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1. 发明授权

US4329715A Apparatus for use in scanning a cinematograph film 失效
标题翻译：用于扫描电影胶片的装置
公开(公告)号：US4329715A
公开(公告)日：1982-05-11
申请号：US194319
申请日：1980-10-06
申请人： Stephen P. Attridge
发明人： Stephen P. Attridge
IPC分类号： H04N3/38 , H04N3/36
CPC分类号： H04N3/38
摘要： In a flying spot film scanner for scanning a cinematograph film frame by frame during continuous movement of the film and producing a television video signal, apparatus is provided which processes signals representative of the direction of film movement, rate of film movement, position of each film frame in a film gate, times for television fields to begin, and rate of vertical deflection in a raster suitable for scanning a stationary film frame, to produce a composite output signal suitable for effecting the vertical deflection and positioning of a raster intended to scan a frame of a film moving so as to give rise to such signals. The required processing is effected by using an up/down position counter in which the number represents the current position of a reference point in whichever film frame is entering a scanning region defined by the film gate, and a composite counter in which the counting is started at the beginning of each television field from the loading in of the current number in the position counter and is effected from this number by clock pulses, some of which are representative of the rate of vertical deflection in a raster suitable for scanning a stationary film frame, and others representative of the rate of movement of the film.
摘要翻译：在用于在胶片连续移动期间逐帧扫描电影胶卷并产生电视视频信号的飞点胶片扫描器中，提供了处理表现胶片移动方向，胶片移动速度，胶片移动速度，每片胶片位置的信号的装置在电影门中的帧，电视场开始的时间和适合于扫描静止胶片帧的光栅中的垂直偏转的速率，以产生适合于实现旨在扫描静止胶片帧的光栅的垂直偏转和定位的复合输出信号胶片的框架移动以产生这样的信号。所需的处理通过使用上/下位置计数器来实现，其中数字表示参考点的当前位置，无论哪个胶片帧进入由胶片门限定的扫描区域，以及组合计数器，其中开始计数在每个电视场的起始处，从位置计数器当前号码的加载开始，并且通过时钟脉冲从该数字中获得，其中一些表示适合于扫描静止胶片框架的光栅中的垂直偏转速率，以及其他代表电影运动速度的代表。

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