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1. 发明授权

US5546132A NTSC interference detector 失效
标题翻译： NTSC干扰检测器
公开(公告)号：US5546132A
公开(公告)日：1996-08-13
申请号：US351581
申请日：1994-12-07
申请人： Kyeong S. Kim , Jong K. Kim
发明人： Kyeong S. Kim , Jong K. Kim
IPC分类号： H04N7/015 , H04N5/21 , H04N5/44 , H04N7/08 , H04N7/00
CPC分类号： H04N7/0803 , H04N5/21 , H04N5/4401
摘要： An NTSC interference detector is disclosed which includes an NTSC extracting filter for extracting an NTSC signal component from a received I-channel signal; a comparing portion for integrating the NTSC signal output from the NTSC extracting filter for a predetermined period and deciding whether the NTSC signal component is above a first reference value or not; and a control signal generator for adding the signal output from the comparing portion for every horizontal sync, deciding the presence or absence of NTSC interference according to a second reference value, and outputting a control signal according to the presence or absence of NTSC interference, thereby accomplishing a precise detection of NTSC interference.
摘要翻译：公开了一种NTSC干扰检测器，其包括用于从接收的I信道信号中提取NTSC信号分量的NTSC提取滤波器; 比较部分，用于在预定时间段内对从NTSC提取滤波器输出的NTSC信号进行积分，并确定NTSC信号分量是否高于第一参考值; 以及控制信号发生器，用于将每个水平同步的比较部分输出的信号相加，根据第二参考值确定NTSC干扰的存在或不存在，并根据是否存在NTSC干扰输出控制信号，从而完成NTSC干扰的精确检测。

2. 发明授权

US5408262A Cochannel interference filter for HDTV transmission system 失效
标题翻译：用于HDTV传输系统的信道干扰滤波器
公开(公告)号：US5408262A
公开(公告)日：1995-04-18
申请号：US176272
申请日：1993-12-30
申请人： Kyeong S. Kim , Moon K. Lee
发明人： Kyeong S. Kim , Moon K. Lee
IPC分类号： H04N5/21 , H04N5/44 , H04N7/015 , H04N7/08 , H04N5/38
CPC分类号： H04N7/0803 , H04N5/21 , H04N5/44 , H04N7/015
摘要： A cochannel interference filter for a HDTV transmission system comprising a post-comb filter. The post-comb filter comprises first and second feedforward circuits. The first feedforward circuit includes a first adder and a first delay circuit. The first adder has a first input connected to an output of a data clock recovery circuit. The first delay circuit has an input connected to the output of the data clock recovery circuit and an output connected to a second input of the first adder. The second feedforward circuit includes a second adder and a second delay circuit. The second adder has a first input connected to an output of the first adder. The second delay circuit has an input connected to the output of the first adder and an output connected to a second input of the second adder. Also, the post-comb filter comprises third and fourth feedforward circuits. The third feedforward circuit includes a third adder and a third delay circuit. The third adder has a first input connected to an output of the second adder. The third delay circuit has an input connected to the output of the second adder and an output connected to a second input of the third adder. Similarly, the fourth feedforward circuit includes a fourth adder and a fourth delay circuit.
摘要翻译：一种用于包括后梳状滤波器的HDTV传输系统的同信道干扰滤波器。后梳状滤波器包括第一和第二前馈电路。第一前馈电路包括第一加法器和第一延迟电路。第一加法器具有连接到数据时钟恢复电路的输出的第一输入。第一延迟电路具有连接到数据时钟恢复电路的输出的输入和连接到第一加法器的第二输入的输出。第二前馈电路包括第二加法器和第二延迟电路。第二加法器具有连接到第一加法器的输出端的第一输入端。第二延迟电路具有连接到第一加法器的输出的输入端和连接到第二加法器的第二输入端的输出端。此外，后梳状滤波器包括第三和第四前馈电路。第三前馈电路包括第三加法器和第三延迟电路。第三加法器具有连接到第二加法器的输出端的第一输入端。第三延迟电路具有连接到第二加法器的输出的输入端和连接到第三加法器的第二输入端的输出端。类似地，第四前馈电路包括第四加法器和第四延迟电路。

3. 发明授权

US5602601A Phase error corrector for HDTV reception system 失效
标题翻译：高清电视接收系统的相位误差校正器
公开(公告)号：US5602601A
公开(公告)日：1997-02-11
申请号：US426182
申请日：1995-04-21
申请人： Jong G. Kim , Kyeong S. Kim , Su W. Jung
发明人： Jong G. Kim , Kyeong S. Kim , Su W. Jung
IPC分类号： H04N19/89 , H04L27/02 , H04N5/21 , H04N11/24
CPC分类号： H04N5/21 , H04L27/02 , H04N11/008
摘要： A phase error corrector for an HDTV reception system, which can correct data level errors by reducing phase errors coming from local oscillators, includes a gain and offset adjustment unit for adjusting a gain and an offset of incoming I data, a Hilbert transform filter for performing a Hilbert transform filtering of the I data received from the gain and offset adjustment unit for generating Q data, a log LUT for producing logarithmic values of the I data and the Q data received from the gain and offset adjustment unit and the Hilbert transform filter into a logI value and a logQ value respectively, a complex multiplexer for generating a corrected I value and a corrected Q value having their errors corrected out of the logI value and the logQ value received from the log LUT, a phase error detector for detecting phase errors from the corrected I value and the corrected Q value received from the complex multiplexer, and a loop filter for accumulating phase errors received from the phase error detector and applying the accumulated phase errors to the complex multiplexer. The phase error detector advantageously can reduce slice errors caused by phase noise coming from the local oscillator used in a tuner by correcting phase errors, and can be applicable not only to an HDTV but also a QAM for correcting phase errors in an 8 VSB system.
摘要翻译：用于通过减少来自本地振荡器的相位误差校正数据电平误差的HDTV接收系统的相位误差校正器包括用于调整输入I数据的增益和偏移的增益和偏移调整单元，用于执行的希尔伯特变换滤波器从用于产生Q数据的增益和偏移调整单元接收的I数据的希尔伯特变换滤波，用于产生从增益和偏移调整单元接收的I数据和Q数据的对数值的对数LUT和希尔伯特变换滤波器 logI值和logQ值，用于产生经校正的I值的复数多路复用器和具有从logI值校正的其误差和从log LUT接收的logQ值的校正Q值，用于检测相位误差的相位误差检测器从修正的I值和从复数复用器接收到的校正的Q值，以及用于累加从相位接收的相位误差的环路滤波器误差检测器并将累加的相位误差应用于复合多路复用器。相位误差检测器有利地可以通过校正相位误差来减少来自调谐器中使用的本地振荡器的相位噪声引起的切片误差，并且不仅可以应用于HDTV，而且可以应用于用于校正8 VSB系统中的相位误差的QAM。

4. 发明授权

US5446738A ATM multiplexing system 失效
标题翻译： ATM复用系统
公开(公告)号：US5446738A
公开(公告)日：1995-08-29
申请号：US173181
申请日：1993-12-28
申请人： Kyeong S. Kim , Hyup J. Kim , Mun K. Choi
发明人： Kyeong S. Kim , Hyup J. Kim , Mun K. Choi
IPC分类号： H04J3/00 , H04J3/24 , H04L12/00 , H04N7/24 , H04N7/58 , H04Q3/00 , H04Q11/04
CPC分类号： H04J3/247 , H04N21/23655 , H04N21/64307 , H04Q11/0478 , H04L2012/5651 , H04L2012/5672 , H04L2012/5679
摘要： An ATM multiplexing system comprising a plurality of ATM cell input circuits, each of which stores a cell stream incoming from a corresponding input stage and absorbs and removes instantaneous displacement of the incoming cells, a priority encoder for receiving simultaneously FIFO storage level information from the ATM cell input circuits and determining a priority for processing first an input stage with the largest number of stored cells, the FIFO storage level information including the number of the cells stored in the ATM cell input circuits, a link table processing circuit for receiving output headers from the priority encoder and input port numbers corresponding to the received headers and outputting changed headers corresponding to the received headers, an ATM cell output circuit for receiving the changed headers and link information from the link table processing circuit, determining a cell transmission order according to a service priority and performing a header assembling function for perfect cell production, a cell transmission controller for transmitting output headers from the ATM cell output circuit and the corresponding payloads and controlling the above-mentioned components, and a clock signal control circuit for generating a clock signal to control timing of the above-mentioned components.
摘要翻译：一种ATM多路复用系统，包括多个ATM信元输入电路，每个ATM信元输入电路存储从相应的输入级输入的信元流，并吸收并消除进入信元的瞬时位移;优先编码器，用于同时从ATM接收FIFO存储电平信息单元输入电路，并且确定首先处理具有最大数量的存储单元的输入级的优先级，所述FIFO存储级别信息包括存储在ATM单元输入电路中的单元的数量，链接表处理电路，用于从对应于接收到的报头的优先编码器和输入端口号，并且输出与接收到的报头相对应的改变的报头; ATM信元输出电路，用于从链路表处理电路接收改变的报头和链路信息，根据服务优先，执行头组合用于完善小区生成的小区传输控制器，用于从ATM信元输出电路和相应的有效载荷发送输出报头并控制上述组件的小区传输控制器，以及用于产生时钟信号以控制上述组件的定时的时钟信号控制电路，提到的组件。

5. 发明授权

US5361099A NTSC/HDTV community receiving system 失效
标题翻译： NTSC / HDTV社区接收系统
公开(公告)号：US5361099A
公开(公告)日：1994-11-01
申请号：US133244
申请日：1993-10-08
申请人： Kyeong S. Kim
发明人： Kyeong S. Kim
IPC分类号： H04N5/44 , H04N5/46 , H04N9/64 , H04N9/78 , H04N11/14
CPC分类号： H04N7/0122 , H04N11/146 , H04N5/46 , H04N9/642 , H04N9/78
摘要： A NTSC/HDTV community receiving system having a microcomputer, HDTV and NTSC tuners and NTSC and HDTV intermediate frequency detectors. The system includes an A/D converter for converting HDTV and NTSC intermediate frequency signals into digital signals and a demodulator for demodulating a NTSC frame color signal into an original state and demodulating the resultant digital HDTV signal from the A/D converter into a base band level state. A first comb filter removes a NTSC interference signal from the demodulated HDTV signal and extracts a NTSC line color signal from the resultant digital NTSC signal from the A/D converter, and a second comb filter extracts a motion coefficient, the NTSC frame color signal and a NTSC frame luminance signal from the resultant digital NTSC signal from the A/D converter and the NTSC line color signal from the first cob filter. A decoder extracts original HDTV color and luminance signals from the HDTV signal from the first comb filter, and a scan rate transformer line and pixel-interpolates the resultant NTSCI and NTSCQ color signals from the demodulator and the NTSC frame luminance signal from the second comb filter to match a scan rate of the NTSC signal to that of the HDTV signal. A display state controller controls display states of the NTSC and HDTV signals.
摘要翻译：具有微型计算机，HDTV和NTSC调谐器以及NTSC和HDTV中频检测器的NTSC / HDTV社区接收系统。该系统包括用于将HDTV和NTSC中频信号转换为数字信号的A / D转换器和用于将NTSC帧彩色信号解调为原始状态的解调器，并将所得数字HDTV信号从A / D转换器解调为基带水平状态。第一梳状滤波器从解调的HDTV信号中去除NTSC干扰信号，并从A / D转换器得到的数字NTSC信号中提取NTSC线色彩信号，第二梳状滤波器提取运动系数，NTSC帧颜色信号和来自A / D转换器的所得数字NTSC信号的NTSC帧亮度信号和来自第一芯片滤波器的NTSC线颜色信号。解码器从来自第一梳状滤波器的HDTV信号和扫描速率变换器线提取原始的HDTV颜色和亮度信号，并对来自解调器的NTSC和NTSCQ色彩信号进行像素内插，并从第二梳状滤波器以将NTSC信号的扫描速率与HDTV信号的扫描速率相匹配。显示状态控制器控制NTSC和HDTV信号的显示状态。

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