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1. 发明授权

US6087959A Optically coupled gas meter 失效
标题翻译：光耦合气量计
公开(公告)号：US6087959A
公开(公告)日：2000-07-11
申请号：US84551
申请日：1998-05-26
申请人： Charles A. Glorioso
发明人： Charles A. Glorioso
IPC分类号： G01D5/39 , G01F15/06 , H03M1/24 , G08B23/00
CPC分类号： G01F15/06 , G01D5/39 , G01F15/063 , H03M1/245
摘要： A gas meter using optical communication. The meter includes a shaft that is rotated by a flow of gas, a first sensor for sensing a first rotational angle of the shaft, a second sensor for sensing a second rotational angle of the shaft, a first light source operated by the first sensor for issuing a first light signal, and a second light source operated by the second sensor for issuing a second light signal. One or more fiber optic cables carries the light signals to an external meter interface having an optical receiver. A rotation of the shaft is recognizable by the external receiver when first one then the other of the light signals is detected.
摘要翻译：一种使用光通信的气量计。仪表包括通过气流旋转的轴，用于感测轴的第一旋转角的第一传感器，用于感测轴的第二旋转角的第二传感器，由第一传感器操作的第一光源，发出第一光信号，第二光源由第二传感器操作以发出第二光信号。一个或多个光纤电缆将光信号传送到具有光接收器的外部仪表接口。当第一个，然后检测到另一个光信号时，轴的旋转可由外部接收器识别。

2. 发明授权

US5969561A Integrated circuit having a variable RF resistor 失效
标题翻译：具有可变RF电阻的集成电路
公开(公告)号：US5969561A
公开(公告)日：1999-10-19
申请号：US035368
申请日：1998-03-05
申请人： Michael E. McGillan
发明人： Michael E. McGillan
IPC分类号： H03H11/24 , H03K17/62 , H03K17/76 , H04B1/48 , H03K5/08
CPC分类号： H03H11/24 , H03K17/6221 , H03K17/76 , H04B1/48
摘要： A bipolar radio frequency (RF) integrated circuit having a functional equivalent of a PIN diode. The RF integrated circuit includes a low frequency lateral PNP transistor having an emitter having a P+ region, a collector having a P+ region, a base having an N+ region and an N region having a current dependent stored charge having a relatively low level when no current is flowing between the emitter and a junction connecting the base and collector. An RF resistance between the emitter and the junction is controlled by a bias applied from the emitter to the junction. By varying the bias, the low frequency lateral PNP transistor from the emitter to the junction is used as a variable RF resistor or as an RF signal carrying component in a variable attenuator or RF switch.
摘要翻译：具有PIN二极管功能等效的双极射频（RF）集成电路。 RF集成电路包括具有P +区域的发射极，具有P +区域的集电极，具有N +区域的基极和具有电流相关存储电荷的N区域的低频横向PNP晶体管，当没有电流时具有相对低的电平在发射极和连接基极和集电极的连接点之间流动。发射极和结之间的RF电阻由从发射极到结的施加的偏置来控制。通过改变偏置，从发射极到结的低频横向PNP晶体管用作可变RF电阻器，或者用作可变衰减器或RF开关中的RF信号承载元件。

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