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1.发明授权Method of and device for estimating the extent of motion in a picture element of a television picture 失效用于估计电视图像的图像元素中的运动程度的方法和装置
公开(公告)号：US4924306A
公开(公告)日：1990-05-08
申请号：US313660
申请日：1989-02-21
CPC分类号： H04N5/145 , G06T7/20 , H04N19/503
摘要： A motion estimation for a picture element (pixel) (P1) of a television picture (TP) is performed at pixel level by comparison of the picture signal value of the present pixel (P1) with that of a corresponding pixel (P1) in a previous and/or subsequent television picture and with that of a plurality of surrounding pixels (P2', P3', P4', P5') in the present picture. Dependent on whether a threshold value is exceeded, it is decided whether there is no motion or whether there is motion. In the comparison with the surrounding pixels, an OR function is present for the detection "no motion". It is assumed that a first and a second comparison result "no motion" associated with the pixel-pixel comparison and with the pixel-group comparison are stored for pixels (P) of the television picture (TP). Subsequently, the first and second comparison results in a sub-region (MA1) associated with the present pixel (P1) with a matrix of pixels (P1 . . . P64) are processed in accordance with a relation in which the quotient of the number of pixels (P) in the subregion (MA1) signifying "no motion" and the total number of pixels (P1 . . . P64) in the sub-region (MA1) is larger than an associated first and second threshold number, respectively, which is a part of the total number. At this sub-region level a decision is made about the extent of motion at the present pixel (P1), dependent on the combinations of the first and second threshold numbers being exceeded or not exceeded.
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2.发明授权
公开(公告)号：US5043810A
公开(公告)日：1991-08-27
申请号：US288058
申请日：1988-12-20
CPC分类号： H04N7/12 , H04N19/587 , H04N7/0155 , H04N7/0157 , H04N7/122 , H04N7/24
摘要： A transmitting section of the system according to the invention has transmitting section signal paths for at least three classes of motion, each with a preprocessing circuit (143, 145 and 147) which are provided with means for individually sampling. These sampling means sample in accordance with separate sampling patterns so that each preprocessing circuit (143, 145 or 147) supplies a video signal which is suitable for a display with an optimum distribution of temporal and/or spatial resolution for the associated class of motion. Dependent on the class of motion determined, one of the preprocessing circuits (143, 145 or 147) is coupled to a channel (170). The video signal to be supplied to the channel (170) is therefore a video signal suitable for a display with an optimum distribution of temporal and/or spatial resolution for the given class of motion (FIG. 1A). A high-definition receiving section of the system according to the invention also has at least three receiving section signal paths comprising a postprocessing circuit (43, 45 and 47) which decodes a received video signl in accordance with a method associated with the relevant postprocessing circuit (43, 45 or 47). The correct postprocessing circuit (43, 45 or 47) is selected in accordance with the class of motion, so that in the receiving section of the system according to the invention a display with an increasing spatial resolution can be achieved in the case of a decreasing motion (FIG. 1B).
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3.发明授权Method of and arrangement for motion detection in an interlaced television picture obtained after film-to-television conversion 失效在电影到电视转换后获得的隔行电视图像中的运动检测方法和装置
公开(公告)号：US4933759A
公开(公告)日：1990-06-12
申请号：US344194
申请日：1989-04-27
CPC分类号： H04N7/0112 , G06T7/20 , H04N5/144
摘要： Motion detection is based on picture signal value comparisons between picture elements (P) in consecutive, interlaced television pictures (n-2, n-1), (n, n+1), (n+2, N+3), motion or no motion, respectively, being determined in dependence on the fact whether comparison results exceed or do not exceed a threshold value. Changes in picture information between movie pictures (MP1, MP2, MP3) can negatively influence the telecine television motion detection if they make use of a preceding and a subsequent television picture. To prevent this, an instantaneous picture element (P1) in a first field (n) of a television picture (n, n+1) is compared with a number (P4, P5, P6, P7) of surrounding picture elements in a second field (n+1) and an instantaneous picture element (P11) in the second field N+1) is compared with a number (P14, P15, P16, P17) of surrounding picture elements in the first field (n).
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公开(公告)号：US5027206A
公开(公告)日：1991-06-25
申请号：US406928
申请日：1989-09-13
CPC分类号： G06T7/20 , H04N11/006 , H04N5/144 , H04N7/0112 , H04N7/0155 , H04N9/11
摘要： Use is made of a digitally assisted DATV to effect a bandwidth reduction encoding and bandwidth reduction decoding, in addition to MAC-coding and MAC-decoding, of at least three picture signal channels (PC) each having a different picture signal refresh period equal to, for example, 80, 40 and 20 ms which are coupled via a time-division multiplex circuit (MUX). For with the diversity of picture signal sources, it was found that distinguishing during the picture signal processing between a film mode (SW1, T40) and a non-film mode (SW1, T20) results in a significantly improved high-definition picture resolution. This distinction is expressed at the DATV by one information bit (FM'). During the non-film mode (SW1, T20) three Y-liminance channels (PC11, PC13 and PC12) of 80, 40 and 20 ms and two U and V-chrominance channels (PC21 and PC22) of 80 and 20 ms are operative. During the film mode (SW11, T40) the Y-channels (PC11 and PC13) and the U and V-channels (PC21 and PC23) of 80 and 40 ms are only operative.
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公开(公告)号：US4625239A
公开(公告)日：1986-11-25
申请号：US675119
申请日：1984-11-27
CPC分类号： H04N5/93 , Y10S348/91
摘要： A picture flicker correction is desired with video disc players involving display of a stop-motion or still television picture and with television displays using field and line frequency doubling, in accordance with the so-called ABAB method. With a movement detector (51) movement or the absence of movement is detected. Two adding circuits (19, 22) are connected in parallel to delay devices (9, 9+12) having time delays substantially equal to a field period. By means of two switch-over devices (32, 37) switched by the movement detector (51), the delay devices (9, 9+12) or the adding circuits (19, 22) can be coupled with a switch-over device (45) which is switched once per field period. A further delay device (42) having a time delay substantially equal to a field period provides for information transfer during second field periods of frame periods comprising two field periods. In the absence of movement detection, the original information is transferred, and in the event of movement detection, the combined information is transferred.
摘要翻译： 根据所谓的ABAB方法，需要涉及显示停止运动或静止电视图像的视频盘播放器以及使用场和线倍频的电视显示器进行图像闪烁校正。 利用移动检测器（51）检测到移动或不存在移动。 两个加法电路（19,22）并联连接到具有基本上等于场周期的时间延迟的延迟器件（9,9 + 12）。 通过由移动检测器（51）切换的两个切换装置（32,37），延迟装置（9,9 + 12）或加法电路（19,22）可以与切换装置 （45），每场场切换一次。 具有基本上等于场周期的时间延迟的另外的延迟装置（42）提供了包括两个场周期的帧周期的第二场周期期间的信息传送。 在没有移动检测的情况下，原始信息被传送，并且在移动检测的情况下，组合的信息被传送。
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公开(公告)号：US5432557A
公开(公告)日：1995-07-11
申请号：US111679
申请日：1993-08-25
申请人： Theodora L. Hamann , Wilhelmus A. Van de Goor , Leendert T. Rosendaal , Franciscus W. P. Vreeswijk , Adrianus C. J. G. Van de Waterlaat , Johannes Y. Tichelaar , Teunis Poot
发明人： Theodora L. Hamann , Wilhelmus A. Van de Goor , Leendert T. Rosendaal , Franciscus W. P. Vreeswijk , Adrianus C. J. G. Van de Waterlaat , Johannes Y. Tichelaar , Teunis Poot
CPC分类号： H04N7/0122 , H04N5/142 , H04N7/007 , H04N5/21 , Y10S348/909
摘要： In a receiver for extended television signals in which a wide aspect ratio picture and at least one horizontal bar are jointly coded so as to form a standard aspect ratio picture, the at least one horizontal bar conveys vertical resolution enhancement information, and the extended television signal receiver includes an arrangement (107,111) for modifying the vertical resolution enhancement information to reduce an amount of distortions comprised therein, and an arrangement for combining the wide aspect ratio picture and the modified vertical resolution enhancement information to provide an enhanced wide aspect ratio picture.
摘要翻译： 在用于扩展电视信号的接收机中，其中宽纵横比图像和至少一个水平条被联合编码以形成标准宽高比图像，所述至少一个水平条传送垂直分辨率增强信息，并且扩展电视信号 接收机包括用于修改垂直分辨率增强信息以减少其中包含的失真量的装置（107,111），以及用于组合宽宽比图像和修改的垂直分辨率增强信息以提供增强的宽宽比图像的装置。
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公开(公告)号：US4704629A
公开(公告)日：1987-11-03
申请号：US849668
申请日：1986-04-09
CPC分类号： H04N13/0059 , H04N11/08 , H04N19/597 , H04N7/007 , H04N7/0806 , H04N13/0003 , H04N13/0048 , H04N13/0055 , H04N13/0239
摘要： Television transmission or data storage system with time-division multiplex encoding. At least two signal sources are coupled via an encoding circuit for time-division multiplex encoding to a transmission or storage channel to which a data receiver including a decoding circuit can be connected. The signal supplied comprises two or more sub-picture signals during the line periods and the signal-compression or expansion time ratios for the different sub-picture signals are different. The decoding circuit is suitable for consecutively supplying signals during a line period of the data receiver, which signals largely correspond to the different sub-picture signals.
摘要翻译： 电视传输或具有时分复用编码的数据存储系统。 至少两个信号源经由用于时分复用编码的编码电路耦合到可以连接包括解码电路的数据接收器的传输或存储信道。 提供的信号在行周期期间包括两个或更多个子图像信号，并且不同子图像信号的信号压缩或扩展时间比率不同。 解码电路适合在数据接收机的行周期期间连续地提供信号，这些信号在很大程度上对应于不同的子画面信号。
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公开(公告)号：US4603351A
公开(公告)日：1986-07-29
申请号：US771441
申请日：1985-08-30
CPC分类号： H04N7/0132
摘要： By providing, in a field-frequency doubling circuit comprising a converter circuit (3) of an A, A, B, B, type, an interpolation circuit (31) which combines, in an appropriate manner, the information of two subjacent lines of a first field of a picture of the television signal to be converted and a second field of a picture of the television signal to be converted, line flicker can be prevented from occurring without it being necessary to provide a movement detector and a change-over switch for an A, B, A, B-type conversion.
摘要翻译： 通过在包括A，A，B，B类型的转换器电路（3）的场频倍增电路中提供一种内插电路（31），其以适当的方式组合了两个相邻线 可以防止要转换的电视信号的图像的第一场和要转换的电视信号的图像的第二场，而不需要提供行闪烁，而不需要提供移动检测器和转换开关 用于A，B，A，B型转换。
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公开(公告)号：US4979036A
公开(公告)日：1990-12-18
申请号：US356037
申请日：1989-05-23
CPC分类号： H04N7/0112 , G06T7/20 , H04N5/144 , H04N7/0155
摘要： A television picture memory (MEM) containing digital picture signal values associated with picture elements (PIX) is coupled via a picture signal value comparison circuit (COM1) and an absolute value circuit (ABS1) to an adaptive threshold circuit (THR) for the picture signal differences. In order to obtain a motion detection with a directional sensitivity in the horizontal and vertical direction, the threshold circuit (THR) has an adaptive horizontal and vertical threshold value - adapting circuit (ADA) which produces the adaptive threshold values (HI and VI) via maximum value passing circuits (H MAX and V MAX) which are coupled to the memory (MEM) via an absolute value circuit (ABS2), a picture signal comparison circuit (COM2) and a signal combining circuit (AVE2), and by-passing it. The comparison circuit (COM2) is operative for the horizontal threshold value (HI) with picture elements in the line direction which are more or less adjacent to an instantaneous picture element and picture element values which are derived via the signal combining circuit (AVE2) from the picture elements of one of the more or less adjacent, superjacent or underlying lines belonging to the instantaneous, preceding or subsequent field period. The comparison circuit (COM2) is operative for the vertical threshold value (VI) with picture elements in the field direction that are more or less adjacent to the instantaneous picture element and picture element values which are derived via the combining circuit (AVE2) from the picture elements of one of the more of less adjacent, superjacent or underlying lines belonging to the instantaneous, preceding or subsequent field period.
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10.发明授权Method and apparatus for processing signals conveyed in sub-sampled form by way of a transmission channel or record carrier 失效用于通过传输信道或记录载体处理以子采样形式传送的信号的方法和装置
公开(公告)号：US4965667A
公开(公告)日：1990-10-23
申请号：US281294
申请日：1988-12-07
CPC分类号： H04N7/0155 , H04N7/0157 , H04N7/122 , H04N7/24
摘要： A receiver for a high definition television signal in which the signal prior to transmission is sub-sampled on a block-by-block basis according to the movement has an input (39) which receives the sub-sampled signal which is applied to a shuffler (40) which shuffles the pixels of blocks in a manner which is the inverse to that performed prior to transmission. The correctly positioned pixels are applied to means (43,44,45) for adaptive switched interpolation filtering capable of providing spatial frequency filter responses which approximate those at the transmitter, for sub-sampling blocks of the interpolated picture are sub-sampled but where pixels adjacent but outside a block are sub-sampled with the same structure as that of the block and for non-adaptive switched interpolation filtering for providing spatial frequency filter responses which substantially correspond to those at the transmitter. An output (46) provides the reproduced high definition television signal. A digitally assisted television signal at a further input 41 is used to control the inverse shuffling and the selection of filter responses.
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