专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US3941978A Automatic film searching and retrieval system 失效
标题翻译：自动电影检索和检索系统
公开(公告)号：US3941978A
公开(公告)日：1976-03-02
申请号：US468109
申请日：1974-05-08
申请人： James E. Huston , Robert W. Murre
发明人： James E. Huston , Robert W. Murre
IPC分类号： G03B21/11 , G06K17/00 , G03B23/12 , G06G7/28 , G06K7/10
CPC分类号： G03B21/113 , G06K17/00
摘要： An automatic film retrieval system of the type which utilizes film having a plurality of frames, each frame including document images and an adjacent frame marker to facilitate sensing and counting of the frames has an improved film speed drive control circuit which causes the film to be driven at high speed when a desired film frame is greater than a fixed given number of frames away from the actual present frame and at low speed when the desired film frame is less than or equal to a fixed given number of frames away from the actual present frame. The system additionally has an automatic film drive direction control circuit and a stop-go and reset control circuit.
摘要翻译：一种使用具有多个帧的胶片的自动胶卷检索系统，每帧包括文件图像和相邻的帧标记以便于对帧的检测和计数，具有改进的胶片速度驱动控制电路，其使胶片被驱动当期望的胶片帧大于距离实际当前帧的固定给定数量的帧并且当所需胶片帧小于或等于远离实际当前帧的固定给定数量的帧时，以高速度。该系统还具有自动胶片驱动方向控制电路和停止和复位控制电路。

IPRDB

热门服务

关于我们

友情链接

联系方式