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2. 发明授权

US4987440A Method of and apparatus for positioning image areas of film 失效
标题翻译：胶片图像区域定位方法及装置
公开(公告)号：US4987440A
公开(公告)日：1991-01-22
申请号：US415066
申请日：1989-09-29
申请人： Gerhard Benker , Wilhelm Nitsch , Bernd Payrhammer , Volker Weinert , Helmut Treiber , Ulrich Kluter
发明人： Gerhard Benker , Wilhelm Nitsch , Bernd Payrhammer , Volker Weinert , Helmut Treiber , Ulrich Kluter
IPC分类号： G03B27/46 , G03B27/53 , G03B27/62 , G03D15/00
CPC分类号： G03B27/6285 , G03D15/003
摘要： An exposed and developed photographic filmstrip having a series of image areas is conveyed along a path and is photoelectrically scanned at a first location of the path to detect regions characterized by marked density jumps. A signal is generated in response to detection of each such characteristic region and a first distance measuring device disposed near the first location assigns a first distance reading to each characteristic region upon detection thereof. The first distance readings are representative of the positions of the characteristic regions longitudinally of the filmstrip. Each signal is stored together with the respective first distance reading. The stored signals and first distance readings are used to calculate the positions of the image areas longitudinally of the filmstrip, and the calculated positions are likewise stored. From the first location, the filmstrip travels to a second location of the path where a notch is punched in the filmstrip adjacent to each image area. Immediately upstream of the second location, the filmstrip is photoelectrically scanned for a second time to again detect the characteristic regions.
摘要翻译：具有一系列图像区域的曝光和显影的照相胶片沿路径传送，并且在路径的第一位置处被光电扫描以检测以标记的密度跳跃为特征的区域。响应于每个这样的特征区域的检测而产生信号，并且设置在第一位置附近的第一距离测量装置在检测到时向每个特征区域分配第一距离读数。第一距离读数代表胶片纵向的特征区域的位置。每个信号与相应的第一距离读数一起存储。存储的信号和第一距离读数用于计算胶片纵向的图像区域的位置，同时存储计算的位置。从第一位置开始，胶片行进到与每个图像区域相邻的胶片中冲孔的路径的第二位置。在第二位置的上游，胶片被光电扫描第二次以再次检测特征区域。

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