Method and apparatus for testing fiber optic hubs
    1.
    发明授权
    Method and apparatus for testing fiber optic hubs 失效
    光纤集线器测试方法和设备

    公开(公告)号:US4850045A

    公开(公告)日:1989-07-18

    申请号:US115669

    申请日:1987-11-02

    申请人: Klaus E. Funke

    发明人: Klaus E. Funke

    CPC分类号: H04B10/07

    摘要: A fiber optic hub (10) for local area networks (15, 35) and other data communication systems including an internal self-diagnostic and cable test capability for permitting off-line testing of the hub (10) and of fiber optic cables connected to the hub (10). The hub (10) includes a plurality of optical interfaces (30a-30p) each having an optical receiver section (36) and an optical transmitter section (37) and hub-processing circuitry (32) connected to the optical interfaces (30a-30p) for processing data signals received by the optical receiver sections (36) and for providing the processed data signals to the transmitter sections (37) to be transmitted back through the network (15, 35) thereby. Hub (10) further includes a test signal source (61) for generating a test signal to be transmitted from the transmitter sections (36) of one or all of the optical interfaces (30a-30p), and a test signal detector (80) connected to the receiver sections ( 37) of the interfaces (30a-30p) for detecting a test signal received by any of the receiver sections (37) and for generating an error indicator signal when the received test signal differs from the transmitted test signal. The transmitter and receiver sections (36, 37) of any hub optical interface (30a-30p) can be conveniently tested by looping a fiber optic cable from a transmitter section (37) of any optical interface (30a-30p) to the receiver section (37) of any other optical interface (30a-30p) and monitoring an error indicator (LED) (80) illuminated by the error indicator signal. The hub (10) also provides a convenient means for testing fiber optic cable connected to the hub (10).

    Subscriber RF telephone system having distributed channel switching
capability
    2.
    发明授权
    Subscriber RF telephone system having distributed channel switching capability 失效
    具有分布式信道切换能力的用户RF电话系统

    公开(公告)号:US5918171A

    公开(公告)日:1999-06-29

    申请号:US765985

    申请日:1997-12-10

    IPC分类号: H04W84/14 H04Q7/00

    CPC分类号: H04W84/14

    摘要: A radio communication system for processing information signals received from telephone trunk lines for transmission over a plurality of RF subscriber channels. The system includes a network interface exchange for sampling the received information signals and for sequentially combining the resulting sampled information signals into a multiplexed transmit channel bit stream, each of the sampled information signals occupying a repetitive slot position in the multiplexed transmit channel bit steam. The network interface exchange further includes a processor for assigning a first of the sampled information signals from one of the trunk lines to the repetitive slot position corresponding to a first of the RF subscriber channels associated with a call request signal received over the one trunk line. A transmitter is provided for transmitting a forward interface signal over a network interface channel in response to the multiplexed channel bit stream. The system further includes a remove telephone exchange, in RF communication with the network interface exchange over the network interface channel, for extracting the first sampled information signal from the forward interface signal. The remote telephone exchange also generates a first subscriber signal on the basis of the extracted first sampled information signal, and transmits the first subscriber signal over the first RF subscriber channel to a first intelligent subscriber unit.

    摘要翻译: PCT No.PCT / US95 / 07868 Sec。 371 1997年12月10日第 102(e)日期1997年12月10日PCT提交1995年6月30日PCT公布。 公开号WO96 / 01543 日期1996年1月18日一种用于处理从电话干线接收的信息信号用于通过多个RF用户信道传输的无线电通信系统。 该系统包括用于对接收到的信息信号进行采样的网络接口交换机,并且将所得到的采样信息信号顺序组合成复用的发送信道位流,每个采样信息信号占据多路复用发送信道位蒸汽中的重复时隙位置。 网络接口交换机还包括一个处理器,用于将一个采样的信息信号从一条干线分配给与第一个RF用户信道相对应的重复时隙位置,该第一个RF用户信道与一条干线上接收的一个呼叫请求信号相关联。 发射机被提供用于响应于多路复用信道比特流通过网络接口信道发送前向接口信号。 该系统还包括与网络接口信道上的网络接口交换进行RF通信的移除电话交换机,用于从前向接口信号中提取第一采样信息信号。 远程电话交换机还根据所提取的第一采样信息信号产生第一用户信号,并通过第一RF用户信道将第一用户信号发送到第一智能用户单元。

    Subscriber RF telephone system having distributed channel switching capability
    3.
    再颁专利
    Subscriber RF telephone system having distributed channel switching capability 失效
    具有分布式信道切换能力的用户RF电话系统

    公开(公告)号:USRE37571E1

    公开(公告)日:2002-03-05

    申请号:US09579375

    申请日:2000-05-23

    IPC分类号: H04Q720

    CPC分类号: H04W84/14

    摘要: A radio communication system for processing information signals received from telephone trunk lines for transmission over a plurality of RF subscriber channels is disclosed. The system includes a network interface exchange for sampling the received information signals and sequentially combining the resultant plurality of sampled information signals into one or more multiplexed transmit channel bit streams. The network interface exchange includes a processor for assigning a first of the sampled information signals from one of the trunk lines to an available repetitive slot position of a first of the transmit channel bit streams provided to a first destination node associated with the first of the sampled information signals, the first destination node being determined in accordance with subscriber unit identification information received over the trunk line. A transmitter transmits a forward interface signal to the first destination node over a network interface channel in response to the first multiplexed channel bit stream. The system includes a remote telephone exchange, in RF communication with the network interface exchange over the network interface channel, corresponding to the first destination node and located distal from the network interface exchange. The remote telephone exchange extracts the first sampled information signal from the forward interface signal, generates a first subscriber signal, transmits the first subscriber signal over the first RF subscriber channel to a first subscriber unit, and can route reverse link signals from the first subscriber unit to a second destination node independently of the network interface exchange.

    摘要翻译: 公开了一种用于处理从电话干线接收的信息信号以用于在多个RF用户信道上传输的无线电通信系统。 该系统包括用于对接收的信息信号进行采样的网络接口交换机,并且将所得到的多个采样的信息信号顺序地组合成一个或多个复用的发送信道比特流。 网络接口交换机包括一个处理器,用于将一个采样的信息信号从一条干线分配到提供给第一个目的地节点的第一个发射信道比特流的第一个可用重复时隙位置,该第一个目的地节点与第一个采样 信息信号,所述第一目的地节点根据通过所述中继线接收的用户单元识别信息来确定。 发射机响应于第一多路复用信道比特流,经由网络接口​​信道向第一目的地节点发送前向接口信号。 该系统包括远程电话交换机,与通过网络接口信道的网络接口交换进行RF通信,对应于第一目的地节点并远离网络接口交换。 远程电话交换机从前向接口信号中提取第一采样信息信号,生成第一用户信号,通过第一RF用户信道将第一用户信号发送到第一用户单元,并且可以将来自第一用户单元的反向链路信号 独立于网络接口交换到第二目的地节点。

    Subscriber RF telephone system having distributed channel switching
capability

    公开(公告)号:US5845201A

    公开(公告)日:1998-12-01

    申请号:US270027

    申请日:1994-07-01

    IPC分类号: H04W84/14 H04Q7/20

    CPC分类号: H04W84/14

    摘要: A radio communication system for processing information signals received from telephone trunk lines for transmission over a plurality of RF subscriber channels is disclosed. The system includes a network interface exchange for sampling the received information signals and sequentially combining the resultant plurality of sampled information signals into one or more multiplexed transmit channel bit streams. The network interface exchange includes a processor for assigning a first of the sampled information signals from one of the trunk lines to an available repetitive slot position of a first of the transmit channel bit streams provided to a first destination node associated with the first of the sampled information signals, the first destination node being determined in accordance with subscriber unit identification information received over the trunk line. A transmitter transmits a forward interface signal to the first destination node over a network interface channel in response to the first multiplexed channel bit stream. The system includes a remote telephone exchange, in RF communication with the network interface exchange over the network interface channel, corresponding to the first destination node and located distal from the network interface exchange. The remote telephone exchange extracts the first sampled information signal from the forward interface signal, generates a first subscriber signal, transmits the first subscriber signal over the first RF subscriber channel to a first subscriber unit, and can route reverse link signals from the first subscriber unit to a second destination node independently of the network interface exchange.

    Polishing fixture and method for polishing light emitting devices
    5.
    发明授权
    Polishing fixture and method for polishing light emitting devices 失效
    抛光灯具和抛光发光器件的方法

    公开(公告)号:US5243791A

    公开(公告)日:1993-09-14

    申请号:US617447

    申请日:1990-11-26

    申请人: Klaus E. Funke

    发明人: Klaus E. Funke

    IPC分类号: B24B19/22

    CPC分类号: B24B19/226

    摘要: A polishing fixture (10) and method of using the polishing fixture are disclosed. The polishing fixture (10) comprises a first and second clamping member (12, 14) for releasably securing therebetween a plurality of light emitting devices (30, 32, 34). The leads of the devices (30, 32, 34) pass through one of the clamping members (12), with a forward end (50) of the devices (30, 32, 34) passing through apertures in the other clamping member (14). The clamping members (12, 14) are releasably secured together (16, 18), securing the devices (30, 32, 34) therebetween with a forward end surface (70) of each of the devices (30, 32, 34) spaced from an outside surface (38) of a clamping member (14) for polishing.

    摘要翻译: 公开了一种抛光夹具(10)及其使用方法。 抛光夹具(10)包括用于可释放地固定在其间的多个发光器件(30,32,34)的第一和第二夹紧构件(12,14)。 装置(30,32,34)的引线穿过夹紧构件(12)中的一个,其中装置(30,32,34)的前端(50)穿过另一夹紧构件(14)中的孔 )。 夹紧构件(12,14)可释放地固定在一起(16,18),将装置(30,32,34)固定在其间,每个装置(30,32,34)的前端表面(70)间隔开 来自用于抛光的夹紧构件(14)的外表面(38)。

    Optical interface
    6.
    发明授权
    Optical interface 失效
    光接口

    公开(公告)号:US4903338A

    公开(公告)日:1990-02-20

    申请号:US368134

    申请日:1989-06-16

    申请人: Klaus E. Funke

    发明人: Klaus E. Funke

    摘要: An optical interface which is adapted for use in a local area network is provided. The optical interface comprises an optical transmitter section and an optical receiver section. The optical transmitter section receives data in a non-return to zero inverted (NRZI) format from a LAN controller which the optical interface is part of a remote node. The optical transmitter section converts the non-return to zero inverted data to an alternate mark insertion (AMI) format. An LED driver circuit smooths out and extends the alternate mark insertion data and uses it to drive an LED. The LED driver alternately drives the LED from a fifty percent reference output level to zero percent output and one hundred percent output corresponding to alternate positive-going and negative-going transition of the data. The optical receiver section has a light sensitive detector and preamplifier which receives optical signals encoded with digital data and generates corresponding electrical signals. The electrical signals are processed by a peak pulse detector which is preferably a disk detector of the type used to detect signals generated by the read/write heads of magnetic disk media. The disk pulse detector generates unipolar digital signals corresponding to the AMI signals. A decoder converts the unipolar digital pulses to NRZI format. The NRZI data is communicated to a LAN controller when the optical receiver is part of a remote optical interface and to conventional LAN hub circuitry when it is part of a hub optical interface. The LED driver circuit comprises the entire transmitter section of a hub optical interface and receives data for transmission directly from the hub LAN circuitry.

    摘要翻译: 提供适用于局域网的光接口。 光学接口包括光发射机部分和光接收机部分。 光发射机部分从光接口是远程节点的一部分的LAN控制器接收不以归零(NRZI)格式返回的数据。 光发送器部分将不返回零转换数据转换为备用标记插入(AMI)格式。 LED驱动电路平滑并扩展备用标记插入数据,并使用它驱动LED。 LED驱动器将LED从50%的参考输出电平驱动到零百分比输出,百分之百的输出对应于数据的交替的正向和负向转换。 光接收器部分具有光敏检测器和前置放大器,其接收用数字数据编码的光信号并产生相应的电信号。 电信号由峰值脉冲检测器处理,峰值脉冲检测器优选地是用于检测由磁盘介质的读/写头产生的信号的类型的盘检测器。 磁盘脉冲检测器产生对应于AMI信号的单极数字信号。 解码器将单极数字脉冲转换为NRZI格式。 当光接收机是远程光接口的一部分时,NRZI数据被传送到LAN控制器,并且当它是集线器光接口的一部分时传送到常规LAN集线器电路。 LED驱动器电路包括集线器光接口的整个发射机部分,并且接收直接从集线器LAN电路传输的数据。