公开(公告)号：US20110103501A1

公开(公告)日：2011-05-05

申请号：US12940777

申请日：2010-11-05

申请人： MOHAMMAD A. KHOJASTEPOUR ,  Sampath Rangarajan

发明人： MOHAMMAD A. KHOJASTEPOUR ,  Sampath Rangarajan

IPC分类号： H04L27/28

CPC分类号： H04L27/28 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0094 ,  H04L27/30

摘要： Methods and systems for indexing signal option selections are disclosed. The signal options can be any of a variety of options that permit the establishment of a communication link, including modulation format, coding rate, precoding index and assigned subbands. The selected options can be represented as a vector and the index can be determined by employing a worth function for a particular selected vector element that is dependent on a selection occurrence count of the element and on an element position count of the element. In particular, the index can be the summation of worth function values for each selected element.

摘要翻译： 公开了索引信号选项选择的方法和系统。 信号选项可以是允许建立通信链路的各种选项中的任一种，包括调制格式，编码率，预编码索引和分配的子带。 所选择的选项可以被表示为向量，并且可以通过对依赖于元素的选择发生次数和元素的元素位置计数的特定选定向量元素采用值函数来确定索引。 特别地，索引可以是每个选定元素的值函数值的总和。

公开(公告)号：US20080219292A1

公开(公告)日：2008-09-11

申请号：US12088689

申请日：2006-09-28

申请人： Yibing Wang

发明人： Yibing Wang

IPC分类号： H04J1/00

CPC分类号： H04L5/06 ,  H04L27/30 ,  H04L49/10

摘要： A system of frequency allocation for a user access local area network, and uplink and downlink transmission methods thereof are provided. The system of frequency allocation for a user access local area network comprises: an information processing apparatus, a switch, a plurality of first modulators, a broadband high frequency synthesizer, a downlink amplifier, a plurality of trunk splitters, a plurality of branch splitters, a plurality of user terminal digital high frequency demodulators, a plurality of user terminal modulators, a plurality of trunk mixers, a plurality of branch mixers, an uplink amplifier, a broadband high frequency allocator and a plurality of first demodulators. The present invention uses a new communication resource configuration technology with high transparency in which every user is provided with his dedicated communication channel regardless of its busy/idle status. In addition, the present invention adopts a new physical layout construction of the user access LAN with a high frequency broadband, a high speed, and a large capacity in which passive operations without relay amplification can be achieved in the main trunk. Therefore, the seamless communication resource utilization is achieved, and the operation and communication service technology is provided which is suitable to the operation custom of the public so as to be easily learned and propagation.

摘要翻译： 提供了一种用于用户接入局域网的频率分配系统及其上行链路和下行链路传输方法。 用户接入局域网的频率分配系统包括：信息处理装置，交换机，多个第一调制器，宽带高频合成器，下行放大器，多个中继分路器，多个分支分路器， 多个用户终端数字高频解调器，多个用户终端调制器，多个中继混频器，多个分支混频器，上行放大器，宽带高频分配器和多个第一解调器。 本发明使用具有高透明度的新的通信资源配置技术，其中每个用户被提供有他的专用通信信道，而不管其忙/闲状态如何。 此外，本发明采用高频宽带，高速，大容量的用户接入局域网的物理布局结构，在主干中可以实现无中继放大的被动操作。 因此，实现了无缝通信资源利用，提供了适合于公众的操作习惯的操作和通信服务技术，以便容易地学习和传播。

公开(公告)号：US20080205488A1

公开(公告)日：2008-08-28

申请号：US11576810

申请日：2005-09-26

申请人： Derk Reefman ,  Raf Lodewijk Jan Roovers

发明人： Derk Reefman ,  Raf Lodewijk Jan Roovers

IPC分类号： H04B1/69

CPC分类号： H04B1/7174 ,  H04B1/71637 ,  H04L27/2602 ,  H04L27/30

摘要： In a wireless communications system, such as a multiband Ultra Wideband communications system, data is tranmitted by means of the phases of pulses in multiple frequency bands. Data is encoded in the phase difference between a pulse and a previously transmitted pulse. The previously transmitted pulse may be the immediately preceding pulse in the same frequency band, or may be separated from the present pulse by a number of intervening pulses.

摘要翻译： 在诸如多频带超宽带通信系统的无线通信系统中，通过多个频带中的脉冲的相位来传送数据。 数据以脉冲和先前传输的脉冲之间的相位差进行编码。 先前发送的脉冲可以是相同频带中的紧邻在前的脉冲，或者可以通过多个中间脉冲与当前脉冲分离。

公开(公告)号：US07224713B2

公开(公告)日：2007-05-29

申请号：US09741411

申请日：2000-12-20

申请人： Andrzej Partyka

发明人： Andrzej Partyka

IPC分类号： H04B1/00

CPC分类号： H04B1/7156 ,  H04B2001/71367 ,  H04B2001/71566 ,  H04K1/00 ,  H04K3/25 ,  H04K3/65 ,  H04K3/827 ,  H04K3/88 ,  H04L27/30

摘要： A telemetry system includes many radio transmitters using frequency hopping carriers to intermittently transmit transmissions indicative of status of sensors associated with the transmitters. The transmitters transmit transmissions independently of a receiver receiving the transmissions and independently of each other. The carrier frequency and the time between transmissions are changed according to a frequency-time hopping sequence that is different for each transmitter. The sequences and the resulting frequency ad time hopping are predictable and can be reproduced in the receiver based on the transmitter ID number. The system also includes one or more receivers containing a plurality of memory registers to hold, simultaneously for each transmitter, digital data indicative of (a) expected time and (b) expected frequency of the next transmission occurrence. The data is updated based on the time and the content of the received transmissions. The receiver authenticates the received transmissions by discriminating transmissions received at a wrong frequency and time. In addition, each transmitter encrypts the transmission using a variable encryption key that is varied with each transmission. The key variations are based on the frequency and time hopping sequence and are different for each transmitter. Alternatively, prior to encryption, each transmitter modifies data for transmission, using a modifier that is varied based on the frequency and time hopping sequence that is different for each transmitter. In addition, for faster acquisition and robust operation, the receiver includes and RSSI circuit based on FFT to detect transmitted carrier power at several different frequencies. The receiver also includes one or more frequency selective circuits that are tuned in response to the outputs from FFT and the status of the time and frequency registers.

摘要翻译： 遥测系统包括许多使用跳频载波的无线电发射机间歇地发送指示与发射机相关联的传感器的状态的传输。 发射机独立于接收传输并且彼此独立的接收机发射传输。 载波频率和传输之间的时间根据每个发射机不同的频率 - 时间跳频序列而改变。 序列和产生的频率ad时间跳跃是可预测的，并且可以基于发射机ID号在接收机中再现。 该系统还包括一个或多个接收器，其包含多个存储器寄存器，用于同时为每个发射器保持指示（a）预期时间和（b）下一个发送发生的预期频率的数字数据。 基于所接收的传输的时间和内容更新数据。 接收机通过区分以错误的频率和时间接收的传输来认证所接收的传输。 此外，每个发射机使用随每个传输变化的可变加密密钥来加密传输。 关键的变化是基于频率和时间跳跃序列，并且对于每个发射机是不同的。 或者，在加密之前，每个发射机使用基于每个发射机不同的频率和时间跳频序列而改变的修改器来修改用于传输的数据。 此外，为了更快的采集和鲁棒的操作，接收机包括基于FFT的RSSI电路，以检测几个不同频率的发射载波功率。 接收机还包括响应于FFT的输出和时间和频率寄存器的状态而被调谐的一个或多个频率选择电路。

公开(公告)号：US20060245482A1

公开(公告)日：2006-11-02

申请号：US10546945

申请日：2004-02-23

申请人： Dagnachew Birru

发明人： Dagnachew Birru

IPC分类号： H04L5/16

CPC分类号： H04B1/7176 ,  H04B1/71635 ,  H04B1/71637 ,  H04B14/026 ,  H04L27/28 ,  H04L27/30

摘要： A system and method for transmission and receipt of multi-band communication according to their time slot sequence includes at a transmitting end: an encoder for encoding data according to a time slot position (s1, s2, s3, s4) for each frequency band; an RF modulator for modulating encoded data over a predetermined plurality of frequency bands (f4, f3, f2, f1) selected from a plurality of frequency bands (f1, fn). The predetermined plurality of frequency bands are independent of each other and an order of transmission of the predetermined plurality of frequency bands being irrelevant, unlike the dependency in spectral keying. The present invention frees up the order of the frequency bands being transmitted, so that they can be used for channelization, security or other purposes and requires less complicated circuitry at the receiver end.

摘要翻译： 根据其时隙序列的多频带通信的发送和接收的系统和方法包括：发送端：用于根据时隙位置（s 1，s 2，s 3，s 4）对数据进行编码的编码器，用于 每个频带; 用于调制从多个频带（f 1，f n）中选择的预定多个频带（f 4，f 3，f 2，f 1）上的编码数据的RF调制器。 与频谱键控的依赖性不同，预定的多个频带彼此独立，并且预定的多个频带的传输顺序是不相关的。 本发明释放了被发送的频带的顺序，使得它们可以用于信道化，安全性或其他目的，并且在接收机端需要较不复杂的电路。

公开(公告)号：US20060222179A1

公开(公告)日：2006-10-05

申请号：US11267716

申请日：2005-11-04

申请人： James Jensen ,  Wendell Lynch ,  Michael Perelshteyn ,  Robert Graybill ,  Sayed Hassan ,  Wayne Sabin

发明人： James Jensen ,  Wendell Lynch ,  Michael Perelshteyn ,  Robert Graybill ,  Sayed Hassan ,  Wayne Sabin

IPC分类号： H04K1/02

CPC分类号： H04H20/31 ,  H04H20/14 ,  H04H60/13 ,  H04H60/17 ,  H04H60/37 ,  H04H60/40 ,  H04H60/44 ,  H04H60/45 ,  H04H60/58 ,  H04H60/63 ,  H04H60/66 ,  H04K1/02 ,  H04L27/10 ,  H04L27/30

摘要： Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code frequency component to human hearing are evaluated and based on these evaluations an amplitude is assigned to the code frequency component. Methods and apparatus for detecting a code in an encoded audio signal are also provided. A code frequency component in the encoded audio signal is detected based on an expected code amplitude or on a noise amplitude within a range of audio frequencies including the frequency of the code component.

公开(公告)号：US06731745B1

公开(公告)日：2004-05-04

申请号：US09422062

申请日：1999-10-21

申请人： Koji Goto

发明人： Koji Goto

IPC分类号： H04M300

CPC分类号： H04L27/30

摘要： A frequency deviation detecting apparatus for detecting frequency deviation of a dual tone multiple frequency (DTMF) signal includes frequency deviation analyzers for analyzing a received signal for frequency components proximate fixed frequencies in analytical blocks, each analytical block having a length that ensures the precision required for detecting the frequency deviation. Each of the analytical blocks of the deviation analyzers partially overlays an adjacent block so that analysis by at least one analytical block is ensured within a minimum duration of a DTMF signal.

摘要翻译： 用于检测双音多频（DTMF）信号的频偏的频偏检测装置包括用于分析分析块中接近固定频率的频率分量的接收信号的频偏分析器，每个分析块具有确保所需精度所需的精度的长度 检测频率偏差。 偏差分析器的每个分析块部分地覆盖相邻块，使得在DTMF信号的最小持续时间内确保至少一个分析块的分析。

公开(公告)号：US20040019489A1

公开(公告)日：2004-01-29

申请号：US10205665

申请日：2002-07-24

发明人： Karsten Funk ,  Sharmila Ravula ,  Madhuri Raya ,  Yao Meng

IPC分类号： G10L021/00

CPC分类号： H04L12/2818 ,  H04L12/2803 ,  H04L27/30 ,  H04L2012/2845 ,  H04M3/50 ,  H04M7/1235 ,  H04M7/129 ,  H04M7/1295 ,  H04M11/007 ,  H04M11/08 ,  H04M2201/40

摘要： A method and system for controlling a home automation system by voice input provided via a telephone unit. A voice portal server receives a signal transmitted by the telephone unit, processes the signal to interpret the voice input, and generates command signals for controlling a home device in the home automation system based on the interpreted voice input. The voice portal server transmits the command signals over a data network or a telephone network to a home interface for receiving the command signals transmitted by the voice portal server. The home interface controls the home device in accordance with the received command signals.

摘要翻译： 一种通过经由电话单元提供的语音输入来控制家庭自动化系统的方法和系统。 语音门户服务器接收由电话单元发送的信号，处理信号以解释语音输入，并且基于解释的语音输入生成用于控制家庭自动化系统中的家庭设备的命令信号。 语音门户服务器通过数据网络或电话网络将命令信号发送到家庭接口，用于接收语音门户服务器发送的命令信号。 家庭接口根据接收到的命令信号控制家庭设备。

公开(公告)号：US06665350B1

公开(公告)日：2003-12-16

申请号：US09160484

申请日：1998-09-25

申请人： John G. Bartkowiak

发明人： John G. Bartkowiak

IPC分类号： H04L2710

CPC分类号： H04L27/30 ,  H04L27/0012

摘要： A method and system for improved detection of analog signals, where the analog signals may be composed of one or more analog frequencies. In the method and system, an analog signal is received. A stream of data samples is created from the analog signal. Based on the stream of data samples, a confidence factor regarding the presence of the one or more analog signals is created. The confidence factor is created based upon a confidence factor calculated for each of the one or more analog frequency signals. The confidence factor calculated for each of the one or more analog frequency signals is calculated utilizing incremental energies associated with each of the one or more analog frequency signals.

摘要翻译： 一种用于改进模拟信号检测的方法和系统，其中模拟信号可以由一个或多个模拟频率组成。 在该方法和系统中，接收模拟信号。 从模拟信号创建数据采样流。 基于数据样本流，产生关于一个或多个模拟信号的存在的置信因子。 基于为一个或多个模拟频率信号中的每一个计算的置信因子创建置信因子。 使用与一个或多个模拟频率信号中的每一个相关联的增量能量来计算针对一个或多个模拟频率信号中的每一个计算的置信因子。

公开(公告)号：US20030081781A1

公开(公告)日：2003-05-01

申请号：US10194152

申请日：2002-07-12

发明人： James M. Jensen ,  Wendell D. Lynch ,  Michael M. Perelshteyn ,  Robert B. Graybill ,  Sayed Hassan ,  Wayne Sabin

IPC分类号： H04K001/02

CPC分类号： H04H20/31 ,  H04H20/14 ,  H04H60/13 ,  H04H60/17 ,  H04H60/37 ,  H04H60/40 ,  H04H60/44 ,  H04H60/45 ,  H04H60/58 ,  H04H60/63 ,  H04H60/66 ,  H04K1/02 ,  H04L27/10 ,  H04L27/30

摘要： Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code frequency component to human hearing are evaluated and based on these evaluations an amplitude is assigned to the code frequency component. Methods and apparatus for detecting a code in an encoded audio signal are also provided. A code frequency component in the encoded audio signal is detected based on an expected code amplitude or on a noise amplitude within a range of audio frequencies including the frequency of the code component.