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1. 发明申请

US20070206319A1 Method for measuring actuator velocity during self-servo-write 有权
标题翻译：在自伺服写入期间测量执行器速度的方法
公开(公告)号：US20070206319A1
公开(公告)日：2007-09-06
申请号：US11544253
申请日：2006-10-09
申请人： David Rutherford , Luan Ton-That
发明人： David Rutherford , Luan Ton-That
IPC分类号： G11B5/596
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666
摘要： A system comprises a positioning module, a frequency measuring module, a simulation module, and a control module. The positioning module positions an actuator arm adjacent to a track to read spirals that are prewritten using current of a predetermined frequency. The frequency measuring module measures a first frequency of sync marks of the spirals when the actuator arm is positioned adjacent to the track. The simulation module calculates a second frequency of the sync marks when the actuator arm moves at a predetermined actuator velocity. The control module calculates an actuator velocity at which the spirals are prewritten based on the first frequency, the second frequency, and the predetermined actuator velocity.
摘要翻译：系统包括定位模块，频率测量模块，模拟模块和控制模块。定位模块将致动器臂定位成与轨道相邻，以读取使用预定频率的电流预写的螺旋。当致动器臂位于轨道附近时，频率测量模块测量螺旋的同步标记的第一频率。当致动器臂以预定的致动器速度移动时，模拟模块计算同步标记的第二频率。控制模块基于第一频率，第二频率和预定的致动器速度来计算螺旋预先写入的致动器速度。

2. 发明授权

US08681449B1 Calibrating servos 有权
标题翻译：校准伺服
公开(公告)号：US08681449B1
公开(公告)日：2014-03-25
申请号：US13474584
申请日：2012-05-17
申请人： Jason Adler , David Rutherford , Man Cheung , Perry Neos , Luan Ton-That
发明人： Jason Adler , David Rutherford , Man Cheung , Perry Neos , Luan Ton-That
IPC分类号： G11B21/02 , G11B5/596 , G11B5/09
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666 , G11B2020/1281 , G11B2220/2516
摘要： Methods, systems, and apparatus, including computer program products, are described for calibrating servos, and in some implementations for calibrating spiral servos for use in self servo write processes. In one aspect, a method is provided that includes measuring a slope of a spiral written to a machine readable medium, and adjusting a parameter in accordance with the measured slope to calibrate spacing of servo tracks, with respect to variation between a target slope and the measured slope for the spiral, for writing the servo tracks to the machine readable medium using the spiral as a reference and the adjusted parameter to generate a same radial spacing between servo tracks from spirals with different slopes.
摘要翻译：描述了包括计算机程序产品在内的方法，系统和装置，用于校准伺服系统，并且在一些实施例中用于校准用于自伺服写入过程的螺旋伺服。在一个方面，提供了一种方法，其包括测量写入机器可读介质的螺旋线的斜率，并且根据所测量的斜率调整参数以校准伺服轨道的间距，相对于目标斜率和用于螺旋的测量斜率，用于使用螺旋作为参考将伺服轨迹写入机器可读介质，并且调整的参数在具有不同斜率的螺旋之间产生在伺服轨道之间相同的径向间隔。

3. 发明授权

US08194343B1 Calibrating servos 有权
标题翻译：校准伺服
公开(公告)号：US08194343B1
公开(公告)日：2012-06-05
申请号：US12838016
申请日：2010-07-16
申请人： Jason Adler , David Rutherford , Man Cheung , Perry Neos , Luan Ton-That
发明人： Jason Adler , David Rutherford , Man Cheung , Perry Neos , Luan Ton-That
IPC分类号： G11B21/02 , G11B5/596 , G11B5/09
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666 , G11B2020/1281 , G11B2220/2516
摘要： Systems, methods, and apparatuses, including computer program products, are described for, in at least one implementation, determining a measured slope of a spiral, calibrating radial spacing between servo tracks according to a relationship between a target slope and the measured slope, wherein an amount of calibration for the radial spacing varies directly with the relationship between the target slope and the measured slope, and generating servo tracks according to the calibrated radial spacing.
摘要翻译：在至少一个实施方案中，描述了包括计算机程序产品的系统，方法和装置，其根据目标斜率和测量的斜率之间的关系确定螺旋的测量斜率，校准伺服轨道之间的径向间距，其中用于径向间隔的校准量随目标斜率和测量斜率之间的关系直接变化，并根据校准的径向间距产生伺服轨迹。

4. 发明授权

US07567404B1 Method for measuring actuator velocity during self-servo-write 有权
标题翻译：在自伺服写入期间测量执行器速度的方法
公开(公告)号：US07567404B1
公开(公告)日：2009-07-28
申请号：US12077582
申请日：2008-03-20
申请人： David Rutherford , Luan Ton-That
发明人： David Rutherford , Luan Ton-That
IPC分类号： G11B21/08
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666
摘要： A system comprises a positioning module that positions an actuator arm to read spirals that are prewritten. A frequency measuring module measures a first frequency of sync marks of said spirals. An estimation module calculates a second frequency of said sync marks when said actuator arm moves at a predetermined actuator velocity. A control module calculates an actuator velocity at which said spirals are prewritten based on said first frequency, said second frequency, and said predetermined actuator velocity.
摘要翻译：系统包括定位模块，其定位致动器臂以读取预先写入的螺旋。频率测量模块测量所述螺旋的同步标记的第一频率。当所述致动器臂以预定的致动器速度移动时，估计模块计算所述同步标记的第二频率。控制模块基于所述第一频率，所述第二频率和所述预定的致动器速度来计算所述螺旋预先写入的致动器速度。

5. 发明授权

US07349171B2 Method for measuring actuator velocity during self-servo-write 有权
标题翻译：在自伺服写入期间测量执行器速度的方法
公开(公告)号：US07349171B2
公开(公告)日：2008-03-25
申请号：US11544253
申请日：2006-10-09
申请人： David Rutherford , Luan Ton-That
发明人： David Rutherford , Luan Ton-That
IPC分类号： G11B21/08
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666
摘要： A system comprises a positioning module, a frequency measuring module, a simulation module, and a control module. The positioning module positions an actuator arm adjacent to a track to read spirals that are prewritten using current of a predetermined frequency. The frequency measuring module measures a first frequency of sync marks of the spirals when the actuator arm is positioned adjacent to the track. The simulation module calculates a second frequency of the sync marks when the actuator arm moves at a predetermined actuator velocity. The control module calculates an actuator velocity at which the spirals are prewritten based on the first frequency, the second frequency, and the predetermined actuator velocity.
摘要翻译：系统包括定位模块，频率测量模块，模拟模块和控制模块。定位模块将致动器臂定位成与轨道相邻，以读取使用预定频率的电流预写的螺旋。当致动器臂位于轨道附近时，频率测量模块测量螺旋的同步标记的第一频率。当致动器臂以预定的致动器速度移动时，模拟模块计算同步标记的第二频率。控制模块基于第一频率，第二频率和预定的致动器速度来计算螺旋预先写入的致动器速度。

6. 发明授权

US08493684B1 Calibrating voice coil motors 有权
标题翻译：校准音圈电机
公开(公告)号：US08493684B1
公开(公告)日：2013-07-23
申请号：US13194724
申请日：2011-07-29
申请人： Luan Ton-That , David Rutherford
发明人： Luan Ton-That , David Rutherford
IPC分类号： G11B5/55
CPC分类号： G11B5/5534
摘要： Methods, systems, and apparatus, including computer program products, are described for calibrating voice coil motors. In one aspect, a method is provided that includes seeking toward an outer diameter of a machine readable medium from a target servo track to a blank portion of the machine readable medium. A radial velocity of an actuator is determined after accelerating the actuator to a target radial velocity. The radial velocity is compared to the target radial velocity, and a current, that is used to controllably modify the radial velocity of the actuator if the radial velocity is different from the target radial velocity, is calibrated.
摘要翻译：描述了用于校准音圈电机的方法，系统和装置，包括计算机程序产品。在一个方面，提供了一种方法，其包括从目标伺服轨迹到机器可读介质的空白部分寻求机器可读介质的外径。在将致动器加速到目标径向速度之后确定致动器的径向速度。将径向速度与目标径向速度进行比较，并且如果径向速度与目标径向速度不同，则用于可控地修改致动器的径向速度的电流被校准。

7. 发明授权

US07995305B1 Calibrating voice coil motors 有权
标题翻译：校准音圈电机
公开(公告)号：US07995305B1
公开(公告)日：2011-08-09
申请号：US12192973
申请日：2008-08-15
申请人： Luan Ton-That , David Rutherford
发明人： Luan Ton-That , David Rutherford
IPC分类号： G11B5/55
CPC分类号： G11B5/5534
摘要： Methods, systems, and apparatus, including computer program products, are described for calibrating voice coil motors. In one aspect, a method is provided that includes seeking toward an outer diameter of a machine readable medium from a target servo track to a blank portion of the machine readable medium. A radial velocity of an actuator is determined after accelerating the actuator to a target radial velocity. The radial velocity is compared to the target radial velocity, and a current, that is used to controllably modify the radial velocity of the actuator if the radial velocity is different from the target radial velocity, is calibrated.
摘要翻译：描述了用于校准音圈电机的方法，系统和装置，包括计算机程序产品。在一个方面，提供了一种方法，其包括从目标伺服轨迹到机器可读介质的空白部分寻求机器可读介质的外径。在将致动器加速到目标径向速度之后确定致动器的径向速度。将径向速度与目标径向速度进行比较，并且如果径向速度与目标径向速度不同，则用于可控地修改致动器的径向速度的电流被校准。

8. 发明授权

US07773335B1 Calibrating servos 有权
标题翻译：校准伺服
公开(公告)号：US07773335B1
公开(公告)日：2010-08-10
申请号：US12192981
申请日：2008-08-15
申请人： Jason Adler , David Rutherford , Man Cheung , Perry Neos , Luan Ton-That
发明人： Jason Adler , David Rutherford , Man Cheung , Perry Neos , Luan Ton-That
IPC分类号： G11B21/02 , G11B5/596 , G11B5/09
CPC分类号： G11B5/59633 , G11B5/59661 , G11B5/59666 , G11B2020/1281 , G11B2220/2516
摘要： Methods, systems, and apparatus, including computer program products, are described for calibrating servos, and in some implementations for calibrating spiral servos for use in self-servo-write processes. In one aspect, a method is provided that includes determining a measured slope of a spiral, and calibrating radial spacing between servo tracks using the measured slope and a target slope.
摘要翻译：描述了包括计算机程序产品在内的方法，系统和装置，用于校准伺服系统，并且在一些实施例中用于校准用于自伺服写入过程的螺旋伺服。在一个方面，提供了一种方法，其包括确定螺旋的测量斜率，以及使用所测量的斜率和目标斜率校准伺服轨道之间的径向间距。

9. 发明授权

US07944638B1 Method and apparatus for scheduling spiral interrupts for self-servo write 有权
标题翻译：用于调度自伺服写入的螺旋中断的方法和装置
公开(公告)号：US07944638B1
公开(公告)日：2011-05-17
申请号：US12643844
申请日：2009-12-21
申请人： Man Cheung , Perry Neos , Luan Ton-That
发明人： Man Cheung , Perry Neos , Luan Ton-That
IPC分类号： G11B5/09 , G11B20/12
CPC分类号： G11B20/1252 , G11B5/59633 , G11B5/59661 , G11B5/59666 , G11B20/10009 , G11B20/10222 , G11B2020/1282 , G11B2220/2516
摘要： A method for dynamic spiral ISR scheduling determines a dynamic delay with spiral to spiral spacing information of a disk, so as to ensure that the sum of a primary ISR time and a secondary ISR time does not exceed the wedge to wedge time. The ISR time may be scheduled to start after a delay for the sum of a static delay and the dynamic delay from an edge. A system for dynamic spiral ISR scheduling uses a dynamic delay determining unit to determine a dynamic delay, and an ISR scheduling unit to schedule the start of a secondary spiral set ISR based on a sum of the dynamic delay and a static delay.
摘要翻译：一种用于动态螺旋ISR调度的方法确定了磁盘的螺旋到螺旋间隔信息的动态延迟，以确保主ISR时间和辅助ISR时间之和不超过楔形到楔形时间。 ISR时间可以被调度为在静态延迟和来自边缘的动态延迟之和的延迟之后开始。用于动态螺旋ISR调度的系统使用动态延迟确定单元来确定动态延迟，ISR调度单元基于动态延迟和静态延迟的和来调度辅助螺旋集ISR的开始。

10. 发明授权

US09678676B2 Method for storage devices to achieve low write amplification with low over provision 有权
公开(公告)号：US09678676B2
公开(公告)日：2017-06-13
申请号：US13461899
申请日：2012-05-02
申请人： Lau Nguyen , Perry Neos , Luan Ton-That
发明人： Lau Nguyen , Perry Neos , Luan Ton-That
IPC分类号： G06F12/02 , G06F3/06
CPC分类号： G06F3/0616 , G06F3/0652 , G06F3/0679 , G06F12/0246 , G06F2212/7209
摘要： A solid state drive (SSD) includes an SSD control module configured to determine frequencies corresponding to how often data stored in respective logical addresses associated with the SSD is updated and form groups of the logical addresses according to the frequencies, and a memory control module configured to rewrite the data to physical addresses in blocks of an SSD storage region based on the groups.

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