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    • 3. 发明申请
    • Apparatus for channel equalization and method thereof
    • 信道均衡装置及其方法
    • US20060023799A1
    • 2006-02-02
    • US11178117
    • 2005-07-08
    • Kyong KangWoo KimIn ChoiByoung KimYong Suh
    • Kyong KangWoo KimIn ChoiByoung KimYong Suh
    • H04K1/10H03D1/00H03D1/04
    • H04L25/022H04L25/0212H04L25/03159H04L2025/03496H04L2025/03522H04L2025/03617H04N5/211H04N5/4401
    • Channel Equalization of a digital TV is disclosed. In channel equalization for restoring an original signal from a digital TV reception signal having passed through a channel, the present invention includes estimating an impulse response of the channel from a received signal having passed through the channel using conjugate-gradient algorithm, finding an equalizer coefficient in a frequency domain using the estimated impulse response of the channel, outputting a signal equalized by multiplying a signal resulting from transforming the received signal into the frequency domain by the found equalizer coefficient, and predicting to remove an amplified noise of the equalized signal using the conjugate-gradient algorithm in a time domain. Accordingly, the variation of the channel impulse response according to time can be tracked in the dynamic channel having fast channel variation as well as the static channel, whereby equalizing performance can be enhanced.
    • 数字电视的频道均衡被公开。 在用于从已经通过信道的数字TV接收信号恢复原始信号的信道均衡中,本发明包括使用共轭梯度算法从已经通过信道的接收信号估计信道的脉冲响应,找到均衡器系数 在使用所述信道的所述估计的脉冲响应的频域中,通过将由所述接收信号变换为频域而得到的信号乘以所述均衡器系数,输出均衡的信号,并且使用所述均衡信号来预测去除所述均衡信号的放大噪声 在时域中的共轭梯度算法。 因此,可以在具有快速信道变化的动态信道以及静态信道中跟踪根据时间的信道脉冲响应的变化,从而可以提高均衡性能。
    • 4. 发明申请
    • Digital television transmitter/receiver and method of processing data in digital television transmitter/receiver
    • 数字电视发射机/接收机和数字电视发射机/接收机处理数据的方法
    • US20070136643A1
    • 2007-06-14
    • US11514124
    • 2006-08-30
    • Kyung KangIn ChoiKook KwakJa KooKyung ShinYong SuhYoung HongSung Hong
    • Kyung KangIn ChoiKook KwakJa KooKyung ShinYong SuhYoung HongSung Hong
    • H03M13/00
    • H04N21/2383H03M13/1515H03M13/2936H04N21/4382
    • A digital television (DTV) transmitter/receiver and a method of processing data in the DTV transmitter/receiver are disclosed. In the DTV transmitter, a pre-processor pre-processes the enhanced data by coding the enhanced data for forward error correction (FEC) and expanding the FEC-coded enhanced data. A data formatter generates enhanced data packets including the pre-processed enhanced data and inserts known data to at least one of the enhanced data packets. A first multiplexer multiplexes the enhanced data packets with main data packets including the main data. And, an RS encoder RS-codes the multiplexed main and enhanced data packets, the RS encoder adding systematic parity data to each main data packet and adding RS parity place holders to each enhanced data packet. Herein, the RS encoder may insert non-systematic RS parity data or null data into the RS parity place holders included in each enhanced data packet.
    • 公开了一种数字电视(DTV)发射机/接收机以及在DTV发射机/接收机中处理数据的方法。 在DTV发射机中,预处理器通过对用于前向纠错(FEC)的增强数据进行编码并扩展FEC编码的增强数据来对处理增强数据进行预处理。 数据格式化器产生包括预处理的增强数据的增强数据分组,并将已知数据插入到增强数据分组中的至少一个。 第一复用器将增强的数据分组与包括主数据的主数据分组复用。 并且,RS编码器对多路复用的主增强数据包进行RS编码,RS编码器将系统奇偶校验数据添加到每个主数据分组,并将RS奇偶校验位保持器添加到每个增强数据分组。 这里,RS编码器可以将非系统RS奇偶校验数据或空数据插入到包括在每个增强数据分组中的RS奇偶校验位保持器中。