-
公开(公告)号：US08483720B2
公开(公告)日：2013-07-09
申请号：US12136861
申请日：2008-06-11
IPC分类号： H04W24/00
CPC分类号： G01S13/767 , G01S5/0252 , G01S5/0263 , G01S5/0289 , G01S5/14 , H04B1/7163 , H04W88/06
摘要： A system and method is provided for processing communication signals in a wireless personal area network (WPAN) using a transceiver comprising a first transmitter and a first receiver operable to transmit and receive signals using a first transmission protocol and a second transmitter operable to transmit signals using a second transmission protocol. In various embodiments, the first receiver is used to receive a first signal that was transmitted using the first communication protocol and the second transmitter is used to transmit a second signal using the second transmission protocol in response to receipt of the first signal. The second signal is then processed to determine the location of the object. In some embodiments, the first transmission protocol is compliant with an Institute of Electrical and Electronics Engineers 802.15.4 transmission protocol and the second transmission protocol is compliant with an Ultra-Wide Band (UWB) protocol.
摘要翻译： 提供了一种系统和方法，用于使用收发机处理无线个域网（WPAN）中的通信信号，所述收发器包括第一发射机和第一接收机，所述收发机可操作以使用第一传输协议来发射和接收信号;以及第二发射机，其可操作以使用 第二传输协议。 在各种实施例中，第一接收机用于接收使用第一通信协议传输的第一信号，并且第二发射机用于响应于接收到第一信号而使用第二传输协议传输第二信号。 然后处理第二个信号以确定对象的位置。 在一些实施例中，第一传输协议符合电气和电子工程师协会802.15.4传输协议，并且第二传输协议符合超宽带（UWB）协议。
-
2.发明申请High Speed Overlay Mode for Burst Data and Real Time Streaming (Audio) Applications 有权用于突发数据和实时流（音频）应用的高速覆盖模式公开(公告)号：US20110261801A1
公开(公告)日：2011-10-27
申请号：US13175453
申请日：2011-07-01
申请人： Clinton C. Powell , Kuor-Hsin Chang , Bing Xu
发明人： Clinton C. Powell , Kuor-Hsin Chang , Bing Xu
CPC分类号： H04W4/008 , H04B1/707 , H04L27/20 , H04L27/38 , H04W4/80 , H04W28/06 , H04W28/22 , H04W56/001 , H04W84/10
摘要： In a wireless 802.15.4 communication system (300), a high-speed data frame structure (340) is provided which uses the 802.15.4 SHR structure that is spread modulated to obtain the synchronization benefits of the 802.15.4 protocol, but which uses a modified data frame structure for the payload portion without using spreading to thereby improve its transmission efficiency. The transmission efficiency can be further increased by increasing the size of the data payload (and correspondingly, the frame length size).
摘要翻译： 在无线802.15.4通信系统（300）中，提供了高速数据帧结构（340），其使用被扩频调制的802.15.4 SHR结构来获得802.15.4协议的同步优点，但是哪个 对于有效载荷部分使用经修改的数据帧结构，而不使用扩展，从而提高其传输效率。 通过增加数据有效载荷的大小（相应地，帧长度大小），可以进一步提高传输效率。
-
3.发明授权Digitized automatic gain control system and methods for a controlled gain receiver 失效数字化自动增益控制系统和受控增益接收器的方法公开(公告)号：US06654594B1
公开(公告)日：2003-11-25
申请号：US09580770
申请日：2000-05-30
IPC分类号： H04B106
CPC分类号： H03G3/3089 , H03G3/001 , H04B17/318 , H04W52/52
摘要： An automatic gain control (AGC) system (100) for a controlled gain receiver (1101) includes a magnitude generator (160) and a gain corrector (170). The magnitude generator (160) generates a binary voltage squared signal (165) having a binary value that is directly proportional to a recovered signal power of an intercepted signal (113). The gain corrector (170) determines an adjustment of a gain control value (195) as a multiple of increments that are approximately 3 decibel (dB), by shifting (475, 445) a reference threshold by one or more bits and comparing (485, 455) the shifted reference threshold to the binary voltage squared signal. An initial setting of a state of a step attenuator (114) during a track mode (172) is determined during a warm up mode (171) by comparing the binary voltage squared signal (165) to two different thresholds (245, 255).
摘要翻译： 用于受控增益接收器（1101）的自动增益控制（AGC）系统（100）包括幅度发生器（160）和增益校正器（170）。 幅度发生器（160）产生二进制电压平方信号（165），二进制值与被截获信号（113）的恢复信号功率成正比。 增益校正器（170）通过将参考阈值移位（475,445）一个或多个比特并且比较（485（445）），将增益控制值（195）的调整确定为大约3分贝（dB）的增量的倍数 ，455）移位的参考阈值到二进制电压平方信号。 通过将二进制电压平方信号（165）与两个不同阈值（245,255）进行比较，在预热模式（171）期间，确定在轨道模式（172）期间阶梯衰减器（114）的状态的初始设置。
-
4.发明授权Method and apparatus for accurate synchronization using symbol decision feedback 失效使用符号决策反馈进行精确同步的方法和装置
公开(公告)号：US6130920A
公开(公告)日：2000-10-10
申请号：US76992
申请日：1998-05-13
申请人： Clinton C. Powell, II , Chun-Ye Chang , David L. Brown , David F. Brown , Robert Karl Schweickert
发明人： Clinton C. Powell, II , Chun-Ye Chang , David L. Brown , David F. Brown , Robert Karl Schweickert
CPC分类号： H04L7/0062 , H04L7/042
摘要： A circuit (12) for symbol decision directed feedback synchronization includes a current synchonization clock (45) that provides an initial sampling point and selects a detector corresponding to a current symbol decision. The circuit further includes a plurality of detectors (31, 32, 33, and 34) including the detector corresponding to the current symbol decision, a buffer (736) for storing the output of the detector corresponding to the current symbol decision and a processor (300) for seeking within a predetermined window about the initial sampling point for an optimum phase value to provide an adjustment signal which is used by the processor to adjust a subsequent symbol's sychronization clock to provide an optimal sampling point.
摘要翻译： 用于符号决定定向反馈同步的电路（12）包括提供初始采样点并选择对应于当前符号判定的检测器的当前同步时钟（45）。 电路还包括多个包括与当前符号决定相对应的检测器的检测器（31,32,33和34），用于存储与当前符号判定相对应的检测器的输出的缓冲器（736） 300），用于在关于初始采样点的预定窗口内寻找最佳相位值，以提供由处理器用于调整后续符号的同步时钟以提供最佳采样点的调整信号。
-
5.发明授权Symbol synchronizer based on eye pattern characteristics having variable adaptation rate and adjustable jitter control, and method therefor 失效基于具有可变自适应速率和可调节抖动控制的眼图特征的符号同步器及其方法
公开(公告)号：US6084931A
公开(公告)日：2000-07-04
申请号：US962267
申请日：1997-10-31
CPC分类号： H04L7/0334 , H04L7/007
摘要： A symbol synchronizer (10) for use in a communication device. The symbol synchronizer (10) comprises a sampling circuit (100) which samples the demodulated signal at a plurality of sampling events for each symbol period to generate three sample values at each sampling event. An eye pattern detector circuit (200) generates eye pattern characteristic information based on the three sample values, and outputs a symbol pulse in response to detecting eye pattern characteristic information consistent with a symbol center. A synchronization noise mask circuit (400) filters symbol pulses that occur during a predetermined period of time after a first symbol pulse is detected for each symbol period. A synchronization adjust circuit (500) generates a synchronization pulse during each symbol period at a particular instant of time during the symbol period based on a history of the occurrences of symbol pulses for a current symbol period and for prior symbol periods.
摘要翻译： 一种用于通信设备的符号同步器（10）。 符号同步器（10）包括采样电路（100），其对于每个符号周期的多个采样事件对解调信号进行采样，以在每个采样事件处产生三个采样值。 眼图检测器电路（200）基于三个采样值产生眼图特征信息，并且响应于与符号中心一致的检测眼图特征信息而输出符号脉冲。 同步噪声屏蔽电路（400）对每个符号周期检测到第一个符号脉冲之后的预定时间段内的符号脉冲进行滤波。 同步调整电路（500）在符号周期内的特定时刻的每个符号周期期间，基于当前符号周期的符号脉冲的历史和先前的符号周期来生成同步脉冲。
-
公开(公告)号：US5710975A
公开(公告)日：1998-01-20
申请号：US578755
申请日：1995-12-26
CPC分类号： H04W84/025 , H04W88/022 , Y02B60/50
摘要： A battery-powered selective call transceiver, operating in two-way communication with an RF communication system, can be put in a power saving state. A user control on the transceiver allows a user to select the duration of a power saving interval. The transceiver sends to the communication system a signal requesting that the transceiver enter a power saving state for the selected interval. Upon receipt of an acknowledgment signal from the system, the transceiver enters the power saving state.
摘要翻译： 可以将与RF通信系统进行双向通信操作的电池供电的选择性呼叫收发器置于省电状态。 收发器上的用户控制允许用户选择节电间隔的持续时间。 收发器向通信系统发送请求收发器在所选间隔内进入省电状态的信号。 收到来自系统的确认信号后，收发器进入省电状态。
-
7.发明授权
公开(公告)号：US5673197A
公开(公告)日：1997-09-30
申请号：US495857
申请日：1995-06-28
CPC分类号： H04L25/062
摘要： An apparatus and method for updating upper and lower thresholds in peak and valley systems. The apparatus includes comparators which determine which peaks or valleys are eligible for use in the calculation of upper or lower threshold levels. The comparators output the eligible peaks and valleys into statistical blocks that calculate the mean of the peaks and valleys as well as the deviation over a predetermined number of samples. Additional comparators compare either the mean deviation, standard deviation, or variance of the eligible peaks and valleys to predetermined deviation thresholds to determine whether the mean peak or mean valley should be used to calculate update thresholds. The apparatus further includes memory elements that store the mean peak or mean valley values used in the calculation of upper or lower thresholds.
摘要翻译： 一种用于更新峰谷系统中上限和下限阈值的装置和方法。 该装置包括比较器，其确定哪些峰或谷有资格用于计算上限或下限阈值水平。 比较器将合格的峰和谷输出到计算峰和谷的平均值以及预定数量样本的偏差的统计块中。 额外的比较器可将平均偏差，标准偏差或符合条件的峰谷的方差与预定的偏差阈值进行比较，以确定平均峰值还是平均谷值应用于计算更新阈值。 该装置还包括存储元件，其存储在计算上限或下限阈值时使用的平均峰值或平均谷值。
-
公开(公告)号：US5309480A
公开(公告)日：1994-05-03
申请号：US70486
申请日：1993-06-02
IPC分类号： H04L27/233 , H04L27/14
CPC分类号： H04L27/2332
摘要： Briefly, according to the invention, a receiver (100) for receiving a carrier signal MSK (minimum shift keying) modulated with a bit stream of a digital information signal (302) is disclosed. The receiver (100) comprises a quadrature demodulator (128) for providing baseband quadrature demodulated signals (306 and 308). The quadrature demodulated (128) is coupled to an EXOR (126) for providing a decoded bit stream of the digital information signal (312) thereby avoiding complex decoder circuits. The quadrature demodulator (128) includes a pair of mixers (106 and 108) for quadrature mixing the received carrier signal and a pair of filters (114 and 118) for filtering the outputs of the mixers (106 and 108). The filters (114 and 118) are coupled to a pair of limiters (116 and 120) for limiting the filtered signals.
摘要翻译： 简而言之，根据本发明，公开了一种用于接收用数字信息信号（302）的比特流调制的载波信号MSK（最小移位键控）的接收机（100）。 接收器（100）包括用于提供基带正交解调信号（306和308）的正交解调器（128）。 正交解调（128）耦合到EXOR（126），用于提供数字信息信号（312）的解码比特流，从而避免复杂的解码器电路。 正交解调器（128）包括用于正交混合接收的载波信号的一对混频器（106和108）和用于对混频器（106和108）的输出进行滤波的一对滤波器（114和118）。 滤波器（114和118）耦合到一对限制器（116和120），用于限制经滤波的信号。
-
9.发明授权Initiation of high speed overlay mode for burst data and real time streaming (audio) applications 有权启动突发数据和实时流（音频）应用的高速覆盖模式公开(公告)号：US07990937B2
公开(公告)日：2011-08-02
申请号：US11935023
申请日：2007-11-05
CPC分类号： H04L1/0023 , H04L25/0262
摘要： In a wireless 802.15.4 communication system, a method and system are provided for switching between a predetermined protocol transmission mode and a high-speed transmission mode by including signaling mode information in a data packet (330, 340) to instruct the receiver device (300) to demodulate at least a data payload using the predetermined transmission mode if the signaling mode information comprises a first predetermined value, and to demodulate at least the data payload using the high-speed transmission mode if the signaling mode information comprises a second predetermined value. The signaling mode information may be included in the SFD field of an 802.15.4 SHR structure to instruct the receiver how to demodulate or process the data packet, or may be included as desired anywhere in the data packet to instruct the receiver how to demodulate or process one or more subsequent data packets.
摘要翻译： 在无线802.15.4通信系统中，提供了一种方法和系统，用于通过在数据分组（330,340）中包括信令模式信息来在预定协议传输模式和高速传输模式之间切换以指示接收机设备 300）如果所述信令模式信息包括第一预定值，则使用所述预定传输模式来解调至少一个数据有效载荷，并且如果所述信令模式信息包括第二预定值，则使用所述高速传输模式至少解调所述数据有效载荷 。 信令模式信息可以包括在802.15.4 SHR结构的SFD字段中，以指示接收机如何解调或处理数据分组，或者可以根据需要在数据分组中随时包括以指示接收机如何解调或 处理一个或多个后续数据包。
-
公开(公告)号：US20090311960A1
公开(公告)日：2009-12-17
申请号：US12136861
申请日：2008-06-11
CPC分类号： G01S13/767 , G01S5/0252 , G01S5/0263 , G01S5/0289 , G01S5/14 , H04B1/7163 , H04W88/06
摘要： A system and method is provided for processing communication signals in a wireless personal area network (WPAN) using a transceiver comprising a first transmitter and a first receiver operable to transmit and receive signals using a first transmission protocol and a second transmitter operable to transmit signals using a second transmission protocol. In various embodiments, the first receiver is used to receive a first signal that was transmitted using the first communication protocol and the second transmitter is used to transmit a second signal using the second transmission protocol in response to receipt of the first signal. The second signal is then processed to determine the location of the object. In some embodiments, the first transmission protocol is compliant with an Institute of Electrical and Electronics Engineers 802.15.4 transmission protocol and the second transmission protocol is compliant with an Ultra-Wide Band (UWB) protocol.
摘要翻译： 提供了一种系统和方法，用于使用收发机处理无线个域网（WPAN）中的通信信号，所述收发器包括第一发射机和第一接收机，所述收发机可操作以使用第一传输协议来发射和接收信号;以及第二发射机，其可操作以使用 第二传输协议。 在各种实施例中，第一接收机用于接收使用第一通信协议传输的第一信号，并且第二发射机用于响应于接收到第一信号而使用第二传输协议传输第二信号。 然后处理第二个信号以确定对象的位置。 在一些实施例中，第一传输协议符合电气和电子工程师协会802.15.4传输协议，并且第二传输协议符合超宽带（UWB）协议。
-
-
-
-
-
-
-
-
-
搜索结果
40 条记录 (耗时 0.017 秒)
