Moving driving device of camera

Details Moving driving device of camera Moving driving device of camera

1988-03-17

1989-07-18

Perkey, W. B.

354213, G03B 100

Patent

active

048497797

ABSTRACT:
The motor drive device according to the present invention drives a motor until a hold signal disappears and the motor is braked when the holding signal disappears. After a predetermined period from the time when the holding signal disappears, it is detected whether or not a completion position signal representing that the load has reached the normal complete position is output. If the completion position signal is not output, the motor is started again. The load is driven until the load reaches the position where the completion position signal is output, and then the motor is braked. Thus the load can be stopped at the correct position. Also, with the motor drive device according to the present invention, the motor may be braked after the load is driven by a predetermined amount. After a predetermined period has passed therefrom, it is detected whether or not a signal representing that the load is normally driven is output, and if the signal is not ouput, the motor is started again. The load is driven until the signal is output and then the motor is braked. Thus, the load can be correctly driven.

REFERENCES:
patent: 3842587 (1974-10-01), Stauss et al.
patent: 4178087 (1979-12-01), Shenk et al.
patent: 4239354 (1980-12-01), Shenk
patent: 4247189 (1981-01-01), Date et al.
patent: 4286849 (1981-09-01), Uchidoi et al.
patent: 4302085 (1981-11-01), Kazami et al.
patent: 4304480 (1981-12-01), Fukahori et al.
patent: 4311378 (1982-01-01), Freeman et al
patent: 4390261 (1983-06-01), Yamamoto et al.
patent: 4431292 (1984-02-01), Takahashi
patent: 4440481 (1984-04-01), Hoda et al.
patent: 4474442 (1984-10-01), Shiozawa
patent: 4482227 (1984-11-01), Shiozawa et al.
patent: 4494842 (1985-01-01), Kimura et al.
patent: 4653886 (1987-03-01), Desormeaux
patent: 4662736 (1987-05-01), Taniguchi et al.
patent: 4679925 (1987-07-01), Kawamura et al.
patent: 4734732 (1988-03-01), Nishio et al.

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