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1. 发明授权

US5132828A Analog video fiber optic link 失效
标题翻译：模拟视频光纤链路
公开(公告)号：US5132828A
公开(公告)日：1992-07-21
申请号：US754364
申请日：1991-08-29
申请人： David E. Conner , Alexander G. MacInnis
发明人： David E. Conner , Alexander G. MacInnis
IPC分类号： H04N7/22 , H04B10/00 , H04B10/152
CPC分类号： H04B10/691 , H04B10/502
摘要： Described is an electro/optical system for transmitting video information. The system includes a transmitter assembly interconnected via a fiber optic assembly to a receiver assembly. The transmitter assembly includes a circuit arrangement which generates a data stream of analog signals interspersed with control pulses. The data stream is transmitted through the fiber optic assembly. Changes in the control pulses are detected at the receiver and are used to adjust the gain of a video amplifier.

2. 发明授权

US4574228A Current controlled motor drive circuit 失效
标题翻译：电流控制电机驱动电路
公开(公告)号：US4574228A
公开(公告)日：1986-03-04
申请号：US679336
申请日：1984-12-07
申请人： Larry A. Blue , David E. Conner
发明人： Larry A. Blue , David E. Conner
IPC分类号： H02P8/00 , H02P8/10 , H02P8/12
CPC分类号： H02P8/00 , H02P8/10 , H02P8/12
摘要： A switching regulator causes a supply voltage to be intermittently chopped to provide energy pulses in a lowpass filter circuit. The lowpass filter circuit includes a capacitor which is being charged by the chopped energy pulses and whose output is used to drive a low voltage stepper motor. The duty cycle of the energy pulses is a function of the average value of the stepper motor coil current. By correlating the duty cycle of the energy pulses with the average current in the motor coil a relatively high torque is provided to drive the motor during a startup phase and is automatically adjusted to meet the running requirements of the particular stepper motor.
摘要翻译：开关调节器使得电源电压被间歇地切断以在低通滤波器电路中提供能量脉冲。低通滤波器电路包括由斩波能量脉冲充电并且其输出用于驱动低压步进电机的电容器。能量脉冲的占空比是步进电机线圈电流的平均值的函数。通过将能量脉冲的占空比与电动机线圈中的平均电流相关联，提供相对较高的转矩以在启动阶段驱动电动机，并且被自动调整以满足特定步进电机的运行要求。

3. 发明授权

US4620187A Transformer coupled, solid state communications line switch 失效
标题翻译：变压器耦合，固态通信线路开关
公开(公告)号：US4620187A
公开(公告)日：1986-10-28
申请号：US680621
申请日：1984-12-11
申请人： David E. Conner
发明人： David E. Conner
IPC分类号： H03K17/00 , H04L12/42 , H04Q3/00 , H04B3/00 , H04J3/00 , H04J3/02
CPC分类号： H04L12/42
摘要： A plurality of signal coupling transformers and a plurality of solid state switches are used to insert and/or de-insert data terminal equipment (DTE) from a communications network. The solid state switches are controlled to short the output of selected transformers thereby allowing signals on the communications network to bypass the DTE and/or to be switched into the DTE. The DTE may also loop electrical signals from its output to its input.
摘要翻译：多个信号耦合变压器和多个固态开关用于从通信网络插入和/或取消插入数据终端设备（DTE）。控制固态开关以缩短所选变压器的输出，从而允许通信网络上的信号绕过DTE和/或切换到DTE。 DTE还可以将电信号从其输出回送到其输入。

4. 发明授权

US4814634A Ternary signal multiplexor circuit 失效
标题翻译：三进制信号多路复用器电路
公开(公告)号：US4814634A
公开(公告)日：1989-03-21
申请号：US100061
申请日：1987-09-23
申请人： Paul Abramson , David E. Conner , Lee C. Haas
发明人： Paul Abramson , David E. Conner , Lee C. Haas
IPC分类号： H04J3/00 , H03K17/16 , H03K17/60 , H03K17/62 , H04J3/02 , H04J3/04 , H03K17/56 , H04L5/16
CPC分类号： H03K17/16 , H03K17/601 , H03K17/6242
摘要： The multiplexing circuit disclosed herein combines multiple input signals into a common output by allowing ternary signals to pass from multiple input circuits to a common output circuit. The circuit combines ternary signals with minimum feedback between input circuits. The circuit is passive, has minimum attenuation, and a small number of components.

5. 外观设计

USD386916S Manual assembly work station 失效
公开(公告)号：USD386916S
公开(公告)日：1997-12-02
申请号：US59025
申请日：1996-08-30
申请人： David E. Conner
设计人： David E. Conner

6. 发明授权

US4224684A Receive/bypass circuit for subsystems in polling system 失效
标题翻译：轮询系统中子系统的接收/旁路电路
公开(公告)号：US4224684A
公开(公告)日：1980-09-23
申请号：US944960
申请日：1978-09-22
申请人： David E. Conner , Charles R. Hoffman , Melvin T. Laakso
发明人： David E. Conner , Charles R. Hoffman , Melvin T. Laakso
IPC分类号： G06F13/00 , G06F11/20 , H04L12/423 , H04L12/437 , H03K17/60 , H04Q1/20
CPC分类号： H04L12/423 , G06F11/20 , H04L12/437
摘要： A polling system includes a central processor and a plurality of subsystems connected in a loop to the central processor. A receive/bypass circuit in each subsystem includes a depletion mode field effect transistor having its drain and source electrodes connected in series in a bypass line at the subsystem. A control circuit is connected to a polling signal input line at each subsystem. When the subsystem has power, the control circuit routes the polling signal to a terminal device in the subsystem while establishing a conduction-inhibiting voltage at the gate electrode of the field effect transistor. When the subsystem is unpowered or out of service, a switching transistor in the control circuit isolates the terminal device from the polling signal input line. The polling signal bypasses an unpowered subsystem through the unbiased field effect transistor in the bypass line.
摘要翻译：轮询系统包括中央处理器和以循环连接到中央处理器的多个子系统。每个子系统中的接收/旁路电路包括耗尽型场效应晶体管，其漏极和源电极串联连接在子系统的旁路线路中。控制电路连接到每个子系统的轮询信号输入线。当子系统具有电源时，控制电路将轮询信号路由到子系统中的终端设备，同时在场效应晶体管的栅电极处建立导通抑制电压。当子系统无功或不工作时，控制电路中的开关晶体管将终端设备与轮询信号输入线隔离。轮询信号通过旁路线路中的无偏置场效应晶体管旁路无功子系统。

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