Distinguishing between final coding of received signals in a PCM modem
    35.
    发明授权
    Distinguishing between final coding of received signals in a PCM modem 失效
    区分PCM调制解调器中接收信号的最终编码

    公开(公告)号:US06560277B2

    公开(公告)日:2003-05-06

    申请号:US09780200

    申请日:2001-02-09

    CPC classification number: H04L25/4927

    Abstract: A method for determining the encoding law of an incoming signal in a network which possibly contains an A-&mgr; or &mgr;-A conversion includes obtaining digital impairment learning (DIL) probing data, generating an ordered table of levels therefrom, using the table to find two functions, and using a logical analysis of the functions to determine the encoding law of the signal. A first function is a maximum from the values DL(i) and the threshold Th1 which are less than T(i), with T(i)=a+bi, and DL(i)=L(i+16)−2L(i) with L(i) being the DIL signal corresponding to the transmitted Ucode=i. A second function Q is defined by: Q = 1 2 ⁢ ( ∑ i = i ⁢   ⁢ 5 i = i ⁢   ⁢ 6 ⁢   ⁢ DL ⁡ ( i ) + ∑ i = i ⁢   ⁢ 5 i = i ⁢   ⁢ 6 ⁢   ⁢ DLm ⁡ ( i ) ) - S m ⁢ Ly 2 2 where DLm(i) is the median value of a windowed group of values for DL(i) where i ranges from i5 to i6, Ly=i6−i5−1, and Sm is a mean of a windowed group of slopes, wherein each slope relates to the difference between certain DLm(i) values.

    Abstract translation: 一种用于确定可能包含A-mu或μ-A转换的网络中的输入信号的编码规则的方法包括获得数字损伤学习(DIL)探测数据,使用所述表从其中生成有序的级别表,以找到 两个功能,并使用函数的逻辑分析来确定信号的编码规律。 T(i)= a + bi,DL(i)= L(i + 16)-2L的第一函数是从值DL(i)和阈值Th1小于T(i)的最大函数 (i)L(i)是对应于发送的Ucode = i的DIL信号。 第二函数Q由下式定义:其中DLm(i)是DL(i)的窗口化值组的中值,其中i从i5到i6,Ly = i6-i5-1,Sm是 窗口组的斜坡,其中每个斜率与某些DLm(i)值之间的差异相关。

    Moving head coating apparatus and method
    36.
    发明授权
    Moving head coating apparatus and method 失效
    摇头涂装置及方法

    公开(公告)号:US06540833B1

    公开(公告)日:2003-04-01

    申请号:US09227667

    申请日:1999-01-08

    Abstract: The invention pertains to a coating apparatus and method in which most of the relative movement between a dispensing head and the substrate to be coated is provided by the coating head. The moving head configuration reduces the system footprint and diminishes leveling problems. A powered shuttle mechanism carries a dispensing head above a substrate to be coated while riding on a bearing located underneath the chuck holding the substrate thereby providing rigidity and reducing the system footprint. Chuck support is designed to accommodate anticipated vertical sag in the dispensing head by supporting the chuck at points along its periphery thereby permitting the chuck to sag in conjunction with the dispensing head. The shuttle mechanism is equipped with means for automatically adjusting the height of the dispensing head with respect to substrate to compensate for substrate placement error, substrate dimensional variation, and mechanical drift in the mechanical machine parts. Coating consistency is enhanced using such height adjustment. A part of the apparatus containing the fluid delivery equipment and in communication with the dispensing head may be placed on a cart and removably attached to the rest of the apparatus. There is a utility station comprising equipment for cleaning and priming the dispensing head which may be located on the removable cart. A pump in addition to main remote pumping means may be integrally mounted on the dispensing head to more precisely control fluid flow to the dispensing head. The chuck may be configured to be micro deformable so as to maintain the surface of a substrate upon it at a constant height. Fluid may be dispensed along openings of selected lengths along the length of the dispensing head using die lips attached to the dispensing head or by cutting a plurality of slots in a single dispensing head.

    Abstract translation: 本发明涉及一种涂布装置和方法,其中分配头与要涂覆的基底之间的大部分相对运动由涂覆头提供。 移动头配置减少了系统占用空间并减少了调平问题。 动力穿梭机构在被涂覆的基底上方运送分配头,同时骑在位于夹持基底的卡盘下方的轴承上,从而提供刚性并减少系统占地面积。 卡盘支撑件设计成通过在其周边的点处支撑卡盘来适应分配头部中的预期垂直松弛,从而允许卡盘与分配头一起下垂。 穿梭机构配备有用于自动调节分配头相对于基底的高度以补偿机械机器部件中的基板放置误差,基板尺寸变化和机械漂移的装置。 使用这种高度调节可提高涂层的一致性。 包含流体输送设备并与分配头连通的装置的一部分可以放置在推车上并且可移除地附接到装置的其余部分上。 有一个实用工作站,包括用于清洁和启动分配头的设备,该分配头可以位于可移动的推车上。 除了主远程泵送装置之外的泵可以一体地安装在分配头上,以更精确地控制流到分配头的流体。 卡盘可以被配置为可微变形的,以便将基板的表面保持在恒定的高度。 可以使用附接到分配头的模唇或通过在单个分配头中切割多个狭槽沿着分配头的长度沿着选定长度的开口分配流体。

    Constellation design for a PCM modem
    37.
    发明授权
    Constellation design for a PCM modem 有权
    PCM调制解调器的星座设计

    公开(公告)号:US06178200B1

    公开(公告)日:2001-01-23

    申请号:US09238321

    申请日:1999-01-28

    CPC classification number: H04L25/4927

    Abstract: Modem constellations are designed by independently optimizing for each slot of a frame, the distances between constellation points used for that slot. A maximum number of points N(0) are chosen having at least the minimum distance d0 without exceeding a power limitation Plim. Using N(0), an attempt is made to increase the d0 in the constellation without exceeding Plim. Constellations may be further optimized by, where possible, decreasing N(0) in a particular constellation without affecting the total data rate of the frame. Thus, a maximum potentially achievable data rate Rmax is calculated given the number of points which are in each of the six constellations, and comparing Rmax to a standards-permitted data rate DR; and then, if Rmax exceeds DR, by decreasing N(0) in one or more constellations, provided the decrease in the number of points does not cause a recalculated Rmax to drop below DR. Further optimization is obtained by attempting to increase d0 in one or more slots by permitting that slot(s) to exceed Plim, provided the average power of the frame is not exceeded. This is accomplished by finding the slot with the maximum error probability, increasing d0 for that slot (while maintaining N(0)) to thereby exceed frame power limitations for that slot, and checking to see whether the changes to the constellation in that slot violates the average frame power limitations. A simple system for checking average constellation power is also provided.

    Abstract translation: 调制解调器星座是通过对帧的每个时隙独立优化而设计的,即用于该时隙的星座点之间的距离。 选择具有至少最小距离d0而不超过功率限制Plim的最大点数N(0)。 使用N(0),尝试增加星座中的d0,而不超过Plim。 在可能的情况下,可以通过降低特定星座中的N(0)而不影响帧的总数据速率来进一步优化星座。 因此,给定在六个星座中的每一个中的点的数量,并且将Rmax与标准允许的数据速率DR进行比较来计算最大可能达到的数据速率Rmax; 然后,如果Rmax超过DR,则通过减少一个或多个星座中的N(0),只要点数的减少不会导致重新计算的Rmax降至低于DR。 通过在不超过帧的平均功率的情况下,尝试通过允许该时隙超过Plim来增加一个或多个时隙中的d0来获得进一步优化。 这是通过找到具有最大误差概率的时隙来实现的,增加该时隙的d0(同时保持N(0)),从而超过该时隙的帧功率限制,并且检查该时隙中的星座的改变是否违反 平均帧功率限制。 还提供了一种用于检查平均星座功率的简单系统。

    Pet bed
    39.
    外观设计
    Pet bed 有权

    公开(公告)号:USD935701S1

    公开(公告)日:2021-11-09

    申请号:US29714314

    申请日:2019-11-22

    Applicant: Qin Wang

    Designer: Qin Wang

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