Camera driving circuit

Details Camera driving circuit Camera driving circuit

1992-04-30

1994-03-22

Gray, David M.

3542891, G03B 700

Patent

active

052968898

ABSTRACT:
Between a central processing unit for sequence control of a camera and a plurality of controlled systems is connected an interface serving as a predriver, which is formed of a monolithic integrated circuit. The controlled systems are transistors forming bridge circuits of drivers for controlling motors acting as driving sources of the camera. Between the central processing unit and the interface is a serial communication line system which comprises at least one serial data line and at least one serial clock line. The interface includes a serial-to-parallel conversion circuit for converting serial data transmitted over the serial data communication line system to parallel data, a latch circuit for latching the parallel data output from the serial-to-parallel conversion circuit and an output buffer circuit responsive to output signals of the latch circuit for providing drive signals to the controlled systems.

REFERENCES:
patent: 4772908 (1988-09-01), Ishimura et al.
patent: 4841327 (1989-06-01), Yamamoto et al.
patent: 4845522 (1989-07-01), Kataoka
patent: 4970538 (1990-11-01), Ichikawa et al.

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