公开(公告)号：US5424638A

公开(公告)日：1995-06-13

申请号：US219991

申请日：1994-03-30

Applicant: William D. Huber

Inventor： William D. Huber

IPC: G01R33/12 ,  G11B20/18 ,  G11B27/36 ,  G01N27/82 ,  G11B27/00

CPC classification number: G11B20/10037 ,  G01R33/1207 ,  G11B20/182 ,  G11B27/36

Abstract: An apparatus and method for detecting defects in the magnetic medium of a disk drive system includes sampling the output signal of the read channel of the system to provide a sampled output signal. In one embodiment, the sampled output signals from the read channel is squared. A delayed sampled output signal is also provided. The squared sampled output signal is summed with the delayed squared output signal. The square of the expected value of the sum of the squared sampled output signal and the delayed squared output signal is subtracted from the sum to provide a difference output signal. A threshold detector determines when the difference output signal of the subtraction means exceeds a predetermined threshold to provide an output signal indicative of a defect in the medium. One threshold detector determines when the absolute value of the difference output signal exceeds a predetermined threshold value. Another threshold detector determines when the difference output signal of the subtraction means exceeds either a predetermined upper threshold value or a predetermined lower value. The expected value may be a constant. In another embodiment, the absolute value of the sampled output signal and a delayed sampled absolute-value output signal are summed together.

Abstract translation: 一种用于检测盘驱动系统的磁介质中的缺陷的装置和方法，包括对系统的读通道的输出信号进行采样以提供采样的输出信号。 在一个实施例中，来自读取通道的采样输出信号是平方的。 还提供延迟采样输出信号。 平方采样输出信号与延迟平方输出信号相加。 将平方采样输出信号和延迟平方输出信号之和的预期值的平方从和中减去以提供差分输出信号。 阈值检测器确定减法装置的差分输出信号何时超过预定阈值以提供指示介质中缺陷的输出信号。 一个阈值检测器确定差分输出信号的绝对值何时超过预定阈值。 另一个阈值检测器确定减法装置的差分输出信号何时超过预定的上阈值或预定的较低值。 预期值可能是一个常数。 在另一个实施例中，采样输出信号和延迟采样的绝对值输出信号的绝对值相加在一起。

公开(公告)号：US4953041A

公开(公告)日：1990-08-28

申请号：US301515

申请日：1989-01-24

Applicant: William D. Huber

Inventor： William D. Huber

IPC: G11B5/09 ,  G11B20/10

CPC classification number: G11B20/10046 ,  G11B20/10009

Abstract: A read channel detector circuit for recovery of digital data from a readback waveform produced by a magnetic recording head is disclosed. The detector circuit includes a forward filter for slimming the rising edge and slurring the falling edge of an isolated input magnetic pulse. Quantized feedback techniques are then used to produce a compensating waveform which is substantially complimentary to the slurred falling edge of the isolated magnetic pulse. The complimentary waveform is added to the forward filter output to produce a waveform which is substantially a step function. This step function corresponds to a single digital transition, either positive-going or negative-going in a digital output sequence. The equalized waveform is then limited by a comparator to produce the desired digital output sequence. By slimming only the rising edge of the input magnetic pulse and by using quantized feedback techiques, the overall bandwidth of the system is conserved resulting in an increased binary signalling capability without substantial intersymbol interference.

Abstract translation: 公开了一种用于从由磁记录头产生的回读波形恢复数字数据的读通道检测器电路。 检测器电路包括一个正向滤波器，用于减弱上升沿并使隔离的输入磁脉冲的下降沿剔除。 然后使用量化反馈技术来产生与孤立磁脉冲的模糊下降沿基本互补的补偿波形。 补充波形被添加到正向滤波器输出以产生基本上是阶梯函数的波形。 该步骤功能对应于数字输出序列中的单次数字转换，正向或负向。 然后，均衡波形被比较器限制以产生所需的数字输出序列。 通过仅减少输入磁脉冲的上升沿和通过使用量化反馈技术，系统的总体带宽是保守的，导致增加的二进制信令能力而没有实质的符号间干扰。

公开(公告)号：US08467151B1

公开(公告)日：2013-06-18

申请号：US12785150

申请日：2010-05-21

Applicant: William D. Huber

Inventor： William D. Huber

IPC: G11B5/48

CPC classification number: G11B5/486 ,  G11B5/484 ,  H01P1/20345 ,  H01P3/081 ,  H05K1/0245 ,  H05K1/0248 ,  H05K1/025 ,  H05K2201/09245 ,  H05K2201/09254 ,  H05K2201/09672 ,  H05K2201/09727

Abstract: A disk drive is disclosed comprising a disk, a head actuated over the disk, a preamp, and an interconnect for coupling the head to the preamp. The interconnect comprises a first transmission line stacked with a second transmission line, and a dielectric between the first transmission line and second transmission line. The transmission lines form an approximation of at least one inductor/capacitor ladder network and an approximation of at least one inductor/capacitor lattice network. The lattice network comprises a first leg and a second leg, and a cross-over hub for interconnecting the first leg and the second leg.

Abstract translation: 公开了一种磁盘驱动器，其包括盘，在盘上致动的头，前置放大器和用于将头连接到前置放大器的互连。 互连包括堆叠有第二传输线的第一传输线和第一传输线与第二传输线之间的电介质。 传输线形成至少一个电感器/电容器梯形网络的近似值和至少一个电感器/电容器网格网络的近似值。 格子网络包括第一腿和第二腿，以及用于互连第一腿和第二腿的交叉毂。

公开(公告)号：US08462466B2

公开(公告)日：2013-06-11

申请号：US12551425

申请日：2009-08-31

Applicant: William D. Huber

Inventor： William D. Huber

IPC: G11B5/48

CPC classification number: G11B5/4806

Abstract: A disk drive comprising a disk, and a head actuated over the disk, the head comprising a read element and a write element. The disk drive further comprises a preamp and an interconnect comprising a first transmission line and a second transmission line coupling the head to the preamp. A compensation network is disclosed operable to compensate for an impedance discontinuity in the first and second transmission lines, the compensation network comprising a first trace and a second trace connected in parallel with the first and second transmission lines, wherein a shape of the first and second traces varies to form at least a first capacitor.

Abstract translation: 一种磁盘驱动器，包括盘，以及在盘上致动的磁头，磁头包括读取元件和写入元件。 磁盘驱动器还包括前置放大器和互连件，其包括将头部连接到前置放大器的第一传输线和第二传输线。 公开了一种补偿网络，其可操作以补偿第一和第二传输线路中的阻抗不连续性，所述补偿网络包括与第一和第二传输线并联连接的第一轨迹和第二迹线，其中第一和第二传输线的形状 迹线变化以形成至少第一电容器。

公开(公告)号：US08274760B1

公开(公告)日：2012-09-25

申请号：US13471777

申请日：2012-05-15

Applicant: Yiduo Zhang ,  Tzong-Shii Pan ,  Yih-Jen D. Chen ,  William D. Huber

Inventor： Yiduo Zhang ,  Tzong-Shii Pan ,  Yih-Jen D. Chen ,  William D. Huber

IPC: G11B5/48 ,  G11B21/16

CPC classification number: G11B5/4833 ,  G11B5/486 ,  H05K1/0225 ,  H05K1/0253 ,  H05K1/028 ,  H05K1/056

Abstract: Disclosed herein are embodiments directed to a head gimbal assembly including a novel suspension assembly that includes a flexure tail with a first plurality of apertures in its structural layer. Each of the first plurality of apertures underlies a first trace but not a second trace. Each of a second plurality of apertures in the structural layer underlies a second trace but not the first trace. Each of the first plurality of apertures includes a corresponding region of maximum width, and each of the second plurality of apertures includes a corresponding region of maximum width, as measured in the width direction. None of the corresponding regions of maximum width of the first plurality of apertures is disposed in an overlapping position along the long axis as any of the corresponding regions of maximum width of the second plurality of apertures.

Abstract translation: 这里公开了一种实施例涉及头万向架组件，其包括新颖的悬架组件，其包括在其结构层中具有第一多个孔的弯曲尾部。 第一组多个孔中的每个孔位于第一轨迹之下，而不是第二轨迹。 结构层中的第二多个孔中的每一个在第二迹线下面而不是第一迹线。 第一多个孔中的每一个包括最大宽度的对应区域，并且第二多个孔中的每一个包括在宽度方向上测量的最大宽度的相应区域。 第一多个孔的最大宽度的对应区域中的任何一个都不沿着长轴设置在与第二多个孔的最大宽度的相应区域中的任一个相重叠的位置。

公开(公告)号：US06542443B1

公开(公告)日：2003-04-01

申请号：US09692503

申请日：2000-10-18

Applicant: William D. Huber

Inventor： William D. Huber

IPC: G11B1100

CPC classification number: G11B5/03 ,  G11B5/012 ,  G11B5/09 ,  G11B7/004 ,  G11B11/10508 ,  G11B11/10515 ,  G11B20/10 ,  G11B2005/0029

Abstract: A data storage system achieves improved bandwidth efficiency using a modulated recording signal, channel linearization, and a compressor circuit for compressing peak amplitude of the recording signal. In a preferred embodiment, quadrature amplitude modulation and demodulation is utilized. Another embodiment achieves improved bandwidth efficiency using a recording medium having a substantially rectangular magnetic flux versus magnetic field intensity hysteresis characteristic and a substantially rectangular Kerr rotation versus magnetic field intensity hysteresis characteristic. Yet another embodiment achieves improved bandwidth efficiency using a storage medium having a substantially abrupt flux transition.

Abstract translation: 数据存储系统使用调制的记录信号，信道线性化以及用于压缩记录信号的峰值幅度的压缩器电路来实现带宽效率的提高。 在优选实施例中，利用正交幅度调制和解调。 另一个实施例使用具有基本上矩形磁通量相对于磁场强度滞后特性和基本上矩形克尔旋转与磁场强度滞后特性的记录介质来实现改进的带宽效率。 另一个实施例使用具有基本上急剧的通量转变的存储介质来实现改进的带宽效率。

公开(公告)号：US5236060A

公开(公告)日：1993-08-17

申请号：US872290

申请日：1992-04-22

Applicant: William D. Huber

Inventor： William D. Huber

IPC: B62D61/08 ,  B62K5/04 ,  B62K13/04

CPC classification number: B62K13/00 ,  B62D61/065 ,  B62K13/04 ,  B62K5/027 ,  B62K5/05 ,  B62K5/06 ,  B62K2015/005

Abstract: The invention is a conversion kit for converting a two-wheeled motorcycle into a three-wheeled motorcycle providing for increasing both the lateral and longitudinal stability of a conventional motorcycle while maintaining the conventional positioning of the motorcycle rider. The invention replacing the front wheel with a pair of opposed wheels connected to the conventional front fork by an elongated kit frame. The kit frame is narrow and does not provide for enclosing the driver within the frame. The elongated frame provides for greater longitudinal stability and the opposed front wheels provide for greater lateral stability. The kit frame is directly mounted to the conventional motorcycle front fork, requiring limited modification to the conventional motorcycle and eliminating special connectors required by prior designs.

Abstract translation: 本发明是用于将两轮摩托车转换为三轮摩托车的转换套件，其用于增加常规摩托车的横向和纵向稳定性，同时保持摩托车骑手的常规定位。 本发明用一对相对的轮替代前轮，该对相对轮通过细长的工具框架连接到传统的前叉。 套件框架窄，不提供将驱动器包围在框架内。 细长框架提供更大的纵向稳定性，并且相对的前轮提供更大的横向稳定性。 套件框架直接安装在传统的摩托车前叉上，需要对传统摩托车进行有限的修改，并消除现有设计所需的特殊连接件。

公开(公告)号：US5107379A

公开(公告)日：1992-04-21

申请号：US541582

申请日：1990-06-21

Applicant: William D. Huber

Inventor： William D. Huber

IPC: G09G3/36 ,  G11B5/09 ,  G11B20/10 ,  G11B20/14

CPC classification number: G11B20/10046 ,  G09G3/3681 ,  G11B20/10009 ,  G11B20/1426 ,  G11B5/09

Abstract: A read channel detector circuit for recovery of digital data from a readback waveform produced by a magnetic recording head is disclosed. The detector circuit includes a forward filter for slimming the rising edge and slurring the falling edge of an isolated input magnetic pulse. Quantized feedback techniques are then used to produce a compensating waveform which is substantially complimentary to the portion of the filtered waveform occurring after T.sub.min. The complimentary waveform is then added to the forward filter output to produce a waveform which is substantially a step function. This step function corresponds to a single digital transition, either positive-going or negative-going in a digital output sequence. The equalized waveform is then limited by a comparator to produce the desired digital output sequence. By slimming only the rising edge of the input magnetic pulse and by using quantized feedback techniques, the overall bandwidth of the system is conserved resulting in an increased binary signalling capability without substantial intersymbol interference.

Abstract translation: 公开了一种用于从由磁记录头产生的回读波形恢复数字数据的读通道检测器电路。 检测器电路包括一个正向滤波器，用于减弱上升沿并使隔离的输入磁脉冲的下降沿剔除。 然后使用量化反馈技术来产生补偿波形，其基本上与在Tmin之后发生的滤波波形的部分相互补充。 随后将辅助波形添加到正向滤波器输出端，以产生基本上是阶梯函数的波形。 该步骤功能对应于数字输出序列中的单次数字转换，正向或负向。 然后，均衡波形被比较器限制以产生所需的数字输出序列。 通过仅减少输入磁脉冲的上升沿并通过使用量化反馈技术，系统的总体带宽被保守，导致增加的二进制信令能力而没有实质的符号间干扰。

公开(公告)号：US4344093A

公开(公告)日：1982-08-10

申请号：US200365

申请日：1980-10-24

Applicant: William D. Huber

Inventor： William D. Huber

IPC: G11B5/035 ,  G11B5/09 ,  G11B5/02

CPC classification number: G11B5/035

Abstract: A pulse improvement circuit for a magnetic readback system produces a data representative signal having symmetrical, equal-amplitude pulses of limited time widths. The circuit includes an equalizer made in accordance to a final transfer function produced as a result of a mathematical convolution of first and second transfer functions. The first transfer function is based on the theory of a matched filter for receiving a signal having data representative and non-white noise pulses contained therein to produce a filter signal having maximum signal to noise ratio. The second transfer function is based on the theory of a Papoulis window function for slimming the pulses contained in the filter signal. A specific circuit implementation of the final transfer function is an eight-pole, inductor-capacitor, ladder network for amplitude equalization coupled to an inductor-capacitor, lattice network including first and second order sections for phase equalization.

Abstract translation: 用于磁回读系统的脉冲改善电路产生具有有限时间宽度的对称等幅度脉冲的数据代表信号。 电路包括根据由第一和第二传递函数的数学卷积产生的最终传递函数而制成的均衡器。 第一传递函数基于匹配滤波器的理论，用于接收具有其中包含数据表示和非白噪声脉冲的信号，以产生具有最大信噪比的滤波器信号。 第二传递函数基于Papoulis窗口函数的理论，用于减少滤波器信号中包含的脉冲。 最终传递函数的具体电路实现是耦合到电感器电容器的幅度均衡的八极电感器电容器梯形网络，包括用于相位均衡的第一和第二阶段的网格网络。

公开(公告)号：US08482873B1

公开(公告)日：2013-07-09

申请号：US12032783

申请日：2008-02-18

Applicant: Jack M. Chue ,  Tomas D. Hugunin ,  William D. Huber

Inventor： Jack M. Chue ,  Tomas D. Hugunin ,  William D. Huber

IPC: G11B5/02

CPC classification number: G11B5/607 ,  G11B5/6029

Abstract: A disk drive is disclosed comprising a plurality of disk surfaces, and a plurality of heads actuated over the respective disk surfaces. In one embodiment, control circuitry generates a pulse duty cycle signal for one of the heads. In another embodiment, the control circuitry generates a first pulse width modulated signal for a first head, and a second pulse width modulated signal for a second head, wherein the second pulse width modulated signal comprises a phase offset from the first pulse width modulated signal.

Abstract translation: 公开了一种磁盘驱动器，其包括多个盘表面，以及在相应的盘表面上致动的多个磁头。 在一个实施例中，控制电路产生用于其中一个磁头的脉冲占空比信号。 在另一实施例中，控制电路产生用于第一磁头的第一脉冲宽度调制信号和用于第二磁头的第二脉冲宽度调制信号，其中第二脉冲宽度调制信号包括与第一脉冲宽度调制信号的相位偏移。