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1. 发明申请

US20140029138A1 STORAGE DEVICE HAVING DEGAUSS CIRCUITRY WITH RAMP GENERATOR FOR USE IN GENERATING CHIRPED DEGAUSS SIGNAL 有权
标题翻译：具有用于产生CHIREED DEGAUSS信号的RAMP发生器等离子体电路的存储装置
公开(公告)号：US20140029138A1
公开(公告)日：2014-01-30
申请号：US13556480
申请日：2012-07-24
申请人： Paul Mazur , Robert A. Norman , Jeffrey A. Gleason , Anamul Hoque
发明人： Paul Mazur , Robert A. Norman , Jeffrey A. Gleason , Anamul Hoque
IPC分类号： G11B5/465
CPC分类号： G11B5/465
摘要： A hard disk drive or other disk-based storage device comprises a storage disk, a write head configured to write data to the disk, and control circuitry coupled to the write head. The control circuitry comprises a write driver and degauss circuitry associated with the write driver. The degauss circuitry is configured to generate a chirped degauss signal to be applied to the write head by the write driver. The degauss circuitry comprises a ramp generator configured to generate a ramp signal for controlling a frequency of at least a portion of a waveform of the chirped degauss signal. The ramp signal generated by the ramp generator may comprise a current ramp that is applied to a control input of a current controlled oscillator of the degauss circuitry.
摘要翻译：硬盘驱动器或其他基于磁盘的存储设备包括存储盘，被配置为向盘写入数据的写入头以及耦合到写入头的控制电路。控制电路包括与写入驱动器相关联的写入驱动器和消磁电路。消磁电路被配置为产生由写入驱动器施加到写入头的啁啾消磁信号。消磁电路包括斜坡发生器，其被配置为产生用于控制啁啾消磁信号的波形的至少一部分的频率的斜坡信号。由斜坡发生器产生的斜坡信号可以包括施加到消磁电路的电流控制振荡器的控制输入的电流斜坡。

2. 发明授权

US08773817B2 Storage device having degauss circuitry with ramp generator for use in generating chirped degauss signal 有权
标题翻译：具有用于产生啁啾消磁信号的斜坡发生器的消磁电路的存储装置
公开(公告)号：US08773817B2
公开(公告)日：2014-07-08
申请号：US13556480
申请日：2012-07-24
申请人： Paul Mazur , Robert A. Norman , Jeffrey A. Gleason , Anamul Hoque
发明人： Paul Mazur , Robert A. Norman , Jeffrey A. Gleason , Anamul Hoque
IPC分类号： G11B5/335
CPC分类号： G11B5/465
摘要： A hard disk drive or other disk-based storage device comprises a storage disk, a write head configured to write data to the disk, and control circuitry coupled to the write head. The control circuitry comprises a write driver and degauss circuitry associated with the write driver. The degauss circuitry is configured to generate a chirped degauss signal to be applied to the write head by the write driver. The degauss circuitry comprises a ramp generator configured to generate a ramp signal for controlling a frequency of at least a portion of a waveform of the chirped degauss signal. The ramp signal generated by the ramp generator may comprise a current ramp that is applied to a control input of a current controlled oscillator of the degauss circuitry.
摘要翻译：硬盘驱动器或其他基于磁盘的存储设备包括存储盘，被配置为向盘写入数据的写入头以及耦合到写入头的控制电路。控制电路包括与写入驱动器相关联的写入驱动器和消磁电路。消磁电路被配置为产生由写入驱动器施加到写入头的啁啾消磁信号。消磁电路包括斜坡发生器，其被配置为产生用于控制啁啾消磁信号的波形的至少一部分的频率的斜坡信号。由斜坡发生器产生的斜坡信号可以包括施加到消磁电路的电流控制振荡器的控制输入的电流斜坡。

3. 发明授权

US07969677B2 Write driver monitoring and detection 有权
标题翻译：编写驱动程序监控和检测
公开(公告)号：US07969677B2
公开(公告)日：2011-06-28
申请号：US12408847
申请日：2009-03-23
申请人： Jeffrey A. Gleason , Anamul Hoque , David W. Kelly
发明人： Jeffrey A. Gleason , Anamul Hoque , David W. Kelly
IPC分类号： G11B27/36 , G11B5/02
CPC分类号： G11B27/36 , G11B2220/2516
摘要： Electronic circuitry and methods are disclosed for monitoring a portion of a write driver, for example, a steady state value of a write driver of a hard disk drive preamplifier. Based on a result of the monitoring, a condition, such as a fault, can be detected in the write driver. For example, apparatus for monitoring a write driver of a disk drive system comprises a comparator circuit coupled to an output of the write driver and configured to compare a value present at the output of the write driver with a reference value such that at least one condition associated with the write driver is detectable as a result of the comparison of the write driver output value and the reference value.
摘要翻译：公开了用于监视写入驱动器的一部分的电子电路和方法，例如硬盘驱动器前置放大器的写入驱动器的稳定状态值。基于监视的结果，可以在写入驱动器中检测到诸如故障的状况。例如，用于监视磁盘驱动器系统的写入驱动器的装置包括一个比较器电路，其耦合到该写入驱动器的一个输出并被配置为将存在于写入驱动器的输出端上的值与一个参考值进行比较，使得至少一个条件作为写入驱动器输出值和参考值的比较的结果，与写入驱动器相关联的可检测。

4. 发明申请

US20100238575A1 WRITE DRIVER MONITORING AND DETECTION 有权
标题翻译：写驱动监视和检测
公开(公告)号：US20100238575A1
公开(公告)日：2010-09-23
申请号：US12408847
申请日：2009-03-23
申请人： Jeffrey A. Gleason , Anamul Hoque , David W. Kelly
发明人： Jeffrey A. Gleason , Anamul Hoque , David W. Kelly
IPC分类号： G11B27/36
CPC分类号： G11B27/36 , G11B2220/2516
摘要： Electronic circuitry and methods are disclosed for monitoring a portion of a write driver, for example, a steady state value of a write driver of a hard disk drive preamplifier. Based on a result of the monitoring, a condition, such as a fault, can be detected in the write driver. For example, apparatus for monitoring a write driver of a disk drive system comprises a comparator circuit coupled to an output of the write driver and configured to compare a value present at the output of the write driver with a reference value such that at least one condition associated with the write driver is detectable as a result of the comparison of the write driver output value and the reference value.
摘要翻译：公开了用于监视写入驱动器的一部分的电子电路和方法，例如硬盘驱动器前置放大器的写入驱动器的稳定状态值。基于监视的结果，可以在写入驱动器中检测到诸如故障的状况。例如，用于监视磁盘驱动器系统的写入驱动器的装置包括一个比较器电路，其耦合到该写入驱动器的一个输出并被配置为将存在于写入驱动器的输出端上的值与一个参考值进行比较，使得至少一个条件作为写入驱动器输出值和参考值的比较的结果，与写入驱动器相关联的可检测。

5. 发明申请

US20100090667A1 OUTPUT COMPENSATED VOLTAGE REGULATOR, AN IC INCLUDING THE SAME AND A METHOD OF PROVIDING A REGULATED VOLTAGE 有权
标题翻译：输出补偿电压调节器，包括其的IC和提供调节电压的方法
公开(公告)号：US20100090667A1
公开(公告)日：2010-04-15
申请号：US12250427
申请日：2008-10-13
申请人： Jeffrey A. Gleason , David W. Kelly , Paul Mazur
发明人： Jeffrey A. Gleason , David W. Kelly , Paul Mazur
IPC分类号： G05F1/00
CPC分类号： G05F1/56
摘要： A voltage regulator, a method of regulating voltage and an IC including a voltage regulator. In one embodiment, the voltage regulator includes: (1) a DC precision amplifier configured to generate a DC precision signal based on a reference voltage and a regulated output of the voltage regulator and (2) a response amplifier, coupled in parallel with the DC precision amplifier, configured to generate an error signal based on the reference voltage and the regulated output, the response amplifier further configured to generate the regulated output based on a regulating signal comprised of the error signal and the DC precision signal. The DC precision amplifier may be a CMOS amplifier and the response amplifier may be a NPN amplifier.
摘要翻译：电压调节器，调节电压的方法和包括电压调节器的IC。在一个实施例中，所述电压调节器包括：（1）DC精密放大器，被配置为基于所述电压调节器的参考电压和稳压输出产生DC精度信号;以及（2）响应放大器，其与所述DC 精密放大器，被配置为基于参考电压和调节输出产生误差信号，所述响应放大器还被配置为基于由所述误差信号和所述DC精度信号组成的调节信号来产生所述调节输出。 DC精密放大器可以是CMOS放大器，并且响应放大器可以是NPN放大器。

6. 发明授权

US08699161B2 Storage device having write signal with multiple-slope data transition 有权
标题翻译：具有多斜率数据转换的写信号的存储装置
公开(公告)号：US08699161B2
公开(公告)日：2014-04-15
申请号：US13416443
申请日：2012-03-09
申请人： Boris Livshitz , Jeffrey A. Gleason , Jason S. Goldberg , Paul Mazur , Cameron C. Rabe
发明人： Boris Livshitz , Jeffrey A. Gleason , Jason S. Goldberg , Paul Mazur , Cameron C. Rabe
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B5/02
摘要： A hard disk drive or other disk-based storage device comprises a storage disk, a read/write head configured to read data from and write data to the disk, and control circuitry coupled to or otherwise associated with the read/write head. The control circuitry comprises a write driver configured to generate a write signal for data to be written to the storage disk, and a multiple-slope transition controller associated with the write driver and configured to control a data transition in the write signal such that the data transition comprises at least two different segments each having a different slope, with the transition controller comprising separate slope control mechanisms for each of the segments. By way of example, the data transition may comprise a dual-slope transition having first and second segments arranged sequentially between a start point and an end point of the data transition.
摘要翻译：硬盘驱动器或其他基于磁盘的存储设备包括存储盘，被配置为从盘读取数据并向盘写入数据的读/写头，以及耦合到读/写头的或以其他方式与读/写头相关联的控制电路。所述控制电路包括：写入驱动器，被配置为产生用于写入所述存储盘的数据的写入信号，以及与所述写入驱动器相关联并被配置为控制所述写入信号中的数据转换的多斜率转换控制器，过渡包括至少两个不同的段，每个具有不同的斜率，转移控制器包括用于每个段的单独的斜率控制机构。作为示例，数据转换可以包括具有在数据转换的开始点和终点之间顺序布置的第一和第二段的双斜率转换。

7. 发明授权

US07990219B2 Output compensated voltage regulator, an IC including the same and a method of providing a regulated voltage 有权
标题翻译：输出补偿电压调节器，包括其的IC和提供调节电压的方法
公开(公告)号：US07990219B2
公开(公告)日：2011-08-02
申请号：US12250427
申请日：2008-10-13
申请人： Jeffrey A. Gleason , David W. Kelly , Paul Mazur
发明人： Jeffrey A. Gleason , David W. Kelly , Paul Mazur
IPC分类号： H92M3/04
CPC分类号： G05F1/56
摘要： A voltage regulator, a method of regulating voltage and an IC including a voltage regulator. In one embodiment, the voltage regulator includes: (1) a DC precision amplifier configured to generate a DC precision signal based on a reference voltage and a regulated output of the voltage regulator and (2) a response amplifier, coupled in parallel with the DC precision amplifier, configured to generate an error signal based on the reference voltage and the regulated output, the response amplifier further configured to generate the regulated output based on a regulating signal comprised of the error signal and the DC precision signal. The DC precision amplifier may be a CMOS amplifier and the response amplifier may be a NPN amplifier.
摘要翻译：电压调节器，调节电压的方法和包括电压调节器的IC。在一个实施例中，所述电压调节器包括：（1）DC精密放大器，被配置为基于所述电压调节器的参考电压和稳压输出产生DC精度信号;以及（2）响应放大器，其与所述DC 精密放大器，被配置为基于参考电压和调节输出产生误差信号，所述响应放大器还被配置为基于由所述误差信号和所述DC精度信号组成的调节信号来产生所述调节输出。 DC精密放大器可以是CMOS放大器，并且响应放大器可以是NPN放大器。

8. 发明申请

US20130235485A1 STORAGE DEVICE HAVING WRITE SIGNAL WITH MULTIPLE-SLOPE DATA TRANSITION 有权
标题翻译：具有多路数据转换功能的写入信号的存储设备
公开(公告)号：US20130235485A1
公开(公告)日：2013-09-12
申请号：US13416443
申请日：2012-03-09
申请人： Boris Livshitz , Jeffrey A. Gleason , Jason S. Goldberg , Paul Mazur , Cameron C. Rabe
发明人： Boris Livshitz , Jeffrey A. Gleason , Jason S. Goldberg , Paul Mazur , Cameron C. Rabe
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B5/02
摘要： A hard disk drive or other disk-based storage device comprises a storage disk, a read/write head configured to read data from and write data to the disk, and control circuitry coupled to or otherwise associated with the read/write head. The control circuitry comprises a write driver configured to generate a write signal for data to be written to the storage disk, and a multiple-slope transition controller associated with the write driver and configured to control a data transition in the write signal such that the data transition comprises at least two different segments each having a different slope, with the transition controller comprising separate slope control mechanisms for each of the segments. By way of example, the data transition may comprise a dual-slope transition having first and second segments arranged sequentially between a start point and an end point of the data transition.
摘要翻译：硬盘驱动器或其他基于磁盘的存储设备包括存储盘，被配置为从盘读取数据并向盘写入数据的读/写头，以及耦合到读/写头的或以其他方式与读/写头相关联的控制电路。所述控制电路包括：写入驱动器，被配置为产生用于写入所述存储盘的数据的写入信号，以及与所述写入驱动器相关联并被配置为控制所述写入信号中的数据转换的多斜率转换控制器，过渡包括至少两个不同的段，每个具有不同的斜率，转移控制器包括用于每个段的单独的斜率控制机构。作为示例，数据转换可以包括具有在数据转换的开始点和终点之间顺序布置的第一和第二段的双斜率转换。

9. 发明授权

US5278700A Differentiating amplifier responsive to track locations and variations of element values from desired values 失效
标题翻译：微分放大器响应于轨迹位置和元件值与期望值的变化
公开(公告)号：US5278700A
公开(公告)日：1994-01-11
申请号：US015766
申请日：1993-01-19
申请人： David E. Sutliff , Jeffrey A. Gleason
发明人： David E. Sutliff , Jeffrey A. Gleason
IPC分类号： G11B5/012 , G11B20/10 , G11B20/12 , H03F3/45 , H03G3/30 , H03G5/16 , G11B5/09 , G11B5/02 , G11B5/035
CPC分类号： H03F3/45479 , G11B20/10009 , G11B5/012 , H03F3/45103 , H03G3/30 , H03G5/16 , G11B20/1258 , H03F2203/45302 , H03F2203/45311 , H03F2203/45388 , H03F2203/45458 , H03F2203/45466 , H03F2203/45496
摘要： An amplifier is compensated for variations in element values. A trim signal is generated based on element values of filter elements of a filter in the amplifier. An RC product in the amplifier is controlled based on the trim signal. The RC product corresponds to a product of a dynamic resistance value of a dynamic resistance element in the filter in the amplifier, and a capacitance value of capacitive elements in the filter. The RC product also determines a pole position of the amplifier. Gain in the amplifier is controlled based on the trim signal so that a desired gain is maintained.
摘要翻译：放大器补偿元件值的变化。基于放大器中的滤波器的滤波器元件的元素值产生微调信号。基于调整信号控制放大器中的RC产品。 RC乘积对应于放大器中的滤波器中的动态电阻元件的动态电阻值与滤波器中的电容元件的电容值的乘积。 RC产品还决定放大器的极点位置。基于微调信号来控制放大器中的增益，从而保持期望的增益。

10. 发明授权

US07692887B2 Method and apparatus for measuring resistance of a resistive sensor 有权
标题翻译：用于测量电阻式传感器电阻的方法和装置
公开(公告)号：US07692887B2
公开(公告)日：2010-04-06
申请号：US11520493
申请日：2006-09-13
申请人： Daniel J. Dolan, Jr. , Hao Fang , Jeffrey A. Gleason , Ross S. Wilson
发明人： Daniel J. Dolan, Jr. , Hao Fang , Jeffrey A. Gleason , Ross S. Wilson
IPC分类号： G11B27/36
CPC分类号： G11B5/455 , G11B2005/0016
摘要： An apparatus and method for determining a head parameter value (e.g., head resistance) of a resistive head. A test head current is supplied to the head during a head parameter measurement interval using the same current sources that supply a bias current to the head during an operating (read operation) interval. The determined head parameter value is latched for use in setting the control loop gain for a control loop that controls the current sources during the operating interval.
摘要翻译：一种用于确定电阻头的头部参数值（例如，头部电阻）的装置和方法。在头部参数测量间隔期间，使用在操作（读取操作）间隔期间向头部提供偏置电流的相同电流源向头部提供测试头电流。确定的头参数值被锁存用于设置在操作间隔期间控制电流源的控制回路的控制回路增益。

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