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1. 发明授权

US5798885A Head positioning control for disk apparatus using peak detection, polarity detection and sector mark detection 失效
标题翻译：使用峰值检测，极性检测和扇区标记检测的磁盘设备的磁头定位控制
公开(公告)号：US5798885A
公开(公告)日：1998-08-25
申请号：US435132
申请日：1995-05-05
申请人： Masaru Saiki , Tsutomu Sasaki , Hirokazu Ishizaki , Eiji Okamura , Tatsuya Gofuku , Norihiko Suzuki , Koichi Tohkairin , Hirofumi Suzuki , Kenji Endo , Chihiro Ono , Kazuhide Ohba , Atsushi Satoh , Eisaku Takahashi , Takashi Tokairin , Isao Suda , Takahiro Ono
发明人： Masaru Saiki , Tsutomu Sasaki , Hirokazu Ishizaki , Eiji Okamura , Tatsuya Gofuku , Norihiko Suzuki , Koichi Tohkairin , Hirofumi Suzuki , Kenji Endo , Chihiro Ono , Kazuhide Ohba , Atsushi Satoh , Eisaku Takahashi , Takashi Tokairin , Isao Suda , Takahiro Ono
IPC分类号： G11B5/00 , G11B5/012 , G11B5/40 , G11B5/48 , G11B5/55 , G11B5/596 , G11B21/08 , G11B25/04 , G11B33/00
CPC分类号： G11B25/043 , G11B21/083 , G11B33/00 , G11B5/5521 , G11B5/5534 , G11B5/596 , G11B2005/0018 , G11B5/012 , G11B5/40 , G11B5/486 , G11B5/59655
摘要： For a balance adjustment due to a reduction in size and weight of an actuator, an arm portion, an axis attaching portion, and a coil supporting portion are arranged so that the centers of gravity on the coil side are located on a straight line connecting a rotational center and the center of gravity on the head side. Further, the improvement of an assembling efficiency of a VCM, an increase in torque, a one-touch fixing of an FPC connecting band, a noise prevention of a read pattern, and an insulation between the base and cover due to a bias of an MR read head are accomplished. A sector mark is detected by comparing a peak detection pulse and its reference polarity signal. A redundancy is provided to a reference detection polarity signal so that a read signal can be detected even if any one of the read signals of the sector marks is dropped out. A gray code detecting section for recognizing a cylinder address also detects on the basis of a peak detection pulse and a polarity signal due to the reading of a gray code. A memory space to store a program is divided into an ROM space of a small electric power consumption and an RAM space of a large electric power consumption and stores each peculiar program.
摘要翻译：为了由于致动器的尺寸和重量的减小而进行的平衡调整，布置臂部，轴安装部和线圈支撑部，使得线圈侧的重心位于连接旋转中心和头部重心。此外，由于VC的偏置，VCM的组装效率的提高，转矩的增加，FPC连接带的一触式固定，读取图案的噪声防止以及基座和盖之间的绝缘 MR读头完成。通过比较峰值检测脉冲和其参考极性信号来检测扇区标记。向参考检测极性信号提供冗余，使得即使扇区标记的读取信号中的任何一个被丢弃也可以检测读取信号。用于识别气缸地址的灰度代码检测部分还根据读取灰度代码的峰值检测脉冲和极性信号进行检测。用于存储程序的存储器空间被划分为具有小功耗的ROM空间和大功率消耗的RAM空间，并且存储每个特殊程序。

2. 发明授权

US6137646A Disk apparatus using coincidence detection to generate variable sector pulses 失效
标题翻译：磁盘装置使用重合检测来产生可变扇区脉冲
公开(公告)号：US6137646A
公开(公告)日：2000-10-24
申请号：US872771
申请日：1997-06-10
申请人： Eiji Okamura , Tatsuya Gofuku , Chihiro Ono , Kazuhide Ohba , Atsushi Satoh , Eisaku Takahashi , Takashi Tokairin , Isao Suda
发明人： Eiji Okamura , Tatsuya Gofuku , Chihiro Ono , Kazuhide Ohba , Atsushi Satoh , Eisaku Takahashi , Takashi Tokairin , Isao Suda
IPC分类号： G11B5/00 , G11B5/012 , G11B5/40 , G11B5/48 , G11B5/55 , G11B5/596 , G11B21/08 , G11B25/04 , G11B33/00 , G11B5/09
CPC分类号： G11B25/043 , G11B21/083 , G11B33/00 , G11B5/5521 , G11B5/5534 , G11B5/596 , G11B2005/0018 , G11B5/012 , G11B5/40 , G11B5/486 , G11B5/59655
摘要： A disk apparatus has a disk medium with sector areas that have a servo area and a data area along the same cylinder. The servo areas also have a sector mark indicative of the servo area, a code indicative of a cylinder address, and a predetermined servo pattern to detect a head position, all magnetically recorded in the servo area. A disk control section uses a head portion to detect the head position on the basis of a read signal of the servo pattern and positions the head portion at an arbitrary cylinder to perform reading and writing operations. The disk apparatus also has a time measuring counter for starting to measure an elapsed time each time a predetermined position in the servo area is detected, and a time setting register for storing a time from a detection time point of the predetermined position in the servo area to the generation of the sector pulse. A coincidence detecting section is provided to detect that the elapsed time measured by the time measuring counter coincides with the set time of the register, while a pulse generating section is provided for generating the sector pulse when the coincidence is detected by the coincidence detecting section.
摘要翻译：磁盘装置具有具有扇区区域的磁盘介质，其具有伺服区域和沿着同一气缸的数据区域。伺服区域还具有指示伺服区域的扇区标记，指示气缸地址的代码以及检测头部位置的预定伺服模式，磁头记录在伺服区域中。磁盘控制部分使用磁头部分来根据伺服模式的读取信号来检测磁头位置，并将磁头部分定位在任意磁盘上，以进行读写操作。磁盘装置还具有时间测量计数器，用于每当检测到伺服区域中的预定位置时开始测量经过时间;以及时间设置寄存器，用于从伺服区域中的预定位置的检测时间点存储时间到扇区脉冲的产生。提供符合检测部分，用于检测由时间测量计数器测量的经过时间与寄存器的设定时间一致，同时提供脉冲发生部分，用于当由重合检测部分检测到重合时产生扇区脉冲。

3. 发明申请

US20110304357A1 DIGITAL PHASE COMPARATOR 有权
标题翻译：数字相位比较器
公开(公告)号：US20110304357A1
公开(公告)日：2011-12-15
申请号：US13203138
申请日：2010-03-05
申请人： Takashi Tokairin
发明人： Takashi Tokairin
IPC分类号： H03D13/00
CPC分类号： H03K5/26 , H03D13/006 , H03L7/091 , H03L2207/50
摘要： A digital phase comparator is provided in which first phase difference signals and second phase difference signals are used as digital phase difference information. The first phase difference signals are generated by sampling a second clock signal with a first group of clock signals having regular intervals. The second phase difference signals are generated, using a second group of clock signals and a first group of signals which are obtained by delaying a second clock signal and a first signal generated by performing a logic operation on the first phase difference signal respectively at different regular intervals, by sampling the second group of clock signals with the first group of signals.
摘要翻译：提供数字相位比较器，其中第一相位差信号和第二相位差信号用作数字相位差信息。通过用具有规则间隔的第一组时钟信号采样第二时钟信号来产生第一相位差信号。使用第二组时钟信号和第一组信号来产生第二相位差信号，所述第一组信号是通过分别以不同的规则延迟第二时钟信号和通过对第一相位差信号执行逻辑运算而产生的第一信号而获得的间隔，通过用第一组信号对第二组时钟信号进行采样。

4. 发明授权

US08988157B2 Oscillation circuit and semiconductor integrated circuit including the same 有权
标题翻译：振荡电路和半导体集成电路包括相同
公开(公告)号：US08988157B2
公开(公告)日：2015-03-24
申请号：US13525099
申请日：2012-06-15
申请人： Takashi Tokairin
发明人： Takashi Tokairin
IPC分类号： H03K3/0231 , H03K4/501 , H03L7/02 , H03K4/502 , G06F1/04 , H03L7/18
CPC分类号： H03K3/0231 , G06F1/04 , H03K4/501 , H03K4/502 , H03L7/02 , H03L7/099 , H03L7/18
摘要： An oscillation circuit includes an RS flip-flop for generating output signals based on a set signal and a reset signal, an electric-charge charge/discharge unit which has first and second capacitors and charges or discharges the first and second capacitors complementarily based on the output signals, a first comparator which compares a first voltage according to electric charge accumulated in the first capacitor and a first reference voltage and outputs the set signal, a second comparator which compares a second voltage according to electric charge accumulated in the second capacitor and the first reference voltage and outputs the reset signal, and a control unit for controlling a timing at which respective voltage levels of the first reference voltage and the first voltage match and a timing at which respective voltage levels of the first reference voltage and the second voltage match according to a frequency of the output signals.
摘要翻译：振荡电路包括用于基于设定信号和复位信号产生输出信号的RS触发器，充电充电/放电单元，其具有第一和第二电容器，并且基于所述第一和第二电容器互补地充电或放电第一和第二电容器输出信号，第一比较器，其将根据在第一电容器中累积的电荷的第一电压和第一参考电压进行比较，并输出设定信号;第二比较器，其将根据第二电容器中积累的电荷的第二电压和第一参考电压并输出复位信号;以及控制单元，用于控制第一参考电压和第一电压的各个电压电平匹配的定时以及第一参考电压和第二电压的各个电压电平匹配的定时根据输出信号的频率。

5. 发明申请

US20120098585A1 QUADRATURE MIXER 有权
标题翻译：平台混合器
公开(公告)号：US20120098585A1
公开(公告)日：2012-04-26
申请号：US13382143
申请日：2010-06-23
申请人： Masaki Kitsunezuka , Takashi Tokairin
发明人： Masaki Kitsunezuka , Takashi Tokairin
IPC分类号： G06F7/44
CPC分类号： H03D7/1441 , H03D7/1458 , H03D7/165
摘要： This invention provides an quadrature mixer which does not require a long time to adjust the amplitude value at the time of demodulation of the IQ signal. The quadrature mixer, comprising a first frequency-conversion unit that outputs a sixth signal derived by multiplying a first signal by a second and a fourth signals, a second frequency-conversion unit that outputs a seventh signal derived by multiplying the first signal by a third and a fifth signals, a first amplitude adjustment unit that outputs a eighth signal derived by multiplying the sixth signal by the third and fifth signals and a second amplitude adjustment unit that outputs a ninth signal derived by multiplying the seventh signal by the second and fifth signals.
摘要翻译：本发明提供一种正交混频器，其不需要很长时间来调整IQ信号解调时的振幅值。正交混频器，包括：第一频率转换单元，输出通过将第一信号乘以第二和第四信号而导出的第六信号;第二频率转换单元，输出通过将第一信号乘以第三信号而导出的第七信号和第五信号，第一幅度调整单元，输出通过将第六信号乘以第三和第五信号而导出的第八信号;以及第二幅度调整单元，其输出通过将第七信号乘以第二和第五信号而导出的第九信号。

6. 发明申请

US20090098833A1 OPTICAL MODULE 审中-公开
标题翻译：光学模块
公开(公告)号：US20090098833A1
公开(公告)日：2009-04-16
申请号：US12224780
申请日：2007-02-15
申请人： Takashi Tokairin , Tadashi Maeda
发明人： Takashi Tokairin , Tadashi Maeda
IPC分类号： H04B1/40
CPC分类号： H03B19/00 , H03L7/23
摘要： A first frequency generator outputs a signal at first frequency f1 which satisfies a relationship of f1>f0 with desired frequency f0. A second frequency generator outputs a signal at second frequency f2 which satisfies a relationship of f2>f0 with desired frequency f0. A frequency discriminator frequency combines the signal generated from the first frequency generator with the signal generated from the second frequency generator to generate a signal which contains a component at desired frequency f0. The frequency discriminator further passes therethrough only a frequency region lower than a predetermined threshold frequency of the generated signal.
摘要翻译：第一频率发生器以满足f1> f0的关系的期望频率f0的第一频率f1输出信号。第二频率发生器输出满足f2> f0的关系的期望频率f0的第二频率f2的信号。频率鉴频器频率将从第一频率发生器产生的信号与从第二频率发生器产生的信号相组合，以产生包含期望频率f0的分量的信号。频率鉴别器仅通过低于所产生信号的预定阈值频率的频率区域。

7. 发明授权

US08521112B2 Quadrature mixer 有权
标题翻译：正交搅拌机
公开(公告)号：US08521112B2
公开(公告)日：2013-08-27
申请号：US13382143
申请日：2010-06-23
申请人： Masaki Kitsunezuka , Takashi Tokairin
发明人： Masaki Kitsunezuka , Takashi Tokairin
IPC分类号： H04B1/16
CPC分类号： H03D7/1441 , H03D7/1458 , H03D7/165
摘要： This invention provides an quadrature mixer which does not require a long time to adjust the amplitude value at the time of demodulation of the IQ signal. The quadrature mixer, comprising a first frequency-conversion unit that outputs a sixth signal derived by multiplying a first signal by a second and a fourth signals, a second frequency-conversion unit that outputs a seventh signal derived by multiplying the first signal by a third and a fifth signals, a first amplitude adjustment unit that outputs a eighth signal derived by multiplying the sixth signal by the third and fifth signals and a second amplitude adjustment unit that outputs a ninth signal derived by multiplying the seventh signal by the second and fifth signals.
摘要翻译：本发明提供一种正交混频器，其不需要很长时间来调整IQ信号解调时的振幅值。正交混频器，包括：第一频率转换单元，输出通过将第一信号乘以第二和第四信号而导出的第六信号;第二频率转换单元，输出通过将第一信号乘以第三信号而导出的第七信号和第五信号，第一幅度调整单元，输出通过将第六信号乘以第三和第五信号而导出的第八信号;以及第二幅度调整单元，其输出通过将第七信号乘以第二和第五信号而导出的第九信号。

8. 发明授权

US08415983B2 Digital phase comparator 有权
标题翻译：数字相位比较器
公开(公告)号：US08415983B2
公开(公告)日：2013-04-09
申请号：US13203138
申请日：2010-03-05
申请人： Takashi Tokairin
发明人： Takashi Tokairin
IPC分类号： G01R25/00
CPC分类号： H03K5/26 , H03D13/006 , H03L7/091 , H03L2207/50
摘要： A digital phase comparator is provided in which first phase difference signals and second phase difference signals are used as digital phase difference information. The first phase difference signals are generated by sampling a second clock signal with a first group of clock signals having regular intervals. The second phase difference signals are generated, using a second group of clock signals and a first group of signals which are obtained by delaying a second clock signal and a first signal generated by performing a logic operation on the first phase difference signal respectively at different regular intervals, by sampling the second group of clock signals with the first group of signals.
摘要翻译：提供了数字相位比较器，其中第一相位差信号和第二相位差信号用作数字相位差信息。通过用具有规则间隔的第一组时钟信号采样第二时钟信号来产生第一相位差信号。使用第二组时钟信号和第一组信号来产生第二相位差信号，所述第一组信号是通过分别以不同的规则延迟第二时钟信号和通过对第一相位差信号执行逻辑运算而产生的第一信号而获得的间隔，通过用第一组信号对第二组时钟信号进行采样。

9. 发明授权

US07565127B2 Signal processing unit 有权
标题翻译：信号处理单元
公开(公告)号：US07565127B2
公开(公告)日：2009-07-21
申请号：US11569117
申请日：2005-04-14
申请人： Takashi Tokairin , Noriaki Matsuno
发明人： Takashi Tokairin , Noriaki Matsuno
IPC分类号： H04B1/10 , H04B1/16
CPC分类号： H04L25/061 , H03D3/008 , H04B1/30
摘要： A signal processing unit of the present invention includes: input terminal (21) to which an input signal is input; high-pass filter (23) for cutting off the DC component of the input signal; output terminal (22) for outputting a signal output from high-pass filter (23) as an output signal; determination element (26) for determining whether or not the voltage of the output signal falls out of a predetermined detection threshold range; and, switches (27,28) for connecting the output node of high-pass filter (23) to a power supply circuit when the voltage of the output signal is determined to fall out of the detection threshold range at determination element (26).
摘要翻译：本发明的信号处理单元包括：输入信号被输入的输入端子（21）; 高通滤波器（23），用于切断输入信号的直流分量; 输出端子（22），用于输出从高通滤波器（23）输出的信号作为输出信号; 确定元件（26），用于确定输出信号的电压是否脱离预定的检测阈值范围; 以及用于当确定元件（26）确定输出信号的电压落在检测阈值范围内时，用于将高通滤波器（23）的输出节点连接到电源电路的开关（27,28）。

10. 发明申请

US20080090545A1 Signal Processing Unit 有权
标题翻译：信号处理单元
公开(公告)号：US20080090545A1
公开(公告)日：2008-04-17
申请号：US11569117
申请日：2005-04-14
申请人： Takashi Tokairin , Noriaki Matsuno
发明人： Takashi Tokairin , Noriaki Matsuno
IPC分类号： H04B1/16
CPC分类号： H04L25/061 , H03D3/008 , H04B1/30
摘要： A signal processing unit of the present invention includes: input terminal (21) to which an input signal is input; high-pass filter (23) for cutting off the DC component of the input signal; output terminal (22) for outputting a signal output from high-pass filter (23) as an output signal; determination element (26) for determining whether or not the voltage of the output signal falls out of a predetermined detection threshold range; and, switches (27,28) for connecting the output node of high-pass filter (23) to a power supply circuit when the voltage of the output signal is determined to fall out of the detection threshold range at determination element (26).
摘要翻译：本发明的信号处理单元包括：输入信号被输入的输入端子（21）; 高通滤波器（23），用于切断输入信号的直流分量; 输出端子（22），用于输出从高通滤波器（23）输出的信号作为输出信号; 确定元件（26），用于确定输出信号的电压是否脱离预定的检测阈值范围; 以及用于当确定元件（26）确定输出信号的电压落在检测阈值范围内时，用于将高通滤波器（23）的输出节点连接到电源电路的开关（27,28）。

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