会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 11. 发明授权
    • Oscillation detecting apparatus and test apparatus
    • 振荡检测装置及试验装置
    • US07034562B2
    • 2006-04-25
    • US10848895
    • 2004-05-19
    • Hiroki Kimura
    • Hiroki Kimura
    • G01R31/26H03K5/22
    • G01R19/0007G01R19/1658
    • An oscillation detecting apparatus for detecting oscillation of a signal includes a high pass filter for generating an alternating current signal from which a direct current component of the signal is removed, a slicing circuit for generating a limit signal which results from restricting an amplitude level of the alternating current signal to a level lower than a predetermined level, an integration circuit for integrating a waveform of the limit signal during a predetermined period, and a comparator for detecting whether or not the signal oscillates based on a value of the waveform integrated by the integration circuit.
    • 用于检测信号的振荡的振荡检测装置包括:高通滤波器,用于产生消除信号的直流分量的交流信号;产生限制信号的限幅电路,限制信号由限制信号的幅度电平 将交流信号提供到低于预定电平的电平;积分电路,用于在预定时间段期间积分限制信号的波形;以及比较器,用于根据由积分积分的波形的值来检测信号是否振荡 电路。
    • 12. 发明授权
    • Calibration circuit for calibrating frequency characteristics of an
AC/DC converter
    • 用于校准AC / DC转换器频率特性的校准电路
    • US5933013A
    • 1999-08-03
    • US752320
    • 1996-11-19
    • Hiroki Kimura
    • Hiroki Kimura
    • G01R19/25G01R35/00G01R19/22
    • G01R19/2506G01R19/25G01R35/005
    • A calibration circuit of an AC/DC converter which measures an AC voltage by converting the AC voltage to a DC voltage. The AC/DC converter measures the AC voltage with high accuracy with low cost by having a calibration circuit to correct the frequency response characteristic involved in an AC/DC conversion process. The AC/DC converter includes a signal generator for generating at least two calibration signals having the same energy level and different frequency spectrums, a switch for selecting the input signal to be measured or one of the calibration signals from the signal generator, an amplifier for amplifying the selected signal from the switch wherein the amplifier has a circuit arrangement for adjusting a frequency characteristic thereof, and an AC/DC conversion circuit for converting an AC voltage from the amplifier to a corresponding DC voltage.
    • AC / DC转换器的校准电路,其通过将AC电压转换为DC电压来测量AC电压。 AC / DC转换器通过校准电路来校正AC / DC转换过程中涉及的频率响应特性,以低成本高精度测量交流电压。 AC / DC转换器包括用于产生具有相同能级和不同频谱的至少两个校准信号的信号发生器,用于选择待测量的输入信号的开关或来自信号发生器的校准信号之一, 从开关放大所选择的信号,其中放大器具有用于调整其频率特性的电路装置,以及用于将来自放大器的AC电压转换为相应的DC电压的AC / DC转换电路。
    • 13. 发明授权
    • Switch circuit, filter circuit and test apparatus
    • 开关电路,滤波电路及测试仪器
    • US08232808B2
    • 2012-07-31
    • US12207506
    • 2008-09-10
    • Hiroki KimuraChisato Maeda
    • Hiroki KimuraChisato Maeda
    • G01R31/02
    • G01R31/31924H03K17/56H03K17/693
    • There is provided a switch circuit for switching whether to output an input signal, including: a transmission path that transmits the input signal from an input end to an output end of the switch circuit; a first semiconductor switch that is provided on the transmission path and switches whether to transmit the input signal; a second semiconductor switch that is opened when the first semiconductor switch is short-circuited, and that is short-circuited when the first semiconductor switch is opened, thereby grounding, to a ground potential, a high-frequency signal leaked to the transmission path between the first semiconductor switch and the output end; and a voltage controller that causes a potential difference on both ends of the second semiconductor switch when the second semiconductor switch is opened.
    • 提供了一种用于切换是否输出输入信号的开关电路,包括:将输入信号从输入端传输到开关电路的输出端的传输路径; 第一半导体开关,其设置在所述传输路径上并切换是否传送所述输入信号; 第二半导体开关,其在第一半导体开关短路时断开,并且当第一半导体开关断开时短路,从而将泄漏到接地电位的高频信号接地,泄漏到第二半导体开关之间的传输路径上的高频信号 第一个半导体开关和输出端; 以及电压控制器,其在第二半导体开关断开时导致第二半导体开关的两端的电位差。
    • 14. 发明授权
    • Oscillation frequency control circuit
    • 振荡频率控制电路
    • US08044722B2
    • 2011-10-25
    • US12591189
    • 2009-11-12
    • Hiroki Kimura
    • Hiroki Kimura
    • H03L7/085
    • H03L7/14
    • To provide a highly stable oscillation frequency control circuit wherein the frequency thereof is corrected, an adequate range of the input levels of external reference signals is determined in accordance with temperature characteristics in detecting the external reference signal, and the control voltage to a VCO is controlled within and outside the adequate range. An oscillation frequency control circuit includes a selection switch that connects the phase comparator to the loop filter in an external reference synchronization mode and that connects the fixed voltage supplying circuit to the loop filter in a fixed voltage mode, and a CPU that switches the selection switch to the external reference synchronization mode or to the fixed voltage mode based on whether the detected voltage of an external reference signal level is within or outside of the adequate range.
    • 为了提供其频率被校正的高度稳定的振荡频率控制电路,在检测外部参考信号时根据温度特性确定外部参考信号的输入电平的适当范围,并且控制到VCO的控制电压 内部和外部的适当范围。 振荡频率控制电路包括选择开关,其以外部参考同步模式将相位比较器连接到环路滤波器,并且以固定电压模式将固定电压供应电路连接到环路滤波器;以及CPU,其将选择开关 基于外部参考信号电平的检测电压是否在适当范围之内或之外,到外部参考同步模式或固定电压模式。
    • 15. 发明申请
    • VCO DRIVING CIRCUIT AND FREQUENCY SYNTHESIZER
    • VCO驱动电路和频率合成器
    • US20100264962A1
    • 2010-10-21
    • US12826236
    • 2010-06-29
    • Yasuo KITAYAMAHiroki KimuraNaoki OnishiNobuo Tsukamoto
    • Yasuo KITAYAMAHiroki KimuraNaoki OnishiNobuo Tsukamoto
    • H03L7/08
    • H03L7/093H03L1/026H03L7/107H03L7/1075H03L7/18H03L7/189
    • A VCO driving circuit and a frequency synthesizer wherein the impedance viewed from a VCO control terminal is reduced to prevent the VCO phase noise characteristic from degrading. A VCO driving circuit and a frequency synthesizer having the VCO driving circuit, which comprises a coarse adjustment DAC that receives a digital data, which has a coarse adjustment frequency, to output an analog signal; a fine adjustment DAC that receives a digital data, which has a fine adjustment frequency, to output an analog signal; a low response speed LPF5 that removes noise from the output signal from the coarse adjustment DAC and then provides the resultant signal as an input to a VCO control terminal; a high response speed LPF7 that converts the output signal from the fine adjustment DAC to a voltage, thereby smoothing the signal; a resistor that connects an input stage of the LPF5 to that of the LPF7; and a capacitor used for providing a capacitive coupling such that the output of the LPF7 is added to that of the LPF5.
    • VCO驱动电路和频率合成器,其中从VCO控制端子观察的阻抗减小,以防止VCO相位噪声特性降级。 VCO驱动电路和具有VCO驱动电路的频率合成器,其包括具有粗略调整频率的接收数字数据的粗调DAC以输出模拟信号; 微调DAC,其接收具有微调频率的数字数据,以输出模拟信号; 低响应速度LPF5,其从粗调DAC输出信号中去除噪声,然后将所得到的信号作为输入提供给VCO控制端; 高响应速度LPF7,其将来自微调DAC的输出信号转换为电压,从而平滑信号; 将LPF5的输入级与LPF7的输入级连接的电阻; 以及用于提供电容耦合的电容器,使得LPF7的输出被添加到LPF5的输出。
    • 16. 发明授权
    • PLL circuit
    • PLL电路
    • US07791416B2
    • 2010-09-07
    • US12222530
    • 2008-08-11
    • Hiroki KimuraTsukasa KobataYasuo KitayamaNaoki Onishi
    • Hiroki KimuraTsukasa KobataYasuo KitayamaNaoki Onishi
    • H03B1/00H03L7/06H03L7/093
    • H03L7/093H03L7/18
    • A PLL circuit which can absorb variation of phase noise characteristic due to temperature and individual difference and has a phase noise suppression characteristic stable in a wide frequency band is provided. The PLL circuit comprises, at the succeeding stage, a first register for storing a first parameter for controlling the loop gain, a first multiplier for multiplying the output of the phase comparator by a first parameter, a second register for storing a second parameter for controlling the response characteristic, a second multiplier for multiplying the output of the first multiplier by a second parameter, and a CPU for setting optimum parameters in the first and second registers depending on the use frequency band, the ambient temperature, and the device individual difference. By controlling the loop gain and the response characteristic to optimum values, a good suppression characteristic in a wide frequency band is achieved.
    • 提供一种可以吸收由于温度和个体差异引起的相位噪声特性的变化并且具有在宽频带中稳定的相位噪声抑制特性的PLL电路。 PLL电路在后续阶段包括用于存储用于控制环路增益的第一参数的第一寄存器,用于将相位比较器的输出乘以第一参数的第一乘法器,用于存储用于控制的第二参数的第二寄存器 响应特性,用于将第一乘法器的输出乘以第二参数的第二乘法器和用于根据使用频带,环境温度和设备个体差异来设置第一和第二寄存器中的最佳参数的CPU。 通过将环路增益和响应特性控制为最佳值,实现了宽频带中良好的抑制特性。
    • 17. 发明申请
    • TEST APPARATUS, MANUFACTURING METHOD, AND TEST METHOD
    • 测试装置,制造方法和测试方法
    • US20090033528A1
    • 2009-02-05
    • US12145510
    • 2008-06-25
    • Hiroki Kimura
    • Hiroki Kimura
    • H03M1/10
    • H03M1/109H03M1/12
    • There is provided a test apparatus for testing a device under test, the test apparatus including: a test signal supplying section that supplies a digital input signal for testing purposes, to the device under test; a reference signal output section that outputs an analogue reference signal in accordance with the digital input signal; a difference obtaining section that outputs an analogue difference signal representing a difference between the analogue reference signal and an analogue output signal outputted by the device under test in accordance with the digital input signal; and a determining section that determines whether the analogue output signal shows a defect or not based on the analogue difference signal.
    • 提供了一种用于测试被测设备的测试设备,该测试设备包括:测试信号提供部分,用于将测试用的数字输入信号提供给被测设备; 参考信号输出部分,根据数字输入信号输出模拟参考信号; 差分获取部分,输出表示根据数字输入信号的被测器件输出的模拟参考信号和模拟输出信号之间的差的模拟差分信号; 以及确定部,其基于所述模拟差分信号来确定所述模拟输出信号是否显示缺陷。
    • 19. 发明授权
    • Golf ball
    • 高尔夫球
    • US07388066B2
    • 2008-06-17
    • US11234221
    • 2005-09-26
    • Hiroyuki NagasawaYoshihiro YamanaHidekazu SaitoHiroki Kimura
    • Hiroyuki NagasawaYoshihiro YamanaHidekazu SaitoHiroki Kimura
    • A63B37/12C08G18/44
    • A63B37/12A63B37/0003A63B37/0031A63B2209/00C08G18/4018C08G18/44C08G18/4854C08G18/664C09D175/04
    • In a golf ball composed of a core and one or more cover layers which enclose the core, at least one cover layer is made primarily of a thermoplastic polyurethane obtained by a polyurethane forming reaction of an organic polyisocyanate compound with a long-chain polyol and a chain extender, and satisfies conditions (1) to (3) below: (1) the long-chain polyol includes a copolymeric polycarbonate polyol having a number-average molecular weight of 400 to 4,000; (2) the thermoplastic polyurethane present in the cover material (after molding) has an inherent viscosity, as measured in DMF, of more than 1.5 dl/g; and (3) the thermoplastic polyurethane present in the cover material (after molding) has an inherent viscosity, as measured in a DMF solution containing 0.05 mol/L of n-butylamine, of at least 0.5 dl/g. The golf ball has an improved scuff resistance, particularly an improved low-temperature scuff resistance.
    • 在由芯和围绕芯的一个或多个覆盖层组成的高尔夫球中,至少一个覆盖层主要由通过有机多异氰酸酯化合物与长链多元醇的聚氨酯形成反应获得的热塑性聚氨酯和 扩链剂,满足下述条件(1)〜(3):(1)长链多元醇包括数均分子量为400〜4000的共聚聚碳酸酯多元醇; (2)存在于覆盖材料(成型后)中的热塑性聚氨酯具有大于1.5dl / g的在DMF中测得的特性粘度; 和(3)存在于覆盖材料(模塑后)中的热塑性聚氨酯具有至少0.5dl / g的在含有0.05mol / L正丁胺的DMF溶液中测得的特性粘度。 高尔夫球具有改进的抗磨损性,特别是改进的低温抗磨损性。