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    • 63. 发明申请
    • Billiard training aid apparatus and method
    • 台球训练辅助装置及方法
    • US20050009613A1
    • 2005-01-13
    • US10914587
    • 2004-08-09
    • Mark Davis
    • Mark Davis
    • A63D15/00
    • A63D15/006
    • A billiard training air for promoting accuracy and consistency in contacting an object ball with a cue ball to effect and desired path for the object ball and a resultant path and position for the cue ball includes an alignment body supported above the object ball, an object ball laser projecting a forward beams that is positioned on the desired path along a longitudinal axis, a impact indicating laser downwardly projecting a contact line along the object ball for indicating a contact point for the cue ball, a light unit for projecting a ghost ball image on the longitudinal axis at the contact point for indicating the impact position for the cue ball, and a pair of transverse lasers for projecting lateral beam to indicate and reference post impact cue ball position.
    • 一种台球训练空气,用于提高使球体与提示球接触的准确性和一致性,以实现对象球的所需路径和所需的路线,以及用于球杆的合成路径和位置包括支撑在对象球上方的对准体,对象球 激光器沿着纵向轴线投射位于期望路径上的前向光束,指示激光向下投影沿着物体球的接触线的冲击,以指示用于提示球的接触点,用于将重影图像投射到的光单元 用于指示提示球的撞击位置的接触点处的纵向轴线和用于突出横梁的一对横向激光器以指示和参考后冲击提示球位置。
    • 66. 发明授权
    • Adjustable closure lock
    • 可调闭锁
    • US5960653A
    • 1999-10-05
    • US710430
    • 1996-09-17
    • Norman Binz DeWalchJeffrey Mark Davis
    • Norman Binz DeWalchJeffrey Mark Davis
    • E05B65/00B65D55/14
    • E05B65/0089E05B65/006Y10T70/443Y10T70/5031Y10T70/5566Y10T70/5867Y10T70/7751
    • A door closure for an electric meter box comprises a barrel lock, a lock receiver, a tie rod, a locking nut, and a base plate. The lock includes a shank portion, a head portion, and a flange. The head portion resides in a hole in the meter box door, and the flange captures the outside surface of the door. The lock shank is received by a hole in one end of the lock receiver. The hole has an internal groove for receiving the locking balls in the lock shank. The other end of the lock receiver receives the threaded end of a tie rod. The other end of the tie rod is welded to a base plate, which is screwed into the back of the meter box. The position of the lock receiver can be adjusted to match the depth of the meter box by screwing the receiver up or down on the tie rod. The position of the receiver is then fixed by a lock nut immediately behind the lock receiver. The lock receiver can also be aligned with the door hole by flexing the tie rod.
    • 用于电表箱的门盖包括筒锁,锁接收器,拉杆,锁紧螺母和基板。 该锁包括柄部,头部和凸缘。 头部位于仪表箱门中的孔中,法兰捕获门的外表面。 锁定柄被锁定接收器的一端的孔接收。 该孔具有用于接收锁定柄中的锁定球的内部凹槽。 锁定接收器的另一端接收拉杆的螺纹端。 拉杆的另一端焊接到基板上,底板被拧入仪表箱的后部。 可以通过在拉杆上上下旋转接收器来调节锁定接收器的位置以匹配仪表盒的深度。 接收器的位置然后由紧固在锁定接收器后面的锁紧螺母固定。 锁定接收器也可以通过使拉杆弯曲而与门孔对齐。
    • 67. 发明授权
    • Joint maximum likelihood channel and timing error estimation
    • 联合最大似然信道和定时误差估计
    • US5706314A
    • 1998-01-06
    • US439329
    • 1995-05-11
    • Mark DavisLong Huynh
    • Mark DavisLong Huynh
    • H04L7/04H04L7/10H04L27/06
    • H04L7/042H04L7/10
    • A system and method for jointly determining initial tap coefficients for a maximum likelihood sequence estimating equalizer and a timing error of an incoming signal, in one embodiment, receives the incoming signal into a receiver, and locates a known portion within a time frame of the incoming signal. The known portion is compared with a stored representation of the known portion, and with a stored representation of a derivative of the known portion. The initial tap coefficients and timing error of the incoming signal are jointly determined based on the comparing of the known portion with the stored representations, and a subsequent known portion is located within a subsequent time frame of the incoming signal based on the timing error. The initial tap coefficients are passed to a maximum likelihood sequence estimating equalizer.
    • 在一个实施例中,用于联合确定最大似然序列估计均衡器的初始抽头系数和输入信号的定时误差的系统和方法,将输入信号接收到接收机中,并且在传入的时间帧内定位已知部分 信号。 已知部分与已知部分的存储表示以及已知部分的导数的存储表示进行比较。 基于已知部分与所存储的表示的比较,输入信号的初始抽头系数和定时误差共同确定,并且随后的已知部分基于定时误差位于输入信号的后续时间帧内。 初始抽头系数被传递到最大似然序列估计均衡器。