公开(公告)号：US11448065B2

公开(公告)日：2022-09-20

申请号：US16815262

申请日：2020-03-11

申请人： Halliburton Energy Services, Inc.

发明人： Yumin Zhang ,  Ehud Barak

IPC分类号： E21B47/20 ,  E21B47/18 ,  E21B7/04 ,  E21B47/06 ,  H03K7/04 ,  H03K7/08 ,  H03K9/04 ,  H03K9/08 ,  E21B44/06

摘要： Digital signal processing for mud pulse telemetry utilizes a variety of “On/Off” keying based modulation schemes, such as pulse width modulation (PWM) and pulse position modulation (PPM), to encode and/or decode information. A combination of PPM and PWM is disclosed that increases a bit rate while keeping a chip rate unchanged. The combination of PPM and PWM comprises determining a drilling condition and forming a message based on the drilling condition, forming a string of symbol values comprising the message, identifying a pulse width and a pulse start for the pulse based on a symbol value, providing a first pulse at a selected chip location, providing subsequent pulses to form the pulse width, and forming a quiet period at the end of the pulse width.

公开(公告)号：US09531432B2

公开(公告)日：2016-12-27

申请号：US14895016

申请日：2014-06-04

申请人： ELEKTROTEHNICKI FAKULTET SVEUCILISTA U OSIJEKU

发明人： Tomislav Matic ,  Marijan Herceg ,  Josip Job

IPC分类号： H03K7/04 ,  H03K7/06 ,  H03K9/04 ,  H03K9/06 ,  H04B1/717 ,  H03M1/12 ,  H04B1/7163 ,  H04B17/364

CPC分类号： H04B1/7174 ,  H03M1/125 ,  H04B1/7163 ,  H04B1/71632 ,  H04B17/364

摘要： An energy-efficient system for measurement of analog signals including one or more measuring units. Each measuring unit has a measuring probe which signal is processed by a modulator. All measuring units have identical modulators selected from the Time Encoding Machine family: Asynchronous Sigma Delta Modulator, Integrate And Fire Modulator and Integral Pulse Frequency Modulator. A signal from the modulator is processed by a delay circuit from which is optionally fed back to the modulator. Signals from the delay circuit and modulator are used to trigger a UWB pulse generator, which is optionally amplified and transmitted via transmission line or antenna. The delay circuit uniquely characterizes the measuring unit and enables the receiving unit to separate received signals from plurality of measuring units signals sent in an unsynchronized manner. The invention is useful for long term acquisition of analog signals, especially time varying signals such as biological signals.

摘要翻译： 一种用于测量包括一个或多个测量单元的模拟信号的节能系统。 每个测量单元都有一个测量探头，该信号由调制器处理。 所有测量单元具有从时间编码机系列中选择的相同调制器：异步ΣΔ调制器，积分和火焰调制器和积分脉冲频率调制器。 来自调制器的信号由延迟电路进行处理，延迟电路可选地反馈到调制器。 来自延迟电路和调制器的信号用于触发UWB脉冲发生器，其可选地通过传输线或天线放大和传输。 延迟电路唯一地表征测量单元，并且使接收单元能够将来自多个测量单元的接收信号分离成以不同步的方式发送的信号。 本发明对于长期获取模拟信号，特别是时变信号（例如生物信号）是有用的。

公开(公告)号：US08855187B2

公开(公告)日：2014-10-07

申请号：US13346031

申请日：2012-01-09

申请人： Friedrich Reining

发明人： Friedrich Reining

IPC分类号： H03K7/04 ,  H03K7/06 ,  H03K9/04 ,  H03K9/06 ,  H03G7/00 ,  H04R3/00

CPC分类号： H04R3/00 ,  H03G7/007

摘要： A signal processing method for enhancing the dynamic range of a signal is disclosed. The method comprises: a) forming an attenuated signal from an input signal; b) filtering each of the input and the attenuated signals such that the sum of their bandwidths is less than or equal to the bandwidth of a transmission channel; c) modulating a first one of the filtered input signal and the filtered attenuated signal, whereby the filtered input signal and the filtered attenuated signal occupy respective non-overlapping frequency ranges within the bandwidth of the transmission channel; and d) combining the modulated signal with the second one of the filtered input signal and the filtered attenuated signal to form a composite output signal.

摘要翻译： 公开了一种用于增强信号的动态范围的信号处理方法。 该方法包括：a）从输入信号形成衰减信号; b）对输入和衰减信号中的每一个进行滤波，使得它们的带宽之和小于或等于传输信道的带宽; c）调制经过滤波的输入信号和经滤波的衰减信号中的第一个，由此滤波后的输入信号和经滤波的衰减信号在传输信道的带宽内占据相应的非重叠频率范围; 以及d）将经调制的信号与经滤波的输入信号和经滤波的衰减信号中的第二信号组合以形成复合输出信号。

公开(公告)号：US07986729B2

公开(公告)日：2011-07-26

申请号：US10967850

申请日：2004-10-18

申请人： Philip T. Kennedy ,  Bruce D. Melick ,  David M. Snyder ,  Leslie D. Baych ,  Gregory P. Probst ,  Joseph A. Gerke

发明人： Philip T. Kennedy ,  Bruce D. Melick ,  David M. Snyder ,  Leslie D. Baych ,  Gregory P. Probst ,  Joseph A. Gerke

IPC分类号： H03K7/04 ,  H03K7/06 ,  H03K9/04 ,  H03K9/06

CPC分类号： H04B1/7172 ,  H04B1/7163 ,  H04B1/7176 ,  H04B2203/5416 ,  H04L5/1469 ,  H04L25/0384 ,  H04L25/4902 ,  H04L27/0004

摘要： The present invention provides for a methods, system, and apparatus relating to data transmission. One method of the present invention includes representing data using at least one ultra wideband pulse, sending the at least one ultra wideband pulse over an electrically conductive guided media, and recovering the data from the at least one ultra wideband pulse. The present invention can be used in conjunction with telephony applications, cable TV applications, power line applications, fiber optic applications, and data bus applications.

公开(公告)号：US07983334B2

公开(公告)日：2011-07-19

申请号：US11736284

申请日：2007-04-17

申请人： Chadi Abou Rjeily

发明人： Chadi Abou Rjeily

IPC分类号： H03K9/04 ,  H04B3/36 ,  H04B1/00

CPC分类号： H04L25/4902 ,  H04B1/7176 ,  H04B2001/6908 ,  H04W88/04

摘要： A method between terminals in a cooperative UWB pulse telecommunications system including a source terminal, a relay terminal, and a recipient terminal, the method including: transmitting, at the source terminal, a data symbol for the recipient terminal as a source signal constituted by a sequence of identical frames, the sequence corresponding to a symbol time, and each frame containing a pulse that is position-modulated by a PPM modulation alphabet; receiving, at the relay terminal, the source signal; detecting, at the relay terminal, a modulation position of a pulse in at least one frame of the source signal, referred to as the first position; transmitting, at the relay terminal, a relayed signal containing, in at least one predetermined subsequent frame of the symbol time, a pulse of which a position, referred to as a second position, is obtained from the first position by a permutation of the PPM modulation alphabet.

摘要翻译： 一种包括源终端，中继终端和接收终端的协作UWB脉冲电信系统中的终端之间的方法，所述方法包括：在源终端发送接收方终端的数据符号作为由 相同帧的序列，对应于符号时间的序列，并且每个帧包含由PPM调制字母表位置调制的脉冲; 在中继站处接收源信号; 在所述中继终端处检测被称为所述第一位置的所述源信号的至少一个帧中的脉冲的调制位置; 在中继终端处发送一个中继信号，该中继信号在符号时间的至少一个预定的后续帧中包含通过PPM置换从第一位置获得被称为第二位置的位置的脉冲 调制字母表。

公开(公告)号：US20100246660A1

公开(公告)日：2010-09-30

申请号：US12374737

申请日：2007-07-27

申请人： Michiaki Matsuo ,  Hideki Aoyagi ,  Hitoshi Asano ,  Kazuya Toki

发明人： Michiaki Matsuo ,  Hideki Aoyagi ,  Hitoshi Asano ,  Kazuya Toki

IPC分类号： H03K9/04

CPC分类号： H04L7/033 ,  H03L7/0807 ,  H03L7/0812 ,  H04B1/717 ,  H04B1/7183 ,  H04L7/0037

摘要： A received pulse signal based on an on-off keying modulation scheme is alternately sampled by AD conversion sections operated by a clock signal whose frequency is one-half of a transmission rate. In the synchronization, amounts of delay in sampling timing adjustment sections are made different from each other, whereby phases of two different points in a symbol pulse are sampled. An amount of delay in a variable delay section is adjusted in accordance with a result of comparison of the sampled values, thereby achieving synchronization. At the time of demodulation, the amount of delay in the variable delay section is held, and the amounts of delay in the sampling timing adjustment sections are switched to the same value, and the symbol pulse is alternately sampled. The sampled values are subjected to threshold value determination, and the determination result is subjected to parallel-to-serial conversion, whereby a demodulation output is acquired.

摘要翻译： 基于开关键控调制方式的接收脉冲信号由频率为传输速率的二分之一的时钟信号操作的AD转换部分交替采样。 在同步中，采样定时调整部分中的延迟量彼此不同，从而对符号脉冲中两个不同点的相位进行采样。 根据采样值的比较结果调整可变延迟部分的延迟量，从而实现同步。 在解调时，保持可变延迟部分中的延迟量，并将采样定时调整部分中的延迟量切换到相同的值，并且对符号脉冲进行交替采样。 对采样值进行阈值判定，对判定结果进行并行到串行转换，从而得到解调输出。

公开(公告)号：US07358781B2

公开(公告)日：2008-04-15

申请号：US11511700

申请日：2006-08-29

申请人： Heiko Kresse ,  Andreas Stelter ,  Ralf Schaeffer

发明人： Heiko Kresse ,  Andreas Stelter ,  Ralf Schaeffer

IPC分类号： H03B19/00 ,  H03K9/06 ,  H03K7/04 ,  H03K7/06 ,  H03K9/04 ,  G08C15/00

CPC分类号： G05B19/0423 ,  G05B2219/25177 ,  G05B2219/25392 ,  G05B2219/25428

摘要： The invention relates to an automation device, in which a multiplicity of physically distributed functional units communicate with each other by means of a common transmission protocol. The device has a microcontroller (110), which is assigned at least one clock generator (120) and one memory unit (150), and which is connected at least to one data source (140), which is designed to output a data bit-stream to be transmitted. A sequential sequence of equidistant samples of a sinusoidal time profile is stored in the memory unit (150), such that it can be called up, in such a manner that the samples can be output using either the clock of the first clock generator or the clock of the second clock generator, depending on the data bit-stream.

摘要翻译： 本发明涉及一种自动化设备，其中多个物理分布的功能单元通过公共传输协议相互通信。 该设备具有微控制器（110），其被分配有至少一个时钟发生器（120）和一个存储器单元（150），并且至少连接到一个数据源（140），该数据源被设计为输出数据位 流要发送。 将正弦时间曲线的等距离样本的顺序序列存储在存储器单元（150）中，使得可以调用它，使得样本可以使用第一时钟发生器的时钟或者 第二个时钟发生器的时钟，取决于数据位流。

公开(公告)号：US20070195877A1

公开(公告)日：2007-08-23

申请号：US11789595

申请日：2007-04-25

申请人： Martin Muecke ,  Joachim Moll

发明人： Martin Muecke ,  Joachim Moll

IPC分类号： H03K9/04

CPC分类号： H03K5/05 ,  G06F1/025 ,  H03K5/133 ,  H03K2005/00058

摘要： The present invention relates to a method and a corresponding system for generating a binary pulse stream (37) based on a stable clock (76), said method being characterized by the steps of: reading a sequence of pairs of values representing LOW and HIGH state duration, respectively, of consecutive pulses of said binary pulse stream (37), said pairs of values being related to said stable clock (76), providing for each value an integral multiple part and a fractional part of the cycle time of said stable clock (76), using said integral multiple part for controlling an edge forming unit (40), said edge forming unit (40) contributes said integral multiple part of the duration of the respective state of the respective pulse to said binary pulse stream (37) to be generated, and using said fractional part for controlling a delay modulation unit (42), said delay modulation unit (42) prolongs, according to said fractional part, the duration of the respective state of the respective pulse to said binary pulse stream (37) to be generated.

摘要翻译： 本发明涉及一种用于基于稳定时钟（76）产生二进制脉冲流（37）的方法和相应系统，所述方法的特征在于以下步骤：读取表示LOW和HIGH状态的一对值序列 所述二进制脉冲流（37）的连续脉冲的持续时间，所述对的值与所述稳定时钟（76）相关，为每个值提供所述稳定时钟的周期时间的整数倍部分和小数部分 （76），所述边缘形成单元（40）使用所述积分多个部分来控制边缘形成单元（40），将所述脉冲的相应状态的持续时间的整数倍部分贡献给所述二进制脉冲流（37） 并且使用所述小数部分来控制延迟调制单元（42），所述延迟调制单元（42）根据所述小数部分延长res的相应状态的持续时间 对所述二进制脉冲流（37）产生脉冲。

公开(公告)号：US20070159241A1

公开(公告)日：2007-07-12

申请号：US11715435

申请日：2007-03-08

申请人： Hiroji Akahori ,  Yoshihito Shimazaki

发明人： Hiroji Akahori ,  Yoshihito Shimazaki

IPC分类号： H03K7/04 ,  H03K9/04 ,  H03K9/06

CPC分类号： H03K9/04 ,  H04B1/71637 ,  H04L25/4902

摘要： A PPM signal demodulator for demodulating a PPM signal transmitted in a UWB radio communication system includes a rectifier for rectifying a received PPM signal to obtain an absolute value signal, integrator and comparators for integrating the absolute value signal for every first, second and third integral times and comparing the integrated values for the integral times, absolute value circuits for converting respective outputs of the integrator and comparators to corresponding absolute values, moving average circuits for moving-averaging respective outputs of the absolute value circuits, a determining circuit for generating demodulation data on the basis of the integrated and compared result by the integrator and comparator, and a main control for generating, on the basis of the outputs of the moving average circuits, integral interval control signals that control the first, second and third integral times to supply them to the respective integrator and comparators.

公开(公告)号：US20070153874A1

公开(公告)日：2007-07-05

申请号：US11619060

申请日：2007-01-02

申请人： Huseyin Arslan

发明人： Huseyin Arslan

IPC分类号： H04B1/00 ,  H03K9/04

CPC分类号： H04B1/71635

摘要： The present invention provides a novel technique for reducing the effect of CMI for PPM UWB signals. The system and method in accordance with the present invention greatly improves the performance of receivers and eliminates the possibility of catastrophic errors. The proposed technique introduces a variable modulation index instead of a fixed modulation index as was previously known in the art. The modulation index is changed over each frame within each symbol. In other words, a time hopping modulation index sequence is used over the frames of the UWB symbols in accordance with the present invention.

摘要翻译： 本发明提供了一种用于降低CMI对PPM UWB信号的影响的新技术。 根据本发明的系统和方法极大地改善了接收机的性能，并且消除了灾难性错误的可能性。 所提出的技术引入可变调制指数而不是如本领域已知的固定调制指数。 调制指数在每个符号内的每个帧上改变。 换句话说，根据本发明，在UWB符号的帧上使用跳时调制索引序列。