Broadcast receiver and method of operating the same to avoid muting caused by memory reallocation
    1.
    发明公开
    Broadcast receiver and method of operating the same to avoid muting caused by memory reallocation 有权
    为防止通过内存重映射静音的无线电接收器和操作程序

    公开(公告)号:EP2728758A1

    公开(公告)日:2014-05-07

    申请号:EP13185799.7

    申请日:2013-09-24

    CPC classification number: H04B7/18591 H04H2201/16

    Abstract: A hybrid broadcast receiver (20) and method (300) of operating a memory (28) in the receiver (20). The memory (28) is used to store received data being processed in the receiver (20). The receiver (20) is configured to receive both a terrestrial signal (12) broadcast by a terrestrial transmitter (14) and a satellite signal (16) broadcast by a satellite transmitter (18). Terrestrial data from the terrestrial signal (12) is stored in a terrestrial portion (30) of the memory (28) that includes a top end (36) or first location (52) of the memory (28). Satellite data from the satellite signal (16) is stored in a satellite portion (32) of the memory (28) that includes a bottom end (38) or last location of the memory (28).

    Abstract translation: 混合广播接收机(20)和接收器(20)操作存储器(28)的方法(300)。 所述存储器(28)用于存储所接收的数据在接收器(20)进行处理。 所述接收器(20)被配置成接收由地面发射机(14)和由卫星发射机(18)广播的卫星信号(16)广播的地面信号(12)。 从地面信号(12)的地面的数据被存储在存储器(28)的地面部分(30)做了包括存储器(28)的顶端(36)或第一位置(52)。 从卫星信号(16)的卫星数据被存储在存储器(28)的卫星部分(32)做了包括存储器(28)的底端(38)或负载位置。

    Satellite receiver performance enhancements
    2.
    发明公开
    Satellite receiver performance enhancements 有权
    Satellitenempfängerleistungsverbesserungen

    公开(公告)号:EP2579494A1

    公开(公告)日:2013-04-10

    申请号:EP12185496.2

    申请日:2012-09-21

    CPC classification number: H04L1/0047 H04L1/201

    Abstract: Long time interleaver and listenable audio performance enhancements for a satellite receiver are presented. One enhancement includes comparing a correlation and a predetermined threshold value and blocking satellite signal data transmission from entry into long time interleaver (LTI) device circuitry and forward error correction (FEC) circuitry when the correlation value is the same as, or less than the predetermined threshold value. Another enhancement includes using Reed-Solomon codeword error checking to prevent erroneous baseband signal data from being accepted as good baseband signal data. A further enhancement includes storing symbol timing and frequency data during a strong signal condition of the satellite receiver and using this stored data when the satellite receiver encounters a weak signal condition. Another enhancement includes mitigating DC offset noise in a satellite receiver having a zero-IF tuner.

    Abstract translation: 介绍了卫星接收机的长时间交织和可听音频性能增强。 一个增强包括当相关值相同或小于预定值时,将相关性和预定阈值进行比较并阻止卫星信号数据传输从进入长时间交织器(LTI)设备电路和前向纠错(FEC)电路) 阈值。 另一个增强包括使用Reed-Solomon码字错误检查来防止错误的基带信号数据被接受为良好的基带信号数据。 进一步的增强包括在卫星接收机的强信号状态期间存储符号定时和频率数据,并且当卫星接收机遇到弱信号条件时使用该存储的数据。 另一个增强措施包括减轻具有零中频调谐器的卫星接收机中的直流偏移噪声。

    A receiver for recovering universal services in a spot beam satellite transmission system and method
    5.
    发明公开
    A receiver for recovering universal services in a spot beam satellite transmission system and method 审中-公开
    接收器,用于普遍服务在一个点波束卫星传输系统和方法,所述恢复

    公开(公告)号:EP2738954A3

    公开(公告)日:2014-07-30

    申请号:EP13193787.2

    申请日:2013-11-21

    Abstract: A terrestrial receiver (58) and method for recovering universal services in a spot beam satellite radio transmission system (46) including at least two discrete signal sources (48 and 50) producing first and second adjacent or overlapping spot beam loci (52 and 54) within a coverage area (42), wherein the signals (60 and 62) forming the spot beams (52 and 54) each contain repeating time aligned universal services having a master synchronizing frame, at least one common channel, and at least one spot specific channel with differing frequency and/or polarization. The receiver (58) switches among a plurality of antenna elements (12) to receive a signal. At least a portion of plurality of antenna elements (12) receive a transmitted signal, such that the transmitted signal includes a plurality of sub-channels that are transmitted in predetermined time intervals. A switching device (14) is in communication with the plurality of antenna elements (12), and switches among single antenna elements (12) to receive the transmitted signal. A controller (16) is in communication with the switching device (14), and commands the switching device (14) to select each of the antenna elements (12) separately in predetermined periods of time based upon the predetermined time intervals of each of the master synchronizing frames. A power level of the transmitted signal is determined during the predetermined period of time that corresponds to the predetermined time intervals, and the controller (16) commands the switching device (14) to switch to an antenna element (12) based upon the determined power level.

    System and method for receiving and combining multiple antenna signals
    7.
    发明公开
    System and method for receiving and combining multiple antenna signals 有权
    系统与Verfahren zum Empfangen und Kombinieren von mehreren Antennensignalen

    公开(公告)号:EP2009814A1

    公开(公告)日:2008-12-31

    申请号:EP08157493.1

    申请日:2008-06-03

    CPC classification number: H04B7/0857

    Abstract: A receiver system (10) and method (100) of receiving signals is provided. The receiver system (10) includes a plurality of antennas that receive signals and are proximate to one another, a plurality of tuners, a signal combiner (20), and a symbol timing combiner (22). The plurality of tuners are in communication with the plurality of antennas. The signal combiner (20) is in communication with the plurality of tuners, and combines an output of each of the plurality of tuners. The symbol timing combiner (22) is in communication with the signal combiner (20) and the plurality of tuners, wherein an output of the signal combiner (20) and outputs from each of the tuners are received by the symbol timing combiner (22), and the symbol timing combiner (22) emits a combined symbol timing output that is received by each of the tuners. The plurality of tuners process the signals communicated from the plurality of antennas based upon the combined symbol timing output.

    Abstract translation: 提供了一种接收信号的接收机系统(10)和方法(100)。 接收机系统(10)包括接收信号并彼此靠近的多个天线,多个调谐器,信号组合器(20)和符号定时组合器(22)。 多个调谐器与多个天线通信。 信号组合器(20)与多个调谐器通信,并且组合多个调谐器中的每一个的输出。 符号定时组合器(22)与信号组合器(20)和多个调谐器通信,其中信号组合器(20)的输出和每个调谐器的输出由符号定时组合器(22)接收, ,并且符号定时组合器(22)发射由每个调谐器接收的组合符号定时输出。 多个调谐器基于组合符号定时输出处理从多个天线传送的信号。

    A receiver for recovering universal services in a spot beam satellite transmission system and method
    8.
    发明公开
    A receiver for recovering universal services in a spot beam satellite transmission system and method 审中-公开
    接收器,用于普遍服务在一个点波束卫星传输系统和方法,所述恢复

    公开(公告)号:EP2738954A2

    公开(公告)日:2014-06-04

    申请号:EP13193787.2

    申请日:2013-11-21

    Abstract: A terrestrial receiver (58) and method for recovering universal services in a spot beam satellite radio transmission system (46) including at least two discrete signal sources (48 and 50) producing first and second adjacent or overlapping spot beam loci (52 and 54) within a coverage area (42), wherein the signals (60 and 62) forming the spot beams (52 and 54) each contain repeating time aligned universal services having a master synchronizing frame, at least one common channel, and at least one spot specific channel with differing frequency and/or polarization. The receiver (58) switches among a plurality of antenna elements (12) to receive a signal. At least a portion of plurality of antenna elements (12) receive a transmitted signal, such that the transmitted signal includes a plurality of sub-channels that are transmitted in predetermined time intervals. A switching device (14) is in communication with the plurality of antenna elements (12), and switches among single antenna elements (12) to receive the transmitted signal. A controller (16) is in communication with the switching device (14), and commands the switching device (14) to select each of the antenna elements (12) separately in predetermined periods of time based upon the predetermined time intervals of each of the master synchronizing frames. A power level of the transmitted signal is determined during the predetermined period of time that corresponds to the predetermined time intervals, and the controller (16) commands the switching device (14) to switch to an antenna element (12) based upon the determined power level.

    Abstract translation: 的地面接收器(58)和方法,用于在一个点波束卫星的无线电传输系统中恢复通用服务(46)包括至少两个离散信号源(48和50)产生第一和第二相邻的或重叠的点波束基因座(52和54) 形成点波束(52和54)各自包含重复时间具有主同步帧对准普遍的服务,至少一个公共信道,和至少一个点的特定覆盖区域(42),其中所述信号(60和62)内 信道具有不同的频率和/或偏振。 所述接收器(58)的天线元件(12)的多元性中切换到接收的信号。 至少天线元件(12)的多个部分接收反式mitted信号,审查做了反式mitted信号包括子信道与多个做在预定的时间间隔反mitted。 一种开关装置(14)与天线元件的多元性(12)连通,并且单个天线元件(12)之间切换以接收所述反式mitted信号。 控制器(16)与所述切换装置(14)通信,并且基于每个的的预定时间间隔的预定时间段分别命令所述开关装置(14)来选择每个天线元件(12)的 掌握同步帧。 期间的预定时间段的反式mitted信号的功率电平被确定的开采确实对应于预定的时间间隔,并且所述控制器(16)命令所述开关装置(14)切换到天线元件(12)基于所确定的开采功率 水平。

    Transmission of services with different performance levels
    10.
    发明公开
    Transmission of services with different performance levels 审中-公开
    不同级别的性能服务的传输

    公开(公告)号:EP1633070A3

    公开(公告)日:2008-10-22

    申请号:EP05076984.3

    申请日:2005-08-29

    Abstract: The present invention generally relates to the transmission of digital data, and more particularly, to the transmission of digital data in a satellite digital audio radio ("SDAR") system. In the SDAR system, there may be different types of required services. Some of these services may be considered high priority and others may be of a lower priority. Current SDAR systems have the same performance on all user data. Therefore, there is a need to vary the performance of different services.
    The present invention provides a method and apparatus for optimizing the throughput (i.e. information) in a digital transmission system by transmitting the different services with different performance levels. The present invention addresses the need in the art to vary the performance of different services (i.e., levels of data). Because the performance of the primary level of data will not be equal to the performance of the secondary level of data, the primary level will need to be further protected. The primary level data may be streaming data. The secondary level data does not need as much protection because it may be rebroadcast repeatedly. The easiest and most cost effective solution is to integrate multiple symbols for a secondary level bit. The present invention provides a method and apparatus in which the power level for the data levels can be set within each data packet using a message header providing the different services with different levels of performance.

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