公开(公告)号：US4055079A

公开(公告)日：1977-10-25

申请号：US712630

申请日：1976-08-09

申请人： Thaddeus J. Dudziak

发明人： Thaddeus J. Dudziak

IPC分类号： F02P17/02 ,  G01M15/06 ,  G01M15/00

CPC分类号： G01M15/06 ,  F02P17/02

摘要： In a cylinder compression test apparatus for a spark ignition engine, imped means for generating an electrical pulse representing the fire period for a selected cylinder. The mechanism is useful during engine compression test for correlating each measured waveform with the cylinder that produced that particular waveform.

摘要翻译： 在用于火花点火发动机的气缸压缩试验装置中，改进了用于产生表示所选气缸的火焰周期的电脉冲的装置。 在发动机压缩测试期间，该机制可用于将每个测量波形与产生该特定波形的气缸相关联。

公开(公告)号：US06470032B2

公开(公告)日：2002-10-22

申请号：US09813774

申请日：2001-03-20

申请人： Thaddeus J. Dudziak ,  Dumitru Gruia ,  Joseph G. DeCarolis

发明人： Thaddeus J. Dudziak ,  Dumitru Gruia ,  Joseph G. DeCarolis

IPC分类号： H04B1000

CPC分类号： H04J3/0664 ,  H04J3/0697 ,  H04Q11/0066 ,  H04Q11/0067 ,  H04Q2011/0045

摘要： A system and method for synchronizing clocks related to telecommunications throughout s point-to-multipoint optical network utilizes downstream data timed using a high frequency transmission clock to distribute timing information of a central telecom-based clock to remote terminals. In an exemplary embodiment, the point-to-multipoint optical network system is an Ethernet-based passive optical network (PON) system that operates in accordance with a Gigabit Ethernet standard. The timing information of the central telecom-based clock is extracted from the downstream data at each remote terminal by recovering the high frequency transmission clock and then, deriving a reference clock, which is synchronized with the central telecom-based clock, from the recovered transmission clock. The reference clock is then used to generate one or more telecom-related clocks that are needed by the remote terminal. The system and method allows telecom-related clocks throughout the system to be synchronized in an efficient and cost-effective manner.

摘要翻译： 通过s点对多点光网络同步与电信相关的时钟的系统和方法利用使用高频传输时钟定时的下行数据，以将基于中心电信的时钟的定时信息分发给远程终端。 在示例性实施例中，点对多点光网络系统是基于千兆以太网标准操作的基于以太网的无源光网络（PON）系统。 通过恢复高频传输时钟，从每个远程终端的下游数据提取中央电信时钟的定时信息，然后从恢复的传输中导出与基于中央电信的时钟同步的参考时钟 时钟。 然后，参考时钟用于产生远程终端所需的一个或多个与电信相关的时钟。 该系统和方法允许整个系统中的与电信相关的时钟以高效和成本有效的方式同步。

公开(公告)号：US08929849B1

公开(公告)日：2015-01-06

申请号：US12881745

申请日：2010-09-14

申请人： Thaddeus J. Dudziak

发明人： Thaddeus J. Dudziak

IPC分类号： H04M11/04

CPC分类号： H04W4/12 ,  H04M11/066 ,  H04W4/02 ,  H04W4/18 ,  H04W4/90

摘要： An emergency message handling system may manage emergency SMS text messages sent by wireless mobile communication devices, such as to 911. Each message may be sent to an emergency call service having a TTY messaging system. The emergency message handling system may include an SMS network interface, a computer processing system, and a TTY network interface. The SMS network interface may be configured to receive the emergency SMS text messages. The computer processing system may include an SMS-To-TTY message converter configured to convert each of the emergency SMS text messages into TTY format. The TTY network interface may be configured to deliver each of the converted emergency SMS text messages in TTY format to the TTY messaging system of the emergency call service to which the emergency SMS text message was sent. Emergency TTY messages from the emergency call service to the wireless mobile communication device may similarly be delivered to the TTY network interface, converted by a TTY-To-SMS message converter in the computer processing system into SMS format, and sent by the SMS network interface to the wireless mobile communication device.

摘要翻译： 紧急消息处理系统可以管理由诸如911之类的无线移动通信设备发送的紧急SMS短信。每个消息可以被发送到具有TTY消息系统的紧急呼叫服务。 紧急消息处理系统可以包括SMS网络接口，计算机处理系统以及TTY网络接口。 SMS网络接口可以被配置为接收紧急SMS文本消息。 计算机处理系统可以包括被配置为将每个紧急SMS文本消息转换成TTY格式的SMS到TTY消息转换器。 TTY网络接口可以被配置为将TTY格式的每个转换的紧急SMS文本消息传送到发送紧急SMS文本消息的紧急呼叫服务的TTY消息系统。 从紧急呼叫服务到无线移动通信设备的紧急TTY消息可以类似地传送到TTY网络接口，由计算机处理系统中的TTY到SMS消息转换器转换成SMS格式，并由SMS网络接口发送 到无线移动通信设备。

公开(公告)号：US4847569A

公开(公告)日：1989-07-11

申请号：US16926

申请日：1987-02-20

申请人： Thaddeus J. Dudziak ,  Charles Lehmkuhl ,  David Badger

发明人： Thaddeus J. Dudziak ,  Charles Lehmkuhl ,  David Badger

IPC分类号： H03L7/189

CPC分类号： H03L7/189

摘要： A signal generator including a calibration circuit for providing periodic recalibration of the generator, including a reference frequency source for producing a fixed frequency signal. A voltage controlled oscillator (VCO) for producing a variable frequency signal in accordance with a voltage input to the VCO. An adjustable dividing network coupled to the VCO for dividing the variable frequency signal by a particular divider (N) to produce an output signal equal to the variable frequency signal divided by "N". A phase detector coupled to the reference frequency source and the dividing network for producing an error signal in accordance with the difference between the fixed frequency signal and the output signal. A filter coupled to the phase detector for producing an error voltage signal representative of the error signal. A programmable nonvolatile storage for storing a plurality of individual values representative of the plurality of frequency steps from the VCO. A converter coupled to the programmable storage for converting the stored values to a plurality of individual voltage signals. A summer coupled to the filter and the converter for summing the signals and applying the summed signals to the VCO for controlling the VCO to particular frequency steps. A comparator coupled to the phase detector for comparing the error signal to a fixed reference for producing a control signal in accordance with the comparison, and a controller coupled to the comparator and the programmable storage for reprogramming the plurality of individual values to recalibrate the frequency steps in accordance with the control signal.

摘要翻译： 一种信号发生器，包括用于提供发生器的周期性重新校准的校准电路，包括用于产生固定频率信号的参考频率源。 一种用于根据输入到VCO的电压产生可变频率信号的压控振荡器（VCO）。 耦合到VCO的可调分频网络，用于将可变频率信号除以特定的分频器（N）以产生等于“N”的可变频率信号的输出信号。 耦合到参考频率源和分频网络的相位检测器，用于根据固定频率信号和输出信号之间的差产生误差信号。 耦合到相位检测器的滤波器，用于产生代表误差信号的误差电压信号。 一种用于从VCO存储表示多个频率步长的多个单独值的可编程非易失性存储器。 A转换器，其耦合到可编程存储器，用于将存储的值转换为多个单独的电压信号。 耦合到滤波器和转换器的加法器，用于对信号求和并将加和的信号施加到VCO，以将VCO控制到特定的频率步长。 比较器，耦合到所述相位检测器，用于将所述误差信号与固定参考值进行比较，用于根据所述比较产生控制信号;以及控制器，其耦合到所述比较器和所述可编程存储器，用于重新编程所述多个独立值以重新校准所述频率步长 按照控制信号。