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1. 发明授权

US5355114A Reconstruction of signals using redundant channels 失效
标题翻译：使用冗余通道重建信号
公开(公告)号：US5355114A
公开(公告)日：1994-10-11
申请号：US210065
申请日：1994-03-16
申请人： Philip H. Sutterlin , Howard W. Johnson , Chin-Chen Lee , Amy O. Hurlbut
发明人： Philip H. Sutterlin , Howard W. Johnson , Chin-Chen Lee , Amy O. Hurlbut
IPC分类号： H04B1/74 , H04B3/54 , H04L1/04 , H04M11/04
CPC分类号： H04B1/74 , H04B3/542 , H04L1/04 , H04B2203/5408 , H04B2203/5416 , H04B2203/5425 , H04B2203/5483 , H04B2203/5491 , H04B2203/5495
摘要： In a power line communication apparatus, data is redundantly transmitted on a first and a second carrier where the carriers are separated by a predetermined number of Hz. In the receiver two channels are used, one for each of the carriers. The noise level in each channel is independently determined. A switching network is used to allow the selection of the channel with the lesser noise or if the noise is approximately equal in both channels, the signals in the channels are combined.
摘要翻译：在电力线通信装置中，数据在第一和第二载波上被冗余地发送，其中载波被隔开预定数量的Hz。在接收机中使用两个通道，每个载波一个。每个通道的噪声电平是独立确定的。交换网络用于允许以更小的噪声选择信道，或者如果两个信道中的噪声近似相等，则信道中的信号被组合。

2. 发明授权

US5260974A Adaptive carrier detection 失效
标题翻译：自适应载波检测
公开(公告)号：US5260974A
公开(公告)日：1993-11-09
申请号：US698408
申请日：1991-05-10
申请人： Howard W. Johnson , Chin-Chen Lee , Amy O. Hurlbut
发明人： Howard W. Johnson , Chin-Chen Lee , Amy O. Hurlbut
IPC分类号： H04B1/10 , H04L25/06 , H03D1/04
CPC分类号： H04L25/062 , H04B1/1027 , H04B3/542 , H04B2203/5408 , H04B2203/5416 , H04B2203/5425 , H04B2203/5445 , H04B2203/5483 , H04B2203/5491 , H04B2203/5495
摘要： An improvement in an apparatus which uses a carrier detection threshold level for detecting a carrier signal modulated with binary data. The threshold level is dynamically changed and generally seeks a level above the background noise. The threshold level is maintained constant when the detected signal exceeds the threshold level. An evaluation circuit is able to examine the detected signal to determine whether it contains data or only noise, and if it contains only noise, a possible trapped condition is avoided by raising the threshold level to a level higher than the background noise.
摘要翻译：使用载波检测阈值电平检测用二进制数据调制的载波信号的装置的改进。阈值水平被动态地改变，并且通常寻求高于背景噪声的水平。当检测到的信号超过阈值电平时，阈值电平保持恒定。评估电路能够检查检测到的信号以确定其是否包含数据或仅包含噪声，并且如果它仅包含噪声，则可以通过将阈值电平提高到高于背景噪声的水平来避免可能的捕获状态。

3. 发明授权

US5210518A Apparatus and method for reducing errors in data caused by noise 失效
标题翻译：用于减少由噪声引起的数据中的错误的装置和方法
公开(公告)号：US5210518A
公开(公告)日：1993-05-11
申请号：US698600
申请日：1991-05-10
申请人： Martin H. Graham , Howard W. Johnson , Philip H. Sutterlin , Chin-Chen Lee , Amy O. Hurlbut
发明人： Martin H. Graham , Howard W. Johnson , Philip H. Sutterlin , Chin-Chen Lee , Amy O. Hurlbut
IPC分类号： H03G3/34 , H04B3/54
CPC分类号： H04B3/542 , H03G3/345 , H04B2203/5408 , H04B2203/5416 , H04B2203/5425 , H04B2203/5445 , H04B2203/5483 , H04B2203/5491 , H04B2203/5495
摘要： In a power line communications apparatus an improvement for blanking or snubbing impulse noise. The impulse noise is detected and used to snub the detected signal. The duration of the snubbing pulses is controlled to assure complete blanking of noise including the trailing noise signals following a main noise pulse which may not otherwise be detectable. Also, the number of snubbing pulses which can occur are limited to prevent too much energy from being snubbed during any given baud period.
摘要翻译：在电力线通信装置中，消隐或缓冲脉冲噪声的改进。脉冲噪声被检测并用于缓冲检测到的信号。控制缓冲脉冲的持续时间以确保完全消隐噪声，包括主噪声脉冲之后的后续噪声信号，否则可能无法检测到。此外，可以发生的缓冲脉冲的数量被限制以防止在任何给定的波特周期期间太多的能量被阻塞。

4. 发明授权

US5289476A Transmission mode detection in a modulated communication system 失效
标题翻译：调制通信系统中的传输模式检测
公开(公告)号：US5289476A
公开(公告)日：1994-02-22
申请号：US698445
申请日：1991-05-10
申请人： Howard W. Johnson , Chin-Chen Lee , Amy O. Hurlbut
发明人： Howard W. Johnson , Chin-Chen Lee , Amy O. Hurlbut
IPC分类号： H04B3/54 , H04L1/00 , H04L27/00 , C06F11/10 , H03D3/22 , H04L27/20
CPC分类号： H04L1/0039 , H04B3/542 , H04L1/0003 , H04L1/0025 , H04L1/0029 , H04L1/0072 , H04L27/0012 , H04B2203/5408 , H04B2203/5416 , H04B2203/5445 , H04B2203/5483 , H04L1/0057
摘要： A power line communication (PLC) apparatus wherein transmission mode information is encoded into each data packet while maintaining immunity from single bit errors. In the present invention, a power line communication system includes a transmitter/receiver (i.e. transceiver) which is coupled to a power distribution network. Data is transmitted through the power line by the transceiver in packets. The transceiver includes a preamble generator which creates a preamble for each of the data packets and a preamble decoder that decodes the preamble of a data packet and determines word sync for the packet. The preamble generated by the preamble generator consists of a carrier detect interval, a carrier sync interval, a bit sync interval, and a word sync pattern. The transceiver may select either BPSK or QPSK transmission modes on a data packet by data packet basis by encoding information into the packet preamble. Transmission mode information is encoded into the preamble using one of two seven-bit cross compatible word sync patterns for each data packet. Thus, one word sync pattern is used to define a BPSK transmission while the other word sync pattern is used to define a QPSK transmission. The transmitter may send data packets using either BPSK or QPSK on a packet by packet basis by generating the appropriate word sync pattern for each packet. The receiver uses the word sync pattern to determine the receive mode for each packet.
摘要翻译：一种电力线通信（PLC）装置，其中传输模式信息被编码到每个数据包中，同时保持对单个位错误的抵抗。在本发明中，电力线通信系统包括耦合到配电网络的发射机/接收机（即，收发机）。数据通过收发器在数据包中通过电力线传输。收发器包括前导码生成器，其为每个数据分组创建前同步码，以及解码数据分组的前同步码并确定该分组的单词同步的前导解码器。由前导码生成器产生的前导码由载波检测间隔，载波同步间隔，位同步间隔和字同步模式组成。收发器可以通过数据分组来选择数据分组上的BPSK或QPSK传输模式，通过将信息编码到分组前同步码中。使用针对每个数据分组的两个七位交叉兼容字同步模式之一将传输模式信息编码到前导码中。因此，一个字同步模式用于定义BPSK传输，而另一个字同步模式用于定义QPSK传输。发送器可以通过基于分组的方式使用BPSK或QPSK来发送数据分组，通过为每个分组生成适当的字同步模式。接收机使用字同步模式来确定每个数据包的接收模式。

5. 发明授权

US5195098A Binary data error correction using hint signal 失效
标题翻译：使用提示信号的二进制数据错误校正
公开(公告)号：US5195098A
公开(公告)日：1993-03-16
申请号：US698602
申请日：1991-05-10
申请人： Howard W. Johnson , Philip H. Sutterlin , Amy O. Hurlbut
发明人： Howard W. Johnson , Philip H. Sutterlin , Amy O. Hurlbut
IPC分类号： G06F11/10 , H03M13/00 , H03M13/15 , H03M13/25 , H04B3/54 , H04L1/00 , H04L27/18
CPC分类号： H04L1/0057 , G06F11/10 , H03M13/00 , H03M13/098 , H03M13/151 , H03M13/19 , H03M13/25 , H03M13/251 , H04B3/542 , H04L1/22 , H04B2203/5408 , H04B2203/5416 , H04B2203/5425 , H04B2203/5445 , H04B2203/5483 , H04B2203/5491 , H04B2203/5495
摘要： An error detection and correction method and apparatus is described which permits the correction of double errors using a (15,11) Hamming code and a parity bit. The Hamming code and parity bit allows the detection of double errors. A modulated waveform carrying the binary data is examined for anomalies such as noise pulses. A hint signal is generated based on the anomalies which points to a suspect bit. The state of this bit is changed to correct for double errors.
摘要翻译：描述了允许使用（15,11）汉明码和奇偶校验位来校正双误差的错误检测和校正方法和装置。汉明码和奇偶校验位允许检测双重错误。检查携带二进制数据的调制波形，例如噪声脉冲等异常。基于指向可疑位的异常产生提示信号。该位的状态被更改以纠正双重错误。

6. 发明授权

US5289498A Adaptive data recovery for spread spectrum systems 失效
标题翻译：扩频系统的自适应数据恢复
公开(公告)号：US5289498A
公开(公告)日：1994-02-22
申请号：US942580
申请日：1992-09-09
申请人： Amy O. Hurlbut , Philip H. Sutterlin
发明人： Amy O. Hurlbut , Philip H. Sutterlin
IPC分类号： H04K1/04 , H04B1/707 , H04B3/54 , H04L7/00 , H04Q9/00 , H04L27/30
CPC分类号： H04B3/54 , H04B1/707 , H04B2203/5408 , H04B2203/5416
摘要： A method and means for for recovering data in a spread spectrum communications system. The present invention includes a method and means for providing a sync window time period. The sync window is set to encompass the correlation values which are generated one baud time from the previous recovered data bit. The present invention also determines the peak correlation value within the sync window and the location in time within the sync window that the peak correlation value occurs. The present invention also provides a polarity window time period. The polarity window occurs during the sync window. The present invention decodes the data according to the direction of the peak correlation and whether the peak occurred within the polarity window. The sync and polarity windows are then set to occur, such that the peak correlation of the next baud falls within the next instance of the sync window. In this way, data can be recovered continuously.
摘要翻译：一种用于在扩频通信系统中恢复数据的方法和装置。本发明包括用于提供同步窗口时间段的方法和装置。同步窗口被设置为包含从先前恢复的数据位产生一个波特时间的相关值。本发明还确定同步窗口内的峰值相关值和同步窗口内的时间位置，发生峰值相关值。本发明还提供极性窗口时间段。极性窗口在同步窗口中发生。本发明根据峰值相关的方向解码数据，以及是否在极性窗口内发生峰值。然后将同步和极性窗口设置为发生，使得下一波特率的峰值相关性落入同步窗口的下一个实例中。这样可以连续地恢复数据。

7. 发明授权

US5812557A Power line communications analyzer 失效
标题翻译：电力线通信分析仪
公开(公告)号：US5812557A
公开(公告)日：1998-09-22
申请号：US926586
申请日：1997-09-04
申请人： J. Marcus Stewart , Glen M. Riley , Philip H. Sutterlin , Marie E. Andrus , Amy O. Hurlbut , Milton T. Tormey
发明人： J. Marcus Stewart , Glen M. Riley , Philip H. Sutterlin , Marie E. Andrus , Amy O. Hurlbut , Milton T. Tormey
IPC分类号： G01R31/28 , G01R31/42 , G06F11/00
CPC分类号： H04B3/546 , G01R31/42 , H04B3/48 , H04B3/542 , H04B2203/5408 , H04B2203/5454 , H04B2203/5458
摘要： A power line communications analyzer (PLCA) provides a signal strength metering system and selectable signal attenuation functions for adjusting the transmitting unit's attenuation and measuring error rate without the need for a user to be present at both the sending and receiving locations under test. Each PLCA is coupled to a power line communication network via an electrical outlet and power lines. In actual operation, one of the PLCAs acts as a data transmitter and the other PLCA acts as a data receiver. The mode of operation of the PLCA can be dynamically altered during operation of the system. The PLCA comprises control logic that receives command inputs from a keypad, generates data packets for transmission on the power line communication network, receives and analyzes data packets received from the power line communication network, detects the power line signal and/or noise level and drives the LED display accordingly, and displays packet transmission information on an LCD display.
摘要翻译：电力线通信分析仪（PLCA）提供信号强度测量系统和可选择的信号衰减功能，用于调整发射单元的衰减和测量误差率，而不需要用户在发送和接收位置处存在。每个PLCA通过电源插座和电源线耦合到电力线通信网络。在实际操作中，其中一个PLCAs作为数据发送器，另一个PLCA充当数据接收器。 PLCA的运行模式可以在系统运行过程中动态更改。 PLCA包括从键盘接收命令输入的控制逻辑，产生用于在电力线通信网络上传输的数据分组，接收并分析从电力线通信网络接收的数据分组，检测电力线信号和/或噪声电平并驱动 LED显示器，并且在LCD显示器上显示分组传输信息。

8. 发明授权

US5703766A Capacitor power supply for intermittent transmission 失效
标题翻译：用于间歇传输的电容器电源
公开(公告)号：US5703766A
公开(公告)日：1997-12-30
申请号：US610831
申请日：1996-03-05
申请人： Philip H. Sutterlin , J. Marcus Stewart , Amy O. Hurlbut
发明人： Philip H. Sutterlin , J. Marcus Stewart , Amy O. Hurlbut
IPC分类号： H04B5/02 , H02J3/36
CPC分类号： H04B5/0012
摘要： A power supply for a node that transmits data onto a power line. A DC supply and capacitor supply power to the node where the output current of the DC supply may be less than required for transmission by the node. When the voltage on the capacitor drops to Vmin transmissions are stopped allowing the capacitor to recharge. A timing circuit is used to determine when to begin transmission to compensate for variables in the node such as line voltages and part tolerances.
摘要翻译：用于将数据传输到电力线上的节点的电源。直流电源和电容器为直流电源的输出电流可能小于节点传输所需的节点供电。当电容上的电压下降到Vmin时，传输停止，允许电容充电。定时电路用于确定何时开始传输以补偿节点中的变量，例如线路电压和部分公差。

9. 发明授权

US5828676A Method and apparatus for robust communication based upon angular modulation 失效
标题翻译：基于角度调制的鲁棒通信方法和装置
公开(公告)号：US5828676A
公开(公告)日：1998-10-27
申请号：US661136
申请日：1996-06-10
申请人： Amy O. Hurlbut , Philip H. Sutterlin , Walter J. Downey
发明人： Amy O. Hurlbut , Philip H. Sutterlin , Walter J. Downey
IPC分类号： H03M13/09 , H03M13/21 , H03M13/25 , H03M13/29 , H03M13/45 , H04L1/00 , H04L25/49 , H04L27/18 , H03M13/00 , H04L7/00 , H04L7/04 , H04L27/22
CPC分类号： H04L27/18 , H03M13/096 , H03M13/21 , H03M13/25 , H04L1/0061 , H04L25/4906
摘要： A robust encoding and decoding system of the present invention for communicating binary information using angular modulation system is disclosed. Binary information to be transmitted is data words consisting of 8 data bits, a parity bit, and two additional coding bits at the end of the data word. A transmitter transmits the data words using a binary phase-shift keying (BPSK) modulated signal. The receiver compares the phase of incoming BPSK modulated signal against a local reference signal and records the phase characteristics of the BPSK signal. The receiver also records the amplitude of the recovered data signal. The receiver demodulates and decodes the BPSK signal using a rotating frame of reference that tracks the current phase of the recovered data signal. The receiver tests the parity bit of each word to detect errors. If an error is detected, the receiver attempts to correct the error using the record phase and amplitude information.
摘要翻译：公开了一种用于使用角度调制系统传送二进制信息的本发明的鲁棒编码和解码系统。要发送的二进制信息是由数据字末尾的8个数据位，奇偶校验位和两个附加编码位组成的数据字。发射机使用二进制相移键控（BPSK）调制信号发送数据字。接收机将输入BPSK调制信号的相位与本地参考信号进行比较，并记录BPSK信号的相位特性。接收机还记录恢复的数据信号的幅度。接收机使用跟踪恢复的数据信号的当前相位的旋转参考系来解调和解码BPSK信号。接收机测试每个字的奇偶校验位以检测错误。如果检测到错误，接收机将尝试使用记录相位和幅度信息来纠正错误。

10. 发明授权

US5461629A Error correction in a spread spectrum transceiver 失效
标题翻译：扩频收发器中的纠错
公开(公告)号：US5461629A
公开(公告)日：1995-10-24
申请号：US942723
申请日：1992-09-09
申请人： Philip H. Sutterlin , Amy O. Hurlbut
发明人： Philip H. Sutterlin , Amy O. Hurlbut
IPC分类号： H04B1/69 , H04B3/54 , H04L1/00 , H03M13/00
CPC分类号： H04L1/0057 , H04B1/69 , H04B3/542 , H04B2203/5408 , H04B2203/542 , H04B2203/5458 , H04B2203/5483
摘要： An improved transceiver for power line communication using a spread spectrum signal. The amount of correlation for each bit in a word is determined. If a parity error occurs, the state of the bit with the weakest correlation is changed.
摘要翻译：一种改进的收发器，用于使用扩频信号的电力线通信。确定单词中每个位的相关量。如果发生奇偶校验错误，则具有最弱相关性的位的状态发生变化。

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