/ Apparatus for regulating the focus/zoom of camera according to digital control signal

摘要

PURPOSE: A device for controlling focus/magnification of a camera by a digital control signal is provided to apply a constant voltage and a non-constant voltage through one terminal by the digital control signal, and to control a focus driving motor and a magnification driving motor of the camera. CONSTITUTION: A focus control motor(18) is driven to bring a camera into focus. A magnification control motor(20) is driven to control magnification of the camera. A power supplier(10) supplies a determined voltage to drive the motors(18,20). A focus controlling motor driver(14) drives the focus control motor(18) by a voltage supplied from the power supplier(10) according to a determined control signal. A magnification controlling motor driver(16) drives the magnification control motor(20) by a voltage supplied from the power supplier(10) according to a determined control signal. A controller(12) supplies a digital control signal for controlling the focus controlling motor driver(14) and the magnification controlling motor driver(16).