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25 条记录 (耗时 0.017 秒)

    Method for Processing Digital Signals, and Transmission/Reception System Implementing Said Method
    11.
    发明申请
    Method for Processing Digital Signals, and Transmission/Reception System Implementing Said Method 有权
    数字信号处理方法和实现所述方法的发送/接收系统

    公开(公告)号：US20110122960A1

    公开(公告)日：2011-05-26

    申请号：US12999274

    申请日：2009-06-08

    申请人： Giovanni Vitale ,  Vittoria Mignone

    发明人： Giovanni Vitale ,  Vittoria Mignone

    IPC分类号： H04L23/02

    CPC分类号： H04L27/34 ,  H03M13/11 ,  H03M13/1165 ,  H03M13/251 ,  H03M13/255 ,  H03M13/2707 ,  H03M13/356 ,  H04L1/0057 ,  H04L1/0071

    摘要： The present invention relates to a method for processing digital signals and to a transmission/reception system implementing said method; the present invention is based on the use of LDPC codes, in particular the LDPC code of the DVB-S2 standard, in combination with a QAM modulation, in particular the 1024QAM and 4096QAM modulations; in transmission, a bit permutation (Demux) is carried out prior to the QAM constellation mapping function; in reception, the bit permutation is carried out after the QAM constellation demapping function.

    摘要翻译： 本发明涉及一种处理数字信号的方法和实现所述方法的发送/接收系统; 本发明基于LDPC码的使用，特别是DVB-S2标准的LDPC码与QAM调制，特别是1024QAM和4096QAM调制的组合; 在传输中，在QAM星座映射函数之前执行位置换（Demux）; 在接收中，在QAM星座解映射功能之后进行比特置换。

    Signalling for offloading broadcast services from a mobile network
    12.
    发明授权
    Signalling for offloading broadcast services from a mobile network 有权

    公开(公告)号：US10568069B2

    公开(公告)日：2020-02-18

    申请号：US15895452

    申请日：2018-02-13

    申请人： TDF ,  RAI RADIOTELEVISIONE ITALIANA S.p.A.

    发明人： Frieder Juretzek

    IPC分类号： H04W72/00 ,  H04W4/06 ,  H04W48/12 ,  H04L29/08 ,  H04W88/08

    摘要： Disclosed is a method for accessing a broadcast service by a user equipment, the user equipment accessing a mobile network providing services carried on at least a first frequency carrier: —detecting at least one system information block within a downlink signal issued by the mobile network on the first frequency carrier, the system information block including cross-carrier signaling information indicating a resource location corresponding to a broadcast service provided by a non-unicast network on a second frequency carrier being disjoint from the first frequency carrier; —obtaining on-carrier signaling information related to at least a first broadcast service provided by the non-unicast network on the second frequency carrier, based on the resource location indicated in the system information block; and —accessing the first broadcast service based on the on-carrier signaling information.

    Method and system for transmitting satellite signals and receiver thereof
    13.
    发明授权
    Method and system for transmitting satellite signals and receiver thereof 有权

    公开(公告)号：US10237630B2

    公开(公告)日：2019-03-19

    申请号：US15868769

    申请日：2018-01-11

    申请人： RAI Radiotelevisione Italiana S.P.A.

    发明人： Alberto Morello ,  Vittoria Mignone ,  Bruno Sacco

    IPC分类号： H04N21/8547 ,  H04L1/00 ,  H04L5/00 ,  H04N21/61 ,  H04N21/2365 ,  H04B7/185 ,  H04L29/06

    摘要： A transmission system, a receiver and a method for satellite signal transmission, wherein the satellite signals includes respective data streams consisting of a sequence of data packets. The method incudes: subdividing the data packets of the data stream, through a splitter, into a first and at least one second data pseudo-streams; modulating the first and at least one second data pseudo-streams through a first and at least one second modulators, respectively; transmitting the modulated data pseudo-streams through respective transmission channels (Ch#1 . . . Ch#N), wherein, in order to generate the data pseudo-streams, the splitter will: select each data packet of the data stream; interrogate the modulators in a sequential manner in order to identify that modulator which, among the modulators, is available to accept the data packet, and send the latter to it; send a null data packet to the remaining modulators.

    System for the transmission of DVB/MPEG digital signals, particularly for satellite communication
    18.
    发明授权
    System for the transmission of DVB/MPEG digital signals, particularly for satellite communication 有权
    DVB / MPEG数字信号传输系统，特别适用于卫星通信

    公开(公告)号：US07607154B2

    公开(公告)日：2009-10-20

    申请号：US10678266

    申请日：2003-10-06

    申请人： Alberto Morello

    发明人： Alberto Morello

    IPC分类号： H04N7/20

    CPC分类号： H04N21/6373 ,  H04L1/0003 ,  H04L1/0009 ,  H04N21/2383 ,  H04N21/4382 ,  H04N21/6377 ,  H04N21/658

    摘要： The streams from a plurality of VBR coders or generic data sources (31) are multiplexed to a single stream by a multiplexer (32), while inserting null packets to make their bit-rates uniform. A null-packet eliminator (60) removes the null packets from the stream, while signaling their positions, and inputs the stream to an ACM modulator (62) which codes the stream with the maximum ruggedness allowed by the rate of the incoming useful packets, and transmits the stream over a satellite channel. In the receiving station, the stream is demodulated by an ACM demodulator (64), and the null packets are re-inserted into the stream by a re-inserter (66), based on the received signaling. A bit-rate control circuit (72) receives from the transmitting station, over a return channel, a signaling of the quality of the received signal (QoS) and modifies the bit-rate of the VBR coders or generic data sources (31) accordingly.

    摘要翻译： 来自多个VBR编码器或通用数据源（31）的流由多路复用器（32）复用到单个流，同时插入空分组以使其比特率均匀。 空分组消除器（60）从流中去除空分组，同时发信号通知它们的位置，并将流输入到ACM调制器（62），ACM调制器（62）以流入有用分组的速率允许的最大耐久性来编码流， 并通过卫星信道发送流。 在接收站中，流由ACM解调器（64）解调，并且基于接收到的信令，空分组被重新插入器（66）重新插入到流中。 比特率控制电路（72）通过返回信道从发送站接收接收信号质量的信令（QoS），并相应地修改VBR编码器或通用数据源（31）的比特率 。

    System for the transmission of DVB/MPEG digital signals, particularly for satellite communication
    19.
    发明申请
    System for the transmission of DVB/MPEG digital signals, particularly for satellite communication 有权
    DVB / MPEG数字信号传输系统，特别适用于卫星通信

    公开(公告)号：US20040073929A1

    公开(公告)日：2004-04-15

    申请号：US10678266

    申请日：2003-10-06

    申请人： RAI RADIOTELEVISIONE ITALIANA S.P.A

    发明人： Alberto Morello

    IPC分类号： H04N007/20

    CPC分类号： H04N21/6373 ,  H04L1/0003 ,  H04L1/0009 ,  H04N21/2383 ,  H04N21/4382 ,  H04N21/6377 ,  H04N21/658

    摘要： The streams from a plurality of VBR coders or generic data sources (31) are multiplexed to a single stream by a multiplexer (32), while inserting null packets to make their bit-rates uniform. A null-packet eliminator (60) removes the null packets from the stream, while signaling their positions, and inputs the stream to an ACM modulator (62) which codes the stream with the maximum ruggedness allowed by the rate of the incoming useful packets, and transmits the stream over a satellite channel. In the receiving station, the stream is demodulated by an ACM demodulator (64), and the null packets are re-inserted into the stream by a re-inserter (66), based on the received signaling. A bit-rate control circuit (72) receives from the transmitting station, over a return channel, a signaling of the quality of the received signal (QoS) and modifies the bit-rate of the VBR coders or generic data sources (31) accordingly.

    摘要翻译： 来自多个VBR编码器或通用数据源（31）的流由多路复用器（32）复用到单个流，同时插入空分组以使其比特率均匀。 空分组消除器（60）从流中去除空分组，同时发信号通知它们的位置，并将流输入到ACM调制器（62），ACM调制器（62）以流入有用分组的速率允许的最大耐久性来编码流， 并通过卫星信道发送流。 在接收站中，流由ACM解调器（64）解调，并且基于接收到的信令，空分组被重新插入器（66）重新插入到流中。 比特率控制电路（72）通过返回信道从发送站接收接收信号质量的信令（QoS），并相应地修改VBR编码器或通用数据源（31）的比特率 。

    System, decoder, and method for transmitting satellite signals
    20.
    发明授权
    System, decoder, and method for transmitting satellite signals 有权

    公开(公告)号：US10651924B2

    公开(公告)日：2020-05-12

    申请号：US14906840

    申请日：2014-07-21

    申请人： RAI RADIOTELEVISIONE ITALIANA S.P.A.

    发明人： Vittoria Mignone ,  Bruno Sacco ,  Alberto Morello

    IPC分类号： H04B7/185

    摘要： The invention relates to a system, a receiver and a method for satellite signal transmission, wherein the method includes the steps of grouping the signals into a data stream, splitting the data stream into at least a first and one or more second packets, transmitting the first packet via a first transmission channel (Ch #1), transmitting the one or more second packets via one or more second transmission channels (Ch #2), wherein the one or more second transmission channels (Ch #2) are distinct from the first transmission channel (Ch #1) and from one another.