Method and apparatus for protecting aircraft electronics from lightning
    1.
    发明授权
    Method and apparatus for protecting aircraft electronics from lightning 失效
    保护飞机电子设备免受雷击的方法和装置

    公开(公告)号:US5991138A

    公开(公告)日:1999-11-23

    申请号:US865775

    申请日:1997-05-30

    CPC classification number: B64D45/02

    Abstract: A lightning protection element is incorporated into the portion of an aircraft signal distribution system which connects an antenna to flight critical equipment. The lightning protection element rejects surge currents associated with direct lightning strikes on the antenna, or its surrounding radome, while passing communication signals without significant interference with those signals. In a preferred embodiment, the lightning protection element comprises an optical fiber isolator element. A segment of optical fiber in the isolator prevents surge currents associated with the lightning strikes from reaching the equipment while passing communications signals transmitted on the signal distribution system.

    Abstract translation: 在将天线连接到飞行关键设备的飞行器信号分配系统的部分中并入雷电保护元件。 雷电保护元件拒绝与天线或其周围天线罩上的直接雷击相关的浪涌电流,同时通过通信信号,而不会对这些信号造成明显的干扰。 在优选实施例中,防雷元件包括光纤隔离元件。 隔离器中的一段光纤防止与雷击相关联的浪涌电流在通过在信号分配系统上传输的通信信号时到达设备。

    Passenger entertainment system having downconverter control signals and power supplied over output cables
    2.
    发明授权
    Passenger entertainment system having downconverter control signals and power supplied over output cables 失效
    乘客娱乐系统具有下变频控制信号和通过输出电缆供电

    公开(公告)号:US06549754B1

    公开(公告)日:2003-04-15

    申请号:US09318370

    申请日:1999-05-25

    CPC classification number: H04H40/90 H04H20/62

    Abstract: An in-flight entertainment system provides live video/audio programming to passengers and operators over an aircraft video/audio distribution system. The programming signals are derived from intermediate frequency (IF) signals that are produced by frequency downconverting satellite broadcast signals and supplied over a pair of IF signal output cables. The control signals and the DC power used in the frequency downconversion process are received over the same IF signal output cables, but in a reverse direction. A bias-T connector is provided in each of the IF signal output cables to extract out the control signals and the DC power.

    Abstract translation: 飞行娱乐系统通过飞机视频/音频分发系统为乘客和运营商提供实时视频/音频节目。 编程信号源自通过下变频卫星广播信号并通过一对IF信号输出电缆提供的中频(IF)信号。 频率下变频过程中使用的控制信号和直流电源通过相同的中频信号输出电缆接收,但反方向。 每个IF信号输出电缆都提供一个偏置T连接器,以提取出控制信号和直流电源。

    Method and apparatus for receiving broadcast entertainment transmissions
at a moving receiver station
    4.
    发明授权
    Method and apparatus for receiving broadcast entertainment transmissions at a moving receiver station 失效
    用于在移动接收站处接收广播娱乐传输的方法和装置

    公开(公告)号:US5990928A

    公开(公告)日:1999-11-23

    申请号:US865816

    申请日:1997-05-30

    CPC classification number: H04H20/62 H01Q1/28 H01Q3/24 H01Q3/2605 H04B7/18508

    Abstract: The disclosure describes a moving receiver station capable of receiving broadcast entertainment signals from a first geostationary satellite associated with a first program provider, or from a second geostationary satellite associated with a second program provider. The receiver station is part of an aircraft and includes a tracking antenna and switching and control system that locks the tracking antenna on either the first or second satellite. The switching and control system receives position information, program attribute information and satellite coverage area information to determine when the aircraft is leaving one coverage area and entering another. The switching and control system switches the antenna to the second satellite when the aircraft enters the second coverage area, and limits the availability of received programming based on whether the aircraft is leaving the first coverage area or entering the second coverage area.

    Abstract translation: 本公开描述了能够从与第一节目提供商相关联的第一对地静止卫星或与第二节目提供者相关联的第二对地静止卫星接收广播娱乐信号的移动接收站。 接收站是飞机的一部分,并且包括跟踪天线和切换和控制系统,其将跟踪天线锁定在第一或第二卫星上。 切换和控制系统接收位置信息,节目属性信息和卫星覆盖区域信息,以确定飞机何时离开一个覆盖区域并进入另一个。 当飞行器进入第二覆盖区域时,切换和控制系统将天线切换到第二卫星,并且基于飞机是否离开第一覆盖区域或进入第二覆盖区域来限制接收的编程的可用性。

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