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    • 11. 发明授权
    • Alarm system incorporating dynamic range testing
    • 包含动态范围测试的报警系统
    • US4777473A
    • 1988-10-11
    • US899548
    • 1986-08-22
    • Lance WestonHarry D. Schweiger
    • Lance WestonHarry D. Schweiger
    • G08B29/14G08B29/00
    • G08B29/14
    • An alarm system incorporating a dynamic range testing feature whereby the system polls and tests, on a regular basis, the resistance of the circuits of alarm condition resistor elements in the alarm system, primarily to detect when the circuit of a resistor element has degraded to a pre-trouble resistance range, such that the circuit of the resistor element can be serviced and repaired prior to its degrading to a point which will trigger the alarm system. The alarm system includes a central control system, and a plurality of modules at potential alarm locations coupled by a pair of connecting lines to the central control system. Each module includes two alarm condition resistor elements associated therewith for detecting an alarm condition, which is indicated by an increase in the electrical resistance thereof, as by the opening of a switch or the breakage of a resistor element, and each module further includes a reference resistor which is provided for a reference measurement. The central control system measures the resistance of the connecting line with the reference resistor coupled thereto to enable the resistance of the connecting line to be determined. The central control system also measures the resistance of the connecting line with each alarm condition element coupled thereto during different time subperiods, to enable the resistance of each alarm condition element circuit to be determined separately.
    • 一种包含动态范围测试功能的报警系统,其系统轮询和测试报警系统中报警状态电阻元件的电路的电阻,主要是检测电阻元件的电路何时已经降至 预防电阻范围,使得电阻元件的电路在其降级到将触发报警系统的点之前可以被维修和修理。 报警系统包括中央控制系统,以及通过一对连接线耦合到中央控制系统的潜在报警位置处的多个模块。 每个模块包括与其相关联的两个报警状态电阻器元件,用于检测报警状态,其由电阻的增加指示,如通过开关的断开或电阻元件的断裂,并且每个模块还包括参考 提供给参考测量的电阻器。 中央控制系统测量与连接到其上的参考电阻的连接线的电阻,以确定连接线的电阻。 中央控制系统还在不同的时间次周期期间测量与连接到其上的每个报警条件元件的连接线的电阻,以便分别确定每个报警条件元件电路的电阻。
    • 12. 发明授权
    • Audible alarm apparatus particularly adaptable for use with fire and
theft security systems
    • 声音报警装置特别适用于防火和盗窃安全系统
    • US4100543A
    • 1978-07-11
    • US765539
    • 1977-02-04
    • Roy StockdaleLance Weston
    • Roy StockdaleLance Weston
    • G08B3/10G08B19/00
    • G08B19/005G08B3/10
    • The alarms circuit provides a first signal indicative of a fire alarm and a second signal indicative of another intrusion such as a burglary. The circuit includes a high frequency RC oscillator which undesireably possesses a duty cycle different from fifty percent. The oscillator output is divided by a bistable multivibrator to produce at an output, a divided signal having a fifty percent duty cycle for application to a loud speaker to energize the same efficiently due to the proper duty cycle. In a burglary mode, the oscillator frequency is modulated by a sawtooth developed by a second bistable multivibrator to provide a wailing tone signal indicative of a burglary. This signal is also divided to produce a proper duty cycle signal for application to the loud speaker.
    • 警报电路提供指示火灾警报的第一信号和指示另一入侵的第二信号,例如盗窃。 该电路包括高频RC振荡器,其不适合地具有不同于百分之五十的占空比。 振荡器输出由双稳态多谐振荡器分压,以在输出端产生一个分频信号,占空比为百分之五十,用于应用于扬声器,由于适当的占空比而有效地对其进行激励。 在盗窃模式中,振荡器频率被由第二双稳态多谐振荡器开发的锯齿调制,以提供指示入室盗窃的哭音信号。 该信号也被划分以产生适用于扬声器的适当占空比信号。
    • 13. 发明授权
    • Input transient protection for electronic devices
    • 输入电子设备的瞬态保护
    • US07885083B2
    • 2011-02-08
    • US10750385
    • 2003-12-31
    • Lance WestonEdward L. FontanaLarry A. Sternstein
    • Lance WestonEdward L. FontanaLarry A. Sternstein
    • H05K1/11H05K1/14
    • H05K1/0257H05K1/181H05K2201/10022H05K2201/10522H05K2201/10636Y02P70/611
    • A circuit board assembly which includes an electrically insulating layer, a conductive printed wiring layer formed on the surface of the electrically insulating layer and includes a plurality of conductive paths, a conductive trace on the electrically insulating layer and apparatus for dissipating a transient in addition to a surface mount resistor fixed in relation to the trace. In some forms of the invention the surface mount resistor has opposed generally planar lips. The trace may also be generally planar. In some cases the lower lips and the trace are generally parallel. The generally planar lips of the surface mount resistor may be closer to the trace than the thickness of the surface mount resistor. A single geometric plane may extend through substantially all of the lips and all of the trace. In some cases the lower surface of the lips and the lower surface of the trace are substantially coplanar. In some cases the upper surface of the lower lip and the upper surface of the trace are substantially coplanar. In other cases the lower surface of the lower lip and the lower surface of the trace are substantially coplanar and in addition the upper surface of the lip and the upper surface of the trace are substantially coplanar.
    • 一种电路板组件,其包括电绝缘层,形成在所述电绝缘层的表面上的导电印刷布线层,并且包括多个导电路径,所述电绝缘层上的导电迹线以及用于耗散瞬态的装置, 相对于迹线固定的表面贴装电阻器。 在本发明的一些形式中,表面安装电阻器具有相对的大致平面的唇缘。 痕迹也可以是平面的。 在某些情况下,下唇和痕迹通常是平行的。 表面贴装电阻器的大致平面的唇缘可能比表面贴装电阻器的厚度更接近走线。 单个几何平面可以延伸穿过基本上所有的嘴唇和所有的痕迹。 在一些情况下,唇缘的下表面和迹线的下表面基本上是共面的。 在一些情况下,下唇的上表面和迹线的上表面基本上是共面的。 在其他情况下,下唇的下表面和迹线的下表面基本上共面,此外,唇缘的上表面和迹线的上表面基本上是共面的。
    • 14. 发明授权
    • Integrated alarm and touch tone telephone system
    • 集成报警和触摸音电话系统
    • US4791658A
    • 1988-12-13
    • US883709
    • 1986-07-09
    • Theodore SimonLance WestonGeorge P. Berg
    • Theodore SimonLance WestonGeorge P. Berg
    • H04M11/04
    • H04M11/045
    • A microprocessor controlled integrated alarm and touch tone telephone system which allows the alarm system to be accessed, programmed, and reported upon through a touch tone telephone, either locally or remotely. Under most circumstances, the telephones on the premises can be operated in a normal manner. However, the alarm system selectively monitors the telephone activities for coded touch tone instructions specifically for the alarm system, and responds thereto by issuing synthesized voice reports on the status of the alarm system. A touch tone decoder circuit decodes dialed touch tones, such that the telephone can be utilized similar to a normal keyboard panel to access and control the alarm system. An internal power supply is provided for the telephone for supplying electrical power thereto independently of the outside telephone lines which normally supply power, in the event the outside telephone lines are inoperative. A ring detector circuit is provided for detecting the presence of a ring voltage across the outside telephone lines, and the microprocessor is responsive to a detected ring voltage to disconnect the telephone from the internal power supply and connect it to the outside telephone lines for normal ringing and usage of the telephone. The microprocessor counts the number of rings by which the telephone is being contacted by an off-premises telephone, and after a given number of rings, answers the telephone to allow the user of the off-premises telephone to dial touch tone encoded instructions into the integrated system and to receive voice synthesized reports therefrom.
    • 微处理器控制的集成报警和触摸音电话系统,允许通过本地或远程的触摸式电话来访问,编程和报告报警系统。 在大多数情况下,房屋内的电话可以正常运行。 然而,报警系统选择性地监视针对报警系统的编码的触摸音指令的电话活动,并通过发出关于报警系统的状态的合成语音报告来对其进行响应。 触摸音解码器电路解码拨号的触摸音,使得电话可以类似于普通键盘面板被利用来访问和控制报警系统。 在外部电话线不工作的情况下,为电话提供内部电源,独立于通常供电的外部电话线路供电。 提供环形检测器电路,用于检测外部电话线路上是否存在环形电压,并且微处理器响应于检测到的环形电压以将电话与内部电源断开并将其连接到外部电话线路以进行正常振铃 和使用电话。 微处理器计算外部电话与电话联系的振铃次数,并且在给定数量的振铃之后,应答电话以允许室外电话的用户将触摸音编码的指令拨入 集成系统并从其接收语音合成报告。
    • 16. 发明申请
    • Camera theft detection system
    • 相机盗窃检测系统
    • US20050226338A1
    • 2005-10-13
    • US10818413
    • 2004-04-05
    • Lance WestonPiotr RomanczykTony Li
    • Lance WestonPiotr RomanczykTony Li
    • G08B13/196H04N7/12
    • G08B13/19676G08B13/19645G08B13/19669
    • Image data from a video surveillance camera is moved from a volatile memory such as a circular buffer to a non-volatile memory such as a flash memory when a loss of signal from the camera is detected. The loss of signal may occur when an intruder disables the system such as by cutting a cable, by vandalizing the camera so that it no longer can transmit image data, or removing the camera altogether. The loss of signal is detected by determining whether a signal portion such as a start of active video code, end of active video code, or horizontal or vertical blanking interval, is present on a communication path of the camera. The system ensures that an image of the intruder is captured and stored before the system is disabled. Analog signals from the camera may be digitized for storage.
    • 当检测到来自相机的信号丢失时,来自视频监控摄像机的图像数据从诸如循环缓冲器的易失性存储器移动到诸如闪存的非易失性存储器。 当入侵者通过切断电缆来禁用系统时,可能会发生信号丢失,通过破坏摄像机,使其不再能够传输图像数据,或完全删除摄像机。 通过确定在相机的通信路径上是否存在诸如活动视频码的开始,活动视频码的结束或水平或垂直消隐间隔的信号部分来检测信号的丢失。 系统确保在系统被禁用之前捕获和存储入侵者的图像。 来自相机的模拟信号可以被数字化以便存储。
    • 18. 发明申请
    • System and method for extending universal bus line length
    • 扩展通用总线长度的系统和方法
    • US20070170953A1
    • 2007-07-26
    • US11434458
    • 2006-05-15
    • Lance WestonTony LiJohn Ryan
    • Lance WestonTony LiJohn Ryan
    • H03K19/003
    • G06F13/4072H04B1/62H04B3/06
    • A system and method for recovering a high frequency component of a slew rate controlled signal propagating along a transmission line enables the high frequency component to be recovered after being lost because of slew rate control and transmission line low pass filtering effects. The system includes a wave shaping circuit for receiving and shaping the slew rate controlled signal to recover the high frequency component. The method includes receiving the slew rate controlled signal, and recovering the high frequency component by shaping the slew rate controlled signal to produce a shaped signal, where the shaped signal includes the received slew rate controlled signal and the high frequency component.
    • 用于恢复沿着传输线传播的转换速率控制信号的高频分量的系统和方法使得能够在由于压摆率控制和传输线低通滤波效应而在丢失之后恢复高频分量。 该系统包括波形整形电路,用于接收和整形转换速率控制信号以恢复高频分量。 该方法包括接收压摆率控制信号,并通过整形转换速率控制信号来恢复高频分量,以产生成形信号,其中成形信号包括接收转换速率控制信号和高频分量。
    • 19. 发明申请
    • Feedback circuit for line load compensation and reflection reduction
    • 用于线路负载补偿和反射减少的反馈电路
    • US20070164779A1
    • 2007-07-19
    • US11324095
    • 2005-12-30
    • Lance WestonRichard HinksonDavid Mole
    • Lance WestonRichard HinksonDavid Mole
    • H03K17/16
    • H04L25/0272H04L25/0298
    • Line load compensation and reflection reduction in a signal transmitting circuit is provided using feedback capacitors. The feedback capacitor serially coupled with a resistance generates an RC rise/fall time that is independent of the line load. Additionally, by selecting a capacitor that yields a rise/fall time of approximately ⅓ of the maximum bit transmission time, signal reflection on the signal line can be reduced. Accordingly, by incorporating the feedback capacitor with a differential drive circuit, such as the IB 485 driver, variations in line load can be compensated for while also reducing signal reflection due to un-terminated or improperly terminated signal lines, thus allowing a free topology implementation.
    • 使用反馈电容器提供信号发送电路中的线路负载补偿和反射减少。 与电阻串联耦合的反馈电容产生独立于线路负载的RC上升/下降时间。 此外,通过选择产生大于最大位传输时间的1/3的上升/下降时间的电容器,可以减少信号线上的信号反射。 因此,通过将反馈电容器与诸如IB485驱动器的差分驱动电路并入,可以补偿线路负载的变化,同时还减少由于未终止或不正确终止的信号线引起的信号反射,从而允许自由拓扑实现 。
    • 20. 发明申请
    • Input transient protection for electronic devices
    • 输入电子设备的瞬态保护
    • US20050139385A1
    • 2005-06-30
    • US10750385
    • 2003-12-31
    • Lance WestonEdward FontanaLarry Sternstein
    • Lance WestonEdward FontanaLarry Sternstein
    • H05K1/02H05K1/18H05K7/06
    • H05K1/0257H05K1/181H05K2201/10022H05K2201/10522H05K2201/10636Y02P70/611
    • A circuit board assembly which includes an electrically insulating layer, a conductive printed wiring layer formed on the surface of the electrically insulating layer and includes a plurality of conductive paths, a conductive trace on the electrically insulating layer and apparatus for dissipating a transient in addition to a surface mount resistor fixed in relation to the trace. In some forms of the invention the surface mount resistor has opposed generally planar lips. The trace may also be generally planar. In some cases the lower lips and the trace are generally parallel. The generally planar lips of the surface mount resistor may be closer to the trace than the thickness of the surface mount resistor. A single geometric plane may extend through substantially all of the lips and all of the trace. In some cases the lower surface of the lips and the lower surface of the trace are substantially coplanar. In some cases the upper surface of the lower lip and the upper surface of the trace are substantially coplanar. In other cases the lower surface of the lower lip and the lower surface of the trace are substantially coplanar and in addition the upper surface of the lip and the upper surface of the trace are substantially coplanar.
    • 一种电路板组件,其包括电绝缘层,形成在所述电绝缘层的表面上的导电印刷布线层,并且包括多个导电路径,所述电绝缘层上的导电迹线以及用于耗散瞬态的装置, 相对于迹线固定的表面贴装电阻器。 在本发明的一些形式中,表面安装电阻器具有相对的大致平面的唇缘。 痕迹也可以是平面的。 在某些情况下,下唇和痕迹通常是平行的。 表面贴装电阻器的大致平面的唇缘可能比表面贴装电阻器的厚度更接近走线。 单个几何平面可以延伸穿过基本上所有的嘴唇和所有的痕迹。 在一些情况下,唇缘的下表面和迹线的下表面基本上是共面的。 在一些情况下,下唇的上表面和迹线的上表面基本上是共面的。 在其他情况下,下唇的下表面和迹线的下表面基本上共面,此外,唇缘的上表面和迹线的上表面基本上是共面的。