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    SPREAD SPECTRUM TRANSCEIVER MODULE UTILIZING MULTIPLE MODE TRANSMISSION
    1.
    发明申请
    SPREAD SPECTRUM TRANSCEIVER MODULE UTILIZING MULTIPLE MODE TRANSMISSION 审中-公开
    扩展频谱收发模块利用多模式传输

    公开(公告)号：WO1996038925A1

    公开(公告)日：1996-12-05

    申请号：PCT/US1996009474

    申请日：1996-06-03

    Applicant: NORAND CORPORATION ,  MAHANY, Ronald, L.

    Inventor： NORAND CORPORATION

    IPC: H04B01/44

    CPC classification number: H04L1/0001 ,  H04B1/406 ,  H04B1/69 ,  H04L1/0025 ,  H04L1/0032

    Abstract: A data transceiver module (501) for digital data communications in a portable hand-held data terminal has multiple data spread spectrum modes which include direct sequence and frequency function modulation algorithms. The transceiver module (501) has multiple user or program configurable data rates, modulation, channelization and process gain in order to maximize the performance of radio data transmissions and to maximize interference immunity. Wireless access devices in a cell based network each consider a variety of factors when choosing one of a plurality of modes of wireless operation and associated operating parameters. Such selection defines a communication channel to support wireless data, message and communication exchanges. In further embodiments, the wireless access devices also support a second channel, a busy/control signal, for managing communication on the main communication channel and to overcome roaming and hidden terminal problems.

    Abstract translation: 用于便携式手持数据终端中的数字数据通信的数据收发模块（501）具有包括直接序列和频率函数调制算法在内的多种数据扩频模式。 收发器模块（501）具有多个用户或程序可配置的数据速率，调制，信道化和过程增益，以便使无线电数据传输的性能最大化并且最大化抗干扰性。 基于小区的网络中的无线接入设备在选择多种无线操作模式和相关操作参数中的一种时考虑各种因素。 这种选择定义了支持无线数据，消息和通信交换的通信信道。 在另外的实施例中，无线接入设备还支持用于管理主通信信道上的通信并克服漫游和隐藏终端问题的第二信道，忙/控制信号。

    INFRARED BACKBONE COMMUNICATION NETWORK HAVING A RADIO FREQUENCY BACKUP CHANNEL
    4.
    发明申请
    INFRARED BACKBONE COMMUNICATION NETWORK HAVING A RADIO FREQUENCY BACKUP CHANNEL 审中-公开
    具有无线电频率备份通道的红外线通信网络

    公开(公告)号：WO1996031021A1

    公开(公告)日：1996-10-03

    申请号：PCT/US1996004396

    申请日：1996-03-29

    Applicant: NORAND CORPORATION ,  MAHANY, Ronald, L.

    Inventor： NORAND CORPORATION

    IPC: H04B10/00

    CPC classification number: H04W24/04 ,  H04B1/38 ,  H04B1/74 ,  H04B10/1149 ,  H04B10/40 ,  H04L12/403 ,  H04W84/10 ,  H04W88/10 ,  Y02D70/40 ,  Y02D70/46

    Abstract: A communication network which uses an infrared backbone and having a radio frequency backup channel is disclosed. The infrared backbone is generally located on a ceiling in a hallway of a building (fig. 3) and comprises a plurality of hub access points (307). The hub access points (307) communicate data on the backbone in a relay fashion using modulated infrared light. If infrared communications fail, the hub access points (307) may, as a backup, communicate in the same fashion using low power radio frequency (RF) transmissions. In another embodiment, in an environment such as an airplane (figs. 11-12) having equipment sensitive to RF noise, a communication network is installed having communication pathways which adapt in response to such equipment as need be to minimize RF noise. For example, high-bandwith wired communication might be acceptable during some periods when the sensitive equipment is not in use. During other periods, the equipment may cause the communication pathways of the network to only utilize infrared transmissions or to enter an idle state. The access points use a sequential polling protocol and relay data throughout the network. Blocking and absorptive triangular shaped panels are used to absorb, deflect and contain infrared transmissions into cells.

    Abstract translation: 公开了一种使用红外骨干网并具有射频备份信道的通信网络。 红外线骨架通常位于建筑物走廊的天花板上（图3），并且包括多个集线器接入点（307）。 集线器接入点（307）使用调制的红外光以中继方式在骨干网上传送数据。 如果红外通信失败，则集线器接入点（307）可以作为备份，以相同的方式使用低功率射频（RF）传输进行通信。 在另一个实施例中，在具有对RF噪声敏感的设备的诸如飞机的环境（图11-12）中，安装通信网络，其具有响应于需要使得RF噪声最小化的这种设备而适应的通信路径。 例如，在敏感设备不使用的某些时期，高带宽有线通信可能是可以接受的。 在其他时段期间，设备可能导致网络的通信路径仅使用红外传输或进入空闲状态。 接入点在整个网络中使用顺序轮询协议和中继数据。 阻塞和吸收三角形面板用于吸收，偏转和容纳红外线传输到电池中。

    WIRELESS PERSONAL LOCAL AREA NETWORK
    5.
    发明申请
    WIRELESS PERSONAL LOCAL AREA NETWORK 审中-公开
    无线个人本地区网络

    公开(公告)号：WO1994015413A1

    公开(公告)日：1994-07-07

    申请号：PCT/US1993012628

    申请日：1993-12-23

    Applicant: NORAND CORPORATION ,  MAHANY, Ronald, L. ,  BUNTE, Alan, G. ,  LUSE, Ronald, E. ,  WEST, Guy, J. ,  GOLLNICK, Charles, D.

    Inventor： NORAND CORPORATION

    IPC: H04B07/204

    CPC classification number: H04W52/343 ,  G08C17/02 ,  G08C2201/20 ,  H04B17/0085 ,  H04B17/318 ,  H04L1/0002 ,  H04L1/0017 ,  H04L1/0025 ,  H04L1/0032 ,  H04L12/403 ,  H04L69/18 ,  H04W28/10 ,  H04W28/22 ,  H04W52/029 ,  H04W52/346 ,  H04W84/12 ,  Y02D70/142 ,  Y02D70/164

    Abstract: A transceiver apparatus (110) for creating a wireless personal local area network between a computer terminal (7) and one or more peripheral devices (9, 13, 23). A separate transceiver (110) is connected to the computer terminal (7) and to each peripheral device (9, 13, 23). The transceivers (110) can be connected to the terminal (7) or the peripheral devices (9, 13, 23) either internally or externally. A low power radio (112) is used to communicate information between the computer terminal (7) and the peripheral devices (9, 13, 23). Different transceivers (110) can be used for modifying the carrier frequency and power of the local area network. A microprocessor (120) is located inside each transceiver (110) and controls the information flow of the transceiver including the communication protocol which allows each device (7, 9, 13, 23) to know if other devices (7, 9, 13, 23) are communicating, which devices (7, 9, 13, 23) are being communicated to, and selectively address the peripheral devices (9, 13, 23). An Idle Sense communication protocol is used for information transfer between the computer terminal (7) and the peripheral devices (9, 13, 23).

    Abstract translation: 一种用于在计算机终端（7）和一个或多个外围设备（9,13,23）之间创建无线个人局域网的收发器设备（110）。 单独的收发器（110）连接到计算机终端（7）和每个外围设备（9,13,23）。 收发器（110）可以在内部或外部连接到终端（7）或外围设备（9,13,23）。 低功率无线电（112）用于在计算机终端（7）和外围设备（9,13,23）之间传送信息。 可以使用不同的收发器（110）来修改局域网的载波频率和功率。 微处理器（120）位于每个收发器（110）内部并且控制收发器的信息流包括通信协议，其允许每个设备（7,9,13,23）知道其他设备（7,9,13， 23）正在通信，哪个设备（7,9,13,23）被传送到，并且选择性地寻址外围设备（9,13,23）。 空闲感知通信协议用于计算机终端（7）和外围设备（9,13,23）之间的信息传输。

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