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1. 发明授权

US07984359B2 Correction of data errors in a memory buffer 有权
标题翻译：更正内存缓冲区中的数据错误
公开(公告)号：US07984359B2
公开(公告)日：2011-07-19
申请号：US11787357
申请日：2007-04-16
申请人： Julian Gorfajn , Bruce Buch , E. William Bruce, II
发明人： Julian Gorfajn , Bruce Buch , E. William Bruce, II
IPC分类号： H03M13/00
CPC分类号： H03M13/09 , G06F11/1008 , H03M13/00
摘要： Methods, circuits, and disk drive that correct errors in data that is temporarily stored in a memory buffer are disclosed. An error detection code and an error correction code are generated for data. The data, the error detection code, and the error correction code are stored in the memory buffer. The data is retrieved from the memory buffer and error detected using the error detection code. In response to detecting an error, the error correction code is applied to the retrieved data to generate corrected data.
摘要翻译：公开了修正临时存储在存储器缓冲器中的数据错误的方法，电路和磁盘驱动器。为数据生成错误检测码和纠错码。数据，错误检测码和纠错码存储在存储器缓冲器中。从存储缓冲区检索数据，并使用错误检测码检测到错误。响应于检测到错误，将纠错码应用于所检索的数据以产生校正数据。

2. 发明授权

US07508611B2 Disk drive clock circuit that adjusts clock edge timing in response to servo information and methods thereof 有权
标题翻译：磁盘驱动时钟电路，其响应于伺服信息及其方法调整时钟边沿定时
公开(公告)号：US07508611B2
公开(公告)日：2009-03-24
申请号：US11542809
申请日：2006-10-04
申请人： Bruce Buch , Pei-hui Zheng
发明人： Bruce Buch , Pei-hui Zheng
IPC分类号： G11B5/09
CPC分类号： G11B20/1403
摘要： A disk drive clock circuit includes a servo clock generator and a disk locked frequency converter. The servo clock generator generates a servo clock signal in response to servo information read from a data storage disk in a disk drive. The disk locked frequency converter responds to the servo clock signal by generating a modified clock signal having a different frequency, and adjusts timing of an edge of the modified clock signal in response to a timing event identified from the servo information read from the disk. The disk locked frequency converter can include a divide-by-n counter that is configured to divide the frequency of the servo clock signal by a number n to generate the modified clock signal. The disk locked frequency converter can reset the divide-by-n counter to a defined value in response to the timing event. The modified clock signal can thereby be phase locked to the servo information on the disk.
摘要翻译：磁盘驱动器时钟电路包括伺服时钟发生器和磁盘锁定变频器。伺服时钟发生器响应从磁盘驱动器中的数据存储盘读取的伺服信息产生伺服时钟信号。磁盘锁定频率转换器通过产生具有不同频率的修改的时钟信号来响应伺服时钟信号，并且响应于从从盘读取的伺服信息识别的定时事件来调整修改的时钟信号的边沿的定时。磁盘锁定频率转换器可以包括被配置为将伺服时钟信号的频率除以数字n的分频计数器，以产生修改的时钟信号。磁盘锁定频率转换器可以根据定时事件将除数计数器复位到定义的值。因此，修改的时钟信号可以被锁定到盘上的伺服信息。

3. 发明授权

US07278085B1 Simple error-correction codes for data buffers 有权
标题翻译：数据缓冲区的简单纠错码
公开(公告)号：US07278085B1
公开(公告)日：2007-10-02
申请号：US10608320
申请日：2003-06-27
申请人： Lih-Jyh Weng , Bruce Buch
发明人： Lih-Jyh Weng , Bruce Buch
IPC分类号： G11C29/00
CPC分类号： G11C7/1006 , G06F11/1008 , G11C2029/0411 , G11C2207/104
摘要： A method of and apparatus for handling errors occurring in data stored in memory is presented. Data to be stored in a buffer memory is applied to a generator matrix to generate parity check bits. The parity check bits are stored in the buffer memory along with the data. The stored data and parity check bits are read and the read data is used to regenerate the parity check bits. A result produced from the stored and regenerated parity check bits is usable to directly identify a location of an erroneous bit of the data in the buffer memory.
摘要翻译：提出了一种用于处理存储在存储器中的数据中出现的错误的方法和装置。要存储在缓冲存储器中的数据被应用于发生器矩阵以产生奇偶校验位。奇偶校验位与数据一起存储在缓冲存储器中。读取存储的数据和奇偶校验位，并且使用读取的数据来重新生成奇偶校验位。由存储和再生的奇偶校验位产生的结果可用于直接识别缓冲存储器中数据的错误位的位置。

4. 发明授权

US06288860B1 Servo area numbering strategy for computer disk drives 有权
标题翻译：计算机磁盘驱动器的伺服区编号策略
公开(公告)号：US06288860B1
公开(公告)日：2001-09-11
申请号：US09225256
申请日：1999-01-04
申请人： Bruce Buch
发明人： Bruce Buch
IPC分类号： G11B509
CPC分类号： G11B5/59655 , G11B5/5534 , G11B21/106
摘要： A disk for a disk drive system includes a disk having a track format region including a spoke field region. The spoke field region has a single binary bit to identify angular position of a track with respect to disk head of the disk drive system.
摘要翻译：用于磁盘驱动器系统的磁盘包括具有包括辐条区域的磁道格式区域的磁盘。辐条区域具有单个二进制位，以识别轨道相对于磁盘驱动器系统的盘头的角位置。

5. 发明授权

US5606466A Method for overlapping block read events in disk drive 失效
标题翻译：在磁盘驱动器中重叠块读取事件的方法
公开(公告)号：US5606466A
公开(公告)日：1997-02-25
申请号：US546628
申请日：1995-10-23
申请人： Kevin D. Fisher , Bruce Buch , Thomas Lau , Pablo A. Ziperovich
发明人： Kevin D. Fisher , Bruce Buch , Thomas Lau , Pablo A. Ziperovich
IPC分类号： G11B5/027 , G11B20/10 , G11B20/12 , G11B20/14 , G11B5/09 , H04N5/76
CPC分类号： G11B20/10009 , G11B20/1258 , G11B20/1426
摘要： A new method for overlapping block read events in a disk drive having synchronously sampled data detection channels is presented. In particular, the new method is for overlapping read back processing by real-time and digital signal processing of first and second data blocks from a storage medium. The method includes steps of clocking real-time and digital signal processes by a clock synchronized to the first data block while the first data block is passing by a data transducer head, clocking the digital signal processes for the first data block by an asynchronous clock operating at a nominal data clocking rate after the first data block has passed by the data transducer head and before a clock has synchronized to the second data block following the first data block, and clocking real-time signal processes for the second data block and completing clocking of the digital processes for the first data block by a clock synchronized to the second data block passing by the data transducer head. The storage medium can be a magnetic hard disk, magnetic tape, or an optical disk, for example.
摘要翻译：提出了一种用于在具有同步采样数据检测通道的磁盘驱动器中重叠块读取事件的新方法。特别地，新方法是通过来自存储介质的第一和第二数据块的实时和数字信号处理来重叠读回处理。该方法包括以下步骤：通过与第一数据块同步的时钟对实时和数字信号处理进行计时，同时第一数据块通过数据传感器头，通过异步时钟操作为第一数据块的数字信号处理计时在第一数据块经过数据变换器头之后并且在时钟已经与第一数据块之后的第二数据块同步之后的标称数据时钟速率，以及对第二数据块的实时信号处理进行计时并完成时钟通过与数据传感器头通过的第二数据块同步的时钟来产生第一数据块的数字处理。存储介质可以是例如磁性硬盘，磁带或光盘。

6. 发明授权

US08745318B2 Parameter tracking for memory devices 有权
标题翻译：存储器件的参数跟踪
公开(公告)号：US08745318B2
公开(公告)日：2014-06-03
申请号：US13170794
申请日：2011-06-28
申请人： Bernardo Rub , Ara Patapoutian , Bruce Buch
发明人： Bernardo Rub , Ara Patapoutian , Bruce Buch
IPC分类号： G06F12/00
CPC分类号： G06F12/0246 , G06F2212/7205 , G06F2212/7211
摘要： Methods and systems involve collecting memory device parameters and using memory device parameters to determine memory wear information. A set of first parameters associated with wear of the memory device is monitored for at least one memory unit of the memory device. The first parameters are compared to respective trigger criterion. If the comparison reveals that one or more of the first parameters are beyond their trigger criterion, then collection of a second set of parameters is triggered. The second parameters are also indicative of the wear of the memory device. The set of first parameters may overlap the set of second parameters. The set of second parameters are used to develop memory wear information. In some implementations, the memory wear information may be configuration information used to configure the read/write channel to compensate for wear of the memory device. In some implementations, the memory wear information may be used to predict or estimate the lifetime of the device.
摘要翻译：方法和系统涉及收集存储器件参数并使用存储器件参数来确定存储器损耗信息。针对存储器件的至少一个存储器单元监视与存储器件的磨损相关联的一组第一参数。将第一个参数与相应的触发条件进行比较。如果比较显示一个或多个第一参数超出其触发标准，则触发第二组参数的收集。第二参数也表示存储器件的磨损。第一个参数的集合可能与第二个参数的集合重叠。第二个参数的集合用于开发内存磨损信息。在一些实现中，存储器损耗信息可以是用于配置读/写通道以补偿存储器件的磨损的配置信息。在一些实现中，可以使用存储器磨损信息来预测或估计设备的寿命。

7. 发明申请

US20120075930A1 REUSE OF INFORMATION FROM MEMORY READ OPERATIONS 有权
标题翻译：从内存读取操作中重新使用信息
公开(公告)号：US20120075930A1
公开(公告)日：2012-03-29
申请号：US12891475
申请日：2010-09-27
申请人： Ara Patapoutian , Bernardo Rub , Bruce Buch
发明人： Ara Patapoutian , Bernardo Rub , Bruce Buch
IPC分类号： G11C16/04 , G11C16/06
CPC分类号： G11C11/5628 , G11C16/0483 , G11C16/06 , G11C16/3418
摘要： A nominal reference read operation compares analog voltages of the memory cells to at least one nominal reference voltage. A shifted reference read operation compares the analog voltages of the memory cells to at least one shifted reference voltage that is shifted from the nominal reference voltage to compensate for an expected change in the analog voltages of the memory cells. Data stored in the memory cells is decoded by a first decoding process that uses the information from either the nominal reference read operation or the shifted reference read operation. The data stored in the memory cells is decoded by a second decoding process that uses the information from both the nominal reference read operation and the shifted reference read operation.
摘要翻译：标称参考读取操作将存储器单元的模拟电压与至少一个标称参考电压进行比较。移位的参考读取操作将存储器单元的模拟电压与从标称参考电压偏移的至少一个移位的参考电压进行比较，以补偿存储器单元的模拟电压的预期变化。通过使用来自标称参考读取操作或移位参考读取操作的信息的第一解码处理对存储单元中存储的数据进行解码。通过使用来自标称参考读取操作和偏移的参考读取操作的信息的第二解码处理来对存储单元中存储的数据进行解码。

8. 发明授权

US07423832B2 Controlling head heating based on upcoming data sector write pattern 有权
标题翻译：基于即将到来的数据扇区写入模式控制磁头加热
公开(公告)号：US07423832B2
公开(公告)日：2008-09-09
申请号：US11703317
申请日：2007-02-07
申请人： Bruce Buch , James Fitzpatrick
发明人： Bruce Buch , James Fitzpatrick
IPC分类号： G11B21/02 , G11B27/36
CPC分类号： G11B5/02 , G11B5/6064 , G11B2005/0005
摘要： A disk drive includes a rotatable data storage disk, a head, a heater element, and a controller. The disk includes a plurality of data sectors between servo spokes. The head is configured to fly on an air cushion relative to the rotating disk while writing data on the data sectors. The heater element is attached to the head and configured to controllably heat the head responsive to a heater signal. The controller determines an upcoming pattern of selected ones of the data sectors on which data is to be written through the head in response to at least one write command from a host device, and controls the heater signal in response to the determined upcoming pattern of data sectors on which data is to be written.
摘要翻译：磁盘驱动器包括可旋转数据存储盘，头，加热器元件和控制器。盘包括伺服轮辐之间的多个数据扇区。头部配置成相对于旋转盘在气垫上飞行，同时在数据扇区上写入数据。加热器元件附接到头部并且被配置为响应于加热器信号可控地加热头部。控制器响应于来自主机设备的至少一个写入命令，确定要通过头部写入数据的所选数据扇区的即将到来的模式，并根据所确定的即将到来的数据模式来控制加热器信号要写入数据的扇区。

9. 发明授权

US07266750B1 Error recovery strategies for iterative decoders 有权
标题翻译：迭代解码器的错误恢复策略
公开(公告)号：US07266750B1
公开(公告)日：2007-09-04
申请号：US10454326
申请日：2003-06-04
申请人： Ara Patapoutian , Bruce Buch , Rose Shao
发明人： Ara Patapoutian , Bruce Buch , Rose Shao
IPC分类号： H03M13/00 , H03M13/03
CPC分类号： H03M13/1111 , H03M13/1105 , H03M13/3738 , H03M13/3746 , H03M13/3784 , H03M13/616 , H03M13/6325 , H04L1/0057
摘要： An iterative decoder is controlled to iteratively decode a block by performing one or more decoding iterations for the block during a predetermined block time. The iterative decoder is further controlled to perform more decoding iterations for the block during a time in which the hardware of the iterative decoder is available, if the block fails to converge to correct data during the predetermined block time. The iterative decoder uses a parity-check matrix and can be configured to process that parity-check matrix for parallel, sequential or a combination of parallel and sequential (“hybrid”) parity constraint updates.
摘要翻译：控制迭代解码器以在预定的块时间期间对块执行一个或多个解码迭代来迭代地解码块。迭代解码器被进一步控制，以便在迭代解码器的硬件可用的时间期间对块进行更多的解码迭代，如果块在预定块时间期间未能收敛以校正数据。迭代解码器使用奇偶校验矩阵，并且可以被配置为处理用于并行，顺序或并行和顺序（“混合”）奇偶校验约束更新的组合的奇偶校验矩阵。

10. 发明授权

US07199956B1 Disk drive self-servo writing using fundamental and higher harmonics of a printed reference pattern 有权
标题翻译：使用印刷参考图案的基波和高次谐波进行磁盘驱动自伺服写入
公开(公告)号：US07199956B1
公开(公告)日：2007-04-03
申请号：US10251270
申请日：2002-09-20
申请人： Michael Anthony Moser , Ara Patapoutian , John McEwen, legal representative , Bin Liu , Bruce Buch
发明人： Peter McEwen, deceased
IPC分类号： G11B5/00 , G11B5/09 , G11B20/10 , G11B5/02 , G11B21/02 , G11B5/596
CPC分类号： G11B5/59688 , G11B5/59627 , G11B5/59666 , G11B27/19
摘要： Disk drive self-servo writing includes transferring a reference pattern by magnetic printing onto a reference disk, wherein the resulting printed reference pattern includes embedded servo information that provides servo timing and head position information, installing the reference disk and a head into the disk drive, reading the printed reference pattern using the head to generate a readback signal, sampling the readback signal at a sampling rate to generate a sampled signal, processing the sampled signal waveform spectrum to generate a recovered signal including the embedded servo information and fundamental and higher harmonics of the sampled signal, using the embedded servo information from the recovered signal to precisely position and maintain the head at concentric tracks of the reference disk, and self-writing servo patterns onto the tracks with the head.
摘要翻译：磁盘驱动自伺服写入包括通过磁性印刷将参考图案转移到参考盘上，其中所得到的打印参考图案包括提供伺服定时和头位置信息的嵌入式伺服信息，将参考盘和磁头安装到磁盘驱动器中，使用头读取打印的参考图案以产生回读信号，以采样率对回读信号进行采样以产生采样信号，处理采样信号波形频谱以产生包括嵌入伺服信息的恢复信号和基本和高次谐波采样信号使用来自恢复信号的嵌入式伺服信息，将头部精确地定位并保持在参考盘的同心轨道上，并将头部自动写入伺服模式。

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