Key switch
    31.
    发明授权
    Key switch 有权
    钥匙开关

    公开(公告)号:US08314721B2

    公开(公告)日:2012-11-20

    申请号:US12432707

    申请日:2009-04-29

    CPC classification number: H01H13/64

    Abstract: A key switch can generate several signals is provided. The key switch includes a key top, a body, a first electronic circuit, a second electronic circuit, and a switch mechanism. Pressing the key top, the switch key generates a first signal while the first electronic circuit is closed by the switch mechanism; the switch key generates a second signal while the second electronic circuit is closed; and the switch key generates a third signal while both the first electronic circuit and the second electronic circuit is closed.

    Abstract translation: 钥匙开关可以产生几个信号。 键开关包括键顶,主体,第一电子电路,第二电子电路和开关机构。 按键顶部,开关键产生第一信号,而第一电子电路由开关机构闭合; 所述开关键在所述第二电子电路闭合时产生第二信号; 并且当第一电子电路和第二电子电路都闭合时,开关键产生第三信号。

    Fine symbol timing synchronization method and apparatus in OFDM system
    32.
    发明授权
    Fine symbol timing synchronization method and apparatus in OFDM system 有权
    OFDM系统中的符号定时同步方法和装置

    公开(公告)号:US08229011B2

    公开(公告)日:2012-07-24

    申请号:US12323948

    申请日:2008-11-26

    Applicant: Yu-Ting Xu

    Inventor: Yu-Ting Xu

    Abstract: A fine symbol timing synchronization method and apparatus in an orthogonal frequency-division multiplexing (OFDM) system are provided. The fine symbol timing synchronization method finds a path with a minimum mean square error (MMSE) as a first path among a plurality of paths, and a formula of the mean square error (MSE) used by the method is a simplified formula of the original MSE formula with low calculation complexity. Therefore, the time required by the fine symbol timing synchronization method is short, and a correct first path can be found, so as to lock a starting position of a fast Fourier transform (FFT) window on a starting position of a symbol signal of the correct first path.

    Abstract translation: 提供了一种正交频分复用(OFDM)系统中的精细符号定时同步方法和装置。 精细符号定时同步方法在多个路径中找到具有最小均方误差(MMSE)作为第一路径的路径,并且该方法使用的均方误差(MSE)的公式是原始 具有低计算复杂度的MSE公式。 因此,精细符号定时同步方法所需的时间短,可以找到正确的第一路径,以便将快速傅立叶变换(FFT)窗口的开始位置锁定在 正确的第一条路径。

    Service Regulator with Improved Boost Performance
    35.
    发明申请
    Service Regulator with Improved Boost Performance 有权
    具有提升性能的服务调节器

    公开(公告)号:US20080257427A1

    公开(公告)日:2008-10-23

    申请号:US12105899

    申请日:2008-04-18

    Abstract: A regulator comprises a regulator valve and an actuator. The regulator valve comprises a valve body equipped with a customized valve port. That is, the valve seat is designed to have a customized seat height depending on a diameter of an orifice through the valve port, a longitudinal dimension of an orifice through the valve port, and/or a flow capacity of the valve port. Such a design advantageously maximizes the efficiency at which gas flows through the regulator. The actuator is coupled to the valve body and comprises a valve disc disposed within the valve body and adapted for displacement between a closed position engaging the valve seat and an open position spaced from the valve seat.

    Abstract translation: 调节器包括调节阀和致动器。 调节阀包括配有定制阀口的阀体。 也就是说,阀座被设计成具有取决于通过阀口的孔的直径,通过阀口的孔的纵向尺寸和/或阀口的流量的定制的座椅高度。 这种设计有利地使气体流过调节器的效率最大化。 致动器联接到阀体并且包括设置在阀体内并适于在与阀座接合的关闭位置和与阀座间隔开的打开位置之间的位移的阀盘。

    Pulley
    38.
    外观设计
    Pulley 有权

    公开(公告)号:USD935311S1

    公开(公告)日:2021-11-09

    申请号:US29762480

    申请日:2020-12-16

    Applicant: Ting Xu

    Designer: Ting Xu

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