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1. 发明授权

US06693760B1 Preamplifier circuit configurable to allow simultaneous read and write operations for self-servo writing a disk drive 有权
标题翻译：前置放大器电路可配置为允许同时读写操作，用于自动写入磁盘驱动器
公开(公告)号：US06693760B1
公开(公告)日：2004-02-17
申请号：US09540445
申请日：2000-03-31
申请人： Mohamad T. Krounbi , John Cuda , Jack M. Chue , Robert Leslie Cloke , David Price Turner , Gary L. Dunbar
发明人： Mohamad T. Krounbi , John Cuda , Jack M. Chue , Robert Leslie Cloke , David Price Turner , Gary L. Dunbar
IPC分类号： G11B2102
CPC分类号： G11B5/59633 , G11B5/024
摘要： A preamplifier circuit is disclosed comprising a data input for receiving write data, a read signal output for outputting an amplified read signal, a read signal input for receiving a read signal from a read element, and a write signal output for supplying a write signal to a write element. The preamplifier circuit further comprises a first amplifier circuit, responsive to the write data, for generating the write signal supplied to the write element, and a second amplifier circuit for amplifying the read signal from the read element to generate the amplified read signal output via the read signal output. A head control circuit, responsive to head select data, simultaneously enables the first and second amplifier circuits to perform a simultaneous read and write operation.
摘要翻译：公开了一种前置放大器电路，包括用于接收写入数据的数据输入端，用于输出放大的读取信号的读取信号输出端，用于从读取元件接收读取信号的读取信号输入端和用于将写入信号提供给写元素。前置放大器电路还包括响应于写入数据的第一放大器电路，用于产生提供给写入元件的写入信号，以及第二放大器电路，用于放大来自读取元件的读取信号，以产生经由读信号输出。响应于头部选择数据的头部控制电路同时使第一和第二放大器电路执行同时的读取和写入操作。

2. 发明授权

US06600620B1 Self-servo writing a disk drive by propagating interleaved sets of timing clocks and servo bursts during alternate time intervals 有权
标题翻译：通过在交替时间间隔期间传播交错的定时时钟和伺服脉冲串来自动伺服写入磁盘驱动器
公开(公告)号：US06600620B1
公开(公告)日：2003-07-29
申请号：US09541136
申请日：2000-03-31
申请人： Mohamad T. Krounbi , John Cuda , Jack M. Chue , Robert Leslie Cloke , David Price Turner , Gary L. Dunbar
发明人： Mohamad T. Krounbi , John Cuda , Jack M. Chue , Robert Leslie Cloke , David Price Turner , Gary L. Dunbar
IPC分类号： G11B2102
CPC分类号： G11B5/59644
摘要： The present invention may be regarded as a self-servo writing disk drive comprising a head having a read element radially offset from a write element. During a first time interval, the read element is positioned over a first radial location to read first A clock data to generate first circumferential timing information and first A servo bursts to generate first position control information. The first position control information is used for positioning the write element over a second radial location, and the first circumferential timing information is used for writing second B clock data and second B servo bursts to the second radial location. During a second time interval, the read element is positioned over the first radial location to read first B clock data to generate second circumferential timing information and first B servo bursts to generate second position control information. The second position control information is used for positioning the write element over the second radial location, and the second circumferential timing information is used for writing second A clock data and second A servo bursts to the second radial location.
摘要翻译：本发明可以被认为是包括具有从写入元件径向偏移的读取元件的头的自伺服写入盘驱动器。在第一时间间隔期间，读取元件位于第一径向位置上以读取第一A时钟数据以产生第一周期定时信息和第一A伺服脉冲串以产生第一位置控制信息。第一位置控制信息用于在第二径向位置定位写元件，并且第一周期定时信息用于将第二B时钟数据和第二B伺服脉冲串写入第二径向位置。在第二时间间隔期间，读取元件位于第一径向位置上以读取第一B时钟数据以产生第二周期定时信息和第一B伺服突发，以产生第二位置控制信息。第二位置控制信息用于将写元件定位在第二径向位置上，并且第二周期定时信息用于将第二A时钟数据和第二A伺服脉冲串写入第二径向位置。

3. 发明授权

US06178056B1 Disk drive employing state variable trap registers for providing stored servo and user data state variables to sampled-data channel 有权
标题翻译：采用状态变量陷阱寄存器的磁盘驱动器，用于向采样数据通道提供存储的伺服和用户数据状态变量
公开(公告)号：US06178056B1
公开(公告)日：2001-01-23
申请号：US09293487
申请日：1999-04-15
申请人： Robert Leslie Cloke , Richard W. Hull , Vafa James Rakshani , David Price Turner
发明人： Robert Leslie Cloke , Richard W. Hull , Vafa James Rakshani , David Price Turner
IPC分类号： G11B509
CPC分类号： G11B20/10055 , G11B5/5965 , G11B20/10009 , G11B20/10037 , G11B20/1217 , G11B20/1258 , G11B20/1403 , G11B27/3027 , G11B2020/10888 , G11B2020/1232 , G11B2020/1267 , G11B2020/1275 , G11B2020/1282 , G11B2020/1287 , G11B2020/1292 , G11B2220/20 , G11B2220/2516
摘要： A disk drive includes a disk surface having a plurality of tracks arranged in an embedded servo format including servo track segments for storing servo data and data track segments for storing user data. The disk drive includes a read element operative during a user-data read operation for reading data from the disk surface to produce a time-multiplexed analog read signal that during a revolution of the disk represents analog read servo data during each of a first set of time intervals and represents analog read user data during each of a second set of time intervals. The disk drive includes a sampled signal processing circuit that generates a servo state variable while processing the time-multiplexed read signal during the first servo time interval and a user data state variable while processing the time-multiplexed read signal during the first user data time interval. The disk drive includes a servo state variable trap register for storing the servo state variable at the end of the first servo time interval. The disk drive includes a data state variable trap register for storing the user data state variable at the end of the first user data time interval. The disk drive includes a control circuit for providing the stored servo state variable to the sampled signal processing circuit at the beginning of the second servo time interval. The control circuit provides the stored user data state variable to the sampled signal processing circuit at the beginning of the second user data time interval.
摘要翻译：磁盘驱动器包括具有以嵌入式伺服格式布置的多个磁道的磁盘表面，包括用于存储伺服数据的伺服磁道段和用于存储用户数据的数据磁道段。磁盘驱动器包括在用户数据读取操作期间操作用于从盘表面读取数据的读取元件，以产生时间复用的模拟读取信号，该时间复用模拟读取信号在盘的转动期间代表模拟读取伺服数据，每个第一组时间间隔，并且在第二组时间间隔中的每一个期间表示模拟读取用户数据。磁盘驱动器包括采样信号处理电路，其在第一伺服时间间隔期间处理时间复用的读取信号和在第一用户数据时间间隔期间处理时间复用的读取信号的用户数据状态变量时产生伺服状态变量。磁盘驱动器包括伺服状态变量陷阱寄存器，用于在第一伺服时间间隔结束时存储伺服状态变量。磁盘驱动器包括用于在第一用户数据时间间隔结束时存储用户数据状态变量的数据状态变量陷阱寄存器。磁盘驱动器包括控制电路，用于在第二伺服时间间隔开始时将所存储的伺服状态变量提供给采样信号处理电路。控制电路在第二用户数据时间间隔开始时将采集的用户数据状态变量提供给采样信号处理电路。

4. 发明授权

US06441981B1 Disk drive including a recording surface employing servo zones recorded at a channel frequency different from data zones 有权
标题翻译：磁盘驱动器包括采用以不同于数据区的通道频率记录的伺服区的记录表面
公开(公告)号：US06441981B1
公开(公告)日：2002-08-27
申请号：US09846056
申请日：2001-05-01
申请人： Robert Leslie Cloke , Richard William Hull , Vafa James Rakshani , David Price Turner
发明人： Robert Leslie Cloke , Richard William Hull , Vafa James Rakshani , David Price Turner
IPC分类号： G11B509
CPC分类号： G11B20/10055 , G11B5/5965 , G11B20/10009 , G11B20/10037 , G11B20/1217 , G11B20/1258 , G11B20/1403 , G11B27/3027 , G11B2020/10888 , G11B2020/1232 , G11B2020/1267 , G11B2020/1275 , G11B2020/1282 , G11B2020/1287 , G11B2020/1292 , G11B2220/20 , G11B2220/2516
摘要： A disk drive includes a disk having a disk surface, the disk surface having a plurality of tracks arranged in an embedded servo format. The disk surface includes a plurality of radially-extending user-data regions and a plurality of radially-extending servo-data regions. Each user-data region has a plurality of data zones in each of which user data are stored in a plurality of track segments at a data channel frequency particular to that data zone. Each servo-data region has a plurality of servo zones in each of which servo data are stored in a plurality of track segments at a servo channel frequency particular to that servo zone, wherein in at least one of the tracks having servo data and user data, the servo channel frequency differs from the data channel frequency.
摘要翻译：磁盘驱动器包括具有盘表面的盘，盘表面具有以嵌入式伺服格式布置的多个轨道。盘表面包括多个径向延伸的用户数据区域和多个径向延伸的伺服数据区域。每个用户数据区域具有多个数据区域，每个数据区域中的每一个用户数据以特定于该数据区域的数据通道频率存储在多个轨道段中。每个伺服数据区域具有多个伺服区，每个伺服区中的伺服数据以特定于该伺服区的伺服通道频率存储在多个磁道段中，其中至少一个磁道具有伺服数据和用户数据伺服通道频率与数据通道频率不同。

5. 发明授权

US06262857B1 Disk drive including a recording surface employing servo zones with banded data zones 失效
标题翻译：磁盘驱动器包括采用具有带状数据区域的伺服区域的记录表面
公开(公告)号：US06262857B1
公开(公告)日：2001-07-17
申请号：US09103674
申请日：1998-06-23
申请人： Richard William Hull , Vafa James Rakshani , David Price Turner , Robert Leslie Cloke
发明人： Richard William Hull , Vafa James Rakshani , David Price Turner , Robert Leslie Cloke
IPC分类号： G11B509
CPC分类号： G11B20/10055 , G11B5/5965 , G11B20/10009 , G11B20/10037 , G11B20/1217 , G11B20/1258 , G11B20/1403 , G11B27/3027 , G11B2020/10888 , G11B2020/1232 , G11B2020/1267 , G11B2020/1275 , G11B2020/1282 , G11B2020/1287 , G11B2020/1292 , G11B2220/20 , G11B2220/2516
摘要： A disk drive includes a disk having a disk surface, the disk surface having a plurality of tracks arranged in an embedded servo format. The disk surface includes a plurality of radially-extending user-data regions and a plurality of radially-extending servo-data regions. Each user-data region has a plurality of data zones in each of which user data are stored in a plurality of track segments at a data channel frequency particular to that data zone. Each servo-data region has a plurality of servo zones in each of which servo data are stored in a plurality of track segments at a servo channel frequency particular to that servo zone. The servo channel frequency differs from the data channel frequency for at least one track.
摘要翻译：磁盘驱动器包括具有盘表面的盘，盘表面具有以嵌入式伺服格式布置的多个轨道。盘表面包括多个径向延伸的用户数据区域和多个径向延伸的伺服数据区域。每个用户数据区域具有多个数据区域，每个数据区域中的每一个用户数据以特定于该数据区域的数据通道频率存储在多个轨道段中。每个伺服数据区域具有多个伺服区域，每个伺服区域中的每个伺服区域以特定于该伺服区域的伺服通道频率存储在多个磁道段中。伺服通道频率与至少一个轨道的数据通道频率不同。

6. 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。

7. 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。

8. 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。

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