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    Low cost VBS encoder and RF modulator for supplying VSB baseband signal to RF input of digital television receiver
    2.
    发明授权
    Low cost VBS encoder and RF modulator for supplying VSB baseband signal to RF input of digital television receiver 有权
    低成本的VBS编码器和RF调制器，用于将VSB基带信号提供给数字电视接收机的RF输入

    公开(公告)号：US06559898B1

    公开(公告)日：2003-05-06

    申请号：US09300299

    申请日：1999-04-27

    申请人： Richard W. Citta ,  Raymond C. Hauge ,  Thomas P. Horwitz ,  Paul A. Snopko

    发明人： Richard W. Citta ,  Raymond C. Hauge ,  Thomas P. Horwitz ,  Paul A. Snopko

    IPC分类号： H04N5386

    CPC分类号： H04N21/2383 ,  H04N5/21 ,  H04N5/40 ,  H04N5/44 ,  H04N21/4382

    摘要： An encoder-modulator for coupling a digital baseband television signal to a VSB digital television receiver that includes filters, equalization circuitry, and forward error correction circuitry for correcting signal impairments that are below a given threshold. The encoder-modulator processes the baseband signal for low power transmission on an RF channel with less-than-nominal bandpass characteristics. A coaxial cable or other low noise communication link directly connects the RF signal to the RF input of the television receiver. Any errors or signal impairments in the transmitted signal that are below the predetermined threshold are corrected by the filters and equalization circuitry built into the VSB digital television receiver.

    摘要翻译： 一种用于将数字基带电视信号耦合到VSB数字电视接收机的编码器调制器，其包括用于校正低于给定阈值的信号损伤的滤波器，均衡电路和前向纠错电路。 编码器调制器处理基带信号用于具有小于标称带通特性的RF信道上的低功率传输。 同轴电缆或其他低噪声通信链路将RF信号直接连接到电视接收机的RF输入端。 通过内置于VSB数字电视接收机内的滤波器和均衡电路校正低于预定阈值的发射信号中的任何误差或信号损伤。

    ROBUST DIGITAL COMMUNICATION SYSTEM
    9.
    发明申请
    ROBUST DIGITAL COMMUNICATION SYSTEM 有权

    公开(公告)号：US20090080537A1

    公开(公告)日：2009-03-26

    申请号：US11931504

    申请日：2007-10-31

    申请人： Wayne E. Bretl ,  Richard W. Citta ,  Mark Fimoff

    发明人： Wayne E. Bretl ,  Richard W. Citta ,  Mark Fimoff

    IPC分类号： H04N7/12

    CPC分类号： H04N21/2383 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/007 ,  H04L1/0071 ,  H04L2001/0092 ,  H04N21/4382

    摘要： Normally ordered robust VSB data are reordered in accordance with a first interleave to produce reordered robust VSB data. The reordered robust VSB data and ATSC data are reordered in accordance with a second interleave to produce normally ordered robust VSB data and reordered ATSC data. The normally ordered robust VSB data and reordered ATSC data are time multiplexed for transmission to a receiver. The receiver discards the reordered ATSC data or the normally ordered robust VSB data depending upon receiver type or user selection. A robust VSB receiver is able to process the normally ordered robust VSB data upstream of an outer decoder without an interleave thereby avoiding the delay associated with an interleave.