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    Phase frequency detector circuit having reduced dead band
    1.
    发明授权
    Phase frequency detector circuit having reduced dead band 失效

    公开(公告)号：US06590427B2

    公开(公告)日：2003-07-08

    申请号：US09946324

    申请日：2001-09-04

    申请人： Robert Dale Murphy ,  Peter Murray

    发明人： Robert Dale Murphy ,  Peter Murray

    IPC分类号： G01R2500

    CPC分类号： H03D13/004 ,  H03L7/0891

    摘要： A digital phase detector that conducts pump up and pump down control signals to a charge pump, wherein each of the control signals has pulses that have a substantially 50/50 duty cycle characteristic when the two input signals, i.e., the input data signal and the feedback clock signal, are substantially in phase. This substantially 50/50 duty cycle output reduces, if not eliminates, inherent problems related to the turn-on delays of the charge pump while maintaining a locked condition. The phase detector may further include an intelligence to detect and handle other situations, such as missing data pulses.

    Dynamic compensation of servo burst measurement offsets in a disc drive
    2.
    发明授权
    Dynamic compensation of servo burst measurement offsets in a disc drive 失效
    磁盘驱动器中伺服突发测量偏移的动态补偿

    公开(公告)号：US5835300A

    公开(公告)日：1998-11-10

    申请号：US791349

    申请日：1997-01-30

    申请人： Robert Dale Murphy ,  Lealon Ray McKenzie ,  Randall David Hampshire

    发明人： Robert Dale Murphy ,  Lealon Ray McKenzie ,  Randall David Hampshire

    IPC分类号： G11B5/55 ,  G11B5/596 ,  G11B21/08 ,  G11B21/10

    CPC分类号： G11B21/106 ,  G11B21/083 ,  G11B5/5526 ,  G11B5/59627 ,  G11B5/59688

    摘要： Method and apparatus for compensating for errors in the location of servo frames in a disc drive, the servo frames providing control inputs to a servo loop of the disc drive. Each servo frame includes an additional compensation field to which a compensation term is written, the compensation term indicative of the average radial error in the location of the servo frame. The compensation term is determined by measuring the radial distance between adjacent servo frames over a plurality of revolutions of the disc and averaging these measured radial distances. The compensation terms are thereafter used in conjunction with position information from the servo frames to control the position of the head. The compensation term facilitates the elimination of repeatable, random errors in the locations of the servo frames, causing the head to nominally follow a circular path about the disc, regardless of the errors in the locations of the servo frames.

    摘要翻译： 用于补偿磁盘驱动器中的伺服帧的位置中的错误的方法和装置，所述伺服帧向盘驱动器的伺服环提供控制输入。 每个伺服帧包括写入补偿项的附加补偿场，表示伺服帧位置的平均径向误差的补偿项。 补偿项是通过在盘的多圈中测量相邻伺服帧之间的径向距离来确定的，并平均这些测量的径向距离。 补偿项随后与来自伺服帧的位置信息一起使用，以控制头部的位置。 补偿项有助于在伺服帧的位置消除可重复的随机误差，导致磁头名义上遵循围绕磁盘的圆形路径，而不管伺服帧的位置中的错误。

    Fast boot in hybrid drives
    3.
    发明授权
    Fast boot in hybrid drives 有权
    在混合驱动器中快速引导

    公开(公告)号：US09207947B1

    公开(公告)日：2015-12-08

    申请号：US13600035

    申请日：2012-08-30

    申请人： Robert Dale Murphy ,  Robert William Dixon ,  John Frederic Wehman

    发明人： Robert Dale Murphy ,  Robert William Dixon ,  John Frederic Wehman

    IPC分类号： G06F9/44 ,  G06F11/14 ,  G06F21/57

    CPC分类号： G06F9/4401 ,  G06F9/4418 ,  G06F11/1417 ,  G06F21/575

    摘要： The disclosure is related systems and method for improved boot and resume from hibernate times in hybrid drives. In one embodiment, a device may comprise an interface circuit to communicate with a host device, a first nonvolatile data storage medium, and a controller configured to monitor the interface circuit for a trigger event and pin data associated with read requests to the first nonvolatile data storage medium during a first specific duration in response to the trigger event. Another embodiment may be a method comprising receiving a trigger event, monitoring a duration since the trigger event, retrieving data from a nonvolatile cache memory, retrieving data from a disc memory when the data is not in the nonvolatile cache memory, and pinning the data retrieved from the disc memory to the nonvolatile cache memory.

    摘要翻译： 该公开是用于在混合驱动器中从休眠时间改进引导和恢复的相关系统和方法。 在一个实施例中，设备可以包括用于与主机设备通信的接口电路，第一非易失性数据存储介质和被配置为监视接口电路以获得触发事件的接口电路和与第一非易失性数据的读取请求相关联的引脚数据 在响应于触发事件的第一特定持续时间内的存储介质。 另一个实施例可以是一种方法，包括接收触发事件，监视触发事件之后的持续时间，从非易失性高速缓冲存储器检索数据，当数据不在非易失性高速缓冲存储器中时从盘存储器检索数据，以及固定数据检索 从磁盘存储器到非易失性高速缓冲存储器。

    Variable format timing runout compensation
    5.
    发明授权
    Variable format timing runout compensation 失效
    可变格式定时跳动补偿

    公开(公告)号：US06611391B1

    公开(公告)日：2003-08-26

    申请号：US09724109

    申请日：2000-11-28

    申请人： Robert Dale Murphy ,  Daniel Scott Fisher

    发明人： Robert Dale Murphy ,  Daniel Scott Fisher

    IPC分类号： G11B509

    CPC分类号： G11B5/59627

    摘要： A method and system of identifying and compensating for the cumulative effect of once per revolution, OPR, timing errors by modulating the size of an inter-sector runout (ISR) field between servo sectors. The ISR field is part of an inter-sector gap (ISG) field. The method begins when the nominal data field frequency is increased by one-half of the spin speed tolerance to guarantee adequate data field tolerances at the fastest portion of the timing OPR error curve. The ISR field is added to the disc format and maintained as a rotationally varying field. The ISR field is varied rotationally from a minimum of zero to a maximum equal to the timing OPR error tolerance. The size of the ISR field is varied rotationally based upon a calibration table that is used to identify the location of the disc drive head and to compensate for the appropriate timing OPR error at that location. The remainder of the ISG field is used to compensate for fixed timing errors.

    摘要翻译： 通过调制伺服扇区之间的扇区间跳动（ISR）场的大小来识别和补偿每转一次的累积效应，OPR，定时误差的方法和系统。 ISR域是扇区间隙（ISG）字段的一部分。 当标称数据场频率增加旋转速度容差的一半时，该方法开始，以保​​证定时OPR误差曲线最快部分的足够的数据场容限。 ISR字段被添加到光盘格式并保持为旋转变化的字段。 ISR场从最小零点到最大等于定时OPR误差容限的旋转变化。 ISR场的大小基于用于识别盘驱动器头的位置并补偿该位置处的适当的定时OPR误差的校准表旋转地变化。 ISG字段的其余部分用于补偿固定的定时误差。

    SYSTEM AND METHOD FOR IMPLEMENTING DATA STORAGE MODES IN A DATA STORAGE SYSTEM
    7.
    发明申请
    SYSTEM AND METHOD FOR IMPLEMENTING DATA STORAGE MODES IN A DATA STORAGE SYSTEM 审中-公开
    在数据存储系统中实现数据存储模式的系统和方法

    公开(公告)号：US20100262392A1

    公开(公告)日：2010-10-14

    申请号：US12422721

    申请日：2009-04-13

    申请人： Robert Dale Murphy ,  Vincent Michael McGarry ,  Matthew John Schwall

    发明人： Robert Dale Murphy ,  Vincent Michael McGarry ,  Matthew John Schwall

    IPC分类号： G01R31/36

    CPC分类号： G11B19/044 ,  G01R31/392 ,  G06F3/0625 ,  G06F3/0656 ,  G06F3/068 ,  G06F12/0804 ,  G06F12/0866 ,  G06F2212/225 ,  G11B19/02 ,  G11B27/034 ,  G11B27/36 ,  Y02D10/13 ,  Y02D10/154

    摘要： The present disclosure provides a data storage system configured to implement data storage modes based on a battery health indicator. In one embodiment, a data storage system is provided and comprises an input interface configured to receive data and the battery health indicator. In one example, the data and battery health indicator is received from a host system through the input interface. The data storage system also includes at least one data storage device and a controller configured to store data in the at least one data storage device. The controller is configured to implement a data storage mode based on the battery health indicator.

    摘要翻译： 本公开提供了一种被配置为基于电池健康指示器实现数据存储模式的数据存储系统。 在一个实施例中，提供了数据存储系统，并且包括被配置为接收数据和电池健康指示器的输入接口。 在一个示例中，数据和电池健康指示器通过输入接口从主机系统接收。 数据存储系统还包括至少一个数据存储设备和被配置为在至少一个数据存储设备中存储数据的控制器。 控制器被配置为基于电池健康指示器实现数据存储模式。

    Servo writing in a disc drive with substantially identical heads having read and write elements in a radial offset position
    8.
    发明授权
    Servo writing in a disc drive with substantially identical heads having read and write elements in a radial offset position 失效
    在具有基本上相同的头的盘驱动器中的伺服写入，其具有在径向偏移位置的读取和写入元件

    公开(公告)号：US06724558B2

    公开(公告)日：2004-04-20

    申请号：US09772578

    申请日：2001-01-30

    申请人： Lawrence Matthias Bryant ,  Karl Arnold Belser ,  Robert Dale Murphy

    发明人： Lawrence Matthias Bryant ,  Karl Arnold Belser ,  Robert Dale Murphy

    IPC分类号： G11B5596

    CPC分类号： G11B21/025 ,  G11B5/59644

    摘要： A method and apparatus for reading and writing data from and to a data storage disc in a data storage device. The data storage disc includes a first disc surface and second disc surface for storing data. The data storage device includes an actuator assembly configured to selectively position a first transducer over the first disc surface and a second transducer over the second disc surface, wherein the first transducer is substantially identical to the second transducer. Furthermore, each transducer includes a read element and a write element, wherein the read element is offset from the write element by at least the width of one servo track.

    摘要翻译： 一种用于在数据存储设备中从数据存储盘读取数据和向数据存储盘写入数据的方法和装置。 数据存储盘包括用于存储数据的第一盘表面和第二盘表面。 数据存储装置包括被配置成选择性地将第一换能器定位在第一盘表面上方的致动器组件和在第二盘表面上的第二换能器，其中第一换能器基本上与第二换能器相同。 此外，每个换能器包括读取元件和写入元件，其中读取元件至少与一个伺服轨迹的宽度偏离写入元件。

    Dual modulo gray code positioning system
    9.
    发明授权
    Dual modulo gray code positioning system 失效
    双模灰码定位系统

    公开(公告)号：US06304398B1

    公开(公告)日：2001-10-16

    申请号：US09374450

    申请日：1999-08-14

    申请人： Stephen Matthew Gaub ,  Glen Worstell ,  Daniel Zaharris ,  Robert Dale Murphy ,  Michael Edward Baum ,  Rodney Brittner

    发明人： Stephen Matthew Gaub ,  Glen Worstell ,  Daniel Zaharris ,  Robert Dale Murphy ,  Michael Edward Baum ,  Rodney Brittner

    IPC分类号： G11B509

    CPC分类号： G11B5/59611 ,  G11B5/59655

    摘要： An apparatus and method of reducing the size of a servo burst and thus increasing the disc surface available for data storage is accomplished by uniquely encoding track information in the gray code of a servo burst on a disc. Each track has a unique sequential track identification number assigned to it. A plurality of sets of servo sectors on each track are encoded with a modulo operation of the track identification number for the track each using a unique modulus. Preferably the sectors are grouped into two sets, i.e., even numbered sectors on each track are modulo encoded with a first modulo operation of the track identification number for the track using a first modulus and odd numbered servo sectors on each track are modulo encoded with a second modulo operation of the track identification number for the track using a second modulus. Decoding the absolute track address is accomplished by decoding the modulo numbers and comparing the even sector modulo numbers to the odd numbered sector modulo numbers.

    摘要翻译： 通过在盘上的伺服脉冲串的灰度码中唯一地编码轨道信息来实现减小伺服脉冲串的大小并从而增加可用于数据存储的盘表面的装置和方法。 每个轨道具有分配给它的唯一的顺序轨道标识号。 每个轨道上的多组伺服扇区用轨道识别号码的模运算进行编码，每一轨道识别号码使用唯一模数。 优选地，扇区被分组成两组，即，使用第一模数对轨道的轨道识别号进行第一模运算，对每个轨道上的偶数扇区进行模数编码，并且每个轨道上的奇数编号的伺服扇区都用 使用第二模数对轨道的轨迹识别号进行第二模运算。 对绝对磁道地址进行解码是通过解码模数并将偶数扇区模数与奇数扇区模数进行比较来实现的。