Preparatory winding type camera
US5337107A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1993 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Aug 11, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/425
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A preparatory winding type camera wherein one frame is rewound after the whole film in the patrone is previously wound up, and thereafter, the film is automatically rewound into a patrone frame after frame each time a shutter release is performed. During the winding of the film at the time of the preparatory winding processing, a central processing unit causes a liquid crystal display device (LCD) to display the number of film frames always smaller one frame than the normal display, and, when one frame is rewound after the whole film in the patrone is wound up, the number of film frames currently displayed on the LCD is maintained as it is. With this arrangement, the number of film frames displayed on the LCD can avoid the up-down fluctuations during the preparatory winding processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.