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1. 发明申请

WO1982002307A1 ON-HOOK/OFF-HOOK DETECTOR CIRCUIT 审中-公开
标题翻译：挂钩/离线检测电路
公开(公告)号：WO1982002307A1
公开(公告)日：1982-07-08
申请号：PCT/US1980001699
申请日：1980-12-22
申请人： MOSTEK CORP , DAVIS HAROLD LOUIS
发明人： MOSTEK CORP
IPC分类号： H04M03/22
CPC分类号： H04M3/2272 , H04M1/82
摘要： An on-hook/off-hook detector circuit (10) is included within a telecommunication integrated circuit. A tone generator power signal (V u) is monitored as a status signal to determined when a telephone switch hook is in either an on-hook or off-hook condition. The tone generator power signal is subject to interference and transients which prevents direct utilization of it to indicate on-hook and off-hook conditions. A resistor (20) and capacitor (22) are connected externally to the circuit (10) at a junction terminal (16) to provide a time delay following a transition of the status signal (V u). The junction terminal of the resistor (20) and capacitor (22) is held at two transistor threshold voltages below the upper supply voltage (V +). At the time of transitions of the status signal CV u the junction terminal (16) is disconnected from a current path such that the terminal (16) is permitted to charge the capacitor (22) through the resistor (20). When the capacitor (22) has charged up to within one threshold voltage of the positive power terminal (V +) a transistor (48) is turned off thereby permitting the on-hook signal at line (50) to be driven negative thereby reliably indicating that the switch hook has been placed in the on-hook condition. The charging of the capacitor (22) serves as a time delay to eliminate faulty signal indications derived from noise and transients associated with the status signal (V u).
摘要翻译：一个挂机/摘机检测电路（10）被包括在电信集成电路内。监听音调发生器功率信号（V uu u）作为状态信号，以确定电话切换钩何时处于挂机或摘机状态。音调发生器功率信号受到干扰和瞬变，防止其直接使用以指示挂机和摘机状况。电阻器（20）和电容器（22）在接线端子（16）处外部连接到电路（10），以在状态信号（V u> u）的转变之后提供时间延迟。电阻器（20）和电容器（22）的接线端子保持在低于上电源电压（V +）的两个晶体管阈值电压。在状态信号CV 的转换时，接线端子（16）与电流路径断开，使得端子（16）被允许通过电阻器（20）对电容器（22）充电。当电容器（22）已经充电到正电源端子（V +）的一个阈值电压内时，晶体管（48）被断开，从而允许线路（50）处的挂机信号被驱动为负，从而可靠地指示开关钩已经处于挂机状态。电容器（22）的充电用作时间延迟，以消除从与状态信号（V u> u）相关联的噪声和瞬变导出的故障信号指示。

2. 发明申请

WO2004030198A3 MAGNETIC LEVITATION APPARATUS 审中-公开
标题翻译：磁悬浮装置
公开(公告)号：WO2004030198A3
公开(公告)日：2004-06-03
申请号：PCT/CA0301501
申请日：2003-09-29
申请人： UNIV BRITISH COLUMBIA , DAVIS HAROLD , WHITEHEAD LORNE
发明人： DAVIS HAROLD , WHITEHEAD LORNE
IPC分类号： A63H33/26 , F16C39/06 , H02N15/00
CPC分类号： F16C32/044 , A63H33/26 , B60L13/04 , F21V21/096 , F21V23/02 , H02N15/00 , H02N15/02
摘要： A magnetic levitation apparatus supports a magnetic element in a magnetic field. A control system controls a variable magnetic field to maintain the magnetic element at an equilibrium location relative to an unstable axis. In some embodiments the variable magnetic field has a gradient in the direction of the unstable axis but no field component. In some embodiments the magnetic field is provided by an array of four discrete magnets. In some embodiments additional magnets provide increased field intensity at the equilibrium location this increases stability of the levitated magnetic element against overturning. Light and electrical power may be supplied to the levitating magnetic element.
摘要翻译：磁悬浮装置在磁场中支撑磁性元件。控制系统控制可变磁场以将磁性元件相对于不稳定轴保持在平衡位置。在一些实施例中，可变磁场在不稳定轴的方向上具有梯度，但是没有场分量。在一些实施例中，磁场由四个离散磁体的阵列提供。在一些实施例中，额外的磁体在平衡位置处提供增加的场强度，这增加了悬浮磁性元件抗倾覆的稳定性。可以向悬浮磁性元件提供光和电力。

3. 发明申请

WO2004030198A2 MAGNETIC LEVITATION APPARATUS 审中-公开
标题翻译：磁力诱导装置
公开(公告)号：WO2004030198A2
公开(公告)日：2004-04-08
申请号：PCT/CA2003/001501
申请日：2003-09-29
申请人： THE UNIVERSITY OF BRITISH COLUMBIA , DAVIS, Harold , WHITEHEAD, Lorne
发明人： DAVIS, Harold , WHITEHEAD, Lorne
IPC分类号： H02N15/00
CPC分类号： F16C32/044 , A63H33/26 , B60L13/04 , F21V21/096 , F21V23/02 , H02N15/00 , H02N15/02
摘要： A magnetic levitation apparatus supports a magnetic element in a magnetic field. A control system controls a variable magnetic field to maintain the magnetic element at an equilibrium location relative to an unstable axis. In some embodiments the variable magnetic field has a gradient in the direction of the unstable axis but no field component. In some embodiments the magnetic field is provided by an array of four discrete magnets. In some embodiments additional magnets provide increased field intensity at the equilibrium location this increases stability of the levitated magnetic element against overturning. Light and electrical power may be supplied to the levitating magnetic element.
摘要翻译：磁悬浮装置在磁场中支撑磁性元件。控制系统控制可变磁场以将磁性元件保持在相对于不稳定轴线的平衡位置。在一些实施例中，可变磁场在不稳定轴线的方向上具有梯度，但是没有场分量。在一些实施例中，磁场由四个分立磁体的阵列提供。在一些实施例中，额外的磁体在平衡位置处提供增加的磁场强度，这增加了悬浮的磁性元件抵抗翻转的稳定性。光和电功率可以提供给悬浮磁性元件。

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