发明授权
- 专利标题: Cine-video film transport apparatus
- 专利标题(中): 电影影片传送装置
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申请号: US730539申请日: 1991-07-16
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公开(公告)号: US5419506A公开(公告)日: 1995-05-30
- 发明人: Erhan H. Gunday , Michael Doliton , Paul Foung , John R. Lee , Brian Kolaci , Susumu Murakami , Erwin P. Ishmael
- 申请人: Erhan H. Gunday , Michael Doliton , Paul Foung , John R. Lee , Brian Kolaci , Susumu Murakami , Erwin P. Ishmael
- 申请人地址: NJ Park Ridge
- 专利权人: Sony Electronics, Inc.
- 当前专利权人: Sony Electronics, Inc.
- 当前专利权人地址: NJ Park Ridge
- 主分类号: G03B21/44
- IPC分类号: G03B21/44 ; G11B15/43 ; G11B23/04
摘要:
Film transport apparatus for a cine-video system in which video signals are produced from film that is driven between supply and take-up reels. The film, which may be wound in A or B configuration on each reel, is threaded automatically about a film drive mechanism which transports the film from the supply reel, through a film gate to the take-up reel. Tensioning apparatus imparts tension to the film at the entry and exit of the film gate which, during the threading operation, causes the respective reels to rotate before film actually is transported therebetween. The direction in which each reel rotates to unwind film therefrom when tension is imparted serves to identify whether the film is wound in A or B configuration. Advantageously, a programmable processor controls the film transport speed in response to a user-actuated knob; and this same processor serves to detect when the film approaches its end on the supply or take-up reel.
公开/授权文献
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