-
21.发明授权Phase locked loop employing a fractional frequency synthesizer as a variable oscillator 有权采用分数频率合成器作为可变振荡器的锁相环公开(公告)号：US06710951B1
公开(公告)日：2004-03-23
申请号：US09999888
申请日：2001-10-31
申请人： Robert L. Cloke
发明人： Robert L. Cloke
IPC分类号： G11B2006
CPC分类号： G11B5/59633 , G11B20/1426 , H03L7/087 , H03L7/0992 , H03L7/1976
摘要： A phase locked loop (PLL) circuit is disclosed comprising a phase detector for generating a phase error between an input oscillating signal and an output oscillating signal. A fractional frequency synthesizer (FFS) generates the output oscillating signal in response to the phase error, wherein the FFS comprises an input for receiving a reference oscillating signal, and a fractional divider responsive to variables I and Fr. The variable I is an integer value, and the variable Fr is a fractional value, both of which are generated in response to the phase error.
摘要翻译： 公开了一种锁相环（PLL）电路，其包括用于在输入振荡信号和输出振荡信号之间产生相位误差的相位检测器。 分数频率合成器（FFS）响应于相位误差产生输出振荡信号，其中FFS包括用于接收参考振荡信号的输入端和响应变量I和Fr的分数分频器。 变量I是一个整数值，变量Fr是一个分数值，它们都是响应于相位误差产生的。
-
22.发明授权Computer system comprising a host connected to a disk drive employing state variable trap registers for providing stored servo and user data state variables to sampled-data channel 有权计算机系统包括连接到采用状态变量陷阱寄存器的磁盘驱动器的主机，用于向采样数据信道提供存储的伺服和用户数据状态变量公开(公告)号：US06487032B1
公开(公告)日：2002-11-26
申请号：US10083745
申请日：2002-02-25
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 computer system is disclosed comprising a host connected to a disk drive, the disk drive comprising 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： 公开了一种计算机系统，包括连接到磁盘驱动器的主机，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。
-
23.发明授权Disk drive employing read channel IC with common port for data and servo 有权磁盘驱动器采用带通用端口的读通道IC，用于数据和伺服公开(公告)号：US06278568B1
公开(公告)日：2001-08-21
申请号：US09223475
申请日：1998-12-30
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 has 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. Data from the disk surface is read 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 further includes a controller and a channel integrated circuit chip. The controller includes a controller port. The channel integrated circuit chip includes an input for receiving the time-multiplexed analog read signal. The time-multiplexed analog read signal is processed to generate data symbols representing recovered servo data and recovered user data. The channel integrated circuit chip includes a channel port for transferring both the recovered servo data and the recovered user data. The disk drive further includes a communication bus connected between the channel port and the controller port. The channel port transfers both the recovered servo data and the recovered user data to the communication bus. The communication bus transfers both the recovered servo data and the recovered user data to the controller port.
摘要翻译： 磁盘驱动器包括具有盘表面的盘。 磁盘表面具有以嵌入式伺服格式布置的多个磁道，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。 读取来自磁盘表面的数据以产生时间复用的模拟读取信号，其在盘的转动期间表示在第一组时间间隔期间的每一个中的模拟读取伺服数据，并且在第二组 时间间隔。 磁盘驱动器还包括控制器和通道集成电路芯片。 控制器包括一个控制器端口。 信道集成电路芯片包括用于接收时间复用的模拟读取信号的输入端。 处理时分复用模拟读取信号以产生表示恢复的伺服数据和恢复的用户数据的数据符号。 通道集成电路芯片包括用于传送恢复的伺服数据和恢复的用户数据的通道端口。 磁盘驱动器还包括连接在通道端口和控制器端口之间的通信总线。 通道端口将恢复的伺服数据和恢复的用户数据传送到通信总线。 通信总线将恢复的伺服数据和恢复的用户数据传送到控制器端口。
-
24.发明授权Polling a preamplifier within a disk drive to remotely determine pre-established parametric values 有权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
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。
-
25.发明授权Disk drive comprising a programmable preamplifier including a multiplexer for selecting between internal digital signals for output to a terminal 失效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
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。
-
公开(公告)号：US4697098A
公开(公告)日：1987-09-29
申请号：US743037
申请日：1985-06-10
申请人： Robert L. Cloke
发明人： Robert L. Cloke
IPC分类号： G11B5/09 , G01R29/02 , G11B20/22 , H03K5/1532 , H03K5/153
CPC分类号： H03K5/1532 , G01R29/02
摘要： A gate generator useful for validating readout signals incorporates three channels, including differentiators and threshold comparators, and a logic circuit coupled to the output circuits of the channels for passing valid readout signals. The output signals of the comparators and of detected zero crossings derived from a differentiated signal are fed to the logic circuit for processing.
摘要翻译： 用于验证读出信号的门极发生器包括三个通道，包括微分器和阈值比较器，以及耦合到通道的输出电路的逻辑电路，用于传递有效的读出信号。 比较器的输出信号和从微分信号导出的检测到的过零点被馈送到逻辑电路进行处理。
-
公开(公告)号：US4071832A
公开(公告)日：1978-01-31
申请号：US695828
申请日：1976-06-14
申请人： Robert L. Cloke
发明人： Robert L. Cloke
IPC分类号： H03B5/12
CPC分类号： H03B5/1212 , H03B5/1231
摘要： An oscillator utilizing a pair of transistors interconnected with a resonance circuit in the collector circuits thereof such that by regulation of the current flow to the connected emitters, the frequency of oscillation is regulated.
摘要翻译： 利用在其集电电路中与谐振电路互连的一对晶体管的振荡器，使得通过调节到连接的发射极的电流来调节振荡频率。
-
-
-
-
-
-
搜索结果
27 条记录 (耗时 0.031 秒)
