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    • 6. 发明授权
    • Sense amplifier
    • 感应放大器
    • US4558241A
    • 1985-12-10
    • US626795
    • 1984-07-02
    • Yasuo SuzukiHiroshi HiraoYasuaki Suzuki
    • Yasuo SuzukiHiroshi HiraoYasuaki Suzuki
    • G11C7/06G11C11/409G11C11/419G11C11/56H03K5/24G01R19/165G11C11/06H03K3/356
    • G11C11/56G11C11/5692G11C7/065G11C7/06
    • A flip-flop type sense amplifier for a semiconductor memory device is disclosed, the sense amplifier comprising a pair of CMOS inverters cross-coupled with each other to form a CMOS flip-flop circuit having a pair of buffer circuits, for receiving the read-out voltage signals from multi-level memory cells and a predetermined reference voltage, respectively, and a pair of switching circuits for inverting a power source voltage across the flip-flop circuit through common sources of the flip-flop circuit, in response to the transition between a stand-by sequence and a latching operating. The common source of the p-channel transistors of the CMOS flip-flop circuit is connected to a negative potential source, and the common source of the n-channel transistors is connected to a positive potential source during a stand-by sequence, and vice versa, during a latching operation. This unique potential supply method enhances operational speed of the sense amplifier. In a multi-level memory device, a plurality of the sense amplifiers are connected in parallel for the discrimination of the read-out signals changing in a range of a few volts.
    • 公开了一种用于半导体存储器件的触发器型读出放大器,该读出放大器包括一对互相交叉耦合的CMOS反相器,以形成具有一对缓冲电路的CMOS触发器电路, 分别来自多电平存储单元的输出电压信号和预定的参考电压;以及一对开关电路,用于响应于转换,通过触发器电路的公共源来反转触发器电路两端的电源电压 在待机序列和锁定操作之间。 CMOS触发器电路的p沟道晶体管的共同源极连接到负电位源,并且n沟道晶体管的公共源在待机序列期间连接到正电位源, 反之亦然,在锁定操作期间。 这种独特的电位供应方法提高了读出放大器的运行速度。 在多电平存储器件中,多个读出放大器并联连接,用于区分在几伏范围内变化的读出信号。
    • 8. 发明申请
    • WORM GEAR MECHANISM
    • WORM齿轮机构
    • US20090241712A1
    • 2009-10-01
    • US12388023
    • 2009-02-18
    • Yasuaki SuzukiYuki Okabe
    • Yasuaki SuzukiYuki Okabe
    • F16H1/16
    • F16H1/16Y10T74/19828
    • A worm gear mechanism includes a worm wheel having a central axis; and a worm shaft made of resin having a rotational axis and a plurality of geared portions which engages with the worm wheel, the worm shaft allowing the worm wheel to rotate about the central axis of the worm wheel when rotating about the rotational axis of the worm shaft, tooth root portions of the geared portions being configured to have a profile which varies gradually along an axial direction of the worm shaft relative to a datum line being perpendicular to the axial direction of the worm shaft and passing through the central axis of the worm wheel.
    • 蜗轮机构包括具有中心轴线的蜗轮; 以及由具有旋转轴线的树脂制成的蜗杆轴和与蜗轮啮合的多个齿轮部分,蜗杆轴允许蜗轮围绕蜗轮的中心轴线旋转,当绕蜗杆的旋转轴线旋转时 所述齿轮部的齿根部被构造成具有沿着所述蜗杆的轴向方向逐渐变化的轮廓,所述轮廓相对于垂直于所述蜗杆轴的轴向并穿过所述蜗杆的中心轴线的基准线 轮。