公开(公告)号：US06765188B2

公开(公告)日：2004-07-20

申请号：US10038064

申请日：2002-01-04

Applicant: Lester R. Brodeur

Inventor： Lester R. Brodeur

IPC: H01J4014

CPC classification number: G01J1/44

Abstract: In a video receiver, a photodiode is terminated with one or more junction diodes to provide an output voltage that is a log function of the incident optical power. The termination with the diode provides a nonlinear resistance which converts the output current of the photodiode to a voltage, with the output voltage being the log of the input current due to the nonlinear resistance characteristic associated with junction diodes. The subject system eliminates the necessity of providing a transimpedance amplifier used to obtain a voltage from the photo current of a photodetector and also the requirements for a log amplifier to provide the log of the voltage to give the receiver a wide dynamic range. In one embodiment a PIN diode is provided with a series of termination diodes, with the larger of the number of diodes, the more voltage that is available. The series-connected termination diodes provide a passive low noise system for converting the photo current to a log voltage.

Abstract translation: 在视频接收机中，光电二极管被一个或多个结二极管端接，以提供作为入射光功率的对数函数的输出电压。 二极管的端接提供了一种非线性电阻，可将光电二极管的输出电流转换为电压，由于与结二极管相关的非线性电阻特性，输出电压为输入电流的对数。 该主题系统消除了提供用于从光电检测器的光电流获得电压的跨阻放大器的必要性，以及用于对数放大器以提供电压对数以给予接收器宽动态范围的要求。 在一个实施例中，PIN二极管设置有一系列终端二极管，其中较大的二极管数量可用电压越大。 串联连接的终端二极管提供用于将光电流转换为对数电压的无源低噪声系统。

公开(公告)号：US4300139A

公开(公告)日：1981-11-10

申请号：US937615

申请日：1978-08-28

Applicant: William C. Wurst ,  William R. Mercer ,  Lester R. Brodeur

Inventor： William C. Wurst ,  William R. Mercer ,  Lester R. Brodeur

IPC: G01S1/24 ,  G01S5/10

CPC classification number: G01S1/245

Abstract: A Loran-C navigation receiver is disclosed wherein digital circuitry and a microprocessor is used to automatically identify Loran transmitting stations and makes standard hyberbolic navigation measurements. The receiver operator manually enters a group repetition rate into the apparatus being operated. Initially, the receiver receives and analyzes all received signals until signals from a master and secondary station are received regularly at the stored group repetition rate. The apparatus then changes to a fine search mode in which the exact time of receipt of the master and secondary station signals is determined; the phase code of the received signals is checked to determine if the received signal is a ground or sky wave, and a determination is made if there is a deflective secondary station blink code. The time difference of arrival measurements are then made and an output provided to be plotted in a well-known manner on a Loran-C chart to locate the position of the craft upon which the receiver is located.

Abstract translation: 公开了一种Loran-C导航接收机，其中使用数字电路和微处理器来自动识别Loran发射站并进行标准的hybbolic导航测量。 接收者操作者手动地将组重复率输入到正在操作的装置中。 最初，接收机接收并分析所有接收到的信号，直到来自主站和次站的信号以所存储的组重复率被定期地接收。 然后，该装置变为精确搜索模式，其中确定主站和次站信号的确切接收时间; 检查接收信号的相位代码以确定接收到的信号是地面还是天波，并且确定是否存在偏转次站闪烁码。 然后进行到达测量的时间差，并且提供以在众所周知的方式绘制在Loran-C图上的输出来定位接收器所位于的飞行器的位置。

公开(公告)号：US06525434B2

公开(公告)日：2003-02-25

申请号：US10038052

申请日：2002-01-04

Applicant: Lester R. Brodeur

Inventor： Lester R. Brodeur

IPC: H02J100

CPC classification number: H02M3/33561 ,  Y10T307/469 ,  Y10T307/735

Abstract: A switching circuit useful in a binary demand feedback DC converter having multiple DC outputs which are all independently regulated using a binary on/off technique is disclosed. A comparator associated with each output compares the voltage at a given output with a reference voltage for the respective given output and generates a first signal the moment the output voltage exceeds the reference voltage. Responding immediately to the first signal a switch opens the converter transformer secondary winding associated with that output from a rectifier and filter. The voltage at that output is determined by the voltage across a capacitor in the filter and the capacitor commences discharging to be below the reference voltage at which time the first signal ceases and the switch reconnects the secondary winding to the rectifier and filter to recommence charging the filter capacitor. A logic OR gate having its inputs connected to all comparators senses the first signal from any one of the comparators and provides a signal that operates a second switch that disconnects a binary switch controller from the converter transformer primary winding until there are no first signals present at the input of the OR gate.

公开(公告)号：US4021608A

公开(公告)日：1977-05-03

申请号：US580090

申请日：1975-05-22

Applicant: Lester R. Brodeur

Inventor： Lester R. Brodeur

IPC: H04L21/04 ,  H04L21/00 ,  H04L15/34

CPC classification number: H04L21/04

Abstract: A hand held pager is disclosed which displays a transmitted message in hard copy form on a tape to permit a written record of the message for readout at the convenience of the recipient of the message. The hard copy pager is provided with a printing system in which the printing medium is continually moved past the printing head without significant degradation of the information recorded so that indexing of either the head or the printing medium is avoided.

Abstract translation: 公开了一种手持式寻呼机，其以硬拷贝形式在磁带上显示发送的消息，以允许消息的书面记录在消息的接收方方便地读出。 硬拷贝寻呼机设置有打印系统，其中打印介质不断地移动经过打印头，而不会显着降低所记录的信息，从而避免了头部或打印介质的分度。

公开(公告)号：USRE31254E

公开(公告)日：1983-05-24

申请号：US300341

申请日：1981-09-08

Applicant: Lester R. Brodeur

Inventor： Lester R. Brodeur

IPC: G01S1/02 ,  G01S19/48

CPC classification number: G01S1/026

Abstract: A method for self calibration of a LORAN-C navigation receiver utilizing a microprocessor is disclosed wherein the time difference of signal arrival of master station pulse trains from a LORAN-C chain selected by group repetition interval (GRI) information input to the receiver becomes a frequency standard to which the output of an oscillator and counter internal to the receiver is compared to determine frequency error. The error is interpolated over each GRI and .[.a correction factor is added or subtracted to each count output of.]. .Iadd.time counts from .Iaddend.the counter used to make time difference of signal arrival measurements .Iadd.are modified in accordance with the determined frequency error to achieve accurate time difference of signal arrival measurements.Iaddend..

公开(公告)号：US4325067A

公开(公告)日：1982-04-13

申请号：US28142

申请日：1979-04-09

Applicant: Lester R. Brodeur

Inventor： Lester R. Brodeur

IPC: G01S1/24

CPC classification number: G01S1/245

Abstract: Noise generated in the front end of a LORAN-C receiver that causes noise bias interfering with carrier cycle detection is effectively removed by periodically shifting the phase of all received signals of 180.degree. in the front end of the receiver and then removing any phase shift elsewhere in the receiver where noise is no longer a problem but before the phase shift can affect time difference of signal arrival measurements normally made in LORAN-C receivers. In this manner, noise generated in the front end of the receiver is averaged out and doesn't introduce bias levels to the received signal.

Abstract translation: 通过在接收机前端周期性地移动180°的所有接收信号的相位，然后在其他地方移除任何相移，有效地消除了导致干扰载波周期检测的噪声偏置的LORAN-C接收机前端产生的噪声 在接收机中，噪声不再是问题，但在相移之前可能会影响通常在LORAN-C接收机中进行的信号到达测量的时间差。 以这种方式，在接收机的前端产生的噪声被平均化，并且不向接收的信号引入偏置电平。

公开(公告)号：US4318105A

公开(公告)日：1982-03-02

申请号：US22661

申请日：1979-03-22

Applicant: Lester R. Brodeur

Inventor： Lester R. Brodeur

IPC: G01S1/24 ,  G01S5/10

CPC classification number: G01S1/245 ,  G01S5/10

Abstract: LORAN-C navigation apparatus is disclosed wherein digital circuitry and a microprocessor is used to automatically identify LORAN transmitting stations and makes standard hyberbolic navigation measurements. The equipment operator manually enters the group repetition rate into the apparatus for a LORAN-C chain covering the area within which the navigation apparatus is being operated. Initially, the apparatus searches all incoming signals until signals from a master station are received regularly at the stored group repetition rate. The apparatus then closely determines the time of arrival of signals from the secondary stations of the selected LORAN-C chain before changing to a fine search mode in which the exact time of arrival of the secondary station signals is determined; the phase code of the received signals is checked to determine if the received signal is a ground or sky wave, and a determination is made if there is a defective secondary station blink code. The time difference of arrival measurements are then output visually to be plotted in a well known manner on a LORAN-C chart to locate the position of the craft upon which the apparatus is located.

Abstract translation: 公开了LORAN-C导航装置，其中使用数字电路和微处理器来自动识别LORAN发射台并进行标准的静音导航测量。 设备操作员将组重复率手动输入到覆盖导航装置正在操作的区域的LORAN-C链的装置中。 最初，该设备搜索所有输入信号，直到按照存储组重复率定期接收来自主站的信号。 然后，该设备在切换到确定次站信号的确切到达时间的精细搜索模式之前，紧密地确定来自所选LORAN-C链的次站的信号的到达时间; 检查接收信号的相位码以确定接收到的信号是地面还是天波，并且确定是否存在缺陷的次站闪烁码。 然后，以目测方式输出到达测量的时间差，以公知的方式绘制在LORAN-C图表上，以定位装置所在的飞行物的位置。

公开(公告)号：US4150380A

公开(公告)日：1979-04-17

申请号：US881485

申请日：1978-02-27

Applicant: Lester R. Brodeur

Inventor： Lester R. Brodeur

IPC: G01S1/24 ,  G01S5/10 ,  G01S1/26

CPC classification number: G01S1/245 ,  G01S5/10

Abstract: LORAN-C navigation equipment is disclosed wherein digital circuitry is used to automatically distinguish a master LORAN-C transmitting station from a secondary station. The equipment operator manually enters approximate time difference of signal arrival information for a particular secondary station into the equipment after consulting a LORAN-C chart. The operator then manually determines the exact time difference of arrival using thumbwheel switches and a LED lamp display. This procedure is repeated to determine exact time difference of arrival information for the master and each selected secondary station, and the information is plotted in a well-known manner on the LORAN-C chart to locate the position of the craft upon which the equipment is located. Manual acquisition of secondary stations simplifies the equipment and eliminates interference problems caused by skywaves and other transmissions. The set oscillator is easily and quickly caibrated by the operator who manually enters the LORAN-C chain group repetition interval information found on the LORAN-C chart on the thumbwheel switches of the receiver and then adjusts the oscillator for an match as indicated on the LED display.

Abstract translation: 公开了LORAN-C导航设备，其中使用数字电路来自动区分主LORAN-C发射站和次站。 在咨询LORAN-C图表之后，设备操作员手动将特定次站的信号到达信息的近似时差输入设备。 然后，操作员手动确定使用指轮开关和LED灯显示屏的确切到达时间差。 重复该过程以确定主机和每个所选次站的到达信息的准确时间差，并且在LORAN-C图上以公知的方式绘制信息，以定位设备所在的机身的位置 位于。 辅助站的手动采集简化了设备，消除了天波和其他传输引起的干扰问题。 操作人员手动输入LORAN-C链组重复间隔信息，在接收机的指轮开关上LORAN-C图表上找到的设置振荡器可以轻松快速地进行调整，然后调整振荡器进行匹配，如LED指示灯 显示。

公开(公告)号：US4104635A

公开(公告)日：1978-08-01

申请号：US741268

申请日：1976-11-12

Applicant: Lester R. Brodeur

Inventor： Lester R. Brodeur

IPC: G01S1/24 ,  G01S5/10 ,  G01S1/30

CPC classification number: G01S1/245 ,  G01S5/10

Abstract: LORAN-C navigation equipment is disclosed wherein digital circuitry is used to automatically distinguish a master LORAN-C transmitting station from a secondary station. The equipment operator manually enters approximate time difference of signal arrival information for a particular secondary station into the equipment after consulting a LORAN-C chart. The operator then manually determines the exact time difference of arrival using thumbwheel switches and a LED lamp display. This procedure is repeated to determine exact time difference of arrival information for the master and each selected secondary station, and the information is plotted in a well-known manner on the LORAN-C chart to locate the position of the craft upon which the equipment is located. Manual acqisition of secondary stations simplifies the equipment and eliminates interference problems caused by skywaves and other transmissions. The set oscillator is easily and quickly calibrated by the operator who manually enters the LORAN-C chain group repetition interval information found on the LORAN-C chart on the thumbwheel switches of the receiver and then adjusts the oscillator for a match as indicated on the LED display.

Abstract translation: 公开了LORAN-C导航设备，其中使用数字电路来自动区分主LORAN-C发射站和次站。 在咨询LORAN-C图表之后，设备操作员手动将特定次站的信号到达信息的近似时差输入设备。 然后，操作员手动确定使用指轮开关和LED灯显示屏的确切到达时间差。 重复该过程以确定主机和每个所选次站的到达信息的准确时间差，并且在LORAN-C图上以公知的方式绘制信息，以定位设备所在的机身的位置 位于。 次站的手动采集简化了设备，消除了天波和其他传输引起的干扰问题。 设置的振荡器由操作员轻松快速地校准，操作员手动输入LORAN-C链组重复间隔信息，该信息在接收机的指轮开关上的LORAN-C图表上找到，然后根据LED指示调整振荡器进行匹配 显示。

公开(公告)号：US3996581A

公开(公告)日：1976-12-07

申请号：US580076

申请日：1975-05-22

Applicant: Lester R. Brodeur ,  James W. Maben ,  E. H. Parkinson

Inventor： Lester R. Brodeur ,  James W. Maben ,  E. H. Parkinson

IPC: G08B5/22 ,  H04M11/02 ,  H04B7/00

CPC classification number: G08B5/227

Abstract: A hand held pager is disclosed which displays a transmitted message in hard copy form on a tape to permit a written record of the message for readout at the convenience of the recipient of the message. The hard copy pager is provided with a printing system in which the printing medium is continually moved past the printing head without significant degradation of the information recorded so that indexing of either the head or the printing medium is avoided. In one embodiment, the pager package includes a cover which is slipped over the main body of the package for providing part of the tape threading channel, with at least a portion of the sliding cover being transparent so that characters imprinted on the tape are readily visible through the cover. Also in this embodiment, a unique address and group call decoder includes a number of normally-off timer decoding elements which are actuated upon receipt of a decoded tone and are cross-inhibited to provide improved shock protection.

Abstract translation: 公开了一种手持式寻呼机，其以硬拷贝形式在磁带上显示发送的消息，以允许消息的书面记录在消息的接收方方便地读出。 硬拷贝寻呼机设置有打印系统，其中打印介质不断地移动经过打印头，而不会显着降低所记录的信息，从而避免了头部或打印介质的分度。 在一个实施例中，寻呼机包括一个盖子，该盖子被套在包装的主体上，用于提供一部分带穿线通道，滑动盖的至少一部分是透明的，使得印在磁带上的字符容易可见 通过封面。 同样在本实施例中，唯一的地址和组呼叫解码器包括许多正常关闭的定时器解码元件，其在接收到解码的音调时被致动并被交叉禁止以提供改进的防震保护。