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
    • 1. 发明授权
    • Variable gain amplifier and high-frequency signal receiving apparatus comprising the same
    • 可变增益放大器和包括该可变增益放大器的高频信号接收装置
    • US08081033B2
    • 2011-12-20
    • US13107598
    • 2011-05-13
    • Ryangsu KimGeorge Hayashi
    • Ryangsu KimGeorge Hayashi
    • H03F1/22
    • H03G1/0029H03F1/223H03F3/72H03G3/3068
    • A cascode amplification unit includes a plurality of cascode amplifiers connected in parallel. Each of the cascode amplifiers has two transistors. A cascode current source unit includes a plurality of cascode current sources connected in parallel. Each of the cascode current sources has two transistors. Both the output end of the cascode amplification unit and the output end of the cascode current source unit are connected to a load circuit. The control circuit turns on and off each cascode transistor of the cascode amplifier and each cascode transistor of the cascode current source so that an amount of current passing through the load circuit is constant.
    • 共射共基放大单元包括并联连接的多个共源共栅放大器。 每个共源共栅放大器都有两个晶体管。 共源共栅电流源单元包括并联连接的多个共源共栅电流源。 每个共源共栅电流源都有两个晶体管。 共源共栅放大单元的输出端和共源共栅电流源单元的输出端都连接到负载电路。 控制电路打开和关闭共源共栅放大器的每个共源共栅晶体管和共源共栅电流源的每个共源共栅晶体管,使得通过负载电路的电流量是恒定的。
    • 7. 发明授权
    • Oversampling D/A converter using a bidirectional shift register
    • 使用双向移位寄存器的过采样D / A转换器
    • US5699064A
    • 1997-12-16
    • US509665
    • 1995-07-31
    • Shiro SakiyamaShiro DoshoMasakatsu MaruyamaGeorge HayashiSeizo InagakiAkira Matsuzawa
    • Shiro SakiyamaShiro DoshoMasakatsu MaruyamaGeorge HayashiSeizo InagakiAkira Matsuzawa
    • H03M3/04H03M1/78
    • H03M3/376H03M3/50
    • In an interpolative modulator, a signal which varies by only .+-.1 with one clock from a 1-bit quantizer is used as a shift-direction control signal. The shift-direction control signal is given to a bidirectional shift register. The bidirectional shift register shifts data based on the value of the shift-direction control signal that has been received. The output from the bidirectional shift register is given as a control signal to a resistive-ladder-type D/A converter. The resistive-ladder-type D/A converter outputs an analog potential corresponding to a switch selected by the above control signal. Therefore, if a delay difference occurs between any two bits, two adjacent switches are simply selected simultaneously, so that the output from the resistive-ladder-type D/A converter varies continuously. Consequently, there can be provided an oversampling D/A converter of resistive-ladder type with high accuracy and an increased yield, which is free from glitch (transiently generated noise).
    • 在内插调制器中,使用从1比特量化器的一个时钟仅变化+/- 1的信号作为移位方向控制信号。 移位方向控制信号被提供给双向移位寄存器。 双向移位寄存器基于接收到的移位方向控制信号的值来移位数据。 来自双向移位寄存器的输出作为电阻梯型D / A转换器的控制信号给出。 电阻梯型D / A转换器输出与由上述控制信号选择的开关相对应的模拟电位。 因此,如果任意两位之间发生延迟差,则两个相邻的开关被简单地同时选择,使得电阻梯型D / A转换器的输出连续变化。 因此,可以提供具有高精度和增加的产量的电梯梯型的过采样D / A转换器,其没有毛刺(瞬时产生的噪声)。
    • 9. 发明授权
    • Microscope base illuminator
    • 显微镜基座灯
    • US4955978A
    • 1990-09-11
    • US352929
    • 1989-05-17
    • George Hayashi
    • George Hayashi
    • G02B21/06G02B21/08
    • G02B21/086
    • A illuminator base for illumination of a microscope specimen from below the specimen includes a fluorescent lamp bulb for generation of illuminating light on a viewing axis. The fluorescent lamp bulb has at least two arms, each having an active volume within a glass wall. The arms are disposed with each active volume generally tangent to the viewing axis. A line intersecting the viewing axis and the axes of lamp arms lies at an acute angle to the viewing axis. Preferably the lamp bulb is u-shape, the angle is about 40.degree. and 50.degree., and light transmitted by the lamp arms along the viewing axis is substantially without shadow.
    • 用于从样本下方照射显微镜样本的照明器基座包括用于在观察轴上产生照明光的荧光灯泡。 荧光灯泡具有至少两个臂,每个臂在玻璃壁内具有有效体积。 臂被布置成与观察轴线大致相切的每个有效容积。 与观察轴相交的线和灯臂的轴线与观察轴成锐角。 优选地,灯泡为u形,角度为大约40度和50度,并且灯臂沿着观察轴传播的光基本上没有阴影。