公开(公告)号：US07702252B2

公开(公告)日：2010-04-20

申请号：US11822059

申请日：2007-07-02

申请人： Yasuhiro Maehata ,  Kazuki Suzuki ,  Takayuki Niihara ,  Makoto Kikura ,  Tetsuji Nishikawa ,  Masahiro Ishida

发明人： Yasuhiro Maehata ,  Kazuki Suzuki ,  Takayuki Niihara ,  Makoto Kikura ,  Tetsuji Nishikawa ,  Masahiro Ishida

IPC分类号： G03G15/00

CPC分类号： G03G15/757 ,  F16C13/02 ,  F16D1/104 ,  G03G2221/1657 ,  Y10T403/68 ,  Y10T403/7088

摘要： A connector connects a rotatable body including an attachment hole and an engaging groove, and a shaft pressed into the attachment hole to integrally rotate. The connector includes at least one pin configured to fit in the engaging groove; and a screw having a head configured to be pressed against the rotatable body either directly or via another member. The at least one pin is fixed on the shaft and extends in a radial direction of the shaft to penetrate the shaft. The screw is screwed into a screw hole on an end face of the shaft and is tightened to press the at least one pin against a surface of the engaging groove.

摘要翻译： 连接器将包括附接孔和接合槽的可旋转主体和被压入安装孔中的轴一体地旋转连接。 所述连接器包括构造成装配在所述接合槽中的至少一个销; 以及螺钉，其具有构造成直接地或经由另一构件压靠在可旋转体上的头部。 所述至少一个销固定在所述轴上并且在所述轴的径向方向上延伸以穿透所述轴。 将螺钉拧入轴的端面上的螺纹孔中并拧紧以将至少一个销压在接合槽的表面上。

公开(公告)号：US20100080274A1

公开(公告)日：2010-04-01

申请号：US12414618

申请日：2009-03-30

申请人： Masahiro Ishida

发明人： Masahiro Ishida

IPC分类号： H04B17/00

CPC分类号： G01R31/31709

摘要： Provided is a jitter measurement apparatus that measures timing jitter of a signal under measurement having a prescribed repeating pattern, comprising a sampling section that coherently samples the signal under measurement within a prescribed measurement duration; a waveform reconfiguring section that rearranges ordinal ranks of data values sampled by the sampling section to generate a reconfigured waveform that is a reproduction of a waveform of the signal under measurement; an analytic signal generating section that converts the reconfigured waveform into a complex analytic signal; and a jitter measuring section that measures jitter of the signal under measurement based on the analytic signal.

摘要翻译： 提供了一种抖动测量装置，其测量具有规定的重复图案的测量信号的定时抖动，包括：在规定的测量持续时间内相干采样测量信号的采样部分; 波形重新配置部分，重新​​排列由采样部分采样的数据值的等级，以产生作为测量信号的波形的再现的重新配置的波形; 分析信号生成部，其将重新配置的波形转换为复数分析信号; 以及基于分析信号测量被测信号的抖动的抖动测量部。

公开(公告)号：US07684944B2

公开(公告)日：2010-03-23

申请号：US11582143

申请日：2006-10-17

申请人： Masahiro Ishida ,  Toshiyuki Okayasu

发明人： Masahiro Ishida ,  Toshiyuki Okayasu

IPC分类号： G06F19/00

CPC分类号： G01R35/00 ,  G01R31/31709

摘要： There is provided a calibration apparatus that calibrates a jitter measuring circuit for outputting a jitter measuring signal with a level according to an amount of jitter in an input signal based on the input signal and a delay signal obtained by delaying the input signal by means of a variable delay circuit. The calibration apparatus includes a delay control section that sequentially sets a first delay amount and a second delay amount in the variable delay circuit and a gain computing section that computes gain in the jitter measuring circuit based on the jitter measuring signal respectively output from the jitter measuring circuit for the first delay amount and the second delay amount.

摘要翻译： 提供一种校准装置，其校准抖动测量电路，用于基于输入信号输出具有根据输入信号中的抖动量的电平的抖动测量信号，以及通过延迟输入信号获得的延迟信号 可变延迟电路。 校准装置包括延迟控制部分，其顺序地设置可变延迟电路中的第一延迟量和第二延迟量;以及增益计算部分，其基于从抖动测量分别输出的抖动测量信号来计算抖动测量电路中的增益 电路，用于第一延迟量和第二延迟量。

公开(公告)号：US07636387B2

公开(公告)日：2009-12-22

申请号：US10776926

申请日：2004-02-11

申请人： Takahiro Yamaguchi ,  Masahiro Ishida ,  Mani Soma ,  Hirobumi Musha

发明人： Takahiro Yamaguchi ,  Masahiro Ishida ,  Mani Soma ,  Hirobumi Musha

IPC分类号： H04B3/46

CPC分类号： G01R31/3171 ,  G01R29/26 ,  G01R31/31709 ,  G01R31/31725 ,  G01R31/31922 ,  G01R31/31937 ,  H04L1/205

摘要： A measuring apparatus including a timing jitter estimator which estimates an output timing jitter sequence which indicates the output timing jitter of an output signal based on an output signal output from a DUT in response to an input signal input to the DUT, and a jitter transfer function estimator which estimates a jitter transfer function in the DUT based on the output timing jitter sequence. The jitter transfer function estimator includes an instantaneous phase noise estimator which estimates an instant phase noise of the output signal based on an output signal, and a resampler which generates the output timing jitter sequence by resampling the instantaneous phase noise at predetermined timing.

摘要翻译： 一种测量装置，包括定时抖动估计器，其响应于输入到DUT的输入信号，估计基于从DUT输出的输出信号来输出输出信号的输出定时抖动的输出定时抖动序列，以及抖动传递函数 估计器，其基于输出定时抖动序列来估计DUT中的抖动传递函数。 抖动传递函数估计器包括：基于输出信号估计输出信号的瞬时相位噪声的瞬时相位噪声估计器;以及通过在预定定时重采样瞬时相位噪声来产生输出定时抖动序列的重采样器。

公开(公告)号：US07596173B2

公开(公告)日：2009-09-29

申请号：US11260665

申请日：2005-10-28

申请人： Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

发明人： Masahiro Ishida ,  Takahiro Yamaguchi ,  Mani Soma

IPC分类号： H04B3/46

CPC分类号： H03K5/13 ,  G01R31/31709 ,  H03L7/0812 ,  H03L7/0891 ,  H03L7/0995 ,  H03L7/16

摘要： There is provided a clock generator for generating a single-phase clock into which jitter has been injected, having a multi-phase clock generating section for generating a plurality of clock signals having an almost equal phase difference from each other and a jitter injecting section for injecting jitter into the respective clock signals.

摘要翻译： 提供了一种时钟发生器，用于产生已经注入了抖动的单相时钟，具有用于产生彼此具有几乎相等的相位差的多个时钟信号的多相时钟产生部分，以及用于 将抖动注入相应的时钟信号。

公开(公告)号：US07541815B2

公开(公告)日：2009-06-02

申请号：US11371939

申请日：2006-03-10

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida ,  Takahiro Yamaguchi

IPC分类号： G01R31/02

CPC分类号： G01R31/3191 ,  G01R31/31926 ,  G01R31/31928

摘要： A testing apparatus tests the performance of an electronic device having an operation circuit for providing a useful output signal. A demodulator configured to provide a phase or frequency demodulated signal related to the output of the operation circuit is packaged with the operation circuit. The gain of the demodulator is controllable from outside the package. The testing apparatus analyses the demodulated signal and controls the gain of the demodulator.

摘要翻译： 测试装置测试具有用于提供有用输出信号的操作电路的电子设备的性能。 配置成提供与操作电路的输出相关的相位或频率解调信号的解调器与操作电路封装。 解调器的增益可从封装外部控制。 测试装置分析解调信号并控制解调器的增益。

公开(公告)号：US20090134428A1

公开(公告)日：2009-05-28

申请号：US12265161

申请日：2008-11-05

申请人： Masahiro Ishida

发明人： Masahiro Ishida

IPC分类号： H01L33/00 ,  H01L21/20

CPC分类号： H01S5/22 ,  B82Y20/00 ,  H01L33/44 ,  H01S5/028 ,  H01S5/162 ,  H01S5/2004 ,  H01S5/2201 ,  H01S5/2214 ,  H01S5/305 ,  H01S5/3063 ,  H01S5/3213 ,  H01S5/34333

摘要： A nitride semiconductor device includes: a semiconductor substrate; a p-type semiconductor layer formed over the semiconductor substrate, made of a nitride semiconductor, and containing first impurities; and an insulating film contacting the p-type semiconductor layer and having an impurity region containing second impurities for trapping hydrogen. Since residual hydrogen in the p-type semiconductor layer is trapped in the impurity region, the hydrogen concentration in the impurity region is higher than that in the insulating film excluding the impurity region.

摘要翻译： 氮化物半导体器件包括：半导体衬底; 形成在半导体衬底上的由氮化物半导体制成并包含第一杂质的p型半导体层; 以及与p型半导体层接触并具有含有用于捕获氢的第二杂质的杂质区域的绝缘膜。 由于p型半导体层中的残留氢被捕获在杂质区域中，杂质区域中的氢浓度高于除了杂质区域之外的绝缘膜中的氢浓度。

公开(公告)号：US07466140B2

公开(公告)日：2008-12-16

申请号：US11616009

申请日：2006-12-25

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida

IPC分类号： G01R31/08

CPC分类号： H03K7/02 ,  G01R31/2841 ,  G01R31/31709 ,  H03K5/156

摘要： There is provided a signal generation circuit for generating an output signal including jitter injected thereto. The signal generation circuit includes a jitter output section that outputs a first jitter signal and a second jitter signal which have different frequencies from each other, a carrier output section that outputs a carrier signal having a frequency positioned in substantially the middle between the frequencies of the first and second jitter signals, and an adding section that adds together the first jitter signal, second jitter signal and carrier signal so as to generate the output signal.

摘要翻译： 提供了一种产生包括注入抖动的抖动的输出信号的信号产生电路。 信号发生电路包括抖动输出部，其输出彼此具有不同频率的第一抖动信号和第二抖动信号;载波输出部，输出具有位于 第一和第二抖动信号，以及相加部分，其将第一抖动信号，第二抖动信号和载波信号相加，以产生输出信号。

公开(公告)号：US07398169B2

公开(公告)日：2008-07-08

申请号：US11362536

申请日：2006-02-27

申请人： Takahiro Yamaguchi ,  Satoshi Iwamoto ,  Masakatsu Suda ,  Masahiro Ishida

发明人： Takahiro Yamaguchi ,  Satoshi Iwamoto ,  Masakatsu Suda ,  Masahiro Ishida

IPC分类号： G06F19/00

CPC分类号： G01R31/31709

摘要： There is provided a measuring apparatus for measuring a signal-under-test, having a comparator for sequentially comparing voltage values of the signal-under-test with a reference voltage value fed thereto at timing of strobe signals sequentially fed thereto, a strobe timing generator for sequentially generating the strobe signals placed almost at equal time intervals, a capture memory for storing the comparison result of the comparator and a digital signal processing section for calculating jitter of the signal-under-test based on the comparison result stored in the capture memory.

摘要翻译： 提供了一种用于测量被测信号的测量装置，具有一个比较器，用于在顺序地馈送到其中的选通信号的定时顺序地比较被测信号的电压值与馈送给它的基准电压值，选通定时发生器 用于顺序地产生几乎以相等的时间间隔放置的选通信号，用于存储比较器的比较结果的捕获存储器和用于基于存储在捕获存储器中的比较结果来计算待测信号的抖动的数字信号处理部分 。

公开(公告)号：US20080150603A1

公开(公告)日：2008-06-26

申请号：US11616009

申请日：2006-12-25

申请人： Kiyotaka Ichiyama ,  Masahiro Ishida

发明人： Kiyotaka Ichiyama ,  Masahiro Ishida

IPC分类号： H03H11/26

CPC分类号： H03K7/02 ,  G01R31/2841 ,  G01R31/31709 ,  H03K5/156

摘要： There is provided a signal generation circuit for generating an output signal including jitter injected thereto. The signal generation circuit includes a jitter output section that outputs a first jitter signal and a second jitter signal which have different frequencies from each other, a carrier output section that outputs a carrier signal having a frequency positioned in substantially the middle between the frequencies of the first and second jitter signals, and an adding section that adds together the first jitter signal, second jitter signal and carrier signal so as to generate the output signal.

摘要翻译： 提供了一种产生包括注入抖动的抖动的输出信号的信号产生电路。 信号发生电路包括抖动输出部，其输出彼此具有不同频率的第一抖动信号和第二抖动信号;载波输出部，输出具有位于 第一和第二抖动信号，以及相加部分，其将第一抖动信号，第二抖动信号和载波信号相加，以产生输出信号。