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1.发明授权公开(公告)号：US07276900B2
公开(公告)日：2007-10-02
申请号：US11272861
申请日：2005-11-15
IPC分类号： G01R33/12
CPC分类号： G11B5/455 , G11B5/4555 , G11B20/1816 , G11B27/36 , G11B2005/001 , G11B2005/0013
摘要： A magnetic characteristic inspecting apparatus including a plurality of disk rotating devices or a plurality of magnetic heads include a unit for switching output signals of write signal production units or allocating the output signals to the magnetic heads, a unit for switching signals read from the magnetic heads or allocating the read signals to measurement resources, and a unit for selecting any of the disk rotating devices synchronously with which the measurement resources will perform measurement. The write signal production units and measurement resources are shared among inspections of the plurality of disk rotating devices or the plurality of heads.
摘要翻译： 包括多个盘旋转装置或多个磁头的磁特性检查装置包括用于切换写入信号产生单元的输出信号或将输出信号分配给磁头的单元，用于切换从磁头读取的信号的单元 或将读取信号分配给测量资源，以及用于选择与测量资源将执行测量同步的任何盘旋转设备的单元。 写入信号生成单元和测量资源在多个盘旋转装置或多个头的检查之间共享。
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2.发明申请公开(公告)号：US20060132122A1
公开(公告)日：2006-06-22
申请号：US11272861
申请日：2005-11-15
IPC分类号： G01R33/12
CPC分类号： G11B5/455 , G11B5/4555 , G11B20/1816 , G11B27/36 , G11B2005/001 , G11B2005/0013
摘要： A magnetic characteristic inspecting apparatus including a plurality of disk rotating devices or a plurality of magnetic heads include a unit for switching output signals of write signal production units or allocating the output signals to the magnetic heads, a unit for switching signals read from the magnetic heads or allocating the read signals to measurement resources, and a unit for selecting any of the disk rotating devices synchronously with which the measurement resources will perform measurement. The write signal production units and measurement resources are shared among inspections of the plurality of disk rotating devices or the plurality of heads.
摘要翻译： 包括多个盘旋转装置或多个磁头的磁特性检查装置包括用于切换写入信号产生单元的输出信号或将输出信号分配给磁头的单元，用于切换从磁头读取的信号的单元 或将读取信号分配给测量资源，以及用于选择与测量资源将执行测量同步的任何盘旋转设备的单元。 写入信号生成单元和测量资源在多个盘旋转装置或多个头的检查之间共享。
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3.发明授权公开(公告)号：US07817362B2
公开(公告)日：2010-10-19
申请号：US10347387
申请日：2003-01-21
申请人： Masayoshi Takahashi , Ritsuro Orihashi , Wen Li , Shinji Homma
发明人： Masayoshi Takahashi , Ritsuro Orihashi , Wen Li , Shinji Homma
IPC分类号： G11B27/36
CPC分类号： G11B27/36 , G11B2220/2516
摘要： An inspection apparatus and method are disclosed for inspecting a magnetic disk or a magnetic head. A first reference signal generating source generates reference signals of a controllable oscillating frequency, and a signal switching means selects either a reference signal or test data reproduced by the magnetic head. Factors such as offsets and gain differentials among signal distribution paths, phase shifts of sampling clocks supplied to a plurality of AID converters, and frequency-dependence of the transfer function and phase response of signal paths are identified so that errors due to these factors can be detected. Based on the detected values of these factors and errors, reference signals are utilized to compensate test data errors.
摘要翻译： 公开了一种用于检查磁盘或磁头的检查装置和方法。 第一参考信号发生源产生可控振荡频率的参考信号，并且信号切换装置选择由磁头再现的参考信号或测试数据。 识别诸如信号分配路径中的偏移和增益差异，提供给多个AID转换器的采样时钟的相移以及信号路径的传递函数和相位响应的频率依赖性等因素，使得由于这些因素导致的误差可以是 检测到。 基于这些因素和误差的检测值，使用参考信号来补偿测试数据错误。
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4.发明授权公开(公告)号：US06700369B1
公开(公告)日：2004-03-02
申请号：US09722298
申请日：2000-11-28
申请人： Masami Makuuchi , Ritsurou Orihashi , Norio Chujo , Masayoshi Takahashi , Yoshihiko Hayashi , Shinji Homma
发明人： Masami Makuuchi , Ritsurou Orihashi , Norio Chujo , Masayoshi Takahashi , Yoshihiko Hayashi , Shinji Homma
IPC分类号： G01R3312
CPC分类号： G01R33/1207 , G11B5/00 , G11B5/012 , G11B5/455 , G11B20/10009 , G11B27/36 , G11B2005/001 , G11B2220/20
摘要： A testing apparatus of a magnetic recording medium for conducting a test on the magnetic recording medium by using reproduced data obtained through reproduction of the magnetic medium, including a plurality of conversion means for converting the reproduced data into digital data, holding means for holding the digital data converted by the plurality of conversion means, data processing means for performing a calculation process on the digital data held by the holding means in relation to a magnetic characteristic of the magnetic recording medium, and analysis processing means for performing an analysis to determine whether or not information obtained by the data processing means satisfies a certain condition.
摘要翻译： 一种用于通过使用通过再现磁介质获得的再现数据在磁记录介质上进行测试的磁记录介质的测试装置，包括用于将再现数据转换为数字数据的多个转换装置，用于保持数字 由多个转换装置转换的数据，用于对由保持装置保持的数字数据相对于磁记录介质的磁特性执行计算处理的数据处理装置;以及分析处理装置，用于执行分析以确定是否或 不是由数据处理装置获得的信息不满足一定条件。
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5.发明授权公开(公告)号：US08000047B2
公开(公告)日：2011-08-16
申请号：US12503901
申请日：2009-07-16
CPC分类号： G11B20/1816 , G11B5/455 , G11B5/4555 , G11B2020/1281 , G11B2220/2516
摘要： The present invention provides a technique for converting burst data to digital data, applying FFT operation to 2n (n is an integer) pieces of digital data in response to any start signal synchronized with a sector signal, applying a window function centered around data corresponding to a frequency of a burst data signal component before the FFT operation, and performing head positioning based on a result as the detected value of the burst data.
摘要翻译： 本发明提供了一种用于将突发数据转换为数字数据的技术，响应于与扇区信号同步的任何起始信号将FFT运算应用于2n（n为整数）数字数据，应用以对应于 在FFT操作之前的突发数据信号分量的频率，并且基于结果执行头位置定位作为突发数据的检测值。
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6.发明授权公开(公告)号：US06894489B2
公开(公告)日：2005-05-17
申请号：US10735909
申请日：2003-12-16
申请人： Masami Makuuchi , Ritsurou Orihashi , Norio Chujo , Masayoshi Takahashi , Yoshihiko Hayashi , Shinji Homma
发明人： Masami Makuuchi , Ritsurou Orihashi , Norio Chujo , Masayoshi Takahashi , Yoshihiko Hayashi , Shinji Homma
CPC分类号： G01R33/1207 , G11B5/00 , G11B5/012 , G11B5/455 , G11B20/10009 , G11B27/36 , G11B2005/001 , G11B2220/20
摘要： A testing apparatus of a magnetic recording medium for conducting a test on the magnetic recording medium by using reproduced data obtained through reproduction of the magnetic medium, including a plurality of conversion means for converting the reproduced data into digital data, holding means for holding the digital data converted by the plurality of conversion means, data processing means for performing a calculation process on the digital data held by the holding means in relation to a magnetic characteristic of the magnetic recording medium, and analysis processing means for performing an analysis to determine whether or not information obtained by the data processing means satisfies a certain condition.
摘要翻译： 一种用于通过使用通过再现磁介质获得的再现数据在磁记录介质上进行测试的磁记录介质的测试装置，包括用于将再现数据转换为数字数据的多个转换装置，用于保持数字 由多个转换装置转换的数据，用于对由保持装置保持的数字数据相对于磁记录介质的磁特性执行计算处理的数据处理装置;以及分析处理装置，用于执行分析以确定是否或 不是由数据处理装置获得的信息不满足一定条件。
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公开(公告)号：US20120075021A1
公开(公告)日：2012-03-29
申请号：US12892988
申请日：2010-09-29
IPC分类号： H03F1/00
CPC分类号： H03F1/08 , H03F3/45098 , H03F2200/213 , H03F2200/261 , H03F2200/411 , H03F2203/45458
摘要： A circuit having a sensor with a stray capacitance value. An output from the sensor is connected to the input of an amplifier while a negative capacitance circuit is electrically connected in parallel with the sensor output. The negative capacitance circuit reduces the effect of the sensor stray capacitance to provide an increased bandwidth and decreased noise on the amplifier output.
摘要翻译： 具有具有杂散电容值的传感器的电路。 传感器的输出连接到放大器的输入端，而负电容电路与传感器输出端并联电连接。 负电容电路降低了传感器杂散电容的影响，从而提高了放大器输出端的带宽和降低的噪声。
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8.发明授权公开(公告)号：US08000045B2
公开(公告)日：2011-08-16
申请号：US12500765
申请日：2009-07-10
CPC分类号： G11B5/455 , G11B5/4555 , G11B5/84 , G11B19/048 , G11B20/14 , G11B20/1816 , G11B20/182 , G11B2020/1281 , G11B2020/1484 , G11B2220/2516
摘要： The present invention is designed to support plural servo patterns by setting a portion of the information of the servo pattern as a detection pattern, comparing the demodulated pattern of the portion of the information with the detection pattern, and controlling an operation timing of a test according to a result of the comparison.
摘要翻译： 本发明被设计为通过将伺服模式的信息的一部分设置为检测模式来支持多个伺服模式，将信息的部分的解调模式与检测模式进行比较，并且根据检测模式控制测试的操作定时 比较的结果。
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公开(公告)号：US08035071B2
公开(公告)日：2011-10-11
申请号：US12116241
申请日：2008-05-07
申请人： Masami Makuuchi , Ritsurou Orihashi , Masayoshi Takahashi , Wen Li , Kengo Imagawa , Takahiro Jingu
发明人： Masami Makuuchi , Ritsurou Orihashi , Masayoshi Takahashi , Wen Li , Kengo Imagawa , Takahiro Jingu
IPC分类号： G01N21/88
CPC分类号： G01N21/9501 , G01N21/94 , G01N2201/1241
摘要： The detection part has: a subtraction module for calculating correction data from data of detection systems when a reference-voltage generation module applies a reference voltage to the detection systems; a data-holding module for holding the correction data; an addition module for making a correction of detection data; a comparison module for comparing the detection data with switching data; and a selector for switching data of the detection systems including data subjected to the correction according to the output of the comparison module.
摘要翻译： 检测部具有：减法模块，用于当参考电压产生模块向检测系统施加参考电压时，从检测系统的数据计算校正数据; 用于保持校正数据的数据保持模块; 用于对检测数据进行校正的加法模块; 比较模块，用于将检测数据与切换数据进行比较; 以及选择器，用于根据比较模块的输出来切换包括经过校正的数据的检测系统的数据。
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10.发明申请公开(公告)号：US20100067135A1
公开(公告)日：2010-03-18
申请号：US12500765
申请日：2009-07-10
IPC分类号： G11B27/36
CPC分类号： G11B5/455 , G11B5/4555 , G11B5/84 , G11B19/048 , G11B20/14 , G11B20/1816 , G11B20/182 , G11B2020/1281 , G11B2020/1484 , G11B2220/2516
摘要： The present invention is designed to support plural servo patterns by setting a portion of the information of the servo pattern as a detection pattern, comparing the demodulated pattern of the portion of the information with the detection pattern, and controlling an operation timing of a test according to a result of the comparison.
摘要翻译： 本发明被设计为通过将伺服模式的信息的一部分设置为检测模式来支持多个伺服模式，将信息的部分的解调模式与检测模式进行比较，并且根据检测模式控制测试的操作定时 比较的结果。
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