发明名称 |
Frame counting method and device in camera |
摘要 |
The time after film is rewound up to a first frame until a film cartridge holding the film is allowed to be taken out is divided with the time required for rewinding the film by the currently-exposed frames. A delayed frame number is displayed at the time which is delayed from a time when the actual frame corresponding to the delayed frame number has been rewound for a delay time which is found based upon a number of the currently-exposed frames. Thus, a time in which a displayed number "1" changes to such a mark as "E" can be decreased, thereby preventing the user from opening a film cartridge chamber before the film is completely rewound.
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申请公布号 |
US5933662(A) |
申请公布日期 |
1999.08.03 |
申请号 |
US19960746780 |
申请日期 |
1996.11.15 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
NISHITANI, YASUHIRO |
分类号 |
G03B17/36;G03B17/42;(IPC1-7):G03B1/66 |
主分类号 |
G03B17/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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