时监视跟踪误差信号以定位具有轨迹的光学介质的区域。一旦该区域定位，跟踪伺服系统可以在其中一个轨道上关闭。

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