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1. 发明申请

US20100235565A1 APPARATUS AND METHOD TO PROTECT METADATA AGAINST UNEXPECTED POWER DOWN 失效
标题翻译：防止意外掉电的元数据的装置和方法
公开(公告)号：US20100235565A1
公开(公告)日：2010-09-16
申请号：US12619938
申请日：2009-11-17
申请人： Luan Ton-That , Lau Nguyen , Gwoyuh Hwu
发明人： Luan Ton-That , Lau Nguyen , Gwoyuh Hwu
IPC分类号： G06F12/00 , G06F12/10 , G06F12/02
CPC分类号： G06F12/0246 , G06F11/1441 , G06F2212/7207
摘要： A system includes first memory configured to store first metadata to associate logical addresses with physical addresses. Second memory is configured to include the physical addresses, to store first data based on the physical addresses, and to store portions of the first metadata when a status of a predetermined group of the physical addresses is changed. A recovery module is configured to update the first metadata based on the portions of the first metadata stored in the second memory.
摘要翻译：系统包括被配置为存储第一元数据以将逻辑地址与物理地址相关联的第一存储器。第二存储器被配置为包括物理地址，以基于物理地址存储第一数据，并且当物理地址的预定组的状态改变时存储第一元数据的部分。恢复模块被配置为基于存储在第二存储器中的第一元数据的部分来更新第一元数据。

2. 发明授权

US08572309B2 Apparatus and method to protect metadata against unexpected power down 失效
标题翻译：保护元数据防止意外断电的装置和方法
公开(公告)号：US08572309B2
公开(公告)日：2013-10-29
申请号：US12619938
申请日：2009-11-17
申请人： Luan Ton-That , Lau Nguyen , Gwoyuh Hwu
发明人： Luan Ton-That , Lau Nguyen , Gwoyuh Hwu
IPC分类号： G06F12/00 , G06F12/10 , G06F12/02
CPC分类号： G06F12/0246 , G06F11/1441 , G06F2212/7207
摘要： A system includes first memory configured to store first metadata to associate logical addresses with physical addresses. Second memory is configured to include the physical addresses, to store first data based on the physical addresses, and to store portions of the first metadata when a status of a predetermined group of the physical addresses is changed. A recovery module is configured to update the first metadata based on the portions of the first metadata stored in the second memory.
摘要翻译：系统包括被配置为存储第一元数据以将逻辑地址与物理地址相关联的第一存储器。第二存储器被配置为包括物理地址，以基于物理地址存储第一数据，并且当物理地址的预定组的状态改变时存储第一元数据的部分。恢复模块被配置为基于存储在第二存储器中的第一元数据的部分来更新第一元数据。

3. 发明授权

US08886870B2 Memory access table saving and restoring system and methods 有权
标题翻译：内存访问表保存和恢复系统和方法
公开(公告)号：US08886870B2
公开(公告)日：2014-11-11
申请号：US13110517
申请日：2011-05-18
申请人： Jason Adler , Perry Neos , Luan Ton-That , Gwoyuh Hwu
发明人： Jason Adler , Perry Neos , Luan Ton-That , Gwoyuh Hwu
IPC分类号： G06F12/00 , G06F12/02
CPC分类号： G06F11/1435 , G06F11/1451 , G06F12/0246 , G06F2201/84 , G11C14/0018 , G11C14/0063
摘要： A system includes a first memory configured to store a first lookup table (LUT) with first metadata. A second memory is configured to store a second LUT with second metadata, wherein the first metadata includes a first mapping between logical addresses and physical addresses. The second metadata includes a second mapping between the logical addresses and the physical addresses. A control module is configured to update the first metadata. The control module is configured to update segments of the second metadata based on the first metadata at respective predetermined times. Each of the segments refers to a predetermined number of entries of the second LUT.
摘要翻译：系统包括被配置为存储具有第一元数据的第一查找表（LUT）的第一存储器。第二存储器被配置为存储具有第二元数据的第二LUT，其中第一元数据包括逻辑地址和物理地址之间的第一映射。第二元数据包括逻辑地址和物理地址之间的第二映射。控制模块被配置为更新第一元数据。控制模块被配置为在各个预定时间基于第一元数据更新第二元数据的段。每个段涉及第二LUT的预定数量的条目。

4. 发明申请

US20110296123A1 MEMORY ACCESS TABLE SAVING AND RESTORING SYSTEM AND METHODS 有权
标题翻译：存储器访问表保存和恢复系统和方法
公开(公告)号：US20110296123A1
公开(公告)日：2011-12-01
申请号：US13110517
申请日：2011-05-18
申请人： Jason Adler , Perry Neos , Luan Ton-That , Gwoyuh Hwu
发明人： Jason Adler , Perry Neos , Luan Ton-That , Gwoyuh Hwu
IPC分类号： G06F12/00
CPC分类号： G06F11/1435 , G06F11/1451 , G06F12/0246 , G06F2201/84 , G11C14/0018 , G11C14/0063
摘要： A system includes a first memory configured to store a first lookup table (LUT) with first metadata. A second memory is configured to store a second LUT with second metadata, wherein the first metadata includes a first mapping between logical addresses and physical addresses. The second metadata includes a second mapping between the logical addresses and the physical addresses. A control module is configured to update the first metadata. The control module is configured to update segments of the second metadata based on the first metadata at respective predetermined times. Each of the segments refers to a predetermined number of entries of the second LUT.
摘要翻译：系统包括被配置为存储具有第一元数据的第一查找表（LUT）的第一存储器。第二存储器被配置为存储具有第二元数据的第二LUT，其中第一元数据包括逻辑地址和物理地址之间的第一映射。第二元数据包括逻辑地址和物理地址之间的第二映射。控制模块被配置为更新第一元数据。控制模块被配置为在各个预定时间基于第一元数据更新第二元数据的段。每个段涉及第二LUT的预定数量的条目。

5. 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.

6. 发明申请

US20120303873A1 METHOD FOR STORAGE DEVICES TO ACHIEVE LOW WRITE AMPLIFICATION WITH LOW OVER PROVISION 有权
标题翻译：存储设备的方法，用于实现低写扩频功能
公开(公告)号：US20120303873A1
公开(公告)日：2012-11-29
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： G06F12/00
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.
摘要翻译：固态驱动器（SSD）包括SSD控制模块，其被配置为确定对应于根据频率更新存储在与SSD相关联的相应逻辑地址中的数据的频率和形成逻辑地址组的频率，以及配置的存储器控制模块基于组将数据重写到SSD存储区域的块中的物理地址。

7. 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。

8. 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。

9. 发明授权

US08767340B1 Spiral band end detection 有权
标题翻译：螺旋带末端检测
公开(公告)号：US08767340B1
公开(公告)日：2014-07-01
申请号：US13494487
申请日：2012-06-12
申请人： Perry Neos , Luan Ton-That , Man Cheung
发明人： Perry Neos , Luan Ton-That , Man Cheung
IPC分类号： G11B21/02 , G11B5/596 , G11B15/12
CPC分类号： G11B5/59661 , G11B5/5526 , G11B5/5534 , G11B5/5543 , G11B5/596 , G11B5/59638
摘要： Methods, systems and computer program products for detecting an end of a reference spiral band are described. A first portion of servo information may be written on a disk using the reference spiral band. By detecting an end of a reference spiral band, a new reference spiral band may be launched. A read/write head of a hard disk drive may subsequently use the new spiral band to write the remaining portion of the servo information, which aids the writing of data tracks on the disk.
摘要翻译：描述了用于检测参考螺旋带的末端的方法，系统和计算机程序产品。伺服信息的第一部分可以使用参考螺旋带写在盘上。通过检测参考螺旋带的结束，可以启动新的参考螺旋带。硬盘驱动器的读/写头可以随后使用新的螺旋带来写入伺服信息的剩余部分，这有助于将数据轨迹写入盘上。

10. 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。

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