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11. 发明授权

US4121290A Analog sound velocity calculator 失效
标题翻译：模拟声速计算器
公开(公告)号：US4121290A
公开(公告)日：1978-10-17
申请号：US788371
申请日：1977-04-18
申请人： Royce Allen , Jerry L. Sutton , Dan M. Griffin , Hal W. Frye , Joseph G. Colborn
发明人： Royce Allen , Jerry L. Sutton , Dan M. Griffin , Hal W. Frye , Joseph G. Colborn
IPC分类号： G01H5/00 , G06G7/48 , G06G7/78 , H04B13/00
CPC分类号： G01H5/00 , G06G7/48
摘要： An analog apparatus for determining the velocity of sound at a selected position in a liquid media is provided with a means for representing the conductivity, temperature, and depth of the position in the form of analog voltages, and is further provided with an analog calculating means receiving each of the voltages for calculating the velocity of sound as a function of conductivity, temperature, and depth. The sound velocity may be calculated at a succession of positions to provide a sound velocity versus depth profile of the liquid media.
摘要翻译：用于确定液体介质中选定位置处的声速的模拟装置具有用于以模拟电压的形式表示位置的电导率，温度和深度的装置，还具有模拟计算装置接收用于计算作为电导率，温度和深度的函数的声速的每个电压。可以在连续的位置处计算声速，以提供液体介质的声速与深度分布。

12. 发明授权

US4118782A Digital sound velocity calculator 失效
标题翻译：数字声速计算器
公开(公告)号：US4118782A
公开(公告)日：1978-10-03
申请号：US780750
申请日：1977-03-24
申请人： Royce H. Allen , Jerry L. Sutton , Dan M. Griffin , Hal W. Frye , Joseph G. Colborn
发明人： Royce H. Allen , Jerry L. Sutton , Dan M. Griffin , Hal W. Frye , Joseph G. Colborn
IPC分类号： G01H5/00 , G01P3/00
CPC分类号： G01H5/00
摘要： A digital apparatus for determining the velocity of sound at a selected position in a liquid media is provided with a means for representing the conductivity, temperature and depth of the position in the form of digital numbers, and provides a digital calculating means receiving each of the digital numbers for calculating the velocity of sound as a function of conductivity, temperature, and depth. The sound velocity may be calculated at a succession of positions to provide sound velocity versus depth profile of the liquid media.
摘要翻译：用于确定在液体介质中的选定位置处的声速的数字装置设置有用于以数字数字的形式表示位置的电导率，温度和深度的装置，并且提供数字计算装置，用于计算声速作为电导率，温度和深度的函数的数字数字。可以在连续的位置处计算声速，以提供液体介质的声速与深度曲线。

13. 发明授权

US07672415B1 System and method for detecting a presence and frequency offset of a spread spectrum radio frequency signal 有权
标题翻译：用于检测扩频射频信号的存在和频率偏移的系统和方法
公开(公告)号：US07672415B1
公开(公告)日：2010-03-02
申请号：US11540136
申请日：2006-09-28
申请人： Thomas R. Giallorenzi , Johnny M. Harris , Dan M. Griffin , Sam Kingston
发明人： Thomas R. Giallorenzi , Johnny M. Harris , Dan M. Griffin , Sam Kingston
IPC分类号： H04L7/00
CPC分类号： H04L7/043
摘要： A system and method for detecting a presence and frequency offset of a spread spectrum radio frequency signal is disclosed. The method comprises receiving the spread spectrum radio signal. The signal can be sampled to form a plurality of signal samples. Each signal sample can be multiplied by a complex conjugate of a proximate signal sample to form a plurality of signal sample pairs. The signal sample pairs can be summed over a predetermined dwell time period to form a data vector having a magnitude and angle offset to enable detection of the signal and to enable a frequency offset between the spread spectrum radio frequency signal and a receiver frequency reference to be determined.
摘要翻译：公开了一种用于检测扩频射频信号的存在和频率偏移的系统和方法。该方法包括接收扩频无线电信号。信号可被采样以形成多个信号采样。每个信号样本可以乘以邻近信号样本的复共轭以形成多个信号样本对。信号样本对可以在预定的停留时间周期内相加以形成具有幅度和角度偏移的数据矢量，以使得能够检测信号，并且使得扩频射频信号和接收机频率参考之间的频率偏移能够是决心。

14. 发明授权

US07602835B1 Multi-rate spread spectrum composite code 有权
标题翻译：多速率扩频复合码
公开(公告)号：US07602835B1
公开(公告)日：2009-10-13
申请号：US10915777
申请日：2004-08-10
申请人： Samuel C. Kingston , Johnny M. Harris , Thomas R. Giallorenzi , Dan M. Griffin , David W. Thorson
发明人： Samuel C. Kingston , Johnny M. Harris , Thomas R. Giallorenzi , Dan M. Griffin , David W. Thorson
IPC分类号： H04B1/00
CPC分类号： H04B1/7095 , H04B2201/70703 , H04B2201/70707
摘要： A correlator despreads a P/N long code constructed from two or more constituent codes A, B, C having N, M and L elements respectively. In a third stage, L filter taps decorrelate elements of the third constituent code from the input received signal, leaving elements of code AB. The outputs of the third stage delay line are summed and input into a second stage delay line having M filter taps to decorrelate the elements of the second constituent code from the input to the second stage, leaving elements of code A. The outputs of the second stage delay line are summed and input to a first stage delay line having N filter taps. The output of the first stage delay line is summed and input into a shift register. An energy peak in the shift register indicates the phase of the P/N elements in the register is proper.
摘要翻译：相关器分别从具有N，M和L个元素的两个或更多个组成码A，B，C构成的P / N长码解扩。在第三阶段，L滤波器从输入接收信号抽头去除关联第三组成码的元素，留下代码AB的元素。将第三级延迟线的输出相加并输入具有M个滤波器抽头的第二级延迟线，以将第二组成码的元素从输入到第二级去相关，留下代码A的元素。第二级延迟线的输出相位延迟线被相加并输入到具有N个滤波器抽头的第一级延迟线。将第一级延迟线的输出相加并输入到移位寄存器。移位寄存器中的能量峰值表示寄存器中P / N元件的相位是否正确。

15. 发明授权

US07602834B1 System and method for determining a fine frequency offset of a received signal 有权
标题翻译：用于确定接收信号的精细频率偏移的系统和方法
公开(公告)号：US07602834B1
公开(公告)日：2009-10-13
申请号：US11540139
申请日：2006-09-28
申请人： Thomas R. Giallorenzi , Johnny M. Harris , Dan M. Griffin , Sam Kingston
发明人： Thomas R. Giallorenzi , Johnny M. Harris , Dan M. Griffin , Sam Kingston
IPC分类号： H04B1/00
CPC分类号： H04B1/70752 , H04L2027/0065 , H04W24/00
摘要： A system and method for determining a fine frequency offset of a composite code spread spectrum signal is disclosed. The method includes despreading at least one component of the composite spread spectrum signal to form a partially despread composite spread spectrum signal. A set of on-time samples are selected from the signal. The set of on-time samples are rotated by a predetermined frequency amount. The set of rotated samples are placed into a plurality of frequency bins, with each frequency bin representative of a different frequency estimate. An energy for the signal in each frequency bin is determined to find the bin having the greatest energy.
摘要翻译：公开了一种用于确定复合码扩频信号的精细频率偏移的系统和方法。该方法包括解扩复合扩频信号的至少一个分量以形成部分解扩复合扩频信号。从信号中选择一组接通时间样本。该一组接通时间样品旋转预定频率量。旋转的样本集合被放置在多个频率仓中，每个频率块表示不同的频率估计。确定每个频率仓中的信号的能量以找到具有最大能量的仓。

16. 发明授权

US06285261B1 Digital clock recovery loop 有权
标题翻译：数字时钟恢复回路
公开(公告)号：US06285261B1
公开(公告)日：2001-09-04
申请号：US09610177
申请日：2000-07-05
申请人： George E. Pax , James E. O'Toole , Dan M. Griffin
发明人： George E. Pax , James E. O'Toole , Dan M. Griffin
IPC分类号： H03L100
CPC分类号： H03L7/0895 , H03L7/0896 , H03L7/113 , H04B1/707 , H04L7/033
摘要： A method of using a phase lock loop to receive an oscillating input signal and produce an output signal, the phase lock loop comprising a plurality of flip-flops which are chained together, the plurality of flip-flops including a first flip-flop having a first output, including a second flip-flop having an input coupled to the first output and having a second output, and including a third flip-flop having an input coupled to the second output, the phase lock loop further comprising a control node, the method including using the flip-flops to determine time spacing between transitions to perform a frequency comparison of the output signal relative to the input signal; extracting a clock from an input digital signal; and performing phase control and adjusting the voltage on the control node of the voltage controlled oscillator.
摘要翻译：一种使用锁相环接收振荡输入信号并产生输出信号的方法，所述锁相环包括链接在一起的多个触发器，所述多个触发器包括具有第一触发器的第一触发器，第一输出，包括具有耦合到第一输出并具有第二输出的输入的第二触发器，并且包括具有耦合到第二输出的输入的第三触发器，所述锁相环还包括控制节点，方法，包括使用触发器来确定转变之间的时间间隔以执行输出信号相对于输入信号的频率比较; 从输入数字信号中提取时钟; 并执行相位控制和调节压控振荡器的控制节点上的电压。

17. 发明授权

US5774022A Digital clock recovery loop 失效
标题翻译：数字时钟恢复回路
公开(公告)号：US5774022A
公开(公告)日：1998-06-30
申请号：US707220
申请日：1996-08-29
申请人： Dan M. Griffin , George E. Pax , James E. O'Toole
发明人： Dan M. Griffin , George E. Pax , James E. O'Toole
IPC分类号： H03L7/089 , H03L7/113 , H04B1/707 , H04L7/033 , H03L7/10
CPC分类号： H03L7/113 , H03L7/0895 , H03L7/0896 , H04L7/033 , H04B1/707
摘要： A communications system including a clock recovery circuit that extracts a clock signal from incoming digital data, the clock recovery circuit including a voltage controlled oscillator having a control node and having an output producing an output wave having a frequency that varies in response to a voltage applied to the control node; charge pump and loop filter circuitry that controls the rate of change of the voltage on the control node of the voltage controlled oscillator; a start-up circuit that performs frequency detection and, in conjunction with the charge pump and loop filter circuitry, adjusts the voltage on the control node of the voltage controlled oscillator; and a state machine that performs phase detection and adjusts the voltage on the control node of the voltage controlled oscillator.
摘要翻译：一种通信系统，包括从输入数字数据中提取时钟信号的时钟恢复电路，所述时钟恢复电路包括具有控制节点的压控振荡器，并具有产生具有响应于施加的电压而变化的频率的输出波的输出到控制节点; 电荷泵和环路滤波器电路，用于控制压控振荡器的控制节点上的电压变化率; 启动电路，执行频率检测，并结合电荷泵和环路滤波器电路调节压控振荡器的控制节点上的电压; 以及执行相位检测并调节压控振荡器的控制节点上的电压的状态机。

18. 发明授权

US07760697B1 Fast and long range node discovery in spread spectrum networks 有权
标题翻译：快速和长距离节点在扩频网络中的发现
公开(公告)号：US07760697B1
公开(公告)日：2010-07-20
申请号：US11136789
申请日：2005-05-24
申请人： Thomas R. Giallorenzi , Johnny M. Harris , Dan M. Griffin , Richard B. Ertel , Eric K. Hall
发明人： Thomas R. Giallorenzi , Johnny M. Harris , Dan M. Griffin , Richard B. Ertel , Eric K. Hall
IPC分类号： H04B7/216 , H04J13/00
CPC分类号： H04B7/18504 , H04B1/74
摘要： A first node seeking entry into a secure spread spectrum communications network sends a discovery burst at a low rate, and sends traffic bursts at a higher rate to exchange data rate for range. A receiving node receives discovery bursts via an omni-directional link and transmits and receives traffic bursts via directional links. As a node within the network detects a fading signal, it transmits a discovery burst at low rate on both its uplink and downlink channels. Other nodes may reply via the original uplink channel, and the fading node updates a list of candidate nodes through which it can relay through the network to its intended recipient by reversing the link direction of its original uplink and original downlink channels.
摘要翻译：寻求进入安全扩频通信网络的第一节点以低速率发送发现突发，并以更高的速率发送业务突发以交换范围的数据速率。接收节点通过全向链路接收发现突发，并通过定向链路发送和接收业务突发。由于网络内的一个节点检测到衰落信号，所以它在其上行链路和下行链路信道上都以低速率传输发现突发。其他节点可以通过原始上行链路信道进行应答，并且衰落节点通过反转其原始上行链路和原始下行链路信道的链路方向来更新其可以通过网络中继到其预期接收者的候选节点的列表。

19. 发明授权

US07664164B1 Correlation apparatus and method for accomodating spreading code frequency offset 有权
标题翻译：用于适应扩频码频偏的相关装置和方法
公开(公告)号：US07664164B1
公开(公告)日：2010-02-16
申请号：US11351465
申请日：2006-02-10
申请人： Thomas R. Giallorenzi , Johnny M. Harris , Dan M. Griffin , Richard Ertel , Eric K. Hall
发明人： Thomas R. Giallorenzi , Johnny M. Harris , Dan M. Griffin , Richard Ertel , Eric K. Hall
IPC分类号： H04B1/00
CPC分类号： H04B1/7093 , H04B1/7075
摘要： An apparatus and method for correlating a signal over a correlation interval while accommodating spreading code frequency offset is described. In one embodiment, the apparatus includes a plurality of correlators, where each correlator forms a correlation result corresponding to a unique code frequency offset hypothesis. Each correlator selects samples from a tapped delay line at a tap position moved along the delay line at a rate corresponding to the correlator unique code frequency offset hypothesis.
摘要翻译：描述了一种用于在适应扩展码频率偏移的同时在相关间隔上相关信号的装置和方法。在一个实施例中，该装置包括多个相关器，其中每个相关器形成对应于唯一代码频率偏移假设的相关结果。每个相关器以对应于相关器唯一代码频率偏移假设的速率沿着延迟线移动的抽头位置处的抽头延迟线选择样本。

20. 发明授权

US07545878B1 Efficient circular clipping implementation using simplified CORDIC rotators 有权
标题翻译：使用简化的CORDIC旋转器实现高效的圆截距实现
公开(公告)号：US07545878B1
公开(公告)日：2009-06-09
申请号：US10608374
申请日：2003-06-26
申请人： Eric K. Hall , Richard B. Ertel , Dan M. Griffin , Thomas R. Giallorenzi
发明人： Eric K. Hall , Richard B. Ertel , Dan M. Griffin , Thomas R. Giallorenzi
IPC分类号： H04B15/00
CPC分类号： G06F7/4818
摘要： A system for the efficient use of CORDIC rotators is provided. The system includes at least one first rotator operating in vector mode and includes a sign storage buffer. The system also includes at least one bit inverter coupled between the first rotator and a second rotator, the second rotator operating in rotation mode.
摘要翻译：提供了一种有效利用CORDIC转子的系统。该系统包括至少一个以向量模式操作的第一旋转器，并且包括符号存储缓冲器。该系统还包括耦合在第一旋转器和第二旋转器之间的至少一个位逆变器，第二旋转器以旋转模式操作。

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