Broadcast type satellite communication systems
    21.
    发明授权
    Broadcast type satellite communication systems 失效
    广播式卫星通信系统

    公开(公告)号:US4381562A

    公开(公告)日:1983-04-26

    申请号:US145618

    申请日:1980-05-01

    申请人: Anthony Acampora

    发明人: Anthony Acampora

    IPC分类号: H04B7/185 H04J3/06

    CPC分类号: H04B7/18523

    摘要: The present invention relates to a point-to-multipoint or broadcast TDMA or FDMA satellite arrangement wherein each up-link message unit is intended for reception at one or more geographically dispersed remote receiving sites within a wide service area. In one arrangement of a TDMA or FDMA satellite, the up-link message units are received and each message unit is directed to a transponder and to one or more down-link antenna ports for concurrent transmission to each of the destinations receiving sites for such message. An alternative TDMA satellite arrangement provides for each up-link message unit to be temporarily stored during the receiving frame period and then transmitted in accordance with a predetermined frame format during the appropriate time segments of the subsequent frame period to all of the destinational receiving sites. A technique for providing such predetermined frame format is also disclosed.

    摘要翻译: 本发明涉及一种点对多点或广播TDMA或FDMA卫星装置,其中每个上行链路消息单元用于在广泛服务区域内的一个或多个地理上分散的远程接收站点处进行接收。 在TDMA或FDMA卫星的一种布置中,接收上行链路消息单元,并且每个消息单元被定向到应答器和一个或多个下行链路天线端口,用于并发传输到用于这种消息的每个目的地接收站点 。 替代的TDMA卫星装置提供每个上行链路消息单元在接收帧周期期间临时存储,然后在随后帧周期的适当时间段内按照预定帧格式发送到所有目的地接收站点。 还公开了一种用于提供这种预定帧格式的技术。

    Processor for a TDMA burst modem
    22.
    发明授权
    Processor for a TDMA burst modem 失效
    TDMA突发调制解调器的处理器

    公开(公告)号:US4232197A

    公开(公告)日:1980-11-04

    申请号:US936714

    申请日:1978-08-25

    CPC分类号: H04B7/2046

    摘要: The present invention provides a processor for interfacing a TDMA burst modem (40), which transmits and receives bursts of information at high data rates in assigned time slots, and slow speed terminal processing equipment. The present processor comprises circuitry (50) capable of detecting frame or superframe markers in a received sequence and regenerating such markers, after initiation, at the normal interval for such markers despite false alarms or missed marker signals. Other circuitry (53, 57 and 52, 62) causes a memory (48, 56) to directly output a burst of information during an assigned time slot to the modem (40) and directly store received information from modem (40) during a predetermined interval which is designed to start before and end after the expected arrival of an assigned burst. Slower processing equipment is then used to find and process the burst in the stored information.

    摘要翻译: 本发明提供了一种处理器,用于在分配的时隙中以高数据速率发送和接收信息突发的TDMA突发调制解调器(40)和慢速终端处理设备的接口。 本处理器包括能够检测接收到的序列中的帧或超帧标记的电路(50),并且在起始之后以这种标记的正常间隔再生这些标记,尽管存在假警报或错过标记信号。 其他电路(53,57和52,62)使得存储器(48,56)在分配的时隙期间直接输出信息突发给调制解调器(40),并且在预定的时间内直接存储来自调制解调器(40)的接收信息 间隔被设计为在分配的突发的预期到达之后开始和结束。 然后使用较慢的处理设备来查找和处理存储信息中的突发。

    Method and apparatus to permit substantial cancellation of interference
between a received first and second signal
    23.
    发明授权
    Method and apparatus to permit substantial cancellation of interference between a received first and second signal 失效
    允许基本上消除接收的第一和第二信号之间的干扰的方法和装置

    公开(公告)号:US4178550A

    公开(公告)日:1979-12-11

    申请号:US803152

    申请日:1977-06-03

    摘要: The present invention relates to method and apparatus for substantially reducing the effects of interference at a receiver between concurrently received first and second digital signals which use the same frequency spectrum. Interference between signals is effectively reduced by transmitting the first digital signal in an uncoded form while concurrently transmitting the second digital signal with both reduced capacity when compared with the first signal and in coded form using a forward error correcting code such as, for example, a block or convolutional code. At the receiver intercepting both digital signals, a suitable detection process is performed to decode the second signal and separate both signals. The present invention is applicable to the simultaneous satellite transmission of an area coverage beam and a plurality of spot coverage beams or to increase capacity on a radio channel.

    摘要翻译: 本发明涉及用于在同时接收的使用相同频谱的第一和第二数字信号之间大大减少接收机干扰的影响的方法和装置。 通过以未编码形式发送第一数字信号同时发送具有减小的容量的第二数字信号与第一信号相比并以编码形式使用前向纠错码(例如, 块或卷积码。 在接收器拦截两个数字信号时,执行合适的检测处理以对第二信号进行解码并分离两个信号。 本发明适用于区域覆盖波束和多个点覆盖波束的同时卫星传输,或者增加无线电信道上的容量。

    Method and apparatus for effecting communication with receivers disposed
in blackout regions formed by concurrently transmitted overlapping
global and spot beams
    24.
    发明授权
    Method and apparatus for effecting communication with receivers disposed in blackout regions formed by concurrently transmitted overlapping global and spot beams 失效
    用于与设置在同时传输的重叠全局和点光束形成的遮光区域中的接收器进行通信的方法和装置

    公开(公告)号:US4163942A

    公开(公告)日:1979-08-07

    申请号:US842416

    申请日:1977-10-17

    IPC分类号: H04B7/204 H04B15/00 H04B1/00

    CPC分类号: H04B7/2041

    摘要: The present invention relates to method and apparatus for communicating with one or more receiver stations disposed within a blackout region located in the vicinity of and surrounding each spot beam coverage area, the blackout region being caused by interference between concurrently transmitted and overlapping global coverage and spot coverage antenna radiated beams using the same frequency band despite the application of global beam interference suppression techniques at the spot beam receiving areas. Access to the receiver stations within each blackout region is provided by selectively turning off the associated interfering spot beam during a predetermined interval of time while ensuring that the power level of the radiated global coverage beam is not suppressed within the accessed blackout region to permit the global coverage beam to communicate with these receiver stations.

    摘要翻译: 本发明涉及一种用于与设置在位于每个点波束覆盖区域附近并围绕每个点波束覆盖区域的停电区域内的一个或多个接收站通信的方法和装置,所述停电区域由同时发送和重叠的全局覆盖之间的干扰和点 使用相同频带的覆盖天线辐射波束,尽管在点波束接收区域应用全局波束干扰抑制技术。 通过在预定的时间间隔期间选择性地关闭相关联的干扰点波束来提供对每个停电区域内的接收站的访问,同时确保辐射的全局覆盖波束的功率电平在所访问的遮断区域内不被抑制,以允许全局 覆盖波束与这些接收站通信。

    Adaptive local wireless communication system
    25.
    发明授权
    Adaptive local wireless communication system 有权
    自适应局部无线通信系统

    公开(公告)号:US07197326B2

    公开(公告)日:2007-03-27

    申请号:US10722214

    申请日:2003-11-24

    申请人: Anthony Acampora

    发明人: Anthony Acampora

    IPC分类号: H04Q7/20

    摘要: A radio link management system for a home or office substantially (i) an ad hoc network of agents wirelessly communicating among themselves, while (iii) clients wirelessly communicate with proximate agents. Control of the network may be centralized as network controller integrated with an agent, or may be distributed upon the network of agents. Some agent or agents, which may include an agent that is also the network controller, typically serves as a gateway device which connects to a worldwide communications network external to the home or office, normally by fiber or by wire.Each agent is most commonly a small radio transceiver plus logic and power supply that mounts upon a wall and plugs directly into an AC power socket. Agents wirelessly communicate among themselves and with the controller—which may be centralized or distributed—in a bandwidth-efficient mode since prime power is not an issue. Each client, which is most commonly a battery-powered user device, wirelessly radio communicates with one or more proximately-located agents. Consistent with overall demand for the radio resource, parameters for radio communication are allocated ad hoc in a manner which is (a) client-dependent, and which (b) uses the least power from the battery-powered client. The agents establish an ad-hoc network among themselves, with routing among and between the agents being both multi-hop and “minimum hop” to conserve bandwidth. Accordingly both power and bandwidth are conserved, each as and where required and desired.

    摘要翻译: 用于家庭或办公室的无线电链路管理系统基本上(i)在它们之间无线地通信的代理的自组织网络,同时(iii)客户端与最近的代理无线通信。 网络的控制可以集中在与代理集成的网络控制器中,或者可以分布在代理网络上。 一些代理或代理,其可以包括也是网络控制器的代理,通常用作连接到家庭或办公室外部的全球通信网络的网关设备,通常是通过光纤或线缆连接。

    Single clock reference for compressed domain processing systems
    26.
    发明授权
    Single clock reference for compressed domain processing systems 失效
    用于压缩域处理​​系统的单时钟参考

    公开(公告)号:US06356212B1

    公开(公告)日:2002-03-12

    申请号:US09506612

    申请日:2000-02-18

    IPC分类号: H03M700

    摘要: A device and method for utilizing a single clock signal to generate a digital data stream signal for transmission in a compressed domain transmission system. The device includes a plurality of packetized elementary stream encoders electronically coupled to a transport stream encoder electronically coupled to an output interface adapted to generate the digital data stream signal. The method includes: operating each of the packetized elementary stream encoders responsively to the single clock sequence to generate a plurality of packetized elementary stream signals; operating the transport stream encoder responsively to the single clock signal to form a transport stream signal from the plurality of packetized elementary stream signals, wherein the transport stream signal includes a plurality of data packets each formed using the transport stream encoder and select ones of the plurality of data packets formed by the transport stream encoder include synchronization data; and, operating the output interface responsively to the single clock reference to output the digital data stream signal in compliance with an predefined manner.

    摘要翻译: 一种用于利用单个时钟信号产生用于在压缩域传输系统中传输的数字数据流信号的装置和方法。 该设备包括电子耦合到传输流编码器的多个分组化的基本流编码器,电子耦合到适于生成数字数据流信号的输出接口。 该方法包括:响应于单个时钟序列操作每个分组化的基本流编码器以产生多个分组化的基本流信号; 响应于单个时钟信号操作传输流编码器以形成来自多个分组化的基本流信号的传输流信号,其中传输流信号包括多个数据分组,每个数据分组使用传输流编码器形成,并且选择多个 由传输流编码器形成的数据分组包括同步数据; 并且响应于单个时钟参考来操作输出接口以按照预定义的方式输出数字数据流信号。

    Transport processor interface and video recorder/playback apparatus in a
field structured datastream suitable for conveying television
information

    公开(公告)号:US6081650A

    公开(公告)日:2000-06-27

    申请号:US750442

    申请日:1996-12-06

    摘要: A transmitted high definition television signal is represented by a packetized datastream configured as a sequence of data fields (FIG. 1) with a non-uniform data rate due to unequal inter-data overhead information intervals. Each data field is prefaced by a Field Sync overhead segment followed by 312 packetized data segments each with associated overhead information (FEC). At a transmitter (FIG. 33), a transport processor (14) forms data packets with associated headers and exhibits uninterrupted operation at a constant uniform data rate, while supplying a packetized datastream to a network (17) which constructs sequential data fields by inserting the non-data overhead information into the datastream. The transport processor is advantageously operated at a constant uniform data rate without having to modify the original data field structure to accommodate the needs of the data field construction network. This result is facilitated by transferring data from the transport processor to an associated interface/buffer network (46) in response to a 3/8 symbol clock, in combination with a predetermined buffer fullness level. Specifically, a video recorder/playback device (15) receives a constant uniform data rate packetized datastream from the transport processor, and outputs a constant uniform data rate datastream to the interface/buffer network. A counterpart transport processor/decoder (86) at a receiver (FIG. 34) coacts with a data field processor (75) and similarly exhibits uninterrupted operation at a constant uniform data rate. A video recorder/playback device (85) receives a constant uniform data rate datastream from an interface/buffer (84) after removal of overhead information, and outputs a constant uniform data rate datastream to the transport decoder.

    Datastream packet alignment indicator in a system for assembling
transport data packets
    28.
    发明授权
    Datastream packet alignment indicator in a system for assembling transport data packets 失效
    用于组装传输数据包的系统中的数据流分组对齐指示符

    公开(公告)号:US5767912A

    公开(公告)日:1998-06-16

    申请号:US648148

    申请日:1996-05-23

    摘要: In a digital television signal processing system, a special codeword, a Packet Alignment Flag (PAF), is inserted into an MPEG codeword bitstream to signify the presence of a Group of Pictures (GOP). The PAF immediately precedes a Picture Start codeword for an "I" frame, which initiates a GOP. A data packet under construction when a PAF appears is terminated since a GOP is intended to begin at a packet boundary. Such termination may result in an abbreviated packet of less than a prescribed number of codewords needed to complete a data packet. The last word of each packet is designated as such to facilitate the subsequent combining of data packets with respective headers. An incomplete data packet is filled with null (zeroed bits) words to make up a complete data packet with a prescribed number of words.

    摘要翻译: PCT No.PCT / US93 / 11640 Sec。 371日期:1996年5月23日 102(e)日期1996年5月23日PCT提交1993年11月30日PCT公布。 出版物WO95 / 15652 日期:1995年6月8日在数字电视信号处理系统中,将特殊码字(分组对准标志(PAF))插入到MPEG码字比特流中,以表示存在一组图像(GOP)。 PAF紧接在“I”帧的图像起始码字之前,其启动GOP。 当PAF出现时正在构建的数据分组被终止,因为GOP旨在从分组边界开始。 这种终止可能导致小于完成数据分组所需的码字的规定数量的缩写分组。 每个分组的最后一个字被指定为便于数据分组与相应报头的后续组合。 一个不完整的数据包用空(零位)字填充以构成具有规定数量字的完整数据包。

    Media access protocol for packet access within a radio cell
    29.
    发明授权
    Media access protocol for packet access within a radio cell 失效
    用于无线电小区内的分组接入的媒体接入协议

    公开(公告)号:US5697066A

    公开(公告)日:1997-12-09

    申请号:US612310

    申请日:1996-03-07

    申请人: Anthony Acampora

    发明人: Anthony Acampora

    摘要: A method for packet signalling between a base station with a variable antenna system and remote stations uses pilot tones sent by the remote stations to the base station at the start of each data transfer period in which signalling will occur in either direction. The base station uses the pilot tone to configure the directional antenna for communication with the remote station during that data transfer period. The pilot tone signals are initiated by polling signals and polling acknowledgment signals.

    摘要翻译: 在具有可变天线系统的基站和远程站之间的分组信令的方法在每个数据传输周期的开始处使用由远程站发送到基站的导频音,其中信令将在任一方向上发生。 在该数据传输期间,基站使用导频音来配置用于与远程站通信的定向天线。 导频信号由轮询信号和轮询确认信号发起。

    Network protocol for integrating synchronous and asynchronous traffic on
a common serial data bus
    30.
    发明授权
    Network protocol for integrating synchronous and asynchronous traffic on a common serial data bus 失效
    用于在同一串行数据总线上集成同步和异步流量的网络协议

    公开(公告)号:US4593282A

    公开(公告)日:1986-06-03

    申请号:US485034

    申请日:1983-04-14

    CPC分类号: H04L12/4135 H04L12/64

    摘要: Contention among a plurality of synchronous and asynchronous devices connected to a shared communication medium for access to time slots in a sequence of frames is resolved by assigning a unique priority word including a priority code prefix to each device and granting access to a given slot by comparing the values of the priority words assigned to competing devices. The priority code prefix is assigned as a joint function of whether synchronous or asynchronous communication is desired and whether synchronous communication is being initiated or continued. In each assignment protocol, synchronous communication is enabled by assuring any device that initially gains access to a particular time slot continued access to the same slot in succeeding frames. If desired, devices with synchronous access may relinquish unused time slots to asynchronous traffic, while reserving the ability to resume synchronous communication.

    摘要翻译: 通过向每个设备分配包括优先级码前缀的唯一优先级字,并且通过比较来给予给定时隙的访问来解决连接到用于访问帧序列中的时隙的共享通信介质的多个同步和异步设备之间的争用 分配给竞争设备的优先级字的值。 优先级码前缀被分配为是否需要同步或异步通信以及正在启动还是继续同步通信的联合功能。 在每个分配协议中,同步通信通过确保最初获得对特定时隙的访问的任何设备在后续帧中持续访问相同的时隙来启用。 如果需要,具有同步访问的设备可以将未使用的时隙放弃到异步流量,同时保留恢复同步通信的能力。