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1. 发明授权

US08499227B2 Memory quality monitor based compensation method and apparatus 有权
公开(公告)号：US08499227B2
公开(公告)日：2013-07-30
申请号：US12888585
申请日：2010-09-23
申请人： Bruce A. Liikanen , Gerald L. Cadloni , Larry J. Koudele , John L. Seabury , Stephen P. Van Aken , Guy R. Wagner
发明人： Bruce A. Liikanen , Gerald L. Cadloni , Larry J. Koudele , John L. Seabury , Stephen P. Van Aken , Guy R. Wagner
IPC分类号： H03M13/03
CPC分类号： G06F11/1076 , G06F11/08 , G06F11/1048 , G11C7/1006 , G11C11/5621 , G11C11/5642 , G11C11/5671 , G11C13/0033 , G11C13/0035 , G11C16/3431 , G11C16/349 , H03M13/1111 , H03M13/1515 , H03M13/152 , H03M13/3738 , H03M13/41 , H03M13/4138
摘要： In one embodiment, an encoder reads a set of data from memory cells to obtain retrieved data influenced by one or more distortion mechanisms as a result of having been stored. A quality metric is generated responsive to the retrieved data that changes in value responsive to differences between the user data and the associated retrieved data. A quality monitor establishes a relationship between a current value of the quality metric and a threshold value and monitors the relationship as being indicative of a degradation of the quality of the retrieved data, and selectively initiates an error response. In another embodiment, a correction value is iterated through a set of values as a quality metric is monitored such that the value of the quality metric which most closely approaches the value of the quality metric immediately subsequent to an initial writing of the data can be selected.

2. 发明申请

US20120079353A1 Memory Quality Monitor Based Compensation Method and Apparatus 有权
标题翻译：基于内存质量监测的补偿方法和装置
公开(公告)号：US20120079353A1
公开(公告)日：2012-03-29
申请号：US12888585
申请日：2010-09-23
申请人： Bruce A. Liikanen , Gerald L. Cadloni , Larry J. Koudele , John L. Seabury , Stephen P. Van Aken , Guy R. Wagner
发明人： Bruce A. Liikanen , Gerald L. Cadloni , Larry J. Koudele , John L. Seabury , Stephen P. Van Aken , Guy R. Wagner
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： G06F11/1076 , G06F11/08 , G06F11/1048 , G11C7/1006 , G11C11/5621 , G11C11/5642 , G11C11/5671 , G11C13/0033 , G11C13/0035 , G11C16/3431 , G11C16/349 , H03M13/1111 , H03M13/1515 , H03M13/152 , H03M13/3738 , H03M13/41 , H03M13/4138
摘要： In one embodiment, an encoder reads a set of data from memory cells to obtain retrieved data influenced by one or more distortion mechanisms as a result of having been stored. A quality metric is generated responsive to the retrieved data that changes in value responsive to differences between the user data and the associated retrieved data. A quality monitor establishes a relationship between a current value of the quality metric and a threshold value and monitors the relationship as being indicative of a degradation of the quality of the retrieved data, and selectively initiates an error response. In another embodiment, a correction value is iterated through a set of values as a quality metric is monitored such that the value of the quality metric which most closely approaches the value of the quality metric immediately subsequent to an initial writing of the data can be selected.
摘要翻译：在一个实施例中，编码器从存储器单元读取一组数据，以获得受到一个或多个失真机制影响的检索数据，作为已被存储的结果。响应于检索到的数据生成质量度量，该数据响应于用户数据和相关联的检索数据之间的差异而改变值。质量监视器建立质量度量的当前值与阈值之间的关系，并且将关系监视为指示检索数据质量的劣化，并且选择性地启动错误响应。在另一个实施例中，当监视质量度量时，校正值被迭代通过一组值，使得可以选择最紧密接近数据的初始写入之后的质量度量值的质量度量的值。

3. 发明申请

US20090241006A1 Bitwise Operations and Apparatus in a Multi-Level System 有权
标题翻译：多级系统中的按位操作和装置
公开(公告)号：US20090241006A1
公开(公告)日：2009-09-24
申请号：US12403546
申请日：2009-03-13
申请人： Bruce A. Liikanen , Stephen P. Van Aken , Gerald L. Cadloni , John L. Seabury , Robert B. Eisenhuth
发明人： Bruce A. Liikanen , Stephen P. Van Aken , Gerald L. Cadloni , John L. Seabury , Robert B. Eisenhuth
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H04L1/0041 , G06F11/1072 , H03M13/253 , H03M13/2936 , H03M13/353 , H04L63/0428
摘要： A system uses multi-level encoding where each symbol of a plurality of symbols represents more than one bit of information in a user data symbol stream for transfer using a multilevel transmission channel. The user data symbols are represented in a digital bitwise form such that each symbol is presented as a plurality of bits and each bit is subject to a different probability of error. An error correction procedure is applied based on the different error probability that is associated with each bit in the plurality. The channel can be configured to support a mosaic tile structure, each tile containing a channel symbol such that a selected tile has a collective error probability that is different from other tiles. Customized coding can be applied to the tile structure to allocate a selected amount of error correction power to the selected tile based on an overall available correction power.
摘要翻译：系统使用多级编码，其中多个符号的每个符号表示用于使用多级传输信道传送的用户数据符号流中的多于一位的信息。以数字逐位形式表示用户数据符号，使得每个符号被呈现为多个位，并且每个位受到不同的误差概率。基于与多个中的每个位相关联的不同误差概率应用纠错过程。通道可被配置为支持马赛克瓦片结构，每个瓦片包含通道符号，使得所选择的瓦片具有与其他瓦片不同的集体误差概率。可以将定制编码应用于瓦片结构，以基于总体可用校正功率将所选量的误差校正功率分配给所选择的瓦片。

4. 发明授权

US08627165B2 Bitwise operations and apparatus in a multi-level system 有权
标题翻译：多级系统中的按位操作和设备
公开(公告)号：US08627165B2
公开(公告)日：2014-01-07
申请号：US12403546
申请日：2009-03-13
申请人： Bruce A. Liikanen , Stephen P. Van Aken , Gerald L. Cadloni , John L. Seabury , Robert B Eisenhuth
发明人： Bruce A. Liikanen , Stephen P. Van Aken , Gerald L. Cadloni , John L. Seabury , Robert B Eisenhuth
IPC分类号： H03M13/00
CPC分类号： H04L1/0041 , G06F11/1072 , H03M13/253 , H03M13/2936 , H03M13/353 , H04L63/0428
摘要： A system uses multi-level encoding where each symbol of a plurality of symbols represents more than one bit of information in a user data symbol stream for transfer using a multilevel transmission channel. The user data symbols are represented in a digital bitwise form such that each symbol is presented as a plurality of bits and each bit is subject to a different probability of error. An error correction procedure is applied based on the different error probability that is associated with each bit in the plurality. The channel can be configured to support a mosaic tile structure, each tile containing a channel symbol such that a selected tile has a collective error probability that is different from other tiles. Customized coding can be applied to the tile structure to allocate a selected amount of error correction power to the selected tile based on an overall available correction power.
摘要翻译：系统使用多级编码，其中多个符号的每个符号表示用于使用多级传输信道传送的用户数据符号流中的多于一位的信息。以数字逐位形式表示用户数据符号，使得每个符号被呈现为多个位，并且每个位受到不同的误差概率。基于与多个中的每个位相关联的不同误差概率应用纠错过程。通道可被配置为支持马赛克瓦片结构，每个瓦片包含通道符号，使得所选择的瓦片具有与其他瓦片不同的集体误差概率。可以将定制编码应用于瓦片结构，以基于总体可用校正功率将所选量的误差校正功率分配给所选择的瓦片。

5. 发明申请

US20130166972A1 Apparatus and Methods of Programming Memory Cells using Adjustable Charge State Level(s) 有权
标题翻译：使用可调电荷状态级编程存储单元的装置和方法
公开(公告)号：US20130166972A1
公开(公告)日：2013-06-27
申请号：US13335291
申请日：2011-12-22
申请人： John L. Seabury , Bruce A. Liikanen
发明人： John L. Seabury , Bruce A. Liikanen
IPC分类号： G06F11/10 , G06F11/00
CPC分类号： G06F11/1068 , G06F11/076 , G06F11/1048 , G11C16/00 , G11C29/021 , G11C29/028
摘要： Apparatus and methods are disclosed, including a method of programming involving determining an error rate for the memory cells, and programming the memory cells using a charge state level for a charge state that is based at least in part on the determined error rate.
摘要翻译：公开了一种装置和方法，包括涉及确定存储器单元的错误率的编程方法，以及使用至少部分地基于所确定的错误率的充电状态级别来对存储器单元进行编程。

6. 发明授权

US08990644B2 Apparatus and methods of programming memory cells using adjustable charge state level(s) 有权
标题翻译：使用可调电荷状态电平编程存储单元的装置和方法
公开(公告)号：US08990644B2
公开(公告)日：2015-03-24
申请号：US13335291
申请日：2011-12-22
申请人： John L. Seabury , Bruce A. Liikanen
发明人： John L. Seabury , Bruce A. Liikanen
IPC分类号： G06F11/00 , G06F11/10
CPC分类号： G06F11/1068 , G06F11/076 , G06F11/1048 , G11C16/00 , G11C29/021 , G11C29/028
摘要： Apparatus and methods are disclosed, including a method of programming involving determining an error rate for the memory cells, and programming the memory cells using a charge state level for a charge state that is based at least in part on the determined error rate.
摘要翻译：公开了一种装置和方法，包括涉及确定存储器单元的错误率的编程方法，以及使用至少部分地基于所确定的错误率的充电状态级别来对存储器单元进行编程。

7. 发明授权

US07752491B1 Methods and structure for on-the-fly head depopulation in a dynamically mapped mass storage device 有权
标题翻译：在动态映射的大容量存储设备中的飞行头减少的方法和结构
公开(公告)号：US07752491B1
公开(公告)日：2010-07-06
申请号：US11583550
申请日：2006-10-19
申请人： Bruce A. Liikanen , John W. VanLaanen , Andrew W. Vogan
发明人： Bruce A. Liikanen , John W. VanLaanen , Andrew W. Vogan
IPC分类号： G06F11/00
CPC分类号： G06F11/2087 , G11B20/1883 , G11B2020/10759 , G11B2220/20 , G11B2220/2516
摘要： Methods and structures for providing on-the-fly head depopulation in a dynamically mapped storage device. In a dynamically mapped storage device in which all user supplied logical blocks are dynamically mapped by the storage device controller to physical disk blocks, features and aspects hereof allow on-the-fly head depopulation to protect data when a subsection of a storage device, such as a head of surface is failing. When the storage device detects that a head is failing, data may be migrated off the failing subsection into other subsections (e.g., a different head or surface) using mapping features and aspects hereof. Thus, the data on the failing subsection is still available should the subsection or head eventually fail.
摘要翻译：用于在动态映射的存储设备中提供飞行头减少的方法和结构。在其中所有用户提供的逻辑块由存储设备控制器动态地映射到物理磁盘块的动态映射存储设备中，其特征和方面允许在运行中减少头部以在存储设备的子部分（例如，作为表面的头脑是失败的。当存储设备检测到磁头发生故障时，数据可以使用其映射特征和方面从故障子部件迁移到其他子部分（例如，不同的磁头或表面）。因此，如果子部分或头部最终失败，则失败的子部分的数据仍然可用。

8. 发明授权

US07653847B1 Methods and structure for field flawscan in a dynamically mapped mass storage device 有权
标题翻译：动态映射大容量存储设备中现场瑕疵的方法和结构
公开(公告)号：US07653847B1
公开(公告)日：2010-01-26
申请号：US11583767
申请日：2006-10-19
申请人： Bruce A. Liikanen , Eric D. Mudama , John W. VanLaanen , Andrew W. Vogan
发明人： Bruce A. Liikanen , Eric D. Mudama , John W. VanLaanen , Andrew W. Vogan
IPC分类号： G11C29/00
CPC分类号： G01R33/1207
摘要： Methods and structures for performing field flawscan to reduce manufacturing costs of a dynamic mapped storage device. In a dynamic mapped storage device in which all user supplied logical blocks are dynamically mapped by the storage device controller to physical disk blocks, features and aspects hereof permit flawscan testing of a storage device to be completed substantially concurrently with processing write requests for its intended application. A fraction of the storage device may be certified by an initial flawscan performed during manufacturing testing. Statistical sampling sufficient to assure a high probability of achieving specified capacity may be performed to reduce manufacturing time and costs in testing. Final flawscan of the remainder of the storage locations may be performed substantially concurrently with processing of write requests after the device is installed for its intended application. Mapping features and aspects hereof allow the storage device controller to perform flawscan and write operations concurrently.
摘要翻译：用于执行现场扫描以降低动态映射存储设备的制造成本的方法和结构。在其中所有用户提供的逻辑块由存储设备控制器动态地映射到物理磁盘块的动态映射存储设备中，其特征和方面允许对处理对其预期应用的写入请求的存储设备进行大量同时完成的扫描测试。存储设备的一小部分可以通过在制造测试期间执行的初始扫描进行认证。可以执行足以确保实现特定容量的高概率的统计学抽样，以减少制造时间和测试成本。存储位置的剩余部分的最终的扫描可以在装置针对其预期应用安装之后基本上同时执行写入请求的处理。映射其特征和方面允许存储设备控制器同时执行扫描和写入操作。

9. 发明授权

US06115203A Efficient drive-level estimation of written-in servo position error 失效
标题翻译：写入伺服位置误差的高效驱动级估计
公开(公告)号：US06115203A
公开(公告)日：2000-09-05
申请号：US16552
申请日：1998-01-30
申请人： Hai T. Ho , Toan Q. Doan , Bruce A. Liikanen
发明人： Hai T. Ho , Toan Q. Doan , Bruce A. Liikanen
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： The invention relates to a disk drive servo apparatus, and method for implementing the same, that maintains a transducer on a substantially non-perturbed path despite the fact that the tracks were written in a perturbed manner by a servo track writer. The invention utilizes a non-causal filter to determine servo track writer repetitive run-out (STW.sub.-- RRO) values for each sector of each track at the drive level. The STW.sub.-- RRO values are stored, preferably in their respective servo sectors on the surface of the disk, for use during track following operations. During read and write operations, the STW.sub.-- RRO values are retrieved from storage and are used to generate position error signals necessary to maintain the transducer on the desired path.
摘要翻译：本发明涉及一种磁盘驱动器伺服装置及其实施方法，其将传感器维持在基本上不受干扰的路径上，尽管轨道以伺服轨道写入器以扰动方式写入。本发明利用非因果滤波器来确定在驱动级别的每个轨道的每个扇区的伺服轨迹写入器重复耗尽（STW-RRO）值。 STW-RRO值优选地存储在盘的表面上的它们各自的伺服扇区中，以便在跟踪操作期间使用。在读写操作期间，从存储器检索STW-RRO值，并用于产生将换能器保持在所需路径上所必需的位置误差信号。

10. 发明授权

US07685360B1 Methods and structure for dynamic appended metadata in a dynamically mapped mass storage device 有权
标题翻译：在动态映射的大容量存储设备中动态附加元数据的方法和结构
公开(公告)号：US07685360B1
公开(公告)日：2010-03-23
申请号：US11583341
申请日：2006-10-19
申请人： Don Brunnett , Bruce A. Liikanen , John Mead , Eric D. Mudama , John W. VanLaanen , Andrew W. Vogan
发明人： Don Brunnett , Bruce A. Liikanen , John Mead , Eric D. Mudama , John W. VanLaanen , Andrew W. Vogan
IPC分类号： G06F12/00
CPC分类号： G06F3/064 , G06F3/0608 , G06F3/0676 , G06F12/0866
摘要： Methods and structures for appending metadata with recorded data in a dynamic mapped storage device. In a dynamically mapped storage device in which all user supplied logical blocks are dynamically mapped by the storage device controller to physical disk blocks, features and aspects hereof allow presently unused physical space to be used for storing additional metadata associated with recorded data. As the current capacity ratio of the storage device increases, appending of metadata may cease and previously recorded data including metadata may be re-recorded (migrated) to eliminate the appended metadata. The appended metadata may be used for enhanced diagnosis and analysis of characteristics of the operating storage device and may be used to restore the content of the storage device to an earlier state. The metadata may include, for example, track following position of the read/write head, temperature, head flying height, and time of day.
摘要翻译：在动态映射存储设备中添加带有记录数据的元数据的方法和结构。在其中所有用户提供的逻辑块由存储设备控制器动态映射到物理磁盘块的动态映射存储设备中，其特征和方面允许当前未使用的物理空间用于存储与记录数据相关联的附加元数据。随着存储设备的当前容量比增加，元数据的附加可能停止，并且可以重新记录（迁移）包括元数据的先前记录的数据以消除附加的元数据。附加的元数据可以用于增强对操作存储设备的特性的诊断和分析，并且可以用于将存储设备的内容恢复到更早的状态。元数据可以包括例如读/写头的跟踪位置，温度，头部飞行高度和一天中的时间。

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