Motor control device for use in a camera system

Details Motor control device for use in a camera system Motor control device for use in a camera system

1988-06-22

1989-08-08

Perkey, W. B.

G03B 100, G03B 310, G03B 700

Patent

active

048557781

ABSTRACT:
A control device for use in a camera for driving two electric motors has a simple circuit arrangement in which one of three serial circuits having series connected transistors is commonly used for selectively driving the two electric motors in turns. In addition, for driving electromagnets and motors, the control device includes a CPU for generating m bits control data and a decoder driver IC for decoding the n bits control data into a m bit signals which selectively drive the electromagnets and the motors, wherein n is smaller than m, so that the number of control signal lines needed for the transmission of the control data from the CPU to the decoder driver IC can be reduced.

REFERENCES:
patent: 4360255 (1982-11-01), Kawasaki
patent: 4372663 (1983-02-01), Oshima
patent: 4529288 (1985-07-01), Nakai et al.
patent: 4571046 (1986-02-01), Suzuki et al.
patent: 4670693 (1987-06-01), Kazami et al.
patent: 4671640 (1987-06-01), Akada et al.
patent: 4679925 (1987-07-01), Kawamura et al.
Mitsubishi M50745, "Single-Chip 8-Bit CMOS Microcomputer".
Toshiba Technical Bulletin, "IC For Electric Motor", Apr. 1985.

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