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    BROADCAST RETRANSMITTING METHOD, BROADCAST RETRANSMITTING APPARATUS, REPLAY APPARATUS, AND BROADCAST RETRANSMITTING SYSTEM USING THE SAME
    5.
    发明申请
    BROADCAST RETRANSMITTING METHOD, BROADCAST RETRANSMITTING APPARATUS, REPLAY APPARATUS, AND BROADCAST RETRANSMITTING SYSTEM USING THE SAME 有权
    广播重建方法，广播重新调整装置，重放装置和使用该装置的广播重新采集系统

    公开(公告)号：US20110158154A1

    公开(公告)日：2011-06-30

    申请号：US12948378

    申请日：2010-11-17

    申请人： Yong-deok CHANG ,  Jung-jin KIM ,  Sun-bum HAN

    发明人： Yong-deok CHANG ,  Jung-jin KIM ,  Sun-bum HAN

    IPC分类号： H04B7/14 ,  H04B7/17

    CPC分类号： H04L27/0008 ,  H04H20/61 ,  H04H60/41 ,  H04L5/0062 ,  H04L27/0006 ,  H04L27/0012

    摘要： A broadcast retransmitting method, a broadcast retransmitting apparatus, a relay apparatus and a broadcast retransmitting system using the same, are provided. The broadcast retransmitting apparatus includes a demodulation unit which receives and demodulates a modulated broadcast, a modulation unit which modulates the demodulated broadcast, a spectrum sensing unit which detects an available band through spectrum sensing, and a control unit which retransmits the modulated broadcast to at least one surrounding apparatus. The broadcast retransmitting method includes receiving and demodulating a broadcast which has been modulated according to a first modulation method, and modulating the demodulated broadcast according to a second modulation method different from the first modulation method; detecting an available band from an idle band through spectrum sensing; and retransmitting the broadcast which has been modulated in the second modulation method to at least one surrounding apparatus using the detected available band.

    摘要翻译： 提供广播重发方法，广播重发装置，中继装置和使用其的广播重传系统。 广播重传装置包括接收和解调调制广播的解调单元，调制解调广播的调制单元，通过频谱感测检测可用频带的频谱感测单元，以及至少将调制广播重发的控制单元 一个周边设备。 广播重传方法包括：接收和解调根据第一调制方法被调制的广播，并且根据与第一调制方法不同的第二调制方法调制解调的广播; 通过频谱感测从空闲频段检测可用频带; 并且使用所检测的可用频带将已经以第二调制方法调制的广播重传到至少一个周围设备。

    DIGITAL BROADCASTING TRANSMISSION CAPABLE OF IMPROVING RECEIVNG AND EQUALIZING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF
    10.
    发明申请
    DIGITAL BROADCASTING TRANSMISSION CAPABLE OF IMPROVING RECEIVNG AND EQUALIZING PERFORMANCE AND SIGNAL PROCESSING METHOD THEREOF 有权
    数字广播传输能够提高接收和均衡性能及其信号处理方法

    公开(公告)号：US20090116580A1

    公开(公告)日：2009-05-07

    申请号：US12261935

    申请日：2008-10-30

    申请人： Eui-jun PARK ,  Yong-deok CHANG ,  Sung-soo PARK

    发明人： Eui-jun PARK ,  Yong-deok CHANG ,  Sung-soo PARK

    IPC分类号： H04B3/00 ,  H03M13/15 ,  G06F11/10

    CPC分类号： H04N21/2383 ,  H04L1/0041 ,  H04L1/0071 ,  H04L25/0224 ,  H04L2001/0093 ,  H04L2025/03382 ,  H04N19/89 ,  H04N21/23412 ,  H04N21/23608 ,  H04N21/23611 ,  H04N21/4344 ,  H04N21/4382

    摘要： A digital broadcast transmitting system and a signal processing method thereof that improves the receiving performance of the system. A digital broadcast transmitter includes a randomizer to receive and randomize a transport stream into a specified position of which stuff bytes are inserted, a replacement sequence generator to generate known data including a predefined sequence, a stuff-byte exchange unit to insert the known data into the specified position of the transport stream into which stuff bytes are inserted, an encoder to encode the transport stream output from the stuff-byte exchange unit for an error correction, and a transmission unit to modulate the encoded transport stream, RF-convert the modulated transport stream and transmit the RF-converted data. The digital broadcast receiving performance is improved even in an inferior multi-path channel by detecting the known data from the received transmission and using the known data for synchronization and equalization.

    摘要翻译： 一种提高系统的接收性能的数字广播发送系统及其信号处理方法。 一种数字广播发射机包括一个随机发生器，用于接收并随机化一个传输流到插入字节的指定位置;替换序列发生器，用于产生包括预定义序列的已知数据;填充字节交换单元，将已知数据插入 插入填充字节的传输流的指定位置，编码器，用于编码从填充字节交换单元输出的用于纠错的传输流;以及发送单元，用于调制编码的传输流，RF调制 传输流并传送RF转换的数据。 通过从接收到的传输中检测已知数据并使用已知的数据进行同步和均衡，即使在较差的多路径信道中也可以提高数字广播接收性能。