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    DTV TRANSMITTER AND METHOD OF CODING DATA IN DTV TRANSMITTER
    31.
    发明申请
    DTV TRANSMITTER AND METHOD OF CODING DATA IN DTV TRANSMITTER 有权
    数字电视发射机和数字电视发射机数据编码方法

    公开(公告)号：US20070098108A1

    公开(公告)日：2007-05-03

    申请号：US11551397

    申请日：2006-10-20

    申请人： In Choi ,  Kyung Kang ,  Hyoung Lee ,  Sung Hong

    发明人： In Choi ,  Kyung Kang ,  Hyoung Lee ,  Sung Hong

    IPC分类号： H04L27/00

    CPC分类号： H04N5/38 ,  H04L1/0041 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/08 ,  H04L27/02 ,  H04N5/213 ,  H04N5/4401

    摘要： A DTV transmitter includes a pre-processor pre-processing supplemental data, a multiplexer multiplexing pre-processed data with main data, and a byte-symbol converter converting each data byte of the multiplexed data into a symbol. It further includes a symbol processor processing each supplemental data symbol outputted from the byte-symbol converter. It encodes one of upper and lower bits of each supplemental data symbol into first and second data bits, post-decodes the first data bit, and outputs the post-decoded data bit and the second data bit as a symbol. The DTV transmitter further includes a symbol-byte converter converting each symbol outputted from the symbol processor into a data byte.

    摘要翻译： DTV发射机包括预处理器预处理补充数据，多路复用多路复用预处理数据与主数据，以及字节符号转换器，将多路复用数据的每个数据字节转换成符号。 它还包括处理从字节符号转换器输出的每个补充数据符号的符号处理器。 它将每个补充数据符号的高位和低位之一编码为第一和第二数据位，对第一数据位进行后解码，并输出后解码数据位和第二数据位作为符号。 DTV发射机还包括将符号处理器输出的每个符号转换为数据字节的符号字节转换器。

    Channel equalizer and digital television receiver using the same
    32.
    发明申请
    Channel equalizer and digital television receiver using the same 有权
    信道均衡器和数字电视接收机使用相同

    公开(公告)号：US20070058081A1

    公开(公告)日：2007-03-15

    申请号：US11595666

    申请日：2006-11-08

    申请人： Joon Kim ,  Sung Hong ,  In Choi ,  Kyung Kang ,  Jong Shin ,  Byoung Kim ,  Woo Kim ,  Jae Kim

    发明人： Joon Kim ,  Sung Hong ,  In Choi ,  Kyung Kang ,  Jong Shin ,  Byoung Kim ,  Woo Kim ,  Jae Kim

    IPC分类号： H04N5/00

    CPC分类号： H04N5/21 ,  H04L2025/0349 ,  H04N5/211

    摘要： Disclosed are a channel equalizer and digital television receiver using the same. The equalizer comprises a channel estimator, a channel distortion compensator and noise canceller. The channel estimator estimates an impulse response of a transmission channel from a received signal. The channel distortion compensator transforms and processes the received signal and the estimated impulse response. The noise canceller predicts and eliminates amplified noise generated during equalization.

    摘要翻译： 公开了使用其的信道均衡器和数字电视接收机。 均衡器包括信道估计器，信道失真补偿器和噪声消除器。 信道估计器从接收信号估计传输信道的脉冲响应。 信道失真补偿器对接收到的信号和估计的脉冲响应进行变换和处理。 噪声消除器预测并消除均衡期间产生的放大噪声。

    VSB TRANSMISSION SYSTEM
    34.
    发明申请
    VSB TRANSMISSION SYSTEM 有权
    VSB传动系统

    公开(公告)号：US20070248187A1

    公开(公告)日：2007-10-25

    申请号：US11767411

    申请日：2007-06-22

    申请人： In Hwan Choi ,  Young Gu ,  Kyung Kang ,  Kook Kwak

    发明人： In Hwan Choi ,  Young Gu ,  Kyung Kang ,  Kook Kwak

    IPC分类号： H03C1/52

    CPC分类号： H04L1/006 ,  H03M13/23 ,  H03M13/256 ,  H03M13/2939 ,  H04L1/0041 ,  H04L1/0065 ,  H04L27/02

    摘要： A vestigial sideband (VSB) modulation transmission system and a method for encoding an input signal in the system are disclosed. According to the present invention, the VSB transmission system includes a convolutional encoder for encoding an input signal, a trellis-coded modulation (TCM) encoder for encoding the convolutionally encoded signal, and a signal mapper mapping the trellis-coded signal to generate a corresponding output signal. Different types of the convolutional encoders are explored, and the experimental results showing the performances of the VSB systems incorporating each type of encoders reveals that a reliable data transmission can be achieved even at a lower input signal to noise ratio when a convolutional encoder is used as an error-correcting encoder in a VSB system.

    摘要翻译： 公开了一种残留边带（VSB）调制传输系统和系统中的输入信号编码方法。 根据本发明，VSB传输系统包括用于编码输入信号的卷积编码器，用于对卷积编码信号进行编码的网格编码调制（TCM）编码器，以及映射网格编码信号以生成对应的 输出信号。 探索了不同类型的卷积编码器，并且显示了包含各种类型的编码器的VSB系统的性能的实验结果表明，即使使用卷积编码器作为较低的输入信噪比，也可以实现可靠的数据传输 VSB系统中的纠错编码器。

    VSB RECEPTION SYSTEM WITH ENHANCED SIGNAL DETECTION FOR PROCESING SUPPLEMENTAL DATA
    36.
    发明申请
    VSB RECEPTION SYSTEM WITH ENHANCED SIGNAL DETECTION FOR PROCESING SUPPLEMENTAL DATA 有权
    具有增强信号检测的VSB接收系统用于处理补充数据

    公开(公告)号：US20070070252A1

    公开(公告)日：2007-03-29

    申请号：US11560307

    申请日：2006-11-15

    申请人： In Hwan Choi ,  Young Gu ,  Kyung Kang ,  Kook Kwak

    发明人： In Hwan Choi ,  Young Gu ,  Kyung Kang ,  Kook Kwak

    IPC分类号： H03D1/00 ,  H04N5/00

    CPC分类号： H04N21/2383 ,  H03M13/27 ,  H03M13/2936 ,  H04L1/0041 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/007 ,  H04L1/0071 ,  H04L25/03057 ,  H04L25/061 ,  H04L25/062 ,  H04L27/04 ,  H04L27/06 ,  H04L2025/03382 ,  H04N5/211 ,  H04N5/4401 ,  H04N7/52 ,  H04N21/235 ,  H04N21/435 ,  H04N21/4382

    摘要： A VSB reception system includes a sequence generator for decoding a symbol corresponding to the supplemental data and generating a predefined sequence included in the supplemental data at VSB transmission system. The reception system also includes a modified legacy VSB receiver for processing the data received from the VSB transmission system in a reverse order of the VSB transmission system by using the sequence, and a demultiplexer for demultiplexing the data from the modified legacy VSB receiver into the MPEG data and the supplemental data. The VSB reception system also includes a supplemental data processor for processing the supplemental data segment from the demultiplexer in a reverse order of the transmission system, to obtain the supplemental data, thereby carrying out the slicer prediction, decoding, and symbol decision more accurately by using the predefined sequence, to improve a performance.

    摘要翻译： VSB接收系统包括用于对与补充数据相对应的符号进行解码的序列发生器，并且在VSB传输系统中生成包括在补充数据中的预定序列。 该接收系统还包括经修改的传统VSB接收机，用于通过使用该序列以VSB传输系统的相反顺序处理从VSB传输系统接收的数据;以及解复用器，用于将经修改的传统VSB接收机的数据解复用为MPEG 数据和补充数据。 VSB接收系统还包括补充数据处理器，用于按照传输系统的相反顺序从解复用器处理补充数据段，以获得补充数据，从而更准确地使用限幅器预测，解码和符号决定 预定义的顺序，以提高性能。

    DTV TRANSMITTER AND METHOD OF CODING MAIN AND ENHANCED DATA IN DTV TRANSMITTER
    38.
    发明申请
    DTV TRANSMITTER AND METHOD OF CODING MAIN AND ENHANCED DATA IN DTV TRANSMITTER 有权
    数字电视发射机和数字电视发射机中主要和增强数据编码的方法

    公开(公告)号：US20070180350A1

    公开(公告)日：2007-08-02

    申请号：US11616784

    申请日：2006-12-27

    申请人： In Hwan Choi ,  Kyung Kang ,  Kook Kwak

    发明人： In Hwan Choi ,  Kyung Kang ,  Kook Kwak

    IPC分类号： H03M13/00

    CPC分类号： H03M13/256 ,  H03M13/356 ,  H03M13/6538 ,  H04N21/235 ,  H04N21/236 ,  H04N21/434 ,  H04N21/4345 ,  H04N21/435 ,  H04N21/8126

    摘要： A DTV transmitter includes a pre-processor pre-processing enhanced data, a data formatter generating enhanced data packets including the pre-processed enhanced data, and a multiplexer multiplexing the enhanced data packets with main data packets. The transmitter further includes an RS encoder RS-coding the multiplexed packets by adding systematic RS parity data to each main data packet and by adding non-systematic RS parity place holders to each enhanced data packet, and a data interleaver interleaving the RS-coded packets. The non-systematic RS parity place holders are placed after the enhanced data within each interleaved enhanced data packet, and a sequence of known data place holders is periodically included in the interleaved enhanced data packets.

    摘要翻译： DTV发射机包括预处理器预处理增强数据，产生包括预处理增强数据的增强数据分组的数据格式化器，以及复用多个增强数据分组与主数据分组的多路复用器。 发射机还包括RS编码器，通过向每个主数据分组添加系统RS奇偶校验数据并且通过将非系统RS奇偶校验位保持器添加到每个增强数据分组来RS编码复用分组，以及数据交织器交织RS编码分组 。 非系统RS奇偶校验位保持器被放置在每个交织的增强数据分组内的增强数据之后，并且已知数据占位符的序列被周期性地包括在交织的增强数据分组中。