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公开(公告)号：US6097563A
公开(公告)日：2000-08-01
申请号：US994185
申请日：1997-12-19
CPC分类号： G11B5/59688 , G11B15/125
摘要： A method and apparatus for performing head switch operations in a magnetic disk system with a magnetic disk device that is segmented into a plurality of cylinders. The cylinders are grouped into an inner zone, a middle zone, and an outer zone. The inner zone is near the innermost area of the magnetic disk device. The outer zone is near the outermost area of the magnetic disk device. The middle zone is in between the inner zone and the outer zone. The head switch is performed from a current head at a current cylinder to a target head at a target cylinder. Prior to the head switch, the system determines if the current cylinder is in either the inner zone or the outer zone. If the current cylinder is in either the inner zone or the outer zone, then the system determines if the target cylinder is in either the inner zone or the outer zone. If the target cylinder is in either the inner zone or the outer zone, then the system seeks the current head to the middle zone and then performs the head switch. If the target cylinder is in the middle zone, then the system seeks the current head to the target cylinder and then performs the head switch. If the current cylinder is in the middle zone, then the system performs the head switch without seeking. After the head switch, the system seeks the target head to the target cylinder.
摘要翻译： 一种在具有分段成多个气缸的磁盘装置的磁盘系统中执行磁头开关操作的方法和装置。 气瓶分为内区，中区和外区。 内部区域靠近磁盘装置的最内侧区域。 外部区域在磁盘装置的最外侧区域附近。 中间区域位于内部区域和外部区域之间。 磁头开关从当前磁头的当前磁头执行到目标磁鼓的目标磁头。 在头开关之前，系统确定当前气缸是处于内区还是外区。 如果当前气缸位于内部区域或外部区域中，则系统确定目标气缸是位于内部区域还是外部区域中。 如果目标气缸位于内部区域或外部区域中，则系统将当前的头部朝向中间区域，然后执行头部开关。 如果目标气缸位于中间区域，则系统将目标气缸朝向目标液压缸，然后执行磁头开关。 如果当前圆柱体处于中间区域，则系统执行头切换而不寻求。 在磁头开关后，系统将目标磁头搜索到目标气缸。
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公开(公告)号：US6163424A
公开(公告)日：2000-12-19
申请号：US429408
申请日：1999-10-28
CPC分类号： G11B5/59688 , G11B15/125
摘要： A method and apparatus for performing head switch operations in a magnetic disk system having a magnetic disk device that is segmented into a plurality of cylinders, which cylinders are grouped into an inner zone, a middle zone, and an outer zone. The inner zone is near the innermost area of the magnetic disk device. The outer zone is near the outermost area of the magnetic disk device. The middle zone is in between the inner zone and the outer zone. The head switch is performed from a current head to a target head. Prior to the head switch, the system determines if the current cylinder is in either the inner zone or the outer zone. When the current cylinder is in either the inner zone or the outer zone, the system seeks the current head to the middle zone, whereupon the system performs a head switch from the current head to the target head. When the current cylinder is not found to be in either the inner zone or the outer zone, i.e. when the current cylinder is in the middle zone, then the system performs the head switch from the current head to the target head without first performing a seek. After either of the above described head switch operations, the system seeks the target head to the target cylinder, when necessary.
摘要翻译： 一种用于在具有被分割成多个气缸的磁盘装置的磁盘系统中执行磁头开关操作的方法和装置，该磁盘分组成内部区域，中间区域和外部区域。 内部区域靠近磁盘装置的最内侧区域。 外部区域在磁盘装置的最外侧区域附近。 中间区域位于内部区域和外部区域之间。 磁头开关从当前磁头执行到目标磁头。 在头开关之前，系统确定当前气缸是处于内区还是外区。 当当前气缸处于内部区域或外部区域中时，系统将当前磁头搜索到中间区域，于是系统执行从当前磁头到目标磁头的磁头切换。 当当前的气缸未被发现在内部区域或外部区域中时，即当前气缸处于中间区域时，系统会执行头部从当前头部到目标头部的切换，而无需首先执行寻道 。 在上述头开关操作中的任一个之后，当需要时，系统将目标头朝向目标气缸。
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3.发明授权Method and apparatus for accurately aligning a series of detection windows with a synchronization pattern in a data storage device 有权用于在数据存储装置中精确地对准一系列检测窗口与同步模式的方法和装置公开(公告)号：US06298101B1
公开(公告)日：2001-10-02
申请号：US09222509
申请日：1998-12-29
申请人： Lance Robert Carlson
发明人： Lance Robert Carlson
IPC分类号： H04L2706
CPC分类号： G11B20/1419 , G11B27/3027 , H04L7/04 , H04L7/08
摘要： An invention for more accurately initiating the generation of detection windows for detecting data within a stream of data pulses is disclosed. A high frequency clock, typically operating at rate corresponding to a multiple of the nominal clock rate (e.g., two or three times, is used for a portion of a decoder system. In one embodiment, a down counter and a detection window generation component of the decoder system are clocked at the higher rate, while the remaining elements are clocked at the nominal clock rate. In this manner, the detection windows are more accurately initiated, while the remaining portions of the decoder system do not require the extra expense imposed of operating at the higher clock rate. Using the present invention, synchronization delay is minimized and detection windows are more accurately aligned with data pulses which reduces the error rate and improves performance of the decoder system.
摘要翻译： 公开了一种用于更精确地启动用于检测数据脉冲流内的数据的检测窗口的发明。 通常以对应于标称时钟速率的倍数（例如，两次或三次）的速率工作的高频时钟用于解码器系统的一部分。在一个实施例中，向下计数器和检测窗口生成部件 解码器系统以更高的速率被计时，而剩余的元件以标称时钟速率计时，这样，检测窗口更准确地启动，而解码器系统的其余部分不需要额外的费用 使用本发明，同步延迟最小化，并且检测窗口更准确地与数据脉冲对准，这降低了错误率并提高了解码器系统的性能。
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4.发明授权Method and apparatus for synchronizing a decoder circuit with a phase-encoded data signal in a data storage device 有权解码器电路与数据存储装置中的相位编码数据信号同步的方法和装置
公开(公告)号：US6167526A
公开(公告)日：2000-12-26
申请号：US222078
申请日：1998-12-29
申请人： Lance Robert Carlson
发明人： Lance Robert Carlson
CPC分类号： G11B20/10009 , G11B20/10 , H04L7/08
摘要： An invention for intelligently adjusting the timing of generation of a series of detection windows to maintain synchronization with the occurrence of data pulses within a stream of phase-encoded binary data is disclosed. In an embodiment of the present invention, thresholding logic is added to a limited response self-clocking decode phased locked loop to achieve a more robust data detection method and system, which is less susceptible and sensitive to noise error. In one embodiment of the system, an up/down counter is used to count to occurrence of late and early data pulses within their respective detection window, with the timing of the generated series of detection windows being adjusted when the value of this counter exceeds an upper or lower predetermined threshold value.
摘要翻译： 公开了一种用于智能地调整生成一系列检测窗口的定时的发明，以保持与相位编码的二进制数据流内的数据脉冲的发生同步。 在本发明的一个实施例中，阈值逻辑被添加到有限的响应自定时解码锁相环，以实现更加鲁棒的数据检测方法和系统，其对噪声误差较不敏感和敏感。 在该系统的一个实施例中，上/下计数器用于计数在它们各自的检测窗口内出现晚期和早期数据脉冲，当该计数器的值超过 上限或下限预定阈值。
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公开(公告)号：US06347017B1
公开(公告)日：2002-02-12
申请号：US09222061
申请日：1998-12-29
申请人： Lance Robert Carlson
发明人： Lance Robert Carlson
IPC分类号： G11B5596
CPC分类号： G11B5/59627
摘要： The invention is a servo compensation method and system for use in a disk storage system. The disk storage system experiences error that causes a head to become mis-aligned with the disk. The error comprises multiple spin-frequency harmonic run-out error and other servo position errors. During follow mode, a digital filter processes a position error signal to generate a compensation signal. The position error signal is comprised of components representative of the multiple spin-frequency harmonic run-out error and the other servo position errors. The compensation signal is comprised of components that cause the servo positioning system to compensate for the multiple spin-frequency harmonic run-out error and the other servo position errors. The digital filter also operates as an oscillator that provides an oscillating signal at multiples of the spin frequency of the disk during seek mode.
摘要翻译： 本发明是一种用于磁盘存储系统的伺服补偿方法和系统。 磁盘存储系统遇到导致磁头与磁盘错误对齐的错误。 该误差包括多个自旋频率谐波失真误差和其他伺服位置误差。 在跟随模式期间，数字滤波器处理位置误差信号以产生补偿信号。 位置误差信号由代表多个自旋频率谐波失控误差的部件和其他伺服位置误差组成。 补偿信号包括使伺服定位系统补偿多个自旋频率谐波失调误差和其他伺服位置误差的部件。 数字滤波器还作为振荡器，在寻道模式期间以盘的自旋频率的倍数提供振荡信号。
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公开(公告)号：US06175458B1
公开(公告)日：2001-01-16
申请号：US09222225
申请日：1998-12-29
申请人： Lance Robert Carlson
发明人： Lance Robert Carlson
IPC分类号： G11B509
CPC分类号： G11B19/247 , G11B5/59616 , G11B5/59655
摘要： A disk drive processing system controls a Servo Timing Mark (STM) detection window in disk drive during a head switch operation. In response to the head switch operation, the system disables a timer that closes the STM detection window during normal operation, and the system tracks the elapsed time from a time point. The system compares the elapsed time to a programmable limit value. The system resumes normal operation if an STM is detected before the elapsed time reaches the programmable limit value and initiates a recovery procedure if the elapsed time reaches the programmable limit value. Advantageously, the programmable limit value can be easily re-programmed if a larger STM detection window is required due to severe STM or head mis-alignment.
摘要翻译： 在磁头切换操作期间，磁盘驱动器处理系统控制磁盘驱动器中的伺服定时标记（STM）检测窗口。 响应于头开关操作，系统禁用在正常操作期间关闭STM检测窗口的定时器，并且系统跟踪从时间点起的经过时间。 系统将经过的时间与可编程极限值进行比较。 如果在经过时间达到可编程限制值之前检测到STM，则系统恢复正常操作，并且如果经过时间达到可编程限制值则启动恢复过程。 有利地，如果由于严重的STM或头错位而需要较大的STM检测窗口，则可编程极限值可以被容易地重新编程。
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公开(公告)号：US6088186A
公开(公告)日：2000-07-11
申请号：US960181
申请日：1997-10-29
申请人： Lance Robert Carlson
发明人： Lance Robert Carlson
CPC分类号： G11B21/106 , G11B5/5547 , G11B5/59627 , G11B5/5534 , G11B5/59605 , G11B5/59622 , G11B7/0941 , G11B7/0953
摘要： The invention is a servo compensation method and system for use in a disk storage system. The disk storage system experiences error that causes a head to become mis-aligned with the disk. The error comprises run-out error and other servo position errors. During follow mode, a digital filter processes a position error signal to generate a compensation signal. The position error signal is comprised of components representative of the run-out error and the other servo position errors. The compensation signal is comprised of components that cause the servo positioning system to compensate for the run-out error and the other servo position errors. The digital filter also operates as an oscillator that provides an oscillating signal the spin frequency of the disk during seek mode.
摘要翻译： 本发明是一种用于磁盘存储系统的伺服补偿方法和系统。 磁盘存储系统遇到导致磁头与磁盘错误对齐的错误。 误差包括跳动误差和其他伺服位置误差。 在跟随模式期间，数字滤波器处理位置误差信号以产生补偿信号。 位置误差信号由代表偏移误差和其他伺服位置误差的分量组成。 补偿信号包括使伺服定位系统补偿偏移误差和其他伺服位置误差的部件。 数字滤波器还作为振荡器工作，在寻道模式下提供振荡信号的磁盘自旋频率。
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