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    • 124. 发明授权
    • Trellis encoder and trellis encoding device having the same
    • 网格编码器和网格编码设备具有相同的效果
    • US08806311B2
    • 2014-08-12
    • US13181154
    • 2011-07-12
    • Eui-jun ParkJung-jin KimSeok-hyun YoonKyo-shin ChooKeon-yong Seok
    • Eui-jun ParkJung-jin KimSeok-hyun YoonKyo-shin ChooKeon-yong Seok
    • H03M13/03
    • H04L1/004H03M13/235H04N21/2383
    • A trellis encoding device includes a plurality of trellis encoders to perform trellis-encoding of a transport stream into which a supplementary reference signal (SRS) has been inserted, and performs a memory reset in a region that precedes an SRS; and a parity compensation unit to compensate for parities of the transport stream in accordance with values stored in memories included in the trellis encoders. The plurality of trellis encoders may be implemented in diverse types. The trellis encoding device can perform a memory reset selectively using the stored value of the memory and the inverted value thereof, or selectively using the stored value of the memory and a fixed value. By properly resetting the memory in processing the transport stream into which the SRS has been inserted, DC offset can be reduced.
    • 网格编码装置包括多个网格编码器,用于对已经插入补充参考信号(SRS)的传输流进行网格编码,并且在SRS之前的区域中执行存储器复位; 以及奇偶补偿单元,用于根据存储在包括在网格编码器中的存储器中的值来补偿传输流的奇偶校验。 多个网格编码器可以以不同类型实现。 网格编码装置可以使用存储器的存储值和其反相值有选择地执行存储器复位,或者选择性地使用存储器的存储值和固定值。 通过在处理已经插入SRS的传输流中适当地重置存储器,可以减小DC偏移。
    • 125. 发明授权
    • Digital broadcasting transmission and/or reception system to improve receiving performance and signal processing method thereof
    • 数字广播传输和/或接收系统,以提高接收性能及其信号处理方法
    • US08737495B2
    • 2014-05-27
    • US12618132
    • 2009-11-13
    • Hae-jo JeongYong-deok ChangEui-jun Park
    • Hae-jo JeongYong-deok ChangEui-jun Park
    • H04L27/28H04L27/00
    • H04L1/0041H04H20/42H04H20/46H04H20/72H04H40/27H04L1/0045H04L1/006H04L1/0065H04L1/0071H04L7/04H04L2007/045
    • A digital broadcasting transmission and/or reception system having an improved reception performance and a signal-processing method thereof. A digital broadcasting transmitter comprises a randomizer to input and randomize data streams including a plurality of segments having at least one segment having one or more null packets, a null packet exchanger to create known data having a predetermined pattern and to replace the null packets at positions of the segments having the null packets of the randomized data streams to insert the known ‘data, an encoder to encode the data streams to which the known data is inserted, and a modulation/RF unit to modulate, RF-modulate, and transmit the encoded data streams. A digital broadcasting receiver detects the known data’ from a signal received from the digital broadcasting transmitter and uses the detected known data for synchronization and equalization, so that a digital broadcasting reception performance of the digital broadcasting receiver can be improved at poor multipath channels.
    • 一种具有改善的接收性能的数字广播发射和/或接收系统及其信号处理方法。 数字广播发射机包括随机化器,用于输入和随机化包括具有至少一个具有一个或多个空分组的分段的多个分段的数据流;零分组交换机,用于创建具有预定模式的已知数据,并在位置 具有随机化数据流的空分组的段插入已知的数据,编码器对已知数据插入的数据流进行编码,以及调制/ RF单元来调制,RF调制和发送 编码数据流。 数字广播接收机根据从数字广播发射机接收的信号检测已知数据,并使用检测到的已知数据进行同步和均衡,从而可以在恶劣的多径信道下改善数字广播接收机的数字广播接收性能。