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    • 91. 发明授权
    • Gain control circuitry for QAM demodulator
    • 用于QAM解调器的增益控制电路
    • US5347569A
    • 1994-09-13
    • US841820
    • 1992-02-26
    • Takeshi Yamamoto
    • Takeshi Yamamoto
    • H03G3/20H04L27/38H04L5/12H04L23/02
    • H03G3/3052H04L27/3809
    • In a QAM demodulator, gain-controlled amplifiers are provided respectively for the in-phase and quadrature channel baseband components of the signal, and a set of data and error signals is recovered from the output of each gain-controlled amplifier. To determine the location of the signal point of each channel component, the QAM signal constellation is divided along the axis of the channel into two outermost regions A, an innermost region B and two intermediate regions C, and further divided along the axis of the channel into two outer regions E and an inner region D therebetween. In response to each set of data and error signals, the location of the signal point of each baseband component is determined with respect to the regions A, B and C to produce a first logical output signal and with respect to the regions D and E to produce a second logical output signal. Each of the gain-controlled amplifiers is controlled in response to the first logical output signal derived from the own channel and the second logical output signal derived from the other channel.
    • 在QAM解调器中,分别为信号的同相和正交信道基带分量提供增益控制放大器,并从每个增益控制放大器的输出恢复一组数据和误差信号。 为了确定每个通道分量的信号点的位置,将QAM信号星座沿通道的轴线划分为两个最外区域A,最内区域B和两个中间区域C,并沿通道的轴线进一步分割 分成两个外部区域E和它们之间的内部区域D. 响应于每组数据和误差信号,相对于区域A,B和C确定每个基带分量的信号点的位置以产生第一逻辑输出信号,并且相对于区域D和E到 产生第二逻辑输出信号。 响应于从自身通道导出的第一逻辑输出信号和从另一个通道导出的第二逻辑输出信号来控制每个增益控制放大器。
    • 93. 发明授权
    • Tissue culture flask
    • 组织培养瓶
    • US5139952A
    • 1992-08-18
    • US728048
    • 1991-07-08
    • Shinzo HondaJiro AkiyamaTakeshi Yamamoto
    • Shinzo HondaJiro AkiyamaTakeshi Yamamoto
    • C12M1/24
    • C12M23/08
    • A tissue culture flask includes a container main body comprising a box having a bottom surface for supporting a substance to be cultured, a side surface, and an upper surface. A cylindrical neck is provided on the side surface of the container main body to communicate with the interior of the container main body, and extends obliquely upward with respect to the bottom surface and defining a first opening at an end located away from the container main body and a second opening opposite the first opening. In the flask, (1) a first angle defined by (a) a first straight line connecting a given point on the bottom surface including an edge thereof and a given point on an edge of the first opening and (b) a second straight line on the inner circumferential wall and connecting a given point on an edge of the first opening and a given point on an edge of the second opening is not greater than (2) a second angle defined by (c) said second straight line and (d) the longest third straight line connecting a given point on an edge of the first opening and a given point on an edge of the second opening.
    • 组织培养瓶包括容器主体,该容器主体包括具有用于支撑被培养物质的底面,侧面和上表面的盒体。 圆筒形颈部设置在容器主体的侧表面上,与容器主体的内部连通,并相对于底面倾斜向上延伸并且在远离容器主体的一端形成第一开口 和与第一开口相对的第二开口。 在烧瓶中,(1)由(a)连接包括其边缘的底表面上的给定点和第一开口的边缘上的给定点的第一直线限定的第一角度,以及(b)第二直线 在内周壁上并且连接第一开口的边缘上的给定点和第二开口的边缘上的给定点不大于(2)由(c)所述第二直线限定的第二角度(d )连接第一开口的边缘上的给定点和第二开口的边缘上的给定点的最长的第三直线。
    • 94. 发明授权
    • Inner diameter measuring machine
    • 内径测量机
    • US4885845A
    • 1989-12-12
    • US196121
    • 1988-05-19
    • Takeshi YamamotoMasanori Arai
    • Takeshi YamamotoMasanori Arai
    • G01B3/46
    • G01B3/46
    • The present invention relates to an inner diameter measuring machine, wherein a displacement measuring and displaying device provided with a group of first switches for setting measuring conditions are disposed on the generally central portion of a main case of measuring machine. One end of a casing is formed to provide a head having a measuring element or elements, and the other end thereof is formed to provide a handle portion. In the handle portion, two sets of groups of second switches having a switch and the like for holding a displayed value during measuring are provided, so that one hand operation can be performed during measuring. Further, in the handle portion, a plunger axially movable in cooperation with a spindle is provided, whereby this plunger is moved through a control lever rotatably supported on the end portion of the casing.
    • 内径测量机技术领域本发明涉及一种内径测量机,其中设置有一组用于设定测量条件的第一开关的位移测量和显示装置设置在测量机主壳体的大致中心部分上。 壳体的一端形成为提供具有测量元件的头部,并且其另一端形成为提供手柄部分。 在手柄部分中,设置两组具有用于在测量期间保持显示值的开关等的第二开关组,从而可以在测量期间执行单手操作。 此外,在手柄部分中,提供与心轴一起轴向移动的柱塞,由此该柱塞移动通过可旋转地支撑在壳体的端部上的控制杆。
    • 98. 发明授权
    • Cylinder gauge
    • 气瓶规
    • US4476634A
    • 1984-10-16
    • US422417
    • 1982-09-23
    • Takeshi YamamotoMasao Nakahara
    • Takeshi YamamotoMasao Nakahara
    • G01B5/12G01B3/26
    • G01B3/26
    • A cylinder gauge capable of comparing and measuring a diameter of a hole of a workpiece.This cylinder gauge comprising a spindle, a head receiving the bottom portion of the spindle, a measuring element inserted into the head and linearly movable in the radial direction of the spindle, and a guide member slidably provided on the head and abutting the measuring element in a vertical state against a surface to be measured, wherein a first spring for biasing the measuring element outwardly is provided on the side of the spindle and a second spring for biasing the guide member outwardly is provided above the axis of the measuring element, so that the diameter of a shallow hole can be measured.
    • 一种能够比较和测量工件孔的直径的气缸量规。 该气缸表包括一个主轴,一个头部,它接收主轴的底部,一个测量元件插入到磁头中,并且可以沿主轴的径向线性移动;一个可滑动地设置在磁头上的导向件, 相对于要测量的表面的垂直状态,其中用于将测量元件向外偏置的第一弹簧设置在心轴的侧面,并且用于将引导构件向外偏置的第二弹簧设置在测量元件的轴线的上方,使得 可以测量浅孔的直径。