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    • 4. 发明授权
    • Digital broadcasting transmission/reception devices capable of improving a receiving performance and signal processing method thereof
    • 能够提高接收性能的数字广播发送/接收装置及其信号处理方法
    • US08498364B2
    • 2013-07-30
    • US12260555
    • 2008-10-29
    • Yong-deok ChangHae-joo JeongJoon-soo Kim
    • Yong-deok ChangHae-joo JeongJoon-soo Kim
    • H04L27/06
    • H04L25/03866H04L1/0057H04L1/006H04L1/0065H04L1/0071
    • Disclosed is a digital broadcasting transmission/reception system having an improved reception performance and in a signal-processing method thereof. A digital broadcasting transmitter comprises a TS stream generator for inputting robust and normal packets having stuff bytes in predetermined positions and generating dual TS stream by inserting the robust packets between the normal packets; a randomizer for randomizing the dual TS stream; a stuff byte exchanger for replacing the stuff bytes of a randomized data streams from the randomizer to a predetermined known data; and an encoder for encoding a data streams to which the known data is inserted. Accordingly, the present invention detects the known data from a signal received from a reception side and uses the detected known data for synchronization and equalization, so that the digital broadcasting reception performance can be improved at poor multipath channels.
    • 公开了一种具有改善的接收性能的数字广播发射/接收系统及其信号处理方法。 数字广播发射机包括一个TS流发生器,用于在预定位置输入具有填充字节的鲁棒和正常分组,并通过在正常分组之间插入鲁棒分组来生成双TS流; 用于随机化双TS流的随机化器; 一种填充字节交换器,用于将随机化数据流的填充字节替换为预定的已知数据; 以及用于对已知数据插入到其中的数据流进行编码的编码器。 因此,本发明根据从接收侧接收到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提高数字广播接收性能。
    • 6. 发明授权
    • Outer encoder and outer encoding method thereof
    • 外编码器及其外编码方法
    • US07930618B2
    • 2011-04-19
    • US11504029
    • 2006-08-15
    • Jung-pil YuHae-joo JeongEui-jun ParkJoon-soo KimYong-sik KwonJin-Hee JeongYong-deok ChangKum-ran JiJong-hun Kim
    • Jung-pil YuHae-joo JeongEui-jun ParkJoon-soo KimYong-sik KwonJin-Hee JeongYong-deok ChangKum-ran JiJong-hun Kim
    • H03M13/00
    • H04N21/4382H03M13/2903H03M13/2957H03M13/356H03M13/6538H04L1/0041H04L1/0043H04L1/0059H04L1/0065H04L1/0067H04L1/007H04L1/0083H04N21/234327H04N21/2383H04N21/631
    • An outer encoder includes a bit detector that receives a turbo stream provided with a parity insertion region and that detects data bits from the turbo stream, an encoder that convolution-encodes the detected data bits, and a bit inserter that inserts an encoded value outputted from the encoder into the parity insertion region in the turbo stream. The encoder includes a first register; a second register, in which when a bit value is stored in the first register, a stored value pre-stored in the first register is shifted and stored; a third register, in which when a bit value is stored in the second register, a stored value pre-stored in the second register is shifted and stored; a first adder adding the input bit value, the stored value pre-stored in the first register, and the stored value pre-stored in the third register, and storing the resultant value of addition in the first register, if a specified bit is inputted; and a second adder adding the input bit value, the stored value pre-stored in the first register, and the stored value pre-stored in the second register to output the resultant value of addition. Accordingly, only the turbo stream in the dual transport stream is robustly processed.
    • 外部编码器包括:位检测器,其接收设置有奇偶校验插入区域并且从turbo流检测数据位的turbo流;对所检测到的数据位进行卷积编码的编码器;以及插入从 编码器进入turbo流中的奇偶校验插入区域。 编码器包括第一寄存器; 第二寄存器,其中当位值存储在第一寄存器中时,预先存储在第一寄存器中的存储值被移位并存储; 第三寄存器,其中当位值存储在第二寄存器中时,预存储在第二寄存器中的存储值被移位并存储; 如果输入了指定的位,第一加法器将预先存储在第一寄存器中的存储值和预先存储在第三寄存器中的存储值相加,并将加法结果存储在第一寄存器中, ; 以及第二加法器,将输入比特值,预先存储在第一寄存器中的存储值和预先存储在第二寄存器中的存储值相加,以输出所得到的加法值。 因此,只有双传输流中的turbo流被鲁棒地处理。