Motorized drive device for camera
US4697899A · kind A · utility
14Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1986 |
| Grant date | Oct 6, 1987 |
| Priority date | — |
| Expiry date | Sep 29, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/425
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A motorized drive device for a camera having a motor and a transmission system. The deceleration control of the motor is started when an object being driven arrives at a short distance from a prescribed stop position. The detection of a fall of the speed of the object to an abnormal low value is carried out during the deceleration control period and its preceding motor drive period by respective different processes from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.