Apparatus for controlling a motor in a camera
US4818921A · kind A · utility
4Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Aug 28, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/425
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus for controlling a motor in a camera including, a motor drive unit for driving the motor in a prescribed sequence, a braking device for applying the brakes on the motor in accordance with the prescribed sequence, and a speed detecting unit for monitoring the speed of the motor and permitting initiation of the next action only after the speed of the motor, in consequence of application of the brakes by the braking device, is brought to a level incapable of obstructing the next action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.