Time standard assembly with upset protection and recovery means
    2.
    发明授权
    Time standard assembly with upset protection and recovery means 失效
    具有镦粗保护和恢复手段的时间标准组装

    公开(公告)号:US5168478A

    公开(公告)日:1992-12-01

    申请号:US488561

    申请日:1990-03-02

    Inventor: Anthony P. Baker

    CPC classification number: G04G3/00 G04F5/14

    Abstract: A time standard assembly for a global positioning system (GPS), such as for a space vehicle, has a natural-frequency atomic frequency standard (NAFS) which is operated at its natural resonant frequency in order to output an upset-proof natural frequency signal. The assembly includes a frequency synthesizer unit (FSU) and microprocessor data unit (MDU) which are hardened by combining them together and enclosing them in one integral unit which is shielded from the electromagnetic pulse of an upset event. Multiply redundant NAFS, FSUs, and MDUs are used to improve reliability and for maintaining units on-line and in standby. A dithered clock frequency signal is generated by the FSU according to a dither algorithm performed by the MDU, and the MDU generates encoded clock data using the dithered clock frequency signal. The MDU includes an upset recovery mechanism for resetting its registers and counters using the upset-proof natural frequency signal from the NAFS upon detecting the occurrence of an upset event.

    Abstract translation: 用于全球定位系统(GPS)的诸如空间飞行器的时间标准组件具有以其固有谐振频率操作的自然频率原子频率标准(NAFS),以便输出不稳定的固有频率信号 。 该组件包括频率合成器单元(FSU)和微处理器数据单元(MDU),它们通过将它们组合在一起并将其包围在一个整体单元中而被硬化,该整体单元屏蔽了不舒服事件的电磁脉冲。 使用冗余的NAFS,FSU和MDU来提高可靠性并保持在线和待机状态。 根据MDU执行的抖动算法,由FSU生成抖动时钟频率信号,MDU使用抖动时钟频率信号生成编码时钟数据。 MDU包括用于在检测到发生不正常事件时使用来自NAFS的防窜改固有频率信号来复位其寄存器和计数器的镦锻恢复机制。

    Method of fabricating a liquid crystal optical cross point switching
matrix device
    3.
    发明授权
    Method of fabricating a liquid crystal optical cross point switching matrix device 失效
    制造液晶光学交叉点开关矩阵器件的方法

    公开(公告)号:US4773736A

    公开(公告)日:1988-09-27

    申请号:US795138

    申请日:1985-11-05

    Inventor: Anthony P. Baker

    CPC classification number: G02F1/1326

    Abstract: A method for fabricating a liquid crystal optical cross point switching matrix includes the steps of forming a plurality of pedestals, each pedestal defining one half of a liquid crystal optical switching device that operates independent of critical angle alignment of the optical beams associated therewith.

    Abstract translation: 一种制造液晶光学交叉点切换矩阵的方法包括以下步骤:形成多个基座,每个基座限定独立于与其相关联的光束的临界角对准运行的液晶光学开关器件的一半。

    Liquid crystal optical cross point switching device
    4.
    发明授权
    Liquid crystal optical cross point switching device 失效
    液晶光交叉点切换装置

    公开(公告)号:US4749258A

    公开(公告)日:1988-06-07

    申请号:US795148

    申请日:1985-11-05

    Inventor: Anthony P. Baker

    CPC classification number: G02F1/1326

    Abstract: A liquid crystal optical cross point switching device includes first and second liquid crystal optical switches each characterized as having optical fibers spaced apart by liquid crystal material over a length thereof along which the cores of the fibers are exposed.

    Abstract translation: 一种液晶光学交叉点开关装置,包括第一和第二液晶光开关,每个第一和第二液晶光开关的特征在于具有在其长度上与液晶材料隔开的光纤,纤维的芯沿着该光纤开放。

    Polarization independent optical switching device
    5.
    发明授权
    Polarization independent optical switching device 失效
    极化独立光开关器件

    公开(公告)号:US6111633A

    公开(公告)日:2000-08-29

    申请号:US22753

    申请日:1998-02-12

    CPC classification number: G02F1/1326 G02F1/31

    Abstract: The present invention provides for a polarization independent optical switch for selectively switching an optical signal from at least one input port to a preselected one of a plurality of different output ports. The optical switch operates to transmit all of the optical signal from an input port to a predetermined one of the output ports without first segmenting the optical signal into two polarizations.

    Abstract translation: 本发明提供了一种用于选择性地将光信号从至少一个输入端口切换到多个不同输出端口中的预选的光信号的偏振无关光开关。 光开关用于将所有光信号从输入端口传输到预定的一个输出端口,而无需首先将光信号分割成两个偏振。

    Fail-safe port for use with an optical fiber
    6.
    发明授权
    Fail-safe port for use with an optical fiber 失效
    用于光纤的故障安全端口

    公开(公告)号:US4913509A

    公开(公告)日:1990-04-03

    申请号:US795296

    申请日:1985-11-05

    Inventor: Anthony P. Baker

    CPC classification number: G02F1/1326 G02B6/2817

    Abstract: A fail-safe port apparatus includes a low loss liquid crystal optical switching device providing first and second light paths, the first path providing a failure, or default, mode path and the second path providing an operating mode.

    Abstract translation: 故障安全端口装置包括提供第一和第二光路的低损耗液晶光开关装置,第一路径提供故障或默认模式路径,以及提供操作模式的第二路径。

    Liquid crystal wave division device
    7.
    发明授权
    Liquid crystal wave division device 失效
    液晶分波器

    公开(公告)号:US4813769A

    公开(公告)日:1989-03-21

    申请号:US795154

    申请日:1985-11-05

    Inventor: Anthony P. Baker

    CPC classification number: G02F1/1326 G02B27/283

    Abstract: A liquid crystal wave division device includes first and second polarization changing cells, the polarization changing cells utilize homogeneously aligned nematic liquid crystal material to effect the change of polarization of a preselected frequency portion of a multifrequency incident light beam.

    Abstract translation: 液晶波分割装置包括第一和第二偏振改变单元,偏振改变单元利用均匀排列的向列型液晶材料来实现多频入射光束的预选频率部分的偏振变化。

    Liquid crystal optical switching device having minimized internal light
path
    9.
    发明授权
    Liquid crystal optical switching device having minimized internal light path 失效
    具有最小化的内部光路的液晶光学开关装置

    公开(公告)号:US4737019A

    公开(公告)日:1988-04-12

    申请号:US795151

    申请日:1985-11-05

    Inventor: Anthony P. Baker

    CPC classification number: G02F1/1326

    Abstract: A liquid crystal optical switching device includes first and second transparent members configured to minimize both the path length and the number of internal reflections of a light beam traversing the device.

    Abstract translation: 一种液晶光学切换装置,包括第一透明部件和第二透明部件,该第一和第二透明部件被配置为最小化穿过该装置的光束的路径长度和内​​部反射次数。

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