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公开(公告)号：US4803567A
公开(公告)日：1989-02-07
申请号：US925377
申请日：1986-10-30
摘要： A video replay store for a multi-channel digital video tape recorder, comprises a respective channel store for each channel, each channel store comprising a plurality of field stores which are written in and read from cyclically, a respective field boundary detector for each channel, each field boundary detector supplying a first pulse in response to each field boundary where an odd field changes to an even field, and a second pulse in response to each field boundary where an even field changes to an odd field, in the off-tape data in the respective channel, and a replay store controller for supplying write requests and read requests in a predetermined sequence to all of the channel stores, the replay store controller stepping on to the next state in the predetermined sequence in response to each first first pulse following a second pulse and each first second pulse following a first pulse.
摘要翻译： 用于多声道数字录像机的视频重放存储器包括用于每个声道的相应通道存储器，每个通道存储器包括被循环写入和读取的多个场存储器，每个通道的相应场边界检测器， 每个场边界检测器响应于奇数场改变为偶数场的每个场边界提供第一脉冲，以及响应于偶数场改变为奇数场的每个场边界的第二脉冲，在离带数据中 在相应的通道中，以及重放存储控制器，用于以预定的顺序向所有的通道存储器提供写入请求和读取请求，响应于每个第一个第一个脉冲，重播存储控制器以预定的顺序进入下一个状态 第二脉冲和跟随第一脉冲的每个第一第二脉冲。
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公开(公告)号：US5027205A
公开(公告)日：1991-06-25
申请号：US512381
申请日：1990-04-20
CPC分类号： G06T7/202 , H04N7/0125 , H04N7/014 , G06T2207/10016
摘要： In, for example, a motion compensated video standards converter wherein blocks in a first field or frame of a video signal are each compared with a plurality of blocks in the following succeeding field or frame of the video signal for deriving motion vectors representing the motion of the content of respective blocks between the first field or frame and the following field or frame, and wherein a respective correlation surface is generated for blocks in the first field or frame, the correlation surface representing the difference between the content of the block in the first field or frame and the content of each block in the following field or frame with which it has been compared, the shape of that part of the correlation surface which represents differences less than a threshold level is determined, and the comparison is varied in dependence on the shape.
摘要翻译： 例如，在运动补偿视频标准转换器中，其中视频信号的第一场或帧中的块与视频信号的随后的后续场或帧中的多个块进行比较，用于导出表示运动的运动矢量 在第一场或帧之间的各个块与随后的场或帧之间的各个块的内容，并且其中为第一场或帧中的块生成相应的相关表面，相关表面表示第一场或帧中的块的内容之间的差异 字段或帧以及与已经被比较的后续字段或帧中的每个块的内容，确定表示小于阈值水平的差的相关表面的该部分的形状（21,28,33,37， 38），并且比较根据形状而变化。
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公开(公告)号：US5016101A
公开(公告)日：1991-05-14
申请号：US512279
申请日：1990-04-20
CPC分类号： H04N7/014 , H04N5/765 , H04N5/846 , H04N7/0112 , Y10S348/911
摘要： Apparatus for converting a video signal to a photographic film image comprises a television standards converter for deriving from an input video signal, which may be a high definition video signal, a motion compensated digital video signal corresponding to 24 progressive scan frames per second, a video signal recorder for recording the digital video signal, a digital-to-analog converter for converting the digital video signal after reproduction to an analog video signal corresponding to 24 progressive scan frames per second, and an electron beam recorder to which the analog video signal is applied to record the content of the analog video signal on photographic film.
摘要翻译： 用于将视频信号转换为摄影胶片图像的设备包括电视标准转换器，用于从可以是高清晰度视频信号的输入视频信号中获得对应于每秒24个逐行扫描帧的运动补偿数字视频信号，视频 用于记录数字视频信号的信号记录器，用于将再现后的数字视频信号转换成对应于每秒24个逐行扫描帧的模拟视频信号的数 - 模转换器，以及模拟视频信号为 应用于在摄影胶片上记录模拟视频信号的内容。
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公开(公告)号：US4864398A
公开(公告)日：1989-09-05
申请号：US200421
申请日：1988-05-31
IPC分类号： H04N11/00 , H04N7/01 , H04N7/26 , H04N7/32 , H04N7/36 , H04N7/46 , H04N9/877 , H04N9/896 , H04N11/20 , H04N11/24
CPC分类号： H04N7/014 , H04N19/186 , H04N19/51 , H04N19/523 , H04N19/527 , H04N19/533 , H04N19/577 , H04N9/877 , H04N9/896
摘要： A television standards converter comprises a motion analyzer for analyzing the motion between consecutive fields of an input television signal of one television standard and for deriving motion vectors in dependence on the motion, a filter for recursively filtering the motion vectors, and an interpolator for aligning the fields in dependence on the filtered motion vectors so as effectively to represent static pictures, and means to effect conversion using the static pictures to derive the required output television signal of a different television standard.
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公开(公告)号：US5025495A
公开(公告)日：1991-06-18
申请号：US512813
申请日：1990-04-20
申请人： Richard J. A. Avis
发明人： Richard J. A. Avis
CPC分类号： G06T7/202 , H04N7/0125 , H04N7/014 , G06T2207/10016
摘要： In, for example, a motion compensated video standards converter wherein blocks in a first field or frame of a video signal are each compared with a plurality of blocks in the following field or frame of the video signal for deriving motion vectors representing the motion of the content of respective blocks between the first field or frame and the following field or frame, and wherein a correlation surface is generated for each block in the first field or frame, the correlation surface representing the difference between the content of the first block in the first field or frame and the content of each block in the following field or frame with which it has been compared; it is determined whether the correlation surface contains a clear minimum value of the difference by determining whether the minimum difference represented by the correlation surface differs from the next smallest difference represented by the correlation surface by more than a predetermined amount.
摘要翻译： 例如，在运动补偿视频标准转换器（图1）中，其中视频信号的第一场或帧中的块各自与视频信号的后续字段或帧中的多个块进行比较，用于导出表示 在第一场或帧与下一场或帧之间的各个块的内容的运动，并且其中为第一场或帧中的每个块生成相关表面，相关表面表示第一场或帧的内容之间的差异 在第一个字段或帧中的块，以及与之进行比较的以下字段或帧中的每个块的内容; 通过确定（22,26,30,46）由相关表面表示的最小差异是否与由相关表面表示的下一个最小差别不同，确定相关表面是否包含差的清除最小值 预定量。
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公开(公告)号：US5021881A
公开(公告)日：1991-06-04
申请号：US512145
申请日：1990-04-20
CPC分类号： G06T7/202 , H04N7/0125 , H04N7/014 , G06T2207/10016
摘要： In, for example, a motion compensated video standards converter wherein blocks in a first field or frame of a video signal are each compared with a plurality of blocks in the following succeeding field or frame of the video signal for deriving motion vectors representing the motion of the contact of respective blocks between the first field or frame and the following field or frame, and wherein a correlation surface is generated for each block in the first field or frame, the correlation surface representing the difference between the content of the block in the first field or frame and the content of each block in the following field or frame with which it has been compared, the magnitudes of the differences represented by the correlation surface are weighted if a preliminary determination of the correlation surface fails to reveal a clear minimum difference.
摘要翻译： 例如，在运动补偿视频标准转换器（图1）中，其中视频信号的第一场或帧中的块各自与视频信号的随后的后续场或帧中的多个块进行比较，用于导出运动矢量 表示在第一场或帧与下一个场或帧之间的各个块的内容的运动，并且其中为第一场或帧中的每个块生成相关表面，相关表面代表第一场或帧的内容之间的差异 在第一场或帧中的块，以及与其进行比较的以下场或帧中的每个块的内容，如果对相关表面所表示的差的大小进行加权（21,22,23），如果初步确定 相关表面无法显示明确的最小差异。
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公开(公告)号：US5016102A
公开(公告)日：1991-05-14
申请号：US512262
申请日：1990-04-20
申请人： Richard J. A. Avis
发明人： Richard J. A. Avis
CPC分类号： G06T7/202 , H04N7/0112 , H04N7/0125 , H04N7/014 , G06T2207/10016
摘要： In, for example, a motion compensated video standards converter wherein blocks in a first field or frame of a video signal are each compared with a plurality of blocks in the following field or frame of the video signal for deriving motion vectors representing the motion of the content of respective blocks between the first field or frame and the following field or frame, and wherein a correlation surface is generated for each block in the first field or frame, the correlation surface representing the difference between the content of the block in the first field or frame and the content of each block in the following field or frame with which it has been compared; it is determined whether the correlation surface contains a clear minimum value of the difference by determining whether the differences represented by the correlation surface increase monotonically in a region of the correlation surface surrounding the minimum difference represented by the correlation surface.
摘要翻译： 例如，在运动补偿视频标准转换器中，其中视频信号的第一场或帧中的块都与视频信号的后续场或帧中的多个块进行比较，以得出表示运动的运动矢量 在第一场或帧与下一场或帧之间的各个块的内容，并且其中为第一场或帧中的每个块生成相关表面，相关表面表示第一场或帧中的块的内容之间的差异 或帧，以及与之进行比较的以下字段或框架中的每个块的内容; 通过确定由相关表面表示的差异是否在由相关表面所表示的最小差值围绕的相关表面的区域中单调增加，确定相关表面是否包含清晰的最小值。
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公开(公告)号：US4820992A
公开(公告)日：1989-04-11
申请号：US119392
申请日：1987-11-10
申请人： Richard J. A. Avis
发明人： Richard J. A. Avis
CPC分类号： G06F1/10
摘要： A clock signal multiplexer for combining a plurality n of input clock signals of the same frequency but differing phases into a single channel, by selectively passing one of the n input clock signals to an output of the multiplexer to the exclusion of the other n-1 input clock signals, includes n input circuits to each of which a respective one of the n input signals is supplied together with a respective clock enable signal, a logic circuit coupling the input circuits to a signal synchronizer, the logic circuit operating to enable said signal synchronizer in respect of the input clock signal corresponding to that one of the n clock enable signals which is in a select condition, and further operating on return of the one of said clock enable signals to a non-select condition and transition of another of the clock signals to the select condition to disable the signal synchronizer in respect of the previously selected input clock signal, and to enable the signal synchronizer in respect of the input clock signal corresponding to the other clock enable signal, a clock signal selector to which the input clock signals are supplied and to which the signal synchronizer is connected, the signal synchronizer enabling the clock signal selector to pass the enabled input clock signal to the output of the multiplexer via a clock regenerator.
摘要翻译： 一种时钟信号多路复用器，用于通过选择性地将n个输入时钟信号中的一个输入到多路复用器的输出以将另一个n-1排除在外，将相同频率但不同相位的多个n个输入时钟信号组合成单个通道 输入时钟信号，包括n个输入电路，每个输入电路将n个输入信号中的相应一个与相应的时钟使能信号一起提供，逻辑电路将输入电路耦合到信号同步器，逻辑电路工作以使能所述信号 对应于处于选择状态的n个时钟使能信号中的一个的输入时钟信号的同步器，并且还在所述时钟使能信号中的一个返回到非选择状态并且将另一个的另一个的转换 时钟信号到选择条件以禁用相对于先前选择的输入时钟信号的信号同步器，并且使信号同步器在o f对应于另一个时钟使能信号的输入时钟信号;时钟信号选择器，输入时钟信号被提供给时钟信号选择器，信号同步器被连接到该时钟信号选择器，信号同步器使时钟信号选择器能够将使能的输入时钟信号传递到 通过时钟再生器输出多路复用器。
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