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1. 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。

2. 发明授权

US5289277A High definition television signal format converter 失效
标题翻译：高分辨率电视信号格式转换器
公开(公告)号：US5289277A
公开(公告)日：1994-02-22
申请号：US972260
申请日：1992-11-05
申请人： David L. Blanchard , Raymond C. Hauge , Ronald B. Lee , Paul A. Snopko , Frank C. Templin , Jong G. Kim , Dong H. Lee , In S. Lee , Moon K. Lee
发明人： David L. Blanchard , Raymond C. Hauge , Ronald B. Lee , Paul A. Snopko , Frank C. Templin , Jong G. Kim , Dong H. Lee , In S. Lee , Moon K. Lee
IPC分类号： H04N5/926 , H04N5/93 , H04N7/56 , H04N19/89 , H04N5/92
CPC分类号： H04N19/89 , H04N5/9264 , H04N5/93 , H04N7/56 , H04N5/9261 , H04N5/9265
摘要： A high definition television transmitting system includes a source of high definition analog RGB video signals which are converted to corresponding digitally encoded signals and thereafter compressed by a video encoder to a six megahertz bandwidth. The compressed data is formatted by a transmitter and processed in accordance with a Reed-Solomon error control system for broadcast as an NTSC-type broadcast signal. A high definition television receiver includes a high definition signal receiver coupled to the transmitter by a transmission link. The receiver extracts the compressed video, audio and ancillary data signals and applies a Reed-Solomon error correction thereto. The compressed video data is reconstructed by a video decoder and processed for high definition display. A high definition digital video tape recorder is coupled to the transmitter by an interface and format converter facilitating both recording and playback functions of the digital video tape recorder while maintaining the Reed-Solomon error control. The format converter provides compatibility between the high definition transmitter and the digital video tape recorder.
摘要翻译：高分辨率电视发射系统包括高清晰度模拟RGB视频信号源，其被转换成相应的数字编码信号，然后被视频编码器压缩到6兆赫兹带宽。压缩数据由发射机格式化，并根据用作NTSC型广播信号广播的里德 - 所罗门误差控制系统进行处理。高分辨率电视接收机包括通过传输链路耦合到发射机的高分辨率信号接收机。接收机提取压缩视频，音频和辅助数据信号，并对其进行Reed-Solomon纠错。压缩视频数据由视频解码器重构并进行高清显示处理。高分辨率数字录像机通过接口和格式转换器耦合到发射机，便于数字录像机的记录和重放功能，同时保持Reed-Solomon错误控制。格式转换器提供高清晰度发射机和数字录像机之间的兼容性。

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