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11. 发明授权

US07685452B2 Method for high voltage power feed on differential cable pairs from a network attached power sourcing device 失效
标题翻译：用于从网络连接的电源装置的差分电缆对上进行高压电力馈送的方法
公开(公告)号：US07685452B2
公开(公告)日：2010-03-23
申请号：US11287408
申请日：2005-11-23
申请人： John R. Camagna , Philip Crawley , Sajol Ghoshal
发明人： John R. Camagna , Philip Crawley , Sajol Ghoshal
IPC分类号： G06F1/00 , G06F11/30
CPC分类号： H04L12/10
摘要： Embodiments of the present invention provide a power feed circuit operable to supply an Ethernet power signal to a coupled Ethernet network. This power feed circuit includes a number of input nodes, differential transistor pairs, active control circuits and output nodes. The input nodes receive a first power signal such as that provided by an isolated 48 volt power supply. Each transistor of the differential transistor pairs couples to one input node. These differential transistor pairs produce a second power signal which may be supplied to the Ethernet network. The active control circuits sense the second power signal passed by each transistor and are operable to apply a feedback signal to the differential transistor pairs based on the sensed power signal. At least one twisted pair couples to each differential transistor pair's output node and is operable to pass the Ethernet power signal.
摘要翻译：本发明的实施例提供了可操作以将以太网功率信号提供给耦合以太网的供电电路。该馈电电路包括多个输入节点，差分晶体管对，有源控制电路和输出节点。输入节点接收第一功率信号，例如由隔离的48伏特电源提供的功率信号。差分晶体管对的每个晶体管耦合到一个输入节点。这些差分晶体管对产生可以提供给以太网的第二功率信号。主动控制电路感测由每个晶体管通过的第二功率信号，并且可操作以基于感测到的功率信号将反馈信号施加到差分晶体管对。至少一对双绞线耦合到每个差分晶体管对的输出节点，并且可操作地传递以太网功率信号。

12. 发明授权

US07620825B2 Systems and methods operable to allow loop powering of networked devices 失效
标题翻译：系统和方法可操作以允许网络设备的环路供电
公开(公告)号：US07620825B2
公开(公告)日：2009-11-17
申请号：US11207601
申请日：2005-08-19
申请人： John R. Camagna , Sajol Ghoshal , Francois Crepin
发明人： John R. Camagna , Sajol Ghoshal , Francois Crepin
IPC分类号： G06F1/26
CPC分类号： G06F1/266
摘要： Embodiments of the present invention provide a network device operable to receive a network signal that may include both power and data from a coupled network. This network device includes a network connector and an integrated circuit. The network connector physically couples the network device to the network. An optional protection circuit may provide surge protection or incoming network signals received by the network device through the network connector. An optional switching/rectifying circuit sees the output of the protection circuit and is operable to rectify a power signal when contained within the network signal. The integrated circuit further includes a power feed circuit conductively coupled to the protection circuit and the rectifying circuit. This power feed circuit is operable to separate and pass the received data signal to a network physical layer and separate and pass the received power signal to a power management module. The power management module electrically couples to the integrated circuit but is not necessarily part of the integrated circuit. The power management module is operable to at least partially power the network device for specific circuits within the network device from the received power signal.
摘要翻译：本发明的实施例提供一种网络设备，其可操作以接收可以包括来自耦合网络的功率和数据的网络信号。该网络设备包括网络连接器和集成电路。网络连接器将网络设备物理耦合到网络。可选的保护电路可以通过网络连接器提供由网络设备接收的浪涌保护或输入网络信号。可选择的开关/整流电路看到保护电路的输出，并且可用于在包含在网络信号内时对功率信号进行整流。集成电路还包括导电耦合到保护电路和整流电路的馈电电路。该供电电路可操作以将接收到的数据信号分离并传递到网络物理层，并将接收到的功率信号分离并传递到电源管理模块。电源管理模块电耦合到集成电路，但不一定是集成电路的一部分。电源管理模块可操作以从接收的功率信号至少部分地为网络设备内的特定电路供电网络设备内的特定电路。

13. 发明申请

US20080218258A1 DIGITAL ISOLATOR 失效
标题翻译：数字隔离器
公开(公告)号：US20080218258A1
公开(公告)日：2008-09-11
申请号：US11683985
申请日：2007-03-08
申请人： Philip John Crawley , Sajol Ghoshal , John R. Camagna
发明人： Philip John Crawley , Sajol Ghoshal , John R. Camagna
IPC分类号： H03F3/38
CPC分类号： H03F3/45183 , H01L2224/05554 , H01L2224/48137 , H01L2224/49175 , H01L2924/00014 , H01L2924/3011 , H03F1/3211 , H03F3/393 , H03F2200/261 , H03F2200/271 , H03F2203/45101 , H01L2224/45099 , H01L2924/00
摘要： A signal isolator comprises an isolation barrier, a transmitter, a differentiator, and a recovery circuit. The transmitter is coupled to a first side of the isolation barrier and is configured to receive and convert an information signal to a differential signal that encodes information in the information signal in a single transition edge. The differentiator is coupled to a second side that is isolated from the first side of the isolation harrier and differentiates the differential signal. The recovery circuit is coupled to the differentiator and operates to recover an output information signal based on the information in the single transition edge.
摘要翻译：信号隔离器包括隔离屏障，发射器，微分器和恢复电路。发射机耦合到隔离屏障的第一侧，并且被配置为接收并将信息信号转换为在单个过渡边缘中对信息信号中的信息进行编码的差分信号。微分器耦合到与隔离器的第一侧隔离并且差分差分信号的第二侧。恢复电路耦合到微分器并且操作以基于单个过渡边缘中的信息来恢复输出信息信号。

14. 发明申请

US20080144248A1 Network Interface with Transient Protection Apparatus for Multiple Ground Planes 失效
标题翻译：多接地平面瞬态保护装置的网络接口
公开(公告)号：US20080144248A1
公开(公告)日：2008-06-19
申请号：US11678369
申请日：2007-02-23
申请人： Philip John Crawley , John R. Camagna , Charles Cai
发明人： Philip John Crawley , John R. Camagna , Charles Cai
IPC分类号： H02H3/22
CPC分类号： H04L12/10 , H02H3/023 , H02H9/041 , H04L25/029
摘要： A network interface apparatus is disclosed that includes a connector coupled to a plurality of communication lines. A Physical Layer (PHY) device coupled to the communication lines and to a first ground level. A transient event suppression module coupled between the communication lines and a low impedance path to earth ground. During a transient event the transient event suppression module provides a low impedance path to the earth ground to protect the PHY device from the transient event. A power circuit that delivers power from a second ground level to the PHY device is coupled to the first ground level. The first ground level and the second ground level are coupled to provide a low impedance path during normal operation and high impedance during transient events.
摘要翻译：公开了一种网络接口设备，其包括耦合到多个通信线路的连接器。耦合到通信线路和第一地平面的物理层（PHY）设备。耦合在通信线路和到地面的低阻抗路径之间的瞬态事件抑制模块。在瞬态事件期间，瞬态事件抑制模块提供到地线的低阻抗路径，以保护PHY器件免受瞬态事件的影响。将功率从第二接地电平传送到PHY设备的电源电路耦合到第一地电平。第一接地电平和第二接地电平耦合以在正常操作期间提供低阻抗路径并且在瞬态事件期间提供高阻抗。

15. 发明授权

US06249557B1 Apparatus and method for performing timing recovery 失效
标题翻译：用于执行定时恢复的装置和方法
公开(公告)号：US06249557B1
公开(公告)日：2001-06-19
申请号：US09033769
申请日：1998-03-03
申请人： Hiroshi Takatori , Stanley K. Ling , Amit Gattani , John R. Camagna
发明人： Hiroshi Takatori , Stanley K. Ling , Amit Gattani , John R. Camagna
IPC分类号： H04L700
CPC分类号： H04L7/0058 , H04L7/0062 , H04L7/0083
摘要： A timing recovery circuit is disclosed that prevents phase error over-compensation. The timing recovery circuit includes a phase scanner for determining when phase error over-compensation has occurred and generating a signal for preventing dual phase compensation in response thereto thereby providing an accurate recovered clock signal. The timing recovery circuit also includes a feed-forward equalizer having a plurality of taps providing coefficients for filtering and adapting the input timing recovery circuit to an input signal. The phase scanner compares the tap coefficients to generate signal for preventing phase over-compensation by the feed-forward equalizer. A phase detector is provided for sampling coefficients from the feed-forward equalizer, error signals and output data and generating a phase signal used to generating the recovered clock signal. The signal for preventing phase over-compensation is mixed with the phase signal to generate the recovered clock signal.
摘要翻译：公开了一种防止相位误差过度补偿的定时恢复电路。定时恢复电路包括用于确定何时发生相位误差过补偿的相位扫描器，并且响应于此产生用于防止双相补偿的信号，从而提供精确的恢复时钟信号。定时恢复电路还包括具有多个抽头的前馈均衡器，其提供用于滤波和适配输入定时恢复电路到输入信号的系数。相位扫描器比较抽头系数以产生用于防止前馈均衡器的相位过补偿的信号。提供相位检测器用于从前馈均衡器，误差信号和输出数据中采样系数，并产生用于产生恢复的时钟信号的相位信号。用于防止相位过度补偿的信号与相位信号混合以产生恢复的时钟信号。

16. 发明授权

US6134570A Method and apparatus for efficient implementation of a multirate LMS filter 失效
标题翻译：用于有效实施多速率LMS滤波器的方法和装置
公开(公告)号：US6134570A
公开(公告)日：2000-10-17
申请号：US75641
申请日：1998-05-11
申请人： John R. Camagna , Hiroshi Takatori , Ping An
发明人： John R. Camagna , Hiroshi Takatori , Ping An
IPC分类号： H03H21/00 , G06F17/10
CPC分类号： H03H21/0012
摘要： An efficient implementation of a multirate filter with delayed error feedback prevents an instruction processing rate requirement from increasing by performing interpolation and decimation in a LMS filter element at the same time. The multirate filter calculates an ith coefficient value, wherein i is a set of consecutive integers, by obtaining an (i-1)th error value, obtaining an (i-1)th data value, multiplying the (i-1)th error value and the (i-1)th data value to obtain an ith coefficient product, obtaining Mth coefficient value from a coefficient register, wherein M is a predetermined integer, adding the Mth coefficient value to the ith coefficient product to obtain an ith coefficient value calculating an ith data value by multiplying the (i-1)th data value and the Mth coefficient value to produce ith convolution product, and adding an (i-1)th convolution sum to the ith convolution product to produce an ith convolution sum. Obtaining of the Mth coefficient value decimates the convolution product by M and interpolates the error value by M. Obtaining of the (i-1)th data value further includes incrementing a data register by one when new data is not written into the data register.
摘要翻译：具有延迟误差反馈的多速率滤波器的有效实现通过在LMS滤波器元件中同时执行插值和抽取来防止指令处理速率要求增加。多速率滤波器通过获得第（i-1）个误差值来计算第i个系数值，其中i是一组连续整数，获得第（i-1）个数据值，乘以第（i-1）个误差值和第（i-1）个数据值以获得第i个系数乘积，从系数寄存器获得Mth系数值，其中M是预定整数，将第M个系数值与第i个系数乘积相加以获得第i个系数值通过将第（i-1）个数据值和第M个系数值相乘以产生第i个卷积积来计算第i个数据值，并将第（i-1）个卷积和加到第i个卷积乘积以产生第i个卷积和。获取第M个系数值将卷积乘除M，并将误差值内插。（i-1）数据值的获取还包括当新数据未写入数据寄存器时将数据寄存器递增1。

17. 发明申请

US20090207538A1 ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT 有权
标题翻译：静电放电保护电路
公开(公告)号：US20090207538A1
公开(公告)日：2009-08-20
申请号：US12031609
申请日：2008-02-14
申请人： Philip John Crawley , Amit Gattani , John R. Camagna , Jun Cai
发明人： Philip John Crawley , Amit Gattani , John R. Camagna , Jun Cai
IPC分类号： H02H9/00
CPC分类号： H04L12/10
摘要： A network device comprises an interface coupling an electronic device to a differential pair of signal lines, and an integrated active common mode suppression and electrostatic discharge protection circuit coupled to the interface in parallel to differential signal lines of the electronic device. First and second resistors are respectively coupled to the differential lines between the integrated active common mode suppression and electrostatic discharge protection circuit and the electronic device.
摘要翻译：网络设备包括将电子设备耦合到差分信号线对的接口以及并联于电子设备的差分信号线的接口耦合的集成的有源共模抑制和静电放电保护电路。第一和第二电阻分别耦合到集成的有源共模抑制和静电放电保护电路与电子器件之间的差分线。

18. 发明授权

US07500118B2 Network device with power potential rectifier 失效
标题翻译：带电源整流器的网络设备
公开(公告)号：US07500118B2
公开(公告)日：2009-03-03
申请号：US11284998
申请日：2005-11-21
申请人： Philip John Crawley , John R. Camagna
发明人： Philip John Crawley , John R. Camagna
IPC分类号： G06F1/00 , G05F1/10 , H02M5/45
CPC分类号： H04L25/0266 , H04L12/12 , Y02D50/40 , Y02D50/42
摘要： In a network device, a power potential rectifier is adapted to conductively couple a network connector to an integrated circuit that rectifies and passes a power signal and data signal received from the network connector. The power potential rectifier regulates a received power and/or data signal to ensure proper signal polarity is applied to the integrated circuit.
摘要翻译：在网络设备中，电源整流器适于将网络连接器导电地耦合到整流并传递从网络连接器接收的功率信号和数据信号的集成电路。功率电位整流器调节接收的功率和/或数据信号，以确保对集成电路施加适当的信号极性。

19. 发明授权

US06707868B1 Apparatus for recovering timing of a digital signal for a transceiver 失效
标题翻译：用于恢复收发器的数字信号定时的装置
公开(公告)号：US06707868B1
公开(公告)日：2004-03-16
申请号：US09291136
申请日：1999-04-12
申请人： John R. Camagna , James Ward Girardeau, Jr. , Stanley K. Ling , Hiroshi Takatori
发明人： John R. Camagna , James Ward Girardeau, Jr. , Stanley K. Ling , Hiroshi Takatori
IPC分类号： H04L700
CPC分类号： H04L7/0058 , H04L25/0202 , H04L2025/03471
摘要： A digital timing recovery system wherein the rate conversion is independent of the sampling rate, and which may be set in a network mode or a remote mode. The invention includes a transceiver core for processing transmit and receive data at a predetermined baud rate, an analog front end for transmitting and receiving analog signals over a network, a phase detector for generating a phase error estimate and a timing controller for receiving the phase error estimate signal and generating a receive and transmit phase control signal for controlling timing of the analog front end. A selector is provided for selecting a remote mode of operation or a network mode of operation. The analog front end further includes a transmit converter for converting the transmit data at the baud rate to a digital output at a transmit rate and a digital to analog converter for converting the digital output to an analog signal, and an analog to digital converter for converting the analog receive signal to a digital receive signal and a receive converter for converting the digital receive signal at a receive rate to the baud rate. The phase detector includes a channel estimator for generating a coefficient error signal and the timing controller includes a loop filter for producing a control signal for a numerically controlled oscillator that produces a baud interrupt signal and the phase control signals.
摘要翻译：数字定时恢复系统，其中速率转换独立于采样速率，并且其可以被设置在网络模式或远程模式中。本发明包括用于以预定波特率处理发送和接收数据的收发机核心，用于通过网络发送和接收模拟信号的模拟前端，用于产生相位误差估计的相位检测器和用于接收相位误差的定时控制器估计信号并产生用于控制模拟前端的定时的接收和发送相位控制信号。提供选择器用于选择远程操作模式或网络操作模式。模拟前端还包括发送转换器，用于将波特率的发送数据以发送速率转换为数字输出，以及用于将数字输出转换为模拟信号的数模转换器，以及用于转换的模数转换器到数字接收信号的模拟接收信号和用于以接收速率将数字接收信号转换成波特率的接收转换器。相位检测器包括用于产生系数误差信号的信道估计器，并且定时控制器包括用于产生用于产生波特率中断信号和相位控制信号的数控振荡器的控制信号的环路滤波器。

20. 发明授权

US09197423B2 Electrostatic discharge protection circuit 有权
标题翻译：静电放电保护电路
公开(公告)号：US09197423B2
公开(公告)日：2015-11-24
申请号：US12031609
申请日：2008-02-14
申请人： Philip John Crawley , Amit Gattani , John R. Camagna , Jun Cai
发明人： Philip John Crawley , Amit Gattani , John R. Camagna , Jun Cai
IPC分类号： H02H9/00 , H04L12/10
CPC分类号： H04L12/10
摘要： A network device comprises an interface coupling an electronic device to a differential pair of signal lines, and an integrated active common mode suppression and electrostatic discharge protection circuit coupled to the interface in parallel to differential signal lines of the electronic device. First and second resistors are respectively coupled to the differential lines between the integrated active common mode suppression and electrostatic discharge protection circuit and the electronic device.
摘要翻译：网络设备包括将电子设备耦合到差分信号线对的接口以及并联于电子设备的差分信号线的接口耦合的集成的有源共模抑制和静电放电保护电路。第一和第二电阻分别耦合到集成的有源共模抑制和静电放电保护电路与电子器件之间的差分线。

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