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    • 5. 发明授权
    • Method and apparatus for processing an input 60 field/second video
signal generated by 3232 pulldown to produce an output video signal
    • 用于处理由3232下拉生成的输入60场/第二视频信号以产生输出视频信号的方法和装置
    • US5446497A
    • 1995-08-29
    • US129360
    • 1993-09-30
    • Stephen M. KeatingJohn W. Richards
    • Stephen M. KeatingJohn W. Richards
    • H04N5/7826H04N5/91H04N7/01H04N9/79
    • H04N7/0112Y10S348/911
    • A method of processing an input 60 field/second video signal generated by 3232 pulldown to produce an output video signal, comprises producing from the input signal a series of progressive scan format frames, each frame corresponding to a respective one of the input fields, and comparing blocks of pixels in each progressive scan frame with blocks of pixels in the following frame to derive motion vectors representing the motion of the content of respective blocks between frames. The motion vectors are utilized to monitor the field sequence of the input signal, and fields or frames of the output video signal are produced using input fields or progressive scan frames selected in dependence upon the field sequence of the input signal, at least some of the output fields or frames being produced by motion compensated temporal interpolation utilizing the motion vectors.
    • 一种处理由3232下拉产生的输入60场/第二视频信号以产生输出视频信号的方法,包括从输入信号产生一系列逐行扫描格式帧,每个帧对应于相应的一个输入场,以及 将每个逐行扫描帧中的像素块与随后帧中的像素块进行比较,以导出表示帧之间相应块的内容的运动的运动矢量。 使用运动矢量来监视输入信号的场序列,并且使用根据输入信号的场序列选择的输入场或逐行扫描帧产生输出视频信号的场或帧,至少一些 通过使用运动矢量的运动补偿时间插值产生的输出场或帧。
    • 9. 发明授权
    • Video tape recorder speed control
    • 录像机速度控制
    • US5299073A
    • 1994-03-29
    • US751110
    • 1991-08-28
    • Martin R. DorricottJohn W. Richards
    • Martin R. DorricottJohn W. Richards
    • G11B15/18G11B15/467H04N5/765H04N5/7826H04N5/783H04N5/91H04N5/926H04N7/01H04N7/12G11B15/52H04N5/78
    • G11B15/467G11B15/1875H04N5/765H04N5/91H04N5/926H04N7/01H04N7/0112H04N7/122
    • Video tape recorder speed control apparatus for controlling a video tape recorder (1) to cause it to reproduce a recorded video signal at a predetermined speed, such as a fraction 1/n of the normal speed, the apparatus comprising the video tape recorder (1), first and second counters (25,26), the first and second counters (25, 26) being incremented by a signal locked in frequency to the field repetition frequency of the video signal at the normal playback speed thereof, the first counter (25) resetting periodically at intervals determined by the predetermined speed, the second counter (26) being reset with a signal locked in frequency to the field repetition frequency of the video signal being reproduced by the video tape recorder (1), a comparator (27) for periodically comparing the counts of the first and second counters (25, 26) thereby to derive a phase error signal, and a control signal generator (28, 29, 30) to derive in dependence on the phase error signal a signal to control the reproduction speed of the video tape recorder (1).
    • 一种用于控制磁带录像机(1)的磁带录像机速度控制装置,使其以预定速度(例如正常速度的分数1 / n)再现记录的视频信号,该装置包括录像机(1) ),第一和第二计数器(25,26),第一和第二计数器(25,26)以其正常重放速度的视频信号的场重复频率被频率锁定的信号增加,第一计数器 25)以由预定速度确定的间隔周期性地重置,第二计数器(26)用频率锁定的信号复位到由磁带录像机(1)再现的视频信号的场重复频率,比较器(27) ),用于周期性地比较第一和第二计数器(25,26)的计数,从而导出相位误差信号;以及控制信号发生器(28,29,30),以根据相位误差信号导出控制信号 th e录像机(1)的再现速度。
    • 10. 发明授权
    • Motion dependent video signal processing
    • 运动相关视频信号处理
    • US5027203A
    • 1991-06-25
    • US512263
    • 1990-04-20
    • Raphael SamadJohn W. RichardsClive H. Gillard
    • Raphael SamadJohn W. RichardsClive H. Gillard
    • G06T7/20H04N7/01
    • G06T7/202H04N7/0125H04N7/014G06T2207/10016
    • 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, further motion vectors are selected for assignment to those of the blocks for which less than a predetermined plurality of good motion vectors are derived as a result of the comparison, by ranking all the good, non-stationary motion vectors derived for the field or frame in order of frequency of occurrence, and selecting those motion vectors which occur most frequently, unless they fall within a predetermined window of pixel motion of a motion vector already selected.
    • 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 选择第一场或帧与下一场或帧之间的各个块的内容,选择另外的运动矢量(20,27,30),用于分配给小于预定多个良好运动矢量的块的那些 通过比较的结果,通过按照发生频率的顺序排列为场或帧导出的所有良好的非平稳运动矢量,以及选择出现频率最高的运动矢量,除非它们落在像素运动的预定窗口内 已经选择的运动矢量。