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1.发明授权Symbol code generation processing from interframe DPCM of TDM'd spatial-frequency analyses of video signals 失效视频信号TDM'd空间频率分析的帧间DPCM的符号码生成处理
公开(公告)号：US4827336A
公开(公告)日：1989-05-02
申请号：US135184
申请日：1987-12-18
CPC分类号： H04N11/046 , H04N19/152 , H04N19/186 , H04N19/503 , H04N19/61 , H04N19/63 , H04N19/50
摘要： At a sending station in a digital television transmission system embodying the invention, time-division multiplexing either of the spatial-frequency analyses of the video signals from a television camera or of their interframe DPCM responses, both of which have uniform coding rates, is completed prior to symbol coding of interframe DPCM samples. This obviates the problems of time-division multiplexing symbol codes of variable length and of irregular coding rate. Time-division multiplexing is done so as to facilitate symbol coding protocols which include run-length encoding of DPCM samples. At a receiving station in the digital television transmission system time-division demultiplexing takes place after symbol decoding, being done on a per scan line basis.
摘要翻译： 在体现本发明的数字电视传输系统中的发送站，对来自电视摄像机的视频信号的空间频率分析或其帧间DPCM响应进行时分复用，均具有均匀的编码率 在帧间DPCM样本的符号编码之前。 这消除了可变长度和不规则编码率的时分复用符号码的问题。 进行时分复用，以便于包括DPCM样本的游程长度编码的符号编码协议。 在数字电视传输系统的接收站，在符号解码之后进行时分解复用，在每个扫描线的基础上进行。
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公开(公告)号：US4498100A
公开(公告)日：1985-02-05
申请号：US444724
申请日：1982-11-26
CPC分类号： H04N9/78
摘要： Frame-to-frame comb filter for separating chrominance and luminance components of composite video signals produce distortions around the periphery of reproduced moving images. The color distortions are corrected by selectively adding the combed luminance signal to the combed chrominance signal during periods of detected motion, and bandpass filtering the combined signal to pass only the chrominance spectrum.
摘要翻译： 用于分离复合视频信号的色度和亮度分量的帧对帧梳状滤波器在再现的运动图像的周围产生失真。 通过在检测到的运动期间选择性地将精梳亮度信号加到梳状色度信号来校正颜色失真，并对组合信号进行带通滤波以仅通过色度谱。
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公开(公告)号：US4888640A
公开(公告)日：1989-12-19
申请号：US194656
申请日：1988-05-16
CPC分类号： H04N19/90 , H04N19/107 , H04N19/152 , H04N19/61 , H04N19/50
摘要： In a DPCM video digital data communication system each scan line of a video frame is refreshed with PCM data over a refresh cycle comprising a plurality of frames. Refresh generators at the transmitter and at the receiver are synchronized with an initialization signal and then run asynchronously to select scan lines for refresh. The refresh generators each employ counters for counting a selected number M, which has no factors in common with the number of scan lines of a frame, to select scan lines for refresh which have respectively different spatial positions in adjacent frames to avoid generating visible refresh artifacts. The number of frames in a refresh cycle is adaptively changed to stabilize the fill of the transmitter rate buffer.
摘要翻译： 在DPCM视频数字数据通信系统中，通过包括多个帧的刷新周期用PCM数据刷新视频帧的每条扫描线。 发送器和接收器上的刷新发生器与初始化信号同步，然后异步运行，以选择扫描线进行刷新。 刷新发生器各自使用计数器来计数选定数量M，其没有与帧的扫描线数相同的因素来选择在相邻帧中分别具有不同空间位置的刷新扫描线以避免产生可见的刷新伪影 。 自适应地改变刷新周期中的帧数以稳定发送器速率缓冲器的填充。
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公开(公告)号：US4831439A
公开(公告)日：1989-05-16
申请号：US194671
申请日：1988-05-16
CPC分类号： H04N21/4302 , H04N19/50 , H04N19/61 , H04N19/90 , H04N21/242 , H04N21/44004 , H04N19/107
摘要： In a DPCM video digital data communication system, each scan line of a video frame is refreshed with PCM data over a refresh cycle comprising a plurality of frames. Refresh generators at the transmitter and at the receiver are synchronized with an initialization signal and with subsequent refresh cycle synchronizing signals. Also the scan lines and frames are synchronized with corresponding transmitted marker synchronizing signals. The refresh generators run asynchronously between marker synchronizing signals to select scan lines for refresh. The refresh generators each employ counters for counting a selected number M which is an integer having no factors in common with the number of scan lines of a frame to select scan lines for refresh which have different spatial positions in adjacent successive frames to avoid generating visible refresh artifacts.
摘要翻译： 在DPCM视频数字数据通信系统中，通过包括多个帧的刷新周期用PCM数据刷新视频帧的每条扫描线。 在发射机和接收机处的刷新发生器与初始化信号和随后的刷新周期同步信号同步。 扫描线和帧也与相应的传输的标记同步信号同步。 刷新生成器在标记同步信号之间异步运行，以选择要刷新的扫描线。 刷新发生器各自使用计数器来计数选定数量M，这是一个整数，其没有与帧的扫描线数相同的因素，以选择在相邻连续帧中具有不同空间位置的用于刷新的扫描线，以避免产生可见的刷新 文物。
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公开(公告)号：US4575749A
公开(公告)日：1986-03-11
申请号：US518087
申请日：1983-07-28
摘要： A transmitter applies luminance and chroma components of a color television signal to a transmission path, such as a VTR or satellite, in amplitude compressed form. To obtain optimum improvement in S/N ratio, different compression laws for the luminance and chroma components are used. The signals can also be time compressed and sent in TDM form.
摘要翻译： 发射机以幅度压缩形式将彩色电视信号的亮度和色度分量应用于诸如VTR或卫星的传输路径。 为了获得S / N比的最佳改善，使用亮度和色度分量的不同压缩规律。 这些信号也可以以TDM格式进行时间压缩和发送。
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公开(公告)号：US5287178A
公开(公告)日：1994-02-15
申请号：US909489
申请日：1992-07-06
IPC分类号： H04N5/92 , H04J3/00 , H04L12/56 , H04N7/54 , H04N7/56 , H04N7/60 , H04N7/62 , H04N19/00 , H04N19/89 , H04N21/236 , H04Q11/04 , H04N7/12 , H04N5/2 , H04N7/04
CPC分类号： H04N21/236 , H04N19/00 , H04N19/37 , H04N19/61 , H04N19/89 , H04Q11/0478 , H04L2012/5616 , H04L2012/5646 , H04N19/70
摘要： A video signal encoding system includes a signal processor for segmenting encoded video data into transport blocks having a header section and a packed data section. The system also includes reset control apparatus for releasing resets of system components, after a global system reset, in a prescribed non-simultaneous phased sequence to enable signal processing to commence in the prescribed sequence. The phased reset release sequence begins when valid data is sensed as transiting the data lines.
摘要翻译： 视频信号编码系统包括用于将经编码的视频数据分割成具有报头部分和打包数据部分的传输块的信号处理器。 该系统还包括复位控制装置，用于在全局系统复位之后以规定的非同时相位序列释放系统组件的复位，以使信号处理能够以规定的顺序开始。 当有效数据被感测为转移数据线时，相位复位释放序列开始。
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7.发明授权Data separation processing in a dual channel digital high definition television system 失效双通道数字高分辨率电视系统中的数据分离处理
公开(公告)号：US5231486A
公开(公告)日：1993-07-27
申请号：US918751
申请日：1992-07-27
IPC分类号： H04B1/66 , H04B14/04 , H04J3/16 , H04N7/015 , H04N7/60 , H04N11/04 , H04N19/00 , H04N21/236 , H04N21/434
CPC分类号： H04N21/434 , H04N11/044 , H04N19/37 , H04N21/236 , H04N19/13 , H04N19/60 , H04N19/91
摘要： A high definition video system processes a bitstream including high and low priority variable length coded Data words. The coded Data is separated into packed High Priority Data and packed Low Priority Data by means of respective data packing units. The coded Data is continuously applied to both packing units. High Priority and Low Priority Length words indicating the bit lengths of high priority and low priority components of the coded Data are applied to the high and low priority data packers, respectively. The Low Priority Length word is zeroed when High Priority Data is to be packed for transport via a first output path, and the High Priority Length word is zeroed when Low Priority Data is to be packed for transport via a second output path.
摘要翻译： 高清晰度视频系统处理包括高优先级和低优先级可变长度编码数据字的比特流。 编码数据通过相应的数据打包单位分为打包的高优先级数据和打包的低优先级数据。 编码数据连续应用于两个包装单元。 指示编码数据的高优先级和低优先级分量的比特长度的高优先级和低优先级长度字分别应用于高优先级和低优先级的数据包装器。 当高优先级数据要打包以通过第一输出路径传输时，低优先级长度字被置零，当低优先级数据被打包以通过第二输出路径进行传输时，高优先级长度字被置零。
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