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61. 发明授权

US5088108A Cellular digital mobile radio system and method of transmitting information in a digital cellular mobile radio system 失效
标题翻译：细胞数字移动无线电系统及其在数字蜂窝移动无线电系统中传输信息的方法
公开(公告)号：US5088108A
公开(公告)日：1992-02-11
申请号：US579283
申请日：1990-09-06
申请人： Jan E. Uddenfeldt , Alex K. Raith
发明人： Jan E. Uddenfeldt , Alex K. Raith
IPC分类号： H04B7/26 , H04H20/67 , H04W88/08
CPC分类号： H04H20/67 , H04B7/2625 , H04W88/08
摘要： The invention relates to a cellular digital mobile radio system including base stations (B.sub.m, B.sub.n) and mobile stations (MS.sub.1, MS.sub.2) with transmitters and receivers. The invention also relates to a method of transmitting message information digitally between mobile and base stations in such a system. In accordance with the invention, at least two base station transmitters (B.sub.ma, B.sub.mb, B.sub.na, B.sub.nb) at a given transmitting distance from each other are assigned to each of certain cells (C.sub.m, C.sub.n) within a restricted geographical area. The base station transmitters which are assigned to the same cell transmit digitally modulated radio signals within the same frequency range at least partially simultaneously to the mobile stations of the cell. The radio signals from different base station transmitters associated with the same cell are digitally modulated with the same message information to the mobile stations in the cell. Different base station transmitters (9A, 9B) preferably transmit the digitally modulated radio signals with the same message information to a given mobile station with a given mutual transmission time shift. Here, the transmission time shift is selected individually for each mobile station, such that corresponding digitally modulated radio signals with the same message information to a given mobile station from different base station transmitters arrive practically simultaneously at the mobile station.

62. 发明授权

US5014344A Method for synchronizing the transmissions in a simulcast transmission system 失效
标题翻译：在同播传输系统中同步传输的方法
公开(公告)号：US5014344A
公开(公告)日：1991-05-07
申请号：US495819
申请日：1990-03-19
申请人： Steven J. Goldberg
发明人： Steven J. Goldberg
IPC分类号： H04B7/26 , H04H20/67 , H04J3/06 , H04Q7/36
CPC分类号： H04H20/67 , H04J3/0682
摘要： A method for synchronizing message transmissions in a simulcast transmitter system is described. A master controller couples to a plurality of regional controllers for enabling message transmissions and for initiating delay measurement signal transmissions in each of a plurality of regions. The master controller generates a first delay measurement signal which is transmitted from a selected one of a plurality of regional transmitters operating within a first transmission region. The regional controller within the first transmission region measures the propagation delay of the selected one of the plurality of regional transmitters within the first transmission region. The master controller next generates a second delay measurement signal which is transmitted from a selected one of the plurality of regional transmitters operating within a second transmission region adjacent to the first transmission region. The regional controller within the first transmission region measures the propagation delay of the selected one of the plurality of regional transmitters within the second transmission region. The intra-regional differential propagation delay is computed from the measurements of the propagation delays measured from the first and second transmission regions. The additional transmission delay is computed for each of the regional transmitters within the first and second transmission regions, and the transmission delays for each regional transmitter are adjusted to equalize the intra-regional differential transmission delays between the first and second transmission regions.
摘要翻译：描述了一种在同播广播发射机系统中同步消息传输的方法。主控制器耦合到多个区域控制器以实现消息传输并且用于在多个区域中的每个区域中启动延迟测量信号传输。主控制器产生从在第一传输区域内操作的多个区域发射机中所选的一个发射的第一延迟测量信号。第一传输区域内的区域控制器测量第一传输区域内的多个区域发射机中所选择的一个的传播延迟。主控制器接下来产生从在与第一传输区域相邻的第二传输区域内操作的多个区域发射机中选择的一个发射的第二延迟测量信号。第一传输区域内的区域控制器测量第二传输区域内的多个区域发射机中选定的一个的传播延迟。根据从第一和第二传输区域测量的传播延迟的测量来计算区域内差分传播延迟。为第一和第二传输区域内的每个区域发射机计算附加传输延迟，并且调整每个区域发射机的传输延迟以均衡第一和第二传输区域之间的区域内差分传输延迟。

63. 发明授权

US4747160A Low power multi-function cellular television system 失效
标题翻译：低功率多功能手机电视系统
公开(公告)号：US4747160A
公开(公告)日：1988-05-24
申请号：US25720
申请日：1987-03-13
申请人： Bernard Bossard
发明人： Bernard Bossard
IPC分类号： H04N5/38 , H04B7/15 , H04H20/00 , H04H20/02 , H04H20/57 , H04H20/67 , H04N5/00 , H04N5/44 , H04N7/00 , H04N7/08 , H04N7/10 , H04N7/14 , H04N7/16 , H04N7/20 , H04B1/10
CPC分类号： H04H20/67 , H04N7/08 , H04N7/10 , H04N7/141 , H04N7/148 , H04N7/16 , H04N7/20 , H04N2007/145
摘要： A multi-function cellular television system includes transmitting antennas located in an array such that the transmitted signals of adjacent antennas are of substantially differing polarity. The system provides for a variety of two-way communication services including television, both public and private programming, digital two-way transmission, special video teleconferencing, radio programming and telephone services. A low power output coupled with a wide bandwidth in the 27.5 to 29.5 GHZ millimeter wave band region is employed along with very high Q filtering intermodulation and interference reduction circuitry. The system has the ability to transmit, retransmit and receive numerous simultaneous signals with little or no modulation distortion or interaction. Further reduction of distortion is achieved through the use of modulation diversity, frequency diversity and space diversity.
摘要翻译：低功率多功能蜂窝式电视系统包括多个低功率小区节点发射机站和多个接收机，轨道站包括多个基本上全向的发射天线62，并且接收站具有多个定向接收天线12并被引导以仅接收来自所述全向发射天线62的电视信号。该系统优选地包括一连串的发射机/接收机对，链中的备用对被布置成以第一给定的方式发射和接收信号极性，其余的对被布置成以第二极性发送和接收信号。

64. 发明授权

US4696052A Simulcast transmitter apparatus having automatic synchronization capability 失效
标题翻译：具有自动同步功能的联播发射机设备
公开(公告)号：US4696052A
公开(公告)日：1987-09-22
申请号：US815432
申请日：1985-12-31
申请人： Robert L. Breeden
发明人： Robert L. Breeden
IPC分类号： H04H20/67 , H04B1/00 , H04B7/00
CPC分类号： H04H20/67
摘要： A simulcast transmitter apparatus having automatic synchronization capability is disclosed which utilizes a signal readily available from any one of a number of available master timing sources to maintain a constant, uniform time delay to the transmitter via its interconnect link, even though the time delay corresponding to this interconnect link is susceptible to variation. Each interconnect link may consist of a phone line or other radio link which exhibits a relatively fixed, but unstable, delay. Each base station includes at least a transmitter and an adaptive-delay device which operates as a remotely-adjustable delay network upon receipt of a resync signal from a central controller to readjust and automatically maintain a uniform amount of time delay to each transmitter in the base stations. A master timing signal receiver, such as a suitable radio navigation receiver, is coupled to a suitable fixed delay network and provides the reference sync signal for each remotely-sited base station throughout the designated geographical area. This transmitter is therefore able to be compensated for varying amounts of delay caused by utilizing alternate links which may be necessary to maintain system reliability while overcoming inclement weather, interference, or other equipment difficulties.
摘要翻译：公开了一种具有自动同步能力的联播发射机装置，其利用从多个可用主定时源中的任何一个容易获得的信号经由其互连链路向发射机维持恒定均匀的时间延迟，即使对应于这种互连链路容易变化。每个互连链路可以由电话线路或其他无线电链路组成，其呈现相对固定但不稳定的延迟。每个基站至少包括发射机和自适应延迟设备，其在接收到来自中央控制器的重新同步信号时作为可远程调节的延迟网络操作，以对基站中的每个发射机重新调整并自动维持均匀的时间延迟量车站。诸如合适的无线电导航接收机的主定时信号接收机被耦合到合适的固定延迟网络，并且在整个指定的地理区域中为每个远程位置基站提供参考同步信号。因此，该发射机能够通过利用替代链路来补偿由于维持系统可靠性而可能需要的替代链路，同时克服恶劣天气，干扰或其他设备困难。

65. 发明授权

US4188582A Simulcast transmission system having phase-locked remote transmitters 失效
标题翻译：具有锁相远程发射机的联播传输系统
公开(公告)号：US4188582A
公开(公告)日：1980-02-12
申请号：US894671
申请日：1978-04-10
申请人： Gary A. Cannalte , Ronald H. Chapman , Walter J. Rozanski, Jr.
发明人： Gary A. Cannalte , Ronald H. Chapman , Walter J. Rozanski, Jr.
IPC分类号： H04B1/04 , H04H20/67 , H04J3/06 , H04L7/033 , H04B7/00
CPC分类号： H04H20/67 , H04J3/0638 , H04L7/033
摘要： A simulcast transmission system is provided where a reference signal transmitted from a central station is utilized to phase-lock transmitters located at remote stations. The remote stations include a receiver for receiving the transmitted reference signal and a signal conditioner for conditioning the received reference signal for application to the transmitters. The transmitters include a phase-locked loop which may be followed by a multiplier for providing transmitter signals of predetermined frequencies. All the transmitters at the remote stations are phase locked to the reference signal transmitted from the central station. In the event that the reference signal transmitted by the central station is interrupted, the signal conditioner of the remote stations will operate in an open-loop fashion to provide the conditioned reference signal during the interruption. After the interruption has cleared, the signal conditioner is automatically phase synchronized to the reference signal and closed-loop operation is resumed.
摘要翻译：提供了一种联播传输系统，其中使用从中心站发送的参考信号来相位锁定位于远程站的发射机。远程站包括用于接收传送的参考信号的接收机和用于调节接收到的参考信号以供应用于发射机的信号调节器。发射机包括锁相环，其后面可以有一个用于提供预定频率的发射机信号的乘法器。远程站的所有发射机都被锁定到从中心站发送的参考信号。在中央站发送的参考信号中断的情况下，远程站的信号调理器将以开环方式工作，以在中断期间提供经调节的参考信号。中断清除后，信号调节器自动与参考信号相位同步，并恢复闭环运行。

66. 发明授权

US3443024A Synchronising of periodic signals 失效
标题翻译：定期信号同步
公开(公告)号：US3443024A
公开(公告)日：1969-05-06
申请号：US3443024D
申请日：1966-02-28
申请人： MARCONI CO LTD , STANDARD TELEPHONES CABLES LTD
发明人： ALLEN CYRIL JOSEPH , BLISS JOHN LLEWELYN , MILLAR IAN DAVID BALFOUR
IPC分类号： H04H20/67 , H04N5/073 , H04N7/08 , H04N9/44 , H04N9/475 , H04N1/46 , H04N9/00
CPC分类号： H04H20/67 , H04N5/073 , H04N7/08 , H04N9/44 , H04N9/475

67. 发明授权

US3230453A System for maintaining fixed phase between a pair of remotely located stations 失效
标题翻译：用于在一对远程站之间维持固定相位的系统
公开(公告)号：US3230453A
公开(公告)日：1966-01-18
申请号：US20193862
申请日：1962-06-12
申请人： RADIATION INC
发明人： BOOR SAMUEL B , WOHLERS ROBERT J
IPC分类号： H04H20/67
CPC分类号： H04H20/67

68. 发明授权

US2545197A Relay satellite broadcast system 失效
标题翻译：中继卫星广播系统
公开(公告)号：US2545197A
公开(公告)日：1951-03-13
申请号：US73760847
申请日：1947-03-27
申请人： RCA CORP
发明人： WOODROW DARLING
IPC分类号： H04H20/67
CPC分类号： H04H20/67

69. 发明授权

US2218636A Radio transmitter synchronization 失效
标题翻译：射频发射机同步
公开(公告)号：US2218636A
公开(公告)日：1940-10-22
申请号：US22187038
申请日：1938-07-29
申请人： TELEFUNKEN GMBH
发明人： RICHARD BRUCKNER
IPC分类号： H04H20/67 , H04N5/04
CPC分类号： H04H20/67 , H04N5/04

70. 发明授权

US2127015A Electromagnetic wave signaling system 失效
标题翻译：电磁波信令系统
公开(公告)号：US2127015A
公开(公告)日：1938-08-16
申请号：US72046134
申请日：1934-04-13
申请人： AMERICAN OPTICAL CORP
发明人： TILLYER EDGAR D
IPC分类号： H04H20/67
CPC分类号： H04H20/67

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