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公开(公告)号：US07782721B2
公开(公告)日：2010-08-24
申请号：US09950398
申请日：2001-09-10
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。
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2.发明授权Calibration storage methods for a digital focus and tracking servo system with calibration 有权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
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。
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公开(公告)号：US07593300B2
公开(公告)日：2009-09-22
申请号：US09950393
申请日：2001-09-10
IPC分类号： G11B7/00
CPC分类号： G11B7/0945 , G11B7/0946 , G11B7/0948
摘要： An off-format condition in a digital tracking servo is presented. An off-format condition can be detected by low pass filtering a tracking control signal, detecting a DC level over a threshold level, and indicating the off-format condition if the DC level is above the threshold level for a maximum number of cycles.
摘要翻译： 提出了数字跟踪伺服中的非格式化条件。 通过对跟踪控制信号进行低通滤波，检测超过阈值电平的DC电平，以及如果DC电平高于阈值电平以指示最大数量的周期，则可指示离格式条件。
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公开(公告)号：US07057983B2
公开(公告)日：2006-06-06
申请号：US09951331
申请日：2001-09-10
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.
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公开(公告)号：US07023776B2
公开(公告)日：2006-04-04
申请号：US09950541
申请日：2001-09-10
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.
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6.发明授权Tracking and focus servo system with error signal inverse non-linearity calibration 失效跟踪和聚焦伺服系统，具有误差信号反向非线性校准公开(公告)号：US06965547B2
公开(公告)日：2005-11-15
申请号：US09950409
申请日：2001-09-10
CPC分类号： G11B7/0945 , G11B7/094 , G11B7/0941
摘要： A digital servo system of an optical disk drive with a calibrated inverse non-linearity function is disclosed. A look-up table is determined, for example, with a focus error signal gain corresponding with a focus error signal offset so that the response of the focus servo system is substantially linear. Additionally, the look-up table can include tracking error signal gain, tracking error signal offset, or tracking loop gain parameters corresponding with the focus error signal offset.
摘要翻译： 公开了具有校准的反向非线性函数的光盘驱动器的数字伺服系统。 例如，利用与聚焦误差信号偏移相对应的聚焦误差信号增益来确定查找表，使得聚焦伺服系统的响应基本上是线性的。 此外，查找表可以包括对应于聚焦误差信号偏移的跟踪误差信号增益，跟踪误差信号偏移或跟踪环路增益参数。
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7.发明授权公开(公告)号：US07095685B2
公开(公告)日：2006-08-22
申请号：US09951332
申请日：2001-09-10
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 disc drive includes a tracking actuator, and determines when the tracking actuator is positioned off a formatted portion of optical media in the disc drive. The optical media includes a pitted premastered area that cannot be overwritten and a grooved user-writeable area that can be overwritten. Tracking control effort is monitored to determine when the tracking actuator is in the off-format condition and whether tracking good or tracking bad is detected within a predetermined time period. An absolute value of the tracking control effort is generated and the absolute value of the tracking control effort is filtered. An off-format condition is indicated if the filtered value of the tracking control effort is not within a predetermined threshold value.
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公开(公告)号：US07054242B2
公开(公告)日：2006-05-30
申请号：US09951940
申请日：2001-09-10
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.
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9.发明授权System and method for controlling interrupts in a control system for an optical disc drive 失效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
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。
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公开(公告)号：US06958963B2
公开(公告)日：2005-10-25
申请号：US09951329
申请日：2001-09-10
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。
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