专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06191909B1 Polling a preamplifier within a disk drive to remotely determine pre-established parametric values 有权
标题翻译：在磁盘驱动器内轮询前置放大器以远程确定预先建立的参数值
公开(公告)号：US06191909B1
公开(公告)日：2001-02-20
申请号：US09593315
申请日：2000-06-13
申请人： Robert L. Cloke , David Price Turner , Robert Ellis Caddy, Jr. , Michael Rodger Spaur
发明人： Robert L. Cloke , David Price Turner , Robert Ellis Caddy, Jr. , Michael Rodger Spaur
IPC分类号： G11B503
CPC分类号： G11B19/02 , G11B5/012 , G11B5/09 , G11B5/455 , G11B20/10009 , G11B33/10 , G11B2005/0013 , G11B2005/0016 , G11B2005/0018
摘要： A system for polling a preamplifier unit to remotely determine pre-established parametric values in a disk drive is disclosed. The disk drive comprises a controller, a preamplifier, and a plurality of transducers. The system for polling the preamplifier comprises means in the controller for generating a succession of serial bit characters each representative of a different pattern. A means is provided for successively transferring said serial bit characters from the controller to the preamplifier unit. A plurality of individual bit lines are provided in the preamplifier unit representative of at least one parametric value. A means is included in the preamplifier unit for comparing each serial bit pattern character received with said plurality of individual bit lines, and for generating a match signal when a serial bit pattern character received matches the plurality of individual bit lines. A means is provided for transferring the match signal from the preamplifier unit to the controller.
摘要翻译：公开了一种用于轮询前置放大器单元以远程确定盘驱动器中的预先确定的参数值的系统。磁盘驱动器包括控制器，前置放大器和多个换能器。用于轮询前置放大器的系统包括控制器中的装置，用于产生代表不同模式的一系列串行位字符。提供了用于将所述串行比特字符从控制器连续传送到前置放大器单元的装置。在前置放大器单元中提供表示至少一个参数值的多个单独的位线。一个装置包括在前置放大器单元中，用于比较接收到的所述多个单独位线的每个串行位模式字符，并且用于当接收的串行位模式字符匹配多个单独位线时产生匹配信号。提供了用于将匹配信号从前置放大器单元传送到控制器的装置。

2. 发明授权

US06111717A Disk drive comprising a programmable preamplifier including a multiplexer for selecting between internal digital signals for output to a terminal 失效
标题翻译：磁盘驱动器包括可编程前置放大器，其包括多路复用器，用于在内部数字信号之间进行选择以输出到终端
公开(公告)号：US06111717A
公开(公告)日：2000-08-29
申请号：US36375
申请日：1998-03-06
申请人： Robert L. Cloke , David Price Turner , Robert Ellis Caddy, Jr. , Michael Rodger Spaur
发明人： Robert L. Cloke , David Price Turner , Robert Ellis Caddy, Jr. , Michael Rodger Spaur
IPC分类号： G11B5/00 , G11B5/012 , G11B5/09 , G11B5/455 , G11B19/02 , G11B20/10 , G11B33/10 , G11B5/02
CPC分类号： G11B19/02 , G11B20/10009 , G11B5/012 , G11B5/09 , G11B2005/0013 , G11B2005/0016 , G11B2005/0018 , G11B33/10 , G11B5/455
摘要： A disk drive comprising a plurality of read/write transducers, a programmable preamplifier, and a controller for furnishing control and data signals to the programmable preamplifier and for receiving data signals therefrom, is disclosed. The programmable preamplifier comprising a write data input circuit for receiving data signals to be supplied to a transducer, a read data output circuit for manifesting data signals supplied to said preamplifier unit by a transducer, and a transducer interface circuit for providing write data signals to a transducer and receiving read data signals from a transducer. The programmable preamplifier further comprises a multiplexer comprising a first multiplexer input connected to receive a first internal digital signal, a second multiplexer input connected to receive a second internal digital signal, a control input connected to receive a control signal for selecting between the first and second internal digital signals, and a multiplexer output for outputting the selected first or second internal digital signal. The multiplexer output is connected to an output terminal of the programmable preamplifier. The programmable preamplifier comprises a serial interface circuit for receiving serially presented control signals from the associated controller, including the control signal for selecting between the first and second internal digital signals.
摘要翻译：公开了一种包括多个读/写换能器，可编程前置放大器和用于向可编程前置放大器提供控制和数据信号并用于从其接收数据信号的控制器的盘驱动器。可编程前置放大器包括用于接收要提供给换能器的数据信号的写数据输入电路，用于显示由换能器提供给所述前置放大器单元的数据信号的读数据输出电路，以及用于向传感器和从换能器接收读取数据信号。可编程前置放大器还包括多路复用器，其包括连接以接收第一内部数字信号的第一多路复用器输入，连接以接收第二内部数字信号的第二多路复用器输入端，连接以接收用于在第一和第二数字信号之间进行选择的控制信号的控制输入内部数字信号和用于输出所选择的第一或第二内部数字信号的多路复用器输出。多路复用器输出连接到可编程前置放大器的输出端。可编程前置放大器包括用于从相关联的控制器接收串行呈现的控制信号的串行接口电路，包括用于在第一和第二内部数字信号之间进行选择的控制信号。

3. 发明授权

US5726821A Programmable preamplifier unit with serial interface for disk data storage device using MR heads 失效
标题翻译：可编程前置放大器单元，具有使用MR磁头的磁盘数据存储设备的串行接口
公开(公告)号：US5726821A
公开(公告)日：1998-03-10
申请号：US577606
申请日：1995-12-22
申请人： Robert L. Cloke , David Price Turner , Robert Ellis Caddy, Jr. , Michael Rodger Spaur
发明人： Robert L. Cloke , David Price Turner , Robert Ellis Caddy, Jr. , Michael Rodger Spaur
IPC分类号： G11B5/00 , G11B5/012 , G11B5/09 , G11B5/455 , G11B19/02 , G11B20/10 , G11B33/10 , G11B5/03
CPC分类号： G11B19/02 , G11B20/10009 , G11B5/012 , G11B5/09 , G11B2005/0013 , G11B2005/0016 , G11B2005/0018 , G11B33/10 , G11B5/455
摘要： A disk drive preamplifier unit includes a serial interface circuit for receiving serially formatted control signals from an associated disk drive controller. The control signals contain several types of information, including head select, write current magnitude, bias for MR transducers, gain magnitude for a variable gain amplifier, and test and mode information. The preamplifier unit incorporates several test circuits in addition to the usual write unsafe detector circuit, and a multiplexer controlled by the mode control signals from the serial interface unit is used to select which test circuit or detector is coupled to a common test output terminal whose signals are coupled back to the controller for further processing. The preamplifier can be used to remotely test the head population of the head disk assembly, to measure the MR bias current through any of the MR transducers and to signal the controller in response to polling characters when a match is obtained between a character and preestablished multi-bit parameter information fixed in the preamplifier unit. A write current generator is shared by the write transducers and the MR bias test circuit, with a current scaling unit used to provide different current ranges from the common source. The preamplifier unit affords remote control and testing which can be adapted to evolving systems using firmware changes alone.
摘要翻译：磁盘驱动器前置放大器单元包括用于从相关联的磁盘驱动器控制器接收串行格式化的控制信号的串行接口电路。控制信号包含几种类型的信息，包括头部选择，写入电流幅度，MR换能器的偏置，可变增益放大器的增益幅度以及测试和模式信息。前置放大器单元除了通常的写入不安全检测器电路之外还包括多个测试电路，并且由来自串行接口单元的模式控制信号控制的多路复用器用于选择哪个测试电路或检测器耦合到公共测试输出端，其信号被耦合回控制器用于进一步处理。前置放大器可用于远程测试头盘组件的头部群体，以测量通过任何MR换能器的MR偏置电流，并且当在字符和预先建立的多个像素之间获得匹配时响应于轮询字符来发信号通知控制器位参数信息固定在前置放大器单元中。写入电流发生器由写入传感器和MR偏置测试电路共享，电流缩放单元用于提供来自公共源的不同电流范围。前置放大器单元提供远程控制和测试，可以使用固件更改来适应不断发展的系统。

4. 发明授权

US4122501A System for recording and reading back data on a recording media 失效
标题翻译：用于在记录介质上记录和读回数据的系统
公开(公告)号：US4122501A
公开(公告)日：1978-10-24
申请号：US750204
申请日：1976-12-13
申请人： Frank J. Sordello , Robert L. Cloke
发明人： Frank J. Sordello , Robert L. Cloke
IPC分类号： G11B20/14 , G11B20/16 , H03K3/02 , H03L7/06 , H03L7/08 , H03L7/14 , G11B5/09
CPC分类号： G11B20/16
摘要： A system for detecting data from and recording data on a recording media whereby a single clocking signal generator is utilized for generating the clocking signal both during the recording of data on and the reading of data from the recording media.
摘要翻译：一种用于在记录介质上检测数据和记录数据的系统，由此在记录数据和从记录介质读取数据期间，单个时钟信号发生器用于产生时钟信号。

5. 发明授权

US06924961B1 Method and apparatus for self servowriting of tracks of a disk drive using an observer based on an equivalent one-dimensional state model 失效
标题翻译：使用基于等效一维状态模型的观察者自动伺服磁盘驱动器的磁道的方法和装置
公开(公告)号：US06924961B1
公开(公告)日：2005-08-02
申请号：US10232640
申请日：2002-08-30
申请人： Hemant Melkote , Robert L. Cloke , Vinay K. Agarwal
发明人： Hemant Melkote , Robert L. Cloke , Vinay K. Agarwal
IPC分类号： G11B5/596
CPC分类号： G11B5/59655
摘要： A method is disclosed for writing servo patterns for tracks on a rotating magnetic disk medium of a disk drive. Servo patterns are written on a reference track of the disk medium. Track following of the written servo patterns on the reference track is performed using a servo loop having a closed-loop response. A position error signal is generated for the reference track based on the track following. A correction signal is generated based on the track following using an observer of a one-dimensional state model that is equivalent to a two-dimensional state model of the servo loop. Servo patterns are written on a target track during track following of the reference track. The position error signal of the servo loop is adjusted based on the correction signal to reduce radial error propagation from the reference track to the target track.
摘要翻译：公开了一种用于在盘驱动器的旋转磁盘介质上写入用于轨道的伺服模式的方法。伺服模式写在盘介质的参考轨道上。使用具有闭环响应的伺服环路来执行跟踪在参考轨道上的写入的伺服模式。基于跟踪轨迹为参考轨道生成位置误差信号。基于跟踪使用等同于伺服环路的二维状态模型的一维状态模型的观察者的轨迹生成校正信号。在跟踪轨道的跟踪期间，伺服模式被写在目标轨道上。基于校正信号调整伺服环路的位置误差信号，以减小从参考轨道到目标轨道的径向误差传播。

6. 发明授权

US06819518B1 Method and apparatus for self servowriting of tracks of a disk drive using a servo control loop having a two-dimensional digital state compensator 失效
标题翻译：使用具有二维数字状态补偿器的伺服控制回路自动伺服磁盘驱动器的磁道的方法和装置
公开(公告)号：US06819518B1
公开(公告)日：2004-11-16
申请号：US10280603
申请日：2002-10-24
申请人： Hemant Melkote , Robert L. Cloke , Vinay K. Agarwal
发明人： Hemant Melkote , Robert L. Cloke , Vinay K. Agarwal
IPC分类号： G11B2102
CPC分类号： G11B5/59633
摘要： A method is disclosed for defining tracks on a rotating magnetic disk medium of a disk drive. Reference tracks are followed using a servo control loop while writing servo burst patterns defining a first target servo track. The servo control loop includes a two-dimensional digital state compensator having a first input that receives position error signals, a first output that generates control signals for positioning a transducer head, a second output that generates track-following state variables, and a second input that receives stored track-following state variables. The first target track is followed using the servo control loop while servo burst patterns are written, and while the stored track-following state variables corresponding to the servo burst patterns defining the first target track are applied to the second input.
摘要翻译：公开了一种用于在盘驱动器的旋转磁盘介质上定义轨道的方法。在编写定义第一目标伺服轨道的伺服脉冲串模式时，使用伺服控制回路遵循参考轨道。伺服控制回路包括具有接收位置误差信号的第一输入的二维数字状态补偿器，产生用于定位换能器头的控制信号的第一输出，产生跟踪跟踪状态变量的第二输出和第二输入它接收存储的跟踪跟踪状态变量。在伺服脉冲串模式被写入的同时跟踪使用伺服控制回路的第一目标轨迹，并且在将定义了第一目标轨道的伺服脉冲串模式对应的所存储的跟踪跟踪状态变量应用于第二输入。

7. 发明授权

US06992851B1 Method for nonsequentially writing reference spiral servo patterns to a disk to compensate for disk expansion 失效
标题翻译：将参考螺旋伺服模式顺序地写入磁盘以补偿磁盘扩展的方法
公开(公告)号：US06992851B1
公开(公告)日：2006-01-31
申请号：US10882844
申请日：2004-06-30
申请人： Robert L. Cloke
发明人： Robert L. Cloke
IPC分类号： G11B21/02
CPC分类号： G11B5/59633
摘要： A method is disclosed for reducing disk expansion effects while writing spiral reference patterns on a disk. The disk drive comprises control circuitry and a head disk assembly (HDA). In the method, an external spiral servo writer is used to control a radial location of the head for writing a plurality of the spiral reference patterns in an order such that at least two of the spiral reference patterns are not written temporally sequential to an adjacent spiral reference pattern. The head internal to the disk drive is used to read the spiral reference patterns in order to write product servo bursts to the disk, thereby defining a plurality of radially spaced, concentric data tracks.
摘要翻译：公开了一种在将螺旋参考图案写在磁盘上时减少磁盘扩展效果的方法。磁盘驱动器包括控制电路和磁头盘组件（HDA）。在该方法中，使用外部螺旋伺服写入器来控制用于写入多个螺旋参考图案的头部的径向位置，使得至少两个螺旋参考图案在时间上不依次写入相邻螺旋线参考模式。磁盘驱动器内部的磁头用于读取螺旋参考模式，以便将产品伺服脉冲串写入磁盘，从而定义多个径向间隔的同心数据磁道。

8. 发明授权

US06989954B1 Demodulating servo sectors and spiral tracks using common circuitry 失效
标题翻译：使用公共电路解调伺服扇区和螺旋轨道
公开(公告)号：US06989954B1
公开(公告)日：2006-01-24
申请号：US10769480
申请日：2004-01-31
申请人： Tehri S. Lee , Robert L. Cloke , Siri S. Weerasooriya
发明人： Tehri S. Lee , Robert L. Cloke , Siri S. Weerasooriya
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/59688
摘要： A method of manufacturing a disk drive by demodulating product servo sectors and spiral tracks written on a disk of the disk drive is disclosed. An external spiral servo writer writes a plurality of spiral tracks that spiral from an outer diameter to an inner diameter of the disk. Each spiral track comprises a high frequency signal interrupted at a predetermined interval by a sync mark. The spiral tracks are used to write product servo sectors to the disk during a fill operation. Common circuitry, such as burst demodulation circuitry, is used to demodulate the high frequency signal in the spiral tracks during the fill operation as well as demodulate the product servo sectors.
摘要翻译：公开了一种通过解调写入磁盘驱动器的磁盘上的产品伺服扇区和螺旋磁道来制造磁盘驱动器的方法。外部螺旋伺服写入器写入从盘的内径螺旋形的多个螺旋形轨道。每个螺旋轨道包括通过同步标记以预定间隔中断的高频信号。螺旋轨道用于在填充操作期间将产品伺服扇区写入磁盘。诸如脉冲串解调电路之类的公共电路用于在填充操作期间对螺旋磁道中的高频信号进行解调以及解调产品伺服扇区。

9. 发明授权

US4599570A Phase detector with independent offset correction 失效
标题翻译：相位检测器，具有独立的偏移校正
公开(公告)号：US4599570A
公开(公告)日：1986-07-08
申请号：US400494
申请日：1982-07-21
申请人： Robert L. Cloke
发明人： Robert L. Cloke
IPC分类号： G01R25/00 , H03D13/00 , H03L7/089 , H03K5/13 , H03K5/22
CPC分类号： G01R25/00 , H03D13/003 , H03L7/089
摘要： A method and apparatus of offset correction which can be applied to control systems, primarily phase-locked-loop systems, and which permits sampling of the error signals for use as an auxiliary input to the system in order to center the error signal around zero.
摘要翻译：偏移校正的方法和装置，其可以应用于控制系统，主要是锁相环系统，并且允许对误差信号进行采样以用作系统的辅助输入，以便将误差信号置于零附近。

10. 发明授权

US4506236A Composite filter/differentiator 失效
标题翻译：复合滤波器/微分器
公开(公告)号：US4506236A
公开(公告)日：1985-03-19
申请号：US449883
申请日：1982-12-15
申请人： Robert L. Cloke
发明人： Robert L. Cloke
IPC分类号： H03H7/01 , H03H7/48 , H03H17/00 , H03K9/04
CPC分类号： H03H7/0115 , H03H7/48
摘要： There is shown and described a relatively simple electronic circuit using few discrete components which is used to replace the filter and delay line differentiator in existing circuits. The new circuit provides a simultaneous output of even and odd signals which have the same transfer function except for the derivative operation. The circuit is especially useful in read and write channels of a disk drive apparatus.
摘要翻译：示出并描述了使用很少的分立元件的相对简单的电子电路，其用于替代现有电路中的滤波器和延迟线微分器。新电路提供除了导数运算之外具有相同传输功能的偶数和奇数信号的同时输出。该电路在磁盘驱动装置的读和写通道中特别有用。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式