公开(公告)号：US20050151360A1

公开(公告)日：2005-07-14

申请号：US11077483

申请日：2005-03-10

申请人： John Bertrand ,  Gerald Goertzen ,  William Null

发明人： John Bertrand ,  Gerald Goertzen ,  William Null

IPC分类号： A61G5/04 ,  A61G5/10 ,  B60R21/00

CPC分类号： A61G5/10 ,  A61G5/043 ,  A61G5/06 ,  A61G5/101 ,  A61G5/1032 ,  A61G5/1078 ,  A61G5/1089 ,  A61G2203/14 ,  A61G2203/32 ,  B60G7/005 ,  B60G15/08 ,  B60G17/005 ,  B60G17/0152 ,  B60G17/016 ,  B60G17/048 ,  B60G17/056 ,  B60G17/08 ,  B60G2204/4604 ,  B60G2204/4605 ,  B60G2300/24 ,  B60G2400/05 ,  B60G2500/10 ,  B60Y2200/84 ,  F16F9/535 ,  Y10S180/907 ,  Y10S297/04

摘要： A suspension for a vehicle is provided. The suspension includes, for example, a frame and a releasable locking assembly. The releasable locking assembly has, for example, a first assembly movably coupled to the frame, a second assembly movably coupled to the frame, and wherein movement of the frame relative to the first and second assemblies causes the first and second assemblies to engage each other to limit further movement of the frame in at least a first direction.

摘要翻译： 提供了一种用于车辆的悬架。 悬架包括例如框架和可释放的锁定组件。 可释放的锁定组件具有例如可移动地联接到框架的第一组件，可移动地联接到框架的第二组件，并且其中框架相对于第一和第二组件的移动使得第一和第二组件彼此接合 以限制框架在至少第一方向上的进一步移动。

公开(公告)号：US5881096A

公开(公告)日：1999-03-09

申请号：US869583

申请日：1997-06-05

申请人： Bryan S. Majkrzak ,  John Bertrand ,  Marvin A. Epstein ,  Gary V. Blois ,  Joseph M. Fine

发明人： Bryan S. Majkrzak ,  John Bertrand ,  Marvin A. Epstein ,  Gary V. Blois ,  Joseph M. Fine

IPC分类号： H04B1/713 ,  H04B1/7156 ,  H04B15/00 ,  H04K1/00 ,  H04L27/30

CPC分类号： H04B1/7156 ,  H04B1/713

摘要： There is disclosed in a frequency hopping digital communications system having a transmitter for transmitting a data signal via a noisy transmission path, and a receiver responsive to the transmitted signal for receiving the same, a method for removing bias in the data signal at the receiver comprising the steps of: forming a sample amplitude histogram from the received data signal samples for a given hop frequency; correlating the amplitude histogram against a stored reference amplitude histogram to obtain a correlated output signal having a peak correlation position; determining the position difference between the peak correlation position and the correlation center position to provide an offset signal corresponding to the difference and indicative of an estimated bias offset value; and applying the estimated bias offset value to the received signal samples in response to the offset signal to obtain an output signal indicative of an unbiased received data signal.

摘要翻译： 已经公开了一种跳频数字通信系统，其具有经由噪声传输路径传输数据信号的发射机，以及响应于所发送的信号用于接收数据信号的接收机，用于消除接收机处的数据信号中的偏置的方法，包括 步骤：从给定跳频的接收数据信号采样中形成采样振幅直方图; 将幅度直方图与存储的参考幅度直方图相关联，以获得具有峰值相关位置的相关输出信号; 确定所述峰值相关位置和所述相关中心位置之间的位置差，以提供对应于所述差值并指示估计的偏移偏移值的偏移信号; 以及响应于所述偏移信号将所估计的偏置偏移值应用于所接收的信号样本，以获得指示无偏接收数据信号的输出信号。

公开(公告)号：US06188720B1

公开(公告)日：2001-02-13

申请号：US08437409

申请日：1995-05-12

申请人： John Batzer ,  John Bertrand ,  Charles Haight

发明人： John Batzer ,  John Bertrand ,  Charles Haight

IPC分类号： H04B138

CPC分类号： H04L5/16 ,  H04W4/12 ,  H04W4/18 ,  H04W92/02

摘要： The communication system has a first modem having a digital port for communicating a first data block in a first format between a first transmission channel and the digital port and a second modem having a digital port for communicating a second data block in a second format between a second transmission channel and the digital port. The first data block has a header block and a message block. The controller/processing device comprises a first interface means, a second interface means and a conversion means. The first interface means is adapted for receiving the first data block in the first format from the first digital port. The conversion means is coupled to the first interface means. The conversion means converts the first data block in the first format to the second data block in the second format. The second interface means is coupled to the conversion means. The second interface means is adapted for sending the second data block in the second format to the second digital port. The second interface means starts sending the second data block after said the interface means has received the header block and before it has received the message block.

摘要翻译： 通信系统具有第一调制解调器，具有用于在第一传输信道和数字端口之间以第一格式传送第一数据块的数字端口和具有数字端口的第二调制解调器，第二调制解调器具有以第二格式传送第二数据块的数字端口 第二传输通道和数字端口。 第一数据块具有报头块和消息块。 控制器/处理装置包括第一接口装置，第二接口装置和转换装置。 第一接口装置适于从第一数字端口接收第一格式的第一数据块。 转换装置耦合到第一接口装置。 转换装置将第一格式的第一数据块以第二格式转换为第二数据块。 第二接口装置耦合到转换装置。 第二接口装置适于将第二格式的第二数据块发送到第二数字端口。 第二接口装置在所述接口装置已经接收到报头块之后并且在接收到消息块之前开始发送第二数据块。

公开(公告)号：US4612625A

公开(公告)日：1986-09-16

申请号：US541050

申请日：1983-10-12

申请人： John Bertrand

发明人： John Bertrand

IPC分类号： H03H17/06 ,  G06F15/31

CPC分类号： H03H17/0275 ,  H03H17/0664

摘要： A decimator of the type having a decimation factor of K, is implemented by a finite impulse response (FIR) filter network of length N. The filter network includes N/K accumulators each of which arithmetically combines samples of an input signal as multiplied by a corresponding set of K network branches, and provides a corresponding output sample. The N/K output samples from the accumulators are provided sequentially at the filter output prior to arrival of the next set of N input signal samples at the filter input.

摘要翻译： 具有抽取因子K的类型的抽取器由长度为N的有限脉冲响应（FIR）滤波器网络来实现。滤波器网络包括N / K个累加器，每个累加器将输入信号的样本与乘以 相应的K个网络分支机构，并提供相应的输出样本。 来自累加器的N / K输出采样在滤波器输入端的下一组N个输入信号样本到达之前在滤波器输出处依次提供。

公开(公告)号：US6078612A

公开(公告)日：2000-06-20

申请号：US857990

申请日：1997-05-16

申请人： John Bertrand ,  Daniel M. Caprioni ,  Mitchell Friedman ,  Richard Alan Kwolek

发明人： John Bertrand ,  Daniel M. Caprioni ,  Mitchell Friedman ,  Richard Alan Kwolek

IPC分类号： H04B1/28 ,  H04B1/38 ,  H04B15/00

CPC分类号： H04B1/28 ,  H04B1/3888 ,  H04B15/00

摘要： There is disclosed an improved multi-mode, spread spectrum digital radio comprising: a radio frequency (RF) subsystem for converting spread spectrum digital signals comprising voice and data communications between baseband and RF signal frequencies in response to control signals; a digital signal processor based baseband subsystem having isolation interface means bidirectionally coupled to the RF subsystem for minimizing RF and baseband signal interference; the baseband subsystem operable to control the mode of operation, to provide interface control signals to the RF subsystem based on the mode, to format the transmitted and received digital signals, and to provide external controls and status to a user to enable selectable mode switching.

摘要翻译： 公开了一种改进的多模式扩频数字无线电，包括：射频（RF）子系统，用于响应于控制信号转换包括基带和RF信号频率之间的语音和数据通信的扩频数字信号; 基于数字信号处理器的基带子系统具有双向耦合到RF子系统的隔离接口装置，用于最小化RF和基带信号干扰; 基带子系统可操作以控制操作模式，以基于该模式向RF子系统提供接口控制信号，以格式化所发送和接收的数字信号，并向用户提供外部控制和状态以启用可选模式切换。

公开(公告)号：US5150410A

公开(公告)日：1992-09-22

申请号：US684688

申请日：1991-04-11

申请人： John Bertrand

发明人： John Bertrand

IPC分类号： G10L19/10 ,  G10L19/12 ,  H04K1/00 ,  H04M3/56

CPC分类号： G10L19/10 ,  G10L19/12 ,  H04K1/00 ,  H04M3/561 ,  H04M2203/609

摘要： A secure narrowband digital conferencing system is capable of handing multiple speakers simultaneously and in a full duplex mode. The system uses a multipulse or a code-excited linear predictive (CELP) speech processing algorithm for colding the speech signals of the respective participants. A conference director receives the multipluse or CELP encrypted voice signal streams over normal telephone links, decrypts them, then synthesizes a composite speech signal and uses an analysis-by-synthesis algorithm to compress them, and then encrypts the composite signal and transmits it back to all the participants.

摘要翻译： 一个安全的窄带数字会议系统能够同时处理多个扬声器和全双工模式。 该系统使用多脉冲或码激励线性预测（CELP）语音处理算法来对各个参与者的语音信号进行累加。 会议主管通过普通电话链路接收多重或CELP加密的语音信号流，对它们进行解密，然后合成一个合成语音信号，并使用综合分析算法进行压缩，然后对复合信号进行加密并传送回 所有参与者。

公开(公告)号：US4890327A

公开(公告)日：1989-12-26

申请号：US57474

申请日：1987-06-03

申请人： John Bertrand ,  Matthew J. Noah

发明人： John Bertrand ,  Matthew J. Noah

IPC分类号： G10L19/04 ,  G10L19/24

CPC分类号： G10L19/04 ,  G10L19/24

摘要： An analog to digital converter for a speech signal is implemented in modules to allow for changes in bit rate and changes in bit stream length according to requirements of the digital transmission system. A pre-emphasis circuit provides an array of pre-emphasized speech samples which are stored in memory. A linear predictive coder provides an array of reflection coefficients and an array of filter coefficients. A pulse processor receives the speech samples and filter coefficients and generates speech amplitude and location signals. These signals are multiplied to generate quantized speech samples. The quantized speech samples and reflection coefficients are provided to a buffer which provides an output signal of a proper bit stream length and bit rate for the digital transmission system.

摘要翻译： 用于语音信号的模数转换器在模块中实现，以允许根据数字传输系统的要求来改变比特率和比特流长度的变化。 预加重电路提供存储在存储器中的预先强调的语音样本阵列。 线性预测编码器提供反射系数阵列和滤波器系数阵列。 脉冲处理器接收语音样本和滤波系数，并产生语音幅度和位置信号。 这些信号被相乘以产生量化的语音样本。 将量化的语音样本和反射系数提供给缓冲器，该缓冲器为数字传输系统提供适当的比特流长度和比特率的输出信号。

公开(公告)号：US4321680A

公开(公告)日：1982-03-23

申请号：US142719

申请日：1980-04-22

申请人： John Bertrand ,  Joseph H. Flink ,  Daniel Shamah ,  Rodger H. Hosking

发明人： John Bertrand ,  Joseph H. Flink ,  Daniel Shamah ,  Rodger H. Hosking

IPC分类号： G06F17/00 ,  G06F17/14 ,  G06F15/31 ,  G01R23/16

CPC分类号： G06F17/141

摘要： A spectrum analyzer for FFT analyzing and displaying the frequency spectrum of a digital signal over a given frequency band (background), as well as over a more limited frequency band (foreground). The spectrum of the signal over each frequency band is calculated and displayed so as to appear on a screen as a simultaneous display. The position of the limited frequency band as well as the width thereof, may be varied.

摘要翻译： 用于FFT分析和显示给定频带（背景）上的数字信号的频谱以及更有限的频带（前景）的频谱分析仪。 计算并显示每个频带上的信号的频谱，以便作为同时显示出现在屏幕上。 有限频带的位置及其宽度可以变化。

公开(公告)号：US4093989A

公开(公告)日：1978-06-06

申请号：US747053

申请日：1976-12-03

申请人： Joseph H. Flink ,  John Bertrand

发明人： Joseph H. Flink ,  John Bertrand

IPC分类号： G01R23/167 ,  G06F15/34 ,  G01R23/16

CPC分类号： G01R23/167

摘要： A spectrum analyzer using digital filters for providing third octave spectrum analysis comprises means for breaking up input information into a plurality of digital data blocks, each block being of a given time duration and being within respective frequency ranges, means for weighting the information contained in the data blocks and means for digitally filtering the weighted digital data blocks with digital filtering devices having at least one center frequency falling within the frequency range represented by each of the data blocks, each of the data blocks comprising N samples satisfying the following equation- N >Kf.sub.o/ B.sub.n Where K is a constant which is a function of the sampling rate and the falloff rate of the skirt of filter characteristic, B.sub.n is the filter bandwidth and f.sub.o is the center frequency of the filter.

摘要翻译： 使用用于提供第三倍频程频谱分析的数字滤波器的频谱分析仪包括用于将输入信息分解成多个数字数据块的装置，每个块具有给定的持续时间并且在相应的频率范围内，用于对包含在 数据块和装置，用数字滤波装置数字滤波加权的数字数据块，数字滤波装置具有落在由每个数据块表示的频率范围内的至少一个中心频率，每个数据块包括满足以下等式的N个样本-N> Kfo / Bn其中K是一个常数，它是滤波器特性的裙边的采样率和衰减速率的函数，Bn是滤波器带宽，fo是滤波器的中心频率。