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1. 发明授权

US06307697B1 Method and apparatus for correcting for systematic errors in timing pattern generation 有权
标题翻译：用于校正定时模式生成中的系统误差的方法和装置
公开(公告)号：US06307697B1
公开(公告)日：2001-10-23
申请号：US09550643
申请日：2000-04-14
申请人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
发明人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
IPC分类号： G11B509
CPC分类号： G11B21/106 , G11B5/5565 , G11B5/59633 , G11B19/04
摘要： Improvements in placement of timing patterns in self-servowriting include correcting for systematic errors due to geometric effects. A correction is made for varying systematic errors, such as when the recording head has spatially separate read and write elements. Further, servopattern rotation due to residual or unmeasured systematic errors is reduced by using a once per revolution clock index derived from the motor drive current waveform or any other sensor. In one aspect of correcting for systematic errors in the writing of timing patterns on a storage medium of a storage device, a time interval between a trigger pattern written at a first-radial position of the storage medium and a rotational index is measured. The rotational index is related to the rotational orientation of the storage medium with respect to a fixed frame of the storage device. The location of another trigger pattern to be written is shifted, using the measured time interval to determine the shift in location for the another trigger pattern.
摘要翻译：自我维护中定时模式布局的改进包括纠正由于几何效应引起的系统误差。对变化的系统误差进行校正，例如当记录头具有空间上分离的读和写元件时。此外，通过使用从电动机驱动电流波形或任何其他传感器导出的每转一次的时钟指数来减少由于残余或未测量的系统误差引起的伺服模式旋转。在对存储装置的存储介质上的定时模式的写入进行校正系统误差的一个方面，测量记录在存储介质的第一径向位置的触发模式与旋转指数之间的时间间隔。旋转指数与存储介质相对于存储装置的固定框架的旋转取向有关。使用测量的时间间隔来移动要写入的另一个触发模式的位置，以确定另一个触发模式的位置偏移。

2. 发明授权

US06898035B1 Method and apparatus for correcting for systematic errors in timing pattern generation 失效
公开(公告)号：US06898035B1
公开(公告)日：2005-05-24
申请号：US09723362
申请日：2000-11-27
申请人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
发明人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
IPC分类号： G11B5/55 , G11B5/596 , G11B21/10 , G11B5/09 , G11B21/02
CPC分类号： G11B5/59633 , G11B5/5565 , G11B21/106
摘要： Improvements in placement of timing patterns in self-servowriting include correcting for systematic errors due to geometric effects. A correction is made for varying systematic errors, such as when the recording head has spatially separate read and write elements. Further, servopattern rotation due to residual or unmeasured systematic errors is reduced by using a once per revolution clock index derived from the motor drive current waveform or any other sensor. In one aspect of correcting for systematic errors in the writing of timing patterns on a storage medium of a storage device, a time interval between a trigger pattern written at a first radial position of the storage medium and a rotational index is measured. The rotational index is related to the rotational orientation of the storage medium with respect to a fixed frame of the storage device. The location of another trigger pattern to be written is shifted, using the measured time interval to determine the shift in location for the another trigger pattern.

3. 发明授权

US6075668A Method and apparatus for correcting for random errors in timing pattern generation 失效
标题翻译：用于校正定时模式生成中的随机误差的方法和装置
公开(公告)号：US6075668A
公开(公告)日：2000-06-13
申请号：US316882
申请日：1999-05-21
申请人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
发明人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
IPC分类号： G11B5/55 , G11B5/596 , G11B19/04 , G11B21/10 , G11B5/09 , G11B21/02
CPC分类号： G11B5/5565 , G11B19/04 , G11B21/106 , G11B5/59633
摘要： Improvements in placement of timing patterns in self-servowriting include correcting for random errors. Random errors may be caused by variations in disk velocity and therefore, one technique for correcting for random errors includes reducing velocity jitter. Additionally, random errors can be corrected by improving interval control during the propagation of trigger patterns used in writing timing information on storage media. Further, random errors, in the writing of timing information, can be corrected during a single revolution of the storage media. This eliminates additional rotations, thereby providing a large capital cost savings.
摘要翻译：自我维护中定时模式布局的改进包括纠正随机错误。随机误差可能由磁盘速度的变化引起，因此用于校正随机误差的一种技术包括降低速度抖动。此外，可以通过在用于在定时信息写入存储介质上的触发模式的传播期间改进间隔控制来校正随机误差。此外，在定时信息的写入中的随机误差可以在存储介质的单次旋转期间被校正。这消除了额外的旋转，从而提供了大量的资本成本节省。

4. 发明授权

US6052249A Method and apparatus for data storage using thermal proximity imaging 失效
标题翻译：使用热邻近成像的数据存储方法和装置
公开(公告)号：US6052249A
公开(公告)日：2000-04-18
申请号：US129547
申请日：1998-08-05
申请人： David William Abraham , Anthony Paul Praino , Mark Edward Re , Hemantha Kumar Wickramasinghe
发明人： David William Abraham , Anthony Paul Praino , Mark Edward Re , Hemantha Kumar Wickramasinghe
IPC分类号： G01N25/72 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/596 , G11B5/60 , G11B5/82 , G11B11/00 , G11B11/06 , G11B13/00 , G11B17/32 , G11B19/04 , G11B20/10 , G11B20/24 , G11B33/10 , G11B5/09
CPC分类号： G11B20/10009 , G01N25/72 , G11B11/00 , G11B13/00 , G11B17/32 , G11B20/24 , G11B33/10 , G11B5/00 , G11B5/012 , G11B5/59683 , G11B5/607 , G11B11/06 , G11B19/04 , G11B2005/0021 , G11B5/02 , G11B5/59633 , G11B5/6005 , G11B5/82
摘要： A method and apparatus for accessing a data storage medium having raised and lowered portions indicative of data stored on the medium. Energy is supplied to a sensor which is moved relative to, and in close proximity to, a surface of the medium on which the data in the form of raised and lowered portions is stored. The sensor and the storage medium are moved in relation thereto, such that the sensor remains at a substantially constant fly spacing therefrom. A decrease in temperature of the sensor is detected when it is in proximity to a variation, i.e., a raised portion on the medium. This detected decrease in temperature associated with a raised variation, e.g., asperity, can be used as the basis upon which to detect the data on the data storage medium. The data storage medium may also contain magnetically stored data, such that the surface variations and the magnetic characteristics of the data storage medium can both be utilized to store data thereon.
摘要翻译：一种用于访问具有指示存储在介质上的数据的升高和降低部分的数据存储介质的方法和装置。能量被供应到传感器，该传感器相对于其上存储有升高和降低部分形式的数据的介质的表面并且非常接近地移动。传感器和存储介质相对于其移动，使得传感器保持与其基本恒定的飞行距离。当传感器接近变化即介质上的升高部分时，检测传感器温度的降低。检测到与升高的变化（例如粗糙度）相关联的温度的下降可以用作检测数据存储介质上的数据的基础。数据存储介质还可以包含磁存储的数据，使得数据存储介质的表面变化和磁特性都可以用于在其上存储数据。

5. 发明授权

US5901003A Method and apparatus for determining systematic errors 失效
标题翻译：用于确定系统误差的方法和装置
公开(公告)号：US5901003A
公开(公告)日：1999-05-04
申请号：US628910
申请日：1996-04-08
申请人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell C. Webb , Edward John Yarmchuk
发明人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell C. Webb , Edward John Yarmchuk
IPC分类号： G11B5/55 , G11B5/596 , G11B19/04 , G11B21/10 , G11B5/09
CPC分类号： G11B19/04 , G11B21/106 , G11B5/5565 , G11B5/59633
摘要： Improvements in placement of timing patterns in self servo writing include correcting for random and systematic errors due to geometric effects. In a disk drive having a recording head with separate read and write elements, a method for determining separation between the elements and for correcting for such errors as a function of skew angle between the head and the disk. Errors resulting from misalignment and non-parallelism of the elements as well as misalignment of the head on it its actuator are also detected and corrected. Errors due to changes in rotational velocity of the disk and misplacement of timing patterns with respect to adjacent timing patterns are detected and corrected. In general, a single revolution process may be used to both write and detect random errors on each track and corrected on subsequent tracks.
摘要翻译：自动写入中定时模式布置的改进包括纠正由于几何效应引起的随机和系统误差。在具有具有分离的读取和写入元件的记录头的磁盘驱动器中，确定元件之间的间隔并用于校正这种错误的方法，其作为头部和盘之间的歪斜角的函数。元件的不对准和不平行度导致的误差以及头部在其致动器上的未对准性也被检测和校正。检测并纠正由于盘的旋转速度的变化引起的错误和定时图案相对于相邻的定时图案的错位。通常，可以使用单次旋转处理来写入和检测每个轨道上的随机误差并在随后的轨道上进行校正。

6. 发明授权

US06252732B1 Method and apparatus for correcting systematic errors in timing pattern generation 失效
标题翻译：用于校正定时图案生成中的系统误差的方法和装置
公开(公告)号：US06252732B1
公开(公告)日：2001-06-26
申请号：US08882396
申请日：1997-07-10
申请人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
发明人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
IPC分类号： G11B509
CPC分类号： G11B21/106 , G11B5/5565 , G11B5/59633 , G11B19/04
摘要： Improvements in placement of timing patterns in self-servowriting include correcting for systematic errors due to geometric effects. A correction is made for varying systematic errors, such as when the recording head has spatially separate read and write elements. Further, servopattern rotation due to residual or unmeasured systematic errors is reduced by using a once per revolution clock index derived from the motor drive current waveform or any other sensor. In one aspect of correcting for systematic errors in the writing of timing patterns on a storage medium of a storage device, a time interval between a trigger pattern written at a first radial position of the storage medium and a rotational index is measured. The rotational index is related to the rotational orientation of the storage medium with respect to a fixed frame of the storage device. The location of another trigger pattern to be written is shifted, using the measured time interval to determine the shift in location for the another trigger pattern.
摘要翻译：自我维护中定时模式布局的改进包括纠正由于几何效应引起的系统误差。对变化的系统误差进行校正，例如当记录头具有空间上分离的读和写元件时。此外，通过使用从电动机驱动电流波形或任何其他传感器导出的每转一次的时钟指数来减少由于残余或未测量的系统误差引起的伺服模式旋转。在对存储装置的存储介质上的定时模式的写入进行校正系统错误的一个方面，测量在存储介质的第一径向位置上写入的触发模式与旋转指标之间的时间间隔。旋转指数与存储介质相对于存储装置的固定框架的旋转取向有关。使用测量的时间间隔来移动要写入的另一个触发模式的位置，以确定另一个触发模式的位置偏移。

7. 发明授权

US6088176A Method and apparatus for separating magnetic and thermal components from an MR read signal 失效
标题翻译：用于从MR读取信号中分离磁性和热分量的方法和装置
公开(公告)号：US6088176A
公开(公告)日：2000-07-11
申请号：US581877
申请日：1996-01-02
申请人： Gordon J. Smith , Hal Hjalmar Ottesen , David William Abraham , Anthony Paul Praino , Mark Edward Re , Hemantha Kumar Wickramasinghe
发明人： Gordon J. Smith , Hal Hjalmar Ottesen , David William Abraham , Anthony Paul Praino , Mark Edward Re , Hemantha Kumar Wickramasinghe
IPC分类号： G01N25/72 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/596 , G11B5/60 , G11B5/82 , G11B11/00 , G11B11/06 , G11B13/00 , G11B17/32 , G11B19/04 , G11B20/10 , G11B20/24 , G11B33/10 , G11B5/09
CPC分类号： G01N25/72 , G11B11/00 , G11B13/00 , G11B17/32 , G11B20/10009 , G11B20/24 , G11B33/10 , G11B5/00 , G11B5/012 , G11B5/59683 , G11B11/06 , G11B19/04 , G11B2005/0021 , G11B5/02 , G11B5/59633 , G11B5/6005 , G11B5/82
摘要： An apparatus and method for reading an information signal from a magnetic storage medium using a magnetoresistive (MR) head, and separating a thermal signal component and, if present, a magnetic signal component from the information signal. A signal separation/restoration module eliminates distortion in the magnetic signal component of a readback signal induced by a thermal signal component of the readback signal. A finite impulse response (FIR) filter may be employed in the signal separation/restoration module to eliminate the distortion in the magnetic signal. The signal separation/restoration module may be employed to extract the thermal signal component from the readback signal. In one configuration, an MR head is coupled to an arm electronics (AE) module, having a highpass filtering behavior, and a signal separation/restoration module that includes an inverse filter having a transfer function inverse to that of the effective highpass filter of the AE module. The inverse filter may be an infinite impulse response (IIR) filter. In another embodiment, the magnetic and thermal signal components of a readback signal are respectively extracted and processed so as to linearly correspond to head-to-disk spacing. Head-to-disk spacing change using the thermal signal is used to detect disk surface defects, topographic variations, and servo control surface variations.
摘要翻译：一种用于使用磁阻（MR）磁头从磁存储介质读取信息信号并从信息信号分离热信号分量以及如果存在磁信号分量的装置和方法。信号分离/恢复模块消除由回读信号的热信号分量引起的回读信号的磁信号分量中的失真。可以在信号分离/恢复模块中采用有限脉冲响应（FIR）滤波器来消除磁信号中的失真。信号分离/恢复模块可用于从回读信号中提取热信号分量。在一种配置中，MR头耦合到具有高通滤波特性的臂电子装置（AE）模块，以及信号分离/恢复模块，其包括具有与有效高通滤波器相反的传递函数的逆滤波器 AE模块。逆滤波器可以是无限脉冲响应（IIR）滤波器。在另一个实施例中，回读信号的磁信号和热信号分量分别被提取和处理，以便线对应于磁头到磁盘的间隔。使用热信号的磁头到磁盘间距的变化用于检测磁盘表面缺陷，地形变化和伺服控制表面变化。

8. 发明授权

US6078450A Method and apparatus for correcting for random errors in timing pattern generation 失效
公开(公告)号：US6078450A
公开(公告)日：2000-06-20
申请号：US891122
申请日：1997-07-10
申请人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
发明人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell Chapman Webb , Edward John Yarmchuk
IPC分类号： G11B5/55 , G11B5/596 , G11B19/04 , G11B21/10 , G11B5/09
CPC分类号： G11B5/5565 , G11B19/04 , G11B21/106 , G11B5/59633
摘要： Improvements in placement of timing patterns in self-servowriting include correcting for random errors. Random errors may be caused by variations in disk velocity and therefore, one technique for correcting for random errors includes reducing velocity jitter. Additionally, random errors can be corrected by improving interval control during the propagation of trigger patterns used in writing timing information on storage media. Further, random errors, in the writing of timing information, can be corrected during a single revolution of the storage media. This eliminates additional rotations, thereby providing a large capital cost savings.

9. 发明授权

US5991115A Method and apparatus for determining separation between read and write elements of a transducer 失效
标题翻译：用于确定换能器的读取和写入元件之间的分离的方法和装置
公开(公告)号：US5991115A
公开(公告)日：1999-11-23
申请号：US211138
申请日：1998-12-14
申请人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell C. Webb , Edward John Yarmchuk
发明人： Timothy Joseph Chainer , Anthony Paul Praino , Mark Delorman Schultz , Bucknell C. Webb , Edward John Yarmchuk
IPC分类号： G11B5/55 , G11B5/596 , G11B19/04 , G11B21/10
CPC分类号： G11B19/04 , G11B21/106 , G11B5/5565 , G11B5/59633
摘要： Improvements in placement of timing patterns in self servo writing include correcting for random and systematic errors due to geometric effects. In a disk drive having a recording head with separate read and write elements, a method for determining separation between the elements and for correcting for such errors as a function of skew angle between the head and the disk. Errors resulting from misalignment and non-parallelism of the elements as well as misalignment of the head on it its actuator are also detected and corrected. Errors due to changes in rotational velocity of the disk and misplacement of timing patterns with respect to adjacent timing patterns are detected and corrected. In general, a single revolution process may be used to both write and detect random errors on each track and corrected on subsequent tracks.
摘要翻译：自动写入中定时模式布置的改进包括纠正由于几何效应引起的随机和系统误差。在具有具有分离的读取和写入元件的记录头的磁盘驱动器中，确定元件之间的间隔并用于校正这种错误的方法，其作为头部和盘之间的歪斜角的函数。元件的不对准和不平行度导致的误差以及头部在其致动器上的未对准性也被检测和校正。检测并纠正由于盘的旋转速度的变化引起的错误和定时图案相对于相邻的定时图案的错位。通常，可以使用单次旋转处理来写入和检测每个轨道上的随机误差并在随后的轨道上进行校正。

10. 发明授权

US5850374A Method and apparatus for data storage using thermal proximity imaging 失效
公开(公告)号：US5850374A
公开(公告)日：1998-12-15
申请号：US636384
申请日：1996-04-23
申请人： David William Abraham , Anthony Paul Praino , Mark Edward Re , Hemantha Kumar Wickramasinghe
发明人： David William Abraham , Anthony Paul Praino , Mark Edward Re , Hemantha Kumar Wickramasinghe
IPC分类号： G01N25/72 , G11B5/00 , G11B5/012 , G11B5/02 , G11B5/596 , G11B5/60 , G11B5/82 , G11B11/00 , G11B11/06 , G11B13/00 , G11B17/32 , G11B19/04 , G11B20/10 , G11B20/24 , G11B33/10
CPC分类号： G11B20/10009 , G01N25/72 , G11B11/00 , G11B13/00 , G11B17/32 , G11B20/24 , G11B33/10 , G11B5/00 , G11B5/012 , G11B5/59683 , G11B5/607 , G11B11/06 , G11B19/04 , G11B2005/0021 , G11B5/02 , G11B5/59633 , G11B5/6005 , G11B5/82
摘要： A method and apparatus for accessing a data storage medium having raised and lowered portions indicative of data stored on the medium. Energy is supplied to a sensor which is moved relative to, and in close proximity to, a surface of the medium on which the data in the form of raised and lowered portions is stored. The sensor and the storage medium are moved in relation thereto, such that the sensor remains at a substantially constant fly spacing therefrom. A decrease in temperature of the sensor is detected when it is in proximity to a variation, i.e., a raised portion on the medium. This detected decrease in temperature associated with a raised variation, e.g., asperity, can be used as the basis upon which to detect the data on the data storage medium. The data storage medium may also contain magnetically stored data, such that the surface variations and the magnetic characteristics of the data storage medium can both be utilized to store data thereon.

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