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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

US07079459B2 System and method for performing a spin motor startup operation 失效
公开(公告)号：US07079459B2
公开(公告)日：2006-07-18
申请号：US09951475
申请日：2001-09-10
申请人： Charles R. Watt , Christopher J. Turner
发明人： Charles R. Watt , Christopher J. Turner
IPC分类号： G11B15/18
CPC分类号： G11B7/0948 , G11B7/08505 , G11B7/0938 , G11B19/20 , G11B19/28
摘要： A system and method for controlling operation of a motor system that addresses the design challenges for the small form factor optical disk system. The present invention includes starting the operation of a motor including windings and a rotor; placing the motor in a first operational state; driving the motor from the first operational state to a second operational state; and sensing a variation in an electrical waveform induced by driving of the motor to determine a cycle period from which the speed of the motor can be determined.

4. 发明授权

US06898170B2 PMAD/PSA digital feedback system 失效
标题翻译： PMAD / PSA数字反馈系统
公开(公告)号：US06898170B2
公开(公告)日：2005-05-24
申请号：US09951325
申请日：2001-09-10
申请人： Charles R. Watt , Christopher J. Turner
发明人： Charles R. Watt , Christopher J. Turner
IPC分类号： G11B7/085 , G11B7/09 , G11B7/095 , G11B7/12 , G11B7/13 , G11B7/135 , G11B19/247 , 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 , G11B19/247 , G11B19/28
摘要： A system and method for controlling operation of a motor system that addresses the design challenges for the small form factor optical disk system. The control system can be operable to obtain digital feedback from a spin motor. The present invention includes detecting data representing a position on an optical medium and determining a detection rate; comparing the detection rate to a reference rate to provide an error rate; generating an output command in response to the error rate to provide a drive output which commands a voltage applied to a spin motor to adjust the spin speed of said spin motor.
摘要翻译：一种用于控制电机系统的操作的系统和方法，其解决了小尺寸光盘系统的设计挑战。该控制系统可操作以从旋转马达获得数字反馈。本发明包括检测表示光学介质上的位置并确定检测率的数据; 将检测率与参考速率进行比较以提供错误率; 产生响应于错误率的输出命令，以提供驱动输出，该驱动输出命令施加到旋转马达的电压来调节所述旋转马达的旋转速度。

5. 发明授权

US06364234B1 Tape loop/slack prevention method and apparatus for tape drive 失效
标题翻译：磁带循环/松弛预防方法和磁带驱动装置
公开(公告)号：US06364234B1
公开(公告)日：2002-04-02
申请号：US09522531
申请日：2000-03-10
申请人： Michael Donald Langiano , Christopher J. Turner
发明人： Michael Donald Langiano , Christopher J. Turner
IPC分类号： G11B1546
CPC分类号： G11B15/28 , G11B15/43
摘要： A capstan controlled tape transport mechanism that includes a tape tension controller for preventing tape slack in the tape path is presented. The transport mechanism includes a capstan, a spinnable reel, and a reel motor which controls the speed of revolution of the reel in response to a reel motor voltage/current. The spinning of the reel results in the winding of the tape around the reel to generate a tape stack whose radius varies according to the amount of tape wound around the reel hub. Each revolution of the reel generates a fixed number of reel tach pulses per reel revolution. The spinnable capstan controls the transport of tape across the capstan in the direction of the reel, generating a fixed number of capstan tach pulses per capstan revolution. The tape tension controller calculates a target count representing the expected number of capstan tach pulses per reel tach pulse based on the current tape stack radius, and monitors the received number of capstan tachs per received reel tach at the current tape stack radius. If the received number of capstan tachs exceeds the target count, the tape tension controller increases the reel motor voltage/current to cause the reel to spin faster to take up any existing slack in the tape path. Once the tape tension controller starts to receive reel tach within the target number of capstan tachs for the given tape stack radius, any existing adjustment voltage is ramped back down to the nominal reel motor voltage/current.
摘要翻译：提供了一种主导控制的磁带传送机构，其包括用于防止磁带路径中的磁带松弛的磁带张力控制器。传送机构包括主导轴，可旋转卷轴和卷轴马达，其响应于卷轴马达电压/电流来控制卷轴的转速。卷轴的旋转导致磁带缠绕在卷轴上以产生磁带叠层，磁带堆的半径根据卷绕在磁带盘毂上的磁带的数量而变化。每卷卷轴的每一圈都会产生一个固定数量的卷轴旋转每卷轴旋转。可旋转的主导轴控制带子沿卷轴的方向跨过绞盘的传送，产生固定数量的绞盘旋转。磁带张力控制器基于当前的磁带堆叠半径来计算表示每个卷轴脉冲的绞盘脉冲的预期数量的目标计数，并且以当前磁带堆叠半径监视每个接收到的磁带盘的接收的主导轴数量。如果接收到的绞盘数量超过目标计数，则磁带张力控制器增加卷轴电机电压/电流，使卷轴旋转更快以占据磁带路径中的任何现有松弛。一旦磁带张力控制器开始在给定磁带堆叠半径的目标数量的主导轴tachs内接收卷轴，则任何现有的调整电压都会斜降回到标称卷轴电机电压/电流。

6. 发明授权

US07593300B2 Digital tracking servo system with off-format detection 失效
标题翻译：数字跟踪伺服系统，具有离格式检测功能
公开(公告)号：US07593300B2
公开(公告)日：2009-09-22
申请号：US09950393
申请日：2001-09-10
申请人： Ron J. Kadlec , Christopher J. Turner
发明人： Ron J. Kadlec , Christopher J. Turner
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。

7. 发明授权

US07116621B2 System and method for handling commands in an optical disc drive 有权
公开(公告)号：US07116621B2
公开(公告)日：2006-10-03
申请号：US09951931
申请日：2001-09-10
申请人： Christopher J. Turner , Michael B. Propps
发明人： Christopher J. Turner , Michael B. Propps
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： An optical disc drive waits to receive a command to perform a function on 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. Once a command is received, one portion of the disc drive processes the command while another portion of the disc drive monitors the processing of the command and waits until the command is processed. If an error condition is detected while processing the command, the disc drive generates an event request such as a notify event request, a focus event request, a spin event request, and a tracking event request. When an event issues, the disc drive interrupts processing of the command and attempts to recover from the error condition. The state of the disc drive when the requested event was received is saved before attempting to recover from the error condition. If the recovery attempt is successful, the saved state of the disc drive is restored, and the interrupted command continues to be processed at the point where the interruption occurred. A command finished event is issued when the command is complete. If the recovery attempt was not successful, the interrupted command is replaced with a servo abort command to terminate the interrupted command.

8. 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.

9. 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.

10. 发明授权

US06965547B2 Tracking and focus servo system with error signal inverse non-linearity calibration 失效
标题翻译：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
申请人： Ron J. Kadlec , Christopher J. Turner , Hans B. Wach
发明人： Ron J. Kadlec , Christopher J. Turner , Hans B. Wach
IPC分类号： G11B7/00 , G11B7/09 , G11B7/095
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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