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    • 21. 发明申请
    • System and method for mitigating filter transients in an ultra wideband receiver
    • 用于减轻超宽带接收机中的滤波器瞬变的系统和方法
    • US20070025417A1
    • 2007-02-01
    • US11190901
    • 2005-07-28
    • Deepak JosephTimothy Miller
    • Deepak JosephTimothy Miller
    • H04B1/69
    • H04B1/71637
    • A system (600) and method (500) are presented for mitigating a transient in processing a received signal (710) in a signal path associated with an Ultra Wideband (UWB) receiver. An impending processing event associated with processing the received signal is detected. A processing element (201, 202, 203, 204) capable of generating a transient when activated, is activated prior to the processing event such that the transient is mitigated or cleared when the processing event occurs and the received signal is processed. At least a portion of the processing element is normally deactivated so as to conserve power. The processing event includes one or more of: an acquisition processing event, a lock processing event, and a tracking processing event associated with the received signal in the signal path.
    • 提出了一种系统(600)和方法(500),用于减轻处理与超宽带(UWB)接收机相关联的信号路径中的接收信号(710)的瞬态。 检测与处理接收信号相关联的即将到来的处理事件。 在处理事件之前激活能够产生瞬态的处理元件(201,202,203,204),使得当处理事件发生并处理接收到的信号时,缓和或清除瞬变。 处理元件的至少一部分通常被去激活以节省功率。 处理事件包括与信号路径中的接收信号相关联的获取处理事件,锁定处理事件和跟踪处理事件中的一个或多个。
    • 22. 发明申请
    • Method for sharing bandwidth using reduced duty cycle signals and media access control
    • 使用减少的占空比信号和媒体访问控制共享带宽的方法
    • US20060203795A1
    • 2006-09-14
    • US11128269
    • 2005-05-13
    • Matthew WelbornWilliam ShvodianJoel ApisdorfTimothy MillerJohn McCorkle
    • Matthew WelbornWilliam ShvodianJoel ApisdorfTimothy MillerJohn McCorkle
    • H04J3/24H04L12/43H04J3/00H01Q11/12H04B1/04
    • H04W52/367H04B1/7176H04W52/286H04W72/12
    • A method is provided for transmitting data. A first device (121) generates a first signal (320) having a first duty cycle, comprising a first gated-on portion (323) and a first gated-off portion (363) in a time slot (260); and a second device (125) generates a second signal (330) having second duty cycle, comprising a second gated-on portion (333) and a second gated-off portion (363) in the same time slot (260). The first gated-on portion (323) is generated during a first segment of the time slot (260) and the first gated-off portion (363) is generated during a second segment of the time slot (260), while the second gated-on portion (333) is generated during the second segment and the second gated-off portion (363) is generated during the first segment. Media access control (MAC) can be used to further define positions within time slots (250) and provide error correction, power control, and the like. A preamble (860) can be transmitted at an increased power level to facilitate acquisition.
    • 提供了一种用于传输数据的方法。 第一装置(121)产生具有第一占空比的第一信号(320),包括在时隙(260)中的第一选通部分(323)和第一门控部分(363); 并且第二装置(125)产生具有第二占空比的第二信号(330),该第二信号包括在同一时隙(260)中的第二选通部分(333)和第二选通部分(363)。 在时隙(260)的第一段期间产生第一选通部分(323),并且在时隙(260)的第二段期间产生第一选通部分(363),而第二门控 在第二段期间产生部分(333),并且在第一段期间产生第二门控部分(363)。 媒体访问控制(MAC)可用于进一步定义时隙内的位置(250),并提供纠错,功率控制等。 可以以增加的功率电平发送前导码(860)以便于采集。
    • 23. 发明申请
    • Decision feed forward equalizer system and method
    • 决策前馈均衡器系统和方法
    • US20060164270A1
    • 2006-07-27
    • US10538174
    • 2003-12-09
    • Timothy MillerPaul Runkle
    • Timothy MillerPaul Runkle
    • H03M3/00
    • H04L25/03038H04L25/03057H04L2025/03375H04L2025/0349H04L2025/03617
    • An equalizer and corresponding methods is arranged and constructed to mitigate adverse effects of a wireless channel (300). The equalizer includes a delay line (503) coupled to an input signal (501) and comprising a delay circuit coupled to an output combiner (507) that is operable to provide an interim signal (g0 . . . gN) and a feed forward circuit (505) coupled to the delay line and operable to provide a feed forward signal (506) that comprises a hard decision scaled according to a scaling factor corresponding to an estimate of channel parameters, wherein the output combiner is operable to combine the feed forward signal and the interim signal to provide an output signal (509) that is compensated for an adverse effect of the wireless channel on the input signal.
    • 布置和构造均衡器和相应的方法以减轻无线信道的不利影响(300)。 均衡器包括耦合到输入信号(501)的延迟线(503),并且包括耦合到输出组合器(507)的延迟电路,其可操作以提供中间信号(g0 ... gN)和前馈 电路(505),其耦合到所述延迟线并且可操作以提供包括根据对应于信道参数的估计的缩放因子定标的硬判决的前馈信号(506),其中所述输出组合器可操作以组合所述前馈 信号和中间信号以提供补偿无线信道对输入信号的不利影响的输出信号(509)。
    • 24. 发明申请
    • Circuit and method for dynamically adjusting a filter bandwidth
    • 用于动态调整滤波器带宽的电路和方法
    • US20060140322A1
    • 2006-06-29
    • US11022883
    • 2004-12-28
    • Terence JohnsonTimothy Miller
    • Terence JohnsonTimothy Miller
    • H03D3/24
    • H03L7/093H03D13/00H03L7/0991H04L7/0004H04L7/033
    • A tracking circuit (100) is provided for controlling a locally-generated clock. A receive channel (110) in the tracking circuit receives an incoming signal and a local clock, generates a local signal based on the local clock, and compares the local signal and the incoming signal to generate a data signal and an unfiltered phase error signal. A loop filter (120) filters the unfiltered phase error signal to provide a filtered phase error signal. A numerically controlled oscillator (140) generates a correction clock based on the filtered phase error signal. And a filter control circuit (160) provides one or more filter control signals to control operational parameters of the loop filter. The correction clock is provided to the receive channel to modify at least one of the phase and frequency of the local clock. In addition, a sample switch (125) may also be provided to sample the unfiltered phase error signal.
    • 提供跟踪电路(100)用于控制本地产生的时钟。 跟踪电路中的接收通道(110)接收输入信号和本地时钟,基于本地时钟产生本地信号,并且比较本地信号和输入信号以产生数据信号和未滤波的相位误差信号。 环路滤波器(120)对未滤波的相位误差信号进行滤波以提供滤波的相位误差信号。 数控振荡器(140)基于滤波的相位误差信号产生校正时钟。 并且滤波器控制电路(160)提供一个或多个滤波器控制信号以控制环路滤波器的操作参数。 校正时钟被提供给接收通道以修改本地时钟的相位和频率中的至少一个。 此外,还可以提供采样开关(125)以对未滤波的相位误差信号进行采样。
    • 26. 发明授权
    • Method and apparatus for the use of sentinel microorganism
    • 使用前哨微生物的方法和装置
    • US6146843A
    • 2000-11-14
    • US386736
    • 1999-08-31
    • Dwight D. BowmanWilliam C. GhiorseMichael B. JenkinsTimothy Miller
    • Dwight D. BowmanWilliam C. GhiorseMichael B. JenkinsTimothy Miller
    • B01L3/00C12Q1/02C12Q1/24C12Q1/22C12Q1/04
    • B01L3/508C12Q1/02C12Q2304/10C12Q2304/13G01N2333/37G01N2333/43595G01N2333/44Y10S435/968
    • A sentinel chamber for containing microorganisms in a matrix, and methods for the use of the chamber in studying organisms in the field. The matrix is typically the same material as that within which the chamber will be placed. The chamber is made of a cylindrical body having a porous filter at each end. The filter at one end is contained under a snap-on cap, making the filling of the chamber quick and easy. The method of the invention uses the sentinel chambers to study the characteristics and survival of a sentinel organism in a particular environment. The medium present in the environment (i.e. soil, manure, sewage sludge, etc.) is placed in the sentinel chamber and a quantity of the sentinel organism (i.e. C. parvum oocysts) is injected into the medium. A filter is placed across the open end of the chamber, and held in place by the cap. The sentinel chamber is then buried or immersed in the environment (i.e. a field, manure pile, septic tank). After a specified time, during which the conditions in the environment are monitored, the sentinel chamber is removed and the organism studied.
    • 用于在基质中含有微生物的哨兵室,以及用于研究该领域生物体的方法。 基质通常是与放置腔室相同的材料。 该室由两端具有多孔过滤器的圆柱体制成。 一端的过滤器包含在卡扣式盖子下面,使得容器的填充变得容易。 本发明的方法使用前哨室来研究特定环境中前哨生物的特征和存活。 将环境中存在的介质(即土壤,粪便,污水污泥等)放置在前哨室中,并将一定数量的前哨生物体(即小孢子虫卵囊)注射到培养基中。 过滤器放置在室的开口端,并通过盖保持在适当的位置。 然后将哨兵室埋入或浸没在环境(即田野,粪便堆,化粪池)中。 在规定的时间之后,监测环境条件,哨兵室被移除,有机体被研究。