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21 条记录 (耗时 0.018 秒)

    Radio frequency error detection and correction system
    3.
    发明授权
    Radio frequency error detection and correction system 失效
    无线电频率误差检测和校正系统

    公开(公告)号：US5249305A

    公开(公告)日：1993-09-28

    申请号：US705875

    申请日：1991-05-28

    申请人： Alfred B. Wieczorek ,  Charles N. Lynk, Jr. ,  Walter J. Rozanski, Jr. ,  Kenneth J. Zdunek ,  Terry K. Mansfield

    发明人： Alfred B. Wieczorek ,  Charles N. Lynk, Jr. ,  Walter J. Rozanski, Jr. ,  Kenneth J. Zdunek ,  Terry K. Mansfield

    IPC分类号： H04B17/00 ,  H04B1/40 ,  H04B7/005

    CPC分类号： H04B1/405 ,  H04B7/005

    摘要： A radio communication system including a control station and at least one remote station (20) is provided. The control station has a receiver for receiving radio signals, a transmitter for transmitting radio signals and a demodulator for measuring the frequency of the received signals. Responsive to a request for frequency measurement received from the receiver, the control station also has an error signal encoder to provide an error feedback signal containing the polarity and magnitude of the frequency difference for transmission by the transmitter. At least one remote station (20) has a receiver (25), a transmitter (26), a frequency controller (46), an encoder for encoding the request for frequency measurement and for actuating the transmitter (26) to transmit the request, and a decoder (34), responsive to the received error feedback signal for adjusting the frequency control.

    摘要翻译： 提供了包括控制站和至少一个远程站（20）的无线电通信系统。 控制站具有用于接收无线电信号的接收机，用于发送无线电信号的发射机和用于测量接收信号的频率的解调器。 响应于从接收机接收的对频率测量的请求，控制站还具有误差信号编码器，以提供包含用于发射机发射的频差的极性和幅度的误差反馈信号。 至少一个远程站（20）具有接收机（25），发射机（26），频率控制器（46），用于编码频率测量请求并用于致动发射机（26）传送请求的编码器， 以及解码器（34），响应于所接收的误差反馈信号来调整频率控制。

    Dispatch trunked radio system
    4.
    发明授权
    Dispatch trunked radio system 失效
    调度集群无线电系统

    公开(公告)号：US4692945A

    公开(公告)日：1987-09-08

    申请号：US933367

    申请日：1986-11-19

    申请人： Kenneth J. Zdunek

    发明人： Kenneth J. Zdunek

    IPC分类号： H04B7/15 ,  H04B7/26 ,  H04L1/00 ,  H04W4/10 ,  H04W84/08 ,  H04B7/14

    CPC分类号： H04W84/08 ,  H04L1/0071 ,  H04L1/0072 ,  H04W4/10 ,  H04W76/005

    摘要： The present invention contemplates an improved dispatch trunked radio system which provides for individual subscriber to subscriber communication as well other enhanced trunking features. An expanded "dual-word" signalling protocol provides an improvement over prior "single word" signalling protocols by increasing the versatility of commands which may be communicated between the components of the trunked radio system. The "dual-word" signalling protocol of the present invention remains compatible with prior "single-word" subscriber units.

    摘要翻译： 本发明考虑了一种改进的调度集群无线电系统，其向个体用户提供订户通信以及其他增强的中继特征。 扩展的“双字”信令协议通过增加可以在集群无线电系统的组件之间通信的命令的通用性来提供对先前的“单字”信令协议的改进。 本发明的“双字”信令协议与先前的“单字”用户单元保持兼容。

    MULTI MODEL ADDRESS BOOK
    6.
    发明申请
    MULTI MODEL ADDRESS BOOK 审中-公开
    多模式地址簿

    公开(公告)号：US20070281676A1

    公开(公告)日：2007-12-06

    申请号：US11421565

    申请日：2006-06-01

    申请人： Jaime A. Borras ,  Iwona Turlik ,  Kenneth J. Zdunek ,  Stephen L. Spear

    发明人： Jaime A. Borras ,  Iwona Turlik ,  Kenneth J. Zdunek ,  Stephen L. Spear

    IPC分类号： H04M3/00

    CPC分类号： H04M1/56 ,  H04M1/2745 ,  H04M1/274508 ,  H04M1/72563 ,  H04W76/10

    摘要： A wireless communication device (102) includes a multi-mode transceiver (204) that is operable to communicate with a plurality of communication networks. The device (102) also includes a memory (216) for storing: an electronic address book (226) that includes a plurality of identifiers (302), each identifier (302) identifying a call destination device; a plurality of access network choices (304) for at least one of the identifiers (302); and a plurality of service choices (308) for at least one of the identifiers. The device (102) further includes a controller (210) having access to the memory (216) for determining a preferred call model and selecting one of the plurality of access network choices and one of the plurality of service choices as a preferred call model for at least one of the identifiers.

    摘要翻译： 无线通信设备（102）包括可操作以与多个通信网络进行通信的多模式收发器（204）。 设备（102）还包括存储器（216），用于存储：包括多个标识符（302）的电子地址簿（226），标识呼叫目的地设备的每个标识符（302） 用于所述标识符（302）中的至少一个的多个接入网络选择（304）; 以及用于至少一个标识符的多个服务选择（308）。 设备（102）还包括控制器（210），其具有访问存储器（216），用于确定优选呼叫模型，并且选择多个接入网络选择中的一个，并且将多个服务选择中的一个作为优选呼叫模型， 至少一个标识符。

    Method and apparatus for controlling access to a communication system
    7.
    发明授权
    Method and apparatus for controlling access to a communication system 失效
    用于控制对通信系统的访问的方法和装置

    公开(公告)号：US4992783A

    公开(公告)日：1991-02-12

    申请号：US176951

    申请日：1988-04-04

    申请人： Kenneth J. Zdunek ,  Philip A. Bieri ,  Eric R. Schorman

    发明人： Kenneth J. Zdunek ,  Philip A. Bieri ,  Eric R. Schorman

    IPC分类号： H04L9/32 ,  H04W12/00

    CPC分类号： H04W12/06 ,  H04L63/083

    摘要： All subscribers operating within a communication system initially generate and transmit a random password and their ID code to the operation (control) center of a communication system. Thereafter, in a first embodiment, subscribers are commanded to modify (in a predetermined manner) and re-transmit their password and ID code either periodically or upon requesting access to the communication system. The modified password is retained as the current (authorized) password by both the subscriber and the system. In a second embodiment, subscribers are commanded to generate and transmit a new random password and their ID code to the system, which maintains a history of each subscriber's current and previous passwords. According to the invention, some of the subscribers having an unauthorized (duplicated) ID code may be inactive (off) when the subscriber is commanded to modify or generate a password. In this way, one of the subscribers having an unauthorized (duplicated) ID code will become out-of-sync with the system, and eventually transmit an unauthorized password. When the system receives an incorrect password for an out-of-sync subscriber, access to the communication system may be denied, and the subscribers that duplicate (or permit others to duplicate) ID codes may be identified.

    Method for dynamically allocating data channels on a trunked communication system
    8.
    发明授权
    Method for dynamically allocating data channels on a trunked communication system 失效
    在集群通信系统上动态分配数据信道的方法

    公开(公告)号：US4870408A

    公开(公告)日：1989-09-26

    申请号：US44525

    申请日：1987-04-30

    申请人： Kenneth J. Zdunek ,  Garry C. Hess ,  Richard A. Comroe

    发明人： Kenneth J. Zdunek ,  Garry C. Hess ,  Richard A. Comroe

    IPC分类号： H04J1/00 ,  H04B7/15 ,  H04B7/26 ,  H04M11/06 ,  H04W84/08

    CPC分类号： H04W84/08 ,  H04W24/10 ,  H04W28/08 ,  H04W72/042

    摘要： Disclosed is a method to dynamically allocate a number of data channels on a trunked radio system (100). The data activity is monitored during a predetermined time interval. If activity is above a predetermined maximum, an additional channel may be reserved for data use. Conversely, if data traffic is low, a data channel may be reallocated for voice message use. Moreover, should the amount of data traffic among the available data channels be unbalanced, the present method contemplates reassigning subscriber units (114 or 116) to the available data channels to balance the data traffic load, thereby providing superior access time and system performance.

    摘要翻译： 公开了一种在集群无线电系统（100）上动态地分配多个数据信道的方法。 在预定的时间间隔期间监视数据活动。 如果活动高于预定最大值，则可以保留附加信道用于数据使用。 相反，如果数据业务量低，则可以重新分配数据信道用于语音消息的使用。 此外，如果可用数据信道中的数据业务量不平衡，则本方法考虑将用户单元（114或116）重新分配给可用数据信道以平衡数据业务负载，从而提供优越的接入时间和系统性能。

    Automatic unit ID for quasi-transmission trunked systems
    10.
    发明授权
    Automatic unit ID for quasi-transmission trunked systems 失效
    准传输中继系统的自动单元ID

    公开(公告)号：US4646345A

    公开(公告)日：1987-02-24

    申请号：US872360

    申请日：1986-06-09

    申请人： Kenneth J. Zdunek ,  Bruce D. Heyman ,  Michael D. Sasuta

    发明人： Kenneth J. Zdunek ,  Bruce D. Heyman ,  Michael D. Sasuta

    IPC分类号： H04W84/08 ,  H04Q7/04

    CPC分类号： H04W84/08

    摘要： The system requires the use of the permanent ID of the requesting unit in every channel request made on a control channel before every transmission. The channel grant will include the ID along with the channel number and these may be recorded for possible later reference. A channel assignment is retained for a brief period after each transmission, allowing a conversation to be continued on the same channel without a break. Units can access the control channel with a channel request and be assigned a channel even while the dispatcher is using the voice channel. In the case of a need for communication with a larger group, a dispatcher can form a temporary "patch" group of all involved units, with a temporary ID assigned to that group. A channel request from a member of the larger group must then include, not only the permanent ID of the requesting unit, but the temporary ID of the "patch" group.

    摘要翻译： 在每个传输之前，系统需要在控制信道上进行的每个信道请求中使用请求单元的永久ID。 频道授权将包括ID以及频道号，并且可以记录这些ID以供将来参考。 频道分配在每次传输后的短时间内保留，允许在同一频道上继续进行会话，而不会中断。 单元可以使用通道请求访问控制通道，即使在调度程序使用语音通道时也可以分配通道。 在需要与较大组通信的情况下，调度员可以形成所有相关单元的临时“补丁”组，并将临时ID分配给该组。 来自较大组的成员的信道请求必须不仅包括请求单元的永久ID，而且还包括“补丁”组的临时ID。