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    • 22. 发明授权
    • Method and apparatus for signal transmission and reception
    • 用于信号发送和接收的方法和装置
    • US06263017B1
    • 2001-07-17
    • US09450085
    • 1999-11-29
    • William J. Miller
    • William J. Miller
    • H04B138
    • H04K1/02H04L25/03343H04L69/40
    • A method and modem for communicating serial input data over a transmission link. Serial input data is partitioned into parallel data elements prior to rotation by an invertible linear mapping. Resulting frames of parallel signal elements sequentially modulate a carrier, which is then transmitted over the link. After receipt of the modulated carrier from the link, the signal is demodulated and assembled into frames of parallel signal elements which are de-rotated by an inverse linear mapping. Thresholding the result of the inverse mapping recovers the parallel data elements, which are then re-assembled into serial output data. The linear mapping employs: 1) commuting rotation matrices for convolutionally rotating data vectors into signal vectors and vice-versa; 2) filter bank polyphase rotation matrices; or 3) computationally efficient multi-rate wavelet filter banks. Transmitter pre-emphasis places most of the information in lower baseband frequencies; complimentary de-emphasis occurs in the receiver. Logarithmic amplification of the baseband signal prior to carrier modulation improves modulation gain and transmit channel noise attenuation. Coefficients of the rotation matrix of the receiver are adaptively equalized to correct for transmission path distortion. FM double-side band is employed in systems requiring minimized cost and complexity. FM single-side band is employed in systems in which bandwidth reduction is desirable. AM is also employable.
    • 一种用于通过传输链路传送串行输入数据的方法和调制解调器。 串行输入数据在通过可逆线性映射旋转之前被划分为并行数据元素。 并行信号单元的所得帧顺序地调制载波,然后通过链路发送。 在从链路接收到调制载波之后,该信号被解调并组合成并行信号元素的帧,其通过反向线性映射去旋转。 对逆映射的结果进行阈值恢复并行数据元素,然后将其重新组合成串行输出数据。 线性映射采用:1)将卷积旋转数据向量的旋转矩阵换成信号向量,反之亦然; 2)滤波器组多相旋转矩阵; 或3)计算效率高的多速率小波滤波器组。 发射机预加重将大部分信息置于较低的基带频率; 在接收机中发生免费去加重。 载波调制之前的基带信号的对数放大提高了调制增益和发射信道噪声衰减。 接收机的旋转矩阵的系数被自适应地均衡以校正传输路径失真。 FM双边带用于需要最小化成本和复杂性的系统中。 FM单边带用于需要带宽降低的系统中。 AM也可以使用。
    • 23. 发明授权
    • Method and apparatus for micropositioning optical fibers
    • 微型定位光纤的方法和装置
    • US5881189A
    • 1999-03-09
    • US567792
    • 1995-12-05
    • Joel P. CarberryWilliam J. Miller
    • Joel P. CarberryWilliam J. Miller
    • G02B6/28G02B6/26
    • G02B6/2856
    • To make an overclad fiber optic coupler, the bare regions of a plurality of optical fibers are positioned within a glass capillary tube. The midregion of the tube is then collapsed and stretched to cause coupling between the fibers. To obtain desirable coupling characteristics, the fibers must be situated in the glass tube bore in side-by-side fashion such that the cross-sectional configuration of the fibers constitutes a given geometrical array. To ensure that the fibers are properly positioned within the glass tube, they are fed to that tube from a plurality of guide tubes, the ends of which are retained adjacent to the end of the glass tube in side-by-side fashion in the given geometrical array.
    • 为了制造外包纤维光耦合器,多个光纤的裸露区域位于玻璃毛细管内。 然后将管的中间部分收缩并拉伸以引起纤维之间的连接。 为了获得期望的耦合特性,纤维必须以并排的方式位于玻璃管孔中,使得纤维的横截面构型构成给定的几何阵列。 为了确保纤维适当地定位在玻璃管内,它们从多个导管被供给到该管,其端部在给定的并排方式并排地保持在玻璃管的端部附近 几何阵列。
    • 29. 发明授权
    • Flexible shaft having detachable end connections
    • 柔性轴具有可拆卸的端部连接
    • US4555238A
    • 1985-11-26
    • US665618
    • 1984-10-29
    • William J. MillerNorman Faber, Jr.
    • William J. MillerNorman Faber, Jr.
    • E04G21/08F16C1/06F16C1/08F16D3/00
    • F16C1/06E04G21/08
    • A rigid connector secured to the front end of the core of the flexible shaft of this invention has a front portion axially receivable in a noncircular well in a driving shaft of a driving device and has a radially projecting circumferential flange rearwardly adjacent to that portion. Secured to the front of its sheath is the rear one of two telescoped tubular parts, each of which has a counterbore that opens to the other and defines an internal annular shoulder. One tubular part is threaded into the counterbore in the other, and the flange is axially slidable in the counterbore in that one, between the shoulders. The front portion of the front tubular part is formed for detachable securement directly to a conventional fixed collar on the driving device.
    • 固定到本发明的柔性轴的芯的前端的刚性连接器具有轴向可接收在驱动装置的驱动轴中的非圆形井中的前部,并且具有与该部分相邻的径向突出的周向凸缘。 固定到其护套的前部是两个伸缩管状部件中的后部之一,每个管状部件具有通向另一个并且限定内部环形肩部的沉孔。 一个管状部分在另一个中被拧入沉孔中,并且该凸缘在该沉头孔中在肩部之间在轴向上可滑动。 前管状部件的前部形成为可拆卸地固定到驱动装置上的常规固定环上。
    • 30. 发明授权
    • Solar heating and subterranean cooling
    • 太阳能加热和地下冷却
    • US4294228A
    • 1981-10-13
    • US959123
    • 1978-11-09
    • Robert KrugerWilliam J. Miller
    • Robert KrugerWilliam J. Miller
    • F24D11/00F24S10/40F24J3/02F24H9/08E04B1/74
    • F24D11/007F24J2/05Y02B10/22Y02E10/44Y10S126/907
    • A pyramidal-shaped living structure, having a triangular base plan, includes a pyramidal-shaped solar heating unit which forms the apex of the living structure. The heating unit contains a heat conducting chamber having a transparent wall. Solar rays enter the heat conducting chamber and impinge upon heat conducting elements disposed therein. The heat conducting elements absorb the heat energy in the solar rays causing the temperature of the elements to rise. The elements in turn heat air contained within the chamber. The heated air is then distributed to the interior of the living structure or to a subterranean heat exchange and storage unit, where the heat is extracted from the air and stored for use within the structure during those periods when there is not enough solar energy available to produce the heat required in the living areas.
    • 具有三角形基底平面的金字塔状的生活结构包括形成活体结构的顶点的金字塔形的太阳能加热单元。 加热单元包括具有透明壁的导热室。 太阳光线进入导热室并撞击置于其中的导热元件。 导热元件吸收太阳光线中的热能,导致元件的温度升高。 这些元件反过来加热了室内所含的空气。 然后将加热的空气分配到生活结构的内部或地下热交换和存储单元,其中从空气中提取热量并在没有足够的太阳能可用的那些时段期间将其储存在结构内使用 产生生活所需的热量。